WANG Li na, FENG Xue li

 

(Electromechanic Engineering College, Hangzhou Polytechnic, Hangzhou 311402, China)

 

 

Abstract: In order to solve the problems of present car alarms, such as inconvenient to use, easy to produce false alarms and high cost, fingerprint recognition technology, the keyboard scanning and LCD displaying circuits, the acoustooptic alarm circuit, the bus interface circuit, the control circuit about opening the door, starting the car and alarming and other parts were studied. The requirements of automobile anti theft function were summarized. One kind of automobile anti theft control system based on microcontroller STM32 ARM Cortex M3 as its kernel and fingerprint recognition technology was given. The design of hardware circuit and software programming were completed. The test was finished that the system control the door to open, the car to start and the alertor to alarm by matching the fingerprint information .The functional test of the system shows that, the system functions of fingerprint start, sound light alarm, password emergency start, fingerprint management, mode setting and so on are realized . The system has the advantages of stable performance, lower cost, as well as stronger practicability, and the great actual application value of the module can stand up in the future practice.

 

Key words: LPC1765; fingerprint identification; vehicle anti theft