Enterprise trends
Laser displacement sensor echo analysis method
2021-09-15
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Laser displacement sensor can accurately and non-contact measurement of the position, displacement and other changes of the object to be measured, mainly used in the measurement of geometric quantities such as displacement, thickness, vibration, distance, diameter of the detected object.
Laser displacement sensors use the principle of echo analysis to measure distance to a certain degree of accuracy. The inside of the sensor is composed of a processor unit, an echo processing unit, a laser transmitter, and a laser receiver. The laser displacement sensor transmits one million laser pulses per second to the detection object through the laser transmitter and returns to the receiver. The processor calculates the time required for the laser pulse to meet the detection object and return to the receiver, thereby calculating the distance value , the output value is the average output of thousands of measurement results. It is measured by the so-called pulse time method. The laser echo analysis method is suitable for long-distance detection, but the measurement accuracy is lower than that of the laser triangulation method, and the longest detection distance can reach 250m.
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