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Laser range finder manufacturers tell you about problems with range finders
Now using a laser rangefinder could easily measure distance, don't need you to take circle feet to calculate, we measured the distance is a good helper, henan zhengzhou manufacturer of laser rangefinder remind laser rangefinder various brand can according to your budget and actual use, to determine the laser range finder, domestic price cheap, but the performance stability is poorer than a imports, imports of laser range finder are relatively mature, but the price is much higher than domestic, and after a domestic is complicated. So what problems do we encounter in using laser rangefinder? Zhengzhou Defy laser rangefinder manufacturer listed several common problems.
What is the principle of using infrared ranging or laser ranging?
The ranging principle can be basically reduced to measuring the time required for light to travel to and from the target, and then calculate the distance D through the light speed c =299792458m/s and atmospheric refraction coefficient n.Because it is difficult to measure time directly, the phase of continuous wave is usually measured.Of course, there are impulse rangefinders, typically the WILD di-3000.It should be noted that phase measurement is not to measure the infrared or laser phase, but measure the modulation of the signal phase above the infrared or laser.The construction industry has a hand-held laser rangefinder for measuring houses that works in the same way.
Must the plane of the object be perpendicular to the light ray?
Usually precise ranging needs total reflection prism, and the house measurement of the rangefinder, the direct reflection of the wall to measure, mainly because the distance is relatively close, light reflected back the signal strength is large enough.With this you can know, must be vertical, otherwise the return signal is too weak to get the exact distance.
Is it ok if the measured object plane is diffuse reflection?
It is usually possible to use thin plastic sheets as reflective surfaces in practical projects to solve the serious problem of diffuse reflection.
Ultrasonic ranging and laser ranging differences?
Ultrasonic ranging accuracy is relatively low, now rarely used.The accuracy of laser rangefinder can reach 1 mm, suitable for all kinds of high precision measurement purposes.
What is the development prospect of laser rangefinder in China?
As the world's factory, laser rangefinder industry has a good prospect and potential. Since the 21st century, China's laser market has shown a steady and rapid growth trend.Despite the rapid development of the industry, we should be aware that China's laser industry started late, the foundation is weak, and the gap with the world's major countries is still large. For example, China's laser processing systems are quite different from those made in advanced countries.It accounts for only about 2% of global sales.Mainly reflected in: high-end laser processing system less, uneven;The laser of the main component of the laser rangefinder is not closed;There is a big gap in laser micromachining equipment.
Major problems remain:
There are fewer core technologies: many of the key infrastructure technologies have not been solved, and some technologies have even regressed.At present, most of the core technologies of domestic laser rangefinder are imported, and the competitiveness of the products is insufficient.
The combination of product research and development is not satisfactory: China still leads the world in academic research on laser rangefinders, but the industry is very backward, intellectual property rights and patent results are not well protected, and many advanced laser technologies have not been translated into industrial applications.In addition, academic openness is not enough, and innovation is inefficient due to the fear of technological loss.
Weak innovation ability, poor support ability: the system support ability is not high, the innovation ability is insufficient, mostly is the traditional structure type.At present, most industries are integrated industries of optical machinery and electronic computing, and the combination of domestic laser and other industries is very bad, low degree of intelligence and automation, which increases the difficulty of users.
From a technical management perspective, there is a lack of a good evaluation system: there are no national standards, the evaluation system "equivalence" conversion is improper, not flashy.The existing evaluation system is a kind of self-cycle, which leads to the insufficient quality supervision of laser products and is not conducive to the development of laser industry.