Laser Sensors: 4 Functions Worth Knowing

Laser sensors are sensors that measure with lasers. Each component in this system serves a distinct purpose. This technology, among other things, enables non-contact long-distance measurement with high accuracy, speed, and range.

  1. Measurement of distances

It operates on the same principles as radio radar. After the laser hits the target, the round-trip time and the speed of light are multiplied to determine the laser’s round-trip distance. For measuring long distances, determining target azimuth, improving the signal-to-noise ratio of the receiving system, and ensuring measurement accuracy, lasers with a fibre optic sensor have the advantages of high directivity, high monochromaticity, and high power. A lidar sensor can also provide an accurate representation of maps and surfaces, as well as precise high-resolution maps for measuring distances between locations.

  1. Measurement of length

The ability to precisely measure length is critical in precision machinery manufacturing and optical processing. The accuracy of modern length measurements, which rely on the interference phenomenon of light waves, is dependent on the quality of monochromatic light. Laser sensors are the best possible light source.

  1. Measurement of thickness

The time it takes an ultrasound wave to return to the surface of a solid element is used to measure the ultrasonic thickness (UTM). Ultrasonic thickness gauges are used for this purpose. The ultrasonic sensor analyses the data to determine the object’s thickness in the middle. Because the detection is continuous, it is possible to know the object’s dynamic thickness.

  1. Measurement of speed

The Doppler principle is used in the speed measurement technique of laser sensors. According to the Doppler effect, the frequency measured by an observer can be affected by a variety of factors, including how quickly a wave source or observer moves relative to the medium. The laser Doppler flowmeter is used in this case. In chemical reactions, it can also measure particle size and aggregation rate.

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Virginia Canales

Virginia Canales