Intelligent electric control device for electric door lock based on RFID and working method thereof

Abstract

The invention discloses an intelligent electric control device for an electric door lock based on RFID and a working method thereof. The device comprises an RFID remote controller, an RFID decoder, a logical judgment circuit, an electric lock switch control circuit, a silence control circuit, an electric lock state feedback detection circuit, a buzzer warning circuit and a storage battery state detection circuit. According to the invention, the device is kept in a normally closed lock state when no operation is executed after electrifying, so that the locking state of a vehicle door can be kept after the power supply of the device recovers the normal power supply under the condition of accident outage or unstable instantaneous voltage. The logical judgment circuit, the electric lock state feedback detection circuit and the electric lock switch control circuit of the device are all arranged as double-loop redundant protecting circuits, and the damage to one circuit can not result in control failure. The device disclosed by the invention is suitable for an economical RFID intelligent electric control device adopted by the railway industry; the intelligent electric control device can be used together with a common electric door lock; and an RFID radio-frequency signal is not interfered while the safety and reliability are ultrahigh.

Description

technical field [0001] The invention relates to an electric door lock, in particular to an electric control device for an electric door lock used in the railway industry to encrypt and remotely control the door of a moving freight car. Background technique [0002] At present, the remote control door devices that are widely used in the railway industry use fixed codes to transmit RFID radio frequency signals, and the control circuit is implemented by a single-chip microcomputer without redundant protection functions. This common remote control method has the following disadvantages: [0003] 1. The RFID radio frequency signal is easily affected by the crystal oscillator circuit of the single-chip microcomputer, and the reliability and stability are poor; [0004] 2. Using fixed code transmission without encryption processing, the signal is easy to be cracked and copied, and the security is extremely low; [0005] 3. Most of the equipment control circuits adopt a single cir...

AI Technical Summary

Problems solved by technology

[0003] 1. The RFID radio frequency signal is easily affected by the crystal oscillator circuit of the single-chip microcomputer, and the reliability and stability are poor;

[0004] 2. Using fixed code transmission without encryption processing, the signal is easy to be cracked and copied, and the security is extremely low;

[0005] 3. Most of the equipment control circuits adopt a single circuit design. Once damaged, the door can only be opened by destroying the door, causing unnecessary trouble and economic loss;

[0006] 4. If intelligent control function is required, the failure rate is high and the equipment price is relatively expensive, so it is not suitable for mass use

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