What Causes Sensor Failure?

[McLeo]

The specific causes of sensor failure are as follows: 1. Fixed deviation failure mainly refers to a type of fault where the measured value of the sensor differs from the true value by a constant. The faulty measurement runs parallel to the fault-free measurement. 2. Drift failure is a type of fault where the difference between the sensor's measured value and the true value changes over time. The accuracy decreases, the sensor's measurement capability deteriorates, and the precision lowers. When the accuracy grade drops, the average value of the measurements does not change, but the variance of the measurements does. Relevant information is as follows: 1. A sensor is a device or apparatus that can sense a specified measured component and convert it into a usable signal according to a certain law. The output signal is generally an electrical quantity. It is usually composed of a sensitive element and a conversion element. 2. A sensor can sense the information of the measured object and transform the sensed information into an electrical signal or other required forms of information output according to a certain law, to meet the requirements of information transmission, processing, storage, display, recording, and control.