CN218213480U - Photoelectric sensor capable of resisting strong light interference - Google Patents
Photoelectric sensor capable of resisting strong light interference Download PDFInfo
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- CN218213480U CN218213480U CN202221855238.9U CN202221855238U CN218213480U CN 218213480 U CN218213480 U CN 218213480U CN 202221855238 U CN202221855238 U CN 202221855238U CN 218213480 U CN218213480 U CN 218213480U
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Abstract
The utility model discloses a photoelectric sensor of anti strong light interference, including voltage stabilizing circuit, bias circuit, amplifier circuit, oscillating circuit, detection circuit, switch circuit and output circuit; the voltage stabilizing circuit is connected with the bias circuit, the amplifying circuit and the detection circuit, the bias circuit is connected with the amplifying circuit, the detection circuit is connected with the amplifying circuit, the switching circuit and the oscillating circuit, and the switching circuit is connected with the output circuit; the utility model provides a simple in design can resist the photoelectric sensor of strong light interference.
Description
Technical Field
The utility model relates to a sensor field, more specifically the utility model discloses, it relates to an anti strong light interference's photoelectric sensor.
Background
Photoelectric sensor diffuse reflection comprises transmitter and receiver, and the transmitter is transformed into photoelectric pulse signal with voltage pulse signal and is sent out, and under the preceding condition that has the object, light can reflect back, and the signal of light is received to the receiver, converts it into voltage signal, through signal amplification, signal amplitude discrimination, output signal to reach the purpose that detects. However, the current sensors are prone to signal misjudgment under other strong light interference conditions, and therefore, there is an urgent need for such sensors with reduced misjudgment.
Disclosure of Invention
The utility model overcomes prior art's is not enough, provides a simple in design, can counter the photoelectric sensor of an anti strong light interference of strong light interference.
In order to solve the technical problem, the technical scheme of the utility model as follows:
a photoelectric sensor resisting strong light interference comprises a voltage stabilizing circuit, a bias circuit, an amplifying circuit, an oscillating circuit, a detection circuit, a switch circuit and an output circuit; the voltage stabilizing circuit is connected with the bias circuit, the amplifying circuit and the detection circuit, the bias circuit is connected with the amplifying circuit, the detection circuit is connected with the amplifying circuit, the switching circuit and the oscillating circuit, and the switching circuit is connected with the output circuit;
the bias circuit comprises a resistor R18, a resistor R17, a resistor R50, a polar capacitor C7, a receiver Q3, a capacitor C5, a resistor R16, a capacitor C8, a resistor R19 and a resistor R21; the voltage stabilizing circuit is characterized in that the 6V voltage is connected with one end of a resistor R18, the other end of the resistor R18 is connected with the anode of a polar capacitor C7, one end of a resistor R17 and one end of a receiver Q3, the cathode of the polar capacitor C7 is grounded, the other end of the resistor R17 is connected with one end of a resistor R50, one end of a capacitor C5, one end of a resistor R16 and one end of a capacitor C8, one end of the receiver Q3 for receiving optical signals is connected with the other end of the resistor R50, the other end of the receiver Q3 is connected with the other end of the capacitor C5 and one end of a resistor R19, the other end of the resistor R19 is connected with one end of a resistor R21, and the other end of the resistor R21 is grounded with the other end of the resistor R16 and the other end of the capacitor C8.
Further, the bias circuit is connected with an amplifying circuit, and the amplifying circuit comprises a capacitor C6, a capacitor C11, an amplifier Q2, a resistor R11, a capacitor C9, a resistor R1, a resistor R2 and an amplifier Q1;
the other end of a resistor R19 of the bias circuit is connected with one end of a capacitor C6, the other end of the capacitor C6 is connected with the end 1 of an amplifier Q2, one end of a capacitor C11 and one end of a resistor R11, the other end of the capacitor C11 is grounded with the end 2 of the amplifier Q2, the end 3 of the amplifier Q2 is connected with the other end of the resistor R11, one end of a capacitor C9 and one end of a resistor R1, the other end of the resistor R1 is connected with one end of the resistor R2 to be connected with 6V voltage, the other end of the resistor R2, the other end of the capacitor C9 and the end 1 of the amplifier Q1 are connected, and the end 2 of the amplifier Q1 is grounded.
Furthermore, the amplifying circuit is connected with the detection circuit, and the No. 3 end of an amplifier Q2 of the amplifying circuit is connected with the detection circuit; the detection circuit comprises a resistor R70, an amplifier Q3, a resistor R5, a resistor R73, a light-emitting diode PD1, a diode D6, a capacitor C13, a resistor R6 and a resistor R7;
the No. 3 end of an amplifier Q2 of the amplifying circuit is connected with the anode of a diode D6 and one end of a resistor R5, the other end of the resistor R5 is connected with one end of a resistor R73 and the No. 2 end of the amplifier Q3, the other end of the resistor R73 is connected with the anode of a light-emitting diode PD1, the cathode of the light-emitting diode PD1 is grounded, the No. 3 end of the amplifier Q3 is connected with one end of a resistor R70, and the other end of the resistor R70 is connected with 6V voltage; the cathode of the diode D6 is connected to one end of the capacitor C13, one end of the resistor R6, and one end of the resistor R7, and the other end of the capacitor C13 and the other end of the resistor R6 are grounded.
Furthermore, the 1 end of an amplifier Q3 of the detection circuit is connected with the oscillator circuit; the oscillating circuit comprises a chip IC1A, a resistor R3 and a capacitor C12, wherein the end 2 of the chip IC1A is connected with one end of the resistor R3 and the end 1 of an amplifier Q3 of the detection circuit, the end 1 of the chip IC1A is connected with the other end of the resistor R3 and one end of the capacitor C12, and the other end of the capacitor C12 is grounded.
Further, the other end of the resistor R7 of the detector circuit is connected to a switch circuit, and the switch circuit is connected to the output circuit.
Compared with the prior art, the utility model the advantage lies in:
1, the utility model has the advantages of simple and reasonable structure design, production is convenient, and the practicality is strong, very easily uses widely.
2, the utility model discloses can realize better anti highlight interference through special biasing circuit, its R18 and C7 constitute filter circuit, restrain the noise that comes from the power. R50 and C5 constitute a bootstrap circuit, increasing the sensitivity of the receiver. R17, R16 and C8 form a voltage division circuit, and the voltage at two ends of R16 is adjusted according to the ambient light condition, so that the interference influence of strong light such as sunlight is reduced.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The parts of the embodiment not described in detail can be realized by adopting the conventional design. The parts which are not described in detail in the scheme can be realized by adopting the conventional technical means.
As shown in fig. 1, a photosensor with strong light interference resistance comprises a voltage stabilizing circuit, a bias circuit, an amplifying circuit, an oscillating circuit, a detecting circuit, a switching circuit and an output circuit; the voltage stabilizing circuit is connected with the bias circuit, the amplifying circuit and the detection circuit, the bias circuit is connected with the amplifying circuit, the detection circuit is connected with the amplifying circuit, the switching circuit and the oscillating circuit, and the switching circuit is connected with the output circuit.
The bias circuit comprises a resistor R18, a resistor R17, a resistor R50, a polar capacitor C7, a receiver Q3, a capacitor C5, a resistor R16, a capacitor C8, a resistor R19 and a resistor R21; the voltage stabilizing circuit is characterized in that the 6V voltage is connected with one end of a resistor R18, the other end of the resistor R18 is connected with the anode of a polar capacitor C7, one end of a resistor R17 and one end of a receiver Q3, the cathode of the polar capacitor C7 is grounded, the other end of the resistor R17 is connected with one end of a resistor R50, one end of a capacitor C5, one end of a resistor R16 and one end of a capacitor C8, one end of the receiver Q3 for receiving optical signals is connected with the other end of the resistor R50, the other end of the receiver Q3 is connected with the other end of the capacitor C5 and one end of a resistor R19, the other end of the resistor R19 is connected with one end of a resistor R21, and the other end of the resistor R21 is grounded with the other end of the resistor R16 and the other end of the capacitor C8.
The bias circuit realizes better strong light interference resistance, and R18 and C7 of the bias circuit form a filter circuit to suppress noise from a power supply. R50 and C5 form a bootstrap circuit to increase the sensitivity of the receiver. R17, R16 and C8 form a voltage division circuit, and the voltage at two ends of R16 is adjusted according to the ambient light condition, so that the interference influence of strong light such as sunlight is reduced.
Preferably, the bias circuit is connected to an amplifier circuit, and the amplifier circuit includes a capacitor C6, a capacitor C11, an amplifier Q2, a resistor R11, a capacitor C9, a resistor R1, a resistor R2, and an amplifier Q1.
The other end of a resistor R19 of the bias circuit is connected with one end of a capacitor C6, the other end of the capacitor C6 is connected with the end 1 of an amplifier Q2, one end of a capacitor C11 and one end of a resistor R11, the other end of the capacitor C11 is grounded with the end 2 of the amplifier Q2, the end 3 of the amplifier Q2 is connected with the other end of the resistor R11, one end of a capacitor C9 and one end of a resistor R1, the other end of the resistor R1 is connected with one end of the resistor R2 to be connected with 6V voltage, the other end of the resistor R2, the other end of the capacitor C9 and the end 1 of the amplifier Q1 are connected, and the end 2 of the amplifier Q1 is grounded.
The amplifying circuit is connected with the detection circuit, and the No. 3 end of an amplifier Q2 of the amplifying circuit is connected with the detection circuit; the detection circuit comprises a resistor R70, an amplifier Q3, a resistor R5, a resistor R73, a light-emitting diode PD1, a diode D6, a capacitor C13, a resistor R6 and a resistor R7;
the No. 3 end of an amplifier Q2 of the amplifying circuit is connected with the anode of a diode D6 and one end of a resistor R5, the other end of the resistor R5 is connected with one end of a resistor R73 and the No. 2 end of the amplifier Q3, the other end of the resistor R73 is connected with the anode of a light-emitting diode PD1, the cathode of the light-emitting diode PD1 is grounded, the No. 3 end of the amplifier Q3 is connected with one end of a resistor R70, and the other end of the resistor R70 is connected with 6V voltage; the cathode of the diode D6 is connected to one end of the capacitor C13, one end of the resistor R6, and one end of the resistor R7, and the other end of the capacitor C13 and the other end of the resistor R6 are grounded. The detection circuit realizes that the amplified signal can be selected to pass only when the left end of the resistor R5 is in a high level, so that partial interference signals are avoided.
The 1 end of an amplifier Q3 of the detection circuit is connected with the oscillating circuit; the oscillator circuit comprises a chip IC1A, a resistor R3 and a capacitor C12, wherein the No. 2 end of the chip IC1A is connected with one end of the resistor R3 and the No. 1 end of an amplifier Q3 of the detector circuit, the No. 1 end of the chip IC1A is connected with the other end of the resistor R3 and one end of the capacitor C12, and the other end of the capacitor C12 is grounded. The gate circuit of the chip IC1A generates oscillation, and an oscillation circuit is formed by the characteristics of a Schmidt inverter and an external RC.
The other end of the resistor R7 of the detection circuit is connected to the switch circuit, and the switch circuit is connected to the output circuit. The switch circuit comprises a chip IC1E, a chip IC1F, a resistor R13, a capacitor C14, a resistor R8, a resistor R9 and a resistor R20D; the chip IC1F, the resistor R13, and the chip IC1E are connected in this order, and one end of the chip IC1F is connected to the other end of the resistor R7, one end of the capacitor C14, and one end of the resistor R8 of the detector circuit, one end of the chip IC1E is connected to one end of the resistor R9, the other end of the capacitor C14, and one end of the resistor R20D, and the other end of the resistor R8 is connected to the other end of the resistor R9. The output circuit comprises a diode D12, a resistor R54 and an amplifier Q10, wherein the anode of the diode D12 is connected with the other end of the resistor R20D, the cathode of the diode D12 is connected with one end of the resistor R54 and the No. 1 end of the amplifier Q10, the No. 2 end of the amplifier Q10 is grounded with the other end of the resistor R54, and the No. 3 end of the amplifier Q10 serves as output.
The voltage stabilizing circuit comprises a chip U2, a polar capacitor C4, a capacitor C1, a capacitor C2, a diode D1, a diode D5 and a resistor R49. And the No. 1 end of the chip U2, one end of the capacitor C1 and the anode of the polar capacitor C4 are connected with 6V voltage together. The No. 3 end of the chip U2 is connected with one end of the capacitor C2, the cathode of the diode D5 and one end of the resistor R49, and the other end of the resistor R49 is connected with 24V voltage. The No. 2 end of the chip U2 is grounded with the other end of the capacitor C1, the cathode of the polar capacitor C4, the other end of the capacitor C2, the anode of the diode D5 and the anode of the diode D1, and the cathode of the diode D1 is connected with 0V voltage.
In conclusion, the scheme realizes better anti-highlight interference through the special biasing circuit, effectively solves the misjudgment of signals by matching with other module designs, and greatly improves the use experience of users.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as the protection scope of the present invention.
Claims (5)
1. A photoelectric sensor resisting strong light interference is characterized by comprising a voltage stabilizing circuit, a bias circuit, an amplifying circuit, an oscillating circuit, a detection circuit, a switch circuit and an output circuit; the voltage stabilizing circuit is connected with the bias circuit, the amplifying circuit and the detection circuit, the bias circuit is connected with the amplifying circuit, the detection circuit is connected with the amplifying circuit, the switching circuit and the oscillating circuit, and the switching circuit is connected with the output circuit;
the bias circuit comprises a resistor R18, a resistor R17, a resistor R50, a polar capacitor C7, a receiver Q3, a capacitor C5, a resistor R16, a capacitor C8, a resistor R19 and a resistor R21; the 6V voltage of the voltage stabilizing circuit is connected with one end of a resistor R18, the other end of the resistor R18 is connected with the anode of a polar capacitor C7, one end of a resistor R17 and one end of a receiver Q3, the cathode of the polar capacitor C7 is grounded, the other end of the resistor R17 is connected with one end of a resistor R50, one end of a capacitor C5, one end of a resistor R16 and one end of a capacitor C8, one end of the receiver Q3, which receives a light signal, is connected with the other end of the resistor R50, the other end of the receiver Q3 is connected with the other end of the capacitor C5 and one end of a resistor R19, the other end of the resistor R19 is connected with one end of a resistor R21, and the other end of the resistor R21 is grounded with the other end of the resistor R16 and the other end of the capacitor C8.
2. The photoelectric sensor of claim 1, wherein: the bias circuit is connected with the amplifying circuit, and the amplifying circuit comprises a capacitor C6, a capacitor C11, an amplifier Q2, a resistor R11, a capacitor C9, a resistor R1, a resistor R2 and an amplifier Q1;
the other end of a resistor R19 of the bias circuit is connected with one end of a capacitor C6, the other end of the capacitor C6 is connected with the end 1 of an amplifier Q2, one end of a capacitor C11 and one end of a resistor R11, the other end of the capacitor C11 is grounded with the end 2 of the amplifier Q2, the end 3 of the amplifier Q2 is connected with the other end of the resistor R11, one end of a capacitor C9 and one end of a resistor R1, the other end of the resistor R1 and one end of the resistor R2 are connected with 6V voltage together, the other end of the resistor R2, the other end of the capacitor C9 and the end 1 of the amplifier Q1, and the end 2 of the amplifier Q1 is grounded.
3. The photoelectric sensor of claim 2, wherein: the amplifying circuit is connected with the detection circuit, and the No. 3 end of an amplifier Q2 of the amplifying circuit is connected with the detection circuit; the detection circuit comprises a resistor R70, an amplifier Q3, a resistor R5, a resistor R73, a light-emitting diode PD1, a diode D6, a capacitor C13, a resistor R6 and a resistor R7;
the No. 3 end of an amplifier Q2 of the amplifying circuit is connected with the anode of a diode D6 and one end of a resistor R5, the other end of the resistor R5 is connected with one end of a resistor R73 and the No. 2 end of the amplifier Q3, the other end of the resistor R73 is connected with the anode of a light-emitting diode PD1, the cathode of the light-emitting diode PD1 is grounded, the No. 3 end of the amplifier Q3 is connected with one end of a resistor R70, and the other end of the resistor R70 is connected with 6V voltage; the cathode of the diode D6 is connected to one end of the capacitor C13, one end of the resistor R6, and one end of the resistor R7, and the other end of the capacitor C13 and the other end of the resistor R6 are grounded.
4. A photosensor resistant to strong light interference according to claim 3, wherein: the 1 end of an amplifier Q3 of the detection circuit is connected with the oscillating circuit; the oscillating circuit comprises a chip IC1A, a resistor R3 and a capacitor C12, wherein the end 2 of the chip IC1A is connected with one end of the resistor R3 and the end 1 of an amplifier Q3 of the detection circuit, the end 1 of the chip IC1A is connected with the other end of the resistor R3 and one end of the capacitor C12, and the other end of the capacitor C12 is grounded.
5. A photosensor resistant to intense light interference according to claim 3, wherein: the other end of the resistor R7 of the detection circuit is connected to the switch circuit, and the switch circuit is connected to the output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221855238.9U CN218213480U (en) | 2022-07-05 | 2022-07-05 | Photoelectric sensor capable of resisting strong light interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221855238.9U CN218213480U (en) | 2022-07-05 | 2022-07-05 | Photoelectric sensor capable of resisting strong light interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218213480U true CN218213480U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221855238.9U Active CN218213480U (en) | 2022-07-05 | 2022-07-05 | Photoelectric sensor capable of resisting strong light interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218213480U (en) |
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2022
- 2022-07-05 CN CN202221855238.9U patent/CN218213480U/en active Active
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