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A method of controlling opening and closing locks by transmitting passwords through audio channels

An audio channel and password technology, which is applied in the field of electronic combination locks, can solve the problems of affecting the working stability of Bluetooth devices, waiting for a certain time, and affecting work efficiency, so as to reduce the risk of malicious cracking, save power, and reduce electromagnetic interference. Effect

Active Publication Date: 2018-07-27
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the Bluetooth device is in standby, it will send signals to the surroundings to search for the device and be recognized by other devices, which consumes more power, and the Bluetooth device needs to wait for a certain period of time during the pairing process, which affects work efficiency
When there is strong electromagnetic interference in the surrounding environment, it will affect the working stability of the Bluetooth device
There may also be compatibility issues between two Bluetooth devices

Method used

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  • A method of controlling opening and closing locks by transmitting passwords through audio channels
  • A method of controlling opening and closing locks by transmitting passwords through audio channels
  • A method of controlling opening and closing locks by transmitting passwords through audio channels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An electronic key that transmits passwords through an audio channel, including an electronic key and an electronic lock body, the electronic key is an intelligent terminal, and the electronic lock body includes a power supply for the lock body, an audio plug, a controlled power supply circuit, and a dynamic token , data comparison module, single-chip microcomputer and opening and closing execution parts;

[0020] The left channel of the audio plug is connected to the controlled power supply circuit, and the power supply of the lock body supplies power to the data comparison module, the single-chip microcomputer and the opening and closing lock execution parts through the controlled power supply circuit;

[0021] The right channel of the audio plug is connected to the data comparison module and the dynamic port token through the data cable, and the dynamic port token is connected to the data comparison module through the data cable,

[0022] When unlocking, the audio plu...

Embodiment 2

[0035] The unlock password used in the design of this embodiment is a binary number with a length of 32 bits, and the password has a total of 2 32 =4294967296 types, the smart terminal is a mobile phone. The principle of mobile phone sending password is to use audio frequency to output analog digital signal. The headphone jack of a mobile phone usually has four contacts, which are the left channel, the right channel, the microphone and the common cathode. Here three contacts are used for left channel, right channel and common cathode.

[0036] The left channel continuously sends out a 1v high-level signal to trigger the controlled power supply circuit, so that the power supply of the lock body supplies power to the data comparison module, single-chip microcomputer, and opening and closing execution parts through the controlled power supply circuit, and the electronic lock body turns from standby to work.

[0037] The right channel transmits the electrical signal whose wavefo...

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PUM

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Abstract

Provided is a method for controlling unlocking and locking by transmitting a password through an audio channel. The method comprises the steps that an audio plug is inserted into an earphone jack of an intelligent terminal, when an audio file is played, high level signals persistently sent by a left sound channel trigger a controlled power supply circuit, a lock body power supply starts to supply electricity, a right sound channel transmits an electric signal of which the waveform coded according to a binary lock code is a square wave or is close to the square wave into a contrast module and an E-token in an electronic lock body, the E-token inputs a built-in binary lock code to the contrast module, the built-in binary lock code is contrasted with the binary lock code electric signal input by the right sound channel step by step, when the built-in binary lock code and the binary lock code electric signal are identical, a single chip microcomputer controls an unlocking and locking executive component to unlock, and when the built-in binary lock code and the binary lock code electric signal are not identical, unlocking is not conducted. According to the method, unlocking can be achieved within short time, the pairing process does not exist, the efficiency is high, and the compatibility is high. The control structure is simple, and by taking control of hardware view as the main, a risk caused by the fact that software vulnerability is maliciously cracked is reduced.

Description

technical field [0001] The invention relates to an electronic combination lock, in particular to a design in which a lock unlocker can open a designated electronic lock within a specified time after being authorized. Background technique [0002] At present, the common electronic locks on the market use Bluetooth communication technology for password transmission. The unlock password in electronic devices such as mobile phones is transmitted to the controller through the Bluetooth network. The controller controls the lock body by comparing whether the incoming password is the same as the preset password. on. When the Bluetooth device is in standby, it will send signals to the surroundings to search for the device and be recognized by other devices, which consumes a lot of power, and the Bluetooth device needs to wait for a certain period of time during the pairing process, which affects work efficiency. When there is strong electromagnetic interference in the surrounding en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C9/00
CPCG07C9/00309G07C2009/00476
Inventor 贺德强张焕刘旗扬苗剑
Owner GUANGXI UNIV