CN112054742A - High-frequency signal driving motor circuit - Google Patents
High-frequency signal driving motor circuit Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/032—Reciprocating, oscillating or vibrating motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/06—Linear motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/085—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
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Abstract
The embodiment of the invention discloses a high-frequency signal driving motor circuit, which comprises: audio processing module, motor driver and motor, wherein: the audio processing module is electrically connected with the motor driver and used for generating a high-frequency signal, the motor driver is electrically connected with the motor, and the high-frequency signal drives a rotor of the motor to swing back and forth through a new high-frequency signal obtained after the high-frequency signal passes through the motor driver. The high-frequency signal of the target frequency generated by the audio processing module drives the motor through the motor driver, so that the rotor of the motor generates smooth reciprocating swing, and the noise generated when the motor operates is reduced.
Description
Technical Field
The invention relates to the technical field of motor driving, in particular to a high-frequency signal driving motor circuit.
Background
The motor has a wide application in life and production, in daily life, the motor is also applied to a plurality of protective articles, such as an electric toothbrush, a shaver, a beauty massager and the like, the motor provides power for the operation of the machine, the motor can generate irregular rotation and noise due to the change of the amplitude value or the frequency value of a signal for driving the motor, meanwhile, the normal rotation of the motor can bring certain sound, and the noise or the sound generated by the motor can reduce the comfort level of a user when using the electric article, for example, the linear motor of the electric toothbrush is a swing motor, the motor is driven by Pulse Width Modulation (PWM) square wave signals to swing at the same frequency, different swing forces are obtained by utilizing the size of duty ratio, and the control method can generate great transient impact in the operation process of the motor, therefore, high noise and not smooth swinging are generated, and how to drive the motor to make the motor move smoothly and reduce the noise generated by the motor becomes a problem to be solved.
Disclosure of Invention
In view of the above, it is desirable to provide a high frequency signal driving motor circuit, and an object of the present invention is to drive the motor circuit by using a pulse width modulation audio signal, so as to achieve the purpose of smooth motor motion and noise suppression.
A high frequency signal driven motor circuit, the circuit comprising: audio processing module, motor driver and motor, wherein:
the audio processing module is electrically connected with the motor driver and used for generating a high-frequency signal;
the motor driver is electrically connected with the motor, and the high-frequency signal drives the rotor of the motor to swing back and forth through a new high-frequency signal obtained after the motor driver.
Optionally, the audio processing module has a high-frequency signal output interface, and the high-frequency signal is a pulse width modulation audio signal;
the audio processing module comprises a central processing unit, a memory and an audio encoder, wherein the central processing unit is provided with a high-frequency signal output interface, the memory is electrically connected with the central processing unit, the central processing unit reads audio data from the memory, the central processing unit converts the read audio data into pulse width modulation audio signals, the high-frequency signal output interface of the central processing unit is electrically connected with the audio encoder, the central processing unit transmits the pulse width modulation audio signals to the audio encoder through the high-frequency signal output interface, and the audio encoder is electrically connected with the motor driver and used for transmitting the pulse width modulation audio signals to the motor driver.
Optionally, the audio encoder includes a digital pulse width modulation audio signal encoding module or the audio encoder includes an analog audio signal output interface and a digital audio power amplifier module.
Optionally, a first low-pass filter is disposed between the audio encoder and the motor driver, and the pulse width modulation audio signal generates an audio waveform of a target amplitude and frequency through the first low-pass filter.
Optionally, the first low-pass filter is an LC filter composed of at least one group of magnetic beads and a capacitor, or an LC filter composed of an inductor and a capacitor.
Optionally, the circuit still includes wireless communication module, wireless communication module with central processing unit electricity is connected, wireless communication module receives the audio data of external equipment transmission, and passes through central processing unit with audio encoder accomplishes signal processing, sends motor driver, wireless communication module includes bluetooth, Wi-Fi, LTE, mobile communication network or UWB.
Optionally, a second low-pass filter is disposed between the motor driver and the motor, and the second low-pass filter is configured to suppress electromagnetic interference.
Optionally, the second low-pass filter is an LC filter composed of at least one group of magnetic beads and a capacitor, or an LC filter composed of an inductor and a capacitor.
Optionally, the motor is a bidirectional motion motor or a linear motor.
Optionally, the digital audio power amplifier module is of a D type, a K type or a G type.
The embodiment of the invention has the following beneficial effects:
a high-frequency signal driving motor circuit according to the present invention includes: audio processing module, motor driver and motor, wherein: the audio processing module is electrically connected with the motor driver and used for generating a high-frequency signal, the motor driver is electrically connected with the motor, and the high-frequency signal drives a rotor of the motor to swing back and forth through a new high-frequency signal obtained after the high-frequency signal passes through the motor driver. The high-frequency signal of the target frequency generated by the audio processing module drives the motor through the motor driver, so that the rotor of the motor generates smooth reciprocating swing, and the noise generated when the motor operates is reduced.
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.
Wherein:
FIG. 1 is a schematic diagram of an exemplary high frequency signal drive motor circuit;
FIG. 2 is a detailed diagram of a high frequency signal driving motor circuit according to an embodiment;
FIG. 3 is another detailed schematic diagram of an embodiment of a high frequency signal driven motor circuit;
FIG. 4 is a schematic diagram of a high frequency signal driving motor circuit according to an embodiment;
FIG. 5 is a schematic diagram of another embodiment of a high frequency signal driving motor circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a circuit diagram of an embodiment of an over-clocking signal driven motor. Referring to fig. 1, a high frequency signal driving motor circuit includes: an audio processing module 101, a motor driver 102, and a motor 103, wherein: the audio processing module 101 is electrically connected to a motor driver 102 for generating a high frequency signal, the motor driver 102 is electrically connected to a motor 103, and the high frequency signal drives a rotor of the motor 103 to oscillate back and forth by a new high frequency signal obtained after the motor driver 102.
In the present embodiment, the motor 103 is a bi-directional motor or a linear motor. The rotation direction of the motor with bidirectional motion is determined by the rotation direction of the rotating magnetic field, the current phase sequence of the three-phase winding connected to the motor determines the rotation direction of the motor, and the rotating magnetic field rotates reversely as long as the phase sequence of any two-phase winding of the motor is changed, and the motor also rotates reversely. Linear motors are often described simply as rotary motors that are flattened and operate on the same principle, the mover is made of epoxy material that compresses the coils together, the magnetic track secures the magnet to the steel, the mover of the motor includes coil windings, a hall element circuit board, a thermistor and an electronic interface, in a rotary motor, the mover and the stator require rotary bearings to support the mover to ensure an air gap in the relative motion, likewise, a linear motor requires linear guides to maintain the position of the mover in the magnetic field generated by the magnetic track, as the rotary servo motor's encoder is mounted on the shaft to feed back the position, a linear encoder, which is a feedback device that feeds back the linear position, and which can directly measure the position of the load to improve the position accuracy of the load.
In an embodiment of the present application, a high frequency signal driving motor circuit includes: an audio processing module 101, a motor driver 102, and a motor 103, wherein: the audio processing module 101 is electrically connected to a motor driver 102 for generating a high frequency signal, the motor driver 102 is electrically connected to a motor 103, and the high frequency signal drives a rotor of the motor 103 to oscillate back and forth by a new high frequency signal obtained after the motor driver 102. The high frequency signal of the target frequency generated by the audio processing module 101 drives the motor 103 through the motor driver 102, so that the rotor of the motor 103 generates smooth reciprocating swing, thereby reducing the noise generated by the motor 103 during operation.
To more clearly illustrate the operation of the high frequency signal driving motor circuit of the present invention, please refer to fig. 2, which is a detailed schematic diagram of the high frequency signal driving motor circuit of the present invention.
In the embodiment of the present application, the audio processing module 101 has a high frequency signal output interface, the high frequency signal is a pulse width modulation audio signal, the audio processing module 101 includes a central processing unit 202, a memory 201 and an audio encoder 203, the central processing unit 202 has the high frequency signal output interface, the memory 201 is electrically connected to the central processing unit 202, the central processing unit 202 reads audio data from the memory 201, the central processing unit 202 converts the read audio data into the pulse width modulation audio signal, the high frequency signal output interface of the central processing unit 202 is electrically connected to the audio encoder 203, the central processing unit 202 transmits the pulse width modulation audio signal to the audio encoder 203 through the high frequency signal output interface, the audio encoder 203 is electrically connected to the motor driver 102 for transmitting the pulse width modulation audio signal to the motor driver 102, the output end of the motor driver 102 is connected to the motor 103, the pulse width modulation is an analog control mode, which modulates the bias of a transistor base or a MOS tube grid according to the change of corresponding load to change the conduction time of the transistor or the MOS tube so as to change the output of a switching voltage-stabilized power supply, and the mode can keep the output voltage of a power supply constant when the working condition changes, and is a very effective technology for controlling the analog circuit by using the digital signal of the microprocessor. The control mode of pulse width modulation is to control the on-off of the switch device of the inverter circuit to make the output end obtain a series of pulses with equal amplitude, these pulses are used to replace sine wave or required waveform, i.e. to generate a plurality of pulses in half period of the output waveform to make the equivalent voltage of each pulse be sine waveform, the obtained output is smooth and has less low harmonic wave, and the width of each pulse is modulated according to a certain rule to change the size of the output voltage of the inverter circuit and change the output frequency. Further, the audio processing module 101 may be disassembled into: the central processor 202 and the external audio encoder 203 or the central processor 202 itself comprises the audio encoder 203.
In this embodiment, the audio encoder 203 includes a digital pulse width modulation audio signal encoding module or the audio encoder includes an analog audio signal output interface and a digital audio power amplifier module, where the digital audio power amplifier module is of class D, class K, or class G. The D-type power amplifier is also called D-type power amplifier, the D-type power amplifier is also called digital amplifier, the audio signal is amplified by using a conversion switch circuit with extremely high frequency, the specific working principle is that the D-type power amplifier adopts an asynchronous modulation mode, when the period of the audio signal changes, the high-frequency carrier signal still keeps unchanged, therefore, when the audio frequency is lower, the number of the Pulse Width Modulation (PWM) carriers is still higher, so the D-type power amplifier is very beneficial to inhibiting the high-frequency carrier and reducing distortion, and the problem of mutual interference between the D-type power amplifier and fundamental waves does not exist, the volume of the D-type power amplifier with the power as high as 1000W is just as large as that of a VHS video tape, the D-type power amplifier is not suitable for being used as a broadband amplifier, but has more. The K-class power amplifier integrates an internal bootstrap booster circuit and various power amplifier circuits, the D-class power amplifier is only one of the digital power amplifiers with higher efficiency in numerous power amplifier circuits, the K-class power amplifier is the bootstrap booster circuit integrated in the K-class power amplifier according to needs and the required power amplifier circuit, and the D-class power amplifier is added if the demand efficiency is high. The class-G power amplifier fully utilizes the advantage that audio has a very high peak factor (10-20dB), most of the time, audio signals are in a lower amplitude, a higher peak value can be shown in a very short time, compared with a traditional amplifier, the class-G amplifier has higher efficiency, and the class-G amplifier has the important characteristics that a power supply part adopts two or more groups of voltages, low voltage is used in low-power operation, and high power is automatically switched to high voltage.
In the embodiment of the present application, an audio encoder 203 is disposed between the high-frequency signal output interface and the motor driver 102, and the audio encoder 203 is configured to convert a digital signal generated by the high-frequency signal output interface into an analog signal. The audio encoder 203 refers to a device having encoding and decoding functions in digital communication, and a CODEC or software supporting video and audio compression (CODEC) and Decompression (DEC). The CODEC technology can effectively reduce the space occupied by digital storage, and in a computer system, the resources of a CPU (central processing unit) can be saved by using hardware to complete the CODEC, so that the operating efficiency of the system is improved. The CODEC encodes and compresses the transmission of the audio/video digital signals after AD conversion, and the signals are decoded at a receiving end. One or 2 or even 3 or 4 square chips with pins can be found on the sound card, the area is generally 0.5-1.0 square centimeter, which is the CODEC, and the CODEC is the CODEC for multimedia digital signals and is mainly responsible for the conversion from digital signals to analog signals (DAC) and from analog signals to digital signals (ADC). No matter the audio accelerator or the I/O controller, the input and the output of the audio accelerator or the I/O controller are pure digital signals, if a Line Out jack on a sound card is used for outputting signals, the signals need to be converted and processed by a CODEC on the sound card, so that the quality of analog input and output of the sound card has an important relation with the conversion quality of the CODEC, the audio accelerator or the I/O controller determines the quality of digital signals inside the sound card, and the CODEC determines the quality of the analog input and output.
In an embodiment of the present application, a high frequency signal driving motor circuit includes: an audio processing module 101, a motor driver 102, and a motor 103, wherein: the audio processing module 101 has a high frequency signal output interface, the high frequency signal is a pulse width modulation audio signal, the audio processing module 101 comprises a central processing unit 202, a memory 201 and an audio encoder 203, the central processing unit 202 has the high frequency signal output interface, the memory 201 is electrically connected with the central processing unit 202, the central processing unit 202 reads audio data from the memory 201, the central processing unit 202 converts the read audio data into the pulse width modulation audio signal, the high frequency signal output interface of the central processing unit 202 is electrically connected with the audio encoder 203, the central processing unit 202 transmits the pulse width modulation audio signal to the audio encoder 203 through the high frequency signal output interface, the audio encoder 203 is electrically connected with the motor driver 102 and is used for transmitting the pulse width modulation audio signal to the motor driver 102, the output end of the motor driver 102 is connected with the motor 103, the new pulse width modulated audio signal obtained after the pulse width modulated audio signal passes through the motor driver 102 drives the rotor of the motor 103 to oscillate back and forth. The pwm audio signal of the target frequency generated by the audio processing module 101 drives the motor 103 through the motor driver 102, so that the rotor of the motor 103 generates a smooth reciprocating swing, thereby reducing the noise generated by the motor 103 during operation.
To more clearly illustrate the operation of the high frequency signal driving motor circuit of the present invention, please refer to fig. 3, which is another detailed diagram of the high frequency signal driving motor circuit of the present invention.
In the present embodiment, a first low pass filter 301 is disposed between the audio encoder 203 and the motor driver 102, and the pulse width modulated audio signal generates an audio waveform of a target amplitude and frequency through the first low pass filter 301.
The first low-pass filter 301 is an LC filter composed of at least one set of magnetic beads and a capacitor, or an LC filter composed of an inductor and a capacitor.
In the embodiment of the application, the high-frequency signal output interface outputs a high-frequency dynamically-changing Pulse Width Modulation (PWM) duty ratio signal to form dynamic duty ratio change with energy changing according to an audio waveform, the digital signal generates a pure analog signal with audio amplitude and frequency characteristics through the audio encoder 203, the analog signal performs Electromagnetic Interference (EMI) suppression after passing through the first low-pass filter 301, an audio waveform is generated, and the audio waveform obtains strong current driving capability through the audio amplifier 102 to drive the motor 103 to perform harmonic motion.
In an embodiment of the present application, a high frequency signal driving motor circuit includes: an audio processing module 101, a motor driver 102, and a motor 103, wherein: the audio processing module 101 has a high frequency signal output interface, the high frequency signal is a pulse width modulation audio signal, the audio processing module 101 comprises a central processing unit 202, a memory 201 and an audio encoder 203, the central processing unit 202 has the high frequency signal output interface, the memory 201 is electrically connected with the central processing unit 202, the central processing unit 202 reads audio data from the memory 201, the central processing unit 202 converts the read audio data into the pulse width modulation audio signal, the high frequency signal output interface of the central processing unit 202 is electrically connected with the audio encoder 203, the central processing unit 202 transmits the pulse width modulation audio signal to the audio encoder 203 through the high frequency signal output interface, the audio encoder 203 is electrically connected with the motor driver 102, a first low pass filter 301 is arranged between the audio encoder 203 and the motor driver 102, the pulse width modulation audio signal is subjected to noise suppression through the first low pass filter 301 and generates an audio signal with a target amplitude and the waveform, the pulse width modulation audio signal after noise suppression is transmitted to the motor driver 102, the output end of the motor driver 102 is connected with the motor 103, and the new pulse width modulation audio signal obtained after the pulse width modulation audio signal passes through the motor driver 102 drives the rotor of the motor 103 to swing back and forth. The pwm audio signal of the target frequency generated by the audio processing module 101 drives the motor 103 through the motor driver 102, so that the rotor of the motor 103 generates a smooth reciprocating swing, thereby reducing the noise generated by the motor 103 during operation.
To more clearly illustrate the operation of the high frequency signal driving motor circuit of the present invention, please refer to fig. 4 for a further detailed schematic diagram of the high frequency signal driving motor circuit of the present invention.
In the embodiment of the present application, a second low-pass filter 401 is provided between the motor driver 102 and the motor 103, and the second low-pass filter 401 is used to suppress electromagnetic interference.
In the embodiment of the present application, the second low-pass filter 401 is an LC filter composed of at least one set of magnetic beads and a capacitor, or an LC filter composed of an inductor and a capacitor.
Further, a second low-pass filter 401 is disposed between the motor driver 102 and the motor 103, the second low-pass filter 401 is configured to suppress electromagnetic interference, and the second low-pass filter 401 is an LC filter formed by at least one set of magnetic beads or inductors and capacitors and configured to reduce high-frequency noise, so that the motor 103 does simple harmonic motion with the high-frequency signal.
In an embodiment of the present application, a high frequency signal driving motor circuit includes: an audio processing module 101, a motor driver 102, and a motor 103, wherein: the audio processing module 101 has a high frequency signal output interface, the high frequency signal is a pulse width modulation audio signal, the audio processing module 101 comprises a central processing unit 202, a memory 201 and an audio encoder 203, the central processing unit 202 has the high frequency signal output interface, the memory 201 is electrically connected with the central processing unit 202, the central processing unit 202 reads audio data from the memory 201, the central processing unit 202 converts the read audio data into the pulse width modulation audio signal, the high frequency signal output interface of the central processing unit 202 is electrically connected with the audio encoder 203, the central processing unit 202 transmits the pulse width modulation audio signal to the audio encoder 203 through the high frequency signal output interface, the audio encoder 203 is electrically connected with the motor driver 102, a first low pass filter 301 is arranged between the audio encoder 203 and the motor driver 102, the pulse width modulation audio signal is subjected to noise suppression through the first low pass filter 301 and generates an audio signal with a target amplitude and the waveform, the pulse width modulation audio signal subjected to noise suppression is transmitted to the motor driver 102, the output end of the motor driver 102 is connected with the motor 103, a second low-pass filter 401 is arranged between the motor driver 102 and the motor 103, the second low-pass filter 401 is used for suppressing electromagnetic interference, a new pulse width modulation audio signal obtained after the motor driver 102 is subjected to secondary noise suppression through the second low-pass filter 401, and the final pulse width modulation audio signal drives the rotor of the motor 103 to swing back and forth. The pwm audio signal of the target frequency generated by the audio processing module 101 drives the motor 103 through the motor driver 102, so that the rotor of the motor 103 generates a smooth reciprocating swing, thereby reducing the noise generated by the motor 103 during operation.
To more clearly illustrate the operation of the high frequency signal driving motor circuit of the present invention, please refer to fig. 5, which is another detailed schematic diagram of the high frequency signal driving motor circuit of the present invention.
In this embodiment, the circuit further includes a wireless communication module 501, the wireless communication module 501 is electrically connected to the central processing unit 202, the wireless communication module 501 receives audio data transmitted by an external device, completes signal processing through the central processing unit 202 and the audio encoder 203, and sends the audio data to the motor driver 102, and the wireless communication module 501 includes bluetooth, Wi-Fi, LTE, a mobile communication network, or UWB.
In an embodiment of the present application, a high frequency signal driving motor circuit includes: an audio processing module 101, a motor driver 102, and a motor 103, wherein: the audio processing module 101 has a high frequency signal output interface, the high frequency signal is a pulse width modulation audio signal, the audio processing module 101 comprises a central processing unit 202, a memory 201 and an audio encoder 203, the central processing unit 202 has the high frequency signal output interface, the memory 201 is electrically connected with the central processing unit 202, the central processing unit 202 reads audio data from the memory 201, the central processing unit 202 converts the read audio data into the pulse width modulation audio signal, the high frequency signal output interface of the central processing unit 202 is electrically connected with the audio encoder 203, the central processing unit 202 transmits the pulse width modulation audio signal to the audio encoder 203 through the high frequency signal output interface, the audio encoder 203 is electrically connected with the motor driver 102, a first low pass filter 301 is arranged between the audio encoder 203 and the motor driver 102, the pulse width modulation audio signal is subjected to noise suppression through the first low pass filter 301 and generates an audio signal with a target amplitude and the waveform, the pulse width modulation audio signal subjected to noise suppression is transmitted to the motor driver 102, the output end of the motor driver 102 is connected with the motor 103, a second low-pass filter 401 is arranged between the motor driver 102 and the motor 103, the second low-pass filter 401 is used for suppressing electromagnetic interference, a new pulse width modulation audio signal obtained after the motor driver 102 is subjected to secondary noise suppression through the second low-pass filter 401, and the final pulse width modulation audio signal drives the rotor of the motor 103 to swing back and forth. More abundant audio signals can be acquired from external equipment according to the needs of a user by arranging the wireless communication module 501, the wireless communication module 501 is connected with the central processing unit 202 in the audio processing module 101, and the pulse width modulation audio signals with target frequency generated by the audio processing module 101 drive the motor 103 through the motor driver 102, so that the rotor of the motor 103 generates smooth reciprocating swing, and the noise generated when the motor 103 operates is reduced.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A high frequency signal driven motor circuit, the circuit comprising: audio processing module, motor driver and motor, wherein:
the audio processing module is electrically connected with the motor driver and used for generating a high-frequency signal;
the motor driver is electrically connected with the motor, and the high-frequency signal drives the rotor of the motor to swing back and forth through a new high-frequency signal obtained after the motor driver.
2. The high-frequency signal driving motor circuit according to claim 1, wherein the audio processing module has a high-frequency signal output interface, and the high-frequency signal is a pulse width modulation audio signal;
the audio processing module comprises a central processing unit, a memory and an audio encoder, wherein the central processing unit is provided with a high-frequency signal output interface, the memory is electrically connected with the central processing unit, the central processing unit reads audio data from the memory, the central processing unit converts the read audio data into pulse width modulation audio signals, the high-frequency signal output interface of the central processing unit is electrically connected with the audio encoder, the central processing unit transmits the pulse width modulation audio signals to the audio encoder through the high-frequency signal output interface, and the audio encoder is electrically connected with the motor driver and used for transmitting the pulse width modulation audio signals to the motor driver.
3. The high frequency signal driving motor circuit according to claim 2, wherein the audio encoder comprises a digital pulse width modulation audio signal encoding module or the audio encoder comprises an analog audio signal output interface and a digital audio power amplifier module.
4. The high-frequency signal driving motor circuit according to claim 3, wherein a first low-pass filter is provided between the audio encoder and the motor driver, and the pulse width modulated audio signal generates an audio waveform of a target amplitude and frequency by the first low-pass filter.
5. The high-frequency signal driving motor circuit according to claim 4, wherein the first low-pass filter is an LC filter comprising at least one set of magnetic beads and capacitors, or an LC filter comprising inductors and capacitors.
6. The high-frequency signal driving motor circuit according to claim 1, further comprising a wireless communication module electrically connected to the central processing unit, wherein the wireless communication module receives audio data transmitted from an external device, completes signal processing through the central processing unit and the audio encoder, and transmits the processed audio data to the motor driver, and the wireless communication module comprises bluetooth, Wi-Fi, LTE, a mobile communication network, or UWB.
7. The high-frequency signal driving motor circuit according to any one of claims 1 to 6, wherein a second low-pass filter for suppressing electromagnetic interference is provided between the motor driver and the motor.
8. The high-frequency signal driving motor circuit according to claim 7, wherein the second low-pass filter is an LC filter composed of at least one set of magnetic beads and capacitors, or an LC filter composed of inductors and capacitors.
9. The high-frequency signal driving motor circuit according to any one of claims 1 to 6, wherein the motor is a bi-directional motor or a linear motor.
10. The high-frequency signal driving motor circuit according to any one of claims 1 to 6, wherein the digital audio power amplifier module is of class D, K or G.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899425.6A CN112054742A (en) | 2020-08-31 | 2020-08-31 | High-frequency signal driving motor circuit |
| PCT/CN2021/104037 WO2022042028A1 (en) | 2020-08-31 | 2021-07-01 | High-frequency signal driving motor circuit |
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| CN202010899425.6A CN112054742A (en) | 2020-08-31 | 2020-08-31 | High-frequency signal driving motor circuit |
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| CN112054742A true CN112054742A (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022042028A1 (en) * | 2020-08-31 | 2022-03-03 | 深圳市云顶信息技术有限公司 | High-frequency signal driving motor circuit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480544A (en) * | 2010-11-24 | 2012-05-30 | 上海三旗通信科技股份有限公司 | Motor vibrating along with music amplitude and application |
| CN102572018A (en) * | 2010-12-07 | 2012-07-11 | 希姆通信息技术（上海）有限公司 | Mobile terminal with vibrating motor |
| JP5622070B2 (en) * | 2008-08-04 | 2014-11-12 | 日立金属株式会社 | Linear motor drive device |
| US20150381096A1 (en) * | 2014-06-26 | 2015-12-31 | Braun Gmbh | Personal hygiene device with resonant motor |
| CN106561000A (en) * | 2016-12-09 | 2017-04-12 | 天津贤睿科技发展有限公司 | Mobile terminal with waveform transformation circuit |
| CN108027596A (en) * | 2015-09-16 | 2018-05-11 | 深圳市大疆创新科技有限公司 | For the system, apparatus and method made a sound |
| CN210142988U (en) * | 2019-04-10 | 2020-03-13 | 广州皓醒湾科技有限公司 | Sine wave driving circuit |
| CN111385717A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Audio output circuit and mobile terminal |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424986C (en) * | 2006-08-25 | 2008-10-08 | 天津三星电机有限公司 | Device for controlling motor oscillating by audio frequency |
| CN106877783A (en) * | 2017-03-31 | 2017-06-20 | 珠海市魅族科技有限公司 | A kind of motor drive circuit, method and electronic equipment |
| CN110013432B (en) * | 2019-05-11 | 2024-02-06 | 卓德邦科技（深圳）有限公司 | High-frequency linear vibration massager |
| CN112054742A (en) * | 2020-08-31 | 2020-12-08 | 深圳市云顶信息技术有限公司 | High-frequency signal driving motor circuit |
| CN111935598A (en) * | 2020-08-31 | 2020-11-13 | 深圳市云顶信息技术有限公司 | Audio signal driving motor circuit |
| CN112022405A (en) * | 2020-08-31 | 2020-12-04 | 深圳市云顶信息技术有限公司 | Bone conduction audio frequency electric toothbrush |
-
2020
- 2020-08-31 CN CN202010899425.6A patent/CN112054742A/en active Pending
-
2021
- 2021-07-01 WO PCT/CN2021/104037 patent/WO2022042028A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5622070B2 (en) * | 2008-08-04 | 2014-11-12 | 日立金属株式会社 | Linear motor drive device |
| CN102480544A (en) * | 2010-11-24 | 2012-05-30 | 上海三旗通信科技股份有限公司 | Motor vibrating along with music amplitude and application |
| CN102572018A (en) * | 2010-12-07 | 2012-07-11 | 希姆通信息技术（上海）有限公司 | Mobile terminal with vibrating motor |
| US20150381096A1 (en) * | 2014-06-26 | 2015-12-31 | Braun Gmbh | Personal hygiene device with resonant motor |
| CN108027596A (en) * | 2015-09-16 | 2018-05-11 | 深圳市大疆创新科技有限公司 | For the system, apparatus and method made a sound |
| CN106561000A (en) * | 2016-12-09 | 2017-04-12 | 天津贤睿科技发展有限公司 | Mobile terminal with waveform transformation circuit |
| CN111385717A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Audio output circuit and mobile terminal |
| CN210142988U (en) * | 2019-04-10 | 2020-03-13 | 广州皓醒湾科技有限公司 | Sine wave driving circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022042028A1 (en) * | 2020-08-31 | 2022-03-03 | 深圳市云顶信息技术有限公司 | High-frequency signal driving motor circuit |
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| WO2022042028A1 (en) | 2022-03-03 |
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