Interfacing of Sensors and Signal Conditioning
In this chapter, a few signal conditioning methods to interface analog and digital signals to processors, microcontroller, microprocessors etc will be introduced. The readers will get a good idea about different stages required to make an intelligent sensing and measurement system. The process involves passive and/or active devices and use circuits such as filters, current to voltage converters or vice versa and so on. The main purpose of this chapter is to provide some fundamentals of interfacing the signals obtained from different sensors to be available to the digital processor for the necessary computation. The digital signal may be directly connected to a digital input of a processor provided it is within the required voltage range. The analog signals are usually connected to the Analog to Digital converters of the processor.