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Correlation type photoelectric switch

A photoelectric switch and opposite-beam technology, which is applied in the field of photoelectric sensors, can solve the problems of sacrificing the detection accuracy of photoelectric switches and the volume limit of the measured object, so as to simplify the wiring and debugging work, enhance the stability and anti-interference ability, and avoid frequency offset effect

Pending Publication Date: 2020-04-03
青岛中物云传智能科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this design sacrifices the detection accuracy of the photoelectric switch, and the volume of the measured object is limited

Method used

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  • Correlation type photoelectric switch
  • Correlation type photoelectric switch
  • Correlation type photoelectric switch

Examples

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Embodiment Construction

[0029] The through-beam type photoelectric switch of the present invention comprises a transmitting end and a receiving end, the transmitting end comprises a transmitting end circuit, the receiving end comprises a receiving end circuit, the receiving end circuit comprises a frequency discrimination circuit, the frequency discrimination circuit is provided with a frequency signal output interface, and the frequency signal The output interface is connected to the transmitter circuit, and the pulse signal output by the frequency signal output interface is introduced into the transmitter circuit, and after being processed, the photoelectric transmitter tube is driven to work. The frequency discrimination circuit is selected as LM567 chip, and the frequency signal output interface is pin 5 and pin 6 of LM567 chip. The modulation signal of the transmitter circuit is introduced by the 5 and 6 pins of the LM567 chip. This signal is the phase-locked center frequency of the phase-locked ...

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Abstract

The invention relates to a correlation type photoelectric switch. The switch comprises a transmitting end and a receiving end. The transmitting end comprises a transmitting end circuit. The receivingend comprises a receiving end circuit. The receiving end circuit comprises a frequency discrimination circuit. The frequency discrimination circuit is provided with a frequency signal output interface, the frequency signal output interface is connected with the transmitting end circuit, and a pulse signal output by the frequency signal output interface is introduced into the transmitting end circuit and drives the photoelectric transmitting tube to work after being processed. The photoelectric switch transmitting end circuit is not provided with a special signal generation circuit. Modulationsignals of the transmitting end circuit are provided by self-oscillation frequency feedback of the receiving end frequency discrimination circuit, so that the circuit structure is simplified, and thecircuit and debugging work is simplified. The problem of frequency deviation is avoided. Synchronous automatic tracking of photoelectric transmitting and receiving working frequencies is realized, andthe stability and the anti-interference capability of the circuit are greatly enhanced.

Description

technical field [0001] The invention relates to a photoelectric sensor, in particular to a through-beam photoelectric switch. Background technique [0002] The through-beam photoelectric sensor is a sensor that uses optical elements and electronic elements as the detection part. Photoelectric detection technology has the advantages of high precision, fast response, non-contact and so on. The sensor structure is simple, flexible and diverse. Therefore, photoelectric sensors are widely used in the field of control and testing. It can be used to detect non-electrical changes due to changes in the amount of light, such as light intensity, radiation temperature, gas composition, and more. It can also measure various physical quantities through light transmission, obstruction, reflection, and interference, such as the size, displacement, speed, and temperature of objects. So it is a crucial sensitive device with broad application prospects. When using a photoelectric sensor, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/94
CPCH03K17/94
Inventor 赵兵付晓冬鲍泉宇刘玉龙李宁阳张智璠
Owner 青岛中物云传智能科技有限公司
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