CN219831958U - Infrared emission learning circuit - Google Patents
Infrared emission learning circuit Download PDFInfo
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- CN219831958U CN219831958U CN202321033372.5U CN202321033372U CN219831958U CN 219831958 U CN219831958 U CN 219831958U CN 202321033372 U CN202321033372 U CN 202321033372U CN 219831958 U CN219831958 U CN 219831958U
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Abstract
The utility model provides an infrared emission learning circuit which comprises a primary signal amplifying circuit, a secondary signal amplifying circuit, an infrared emission driving circuit and an emission tube circuit, wherein a power supply is in power supply connection with the secondary signal amplifying circuit, the emission tube circuit and a main control MCU, the output end of the emission tube circuit is connected with the input end of the primary signal amplifying circuit, the output end of the primary signal amplifying circuit is connected with the input end of the secondary signal amplifying circuit, the output end of the secondary signal amplifying circuit is connected with the input end of the main control MCU, the output end of the main control MCU is connected with the input end of the secondary signal amplifying circuit and the input end of the infrared emission driving circuit, the output end of the infrared emission driving circuit is connected with the input end of the emission tube circuit, and a diode D3 is arranged in the emission tube circuit. The beneficial effects of the utility model are as follows: the wireless remote controller can learn the key code value of the original infrared remote controller of the infrared receiving device, and can control the corresponding infrared receiving device.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to an infrared emission learning circuit.
Background
If the 2.4G remote controller and the Bluetooth remote controller need to control the infrared receiving equipment, an infrared transmitting circuit is needed to be added in the remote controller, and if the original infrared code value of the remote controller of the infrared receiving equipment needs to be learned, the 2.4G remote controller and the Bluetooth remote controller can also control the equipment, and an infrared learning circuit is needed to be added in the remote controller. At present, MCU chips of a 2.4G remote controller and a Bluetooth remote controller in the market cannot directly drive a transmitting tube to transmit infrared signals, and cannot directly learn weak signals of the infrared signals.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides an infrared emission learning circuit which is arranged in a wireless remote controller, wherein a power supply and a main control MCU are arranged in the wireless remote controller, and the wireless remote controller can learn the key code value of the original infrared remote controller of the infrared receiving device through a primary signal amplifying circuit, a secondary signal amplifying circuit, an infrared emission driving circuit and an emission tube circuit which are mutually matched, so that the corresponding infrared receiving device can be controlled, and the problems that MCU chips of a 2.4G remote controller and a Bluetooth remote controller in the prior art cannot directly drive the emission tube to emit infrared signals and cannot directly learn weak signals of the infrared signals are solved.
The infrared emission learning circuit is arranged in a wireless remote controller, a power supply and a main control MCU are arranged in the wireless remote controller, the infrared emission learning circuit comprises a primary signal amplifying circuit, a secondary signal amplifying circuit, an infrared emission driving circuit and an emission tube circuit, the power supply is in power supply connection with the secondary signal amplifying circuit, the emission tube circuit and the main control MCU, the output end of the emission tube circuit is connected with the input end of the primary signal amplifying circuit, the output end of the primary signal amplifying circuit is connected with the input end of the secondary signal amplifying circuit, the output end of the secondary signal amplifying circuit is connected with the input end of the main control MCU, the output end of the main control MCU is connected with the input end of the secondary signal amplifying circuit and the input end of the infrared emission driving circuit, a diode D3 is arranged in the emission tube circuit, the diode D3 can receive infrared signals and generate reverse current to flow through the primary signal amplifying circuit and the main control MCU, the infrared signals can be analyzed and output to the infrared emission driving circuit, and the infrared signals can be analyzed and the infrared signals can be transmitted to the main control MCU.
The utility model is further improved, a protection resistor R15 and a filter capacitor C11 are also arranged in the transmitting tube circuit, wherein the positive electrode of the diode D3 is connected with one end of the filter capacitor C11 and the power supply, the negative electrode of the diode D3 is connected with one end of the protection resistor R15 and the input end of the primary signal amplifying circuit, the other end of the protection resistor R15 is connected with the output end of the infrared transmitting driving circuit, and the other end of the filter capacitor C11 is grounded.
The utility model further improves, the primary signal amplifying circuit comprises a triode Q1, a resistor R13 and a resistor R14, wherein the base electrode of the triode Q1 is connected with one end of the resistor R13, the other end of the resistor R13 is connected with the negative electrode of the diode D3, the emitting electrode of the triode Q1 is connected with the power supply, the collecting electrode of the triode Q1 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the input end of the secondary signal amplifying circuit.
The utility model further improves, the secondary signal amplifying circuit comprises a triode Q3, a resistor R11, a resistor R16 and a resistor R17, wherein the base electrode of the triode Q3 is connected with one end of the resistor R17, the other end of the resistor R17 is connected with the other end of the resistor R14 and one end of the resistor R16, the emitting electrode of the triode Q3 is connected with the other end of the resistor R16 and the output end of the main control MCU, the collecting electrode of the triode Q3 is connected with the input end of the main control MCU and one end of the resistor R11, and the other end of the resistor R11 is connected with the power supply.
The infrared emission driving circuit comprises a triode Q5, a resistor R18 and a resistor R19, wherein the base electrode of the triode Q5 is connected with one end of the resistor R18 and one end of the resistor R19, the other end of the resistor R18 is connected with the output end of the main control MCU, the emitting electrode of the triode Q3 and the other end of the resistor R19 are grounded, and the collecting electrode of the triode Q5 is connected with the other end of the protection resistor R15.
According to the utility model, the resistance value of the protection resistor R15 is 2.2 omega, and the capacitance value of the filter capacitor C11 is 10uF.
The utility model is further improved, and the resistance value of the resistor R13 is 3.9KΩ.
According to the utility model, the resistance of the resistor R11 is 10KΩ, the resistance of the resistor R16 is 1KΩ, and the resistance of the resistor R17 is 100 Ω.
According to the utility model, the resistance value of the resistor R18 is 1KΩ, and the resistance value of the resistor R19 is 10KΩ.
The utility model is further improved, and the master control MCU model is RTL8752DJF.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides an infrared emission learning circuit sets up in wireless remote controller, be equipped with power supply and main control MCU in the wireless remote controller, through the one-level signal amplification circuit of mutually supporting, second grade signal amplification circuit, infrared emission drive circuit and transmitting tube circuit, diode D3 in the transmitting tube circuit can receive infrared signal and produce reverse current and pass through the one-level signal amplification circuit and output to main control MCU after the amplification of second grade signal amplification circuit and analyze and accomplish infrared emission study, infrared emission drive circuit can receive main control MCU's control signal and drive transmitting tube circuit and transmit infrared signal, can make wireless remote controller learn the original infrared remote controller button code value of infrared receiver equipment, can control corresponding infrared receiver equipment, make user experience more convenient, its stability and electrical property index can satisfy 2.4G remote controller, the bluetooth remote controller carries out the user demand of infrared emission learning under all kinds of infrared receiver equipment application scenes, and infrared learning circuit is very low in the electric current of operating condition, do not consume electric quantity when not operating condition, therefore infrared learning circuit can not influence the life and life of bluetooth remote controller and during the use, the current of the current is very low, can not directly handle the infrared remote controller to the infrared receiver chip is not carried out the infrared remote controller and the infrared receiver has been processed to the direct remote controller with the infrared receiver of current No. 2.4G remote controller.
Drawings
In order to more clearly illustrate the utility model or the solutions of the prior art, a brief description will be given below of the drawings used in the description of the embodiments or the prior art, it being obvious that the drawings in the description below are some embodiments of the utility model and that other drawings can be obtained from them without the inventive effort of a person skilled in the art.
Fig. 1 is a circuit diagram of an infrared emission learning circuit according to the present utility model.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1, the infrared emission learning circuit provided by the utility model is arranged in a wireless remote controller, a power supply and a main control MCU are arranged in the wireless remote controller, the wireless remote controller comprises a primary signal amplifying circuit, a secondary signal amplifying circuit, an infrared emission driving circuit and an emission tube circuit, the power supply is in power supply connection with the secondary signal amplifying circuit, the emission tube circuit and the main control MCU, the output end of the emission tube circuit is connected with the input end of the primary signal amplifying circuit, the output end of the primary signal amplifying circuit is connected with the input end of the secondary signal amplifying circuit, the output end of the secondary signal amplifying circuit is connected with the input end of the main control MCU, the output end of the main control MCU is connected with the input end of the secondary signal amplifying circuit and the input end of the infrared emission driving circuit, and a diode D3 is arranged in the emission tube circuit. Wherein, the master control MCU model is RTL8752DJF. In this embodiment, the diode D3 in the transmitting tube circuit can receive the infrared signal and generate the reverse current, and after being amplified by the primary signal amplifying circuit and the secondary signal amplifying circuit, the reverse current is output to the main control MCU to analyze and store to complete the infrared emission learning, and the infrared emission driving circuit can receive the control signal of the main control MCU and drive the transmitting tube circuit to emit the infrared signal, so that the wireless remote controller can learn the key code value of the original infrared remote controller of the infrared receiving device, and the corresponding infrared receiving device can be controlled, so that the user experience is more convenient.
As shown in fig. 1, a protection resistor R15 and a filter capacitor C11 are further arranged in the transmitting tube circuit, wherein the anode of the diode D3 is connected with one end of the filter capacitor C11 and a power supply, the cathode of the diode D3 is connected with one end of the protection resistor R15 and the input end of the primary signal amplifying circuit, the other end of the protection resistor R15 is connected with the output end of the infrared emission driving circuit, and the other end of the filter capacitor C11 is grounded; the resistance of the protection resistor R15 is 2.2Ω, and the capacitance of the filter capacitor C11 is 10uF. In this embodiment, the transmitting tube circuit is used for receiving the external infrared signal, generating reverse current and transmitting the infrared signal.
As shown in fig. 1, the primary signal amplifying circuit comprises a triode Q1, a resistor R13 and a resistor R14, wherein the base electrode of the triode Q1 is connected with one end of the resistor R13, the other end of the resistor R13 is connected with the cathode of a diode D3, the emitter electrode of the triode Q1 is connected with a power supply, the collector electrode of the triode Q1 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the input end of the secondary signal amplifying circuit; wherein, the resistance value of the resistor R13 is 3.9KΩ. In this embodiment, the primary signal amplifying circuit is used to amplify the reverse current generated by the transmitting tube circuit.
As shown in fig. 1, the secondary signal amplifying circuit comprises a triode Q3, a resistor R11, a resistor R16 and a resistor R17, wherein the base electrode of the triode Q3 is connected with one end of the resistor R17, the other end of the resistor R17 is connected with the other end of the resistor R14 and one end of the resistor R16, the emitter electrode of the triode Q3 is connected with the other end of the resistor R16 and the output end of the main control MCU, the collector electrode of the triode Q3 is connected with the input end of the main control MCU and one end of the resistor R11, and the other end of the resistor R11 is connected with a power supply; the resistance of the resistor R11 is 10kΩ, the resistance of the resistor R16 is 1kΩ, and the resistance of the resistor R17 is 100deg.Ω. In this embodiment, the secondary signal amplifying circuit is used to amplify the reverse current generated by the transmitting tube circuit again.
As shown in fig. 1, the infrared emission driving circuit comprises a triode Q5, a resistor R18 and a resistor R19, wherein the base electrode of the triode Q5 is connected with one end of the resistor R18 and one end of the resistor R19, the other end of the resistor R18 is connected with the output end of the main control MCU, the emitter electrode of the triode Q3 and the other end of the resistor R19 are grounded, and the collector electrode of the triode Q5 is connected with the other end of the protection resistor R15; the resistance of the resistor R18 is 1kΩ, and the resistance of the resistor R19 is 10kΩ. In this embodiment, the infrared emission driving circuit is used to drive the emission tube circuit to emit an infrared signal.
In this embodiment, when infrared learning is required by the 2.4G wireless remote controller or the bluetooth wireless remote controller, the master control MCU provides a pull-down level (ir_study_ctrl signal pin) for the secondary signal amplifying circuit, during infrared learning, the transmitting tube of the learned remote controller is aligned to the diode D3 of the wireless remote controller by a distance of about 3-5CM, the key of the learned remote controller is pressed, the learned remote controller emits an infrared light signal, when the infrared light signal irradiates on the diode D3, the diode D3 generates reverse current, the primary signal amplifying circuit composed of the resistor R13 and the triode Q1 amplifies the primary signal, then the secondary signal amplifying circuit composed of the triode Q3, the resistor R17 and the resistor R11 amplifies the signal to a voltage signal readable by the master control MCU, and then the ir_study signal pin transmits the amplified signal to the master control MCU for inquiry and detection; the infrared waveform detected by the main control MCU is stored in a coding format corresponding to decomposition. When the remote controller does not need infrared learning, the main control MCU pulls the signal pin of the secondary signal amplifying circuit IR_STUDY_CTRL to a high level, and the infrared learning circuit does not work, so that the wireless remote controller keeps a low power consumption state, does not consume battery power, and prolongs the service life and the service time of the remote controller.
When the 2.4G wireless remote controller or the Bluetooth wireless remote controller needs to emit infrared signals, the main control MCU transmits infrared waveform signals to an infrared emission driving circuit consisting of a resistor R18, a resistor R19 and a three-level tube Q5 through an IR_SEND signal pin, and the infrared emission driving circuit drives the emission tube circuit to emit the infrared waveform signals to control infrared receiving equipment, wherein the resistor R15 is a current limiting resistor of the diode D3 and is used for protecting the diode D3 and preventing the diode D3 from being damaged due to overlarge current.
As can be seen from the above, the utility model provides an infrared emission learning circuit, which is arranged in a wireless remote controller, wherein a power supply and a main control MCU are arranged in the wireless remote controller, through a primary signal amplifying circuit, a secondary signal amplifying circuit, an infrared emission driving circuit and an emission tube circuit which are mutually matched, a diode D3 in the emission tube circuit can receive infrared signals and generate reverse current, the reverse current is amplified by the primary signal amplifying circuit and the secondary signal amplifying circuit and then is output to the main control MCU to analyze and store the signals to finish infrared emission learning, the infrared emission driving circuit can receive control signals of the main control MCU and drive the emission tube circuit to emit infrared signals, the wireless remote controller can learn key code values of the original infrared remote controller of the infrared receiving device, the corresponding infrared receiving device can be controlled, the user experience is more convenient, the stability and the electrical performance index of the infrared remote controller can meet the use requirements of infrared emission learning of the 2.4G remote controller and the bluetooth remote controller under various application scenes of the infrared receiving device, the current of the infrared learning circuit in the working state is very low, the infrared learning circuit is not consumed in the working state, the infrared learning circuit can not influence the service life of the infrared learning circuit and the service life of the infrared remote controller and the current of the infrared remote controller can not influence the service life of the infrared remote controller and the current of the infrared remote controller can directly process the infrared remote controller to the infrared remote controller, and the infrared remote controller can directly emit signals by the remote controller with the current to the remote controller of the current chip 2.4.
The above embodiments are preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, which includes but is not limited to the embodiments, and equivalent modifications according to the present utility model are within the scope of the present utility model.
Claims (10)
1. An infrared emission learning circuit is arranged in a wireless remote controller, and a power supply and a main control MCU are arranged in the wireless remote controller, and the infrared emission learning circuit is characterized in that: the infrared transmitting device comprises a primary signal amplifying circuit, a secondary signal amplifying circuit, an infrared transmitting driving circuit and a transmitting tube circuit, wherein a power supply is in power supply connection with the secondary signal amplifying circuit, the transmitting tube circuit is in power supply connection with the main control MCU, the output end of the transmitting tube circuit is connected with the input end of the primary signal amplifying circuit, the output end of the primary signal amplifying circuit is connected with the input end of the secondary signal amplifying circuit, the output end of the secondary signal amplifying circuit is connected with the input end of the main control MCU, the output end of the main control MCU is connected with the input end of the secondary signal amplifying circuit, the output end of the infrared transmitting driving circuit is connected with the input end of the transmitting tube circuit, a diode D3 is arranged in the transmitting tube circuit, the diode D3 can receive infrared signals and generate reverse current to flow through the primary signal amplifying circuit and the secondary signal amplifying circuit, the output to the main control MCU is used for analyzing and storing infrared transmitting learning, and the infrared transmitting driving circuit can receive and control the infrared signals to transmit and drive the infrared signals.
2. An infrared emission learning circuit as claimed in claim 1, wherein: the emitting tube circuit is internally provided with a protection resistor R15 and a filter capacitor C11, wherein the anode of the diode D3 is connected with one end of the filter capacitor C11 and the power supply, the cathode of the diode D3 is connected with one end of the protection resistor R15 and the input end of the primary signal amplifying circuit, the other end of the protection resistor R15 is connected with the output end of the infrared emission driving circuit, and the other end of the filter capacitor C11 is grounded.
3. An infrared emission learning circuit as claimed in claim 2, wherein: the primary signal amplifying circuit comprises a triode Q1, a resistor R13 and a resistor R14, wherein the base electrode of the triode Q1 is connected with one end of the resistor R13, the other end of the resistor R13 is connected with the negative electrode of the diode D3, the emitting electrode of the triode Q1 is connected with the power supply, the collecting electrode of the triode Q1 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the input end of the secondary signal amplifying circuit.
4. An infrared emission learning circuit as claimed in claim 3, wherein: the secondary signal amplifying circuit comprises a triode Q3, a resistor R11, a resistor R16 and a resistor R17, wherein the base electrode of the triode Q3 is connected with one end of the resistor R17, the other end of the resistor R17 is connected with the other end of the resistor R14 and one end of the resistor R16, the emitting electrode of the triode Q3 is connected with the other end of the resistor R16 and the output end of the main control MCU, the collecting electrode of the triode Q3 is connected with the input end of the main control MCU and one end of the resistor R11, and the other end of the resistor R11 is connected with the power supply.
5. An infrared emission learning circuit as defined in claim 4, wherein: the infrared emission driving circuit comprises a triode Q5, a resistor R18 and a resistor R19, wherein the base electrode of the triode Q5 is connected with one end of the resistor R18 and one end of the resistor R19, the other end of the resistor R18 is connected with the output end of the main control MCU, the emitting electrode of the triode Q3 and the other end of the resistor R19 are grounded, and the collecting electrode of the triode Q5 is connected with the other end of the protection resistor R15.
6. An infrared emission learning circuit as defined in claim 5, wherein: the resistance value of the protection resistor R15 is 2.2 omega, and the capacitance value of the filter capacitor C11 is 10uF.
7. An infrared emission learning circuit as defined in claim 6, wherein: the resistance value of the resistor R13 is 3.9KΩ.
8. The infrared emission learning circuit of claim 7 wherein: the resistance value of the resistor R11 is 10KΩ, the resistance value of the resistor R16 is 1KΩ, and the resistance value of the resistor R17 is 100 Ω.
9. An infrared emission learning circuit as claimed in claim 8, wherein: the resistance value of the resistor R18 is 1KΩ, and the resistance value of the resistor R19 is 10KΩ.
10. An infrared emission learning circuit as claimed in claim 9, wherein: the master control MCU model is RTL8752DJF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321033372.5U CN219831958U (en) | 2023-05-04 | 2023-05-04 | Infrared emission learning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321033372.5U CN219831958U (en) | 2023-05-04 | 2023-05-04 | Infrared emission learning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219831958U true CN219831958U (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321033372.5U Active CN219831958U (en) | 2023-05-04 | 2023-05-04 | Infrared emission learning circuit |
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| Country | Link |
|---|---|
| CN (1) | CN219831958U (en) |
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2023
- 2023-05-04 CN CN202321033372.5U patent/CN219831958U/en active Active
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