远程无线传感网络的设计

AbstractThis article mainly discusses wireless data acquisition analysis system,itmainly uses to the aspect of exterminating motorcycle.This system has thecharacteristic such as low power loss,the strong antijamming ability,largecapacity,real-time gathering,the data transmission safe is reliable.In thearticle,it proposes the design mentality.The main engine will reach 255extension telephones through the wireless transmission module (front enddata acquisition installment)and their connect,transmission standardMODBUS (RTU)visits the order to control each extension telephone (front enddata acquisition installment)to work.And it carries on operation and onanalysis,computation to the gathering data,draws up each gathering historydiagram of curves.The extension telephone (front end data acquisitioninstallment)mainly completes the response main engine order,completes thecorresponding function,for example:data acquisition,feedback sampling dataand so on.The main engine and the extension telephone exchange ofinformation by the radio frequency wireless way realization,the data wirelesstransmission follows ModBus(RTU)the communication agreement.Using thehalf-duplex the work way,the frequency work in the ISM frequency band,doesnot need to apply.In the system each extension telephone may gather 4 waysaccording to,and may the real-time monitoring extension telephone supplyvoltage.This article mainly using the ARM7 chip(LPC2132),transported putsLM358,differential amplifier IN1117,chip design and so on wireless receivingand dispatching module NRF905 has manufactured the wireless dataacquisition electric circuit.With ARM/The C language has completed theoverall system software design and the debugging.Finally it also describesthis system control method and the general control flow,the system debuggingprocess and the result.Keywords:Wireless Transmission Data Collection ModBus RF2