CN213240869U - Non-contact infrared induction circuit - Google Patents
Non-contact infrared induction circuit Download PDFInfo
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- CN213240869U CN213240869U CN202022474657.5U CN202022474657U CN213240869U CN 213240869 U CN213240869 U CN 213240869U CN 202022474657 U CN202022474657 U CN 202022474657U CN 213240869 U CN213240869 U CN 213240869U
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Abstract
The utility model discloses a non-contact infrared induction circuit, which comprises a main control module, and a power supply module, an emission module and a receiving module which are all connected with the main control module, wherein the receiving module comprises a receiving circuit, the receiving circuit comprises an infrared receiving diode PD1, a triode Q1, a triode Q2, a triode Q3, a triode Q5, a capacitor C1 and an adjusting resistor R10, the power supply module is respectively connected with the cathode of the infrared receiving diode PD1, triode Q1 collecting electrode, triode Q2 base, triode Q3 collecting electrode, electric capacity C1 one end, adjusting resistor R10 one end, infrared receiving diode PD1 positive pole is connected with triode Q1 base, the other end of electric capacity C1 is connected respectively to the emission level of triode Q1, adjusting resistor R10 other end, triode Q5 collecting electrode, electric capacity C1 one end is connected with triode Q3 base, the main control module is connected triode Q2 collecting electrode and triode Q5 base respectively. The utility model provides a triggering range is little to highly sensitive non-contact infrared induction circuit.
Description
Technical Field
The utility model relates to a non-contact induction circuit technical field especially relates to a non-contact infrared induction circuit.
Background
The existing non-contact infrared sensing circuit is applied to an induction type liquid soap box product, an infrared transmitting tube is adopted to emit infrared light, the infrared light meets an object and is reflected, the reflected light is received by an integrated infrared receiving tube, and then the object in front is detected, and response can be made. If the emitted infrared light is not reflected back, no object exists in front, and no response is made.
The sensing range of the existing integrated infrared receiving tube is large, and the infrared receiving tube is very easy to be influenced by external ambient light, so that the phenomenon of false triggering is caused. Meanwhile, the induction sensitivity of the trigger signal in the trigger enclosure is low, so that the phenomenon of insensitivity to trigger is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a triggering range is little to highly sensitive non-contact infrared induction circuit.
The utility model discloses a technical scheme that non-contact infrared induction circuit adopted is:
a non-contact infrared induction circuit comprises a main control module, and a power supply module, a transmitting module and a receiving module which are connected with the main control module, the receiving module comprises a receiving circuit, the receiving circuit comprises an infrared receiving diode PD1, a triode Q1, a triode Q2, a triode Q3, a triode Q5, a capacitor C1 and an adjusting resistor R10, the power supply module is respectively connected with the cathode of the infrared receiving diode PD1, the collector of the triode Q1, the base of the triode Q2, the collector of the triode Q3, one end of the capacitor C1 and one end of the adjusting resistor R10, the anode of the infrared receiving diode PD1 is connected with the base electrode of a triode Q1, the emission stage of the triode Q1 is respectively connected with the other end of a capacitor C1, the other end of an adjusting resistor R10 and the collector of a triode Q5, one end of the capacitor C1 is connected with the base electrode of the triode Q3, and the master control module is respectively connected with the collector electrode of the triode Q2 and the base electrode of the triode Q5.
Preferably, the main control module comprises a main control chip U1, and an AD1 pin of the main control chip U1 is connected to the power supply module.
Preferably, the power supply module comprises a power supply circuit, the power supply circuit comprises a power supply connector J2 and a power supply chip U2, the power supply connector J2 is respectively connected with an AD1 pin of the main control chip U1 and a Vin pin of the power supply chip U2, a grounding capacitor C4 is arranged between the power supply connector J2 and the AD1 pin, and a ground capacitor C5 is arranged on a Vout pin of the power supply chip U2.
Preferably, the transmitting module includes a transmitting circuit, the transmitting circuit includes an infrared transmitting tube D2 and a triode Q4, the power supply connector J2 is connected with the positive electrode of the infrared transmitting tube D2, the negative electrode of the infrared transmitting tube D2 is connected with the collector of the triode Q4, the RXD pin of the main control chip U1 is connected with the base of the triode Q4, and the emitter of the triode Q4 is grounded.
Preferably, the portable electronic device further comprises a KEY control module, the KEY control module comprises a KEY control circuit, the KEY control circuit comprises a switch S1 and a switch S2, one end of the switch S1 is connected with a KEY1 pin of the main control chip U1, the other end of the switch S1 is grounded, one end of the switch S2 is connected with the power supply connector J2, and the other end of the switch S2 is respectively connected with a KEY2 pin of the main control chip U1, a KEY3 pin of the main control chip U1 and an EN pin of the power supply chip U2.
Preferably, the intelligent LED lamp further comprises an indicator lamp module, the indicator lamp module comprises an indicator lamp circuit, the indicator lamp circuit comprises a RED indicator lamp D1 and a GREEN indicator lamp D2, the indicator lamp D1 is connected with the RED pin of the main control chip U1, and the indicator lamp D2 is connected with the GREEN pin of the main control chip U1.
Preferably, the intelligent control system further comprises a motor control module, wherein the motor control module comprises a motor control circuit, and the motor control circuit comprises an MOS (metal oxide semiconductor) tube Q6 and an interface J1 which are sequentially connected with a PWM2 pin of a main control chip U1.
The utility model discloses a non-contact infrared induction circuit's beneficial effect is: the receiving module comprises a receiving circuit, the receiving circuit comprises an infrared receiving diode PD1, a triode Q1, a triode Q2, a triode Q3, a triode Q5, a capacitor C1 and an adjusting resistor R10, the power supply module is respectively connected with the negative electrode of the infrared receiving diode PD1, the collector of the triode Q1, the base of the triode Q2 and the collector of the triode Q3, one end of the capacitor C1 and one end of the adjusting resistor R10, the positive electrode of the infrared receiving diode PD1 is connected with the base of the triode Q1, the emitting stage of the triode Q1 is respectively connected with the other end of the capacitor C1, the other end of the adjusting resistor R10 and the collector of the triode Q5, one end of the capacitor C1 is connected with the base of the triode Q3, and the main control module. The infrared signal received by the infrared receiving diode PD1 can change the strength of the signal by adjusting the resistor R10, and the distance adjustment of the sensing distance can be realized. Meanwhile, the infrared receiving diode PD1 is conducted after receiving infrared pulse light reflected by foreign objects, the base current of the triode Q1 and the triode Q1 are conducted, signals are coupled to the base of the triode Q3 through the capacitor C1, the signals are amplified through the Q3, and the shaped signals are sent to the main control chip U1 through the triode Q2 to be processed. Utilize triode Q3 to make signal amplification, conveniently adjust the magnification and promote its sensitivity, infrared receiving diode PD1 self receiving angle is 10 simultaneously, for receiving the 90 integrated infrared receiving tube of angle scope, greatly reduced the regional scope of reaction of mistake touching, and then reduce the emergence of the phenomenon of missense trigger.
Drawings
Fig. 1 is a block diagram of a non-contact infrared sensing circuit according to the present invention.
Fig. 2 is a schematic diagram of a master control circuit of the present invention.
Fig. 3 is a schematic diagram of the power supply circuit of the present invention.
Fig. 4 is a schematic diagram of the transmitting circuit of the present invention.
Fig. 5 is a schematic diagram of the receiving circuit of the present invention.
Fig. 6 is a schematic diagram of the key control circuit of the present invention.
Fig. 7 is a schematic diagram of the circuit of the indicator light of the present invention.
Fig. 8 is a schematic diagram of the motor control circuit of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
referring to fig. 1-8, a non-contact infrared sensing circuit includes a main control module 10, a power supply module 20, a transmitting module 30, a receiving module 40, a key control module 50, an indicator light module 60, and a motor control module 70.
The transmitting module 30, the receiving module 40, the indicator light module 60 and the motor control module 70 are connected with the main control module 10. The power supply module 20 is connected to the main control module 10 through the key control module 50.
In this embodiment, the main control module 10 includes a main control chip U1, and an AD1 pin of the main control chip U1 is connected to the power supply module 20.
The power supply module 20 comprises a power supply circuit, the power supply circuit comprises a power supply connector J2 and a power supply chip U2, the power supply connector J2 is connected with an AD1 pin of the main control chip U1 and a Vin pin of the power supply chip U2 respectively, a grounding capacitor C4 is arranged between the power supply connector J2 and the AD1 pin, and a ground capacitor C5 is arranged on a Vout pin of the power supply chip U2.
The emitting module 30 comprises an emitting circuit, the emitting circuit comprises an infrared emitting tube D2 and a triode Q4, a power supply connector J2 is connected with the positive electrode of the infrared emitting tube D2, the negative electrode of the infrared emitting tube D2 is connected with the collector of the triode Q4, the RXD pin of the main control chip U1 is connected with the base of the triode Q4, and the emitter of the triode Q4 is grounded.
The receiving module 40 comprises a receiving circuit, the receiving circuit comprises an infrared receiving diode PD1, a triode Q1, a triode Q2, a triode Q3, a triode Q5, a capacitor C1 and an adjusting resistor R10, the power supply module is respectively connected with the negative electrode of the infrared receiving diode PD1, the collector of the triode Q1, the base of the triode Q2 and the collector of the triode Q3, one end of the capacitor C1 and one end of the adjusting resistor R10, the positive electrode of the infrared receiving diode PD1 is connected with the base of the triode Q1, the emitter of the triode Q1 is respectively connected with the other end of the capacitor C1, the other end of the adjusting resistor R10 and the collector of the triode Q5, one end of the capacitor C1 is connected with the base of the triode Q3, and the main control module 10 is.
The receiving angle of the infrared receiving diode PD1 is 10 degrees, and compared with an integrated infrared receiving tube with a receiving angle range of 90 degrees, the receiving angle range greatly reduces the area range of false touch reaction, and further reduces the occurrence of false touch triggering.
Meanwhile, the infrared signal received by the infrared receiving diode PD1 can change the strength of the signal by adjusting the resistor R10, and the distance adjustment of the sensing distance can be realized. Meanwhile, the infrared receiving diode PD1 is conducted after receiving infrared pulse light reflected by foreign objects, the base current of the triode Q1 and the triode Q1 are conducted, signals are coupled to the base of the triode Q3 through the capacitor C1, the signals are amplified through the Q3, and the shaped signals are sent to the main control chip U1 through the triode Q2 to be processed. The triode Q3 is used for signal amplification, so that the amplification factor is conveniently adjusted to improve the sensitivity of the amplifier.
In this embodiment, the infrared receiving diode PD1 may also be replaced by an infrared receiving triode, which may further increase the sensing distance.
The triode Q5 is controlled by the power supply of the receiving circuit, and can close the power supply of the amplifying circuit part when the signal is not required to be received, thereby achieving the purpose of saving electric quantity. Because the amplification factor of the amplifying circuit is fixed, the received infrared signals are consistent in strength, the induction distances to different receiving tubes are consistent, the error is not more than 1cm, and the maximum induction distance can reach 10 cm. The infrared transmitting and receiving circuit has no special requirements for infrared tubes, triodes and the like, and is convenient to produce and stable in sensing distance.
The KEY control module 50 comprises a KEY control circuit, the KEY control circuit comprises a switch S1 and a switch S2, one end of the switch S1 is connected with a KEY1 pin of the main control chip U1, the other end of the switch S1 is grounded, one end of the switch S2 is connected with a power supply connector J2, and the other end of the switch S2 is respectively connected with a KEY2 pin of the main control chip U1, a KEY3 pin of the main control chip U1 and an EN pin of the power supply chip U2.
The indicator light module 60 comprises an indicator light circuit, the indicator light circuit comprises a RED indicator light D1 and a GREEN indicator light D2, the indicator light D1 is connected with the RED pin of the main control chip U1, and the indicator light D2 is connected with the GREEN pin of the main control chip U1.
Specifically, the indication circuit and the key circuit form a man-machine interface, the indication is that D1 and D3 indicate the state of the circuit board, D1 is a red LED, and D3 is a green LED. The key circuit mainly comprises a switch S1 and a switch S2 to realize the control of the circuit. When the computer is started, the S2 key is pressed, the power supply chip U2 is enabled to power on the main control chip U1, and the main control chip U1 controls the D3 indicator lamp to light a green lamp, so that the circuit board starts to work. When the circuit does not need to work, the long-safety switch S1 is used for two seconds, and the main control chip U1 enters a dormant state, so that the purpose of saving power of the system is achieved. Depressing switch S2 again may initiate circuit operation.
The motor control module 70 comprises a motor control circuit, and the motor control circuit comprises a MOS transistor Q6 and an interface J1 which are sequentially connected with a PWM2 pin of the main control chip U1. The motor control circuit mainly controls a direct current motor through an interface J1 by an MOS tube Q6, when a master control U1 sends a high level signal, the MOS tube Q6 is conducted, power is supplied to the motor through J1, and the motor starts corresponding actions. When the time of the electric appliance is up, the MOS tube Q6 is closed, the motor is powered off, and the operation is stopped.
In order to make the whole circuit structure more stable, the technical scheme adds a protective resistor or a diode in the circuit.
The utility model provides a non-contact infrared induction circuit, receiving module includes receiving circuit, receiving circuit includes infrared receiving diode PD1, triode Q1, triode Q2, triode Q3, triode Q5, electric capacity C1 and adjusting resistance R10, power module connects infrared receiving diode PD1 negative pole respectively, triode Q1 collecting electrode, triode Q2 base, triode Q3 collecting electrode, electric capacity C1 one end, adjusting resistance R10 one end, infrared receiving diode PD1 is anodal to be connected with triode Q1 base, electric capacity C1 other end is connected respectively to triode Q1's emission level, the adjusting resistance R10 other end, triode Q5 collecting electrode, master control C1 one end is connected with triode Q3 base, triode Q2 collecting electrode and triode Q5 base are connected respectively to the module. The infrared signal received by the infrared receiving diode PD1 can change the strength of the signal by adjusting the resistor R10, and the distance adjustment of the sensing distance can be realized. Meanwhile, the infrared receiving diode PD1 is conducted after receiving infrared pulse light reflected by foreign objects, the base current of the triode Q1 and the triode Q1 are conducted, signals are coupled to the base of the triode Q3 through the capacitor C1, the signals are amplified through the Q3, and the shaped signals are sent to the main control chip U1 through the triode Q2 to be processed. Utilize triode Q3 to make signal amplification, conveniently adjust the magnification and promote its sensitivity, infrared receiving diode PD1 self receiving angle is 10 simultaneously, for receiving the 90 integrated infrared receiving tube of angle scope, greatly reduced the regional scope of reaction of mistake touching, and then reduce the emergence of the phenomenon of missense trigger.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A non-contact infrared induction circuit comprises a main control module, and a power supply module, a transmitting module and a receiving module which are connected with the main control module, the receiving module is characterized by comprising a receiving circuit, the receiving circuit comprises an infrared receiving diode PD1, a triode Q1, a triode Q2, a triode Q3, a triode Q5, a capacitor C1 and an adjusting resistor R10, the power supply module is respectively connected with the cathode of the infrared receiving diode PD1, the collector of the triode Q1, the base of the triode Q2, the collector of the triode Q3, one end of the capacitor C1 and one end of the adjusting resistor R10, the anode of the infrared receiving diode PD1 is connected with the base electrode of a triode Q1, the emission stage of the triode Q1 is respectively connected with the other end of a capacitor C1, the other end of an adjusting resistor R10 and the collector of a triode Q5, one end of the capacitor C1 is connected with the base electrode of the triode Q3, and the master control module is respectively connected with the collector electrode of the triode Q2 and the base electrode of the triode Q5.
2. The non-contact infrared sensing circuit as claimed in claim 1, wherein the main control module comprises a main control chip U1, and an AD1 pin of the main control chip U1 is connected to the power supply module.
3. The non-contact infrared sensing circuit as claimed in claim 2, wherein the power supply module comprises a power supply circuit, the power supply circuit comprises a power supply connector J2 and a power chip U2, the power supply connector J2 is respectively connected to an AD1 pin of the main control chip U1 and a Vin pin of the power chip U2, a ground capacitor C4 is arranged between the power supply connector J2 and the Vin pin, and a ground capacitor C5 is arranged at a Vout pin of the power chip U2.
4. The non-contact infrared induction circuit as claimed in claim 3, wherein the emission module comprises an emission circuit, the emission circuit comprises an infrared emission tube D2 and a transistor Q4, the power supply connector J2 is connected with the positive electrode of the infrared emission tube D2, the negative electrode of the infrared emission tube D2 is connected with the collector of a transistor Q4, the RXD pin of the main control chip U1 is connected with the base of a transistor Q4, and the emitter of the transistor Q4 is grounded.
5. The non-contact infrared sensing circuit as claimed in claim 4, further comprising a KEY control module, wherein the KEY control module comprises a KEY control circuit, the KEY control circuit comprises a switch S1 and a switch S2, one end of the switch S1 is connected to the KEY1 pin of the main control chip U1, the other end of the switch S1 is grounded, one end of the switch S2 is connected to the power supply connector J2, and the other end of the switch S2 is respectively connected to the KEY2 pin of the main control chip U1, the KEY3 pin of the main control chip U1, and the EN pin of the power supply chip U2.
6. The non-contact infrared induction circuit as claimed in claim 4, further comprising an indicator light module, wherein the indicator light module comprises an indicator light circuit, the indicator light circuit comprises a RED indicator light D1 and a GREEN indicator light D2, the indicator light D1 is connected with the RED pin of the main control chip U1, and the indicator light D2 is connected with the GREEN pin of the main control chip U1.
7. The non-contact infrared induction circuit as claimed in claim 4, further comprising a motor control module, wherein the motor control module comprises a motor control circuit, and the motor control circuit comprises a MOS transistor Q6 and an interface J1 which are sequentially connected with a PWM2 pin of a main control chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022474657.5U CN213240869U (en) | 2020-10-30 | 2020-10-30 | Non-contact infrared induction circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022474657.5U CN213240869U (en) | 2020-10-30 | 2020-10-30 | Non-contact infrared induction circuit |
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| CN213240869U true CN213240869U (en) | 2021-05-18 |
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| CN202022474657.5U Active CN213240869U (en) | 2020-10-30 | 2020-10-30 | Non-contact infrared induction circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023206728A1 (en) * | 2022-04-27 | 2023-11-02 | 漳州松霖智能家居有限公司 | Infrared sensor and infrared sensing window |
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2020
- 2020-10-30 CN CN202022474657.5U patent/CN213240869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023206728A1 (en) * | 2022-04-27 | 2023-11-02 | 漳州松霖智能家居有限公司 | Infrared sensor and infrared sensing window |
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