Wireless code hopping system, device and method for remote control door lock

Abstract

The invention discloses a wireless code hopping system and a device for a remote control door lock. The system comprises a remote control key and the remote control door lock, wherein the remote control key comprises a trigger module, a first storage module, an encryption module and a transmitting module; the remote control door lock comprises a decryption module, a second storage module and a control unit; the trigger module is used for transmitting a trigger signal after the push-down of a button is determined; the first storage module is used for storing a hopping code, namely a hopping code updated after the trigger signal is transmitted every time, and a product serial number; the encryption module provided with an encryption program is used for performing raw data encryption on the read product serial number, the read hopping code and button information; the transmitting module is used for transmitting encryption data acquired after the encryption at high frequency; the remote control door lock is used for receiving the encryption data; the decryption module provided with a decryption program is used for decrypting the received encryption data to acquire raw data; and the control unit is used for judging whether to perform the unlocking / locking action of the remote control door lock by matching the raw data with a production serial number and a hopping code which are stored in the second storage module. The system and the device have low cost, high stability and high reliability.

Description

technical field [0001] The invention relates to wireless code hopping technology, in particular to a wireless code hopping system and method for remote control door locks. Background technique [0002] Remote control door locks have been widely used in people's daily life, such as car door locks, anti-theft door locks and so on. However, most of the remote door locks that are initially put into the market such as car door lock systems are based on fixed code technology, that is, the codes sent by the remote control key each time are fixed. Although this is relatively simple and easy to implement technically, it is easy to be intercepted by criminals and resent, thereby cracking and entering this type of door lock system. In order to improve the anti-interception of the door lock system and better ensure the security of the door lock system, a code-hopping technology with higher security has emerged. [0003] However, the existing code-hopping system often requires a specia...

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Problems solved by technology

[0003] However, the existing code-hopping system often requires a special decryption chip. After the encrypted door lock receives the unlocking signal sent by the remote control key, it needs to be decrypted by the decryption chip, and then the corresponding decryption signal is sent to the single-chip microcomputer of the code-hopping system. Not only affects the stability of the system, but also increases the system cost

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