CN202243308U - Rear-end collision prevention device for vehicle - Google Patents

Abstract

The utility model relates to the field of safe driving of motor vehicles, and discloses a vehicle rear-end collision prevention device, which is characterized by comprising a singlechip, a front radar, a rear radar, a buzzer and a display screen, wherein the front radar, the rear radar, the buzzer and the display screen are respectively electrically connected with the singlechip; the vehicle front radar is arranged at the front part of the vehicle and used for acquiring the relative distance, the relative speed and the relative angle between the front vehicle and the vehicle; the rear radar is arranged at the rear part of the bicycle and is used for acquiring the relative distance, the relative speed and the relative angle between the rear bicycle and the bicycle; the buzzer is arranged in the cab of the bicycle and used for alarming and prompting the bicycle; the display screen is arranged at the tail of the bicycle and used for alarming and prompting the rear bicycle; the singlechip acquires the relative distance, the relative speed and the relative angle of the front vehicle and the self vehicle in real time and judges whether a self vehicle alarm prompt needs to be sent to the buzzer or not; the relative distance, the relative speed and the relative angle of the rear vehicle and the self vehicle are collected in real time, and whether a rear vehicle alarm prompt needs to be provided for a display screen or not is judged.

Description

Anti-rear collision device for vehicle

technical field

The utility model relates to the field of safe driving of motor vehicles, in particular to a vehicle rear-end collision prevention device. the

Background technique

With the rapid development of my country's economy and the continuous improvement of people's living standards, the number of urban car ownership is increasing, and the number of private cars is also increasing. The resulting traffic congestion is also becoming more and more serious, especially during the rush hour. Traffic jams have become a common phenomenon. In the case of a long-term traffic jam, the vehicle travels very slowly, and the driver must always pay attention to the surrounding vehicles and road conditions, otherwise it is easy to cause traffic accidents such as rear-end collisions or scratches. This will not only increase the weight of traffic jams, but also cause danger to the driver's personal safety. At present, in order to reduce the losses caused by automobile rear-end collision accidents, automobile manufacturers have taken many measures, for example, installing bumpers at the front and rear of automobiles, and providing passive protection methods such as safety belts and airbags for drivers and passengers. the

Contents of the invention

The purpose of the utility model is to provide a vehicle rear-end collision prevention device, which can reduce the occurrence of vehicle rear-end collision accidents by combining early warning and active braking. the

In order to achieve the above object, the utility model adopts the following technical solutions to achieve. the

A vehicle rear-end collision prevention device is characterized in that it comprises a single-chip microcomputer, a front radar connected with the single-chip electromechanical, a rear radar, a buzzer and a display screen;

The front radar is installed at the front of the own vehicle, and is used to collect the relative distance, relative speed and relative angle between the preceding vehicle and the own vehicle;

The rear radar is installed at the rear of the own vehicle, and is used to collect the relative distance, relative speed and relative angle between the rear vehicle and the own vehicle;

The buzzer is installed in the cab of the own car, and is used for the alarm prompt of the own car;

Display screen, installed at the rear of the car, used for rear car alarm prompts;

The single-chip microcomputer collects the relative distance, relative speed and relative angle of the vehicle in front and the own vehicle in real time, and judges whether it is necessary to send an alarm prompt to the buzzer; Whether it is necessary to provide rear vehicle warning prompts to the display screen. the

The further improvement of the utility model is that the main braking pipeline of the braking system of the self-vehicle is connected in parallel with an auxiliary braking pipeline, and a control valve is arranged on the auxiliary braking pipeline, and the control end of the control valve is electrically connected to an output of the single-chip microcomputer. channel; its further improvement is that the control valve is a solenoid valve. the

In the utility model, for the vehicle in front, the radar in front of the vehicle is used to collect the relative distance, relative speed and relative angle of the vehicle in front and the vehicle in front, and the single-chip microcomputer collects the relative distance, relative speed and relative angle of the vehicle in front and the vehicle in real time , to judge whether it is necessary to send an alarm prompt to the buzzer, or to realize active braking through the control valve and auxiliary brake pipeline according to the dangerous situation; for the rear car, use the rear radar to collect real-time Relative distance, relative vehicle speed and relative angle, and judge whether it is necessary to provide rear vehicle alarm prompts to the display screen. The utility model adopts the combination mode of early warning and active braking, which can reduce the occurrence of vehicle rear-end collision accidents. the

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment. the

Fig. 1 is a schematic diagram of the principle of a vehicle rear-end collision prevention device of the present invention. the

Detailed ways

With reference to Fig. 1, it is a kind of vehicle anti-rear-collision device of the present utility model, comprise single-chip microcomputer, the radar in front of the car, the rear radar, buzzer, display screen that are connected with single-chip electromechanical respectively. Among them, the front radar is installed at the front of the car, and its signal line is connected with the first input channel PM1 of the single chip microcomputer, and is used to collect the relative distance, relative speed and relative angle between the front car and the self car; the rear radar is installed on the At the rear of the vehicle, its signal line is connected to the second input channel PM2 of the single-chip microcomputer, which is used to collect the relative distance, relative speed and relative angle between the rear vehicle and the vehicle; the buzzer is installed in the cab of the vehicle, and its signal line It is connected with the first output channel PB1 of the single-chip microcomputer for the alarm prompt of the own vehicle; the display screen is installed at the rear of the vehicle, and its signal line is connected with the second output channel PB2 of the single-chip microcomputer for the alarm prompt of the rear vehicle; The main brake pipeline of the brake system is connected in parallel with an auxiliary brake pipeline, and a control valve is arranged on the auxiliary brake pipeline. The control end of the control valve is electrically connected to the third output channel PB3 of the single-chip microcomputer, and the specific control valve is a solenoid valve. the

In this embodiment, the single-chip microcomputer adopts Freescale S12 single-chip microcomputer. Both the front and rear radars use Delphi ESR millimeter-wave radars, which are respectively installed in the center above the front and rear bumpers of the vehicle. Compared with microwave radar, it has the advantages of small size, light weight, narrow wave velocity, wide bandwidth, and strong anti-interference ability. At the same time, it also has better climate adaptability. the

When in use, the single-chip microcomputer collects the relative distance, relative speed and relative angle of the vehicle in front and the own vehicle in real time, and judges whether it is necessary to send an alarm prompt to the buzzer; collects the relative distance, relative speed and relative angle of the rear vehicle and the own vehicle in real time , to determine whether it is necessary to provide a rear vehicle alarm prompt to the display screen. If the distance between the nearest vehicle in front of the lane and the own vehicle is less than the safety distance of 4m, and the relative speed of the two vehicles is negative, that is, the two vehicles are constantly approaching, the single-chip microcomputer controls the buzzer to sound an alarm to remind the driver of the own vehicle to pay attention When the distance between two vehicles is greater than 4m, the buzzer stops working, and at the same time, the solenoid valve is closed to stop braking. If the distance between the nearest rear vehicle and the own vehicle at the rear of the lane is less than the safety distance of 4m, and the relative speed of the two vehicles is positive, that is, the two vehicles are constantly approaching, the MCU control display will display prompt text to remind the driver of the rear vehicle to pay attention to the vehicle. to avoid rear-end collision; when the distance between two vehicles is greater than 4m, the display will stop working. the

Although the embodiments of the present utility model have been described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative, instructive, and not limiting sexual. Under the enlightenment of this description, those skilled in the art can also make many forms without departing from the protection scope of the claims of the present invention, and these all belong to the protection of the present invention. the

Claims (3)

1. a vehicle anti-rear collision device, is characterized in that, comprises single-chip microcomputer, the radar before the car that is connected with single-chip electromechanical, radar, buzzer and display screen behind the car respectively; The front radar is installed at the front of the own vehicle, and is used to collect the relative distance, relative speed and relative angle between the preceding vehicle and the own vehicle; The rear radar is installed at the rear of the own vehicle, and is used to collect the relative distance, relative speed and relative angle between the rear vehicle and the own vehicle; The buzzer is installed in the cab of the own car, and is used for the alarm prompt of the own car; The display screen is installed at the rear of the car, and is used for the alarm prompt of the rear car; The single-chip microcomputer collects the relative distance, relative speed and relative angle of the vehicle in front and the own vehicle in real time, and judges whether it is necessary to send an alarm prompt to the buzzer; Whether it is necessary to provide rear vehicle warning prompts to the display screen. 2. The vehicle rear-end collision prevention device according to claim 1, characterized in that, the main braking pipeline of the braking system of the vehicle is connected with an auxiliary braking pipeline in parallel, and a control valve is arranged on the auxiliary braking pipeline, and the control valve The control terminal is electrically connected to an output channel of the single-chip microcomputer. 3. The vehicle anti-rear collision device according to claim 2, characterized in that the control valve is a solenoid valve.

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