JP2007276518A - Vehicle collision alarming device and vehicle collision alarming system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle collision alarming device for quickly alarming to a driver of an own vehicle that another vehicle is approaching to the vehicle where visibility is not good or there is a traffic jam. <P>SOLUTION: This vehicle collision alarming device 100 comprises an ultrasonic transmission device 110 and an ultrasonic receiving device 120. The ultrasonic transmission device 110 has a passage area prediction part 113 predicting a passage area, through which its own vehicle passes within a predetermined time using a vehicle speed and a traveling direction of its own vehicle, an ultrasonic output part 115 transmitting ultrasonic waves in the passage area, and an ultrasonic output control part 114 changing a magnitude of the ultrasonic wave according to the vehicle speed of its own vehicle so that the ultrasonic wave reaches in the passage area. The ultrasonic receiving device 120 has an ultrasonic detection part 121 receiving the ultrasonic wave transmitted from the other vehicle, and a collision alarming part 122 for alarming approach of the other vehicle to the driver of its own vehicle when the ultrasonic wave transmitted from the other vehicle is received. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle collision warning device that is mounted on one vehicle and warns a driver of the vehicle or another vehicle so as to avoid a collision between the vehicle and another vehicle, a wave transmission device mounted on one vehicle, and The present invention relates to a vehicle collision warning system that includes a wave receiving device mounted on the other vehicle and warns the driver of the other vehicle so as to avoid a collision between the one vehicle and the other vehicle.

There is a vehicle collision warning device that detects radio waves and light radiated from the vehicle and reflected by obstacles such as other vehicles, and warns the driver of the vehicle so as to avoid collision with the obstacles. It has been put into practical use. Also, the distance between the host vehicle and the other vehicle is calculated from the light radiated from the host vehicle and reflected by the other vehicle, and the distance is within the warning range determined according to the vehicle speed of the host vehicle. 2. Description of the Related Art A vehicle collision warning device that warns a driver of a host vehicle sometimes to avoid a collision with another vehicle is known (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 4-60482

  However, in the technique described in Patent Document 1, the vehicle collision warning device must perform detection, distance measurement, and collision determination processing for each of a plurality of other vehicles, and looks like an intersection or a curved road. If other vehicles that are subject to detection suddenly appear in places where there is no traffic, or if there are many other vehicles that are subject to detection due to traffic congestion, the warning to the driver of the own vehicle may be delayed. there were.

  Further, in the technology described in Patent Document 1, in order for the driver of the own vehicle to determine the collision based on a warning from the vehicle collision warning device and warn the driver of the other vehicle, The warning could be even slower.

  The present invention solves the above-mentioned conventional problems, and the vehicle or the other vehicle is installed so as to avoid a collision between the vehicle and the other vehicle even in a place where the vehicle is not visible and where traffic is congested. Providing a vehicle collision warning device that can warn the driver quickly, and avoids collision between one vehicle and the other even when the vehicle is unrecognizable or in traffic jams. An object of the present invention is to provide a vehicle collision warning system that can quickly warn the driver of the other vehicle.

  A vehicle collision warning device according to the present invention is a vehicle collision warning device including a wave transmission device and a wave reception device, the wave transmission device including vehicle speed information detection means for detecting the vehicle speed of the host vehicle, and the progress of the host vehicle. Rudder angle information detecting means for detecting the direction, passing area predicting means for predicting a passing area through which the host vehicle passes within a predetermined time using the vehicle speed and traveling direction of the host vehicle, and ultrasonic waves or electromagnetic waves in the passing area. A wave output means for transmitting, and a wave output control means for changing the transmission intensity of the ultrasonic wave or electromagnetic wave according to the vehicle speed of the host vehicle so that the ultrasonic wave or electromagnetic wave reaches the passing area, , A wave detection means for receiving ultrasonic waves or electromagnetic waves transmitted from other vehicles, and a collision warning means for warning the approach of the other vehicles to the driver of the own vehicle when receiving ultrasonic waves or electromagnetic waves transmitted from the other vehicles When It has.

According to this configuration, the approach of the own vehicle can be quickly warned to the driver of the other vehicle, and the approach of the other vehicle can be quickly warned to the driver of the own vehicle, so that a collision between the own vehicle and the other vehicle can be prevented.

  A vehicle collision warning system according to the present invention is a vehicle collision warning system that includes a wave transmission device mounted on one vehicle and a wave reception device mounted on the other vehicle. Vehicle speed information detecting means for detecting the vehicle speed of the vehicle, rudder angle information detecting means for detecting the traveling direction of one vehicle, and passage through which one vehicle passes within a predetermined time using the vehicle speed and traveling direction of the one vehicle A passing area predicting means for predicting an area, a wave output means for transmitting an ultrasonic wave or an electromagnetic wave in the passing area, and an ultrasonic wave or an ultrasonic wave depending on the vehicle speed of one vehicle so that the ultrasonic wave or the electromagnetic wave reaches the passing area. A wave output control means for changing the transmission intensity of the electromagnetic wave, and the wave receiving device includes a wave detection means for receiving an ultrasonic wave or an electromagnetic wave transmitted from one vehicle and an ultrasonic wave transmitted from the one vehicle. Or and a collision warning means for warning the approach of one of the vehicle to the driver of the other vehicle when receiving the electromagnetic wave.

  With this configuration, the approach of one vehicle can be quickly warned to the driver of the other vehicle, so that a collision between one vehicle and the other vehicle can be prevented.

  According to the vehicle collision warning device of the present invention, when another vehicle enters an area where the host vehicle passes within a predetermined time, the collision with the driver of the other vehicle is quickly performed without performing distance measurement or collision determination processing. When the host vehicle enters an area where another vehicle passes within a predetermined time, the driver of the host vehicle can be warned early without performing distance measurement or collision determination processing.

  In addition, according to the vehicle collision warning system of the present invention, when the other vehicle enters an area where one vehicle passes within a predetermined time, the other vehicle does not perform distance measurement or collision determination processing. The driver can be warned early of the collision.

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

  FIG. 1 is a block diagram showing the configuration of the vehicle collision warning device according to the present embodiment.

  The vehicle collision warning device 100 mounted on one vehicle has an ultrasonic transmission device 110 and an ultrasonic reception device 120.

  The ultrasonic transmission device 110 includes a vehicle speed information detection unit 111 that detects a vehicle speed of the host vehicle, a rudder angle information detection unit 112 that detects a traveling direction of the host vehicle, and the host vehicle using the vehicle speed and the traveling direction of the host vehicle. A passing region prediction unit 113 that predicts a region that is expected to pass within 4 seconds, an ultrasonic output control unit 114 that changes the intensity of ultrasonic waves to be transmitted according to the vehicle speed of the host vehicle, and the host vehicle within 4 seconds. An ultrasonic output unit 115 that transmits ultrasonic waves to an area that is expected to pass and transmits no ultrasonic waves to other areas is provided.

  The ultrasonic output unit 115 can freely change the direction in which the ultrasonic wave is transmitted vertically and horizontally in order to transmit the ultrasonic wave to a region where the host vehicle passes within 4 seconds. Since the ultrasonic output unit 115 includes a plurality of devices that transmit ultrasonic waves, the ultrasonic output unit 115 can transmit ultrasonic waves all over the region through which the host vehicle passes within 4 seconds.

Further, the ultrasonic output unit 115 determines that the ultrasonic wave to be transmitted is transmitted from the own vehicle by setting the frequency of the ultrasonic wave to be transmitted to be different from the frequency of the ultrasonic wave transmitted by the other vehicle. The vehicle collision warning device 100 of the own vehicle is made easy to identify. In addition, the ultrasonic output unit 115 intermittently transmits ultrasonic waves and makes the blinking intervals different from the blinking intervals of ultrasonic waves transmitted by other vehicles, so that the ultrasonic waves to be transmitted are automatically transmitted. It is also possible to make it easier for the vehicle collision warning device 100 of the own vehicle to identify that it is transmitted from the vehicle.

  On the other hand, the ultrasonic receiving device 120 alerts the driver of the own vehicle to the approach of the other vehicle immediately when receiving the ultrasonic wave from the other vehicle and the ultrasonic detecting unit 121 that receives the ultrasonic wave from the other vehicle. And a collision warning unit 122. The collision warning unit 122 includes a display, a speaker, and the like. The ultrasonic receiver 120 can also receive ultrasonic waves transmitted from the host vehicle and reflected by other vehicles.

  A determination unit may be provided between the ultrasonic detection unit 121 and the collision warning unit 122, and the subsequent operation of the vehicle collision warning device 100 may be controlled by the determination unit based on the intensity of the received ultrasonic wave. For example, if the intensity of the received ultrasound is strong, it is determined that another vehicle is traveling very close or traveling at high speed, and the host vehicle is forcibly stopped, or the received ultrasound intensity If the vehicle is weak, it may be determined that the other vehicle is traveling far or traveling at a low speed, and the warning to the driver of the host vehicle in the collision warning unit 122 may be sent off.

  As described above, the vehicle collision warning device 100 includes the ultrasonic transmission device 110 and the ultrasonic reception device 120, thereby confirming that another vehicle has entered a region where the own vehicle is expected to pass within 4 seconds from now. Immediately warn the driver of the other vehicle to call attention to the collision, and immediately drive the own vehicle that the other vehicle is entering the area where the other vehicle is expected to pass within 4 seconds from now. You can warn your hands and call attention to the collision.

  The time of 4 seconds is obtained by adding an extra time to the time until the driver can avoid the collision after receiving the warning of the collision. The driver of another vehicle who has received a warning of collision due to reception of the ultrasonic wave, if the vehicle is transmitting ultrasonic waves to an area where the vehicle passes within 4 seconds, no matter what speed the vehicle is traveling at Can avoid collisions in 4 seconds.

  FIG. 2 is a diagram for explaining the operation of the vehicle collision warning device of the present embodiment.

  The vehicle collision warning device 100 is mounted on the vehicle 1 and transmits the ultrasonic wave 10 to an area where the vehicle 1 is expected to pass within 4 seconds from now. Vehicle collision warning devices 200 and 300 similar to the vehicle collision warning device 100 are mounted on the vehicles 2 and 3, respectively, and the ultrasonic waves 20 and 30 are placed in areas where the vehicles 2 and 3 are expected to pass within 4 seconds from now. Is sending.

  Vehicle 1, vehicle 2, and vehicle 3 are close to each other on road 4.

  The vehicle 1 is turning right at the intersection 5 at 10 km / h, and is expected to advance about 11 m within 4 seconds from now. The vehicle collision warning device 100 transmits the ultrasonic wave 10 with an intensity that the reach distance is about 11 m. The vehicle collision warning device 200 mounted on the vehicle 2 entering the area where the vehicle 1 is expected to pass within 4 seconds immediately receives the ultrasonic wave 10 and warns the driver of the vehicle 2 that the vehicle 1 is approaching. is doing. The vehicle collision warning device 300 mounted on the vehicle 3 that is not in the region where the vehicle 1 is expected to pass within 4 seconds does not warn the driver of the vehicle 3.

  The vehicle 2 is traveling straight on the road 4 at a speed of 20 km / h, and is expected to advance approximately 22 m within 4 seconds from now. The vehicle collision warning device 200 transmits the ultrasonic wave 20 with an intensity that the reach distance is about 22 m. The vehicle collision warning device 100 mounted on the vehicle 1 entering the region where the vehicle 2 is expected to pass within 4 seconds immediately receives the ultrasonic wave 20 and warns the driver of the vehicle 1 that the vehicle 2 is approaching. is doing. The vehicle collision warning device 300 mounted on the vehicle 3 that is not in the region where the vehicle 2 is expected to pass within 4 seconds does not warn the driver of the vehicle 3.

  In other words, the vehicle collision warning devices 100 and 200 receive the opponent of the driver of the vehicle 1 and the driver of the vehicle 2 even in a situation where it is difficult to visually recognize the opponent vehicle such as the intersection 5 by the transmitted ultrasonic waves 10 and 20. The approach of the vehicle can be recognized and a collision can be avoided.

  On the other hand, the vehicle 3 is traveling straight on the road 4 at a speed of 30 km / h, and is expected to advance about 33 m within 4 seconds from now. The vehicle collision warning device 300 transmits the ultrasonic wave 30 with an intensity that the reach distance is about 33 m. The vehicle collision alarm device 100 mounted on the vehicle 1 entering the area where the vehicle 3 is expected to pass within 4 seconds immediately receives the ultrasonic wave 30 and warns the driver of the vehicle 1 that the vehicle 3 is approaching. is doing. The vehicle collision warning device 200 mounted on the vehicle 2 that is not in the region where the vehicle 3 is expected to pass within 4 seconds does not warn the driver of the vehicle 2.

  In other words, the vehicle collision warning device 300 can make the driver of the vehicle 1 recognize that the vehicle 3 is approaching by the transmitted ultrasonic wave 30 and can avoid a collision, while receiving an ultrasonic wave from another vehicle. By not warning the driver of the vehicle 3, the driver of the vehicle 3 can recognize that the vehicle 3 has not entered the region where other vehicles pass within 4 seconds.

  In addition, since the vehicle collision warning device 100 according to the present embodiment can receive the ultrasonic wave 10 transmitted by itself and reflected by the other vehicle, the ultrasonic wave 20 transmitted from the vehicle 2 shown in FIG. When receiving the ultrasonic wave 10 transmitted by itself and reflected by the vehicle 2, if the driver of the vehicle 1 is emphasized and a warning of a collision is given, the driver of the vehicle 1 is This can be avoided even more. Similarly, if the vehicle collision warning device 300 shown in FIG. 2 alerts the driver of the vehicle 3 of a collision when receiving the ultrasonic wave 30 transmitted by itself and reflected by the vehicle 1, Even when the ultrasonic wave 10 transmitted from 1 cannot be received, the driver of the vehicle 3 can avoid the collision early.

  In addition, the vehicle collision warning device 100 according to the present embodiment transmits the ultrasonic wave 10 to an area in which the vehicle 1 is expected to pass within 4 seconds from now, but it takes 4 seconds depending on the driver characteristics and traffic conditions. The ultrasonic wave 10 can be transmitted to a region that is expected to pass within a different time, for example, within 7 seconds, so that the warning timing to the drivers of the vehicles 2 and 3 can be optimized.

  In addition, the vehicle collision warning device 100 according to the present embodiment has the ultrasonic wave 10 only in an area where the vehicle 1 is expected to pass within 4 seconds from now even when there are many other vehicles around the vehicle 1 due to traffic congestion. Is transmitted to the vehicle in the same lane as that of the vehicle 1, and only a warning is given to the driver of one other vehicle. The driver of the vehicle 1 also travels behind the same lane as the vehicle 1. Only one other vehicle is warned at best. That is, the vehicle collision warning device 100 can quickly give a necessary warning about the rear-end collision to the driver of the vehicle 1 or the driver of one other vehicle traveling in front of the vehicle 1 even in a traffic jam. No unnecessary warning is given to the vehicle, and no unnecessary warning is given by other vehicles. In order to avoid frequently warning the driver of a vehicle traveling in front of the same lane in the case of a traffic jam, the vehicle collision warning device 100 uses ultrasonic waves 10 while traveling at a predetermined vehicle speed, for example, 10 km / h or less. May not be transmitted.

  Further, the vehicle collision warning device 100 according to the present embodiment does not transmit an ultrasonic wave 10 while the vehicle 1 is stopped, and therefore does not warn the driver of another vehicle. There is no warning from the vehicle.

  The vehicle collision warning device according to the present invention can transmit and receive electromagnetic waves such as microwaves, millimeter waves, infrared rays, and light instead of transmitting and receiving ultrasonic waves, and can ensure the most reliable transmission and reception according to road conditions. You can choose. For example, when infrared rays or light is transmitted / received, a lamp may be used as the output unit and a camera may be used as the detection unit.

  In addition, the vehicle collision warning device of the present invention can also impart directivity to the transmitted ultrasonic wave or electromagnetic wave so that the ultrasonic wave or electromagnetic wave reaches a passing area through which the host vehicle passes within a predetermined time.

  The vehicle collision warning device according to the present invention includes a wave transmission device that transmits ultrasonic waves or electromagnetic waves in one vehicle, and a wave reception device that receives ultrasonic waves or electromagnetic waves in the other vehicle. It can also be used as a vehicle collision warning system for avoiding a collision between the other vehicle and the other vehicle.

  The vehicle collision warning device of the present invention transmits an ultrasonic wave or electromagnetic wave to an area where the own vehicle is expected to pass within a predetermined time, and immediately alerts the driver of another vehicle that has received the ultrasonic wave or electromagnetic wave that the own vehicle is approaching. In addition to prompting attention to the collision, it immediately receives the ultrasonic wave or electromagnetic wave transmitted to the area where the other vehicle is expected to pass within the predetermined time and warns the driver of the own vehicle that the other vehicle is approaching. Can be urged, and collision between vehicles can be reduced. The vehicle collision warning device of the present invention can be used not only for automobiles but also for vehicles such as trains and trains.

The block diagram which shows the structure of the vehicle collision warning device of embodiment of this invention The figure for demonstrating operation | movement of the vehicle collision warning apparatus of embodiment of this invention

Explanation of symbols

1, 2, 3 Vehicle 100, 200, 300 Vehicle collision warning device
DESCRIPTION OF SYMBOLS 110 Ultrasonic transmitter 111 Vehicle speed information detection part 112 Steering angle information detection part 113 Passing area prediction part 114 Ultrasonic output control part 115 Ultrasonic output part 120 Ultrasonic receiver
121 Ultrasonic detection unit 122 Collision warning unit

Claims (2)

A vehicle collision warning device including a wave transmission device and a wave reception device,
The wave transmission device includes:
Vehicle speed information detecting means for detecting the vehicle speed of the host vehicle;
Rudder angle information detecting means for detecting the traveling direction of the host vehicle;
A passing area prediction means for predicting a passing area through which the host vehicle passes within a predetermined time by using the vehicle speed and the traveling direction of the host vehicle;
Wave output means for transmitting ultrasonic waves or electromagnetic waves in the passage region;
Wave output control means for changing the transmission intensity of the ultrasonic wave or the electromagnetic wave according to the vehicle speed of the host vehicle so that the ultrasonic wave or the electromagnetic wave reaches the passing region;
The wave receiver is
Wave detection means for receiving ultrasonic waves or electromagnetic waves transmitted from other vehicles;
A vehicle collision warning device comprising: a collision warning unit that warns the driver of the host vehicle of the approach of the other vehicle when an ultrasonic wave or electromagnetic wave transmitted from the other vehicle is received. A vehicle collision warning system comprising a wave transmitting device mounted on one vehicle and a wave receiving device mounted on the other vehicle,
The wave transmission device includes:
Vehicle speed information detecting means for detecting the vehicle speed of the one vehicle;
Rudder angle information detecting means for detecting the traveling direction of the one vehicle;
A passing area predicting means for predicting a passing area in which the one vehicle passes within a predetermined time using the vehicle speed and the traveling direction of the one vehicle;
Wave output means for transmitting ultrasonic waves or electromagnetic waves in the passage region;
Wave output control means for changing the transmission intensity of the ultrasonic wave or the electromagnetic wave according to the vehicle speed of the one vehicle so that the ultrasonic wave or the electromagnetic wave reaches the passing region;
The wave receiver is
Wave detection means for receiving ultrasonic waves or electromagnetic waves transmitted from the one vehicle;
A vehicle collision warning system comprising: a collision warning unit that warns the driver of the other vehicle of the approach of the one vehicle when receiving an ultrasonic wave or electromagnetic wave transmitted from the one vehicle.

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