photoelectric displacement sensor based on cis

Abstract

The invention provides a CIS-based photoelectric displacement sensor. The CIS-based photoelectric displacement sensor comprises an outer protective barrel, a sensor core, a displacement slide bar, a CIS contact type image sensor, a measurement control circuit board and a cable, wherein the sensor core, the CIS contact type image sensor and the measurement control circuit board are all packaged in the outer protective barrel, a slit is formed between a mounting groove and a slideway in the length direction of the sensor core, the mounting groove and the slideway are formed in the sensor core, the mounting groove is communicated with the slideway through the slit, one part of the displacement slide bar slides in the slideway, the other part of the displacement slide bar stretches out of the outer protective barrel from the slideway, the CIS contact type image sensor mounted in the mounting groove receives reflected light of the displacement slide bar through the slit, converts the reflected light into voltage signals, outputs the voltage signals to the measurement control circuit board and leads the voltage signals out of the outer protective barrel through the cable. The photoelectric displacement sensor is concise in structure, high in precision, high in working reliability and stability and suitable for popularization and application of small and medium-range displacement monitoring in engineering monitoring.

Description

technical field [0001] The invention relates to the technical field of displacement sensors, in particular to a photoelectric displacement sensor based on a contact image sensor (CIS). Background technique [0002] Displacement sensors are one of the important monitoring devices for engineering safety monitoring and engineering automation monitoring and monitoring systems in industrial and civil engineering structures. They are widely used in monitoring the safety and stability of hydraulic structures, tunnels, bridges, railways, highways and other projects. , involving, for example, the displacement of geotechnical engineering structures, deformation displacement monitoring and data acquisition. Displacement sensors widely used at present include potentiometer displacement sensors, ultrasonic displacement sensors, magnetostrictive displacement sensors, vibrating wire displacement sensors, and photoelectric displacement sensors. [0003] Among them, the basic principle of t...

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Problems solved by technology

[0004] The present invention aims at the problem that existing potentiometer displacement sensors are not suitable for application in harsh environments such as vibration and humidity, and the anti-interference ability of ultrasonic displacement sensors, magnetostrictive displacement sensors, vibrating wire displacement sensors and laser photoelectric displacement sensors Poor, low precision or expensive problems, a new CIS photoelectric displacement sensor is provided, which has the advantages of low price, simple structure, more stable and reliable performance, high resolution, high accuracy, etc., which can not only greatly save the cost of the sensor, And it is very suitable for a large number of engineering inspection applications

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