Integration Of Smart Sensors

Due to the development of large-scale integrated circuits, sensors and corresponding circuits are integrated on the same chip, and this kind of sensor with certain intelligent functions is called integrated intelligent sensor. The function of integrated intelligent sensor has three advantages: higher signal noise Ratio: The weak signal of the sensor is first amplified by the integrated circuit signal and then transmitted over a long distance, which can greatly improve the signal-to-noise ratio. Improve performance: Since the sensor and the circuit are integrated on the same chip, the zero drift, temperature drift and zero position of the sensor can be automatically calibrated through the self-calibration unit on a regular basis, and appropriate feedback methods can be used to improve the frequency response of the sensor. Signal normalization: The analog signal of the sensor is normalized by a program-controlled amplifier, and then converted into a digital signal through analog to digital. The microprocessor performs digital normalization in several forms of digital transmission, such as serial, parallel, frequency, Phase and pulse, etc.