CN218848901U - Infrared receiving circuit, infrared control circuit and induction equipment - Google Patents
Infrared receiving circuit, infrared control circuit and induction equipment Download PDFInfo
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- CN218848901U CN218848901U CN202222734752.3U CN202222734752U CN218848901U CN 218848901 U CN218848901 U CN 218848901U CN 202222734752 U CN202222734752 U CN 202222734752U CN 218848901 U CN218848901 U CN 218848901U
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- 230000006698 induction Effects 0.000 title claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 42
- 208000035473 Communicable disease Diseases 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000035474 group of disease Diseases 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The application relates to the technical field of infrared remote control, in particular to an infrared receiving circuit, an infrared control circuit and induction equipment, and solves the problem that an infrared receiving end cannot accurately receive low-power-consumption infrared signals in the prior art. The low-power consumption infrared signal received by the infrared receiving module is transmitted to the first triode so as to drive the first triode and enable the first triode to be in a conducting state. Because the collecting electrode of first electric capacity and first triode is connected, when first triode was in the off-state, first electric capacity was charged by the power, and therefore when first triode became the conducting state, the one end that first electric capacity and second triode were connected can form a negative pulse for the second triode becomes the off-state, makes then and switches on between processing circuit and the power. The infrared receiving circuit amplifies and outputs the low-current infrared signals received by the infrared receiving module through the triode so that the processing circuit can accurately distinguish whether the infrared signals exist or not.
Description
Technical Field
The application relates to the technical field of infrared remote control, in particular to an infrared receiving circuit, an infrared control circuit and induction equipment.
Background
Infectious diseases are a group of diseases caused by various pathogens that can be transmitted from person to person, animal to animal or human to animal. Infectious diseases can be generally transmitted by direct contact with infected individuals or objects contaminated by infected persons, as well as by air transmission, water transmission, food transmission, and the like. If one of the links can be completely cut off, the occurrence and the prevalence of the infectious diseases can be prevented. The weak links of various infectious diseases are different. It should be fully used in prevention. Measures should be taken in other links besides the leading link, so that various infectious diseases can be prevented better.
In public places, in order to avoid cross infection of infectious diseases caused by contact, contactless products such as hand disinfectors, automatic hand washing machines and the like are often used, and the infrared technology is mostly used for data transmission of the contactless products. However, the infrared power consumption is mainly embodied in the transmitting tube, the maximum current of the transmitting tube can reach dozens of milliamperes, the transmitting tube can work for 10 hours if the transmitting tube transmits 50mA, and the used lithium battery is 500mAh, but the service life of a common infrared remote controller and the like is basically more than 1 year, the service life of infrared triggering electronic equipment is more than 7 days, so that the transmitting power consumption needs to be reduced to improve the service life of a product, and after the infrared transmitting power consumption is reduced, an infrared signal is very weak, so that an infrared receiving end cannot accurately receive the low-power-consumption infrared signal.
SUMMERY OF THE UTILITY MODEL
The application provides an infrared receiving circuit, an infrared control circuit and induction equipment to the problem that the infrared receiving end can't accurately receive low-power consumption infrared signal among the prior art.
In a first aspect, the present application provides an infrared receiving circuit, which includes a power supply, an infrared receiving module, a first triode, a first capacitor, and a second triode; the one end of infrared receiving module with the power is connected, infrared receiving module's the other end with the base of first triode is connected, the projecting pole ground connection of first triode, the collecting electrode of first triode with the one end of first electric capacity is connected, the one end of first electric capacity still with the power is connected, the other end of first electric capacity with the base of second triode is connected, the projecting pole ground connection of second triode, the collecting electrode of second triode respectively with processing circuit and the power is connected.
In the above embodiment, the low power consumption infrared signal received by the infrared receiving module is transmitted to the first triode to drive the first triode, so that the first triode is in a conducting state, because one end of the first capacitor is connected with the power supply and is connected with the collector of the first triode, when the first triode is in a cut-off state, the first capacitor is charged by the power supply, and when the infrared receiving module receives the low power consumption infrared signal, the first triode is changed from the cut-off state to the conducting state, based on the characteristics of the capacitor, one end of the first capacitor connected with the second triode can form a negative pulse, so that the second triode is changed from the conducting state to the cut-off state, and then the processing circuit respectively connected with the collector of the second triode and the power supply are connected and conducted, so that the processing circuit receives the signal. The infrared receiving circuit amplifies and outputs the low-current infrared signals received by the infrared receiving module through the triode so that the processing circuit can accurately distinguish whether the infrared signals exist or not.
According to an embodiment of the present application, optionally, in the above infrared receiving circuit, the infrared receiving module includes an infrared receiver;
one end of the infrared receiver is connected with the power supply, and the other end of the infrared receiver is connected with the base electrode of the first triode.
According to an embodiment of the present application, optionally, in the above infrared receiving circuit, the infrared receiver is an infrared phototriode or an infrared photodiode.
According to an embodiment of the present application, optionally, in the infrared receiving circuit, the infrared receiving module further includes a second capacitor;
and the infrared receiver is connected with the base electrode of the first triode through the second capacitor.
According to an embodiment of the present application, optionally, in the infrared receiving circuit, the infrared receiving module further includes a follower;
the infrared receiver is connected with the base electrode of the first triode through the follower.
According to an embodiment of the present application, optionally, in the infrared receiving circuit, the infrared receiving module further includes a second capacitor and a follower;
one end of the infrared receiver is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the input end of the follower, and the output end of the follower is connected with the base electrode of the first triode.
According to an embodiment of the present application, optionally, in the infrared receiving circuit, the first triode and the second triode are both NPN triodes.
According to an embodiment of the present application, optionally, in the infrared receiving circuit, the infrared receiving circuit further includes a diode;
and the collector of the second triode is connected with the anode of the diode, and the cathode of the diode is connected with the processing circuit.
In a second aspect, the present application further provides an infrared control circuit, which includes an infrared emitting circuit, an infrared receiving circuit, and a processing circuit;
the infrared transmitting circuit is used for transmitting an infrared signal;
the infrared receiving circuit is used for receiving the infrared signals, converting the infrared signals into electric signals and sending the electric signals to the processing circuit.
In a third aspect, the present application further provides an induction device, which includes a device body and the above-mentioned infrared control circuit, where the infrared control circuit is disposed in the device body.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
according to the infrared receiving circuit, the infrared control circuit and the induction device, the infrared receiving circuit comprises a power supply, an infrared receiving module, a first triode, a first capacitor and a second triode; the one end of infrared receiving module with the power is connected, the other end of infrared receiving module with the base of first triode is connected, the projecting pole ground connection of first triode, the collecting electrode of first triode with the one end of first electric capacity is connected, the one end of first electric capacity still with the power is connected, the other end of first electric capacity with the base of second triode is connected, the projecting pole ground connection of second triode, the collecting electrode of second triode respectively with processing circuit and the power is connected. The low-power consumption infrared signal that infrared receiving module received is carried to first triode department, in order to drive first triode, make first triode be in the conducting state, because the one end and the power of first electric capacity are connected, and be connected with the collecting electrode of first triode, when first triode is in the off-state, first electric capacity is charged by the power, and when infrared receiving module received the low-power consumption infrared signal, first triode becomes the conducting state from the off-state, based on the characteristic of condenser, the one end that first electric capacity and second triode are connected can form a negative pulse, thereby make the second triode become the off-state from the conducting state, then make the processing circuit who is connected respectively with the collecting electrode of second triode and the connection between the power switch on, make processing circuit receive the signal. The infrared receiving circuit amplifies and outputs the low-current infrared signal received by the infrared receiving module through the triode so that the processing circuit can accurately distinguish whether the infrared signal exists or not.
Drawings
The present application will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
Fig. 1 is a circuit diagram of an infrared receiving circuit according to an embodiment of the present disclosure.
Fig. 2 is a circuit diagram of an infrared control circuit according to an embodiment of the present application.
In the drawings, like parts are designated with like reference numerals, and the drawings are not drawn to scale.
Detailed Description
The following detailed description will be provided with reference to the accompanying drawings and embodiments, so that how to apply the technical means to solve the technical problems and achieve the corresponding technical effects can be fully understood and implemented. The embodiments and various features in the embodiments of the present application can be combined with each other without conflict, and the formed technical solutions are all within the scope of protection of the present application.
The utility model provides an infrared receiving circuit, please refer to fig. 1, which comprises a power supply VCC, an infrared receiving module 100, a first triode Q1, a first capacitor C1 and a second triode Q2; one end of infrared receiving module 100 with the power VCC is connected, infrared receiving module 100's the other end with first triode Q1's base is connected, first triode Q1's projecting pole ground connection, first triode Q1's collecting electrode with first electric capacity C1's one end is connected, first electric capacity C1's one end still with the power VCC is connected, first electric capacity C1's the other end with second triode Q2's base is connected, second triode Q2's projecting pole ground connection, second triode Q2's collecting electrode respectively with processing circuit MCU and the power VCC connects.
The low-power-consumption transmitting tube is used, the intensity of a signal transmitted by the low-power-consumption transmitting tube is low, that is, the intensity of an infrared signal received by the infrared receiving module 100 is also low, the infrared signal received by the infrared receiving module 100 can drive the first triode Q1, when the three first triodes Q1 are conducted by signals, the A end voltage of the first capacitor C1 is instantly pulled down, due to the capacitance characteristic, the B end of the first capacitor C1 can form a negative pulse, so that the second triode Q2 is cut off, at the moment, the power supply VCC is connected with the processing circuit MCU, the signal of the power supply VCC can enter the processing circuit MCU, and the processing circuit receives the signal which detects the infrared signal.
The low power consumption infrared signal received by the infrared receiving module 100 is transmitted to the first triode Q1 to drive the first triode Q1, so that the first triode Q1 is in a conducting state, because one end of the first capacitor C1 is connected with the power VCC and is connected with the collector of the first triode Q1, when the first triode Q1 is in a cut-off state, the first capacitor C1 is charged by the power, and when the infrared receiving module 100 receives the low power consumption infrared signal, the first triode Q1 is changed from the cut-off state to the conducting state, based on the characteristics of the capacitor, one end of the first capacitor C1 connected with the second triode Q2 forms a negative pulse, so that the second triode Q2 is changed from the conducting state to the cut-off state, and then the connection between the processing circuit MCU respectively connected with the collector of the second triode Q2 and the power VCC is conducted, so that the processing circuit MCU receives the signal. The infrared receiving circuit amplifies and outputs the low-current infrared signal received by the infrared receiving module 100 through the triode, so that the processing circuit MCU can accurately distinguish whether the infrared signal exists.
The first triode Q1 and the second triode Q2 are both NPN triodes. The NPN triode has the functions of current amplification and switching, and can convert a weak electric signal into a signal with certain intensity. The base electrode of the first triode is connected with the output of the infrared receiving module 100, the emitting electrode of the first triode Q1 is grounded, the collecting electrode of the first triode Q1 is connected with the resistor R5 and the end A of the first capacitor C1, and when the first triode Q1 is conducted, the end A of the first capacitor C1 is grounded, so that the voltage is instantly reduced, and the end B is negative.
In the above infrared receiving circuit, the infrared receiving module 100 includes an infrared receiver D1, one end of the infrared receiver D1 is connected to the power VCC, and the other end of the infrared receiver D1 is connected to the base of the first triode Q1.
It is understood that the infrared receiver D1 may be an infrared phototransistor or an infrared photodiode. The infrared receiver can well receive the infrared light signal with the wavelength of 940nm transmitted by the infrared transmitting tube, and cannot receive light rays with other wavelengths, so that the receiving accuracy and sensitivity are ensured.
As a first embodiment, the infrared receiving module 100 further includes a second capacitor C2; the infrared receiver D1 is connected with the base electrode of the first triode Q1 through the second capacitor C2.
The second capacitor C2 is a direct current blocking capacitor, interference of natural light can be filtered, the natural light is embodied as direct current signal capacitor direct current blocking and alternating current, and therefore the interference of the natural light can be filtered, and in addition, the second capacitor C2 can also be coupled with a signal of the transmitting tube to be directly connected with the end B of the second capacitor C2.
As a second implementation manner, according to an embodiment of the present application, optionally, in the above infrared receiving circuit, the infrared receiving module 100 further includes a follower U1; the infrared receiver D1 is connected with the base electrode of the first triode Q1 through the follower U1.
In order to ensure that the signal received by the infrared receiver D1 can drive the first triode Q1, the signal received by the infrared receiver D1 can be transmitted to the follower U1, and the follower U1 follows the signal, so that the pulse signal can drive the first triode Q1.
As a third implementation manner, according to an embodiment of the present application, optionally, in the infrared receiving circuit, the infrared receiving module further includes a second capacitor C2 and a follower U1; one end of the infrared receiver D1 is connected with the first end of the second capacitor C2, the second end of the second capacitor C2 is connected with the input end of the follower U1, and the output end of the follower U1 is connected with the base electrode of the first triode Q1.
In the above embodiment, through second electric capacity C2 and follower U1, can filter and follow the infrared signal that infrared receiving module received, guarantee infrared signal's accuracy, guarantee simultaneously that infrared signal can drive first triode Q1, guarantee to carry out accurate discernment to low-power consumption infrared signal.
According to an embodiment of the present application, optionally, in the above infrared receiving circuit, the infrared receiving circuit further includes a diode D2; and the collector electrode of the second triode Q2 is connected with the anode of the diode D2, and the cathode of the diode D2 is connected with the processing circuit MCU.
When the infrared receiver D1 does not receive a signal, the infrared receiver D1 is in an off state or is provided with a signal with the same intensity by natural infrared light, at this time, the level of the point a of the second capacitor C2 is a low level or a direct current level, because of the characteristic that the second capacitor C2 blocks direct current, the level of the point B of the second capacitor C2 is pulled down by the resistor R2 at this time, and the output of the follower U1 is a low level, so the first triode Q1 is in an off state, the power VCC charges the first capacitor C1 through R5, the end a of the first capacitor C1 is a voltage VCC at this time, the VCC turns on the second triode Q2 through R7, the power VCC is grounded through R8, the diode D2 cannot be turned on, the processing circuit MCU cannot detect the level, that is, that the result is no infrared signal.
Referring to fig. 2, the present application further provides an infrared control circuit, which includes an infrared transmitting circuit, an infrared receiving circuit, and a processing circuit; the infrared transmitting circuit is used for transmitting an infrared signal; the infrared receiving circuit is used for receiving the infrared signals, converting the infrared signals into electric signals and sending the electric signals to the processing circuit. The infrared transmitting circuit comprises a low-power consumption infrared transmitting tube.
The application also provides induction equipment, including the equipment body and as above infrared control circuit, infrared control circuit set up in the equipment body.
Wherein, the induction equipment can be an induction hand washing machine, an induction disinfection machine and the like.
In summary, according to the infrared receiving circuit, the infrared control circuit and the induction device provided by the present application, the infrared receiving circuit includes a power supply, an infrared receiving module, a first triode, a first capacitor and a second triode; the one end of infrared receiving module with the power is connected, infrared receiving module's the other end with the base of first triode is connected, the projecting pole ground connection of first triode, the collecting electrode of first triode with the one end of first electric capacity is connected, the one end of first electric capacity still with the power is connected, the other end of first electric capacity with the base of second triode is connected, the projecting pole ground connection of second triode, the collecting electrode of second triode respectively with processing circuit and the power is connected. The low-power consumption infrared signal that infrared receiving module received is carried to first triode department, in order to drive first triode, make first triode be in the conducting state, because the one end and the power of first electric capacity are connected, and be connected with the collecting electrode of first triode, when first triode is in the off-state, first electric capacity is charged by the power, and when infrared receiving module received the low-power consumption infrared signal, first triode becomes the conducting state from the off-state, based on the characteristic of condenser, the one end that first electric capacity and second triode are connected can form a negative pulse, thereby make the second triode become the off-state from the conducting state, then make the processing circuit who is connected respectively with the collecting electrode of second triode and the connection between the power switch on, make processing circuit receive the signal. The infrared receiving circuit amplifies and outputs the low-current infrared signals received by the infrared receiving module through the triode so that the processing circuit can accurately distinguish whether the infrared signals exist or not.
In the embodiments provided in the present application, it should be understood that the disclosed infrared receiving circuit, infrared control circuit and sensing device may be implemented in other ways. The above-described embodiments of the infrared receiving circuit, the infrared control circuit, and the sensing device are merely illustrative.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
Claims (11)
1. An infrared receiving circuit is characterized by comprising a power supply, an infrared receiving module, a first triode, a first capacitor and a second triode;
the one end of infrared receiving module with the power is connected, the other end of infrared receiving module with the base of first triode is connected, the projecting pole ground connection of first triode, the collecting electrode of first triode with the one end of first electric capacity is connected, the one end of first electric capacity still with the power is connected, the other end of first electric capacity with the base of second triode is connected, the projecting pole ground connection of second triode, the collecting electrode of second triode respectively with processing circuit and the power is connected.
2. The infrared receiving circuit of claim 1, wherein the infrared receiving module comprises an infrared receiver;
one end of the infrared receiver is connected with the power supply, and the other end of the infrared receiver is connected with the base electrode of the first triode.
3. The infrared receiving circuit of claim 2, wherein the infrared receiver is an infrared phototransistor or an infrared photodiode.
4. The infrared receiving circuit according to claim 2, wherein the infrared receiving module further comprises a second capacitor;
and the infrared receiver is connected with the base electrode of the first triode through the second capacitor.
5. The infrared receiving circuit according to claim 2, wherein the infrared receiving module further comprises a follower;
and the infrared receiver is connected with the base electrode of the first triode through the follower.
6. The infrared receiving circuit of claim 2, wherein the infrared receiving module further comprises a second capacitor and a follower;
one end of the infrared receiver is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the input end of the follower, and the output end of the follower is connected with the base electrode of the first triode.
7. The infrared receiving circuit of claim 1, wherein the first transistor and the second transistor are both NPN transistors.
8. The infrared receiving circuit of claim 1, wherein the infrared receiving circuit further comprises a diode;
and the collector of the second triode is connected with the anode of the diode, and the cathode of the diode is connected with the processing circuit.
9. An infrared control circuit comprising an infrared transmitting circuit, an infrared receiving circuit as claimed in any one of claims 1 to 8, and a processing circuit;
the infrared transmitting circuit is used for transmitting an infrared signal;
the infrared receiving circuit is used for receiving the infrared signals, converting the infrared signals into electric signals and sending the electric signals to the processing circuit.
10. The infrared control circuit of claim 9, wherein the infrared emission circuit comprises a low power consumption infrared emission tube.
11. An induction device, comprising a device body and the infrared control circuit of claim 9, the infrared control circuit being disposed in the device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222734752.3U CN218848901U (en) | 2022-10-14 | 2022-10-14 | Infrared receiving circuit, infrared control circuit and induction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222734752.3U CN218848901U (en) | 2022-10-14 | 2022-10-14 | Infrared receiving circuit, infrared control circuit and induction equipment |
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| Publication Number | Publication Date |
|---|---|
| CN218848901U true CN218848901U (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222734752.3U Active CN218848901U (en) | 2022-10-14 | 2022-10-14 | Infrared receiving circuit, infrared control circuit and induction equipment |
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| CN (1) | CN218848901U (en) |
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- 2022-10-14 CN CN202222734752.3U patent/CN218848901U/en active Active
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