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Measurement Technology, Precise Measurement


25

2023

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09

Laser Range Finder


A Laser Range Finder (LRF) is a sensor that can measure the distance to an object using laser technology. A laser range finder works by transmitting a laser beam and receiving a reflected laser beam, and calculating the distance from the object to the sensor based on the time difference between transmission and reception.

Laser distance sensors usually consist of a laser, an optical system, a photodiode and a signal processing circuit. The laser is responsible for transmitting the laser beam, the optical system is used to focus the laser beam and control the transmission angle, the photodiode is used to receive the reflected laser beam, and the signal processing circuit is used to calculate the distance.

The laser range sensor has the advantages of high accuracy, high speed and long range. It can measure the distance of an object in a few milliseconds, the measurement accuracy can reach the millimetre level, and the range of distance that can be measured is usually between a few metres and several hundred metres. Therefore, laser ranging sensors are widely used in industrial automation, robot navigation, geographic mapping, vehicle safety and other fields.

In industrial automation, laser ranging sensors can be used for positioning and measuring objects, for example, in robot assembly lines, laser ranging sensors can be used to measure the position and size of objects for automated assembly. In robot navigation, laser range sensors can be used for map construction and obstacle detection to help robots sense and plan paths in real time. In geographic mapping, laser ranging sensors can be used for high-precision terrain measurement and 3D modelling. In vehicle safety, laser ranging sensors can be used for distance measurement and collision warning to improve vehicle safety.

In conclusion, laser ranging sensor is a powerful and widely used sensor. It can accurately and quickly measure the distance of objects using laser technology, with the advantages of high precision, high speed and long ranging range, and plays an important role in industrial automation, robot navigation, geographic mapping, vehicle safety and other fields. With the continuous progress of laser technology and the continuous expansion of the application field, the performance of laser range sensors will be further improved and the application range will be more extensive.

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