Principle/Classification/Use and Application of Laser Distance Meters
A laser rangefinder is an instrument that uses a laser to accurately determine the distance to a target. Laser rangefinder in the work of a very thin beam of laser light to the target, by the photoelectric element to receive the target reflected laser beam, the timer to determine the laser beam from the time of emission to receive the time to calculate the distance from the observer to the target.
Principle
1. Using the principle of infrared distance measurement or laser distance measurement.
2. The plane of the measured object must be perpendicular to the light.
3. Can measure the object plane for diffuse reflection
4. Ultrasonic ranging accuracy is relatively low, now rarely used.
5. Laser rangefinder accuracy can reach 1 mm error, suitable for a variety of high-precision measurement purposes.
Classification
Laser rangefinder divided into handheld laser rangefinder and telescope laser rangefinder.
1, handheld laser rangefinder: measuring distance is generally within 200 metres, accuracy of about 2mm. This is currently the most widely used laser rangefinder. In addition to the function can measure the distance, generally can also calculate the volume of the measured object.
2, cloud services laser rangefinder: through the Bluetooth Meterbox will laser rangefinder on the measurement data real-time transmission to mobile terminals such as mobile phones, tablet PCs; through wifi networking can be transmitted to the cloud server, in the remote construction partners to share the measurement data in real time, such as iLDM-150.
3, telescope laser rangefinder: measuring distance is generally in the 600-3000 metres, this type of rangefinder measuring distance is relatively far, but the accuracy is relatively low, the accuracy is generally in the 1 metre or so. The main scope of application for long-distance measurement in the field.
Usage
Laser rangefinders are widely used in terrain measurement, battlefield measurement, tanks, aircraft, ships and artillery.
Ranging to the target, measuring the height of clouds, aircraft, missiles and artificial satellites. It is an important technical equipment to improve the accuracy of high tanks, aircraft, ships and artillery. As the price of laser rangefinders continue to fall, the industry has gradually begun to use laser rangefinders, which can be widely used in industrial measurement and control, mines, harbours and other fields.
