CN110322649B - Control system for photoelectric sensor - Google Patents
Control system for photoelectric sensor Download PDFInfo
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- CN110322649B CN110322649B CN201910620616.1A CN201910620616A CN110322649B CN 110322649 B CN110322649 B CN 110322649B CN 201910620616 A CN201910620616 A CN 201910620616A CN 110322649 B CN110322649 B CN 110322649B
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- 239000003990 capacitor Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electronic Switches (AREA)
Abstract
The invention provides a control system for a photoelectric sensor, which comprises a transmitting unit, a receiving unit, an operation unit, a display unit and an output unit, wherein the operation unit is connected with the receiving unit and the display unit, the output unit comprises a diode D2 and a diode D3 which are used for rectification, a triode Q1, a triode Q2, a resistor R5, a resistor R6 and a resistor R7, the display unit comprises a light emitting diode LED and a resistor R4 which are used for display, the resistor R4 is connected in series with the anode of the diode LED, whether the space between the diode DP1 and the diode DL1 is blocked is judged by the bright/non-bright state of the diode LED, the input voltage of the circuit can keep normal work with the width of 4-30V, and the circuit does not generate heat. The working consumption current is less than 50% less than that of the same type of imported products, the protection function is complete, and all input and output ends are connected in a wrong way and cannot be burnt out.
Description
Technical Field
The invention relates to the technical field of photoelectric sensors, in particular to a control system for a photoelectric sensor.
Background
A photosensor is a device that converts an optical signal into an electrical signal. The working principle is based on the photoelectric effect. The photoelectric effect refers to the phenomenon that electrons of substances absorb photon energy to generate corresponding electric effect when light irradiates on certain substances, and the existing photoelectric sensor control system lacks warning when a light source is shielded.
Therefore, how to design a control system for a photoelectric sensor becomes a problem to be solved currently.
Disclosure of Invention
The present invention aims to solve the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions: a control system for a photoelectric sensor, comprising a transmitting unit, a receiving unit, an operation unit, a display unit and an output unit, wherein:
The emitting unit comprises a diode DL1 used as a light source and a resistor R2, wherein the resistor R2 is connected in series with the anode of the diode DL 1;
The receiving unit comprises a diode DP1 for receiving the light source and a resistor R3, and the resistor R3 is connected in series with the anode of the diode DP 1;
The operation unit is connected with the receiving unit and the display unit;
the display unit comprises a Light Emitting Diode (LED) used for displaying and a resistor R4, wherein the resistor R4 is connected in series with the anode of the diode (LED);
The output unit comprises a diode D2 and a diode D3 for rectification, and a triode Q1, a triode Q2, a resistor R5, a resistor R6 and a resistor R7; the emitter of the triode Q1 is grounded, a resistor R5 is connected between the base and the emitter, the collector of the resistor R5 is connected with the negative electrode of a diode D2, the emitter of the triode Q2 is grounded, a resistor R7 is connected between the base and the emitter, the negative electrode of the diode D3 is connected with the base of the triode Q2, the positive electrode of the diode D3 and the positive electrode of the diode D2 are commonly connected to one end of a resistor R6, and the other end of the resistor R6 is connected with a circuit power supply voltage Vcc;
The control system further comprises a triode V1, a diode D1 for voltage stabilization and a resistor R1, wherein the base electrode of the triode V1 is grounded, the emitter electrode is connected with a circuit power supply voltage Vcc, the collector electrode is connected with the cathode of the diode D1, and the anode of the diode D1 is connected with the positive power supply in series with the resistor R1.
Furthermore, the operation unit is a logic gate H8, the logic gate H8 is provided with a pin 1, a pin 2, a pin 3, a pin 4 and a pin 5, the pin 1 is connected with Vcc, the pin 2 is connected between the anode of the diode DP1 and the resistor R3, the pin 3 is grounded, the pin 4 is connected with the resistor R4, and the pin 5 is connected with Vcc.
Further, one end of the resistor R2 is connected with Vcc, the other end is connected with the positive electrode of the diode DL1, and the negative electrode of the diode DL1 is grounded.
Further, one end of the resistor R3 is connected with Vcc, the other end is connected with the positive electrode of the diode DP1, and the negative electrode of the diode DP1 is grounded.
Further, the control system further comprises ports 1 to 10, wherein the port 1 and the port 2 are respectively arranged at the positive end and the negative end of the power supply, the port 3 and the port 4 are respectively arranged at the positive end and the negative end of the diode LED, the port 5 and the port 6 are respectively arranged at the collector of the triode Q1 and the collector of the triode Q2 as output ends, the port 7 is arranged between the resistor R3 and the positive end of the diode DP1, the port 8 is arranged between the positive end of the diode D1 and the resistor R1, the port 9 and the port 10 are respectively arranged at two ends of the resistor 2, and the port 9 is connected with Vcc.
Further, the logic gate H8 is an exclusive or gate.
Further, the port 2 is also provided at the cathode of the diode DL1 and the diode DP 1.
Further, the port 8 and the port 9 are connected with a capacitor.
The invention has the beneficial effects that: whether the diode DP1 and the diode DL1 are blocked or not is judged by the bright/non-bright state of the diode LED, and the technical scheme of the invention is accurate in detection, and can accurately and timely feed back the actual blocking condition, and the circuit input voltage is 4-30V wide, can keep normal work, and does not generate heat. The working consumption current is less than 50% less than that of the same type of imported products, the protection function is complete, and all input and output ends are connected in a wrong way and cannot be burnt out.
Drawings
FIG. 1 is a schematic circuit diagram of one embodiment of the present invention;
FIG. 2 is a diagram illustrating the distribution of ports according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. On the contrary, the embodiments of the invention include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
Referring to fig. 1 and 2, a control system for a photoelectric sensor includes a transmitting unit, a receiving unit, an operation unit, a display unit and an output unit, wherein the transmitting unit includes a diode DL1 serving as a light source and a resistor R2, the resistor R2 is connected in series with the anode of the diode DL1, one end of the resistor R2 is connected to Vcc, the other end is connected to the anode of the diode DL1, and the cathode of the diode DL1 is grounded; the receiving unit comprises a diode DP1 for receiving a light source and a resistor R3, wherein the resistor R3 is connected in series with the positive electrode of the diode DP1, one end of the resistor R3 is connected with Vcc, the other end of the resistor R3 is connected with the positive electrode of the diode DP1, and the negative electrode of the diode DP1 is grounded; the operation unit is connected with the receiving unit and the display unit; the display unit comprises a Light Emitting Diode (LED) used for displaying and a resistor R4, wherein the resistor R4 is connected in series with the anode of the diode (LED); the output unit comprises a diode D2 and a diode D3 for rectification, and a triode Q1, a triode Q2, a resistor R5, a resistor R6 and a resistor R7; the emitter of the triode Q1 is grounded, a resistor R5 is connected between the base and the emitter, the collector of the resistor R5 is connected with the negative electrode of a diode D2, the emitter of the triode Q2 is grounded, a resistor R7 is connected between the base and the emitter, the negative electrode of the diode D3 is connected with the base of the triode Q2, the positive electrode of the diode D3 and the positive electrode of the diode D2 are commonly connected to one end of a resistor R6, and the other end of the resistor R6 is connected with a circuit power supply voltage Vcc;
The control system further comprises a triode V1, a diode D1 for voltage stabilization and a resistor R1, wherein the base electrode of the triode V1 is grounded, the emitter electrode is connected with a circuit power supply voltage Vcc, the collector electrode is connected with the cathode of the diode D1, and the anode of the diode D1 is connected with the positive power supply in series with the resistor R1.
In one embodiment, the operation unit is a logic gate H8, the logic gate H8 is provided with a pin 1, a pin 2, a pin 3, a pin 4, and a pin 5, the pin 1 is connected to Vcc, the pin 2 is connected between the anode of the diode DP1 and the resistor R3, the pin 3 is grounded, the pin 4 is connected to the resistor R4, the pin 5 is connected to Vcc, and the logic gate H8 is an exclusive or gate.
Further, the control system further comprises ports 1 to 10, wherein the port 1 and the port 2 are respectively arranged at the positive end and the negative end of the power supply, the port 3 and the port 4 are respectively arranged at the positive end and the negative end of the diode LED, the port 5 and the port 6 are respectively arranged at the collector of the triode Q1 and the collector of the triode Q2 to be used as output ends, the port 7 is arranged between the resistor R3 and the positive end of the diode DP1, the port 8 is arranged between the positive end of the diode D1 and the resistor R1, the port 9 and the port 10 are respectively arranged at the two ends of the resistor 2 and the port 9 is connected with Vcc, the port 2 is also arranged at the negative ends of the diode DL1 and the diode DP1, and the port 8 and the port 9 are connected with a capacitor.
In this embodiment, the resistance values of the resistors and the types of the diodes and the triodes refer to fig. 1, wherein the resistors r1=47r, r2=470r, r3=3k6, r4=1k2, r5=10k, r6=3k3, and r7=10k; the diodes D1, D2 and D3 are 4148, the triode V1 is 7133, the triodes Q1 and Q2 are 491, and the chip is SC88A.
In this embodiment, the resistors R1, R2, R3, R4, R6 are pull-up resistors, and the resistors R5, R7 are pull-down resistors.
For better understanding of the present invention, when the temperature is 25 ℃, high level V IH > 2.0V, low level V IL < 0.8V, high level V OH > 2.48V and low level V OL < 0.4V are input into the circuit, therefore, referring to fig. 1 (logic gate H8 is an exclusive or gate), vcc=3.3v, pin 1 of the exclusive or gate is always high level, if port 7 is input high level, pin 4 is output low level, if port 7 is input low level, pin 4 is output high level; assuming that the pin 4 output is high, the LED diode is on, i.e., port 7 input is low.
In this embodiment, when the light emitted by the diode DL1 is received by the diode DP1, the port 6 outputs a successful result, and when the light emitted by the diode DL1 is not received by the diode DP1 or the received light intensity is insufficient (i.e. the light intensity between the diode DL1 and the diode DP1 is blocked), the diode LED is lightened to warn, and the port 5 outputs a blocked result. Transistor Q1 and transistor Q2 are negative output on and off, respectively, and are output as switching values.
It should be understood that, for those skilled in the art to which the present invention pertains, corresponding equivalent changes can be made according to the technical scheme and the conception thereof, and all non-inventive equivalent substitutions shall fall within the scope of the present disclosure. The invention can be used in the fingerprint detection field and also can be used in applications requiring detection of other small signals.
Claims (6)
1. A control system for a photoelectric sensor, comprising a transmitting unit, a receiving unit, an operation unit, a display unit and an output unit, wherein:
the emitting unit comprises a diode DL1 used as a light source and a resistor R2, wherein the resistor R2 is connected in series with the anode of the diode DL 1; one end of the resistor R2 is connected with Vcc, the other end of the resistor R2 is connected with the positive electrode of the diode DL1, and the negative electrode of the diode DL1 is grounded;
The receiving unit comprises a diode DP1 for receiving the light source and a resistor R3, and the resistor R3 is connected in series with the anode of the diode DP 1;
The operation unit is connected with the receiving unit and the display unit;
The operation unit comprises a logic gate H8, wherein the logic gate H8 is provided with a pin 1, a pin 2, a pin 3, a pin 4 and a pin 5, the pin 1 is connected with Vcc, the pin 2 is connected between the anode of the diode DP1 and the resistor R3, the pin 3 is grounded, the pin 4 is connected with the resistor R4, and the pin 5 is connected with Vcc;
the display unit comprises a Light Emitting Diode (LED) used for displaying and a resistor R4, wherein the resistor R4 is connected in series with the anode of the diode (LED);
The output unit comprises a diode D2 and a diode D3 for rectification, and a triode Q1, a triode Q2, a resistor R5, a resistor R6 and a resistor R7; the emitter of the triode Q1 is grounded, a resistor R5 is connected between the base and the emitter, the collector of the resistor R5 is connected with the negative electrode of a diode D2, the emitter of the triode Q2 is grounded, a resistor R7 is connected between the base and the emitter, the negative electrode of the diode D3 is connected with the base of the triode Q2, the positive electrode of the diode D3 and the positive electrode of the diode D2 are commonly connected to one end of a resistor R6, and the other end of the resistor R6 is connected with a circuit power supply voltage Vcc;
The control system further comprises a triode V1, a diode D1 for voltage stabilization and a resistor R1, wherein the base electrode of the triode V1 is grounded, the emitter electrode is connected with a circuit power supply voltage Vcc, the collector electrode is connected with the cathode of the diode D1, and the anode of the diode D1 is connected with the positive power supply in series with the resistor R1.
2. A control system for a photosensor according to claim 1, wherein the resistor R3 is connected to Vcc at one end and to the anode of the diode DP1 at the other end, and the cathode of the diode DP1 is grounded.
3. A control system for a photosensor according to claim 1, further comprising ports 1 to 10, wherein the ports 1, 2 are provided at the positive and negative terminals of the power supply, respectively, the ports 3 and 4 are provided at the positive and negative terminals of the diode LED, respectively, the ports 5 and 6 are provided at the collector of the transistor Q1 and the collector of the transistor Q2 as output terminals, respectively, the port 7 is provided between the resistor R3 and the positive terminal of the diode DP1, the port 8 is provided between the positive terminal of the diode D1 and the resistor R1, the ports 9 and 10 are provided at both ends of the resistor 2, respectively, and the ports 9 are connected to Vcc.
4. A control system for a photosensor according to claim 3, wherein the port 2 is also provided at the cathode of the diode DL1 and the diode DP 1.
5. A control system for a photoelectric sensor according to claim 3, wherein the ports 8 and 9 are connected to a capacitor.
6. A control system for a photosensor according to claim 1, wherein the logic gate H8 is an exclusive or gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620616.1A CN110322649B (en) | 2019-07-10 | 2019-07-10 | Control system for photoelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620616.1A CN110322649B (en) | 2019-07-10 | 2019-07-10 | Control system for photoelectric sensor |
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| Publication Number | Publication Date |
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| CN110322649A CN110322649A (en) | 2019-10-11 |
| CN110322649B true CN110322649B (en) | 2024-05-03 |
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| CN201910620616.1A Active CN110322649B (en) | 2019-07-10 | 2019-07-10 | Control system for photoelectric sensor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742772A (en) * | 2009-12-24 | 2010-06-16 | 海洋王照明科技股份有限公司 | Signal indication lamp and LED flashing control circuit |
| CN201954076U (en) * | 2011-01-27 | 2011-08-31 | 陈清尧 | Water pipe inductive control switch |
| CN202396045U (en) * | 2011-12-15 | 2012-08-22 | 祝平 | LED lamp decoration intelligent drive circuit |
| CN204238678U (en) * | 2014-11-20 | 2015-04-01 | 重庆宁来科贸有限公司 | A kind of anti-theft safety door that can guard against timely |
| DE202016101998U1 (en) * | 2016-04-15 | 2016-05-02 | Zhejiang Twinsel Electronic Technology Co., Ltd. | Control circuit of a switch dimming LED light |
| KR101834509B1 (en) * | 2018-01-09 | 2018-03-05 | 주식회사 포비드림 | The flash for salvage alarm |
-
2019
- 2019-07-10 CN CN201910620616.1A patent/CN110322649B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742772A (en) * | 2009-12-24 | 2010-06-16 | 海洋王照明科技股份有限公司 | Signal indication lamp and LED flashing control circuit |
| CN201954076U (en) * | 2011-01-27 | 2011-08-31 | 陈清尧 | Water pipe inductive control switch |
| CN202396045U (en) * | 2011-12-15 | 2012-08-22 | 祝平 | LED lamp decoration intelligent drive circuit |
| CN204238678U (en) * | 2014-11-20 | 2015-04-01 | 重庆宁来科贸有限公司 | A kind of anti-theft safety door that can guard against timely |
| DE202016101998U1 (en) * | 2016-04-15 | 2016-05-02 | Zhejiang Twinsel Electronic Technology Co., Ltd. | Control circuit of a switch dimming LED light |
| KR101834509B1 (en) * | 2018-01-09 | 2018-03-05 | 주식회사 포비드림 | The flash for salvage alarm |
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| Publication number | Publication date |
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| CN110322649A (en) | 2019-10-11 |
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Effective date of registration: 20240307 Address after: 523776, Room 1001, Building 5, No. 168 Dalang Fuli East Road, Dalang Town, Dongguan City, Guangdong Province Applicant after: Guangdong Mote Intelligent Control Co.,Ltd. Country or region after: China Address before: 518000 14C, building 2, Zhongtai international, intersection of South Ring Road and Central Road, Wanfeng community, Xinqiao street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Mott Intelligent Control Co.,Ltd. Country or region before: China |
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Inventor after: Zhang Haijun Inventor after: Li Guotian Inventor after: Wang Chaozhong Inventor before: Wang Chaozhong Inventor before: Li Guotian Inventor before: Zhang Haijun |