CN211403583U - Wireless remote control circuit - Google Patents
Wireless remote control circuit Download PDFInfo
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- CN211403583U CN211403583U CN201921796917.1U CN201921796917U CN211403583U CN 211403583 U CN211403583 U CN 211403583U CN 201921796917 U CN201921796917 U CN 201921796917U CN 211403583 U CN211403583 U CN 211403583U
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Abstract
The utility model relates to a wireless remote control circuit, which comprises a radio transmitting circuit and a radio receiving circuit matched with the radio transmitting circuit; the radio transmitting circuit loads the coding signal input by an external circuit from a coding input end on the generated high-frequency signal, and when the frequency matching of the high-frequency oscillating circuit and the radio transmitting circuit is successful, the high-frequency oscillating circuit outputs an analog signal to the analog-to-digital conversion circuit to be converted into a digital signal and outputs the digital signal to an external decoding circuit for decoding through a digital quantity output end; the first triode, the second triode and the resonator are high-frequency carrier frequency oscillators so as to carry the coded signals on the high-frequency signals generated by the first triode, the second triode and the resonator and transmit the coded signals to the aerial high-frequency oscillation circuit through the antenna for receiving; the circuit is simple, small in size, low in cost and wide in applicability.
Description
Technical Field
The utility model relates to a wireless remote control technical field, more specifically say, relate to a wireless remote control circuit.
Background
The radio remote control is remote control equipment for controlling various remote mechanisms by using radio signals, and a radio remote control system is generally divided into a transmitting part and a receiving part; however, most of the existing radio remote control circuits have complex circuits and large volumes, and can not meet the use requirements of people.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, it is simple to provide a circuit, small wireless remote control circuit.
The utility model provides a technical scheme that its technical problem adopted is:
constructing a wireless remote control circuit comprising a radio transmission circuit and a radio reception circuit matched with the radio transmission circuit; the radio receiving circuit comprises a high-frequency oscillation circuit and an analog-to-digital conversion circuit, wherein the oscillation frequency of the high-frequency oscillation circuit is consistent with the transmission frequency of the radio transmitting circuit, and the analog-to-digital conversion circuit is used for converting an analog signal output after the high-frequency oscillation circuit and the radio transmitting circuit are successfully matched into a digital signal;
the radio transmission circuit comprises a first triode, a second triode and a resonator; a collector of the first triode is connected with a first inductor and a first capacitor, the other end of the first inductor is connected with a second inductor, a first resistor and the resonator, and the other end of the first capacitor is connected with a transmitting antenna;
the other ends of the resonator and the first resistor are connected with the base electrode of the first triode, and the other end of the second inductor is connected with the positive electrode of a 12V power supply;
an emitting electrode of the first triode is connected with a collector electrode of the second triode, the other end of the first inductor is also connected with a second capacitor, and the other end of the second capacitor is connected with the collector electrode of the second triode;
and the base electrode of the second triode is connected with a second resistor, the other end of the second resistor is the coding input end of the radio transmitting circuit, and the emitting electrode of the second triode is connected with the negative electrode of the 12V power supply.
The utility model discloses a wireless remote control circuit, wherein, the high frequency oscillation circuit includes third triode and fourth triode; a base electrode of the third triode is connected with a third resistor and a third capacitor, the other end of the third capacitor is connected with a third inductor, a fourth capacitor and a receiving antenna, and the other ends of the third inductor and the fourth capacitor are grounded;
a collector of the third triode is connected with a fourth resistor, the other end of the fourth resistor is connected with the other end of the third resistor and is also connected with a fifth resistor, the other end of the fifth resistor is connected with the anode of a 5V power supply, and an emitter of the third triode is connected with the cathode of the 5V power supply;
a base electrode of the fourth triode is connected with a sixth resistor and a seventh resistor, the other end of the sixth resistor is connected with the anode of the 5V power supply, and the other end of the seventh resistor is connected with the cathode of the 5V power supply;
an emitter of the fourth triode is connected with a fourth inductor, the other end of the fourth inductor is connected with an eighth resistor, a ninth resistor and a fifth capacitor, the other end of the ninth resistor is connected with a negative electrode of the 5V power supply, the other end of the fifth capacitor is connected with a collector of the third triode, the other end of the eighth resistor is connected with a sixth capacitor, and the other end of the sixth capacitor is connected with the analog-to-digital conversion circuit;
the collector of the fourth triode is connected with an adjustable inductor, a tenth resistor, a seventh capacitor and an eighth capacitor, the other end of the adjustable inductor is connected with the other end of the seventh capacitor in parallel and is connected with a ninth capacitor, the other end of the ninth capacitor is connected with a tenth capacitor, and the other end of the tenth capacitor is connected with the other end of the fourth inductor; the other end of the eighth capacitor is connected with an emitting electrode of the fourth triode, and the other end of the tenth resistor is connected with the anode of the 5V power supply;
the utility model discloses a wireless remote control circuit, wherein, the analog-to-digital conversion circuit includes two operational amplifiers, 4 pins of two operational amplifiers are connected with the negative pole of 5V power and 8 pins are connected with the positive pole of 5V power; a pin 3 of the dual operational amplifier is connected with an eleventh resistor, the other end of the eleventh resistor is connected with a pin 2 of the dual operational amplifier and is also connected with a twelfth resistor and a thirteenth resistor, the other end of the twelfth resistor is connected with the negative electrode of the 5V power supply, and the other end of the thirteenth resistor is connected with the positive electrode of the 5V power supply;
a pin 1 of the dual operational amplifier is a digital quantity output end of the analog-to-digital conversion circuit and is also connected with a fourteenth resistor, and the other end of the fourteenth resistor is connected with a pin 3 of the dual operational amplifier and is also connected with an eleventh capacitor;
a 5-pin of the dual operational amplifier is an analog quantity input end of the analog-to-digital conversion circuit and is connected with the other end of the sixth capacitor, the 5-pin of the dual operational amplifier is also connected with a fifteenth resistor, and the other end of the fifteenth resistor is connected with the negative electrode of the 5V power supply;
and the other end of the seventeenth resistor is connected with the 7 pins of the double operational amplifier and also connected with the other end of the eleventh capacitor.
The beneficial effects of the utility model reside in that: the radio transmitting circuit loads the coding signal input by an external circuit from a coding input end on the generated high-frequency signal, and when the frequency matching of the high-frequency oscillating circuit and the radio transmitting circuit is successful, the high-frequency oscillating circuit outputs an analog signal to the analog-to-digital conversion circuit to be converted into a digital signal and outputs the digital signal to an external decoding circuit for decoding through a digital quantity output end; the first triode, the second triode and the resonator are high-frequency carrier frequency oscillators so as to carry the coded signals on the high-frequency signals generated by the first triode, the second triode and the resonator and transmit the coded signals to the aerial high-frequency oscillation circuit through the antenna for receiving; the circuit is simple, small in size, low in cost and wide in applicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a circuit diagram of a radio transmission circuit of a wireless remote control circuit according to a preferred embodiment of the present invention;
fig. 2 is a circuit diagram of a radio receiving circuit of the wireless remote control circuit according to the preferred embodiment of the present invention;
fig. 3 is an internal schematic diagram of a dual operational amplifier of a wireless remote control circuit according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The wireless remote control circuit according to the preferred embodiment of the present invention is shown in fig. 1, and also refer to fig. 2 to 3; comprises a radio transmission circuit 10 and a radio reception circuit 20 matched with the radio transmission circuit 10; the radio receiving circuit 20 includes a high-frequency oscillation circuit 21 and an analog-to-digital conversion circuit 22, the oscillation frequency of the high-frequency oscillation circuit 21 is consistent with the transmission frequency of the radio transmitting circuit 10, and the analog-to-digital conversion circuit 22 is used for converting the analog signal output after the high-frequency oscillation circuit 21 and the radio transmitting circuit 10 are successfully matched into a digital signal;
the radio transmission circuit 10 includes first and second transistors Q3 and Q4 and a resonator X1; a collector of the first triode Q3 is connected with a first inductor L4 and a first capacitor C14, the other end of the first inductor L4 is connected with a second inductor L5, a first resistor R16 and a resonator X1, and the other end of the first capacitor C14 is connected with a transmitting antenna ANT 1;
the other ends of the resonator X1 and the first resistor R16 are both connected with the base electrode of the first triode Q3, and the other end of the second inductor L5 is connected with the positive electrode of the 12V power supply;
an emitter of the first triode Q3 is connected with a collector of the second triode Q4, the other end of the first inductor L4 is also connected with a second capacitor C13, and the other end of the second capacitor C13 is connected with a collector of the second triode Q4;
the base electrode of the second triode Q4 is connected with a second resistor R17, the other end of the second resistor R17 is the coding input end DATA of the radio transmitting circuit 10, and the emitting electrode of the second triode Q4 is connected with the negative electrode of the 12V power supply;
the transmission frequency of the radio transmission circuit 10 is typically 315MHz or 433MHz, modulated by an encoder which generates a low frequency modulation signal, typically 2262 or 1527 (with many compatible chips). This chip encodes and outputs the key level signal to the DATA terminal of the radio transmission circuit 10, namely: an encoding input DATA;
the radio transmitting circuit 10 loads the coded signal inputted from the code input terminal DATA by the external circuit on the generated high frequency signal, when the frequency matching between the high frequency oscillation circuit 21 and the radio transmitting circuit 10 is successful, the high frequency oscillation circuit 21 outputs the analog signal to the analog-to-digital conversion circuit 22 to be converted into the digital signal, and the digital signal is outputted to the external decoding circuit for decoding through the digital output terminal; the first triode Q3, the second triode Q4 and the resonator X1 form a high-frequency carrier frequency oscillator, so that the coded signals are carried on high-frequency signals generated by the high-frequency carrier frequency oscillator and are transmitted to the air through an antenna to be received by the high-frequency oscillation circuit 21; the circuit is simple, small in size, low in cost and wide in applicability.
As shown in fig. 2, the high-frequency oscillation circuit 21 includes a third transistor Q1 and a fourth transistor Q2; the base of the third triode Q1 is connected with a third resistor R1 and a third capacitor C1, the other end of the third capacitor C1 is connected with a third inductor L1, a fourth capacitor C2 and a receiving antenna ANT2, and the other ends of the third inductor L1 and the fourth capacitor C2 are both grounded;
a collector of the third triode Q1 is connected with a fourth resistor R2, the other end of the fourth resistor R2 is connected with the other end of the third resistor R1 and is also connected with a fifth resistor R3, the other end of the fifth resistor R3 is connected with the positive electrode of the 5V power supply, and an emitter of the third triode Q1 is connected with the negative electrode of the 5V power supply;
the base electrode of the fourth triode Q2 is connected with a sixth resistor R4 and a seventh resistor R5, the other end of the sixth resistor R4 is connected with the anode of the 5V power supply, and the other end of the seventh resistor R5 is connected with the cathode of the 5V power supply;
an emitter of the fourth triode Q2 is connected with a fourth inductor L2, the other end of the fourth inductor L2 is connected with an eighth resistor R7, a ninth resistor R6 and a fifth capacitor C3, the other end of the ninth resistor R6 is connected with a negative electrode of a 5V power supply, the other end of the fifth capacitor C3 is connected with a collector of the third triode Q1, the other end of the eighth resistor R7 is connected with a sixth capacitor C6, and the other end of the sixth capacitor C6 is connected with the analog-to-digital conversion circuit 22;
the collector of the fourth triode Q2 is connected with an adjustable inductor L3, a tenth resistor R8, a seventh capacitor C8 and an eighth capacitor C7, the other end of the adjustable inductor L3 is connected in parallel with the other end of the seventh capacitor C8 and is connected with a ninth capacitor C9, the other end of the ninth capacitor C9 is connected with a tenth capacitor C5, and the other end of the tenth capacitor C5 is connected with the other end of the fourth inductor L2; the other end of the eighth capacitor C7 is connected to the emitter of the fourth transistor Q2, and the other end of the tenth resistor R8 is connected to the positive terminal of the 5V power supply.
As shown in fig. 2, the analog-to-digital conversion circuit 22 includes a dual operational amplifier U1, a pin 4 of the dual operational amplifier U1 is connected to the negative pole of the 5V power supply and a pin 8 is connected to the positive pole of the 5V power supply; an eleventh resistor R12 is connected to a pin 3 of the dual operational amplifier U1, the other end of the eleventh resistor R12 is connected with a pin 2 of the dual operational amplifier U1 and is also connected with a twelfth resistor R15 and a thirteenth resistor R14, the other end of the twelfth resistor R15 is connected with the negative electrode of the 5V power supply, and the other end of the thirteenth resistor R14 is connected with the positive electrode of the 5V power supply;
a pin 1 of the dual operational amplifier U1 is a digital output terminal of the analog-to-digital conversion circuit 22 and is further connected with a fourteenth resistor R13, and the other end of the fourteenth resistor R13 is connected with a pin 3 of the dual operational amplifier U1 and is further connected with an eleventh capacitor C12;
a pin 5 of the dual operational amplifier U1 is an analog input end of the analog-to-digital conversion circuit 22 and is connected with the other end of the sixth capacitor C6, the pin 5 of the dual operational amplifier U1 is also connected with a fifteenth resistor R9, and the other end of the fifteenth resistor R9 is connected with the negative electrode of the 5V power supply;
a sixteenth resistor R10 and a seventeenth resistor R11 are connected to a pin 6 of the dual operational amplifier U1, the other end of the sixteenth resistor R10 is connected with the negative electrode of the 5V power supply, and the other end of the seventeenth resistor R11 is connected with a pin 7 of the dual operational amplifier U1 and is also connected with the other end of an eleventh capacitor C12;
the high-frequency oscillation circuit 21 employs a capacitance three-point oscillator, and the oscillation frequency coincides with the transmission frequency of the radio transmission circuit 10. The intermittent oscillation is generated in the oscillation process of the high-frequency oscillation, which in turn controls the oscillation and intermittence of the high-frequency oscillation circuit 21. The frequency of the intermittent oscillations is determined by the parameters of the circuit (typically 1 hundred to several hundred kilohertz). The frequency is selected to be low, the anti-interference performance of the circuit is good, but the receiving sensitivity is low; on the contrary, the frequency is selected to be high, the receiving sensitivity is good, but the anti-interference performance is poor. Both should be considered according to the actual situation.
The high-frequency oscillation circuit 21 has a very high gain, and when the control signal is not received, a special noise, called super noise, is generated due to the interference of external stray signals and the thermal disturbance of the circuit, the frequency range of the noise is 0.3-5 kHz, and if a loudspeaker is used for listening, the noise is 'sand' sound. When a control signal arrives (a control signal transmitted from the radio transmission circuit 10 via the transmission antenna ANT1 is received), the circuit resonates, the super noise is suppressed, and the high-frequency oscillation circuit 21 starts to oscillate. The speed of the oscillation process and the length of the pause time are controlled by the amplitude of the received signal. When the amplitude of the received signal is large, the initial level is high, the oscillation process is established quickly, the intermittent time of each oscillation is short, and the obtained control voltage is also high; conversely, when the amplitude of the received signal is small, the resulting control voltage is also low. The high and low voltages are converted into TTL level pulse signals by LM358 and output via DATE terminal
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (3)
1. A wireless remote control circuit includes a radio transmission circuit and a radio reception circuit matched with the radio transmission circuit; the radio receiving circuit is characterized by comprising a high-frequency oscillating circuit and an analog-to-digital conversion circuit, wherein the oscillating frequency of the high-frequency oscillating circuit is consistent with the transmitting frequency of the radio transmitting circuit, and the analog-to-digital conversion circuit is used for converting an analog signal output after the high-frequency oscillating circuit and the radio transmitting circuit are successfully matched into a digital signal;
the radio transmission circuit comprises a first triode, a second triode and a resonator; a collector of the first triode is connected with a first inductor and a first capacitor, the other end of the first inductor is connected with a second inductor, a first resistor and the resonator, and the other end of the first capacitor is connected with a transmitting antenna;
the other ends of the resonator and the first resistor are connected with the base electrode of the first triode, and the other end of the second inductor is connected with the positive electrode of a 12V power supply;
an emitting electrode of the first triode is connected with a collector electrode of the second triode, the other end of the first inductor is also connected with a second capacitor, and the other end of the second capacitor is connected with the collector electrode of the second triode;
and the base electrode of the second triode is connected with a second resistor, the other end of the second resistor is the coding input end of the radio transmitting circuit, and the emitting electrode of the second triode is connected with the negative electrode of the 12V power supply.
2. The wireless remote control circuit according to claim 1, wherein the high frequency oscillating circuit comprises a third transistor and a fourth transistor; a base electrode of the third triode is connected with a third resistor and a third capacitor, the other end of the third capacitor is connected with a third inductor, a fourth capacitor and a receiving antenna, and the other ends of the third inductor and the fourth capacitor are grounded;
a collector of the third triode is connected with a fourth resistor, the other end of the fourth resistor is connected with the other end of the third resistor and is also connected with a fifth resistor, the other end of the fifth resistor is connected with the anode of a 5V power supply, and an emitter of the third triode is connected with the cathode of the 5V power supply;
a base electrode of the fourth triode is connected with a sixth resistor and a seventh resistor, the other end of the sixth resistor is connected with the anode of the 5V power supply, and the other end of the seventh resistor is connected with the cathode of the 5V power supply;
an emitter of the fourth triode is connected with a fourth inductor, the other end of the fourth inductor is connected with an eighth resistor, a ninth resistor and a fifth capacitor, the other end of the ninth resistor is connected with a negative electrode of the 5V power supply, the other end of the fifth capacitor is connected with a collector of the third triode, the other end of the eighth resistor is connected with a sixth capacitor, and the other end of the sixth capacitor is connected with the analog-to-digital conversion circuit;
the collector of the fourth triode is connected with an adjustable inductor, a tenth resistor, a seventh capacitor and an eighth capacitor, the other end of the adjustable inductor is connected with the other end of the seventh capacitor in parallel and is connected with a ninth capacitor, the other end of the ninth capacitor is connected with a tenth capacitor, and the other end of the tenth capacitor is connected with the other end of the fourth inductor; the other end of the eighth capacitor is connected with an emitting electrode of the fourth triode, and the other end of the tenth resistor is connected with the anode of the 5V power supply.
3. The wireless remote control circuit according to claim 2, wherein the analog-to-digital conversion circuit comprises a dual operational amplifier, wherein 4 pins of the dual operational amplifier are connected to the negative pole of the 5V power supply and 8 pins of the dual operational amplifier are connected to the positive pole of the 5V power supply; a pin 3 of the dual operational amplifier is connected with an eleventh resistor, the other end of the eleventh resistor is connected with a pin 2 of the dual operational amplifier and is also connected with a twelfth resistor and a thirteenth resistor, the other end of the twelfth resistor is connected with the negative electrode of the 5V power supply, and the other end of the thirteenth resistor is connected with the positive electrode of the 5V power supply;
a pin 1 of the dual operational amplifier is a digital quantity output end of the analog-to-digital conversion circuit and is also connected with a fourteenth resistor, and the other end of the fourteenth resistor is connected with a pin 3 of the dual operational amplifier and is also connected with an eleventh capacitor;
a 5-pin of the dual operational amplifier is an analog quantity input end of the analog-to-digital conversion circuit and is connected with the other end of the sixth capacitor, the 5-pin of the dual operational amplifier is also connected with a fifteenth resistor, and the other end of the fifteenth resistor is connected with the negative electrode of the 5V power supply;
and the other end of the seventeenth resistor is connected with the 7 pins of the double operational amplifier and also connected with the other end of the eleventh capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796917.1U CN211403583U (en) | 2019-10-24 | 2019-10-24 | Wireless remote control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796917.1U CN211403583U (en) | 2019-10-24 | 2019-10-24 | Wireless remote control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211403583U true CN211403583U (en) | 2020-09-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921796917.1U Active CN211403583U (en) | 2019-10-24 | 2019-10-24 | Wireless remote control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211403583U (en) |
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2019
- 2019-10-24 CN CN201921796917.1U patent/CN211403583U/en active Active
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