Control method for key-free emergency unlocking of car door

Abstract

The invention discloses a control method for key-free emergency unlocking of a car door. According to the control method for key-free emergency unlocking of the car door, a control module obtains a car body vibration signal through a vibrating sensor, a judgment is made by taking the number and time interval of pulses of the vibration signal as the characteristics of an unlocking password, and control over car door lock unlocking is conducted when the unlocking password is the same as a preset password. The control method for key-free emergency unlocking of the car door has the remarkable advantages that due to the fact that the number and time interval of the pulses of the vibration signal generated when the car body is knocked serve as the unlocking password, emergency unlocking of the car door can be achieved conveniently when a car key is locked in a car due to carelessness, and people can go out extremely conveniently; in addition, due to the fact that an activation code, different time intervals and the maximum number of times of mistaken input are set, unlocking of the car door due to misoperation or accidentally knocking of other people can be effectively prevented, and the security of the unlocking password and the safety performance of the car are improved.

Description

technical field [0001] The invention relates to the technical field of automobile safety and control, in particular to a control method for keyless emergency unlocking of automobile doors. Background technique [0002] With the popularity of automobiles, people have put forward higher requirements for automobile safety and convenience. Security and anti-theft, smart entry, keyless start, real-time communication, etc. are the trends in the development of intelligent vehicles. [0003] At present, most of the cars on the market use smart keys to control the doors. When people enter a certain sensing range, they can easily open or close the door locks. It is very convenient to use, but there are some problems as follows: [0004] (1) The battery of the smart key generally has a service life of 2-3 years. When the battery is too low, the smart key may fail, causing the door to not open when the unlock button is pressed; [0005] (2) In some environments with relatively strong ...

AI Technical Summary

Problems solved by technology

[0004] (1) The battery of the smart key generally has a service life of 2-3 years. When the battery is too low, the smart key may fail, causing the door to not open when the unlock button is pressed;

[0005] (2) In some environments with relatively strong electromagnetic interference, where the vehicle is in this environment, electromagnetic waves will interfere with the wireless communication between the smart key and the vehicle, resulting in the smart key not being able to open the door normally;

[0006] (3) The internal circuits of most smart keys have weak impact resistance, and are easily damaged when encountering severe collisions. In addition, the internal circuits of the smart keys will be burned out after entering water, causing the keys to fail;

[0007] (4) If the key is locked in the car by mistake, not having a spare key is a very difficult problem

Images