CN114984448A - Electric stimulation massage device and control method thereof - Google Patents
Electric stimulation massage device and control method thereof Download PDFInfo
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- CN114984448A CN114984448A CN202210539185.8A CN202210539185A CN114984448A CN 114984448 A CN114984448 A CN 114984448A CN 202210539185 A CN202210539185 A CN 202210539185A CN 114984448 A CN114984448 A CN 114984448A
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- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
- A61N1/36031—Control systems using physiological parameters for adjustment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
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Abstract
The invention relates to the field of electric stimulation massagers, in particular to an electric stimulation massage device and a control method thereof. The electric stimulation massage device comprises a power supply, a control unit, a boosting unit, electrodes arranged in pairs, a pulse modulation circuit, a first detection circuit and a second detection circuit, wherein the control unit acquires impedance values between the electrodes arranged in pairs according to output voltage, resistance values of sampling resistors and sampling voltage. The invention obtains the current information of the electrical stimulation pulse signal of the pulse modulation circuit through the first detection circuit, obtains the voltage information of the electrical stimulation pulse signal through the second detection circuit, and quickly and accurately obtains the impedance value between the electrodes arranged in pairs, thereby judging the current state or the wearing state of the human body, and adapting to the next operation required to be carried out, such as the adjustment of input voltage, so as to meet the stingless requirement of electrical stimulation massage of a user.
Description
Technical Field
The invention relates to the field of electric stimulation massagers, in particular to an electric stimulation massage device and a control method thereof.
Background
The electric pulse electric stimulation massage device is attached to the skin of a human body through the electrode slice and outputs electric pulse electric energy to achieve the massage effect.
In the related art, the close contact degree between the electric pulse electric stimulation massage device and the human skin or the surface dryness of the human skin can affect the contact effect of the electric pulse electric stimulation massage device and the human skin. Different laminating effects should carry out the adjustment of voltage according to user's electric tolerance condition, and the voltage is on the high side when the prevention laminating effect is poor leads to the production of stabbing pain, perhaps prevents that the voltage is on the low side when laminating effect is good leads to massage effect weak.
The human body impedance value can be obtained by obtaining the electric energy information of the pulse modulation circuit, so that the fitting effect can be judged. However, the sampling circuit in the related art has the following problems:
1. the operational amplifier is adopted, and the power distribution condition is obtained through the voltage difference between the power supply end and the grounding end, so that the accuracy of wearing state detection can be improved, but the detection accuracy of the attaching effect is low, and the circuit is complex;
2. the fixed voltage is used as a reference voltage, and accurate judgment processing cannot be performed.
It should be noted that the above description is only for illustrating the inventive concept of the present application, and does not represent that the related art is the prior art.
Disclosure of Invention
The present invention provides an electrical stimulation massage device and a control method thereof to solve at least the problem of complicated detection of the impedance value of the body of the electrical stimulation massage device.
The technical scheme adopted by the invention for solving the technical problems is as follows: provided is an electrical stimulation massage apparatus including:
a power supply and control unit;
the boosting unit is respectively connected with the control unit and the power supply, boosts the input voltage of the power supply to a preset voltage under the control of the control unit and outputs the preset voltage to the outside through a voltage output end of the boosting unit;
the electrode is used for being attached to a part to be massaged;
the electric energy input end of the pulse modulation circuit is connected with the boosting unit, a first pulse transmission end and a second pulse transmission end of the pulse modulation circuit are respectively connected with an electrode, and the control end of the pulse modulation circuit is connected with the control unit;
the first detection circuit is respectively connected with the control unit and the voltage output end of the boosting unit, and the control unit obtains the output voltage of the boosting unit through the first detection circuit;
the second detection circuit is connected with the control unit, a sampling resistor of the second detection circuit is connected between the pulse modulation circuit and the ground end in series, and the control unit obtains sampling voltage of the sampling resistor through the second detection circuit; wherein the content of the first and second substances,
and the control unit acquires impedance values between the electrodes arranged in pairs according to the output voltage, the resistance value of the sampling resistor and the sampling voltage.
Preferably, the sampling resistor has a value range of 130 to 170 Ω.
Wherein, the preferred scheme is: the second detection circuit further comprises a first protection resistor, a first capacitor and a first voltage stabilizing diode, the control unit is connected between the pulse modulation circuit and the sampling resistor through the first protection resistor, the control unit is connected between the sampling resistor and the ground end through the first capacitor and the first voltage stabilizing diode respectively, and the anode of the first voltage stabilizing diode is grounded.
Wherein, the preferred scheme is: the second detection circuit further comprises a second protection resistor, and the second protection resistor is connected between the pulse modulation circuit and the sampling resistor in series; the resistance value ratio range of the sampling resistor to the second protection resistor is 1: 22 to 1: 38.
wherein, the preferred scheme is: the control unit stores a first model for calculating the impedance value between the electrodes, and the first model is
The R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining For sampling the resistance value of the resistor, V Transfusion system Is the output voltage of the booster cell, I Regulating device And outputting the pulse current for the pulse modulation circuit.
Wherein the content of the first and second substances,the preferred scheme is as follows: the control unit stores a second model for calculating the impedance value between the electrodes, and the second model is
Said R is Impedance(s) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining For sampling the resistance value of the resistor, V Transfusion system Is the output voltage of the booster cell, I Regulating device And outputting the pulse current for the pulse modulation circuit.
Wherein, the preferred scheme is: the electric stimulation massage apparatus according to claim 1 or 2, characterized in that: the control unit stores a third model for calculating the impedance value between the electrodes
The R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining For sampling the resistance value of the resistor, V Transfusion system Is the output voltage of the booster cell, I Regulating device Current for pulse output of pulse modulation circuit, R Surplus Is a preset margin of error.
Wherein, the preferred scheme is: the first detection circuit comprises a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor is respectively connected with a voltage output end of the boosting unit and the second voltage-dividing resistor, the other end of the second voltage-dividing resistor is grounded, the control unit is connected to a connection node between the first voltage-dividing resistor and the second voltage-dividing resistor to obtain the divided voltage of the second voltage-dividing resistor, and the control unit obtains the output voltage of the boosting unit according to the divided voltage of the second voltage-dividing resistor, the resistance value of the first voltage-dividing resistor and the resistance value of the second voltage-dividing resistor.
Wherein, the preferred scheme is: the control unit stores a fourth model for calculating the output voltage of the boosting unit, and the fourth model is
The V is Transfusion system Is the output voltage of the booster cell, V Is divided into 2 Is the partial pressure of a second voltage-dividing resistor, said R Is divided into 1 Is the resistance value of the first divider resistor, R Is divided into 2 Is the resistance of the second divider resistor.
Wherein, the preferred scheme is: the first detection circuit comprises a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor is respectively connected with a voltage output end of the boosting unit and the second voltage-dividing resistor, the other end of the second voltage-dividing resistor is grounded, the control unit is connected to a connection node between the first voltage-dividing resistor and the second voltage-dividing resistor to obtain the divided voltage of the second voltage-dividing resistor, and the control unit obtains the output voltage of the boosting unit according to the divided voltage of the second voltage-dividing resistor, the resistance value of the first voltage-dividing resistor and the resistance value of the second voltage-dividing resistor.
Wherein, the preferred scheme is: the control unit stores a fourth model for calculating the output voltage of the boosting unit, and the fourth model is
The V is Transfusion system Is the output voltage of the booster cell, V Is divided into 2 Is the voltage division of a second voltage division resistor, said R Is divided into 1 Is the resistance value of the first divider resistor, said R Is divided into 2 Is the resistance of the second divider resistor.
Wherein, the preferred scheme is: the resistance ratio range of the second voltage-dividing resistor to the first voltage-dividing resistor is 1: 37 to 1: 72.
wherein, the preferred scheme is: the second detection circuit further comprises a second capacitor, and the control unit is connected to a connection node between the second voltage-dividing resistor and the ground end through the second capacitor.
Preferably, the pulse modulation circuit further includes:
the control unit is respectively connected with the control ends of the first control switch and the second control switch to respectively control the on-off of the first control switch and the second control switch, the input end of the first control switch is connected with the electric energy input end, the output end of the second control switch is connected with the ground end, the output end of the first control switch is connected with one of the first pulse transmission end and the second pulse transmission end, and the input end of the second control switch is connected with the other of the first pulse transmission end and the second pulse transmission end.
Wherein, the preferred scheme is: the control arms are provided with two groups, the output ends of the two first control switches are respectively connected with the first pulse transmission end and the second pulse transmission end, and the input ends of the two second control switches are respectively connected with the first pulse transmission end and the second pulse transmission end.
Wherein, the preferred scheme is: the first control switch and the second control switch are both triodes.
Wherein, the preferred scheme is: the first pulse transmission end and the second pulse transmission end are both grounded through a bidirectional variable resistance diode.
Wherein, the preferred scheme is: the pulse modulation circuit is provided with a plurality of, and every pulse modulation circuit all disposes two electrodes.
Preferably, the boosting unit includes a power input end connected to the power supply, a boosting circuit, an energy storage circuit, a voltage relief circuit, and a voltage output end connected to the pulse modulation circuit, the input end of the boosting circuit is connected to the power input end, and the control end of the boosting circuit is connected to the control unit for boosting the voltage output by the power supply; the input end of the energy storage circuit is connected with the output end of the booster circuit, and the output end of the energy storage circuit is connected with the input end of the power supply; the control end of the pressure relief circuit is connected with the control unit, the input end of the pressure relief circuit is connected with the voltage output end, and the control unit is used for controlling the voltage boost circuit and/or the energy storage circuit to boost or/and control the pressure relief circuit to step down according to preset voltage and impedance values between electrodes arranged in pairs so as to control the voltage output end to output preset voltage to the pulse modulation circuit.
Preferably, the boost circuit comprises an inductor and an MOS transistor, one end of the inductor is connected with the input end of the boost circuit, and the other end of the inductor is connected with the output end of the boost circuit; the grid of MOS pipe with the control unit is connected, the drain electrode of MOS pipe is connected in the inductance with between the output of boost circuit, the source electrode ground connection of MOS pipe.
Wherein, the preferred scheme is: the boost circuit further comprises a third capacitor, one end of the third capacitor is connected between the inductor and the input end of the boost circuit, and the other end of the third capacitor is grounded.
Wherein, the preferred scheme is: the energy storage circuit is a capacitive energy storage circuit, the capacitive energy storage circuit comprises a fourth capacitor and a fifth capacitor which are connected in parallel between the input end and the output end of the energy storage circuit, and the other ends of the fourth capacitor and the fifth capacitor are grounded.
Wherein, the preferred scheme is: the voltage relief circuit comprises a first resistor, a fifth triode, a second resistor and a third resistor, the first resistor is connected between the control end of the voltage relief circuit and the base electrode of the fifth triode in series, and the emitter electrode of the fifth triode is grounded; one end of the third resistor is connected between the first resistor and the base electrode of the fifth triode, and the other end of the third resistor is grounded; the second resistor is connected in series between the input end of the voltage relief circuit and the collector of the fifth triode.
The technical scheme adopted by the invention for solving the technical problems is as follows: the control method is characterized by being applied to the electric stimulation massage device and comprising the following steps of:
the control unit controls the pulse modulation circuit to generate an electrical stimulation pulse signal;
sequentially and circularly controlling the electrodes arranged in pairs to output electrical stimulation pulse signals, and acquiring impedance values between the electrodes arranged in pairs;
and when the impedance value is abnormal, the next cycle stops controlling the electrodes which are arranged in pairs and correspond to the abnormal impedance value to output the electrical stimulation pulse signals.
Preferably, the control method further includes:
recording the impedance value of each electrical stimulation loop;
when the impedance value of an electrical stimulation loop is abnormal, a user is informed.
Preferably, an amplitude threshold or a safety value range is set, and the step of determining that the impedance value is abnormal includes:
when the recorded impedance value is out of the safe numerical range, judging that the corresponding electrical stimulation loop is abnormal;
or when the amplitude of any two impedance values exceeds the amplitude threshold value, judging that at least one corresponding electrical stimulation loop is abnormal.
Compared with the related technology, the invention has the advantages that the current information of the electrical stimulation pulse signal of the pulse modulation circuit is obtained through the first detection circuit, the voltage information of the electrical stimulation pulse signal is obtained through the second detection circuit, and the impedance value between the electrodes arranged in pairs is rapidly and accurately obtained, so that the current state or the wearing state of a human body is judged, and the next operation required to be carried out is adapted, such as the adjustment of input voltage, so that the stingless requirement of electrical stimulation massage of a user is met; meanwhile, judgment is carried out through two paths of sampling, sampling is accurate, the circuit is simple, the current entering the human body is efficiently and accurately obtained, the condition of the input voltage is dynamically obtained, the accuracy of abnormal monitoring is improved, and the complexity and the cost are effectively reduced.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic circuit diagram of an electrical stimulation massage device of the present invention;
FIG. 2 is a circuit schematic of the pulse modulation circuit of the present invention;
FIG. 3 is a circuit schematic of a second detection circuit of the present invention;
FIG. 4 is a schematic circuit diagram of a first detection circuit according to the present invention;
FIG. 5 is a circuit schematic of the pulse modulation circuit of the present invention;
FIG. 6 is a circuit schematic of the pulse modulation circuit of the present invention;
FIG. 7 is a circuit schematic of the boost unit of the present invention;
FIG. 8 is a circuit schematic of the boost unit of the present invention;
FIG. 9 is a flow chart of a control method of the present invention;
fig. 10 is a flowchart of a control method of notifying a user of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 8, the present invention provides a preferred embodiment of an electrical stimulation massage apparatus.
The electric stimulation massage device comprises a power supply 100, a control unit 600, a boosting unit 200, electrodes arranged in pairs, a pulse modulation circuit 300, a first detection circuit 400 and a second detection circuit 500, wherein the boosting unit 200 is respectively connected with the control unit 600 and the power supply 100, the boosting unit 200 boosts the input voltage of the power supply 100 to a preset voltage under the control of the control unit 600 and outputs the preset voltage outwards through the voltage output end of the boosting unit 200, the electrodes are used for being attached to a part to be massaged, the electric energy input end 311 of the pulse modulation circuit 300 is connected with the voltage output end of the boosting unit 200, the first pulse transmission end and the second pulse transmission end of the pulse modulation circuit 300 are respectively connected with one electrode, the control end of the pulse modulation circuit 300 is connected with the control unit 600, the first detection circuit 400 is respectively connected with the voltage output ends of the control unit 600 and the boosting unit 200, the control unit 600 obtains the output voltage of the boosting unit 200 through the first detection circuit 400, the second detection circuit 500 is connected with the control unit 600, the sampling resistor R1 of the second detection circuit 500 is connected in series between the pulse modulation circuit 300 and the ground, and the control unit 600 obtains the sampling voltage of the sampling resistor R1 through the second detection circuit 500; the control unit 600 obtains the impedance value between the electrodes arranged in pairs according to the output voltage, the resistance value of the sampling resistor R1, and the sampling voltage.
Specifically, the booster cell 200 is provided with a power input terminal, a voltage output terminal and a control terminal, the pulse modulation circuit 300 is provided with a control terminal, an electric energy input terminal 311, a ground terminal 312, a first pulse transmission terminal and a second pulse transmission terminal, the first detection circuit 400 includes a transmission terminal 420 and a detection terminal 410, the second detection circuit 500 also includes a transmission terminal 520 and a detection terminal 510, and the electrodes arranged in pairs include the first electrode 301 and the second electrode 302.
In one embodiment, the voltage boosting unit 200 is connected to the power supply 100 through a power supply input terminal, the power supply 100 supplies power to the voltage boosting unit 200, the voltage boosting unit 200 is further connected to the power input terminal 311 of the pulse modulation circuit 300 through a voltage output terminal, boosts the input voltage of the power supply 100 to a preset voltage and transmits the boosted voltage to the pulse modulation circuit 300 as the voltage value of the electrical stimulation pulse signal, and the voltage boosting unit 200 is further connected to the control unit 600 through a control terminal, and performs a voltage boosting operation under the control of the control unit 600 to boost the input voltage of the power supply 100 to the preset voltage.
In one embodiment, the pulse modulation circuit 300 is connected to the first electrode 301 and the second electrode 302 through the first pulse transmission terminal and the second pulse transmission terminal, respectively, the pulse modulation circuit 300 is further grounded through the ground terminal 312 to form a current loop, which is equivalent to a negative electrode connected to the power supply 100, the control terminal of the pulse modulation circuit 300 is connected to the control unit 600, the electric energy provided by the voltage boosting unit 200 is generated into a pulse signal under the control of the control unit 600, that is, an electrical stimulation pulse signal, when the first electrode 301 and the second electrode 302 are conducted, the first pulse transmission terminal outputs the electrical stimulation pulse signal through the first electrode 301, and the second pulse transmission terminal receives the electrical stimulation pulse signal through the second electrode 302 and is led out through the ground terminal 312 to form a pulse cycle. At this time, the first electrode 301 and the second electrode 302 are attached to the part to be massaged to realize the electrical conduction between the two, and the electrical stimulation pulse signal is input to the part to be massaged through the electrodes, so that the user experiences the electrical stimulation to form the massage touch feeling.
In one embodiment, the first detection circuit 400 and the second detection circuit 500 are both connected to the control unit 600 through their transmission terminals, the first detection circuit 400 is connected to the voltage output terminal of the voltage boost unit 200 through the detection terminal, and the second detection circuit 500 is connected to the sampling resistor R1 in parallel through the detection terminal 510. In order to reduce even the phenomenon that the current for placing the electrical stimulation pulse signal is too large to cause the part to be massaged to generate stabbing pain and enable a user to carry out the whole electrical stimulation massage process in the state of no stabbing pain, the control unit 600 firstly obtains the voltage value at the voltage output end of the voltage boosting unit 200 through the first detection circuit 400, namely the specific voltage value of the boosted input voltage of the power supply 100, so as to determine whether the preset voltage reaches the expected value, and the control unit 600 then obtains the sampling voltage on the sampling resistor R1 through the second detection circuit 500. Finally, the control unit 600 obtains the output voltage of the voltage boosting unit 200 and the sampling voltage of the sampling resistor R1, and stores the resistance value of the sampling resistor R1, obtains the impedance value between the electrodes arranged in pairs according to the output voltage, the resistance value of the sampling resistor R1 and the sampling voltage according to a preset algorithm, that is, obtains the current flowing through the sampling resistor R1 through the resistance value of the sampling resistor R1 and the sampling voltage, obtains the current value of the electrical stimulation pulse signal of the pulse modulation circuit 300, obtains the voltage value of the electrical stimulation pulse signal of the pulse modulation circuit 300 through the output voltage, obtains the whole total resistance value corresponding to the pulse modulation circuit 300 according to the current value and the voltage value of the electrical stimulation pulse signal, and uses the total resistance value as the impedance value between the electrodes arranged in pairs, or obtains the impedance value between the electrodes arranged in pairs by subtracting the resistance value of the sampling resistor R1 from the total resistance value, or subtracting the resistance value of the sampling resistor R1 from the total resistance value, and then subtracting a preset error margin to obtain the impedance value between the electrodes arranged in pairs, wherein the preset error margin may be the internal resistance generated by the lead or the component of the pulse modulation circuit 300, the internal resistance generated by the electrodes due to the material or shape problems of the electrodes, or the internal resistance generated by other different positions.
And the control unit 600 obtains the impedance value of the part to be massaged in real time through the above operations, and purposefully adjusts the output voltage of the boosting unit 200 according to the impedance value, thereby adjusting the current condition of the electrical stimulation pulse signal of the pulse modulation circuit 300, so that the part to be massaged can consistently and controllably maintain the current value of the electrical stimulation pulse signal in the massage process, the part to be massaged is prevented from being strongly electrically stimulated, and the massage without stabbing pain is realized.
In one embodiment, the control Unit 600 preferably includes a MUC and a peripheral circuit, and a Micro Control Unit (MCU), also called a Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip Microcomputer, is configured to appropriately reduce the frequency and specification of a Central Processing Unit (CPU), and integrate peripheral interfaces such as a memory (memory), a counter (Timer), a USB, an a/D converter, a UART, a PLC, a DMA, and the like, even an LCD driving circuit, on a Single Chip to form a Chip-level computer, which performs different combination control for different applications. Each pin of the MUC is connected to each functional module, such as the voltage boost unit 200, the pulse modulation circuit 300, the first detection circuit 400, and the second detection circuit 500, respectively, to control and detect the electrical pulse. Of course, the MCU can be realized by adopting a common MCU on the market, and the requirement on the performance of the MCU is not high.
As shown in FIG. 3, the present invention provides a preferred embodiment of the second detection circuit 500.
The second detection circuit 500 further includes a first protection resistor R3, a first capacitor C1 and a first zener diode D1, the control unit 600 is connected between the pulse modulation circuit 300 and the sampling resistor R1 through the first protection resistor R3, the control unit 600 is connected between the sampling resistor R1 and the ground end through a first capacitor C1 and a first zener diode D1, respectively, and an anode of the first zener diode D1 is grounded. Specifically, two ends of the sampling resistor R1 are respectively connected to the ground terminal 312 and the ground terminal of the pulse modulation circuit 300, the electric energy output from the pulse modulation circuit 300 flows through the sampling resistor R1, and the voltage of the sampling resistor R1 is obtained by the control unit 600; the first protection resistor R3 is respectively connected with the control unit 600 and the sampling resistor R1, so that the voltage input into the control unit 600 is prevented from being overlarge, voltage division processing is carried out, and the control unit 600 is effectively protected; the first capacitor C1 is arranged to filter the sampling signal, so that the accuracy of the sampling data is improved; voltage regulation is achieved by providing a first voltage regulator diode D1, preferably a zener diode.
Specifically, the sampling resistor R1 has a value range of 130 to 170 Ω, on one hand, the control unit 600 can conveniently identify the sampling voltage through the sampling resistor R1 with a large resistance value, and the setting of the amplifier is reduced, on the other hand, the electrode acts on the human body, the general human body impedance of the human body is 300 to 1500 Ω, and the wearing condition of the electrical stimulation massage device may cause the human body impedance to become large or small, even lower than 300 Ω, so the sampling resistor R1 should not be too large, and the resistance value of the sampling resistor R1 is too large, which easily causes energy loss, and also easily weakens the electrical stimulation effect of the electrical stimulation pulse signal. The sampling resistor R1 is preferably 150 Ω, and the error value is 1%, improving the detection accuracy. The first protection resistor R3 preferably has a value of 1K Ω, and an error value of 5%, which is certainly other values, and the high resistance of the first protection resistor R3 implements the control protection of the control unit 600, and the specific value also depends on the control unit 600, especially regarding the chip selection of the control unit 600, and is set according to the voltage borne by the pins of the chip. The first capacitor C1 is used for filtering, the capacity is selected, because the filtering is small capacitor filtering, 104 can be preferentially adopted, and the filtering is capacitor to ground, a smaller capacitor is needed to be connected in parallel to ground, the voltage value is not too high, 50V is preferentially adopted, only 10% of error value is adopted for filtering, and the cost is saved. The first voltage-regulator diode D1 preferably adopts a voltage-regulator diode BZT52C3V3S 3.3.3V, and can also be other voltage-regulator diodes, and is connected in series with the first protection resistor R3, so that higher stable voltage can be obtained through the series connection, and electronic components in the circuit are protected to prevent the electronic components from being broken down by high current.
In one embodiment, three algorithmic models are provided that calculate the impedance values between the electrodes.
In the first embodiment, the control unit 600 stores a first model for calculating the impedance value between the electrodes, where the first model is
The R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining To sample the resistance value of resistor R1, V Transfusion system Is the output voltage of the booster cell 200, I Regulating device A pulsed current is output to the pulse modulation circuit 300. First, pass through V Mining And R Mining Obtaining a current-through sampling resistor R1, i.e. the current I of the pulses output by the pulse modulation circuit 300 Regulating device By obtaining the output voltage V of the booster unit 200 Transfusion system Through V Transfusion system And I Regulating device The resistance value of the pulse modulation circuit 300 is obtained, the pulse output by the pulse modulation circuit 300 is the electrical stimulation pulse signal, and the resistance value of the pulse modulation circuit 300 is the impedance value of the electrodes arranged in pairs attached to the part to be massaged.
In the second embodiment, the control unit 600 stores a second model for calculating the impedance value between the electrodes, where the second model is
The R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining To sample the resistance value of resistor R1, V Transfusion system Is the output voltage of the booster cell 200, I Regulating device A pulsed current is output to the pulse modulation circuit 300. Compared with the first scheme, the resistance value of the pulse modulation circuit 300 is not only formed by the resistance values of the electrodes arranged in pairs attached to the part to be massaged, but also comprises the resistance value R of the sampling resistor R1 Mining The sampling resistor R1 of the present invention has a large value, and the difference between the resistance value of the sampling resistor R1 and the resistance value of the portion to be massaged is not very large, and is difficult to ignore, so as to improve the accuracy.
In a third embodiment, the control unit 600 stores a third model for calculating the impedance value between the electrodes, where the third model is
The R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining To sample the resistance value of resistor R1, V Transfusion system Is the output voltage of the booster cell 200, I Regulating device Output pulsed current for the pulse modulation circuit 300, R Surplus Is a preset margin of error. Compared with the second scheme, the second scheme adds the preset error margin, and the preset error margin can be generated by the lead or the component of the pulse modulation circuit 300The internal resistance can be internal resistance generated by the electrode due to the problems of the material or the shape of the electrode, or internal resistance generated by other different positions, wherein the preset error margin can be calculated through experiments or can be obtained through theoretical calculation, and the accuracy is further improved.
In an embodiment, the second detection circuit 500 further includes a second protection resistor R2, the second protection resistor R2 is connected in series between the pulse modulation circuit 300 and the sampling resistor R1, and the second protection resistor R2 is configured to reduce the amount of electric energy flowing into the control unit 600, or perform voltage division processing to reduce the voltage value input to the control unit 600, so as to protect the entire second detection circuit 500, and therefore, the second protection resistor R2 preferably takes a value of 5.1 Ω, which of course approaches this resistance value, and the accuracy also needs to be 1%.
Because the sampling resistor R1 has a value range of 130 to 170 Ω, and the second protection resistor R2 also has a value range of 4.5 to 5.7 Ω, the resistance ratio range of the sampling resistor R1 to the second protection resistor R2 is 1: 22 to 1: 38. of course, the range of the resistance ratio between the sampling resistor R1 and the second protection resistor R2 may not be limited by the specific resistance of the sampling resistor R1 and the second protection resistor R2, as far as the resistance ratio is concerned.
As shown in FIG. 4, the present invention provides a preferred embodiment of the first detection circuit 400.
The first detection circuit 400 includes a first voltage-dividing resistor R4 and a second voltage-dividing resistor R5, the first voltage-dividing resistor R4 is connected to the voltage output terminal of the voltage boost unit 200 and the second voltage-dividing resistor R5, the other end of the second voltage-dividing resistor R5 is grounded, the control unit 600 accesses the connection node between the first voltage-dividing resistor R4 and the second voltage-dividing resistor R5 to obtain the divided voltage of the second voltage-dividing resistor R5, and the control unit 600 obtains the output voltage of the voltage boost unit 200 according to the divided voltage of the second voltage-dividing resistor R5, the resistance value of the first voltage-dividing resistor R4 and the resistance value of the second voltage-dividing resistor R5.
Specifically, the voltage division of the first voltage-dividing resistor R4 and the second voltage-dividing resistor R5 is utilized to realize that the first voltage-dividing resistor R4 and the second voltage-dividing resistor R5 obtain the output voltage of the voltage-boosting unit 200, and then the value of the second voltage-dividing resistor R5 is reduced, so that the main control unit can directly obtain the voltage of the second voltage-dividing resistor R5, without additionally adding other components for protection or shunting, the first voltage-dividing resistor R4 should be much larger than the resistance of the second voltage-dividing resistor R5, so as to reduce the voltage of the second voltage-dividing resistor R5, and the control unit 600 can directly obtain the output voltage of the voltage-boosting unit 200 by knowing the resistances of the first voltage-dividing resistor R4 and the second voltage-dividing resistor R5 and the voltage division of the second voltage-dividing resistor R5. The values of the first voltage-dividing resistor R4 and the second voltage-dividing resistor R5 need to consider the magnitude range of the output voltage of the voltage-boosting unit 200 on the one hand and the voltage limit condition of the value-taking end of the control unit 600 on the other hand, and the resistance ratio range of the second voltage-dividing resistor R5 to the first voltage-dividing resistor R4 is 1: 37 to 1: 72; the resistance of the second divider resistor R5 is preferably 10k Ω, and may range from 9k Ω to 11k Ω, and the resistance of the first divider resistor R4 is preferably 510k Ω, and may range from 450k Ω to 570k Ω.
In one embodiment, an algorithmic approach to calculating the output voltage of the boost unit 200 is provided.
The control unit 600 stores a fourth model for calculating the output voltage of the boosting unit 200
The V is Transfusion system Is the output voltage of the booster cell 200, said V Is divided into 2 Is the partial pressure of a second voltage-dividing resistor R5 Is divided into 1 Is the value of a first divider resistor R4, R Is divided into 2 Is the resistance of the second divider resistor R5.
The core idea is to obtain the voltage value of the first voltage-dividing resistor R4 and the output voltage of the voltage boost unit 200 according to the resistance ratio of the first voltage-dividing resistor R4 and the second voltage-dividing resistor R5 and according to the sampled voltage of the second voltage-dividing resistor R5.
In one embodiment, the second detection circuit 500 further includes a second capacitor, and the control unit 600 is connected to the connection node between the second voltage-dividing resistor R5 and the ground terminal through the second capacitor. The second capacitor is used for filtering, capacity is selected, 103 capacitors are preferably adopted for filtering due to the fact that the capacitors are small in capacitance, filtering to the ground is achieved by the fact that a small capacitor is needed to be connected in parallel with the ground, the voltage value is not too high, 50V capacitors are preferably adopted, only 10% of error values are adopted for filtering, and cost is saved.
As shown in fig. 5 and 6, the present invention provides a preferred embodiment of a pulse modulation circuit 300.
The pulse modulation circuit 300 further includes at least one set of control arms, each of the control arms includes a first control switch 321 and a second control switch 2, the control unit 600 is respectively connected to the control terminals of the first control switch 321 and the second control switch 324 to respectively control the on/off of the first control switch 321 and the second control switch 324, the input terminal of the first control switch 321 is connected to the power input terminal 311, the output terminal of the second control switch 324 is connected to the ground terminal, the output terminal of the first control switch 321 is connected to one of the first pulse transmission terminal and the second pulse transmission terminal, and the input terminal of the second control switch 324 is connected to the other of the first pulse transmission terminal and the second pulse transmission terminal.
Specifically, when the voltage boost circuit stably inputs an input voltage value, and after the two electrodes are attached to the part to be massaged, the control unit 600 forms a pulse signal, i.e., an electrical stimulation pulse signal, by controlling the on/off of the first control switch 321 and the second control switch 324, the electric energy input by the voltage boost circuit sequentially passes through the first control switch 321, the first electrode 301, the part to be massaged, the second electrode 302 and the second control switch 324 to be output outwards, and then passes through the sampling resistor R1 of the second detection circuit 500, the part to be massaged is stimulated by the pulse current, so that the part to be massaged experiences the feeling of massage, the current passing through the part to be massaged is adjusted by adjusting the input voltage, different massage strengths are realized, and different massage techniques are realized by matching with different pulse frequencies. The control unit 600 is connected to the first control switch 321 through the control terminal 331, and is connected to the second control switch 324 through the control terminal 334.
In one embodiment, the control arms are provided with two groups, the output ends of the two first control switches (321, 322) are respectively connected with the first pulse transmission end and the second pulse transmission end, the input ends of the two second control switches (323, 324) are respectively connected with the first pulse transmission end and the second pulse transmission end, and an H-bridge circuit is formed by the four control switches to realize the quick control of the interactive on-off of the two groups of control arms. The control unit 600 is connected to the first control switch 322 via the control terminal 332, and is connected to the second control switch 323 via the control terminal 333.
In one embodiment, the first control switch (321, 322) and the second control switch (323, 324) are both transistors, for example, an H-bridge circuit, and two of the transistors are a set of control arms. The pulse modulation circuit comprises a first triode Q1, a second triode Q2, a third triode Q3 and a fourth triode Q4, wherein the first triode Q1 and the second triode Q2 are used as first control switches (321 and 322), the third triode Q3 and the fourth triode Q4 are used as second control switches (323 and 324), the emitting electrodes of the first triode Q1 and the second triode Q2 are connected with the input end of the boosting unit 200 and are used as an electric energy input end 311 of the pulse modulation circuit 300, the bases of the first triode Q1 and the second triode Q2 are connected with the control end of the control unit 600, the collecting electrodes of the first triode Q1 and the second triode Q2 are respectively connected with two electrodes, the emitting electrodes of the third triode Q3 and the fourth triode Q4 are respectively connected with two electrodes, the collecting electrodes of the third triode Q3 and the fourth triode Q4 are connected with the grounding end 312 of the pulse modulation circuit 300, the bases of the third triode Q3 and the fourth triode Q4 are respectively connected with the control end of the control unit 600, the control unit 600 may control the on/off of the first transistor Q1, the second transistor Q2, the third transistor Q3 and the fourth transistor Q4, preferably, the simultaneous on/off of the first transistor Q1 and the fourth transistor Q4, and the simultaneous on/off of the second transistor Q2 and the third transistor Q3, respectively.
More specifically, the input end of the boosting unit 200 is connected to the control unit 600 through a pull-up resistor to provide a voltage for driving the transistors to be turned on and off, a resistor is connected in series to the base between the control unit 600 and each transistor to protect the control unit 600, and a driving voltage is generated at the base to achieve conduction of the transistors. The first pulse transmission end and the second pulse transmission end are grounded through a bidirectional variable resistance diode (D2, D3), so that bidirectional blocking between the motor and the ground end is realized, and current can conveniently flow back to the ground end. The electric energy input end 311 of the pulse modulation circuit 300 is connected with the control unit 600 through the resistor R10 and the control end 331, connected with the control unit 600 through the resistor R11 and the control end 332, connected with the control unit 600 through the resistor R12 and the control end 333, and connected with the control unit 600 through the resistor R13 and the control end 334; and a resistor R6 is connected in series between the control end 331 and the base of the first triode Q1, a resistor R7 is connected in series between the control end 332 and the base of the second triode Q2, a resistor R8 is connected in series between the control end 333 and the base of the third triode Q3, and a resistor R9 is connected in series between the control end 334 and the base of the fourth triode Q4.
As shown in fig. 7 and 8, the present invention provides a preferred embodiment of the boosting unit 200.
The boosting unit 200 comprises a power input end connected with the power supply 100, a boosting circuit 210, an energy storage circuit 220, a voltage relief circuit 230 and a voltage output end 201 connected with the pulse modulation circuit 300, wherein the input end of the boosting circuit 210 is connected with the power input end, and the control end of the boosting circuit 210 is connected with the control unit 600; the input end of the energy storage circuit 220 is connected with the output end of the booster circuit 210, and the output end of the energy storage circuit 220 is connected with the voltage output end 201; the control end of the voltage relief circuit 230 is connected to the control unit 600, the input end of the voltage relief circuit 230 is connected to the voltage output end 201, and the control unit 600 is configured to control the voltage boost circuit 210 and/or the energy storage circuit 220 to boost voltage or/and control the voltage relief circuit 230 to step down voltage according to the preset voltage and the impedance value between the paired electrodes, so as to control the voltage output end 201 to output the preset voltage to the pulse modulation circuit 300.
Specifically, the input end of the voltage boost circuit 210 is connected to the power input end to obtain the voltage of the power supply 100, and the control end of the voltage boost circuit 210 is connected to the control unit 600 to receive the control command and boost the voltage of the power supply 100; the input end of the energy storage circuit 220 is connected to the output end of the voltage boosting circuit 210 to store the boosted voltage, and the output end of the energy storage circuit 220 is connected to the voltage output end 201 to output a preset voltage to the voltage output end 201; the control end of the voltage-relief circuit 230 is connected to the control unit 600, and the input end of the voltage-relief circuit 230 is connected to the voltage output end 201, so as to step down the output voltage output from the voltage-boosting circuit 210 to the voltage output end 201 according to the control instruction.
When the impedance value between the electrodes arranged in pair increases, the control unit 600 controls the voltage relief circuit 230 to reduce the voltage output by the voltage output terminal 201, and when the impedance value decreases, the control unit 600 controls the voltage boost circuit 210 to boost the voltage output by the power supply 100, so as to dynamically maintain the output power of the voltage output terminal 201 unchanged.
In one embodiment, the boost circuit 210 includes an inductor L and a MOS transistor, one end of the inductor L is connected to the input end of the boost circuit 210, and the other end is connected to the output end of the boost circuit 210; the gate of the MOS transistor is connected to the control end of the voltage boost circuit 210, the drain of the MOS transistor is connected between the inductor L and the output end of the voltage boost circuit 210, and the source of the MOS transistor is grounded. The MOS transistor is mainly used as a current on-off switch, a gate of the MOS transistor is connected to the control end of the boost circuit 210 and then can receive a control instruction of the control unit 600, and is turned on or off according to the control instruction of the control unit 600, and when the MOS transistor is turned on, a current of the inductor L flows to the ground end through the MOS transistor, so that the power supply 100 charges the inductor L; when the MOS transistor is turned off, the current of the inductor L flows to the tank circuit 220, so as to boost the voltage output by the power supply 100. The capacitor C3 is connected between the power supply 100 and the inductor L, and grounded to realize filtering.
A resistor R14 is connected in series between the gate of the MOS transistor and the control end of the boost circuit 210 to protect the control unit 600, and the gate of the MOS transistor is connected to a resistor R15 and grounded to ground the control unit 600 in no-load, so as to prevent the MOS transistor from being turned on.
In one embodiment, the voltage output circuit further comprises a diode D4 connected in series between the output of the boost circuit 210 and the input of the tank circuit 220; and/or the tank circuit 220 is a capacitive tank circuit 220. When the MOS transistor of the voltage boosting circuit 210 is turned off, the current of the power PL1 flows to the energy storage circuit 220 through the diode D4, and the voltage output from the energy storage circuit 220 to the voltage output terminal 201 is the sum of the voltage output by the inductor L and the energy storage voltage of the energy storage circuit 220, so as to realize voltage boosting.
The energy storage circuit 220 is a capacitive energy storage circuit 220, the capacitive energy storage circuit 220 includes a fourth capacitor C4 and a fifth capacitor C5 connected in parallel between the input end and the output end of the energy storage circuit 220, the other ends of the fourth capacitor C4 and the fifth capacitor C5 are grounded, and the fourth capacitor C4 and the fifth capacitor C5 are mainly used for storing energy. The voltage output by the energy storage circuit 220 to the voltage output terminal 201 is the sum of the voltage output by the inductor L, the voltage of the fourth capacitor C4 and the voltage of the fifth capacitor C5, so as to realize boosting. The energy storage capacity of the fourth capacitor C4 is greater than that of the fifth capacitor C5.
In one embodiment, the voltage-dropping circuit 230 includes a first resistor R16, a fifth transistor Q5, a second resistor R17 and a third resistor R18, the first resistor R16 is connected in series between the control terminal of the voltage-dropping circuit 230 and the base of the fifth transistor Q5, and the emitter of the fifth transistor Q5 is grounded; one end of the third resistor R18 is connected between the first resistor R16 and the base electrode of the fifth triode Q5, and the other end is grounded; the second resistor R17 is connected in series between the input terminal of the voltage-dropping circuit 230 and the collector of the fifth transistor Q5. Specifically, when the output voltage output from the energy storage circuit 220 to the voltage output terminal 201 is higher than the preset voltage, the control unit 600 controls the transistor to be turned on, and the voltage relief circuit 230 relieves the voltage of the inductor L and the energy storage circuit 220, so that the output voltage output from the energy storage circuit 220 to the voltage output terminal 201 is reduced to the preset voltage, and the preset voltage is output to the pulse modulation circuit 300 through the voltage output terminal 201.
As shown in fig. 9 and 10, the present invention provides a preferred embodiment of a control method.
A control method is applied to an electric stimulation massage device and comprises the following steps:
step S10, the control unit 600 controls the pulse modulation circuit 300 to generate an electrical stimulation pulse signal;
s20, sequentially and circularly controlling the electrodes arranged in pairs to output electrical stimulation pulse signals, and acquiring impedance values between the electrodes arranged in pairs;
and step S30, when the impedance value is abnormal, the next circulation stops controlling the electrodes which are arranged in pairs and correspond to the abnormal impedance value to output the electrical stimulation pulse signal.
Specifically, the control unit 600 controls the pulse modulation circuit 300 to generate an electrical stimulation pulse signal to perform electrical stimulation massage on the to-be-massaged portion, and controls the electrodes arranged in pairs to perform a preset massage mode according to different massage modes, for example, each pair of electrodes outputs the electrical stimulation pulse signal in turn, or at least two pairs of electrodes output the electrical stimulation pulse signal in turn within a certain time, in step S20, the electrodes arranged in pairs are cyclically controlled in turn to output the electrical stimulation pulse signal according to the preset mode, in turn, in accordance with the preset sequence, instead of outputting the electrodes arranged in pairs in turn, it is also possible to output the electrodes arranged in pairs in turn, where the electrodes arranged in pairs refer to not only two electrodes of a single pulse modulation circuit 300, but also to output one electrode of a pulse modulation circuit 300 and one electrode of another matched pulse modulation circuit 300 And an electrode. Finally, the impedance value between the electrodes arranged in pairs is obtained through the electric stimulation massage device, namely the impedance value corresponding to each time of electric stimulation pulse signal output is obtained.
Normally, since the bonding areas are close to each other and the output voltages are consistent, the shapes and materials of the electrodes are also consistent or close to each other, theoretically, the impedance values should be close to or consistent with each other, but the impedance values may cause abnormal impedance values due to wearing problems and internal circuit problems, that is, a pair of electrodes have problems and cannot normally output the electrical stimulation pulse signals, and if the electrical stimulation pulse signals are output continuously, pricking pain of the part to be massaged is easily caused. Therefore, when the impedance value is abnormal, the next cycle stops controlling the electrodes arranged in pairs corresponding to the abnormal impedance value to output the electrical stimulation pulse signal.
The next cycle here means that before the two electrodes corresponding to the abnormal impedance value are connected simultaneously, the control unit 600 controls the pulse modulation circuit 300 to disconnect the current loop so as not to participate in the operation of outputting the electrical stimulation pulse signal next time.
In one embodiment, referring to fig. 10, the steps of the control method further include:
step S31, recording the impedance value of each electrical stimulation loop;
step S32, when the impedance value of an electrical stimulation circuit is abnormal, notifying a user.
In step S20, the impedance values between the electrodes arranged in pairs are obtained and recorded, that is, the impedance values of each electrical stimulation loop are recorded, when the impedance value of one electrical stimulation loop is abnormal, that is, the electrodes arranged in pairs are abnormal, after the next loop stop control is performed and the electrical stimulation pulse signal is output by the electrode arranged in pairs corresponding to the impedance value abnormality, the user needs to be informed to decide whether to turn off the power supply 100 or reduce the output voltage, or even to remind the user to wear the electrical stimulation massage device again.
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 scope of the present invention, but rather as embodying the invention in a wide variety of equivalent variations and modifications within the scope of the appended claims.
Claims (23)
1. An electric stimulation massage apparatus, characterized in that the electric stimulation massage apparatus comprises:
a power supply and control unit;
the boosting unit is respectively connected with the control unit and the power supply, boosts the input voltage of the power supply to a preset voltage under the control of the control unit and outputs the preset voltage to the outside through a voltage output end of the boosting unit;
the electrode is used for being attached to a part to be massaged;
the electric energy input end of the pulse modulation circuit is connected with the voltage output end of the boosting unit, a first pulse transmission end and a second pulse transmission end of the pulse modulation circuit are respectively connected with an electrode, and the control end of the pulse modulation circuit is connected with the control unit;
the first detection circuit is respectively connected with the control unit and the voltage output end of the boosting unit, and the control unit obtains the output voltage of the boosting unit through the first detection circuit;
the second detection circuit is connected with the control unit, a sampling resistor of the second detection circuit is connected between the pulse modulation circuit and the ground end in series, and the control unit obtains sampling voltage of the sampling resistor through the second detection circuit; wherein the content of the first and second substances,
and the control unit acquires impedance values between the paired electrodes according to the output voltage, the resistance value of the sampling resistor and the sampling voltage.
2. The electrical stimulation massage device as claimed in claim 1, wherein the sampling resistor has a value ranging from 130 Ω to 170 Ω.
3. The electric stimulation massage apparatus as claimed in claim 1, wherein: the second detection circuit further comprises a first protection resistor, a first capacitor and a first voltage stabilizing diode, the control unit is connected between the pulse modulation circuit and the sampling resistor through the first protection resistor, the control unit is connected between the sampling resistor and the ground end through the first capacitor and the first voltage stabilizing diode respectively, and the anode of the first voltage stabilizing diode is grounded.
4. The electric stimulation massage apparatus according to claim 1 or 2, characterized in that: the second detection circuit further comprises a second protection resistor, and the second protection resistor is connected between the pulse modulation circuit and the sampling resistor in series; the resistance value ratio range of the sampling resistor to the second protection resistor is 1: 22 to 1: 38.
5. the electric stimulation massage apparatus as claimed in claim 1, wherein: the control unit stores a first model for calculating the impedance value between the electrodes, and the first model is
The R is Impedance(s) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining For sampling the resistance value of the resistor, V Transfusion system Is the output voltage of the booster cell, I Regulating device For pulsing the pulse-modulating circuitThe current is applied.
6. The electric stimulation massage apparatus according to claim 1 or 2, characterized in that: the control unit stores a second model for calculating the impedance value between the electrodes, and the second model is
Said R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining For sampling the resistance value of the resistor, V Transfusion system Is the output voltage of the booster cell, I Regulating device And outputting the pulse current for the pulse modulation circuit.
7. The electric stimulation massage apparatus according to claim 1 or 2, characterized in that: the control unit stores a third model for calculating the impedance value between the electrodes, and the third model is
Said R is Impedance (L) For the impedance value between the electrodes arranged in pairs, said V Mining To sample the voltage, R Mining For sampling the resistance value of the resistor, V Transfusion system Is the output voltage of the booster cell, I Regulating device Current for pulse output of pulse modulation circuit, R Surplus Is a preset margin of error.
8. The electric stimulation massage apparatus as claimed in claim 1, wherein: the first detection circuit comprises a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor is respectively connected with a voltage output end of the boosting unit and the second voltage-dividing resistor, the other end of the second voltage-dividing resistor is grounded, the control unit is connected to a connection node between the first voltage-dividing resistor and the second voltage-dividing resistor to obtain the divided voltage of the second voltage-dividing resistor, and the control unit obtains the output voltage of the boosting unit according to the divided voltage of the second voltage-dividing resistor, the resistance value of the first voltage-dividing resistor and the resistance value of the second voltage-dividing resistor.
9. The electrical stimulation massage apparatus according to claim 8, characterized in that: the control unit stores a fourth model for calculating the output voltage of the boosting unit, and the fourth model is
The V is Transfusion system Is the output voltage of the booster cell, V Is divided into 2 Is the voltage division of a second voltage division resistor, said R Is divided into 1 Is the resistance value of the first divider resistor, R Is divided into 2 Is the resistance of the second divider resistor.
10. The electric stimulation massage apparatus according to claim 8 or 9, characterized in that: the resistance ratio range of the second voltage-dividing resistor to the first voltage-dividing resistor is 1: 37 to 1: 72.
11. the electric stimulation massage apparatus according to claim 8, characterized in that: the second detection circuit further comprises a second capacitor, and the control unit is connected to a connection node between the second voltage-dividing resistor and the ground end through the second capacitor.
12. The electro-stimulation massage device of claim 1, wherein the pulse modulation circuit further comprises:
the control unit is respectively connected with the control ends of the first control switch and the second control switch to respectively control the on-off of the first control switch and the second control switch, the input end of the first control switch is connected with the electric energy input end, the output end of the second control switch is connected with the ground end, the output end of the first control switch is connected with one of the first pulse transmission end and the second pulse transmission end, and the input end of the second control switch is connected with the other of the first pulse transmission end and the second pulse transmission end.
13. The electric stimulation massage apparatus as claimed in claim 12, wherein: the control arms are provided with two groups, the output ends of the two first control switches are respectively connected with the first pulse transmission end and the second pulse transmission end, and the input ends of the two second control switches are respectively connected with the first pulse transmission end and the second pulse transmission end.
14. The electric stimulation massage apparatus as claimed in claim 12 or 13, wherein: the first control switch and the second control switch are both triodes.
15. The electric stimulation massage apparatus as claimed in claim 12 or 13, wherein: the first pulse transmission end and the second pulse transmission end are grounded through a bidirectional variable resistance diode.
16. The electric stimulation massage apparatus as claimed in claim 1, 12 or 13, wherein: the pulse modulation circuit is provided with a plurality of, and every pulse modulation circuit all disposes two electrodes.
17. The electrical stimulation massage device as claimed in claim 1, wherein the boosting unit comprises a power input end connected with the power supply, a boosting circuit, an energy storage circuit, a pressure relief circuit and a voltage output end connected with the pulse modulation circuit, the input end of the boosting circuit is connected with the power input end, and the control end of the boosting circuit is connected with the control unit; the input end of the energy storage circuit is connected with the output end of the booster circuit, and the output end of the energy storage circuit is connected with the voltage output end; the control end of the pressure relief circuit is connected with the control unit, the input end of the pressure relief circuit is connected with the voltage output end, and the control unit is used for controlling the voltage boosting circuit and/or the energy storage circuit to boost or/and control the pressure relief circuit to reduce voltage according to preset voltage and impedance values between electrodes which are arranged in pairs so as to control the voltage output end to output preset voltage to the pulse modulation circuit.
18. The electrical stimulation massage device as claimed in claim 17, wherein the voltage boost circuit comprises an inductor and a MOS transistor, one end of the inductor is connected with the input end of the voltage boost circuit, and the other end of the inductor is connected with the output end of the voltage boost circuit; the grid of MOS pipe with boost circuit's control end is connected, the drain electrode of MOS pipe is connected in the inductance with between boost circuit's the output, the source electrode ground connection of MOS pipe.
19. The electrical stimulation massage apparatus according to claim 17, wherein: the voltage output circuit further comprises a diode connected in series between the output end of the booster circuit and the input end of the energy storage circuit; and/or the energy storage circuit is a capacitive energy storage circuit.
20. The electrical stimulation massage apparatus according to claim 17, wherein: the energy storage circuit is a capacitive energy storage circuit, the capacitive energy storage circuit comprises a fourth capacitor and a fifth capacitor which are connected in parallel between the input end and the output end of the energy storage circuit, and the other ends of the fourth capacitor and the fifth capacitor are grounded.
21. The electrical stimulation massage apparatus according to claim 17, wherein: the voltage relief circuit comprises a first resistor, a fifth triode, a second resistor and a third resistor, the first resistor is connected between the control end of the voltage relief circuit and the base electrode of the fifth triode in series, and the emitter electrode of the fifth triode is grounded; one end of the third resistor is connected between the first resistor and the base electrode of the fifth triode, and the other end of the third resistor is grounded; the second resistor is connected in series between the input end of the voltage relief circuit and the collector of the fifth triode.
22. A control method applied to the electric stimulation massage apparatus according to claim 16, the control method comprising the steps of:
the control unit controls the pulse modulation circuit to generate an electrical stimulation pulse signal;
sequentially and circularly controlling the electrodes arranged in pairs to output electrical stimulation pulse signals, and acquiring impedance values between the electrodes arranged in pairs;
and when the impedance value is abnormal, the next cycle stops controlling the electrodes which are arranged in pairs and correspond to the abnormal impedance value to output the electrical stimulation pulse signals.
23. The control method according to claim 22, characterized in that the steps of the control method further comprise:
recording the impedance value of each electrical stimulation loop;
when the impedance value of an electrical stimulation loop is abnormal, a user is informed.
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|---|---|---|---|
| CN202210539185.8A CN114984448A (en) | 2022-05-18 | 2022-05-18 | Electric stimulation massage device and control method thereof |
| PCT/CN2023/085756 WO2023221671A1 (en) | 2022-05-18 | 2023-03-31 | Electrostimulation massage apparatus and method for controlling same |
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| CN202210539185.8A CN114984448A (en) | 2022-05-18 | 2022-05-18 | Electric stimulation massage device and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023221671A1 (en) * | 2022-05-18 | 2023-11-23 | 未来穿戴健康科技股份有限公司 | Electrostimulation massage apparatus and method for controlling same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023221671A1 (en) * | 2022-05-18 | 2023-11-23 | 未来穿戴健康科技股份有限公司 | Electrostimulation massage apparatus and method for controlling same |
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