What are the precautions for the selection of laser rangefinder?

May 22, 2020

The laser rangefinder is known to everyone because of the popularity of handheld rangefinders. Handheld laser rangefinders are easy to operate and inexpensive. They are used in industrial and non-industrial industries. In addition to handheld laser rangefinders, industrial Among them, there is a laser ranging sensor with higher accuracy and more compact size, which is also widely used in large and small corners of the industry because of its convenient ranging feature. However, there are some considerations when choosing a laser ranging sensor.

Advantages and disadvantages of laser sensors and precautions;
In industrial applications, in addition to the laser sensor, there is a sensor with a similar function, that is, an ultrasonic displacement sensor. Although the ultrasonic displacement sensor is cheaper because of the simple manufacturing process, it has a fatal disadvantage, that is, the ultrasonic beam is non-pointed and responsive It takes longer. Ultrasonic signals are sent in a diffuse shape and the larger the range, the larger the area. The signal is transmitted back once it is blocked, so it is very limited in use.
But the laser sensor is just a light spot, whether it is a small hole or an object in the distance, it can be used, and the response time of the laser is very fast, so it can be used for rapid measurement.
However, optical sensors have a fatal flaw, that is, they are afraid of water and ash. Some laser sensors can achieve IP65, but when using water on the surface of the transmitter, the light will be emitted back, which will cause false. Signal, at this point the laser performance is obviously not as good as ultrasound.

Application of laser sensor in industry;

1. The moving distance of some large vehicles or targets; the most accurate motion control in the industry is the servo system, but as we have said before, the servo system has inherent limitations, that is, it cannot be used for long distances, and the inverter plus encoder It can be used for a long distance, but the encoder is not easy to install and easily damaged. At this time, the laser rangefinder embodies value.
Install a reflector on the linearly moving vehicle, fix the laser ranging sensor on the ground, and hit the light spot on the reflector to measure the distance; many heavy industries are so measured.
2. The core of the detection industry; it is also an indispensable measurement method in the detection industry. The laser ranging sensor is the most accurate point-type sensor. It can be used in the mobile phone industry, the automotive industry, and other occasions where accurate product measurement is required. It is seen that in these industries, laser ranging sensors mainly detect the surface, thickness, gaps and wear of products, etc.
application

Selection of laser ranging sensor;
The accuracy of the laser ranging sensor itself has a great relationship with the range. Both the larger the range and the lower the accuracy, and the sensors with high accuracy and large range are very expensive.

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