CN106314276A - Rear car overtaking reminding system based on distance measuring - Google Patents

Abstract

A rear car overtaking reminding system based on distance measuring is mainly composed of a distance measuring system, an overtaking identification system and an overtaking reminding system. The distance measuring system measures the distance between the left adjacent lane and a car, the distance between the right adjacent lane and the car and the distance between a car behind the lane where the car is located and the car; the overtaking identification system judges an overtaking intention of the rear car according to distance change information of the adjacent moments and the safety distance; the overtaking reminding system drives corresponding overtaking indicator lights and can give out voice prompt to remind a driver that the rear car is about to overtake from the left side or the right side according to the overtaking intention. By means of the rear car overtaking reminding system based on distance measuring, it can be guaranteed that the driver perceives approaching of the rear car and the overtaking intention of the rear car, the condition that lane changing is conducted when the rear car overtakes is avoided, and safe driving of the car is guaranteed.

Description

Distance-based vehicle overtaking warning system

technical field

The invention relates to an automobile safety driving device, which ensures that the driver of the automobile can detect the overtaking intention of the incoming vehicle in the vehicle when the vehicle coming from behind approaches and is about to overtake, so as to reduce the occurrence of accidents.

Background technique

With the improvement of people's living standards, cars are constantly entering the family, the number of cars is increasing, and there are more and more cars on urban expressways and highways. On multi-lane roads, road traffic caused by car lane changes Accidents happen from time to time, and many new drivers often cannot notice the overtaking intention of the car behind due to lack of experience. Changing lanes at will can easily lead to road traffic accidents, especially when the car coming from behind enters the blind spot of the rearview mirror. In order to enable the car driver to discover the fast approaching and overtaking intention of the rear car in time, and ensure the safety of himself and other car personnel and property, the present invention proposes a rear car overtaking prompt system based on distance measurement.

Contents of the invention

The present invention is proposed to solve the problem that the driver cannot timely find the rear car that is overtaking when driving. Using the distance measurement-based rear car overtaking prompt system proposed by the present invention can make the driver aware of the approaching and overtaking of the rear car in time. Overtaking intention, control the speed of the vehicle in time and avoid changing lanes, so as to ensure that the vehicles behind can overtake safely, thereby avoiding traffic accidents, especially useful on multi-lane roads.

In order to achieve the above object, the present invention adopts the following technical solutions:

A distance-measuring-based overtaking warning system for vehicles behind the vehicle mainly consists of a distance-measuring system, an overtaking recognition system, and an overtaking warning system.

The ranging system uses a three-way ranging device, which is installed in the middle, left rear and right rear of the car respectively. When the car is moving forward, it can measure the distance of the car behind the left and right lanes and the car behind the vehicle lane. The ranging system can use Ultrasonic or optical distance measuring method to realize the test of the distance between the rear car and the car.

The overtaking recognition system analyzes whether the vehicle behind is approaching the vehicle based on the distance information transmitted by the distance measuring system. The source of the distance information informs the driver whether the vehicle behind will overtake from the left or the right. When the distance measurement information comes from the distance measuring device on the left, it means that the car behind the left lane will overtake from the left; when the distance measurement information comes from the right distance measuring device, it means that the car behind the right lane will overtake from the right. When the distance measurement information comes from the distance measuring device at the left side and the middle position of the tail, it means that the car behind this lane will overtake from the left; when the distance measurement information comes from the distance measuring device at the right side and the middle position of the tail, it means that the car behind this lane Will pass from the right side.

The overtaking warning system outputs the corresponding overtaking instruction information of the rear vehicle according to the judgment result of the overtaking recognition system, and instructs the rear overtaking through the rear overtaking indicator light. or overtaking on the right. The overtaking voice can be customized by the driver to play the voice content. You can choose to play the overtaking voice prompt information provided by the system, or it can be turned off by the driver. Only the overtaking indicator light is used to display the rear overtaking signal.

The interconnection among the various systems in the present invention can be accomplished through wireless means such as bluetooth communication, so as to improve usability.

Compared with the prior art, the present invention has the following advantages:

1. In the prior art, the driver directly learns the overtaking intention of the rear vehicle by observing the rearview mirror, and completely relies on the driver's attention and experience to observe, which is not conducive to safe driving. Some drivers, especially new drivers, are difficult to observe the approaching vehicles from the rear due to poor technology or negligence. At the same time, some drivers ignore the rear vehicles that are overtaking due to the existence of visual blind spots in some rearview mirrors. The system and the two-way distance recognition and judgment recognize the overtaking intention of the vehicle behind, which can ensure that the driver perceives the overtaking prompt of the vehicle behind, which is conducive to safe driving, especially for new drivers who lack experience.

2. In the present invention, the overtaking indicator light can indicate the overtaking intention of the rear vehicle, and the driver can also select the overtaking voice prompt system to broadcast the content of the overtaking prompt information of the rear vehicle, which can increase driving pleasure and facilitate safe driving.

3. The present invention has strong practicability, convenient operation, reasonable cost, and is convenient for use and popularization.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the circuit principle of the present invention.

detailed description

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

Example

The embodiment of the present invention is shown in Fig. 1, and the present invention is made up of ranging system, overtaking recognition system, overtaking prompting system. The distance measuring system includes a three-way distance measuring device, which is installed at the left rear, right rear and directly behind the rear of the car, respectively detecting the distance between the left and right lanes of adjacent cars and the distance between the car behind the lane and the own car. The ranging system is connected with the overtaking recognition system, and the distance information is sent to the overtaking recognition system to identify whether the vehicle coming from behind has overtaking intention.

The overtaking recognition system temporarily stores the input distance information, and calculates the distance change value based on the distance information at the current moment and the distance information at the previous moment, and calculates the time interval between the measured two distance values when the vehicle approaching from the rear. The speed of the car, when it is found that the car from behind continues to approach the car and the distance is less than the safety distance, according to whether the distance measurement information comes from the left or the right side, when the distance measurement information comes from the left distance measurement device, it means that the car behind the left lane It will overtake from the left. When the distance measurement information comes from the distance measurement device on the right, it means that the car behind the right lane will overtake from the right. When the distance measurement information comes from the distance measurement device in the middle of the left and rear, it means The car behind the lane will overtake from the left side. When the ranging information comes from the distance measuring device at the right side and the middle of the tail, it means that the car behind this lane will overtake from the right side. The overtaking recognition system sends left or right overtaking information, which is sent to the overtaking prompt system.

The overtaking recognition system is connected with the overtaking prompt system, and the overtaking prompt system is connected with the overtaking indicator light according to the left or right overtaking indication information output by the overtaking recognition system, and indicates the vehicle behind by driving the corresponding left or right overtaking indicator light About to overtake on the left or right side, the overtaking prompt system is also connected with the volume adjustment circuit, which can be adjusted or closed by the driver. Overtaking on the side or on the right.

Claims (4)

1. A car rear car overtaking prompt system based on distance measurement is characterized in that it is made up of distance measurement system, overtaking recognition system, overtaking prompt system. 2. The automobile rear car overtaking prompting system based on distance measurement according to claim 1, characterized in that the distance measurement system is adopted, and when a car comes from the rear, the distance between the left and right adjacent lanes and the vehicle behind the lane and the workshop can be measured. distance. 3. The vehicle rear vehicle overtaking prompt system based on distance measurement according to claim 1, characterized in that the overtaking recognition system is used to calculate the distance change value according to the distance information of the current moment and the distance information of the previous moment, and according to the measured The time interval between the two distance values is calculated to calculate the speed of the vehicle approaching the vehicle from behind. When the vehicle from the rear is found to be approaching the vehicle continuously and the distance is less than the safe distance, the overtaking recognition system will detect whether the distance measurement information comes from the left or the right. Send left or right overtaking information. 4. The vehicle rear overtaking prompt system based on distance measurement according to claim 1, characterized in that the overtaking prompt system is adopted, and according to the left or right overtaking indication information output by the overtaking recognition system, by driving the corresponding left or right The overtaking indicator light indicates that the vehicle behind is about to overtake on the left or right, and can issue voice prompts according to the needs of the driver.