Method for ensuring safety of four-wheel electric vehicle

Abstract

The invention provides a method for ensuring safety of a four-wheel electric vehicle. The method for ensuring the safety of the four-wheel electric vehicle comprises the following steps that S1, the position of a pedal is detected in real time, a vehicle speed v1 is detected in real time and the real-time accelerated speed of the vehicle is calculated, and a whole stroke of the pedal is sequentially divided into a mechanical braking area, a speed changing area and an electronic braking area from low to high; and S2, a first ultrasonic wave sensor is controlled to send out a section of ultrasonic wave, meanwhile timing is started, the time is t, the first ultrasonic wave sensor stops back wave detecting, and a second ultrasonic wave sensor enters a back wave detecting state. According to the method for ensuring the safety of the four-wheel electric vehicle, front obstacles are detected by depending on the ultrasonic wave sensors, a braking system of the vehicle is reasonably controlled according to the states of the distances between the vehicle and the obstacles, the position of the pedal, the vehicle speed, the accelerated speed and the like, and the safety of the vehicle and a driver is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of four-wheel electric vehicles, in particular to a safety guarantee method for four-wheel electric vehicles. Background technique [0002] The rising number of cars has raised a series of problems. Most cars burn fossil fuels such as gasoline, diesel, and natural gas. The reserves of fossil fuels on the earth are limited, and the huge and increasing number of cars makes the energy crisis increasingly serious. The weight of a traditional car is generally about 1500kg, and the payload is only about 100kg. Most of the energy is wasted on the invalid load, resulting in serious energy waste. In addition, traditional cars are bulky, and the average car covers an area of ​​about 10 square meters. The increase in the number of cars has made the problems of traffic congestion and parking spaces more and more serious. [0003] In recent years, electric vehicles have been welcomed by more and more consumers. The pr...

AI Technical Summary

Problems solved by technology

At present, this kind of four-wheel electric vehicle has been put into use in large quantities, especially in various scenic spots, but tourists who have used this kind of vehicle report that it is difficult to concentrate on driving the vehicle during the tour, and most of the attention The force may be concentrated on the scenic spot, so when there is an obstacle in front, it may not be noticed immediately, and the equidistant obstacle is not noticed until it is very close or has been hit, and it is difficult to react in time, and the single-pedal vehicle adopts The design requires a certain adaptation process for tourists who use this vehicle for the first time. There is no major problem in normal driving, but when such an emergency occurs, it is difficult to make correct operations in a panic. Therefore, in order to Further improve the safety performance of this four-wheel electric vehicle, the present invention has made further improvement

Images