Mr. Chongjie Ran Profile

Chongjie Ran

at Univ of Electronic Science and Technology of China

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Proceedings Article | 14 November 2007 Paper

Practical and cost-efficient design of fingerprint recognition system based on DSP

Chongjie Ran, Mei Xie

Proceedings Volume 6789, 678921 (2007) https://doi.org/10.1117/12.747855

KEYWORDS: Digital signal processing, Fingerprint recognition, Image processing, Light emitting diodes, Image sensors, Sensors, Human-machine interfaces, Clocks, Field effect transistors, Telecommunications

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In this paper, a practical and cost-efficient fingerprint recognition system model is proposed. It completes the functions of capturing fingerprint image, data transmission and fingerprint recognition. This system consists of six modules: Management Module (including TMS320VC5502 DSP and memories), Fingerprint Sensor Module (used to collect fingerprint image), Output Module (the interface to control electronic lock), Human-Machine Communication Module (seven-segment LED and keyboard), Debugger Interface Module (JTAG), Power Manager and Power Switchover Module. Unlike other fingerprint recognition systems, this system takes TI C5502 as core processor. It is a high-performance, low-power and fixed-point DSP and the whole system power can be supplied by batteries. The whole system can work more than 10000 times with batteries. In addition, a Power Switch Module, which can automatic switch the ways of power supply between wall adapter and batteries, is proposed in this paper. Furthermore, some software optimization makes this system practical. The design not only simplifies system's structure and reduces the cost of hardware, but also decreases the consumption of system power and resources. So, this hardware system can be used in practical applications, such as portable identification device, fingerprint lock etc. This system is mainly designed for fingerprint lock in this paper.

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