Precautions For Smart Sensors

The design of a good sensor is the result of experience and technology. It is generally understood that a sensor converts a physical quantity through a circuit into a description of a physical quantity that can be expressed in another intuitive way. For example, it is converted into a higher voltage and current signal that only depends on the measured physical quantity, and then displayed.

Generally, the measured physical quantity is very small, usually with inherent conversion noise as the physical conversion element of the sensor. For example, the signal intensity of the sensor at a magnification of 1 is 0.1~1uV, and the background noise signal at this time also has such a large level that it can even be annihilated. How to extract useful signals as much as possible and reduce noise is the primary problem to be solved in sensor design.