Photoelectric switch for object detection

A photoelectric switch and object technology, applied in electronic switches, electrical components, computer applications, etc., can solve problems such as inability to adjust resolution, achieve excellent openness, achieve reliable and stable operation

Active Publication Date: 2015-07-01
NUCTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the resolution of detection cannot be adjusted

Method used

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  • Photoelectric switch for object detection
  • Photoelectric switch for object detection
  • Photoelectric switch for object detection

Examples

Experimental program
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Embodiment Construction

[0035] It should be noted that the following examples are only illustrative descriptions of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and in combination with specific embodiments.

[0036] 1. Overall framework

[0037] See attached Figure 1-4 and 6, the present invention provides a photoelectric switch for determining whether there is an object 0 in the detection area S. see figure 1 , the photoelectric switch includes a light emitting unit 10, a light receiving unit 20, a photoelectric conversion unit 30, and a control and processing unit. The light transmitting unit 10 includes several light transmitters 10-1, 10-2, . . . , 10-N configured to transmit multiple optical signals. The light receiving unit 20 includes a number of optical fiber receivers 20-1, 20-2, . . . , 20-N corresponding to a number of light transmitters. An object detection area S is defined between the light transmitters ...

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Abstract

Embodiments of the present invention provide a photoelectric switch for detection of an object. The photoelectric switch comprises: a light transmitter unit comprising plural light transmitters configured to emit plural light signals; a light receiver unit comprising plural optical fiber receivers in one-to-one correspondence with the plural light transmitters and configured to receive the plural light signals and to merge plural light signals, wherein an object detection area is defined between the plural light transmitters and the plural optical fiber receivers; a photoelectric conversion unit connected to the optical fiber receivers and configured to perform photoelectric conversions on the merged light signals outputted by the optical fiber receivers so as to generate an electric signal; and a control and processing unit connected to both the light transmitter unit and the photoelectric conversion unit, and configured to control and process the light signals and / or the electric signal. Embodiments of the present invention also provide a method for operating the abovementioned photoelectric switch.

Description

technical field [0001] The invention relates to security inspection equipment, and more particularly relates to the design of a photoelectric switch for object detection in the security inspection equipment. Background technique [0002] In the existing security inspection equipment, the function of the photoelectric switch used for object detection is to judge whether there is an object in the detection area. Existing photoelectric switches generally adopt an optical path mode in which one light receiving tube corresponds to one light emitting tube. Therefore, when the number of light-transmitting tubes is large, the number of light-receiving tubes is correspondingly large, resulting in a large overall volume of the switch and complicated design. Moreover, due to the device differences among the various light receiving tubes, the consistency of the received signals of each channel will be poor, thereby affecting the performance of the subsequent amplification processing ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G01V8/20
CPCH03K17/943H03K2217/94026G01V8/24H03K2217/94112F16P3/144G05B19/042G05B2219/26
Inventor 张金宇廖磊丁辉唐虎张丽
Owner NUCTECH CO LTD
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