The static characteristic of sensor is what

Instrument sensor products application field widely in water conservancy and hydropower, railway transportation, intelligent buildings, production control, aerospace, military industry, petrochemical, oil, electric power, ships, machine tools, pipe and other industries have a certain application. Today engineering mainly introduce instrument sensor static characteristic is what? Hope can help users better application products.

the sensor's static characteristic refers to the input signal to static, between the sensor's output and input has relationship to each other. When input and output had nothing to do with the time, so the relationship between them, namely the static characteristic of sensor available does not contain a time variable algebra equation, or by typing the abscissa, the corresponding output as ordinate and draw to describe the characteristic curve.

the sensor's static characteristic:

1, the linearity: refers to the sensor output and input the actual relationship between the curve of the degree of deviating from the fitting line. Defined within the scope of whole range between actual characteristic curve and the fitting line of the ratio of the maximum deviation and the full scale output value.

2, sensitivity, sensitivity is an important index of sensor static characteristics. Defined as the output increment and cause the increment of the ratio of the corresponding input increment. Use S sensitivity.

3, hysteresis: sensors in the input quantity from small to large, Positive trip) And input from big to small, The trip) Change during the period of the input and output characteristic curve overlapping phenomenon not become sluggish. For the same size of the input signal, positive trip output signal of sensor size is not equal, the difference is called retardation value.

4, repeatability, repeatability refers to the amount of sensors in the input in the same direction as the range continuous change, the characteristic curve of the degree of inconsistency.

5, drift, drift of sensor is to point to in under the condition of invariable input, sensor output change over time, this phenomenon is called drift. Causes of drift has two aspects: one is the structural parameters of the sensor itself; The second is the surrounding environment ( Such as temperature, humidity, etc. ) 。

6, resolution: when the sensor input from a non-zero value increase slowly, after more than one increment observable changes in output, the input increment said sensor resolution, namely the minimum input increment.

7, threshold: when the sensor input from zero value began to slowly increase, after reaching a certain value after the observed changes in the output, the input value according to the threshold voltage of the transducer.

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