JP4501710B2 - Engine start control device for vehicle - Google Patents

Description

  The present invention relates to an engine start control device for a vehicle.

  In recent vehicles, particularly automobiles, for example, as shown in Patent Document 1, when an ID signal wirelessly transmitted from a portable device held by an occupant is matched (authenticated), the door is locked / unlocked. The so-called smart entry system (sometimes referred to as a smart key system) is often used. In this smart entry system, an in-vehicle transmitter that wirelessly transmits a request signal to the vehicle side and an in-vehicle receiver that receives an ID signal are mounted, and the request signal is received by a portable device held by an occupant. A receiver and a transmitter that wirelessly transmits an ID signal are mounted. For example, when a request switch provided on the door handle is operated, a request signal is transmitted from the in-vehicle transmitter, and the portable device that receives this request signal transmits the ID signal wirelessly and is received by the in-vehicle receiver. If the collation of the ID signals matches, the door is locked / unlocked.

  Using such an ID signal from the portable device, switching control of permission / prohibition of engine start and switching control of locking / unlocking of the steering wheel are also performed. When the engine start is controlled using the ID signal, a request signal is transmitted to the vehicle when the engine is started, and the received ID signal is verified based on the request signal transmitted to the vehicle. When matched, it is assumed that the portable device (the occupant holding the portable device) is in the vehicle, the engine is allowed to start, and the ID signal is received based on the request signal transmitted into the vehicle. If not, it is determined that the portable device, that is, the passenger is not present in the vehicle, and the engine start is prohibited.

  Also, in some vehicles, a back door (sometimes called a lift gate) that opens and closes a rear opening formed on the rear surface of the vehicle body and a trunk lid that opens and closes a trunk room are not provided with a separate locking mechanism. Only a latch mechanism may be provided. And as shown in patent document 2, there also exists what was set as the electromagnetic latch mechanism which latches and unlatches a door electromagnetically. In a door having an electromagnetic latch mechanism, it is not necessary to apply a large operating force to the door handle for unlatching, which is preferable in terms of convenience. Also, as shown in Patent Document 3, there is a trunk lid provided with a lock mechanism.

  When switching the door to locked / unlocked using a portable device, especially when locking from outside the vehicle, the condition is set that the portable device is outside the vehicle and does not exist in the vehicle to prevent the portable device from being locked inside the vehicle. Often. For this reason, when the request switch is operated from outside the vehicle, a request signal is transmitted to the inside of the vehicle and the outside of the vehicle to distinguish whether the request signal transmitted to the vehicle is received or the request signal transmitted to the outside of the vehicle is received. Thus, it is also performed to distinguish (detect) whether the portable device is outside the vehicle or inside the vehicle.

JP 2003-269019 A Japanese Patent Laid-Open No. 11-6341 JP 2002-220958 A

  By the way, in a vehicle having a predetermined door positioned behind the front seat, for example, a back door that opens and closes a rear opening opened on the rear surface of the vehicle body, it is considered to perform engine start control using an ID signal. It is done. In this case, there is no particular problem if the back door is closed, but when the back door is open, there is a high possibility that the request signal transmitted toward the inside of the vehicle will leak out through the rear opening. . Leakage of the request signal sent to the inside of the vehicle also occurs when the door is latched but not fully latched, and the door is not half-latched (so-called half-door state). there is a possibility.

  If the request signal transmitted toward the inside of the vehicle leaks out of the vehicle as described above, the possibility of vehicle theft increases. In detail, it is assumed that an occupant holding a portable device moves to the rear of the vehicle with the engine stopped and opens a back door to load and unload a load. At this time, if a thief who wants to steal the vehicle gets into the driver's seat and starts the engine, the occupant who is behind the vehicle body through the back door (rear opening) that the request signal sent to the inside of the vehicle opens. As a result, the ID signal is received and the collation is matched, and the engine is started. As soon as the engine is started, the thief leaves the occupant behind the vehicle body and drives the vehicle to escape.

  The present invention has been made in view of the above circumstances, and its purpose is to prevent theft of a vehicle when the engine is permitted to start using the ID signal collation match transmitted from the portable device. An object of the present invention is to provide an engine start control device for a vehicle that can be prevented.

In order to achieve the above object, the present invention provides the following as a first solution. That is, as described in claim 1 in the claims,
A vehicle-mounted transmitter for wirelessly transmitting a request signal to the outside of a vehicle near a predetermined door other than the front seat door;
A portable device that wirelessly transmits an ID signal when a request signal is received;
A receiver mounted on a vehicle for receiving an ID signal from the portable device;
Engine control means for controlling engine start;
An in-vehicle transmitter mounted on the vehicle for wirelessly transmitting a request signal into the passenger compartment;
With
The engine control means starts the engine when the ID signal received by the receiver is matched based on the request signal from the in-vehicle transmitter when the engine is started. When an engine start operation is performed when the predetermined door is not closed, a request signal is transmitted from the external transmitter, and the receiver receives the request signal from the external transmitter. It is set to prohibit starting the engine when the ID signal is received.
It is like that.

  According to the above solution, the engine is started when the ID signal received based on the request signal transmitted into the vehicle is collated, that is, when it is confirmed that the portable device is present in the vehicle. On the other hand, when an occupant (driver) holding a portable device moves away from the driver's seat and moves outside the vehicle, opens a predetermined door, and loads / unloads luggage, this is transmitted from the transmitter outside the vehicle. The ID signal is received based on the request signal, and the engine start is prohibited. In this way, when the occupant holding the portable device is away from the driver's seat, it is possible to prevent the engine from being inadvertently started and to prevent the vehicle from being stolen. It will be.

Preferred embodiments based on the above solution are as described in claims 2 to 5 in the claims. That is,
A door mechanism for unlatching or unlocking the predetermined door;
A request switch operated from outside the vehicle,
A door control that causes a request signal to be transmitted from the vehicle transmitter when the request switch is operated, and that the door mechanism is unlatched or unlocked when the ID signal received by the receiver is matched. Means,
Further equipped with,
(Claim 2). In this case, the predetermined door is automatically unlatched or unlocked using the portable device and the outside transmitter, and the operation until the predetermined door is opened is simplified, which is preferable for improving convenience. Further, the vehicle outside transmitter can be used for both engine start control and automatic unlocking or unlocking of a predetermined door.

The predetermined door is a back door for opening and closing a rear opening that is opened at the rear of the vehicle body;
The vehicle exterior transmitter is provided in a rear bumper and is set to wirelessly transmit a request signal to the vehicle exterior rear,
(Claim 3). In this case, it is preferable for preventing vehicle theft when the occupant is moving near the back door located far from the driver's seat. In addition, it is possible to reliably detect portable devices held by passengers in the vicinity of the back door using the vehicle transmitter, even when the back door is closed, as well as when the back door is open. .

  When the predetermined door is not closed, the transmission intensity of the request signal from the outside transmitter is weakened or the transmission direction of the request signal deviates from the direction toward the inside of the vehicle as compared to when the predetermined door is closed. It can be changed so that it becomes a direction (corresponding to claim 4). In this case, when the door is not closed, the portable device in the vehicle is present outside the vehicle while reliably detecting the portable device held by the occupant who has moved outside the vehicle to open the predetermined door in the closed state. Then, it will become preferable in preventing the situation which misidentifies.

  When the predetermined door is not closed, the transmission intensity of the request signal from the in-vehicle transmitter is weakened or the transmission direction of the request signal is directed to the predetermined door as compared to when the predetermined door is closed. The direction can be changed so as to be different from the direction (corresponding to claim 5). In this case, it is preferable to prevent a situation in which a portable device held by an occupant outside the vehicle is mistaken for being present in the vehicle.

In order to achieve the above object, the present invention provides the second solution as follows. That is, as described in claim 6 in the claims,
An in-vehicle transmitter mounted on the vehicle for wirelessly transmitting a request signal into the vehicle;
A portable device that wirelessly transmits an ID signal when a request signal is received;
A receiver mounted on a vehicle for receiving an ID signal from the portable device;
Engine control means for controlling engine start;
With
The engine control means starts the engine when an ID signal received by the receiver is matched based on a request signal from the in-vehicle transmitter, and a predetermined door other than the front seat door When not in the closed state, the transmission intensity of the request signal from the in-vehicle transmitter is weaker than in the closed state, or the transmission direction of the request signal is different from the direction toward the predetermined door. change,
It is like that. According to the above solution, the engine is started when the ID signal received based on the request signal transmitted into the vehicle is collated, that is, when it is confirmed that the portable device is present in the vehicle. On the other hand, when a predetermined door is not closed, a situation where a portable device held by an occupant outside the vehicle is misidentified as being present in the vehicle is prevented, that is, the engine is inadvertently started. This prevents the vehicle from being stolen.

In order to achieve the above object, the present invention provides the third solution as follows. That is, as described in claim 7 in the claims,
An in-vehicle transmitter mounted on a vehicle for wirelessly transmitting a request signal into the vehicle;
A portable device that wirelessly transmits an ID signal when a request signal is received;
A receiver mounted on a vehicle for receiving an ID signal from the portable device;
Engine control means for controlling engine start;
With
The engine control means starts the engine when an ID signal received by the receiver is collated and matched based on a request signal from the in-vehicle transmitter, and a predetermined door other than the front seat door is opened. When not in the closed state, the receiver sensitivity of the receiver is reduced compared to that in the closed state.
It is like that. According to the above solution, the engine is started when the ID signal received based on the request signal transmitted into the vehicle is matched, that is, when it is confirmed that the portable device exists in the vehicle. On the other hand, when a predetermined door is not closed, a situation where a portable device held by an occupant outside the vehicle is misidentified as being present in the vehicle is prevented, that is, the engine is inadvertently started. This prevents the vehicle from being stolen.

The present invention can further adopt the following preferred modes. That is,
Equipped with a vehicle-mounted transmitter for wirelessly transmitting a request signal to the outside of a vehicle near a predetermined door other than the front seat door,
The engine control means starts the engine when the receiver continuously receives an ID signal based on a request signal from the outside transmitter from when the predetermined door is closed to when it is not closed. Is set to prohibit,
(Claim 8). In this case, it can be reliably detected that the portable device is outside the vehicle.

  The predetermined door may be a back door for opening and closing a rear opening that is opened in the rear surface of the vehicle body (corresponding to claim 9). In this case, it is preferable to prevent vehicle theft when the occupant is moving near the back door located far from the driver's seat.

  According to the present invention, it is possible to prevent the vehicle from being stolen when performing engine start control using an ID signal transmitted from a portable device.

  In FIG. 1, a vehicle V has a driver's seat door 1, a passenger seat door 2, a pair of left and right rear seat doors 3 and 4 as side doors, and the doors 1 to 4 are each opened rearward. . The door handles of the doors 1 to 4 are denoted by reference numerals 1a to 4a. The door handles 1a and 2a are equipped with a request switch 1b or 2b (see FIGS. 6 and 7) that is turned on by, for example, a light pressing operation for locking and unlocking using an ID signal described later. ing.

  As shown in FIGS. 2 to 5, a rear opening 5 is formed on the rear surface of the vehicle V, and the rear opening 5 is opened and closed by a lift gate 6 as a back door. The lift gate 6 is opened downward in the embodiment, and the closed state is shown in FIG. 3, the open state is shown in FIG. 4, and the slightly opened state is shown in FIG. The door handle of the lift gate 6 is indicated by reference numeral 6a in FIG. 2. The lift gate 6 is large and heavy, but the door handle 6a is provided at the open end to open the lift gate 6 so as to lift upward. Is provided. The door handle 6a also functions as a request switch for requesting transmission of a request signal for unlatching using the ID signal from the portable device K. The door handle 6a is in a direction in which the lift gate 6 opens. The minute displacement of the door handle 6a is an operation for requesting a request signal. In FIG. 3 to FIG. 5, J is an occupant, and a portable device (described later) held (carried) held by the occupant J is indicated by a symbol K.

  Here, the half-latch state is a state in which the door is rattling, as is called a so-called half-door, although it is latched but not completely. Whether or not the lift gate 6 is a half-latch is, for example, between a closed detection switch that is turned on only in a closed state (fully closed state) and a state in which the lift gate 6 is slightly opened to fully opened. An open detection switch that is turned on in the state of (2) can be provided, and when both the close detection switch and the open detection switch are not on, it can be determined that the half latch state is established. In addition, it is possible to determine whether or not it is in a half-latch state by using a sensor or the like that continuously or variably detects the displacement position of a specific member that is mechanically displaced in conjunction with the latch. It is possible to determine whether or not the state is a half latch state by a technique.

  Each of the side doors 1 to 4 has a latch mechanism manually operated by a door handle, and a lock mechanism for locking and unlocking the latch mechanism. That is, in order to open the doors 1 to 4 in the closed state, the door handles 1a to 4a are operated and then unlatched after the door handles 1a to 4a are first unlocked. Further, when the doors 1 to 4 in the open state are closed, mechanical latching is performed. The doors 1 to 4 are locked and unlocked by manual operation using the mechanical key 28 (see FIG. 6) provided in the portable device K, and using an ID signal transmitted wirelessly from the portable device K. Done. When the request switches 1b and 2b provided on the door handles 1a and 2a for the front seat are operated to request transmission of the ID signal from the portable device K, the request signal is wirelessly transmitted. It should be noted that the rear seat doors 3 and 4 are not directly locked or unlocked, but are linked to, for example, the locking and unlocking of the driver seat door 1. A request switch can be provided for each door 1 to 4. The doors 1 to 4 can be simultaneously locked and unlocked by operating a central lock control switch 37 (see FIG. 6) provided in the vehicle.

  On the other hand, the lift gate 6 has only the electromagnetic latch mechanism 10 (see FIG. 2) and does not have the lock mechanism separately. The electromagnetic latch mechanism 10 can be unlatched by unlatching using an ID signal transmitted wirelessly from a portable device K, which will be described later, and automatic latching by closing the lift gate 6, or by operating an operation switch from within the vehicle. Further, latching and unlatching are possible by manual operation using the mechanical key 28 (see FIG. 6) provided in the portable device K. When the door handle 6a is slightly pulled in the opening direction to slightly displace it in order to request the transmission of the ID signal from the portable device K, this becomes a request operation for generating a request signal for the lift gate 6, and the request The signal is transmitted wirelessly. The door handle 6a is exclusively for generating a request signal, and is not unlatched even if it is pulled strongly (set to prevent the large mechanical displacement required for unlatching from being performed). ) The control for latching and unlatching the lift gate 6 will be described in detail later.

  A total of five in-vehicle transmitters (transmission antennas) 7 a to 7 e and one in-vehicle receiver (reception antenna) 8 are mounted on the vehicle V in association with the portable device K. Each of the in-vehicle transmitters 7a to 7e wirelessly transmits a request signal described later within a predetermined range. The transmission area of the in-vehicle transmitter 7a is selectively set to A1 or A2 by switching the transmission mode. The transmission area A1 is a transmission area to a room near the driver's seat, and the transmission area A2 is a transmission area on the outer side of the driver's seat door 1. The transmission area of the in-vehicle transmitter 7b is selectively set to B1 or B2 by switching the transmission mode. The transmission area B1 is a transmission area to the room near the passenger seat, and the transmission area B2 is a transmission area outside the passenger seat door 2 in the vehicle.

  The transmission area C of the in-vehicle transmitter 7c is a transmission area to the rear of the vehicle body, that is, an area of the rear part of the back door 6 in the closed state. Is provided. The transmission area D of the in-vehicle transmitter 7d is a transmission area to the rear of the driver seat and the passenger seat in the vehicle. The transmission area E of the in-vehicle transmitter 7e is a transmission area to the front part of the driver's seat and the passenger seat in the vehicle.

  The transmission area in which the transmission areas A1, B1, D, and E for use in the vehicle are overlapped covers all areas in the vehicle. Further, the in-vehicle receiver 8 can receive an ID signal wirelessly transmitted from the portable device K in a range corresponding to all the transmission areas A to E.

  Using the transmission area, the location of the portable device K can be detected. For example, among the four transmission areas A1, B1, D, and E in the vehicle, for example, A1, B1, D, and E are slightly shifted in order in order to transmit a request signal for each transmission area. There is an ID signal returned from the portable device K within a predetermined time from the request signal transmission for this one transmission area until the request signal transmission for the next (other) transmission area is performed. Or not. When the ID signal from the portable device K is received before the request signal is transmitted to the next transmission area, the portable device K exists in the transmission area where the request signal was transmitted immediately before. This is the same for the transmission area outside the vehicle, and it is possible to know in which area of all the transmission areas the portable device K exists.

  When the door is open, for example, when the lift gate 6 is open, there is a possibility of interference between the in-vehicle transmission area and the out-of-vehicle transmission area. That is, for example, when the lift gate 6 is open, there is a possibility that the transmission area D is expanded to the rear of the vehicle body, and conversely, there is a possibility that the transmission area C behind the vehicle body is expanded to the inside of the vehicle. It is done. Such interference between transmission areas may occur even when the lift gate 6 is in a half-latch state. In detecting the position where the portable device K is to be described later, interference in the transmission area between the rear position of the vehicle body and the interior of the vehicle is taken into consideration.

  As shown in FIG. 6, the vehicle V is equipped with a control unit UV configured using a microcomputer having a CPU or the like as control means. As is known, the portable device K wirelessly communicated with the control unit UV has a control unit UK having a CPU and the like and configured using a microcomputer, and can be stored in a breast pocket as a whole. It is formed in a large card shape. The portable device K includes a battery 21 as a power source, a buzzer 22 as an alarm device, a receiving antenna 23 for receiving a request signal, a transmitting antenna 24 for wirelessly transmitting an ID signal, and a door 1 manually operated by a passenger. Lock switch 25 and unlock switch 26 for .about.4, a lift gate switch 27 for requesting unlatching of the lift gate 6, and a mechanical key 28. The mechanical key 28 has a transponder built in its operation part, and verification (authentication) is performed on the vehicle side at the time of lock (latch), unlock (unlatch), engine start, etc. using the mechanical key 28. (The ID signal includes a verification encryption (password)).

  The following various devices are connected to the control unit UV mounted on the vehicle V. That is, 31 is a door key cylinder provided on the side doors 1 and 2 (for use of the mechanical key 28), 32 is provided on each side door 1 to 4 and electromagnetically locks and unlocks the door. It is an actuator for doing. 33 is a key cylinder of the lift gate 6 (when the mechanical key 28 is used). 34 and 35 are for an ignition switch IGS, which will be described later, 34 is an ignition knob that is manually operated, and 35 is a reader (reader) necessary for collating the transponder of the mechanical key 28. Reference numeral 36 denotes a control unit that controls the fuel injection amount and ignition timing of the engine. Reference numeral 37 is a manually operated centralized lock switch for simultaneously locking or unlocking all of the side doors 1 to 4. Reference numeral 38 denotes an engine speed sensor, 39 denotes a vehicle speed sensor, 40 denotes an open state detection switch provided individually for each of the side doors 1 to 4, 41 denotes a switch for detecting that the lift gate 6 is open, 42 Is a switch for detecting that the lift gate 6 is closed. 43 is a switch for lock detection provided individually for the side doors 1 to 4. 44 is a meter (for alarm by a lamp) provided on the instrument panel, a buzzer (simple alarm by sound), an audio guide (audio alarm including alarm contents), and a lamp outside the vehicle body (for example, a direction indicator lamp blinks) Or the like, or any combination thereof.

"
FIG. 8 shows the ignition switch portion together with the steering lock portion. In FIG. 8, the ignition knob 34 in the locked position is rotated clockwise while being pressed, so that the ACC position (accessory position where audio can be operated), IG position (engine position) Operation continuation possible position), IG starter position (position to start the engine by operating the starter motor). By pulling the ignition knob 34 forward and removing it, the mechanical key 28 can be used (the key insertion hole of the key cylinder is exposed). In the lock position, the electromagnetic steering lock mechanism STR is operated, and the steering handle 11 (see also FIG. 1) is locked.

  Next, details of various controls using the portable device K will be described with reference to the flowchart of FIG. In the following description, P and Q each indicate a step, where P indicates the control content of the control unit UV on the vehicle-mounted side, and Q indicates the control content of the control unit UK on the portable device K side.

  First, FIG. 9 is a main routine of the control unit UV on the vehicle-mounted side, and FIG. 10 is a main routine of the control unit UK on the portable device K side corresponding to FIG. That is, P1 corresponds to Q1, P2 corresponds to Q2, P3 corresponds to Q3, and P4 corresponds to Q4.

  Details of P1 in FIG. 9 (Q1 in FIG. 10) will be described with reference to FIGS. First, in P11 of FIG. 11, it is determined whether there is an engine speed. If YES in P11, it is determined in P12 whether or not the central lock switch 37 has been operated. If YES in the determination of P12, in P13, when the current state of the doors 1 to 4 is locked, the doors 1 to 4 are unlocked, and the current state of the doors 1 to 4 is unlocked. When the doors 1 to 4 are locked. After this P13 or when the determination at P12 is NO, it is determined at P14 whether or not the locking or unlocking operation by the mechanical key 28 has been performed. If YES in P14, the doors 1 to 4 are locked or unlocked according to the operation of the mechanical key 28 in P15. After P15, or when NO in P14, the process is terminated as it is.

  If the determination at P11 is NO, it is determined at P16 whether or not the request switch 1b or 2b provided on the door handle 1a or 2a of the front seat door 1 or 2 has been operated. If YES in P16, a request signal is transmitted to the inside and outside of the vehicle (transmission areas are A1, A2, B1, B2, D, E) in P17. Thereafter, in P18, it is determined whether or not the ID signal is received within a predetermined time from the request signal transmission. That is, when the portable device K is present in any of the transmission areas A1, A2, B1, B2, D, and E by the processing of P17, the portable device K receives the request signal and returns the ID signal as a reply. This is output (processing of Q11 and Q12 in FIG. 12).

  If the determination in P18 is YES, in P19, the received ID signal is checked against the vehicle-specific encryption (password) stored in advance. After P19, at P20, it is determined whether or not the matching matches. When the determination in P20 is YES, it is determined whether or not the portable device K exists outside the vehicle. The determination at P21 is, for example, when the outside area A2, B2 and the inside area A1, B1 are switched in a short time and the outside area A2, B2 is set as the transmission area in the process at P17. When the signal is received, the portable device K exists outside the vehicle, and when the ID signal is received when the vehicle interior areas A1 and B1 are used as the transmission areas, it can be determined that the portable device K exists in the vehicle. When YES is determined in P21, that is, when it is determined that the portable device K exists outside the vehicle, in P22, the doors 1 and 2 are locked or unlocked according to the current lock status. That is, if it is currently locked, it is switched to unlocked, and if it is currently unlocked, it is switched to locked.

  After P22, when the determination at P16 is NO, when the determination at P18 is NO, when the determination at P20 is NO, or when the determination at P21 is NO, the lock signal from the portable device K at P23, respectively. Alternatively, it is determined whether or not an unlock signal has been received. That is, when the unlock switch 26 of the portable device K is operated or when the lock switch 25 is operated, a signal corresponding to this operation is wirelessly transmitted from the portable device K (Q13 and Q14 in FIG. 10). Processing), it is determined whether or not the wireless signal has been received. If the determination of P23 is YES, the processes of P24 and P25 are performed (corresponding to the processes of P19 and P20). When it is determined in P25 that the collation coincides, in P26, the doors 1 and 2 are locked or unlocked according to the content of the wireless signal from the portable device K. After P26, if NO is determined in P23 or NO in P25, the process proceeds to P12 described above.

  Next, details of P2 in FIG. 9 (Q2 in FIG. 10) will be described with reference to FIGS. First, in P31 of FIG. 13 showing the control contents on the vehicle-mounted side, it is determined whether or not the lift gate handle 6a has been slightly displaced, that is, whether or not there is a request signal generation request for the lift gate 6. When the determination at P31 is NO, at P32, it is determined whether or not there is a radio signal for requesting unlatching of the lift gate 6 from the portable device K. That is, when the lift gate switch 27 of the portable device K is turned on, the portable device K wirelessly transmits an ID signal and a lift gate signal (processing of Q33 and Q34 in FIG. 14). Whether or not is received is determined. If the determination in P32 is NO, it is determined in P33 whether or not the switch 41 (FIG. 6) for requesting unlatching of the lift gate 6 provided in the room is turned on. If the determination in P33 is NO, it is determined in P34 whether or not the lift gate 6 is unlatched by the mechanical key 28 provided in the portable device K. If the determination in P34 is NO, it is determined in P35 whether or not the lift gate 6 is currently open. If the determination at P35 is NO, the process is terminated as it is.

  When the determination at P31 is YES, that is, when the lift gate handle 6a is slightly displaced, at P37, request signals are transmitted wirelessly inside and outside the vehicle (transmission areas are A1, B1, C, D, E ). Thereafter, in P38, it is determined whether or not the ID signal is received within a predetermined time from the request signal transmission. That is, when the portable device K exists in the transmission area, the portable device K returns an ID signal (processing of Q31 and Q31 in FIG. 14). Further, in P38, it is determined whether or not the received ID signal is transmitted from the portable device K only with respect to the request signal transmitted to the rear of the vehicle body (transmission area C). Become. If the determination in P38 is YES, that is, if it is determined that the portable device K exists only in the transmission area C, the processing of P39 and P40 is performed. If YES in P40, that is, if the received ID signal is matched, the lift gate 6 (the electromagnetic latch mechanism 10) is unlatched in P41. By the unlatching at P41, the occupant can open the lift gate 6 upward only by holding the lift gate handle 6a and lifting it upward, for example. If NO in the determination of P38 or NO in the determination of P40, the process proceeds to P32 without performing unlatching.

  When the determination at P32 is YES, that is, when the ID signal and the unlatch request signal are received as the lift gate switch 27 of the portable device K is turned on (corresponding to the processing of Q33 and Q34 in FIG. 14). ), P42 to P44. That is, when the ID signal is collated at P42 and the collation coincidence is confirmed at P43, the lift gate 6 is unlatched at P44. If NO in the determination of P43, that is, if the collation does not match, the process proceeds to P33 without unlatching.

  When the determination in P33 is YES, that is, when the switch for unlatching the lift gate 6 provided in the vehicle is turned on, in P45, the lift gate 6 is unlatched and then the process proceeds to P34. If YES in P34, that is, if there is an unlatching operation by the mechanical key 28, the lift gate 6 is unlatched in P46, and then the process proceeds to P35. In the case of unlatching using the mechanical key 28, unlatching may be performed directly by mechanical operation (displacement) of the mechanical key 28.

  When the determination in P35 is YES, that is, when the lift gate 6 is currently open, the process of P47, which will be described later, is performed to control the lift gate 6 to be closed (on the portable device K side). The corresponding process is Q35 in FIG.

  The details of P47 in FIG. 13 (Q35 in FIG. 14) will be described with reference to FIGS. Note that the corresponding processing on the portable device K side (processing of Q35 in FIG. 14) is transmission of an ID signal when a request signal is received, as shown in FIG. First, the process of setting the flag to 0 or 1 is performed by the processes of P51 to P60 in FIG. The flag is reset to 0 when the lift gate 6 changes from the closed state to the open state, and is detected when the portable device K exists only outside the vehicle, or exists outside and inside the vehicle. 0 is detected, and is set to 1 when it is detected that the portable device K exists only in the vehicle.

  On the premise of the above, first, in P51, the flag is reset to 0 as the lift gate 6 is opened. Thereafter, in P52, the transmission intensity for the transmission areas A1, B1, D, E to the inside of the vehicle and the transmission area C to the rear side outside the vehicle is adjusted so as to be weaker than the reference value. This prevents a situation in which the in-vehicle transmission area (especially the transmission area D) greatly expands to the rear outside the vehicle when the lift gate 6 is opened, and conversely the transmission area C to the rear outside the vehicle increases to the inside of the vehicle. This is a process for preventing the situation from spreading. Thereafter, in P53, a request signal is transmitted to each of the transmission areas (a single request signal may be transmitted, but it is preferable to transmit the request signal periodically both inside and outside the vehicle).

  After P53, at P54, it is determined whether or not the ID signal from the portable device K for the request signal transmitted into the vehicle is received within a predetermined time. If the determination at P54 is YES, it is determined at P55 whether or not the collation matches. When the determination at P55 is YES, at P56, the flag is set to 1 for the time being because the portable device K exists in the vehicle. Note that the processes on the portable device K side corresponding to P53 and P54 are Q51 and Q52 in FIG.

  After P56, if NO in the determination of P54 (when the portable device K is not detected in the vehicle) or NO in the determination of P55, the process proceeds to P57. In P57, it is determined whether or not the flag is 0. If the determination in P57 is NO, that is, if the portable device K is detected inside the vehicle, whether or not an ID signal from the portable device K for the request signal transmitted outside the vehicle is received within a predetermined time in P58. Is determined. When the determination at P59 is YES, it is determined at P59 whether the ID signals match, and when the determination at P58 is YES, the flag is reset to 0 at P60. Note that the time passes through P60 when it is detected that the portable device K exists inside and outside the vehicle.

  After P60, if YES is determined in P57, NO is determined in P58, and NO is determined in P59, the process proceeds to P61 in FIG. In P61, it is determined whether or not the lift gate 6 has changed to the closed state. If the determination at P61 is NO, the process ends as it is.

  If YES in P61, it is determined in P63 whether or not the flag is 0. When YES in P63, that is, when the portable device K is at least outside the vehicle, after the lift gate 6 is latched in P64, a notification that the latch is performed in P67 (for example, the operation of the buzzer) Or a lamp blinking on the rear direction indicator, etc.).

  When the determination at P63 is NO, that is, when the portable device K does not exist outside the vehicle but exists only in the vehicle, if the lift gate 6 is latched as it is, there is a possibility that the portable device K may be enclosed in the vehicle. It is. At this time, after giving an alarm in P66, after confirming that a predetermined time has elapsed from the execution of the alarm in P67, the process proceeds to P64 and latching is performed. The predetermined time in P66 is a time after the lift gate 6 is closed, and is set to a time required for taking out the portable device K in the vehicle (for example, about 10 to 15 seconds).

  FIG. 18 shows the details of the engine start control in P4 of FIG. 9, and the control content of Q4 of FIG. 10 corresponding to this is that an ID signal is transmitted when a request signal is received. First, in P121 of FIG. 18, it is determined whether or not an IG starter operation that requires engine start has been performed. If the determination at P121 is YES, at P122, the transponder is verified to correspond to the case where the IG starter is operated by the mechanical key 28, and then at P123, it is determined whether or not the verification is matched. If YES in P123, the IG starter is controlled in P124, thereby starting the engine.

  When the determination at P123 is NO, it is determined at P125 whether the lift gate 6 is in the open state or the half latch state. When the determination at P125 is NO, that is, when the lift gate 6 is closed (completely closed), at P127, the indoor transmission areas A1, B1, D, E and the transmission area C at the rear of the vehicle body Each request signal is transmitted. If the determination at P125 is YES, in P126, the indoor transmission area is limited to the transmission areas A1, B1, E of only the front part, and then the process proceeds to P127. The process of P126 is to prevent a situation in which the in-vehicle transmission area D expands outside the vehicle through the rear opening 5 and misidentifies the portable device K outside the vehicle as the portable device K inside the vehicle. .

  After P127, it is determined in P128 whether or not an ID signal has been received from the portable device K for the request signal transmitted into the vehicle within a predetermined time from the request signal transmission. If the determination at P128 is YES, it is determined at P129 whether the lift gate 6 is in the open state or the half latch state (same as the determination at P125). When the determination in P129 is NO, that is, when it is confirmed that the lift gate 6 is in the closed state, the ID signal from the portable device K in the vehicle is verified in P130, and then the verification is performed in P131. It is determined whether or not they match. If YES in P131, IG starter control is executed in P132, and the engine is started.

  If YES in P129, the lift gate 6 is not in the closed state. At this time, in P133, it is determined whether or not the ID signal from the portable device K for the request signal transmitted to the rear of the vehicle body is received within a predetermined time from the transmission of the request signal. If the determination in P133 is YES, the portable device K at the rear of the vehicle body is likely to be misidentified as the portable device K in the vehicle. The

  When the determination at P133 is NO, the ID signal information received in the vehicle in the previous time (for example, within 3 seconds before) in P134 is within a predetermined time (for example, within 10 seconds) from when the lift gate 6 is closed. ) Is the same as the ID signal information from the portable device K for the request signal transmitted to the rear of the vehicle body. If the determination in P134 is YES, it is determined that there is a high possibility that the portable device K at the rear of the vehicle body is misidentified as the portable device K in the vehicle, and the process is terminated without starting the engine. When the determination in P134 is NO, the lift gate 6 is not in the closed state, but the processing after P130 is performed in order to give priority to the IG starter operation (the engine is started if the matching matches). If NO in the determination of P128 or YES in the determination of P133, the process is terminated without starting the engine. In the engine start control described above, the engine start control is not performed except for the control for starting the engine in P124 and P132. In addition, after starting the engine from the engine stop state, the transmission area in the vehicle is not limited to the front position, and the state is restored to the state expanded to all the transmission areas A1, B1, D, and E in the vehicle. Can do.

  As a modification of FIG. 18, the following can also be performed. First, the process of P126 may be changed as follows. That is, the transmission intensity to the transmission area C behind the vehicle body is weakened and / or the transmission direction is changed downward (preventing the transmission area C behind the vehicle body from expanding to the inside of the vehicle), and the transmission areas A1, The transmission intensity to B1, D, E is weakened and / or the transmission direction is changed forward (preventing the transmission area in the vehicle from expanding rearward of the vehicle body).

  A request signal may be transmitted when any of the following conditions is satisfied, and P123 (P130) in FIG. 18 may be collated prior to other steps (the next step P124 or Execution of control to start the engine when the collation is matched in P130). That is, the first is when the ACC is turned on from the IG off state (when the devices permitted to operate when the IGACC is turned on are turned on). Second, when IGACC is turned on. Third, every 3 seconds when the ACC is on. Fourth, every time 60 seconds elapse with the IG turned on. Fifth, when any door is opened from a state in which all the doors 1 to 4 and 6 are closed. Sixth, when all the doors are closed from the state in which any door is open.

  FIG. 19 shows the details of the steering lock control in P3 of FIG. 9, and the control content of Q3 of FIG. 10 corresponding to this is that an ID signal is transmitted when a request signal is received. The steering lock control shown in FIG. 19 substantially corresponds to the engine start control of FIG. 18 and will be described only when it is different from the engine start. First, in P141 corresponding to P121 in FIG. 18, it is determined whether or not the ignition knob is operated instead of determining whether or not the IG starter is operated. Also, in P144 and P152 corresponding to P124 and P132 in FIG. 18, the steering is unlocked instead of the IG starter control.

  The steering lock control in FIG. 19 does not have steps corresponding to P129, P133, and P134 in FIG. 18, and the steering is locked unless the steering unlock control is executed in P144 or P152. State. In FIG. 19, the steps P145 and P146 may not be present. In this case, the request signal at P147 is transmitted only to the inside of the vehicle, and therefore the ID signal at P148 is also transmitted to the inside of the vehicle. From the portable device K for the signal. Unlocking the steering wheel is less likely to steal the vehicle than allowing the engine to start, so it is possible to set the steering unlock condition more loosely than the engine start permission condition. The conditions for locking can be set strictly just like the conditions for permitting engine start.

  A request signal may be transmitted when either of the following conditions is satisfied, and P143 or P151 in FIG. 19 may be collated prior to other steps (P144 or P152 as the next step). This is the execution of the control to unlock the steering wheel when the collation matches in step). That is, the first is when the engine is stopped and one of the doors is opened. Second, when the engine is stopped and all doors are closed. Third, it is when ACC is turned off and IG is turned off.

  Although the embodiment has been described above, the present invention is not limited to the embodiment, and can be appropriately changed within the scope described in the scope of claims, and includes the following cases, for example. . The operation of the request switch for requesting the unlatching of the lift gate 6 includes not only a slight displacement of the lift gate handle 6a but also touching the lift gate handle 6a (for example, use of a pressure sensor or a capacity sensor), other than the lift gate handle 6a. (E.g., near the lift gate handle 6a of the lift gate 6) such as pressing a switch, etc., and the operation is simple and with a sufficiently small external force compared to the case of unlatching only by a mechanical external force applied by the passenger. As long as it can be operated, an appropriate form can be adopted.

  The lift gate 6 may be laterally opened, and the predetermined door to which the present invention is applied is, for example, laterally opened or opened downward in addition to the lift gate (back door) that opens and closes the rear opening 5. It may be a rear side door (in particular, a side door that functions as a luggage compartment door exclusively in a vehicle in which the rear part in the vehicle is a luggage compartment). The present invention is particularly effective when the occupant is a door that is likely to become a blind spot from the vicinity of the driver's seat door and is relatively difficult to return to the driver's seat quickly. Or it is effective to apply with respect to the rear side door located in the left-right opposite side with respect to the driver's seat door among the rear side doors.

  An electromagnetic lock mechanism may be separately provided for the electromagnetic latch mechanism 10. In this case, it is sufficient to set so that the lock is automatically performed after the latch and automatically unlocked before the unlatch. The predetermined door may be of a type that does not perform unlatching or unlocking using an ID signal from the portable device. In this case, the vehicle-mounted transmitter is exclusively used for control for prohibiting engine start. Further, forcibly latching may be set in the half latch state.

  The transmission antenna 7c that forms the transmission area C toward the rear of the vehicle body can also be provided on a predetermined door itself such as a back door. However, it is provided on the vehicle body in the vicinity of the predetermined door in that the occupant outside the vehicle (the portable device held by the vehicle) near the opening of the vehicle body that is opened and closed by the predetermined door is reliably detected even when the predetermined door opens. In particular, it is preferable to provide a range where the inner surface of the predetermined door that is opened faces can be formed as a transmission area.

  In order to prevent interference between the outside transmission area and the inside transmission area when the predetermined door is not closed, the transmission intensity of the transmission antenna 7c is weakened or expanded toward the inside of the vehicle as compared with the closed state. The transmission direction may be changed to a direction deviating from the interior of the vehicle. Similarly, the request signal transmitted in the vehicle may be changed to a state in which it is difficult to receive, for example, the transmission area in the vehicle is limited to a narrow range excluding the vicinity of a predetermined door, the request signal to the vehicle Change the transmission direction of the door so that the vicinity of a predetermined door is excluded, reduce the transmission intensity of the request signal into the vehicle, and reduce the reception sensitivity of the ID signal based on the request signal transmitted into the vehicle (for example, The reception threshold value may be increased). Furthermore, even when the predetermined door is in the closed state, when the portable device outside the vehicle is continuously detected (when the ID signal based on the request signal transmitted outside the vehicle is continuously received) ) Can be set to prohibit starting the engine, assuming that there is a high possibility that the portable device is outside the vehicle. Of course, the objects of the present invention are not limited to those specified, but implicitly include providing what is substantially preferred or expressed as an advantage.

The top view which shows the vehicle with which this invention was applied with the transmission area of a request signal. The rear view of FIG. The rear side view of the vehicle when the lift gate is fully closed. The rear side view of the vehicle when the lift gate is fully opened. A side view of the rear of the vehicle with the lift gate slightly open, showing a state close to a half latch. The block diagram which shows each control system example by the vehicle-mounted side and the portable device side. The principal part perspective view which shows an example of the door handle for side doors with a request switch. The principal part simple perspective view which shows an IG switch with a steering lock mechanism. The flowchart which shows the control example of the control unit by the side of vehicle mounting. The flowchart which shows the example of control of the control unit by the side of a portable device. The flowchart which shows the detail of P1 of FIG. 11 is a flowchart showing details of Q1 in FIG. The flowchart which shows the detail of P2 of FIG. 11 is a flowchart showing details of Q2 in FIG. The flowchart which shows the detail of P47 of FIG. The flowchart which shows the detail of P47 of FIG. FIG. 14 is a flowchart showing details of Q35. The flowchart which shows the detail of P4 of FIG. The flowchart which shows the detail of P3 of FIG.

Explanation of symbols

1: Driver's seat door 1a: Door handle 1b: Request switch 2: Passenger seat door 2a: Door handle 2b: Request switch 3, 4: Rear seat door 5: Rear opening 6: Lift gate (back door)
6a: Lift gate handle (door handle)
7a, 7b: Transmitting antenna (used both as a vehicle transmitter and a vehicle transmitter)
7c: Transmitting antenna (outside car transmitter)
7d, 7e: Transmitting antenna (in-vehicle transmitter)
8: Receiving antenna (on-vehicle receiver)
9: Rear bumper 10: Electromagnetic latch mechanism 23: Receiving antenna (mobile device side)
24: Transmitting antenna (mobile device side)
25: Door lock switch (mobile device side)
26: Door unlock switch (portable device side)
27: Lift gate switch (portable machine side)
28: Mechanical key 34: Ignition knob 41: Lift gate open detection sensor 42: Lift gate close detection sensor 44: Alarm IGS: Ignition switch STR: Steering lock mechanism A1, A2, B1, B2, C, D, E: Transmission Area V: Vehicle K: Portable device UV: Control unit (on-vehicle side)
UK: Control unit (mobile device side)

Claims (9)

A vehicle-mounted transmitter for wirelessly transmitting a request signal to the outside of a vehicle near a predetermined door other than the front seat door;
A portable device that wirelessly transmits an ID signal when a request signal is received;
A receiver mounted on a vehicle for receiving an ID signal from the portable device;
Engine control means for controlling engine start;
An in-vehicle transmitter mounted on the vehicle for wirelessly transmitting a request signal into the passenger compartment;
With
The engine control means starts the engine when the ID signal received by the receiver is matched based on the request signal from the in-vehicle transmitter when the engine is started. When an engine start operation is performed when the predetermined door is not closed, a request signal is transmitted from the external transmitter, and the receiver receives the request signal from the external transmitter. It is set to prohibit starting the engine when the ID signal is received.
An engine start control device for a vehicle. In claim 1,
A door mechanism for unlatching or unlocking the predetermined door;
A request switch operated from outside the vehicle,
When the request switch is operated, a request signal is transmitted from the vehicle-mounted transmitter, and the door mechanism is unlatched or unlocked when the ID signal received by the receiver is matched. Means,
Further equipped with,
An engine start control device for a vehicle. In claim 1 or claim 2,
The predetermined door is a back door for opening and closing a rear opening that is opened at the rear of the vehicle body;
The vehicle exterior transmitter is provided in a rear bumper and is set to wirelessly transmit a request signal to the vehicle exterior rear,
An engine start control device for a vehicle. In claim 2,
When the predetermined door is not closed, the transmission intensity of the request signal from the outside transmitter is weakened or the transmission direction of the request signal deviates from the direction toward the inside of the vehicle as compared to when the predetermined door is closed. A start control device for an engine in a vehicle, wherein the start control device is changed so as to be in a direction. In claim 2,
When the predetermined door is not closed, the transmission intensity of the request signal from the in-vehicle transmitter is weakened or the transmission direction of the request signal is directed to the predetermined door as compared to when the predetermined door is closed. Changed to be out of direction,
An engine start control device for a vehicle. An in-vehicle transmitter mounted on the vehicle for wirelessly transmitting a request signal into the vehicle;
A portable device that wirelessly transmits an ID signal when a request signal is received;
A receiver mounted on a vehicle for receiving an ID signal from the portable device;
Engine control means for controlling engine start;
With
The engine control means starts the engine when an ID signal received by the receiver is matched based on a request signal from the in-vehicle transmitter, and a predetermined door other than the front seat door When not in the closed state, the transmission intensity of the request signal from the in-vehicle transmitter is weaker than in the closed state, or the transmission direction of the request signal is different from the direction toward the predetermined door. change,
An engine start control device for a vehicle. An in-vehicle transmitter mounted on the vehicle for wirelessly transmitting a request signal into the vehicle;
A portable device that wirelessly transmits an ID signal when a request signal is received;
A receiver mounted on a vehicle for receiving an ID signal from the portable device;
Engine control means for controlling engine start;
With
The engine control means starts the engine when an ID signal received by the receiver is matched based on a request signal from the in-vehicle transmitter, and a predetermined door other than the front seat door When not in the closed state, the receiver sensitivity of the receiver is reduced compared to that in the closed state.
An engine start control device for a vehicle. In claim 1, claim 6 or claim 7,
Equipped with a vehicle-mounted transmitter for wirelessly transmitting a request signal to the outside of a vehicle near a predetermined door other than the front seat door,
The engine control means starts the engine when the receiver continuously receives an ID signal based on a request signal from the outside transmitter from when the predetermined door is closed to when it is not closed. Is set to prohibit,
An engine start control device for a vehicle. In any one of Claims 1 thru | or 8,
The engine start control device for a vehicle according to claim 1, wherein the predetermined door is a back door for opening and closing a rear surface opening portion opened in the rear surface of the vehicle body.

Images