CN107176236A - A kind of prior-warning device driven safely for electric car and method - Google Patents

Abstract

The invention discloses an early warning device and method for safe driving of an electric vehicle, comprising a left and right turn signal switch 1, an ultrasonic distance measuring module 21, an ultrasonic distance measuring module 22, a single-chip microcomputer control system 3, an LED light flashing early warning module 4, and a voice The early warning module has five parts. The left and right turn signal switch 1 and the ultrasonic ranging modules 21 and 22 are jointly connected to the single-chip control system 3, and the rear end of the single-chip control system 3 is connected to the LED flashing warning module 4 and the voice warning module 5; the ultrasonic ranging modules 21 and 22 have Real-time detection, when the driver of the vehicle is driving straight along the road, when the device detects that there is a vehicle approaching quickly within 20 meters behind the car, only the LED light flashes and the warning module runs, when the driver of the vehicle toggles the left and right turn signal switch 1 At this time, the LED light flashing warning module and the voice warning module are running at the same time, and the double warning is used to effectively avoid traffic accidents and improve the safety of electric vehicle drivers.

Description

An early warning device and method for safe driving of electric vehicles

technical field

The invention relates to the field of safe driving on roads, in particular to an early warning device and method for safe driving of electric vehicles, which are mainly applied to active early warning in safe driving of vehicles on roads.

Background technique

As a new type of transportation, electric tricycles or electric bicycles (hereinafter referred to as "electric vehicles") have gradually become the main transportation for ordinary people to travel conveniently due to their advantages of environmental protection, lightness, convenience, speed, and low price. However, while bringing convenience to people's lives, traffic accidents involving electric vehicles have also occurred frequently. According to statistics, in 2012, 2013 and the first 11 months of 2014, the Beijing No. 2 Intermediate People's Court heard 68, 69 and 52 cases of disputes over damages in traffic accidents involving electric vehicles, respectively, accounting for 20% of motor vehicle traffic accidents. 15%, 13.6% and 15% of liability dispute cases. Accidents mostly involve the elderly and children, who have weak awareness of road safety driving rules, lack of driving experience, and weak judgment ability. Turning immediately after getting off, these are very likely to cause traffic accidents, and bring property and life damage to yourself and others. The traffic accidents caused by electric vehicles have attracted more and more attention from the government and society, and the driving safety of electric vehicles has become the focus of attention in the field of transportation technology. However, there are relatively few early warning patent technologies for electric vehicles, and there are certain limitations. The early warning and alarm systems are not perfect, and the comprehensive early warning effect is not ideal.

Contents of the invention

In order to solve the above-mentioned deficiencies in the existing technical problems, the object of the present invention is to propose an early warning device, which can more comprehensively and effectively avoid potential safety hazards in road driving through double early warning, and is expected to reduce traffic accidents and is used for safe driving of electric vehicles. early warning device.

In order to solve the above-mentioned prior art problems, the technical solution adopted in the present invention is:

An early warning device for safe driving of an electric vehicle consists of a left and right turn signal switch 1, an ultrasonic ranging module 21, an ultrasonic ranging module 22, a single-chip microcomputer control system 3, an LED light flashing early warning module 4, and a voice early warning module 5. The left and right turn signal switch 1 of the electric vehicle is located at the position of the left handle, and the ultrasonic ranging modules 21 and 22 are located at the left and right sides of the rear end of the electric vehicle. The left and right turn signal switches 1 and the ultrasonic ranging modules 21 and 22 are jointly connected to the single-chip control system 3, the rear end of the single-chip microcomputer control system 3 is connected with the LED light flashing warning module 4 and the voice warning module 5. The LED light flickering warning module 4 is installed on the electric car dial. Ultrasonic distance measuring modules 21 and 22 have real-time detection capability. When the vehicle driver is driving straight along the road, and the device detects that there is a vehicle approaching quickly within 20 meters behind the vehicle, only the LED light flashing warning module will run. When the left and right turn signal switch 1 is turned, the LED light flashing warning module and the voice warning module run simultaneously.

The above-mentioned ultrasonic distance measuring modules 21 and 22 use the measurement of the round-trip pulse interval to know the distance. The method of measuring the pulse interval is to fill and count with clock pulses between the start and end points, and measure the distance according to the time gap between emission and reception. method can obtain higher test accuracy. The ultrasonic sensor can detect the vehicles moving within 20 meters behind the vehicle in real time, and transmit the collected data to the single chip microcomputer immediately.

The above-mentioned single-chip microcomputer control system 3 is used to receive and process signals, and perform physical calculations on the relative distance and time interval between the two vehicles detected by the ultrasonic ranging modules 21 and 22, to obtain the relative speed of the rear vehicle relative to the own vehicle, and control the The terminal LED light flashing module and the voice warning module are running.

Advantages of the present invention: the invention is an electric vehicle safe driving early warning device, which can selectively perform early warning according to the real-time status of the electric vehicle. When the vehicle is driving straight, the device only flashes the LED light for early warning, otherwise it performs double early warning with voice prompt and flash , can effectively prevent road safety hazards and protect the personal safety of drivers.

Description of drawings

The device will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural representation of the present invention;

The device includes: a left and right turn signal switch 1, ultrasonic distance measuring modules 21 and 22, a single-chip microcomputer control system 3, an LED light flashing module 4, and a voice warning module 5.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figure 1, a vehicle safety warning device is composed of left and right turn signal switches 1, ultrasonic distance measuring modules 21 and 22, single-chip microcomputer control system 3, LED flashing warning module 4, and voice warning module 5. The ultrasonic ranging modules 21 and 22 possess real-time detectability. When the vehicle keeps running straight ahead, the LED light flashing warning module 4 is in working condition, and the ultrasonic ranging modules 21 and 22 have been detecting whether there is The fast-moving vehicle transmits the detected relative distance and time interval between the two vehicles to the single-chip control system 3, and the single-chip control system 3 calculates the speed of the rear vehicle by a predetermined algorithm through the relative distance and time interval between the two, When it is judged that the speed of the rear vehicle is greater than the speed of the vehicle, the single-chip control system 3 controls the LED light flashing warning module 4 to flash frequently, so as to remind the driver to pay attention to the rear vehicle. When the driver toggles the left and right turn signal switch 1 and wants to turn, the LED light flashing warning module 4 and the voice warning module 5 are in working condition simultaneously, and if the single-chip microcomputer control system 3 judges that the speed of the rear vehicle is greater than the speed of the car , the single-chip microcomputer control system 3 then controls the LED light flashing warning module 4 to flicker frequently, and simultaneously controls the voice warning module 5 early warning, and sends the alarm sound of "no turning" to reach the effect of reminding the driver to pay attention to the rear vehicle.

Claims (1)

1. An early warning device and method for safe driving of an electric vehicle, comprising a left and right turn signal switch 1, an ultrasonic ranging module 21, an ultrasonic ranging module 22, a single-chip microcomputer control system 3, an LED flashing early warning module 4, and a voice early warning module 5. It consists of five parts; the left and right turn signal switch 1 of the electric vehicle is located at the position of the left handle, the ultrasonic ranging modules 21 and 22 are located at the left and right sides of the rear end of the electric vehicle, the left and right turn signal switches 1 and the Ultrasonic ranging modules 21 and 22 are jointly connected to the single-chip control system 3, and the rear end of the single-chip control system 3 is connected in parallel with the LED flashing warning module 4 and the voice warning module 5, and the LED flashing warning Module 4 is installed on the dial of the electric vehicle; the ultrasonic distance measuring modules 21 and 22 possess real-time detectability, and the distance is known by measuring the round-trip pulse interval. The time gap between transmission and reception measures the distance, and the ultrasonic sensor can detect the moving vehicle within 20 meters behind the vehicle in real time, and transmit the collected data to the single-chip microcomputer immediately; when the vehicle driver drives straight along the road, the device detects When there is a vehicle approaching quickly within 20 meters behind the car, only the LED light flashing warning module operates, and when the driver of the vehicle toggles the left and right turn signal switch 1, the LED light flashing warning module and the voice warning module run simultaneously at this time; The single-chip control system 3 is used to receive and process signals, and physically calculates the relative distance and time interval between the two vehicles detected by the ultrasonic distance measuring modules 21 and 22 to obtain the relative speed of the rear vehicle relative to its own vehicle, and control it. The terminal LED light flashing module and the voice warning module are running.