CN105835771A - Anti-collision pre-warning system and pre-warning method for opening of side doors of car - Google Patents

Abstract

The invention provides an anti-collision early warning system and an early warning method for opening a side door of a car. The early warning system includes a switch control module, which is used to turn on the early warning system when the side door of the car is opened, and to turn off the early warning system when the side door of the car is closed; an ultrasonic detection module for detecting The surrounding environment of the automobile; the data processing module processes the environmental signal detected by the ultrasonic detection module, and judges whether to start the early warning module; the early warning module receives the early warning command sent by the data processing module, and sends an early warning signal; the distance display module , displaying the surrounding environment of the vehicle detected by the ultrasonic detection module; the power supply module supplies power for the switch control module, the ultrasonic detection module, the data processing module and the early warning module. Each door can be equipped with an independent early warning system, which further improves the safety performance through the double warning of the indicator light and the buzzer, which can effectively avoid the door opening collision accident, and the warning accuracy is high and the cost is low.

Description

Automobile side door opening anti-collision warning system and warning method

technical field

The invention belongs to the technical field of automobile safety, and in particular relates to an anti-collision warning system for opening a side door of an automobile.

Background technique

In recent years, the number of automobiles in my country has been increasing, which has brought severe challenges to my country's road traffic safety. Traffic accidents have remained high, and the incidence of side collision accidents is second only to frontal collision accidents, accounting for 10% of the total accident rate. 27%, the losses it caused are also huge. A considerable part of it is caused by the negligence of the driver and passengers when they open the door and get off the car. If the driver or passengers are aware of the risk of accidents before getting off the car, the occurrence of traffic accidents can be greatly reduced rate, to ensure the safety of life and property of the driver and passengers. Therefore, designing an anti-collision warning system for opening the side door of a car can effectively improve the active safety of the car and provide safety guarantee for people's travel.

Contents of the invention

The technical problem to be solved by the present invention is to provide an anti-collision early warning system and early warning method for side door opening of a car, which can effectively avoid collision accidents caused by door opening, and has high early warning accuracy and low cost.

In order to solve the above technical problems, an embodiment of the present invention provides an anti-collision warning system for opening a side door of a car, including:

The switch control module is used to turn on the early warning system when the side door of the car is opened, and to turn off the early warning system when the side door of the car is closed;

The ultrasonic detection module is connected with the switch control module and is used to detect the surrounding environment of the automobile;

A data processing module, connected to the ultrasonic detection module, processes the environmental signal detected by the ultrasonic detection module, and determines whether to start the early warning module;

The early warning module is connected with the data processing module, receives the early warning instruction sent by the data processing module, and sends an early warning signal;

The distance display module is connected with the ultrasonic detection module to display the surrounding environment of the vehicle detected by the ultrasonic detection module;

The power supply module supplies power to the switch control module, the ultrasonic detection module, the data processing module and the early warning module.

Wherein, the ultrasonic detection module includes a lateral ultrasonic radar and a rear ultrasonic radar;

The surrounding environment of the car detected by the ultrasonic detection module includes the environment perpendicular to the side door of the car detected by the lateral ultrasonic radar, and the extended area environment formed by the side door of the car detected by the rear ultrasonic radar and the vehicle body;

The distance display module displays the distance of the vehicle side from the obstacle and the distance of the rear of the vehicle from the obstacle.

Wherein, after the switch control module turns on the early warning system After the time delay, the ultrasonic detection module starts, the The time is the opening angle of the side door of the car The time required for the 30° ≤ ≤35°, 0.1s≤ ≤0.2s.

Preferably, the distance display module is a liquid crystal display. The early warning module consists of an indicator light and a buzzer. The switch control module is a pressure sensor. The data processing module is a single-chip microcomputer.

Wherein, described warning system is all installed on the left front side door, left rear side door, right front side door and right rear side door of automobile.

The present invention also provides a kind of above-mentioned anti-collision warning method for opening the side door of the automobile, comprising the following steps:

(1) When the side door of the car is opened, the switch control module turns on the early warning system. After the time delay of , and the car side door is opened at an angle of θ, start the ultrasonic detection module;

(2) The lateral ultrasonic radar in the ultrasonic detection module detects the environment perpendicular to the side door of the car, and the rear ultrasonic radar detects the angle extension area formed by the side door of the car and the body, and detects it every T time (T is set to 0.5s). Pass the real-time data to the distance display module and data processing module for the surrounding environment of the car;

(3) When the distance S1 from the side of the car to the obstacle detected by the side ultrasonic radar is less than the lateral safety distance S3 set in the data processing module, or the distance S2 from the rear of the car to the obstacle detected by the rear ultrasonic radar is less than When the rear safety distance S4 is set in the data processing module, the data processing module sends an instruction to the early warning module, and controls the early warning module to send an early warning signal.

Wherein, in the step (3), 30cm≤S3≤35cm, 120cm≤S4≤140cm, the warning module includes an indicator light and a buzzer, when S1≤S3, or S2≤S4, the indicator light flashes and the buzzer and the smaller S1 or S2 is, the more frequently the indicator flashes and the louder the buzzer volume is.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above scheme, each car door can be equipped with an independent early warning system, which further improves the safety performance through the double warning of the indicator light and the buzzer, which can effectively avoid collision accidents when the door is opened, and the warning accuracy is high and the cost is low.

Description of drawings

Fig. 1 is a structural block diagram of Embodiment 1 of the present invention;

Fig. 2 is a flow chart of the early warning method in the first embodiment.

Explanation of reference signs:

1. Switch control module; 2. Ultrasonic detection module; 3. Data processing module; 4. Early warning module; 5. Distance display module; 6. Power supply module.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

As shown in Figure 1, a kind of anti-collision warning system for opening the side door of a car, one set can be respectively installed on the left front side door, the left rear side door, the right front side door and the right rear side door of the car.

The early warning system includes:

Switch control module 1, which can be a pressure sensor, is used to turn on the early warning system when the side door of the car is opened, and turn off the early warning system when the side door of the car is closed;

Ultrasonic detection module 2, is connected with described switch control module 1, after described switch control module 1 turns on early warning system After the time delay, the ultrasonic detection module starts, the time The opening angle of the side door of the car the time required. The ultrasonic detection module 2 scans the surrounding environment of the car every 0.5s, and transmits real-time data to the distance display module 5 and the data processing module 3;

Wherein, the ultrasonic detection module 2 is an HC-SR04 ultrasonic module, including a side ultrasonic radar and a rear ultrasonic radar; the surrounding environment of the automobile detected by the ultrasonic detection module 2 includes the environment perpendicular to the side door of the automobile detected by the lateral ultrasonic radar, The angle extended area environment formed by the side door and the body of the car detected by the rear ultrasonic radar.

The data processing module 3 is a single-chip microcomputer, which is connected with the ultrasonic detection module 2, processes the environmental signal detected by the ultrasonic detection module 2, and judges whether to start the early warning module;

Early warning module 4, is connected with described data processing module 3, is made up of indicator light and buzzer, receives the early warning command that described data processing module 3 sends, sends early warning signal;

The distance display module 5 selects a liquid crystal display and is connected with the ultrasonic detection module 2 to display the surrounding environment of the vehicle detected by the ultrasonic detection module, including the distance of the vehicle side from the obstacle and the distance of the rear of the vehicle from the obstacle.

The power supply module 6 supplies power 4 for the switch control module 1 , the ultrasonic detection module 2 , the data processing module 3 and the early warning module.

The present invention also provides a kind of early warning process as shown in Fig. 2 the early warning method of opening the anti-collision of the automobile side door, comprising the following steps:

(1) When the side door of the car is opened, the switch control module turns on the early warning system. After the time delay and the opening angle of the side door of the car, start the ultrasonic detection module, 30°≤ ≤35°, 0.1s≤ ≤0.2s;

(2) The lateral ultrasonic radar in the ultrasonic detection module detects the environment perpendicular to the side door of the car, and the rear ultrasonic radar detects the extended area environment formed by the angle between the side door and the body of the car, detects the surrounding environment of the car every 0.5s, and converts the real-time data Pass to distance display module and data processing module;

(3) When the distance S1 from the side of the car to the obstacle detected by the side ultrasonic radar is less than the lateral safety distance S3 set in the data processing module, or the distance S2 from the rear of the car to the obstacle detected by the rear ultrasonic radar is less than When the rear safety distance S4 is set in the data processing module, the data processing module sends an instruction to the early warning module, and controls the early warning module to send an early warning signal.

Wherein, in the step (3), 30cm≤S3≤35cm, 120cm≤S4≤140cm, the warning module includes an indicator light and a buzzer, when S1≤S3, or S2≤S4, the indicator light flashes and the buzzer and the smaller S1 or S2 is, the more frequently the indicator flashes and the louder the buzzer volume is.

The present invention uses the pressure sensor as the switch control source, the ultrasonic radar as the distance measuring carrier, the single chip microcomputer comprehensively processes the information, the liquid crystal displays the current distance, the double warning through the indicator light and the buzzer, the structure is simple, and the signal interference when opening the door can be effectively solved Problems and early warning accuracy problems at a lower cost.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (9)

1. A car side door opening anti-collision warning system, is characterized in that, comprising: The switch control module is used to turn on the early warning system when the side door of the car is opened, and to turn off the early warning system when the side door of the car is closed; The ultrasonic detection module is connected with the switch control module and is used to detect the surrounding environment of the automobile; A data processing module, connected to the ultrasonic detection module, processes the environmental signal detected by the ultrasonic detection module, and determines whether to start the early warning module; The early warning module is connected with the data processing module, receives the early warning instruction sent by the data processing module, and sends an early warning signal; The distance display module is connected with the ultrasonic detection module to display the surrounding environment of the vehicle detected by the ultrasonic detection module; The power supply module supplies power to the switch control module, the ultrasonic detection module, the data processing module and the early warning module. 2. The automobile side door opening anti-collision warning system according to claim 1, wherein the ultrasonic detection module comprises a side ultrasonic radar and a rear ultrasonic radar; The surrounding environment of the car detected by the ultrasonic detection module includes the environment perpendicular to the side door of the car detected by the lateral ultrasonic radar, and the extended area environment formed by the side door of the car detected by the rear ultrasonic radar and the vehicle body; The distance display module displays the distance of the vehicle side from the obstacle and the distance of the rear of the vehicle from the obstacle. 3. The automobile side door opening anti-collision warning system according to claim 1 or 2, characterized in that, after the switch control module opens the warning system, After the time delay, the ultrasonic detection module starts, the The time is the opening angle of the side door of the car The time required for the 30° ≤ ≤35°, 0.1s≤ ≤0.2s. 4. The automobile side door opening anti-collision warning system according to claim 1, wherein the distance display module is a liquid crystal display. 5. The automobile side door opening anti-collision warning system according to claim 1, wherein the warning module is composed of an indicator light and a buzzer. 6. The automobile side door opening anti-collision warning system according to claim 1, wherein the switch control module is a pressure sensor, and the data processing module is a single-chip microcomputer. 7. The automobile side door opening anti-collision warning system according to claim 1, wherein the warning system is installed on the left front side door, the left rear side door, the right front side door and the right rear side door of the automobile. 8. An early warning method for opening and anti-collision of the automobile side door as described in any one of claims 1 to 7, characterized in that, comprising the steps: (1) When the side door of the car is opened, the switch control module turns on the early warning system. After the time delay of , and the car side door is opened at an angle of θ, start the ultrasonic detection module; (2) The lateral ultrasonic radar in the ultrasonic detection module detects the environment perpendicular to the side door of the car, and the rear ultrasonic radar detects the extended area environment formed by the angle between the side door and the body of the car, detects the surrounding environment of the car every T time, and converts the real-time data Pass to distance display module and data processing module; (3) When the distance S1 from the side of the car to the obstacle detected by the side ultrasonic radar is less than the lateral safety distance S3 set in the data processing module, or the distance S2 from the rear of the car to the obstacle detected by the rear ultrasonic radar is less than When the rear safety distance S4 is set in the data processing module, the data processing module sends an instruction to the early warning module, and controls the early warning module to send an early warning signal. 9. The anti-collision warning method according to claim 8, characterized in that, in the step (3), the warning module includes an indicator light and a buzzer, S1≤S3, or S2≤S4 When the indicator light flashes and the buzzer sounds, and the smaller S1 or S2 is, the more frequent the indicator light flashes and the louder the buzzer volume is.