JP6543307B2 - Elevator system - Google Patents

Description

  The present invention relates to an elevator system for transmitting data of various signals related to the operation of the elevator.

  In order to prevent an increase in the number of wires between control devices constituting the elevator system, a method of transmitting various signals related to the operation of the elevator in data format between the elevator control device and the control devices on the car side and the landing side is disclosed. It is considered.

  However, when various signals are transmitted between the control devices, transmission errors may occur due to the influence of noise or the like. In such a case, since normal signals can not be exchanged between the control devices, unnecessary confinement and pause may occur.

Patent No. 5523443 gazette

  There is a method of transmitting the same signal multiple times in order to ensure the reliability of the signal by data transmission. However, if the same signal is transmitted multiple times, the amount of data to be transmitted will increase and the responsiveness will deteriorate. On the other hand, if the number of transmissions is reduced to reduce the amount of data, the reliability of the signal is reduced and unnecessary confinement and pause occur.

  The problem to be solved by the present invention is that, in a configuration in which various signals are transmitted between control devices, signal reliability can be ensured while suppressing an increase in the amount of data to be transmitted and a decrease in responsiveness. The purpose is to provide an elevator system.

An elevator system according to one embodiment transmits data of various signals involved in elevator operation between at least two or more control devices. In the elevator system, when the control device on the master side of each control device transmits data of the various signals to the control device on the slave side, the control device on the slave side receives the various signals. And transmission control means for performing an acknowledgment response to confirm that.
The transmission control means classifies the various signals according to the importance, sets the presence or absence of the acknowledgment according to the classified importance , and among the various signals, relates to the signals related to the operation control of the car. Is an elevator system characterized by setting high importance .

FIG. 1 is a view showing the configuration of an elevator according to the first embodiment. FIG. 2 is a diagram showing a functional configuration of the elevator system in the same embodiment. FIG. 3 is a diagram showing the configuration of a transmission management table provided in the transmission control unit of the elevator control apparatus in the embodiment. FIG. 4 is a flowchart showing the processing operation at the time of data transmission by the elevator control device in the same embodiment. FIG. 5 is a flowchart (No. 1) showing a processing operation when a transmission abnormality occurs in the elevator control device in the embodiment. FIG. 6 is a flowchart (No. 2) showing the processing operation when a transmission abnormality occurs in the elevator control device in the embodiment. FIG. 7 is a flow chart showing the processing operation when a transmission abnormality occurs in the safety signal by the elevator control device in the embodiment. FIG. 8 is a diagram showing the configuration of a transmission management table provided in the transmission control unit of the elevator control device according to the second embodiment. FIG. 9 is a flowchart (No. 1) showing a processing operation when a transmission abnormality occurs in the elevator control device in the embodiment. FIG. 10 is a flowchart (No. 2) showing the processing operation when a transmission abnormality occurs in the elevator control device in the same embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

First Embodiment
FIG. 1 is a view showing the configuration of an elevator according to the first embodiment.

  An elevator hoisting machine 2 is installed in a machine room 1 a at the top of the building 1. A traction sheave 2a is attached to the rotation shaft of the hoisting machine 2, and a rope 3 is wound around the traction sheave 2a and the deflection sheave 2b. A car 20 is attached to one end of the rope 3 and a counterweight 4 is attached to the other end. The car 20 and the counterweight 4 are movably supported by guide rails (not shown) erected in the hoistway 1b. When the traction sheave 2a is rotated by the driving of the hoisting machine 2, the car 20 and the counterweight 4 move up and down in a pick-up manner via the rope 3.

  Here, the elevator control device 10 is provided in the machine room 1 a, and the car control device 30 is provided in the upper part of the car 20. The elevator control device 10 is a main control device of the elevator system, and controls the entire elevator including the drive control of the hoisting machine 2 and the like. The car control device 30 performs open / close control of the car door 20a and registration control of a car call by pressing the destination floor button 23 (see FIG. 2) described later. The car control device 30 is connected to the elevator control device 10 via a transmission cable (tail cord) 5 and has a function of transmitting data of each signal concerning the car 20 with the elevator control device 10.

  On the other hand, landing control devices 40a, 40b, 40c,... Are provided at the landings 8a, 8b, 8c,. The landing control devices 40a, 40b, 40c... Perform registration control of the landing call by pressing the landing call buttons 41a, 41b, 41c. These landing control devices 40a, 40b, 40c,... Are connected to the elevator control device 10 via the transmission cable 6, and data transmission of each signal concerning the landings 8a, 8b, 8c,. Have a function to

  In the example of FIG. 1, the elevator control device 10 and the hoisting machine 2 are installed in the machine room 1a of the building 1, but in the machine room less type elevator, the elevator control device 10 and the hoisting machine 2 move up and down. It is provided in the passage 1b.

  The elevator control unit 10 and the car control unit 30, and the elevator control unit 10 and the landing control units 40a, 40b, 40c... Are connected by wired transmission cables 5 and 6, but may be connected wirelessly. In this case, wireless devices (not shown) are installed in each of the elevator control device 10, the car control device 30, and the landing control devices 40a, 40b, 40c... And various signals are transmitted by wireless communication through these wireless devices.

  FIG. 2 is a diagram showing a functional configuration of the elevator system in the first embodiment. In the following, the landings 8a, 8b, 8c,... Of the respective floors will be described as the landings 8. Similarly, the landing control devices 40a, 40b, 40c... Will be described as the landing control device 40, and the landing call buttons 41a, 41b, 41c.

  The elevator system in the present embodiment includes an elevator control device 10, a car control device 30, and a landing control device 40, and transmits data of various signals related to the operation of the elevator among these control devices.

  The “various signals related to the operation of the elevator” include, for example, door control signals, load signals, car calls, hall calls, operation signals of various buttons, audio output signals, display output signals and the like. As described later, in the present embodiment, the presence or absence of an acknowledgment is set for these signals (see FIG. 3).

  The door control signal is a signal for controlling the opening and closing of the car door 20a. The load signal is a signal indicating the loading load of the car 20 detected by the load sensor 7. The car call is a signal registered by pressing the destination floor button 23 of each floor provided in the car 20. The hall call is a signal registered by pressing the hall call button 41 installed at the hall 8. The operation signals of the various buttons are signals indicating that the various buttons including the destination floor button 23 of each floor have been pressed. The voice output signal and the display output signal are notification signals for notifying a passenger in the car 20 of a certain message or the like by voice and display.

  Of these signals, the signals relating to the car 20 are transmitted between the car control device 30 and the elevator control device 10, and the signals relating to the landing 8 are data between the landing control device 40 and the elevator control device 10. It is transmitted. The term "data transmission" as used herein refers to wired or wireless communication with various signals in a predetermined data format.

  The elevator control device 10 includes an operation control unit 11 and a transmission control unit 12. The operation control unit 11 has a call registration table 11a for registering a hall call and a car call, and operates the car 20 based on the hall call and the car call registered in the call registration table 11a. The operation control unit 11 transmits data of various signals related to the operation of the car 20 to the car control unit 30 and the hall control unit 40 via the transmission control unit 12 and, at the time of transmission abnormality, the car 20 at the nearest floor. Perform operation control, such as stopping the motor.

  The transmission control unit 12 is a part that controls data transmission between control devices. The transmission control unit 12 includes a first I / F unit 13, a process processing unit 14, a second I / F unit 15, and a storage unit 16.

  The first I / F unit 13 is an interface for exchanging signals between the operation control unit 11 and the transmission control unit 12 in the elevator control device 10. The second I / F unit 15 is an interface for exchanging signals between the elevator control device 10, the car control device 30, and the landing control device 40.

  The process processing unit 14 controls data transmission between the operation control unit 11 in the elevator control device 10 and the car control device 30 and the landing control device 40 which are external control devices. The process processing unit 14 stores the data transmitted from the operation control unit 11 in the storage unit 16 via the first I / F unit 13, and then the car control device 30 via the second I / F unit 15. Or transmit to the landing control device 40. In addition, the process processing unit 14 stores the data received from the car control device 30 or the landing control device 40 in the storage unit 16 through the second I / F unit 15, and then the first I / F unit 13. It transmits to the operation control part 11 via.

  The storage unit 16 is provided with a transmission management table T1 (see FIG. 3) described later, and the process processing unit 14 performs data transmission control according to various signals with reference to the transmission management table T1.

  The process processing unit 14 includes a transmission abnormality detection unit 17 and a communication retry control unit 18. The transmission abnormality detection unit 17 detects an abnormality during data transmission. The "error during data transmission" is a state in which a signal can not be correctly sent to the other party due to the influence of noise or the like. The communication retry control unit 18 performs communication retry to retransmit the same signal when the transmission abnormality detection unit 17 detects a transmission abnormality. The communication retry control unit 18 includes a retry counter 18 a and a retry abnormality detection unit 18 b. The retry counter 18a counts the number of communication retries. The retry abnormality detection unit 18 b detects a transmission abnormality when the communication retry is performed.

  In the car 20, a speaker 21, a display 22, a destination floor button 23 corresponding to each floor, a door open button 24, a door close button 25 and the like are provided. The load sensor 7 detects the load of the car 20. A signal indicating the loading load detected by the load sensor 7 is transmitted to the operation control unit 11 of the elevator control device 10 via the car control device 30. The operation control unit 11 uses the signal of the load sensor 7 to estimate the number of passengers and the like.

  The speaker 21 voice-outputs a message and the like regarding the getting on and off operation output from the operation control unit 11. The display 22 displays, for example, a message regarding the getting on / off operation output from the operation control unit 11. When the destination floor is designated by pressing the destination floor button 23, the designated destination floor is sent to the operation control unit 11 of the elevator control device 10 as a car call. When receiving the car call, the operation control unit 11 turns on the LED lamp of the pressed destination floor button 23 and moves the car 20 to the floor corresponding to the destination floor button 23. The door opening button 24 is an operation button for a passenger to instruct the door opening. The door closing button 25 is an operation button for a passenger to instruct the door closing.

  In addition, a hall call button 41 is provided at the hall 8 of each floor. The hall call button 41 is a button for registering a hall call indicating a destination direction (upward / downward), and has an upward button and a downward button. In addition, only the downward direction button is installed on the uppermost floor and only the upward direction button is installed on the lowest floor as the hall call button 41.

  When a landing call is registered by pressing the landing call button 41, the landing call is sent to the operation control unit 11 of the elevator control device 10 via the landing control device 40. In the operation control unit 11, when the hall call is received, the LED lamp of the hall call button 41 pressed and operated is turned on, and the car 20 is moved by the hall call button 41 to the floor where the hall call is registered.

  FIG. 3 is a diagram showing the configuration of a transmission management table T1 provided in the transmission control unit 12 of the elevator control device 10. As shown in FIG.

  The data of the transmission management table T1 is arbitrarily set, for example, through a maintenance terminal (not shown) held by a maintenance worker. In the transmission management table T1, various signals relating to the operation of the elevator are classified according to the degree of importance, and the presence or absence of acknowledgment for each signal is set. The signal that interferes with the operation of the elevator is more important.

  In the example of FIG. 3, importance 3: door control signal, load signal, importance 2: car call, hall call, button operation signal, importance 1: audio output signal, display output signal (importance 3> important Degree 2> Importance 1). In addition, although various signals are classified by three importance levels here, it may be classified by two or more importance levels. The types of signals are not limited to those listed here, and if the signals are the target of data transmission, they are classified according to their importance and presence or absence of acknowledgment is set.

  As for “presence of acknowledgment”, when the transmission master (elevator controller 10) sent a signal to the transmission slave (car controller 30, hall controller 40), the transmission slave could correctly receive the signal. It is a setting item for checking whether it is not. Signals of high importance are set to acknowledge, and signals of low importance are not acknowledged. In the example of FIG. 3, each signal of importance 3 and each signal of importance 2 are set to acknowledge, and each signal of importance 1 is set to not acknowledge.

  If the signal to be transmitted is set to acknowledge, the communication retry is performed when a transmission abnormality of the signal is detected. In this case, the number of communication retries is limited by the degree of importance. That is, in the example of FIG. 3, the number of tries of each signal of importance 3 is limited to the upper limit value α (α is a natural number of 1 or more). The number of retries of each signal of importance level 2 is limited to the upper limit value β (β is a natural number of 1 or more, α ≧ β). Communication retry is not performed for each signal of importance level 1.

  In addition, with regard to each of the importance 3 and the importance 2 signals, even if the upper limit value of the number of retries is reached, when the transmission abnormality continues, the operation is switched to the operation operation corresponding to the abnormality.

  Next, the operation of this system will be described.

  In the following, each process when (a) data transmission, (b) transmission abnormality occurs, and (c) transmission abnormality occurs in the safety signal will be described with reference to the corresponding flowcharts.

(A) At the time of data transmission FIG. 4 is a flow chart showing the processing operation at the time of data transmission by the elevator control device 10.

  Here, it is assumed that the elevator control device 10 is a transmission master, and the car control device 30 and the landing control device 40 are transmission slaves, and data is transmitted from the transmission master to the transmission slave to transmit various signals related to elevator operation.

  First, during the operation of the elevator, data is transmitted from the transmission control unit 12 of the elevator control device 10 which is the transmission master to the car control device 30 or the landing control device 40 which is the transmission slave. ).

  At this time, the process processing unit 14 in the transmission control unit 12 refers to the transmission management table T1 shown in FIG. 3 (step A11), and determines whether the transmitted signal is set to be acknowledged. (Step A12).

  In the case of a signal set to no acknowledgment (No in step A12), the process processing unit 14 ends the processing here without doing anything after data transmission. For example, since the audio output signal of importance 1 and the display output signal shown in FIG. 3 are set without acknowledgment, nothing is particularly done after data transmission. This is because there is no major obstacle to the operation of the elevator even if the signal is not sent normally for some reason.

  On the other hand, in the case of a signal set to be acknowledged (Yes in step A12), the process processing unit 14 executes the following process.

  That is, when the confirmation response of the signal is returned from the car control device 30 or the landing control device 40 which is the transmission slave (Yes in step A13), the transmission abnormality detection unit 17 detects an abnormality in the process processing unit 14 Whether or not it is confirmed (step A14). If any abnormality is detected in the confirmation response (Yes in step A14), the process processing unit 14 processes it as a reception error (step A15).

  If no acknowledgment is returned from the car controller 30 or the hall controller 40 which is the transmission slave (No in step A13), the process processing unit 14 transmits the data of the signal and then transmits the data. It is determined whether the time ta has passed (step A16). If there is no acknowledgment even after the time ta has passed, the process processing unit 14 processes it as a time-out error (step A17).

(B) When a transmission abnormality occurs FIGS. 5 and 6 are flowcharts showing the processing operation when a transmission abnormality occurs by the elevator control device 10, including the above-mentioned reception error and time-out error. It shows the processing operation when a transmission error occurs.

  When a transmission abnormality is detected by the transmission abnormality detection unit 17 in the process processing unit 14 (Yes in step B10), the process processing unit 14 refers to the transmission management table T1 shown in FIG. The degree is confirmed (step B11).

  If it is a signal of importance 3 (Yes in step B12), the process processing unit 14 determines that the number of communication retries of the signal counted by the retry counter 18a of the transmission abnormality detection unit 17 reaches the upper limit value α. It is checked whether or not it is present (step B13). When the number of communication retries of the signal has reached the upper limit value α (Yes in step B13), the process processing unit 14 controls the retry error of the signal through the retry abnormality detection unit 18b of the communication retry control unit 18 as the operation control unit 11 , And registered in the storage unit 16 (step B18).

  If the number of communication retries of the signal is less than α (No in step B13), the process processing unit 14 performs communication retry of the signal through the communication retry control unit 18 and counts up the count value of the retry counter 18a. (Step B17).

  When no transmission abnormality is detected by the transmission abnormality detection unit 17, that is, when the signal can be normally transmitted by the first communication or communication retry (No in step B10), the process processing unit 14 The communication retry count of the signal counted by the retry counter 18a is cleared (step B14).

  On the other hand, if it is a signal of degree of importance 2 (Yes in step B15), the process processing unit 14 determines that the number of communication retries of the signal counted by the retry counter 18a of the transmission abnormality detection unit 17 is the upper limit value β. Is checked (step B13). In this case, α> β, and the signal of importance 2 is more strongly restricted in retry than the signal of importance 3. When the number of communication retries of the signal has reached the upper limit value β (Yes in step B13), the process processing unit 14 controls the retry error of the signal through the retry abnormality detection unit 18b of the communication retry control unit 18 as the operation control unit 11 , And registered in the storage unit 16 (step B18).

  If the number of communication retries of the signal is less than β (No in step B16), the process processing unit 14 performs communication retry of the signal through the communication retry control unit 18, and counts up the count value of the retry counter 18a. (Step B17). If the signal is an importance 1 signal (No in step B15), the process processing unit 14 terminates the process without taking any action even if there is a transmission abnormality.

  Here, when the operation control unit 11 provided in the elevator control device 10 confirms that the retry error has been notified from the retry abnormality detection unit 18 b (step B19), the operation control unit 11 responds to the importance of the signal that has become the retry error. The following operation control is performed.

  That is, when the signal which has become the retry error is the importance 3 (Yes in step B20), the operation control unit 11 confirms the presence or absence of the passenger in the car 20 (step B21). The presence or absence of a passenger can be confirmed from the loading load of the car 20 detected by the load sensor 7.

  As shown in the transmission management table T1 of FIG. 3, when the signal of importance 3 is a retry error and there are passengers in the car 20 at that time (Yes in step B21), the operation control unit 11 Stops the car 20 at the nearest floor and opens the door (step B22). When the operation control unit 11 confirms that the passenger has got off after the door is opened (Yes in step B23), the operation control unit 11 closes the car 20 and stops the operation of the elevator (step B24).

  If there is a passenger in the car 20 after the door is open (No in step B23), the operation control unit 11 waits until the passenger gets off. In addition, it can be judged from the fluctuation | variation of the loading load of the cage 20 whether the passenger got off. That is, if the load of the car 20 changes to the initial value (load value of zero passengers) after the car 20 is opened, it can be determined that all the passengers of the car 20 have got off. If there are no passengers in the car 20 at step B21, the operation control unit 11 immediately suspends the operation of the elevator (step B24).

  In addition, when the signal that becomes the retry error is the importance 2 (No in step B20), the operation control unit 11 determines that there is a passenger in the car 20 (Yes in step B25), the operation of the call registration table 11a. The registration status of the car call is confirmed (step B26). When the car call is registered (Yes in step B26), the operation control unit 11 operates the car 20 to the registration floor of the car call (the destination floor designated by the car call) (step B27). The operation control unit 11 continues the operation of the car 20 until it responds to all the car calls registered in the call registration table 11a.

  When the car call is not registered (No in step B26) and it is confirmed that the passenger in the car 20 has got off (Yes in step B23), the operation control unit 11 closes the car 20 and operates the elevator Pause (step B24). In addition, even if the signal of the importance 2 is transmission abnormality, there is no hindrance to the operation for the registered car call. If there are no passengers in the car 20 in step B25, the operation control unit 11 immediately suspends the operation of the elevator (step B24).

  After stopping operation of the elevator, the operation control unit 11 stands by until a predetermined time tb elapses (step B28). This is because there is a possibility that the communication may be recovered if the transmission is temporarily interrupted due to any cause and the communication is awaited for a while. In the case of wireless communication, in particular, data transmission may be unstable depending on the radio wave condition, so it is preferable to wait for a while. tb may be the same time as ta in step A18 or a different time.

  When the predetermined time tb has passed (Yes in step B28), the operation control unit 11 performs test transmission to confirm whether the operation of the elevator can be resumed (step B29). Specifically, the test control is requested from the operation control unit 11 to the transmission control unit 12, and test data is transmitted to the car control device 30 and the landing control device 40 which are transmission slaves.

  When no transmission abnormality is detected in the test transmission (Yes in step B30), the operation control unit 11 clears the count of the retry counter 18a in the process processing unit 14 via the first I / F unit 13. After clearing the retry error of the storage unit 16 (step B31), the operation of the elevator is resumed (step B32).

  On the other hand, when a transmission abnormality is detected in the test transmission (No in step B24), the operation control unit 11 stands by until the predetermined time tb passes again.

(C) When a Transmission Error Occurred in the Safety Signal FIG. 7 is a flowchart showing a processing operation when a transmission abnormality occurs in the safety signal by the elevator control device 10.

  The "safety signal" is a signal related to the safety of the elevator, and among sensor switches (not shown) installed at each location of the elevator such as the car 20 and the landing 8, a specific signal requiring emergency response at the time of abnormality It is a signal output from sensors and switches. When this particular sensor switch is activated, it is necessary to immediately stop the operation of the elevator to ensure the safety of the passenger and maintenance personnel. For this reason, the safety signal is handled separately from the various signals related to the operation of the elevator described above.

  When the transmission abnormality detection unit 17 in the process processing unit 14 detects the transmission abnormality of the safety signal (Yes in step C11), the transmission error notification of the safety signal is sent to the operation control unit 11 (step C12). Transmission error registration of the safety signal is performed (step C13).

  Here, when the operation control unit 11 provided in the elevator control device 10 confirms that the transmission error detection unit 17 or the like is notified of the transmission error of the safety signal (step C14), the operation of the elevator is immediately stopped (C14) Step C15).

  After stopping the elevator, the operation control unit 11 stands by until the predetermined time tc elapses (step C16). This is because there is a possibility that the communication may be recovered if the transmission is temporarily interrupted due to any cause and the communication is awaited for a while. In the case of wireless communication, in particular, data transmission may be unstable depending on the radio wave condition, so it is preferable to wait for a while. tc may be the same time as tb in step B28 or a different time.

  When the predetermined time tc has elapsed (Yes in step C16), the operation control unit 11 performs test transmission to confirm whether the operation of the elevator can be resumed (step C17). Specifically, the test control is requested from the operation control unit 11 to the transmission control unit 12, and test data is transmitted to the car control device 30 and the landing control device 40 which are transmission slaves.

  If no transmission abnormality is detected in the test transmission (Yes in step C18), the operation control unit 11 clears the transmission error of the safety signal of the storage unit 16 via the first I / F unit 13 (Step C19) The operation of the elevator is resumed (step C20).

  On the other hand, when a transmission abnormality is detected in the test transmission (No in step C18), the operation control unit 11 stands by until the predetermined time tc passes again.

  As described above, according to the first embodiment, the acknowledgment response is performed according to the importance of various signals, and the number of communication retries when a transmission abnormality occurs is limited according to the importance of the signal. As a result, it is possible to ensure the reliability of a signal of high importance while suppressing an increase in the amount of transmission data, and to prevent unnecessary confinement and pausing. In addition, passenger safety can be secured by switching the operation for dealing with abnormality when transmission abnormality continues.

  Furthermore, safety can be secured by handling the transmission error of the safety signal related to the safety of the elevator separately from the above-mentioned various signals and immediately stopping the operation of the elevator when one transmission failure occurs.

Second Embodiment
Next, a second embodiment will be described.

  In the second embodiment, the importance of various signals is switched according to the operation mode of the elevator.

  FIG. 8 is a diagram showing the configuration of a transmission management table T2 provided in the transmission control unit 12 of the elevator control device 10 according to the second embodiment.

  The data of the transmission management table T2 is arbitrarily set, for example, through a maintenance terminal device (not shown) held by a maintenance worker. The transmission management table T2 is provided in the storage unit 16 of the transmission control unit 12 shown in FIG. 2 similarly to the transmission management table T1.

  Here, in the second embodiment, the importance of various signals set in the transmission management table T2 is changed according to the operation mode. That is, the operation mode of the elevator includes a "normal operation mode" in which the elevator is operated at normal times, and a "control operation mode" in which the control operation of the elevator is performed at the time of earthquake or fire. The normal operation mode is the same as the transmission management table T1 shown in FIG. 3, and importance 3: door control signal, load signal, importance 2: car call, hall call, button operation signal, importance 1: voice Output signal, display output signal (importance 3> importance 2> importance 1). In the control operation mode, the importance of various signals are different, importance 2: door control signal, audio output signal, display output signal, button operation signal, importance 1: load signal, car call, landing call (important (important) Degree 2> Importance 1).

  That is, in the normal operation mode, the importance of the signal related to the operation control of the elevator is set high. On the other hand, in the control operation mode, the importance of the signal related to the rescue of the passenger is set high. In the example of FIG. 8, various signals are classified according to the degree of importance according to the two operation modes, but may be classified into more operation modes.

  Each signal of importance 2 is set to be acknowledged, and each signal of importance 1 is set to be non-acknowledged. If the confirmation response is set, communication retry is performed when a transmission abnormality of the signal is detected. In the example of FIG. 8, the upper limit value of the number of retries is set to γ (γ is a natural number of 1 or more, α ≧ β γ γ) for each signal of importance 2. Communication retry is not performed for each signal of importance level 1.

  Further, for each signal of importance level 2, when the transmission abnormality continues even if the number of retries reaches the upper limit value γ, the driving operation according to the control operation is continued. The operation according to the control operation is continued for each of the importance 1 signals without communication retry.

  In addition, although the importance at the time of control operation mode is classified into two here, what is necessary is just to be classified into two or more. The types of signals are not limited to those listed here, and if the signals are the target of data transmission, they are classified according to their importance and presence or absence of acknowledgment is set.

  FIG. 9 and FIG. 10 are flowcharts showing the processing operation of the elevator control apparatus 10 according to the second embodiment when a transmission abnormality occurs.

  In the normal operation mode (No in step D10), the transmission control unit 12 of the elevator control device 10 uses setting data in the normal operation mode of the transmission management table T2 shown in FIG. 8 according to the importance of various signals. The above process is executed (step D11). The process at this time is the same as that of the first embodiment (see FIGS. 5 and 6).

  Here, when the operation mode of the elevator is switched to the control operation mode due to the occurrence of an earthquake or a fire (Yes in step D11), the process processing unit 14 of the transmission control unit 12 changes the degree of importance of the signal (step D12) Execute the following processing.

  That is, when a transmission abnormality is detected by the transmission abnormality detection unit 17 in the process processing unit 14 (Yes in step D13), the process processing unit 14 refers to the transmission management table T2 illustrated in FIG. The importance of the signal at time is confirmed (step D14). As described above, in the transmission management table T2, the importance of various signals in the control operation mode is different from that in the normal operation mode.

  If it is a signal of degree of importance 2 (Yes in step D14), the process processing unit 14 determines that the number of communication retries of the signal counted by the retry counter 18a of the transmission abnormality detection unit 17 reaches the upper limit value γ. It is checked whether or not it is present (step D15). When the number of communication retries of the signal has reached the upper limit value γ (Yes in step D15), the process processing unit 14 controls the retry error of the signal through the retry abnormality detection unit 18b of the communication retry control unit 18 as the operation control unit 11 , And registered in the storage unit 16 (step D16).

  If the communication retry count of the signal is less than γ (No in step D15), the process processing unit 14 performs communication retry of the signal through the communication retry control unit 18, and counts up the count value of the retry counter 18a. (Step D17).

  When no transmission abnormality is detected by the transmission abnormality detection unit 17, that is, when the signal can be normally transmitted by the first communication or communication retry (No in step D13), the process processing unit 14 The communication retry count of the signal counted by the retry counter 18a is cleared (step D19).

  Here, when the operation control unit 11 provided in the elevator control device 10 confirms that the retry error is notified from the retry abnormality detection unit 18 b (step D20), the operation control unit 11 continues the operation according to the control operation (step D21). ).

  Further, when the transmission abnormality detection unit 17 detects a transmission abnormality (Yes in step D13), the operation control unit 11 continues the operation according to the controlled operation if it is not a signal of importance 2 (No in step D14). (Step D21).

  While the control operation is continued by the operation control unit 11 (No in step D22), the transmission abnormality detection unit 17 continues to detect the transmission abnormality (step D13). After completion of the control operation (Yes in Step D22), if a retry error is registered in the storage unit 16 (Yes in Step D23), transmission for confirming whether the operation of the elevator can be resumed is performed (Step D24). Specifically, the test control is requested from the operation control unit 11 to the transmission control unit 12, and test data is transmitted to the car control device 30 and the landing control device 40 which are transmission slaves.

  When no transmission abnormality is detected in the test transmission (Yes in step D25), the operation control unit 11 clears the count of the retry counter 18a in the process processing unit 14 via the first I / F unit 13. After the retry error of the storage unit 16 is cleared (step D26), the elevator returns to the normal operation (step D27).

  On the other hand, when a transmission abnormality is detected in the test transmission (No in step D25), the operation control unit 11 waits until a predetermined time td elapses after the test transmission (step D25). This is because there is a possibility that the communication may be recovered if the transmission is temporarily interrupted due to any cause and the communication is awaited for a while. In the case of wireless communication, in particular, data transmission may be unstable depending on the radio wave condition, so it is preferable to wait for a while. td may be the same time as tb in step B28 or a different time.

  When the predetermined time td has elapsed (Yes in step D28), the operation control unit 11 performs test transmission to the car control device 30 and the landing control device 40, which are transmission slaves (step D24).

  In addition, after the end of the control operation (Yes in step D22), if there is no retry error registration in the storage unit 16 (No in step D23), the normal operation returns as it is (step D27).

  As described above, according to the second embodiment, by changing the importance of the signal according to the operation mode, it is possible to raise the importance of the signal related to the rescue of the passenger in the control operation mode and respond. Safety can be ensured.

  In each of the above embodiments, the elevator control device 10 is described as a transmission master, and the car control device 30 and the landing control device 40 are described as transmission slaves. However, the car control device 30 or the landing control device 40 is transmitted. The same applies to data transmission as a master and elevator control device 10 as a transmission slave. In this case, the car control device 30 or the landing control device 40 has the same function as the transmission control unit 12 provided in the elevator control device 10.

  In each of the above embodiments, various signals related to elevator operation are classified according to the level of importance, and the presence or absence of acknowledgment is set. However, regardless of the level of importance, acknowledgments for all the various signals are acknowledged. It is good also as composition to carry out. In this case, the same effects as those of the above embodiments can be obtained by setting the number of times of communication retry when there is no acknowledgment and the operation of the elevator according to the degree of importance of the signal.

  According to at least one embodiment described above, in the configuration in which various signals are transmitted between control devices, signal reliability is secured while suppressing increase in the amount of data to be transmitted and decrease in responsiveness. Can provide an elevator system capable of

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

  DESCRIPTION OF SYMBOLS 1 ... building, 1a ... machine room, 1b ... hoistway, 2: winding machine, 2a ... traction sheave, 2b ... diverting sheave, 3 ... rope, 4 ... counter weight, 5, 6 ... transmission cable, 7 ... load sensor , 8 (8a, 8b, 8c): landing, 10: elevator controller, 11: operation control unit, 11a: call registration table, 12: transmission control unit, 13: first I / F unit, 14: process processing 5, 15: second I / F unit 16, 16: storage unit, 17: transmission abnormality detection unit, 18: communication retry control unit, 18a: retry counter, 18b: retry abnormality detection unit, 20: car, 20a ... Car door 21 speaker 22 indicator 23 destination floor button 24 door opening button 25 door closing button 30 car control device 40 (40a, 40b, 40c) landing control device 41 (41 , 41b, 41c) ... landing call button, T1, T2 ... transmission management table.

Claims (7)

In an elevator system for transmitting data of various signals related to the operation of an elevator between at least two or more control devices,
In order to confirm that the control device on the slave side received the various signals when the control device on the master side in each control device transmits data on the various signals to the control device on the slave side And transmission control means for making an acknowledgment of
The transmission control means
The above various signals are classified according to the importance, and the presence or absence of acknowledgment is set according to the classified importance, and among the various signals, the importance is set high for the signal related to the operation control of the car. An elevator system characterized by switching the degree of importance of the various signals according to the operation mode of the elevator.   The signal related to the operation control of the car includes at least a door control signal for controlling the opening and closing of the door of the car and a load signal indicating a load on the car. Elevator system. The transmission control means
Communication retry control means for performing communication retry when transmission abnormality occurs;
The above communication retry control means
The elevator system according to claim 1, wherein the number of communication retries is limited according to the degree of importance of the various signals.   4. The elevator system according to claim 3, further comprising operation control means for switching to an operation operation corresponding to an abnormality when the number of times of the communication retry exceeds the limit. The above operation control means
5. The elevator system according to claim 4, wherein the operation operation corresponding to the abnormality is classified into at least two and executed according to the degree of importance of the various signals. The operation mode of the elevator includes at least a normal operation mode and a control operation mode.
The transmission control means
In the normal operation mode, the importance of the signal related to the operation control of the car is set high among the various signals. In the control operation mode, the importance of the signal related to the rescue of the passenger is high among the various signals. The elevator system according to any one of claims 1 to 5, wherein the elevator system is set. The signal related to the operation control of the car includes at least a door control signal for controlling the opening and closing of the door of the car and a load signal indicating a load on the car;
As signals related to the rescue of the passenger, at least a door control signal for controlling the opening and closing of the door of the car, a notification signal for notifying by voice or display in the car, and buttons of the buttons in the car The elevator system according to claim 6, characterized in that it comprises an operating signal.

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