Precautions for handheld laser rangefinder measurement in buildings
Everyone believes that the measurement of houses has always been a concern and effort of the housing management department. The area map of the house survey is directly used as an attachment to the property certificate and has legal effect. It is not only directly facing the people, but also directly related to their economic interests, so controlling the measurement error of houses is particularly important. According to past habits, using a tape measure or steel tape to measure the building area can also meet basic requirements. However, there are significant errors in long-distance measurement, measuring floor height, and difficult to reach the ground measurement, and there are also shortcomings such as high labor intensity and complicated work, In today's rapidly developing high-tech world, such primitive and traditional measurement methods are clearly not in line with the rapid and efficient requirements of today's information society. For this reason, after introducing two handheld laser rangefinders from Jintai Science Instrument, after several months of practical use, it is generally believed that this instrument is particularly suitable for measuring complex building structures, mid to high-rise buildings, and long-distance buildings. Easy to use, measuring data with a precision of three millimeters, improving work efficiency (non contact measurement is possible), completely abandoning the method of measuring houses with a tape measure (or steel tape measure), reducing survey errors, ensuring area measurement accuracy, and making the measurement results more convincing for owners. Of course, this instrument also has aspects that urgently need improvement, such as difficulty in seeing long-distance target objects under strong sunlight, requiring the use of telescopes and other accessories. In addition, calibrating the level bubble during each measurement is more labor-intensive, and it is best to have automatic calibration. In short, laser rangefinders are still popular among people.
Application of laser rangefinder in handling traffic police cases
From the traffic management bureau, it is learned that laser rangefinders can effectively improve the efficiency and accuracy of traffic accident scene investigation. Laser rangefinders will be widely used in handling traffic police cases, marking that traffic police officers will bid farewell to the "backward state" of long-term use of tape measures to measure traffic accident scenes.
It is understood that the traffic police handling the case can aim at the target with a handheld laser rangefinder and lightly press, and the data at the scene of the traffic accident can be obtained. This laser rangefinder serves as an auxiliary equipment for traffic accident site surveying and mapping system, automatically inputting on-site measurement data and related information into a portable computer through Bluetooth wireless communication. By utilizing the computer's high-speed data calculation and graphic processing functions, it quickly maps out standardized and accurate traffic accident site scale maps and automatically generates on-site survey records, greatly improving measurement speed and accuracy. The laser rangefinder has the characteristics of small size, light weight, and convenient portability. The ranging range is 0.2 to 200 meters, and the measurement accuracy is plus or minus 1.5 millimeters.
