Several Key Points to Consider When Purchasing a Laser Rangefinder
1. Measurement plan.
2. Measurement accuracy.
3. Place of use.
The foundation can be divided into the following situations:
a) Distance measurement only needs to be within a few meters or ten meters, and the accuracy requirement is not high. It is recommended to choose "ultrasonic rangefinder" (now basic has been phased out). The measurement effect of whitening ultrasonic rangefinder is greatly affected by the environment, and its stability and directionality are inferior to laser rangefinder, but it is relatively cheap and suitable for indoor measurement.
b) The measurement distance is not long and is mostly used indoors, requiring high accuracy.
Handheld laser rangefinder can be purchased. Whitening - Handheld laser rangefinder is suitable for indoor use, with good measurement accuracy and effectiveness. If users need to conduct exploration in outdoor environments, it is recommended to equip them with professional laser sights and reflectors, and use them in combination to achieve the expected range and effect.
c) The measurement distance is relatively long and is mostly used in the field. Suggestion - Purchase a "telescope laser rangefinder" (i.e. laser rangefinder telescope)
The current situation and opening trend of handheld laser rangefinders.
This is an era of rapid technological development, and people's lives are increasingly dependent on technology. Taking laser rangefinder as an example. In the past, people used methods such as tape measure, disconnection, and measurement to measure distance. Now just press a button on this small laser rangefinder to end. Moreover, laser rangefinders have higher accuracy and smaller size than traditional measurement methods. Lightweight and easy to carry.
Due to its wide application, the opening of laser rangefinders is unstoppable. At present, the laser rangefinders in shopping malls include pulse laser rangefinders and phase laser rangefinders. Although they are all used to measure distance, they have their own benefits. At the same time, the measurement planning accuracy of pulse laser rangefinders is poor, while the measurement planning of phase laser rangefinders is relatively small, but the accuracy is high, reaching millimeter level. The application fields of pulse laser ranging are becoming increasingly widespread, such as terrain measurement, tactical frontier ranging, missile orbit tracking, artificial satellites, and distance measurement from the Earth to the Moon. Pulse laser ranging method is characterized by short duration of laser pulses, relatively concentrated energy, and high instantaneous power. In the presence of cooperative policies, pulse laser ranging can achieve a long ranging range; Assuming that only the tiny reflection signals obtained by using the measured policy for diffuse reflection of pulsed laser can be used for distance measurement. Therefore, pulse laser ranging method is widely used.
Now let me briefly explain the working principle of a pulse laser rangefinder: the laser emitted by the rangefinder is reflected by the object being measured and then received by the rangefinder. The rangefinder records the reciprocating time of the laser, and half of the product of the speed of light and the reciprocating time is the distance between the rangefinder and the object being measured.
The measurement accuracy of pulse laser rangefinder is poor, and the general accuracy can only reach m level. Therefore, in some cases where high accuracy is required, a phase laser rangefinder may be needed for the project. However, due to extensive measurement planning and measurement errors of one or two meters, the accuracy is now very high.
