A Laser Thickness Gauge Using Laser as Light Source

Abstract

A laser thickness gauge using a laser as a light source. The structure includes a housing. The key is: a lying U-shaped bracket is arranged on the housing, and an upper laser and a lower laser that emit relative to each other are arranged in the U-shaped bracket. Non-diffraction optical system, and area array CCD, on the basis of the above, the laser thickness gauge hits the beams emitted by the upper laser and the lower laser on the upper and lower surfaces of the measured object respectively, and forms two light spots on the upper and lower sides. The light from the two spots is imaged on the area array CCD through the non-diffraction optical system, and then sent to the computer for processing after photoelectric conversion, and the thickness of the measured object can be obtained directly. The beneficial effect of the present invention is that the measurement accuracy is high, reaching + / -0.0015mm, avoiding the measurement error caused by the deformation and vibration of the U-shaped bracket, greatly improving the measurement accuracy, and not afraid of vibration, and the installation and use are simpler and the work is more stable .

Description

technical field [0001] The invention belongs to the technical field of measurement, relates to an object capable of measuring thickness below 5mm, and is widely used in various industrial productions that need to measure the thickness of ultra-thin objects. Background technique [0002] The successful application of laser thickness measurement system in non-contact and online dynamic measurement in industrial production plays a very important role in improving product quality, production efficiency and safety guarantee. It can complete many detection tasks that cannot be completed by contact measurement means. Widely used in online dynamic non-contact thickness measurement of battery pole pieces, used in transparent film / paper / glass / rubber cow felt and other production enterprises, used for online detection of product thickness on the production line, used in steel plate, copper / aluminum foil, plate production Enterprises, on-line detection of the thickness of products on t...

AI Technical Summary

Problems solved by technology

[0003] The current laser thickness gauge is generally composed of two laser displacement sensors. Due to the limitation of the working environment in the industrial production line, there will be high temperature in some workplaces, and once the U-shaped frame is deformed or vibrated, the measurement accuracy will be reduced. Not high, the two photoelectric conversion parts do not work synchronously so that the measurement points of the upper and lower probes do not coincide, and the resulting measurement accuracy is not high, the measurement accuracy is unstable, etc.

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