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Photoelectric gradient switch device

A switching device, optoelectronic technology, used in electronic switches, electrical components, pulse technology, etc.

Active Publication Date: 2012-10-10
深圳中航技术检测所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the accuracy of length precision displacement measurement equipment can reach the micron level, and the operating speed is also very high, but the speed switching problem has become the bottleneck of automatic measurement for this type of measuring instrument, and this kind of discrimination device is urgently needed to realize automatic measurement.

Method used

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  • Photoelectric gradient switch device
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  • Photoelectric gradient switch device

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Experimental program
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Embodiment Construction

[0017] The present invention will be further described below by specific embodiment:

[0018] The photoelectric gradient switch includes at least one diaphragm 11, a photoelectric converter 1, an isolation device 2, a DC blocking circuit 6, an oscillator 3, two zero-crossing comparators 4 and 7, and two level converters 5 and 8 and two counters 9 and 20. The photoelectric converter 1 is used to receive light energy, the output terminal of the photoelectric converter 1 is connected to the input terminal of the isolation device 2, the output terminal of the isolation device 2 is connected to the input terminal of the DC blocking circuit 6, and the output terminal of the DC blocking circuit 6 Connect to the input terminal of a zero-crossing comparator 7. The output of the comparator is connected to the counting input terminal of the main counter 20 as the counting pulse of the counter after being converted by the level shifter 8 . The isolation device 2 is used to filter out in...

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Abstract

The invention relates to a photoelectric gradient switch device which belongs to the technical field of photoelectricity. The photoelectric gradient switch device comprises at least one diaphragm, a photoelectric converter, an isolating device, a blocking circuit, an oscillator, two zero-over comparators, two level converters and two counters. When an object covers (departs from) the photoelectric gradient switch device, the descending (ascending) change of luminous flux in the diaphragm is input into the input end of the photoelectric converter; an oscillating period of the oscillator is turned once from the counter; two oscillating periods of the oscillator are used as a working period of the main counter for detecting an input signal; and the photoelectric gradient switch device sends a distance warning signal as long as the luminous flux in the diaphragm is changed. The gradient switch device disclosed by the invention does not need a luminous intensity threshold value and has theadvantages of high adaptability and high interference resistance. The photoelectric gradient switch device can provide a warning signal for object enter or departure in a specific area and is a position sensor for an automatic control system.

Description

technical field [0001] The invention belongs to the field of photoelectric technology, and relates to a photoelectric gradual change switch device. Background technique [0002] The side photoelectric microscope is a sub-nanometer photoelectric positioning device, which is usually used in geometric quantity measuring instruments. In the work of the side-end photoelectric microscope, the electromechanical transmission device is required to have extremely high position resolution and braking ability when the positioned surface moves past the positioning point, and these requirements limit the operating speed of the electromechanical transmission device. Usually, the measuring range of this kind of geometric quantity measuring instrument is about 200mm. If the electromechanical transmission device of the instrument is operated at a low speed, the working efficiency of the instrument will be too low and the measurement time will be too long. Due to the long measurement time, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/78
Inventor 束小梅左勇徐晓波
Owner 深圳中航技术检测所有限公司