The electronic lock is in the field of security technology prevention. The electronic password lock with anti-theft alarm function replaces the traditional mechanical password lock, which overcomes the shortcomings of the mechanical password lock password and poor security performance, making the password lock technically and in performance. Both have greatly improved one step.
Electronic lock features
Electronic lock, it is also based on 51 series single-chip microcomputer (AT89051), with corresponding hardware circuit, complete password setting, storage, identification and display, drive electromagnetic actuator and detect its drive current value, receive sensor sent alarm Signal, send data and other functions.
The MCU receives the entered code and compares it with the password stored in the EEPROM. If the password is correct, the electromagnetic actuator is unlocked; if the password is incorrect, the operator is allowed to re-enter the password, up to three times; if three times If it is not correct, the MCU will alarm the intelligent monitor through the communication line. The single-chip microcomputer sends the unlocking operation and the driving current value of the electromagnetic actuator as the status information to the intelligent monitor at this time, and also sends the alarm information received from the sensor interface to the intelligent monitor as the basis of the intelligent analysis.
Wireless electronic locks. Non-door lock electronic locks can be mainly used in transportation and transportation, warehousing, fresh milk transport vehicles, cash transport vehicles, refrigerated trucks, pharmaceutical transportation, tobacco transportation and other transportation fields. It is mainly used for transportation vehicle doors, special vehicle manhole covers and warehouse doors to ensure the safety of goods transported or guarded and to prevent theft. The electronic lock adopts a mechanical lock body combined with the Internet of Things related technology, and the lock body has a built-in wireless transceiver module. When the lock body is opened and closed, the wireless transceiver module transmits the open and close lock signals to the monitoring host remotely. If the unlock signal received by the monitoring host appears in the abnormal time period, the signal is judged as the stolen and beaconed signal, and the monitoring host immediately generates an alarm message, so that the relevant personnel can timely deal with it to prevent financial loss.
Classification of electronic locks
According to the input password method, it can be divided into the following categories:
1. Push-button electronic lock: use the keyboard (or combination button) to input the unlock password, which is convenient to operate. Internal control circuits often use an electronic lock ASIC.
2. Dial-type electronic lock: Use the mechanical dial switch to input the unlock code. Many push-button electronic locks can be converted into dial-type electronic locks.
3, electronic key electronic lock: use the electronic key to input (or as) unlock password. The electronic key is an important part of the control circuit. The electronic key can be composed of a component or a unit circuit composed of components, and is formed into a small handheld unit. The connection between the electronic key and the main control circuit can be various forms such as sound, light, and electromagnetic.
4, touch-type electronic lock: use the touch method to enter the unlock password, easy to operate. Compared with the push button switch, the touch switch has a long service life and low cost, so the electronic lock control circuit is optimized.
5. Bio-characteristic electronic lock: The human biometrics such as sound and fingerprint are input as passwords, and the computer performs pattern recognition control to unlock, and the intelligence is quite high.
Editor in charge: Xu Yuehua
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