CN103595388A - A photoelectric switch with high reliability - Google Patents
A photoelectric switch with high reliability Download PDFInfo
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- CN103595388A CN103595388A CN201210286839.7A CN201210286839A CN103595388A CN 103595388 A CN103595388 A CN 103595388A CN 201210286839 A CN201210286839 A CN 201210286839A CN 103595388 A CN103595388 A CN 103595388A
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Abstract
The invention discloses a photoelectric switch with high reliability. The photoelectric switch with high reliability comprises a light emitting circuit and a photoelectric switch receiving circuit. The light emitting circuit comprises a first grade pulse generator CD4001, a second grade pulse generator CD4001 and a frequency divider CD4060. The frequency divider CD4060 is externally connected to a crystal oscillation circuit. The photoelectric switch receiving circuit is formed by sequentially connecting an infrared phototriode, a low pass filter, a second order band pass filter, a detector circuit and an output circuit. The photoelectric switch with high reliability of the invention is good in anti-interference performance and is widely applicable.
Description
Technical field
The present invention relates to a kind of optoelectronic switch, be specifically related to the optoelectronic switch that a kind of reliability is high.
Background technology
Along with developing rapidly of China's industrial automation technology, optoelectronic switch Automation Elements will be become generally to be adopted, and application is also in continuous expansion.For example for high-speed counting, test the speed, the existence of level control, inspected object, detect many occasions such as accessory size.When the occasion for bank, warehouse, shop, office and other needs is as anti-stealing warning, to its unfailing performance, require high especially.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and the optoelectronic switch that a kind of reliability is high is provided, and its antijamming capability is strong, and reliability is high, and circuit is simple, is convenient to make.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
The optoelectronic switch that reliability is high, it comprises illuminating circuit and optoelectronic switch receiving circuit, described illuminating circuit comprises first, second grade of pulse generator CD4001 and frequency divider CD4060, and the upper whole circuit that swings of an external crystal of frequency divider CD4060; Described optoelectronic switch receiving circuit is connected with output circuit successively by infrared electro triode T2, low pass filter, second-order bandpass filter, detecting circuit.
Further technical scheme is:
The first order pulse generator CD4001 of described illuminating circuit is connected with rheostat R1, and one end ground connection of rheostat R1, one end of another termination K switch 1, other one end of K switch 1 is connected in resistance R 2, the other end of R2 connects capacitor C 1, and the other end of capacitor C 1 is connected on first order pulse generator CD4001; One end that resistance R 2 is adjacent with capacitor C 1 is connected on the pulse generator CD4001 of the second level; Connection+5V power supply between resistance R 2 and K switch 1.
Described low pass filter is comprised of resistance R 13 and capacitor C 11.
The C level of described infrared electro triode T2 is connected to resistance R 11 and capacitor C 10, another termination one resistance R 14 of resistance R 11, the other end of resistance R 14 is connected in the resistance R 13 of low pass filter, being connected with capacitor C 10 of capacitor C 11, capacitor C 10 and capacitor C 11 are connected on the E level of triode T3 simultaneously, the B level of triode T3 is connected with the E level of infrared electro triode T2, the B level of infrared electro triode T2 is connected with resistance R 12, and the other end of resistance R 12 is connected between resistance R 13 and capacitor C 11, connection+5V power supply between resistance R 11 and resistance R 14.
Described detecting circuit is comprised of diode D1 and capacitor C 14, and is connected with resistance R 16 between detecting circuit and output circuit.
Described output circuit is comprised of amplifying circuit and Schmidt circuit.
First order CD4001 is pulse generator, and manually button output detections pulse, for breakdown maintenance.In circuit, use frequency divider CD4060, can stablize the frequency of modulated light signal.Infrared electro triode T2 is with base stage leading foot.Therefore can carry out sensitivity control to it.The hysteresis of Schmidt circuit can be eliminated the critical flutter phenomenon of optoelectronic switch, and that avoids optoelectronic switch turns over phenomenon by mistake.Variable in distance between light source and phototriode, in very large range little on the impact of T3 output signal.
Compared with prior art, the invention has the beneficial effects as follows:
1, phototriode T3 is not easy saturatedly, can well suppress ambient light and disturb.
2, Schmidt circuit can be trembled critical the disappearing of switch, and that avoids optoelectronic switch turns over phenomenon by mistake, carries
The high anti-jamming capacity of high complete machine.
3, applied range, can be applicable in reflective or correlation optoelectronic switch.
4, circuit is simple, is convenient to make.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the circuit diagram of illuminating circuit of the present invention.
Fig. 2 is the circuit diagram of electric switch receiving circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Embodiments of the present invention include but not limited to the following example.
Embodiment
The high optoelectronic switch of a kind of reliability as shown in Figure 1, it comprises illuminating circuit and optoelectronic switch receiving circuit, illuminating circuit comprises first, second grade of pulse generator CD4001 and frequency divider CD4060, and the upper whole circuit that swings of an external crystal of frequency divider CD4060; Optoelectronic switch receiving circuit is connected with output circuit successively by infrared electro triode T2, low pass filter, second-order bandpass filter, detecting circuit.The first order pulse generator CD4001 of illuminating circuit is connected with rheostat R1, and one end ground connection of rheostat R1, one end of another termination K switch 1, other one end of K switch 1 is connected in resistance R 2, the other end of R2 connects capacitor C 1, and the other end of capacitor C 1 is connected on first order pulse generator CD4001; One end that resistance R 2 is adjacent with capacitor C 1 is connected on the pulse generator CD4001 of the second level; Connection+5V power supply between resistance R 2 and K switch 1.Low pass filter is comprised of resistance R 13 and capacitor C 11.The C level of infrared electro triode T2 is connected to resistance R 11 and capacitor C 10, another termination one resistance R 14 of resistance R 11, the other end of resistance R 14 is connected in the resistance R 13 of low pass filter, being connected with capacitor C 10 of capacitor C 11, capacitor C 10 and capacitor C 11 are connected on the E level of triode T3 simultaneously, the B level of triode T3 is connected with the E level of infrared electro triode T2, the B level of infrared electro triode T2 is connected with resistance R 12, and the other end of resistance R 12 is connected between resistance R 13 and capacitor C 11, connection+5V power supply between resistance R 11 and resistance R 14.Detecting circuit is comprised of diode D1 and capacitor C 14, and is connected with resistance R 16 between detecting circuit and output circuit.Output circuit is comprised of amplifying circuit and Schmidt circuit.
According to the above embodiments, can well complete the present invention.
Be as mentioned above embodiments of the invention.The present invention is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (6)
1. the optoelectronic switch that reliability is high, it is characterized in that: it comprises illuminating circuit and optoelectronic switch receiving circuit, described illuminating circuit comprises first, second grade of pulse generator CD4001 and frequency divider CD4060, and the upper whole circuit that swings of an external crystal of frequency divider CD4060; Described optoelectronic switch receiving circuit is connected with output circuit successively by infrared electro triode T2, low pass filter, second-order bandpass filter, detecting circuit.
2. the high optoelectronic switch of reliability according to claim 1, it is characterized in that: the first order pulse generator CD4001 of described illuminating circuit is connected with rheostat R1, and one end ground connection of rheostat R1, one end of another termination K switch 1, other one end of K switch 1 is connected in resistance R 2, the other end of R2 connects capacitor C 1, and the other end of capacitor C 1 is connected on first order pulse generator CD4001; One end that resistance R 2 is adjacent with capacitor C 1 is connected on the pulse generator CD4001 of the second level; Connection+5V power supply between resistance R 2 and K switch 1.
3. the high optoelectronic switch of reliability according to claim 1, is characterized in that: described low pass filter is comprised of resistance R 13 and capacitor C 11.
4. the high optoelectronic switch of reliability according to claim 1, it is characterized in that: the C level of described infrared electro triode T2 is connected to resistance R 11 and capacitor C 10, another termination one resistance R 14 of resistance R 11, the other end of resistance R 14 is connected in the resistance R 13 of low pass filter, being connected with capacitor C 10 of capacitor C 11, capacitor C 10 and capacitor C 11 are connected on the E level of triode T3 simultaneously, the B level of triode T3 is connected with the E level of infrared electro triode T2, the B level of infrared electro triode T2 is connected with resistance R 12, and the other end of resistance R 12 is connected between resistance R 13 and capacitor C 11, connection+5V power supply between resistance R 11 and resistance R 14.
5. the high optoelectronic switch of reliability according to claim 1, is characterized in that: described detecting circuit is comprised of diode D1 and capacitor C 14, and is connected with resistance R 16 between detecting circuit and output circuit.
6. the high optoelectronic switch of reliability according to claim 1, is characterized in that: described output circuit is comprised of amplifying circuit and Schmidt circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286839.7A CN103595388A (en) | 2012-08-14 | 2012-08-14 | A photoelectric switch with high reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286839.7A CN103595388A (en) | 2012-08-14 | 2012-08-14 | A photoelectric switch with high reliability |
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| Publication Number | Publication Date |
|---|---|
| CN103595388A true CN103595388A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210286839.7A Pending CN103595388A (en) | 2012-08-14 | 2012-08-14 | A photoelectric switch with high reliability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933570A (en) * | 2018-07-13 | 2018-12-04 | 厦门芯豪科技有限公司 | A kind of phototriode anti saturation circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108382U (en) * | 1991-12-27 | 1992-06-24 | 郑元虎 | Infrared photoelectric switch |
| US5134304A (en) * | 1990-05-15 | 1992-07-28 | Fuji Electric Co., Ltd. | Light projecting circuit in a photoelectric switch |
| US20030127586A1 (en) * | 2001-12-14 | 2003-07-10 | Yasuhiro Maruyama | Photo-detecting method and photo-detecting device |
| CN202713257U (en) * | 2012-08-14 | 2013-01-30 | 成都思迈科技发展有限责任公司 | Photoelectric switch with high reliability |
-
2012
- 2012-08-14 CN CN201210286839.7A patent/CN103595388A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134304A (en) * | 1990-05-15 | 1992-07-28 | Fuji Electric Co., Ltd. | Light projecting circuit in a photoelectric switch |
| CN2108382U (en) * | 1991-12-27 | 1992-06-24 | 郑元虎 | Infrared photoelectric switch |
| US20030127586A1 (en) * | 2001-12-14 | 2003-07-10 | Yasuhiro Maruyama | Photo-detecting method and photo-detecting device |
| CN202713257U (en) * | 2012-08-14 | 2013-01-30 | 成都思迈科技发展有限责任公司 | Photoelectric switch with high reliability |
Non-Patent Citations (1)
| Title |
|---|
| 曹晓华等: ""一种高可靠性光电开关的实现"", 《自动化仪表》, vol. 24, no. 12, 31 December 2003 (2003-12-31), pages 55 - 56 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108933570A (en) * | 2018-07-13 | 2018-12-04 | 厦门芯豪科技有限公司 | A kind of phototriode anti saturation circuit |
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Application publication date: 20140219 |