GB2111204A - Driver guidance system for motor vehicle - Google Patents

Driver guidance system for motor vehicle Download PDF

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Publication number
GB2111204A
GB2111204A GB08228551A GB8228551A GB2111204A GB 2111204 A GB2111204 A GB 2111204A GB 08228551 A GB08228551 A GB 08228551A GB 8228551 A GB8228551 A GB 8228551A GB 2111204 A GB2111204 A GB 2111204A
Authority
GB
United Kingdom
Prior art keywords
motor vehicle
target point
travel
guide system
drive guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08228551A
Other versions
GB2111204B (en
Inventor
Masakazu Moriyama
Takao Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of GB2111204A publication Critical patent/GB2111204A/en
Application granted granted Critical
Publication of GB2111204B publication Critical patent/GB2111204B/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3626—Details of the output of route guidance instructions
    • G01C21/3655—Timing of guidance instructions

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Navigation (AREA)
  • Processing Or Creating Images (AREA)
  • Digital Computer Display Output (AREA)
  • Traffic Control Systems (AREA)

Abstract

The position of a vehicle is determined by dead-reckoning and is displayed as shown on a cathode ray tube. As the vehicle approaches a predetermined position such as V1; V2; V3 the guide system produces a make- turn instruction, the direction of which may be either predetermined or determined from the bearing of the next predetermined point or destination D. The indication may be supplemented by e.g. a buzzer. <IMAGE>

Description

SPECIFICATION Drive guide system for motor vehicle The present invention relates to a drive guide system for a motor vehicle, and more particularly to a drive guide system for a motor vehicle suitable for guiding the drive of the motor vehicle by displaying a drive route map to a destination point of the motor vehicle and a drive locus.
The drive guide system has a display such as a CRT on which the drive route map to the destination point of the motor vehicle, the drive locus of the motor vehicle and the destination point to guide the motor vehicle to the destination point are displayed.
A prior art drive guide system can display the drive route map to the destination point of the motor vehicle and the drive locus but cannot display a direction of travel of the motor vehicle to be taken at a target point (e.g. a cross-point) on the drive route to the destination. Accordingly, a driver must determine the direction of travel of the motor vehicle at the target point by referring a map.
It is an object of the present invention to provide a drive guide system for a motor vehicle which can inform to a driver of a direction of travel of the motor vehicle to be taken near a target point on a drive route of the motor vehicle.
In accordance with the present invention, there is provided a drive guide system for a motor vehicle comprising: (A) A travel distance sensor for sensing a travel distance of said motor vehicle; (B) an azimuth sensor for sensing a direction of travel of said motor vehicle; (C) a display controlled by display control means for displaying a road map, a start point, a destination point, a target point therebetween, and a current position of said motor vehicle derived from a distance signal from said travel distance sensor and an azimuth signal from said azimuth sensor; (D) input means for inputting information on said road map, said start point, said destination point and said target point to said display control means; and (E) alarm means for outputting a direction of travel to be taken by said motor vehicle when said motor vehicle approaches to said target point.
According to the present invention, the direction of travel of the motor vehicle to be taken can be informed to the driver in advance to a predetermiend target point between a start point and a destination point of the motor vehicle, so that the driver drives the motor vehicle to the destination point without drive route map.
In the drawings:- Fig. 1 shows a configuration of one embodiment of the present invention, Fig. 2 illustrates setting of position information of a target point of the motor vehicle, Fig. 3 iHustrates sectioning of quadrants to a direction of travel of the motor vehilcle, Fig. 4 shows a flow chart for determining the direction of travel of the motor vehicle, Fig. 5 shows a flow chart for a right turn routine, and Fig. 6 shows an example of right turn display.
Fig. 1 shows one embodiment of the present invention which uses a CRT 10 as a display for displaying a drive locus of a motor vehicle. A display screen on the CRT 10 has a resolution power of 256 dots in horizontal line by 192 dots in vertical line and information including the drive locus and a target point is displayed by selected dots on the coordinates. Numeral 12 denotes a display control unit for controlling the CRT 10 which comrises a microcomputer 14 for carrying out various arithmetic and logic operations, a RAM 16, a ROM 18, an interface 20 between the microcomputer 14 and the RAM 16 and the ROM 1 8 and a CRT controller 32 which is controlled by the microcomputer 14.An azimuth sensor 22 for sensing an azimith of travel of the motor vehicle, a vehicle speed sensor 24 as a travel distance sensor for sensing a travel distance of the motor vehicle and a keyboard 26 for entering various instruction data including the azimuth data and the distance data to the microcomputer 14 are provided. An azimuth signal 100 from the azimuth sensor 22 is supplied to the microcomputer 14 through the interface 28, a distance signal 102 from the vehicle speed sensor 24 is directly supplied to the microcomputer 14, and instruction data 104 from the keyboard 26 are supplied to the microcomputer 14 through an encoder 30.
A casette deck 34 is provided to present map information of a drive route map to the destination point of the motor vehicle. When a casette tape is loaded to the cassette deck 34, a video signal 106 is supplied from the cassette deck 34 to the microcomputer 14 through a cassette interface 36. A speaker 40 is connected to the cassette interface 36 through an audio amplifier 38 to produce a sound signal such as a guidance for the map or an alarm.
In the present embodiment thus constructed, the drive route map to the destination point of motor vehicle is displayed on the display screen of the CRT 10 in accordance with the video signal 106 from the cassette deck and the drive locus is displayed on the map in accordance with the vehicle speed signal 102 and the azimuth signal 100 as the motor vehicle travels.
Referring to Fig. 2, assuming that the motor vehicle is to travel from a start point S to a destination point D via target points V1, V2 and V3, position information on the start point S, the target points V1, V2 and V3 and the destination point Dare entered by the keyboard 26. The position information is set by the coordinates of the display screen. Areas P1, P2 and P3 at which the display of the direction of travel of the motor vehicle is started are set at the target points V1,V2 and V3, respectively. The areas P1, P2 and P3 each has a radius of 130 meters centered at the target points V1, V2 and V3, respectively.The position data of the areas P1, P2 and P3 are prerecorded on the cassette tape and it is read out and stored in the RAM 1 6 when the map information recorded on the cassette tape is read. When the drive locus of the motor vehicle is displayed in one of those areas P1, P2 and P3, the microcomputer 14 carries out an operation to display the direction of travel to be taken by the motor vehicle.
The detection of the direction of travel of the motor vehicle is now explained.
Referring to Fig. 3, an area sectioned by a pair of 45 lines with respect to the direction of travel RD of the motor vehicle, centered at the target point Vn, is defined as a first quadrant, an area which is left-adjacent to the first quadrant is defined as a second quadrant and an area which is right-adjacent to the first quadrant is defined as a fourth quadrant. When the motor vehicle position S is displayed in the area Pn of the target point Vn, the direction of travel of the motor vehicle is determined depending on which quadrant the next target point Vn+1 or the destinatin point D is included in. The determination of the direction of travel of the vehicle is done by a conventional technique.
More specifically, the direction of travel of the motor vehicle is determined in accordance with a sequence shown in a flow chart of Fig. 4. As the motor vehicle travels along the drive route in accordance with the drive route map to the destination point, it is checked in a step 1 00 if the drive locus at a current position of the motor vehicle is within the area Pn of the target point Vn. If the decision in the step 100 is NO, the process goes to END and carries out other routine.
If the decision in the step 100 is YES, the process goes to a step 102 where it is checked if the next target point Van+1 or the destination point D is within the first quadrant shown in Fig. 3 with respect to the target point Vn. If the decision in the step 102 is YES, the process goes to a step 104 to carry out a straight routine. If the decision in the step 102 is NO, the process goes to a step 106 where it is checked if the next target point Van+1 or the destination point D is within the second quadrant with respect to the target point Vn. If the decision in the step 106 is YES, the process goes to a step 108 to carry out a left turn routine.If the decision in the step 106 is NO, the process goes to a step 11 2 where it is checked if the next target piont Van+1 or the destination point D is within the fourth quadrant with respect to the target point Vn. If the decision in the step 112 is YES, the process goes to a step 110 to carry out a right turn routine. If the decision in the step 112 is NO, the process goes to the END to carry out other routine.
Referring to a flow chart of Fig. 5, the right turn routine is explained.
When the process has been shifted to the right turn routine in the step 110 shown in the flow chart of Fig. 4, the right turn routine shown in Fig.
5 is carried out. In a step 200, it is checked if the drive locus of the motor vehicle is within the area Pn of the target point Vn. If the decision in the step 200 is NO, the step 200 is repeated again. If the decision in the step 200 is YES, the process goes to a step 202 where a display indicating the right turn as shown in Fig. 6 is flashed on the display screen of the CRT 1 0, and the process then goes to a step 204 where it is checked if the drive locus of the motor vehicle has reached within a 65 meter radius area centered at the target point Vn. If the decision in the step 204 is NO, the steps 202 and 204 are repeated again. If the decision in the step 204 is YES, the process goes to a step 206 where the right turn display is flashed and an intermittent sound is generated from the speaker 40 to inform to the driver of the approach of the motor vehicle to the target point Vn.Then, in a step 208, it is checked if the drive locus of the motor vehicle has reached the target point Vn. If the decision in the step 208 is NO, the steps 206 and 208 are repeated again. If the decision in the step 208 is YES, the process goes to a step 210 where the flashing right turn display and the intermittent sound from the speaker 40 are stopped.
While the right turn routine has been explained above, the straight routine and the left turn routine are carried out in a similar manner.
In the present embodiment, when the motor vehicle approaches to the target point, the travel of direction of the motor vehicle is determined depending on which quadrant the next target point or the destination point is included in with respect to the current target point. Alternatively, the directions of travel at the respective target points may be previously determined on the map and the data of the directions of travel may be stored in the RAM 1 6 to allow the display of the direction of travel of the motor vehicle.

Claims (9)

Claims
1. A drive guide system for a motor vehicle comprising: (A) a travel distance sensor for sensing a travel distance of said motor vehicle; (B) an azimuth sensor for sensing a direction of travel OT said motor vehicle; (C) a display controlled by display control means for displaying a road map, a start point, a destination point, a target point therebetween, and a current position of said motor vehicle derived from a distance signal from said travel distance sensor and an azimuth signal from said azimuth sensor; (D) input means for inputting information on said road map, said start point, said destination point and said target point to said display control means; and (E) alarm means for outputting a direction of travel to be taken by said motor vehicle when said motor vehicle approaches to said target point.
2. A drive guide system for a motor vehicle according to Claim 1 further comprising: decision means for determining the direction of travel to be taken by said motor vehicle near said target point.
3. A drive guide system for a motor vehicle according to Claim 1 further comprising: memory means for storing the direction of travel to be taken by said motor vehicle at said target point, said stored direction of travel of said motor vehicle being read out for display when said motor vehicle approaches to said target point.
4. A drive guide system for a motor vehicle according to Claim 1, wherein said alarm means outputs right turn information, left turn information and straight information.
5. A drive guide system for a motor vehicle according to Claim 1, wherein said alarm means outputs an alarm sound in addition to said information when said motor vehicle approaches to said target point and goes further close to said target point.
6. A drive guide system for a motor vehicle according to any one of Claim 1 to 5, wherein said alarm means is deactivated when said motor vehicle reaches said target point.
7. A drive guide system for a motor vehicle according to any one of Claims 1 to 5, wherein said display is a cathode ray tube.
8. A drive guide system for a motor vehicle, which system is substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings.
9. A motor vehicle having a drive guide system as claimed in any preceding Claim.
GB08228551A 1981-10-21 1982-10-06 Driver guidance system for motor vehicle Expired GB2111204B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16807681A JPS5870117A (en) 1981-10-21 1981-10-21 Traveling guide device

Publications (2)

Publication Number Publication Date
GB2111204A true GB2111204A (en) 1983-06-29
GB2111204B GB2111204B (en) 1985-06-12

Family

ID=15861391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08228551A Expired GB2111204B (en) 1981-10-21 1982-10-06 Driver guidance system for motor vehicle

Country Status (3)

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JP (1) JPS5870117A (en)
DE (1) DE3238823C2 (en)
GB (1) GB2111204B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158214A2 (en) * 1984-03-28 1985-10-16 Hitachi, Ltd. Navigation system with capability of instructing running direction
DE3609287A1 (en) * 1985-03-20 1986-10-02 Nissan Motor Co., Ltd., Yokohama, Kanagawa NAVIGATION SYSTEM AND METHOD FOR VEHICLES
EP0375818A1 (en) * 1988-12-30 1990-07-04 Aisin Aw Co., Ltd. Navigation apparatus
EP0588086A1 (en) * 1992-08-19 1994-03-23 Aisin Aw Co., Ltd. Voice route-guidance system
GB2271423A (en) * 1992-10-12 1994-04-13 Maspro Denko Kk Vehicle navigation system
GB2272519A (en) * 1992-11-16 1994-05-18 Maspro Denko Kk Navigation system for motor vehicles
GB2272520A (en) * 1992-11-16 1994-05-18 Maspro Denko Kk Navigation system for motor vehicles
US5414629A (en) * 1993-03-31 1995-05-09 Masprodenkoh Kabushikikaisha Navigation system with route determination process capable of determining a desired route readily and correctly
US5442349A (en) * 1992-10-12 1995-08-15 Masprodenkoh Kabushikikaisha Navigation system with route determination process capable of determining a desired route readily and quickly

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JPS5875021A (en) * 1981-10-29 1983-05-06 Nippon Denso Co Ltd Navigator to be mounted on vehicle
JPS5892907A (en) * 1981-11-30 1983-06-02 Toshiba Corp Map reader
JPS58190713A (en) * 1982-05-01 1983-11-07 Honda Motor Co Ltd Displaying device of present position of moving object
JPH0731065B2 (en) * 1982-10-13 1995-04-10 日本電装株式会社 Vehicle navigation system
DE3341679A1 (en) * 1982-11-30 1984-05-30 Teldix Gmbh, 6900 Heidelberg Navigation method for vehicles
JPS6019917U (en) * 1983-07-16 1985-02-12 藤田　登 Heading direction indicator
DE3405125A1 (en) * 1984-02-14 1984-08-16 Uwe Christian Dipl.-Volksw. Dipl.-Päd. 5000 Köln Brandt Microelectronic screen map
DE3510481A1 (en) * 1984-03-23 1985-10-03 Nissan Motor Co., Ltd., Yokohama, Kanagawa Method and device for route-presetting and route-guidance of a vehicle with the aid of a sequence of images represented on a screen
JPS60230185A (en) * 1984-04-27 1985-11-15 三菱電機株式会社 On-board navigation apparatus
JPS6175375A (en) * 1984-04-28 1986-04-17 三菱電機株式会社 On-board navigator
DE3434896A1 (en) * 1984-09-22 1986-04-03 Teldix Gmbh, 6900 Heidelberg Navigation method
DE3437025A1 (en) * 1984-09-29 1986-04-17 Erk 4500 Osnabrück Butzke Combined, computer-controlled road map and route indicator system in motor vehicles
JPS61216098A (en) * 1985-03-20 1986-09-25 日産自動車株式会社 Course guidance unit for vehicle
JPH0613975B2 (en) * 1985-10-21 1994-02-23 マツダ株式会社 Vehicle guidance device
JPH0673159B2 (en) * 1985-10-24 1994-09-14 パイオニア株式会社 Vehicle navigation system
JPS62214317A (en) * 1986-03-14 1987-09-21 Honda Motor Co Ltd Run course display device
JPH0292354A (en) * 1988-09-27 1990-04-03 Atom Kk Incubator
JPH04178587A (en) * 1990-11-13 1992-06-25 Matsushita Electric Ind Co Ltd Car azimuth calculating device
JP3488969B2 (en) * 1994-03-09 2004-01-19 本田技研工業株式会社 Vehicle guidance device
JP2746257B2 (en) * 1996-05-15 1998-05-06 ソニー株式会社 Navigation device
CN103292821B (en) * 2012-03-01 2017-05-24 深圳光启创新技术有限公司 Locating device
JP6443143B2 (en) * 2015-03-11 2018-12-26 アイシン・エィ・ダブリュ株式会社 Map information processing system, map information providing device, map information requesting device, map information processing method, and map information processing program

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JPS5633758B2 (en) * 1973-05-08 1981-08-05
JPS55130208U (en) * 1979-03-09 1980-09-13
US4402050A (en) * 1979-11-24 1983-08-30 Honda Giken Kogyo Kabushiki Kaisha Apparatus for visually indicating continuous travel route of a vehicle
JPS5852516A (en) * 1981-09-22 1983-03-28 Nippon Denso Co Ltd On-vehicle navigator

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158214A3 (en) * 1984-03-28 1987-06-16 Hitachi, Ltd. Navigation system with capability of instructing running direction
EP0158214A2 (en) * 1984-03-28 1985-10-16 Hitachi, Ltd. Navigation system with capability of instructing running direction
DE3609287A1 (en) * 1985-03-20 1986-10-02 Nissan Motor Co., Ltd., Yokohama, Kanagawa NAVIGATION SYSTEM AND METHOD FOR VEHICLES
EP0375818A1 (en) * 1988-12-30 1990-07-04 Aisin Aw Co., Ltd. Navigation apparatus
EP0588086A1 (en) * 1992-08-19 1994-03-23 Aisin Aw Co., Ltd. Voice route-guidance system
EP1365374A1 (en) * 1992-08-19 2003-11-26 Aisin Aw Co., Ltd. Voice route-guidance system
US5793631A (en) * 1992-08-19 1998-08-11 Aisin Aw Co., Ltd. Voice route-guidance system and method having a function for judging approachment to a decision point
EP0833292A1 (en) * 1992-08-19 1998-04-01 Aisin Aw Co., Ltd. Route-guidance system
US5442349A (en) * 1992-10-12 1995-08-15 Masprodenkoh Kabushikikaisha Navigation system with route determination process capable of determining a desired route readily and quickly
GB2271423A (en) * 1992-10-12 1994-04-13 Maspro Denko Kk Vehicle navigation system
US5430653A (en) * 1992-10-12 1995-07-04 Masprodenkoh Kabushikikaisha Navigation system with route determination process capable of determining a desired route readily and quickly
GB2271423B (en) * 1992-10-12 1995-08-30 Maspro Denko Kk Navigation system with route determination process
US5398189A (en) * 1992-11-16 1995-03-14 Masprodenkoh Kabushikikaisha Navigation system for motor vehicles
GB2272519B (en) * 1992-11-16 1995-08-02 Maspro Denko Kk Navigation system for motor vehicles
GB2272520B (en) * 1992-11-16 1995-08-02 Maspro Denko Kk Navigation system for motor vehicles
GB2272520A (en) * 1992-11-16 1994-05-18 Maspro Denko Kk Navigation system for motor vehicles
GB2272519A (en) * 1992-11-16 1994-05-18 Maspro Denko Kk Navigation system for motor vehicles
US5414629A (en) * 1993-03-31 1995-05-09 Masprodenkoh Kabushikikaisha Navigation system with route determination process capable of determining a desired route readily and correctly

Also Published As

Publication number Publication date
DE3238823C2 (en) 1987-05-14
JPS5870117A (en) 1983-04-26
DE3238823A1 (en) 1983-05-05
GB2111204B (en) 1985-06-12
JPS6313129B2 (en) 1988-03-24

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19970228

PCNP Patent ceased through non-payment of renewal fee

Effective date: 19991006