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An electronic key that transmits a password through an audio channel
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An audio channel and electronic lock technology, applied in the field of electronic password locks, can solve problems such as affecting the working stability of Bluetooth devices, waiting for a certain time, affecting work efficiency, etc., to reduce the risk of malicious cracking, save power, and reduce electromagnetic interference. Effect
Active Publication Date: 2019-04-12
GUANGXI UNIV
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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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Embodiment 1
[0018] 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;
[0019] The left channel of the audio plug is connected to a 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 unlocking and locking execution parts through the controlled power supply circuit;
[0020] 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,
[0021] When unlocking, the audio plug is ...
Embodiment 2
[0034] 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.
[0035] 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 lock opening and closing execution parts through the controlled power supply circuit, and the electronic lock body turns from standby to work.
[0036] The right channel transmits the electrical signal whose wa...
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Abstract
The invention relates to an electronic lock key for transmitting a password via an audio channel. The electronic lock key comprises an electronic key and an electronic lock body, wherein the electronic key is an intelligent terminal; the electronic lock body comprises a power source of the lock body, an audio plug, a controllable power supply circuit, an electronic token, a data comparison module, a single chip microprocessor and a locking and unlocking execution part; a left sound channel of the audio plug is connected with the controllable power supply circuit, and the power source of the lock body is used for supplying power for the data comparison module, the single chip microprocessor and the locking and unlocking execution part through the controllable power supply circuit; a right sound channel of the audio plug is connected with the data comparison module and the electronic token through data lines, and the electronic token is connected with the data comparison module through a data line; in the unlocking process, the audio plug is inserted into an earphone hole of the intelligent terminal. The electronic lock key has the advantages that the unlocking can be realized within short time, the paring process is not needed, the efficiency is high, and the compatibility is strong; the control structure is simple, the control of hardware layer is mainly used, and the risk of malicious crack due to software loophole is decreased.
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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