JP2008062673A - Succeeding vehicle information transmission device, following vehicle operation assistant device and operation assistant system equipped with these devices - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a succeeding vehicle information transmission device efficiently transmitting an image of a front visual field and vehicle information regarding traveling of one's own vehicle to a driver of the succeeding vehicle by a simple method. <P>SOLUTION: The succeeding vehicle information transmission device 10 is provided with a front side camera 11, a detector 12, an information conversion means 13 and a display device 14, and is mounted on the vehicle having a vehicle body structure of a size for shielding the front visual field of the succeeding vehicle. The front side camera 11 photographs the front visual field of the vehicle. The detector 12 is provided on the vehicle and detects the vehicle information S regarding traveling of this vehicle. The information conversion means 13 converts the vehicle information S to a visualized two-dimensional bar code (traveling data code) T. The display device 14 is provided on a rear part of the vehicle and projects the image V of the front visual field obtained by the front side camera 11 and the two-dimensional bar code T. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a following vehicle information transmission device that provides a forward view and own vehicle information to a following vehicle, and a driving support device for a following vehicle that assists driving operation based on vehicle information provided from the preceding vehicle. And a driving support system including these.

  When a large vehicle such as a truck is a front vehicle traveling on an urban area, a highway, or the like, a range that blocks the forward view of the subsequent vehicle is large. Therefore, a display device that displays images and characters is mounted on the rear, and an image of the front view captured by the camera provided on the front is displayed on the display device. Patent Document 1 discloses an information display device that provides information to a following vehicle. This Patent Document 1 discloses that a display device is also mounted on the front part of a vehicle and a rear view is displayed on a vehicle facing forward. This information display device is premised on supplementing the field of view that the own vehicle blocks with respect to the following vehicle and the preceding vehicle when the vehicle is stopped due to an intersection or traffic jam or in a low speed state close to this. It also describes that a display device can be used as an advertising means during traveling by connecting a playback device.

  Further, Patent Document 2 discloses an in-vehicle road condition display device that includes a video camera that captures a road condition in the vehicle traveling direction and a flat display that is attached to the back of the vehicle so that it can be seen from the following vehicle. This in-vehicle road condition display device also displays the road condition ahead of the image captured by the video camera on a flat display while the road is congested, and displays an advertisement image during normal operation.

Patent Document 3 discloses a subsequent vehicle warning method for receiving behavior information of a preceding vehicle transmitted from a preceding vehicle traveling ahead of the own vehicle and performing a warning based on the behavior information to the driver of the own vehicle. . The subsequent vehicle warning method further transmits at least one of the behavior information of the preceding vehicle or the behavior information of the own vehicle to the subsequent vehicle.
Japanese Patent Laid-Open No. 9-261627 Japanese Patent Laid-Open No. 7-117585 JP-A-7-44800

  As shown in Patent Documents 1 and 2, for the driver of the succeeding vehicle, obtaining an image of the field of view ahead of the preceding vehicle helps safe driving. However, merely providing a video is not a sufficient measure for safe driving because it is not a substitute for relying on the vision and judgment of the driver of the following vehicle. In particular, the image of the display device may be difficult to see depending on the surrounding environment.

  On the other hand, in the apparatus described in Patent Document 3, a warning based on the behavior information of the preceding vehicle is notified by a speaker or a vehicle-mounted display. Therefore, the driver can quickly obtain information other than that obtained from the field of view blocked by the preceding vehicle. However, since it is information on what is not actually seen by the driver of the following vehicle, judgment and action tend to be delayed.

  Patent Document 3 uses infrared rays as communication means for transmitting behavior information of a preceding vehicle to a succeeding vehicle. The more information transmitted as the behavior information of the preceding vehicle, the longer it takes to communicate. Furthermore, the behavior information of each vehicle continues to change from moment to moment. However, it is rare that the distance between the front and rear vehicles during travel is kept constant. Therefore, it is difficult to maintain a stable communication environment, and the amount of information to be transmitted is limited.

  It is also conceivable to use radio waves as a communication means. However, when a plurality of vehicles are approaching at the same time, information for identifying the positional relationship between the vehicle in front and the vehicle in the rear, or a vehicle that travels in front of the same lane when one side has two or more lanes And means for identifying mutual behavior information, such as information for identifying a vehicle traveling in front of an adjacent lane. In addition, it is necessary to secure a specific frequency band for communication and equipment.

  Therefore, the present invention provides an information transmission device for a subsequent vehicle that transmits an image of a forward view and vehicle information related to the traveling of the own vehicle to a driver of the subsequent vehicle in an efficient and simple manner, and the information transmission for the subsequent vehicle. A driving support device for a following vehicle that quickly reads vehicle information of a preceding vehicle transmitted from a preceding vehicle including the device and assists a driving operation, and a driving support system including these.

  An information transmission device for a succeeding vehicle according to an embodiment of the present invention includes a front camera, a detector, information conversion means, and a display device, and is mounted on a vehicle having a vehicle body structure with a size that blocks the forward view of the subsequent vehicle. The front camera images the front view of the vehicle. The detector is provided in the vehicle and detects vehicle information related to traveling of the vehicle. The information conversion means converts the vehicle information into a visualized travel data code. The display device is provided at the rear portion of the vehicle and displays a front view image and a travel data code acquired by the front camera.

  In this case, when the travel data code is displayed as a two-dimensional bar code, the subsequent vehicle can be easily captured as image information. This travel data code includes the travel speed of the vehicle, the rate of change of the travel speed of the vehicle, the inter-vehicle distance between the vehicle and the preceding vehicle traveling in front of the vehicle, the travel speed of the preceding vehicle, and the change in the travel speed of the preceding vehicle. At least one of the following: rate, presence / absence of activation of vehicle brake, presence / absence of activation of vehicle exhaust brake, vehicle length, total vehicle weight, vehicle destination, vehicle departure point, vehicle continuous operation time Including one.

  The travel speed of the vehicle and the rate of change thereof are calculated based on a signal output from a speedometer provided as one of the detectors in the vehicle. The inter-vehicle distance between the vehicle and the preceding vehicle traveling in front of the vehicle, the traveling speed of the preceding vehicle, and the rate of change thereof are determined by analysis from images acquired by the front camera. Alternatively, a distance measuring sensor may be provided in the front part of the vehicle to measure the inter-vehicle distance to the preceding vehicle and obtain the traveling speed and speed change rate of the preceding vehicle based on the traveling speed of the vehicle.

  The presence / absence of activation of the vehicle brake and the exhaust brake is detected by a brake switch and an exhaust brake switch individually provided as one of detectors in the vehicle. The vehicle length, total weight, destination, and departure point are each input in advance. The continuous operation time of the vehicle is measured by a timer provided as one of the detectors.

  Further, a distance measuring sensor may be provided at the rear part of the vehicle, and the distance between the rear vehicles traveling behind the vehicle may be measured to notify that the rear vehicle is too close using a display device. It is also preferable to provide a warning display device that displays characters or images with special visual effects on the display device when the vehicle information detected by the detector matches a specific condition set in advance.

  The display device is configured by a liquid crystal display, or a projector and a projection surface.

  According to another aspect of the present invention, there is provided a driving support device for a follower vehicle, which is provided in a vehicle that travels behind a preceding vehicle on which a subsequent vehicle information transmission device is mounted, a code reading camera, an information return unit, an auxiliary control unit, Have The succeeding vehicle information transmission device converts its own vehicle information into a visualized travel data code and displays it on a display device provided at the rear. The code reading camera reads the travel data code displayed by the preceding vehicle. The information reduction means acquires vehicle information of the preceding vehicle from the travel data code. The auxiliary control unit supports the driving operation of the own vehicle by comparing the driving information of the own vehicle with the vehicle information of the preceding vehicle.

  A vehicle according to an aspect of the present invention includes a subsequent vehicle information transmission device. The information transmission device for a succeeding vehicle displays an image obtained by capturing a front view with a camera and a travel data code visualizing vehicle information related to travel of the vehicle on a display device provided at the rear of the vehicle.

  Moreover, the vehicle of the other form which concerns on this invention is provided with the driving assistance apparatus for tracking vehicles. The driving support device for a follower vehicle acquires the vehicle information of the preceding vehicle by reading the traveling data code when traveling behind the preceding vehicle displaying the traveling data code visualizing its own vehicle information at the rear, and this vehicle information Compare driving information with your own driving information to support driving operations.

  The driving support system according to the present invention is constructed by a following vehicle information transmission device mounted on a preceding vehicle going ahead and a following vehicle driving support device mounted on a following vehicle going behind the preceding vehicle.

  According to the information transmission device for the subsequent vehicle according to the present invention, the vehicle information of the own vehicle is converted into a visualized travel data code, and displayed on the display device provided at the rear together with the image of the front field of view. Provides their own vehicle information. The driver of the succeeding vehicle can indirectly see the front view of the preceding vehicle that blocks the view by the display device. Further, since the vehicle information is displayed as a travel data code, it can be read instantaneously by a code reading camera.

  Therefore, even if the relative position is slightly deviated due to the inter-vehicle distance or vibration with respect to the preceding vehicle, it is difficult for data to be lost. In addition, since the vehicle information is displayed in the travel data code, it is possible to deal with an unspecified number of subsequent vehicles without setting identification information for each vehicle, and more information than visual information on the images for the subsequent vehicles. Can be provided. In addition, when acquiring vehicle information of a vehicle on which the following vehicle travels ahead, it is only necessary to obtain the travel data code of the vehicle traveling immediately before, so no special communication means is required.

  According to the following vehicle driving support apparatus according to the present invention, since the traveling data code displayed on the rear part by the preceding vehicle is obtained by the code reading camera, a lot of information can be obtained instantaneously, noise mixing and data It is hard to cause omission. In addition, since the vehicle information is displayed as the travel data code, it is possible to appropriately obtain the vehicle information of the preceding vehicle that is replaced at any time without the identification information.

  According to the vehicle including the information transmission device for a succeeding vehicle according to the present invention, a forward view can be provided to the succeeding vehicle even if the vehicle has a vehicle body structure that blocks the view of the succeeding vehicle. Further, since vehicle information relating to the traveling of the vehicle is also provided, the following vehicle can travel more safely. Further, according to the vehicle including the following vehicle driving support device, the vehicle information of the preceding vehicle can be acquired by reading the traveling data code displayed on the rear part by the preceding vehicle traveling ahead.

  Therefore, the visual information obtained by the driver who operates the following vehicle, the judgment based on the visual information, and the individual differences in the response, and the notification, warning, and avoidance so that safe driving can be maintained at an earlier stage than the human judgment. Therefore, it is possible to assist the driver for safe driving.

  According to the driving support device for a following vehicle according to the present invention, the vehicle information of the preceding vehicle that reads the traveling data code displayed on the rear portion of the preceding vehicle is obtained. By obtaining information other than the information obtained by the driver's vision, it is possible to support the driving operation of the own vehicle at an early stage, and thus it is possible to travel safely even in a state where the forward visibility is limited.

  A driving support system 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. The driving support system 1 shown in FIG. 3 is for a following vehicle information transmission device 10 installed in a preceding vehicle among vehicles traveling in the same lane and a following vehicle equipped in a succeeding vehicle following the preceding vehicle. It is comprised with the driving assistance apparatus 20. FIG. Here, for convenience of explanation in the embodiment, front, rear, right, and left are respectively defined based on the traveling direction of each vehicle.

  First, the following vehicle information transmission device 10 will be described with reference to FIGS. 1 to 3 by taking as an example a case where the information transmission device 10 is mounted on a truck 100 with a van mounted. A track 100 shown in FIG. 1 is one form of a preceding vehicle (vehicle) having a vehicle body structure that blocks the forward view of the following vehicle 200. In addition to the truck 100, the container transport trailer, and the bus that are van-mounted as vehicles that greatly obstruct the forward view of the following vehicle 200, the total height is nearly twice as high as the line of sight of the driver of the following vehicle 200. High vehicles and the like can also be targeted.

  1 to 3 includes a front camera (see FIG. 2) 11, a detector (see FIG. 3) 12, an information conversion means (see FIG. 3) 13, and a display device (see FIG. 3). 14). As shown in FIG. 2, the front camera 11 is attached to the upper part on the inner side of the windshield 101 of the track 100. The front camera 11 may be placed on the dashboard 102 so as to be close to the line of sight of the driver of the following vehicle 200, or may be provided at the height of the front light 103. May be mounted on the cab 104 to provide

  As shown in FIG. 3, the detector 12 includes a speedometer 121, a front ranging sensor 122, a rear ranging sensor 123, a brake switch 124, an exhaust brake switch 125, and a timer 126. The front distance measuring sensor 122 is provided in the front bumper 105 as shown in FIG. 2, and measures the inter-vehicle distance to the front vehicle 300 traveling in front of the truck 100. As shown in FIG. 1, the rear ranging sensor 123 is provided between the rear stop lamps 106 and measures an inter-vehicle distance to the following vehicle 200 that follows the truck 100. The brake switch 124 is provided on the brake pedal of the truck 100 and is turned on while the driver is stepping on the brake pedal, and is turned off when released. The exhaust brake switch 125 is provided on the accelerator pedal. When the exhaust brake is activated, the exhaust brake switch 125 is turned on when the driver releases his / her leg from the accelerator pedal, and turned off when the accelerator pedal or the clutch pedal is depressed.

  The timer 126 mainly measures the traveling time of the truck 100. The running time can be set in various ways, for example, from when the ignition key is inserted to when it is removed, until the engine is started and then stopped, except when the speedometer 121 indicates zero. What is important as travel time is to measure the continuous operation time of the driver. Further, the speed change rate (acceleration, deceleration) and average speed of the truck 100 which is the own vehicle are calculated based on the data of the speedometer 121, and the detection data of the speedometer 121 and the front distance measuring sensor 122 are used. The timer 126 is used to calculate the traveling speed, speed change rate (acceleration rate, deceleration rate), and average speed of the preceding vehicle 300.

  The inter-vehicle distance to the front vehicle 300, the traveling speed of the front vehicle 300, and the speed change rate can also be obtained by analyzing from the video acquired by the front camera 11 without using the front distance measuring sensor 122. . In addition, a switch for detecting the state of the winker, the clutch, and the gear may be provided.

  The information conversion means 13 is the output data of the detector 12 such as travel speed, speed change rate, inter-vehicle distance to the forward vehicle 300, travel speed and speed change rate of the forward vehicle 300, presence or absence of brake operation, exhaust brake operation. Presence / absence and continuous operation time are converted into one two-dimensional barcode T as vehicle information S of the truck 100. This two-dimensional barcode T is an example of a visualized travel data code. Therefore, another form of visualization code may be used. For example, a one-dimensional barcode may be used, but using a two-dimensional barcode makes it easier to transmit more information without error. For example, if a QR code (registered trademark) is used, information can be recognized properly even when the camera is tilted, and it is a communication procedure for a CAN that is in practical use as an in-house LAN. It is possible to secure a communication amount sufficient to transmit 8 bytes of information.

  In addition to the above, as the input data P, a part of which is shown in FIG. 3, the destination, departure place, vehicle length, total vehicle weight, company name or company code that owns this vehicle, current driver The name or driver code, the name of the cargo, etc. may be further included as the vehicle information S. These input data P are set before the truck 100 starts running. These input data P are also converted into one two-dimensional barcode T as vehicle information S together with detection data obtained by the detector 12.

  As shown in FIG. 1, the display device 14 is provided at the rear portion of the track 100. The display device 14 is a large-sized liquid crystal display, and is suspended from the upper end of the rear part of the luggage room 107 mounted on the van. The display device 14 can be flipped upward when the door 108 at the rear of the luggage compartment 107 is opened. Instead of a liquid crystal display, a plasma display, an organic electroluminescence display, an LED display configured by arranging light emitting diodes by the number of display pixels, or the like may be used.

  The image V of the forward field of view captured by the front camera 11 and the two-dimensional barcode T created by the information conversion means 13 are once captured and combined by the image processing unit 15 and then displayed on the display device 14. . The two-dimensional barcode T is updated according to the vehicle information S that changes every moment. In FIG. 3, the two-dimensional barcode T is always displayed on the lower left portion of the display device 14.

  The two-dimensional barcode T is not directly understandable by the driver of the following vehicle 200. Therefore, the two-dimensional barcode T may be displayed in a time interval that does not matter to the driver of the succeeding vehicle 200 by replacing it with the video V of the front view. In addition to this, the image processing unit 15 synthesizes the date, time, and part of the vehicle information S, which is a character, and displays it on the display device 14. The vehicle information S displayed in characters may be replaced with the remaining vehicle information S at regular time intervals so that all information is displayed in order.

  A recording unit 16 and a warning display device 17 are further connected to the image processing unit 15. The recording unit 16 records the same video information as the video V displayed on the display device 14. By recording the video V, when an accident occurs in front of the truck 100, or when the truck 100 itself encounters an accident, it can be used as a recorded video for elucidating the situation of the accident. Further, the advertisement video may be recorded in the recording unit 16, and the image processing unit 15 may appropriately read the advertisement video from the recording unit 16 and display it on the display device 14.

  The warning display device 17 acquires the vehicle information S, and outputs a warning image to the image processing unit 15 when preset conditions are met. The warning image is an image that is displayed in order to appeal to the driver's vision of the following vehicle 200 and call attention in order to avoid the danger that the following vehicle 200 is imminent. For example, in addition to the character display such as “Attention for rear-end collision” shown in FIG. 3, image processing with a visual effect such as blinking or changing the color of the entire video V of the display device 14 may be applied as the warning image. it can.

  Next, the following vehicle driving support apparatus 20 will be described with reference to FIG. The following vehicle driving support device 20 is used when the following vehicle information transmission device 10 is mounted on a preceding vehicle traveling ahead. The following vehicle driving support device 20 includes a code reading camera 21, an information reduction unit 22, and an auxiliary control unit 23.

  The code reading camera 21 is provided at the front portion of the following vehicle 200 and reads the two-dimensional barcode T displayed on the display device 14 by the truck 100 as the preceding vehicle on which the succeeding vehicle information transmission device 10 is mounted. The two-dimensional barcode T is an example of a travel data code that visualizes the vehicle information S of the preceding vehicle displayed on the display device 14 by the information transmission device 10 for the following vehicle.

  The information reduction means 22 converts the two-dimensional barcode T imaged by the code reading camera 21 into the vehicle information S of the truck 100 that is the preceding vehicle. The auxiliary control unit 23 compares the vehicle information S of the truck 100 with the driving information of the own vehicle as the succeeding vehicle 200, and based on the rate of change of the vehicle information S of the truck 100, the ASV ( The advanced safety vehicle) system 24 is linked to support the driving operation.

  The following vehicle 200 includes an audio notification unit 241, a warning buzzer 242, a warning lamp 243, a brake drive unit 244, and an accelerator return unit 245 as the ASV system 24. The auxiliary control unit 23 outputs guidance from the voice notification unit 241, sounds a warning buzzer 242, or blinks the warning lamp 243 in order to support safe driving operation by the driver of the following vehicle 200. Thus, the driver of the own vehicle is alerted and the brake drive unit 244 or the accelerator return unit 245 is operated to operate the brake or accelerator directly and faster than the driver reacts. Thereby, the auxiliary control unit 23 assists the driver of the own vehicle, which is the succeeding vehicle 200, to travel safely.

  As a specific situation, when the truck 100 as the preceding vehicle suddenly activates the brake, when the distance between the truck 100 and the preceding vehicle 300 immediately before it suddenly decreases, the end of the traffic jam ahead This may be the case when the tail is approaching.

  These conditions are obtained from the two-dimensional barcode T as the vehicle information S while the driver visually understands from the video V projected on the display device 14 of the truck 100 ahead. Since the driver can take action quickly by the auxiliary control unit 23 reacting as described above, an imminent danger can be avoided at an early stage. Therefore, even when the front view is limited by a large vehicle, it contributes to the safe driving of the following vehicle 200.

  In this driving support system 1, a truck 100 that is a preceding vehicle traveling in front provides a forward view to the following vehicle 200 and converts the vehicle information S of this track 100 into a two-dimensional barcode T to convert the following vehicle. The succeeding vehicle 200 acquires the displayed two-dimensional barcode T with the code reading camera 21. In other words, signals that distinguish each other between the vehicles that are lined up and down are unnecessary, and both the following vehicle information transmission device 10 and the following vehicle driving support device 20 can deal with an unspecified number of opponents. Therefore, it can be easily constructed as a system.

  The following vehicle information transmission device 10 according to the second embodiment of the present invention will be described with reference to FIG. Components having the same functions as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Further, since this succeeding vehicle information transmission device 10 has the same function as that of the block diagram shown in FIG. 3, refer to FIG. 3 and the description thereof for details.

  The subsequent vehicle information transmission device 10 shown in FIG. 4 is different from the first embodiment in the configuration of the display device 14. In this embodiment, the display device 14 is incorporated in the rear part of the track 100 as shown in FIG. The display device 14 includes a projector (projector) 141 and a projection surface (screen) 142. The projector 141 is attached to the main body 143 accommodated in the upper center of the rear part of the luggage compartment 107 of the van-mounted truck 100, the arm 144 protruding from the main body 143 to the rear of the vehicle body, and the tip of the arm 144. Mirror 145.

  The high-intensity light emitted from the main body 143 passes through the arm 144, is reflected by the mirror 145, and is irradiated on the projection surface 142. The projector 141 may project the video V when the succeeding vehicle 200 approaches rearward in conjunction with the rear ranging sensor 123. Thereby, power consumption can be suppressed to a low level.

  The projection surface 142 is provided on the outer wall of the door 108 at the rear of the luggage compartment 107 that is the rear of the vehicle body, and the image V output from the projector 141 is displayed. The projection surface 142 may be a machined outer wall of the luggage compartment 107 mounted on the van so that the video V can be easily reflected, or may be specially painted or pasted with a sheet. good. Further, in order to make it easy for the following vehicle 200 to see the video V, a light avoiding hood may be attached around the projection surface 142.

  By configuring the display device 14 with the projector 141 and the projection surface 142, the display device 14 does not get in the way when the door 108 of the luggage compartment 107 mounted on the van is opened. Further, the unit price of the display device 14 is significantly lower than that of a liquid crystal display or the like, and the weight of the display device 14 can be reduced. Further, since the main body 143 of the projector 141 is disposed in the cargo compartment 107, only the mirror 145 exposed to the outside of the cargo compartment 107 of the truck 100 can be used as a waterproof measure against rainwater or the like and a protective measure against the bounced stone. You can give it to. Even if the mirror 145 is broken in any way, it is easy to replace it at a low cost, and the repair cost is small.

  Information transmitted to the following vehicle 200 as the vehicle information S is not limited to the information described above. For example, when the preceding vehicle that is equipped with the information transmission device 10 for the following vehicle and includes a drowsy driving prevention device, the driver's attention level of the preceding vehicle with respect to the following vehicle 200, the amount of vehicle wobbling, Information for determining the driver's drowsiness status of the vehicle, such as continuous running time, can also be shown as a percentage.

  Further, when the truck 100, which is a preceding vehicle on which the information transmission device 10 for the following vehicle is mounted, further includes a driving support device 20 for the following vehicle, as shown in FIG. It is also possible to take in the vehicle information of (the vehicle preceding by two for the succeeding vehicle) 300 and provide it as a two-dimensional barcode T to the succeeding vehicle 200 together with the vehicle information S of the own vehicle. That is, as vehicle information of the preceding vehicle 300 traveling in front of the track 100, the traveling speed, the traveling speed change rate (acceleration, deceleration), the preceding vehicle and the vehicle ahead (the vehicle that is three previous to the following vehicle amount). It is possible to provide the same vehicle amount information as the vehicle information S of the own vehicle that the truck 100 provides to the following vehicle 200 such as the inter-vehicle distance. When both the information transmission device 10 for the following vehicle and the driving support device 20 for the following vehicle are provided, the front camera 11 that captures the front field of view and the code reading camera 21 that reads the two-dimensional barcode T must be handled by one camera. Is also possible.

  As described above, a plurality of vehicles traveling in the same lane each include the following vehicle information transmission device 10 and the following vehicle driving support device 20, thereby preventing or minimizing a multiple rear-end collision accident. Can do.

The perspective view which looked at the truck equipped with the information transmission device for succeeding vehicles among the driving support systems of a 1st embodiment concerning the present invention from the right rear. The perspective view which looked at the track shown in Drawing 1 from the left front. The block diagram of the driving assistance system which the information transmission apparatus for succeeding vehicles shown in FIG. 1 comprises with the driving assistance apparatus for following vehicles. The perspective view which looked at the truck provided with the information transmission device for succeeding vehicles of a 2nd embodiment concerning the present invention from the right rear. FIG. 5 is a side view showing a vehicle platoon including a driving support system including the subsequent vehicle information transmission device shown in FIG. 4.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Driving assistance system, 10 ... Information transmission apparatus for succeeding vehicles, 11 ... Front camera, 12 ... Detector, 13 ... Information conversion means, 14 ... Display apparatus, 20 ... Driving assistance apparatus for following vehicles, 21 ... Code reading camera , 22 ... Information reduction means, 23 ... Auxiliary control unit, 100 ... Truck (preceding vehicle), 122 ... Front ranging sensor, 123 ... Rear ranging sensor, 141 ... Projector, 142 ... Projection plane, 200 ... Subsequent vehicle, 300: preceding vehicle, S: vehicle information, T: two-dimensional barcode (travel data code), P: input data (destination, departure place, vehicle length, total vehicle weight), V: video.

Claims (12)

An information transmission device for a subsequent vehicle mounted on a vehicle having a vehicle body structure with a size that blocks the front view of the subsequent vehicle,
A front camera for imaging a front view of the vehicle;
A detector provided in the vehicle for detecting vehicle information relating to the running of the vehicle;
Information conversion means for converting the vehicle information into a visualized travel data code;
An information transmission device for a subsequent vehicle provided at a rear portion of the vehicle, the display device displaying an image of a front field of view acquired by the front camera and a travel data code created by the information conversion means. .   2. The information transmission apparatus for a succeeding vehicle according to claim 1, wherein the travel data code is displayed as a two-dimensional bar code. The travel data code is
The traveling speed of the vehicle, the rate of change of the traveling speed of the vehicle, the inter-vehicle distance between the vehicle and the preceding vehicle traveling in front of the vehicle, the traveling speed of the preceding vehicle, and the rate of change of the traveling speed of the preceding vehicle , Whether the brake of the vehicle is operated, whether the exhaust brake of the vehicle is operated, the length of the vehicle, the total weight of the vehicle, the destination of the vehicle, the starting point of the vehicle, the continuous operation time of the vehicle The information transmission device for a succeeding vehicle according to claim 1, comprising at least one of the following.   The information transmission device for a succeeding vehicle according to claim 1, further comprising a distance measuring sensor at a front portion of the vehicle, and measuring an inter-vehicle distance to a preceding vehicle traveling in front of the vehicle.   The information transmission device for a succeeding vehicle according to claim 1, further comprising a distance measuring sensor at a rear portion of the vehicle, and measuring an inter-vehicle distance to a rear vehicle traveling behind the vehicle.   A warning display device that displays characters or a video with a special visual effect on the display device when vehicle information detected by the detector matches a specific condition set in advance. Item 4. The information transmission device for a succeeding vehicle according to Item 1.   The information transmission device for a succeeding vehicle according to claim 1, wherein the display device is a liquid crystal display.   The information transmission apparatus for a succeeding vehicle according to claim 1, wherein the display device includes a projector and a projection surface.   An information transmission device for a succeeding vehicle that displays an image obtained by capturing a front view of the vehicle with a camera and a travel data code that visualizes vehicle information related to travel of the vehicle on a display device provided at the rear of the vehicle. A vehicle characterized by that. Driving support for a follower vehicle equipped on a vehicle traveling behind a preceding vehicle equipped with a subsequent vehicle information transmission device that converts the vehicle information into a visualized travel data code and displays it on a display device provided at the rear. A device,
A code reading camera for reading the travel data code;
Information reduction means for acquiring the vehicle information of the preceding vehicle from the travel data code acquired by the code reading camera;
A driving support apparatus for a follower vehicle, comprising: an auxiliary control unit that supports the driving operation of the vehicle by comparing the vehicle information of the preceding vehicle with driving information of the vehicle.   When traveling behind the preceding vehicle displayed on the rear as a travel data code that visualizes the vehicle information of the vehicle, the vehicle data of the preceding vehicle is acquired by reading the travel data code, and the vehicle information and the self-driving A vehicle comprising a follow-up vehicle driving support device that supports driving operation by comparing with information. For a succeeding vehicle that displays an image obtained by imaging a front view of a preceding first vehicle with a front camera and a travel data code that visualizes vehicle information related to travel of the vehicle on a display device provided at the rear of the vehicle An information transmission device;
The vehicle data of the first vehicle is obtained by reading the travel data code with a code reading camera provided in a second vehicle following the rear of the first vehicle, and the vehicle information and the second vehicle A driving support device for a following vehicle that supports the driving operation of the second vehicle by comparing the driving information of
A driving support system comprising:

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