Motor rotating speed compensation device and electronic equipment

Abstract

The utility model discloses a motor rotating speed compensation device and electronic equipment, and belongs to the technical field of power electronics. The motor rotating speed compensation device is used for compensating the rotating speed of motors in fascia guns with different structural compactedness, and comprises a detection unit of which one end is connected with the motor and which is used for detecting the no-load current value of the motor and outputting a detection signal; one end of the main control unit is connected with the other end of the detection unit, and the main control unit is used for outputting a control signal when the no-load current value is out of a preset current value range; one end of the driving unit is connected with the other end of the main control unit, the other end of the driving unit is connected with the motor, and the driving unit is used for outputting a compensation signal according to the control signal to compensate the rotating speed of the motor. Based on the relation among the no-load current value of the motor, the rotating speed of the motor and the structural compactness, the rotating speed of the motor can be detected by detecting the no-load current of the motor, so that the rotating speed is compensated, and the consistency of the rotating speeds of motors in fascia guns with different structural compacts is improved.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a motor speed compensation device and electronic equipment. Background Art

[0002] The fascia gun is a type of massage device that performs massage by rotating the eccentric wheel on the motor to drive the massage head back and forth. The speed of the motor will greatly affect the user experience.

[0003] The internal motor of the fascia gun on the market is a brushed motor, and when the brushed motor is not equipped with a Hall sensor, the motor speed cannot be obtained. The market practice is to drive different gears with different effective voltages, so that the speed of each gear falls roughly within a range. However, due to the inconsistent compactness of the fascia gun structure during assembly, the friction force is different, and the speed is greatly different when driven by the same voltage, which affects the user experience. Utility Model Content

[0004] The main purpose of this application is to provide a motor speed compensation device and electronic equipment, aiming to solve the technical problem of how to improve the consistency of the motor speed inside fascia guns with different structural compactness.

[0005] To achieve the above-mentioned purpose, the present application provides a motor speed compensation device for compensating the speed of the motor inside the fascia gun with different structural compactness, and the motor speed compensation device includes:

[0006] A detection unit, one end of which is connected to the motor, and the detection unit is used to detect the no-load current value of the motor and output a detection signal;

[0007] a main control unit, one end of which is connected to the other end of the detection unit, and the main control unit is used to output a control signal when the no-load current value included in the detection signal is outside a preset current value range;

[0008] A drive unit, one end of the drive unit is connected to the other end of the main control unit, and the other end of the drive unit is connected to the motor, and the drive unit is used to output a compensation signal according to the control signal to compensate for the rotation speed of the motor.

[0009] Optionally, when the no-load current value is greater than the maximum value of the preset current value range, the detection unit outputs a first detection signal, the main control unit outputs a first control signal according to the first detection signal, and the drive unit outputs a first compensation signal according to the first control signal to increase the speed of the motor.

[0010] Optionally, when the no-load current value is less than the minimum value of the preset current value range, the detection unit outputs a second detection signal, the main control unit outputs a second control signal according to the second detection signal, and the drive unit outputs a second compensation signal according to the second control signal to reduce the speed of the motor.

[0011] Optionally, the motor speed compensation device further includes:

[0012] A key unit, the key unit is connected to the main control unit, and the key unit is used to output a start signal to the main control unit.

[0013] Optionally, the button unit includes:

[0014] A start button and a start circuit, wherein the start button is connected to the start circuit, the start circuit is connected to the main control unit, and the start circuit is used to output a start signal to the main control unit when the start button is pressed.

[0015] Optionally, when the main control unit receives the start signal, the main control unit controls the drive unit to output a preset standard voltage to drive the motor to operate.

[0016] Optionally, when the working voltage of the motor is the preset standard voltage, the main control unit controls the detection unit to detect the no-load current value of the motor.

[0017] Optionally, the detection unit comprises an analog-to-digital converter.

[0018] Optionally, the driving unit includes a PWM driving circuit.

[0019] In addition, to achieve the above-mentioned purpose, the present application also provides an electronic device, which includes the motor speed compensation device as described above.

[0020] The present application proposes a motor speed compensation device and an electronic device, the motor speed compensation device is used to compensate the speed of the motor inside the fascia gun with different structural compactness, the motor speed compensation device comprises: a detection unit, one end of the detection unit is connected to the motor, the detection unit is used to detect the no-load current value of the motor and output a detection signal; a main control unit, one end of the main control unit is connected to the other end of the detection unit, the main control unit is used to output a control signal when the no-load current value included in the detection signal is outside the preset current value range; a driving unit, one end of the driving unit is connected to the other end of the main control unit, the other end of the driving unit is connected to the motor, the driving unit is used to output a compensation signal according to the control signal to compensate for the speed of the motor. The present application is based on the relationship between the no-load current value, motor speed and structural compactness of the motor, that is, when the structure is too tight, the friction resistance is too large, resulting in a low speed and a large no-load current; when the structure is too loose, the friction resistance is too small, resulting in a large speed and a small no-load current. The motor speed can be detected by detecting the no-load current of the motor, thereby compensating the speed and improving the consistency of the speed of the motor inside the fascia gun with different structural compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a motor speed compensation device provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of a supplementary structure of a motor speed compensation device provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a key unit in a motor speed compensation device provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0026] Description of Figure Numbers:

[0027] Label name Label name 30 Key unit 11 Detection unit 12 Main control unit 13 Drive unit 31 Start button 32 Startup Circuit 01 Electronic devices 02 Motor speed compensation device

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0032] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] It should also be understood that the references to "one embodiment" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Thus, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0034] The fascia gun is a type of massage device that performs massage by rotating the eccentric wheel on the motor to drive the massage head back and forth. The speed of the motor will greatly affect the user experience.

[0035] The internal motor of the fascia gun on the market is a brushed motor, and when the brushed motor is not equipped with a Hall sensor, the motor speed cannot be obtained. The market practice is to drive different gears with different effective voltages, so that the speed of each gear falls roughly within a range. However, due to the inconsistent compactness of the fascia gun structure during assembly, the friction force is different, and the speed is greatly different when driven by the same voltage, which affects the user experience.

[0036] Based on this, the present application proposes a motor speed compensation device and an electronic device, the motor speed compensation device is used to compensate the speed of the motor inside the fascia gun with different structural compactness, the motor speed compensation device includes: a detection unit, one end of the detection unit is connected to the motor, the detection unit is used to detect the no-load current value of the motor and output a detection signal; a main control unit, one end of the main control unit is connected to the other end of the detection unit, the main control unit is used to output a control signal when the no-load current value included in the detection signal is outside the preset current value range; a drive unit, one end of the drive unit is connected to the other end of the main control unit, the other end of the drive unit is connected to the motor, the drive unit is used to output a compensation signal according to the control signal to compensate for the speed of the motor. The present application is based on the relationship between the no-load current value, motor speed and structural compactness of the motor, that is, when the structure is too tight, the friction resistance is too large, resulting in a low speed and a large no-load current; when the structure is too loose, the friction resistance is too small, resulting in a large speed and a small no-load current. The motor speed can be detected by detecting the no-load current of the motor, thereby compensating the speed and improving the consistency of the speed of the motor inside the fascia gun with different structural compactness.

[0037] The present application embodiment provides a motor speed compensation device, referring to Figure 1 , Figure 1 A schematic diagram of the structure of a motor speed compensation device provided in an embodiment of the present application, wherein the motor speed compensation device is used to compensate the speed of the motor inside the fascia gun with different structural compactness, including:

[0038] A detection unit 11, one end of which is connected to the motor, and the detection unit 11 is used to detect the no-load current value of the motor and output a detection signal;

[0039] A main control unit 12, one end of which is connected to the other end of the detection unit 11, and the main control unit 12 is used to output a control signal when the no-load current value included in the detection signal is outside a preset current value range;

[0040] A drive unit 13, one end of the drive unit 13 is connected to the other end of the main control unit 12, and the other end of the drive unit 13 is connected to the motor. The drive unit 13 is used to output a compensation signal according to the control signal to compensate for the rotation speed of the motor.

[0041] In this embodiment, the motor speed compensation device is mainly used for fascia guns, but is not limited to fascia guns. Different fascia guns have different friction forces due to different structural compactness. Under the same voltage drive, the speeds of different fascia guns are quite different. There is a certain correlation between the structural compactness of the fascia gun and its no-load current. The tighter the structure, the greater the friction resistance, resulting in a lower speed and a larger no-load current; the looser the structure, the smaller the friction resistance, resulting in a higher speed and a smaller no-load current. Therefore, by collecting the no-load current, the compactness of the structure can be judged, thereby compensating for the speed of the motor in the fascia gun.

[0042] The motor speed compensation device includes a detection unit 11, a main control unit 12 and a drive unit 13. The motor inside the fascia gun is connected to the eccentric wheel, which drives the massage head of the fascia gun to move back and forth for massage. Therefore, the friction between the motor and the eccentric wheel, and between the eccentric wheel and the massage head will be different due to the compactness of the structure, which will lead to different speeds; the detection unit 11 is connected to the motor and is used to detect the no-load current of the motor. The no-load current can be detected by using a current detection element such as a current sensor. The detection unit 11 outputs the detected no-load current value to the main control unit 12 in the form of a detection signal. The main control unit 12 determines whether the no-load current value is within the preset current value range. When the no-load current value is outside the preset current value range, a control signal is output to control the drive unit 13 to adjust the speed. The drive unit 13 increases or decreases the speed of the motor according to the control signal to achieve the effect of compensating the speed. Among them, the preset current value range refers to the no-load current value of the motor under the standard working voltage when the compactness of the fascia gun structure is an ideal value. A reasonable error range is set on the basis of the no-load current value to obtain the preset current value range.

[0043] This embodiment implements no-load current detection on the fascia gun. The no-load current of the motor is collected by the detection unit 11. The main control unit 12 determines whether the motor speed is too high and the specific situation of the structural compactness of the fascia gun, thereby controlling the drive unit 13 to increase the speed of the motor of the fascia gun with a too tight structure, and reduce the speed of the motor of the fascia gun with a too loose structure. By compensating the speed of the motor inside the fascia gun, the consistency of the speed is improved, thereby improving the user experience.

[0044] In some feasible embodiments, when the no-load current value is greater than the maximum value of the preset current value range, the detection unit 11 outputs a first detection signal, the main control unit 12 outputs a first control signal according to the first detection signal, and the drive unit 13 outputs a first compensation signal according to the first control signal to increase the speed of the motor.

[0045] In this embodiment, when the no-load current value is greater than the preset current value range, it means that the structure of the fascia gun is too compact. Compared with the fascia gun with ideal structural compactness, under the same voltage drive, the motor of the fascia gun with high structural compactness is subject to greater friction resistance and lower rotation speed, which does not meet the standard. Therefore, the rotation speed needs to be increased. At this time, the detection unit 11 outputs a first detection signal to the main control unit 12, which includes information that the no-load current value is greater than the preset current value range, and then the main control unit 12 outputs a first control signal to the drive unit 13, and then the drive unit 13 outputs a first compensation signal to the motor. The first compensation signal may be to increase the driving voltage.

[0046] In some feasible embodiments, when the no-load current value is less than the minimum value of the preset current value range, the detection unit 11 outputs a second detection signal, the main control unit 12 outputs a second control signal according to the second detection signal, and the drive unit 13 outputs a second compensation signal according to the second control signal to reduce the speed of the motor.

[0047] In this embodiment, when the no-load current value is less than the preset current value range, it means that the structure of the fascia gun is too loose. Compared with the fascia gun with ideal structural compactness, under the same voltage drive, the motor of the fascia gun with low structural compactness is subject to smaller friction resistance and higher rotation speed, which does not meet the standard. Therefore, the rotation speed needs to be reduced. At this time, the detection unit 11 outputs a second detection signal to the main control unit 12, which includes information that the no-load current value is less than the preset current value range, and then the main control unit 12 outputs a second control signal to the drive unit 13, and then the drive unit 13 outputs a second compensation signal to the motor. The second compensation signal may be to reduce the driving voltage.

[0048] It is worth adding that when the no-load current value is within the preset current value range, it indicates that the structural compactness of the fascia gun meets the standard, and the main control unit 12 receives the third detection signal from the detection unit 11, but does not output a control signal.

[0049] Reference Figure 2 In some feasible embodiments, the motor speed compensation device further includes:

[0050] A button unit 30 , wherein the button unit 30 is connected to the main control unit 12 , and the button unit 30 is used to output a start signal to the main control unit 12 .

[0051] In this embodiment, the electric rotation speed compensation device also includes a button unit 30, and the button unit 30 is used to make the fascia gun enter the compensation calibration mode. When the button unit 30 outputs a start signal to the main control unit 12, the fascia gun enters the compensation calibration mode.

[0052] Reference Figure 3 In some feasible embodiments, the key module 30 includes:

[0053] A start button 31 and a start circuit 32, wherein the start button 31 is connected to the start circuit 32, and the start circuit 32 is connected to the main control unit 12, and the start circuit 32 is used for outputting a start signal to the main control unit 12 when the start button 31 is pressed.

[0054] In this embodiment, the button unit 30 includes a start button 31 and a start circuit 32. When the start button 31 is pressed, the start circuit 32 is turned on, a start signal is output, the motor speed compensation device is started, and the fascia gun enters the compensation calibration mode. It should be noted that the start button 31 and the start circuit 32 are only used to start the fascia gun to enter the compensation calibration mode, and have no effect on other functions of the fascia gun.

[0055] In some feasible embodiments, when the main control unit 12 receives the start signal, the main control unit 12 controls the drive unit 13 to output a preset standard voltage to drive the motor to operate.

[0056] In this embodiment, since the preset current value range is measured when the fascia gun is in an ideal structural compactness and the motor is running at a preset standard voltage, in order to judge the structural compactness of each fascia gun, according to the principle of the control variable method, after the main control unit 12 receives the start signal, it is necessary to output a signal to the drive unit 13 to control the drive unit 13 to drive the motor at the preset standard voltage.

[0057] In some feasible embodiments, when the working voltage of the motor is the preset standard voltage, the main control unit 12 controls the detection unit 11 to detect the no-load current value of the motor.

[0058] In this embodiment, when the motor runs at a preset standard voltage, the main control unit 12 outputs a signal to the detection unit 11 to control the detection unit 11 to start detecting the no-load current of the motor. The no-load current at this time can be used to determine the structural compactness of the fascia gun.

[0059] In some feasible embodiments, the detection unit 11 includes an analog-to-digital converter.

[0060] In this embodiment, the detection unit 11 may be an analog-to-digital converter, or a current sensor, etc., as long as it can collect and output the no-load current value.

[0061] In some feasible embodiments, the driving unit 13 includes a PWM driving circuit.

[0062] In this embodiment, the drive unit 13 may be a PWM (Pulse Width Modulation) drive circuit. When the no-load current value is greater than the preset current value range, it proves that the structure is too tight, and the PWM duty cycle is increased at this time to increase the motor speed and overcome the friction resistance; when the no-load current value is less than the preset current value range, it proves that the structure is too loose, and the PWM duty cycle is reduced at this time to reduce the motor speed, thereby achieving compensation for the motor speed.

[0063] This embodiment provides a motor speed compensation device, which controls the fascia gun to enter the compensation calibration mode through the button unit. In this mode, the main control unit first controls the drive unit to drive the motor with a preset standard voltage, and then controls the acquisition unit to collect the no-load current value of the motor, and outputs the collected no-load current value to the main control unit. The main control unit judges the structural compactness of the fascia gun according to the no-load current value. When the structure is too tight, the drive unit is controlled to increase the speed. When the structure is too loose, the drive unit is controlled to reduce the speed, thereby achieving compensation for the motor speed. This application realizes the first detection of no-load current on a fascia gun, and by compensating for the speed of the motor inside the fascia gun, the consistency of the motor speed is improved, and the technical problem of large differences in motor speeds inside different fascia guns under the same voltage drive due to inconsistent structural compactness of the fascia gun is solved, thereby improving the user experience.

[0064] In addition, the present application embodiment also provides an electronic device 01, referring to Figure 4 The electronic device 01 includes the motor speed compensation device 02 provided in the above embodiment.

[0065] Since the electronic device proposed in this embodiment includes the motor speed compensation device proposed in the above embodiments, it has the beneficial effects of the above embodiments. The specific working process and principle of the motor speed compensation device are detailed in the motor speed compensation devices provided in the above embodiments, which will not be described one by one here, and are all within the protection scope of this embodiment.

[0066] It should be noted that the technical solutions of the various embodiments of the present application can be combined with each other, but it must be based on the fact that they can be implemented by technical personnel in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0067] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A motor speed compensation device, used to compensate the speed of the motor inside the fascia gun with different structural compactness, characterized in that: The motor speed compensation device comprises: A detection unit, one end of which is connected to the motor, and the detection unit is used to detect the no-load current value of the motor and output a detection signal; a main control unit, one end of which is connected to the other end of the detection unit, and the main control unit is used to output a control signal when the no-load current value included in the detection signal is outside a preset current value range; A drive unit, one end of the drive unit is connected to the other end of the main control unit, and the other end of the drive unit is connected to the motor, and the drive unit is used to output a compensation signal according to the control signal to compensate for the rotation speed of the motor.

2. The motor speed compensation device according to claim 1, characterized in that: When the no-load current value is greater than the maximum value of the preset current value range, the detection unit outputs a first detection signal, the main control unit outputs a first control signal according to the first detection signal, and the drive unit outputs a first compensation signal according to the first control signal to increase the speed of the motor.

3. The motor speed compensation device according to claim 1, characterized in that: When the no-load current value is less than the minimum value of the preset current value range, the detection unit outputs a second detection signal, the main control unit outputs a second control signal according to the second detection signal, and the drive unit outputs a second compensation signal according to the second control signal to reduce the speed of the motor.

4. The motor speed compensation device according to claim 1, characterized in that: The motor speed compensation device also includes: A key unit, the key unit is connected to the main control unit, and the key unit is used to output a start signal to the main control unit.

5. The motor speed compensation device according to claim 4, characterized in that: The key unit comprises: A start button and a start circuit, wherein the start button is connected to the start circuit, the start circuit is connected to the main control unit, and the start circuit is used to output a start signal to the main control unit when the start button is pressed.

6. The motor speed compensation device according to claim 5, characterized in that: When the main control unit receives the start signal, the main control unit controls the driving unit to output a preset standard voltage to drive the motor to operate.

7. The motor speed compensation device according to claim 6, characterized in that: When the working voltage of the motor is the preset standard voltage, the main control unit controls the detection unit to detect the no-load current value of the motor.

8. The motor speed compensation device according to claim 2, characterized in that: The detection unit includes an analog-to-digital converter.

9. The motor speed compensation device according to claim 2, characterized in that: The driving unit includes a PWM driving circuit.

10. An electronic device, characterized in that: The electronic device comprises the motor speed compensation device according to any one of claims 1 to 9.

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