Classification of Infrared Range Finder-Application of Infrared Range Finder
Classification of infrared rangefinders
Infrared range finders can be divided into two categories, mainly: handheld laser infrared range finders and telescope laser infrared range finders.
Handheld Laser Infrared Rangefinder
The measurement distance is generally within 200 meters, and the accuracy is about 2mm. This is the most widely used laser infrared rangefinder at present. Functionally, in addition to measuring the distance, it can also generally calculate the volume of the measured object.
Telescopic Laser Infrared Range Finder
The measurement distance is generally about 600-3000 meters. This kind of infrared rangefinder has a relatively long measurement distance, but the accuracy is relatively low, and the accuracy is generally about 1 meter. The main application range is long-distance measurement in the field.
The telescope laser infrared range finder is a long-distance laser infrared range finder. It is widely used outdoors. The telescope laser infrared range finder has accurate measurement and fast response speed.
Advantages and disadvantages of infrared range finder
Earlier we introduced the characteristics of infrared range finder, so what are the disadvantages of infrared? There is harm only when there is a comparison. Compared with the ultrasonic rangefinder, let's take a look at the advantages and disadvantages of the infrared rangefinder.
One is the active infrared ranging active infrared ranging active illumination and the use of infrared light reflected by the target to implement ranging. For example, the active infrared night vision technology is a night vision technology through observation, and the corresponding equipment is an active infrared night vision device. Passive infrared night vision technology is an infrared technology that realizes observation by means of infrared radiation emitted by the target itself. It finds the target according to the temperature difference or thermal radiation difference between the target and the background or each part of the target. Its equipment is a thermal imager. Thermal imagers have unique advantages different from other night vision devices, such as being able to work in foggy, rainy, and snowy weather, having a long range of action, being able to identify camouflage and anti-jamming, etc., which have become the focus of the development of foreign night vision equipment, and Will replace the low-light night vision device to a certain extent. But its cost is also very high.
The second is that the infrared ranging speed is fast because the principle of infrared ranging is that one infrared LED emits light, and then another infrared receiving tube measures the intensity of infrared light! When the sun comes, the light intensity will be the largest directly, and then the light intensity will decrease after there are obstacles. The light intensity is directly proportional to the distance indoors, and somewhat inversely proportional to the outdoors, so the program will not run correctly.
Third, the disadvantage of the infrared rangefinder is that the intensity of light returned by different surfaces is different. The data returned by black is much more than that of white, so the intensity of light is not necessarily proportional to the distance. When the material is changed, the corresponding relationship is also Changed.
Infrared Range Finder Application
Infrared rangefinders are widely used in topographical surveys, battlefield surveys, tanks, aircraft, ships and artillery to measure the distance of targets, and to measure the height of clouds, aircraft, missiles and artificial satellites. It is an important technical equipment to improve the accuracy of high tanks, aircraft, ships and artillery. As the price of laser infrared range finders continues to drop, the industry has gradually begun to use laser infrared range finders, which can be widely used in industrial measurement and control, mines, ports and other fields.
