Laser ranging technology-changing the way distance measurement works

Distance measurement refers to the work of measuring the line length of two points on the ground. Usually it is necessary to measure the horizontal distance, that is, the length of the two point line projected on a certain level. It is one of the factors determining the plane position of the ground point. It is one of the most basic tasks in measurement. Usually it is necessary to measure the horizontal distance, that is, the length of the two point line projected on a certain level.

Distance measurement is required in triangulation, traverse, topographic and engineering surveys. The accuracy of distance measurement is expressed as relative error (relative accuracy). That is, the ratio of the distance measurement error to the distance length is expressed by the formula 1 / n where the numerator is 1. The smaller the ratio, the higher the accuracy of the distance measurement. Traditional distance measurement methods include ruler distance, line-of-sight measurement, parallax distance measurement, and electromagnetic wave distance measurement. With the deepening of laser technology, laser lift measurement has become a new type of high-precision measurement method.

Laser has the characteristics of good linearity, small divergence angle and energy concentration. When lasers are used for ranging, they are generally divided into different types according to the length of the ranging and the principle of ranging. There are usually three types of measurement principles: pulse method, phase method, and triangle method. Different measurement methods have different fields of application. The pulse method (including the time-of-flight method) emits a laser pulse from a laser source and is reflected to the source when the laser pulse encounters an object. Measure the time interval between the laser transmitting time and the receiving time, and then divide it by the beam to calculate the distance from the starting point to the target. The phase method transmits a continuous pulse wave from the transmitting source. Distance; the triangulation method emits a laser beam from a transmitting source, and the laser beam is reflected to the receiving end after encountering the target. The transmitting point, the target, and the receiving point form a triangle. By measuring the angle of the triangle, the distance from the instrument to the target can be measured.

JCJM's laser ranging sensor uses the phase method ranging principle, and the measurement accuracy is usually 1mm. The IP68 housing is highly resistant to dust and water, which enables the laser ranging sensor to work in a variety of harsh environments. Your inquiry is welcome.