Design of Smart Sensor for Pressure Measurement
Abstract
With the development of computer control system, especially of the system with multi-sensor, the intelligent sensor or smart sensor, as a new research field, is attracting more and more people's attention. Although some achievement in the field has been obtained recently, the results are far from application requirements, even worse in the measurement of pressure area. With the development of a pressure control system, the existing traditional pressure sensor has not met the need, however the smart sensor that has the functions of data collection, information processing, digital communication and self-governing has been imminent demand of the development of productive practice.
After the theory of smart sensors for pressure measurement has been deeply studied, and its overall design of intelligent functions and hardware are also described in detail in this paper. A microprocessor with powerful functions and higher integration is used as the main control unit. Large numbers of analog and digital peripheral circuits have been also integrated inside, so the microprocessor has the powerful ability of data processing. All components of the sensor, some of which are necessary for the multiple and intelligent functions, are selected ones with low cost and small package. All circuits are designed in a piece of PCB and the PCB is installed with the pressure detector together. The smart sensor then obtains the advantages of small dimension, low cost and higher anti-disturbance ability.
