The Research And Development Of Smart Pressure Transmitter Based On WorldFIP Field Bus

This paper gives the introduction for designing processs of smar pressuretransmitter with control function and digitizing communication in WorldFIPfieldbus network protol. The author put forward a method for digitizing measurecapacitor and verified the validity of this method through the experiment. Affected by thechange of the environment temperature,the temperature compensation circuit must be addedto the design of pressure transmitter for reducing measure error. The author also utilized datafusion method in the equalize relation between temperature and pressure. For realizing thefield device communication in WorldFIP fieldbus network protol,the author developedthe communication procedure under RTOS system platform to meet the real-time character ofcommunication of field device and request for dependability.