hotel door lock system I
- Apr 13, 2018 -
Electronic combination lock is a password or to control circuit (access control system), so as to control mechanical switches closed, lock, lock task of electronic products.It's a lot of more phyletic, has simple circuit products, also has a high cost performance products based on the chip.Widely used on electronic combination lock is now chip as the core, through the programming.
Electronic lock in the field of security technology to guard against, with security alarm function of electronic combination lock to replace the traditional mechanical combination lock, overcoming the mechanical combination lock password quantity is little, the shortcomings of poor safety performance, make the combination lock both in technology and step in performance are improved greatly.
Electronic locks, it is also the 51 series microcontroller (AT89051) as the core, the match With the corresponding hardware circuit, to complete the password Settings, storage, recognition and display, drive electromagnetic actuators and detect the drive current value, receive the alarming signal from the sensor to send, send data, and other functions.
MCU receives the type in the code, and comparing with the password storage block in EEPROM, if the password is correct, the electromagnetic actuator driven lock;If the password is not correct, allows operators to enter the password, can enter up to three times.If the three are not correct, the single chip microcomputer through telecommunication lines road intelligent monitor alarm.Single-chip microcomputer will unlock operation and each time the electromagnetic actuator drive current value as a status information sent to the intelligent monitor, at the same time will receive from sensor alarm information is sent to the intelligent monitor interface, as the basis of intelligent analysis.