CN111275952A - Wireless communication system and air conditioner direct current motor power supply system using same - Google Patents
Wireless communication system and air conditioner direct current motor power supply system using same Download PDFInfo
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- CN111275952A CN111275952A CN201910104980.2A CN201910104980A CN111275952A CN 111275952 A CN111275952 A CN 111275952A CN 201910104980 A CN201910104980 A CN 201910104980A CN 111275952 A CN111275952 A CN 111275952A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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Abstract
The invention discloses a wireless communication system, which comprises a main control unit, wherein the main control unit is connected with a sine wave generating unit and can control the sine wave generating unit to generate sine waves with preset frequency; the main control unit is also connected with the power control unit and used for sending a power control signal to the power control unit; the power control unit is also connected with the sine wave generating unit, the power control unit can control the power of the sine wave generated by the sine wave generating unit, the transmitted information can be modulated onto the sine wave in a power modulation mode, and wireless transmission is carried out through the electromagnetic induction unit. The equipment can be controlled wirelessly, and a long physical connecting line is omitted.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a wireless communication system and an air conditioner direct current motor power supply system using the same.
Background
The current air conditioner internal fan uses a direct current motor, but the connection of the direct current motor and a main control board needs a longer physical connection line. When the direct current fan is damaged and the motor needs to be replaced, the direct current fan is not easy to disassemble.
The invention with the publication number of CN104617833A provides a direct current motor speed regulation control system and a control method based on PI control.A control center module unidirectionally receives signals of a key module and a direct current motor module with an encoder, unidirectionally transmits the signals to a display module and a motor driving module, and the motor driving module unidirectionally transmits the signals to the direct current motor module with the encoder. The rotation speed of the motor is prefabricated by keys, the control center module sends signals to the motor driving module and generates PWM waves, and the motor driving module drives the direct current motor to rotate. The encoder measures the rotating speed of the direct current motor and feeds the rotating speed back to the control center module. The control center compares the set speed with the measured speed to obtain a speed difference. And PI control is carried out according to the speed difference, the duty ratio of the PWM wave is changed, and finally the measured speed is close to the set speed, so that the debugging control of the direct current motor is realized. And displaying the duty ratio of the PWM wave, the set speed, the measured speed, the current coefficients of P and I and other information on a display module.
The invention with the publication number of CN103887898A provides a magnetic coupling electric energy wireless transmission system based on frequency control, which mainly comprises eight parts, namely a DSP control system based on a fuzzy neural control algorithm, a radio frequency power amplifier system, a distance detection system, an electric energy transmitting system, an electric energy receiving system, a rectification voltage regulation system, a DSP control power detection system and a load. The system belongs to the field of high-frequency electromagnetic theory engineering and signal transmission application frontier intersection, and solves the problem of wireless self-adaptive high-efficiency synchronous transmission of electric energy and signals. The invention overcomes the problem of load efficiency reduction under the change of the traditional electric energy wireless transmission working distance, and designs the electric energy and signal wireless self-adaptive synchronous transmission method which has simple structure, easy realization, high reliability, strong anti-interference capability and is based on the fuzzy neural control algorithm of the DSP.
The above patent introduces the field of wireless energy transmission and application of wireless energy transmission to the dc motor, but does not solve the problem of wireless connection and communication between the dc motor of the dc motor and the main control board.
Disclosure of Invention
An object of the present invention is to provide a wireless communication system and an air conditioner dc motor power supply system using the same, which enable wireless communication between a dc motor and a main control board.
Specifically, the invention is realized by the following technical scheme:
a wireless communication system comprises a first main control unit and a second main control unit, wherein the first main control unit is connected with a first sine wave generation unit and can control the first sine wave generation unit to generate sine waves with preset frequency; the first main control unit is also connected with the first power control unit and used for sending a first power control signal to the first power control unit; the first power control unit is also connected with the first sine wave generation unit and can control the power of the sine wave generated by the first sine wave generation unit; the first sine wave generating unit is connected with a primary coil of the electromagnetic induction unit, a secondary coil of the electromagnetic induction unit is connected with the second main control unit, a first switch circuit is arranged on a circuit connecting the secondary coil of the electromagnetic induction unit and the second main control unit, and the first switch circuit can close or disconnect the circuit connecting the secondary coil of the electromagnetic induction unit and the second main control unit; the second main control unit is connected with the second sine wave generating unit and can control the second sine wave generating unit to generate sine waves with preset frequency; the second main control unit is also connected with a second power control unit and used for sending a second power control signal to the second power control unit, the second power control unit is also connected with a second sine wave generation unit, and the second power control unit can control the power of the sine wave generated by the second sine wave generation unit; the second sine wave generating unit is connected with a secondary coil of the electromagnetic induction unit, a primary coil of the electromagnetic induction unit is connected with the first main control unit, a second switch circuit is arranged on a circuit connected with the primary coil of the electromagnetic induction unit and the first main control unit, and the second switch circuit can close or disconnect the circuit connected with the primary coil of the electromagnetic induction unit and the first main control unit.
Preferably, a first sampling unit and a first amplifying unit are further connected to a line connecting the secondary coil of the electromagnetic induction unit and the second main control unit.
Preferably, a second sampling unit and a second amplifying unit are further connected to a line connecting the primary coil of the electromagnetic induction unit and the first main control unit.
Preferably, the electromagnetic induction unit comprises a separable loose coupling transformer, a first resonance capacitor and a second resonance capacitor, one end of the first resonance capacitor is connected with the first sine wave generation unit and the first main control unit, and the other end of the first resonance capacitor is connected with a primary coil of the separable loose coupling transformer; and one end of the second resonance capacitor is connected with the second sine wave generating unit and the second main control unit, and the other end of the second resonance capacitor is connected with a secondary coil of the separable loose coupling transformer.
Preferably, the first sampling unit and the second sampling unit are respectively a first sampling resistor and a second sampling resistor, one end of the first sampling resistor is connected with the second resonance capacitor, and the other end of the first sampling resistor is grounded; one end of the second sampling resistor is connected with the first resonant capacitor, and the other end of the second sampling resistor is grounded.
Preferably, the first sine wave generating unit includes a first driving circuit, a first switch tube, a second driving circuit and a second switch tube, the first switch tube and the second switch tube are both N-channel enhancement MOSFETs, one end of the first driving circuit is connected to the first main control unit, the other end of the first driving circuit is connected to the gate of the first switch tube, one end of the second driving circuit is connected to the first main control unit, the other end of the second driving circuit is connected to the gate of the second switch tube, the drain of the first switch tube is connected to the first power control unit, the source of the first switch tube is connected to the drain of the second switch tube, the source of the second switch tube is grounded, and a lead is led out between the source of the first switch tube and the drain of the second switch tube as the output end of the first sine wave generating unit and connected to the electromagnetic induction unit.
Preferably, the first power control unit is a first boost circuit.
Preferably, the second sine wave generating unit comprises a third driving circuit, a third switching tube, a fourth driving circuit and a fourth switching tube, the third switching tube and the fourth switching tube are both N-channel enhancement MOSFETs, one end of the third driving circuit is connected with the second main control unit, and the other end of the third driving circuit is connected with a gate of the third switching tube; one end of the fourth driving circuit is connected with the second main control unit, the other end of the fourth driving circuit is connected with a grid electrode of a fourth switching tube, a drain electrode of the third switching tube is connected with the second power control unit, a source electrode of the third switching tube is connected with a drain electrode of the fourth switching tube, a source electrode of the fourth switching tube is grounded, and a lead is led out between the source electrode of the third switching tube and the drain electrode of the fourth switching tube to serve as an output end of the second sine wave generation unit and is connected with the electromagnetic induction unit.
Preferably, the second power control unit is a second boost circuit.
A power supply system of a direct current motor of an air conditioner uses the wireless communication system, the power supply system comprises a main control side power supply MCU, a power amplifier, a direct current voltage source, a third resonance capacitor, a separable loose coupling power supply transformer, a fourth resonance capacitor, a rectification filter unit, a switch power supply and a direct current motor, wherein the main control side power supply MCU and the direct current voltage source are both connected with the power amplifier, the power amplifier is connected with a primary coil of the separable loose coupling power supply transformer through the third resonance capacitor, a secondary coil of the separable loose coupling power supply transformer is connected with the rectification filter unit through the fourth resonance capacitor, the rectification filter unit is connected with the direct current motor on one hand and the switch power supply on the other hand, the main control side power supply MCU of the direct current motor power supply system and a first main control unit of the wireless communication system share the same MCU chip, the detachable loose coupling power supply transformer of the direct current motor power supply system and the electromagnetic induction unit of the wireless communication system share the same detachable loose coupling transformer, and the second main control unit of the wireless communication system is connected with the control panel of the direct current motor power supply system.
The invention has the beneficial effects that: the equipment can be controlled wirelessly, and a long physical connecting line is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that 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 according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of logic blocks of a wireless communication system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a logic module of a wireless communication system according to a second embodiment of the present invention;
fig. 3 is a detailed schematic diagram of a wireless communication system according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power supply system of a direct current motor of an air conditioner provided by the invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail below by way of examples.
A wireless communication system, as shown in fig. 1, includes a first main control unit and a second main control unit, where the first main control unit is connected to a first sine wave generation unit, and the first main control unit can control the first sine wave generation unit to generate a sine wave with a preset frequency; the first main control unit is also connected with the first power control unit and used for sending a first power control signal to the first power control unit, the first power control unit is also connected with the first sine wave generation unit, and the first power control unit can control the power of the sine wave generated by the first sine wave generation unit; the first sine wave generating unit is connected with a primary coil of the electromagnetic induction unit, a secondary coil of the electromagnetic induction unit is connected with the second main control unit, a first switch circuit is arranged on a circuit where the secondary coil of the electromagnetic induction unit is connected with the second main control unit, and the first switch circuit can close or disconnect the circuit where the secondary coil of the electromagnetic induction unit is connected with the second main control unit.
The second main control unit is connected with the second sine wave generating unit and can control the second sine wave generating unit to generate sine waves with preset frequency; the second main control unit is also connected with a second power control unit and used for sending a second power control signal to the second power control unit, the second power control unit is also connected with a second sine wave generation unit, and the second power control unit can control the power of the sine wave generated by the second sine wave generation unit; the second sine wave generating unit is connected with a secondary coil of the electromagnetic induction unit, a primary coil of the electromagnetic induction unit is connected with the first main control unit, a second switch circuit is arranged on a circuit connected with the primary coil of the electromagnetic induction unit and the first main control unit, and the second switch circuit can close or disconnect the circuit connected with the primary coil of the electromagnetic induction unit and the first main control unit.
The specific communication method of the wireless communication system is described below by taking the case where the first main control unit transmits information to the second main control unit. The first main control unit sends a signal to the first sine wave generation unit, so that the first sine wave generation unit generates sine waves with preset frequency, and meanwhile, the first main control unit determines the power control information sent to the first power control unit according to the content of the transmitted information, and specifically, the power control information can be sent in a mode of looking up a comparison table. For example, in the internal memory of the first master control unit, a first "transfer information-sine wave amplitude" look-up table is stored as follows:
| communicating content of information | Amplitude of sine wave |
| “A” | 1V |
| “B” | 2V |
| “C” | 3V |
| “D” | 4V |
| “E” | 5V |
First "transfer information-sine wave amplitude" look-up table
As shown in the above table, if the information transferred from the first master control unit to the second master control unit is "a", the first master control unit sends power control information to the first power control unit, so that the first power control unit controls the first sine wave generation unit to generate a sine wave with an amplitude of 1V, the sine wave with the amplitude of 1V is induced to the secondary coil of the electromagnetic induction unit through the primary coil of the electromagnetic induction unit, at the same time, the first switch circuit is closed, so that the sine wave of 1V on the secondary coil is input into the second main control unit, the second main control unit also stores a comparison table of 'transmission information-sine wave amplitude' consistent with that in the first main control unit, detects that the input sine wave amplitude is 1V, the information transmitted by the first main control unit is 'A' through looking up in a first 'transmitted information-sine wave amplitude' comparison table; the same principle is used when the first main control unit transmits the information of 'B', 'C', 'D' and 'E'.
The first main control unit controls the first sine wave generation unit to generate sine waves with corresponding amplitudes according to information to be transmitted, which is equivalent to the fact that the first main control unit modulates the information to be transmitted, and after the second main control unit learns the amplitude of the received sine waves, the information transmitted by the first main control unit is obtained through checking a comparison table of 'transmitted information-sine wave amplitude', which is equivalent to the fact that the second main control unit demodulates the received signals to obtain the information. The "passing information-sine wave amplitude" comparison table is used as a first encryption table in the first master control unit and as a first decryption table in the second master control unit.
Similarly, a second encryption table is also stored in the second master control unit, and the second encryption table is also a "transferred information-sine wave amplitude" comparison table, which is named as a second "transferred information-sine wave amplitude" comparison table as follows:
second "transfer information-sine wave amplitude" look-up table
The process of the second main control unit transmitting information to the first main control unit is the same as the process of the first main control unit transmitting information to the second main control unit, and the description is omitted here. The first main control unit also stores a second comparison table of transmission information and sine wave amplitude, and the first main control unit uses the second comparison table of transmission information and sine wave amplitude as a second decryption table.
Further, as shown in fig. 2, a first sampling unit and a first amplifying unit are further connected to a line connecting a secondary coil of the electromagnetic induction unit and the second main control unit, the first sampling unit is configured to sample a received sine wave, and the first amplifying unit is configured to amplify a sampled sine wave signal, so that the size of the sampled sine wave signal is adapted to the size of a signal that can be processed by the second main control unit.
Similarly, a second sampling unit and a second amplifying unit are connected to a circuit connecting the primary coil of the electromagnetic induction unit and the first main control unit, and the functions of the second sampling unit and the second amplifying unit are consistent with the functions of the first sampling unit and the first amplifying unit.
Specifically, as shown in fig. 3, the electromagnetic induction unit includes a separable loose coupling transformer, a first resonant capacitor and a second resonant capacitor, one end of the first resonant capacitor is connected to the first sine wave generation unit and the first main control unit, and the other end of the first resonant capacitor is connected to a primary coil of the separable loose coupling transformer; and one end of the second resonance capacitor is connected with the second sine wave generating unit and the second main control unit, and the other end of the second resonance capacitor is connected with a secondary coil of the separable loose coupling transformer. The primary coil and the secondary coil of the transformer can be separated from each other, and the transformer is convenient to disassemble.
Specifically, the first sampling unit and the second sampling unit are respectively a first sampling resistor and a second sampling resistor, one end of the first sampling resistor is connected with the second resonance capacitor, and the other end of the first sampling resistor is grounded; one end of the second sampling resistor is connected with the first resonant capacitor, and the other end of the second sampling resistor is grounded.
In the invention, the first main control unit and the second main control unit are connected without a wire, a sine wave carrying information is transmitted from one end of the electromagnetic induction unit to the other end of the electromagnetic induction unit in an electromagnetic induction mode, the other end of the electromagnetic induction unit obtains consistent power of an alternating current signal due to the effect of transmitting alternating current signals and other power by a transformer, the information to be transmitted by the first main control unit can be obtained by analyzing the power value of the alternating current signal by the second main control unit, and the whole process has no wire for signal transmission, namely the concept of wireless communication.
Further, the first sine wave generation unit comprises a first driving circuit, a first switch tube, a second driving circuit and a second switch tube, wherein the first switch tube and the second switch tube are both N-channel enhanced MOSFETs, one end of the first driving circuit is connected with the first main control unit, the other end of the first driving circuit is connected with the grid electrode of the first switch tube, one end of the second driving circuit is connected with the first main control unit, the other end of the second driving circuit is connected with the grid electrode of the second switch tube, the drain electrode of the first switch tube is connected with the first power control unit, the source electrode of the first switch tube is connected with the drain electrode of the second switch tube, the source electrode of the second switch tube is grounded, and a lead is led out between the source electrode of the first switch tube and the drain electrode of the second switch tube to serve as the output end of the first sine wave generation unit and is connected with the electromagnetic induction unit.
The electromagnetic induction unit is provided with a resonant capacitor and a wound coil, so that an LC frequency selection circuit is formed, and a first harmonic wave, namely a sine wave, can be selected from square waves output between the source electrode of the first switching tube and the drain electrode of the second switching tube.
By adopting the structure, when the first main control unit outputs the same PWM square wave on the port connected with the first drive circuit and the second drive circuit, the square wave with the same period but different amplitude with the PWM square wave is output between the source electrode of the first switch tube and the drain electrode of the second switch tube.
Specifically, the first power control unit is a first boost circuit, the boost circuit is controlled by the first main control unit, and since the switching tube only has a switching function, the square wave amplitude output between the source electrode of the first switching tube and the drain electrode of the second switching tube is the voltage value output in the boost circuit.
Similarly, the second sine wave generation unit comprises a third driving circuit, a third switching tube, a fourth driving circuit and a fourth switching tube, the third switching tube and the fourth switching tube are both N-channel enhancement type MOSFETs, one end of the third driving circuit is connected with the second main control unit, the other end of the third driving circuit is connected with the grid electrode of the third switching tube, one end of the fourth driving circuit is connected with the second main control unit, the other end of the fourth driving circuit is connected with the grid electrode of the fourth switching tube, the drain electrode of the third switching tube is connected with the second power control unit, the source electrode of the third switching tube is connected with the drain electrode of the fourth switching tube, the source electrode of the fourth switching tube is grounded, and a lead is led out between the source electrode of the third switching tube and the drain electrode of the fourth switching tube to serve as the output end of the second sine wave generation unit and is connected with the.
Specifically, the second power control unit is a second boost circuit.
Further, as shown in fig. 4, the invention also provides an air conditioner dc motor power supply system, the power supply system comprises a main control side power supply MCU, a power amplifier, a direct current voltage source, a third resonant capacitor, a separable loose coupling power supply transformer, a fourth resonant capacitor, a rectifying and filtering unit, a switching power supply and a direct current motor, the main control side power supply MCU and the direct current voltage source are both connected with a power amplifier, the power amplifier is connected with a primary coil of a separable loose coupling power supply transformer through a third resonant capacitor, the secondary coil of the separable loose coupling power supply transformer is connected with the rectifying and filtering unit through a fourth resonant capacitor, the rectification filter unit is connected with the direct current motor on one hand to supply power to the direct current motor and is connected with the switch power supply on the other hand, the switching power supply converts the high-voltage direct current output by the rectifying and filtering unit into low-voltage direct current for the rear-stage chip.
Furthermore, a main control side power supply MCU of the direct current motor power supply system and a first main control unit of the wireless communication system share the same MCU chip, a separable loose coupling power supply transformer of the direct current motor power supply system and an electromagnetic induction unit of the wireless communication system share the same separable loose coupling transformer, and a second main control unit of the wireless communication system is connected with a control panel of a direct current motor of the direct current motor power supply system and used for acquiring related information of the direct current motor.
The invention also provides an air conditioner direct current motor power supply system which uses the wireless communication system.
The wireless communication system can be used for communication transmission of the direct current motor. When the first main control unit, the first power control unit, the first sine wave generation unit and the second switch circuit are arranged on the control board side of the direct current motor, and the second main control unit, the second power control unit, the second sine wave generation unit and the first switch circuit are arranged on the motor side of the direct current motor, the function of bidirectional information transmission between the direct current motor control board and the direct current motor can be realized.
When the direct current motor control board needs to transmit the Vsp signal, the control board of the direct current motor controls the second switch circuit to be switched off, and the Vsp signal is transmitted to the direct current motor according to the method.
When the direct current motor needs to transmit FG signals, the direct current motor side sends signals, and the direct current motor control board receives the signals. In this state, the direct current motor side is in a receiving state, the first main control unit stops the output of the PWM wave, the first switch circuit is opened, and the current rotating speed of the motor is sensed according to the demodulation of the FG signal.
The invention has the advantages that: but wireless control direct current fan has saved longer physics line, convenient to detach. The circuit structure is simple and easy to realize. Wireless communication can be achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A wireless communication system is characterized by comprising a first main control unit and a second main control unit, wherein the first main control unit is connected with a first sine wave generation unit and can control the first sine wave generation unit to generate sine waves with preset frequency; the first main control unit is also connected with the first power control unit and used for sending a first power control signal to the first power control unit; the first power control unit is also connected with the first sine wave generation unit and can control the power of the sine wave generated by the first sine wave generation unit; the first sine wave generating unit is connected with a primary coil of the electromagnetic induction unit, a secondary coil of the electromagnetic induction unit is connected with the second main control unit, a first switch circuit is arranged on a circuit connecting the secondary coil of the electromagnetic induction unit and the second main control unit, and the first switch circuit can close or disconnect the circuit connecting the secondary coil of the electromagnetic induction unit and the second main control unit; the second main control unit is connected with the second sine wave generating unit and can control the second sine wave generating unit to generate sine waves with preset frequency; the second main control unit is also connected with a second power control unit and used for sending a second power control signal to the second power control unit, the second power control unit is also connected with a second sine wave generation unit, and the second power control unit can control the power of the sine wave generated by the second sine wave generation unit; the second sine wave generating unit is connected with a secondary coil of the electromagnetic induction unit, a primary coil of the electromagnetic induction unit is connected with the first main control unit, a second switch circuit is arranged on a circuit connected with the primary coil of the electromagnetic induction unit and the first main control unit, and the second switch circuit can close or disconnect the circuit connected with the primary coil of the electromagnetic induction unit and the first main control unit.
2. The wireless communication system according to claim 1, wherein a first sampling unit and a first amplifying unit are further connected to a line connecting the secondary coil of the electromagnetic induction unit and the second main control unit.
3. The wireless communication system according to claim 2, wherein a second sampling unit and a second amplifying unit are further connected to a line connecting the primary coil of the electromagnetic induction unit and the first master control unit.
4. The wireless communication system according to claim 2, wherein the electromagnetic induction unit includes a separable loose coupling transformer, a first resonant capacitor, and a second resonant capacitor, one end of the first resonant capacitor is connected to the first sine wave generation unit and the first main control unit, and the other end of the first resonant capacitor is connected to a primary coil of the separable loose coupling transformer; and one end of the second resonance capacitor is connected with the second sine wave generating unit and the second main control unit, and the other end of the second resonance capacitor is connected with a secondary coil of the separable loose coupling transformer.
5. The wireless communication system according to claim 4, wherein the first sampling unit and the second sampling unit are a first sampling resistor and a second sampling resistor, respectively, one end of the first sampling resistor is connected to the second resonant capacitor, and the other end of the first sampling resistor is grounded; one end of the second sampling resistor is connected with the first resonant capacitor, and the other end of the second sampling resistor is grounded.
6. The wireless communication system according to claim 1, wherein the first sine wave generating unit comprises a first driving circuit, a first switch tube, a second driving circuit and a second switch tube, the first switch tube and the second switch tube are both N-channel enhanced MOSFETs, one end of the first drive circuit is connected with the first main control unit, the other end is connected with the grid electrode of the first switch tube, one end of the second driving circuit is connected with the first main control unit, the other end of the second driving circuit is connected with the grid electrode of the second switch tube, the drain electrode of the first switch tube is connected with the first power control unit, the source electrode of the first switch tube is connected with the drain electrode of the second switch tube, the source electrode of the second switch tube is grounded, and a lead is led out between the source electrode of the first switch tube and the drain electrode of the second switch tube and serves as the output end of the first sine wave generating unit, and the lead is connected with the electromagnetic induction unit.
7. The wireless communication system of claim 6, wherein the first power control unit is a first boost circuit.
8. The wireless communication system according to claim 7, wherein the second sine wave generation unit comprises a third driving circuit, a third switching tube, a fourth driving circuit and a fourth switching tube, wherein the third switching tube and the fourth switching tube are both N-channel enhancement type MOSFETs, one end of the third driving circuit is connected to the second main control unit, and the other end of the third driving circuit is connected to a gate of the third switching tube; one end of the fourth driving circuit is connected with the second main control unit, the other end of the fourth driving circuit is connected with a grid electrode of a fourth switching tube, a drain electrode of the third switching tube is connected with the second power control unit, a source electrode of the third switching tube is connected with a drain electrode of the fourth switching tube, a source electrode of the fourth switching tube is grounded, and a lead is led out between the source electrode of the third switching tube and the drain electrode of the fourth switching tube to serve as an output end of the second sine wave generation unit and is connected with the electromagnetic induction unit.
9. The wireless communication system of claim 8, wherein the second power control unit is a second boost circuit.
10. An air conditioner DC motor power supply system, characterized in that the power supply system uses the wireless communication system of any claim 1-9, the power supply system includes a main control side power supply MCU, a power amplifier, a DC voltage source, a third resonant capacitor, a detachable loose coupling power supply transformer, a fourth resonant capacitor, a rectifying and filtering unit, a switch power supply and a DC motor, the main control side power supply MCU and the DC voltage source are both connected with the power amplifier, the power amplifier is connected with the primary coil of the detachable loose coupling power supply transformer through the third resonant capacitor, the secondary coil of the detachable loose coupling power supply transformer is connected with the rectifying and filtering unit through the fourth resonant capacitor, the rectifying and filtering unit is connected with the DC motor on one hand and the switch power supply on the other hand, the main control side power supply MCU of the DC motor power supply system and the first main control unit of the wireless communication system share the same MCU chip, the detachable loose coupling power supply transformer of the direct current motor power supply system and the electromagnetic induction unit of the wireless communication system share the same detachable loose coupling transformer, and the second main control unit of the wireless communication system is connected with the control panel of the direct current motor power supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104980.2A CN111275952B (en) | 2019-02-01 | 2019-02-01 | Wireless communication system and air conditioner direct current motor power supply system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104980.2A CN111275952B (en) | 2019-02-01 | 2019-02-01 | Wireless communication system and air conditioner direct current motor power supply system using same |
Publications (2)
| Publication Number | Publication Date |
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| CN111275952A true CN111275952A (en) | 2020-06-12 |
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