Browsing by Author "Liu, Hongli"

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    The Design of an Intelligent Security Access Control System Based on Fingerprint Sensor FPC1011C
    (Scientific Research, 2010-07) Wang, Yan; Liu, Hongli; Feng, Jun
    This paper deals with the design of an intelligent access control system based on the fingerprint sensor FPC-1011C. The design uses the S3C2410 and TMS320VC5510A as the system processor. A fingerprint acquisi-tion module and a wireless alarm module were designed by using the fingerprint sensor FPC1011C and GPRS module SIM100 respectively. The whole system was implemented wireless alarm through messages and GPRS-Internet in the GSM/GPRS web. In order to achieve the simple and high Real-time system, the μC-Linux system migration was also implemented
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    A New Algorithm of Mobile Node Localization Based on RSSI
    (Scientific Research Publishing, 2011-04) Zhang, Jie; Liu, Hongli; Huang, Bowei
    Position mobile node coordinate is a key component to determine the accuracy and efficiency of positioning in wireless sensor networks. Flexible location algorithm admits to adjust the accuracy and time cost of positioning based on the users references. This paper develops a location algorithm named Signal Strengthening Dynamic Value (SSDV) based on the database of RSSI to position the mobile node in terms of the value of beacon nodes RSSI. The proposed algorithm has successfully improved the accuracy of mobile nodes positioning and real-time, and simulation results show high performance in effectiveness of the algorithm.