CN219609785U - Radio frequency remote control circuit, radio frequency receiving circuit and radio frequency control system - Google Patents
Radio frequency remote control circuit, radio frequency receiving circuit and radio frequency control system Download PDFInfo
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- CN219609785U CN219609785U CN202223596887.4U CN202223596887U CN219609785U CN 219609785 U CN219609785 U CN 219609785U CN 202223596887 U CN202223596887 U CN 202223596887U CN 219609785 U CN219609785 U CN 219609785U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the utility model relates to a radio frequency remote control circuit, a radio frequency receiving circuit and a radio frequency control system. The radio frequency remote control circuit comprises a remote control end controller, a power supply switch module, a key control module, a radio frequency transmitting module and a transmitting antenna; the first end of the power supply switch module is used for being connected with a power supply battery, and the second end of the power supply switch module is used for being connected with each module at the rear end and providing power; the key control module is used for generating a key control signal and transmitting the key control signal to the remote control end controller, and the remote control end controller receives the key control signal and generates an equipment control signal; the radio frequency transmitting module generates a carrier signal, mixes the carrier signal with the equipment control signal to obtain a radio frequency radiation signal, and radiates the radio frequency radiation signal to the radio frequency receiving circuit through the transmitting antenna. The radio frequency remote control circuit enables household products not to be provided with a large number of wires and control switches during installation, reduces installation cost, and enables users to hold the remote controller to carry out wireless remote control on the household products, so that the radio frequency remote control circuit is convenient to use.
Description
Technical Field
The present utility model relates to the field of remote control technologies, and in particular, to a radio frequency remote control circuit, a radio frequency receiving circuit, and a radio frequency control system.
Background
Household products are indispensable for life of people, such as fans, ventilation fans, summer heat lamps, lighting lamps and the like. Under normal conditions, the household products with simple functions need to be provided with physical wires for controlling the switch or the use mode during installation, so that certain manpower and material resources are consumed for grooving and wiring installation, the installation cost is high, and a user needs to approach the switch to realize the control of the household products, so that the household products are inconvenient to use.
Disclosure of Invention
Based on the above, the utility model provides a radio frequency remote control circuit, a radio frequency receiving circuit and a radio frequency control system. The radio frequency remote control circuit can be matched with the radio frequency receiving circuit to realize remote control of household products, so that a large number of wires and control switches are not required to be arranged when the household products are installed, the installation cost is reduced, and a user can carry out wireless remote control on the household products by holding the remote controller, so that the radio frequency remote control circuit is convenient to use.
According to a first aspect of the present utility model, there is provided a radio frequency remote control circuit applied to a remote controller, including a remote control end controller, a power supply switch module electrically connected to the remote control end controller, a key control module, a radio frequency transmitting module and a transmitting antenna;
the first end of the power supply switch module is used for being connected with the power supply battery, and the second end of the power supply switch module is used for being connected with the remote control end controller, the key control module and the radio frequency emission module and providing power;
the key control module is used for generating a key control signal and transmitting the key control signal to the remote control end controller, and the remote control end controller receives the key control signal and generates an equipment control signal; the radio frequency transmitting module generates a carrier signal, mixes the carrier signal with the equipment control signal to obtain a radio frequency radiation signal, and radiates the radio frequency radiation signal to the radio frequency receiving circuit through the transmitting antenna.
According to a second aspect of the present utility model, there is provided a radio frequency receiving circuit applied to an electronic device, including a receiving end controller, a receiving antenna electrically connected to the receiving end controller, a radio frequency receiving module, and an output control module;
the receiving antenna is used for receiving the radio frequency radiation signal emitted by the radio frequency remote control circuit according to the embodiment, and transmitting the radio frequency radiation signal to the signal input end of the receiving end controller through the radio frequency receiving module;
the receiving end controller receives the radio frequency radiation signals, generates control signals and transmits the control signals to each execution component of the electronic equipment through the output control module.
According to a third aspect of the present utility model, there is provided a radio frequency control system, including the radio frequency remote control circuit according to the above embodiment, and further including the radio frequency receiving circuit according to the above embodiment, where the radio frequency remote control circuit sends a radio frequency radiation signal to the radio frequency receiving circuit to implement radio frequency remote control.
By adopting the technical scheme in the embodiment of the utility model, the remote control of the household product can be realized by arranging the radio frequency remote control circuit and the radio frequency receiving circuit which are matched with each other, so that a large number of wires and control switches are not required to be arranged when the household product is installed, the installation cost is reduced, and a user can carry out wireless remote control on the household product by holding the remote controller by hand, thereby being convenient to use.
For a better understanding and implementation, the technical solution of the present utility model is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic block diagram of a radio frequency remote control circuit provided by an embodiment of the present utility model;
fig. 2 is a component connection diagram of a radio frequency remote control circuit according to an embodiment of the present utility model;
fig. 3 is a schematic block diagram of a radio frequency receiving circuit according to an embodiment of the present utility model;
fig. 4 is a component connection diagram of a radio frequency receiving module according to an embodiment of the present utility model;
FIG. 5 is a component connection diagram of an output control module according to an embodiment of the present utility model;
fig. 6 is a component connection diagram of a power module according to an embodiment of the present utility model.
Reference numerals in the drawings: 11. a remote control end controller; 12. a power supply switch module; 13. a key control module; 14. a radio frequency transmitting module; 15. a transmitting antenna; 21. a receiving end controller; 22. a receiving antenna; 23. a radio frequency receiving module; 24. and an output control module.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present utility model are shown in the accompanying drawings.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Several specific examples are given below to describe the technical solution of the present utility model in detail. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
The embodiment of the utility model provides a radio frequency remote control circuit, a radio frequency receiving circuit and a radio frequency control system. The radio frequency remote control circuit can be matched with the radio frequency receiving circuit to realize remote control of household products, so that a large number of wires and control switches are not required to be arranged when the household products are installed, the installation cost is reduced, and a user can carry out wireless remote control on the household products by holding the remote controller, so that the radio frequency remote control circuit is convenient to use.
The following describes a radio frequency remote control circuit and a radio frequency receiving circuit in an embodiment of the present utility model with reference to the accompanying drawings.
In a first aspect, the radio frequency remote control circuit in the embodiment is applied to a remote controller, and the remote controller can be applied to remote control of various household products, so as to solve the problems that excessive wires are required to be laid during installation of the household products, and users cannot use the remote controller conveniently.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic block diagram of a radio frequency remote control circuit according to an embodiment of the present utility model; fig. 2 is a component connection diagram of a radio frequency remote control circuit according to an embodiment of the present utility model.
As shown in fig. 1, the radio frequency remote control circuit includes a remote control end controller 11, a power supply switch module 12 electrically connected with the remote control end controller 11, a key control module 13, a radio frequency transmitting module 14 and a transmitting antenna 15.
The first end of the power supply switch module 12 is used for being connected with the positive electrode of the power supply battery, and the second end of the power supply switch module is used for being connected with the remote control end controller 11, the key control module 13 and the radio frequency transmitting module 14 and providing power.
The key control module 13 is used for generating a key control signal and transmitting the key control signal to the remote control end controller 11, and the remote control end controller 11 receives the key control signal and generates an equipment control signal; the radio frequency transmitting module 14 generates a carrier signal, mixes the carrier signal with the device control signal to obtain a radio frequency radiation signal, and radiates the radio frequency radiation signal to the radio frequency receiving circuit through the transmitting antenna 15.
By adopting the technical scheme in the embodiment of the utility model, the remote control of the household product can be realized by arranging the radio frequency remote control circuit which is matched with the radio frequency receiving circuit, so that a large number of wires and control switches are not required to be arranged when the household product is installed, the installation cost is reduced, and a user can carry out wireless remote control on the household product by holding the remote control by hand, thereby being convenient to use.
Optionally, the power switch module 12 includes a ball switch unit and conductive balls; the ball switch unit is installed along the vertical direction slope of remote controller, and the ball switch unit includes first conductive end and second conductive end, and first conductive end is used for being connected with the anodal of power supply battery, and the second conductive end is used for being connected and provides the power with remote control end controller 11, button control module 13 and the radio frequency emission module 14 of rear end. The conductive ball is connected with the second conductive end, and the conductive ball moves to the first conductive end of the ball switch unit to connect the first conductive end with the second conductive end, so that the power supply battery can provide direct current power for the back-end circuit.
Specifically, the ball switch unit may be long, and the remote controller is also generally rectangular, and the ball switch unit is installed obliquely along the vertical direction of the remote controller, i.e., correspondingly along the length direction of the remote controller. The first conductive end can be a metal conductive sheet, the second conductive end can be a metal conductive groove with an opening, the conductive ball is made of a metal conductive material, and the conductive ball can roll in the metal conductive groove. The metal conductive grooves and the metal conductive sheets cannot be in direct contact, but can only be in indirect contact through conductive balls. When the ball switch unit is installed on the remote controller and the remote controller is horizontally placed, one end of the metal conducting groove, which is close to the metal conducting strip, is higher, and one end, which is far away from the metal conducting groove, is lower, at the moment, the conducting balls cannot roll to the metal conducting strip, so that the metal conducting groove cannot be contacted with the metal conducting strip, namely, the power supply battery cannot supply power for a rear-end circuit, and the remote controller automatically cuts off power to enter a shutdown mode so as to save electric energy. When a user holds the remote controller to point the direction mark on the remote controller to the controlled equipment to remotely control the controlled equipment, the conductive balls roll to one end close to the metal conductive sheet, so that the metal conductive sheet is in contact with the metal conductive groove through the conductive balls, and the electric energy of the power supply battery is transmitted to the rear-end circuit.
The battery capacity of the power supply battery is not limited, and may be, for example, a fifth battery, a seventh battery, or other rechargeable batteries.
Optionally, the radio frequency transmitting module 14 includes a radio frequency chip U2 and an amplifying circuit; the remote control terminal controller 11 may be a low power consumption encoding chip U1, where the control signal output terminal TXD of the low power consumption encoding chip U1 and the carrier signal output terminal OUT of the radio frequency chip U2 are both connected to an input terminal of an amplifying circuit, and an output terminal of the amplifying circuit is connected to the transmitting antenna 15. The transmitting antenna 15 may be an on-board antenna.
The radio frequency chip U2 can be the sound meter element U2, and the transmitter oscillation network formed by the sound meter element U2 has the advantages of good frequency selection characteristic, stable frequency, small input/output impedance error, small transmission loss, good electromagnetic interference resistance, high reliability, small volume, light weight and the like, so that the radio frequency wireless transmitting circuit becomes simpler and more reliable.
Specifically, the amplifying circuit comprises a triode Q1, a base bias resistor R2 and a current limiting resistor R9; the base B of the triode Q1 is an input end of an amplifying circuit, the collector C of the triode Q1 is an output end of the amplifying circuit, the control signal output end TXD of the remote control end controller 11U1 and the carrier signal output end OUT of the radio frequency chip U2 are connected to the base B of the triode Q1 through a base bias resistor R2, the emitter E of the triode Q1 is grounded through a current limiting resistor R9, and the collector C of the triode Q1 is connected with an emitting antenna 15.
When the control signal output end TXD of the low-power consumption coding chip U1 outputs the equipment control signal, the carrier signal output end OUT of the radio frequency chip U2 synchronously outputs the ultrahigh frequency carrier signal, the equipment control signal and the ultrahigh frequency carrier signal become modulated radio frequency radiation signals after being mixed, and the modulated radio frequency radiation signals are radiated to a radio frequency receiving circuit through a transmitting antenna 15. The energy of the ultrahigh frequency carrier signal is smaller, the energy of the equipment control signal is larger, the equipment control signal is a bias current signal, when the ultrahigh frequency carrier signal and the equipment control signal are overlapped, the change of the base current of the triode Q1 is caused, the change of the base current of the triode Q1 is amplified and output on the collector electrode of the triode Q1, and then the triode Q is radiated to the surrounding through the transmitting antenna 15 and is transmitted to the receiving antenna 22 on the radio frequency receiving circuit through an air medium, so that the transmission of remote control signals is realized.
Optionally, the radio frequency transmitting module 14 further includes an impedance matching circuit; the collector C of the transistor Q1 is connected to the transmitting antenna 15 through an impedance matching circuit. The impedance matching circuit comprises an inductor L2 and a capacitor C1 which are connected with each other, so that the transmitting antenna 15 can smoothly transmit the transmitting power of the remote controller through the alignment of the transmitting antenna 15.
Optionally, a feedback capacitor C2 is further connected in parallel between the collector C and the emitter E of the triode Q1, and acts as positive feedback of signals, so as to improve the amplification gain of radio frequency radiation signals.
Optionally, an ac bypass capacitor is further disposed between the collector C of the transistor Q1 and the power supply reference ground, so that the circuit will not receive interference from the high frequency signal.
Optionally, the collector C of the transistor Q1 is further connected to the positive electrode of the power supply battery or the second terminal of the ball switch unit through an inductor L1. The inductor L1 is a high-frequency choke inductor, provides a necessary direct-current static bias voltage path for the triode Q1 and prevents high-frequency signals from being conducted to a power circuit to generate interference.
Optionally, in order to remind the user that a remote control signal has been sent, an indicator light LED3 is further provided on the remote control. The anode of the indicator lamp LED3 is connected to the second conducting end of the ball switch unit through a current limiting resistor R10, the cathode of the indicator lamp LED is connected to the collector of the switch tube Q2, the emitter of the switch tube Q2 is grounded, and the base of the switch tube Q2 is connected to the control signal output end TXD of the low-power consumption coding chip U1 through a current limiting resistor R11 to obtain a switch driving signal.
When the control signal output end TXD of the low-power consumption coding chip U1 outputs a device control signal, and the voltage value of the device control signal is larger than the conducting voltage of the switching tube Q2, the switching tube Q2 is conducted, so that the indicator light LED3 is powered on to indicate that a remote controller has a function command to send out.
The operating frequency band of the rf transmitter module 14 is 433Mhz.
In the technical scheme of the embodiment, the radio frequency remote control circuit matched with the radio frequency receiving circuit is arranged, so that remote control can be realized on household products, a large number of wires and control switches are not required to be arranged when the household products are installed, the installation cost is reduced, and a user can carry out wireless remote control on the household products by holding the remote control by hand, so that the household products are convenient to use.
Further, the power supply switch module 12 is set to be in ball contact, so that the remote controller can be disconnected from a power supply battery when the remote controller is horizontally placed, the power consumption of the remote controller is reduced, each module of the remote controller can be connected with the power supply battery to obtain a power supply when a user holds the remote controller to aim at controlled equipment, and the remote controller is convenient to use and capable of automatically starting work.
In a second aspect, the radio frequency receiving circuit in the embodiment is applied to electronic equipment, and the electronic equipment can be various household products, such as fans, fan lamps, exhaust fans, lighting lamps, summer heat lamps and the like, and the radio frequency receiving circuit is matched with the radio frequency remote control circuit for use, so that the problems that excessive wires are required to be laid when the household products are installed and users cannot use the radio frequency remote control circuit conveniently are solved.
Referring to fig. 3, fig. 3 is a schematic block diagram of a radio frequency receiving circuit according to an embodiment of the utility model.
The radio frequency receiving circuit is applied to electronic equipment and comprises a receiving end controller 21, a receiving antenna 22 electrically connected with the receiving end controller 21, a radio frequency receiving module 23, an output control module 24 and a receiving end power supply module, wherein the receiving end power supply module provides corresponding power supply for the receiving end controller 21, the radio frequency receiving module 23 and the output control module 24.
The receiving antenna 22 is configured to receive a radio frequency radiation signal emitted by the radio frequency remote control circuit according to the above embodiment, and transmit the radio frequency radiation signal to the signal input end of the receiving end controller 21 through the radio frequency receiving module 23; the receiver controller 21 receives the rf radiation signals, generates control signals, and transmits the control signals to the respective execution units of the electronic device through the output control module 24.
Referring to fig. 4 and fig. 5, fig. 4 is a component connection diagram of a radio frequency receiving module 23 according to an embodiment of the utility model; fig. 5 is a component connection diagram of the output control module 24 according to an embodiment of the present utility model.
Optionally, the radio frequency receiving module 23 includes a superheterodyne receiving chip U3, the receiving antenna 22 receives the radio frequency radiation signal and transmits the radio frequency radiation signal to the superheterodyne receiving chip U3, and the superheterodyne receiving chip U3 receives the radio frequency radiation signal, demodulates the radio frequency radiation signal, and outputs the demodulated radio frequency radiation signal to the receiving end controller 21U4. The operating frequency band of the radio frequency receiving module 23 is 433Mhz.
Optionally, the radio frequency receiving module 23 includes a frequency selecting circuit, the receiving antenna 22 is connected to the superheterodyne receiving chip U3 through the frequency selecting circuit, the receiving antenna 22 receives a radio frequency radiation signal, and the radio frequency radiation signal is transmitted to the antenna input end INT of the superheterodyne receiving chip U3 after frequency band filtering through the frequency selecting circuit. The frequency selecting circuit comprises a frequency selecting inductor L10 and a frequency selecting capacitor C11, and the frequency selecting inductor L10 and the frequency selecting capacitor C11 are connected in parallel between the receiving antenna 22 and the power supply ground GND. The frequency selection circuit performs reception frequency screening, that is, sets the center frequency of the reception signal of the radio frequency reception module 23 to be consistent with the transmission frequency of the remote controller.
Optionally, the radio frequency receiving module 23 further includes a filter circuit, and the filter circuit is connected between the frequency selecting circuit and the signal input terminal of the receiving terminal controller 21. The filter circuit comprises a filter capacitor C12 and a filter inductor L6, after the receiving antenna 22 receives radio frequency radiation signals, clutter signals outside the center frequency are filtered by the filter circuit formed by the filter capacitor C12 and the filter inductor L6, and then the clutter signals are sent to an input pin ANT pin of the high-sensitivity superheterodyne receiving chip U3 to amplify and demodulate the radio frequency radiation signals, and then a function command code is output to the receiving end controller 21U4. The receiving end controller 21U1 reads the pin data connected thereto, judges whether the data function command is valid, and executes the logic control output, thereby realizing the remote control of each execution unit of the electronic device.
Optionally, the control function logic of the receiving end controller 21U4 is simple, and the output and input functions are few, so that the logic control design can be performed by adopting a singlechip with higher cost performance, stable performance and large output and common 8-bit SOP-8 packaging pins. The function is to receive the remote controller function command and execute the corresponding function control logic. Each time an effective function command is received, the pin of the receiving end controller 21U4 outputs a pulse signal with a fixed frequency to directly drive the buzzer SP, and the SP "drops" to sound in a short time to indicate that the command is received, and other output pins also execute corresponding commands at the same time.
Alternatively, the output control scheme adopted by the output control module 24 is a bidirectional thyristor RIAC, and the bidirectional thyristor RIAC has the advantages of small volume, high efficiency, long service life, quick on-off reaction, contactless operation, no spark, no noise, low cost, simple control circuit and the like. The voltage withstand value of the bidirectional thyristor adopted by the output control module 24 is 600V, the rated current is 2A, and the gate trigger current is controlled to be 25 mA. The user can replace the thyristor device according to the actual load. In the output control module 24, the matching resistor R3, the matching resistor R4, and the matching resistor R5 are respectively connected to the trigger on control G pole pins of the silicon controlled device BT1, the silicon controlled device BT2, and the silicon controlled device BT3, and the corresponding pins of the receiving end controller 21U4 output level signals to trigger on and off to control the functional operation of the product.
Optionally, the radio frequency receiving circuit further includes a receiving end power module 15, as shown in fig. 6, where the receiving end power module is a non-isolated power conversion scheme, the voltage input range is wide, and the ac input voltage can be normally converted from 85V to 265V to a stable dc voltage VCC (5V) for output. The input voltage is used as short-circuit protection through a solid-state fuse F1, a piezoresistor ZNR1 is used as input lightning protection and an XC2 safety capacitor is used for internal EMI interference suppression, a resistor R1 provides an internal discharge loop for equipment plug disconnection, electric shock is prevented, an inductor L1 is a filter inductor, and high-frequency interference signals on a power grid are prevented from entering a conversion circuit. The input power supply is subjected to unidirectional rectification through D1 after the processing, and the low-frequency filter capacitor E1 is subjected to filtering energy storage and then is input into the integrated high-voltage non-isolated switching power supply conversion chip U5, and then stable and reliable 5V direct-current voltage is output through simple circuit combination. The receiving end power supply module has the advantages of simple circuit, few used elements, low cost, overcurrent protection, undervoltage protection and overtemperature protection functions, stable and reliable work and can be used for household electrical appliance products in intelligent households.
In the technical scheme of the embodiment, the radio frequency receiving circuit matched with the radio frequency remote control circuit is arranged, so that remote control can be realized on household products, a large number of wires and control switches are not required to be arranged when the household products are installed, the installation cost is reduced, and a user can carry out wireless remote control on the household products by holding the remote control by hand, so that the remote control device is convenient to use.
According to a third aspect of the present embodiment, there is provided a radio frequency control system including the radio frequency remote control circuit and the radio frequency receiving circuit as described in the above embodiments. The radio frequency remote control circuit sends radio frequency radiation signals to the radio frequency receiving circuit to realize radio frequency remote control.
The radio frequency control system has the advantages of simple whole circuit, wide working voltage (the range of input Alternating Current (AC) mains supply is 85V-265V), stable work and strong anti-interference capability; the wireless radio frequency is transmitted and received, the working frequency range is 433Mhz, the controllable distance is long, and the signal penetrability is strong; the remote controller has long battery life and standby current of 0uA.
The radio frequency control system can be applied to remote control of various household electronic products, such as fan control, exhaust fan control, lighting lamp control, super cooling control, super bath control and other scenes.
By adopting the technical scheme in the embodiment of the utility model, the remote control of the household product can be realized by arranging the radio frequency remote control circuit and the radio frequency receiving circuit which are matched with each other, so that a large number of wires and control switches are not required to be arranged when the household product is installed, the installation cost is reduced, and a user can carry out wireless remote control on the household product by holding the remote controller by hand, thereby being convenient to use.
It should be noted that: the specific model of the controller or the chip in each embodiment is not limited, and the model and the specification of each electronic component are not limited, and the inventor can determine the specific model and specification according to the circuit requirement.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (10)
1. The radio frequency remote control circuit is applied to a remote controller and is characterized by comprising a remote control end controller, a power supply switch module, a key control module, a radio frequency emission module and an emission antenna, wherein the power supply switch module, the key control module, the radio frequency emission module and the emission antenna are electrically connected with the remote control end controller;
the first end of the power supply switch module is used for being connected with the power supply battery, and the second end of the power supply switch module is used for being connected with the remote control end controller, the key control module and the radio frequency emission module and providing power;
the key control module is used for generating a key control signal and transmitting the key control signal to the remote control end controller, and the remote control end controller receives the key control signal and generates an equipment control signal; the radio frequency transmitting module generates a carrier signal, mixes the carrier signal with the equipment control signal to obtain a radio frequency radiation signal, and radiates the radio frequency radiation signal to the radio frequency receiving circuit through the transmitting antenna.
2. The radio frequency remote control circuit of claim 1, wherein the power switch module comprises a ball switch unit and a conductive ball;
the ball switch unit is installed along the vertical direction slope of remote controller, and ball switch unit includes first conductive end and second conductive end, and first conductive end is used for being connected with the power supply battery, and the second conductive end is used for being connected with remote control end controller, button control module and the radio frequency emission module of rear end, and conductive ball is connected with the second conductive end, and conductive ball removes to the first conductive end of ball switch unit, with first conductive end and second conductive end connection.
3. The radio frequency remote control circuit according to claim 1, wherein the radio frequency transmitting module comprises a radio frequency chip and an amplifying circuit; the control signal output end of the remote control end controller and the carrier signal output end of the radio frequency chip are both connected with the input end of the amplifying circuit, and the output end of the amplifying circuit is connected to the transmitting antenna.
4. The radio frequency remote control circuit of claim 3, wherein the amplifying circuit comprises a triode, a base bias resistor and a current limiting resistor;
the base electrode of the triode is an input end of the amplifying circuit, the collector electrode of the triode is an output end of the amplifying circuit, the control signal output end of the remote control end controller and the carrier signal output end of the radio frequency chip are connected to the base electrode of the triode through a base electrode bias resistor, the emitter electrode of the triode is grounded through a current limiting resistor, and the collector electrode of the triode is connected with the transmitting antenna.
5. The radio frequency remote control circuit of claim 4, wherein the radio frequency transmission module further comprises an impedance matching circuit; the collector of the triode is connected to the transmitting antenna through an impedance matching circuit.
6. The radio frequency receiving circuit is applied to electronic equipment and is characterized by comprising a receiving end controller, a receiving antenna, a radio frequency receiving module and an output control module, wherein the receiving antenna is electrically connected with the receiving end controller;
the receiving antenna is used for receiving the radio frequency radiation signals emitted by the radio frequency remote control circuit according to any one of claims 1 to 5, and transmitting the radio frequency radiation signals to the signal input end of the receiving end controller through the radio frequency receiving module;
the receiving end controller receives the radio frequency radiation signals, generates control signals and transmits the control signals to each execution component of the electronic equipment through the output control module.
7. The radio frequency receiving circuit according to claim 6, wherein the radio frequency receiving module comprises a superheterodyne receiving chip, the receiving antenna receives the radio frequency radiation signal and transmits the radio frequency radiation signal to the superheterodyne receiving chip, and the superheterodyne receiving chip receives the radio frequency radiation signal and demodulates the radio frequency radiation signal and outputs the demodulated radio frequency radiation signal to the receiving end controller.
8. The radio frequency receiving circuit according to claim 7, wherein the radio frequency receiving module comprises a frequency selecting circuit, the receiving antenna is connected to the superheterodyne receiving chip through the frequency selecting circuit, the receiving antenna receives the radio frequency radiation signal, and the frequency band filtering is performed through the frequency selecting circuit, and the radio frequency radiation signal is transmitted to the superheterodyne receiving chip.
9. The radio frequency receiving circuit according to claim 8, wherein the radio frequency receiving module further comprises a filter circuit, the filter circuit being connected between the frequency selection circuit and the signal input of the receiver controller.
10. A radio frequency control system comprising a radio frequency remote control circuit according to any one of claims 1 to 5 and further comprising a radio frequency receiving circuit according to any one of claims 6 to 9, said radio frequency remote control circuit transmitting radio frequency radiation signals to said radio frequency receiving circuit for radio frequency remote control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223596887.4U CN219609785U (en) | 2022-12-29 | 2022-12-29 | Radio frequency remote control circuit, radio frequency receiving circuit and radio frequency control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223596887.4U CN219609785U (en) | 2022-12-29 | 2022-12-29 | Radio frequency remote control circuit, radio frequency receiving circuit and radio frequency control system |
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| Publication Number | Publication Date |
|---|---|
| CN219609785U true CN219609785U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223596887.4U Active CN219609785U (en) | 2022-12-29 | 2022-12-29 | Radio frequency remote control circuit, radio frequency receiving circuit and radio frequency control system |
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| Country | Link |
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| CN (1) | CN219609785U (en) |
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2022
- 2022-12-29 CN CN202223596887.4U patent/CN219609785U/en active Active
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