Design of wireless depot surveillance system
LIU Ming1， ZHAO Wen-min2
（1 .Zhejiang Institute of Mechanical & Electrical Engineering Co.， Ltd.， Hangzhou 310002，China；
2. College of Computer and Information Engineering， Zhejiang Gongshang University， Hangzhou 310018， China）

Abstract： To avoid defects of traditional wire surveillance systems such as complex wiring，vulnerable to lightening strike and high cost of installation and maintaining，a depot surveillance system based on wireless sensor network was proposed. System architecture，hardware design of FFD/RFD nodes and network communication protocol were studied in detail. A lot of RFD nodes were arranged in grain depots to capture real-time parameters，which were sent to a server computer by multi-hop wireless stations to telemonitor depot systems. Actual running results show that the wireless surveillance system takes advantage of easy installation，stable operation and high noise rejection，and it can be widely applied to safe-guide and environment monitoring systems.
Key words： wireless sensor network； FFD/RFD node； CC2430； communication protocol