Laser displacement sensor is mainly used to detect the displacement of objects, thickness, vibration, distance, diameter and other geometric measurements. Laser displacement sensor is a new breakthrough in the detection of different parameters such as displacement, thickness and height, and many people use the video preparation of laser displacement sensor to deeply understand its measurement methods and application functions. According to the measurement principle, the principle of laser displacement sensor is divided into laser triangulation method and laser echo analysis method. Today, we will analyze the difference between triangulation and laser echo analysis.

The difference between triangulation and laser echo analysis:

1. Appropriate measurements vary in distance.

The three Angle measurement method of laser displacement sensor and the laser echo analysis method have great differences in measuring the distance of objects. In general, triangulation can reflect light to the surface of the object through the lens, so it is more suitable for measuring short-range parameters; Laser echo analysis is more suitable for measuring long distance parameters because the distance of the echo is longer than the visible wavelength of red light.

2. The working principle of the measurement is very different.

The three-angle measurement method with high application rate of laser displacement sensor refers to the use of visible red laser to the object to be measured, and then the laser is reflected through the object and received by the receiver lens. For example, a CCD linear camera detects the distance between the laser and the camera through different angles; Laser echo analysis is mainly based on the time required for the transmitted pulse to return when it encounters an obstacle.

3. Measurement accuracy is different.

According to the feedback of many users, the three-angle measurement method and laser echo analysis method of laser displacement sensor have different measurement accuracy. Many people have found through a large number of tests that triangulation has a high measurement accuracy in machining and loading and unloading assembly operations, while laser echo analysis has a slightly lower measurement accuracy because of its longer range.

According to the survey feedback, the application rate of laser displacement sensors in the market has increased year by year, and the position of laser displacement sensor manufacturers has also risen. According to the sharing of these manufacturers, the difference between the triangulation method of laser displacement sensor and the laser echo analysis method is not only manifested in the difference in the measurement distance, but also in the measurement principle and accuracy level.