Some understanding of the characteristics of the sensor

1, range

Measuring range of the sensor: the maximum value and the minimum measured value measured.

For example, when a measurement range of 0 ~ 250kpa pressure transmitter, we actually measured when a pressure of 60kPa, we should choose the range 0 ~ 100kpa, this range is the range used.

 

2, error and accuracy

In engineering, using a module or sensor, we will first discuss its accuracy or error.

For example, using a GPS module, the positioning accuracy must be considered; using some analog output, will consider the accuracy of the ADC and the like.

I understand: in the process of communication, error and accuracy can be equated.

In discussing the precision or error of a sensor, it is discussed relative error or absolute error.

Relative error: (measured value - reference value) / (upper - lower)

Absolute Error: measurement - standard value

GPS accuracy discuss the general discussion is absolute error.

 

3. Resolution

10, for example, a ruler out, minimum scale of 1mm, the resolution of 1mm.

 

3, the sensitivity

dy/dx

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