Design Of Smart Field Communicatior Based On Dsp Technology

Fieldbus control technology is one of hotspot in roboticized inspect. Appearance and application of fieldbus control technology is base on smart instruments. This paper design a applied circuit of HART protocol smart instrument on which mainly discusses and analyze importance and difficulty of HART protocol. It can implement basic function of smart field communicatior.At the present time, one side standards of fieldbus control is being on developed and consummated phase. On the other hand the simulated instruments on the 4~20mA current has far-ranged applicated in the industry and autocontrol. HART protocol is adapt to simulated to digital transtion. This paper choice digital signal processing(DSP) on the control and signal processing. It can complete control in time and be fit for HART protocol. Several parts are listed as below:Firstly, after studying DCS system, the characteristics of the fieldbus control technology (PCS systems) are submitted, which are also advantages over DCS systems.Secondly, the differeance of early DCS system and PCS system is discussed. For the sake of smart communicator's function, we confirm HART protocol.Thirdly, analyze the characters and ructions of this system and the structure of DSP. It take advantages of processing digital in time.We confirm that the mainly controlled part is DSPFinally, for realization and approximation needs, DSP used in the paper is programmed to actualize smart field communicatior on HART protocol...