The Fingerprint Identification Door Lock Control System Design And Implementation Based On ARM Cortex-M3

With the progress of science and technology, the continuous improvement of people’s living standard, also will more and more high to the requirement of security door lock system. Some traditional control technology is no longer meet the social demand for safety door lock, and the emergence of biometric fingerprint recognition technology to compensate for the shortcomings of traditional verification equipment, according to each person’s skin texture, including fingerprint pattern, breakpoint and intersection each are not identical, is the only, the characteristics of life unchanged, fingerprint identification combined with electronic information technology of fingerprint access entrance guard system has high reliability, no copy, simple operation, etc.In the paper, a control system composed of fingerprint module, STM32, door locks driver and7-inch TFT color display is designed, which can achieve finger print identification, fingerprint entry, fingerprint management and other functions also.The hardware framework of the system employs ARM Cortex-M3processor as the core, STM32F107VCT6micro-controller as the master chip, and ATK-7’ TFTLCD module as a color LCD. Moreover, voice module circuit, keyboard circuit and the camera circuit are designed. Voice module provides a message for fingerprint identification, while fingerprint identification chip collects and processes fingerprint data. In addition, a variety of alarm systems are set up to manage emergent situations, such as voltage variation.System tests includes both hardware test and software test, the previous one is mainly for the short-circuit, voltage and clock reset testing, software test includes module driven testing and softwares integration testing.