JRT :The Working Principle of Laser Distance Sensor

This is Chengdu JRT Meter Technology.

Today we are going to briefly introduce the working principle of our sensors.

1.Our sensors with millimeter accuracy is Phase laser Distance Sensors.

The emitted laser light is emphasized, and the phase change of the modulated signal is used when the laser is propagated in space. According to the wavelength of the modulated wave, the distance represented by the phase delay is calculated. That is, the indirect method of phase delay measurement is used instead of directly measuring the time required for the round trip of the laser to achieve distance measurement.

2.Our sensors with long range of 400m, 700m, 1,200m is Pulse Laser Distance Sensors.

A pulse laser with a very short duration is emitted by a pulsed laser, and after reaching the target to be measured after the distance to be measured, part of the energy will be reflected back. The reflected pulsed laser is called an echo. The echo returns to the rangefinder and is received by a photoelectric detector. According to the interval between the main wave signal and the echo signal, that is, when the laser pulse travels from the laser to the target to be measured, the distance of the target to be measured can be calculated. 

If you still hesitate what sensors to use in your project, just consult us for the most professional suggestion.

Chengdu JRT Main Ranging Sensors: Industrial Laser Distance Sensor, Laser Distance Meter Sensor, Long Rangefinder Module, TOF High Frequency LiDAR Sensor.