What is the testing principle of the automatic laser thickness gauge and what are its characteristics?
Laser automatic thickness gauge is specially developed for the plate production line online fully automatic thickness gauge. It has the characteristics of high measuring accuracy, fast measuring speed, many measuring points, reflecting the thickness control information needed for production in time, retaining the data of the production process to be checked, and no radiation hazards. Can effectively improve the measurement and control environment, improve production efficiency, improve the rate of material and product quality.
Automatic thickness gauge using optical triangulation method of thickness measurement, it is the use of a laser source emits a light beam irradiated to the object under test to form a light spot, the light spot by the imaging lens imaging to the photoelectric sensor (PSD, CCD, etc.), photoelectric sensors due to the photoelectric effect and the optical signal into an electrical signal, according to the electrical signal can be determined by the position of the spot in the sensor, which can be geometrically calculated by the thickness of the object under test.
Optical triangulation thickness gauge has a high measurement accuracy, measurement repeatability, wide range of application, not subject to the limitations of the material to be measured, most of the opaque objects can be applied, in addition to the body Hovenia small, low cost, not subject to the influence of external magnetic fields and humid environments, has a broad application prospects.
The advantage of laser thickness gauge is that it is non-contact measurement, not because of wear and tear and loss of accuracy, especially suitable for multi-point measurement in motion. Moreover, compared with ultrasonic thickness gauge accuracy is higher, compared with ray thickness gauge without radiation pollution. The distance sensor of the laser thickness gauge is mounted on an adjustable position bracket, which enables wall thickness measurement at any position.
The raw data measured by the laser probe is transmitted to the control box for processing and calculation. The control cabinet is equipped with synchronous circuit, alarm control circuit, motor drive circuit and other circuit systems, which can realise the functions of data storage and display, and the measurement results are shown directly on the computer display. An alarm lamp is set on the slant of the control box, when the measurement data exceeds the set standard value, the device issues an alarm signal.
Automatic thickness gauge is available for high-precision online testing equipment, online testing is conducive to the timely control of the plate thickness size, to ensure that the detection of real-time, and at the same time can detect enough data to achieve the overall detection.
