Design of Password-Lock Based on Microcontroller and Remote Control Technology
Abstract：With the development of the electronics industry, today's intelligent electronic lock technology is constantly updated, in particular the application of SCM in the field are constantly toward high precision and advanced technology development, whether functional and stability are more comprehensive. Radio remote control technology will be combined with cryptographic techniques, to ensure that the existing locks in the system performance based on the development of new remote lock system. Enables users to any location within a certain range can be on the safe open, password security can be improved to overcome the fixed keyboard lock deficiencies. The system is based on the single chip on the development of remote control locks, the hardware design from the remote transmitter and remote control receiver of two subsystems, in order to receive some of the major AT89C52 microcontroller as the core. Use PT2262, PT2272 chip encoding and decoding the signals. In addition, the combination of portability and readability of the C language program to achieve lock, alarm and display. At the same time, the use of EEPROM memory AT24C02 power-down mode makes the system still be able to save the password information. The system is small, low cost, reliable, easy to use and so on.
Keywords: remote control technology password-lock code decode
single chip microcomputer
