Hengaode300Principle and daily maintenance of intrinsic safety laser rangefinder for mining

principle

1.The principle of using infrared or laser ranging

The principle of distance measurement can be basically summarized as measuring the time required for light to travel back and forth to the target, and then passing through the speed of lightc =299792458m/sAnd atmospheric refractive indexnCalculate the distanceDDue to the difficulty of directly measuring time, it is usually necessary to determine the phase of continuous waves, which is called a phase-shifting rangefinder. Of course, there are also pulse rangefinders.

It should be noted that phase measurement does not measure the phase of infrared or laser, but rather the phase of the signal modulated on the infrared or laser. There is a handheld laser rangefinder in the construction industry used for measuring houses, and its working principle is the same as this.

2.The plane of the object being measured must be perpendicular to the light rays

Usually, precision distance measurement requires the use of a total reflection prism, while the distance measuring instrument used for house measurement directly measures the reflection of smooth walls, mainly because the distance is relatively close and the signal strength reflected back by the light is strong enough. It can be inferred that it must be perpendicular, otherwise the return signal will be too weak to obtain accurate distance.

3.Can measure the plane of an object as diffuse reflection

It is usually possible, but in practical engineering, thin plastic sheets are used as reflective surfaces to solve the problem of severe diffuse reflection.

4.Pulse laser rangefinder entertainment grade product can achieve display accuracy1Meter, measurement accuracy ±1Meter, measurement grade product display accuracy0.1Meter, measurement accuracy ±0.15Rice.

5.The accuracy of phase laser rangefinder can reach1Millimeter error, suitable for various high-precision measurement purposes.

routine maintenance

Attention should be paid when using a laser rangefinder: The laser rangefinder cannot be aimed at the human eye for direct measurement to prevent harm to the human body. Meanwhile, laser rangefinders generally do not have waterproof function, so it is necessary to pay attention to waterproofing. The advantage of the American Leopold laser rangefinder is that it can be waterproof and fog proof, and is equipped with painted branches and leaves of jungle trees.

The laser does not have anti drop function, so the laser rangefinder is easily damaged by dropping the emitter.

Maintenance of laser rangefinder:

① Regularly inspect the appearance of the instrument and promptly remove any dust, dirt, grease, mold, etc. from the surface.

② When cleaning the eyepiece, objective lens, or laser emission window, a soft dry cloth should be used. It is strictly prohibited to scratch with hard objects to avoid damaging the optical performance.

③ This machine is a high-precision instrument that integrates optics, mechanics, and electronics. It should be handled with care during use, and squeezing or falling from a height is strictly prohibited to avoid damaging the instrument.

Precautions

Laser safety warning and usage precautions Laser is a high-intensity light source radiation device, and high-power lasers can be used for cutting and welding metal materials. Therefore, lasers can cause serious harm to the human body, especially the human eye, and special care should be taken when using them.

Internationally, there is a unified classification and safety warning sign for lasers, which are divided into four categories（Class1～Class4）Class I lasers are safe for people, Class II lasers have relatively minor harm to people, and Class III or higher lasers have serious harm to people. Special attention should be paid when using them to avoid direct exposure to human eyes.