Keyless unlocking and locking system for automobile

Abstract

The invention discloses a keyless unlocking and locking system for an automobile, which comprises a remote control sensor, an information control mechanism and a central controller. The remote control sensor and the central controller are connected with the information control mechanism respectively. The information control mechanism comprises four low-frequency antennas which are disposed on a left door handle, a right door handle, the centre of the top of the automobile, and a trunk of the automobile respectively. The remote control sensor uses a three-axis induction antenna and a chip with function of KEELOQ encryption. A wireless scanner is used to obtain a wireless encrypted signal, after calculating and programming of computer password experts, a computer with the greatest hardware and the most efficient program are used to decrypt the key according to the obtained signal, only 0.001% of the key is decrypted after one day, and 200 years are needed to completely decrypt the key. Therefore, the key is safe and reliable, and even if a thief copies the signal, the door cannot be opened.

Description

technical field [0001] The invention belongs to the technical field of automobile electronics, and relates to an automobile door lock device, in particular to an automobile keyless opening and locking system. Background technique [0002] At present, the keyless system is mostly used in B-class and above models. It can realize that when people approach the car with the key, the car will automatically open the door, and when the person takes the key away from the car, the car will automatically lock the door. [0003] The main principle is to rely on two low-frequency antennas in the car (installed inside the door) to send key detection signals (see the attached low-frequency antenna installation diagram) figure 1 ), after the key is detected, a confirmation signal is returned. After receiving the confirmation signal, the car thinks that the key is nearby, and starts to automatically open and lock the door. [0004] The existing technology has instability in key judgment, so...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has instability in key judgment, sometimes misoperation, and the safety and anti-theft are not strong, and there are software loopholes, which can be deciphered by thieves to open the car door. The reason for the instability is that the low-frequency antenna is installed in the car door. Since the door is a steel structure, it can shield the low-frequency wireless signal, making the key receiving signal unstable

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