Brief Telescope Laser Range Finder Application
Application of handheld laser range finder in house survey House survey has always been a concern and bother for the housing management department. It is not only directly facing the people, but also directly related to the economic interests of the people, so the control of the measurement error of the house is particularly important. According to the past habits, use a tape measure or a steel tape to measure the building area and the usable area, although it can also meet the basic requirements. However, there are large errors in the measurement of long-distance, high-level and difficult-to-reach places, and there are shortcomings such as high labor intensity and complicated work. In today's rapid development of high-tech, such primitive and traditional measurement methods have become It obviously does not meet the fast and efficient requirements of today's information society. For this reason, after several months of actual use after the introduction of the handheld laser rangefinder, it is generally believed that the instrument is especially suitable for the measurement of buildings with complex structures, middle and high buildings, and long distances. Easy to use, accurate measurement data (three millimeters accuracy), improved work efficiency (non-contact measurement), completely abandoned the method of measuring houses with a tape (or steel tape), reduced surveying errors, and ensured the accuracy of area measurement. The measurement results make the owners more convinced. Of course, the instrument also has aspects that need to be improved urgently. For example, under strong sunlight, long-distance target objects are difficult to see clearly, and accessories such as telescopes are needed. In addition, it is laborious to calibrate the level bubble for each measurement, and it is better to automatically calibrate. In short, there are still many applications for handheld laser rangefinders.
Classification introduction of laser range finder
According to the distance measuring method, it is divided into phase method range finder and pulse method range finder. The pulse laser range finder emits a beam or a series of short pulse laser beams to the target during operation, and the photoelectric element receives the laser reflected by the target. The timer measures the time from launch to reception of the laser beam, and calculates the distance from the observer to the target.
The phase method laser rangefinder detects the distance by detecting the phase difference between the emitted light and the reflected light when it propagates in space. The laser range finder is light in weight, small in size, easy to operate, fast and accurate, and its error is only one-fifth to several hundredths of other optical range finders.
