Repeatability And Absolute Accuracy In Laser Distance Sensor

Accuracy of the distance sensor is very important to the project, the following explains the difference between repeatability and absolute accuracy.

Repeatability accuracy refers to: the max deviation of the results obtained by the laser distance sensor repeatedly measuring the same change process.

Absolute accuracy refers to: the max difference between the value of the optical distance sensor and the standard value.

Taking the test of a target beyond 100mm as an example, there are measurement results of two high accuracy distance sensor as an example:

The measurement results of No. 1 sensor are 88, 89, 89, 88;

The measurement result of sensor No. 2 is 97,100,99,102;

The analysis results show that the measurement result of No. 1 fluctuates very little, but it is far away from the standard distance of 100mm;

The measurement results of No. 2 fluctuate more, but the difference from the standard distance of 100mm is very small.

If the No. 1 and No. 2 digital distance sensors are two types of laser distance sensor module, the No. 1 industrial distance sensor has high repeatability but less accuracy; No. 2 has poor repeatability but high accuracy.

Therefore, the two indicators are very different, but there is a certain overlap.

The best oem laser distance sensors are those with good repeatability and high precision, like: 99,100,100,99,101.

Hope it helps you found suitable smart distance sensor, we are available if any question you may have.

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