CN204870868U - Car anticollision and pedestrian protect early warning system based on multisensor - Google Patents

Abstract

A car anti-collision and pedestrian protection early warning system based on multiple sensors, including a laser ranging switch, a laser ranging module, an ultrasonic detection switch, an ultrasonic detection module, a processor and an audible and visual alarm module, the laser ranging switch and The control signal output terminals of the ultrasonic detection switch are all connected to the corresponding control signal input terminals of the processor, and the laser ranging module and the ultrasonic detection module are connected to the processor bidirectionally, and the laser ranging module and the ultrasonic detection module are respectively installed in the front and the The rear is used to detect the distance between the car and the front and rear vehicles and pedestrians, and the alarm signal output end of the processor is connected with the signal input end of the sound and light alarm module. The utility model comprehensively uses laser ranging and ultrasonic ranging to realize effective early warning of vehicles, obstacles or pedestrians in front of and behind the car; uses the sound and light mutual alarm module, so that when the door is in danger, the inside and outside of the car Personnel can be alerted.

Description

Anti-collision and pedestrian protection early warning system based on multi-sensor

technical field

The utility model relates to the automobile industry, in particular to the field of traffic safety and early warning, in particular to an automobile anti-collision and pedestrian protection early warning system based on multi-sensors.

Background technique

At present, with the rapid development of the automobile industry, automobiles are accompanied by more and more traffic accidents while providing many conveniences for social development and people's lives. Due to the fact that the total number of cars in developing countries, which account for the majority of the world's population, is increasing every year, the total number of people who die in car accidents worldwide is also increasing every year. The "peacetime war" of road traffic safety accidents will continue mercilessly go down.

The 2014 Statistical Bulletin on National Economic and Social Development pointed out that the death toll per 10,000 vehicles in road traffic accidents nationwide was 2.22, a 5% drop from the 2.3 deaths per 10,000 vehicles at the end of 2013. The number of traffic accident deaths in 2014 was 34,292.34, an increase of 2,688.04, or 8.5%, over the 31,604.3 deaths in 2013, and an increase of 4,069.84, or 13.46%, compared with the 30,222.5 deaths in 2012. In 2014, there were about 160,000 road traffic accidents involving casualties, and the direct property loss was about 800 million yuan. According to relevant statistical data, automobile rear-end collision approximately accounts for more than 70% in the whole road traffic accident. Among them, when the visibility is low, the driver cannot clearly see the road ahead, causing two vehicles to rear-end, or even a series of rear-end collisions, resulting in very serious accidents. In addition, there are countless accidents caused by opening the door. From March 1 to March 12, 2015, in just 12 days, there were 74 accidents caused by driving doors in Nanjing; There are accidents caused by opening the door every day, with an average of one case per day, and sometimes two or three.

The above data are shocking, so it is very necessary to conduct traffic safety research in our country.

Safety is one of the most basic and important performances of a car. With the development of electronic technology, many high-tech electronic devices are applied to the safety devices of automobiles to improve the safety performance of automobiles. Automobile anti-collision warning and pedestrian protection are the research focus of automobile active safety protection system. At present, this technology belongs to the preliminary development stage in our country, and there is still a big gap with the developed countries of automobile. my country's current market is mainly two products of Beijing Taiyuan anti-collision device and Henan Chaoyue anti-collision device. Compared with foreign automobile anti-collision technology, the level of my country's automobile anti-collision system is still relatively low. The products manufactured by Beijing Taiyuan Automobile Automatic Anti-collision Device Manufacturing Co., Ltd. mainly include three types: front anti-collision series, reverse anti-collision series and front slipping anti-collision series. The far-infrared anti-collision products produced by Chaoyue Automobile Safety Device Co., Ltd. include hosts, probes, brake controllers and liquid crystal displays. When the car encounters an obstacle in front of it and poses a safety threat to the car, it can realize automatic alarm, automatic braking, and automatic deceleration to realize active collision avoidance. Although these products can satisfy the active anti-collision of automobiles, they cannot realize simultaneous early warning to the front and rear of the vehicle at the same time, cannot warn vehicles or pedestrians behind the vehicle, and cannot reduce accidents caused by opening doors.

Contents of the invention

The purpose of this utility model is to address the above problems and propose a multi-sensor-based automobile anti-collision and pedestrian protection early warning system. The utility model realizes the anti-collision and pedestrian protection and early warning functions of the car through multiple sensors. Compared with the millimeter-wave radar, the camera system and other devices on the market, the device has complete functions, high cost performance, convenient use, convenient installation, and accuracy. High, low power consumption, in line with the theme of "harmonious transportation", adapt to the development of China's intelligent transportation.

The technical scheme of the utility model is:

A car anti-collision and pedestrian protection early warning system based on multiple sensors, it includes a laser ranging switch, a laser ranging module, an ultrasonic detection switch, an ultrasonic detection module, a processor and an acousto-optic alarm module, the laser ranging switch The control signal output ends of the ultrasonic detection switch and the corresponding control signal input end of the processor are connected, the laser ranging module and the ultrasonic detection module are connected to the processor in two directions, and the laser ranging module and the ultrasonic detection module are respectively installed in front of the car and the rear are used to detect the distance between the car and the front and rear vehicles and pedestrians, and the alarm signal output end of the processor is connected with the signal input end of the sound and light alarm module.

The laser distance measuring switch of the utility model is one, and is installed in the position that the driver can touch.

There are four ultrasonic detection switches of the utility model, which are respectively installed at the car door switch places.

There are two laser distance measuring modules of the utility model, which are installed on the front of the car, one on each side of the bumper.

The laser ranging module of the utility model adopts KLH-100.

There are two ultrasonic modules of the utility model, which are installed at the rear of the car, one on the left and the other on the rear of the car, and the installation angle can be changed with the vehicle model.

The model of the ultrasonic module of the present utility model is HC-SR04.

The acousto-optic alarm module of the present utility model includes the alarm inside the vehicle and the alarm outside the vehicle. When the ultrasonic detection switch is pressed, the alarm outside the vehicle will start to warn pedestrians; When the distance is less than the safe distance, the in-vehicle alarm will activate to warn the driver; when the ultrasonic detection module detects pedestrians behind the vehicle or the distance between the vehicle and the vehicle is less than the safe distance, the in-vehicle alarm will activate to warn the driver.

The beneficial effects of the utility model:

The device of the utility model comprehensively uses laser distance measuring and ultrasonic distance measuring sensors, reduces false alarm rate and false alarm rate, and makes the function of the device play to the maximum. Both can prevent the generation of rear-end collision accident, also can prevent the generation of driving door accident. In addition, under different weather conditions, the driver can manually turn on or off the laser ranging function to prevent rear-end collision accidents and reduce the waste of electric energy;

The design of the utility model does not need to refit the car body and is not limited by the size of the car model. It can be installed not only on cars and off-road vehicles, but also on passenger cars, trucks and large trucks, and has a wide range of applications.

The acousto-optic mutual alarm module of the utility model includes the use of an alarm inside the vehicle and an alarm outside the vehicle, which not only makes the pedestrians or vehicles behind the vehicle be warned when the personnel in the vehicle open the door, but also can warn the pedestrians or vehicles behind the vehicle when the door is in danger. The personnel in the car give warning to achieve the effect of mutual warning and minimize the occurrence of door opening accidents.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 1, a car anti-collision and pedestrian protection early warning system based on multi-sensors, which includes a laser ranging switch, a laser ranging module, an ultrasonic detection switch, an ultrasonic detection module, a processor (stm32 single-chip microcomputer can be used) and The sound and light alarm module, the control signal output ends of the laser ranging switch and the ultrasonic detection switch are connected to the corresponding control signal input ends of the processor, the laser ranging module and the ultrasonic detection module are bidirectionally connected with the processor, and the laser measuring The distance module and the ultrasonic detection module are installed in the front and rear of the car respectively, and are used to detect the distance between the car and the vehicles and pedestrians in front and behind. The alarm signal output end of the processor is connected with the signal input end of the sound and light alarm module.

The laser distance measuring switch of the utility model is one, and is installed in the position that the driver can touch.

There are four ultrasonic detection switches of the utility model, which are respectively installed at the car door switch places.

The utility model has two laser ranging modules, which are installed on the front of the car, one on each side of the bumper; the laser ranging module adopts KLH-100.

There are two ultrasonic modules of the utility model, which are installed at the rear of the car, one on the left and the right at the rear, and the installation angle can be changed with the vehicle model; the model of the ultrasonic module is HC-SR04.

The acousto-optic alarm module of the present utility model includes the alarm inside the vehicle and the alarm outside the vehicle. When the ultrasonic detection switch is pressed, the alarm outside the vehicle will start to warn pedestrians; When the distance is less than the safe distance, the in-vehicle alarm will activate to warn the driver; when the ultrasonic detection module detects pedestrians behind the vehicle or the distance between the vehicle and the vehicle is less than the safe distance, the in-vehicle alarm will activate to warn the driver.

When implementing it:

This design is mainly aimed at avoiding door opening and rear-end collision accidents, and switching working states under different conditions.

①When the passenger or driver in the car wants to get off the car, the ultrasonic detection switch on the door handle is pressed (the position of the door switch is the same as that of the ultrasonic detection switch), the ultrasonic detection module is turned on, and the external alarms placed on both sides of the rear window Work immediately. In addition, when the ultrasonic detection module detects that there are vehicles or pedestrians within a safe distance behind the vehicle, the alarm in the vehicle will start to work.

②In rainy and foggy weather, the visibility is low and the driver cannot see the road ahead. The laser ranging module can be turned on manually. When the vehicle in front enters the set safe distance range, the alarm in the car will immediately warn the driver.

The parts not involved in the utility model are all the same as the prior art or can be realized by adopting the prior art.

Claims (8)

1. the vehicle anticollision based on multisensor and pedestrian protecting forewarn system, it is characterized in that it comprises laser ranging switch, laser ranging module, ultrasonic testing switch, ultrasonic testing module, treater and acousto-optic alarm module, described laser ranging switch is all connected with the corresponding control signal input end of treater with the control signal mouth of ultrasonic testing switch, laser ranging module and ultrasonic testing module are all bi-directionally connected with treater, laser ranging module and ultrasonic testing module are arranged on front and the rear of automobile respectively, for detecting automobile and front, the distance of front vehicle pedestrian, the alarm signal output ends of treater is connected with the signal input part of sound and light alarm module.

2. the vehicle anticollision based on multisensor according to claim 1 and pedestrian protecting forewarn system, is characterized in that described laser ranging switch is one, is arranged on the position that chaufeur can touch.

3. the vehicle anticollision based on multisensor according to claim 1 and pedestrian protecting forewarn system, is characterized in that described ultrasonic testing switch is four, is arranged on place of automobile door switch respectively.

4. the vehicle anticollision based on multisensor according to claim 1 and pedestrian protecting forewarn system, is characterized in that described laser ranging module is two, is arranged on the headstock part of automobile, bumper/spoiler each side.

5. the vehicle anticollision based on multisensor according to claim 4 and pedestrian protecting forewarn system, is characterized in that described laser ranging module adopts KLH-100.

6. the vehicle anticollision based on multisensor according to claim 1 and pedestrian protecting forewarn system; it is characterized in that described ultrasonic testing module is two; be arranged on the afterbody of automobile, about the tailstock each one, setting angle can change with vehicle and change.

7. the vehicle anticollision based on multisensor according to claim 6 and pedestrian protecting forewarn system, is characterized in that the model of described ultrasonic testing module is HC-SR04.

8. the vehicle anticollision based on multisensor according to claim 1 and pedestrian protecting forewarn system, it is characterized in that described sound and light alarm module comprises annunciator and the outer annunciator of car in car, after ultrasonic testing switch is pressed, the outer annunciator of car can start, warning pedestrian; When laser ranging module detects that front vehicles and this spacing are less than safety distance time, in car, annunciator can start, alerting drivers; When ultrasonic testing module detects that rear view of vehicle pedestrian or vehicle and this spacing are less than safety distance time, in car, annunciator can start, alerting drivers.