JP2007018142A - Vehicle periphery monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle periphery monitoring device capable of avoiding collision of a vehicle before it happens by easily detecting presence/absence of a forward vehicle with high accuracy. <P>SOLUTION: This vehicle periphery monitoring device has: infrared-emitting diodes 1A, 2A, 3A respectively provided in a headlight 1, a tail lamp 2, and a turn indicator 3; a front camera 4, a rear camera 5, and a side camera 6 provided in one's own vehicle, imaging infrared light from the infrared-emitting diodes 1A, 2A, 3A of another vehicle; a vehicle speed sensor 8 detecting a vehicle speed of the own vehicle; an arithmetic processing part 7 taking in a vehicle speed signal detected by the vehicle speed sensor 8 and imaging data imaged by each the camera 4, 5, 6, calculating a relative distance and a relative speed between the own vehicle and the other vehicle, and calculating a braking distance allowing the avoidance of the collision of the own vehicle and the other vehicle on the basis of a calculation result thereof; and a monitor 7 and a speaker 10 each issuing a warning when the actual relative distance between the own vehicle and the other vehicle approaches the braking distance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle periphery monitoring device, and more particularly to a vehicle periphery monitoring device suitable for avoiding a collision between vehicles.

  A rear-end collision of a vehicle on a general road or an expressway, or a collision of heads of vehicles at an intersection is often due to a driver's misrecognition. For example, if the vehicle ahead stops due to a red light, or if the vehicle ahead stops due to an emergency, the driver of the following vehicle considers the distance between the vehicle ahead and the vehicle that stopped and the vehicle speed at that time. Then, the brakes are applied, but if the judgment is wrong, a situation such as a rear-end collision occurs. Further, at intersections, when the situation on the intersecting road side is particularly difficult to understand, it often collides with the encounter head.

Therefore, as a device for avoiding a rear-end collision or a head-on collision as described above, a front vehicle is detected by irradiating a millimeter wave in front of the vehicle and detecting a reflected wave thereof, or a situation in front of the vehicle is distant. There has been proposed a vehicle periphery monitoring device that captures an image with an infrared camera and detects a preceding vehicle from the imaging result. Further, in this vehicle periphery monitoring device, a far-infrared camera is provided on both the left and right sides of the vehicle to form a stereo camera, and the presence or absence of a forward vehicle is detected by performing image processing on an image captured by the stereo camera (for example, (See Patent Document 1 and Patent Document 2).
JP 2001-6096 A JP 2002-298298 A

  However, among the above-described conventional techniques, in the case of detecting a forward vehicle by irradiating a millimeter wave, the millimeter wave is reflected by an unspecified number of obstacles, so that it is difficult to specify the forward vehicle. is there.

  Further, in the case of detecting the front vehicle by imaging the front of the vehicle with the far-infrared camera, the far-infrared camera itself is very expensive and the imaging with the far-infrared camera is limited to use only at night. Moreover, when imaging with a stereo camera, it is necessary to tune according to the shape of the vehicle on which the stereo camera is installed, and there is a problem that the detection accuracy of the preceding vehicle is affected by the tuning accuracy.

  The subject of this invention is providing the vehicle periphery monitoring apparatus which can avoid the collision of a vehicle beforehand by detecting the presence or absence of a front vehicle easily and with high precision.

  In order to solve the above-mentioned problem, the invention according to claim 1 is an infrared light emitting diode which is embedded in at least one of the front part of the vehicle, the rear part of the vehicle and the side part of the vehicle and emits infrared light, and the other vehicle provided in the own vehicle. A light receiving means for receiving infrared light emitted from the infrared light emitting diode, a vehicle speed detecting means for detecting the vehicle speed of the own vehicle, a light reception signal received by the light receiving means and a vehicle speed signal detected by the vehicle speed detecting means. A calculation means for calculating a relative speed and a relative distance between the vehicle and the other vehicle and calculating a braking distance capable of avoiding a collision between the vehicle and the other vehicle based on the calculation result; Warning means for issuing a warning when an actual relative distance approaches the braking distance is provided.

  According to the above configuration, when the other vehicle is decelerating in a red signal while trying to stop or stop forward, the infrared light emitting diode embedded in the rear part of the other vehicle decelerates when the other vehicle stops or stops. Send a signal to the effect. The following own vehicle receives the signal from the infrared light emitting diode by the light receiving means, and detects the vehicle speed of the own vehicle by the vehicle speed detecting means. The calculation means takes in the light reception signal received by the light reception means and the vehicle speed signal detected by the vehicle speed detection means to calculate the relative speed and relative distance between the own vehicle and the other vehicle, and based on the calculation result, Calculate the braking distance that can avoid collision with the car. The warning means issues a warning when the actual relative distance between the own vehicle and the other vehicle approaches the braking distance calculated by the calculation means. As a result, the driver of the own vehicle depresses the brake and decelerates the vehicle, so that it is possible to prevent the own vehicle from colliding with another vehicle.

  If another vehicle approaches from behind when the host vehicle stops or decelerates due to a red light, the warning means warns that the other vehicle is approaching from behind. To the driver.

  According to a second aspect of the present invention, in the first aspect, the infrared light emitting diode is embedded in at least one of a headlight, a tail lamp, and a winker.

  A third aspect of the present invention is the method according to the first or second aspect, wherein the infrared light emitting diode blinks when the vehicle travels and is continuously lit when the vehicle is stopped, while the computing means is in a lighting state of the infrared light emitting diode. It is characterized by judging whether the other vehicle is running or stopped.

  According to a fourth aspect of the present invention, in the first aspect, the light receiving means is a front camera provided at the front of the vehicle, a rear camera provided at the rear of the vehicle, and a side camera provided at both sides of the vehicle. It is characterized by.

  According to a fifth aspect of the present invention, there is provided an infrared light emitting diode that is embedded in a traffic light and emits infrared light when a red signal is emitted, a light receiving means that is provided in a vehicle and receives infrared light emitted from the infrared light emitting diode, and a vehicle speed. Vehicle speed detection means for detecting the vehicle, the light reception signal received by the light reception means and the vehicle speed signal detected by the vehicle speed detection means, and the distance between the traffic light and the vehicle and the approach speed of the vehicle to the traffic light are calculated. And an arithmetic means for calculating a braking distance of the vehicle capable of avoiding an accident at an intersection or a pedestrian crossing provided with the traffic light based on a result of the calculation, and an actual distance between the vehicle and the traffic light is calculated. And warning means for issuing a warning when approaching the braking distance calculated by the means.

  According to the above configuration, in the case of a red signal, infrared light is emitted from the infrared light emitting diode embedded in the traffic light, and this infrared light is received by the light receiving means provided in the vehicle. Further, vehicle speed detection means provided in the vehicle detects the vehicle speed of the host vehicle. The calculation means takes in the light reception signal received by the light reception means and the vehicle speed signal detected by the vehicle speed detection means, the distance between the intersection or pedestrian crossing where the traffic light is provided and the vehicle, and the approach speed of the vehicle to the intersection or pedestrian crossing And the braking distance of the vehicle capable of avoiding an accident at the intersection or pedestrian crossing is calculated based on the calculation result. The warning unit issues a warning when the actual distance between the vehicle and the intersection or pedestrian crossing approaches the braking distance calculated by the calculation unit. As a result, the driver depresses the brake and decelerates or stops the vehicle, so that it is possible to prevent an accident from occurring at the intersection or pedestrian crossing.

  According to the present invention, the presence / absence of a preceding vehicle can be detected easily and with high accuracy, and a vehicle collision can be avoided in advance.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a schematic configuration of a vehicle periphery monitoring apparatus according to the present invention. In the figure, the right side from the broken line is the other vehicle side, and the left side from the broken line is the own vehicle side. The headlight 1 on the other vehicle side is provided with an infrared light emitting diode 1A, the tail lamp 2 is provided with an infrared light emitting diode 2A, and the winker 3 is provided with an infrared light emitting diode 3A. On the own vehicle side, a front camera 4 is provided at the front of the vehicle, a rear camera 5 is provided at the rear of the vehicle, and side cameras 6 are provided as light receiving means on both sides of the vehicle side. Each infrared light emitting diode 1A, 2A, 3A blinks when the vehicle (in this embodiment, another vehicle) is running, and lights continuously when the vehicle is stopped. Note that the blinking speed of each of the infrared light emitting diodes 1A, 2A, 3A is proportional to the traveling speed of the vehicle, and for example, the blinking interval is set shorter as the traveling speed increases.

  Further, an arithmetic processing unit (ECU: Electronic Control Unit) 7 is provided on the own vehicle side as arithmetic means, and the front camera 4, the rear camera 5 and the side camera 6 are electrically connected to the arithmetic processing unit 7. Further, on the vehicle side, a vehicle speed sensor 8 as a vehicle speed detection means and a monitor 9 and a speaker 10 as warning means are provided, respectively. These vehicle speed sensor 8, monitor 9 and speaker 10 are also electrically connected to the arithmetic processing unit 7. ing.

  Although not shown in the figure, infrared light emitting diodes are similarly provided in the headlight, tail lamp and winker on the own vehicle side. Further, on the other vehicle side, a front camera, a rear camera, a side camera, a vehicle speed sensor, a monitor, a speaker, an arithmetic processing unit, and the like are provided.

  FIG. 2 shows the operation of the vehicle periphery monitoring apparatus having the above configuration. The front camera 4, rear camera 5 or side camera 6 receives infrared rays from the infrared light emitting diodes 1A, 2A, 3A (step S1), and when the received infrared rays are blinking, it is determined that another vehicle is traveling. (Step S2) When the received infrared light is continuously lit, it is determined that the other vehicle is stopped (Step S3).

  Next, the vector of the other vehicle is calculated by the optical flow technique (step S4). When the calculated vector is suitable for the host vehicle, the infrared light emitting diodes 1A, 2A, 3A are lit, flashing, the flashing speed when flashing, and the vehicle speed sensor 8 From the vehicle speed information, the relative speed between the host vehicle and the other vehicle is calculated (step S5), and the relative distance between the host vehicle and the other vehicle is calculated (step S6).

  Then, a braking distance capable of avoiding a collision between the own vehicle and the other vehicle is calculated from the calculated relative speed and relative distance between the own vehicle and the other vehicle (step S7), and the calculated braking distance and the own vehicle are calculated. Is compared with the relative distance between the vehicle and the other vehicle (step S8). When the actual relative distance approaches the braking distance, it is determined as a dangerous area and a warning is issued (step S9). Therefore, no warning is issued (step S10). Note that no warning is issued even when the vector calculated in step S4 is not suitable for the vehicle (step S10).

  FIG. 3 shows Example 1, which is an example of a case where the vehicle A is approaching from the rear as indicated by an arrow a to the vehicle B in which the traffic light 11 is stopped due to a red signal. The vehicle periphery monitoring device is mounted on the vehicle A and the vehicle B.

  Since the vehicle B is stopped, the infrared light emitting diode 2A provided in the tail lamp at the rear of the vehicle is continuously lit. The vehicle A approaching from the rear images the infrared rays from the infrared light emitting diode 2A of the vehicle B by the front camera 4 at the front of the vehicle, and sends the imaging data to the arithmetic processing unit 7 (see FIG. 1). Further, the vehicle A sends vehicle speed data detected by the vehicle speed sensor 8 (see FIG. 1) of the own vehicle to the arithmetic processing unit 7.

  The arithmetic processing unit 7 performs image processing on the imaging data from the front camera 4, detects that the infrared light emitting diode 2A is continuously lit, and recognizes that the vehicle B is stopped. The arithmetic processing unit 7 calculates a vector of the vehicle B with respect to the vehicle A by the optical flow technique, and detects that the vector is directed toward the vehicle A.

  Next, the arithmetic processing unit 7 calculates the relative speed between the vehicle A and the vehicle B (that is, the approach speed of the vehicle A with respect to the vehicle B) from the vehicle speed data from the vehicle speed sensor 8, while the relative between the vehicle A and the vehicle B is calculated. Calculate the distance one by one. And the arithmetic processing part 7 calculates the braking distance which can avoid that the vehicle A collides with the vehicle B from the relative speed and relative distance of the vehicle A and the vehicle B, and the calculated braking distance and vehicle A The actual relative distance with the vehicle B is compared, and when the actual relative distance approaches the calculated braking distance, a warning that “the vehicle B has stopped ahead” is issued to the driver of the vehicle A. .

  The driver of the vehicle A who knows the warning can step down the vehicle A safely by stepping on the brake and reliably avoid the rear-end collision of the vehicle A with the vehicle B.

  According to the present embodiment, by adopting the optical flow technique, the vector of the vehicle B with respect to the vehicle A can be calculated, and erroneous recognition of the driver of the vehicle A can be prevented.

  Further, if the vehicle B is stopped, the infrared light emitting diode 2A is continuously lit, so that the vehicle A side can easily recognize the stop of the vehicle B. Moreover, since infrared rays are used, it can be recognized regardless of day or night.

  FIG. 4 shows a second embodiment, which is an example of the case where the vehicle A is approaching from the rear as indicated by an arrow b to the vehicle B where the traffic light 11 is stopped due to a red signal. The vehicle periphery monitoring device is mounted on the vehicle A and the vehicle B.

  Since the vehicle A is running, the infrared light emitting diode 1A provided in the headlight at the front of the vehicle is blinking. In this case, the blinking interval of the infrared light emitting diode 1A is set to change according to the traveling speed of the vehicle A.

  The vehicle B stopped at a red signal images the infrared rays from the infrared light emitting diode 1A of the vehicle A by the rear camera 5 at the rear of the vehicle, and sends the image data to the arithmetic processing unit 7.

  The arithmetic processing unit 7 performs image processing on the imaging data from the rear camera 5, detects that the infrared light emitting diode 1A is blinking, and recognizes that the vehicle A is traveling. The arithmetic processing unit 7 calculates the vector of the vehicle A by the optical flow technique, and detects that the vector is directed toward the vehicle B.

  Next, the arithmetic processing unit 7 calculates the relative speed between the vehicle A and the vehicle B (that is, the approach speed of the vehicle A with respect to the vehicle B) from the vehicle speed data from the vehicle speed sensor 8, while the relative between the vehicle A and the vehicle B is calculated. Calculate the distance one by one. And the arithmetic processing part 7 calculates the braking distance which can avoid that the vehicle A collides with the vehicle B from the relative speed and relative distance of the vehicle A and the vehicle B, and the calculated braking distance and vehicle A The actual relative distance with the vehicle B is compared, and when the actual relative distance approaches the calculated braking distance, a warning that the vehicle A is approaching from behind is given to the driver of the vehicle B. To emit.

  According to this embodiment, since the infrared light emitting diode 1A blinks, the approach of the vehicle A can be easily recognized on the vehicle B side. Moreover, since infrared rays are used, it can be recognized regardless of day or night.

  FIG. 5 shows a third embodiment, which is an example of a case where the vehicle A is approaching from the rear as indicated by an arrow c to the vehicle B that is stopped by turning on a hazard lamp (winker). The vehicle periphery monitoring device is mounted on the vehicle A and the vehicle B.

  Since the vehicle B is stopped, the infrared light emitting diodes 3A provided on the winkers on both sides of the vehicle are continuously lit. The vehicle A approaching from the rear images the infrared rays from the infrared light emitting diode 3A of the vehicle B by the front camera 4 at the front of the vehicle, and sends the imaging data to the arithmetic processing unit 7. In addition, the vehicle A sends vehicle speed data detected by the vehicle speed sensor 8 of the own vehicle to the arithmetic processing unit 7.

  The arithmetic processing unit 7 performs image processing on the imaging data from the front camera 4, detects that the infrared light emitting diode 3A is continuously lit, and recognizes that the vehicle B is stopped. The arithmetic processing unit 7 calculates a vector of the vehicle B with respect to the vehicle A by the optical flow technique, and detects that the vector is directed toward the vehicle A.

  Next, the arithmetic processing unit 7 calculates the relative speed between the vehicle A and the vehicle B (that is, the approach speed of the vehicle A with respect to the vehicle B) from the vehicle speed data from the vehicle speed sensor 8, while the relative between the vehicle A and the vehicle B is calculated. Calculate the distance one by one. And the arithmetic processing part 7 calculates the braking distance which can avoid that the vehicle A collides with the vehicle B from the relative speed and relative distance of the vehicle A and the vehicle B, and the calculated braking distance and vehicle A The actual relative distance with the vehicle B is compared, and when the actual relative distance approaches the calculated braking distance, a warning that “the vehicle B has stopped ahead” is issued to the driver of the vehicle A. .

  The driver of the vehicle A who knows the warning can safely overtake the vehicle B by operating the steering wheel slightly in the right direction.

  According to the present embodiment, by adopting the optical flow technique, the vector of the vehicle B with respect to the vehicle A can be calculated, and erroneous recognition of the driver of the vehicle A can be prevented.

  Further, if the vehicle B is stopped, the infrared light emitting diode 3A is continuously lit, so that the vehicle A side can easily recognize the stop of the vehicle B. Moreover, since infrared rays are used, it can be recognized regardless of day or night.

  FIG. 6 shows a fourth embodiment, in which the vehicle A is approaching an intersection (crossroad) as indicated by an arrow d and the vehicle B is indicated as an arrow e perpendicular to the arrow d. It is an example. In the present embodiment, a reflecting plate 12 that reflects infrared rays is installed at the center of the intersection. The vehicle periphery monitoring device is mounted on the vehicle A and the vehicle B.

  Since the vehicle B is running, the infrared light emitting diode 1A provided in the headlight at the front of the vehicle is blinking. The infrared light emitted from the infrared light emitting diode 1A is reflected by the reflecting plate 12 in a right angle direction (vertical direction in FIG. 6).

  The vehicle A traveling from the direction perpendicular to the vehicle B toward the intersection captures the infrared rays reflected by the reflector 12 with the front camera 4 at the front of the vehicle and sends the image data to the arithmetic processing unit 7. . In addition, the vehicle A sends vehicle speed data detected by the vehicle speed sensor 8 of the own vehicle to the arithmetic processing unit 7.

  The arithmetic processing unit 7 performs image processing on the imaging data from the front camera 4, detects that the infrared light emitting diode 1A is blinking, and recognizes that the vehicle B is traveling. The arithmetic processing unit 7 calculates a vector of the reflector 12 with respect to the vehicle A by the optical flow technique, and detects that the vector is directed toward the vehicle A.

  Next, the arithmetic processing unit 7 calculates the relative speed between the vehicle A and the reflecting plate 12 (that is, the approaching speed of the vehicle A with respect to the reflecting plate 12) from the vehicle speed data from the vehicle speed sensor 8, while the vehicle A and the reflecting plate 12. The relative distance between and is calculated one by one. And the arithmetic processing part 7 calculates the braking distance which can avoid that the vehicle A and the vehicle B meet and collide with the head from the relative speed and relative distance of the vehicle A and the reflecting plate 12, and the calculated braking distance. And the relative distance between the vehicle A and the reflecting plate 12 is compared, and when the actual relative distance approaches the calculated braking distance, the vehicle A driver is told that "the vehicle B is approaching the front intersection" Issue a warning to this effect.

  The driver of the vehicle A who knows the warning can decelerate or stop the vehicle A safely by stepping on the brake, and can reliably avoid the head-on collision between the vehicle A and the vehicle B.

  According to the present embodiment, by adopting the optical flow technique, the vector of the reflector 12 with respect to the vehicle A can be calculated, and erroneous recognition of the driver of the vehicle A can be prevented.

  If the vehicle B is traveling, the infrared light emitting diode 1A blinks in synchronization with the traveling speed, so that the vehicle A side can easily identify the traveling speed of the vehicle B. Moreover, since infrared rays are used, identification can be performed regardless of day or night.

  Furthermore, according to the present embodiment, by providing the reflector 12 at the center of the intersection, the infrared light emitted from the infrared light emitting diode on the vehicle B side is directed to the vehicle A side, or conversely, the infrared light emitting diode on the vehicle A side. Infrared light emitted from the vehicle can be reliably guided to the vehicle B side, and it is possible to reduce head-on collisions at intersections with poor visibility.

  FIG. 7 shows a fifth embodiment, which is an example of a case where the vehicle A is approaching the traffic light 11 whose red signal is lit as indicated by an arrow f. In this embodiment, the traffic light 11 is provided with an infrared light emitting diode 11A that emits infrared light when a red signal is lit. The vehicle A is equipped with the vehicle periphery monitoring device described above.

  Since the traffic light 11 is a red signal, the infrared light emitting diode 11A provided in the traffic light 11 is lit to emit infrared light. The vehicle A approaching the traffic light 11 images the infrared rays from the infrared light emitting diode 11 </ b> A by the front camera 4 at the front of the vehicle, and sends the image data to the arithmetic processing unit 7. In addition, the vehicle A sends vehicle speed data detected by the vehicle speed sensor 8 of the own vehicle to the arithmetic processing unit 7.

  The arithmetic processing unit 7 performs image processing on the imaging data from the front camera 4, detects that the infrared light emitting diode 11A is lit, and recognizes that the traffic light 11 is a red signal. The arithmetic processing unit 7 calculates the vector of the traffic light 11 for the vehicle A by the optical flow technique, and detects that the vector is directed to the vehicle A.

  Next, the arithmetic processing unit 7 calculates the relative speed between the vehicle A and the traffic signal 11 (that is, the approach speed of the vehicle A with respect to the traffic signal 11) from the vehicle speed data from the vehicle speed sensor 8, while the distance between the vehicle A and the traffic signal 11. Is calculated step by step. The arithmetic processing unit 7 then determines the braking distance at which the vehicle A can safely stop in front of the traffic light 11 (that is, an intersection or pedestrian crossing where the traffic signal 11 is provided) from the relative speed and distance of the vehicle A with respect to the traffic light 11. (Avoidable distance) is calculated, and the calculated braking distance is compared with the actual distance between the vehicle A and the traffic light 11, and when the actual distance approaches the calculated braking distance, the driver of the vehicle A is A warning that the traffic light in front is red is issued.

  The driver of the vehicle A who knows the warning depresses or stops the vehicle A safely by stepping on the brake.

  According to the present embodiment, by adopting the optical flow technique, the vector of the traffic light 11 for the vehicle A can be calculated, and erroneous recognition of the driver of the vehicle A can be prevented.

  Further, since the infrared light emitting diode 11A is lit when the traffic light 11 is a red signal, the vehicle A side can easily recognize that the traffic light 11 is a red signal. Moreover, since infrared rays are used, it can be recognized regardless of day or night.

  FIG. 8 shows a sixth embodiment, which is an example in which a vehicle A traveling as indicated by an arrow g and a vehicle B traveling along an opposite lane as indicated by an arrow h pass each other. The vehicle periphery monitoring device is mounted on the vehicle A and the vehicle B.

  Since the vehicle B is running, the infrared light emitting diode 1A provided in the headlight at the front of the vehicle is blinking. When the vehicle A passes by the vehicle B, the front camera 4 at the front of the vehicle images the infrared light emitted from the infrared light emitting diode 1 </ b> A of the vehicle B and sends the image data to the arithmetic processing unit 7.

  The arithmetic processing unit 7 performs image processing on the imaging data from the front camera 4, detects that the infrared light emitting diode 1A is blinking, and recognizes that the vehicle B is traveling. Further, the arithmetic processing unit 7 calculates a vector of the vehicle B with respect to the vehicle A by the optical flow technique, and detects that the vector is not directed toward the vehicle A. At this time, since there is no possibility that the vehicle B collides with the vehicle A, a warning is not given to the driver of the vehicle A.

  When it is detected that the vector of the vehicle B is moving toward the vehicle A, the vehicle B may collide with the vehicle A, so that a warning is given to the driver of the vehicle A.

  According to the present embodiment, by adopting the optical flow technique, the vector of the vehicle B with respect to the vehicle A can be calculated, and erroneous recognition of the driver of the vehicle A can be prevented.

  If the vehicle B is traveling, the infrared light emitting diode 1A blinks in synchronization with the traveling speed, so that the vehicle A side can easily identify the traveling speed of the vehicle B. Moreover, since infrared rays are used, identification can be performed regardless of day or night.

It is a schematic block diagram of the vehicle periphery monitoring apparatus which concerns on this invention. It is a flowchart which shows operation | movement of the vehicle periphery monitoring apparatus of FIG. FIG. 3 is a diagram illustrating Example 1. FIG. 6 is a diagram illustrating Example 2. FIG. 6 is a diagram for explaining a third embodiment. FIG. 10 is a diagram for explaining a fourth embodiment. FIG. 10 is a diagram for explaining a fifth embodiment. FIG. 10 is a diagram illustrating Example 6.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Head ride 1A Infrared light emitting diode 2 Tail lamp 2A Infrared light emitting diode 3 Winker 3A Infrared light emitting diode 4 Front camera (light receiving means)
5 Rear camera (light receiving means)
6 Side camera (light receiving means)
7 Arithmetic processing part (calculation means)
8 Vehicle speed sensor (vehicle speed detection means)
9 Monitor (Warning means)
10 Speaker (Warning means)
11 traffic light 11A infrared light emitting diode

Claims (5)

  An infrared light emitting diode which is embedded in at least one of the front part of the vehicle, the rear part of the vehicle and the side part of the vehicle and emits infrared light; a light receiving means which is provided in the own vehicle and receives infrared light emitted from the infrared light emitting diode of another vehicle; A vehicle speed detecting means for detecting the vehicle speed of the vehicle, a light receiving signal received by the light receiving means and a vehicle speed signal detected by the vehicle speed detecting means are calculated to calculate a relative speed and a relative distance between the own vehicle and the other vehicle, and A calculation means for calculating a braking distance capable of avoiding a collision between the host vehicle and the other vehicle based on the calculation result, and a warning for issuing a warning when the actual relative distance between the host vehicle and the other vehicle approaches the braking distance. And a vehicle periphery monitoring device.   The vehicle periphery monitoring device according to claim 1, wherein the infrared light emitting diode is embedded in at least one of a headlight, a tail lamp, and a blinker.   The infrared light-emitting diode blinks when the vehicle is running and is continuously lit when the vehicle is stopped, while the calculation means determines whether the other vehicle is running or stopped from the lighting state of the infrared light-emitting diode. Item 3. The vehicle periphery monitoring device according to Item 1 or 2.   2. The vehicle periphery monitoring device according to claim 1, wherein the light receiving means is a front camera provided at a front portion of the vehicle, a rear camera provided at a rear portion of the vehicle, and side cameras provided at both sides of the vehicle. .   An infrared light-emitting diode that is embedded in a traffic light and emits infrared light at the time of a red signal; a light-receiving means that is provided in a vehicle and receives infrared light emitted from the infrared light-emitting diode; a vehicle speed detection means that detects the speed of the vehicle; Taking in the light reception signal received by the light receiving means and the vehicle speed signal detected by the vehicle speed detection means to calculate the distance between the traffic light and the vehicle and the approach speed of the vehicle to the traffic light, based on the calculation result, An arithmetic means for calculating the braking distance of the vehicle capable of avoiding an accident at an intersection or a pedestrian crossing provided with the traffic signal, and an actual distance between the vehicle and the traffic signal approached the braking distance calculated by the arithmetic means. A vehicle periphery monitoring device comprising warning means for issuing a warning at times.

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