Control circuit of massage equipment with TENS function

Abstract

The utility model discloses a control circuit of massage equipment with a TENS function. The control circuit comprises a control unit, a booster circuit unit, a TENS driving unit and a TENS control unit, the TENS driving unit is electrically connected with the control unit; one end of the boost circuit unit is connected with the control unit, and the other end is connected with the TENS driving unit; one end of the TENS control unit is connected with the control unit, and the other end is connected with the TENS driving unit. According to the control circuit of the massage equipment with the TENS function, boosting power supply of the TENS driving unit is achieved through the boosting circuit unit, control over the working voltage, frequency and pulse width of the TENS driving unit is achieved through the control unit and the TENS control unit, the working performance of TENS massage of the massage equipment is improved, a user can select a proper TENS mode (frequency and pulse width) according to the self-adaptability, and the user experience is improved. The TENS intensity (voltage) is adjusted, the specific excitement sensory nerves with pain symptoms are stimulated, and a gate mechanism system is stimulated; comfortable massage depth and strength are generated; acute and chronic pains are quickly relieved, and the use of analgesic drugs is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of circuit management, and in particular relates to a control circuit of a massage device with a TENS function. Background Art

[0002] TENS (Transcutaneous Electrical Nerve Stimulation) is a non-invasive treatment method that stimulates nerves by applying weak electric currents on the surface of the skin. It is often used to relieve acute and chronic pain and promote blood circulation.

[0003] However, existing TENS massage devices have limited control effects on the voltage, frequency, and pulse width of the TENS function, a small TENS discharge voltage range, and a slow response speed, making it difficult to meet the comfort and therapeutic requirements of massage devices. Utility Model Content

[0004] The utility model aims to provide a control circuit of a massage device with TENS function to solve the technical problems existing in the prior art.

[0005] A control circuit of a massage device with TENS function comprises: a control unit, a boost circuit unit, a TENS driving unit and a TENS control unit; the boost circuit unit, the TENS driving unit and the TENS control unit are electrically connected to the control unit respectively.

[0006] The control unit includes a control chip U1; the boost circuit unit includes: a first switch module, a first inductor L1, a boost chip U2, a first diode D1, a load resistor R1, and a capacitor C1; the first switch module controls the on / off of the power supply voltage B+ and the first end of the first inductor L1, and the first end of the first inductor L1 is connected to the fourth pin and the fifth pin of the boost chip U2; the second end of the first inductor L1 is connected to the first pin of the boost chip U2 and the first end of the first diode D1; one end of the load resistor R1 and the capacitor C1 is connected in parallel to the second end of the first diode D1 and the first boost output voltage V1, and the other end is grounded.

[0007] The first switch module includes: a first switch element Q1 and a second switch element Q2; the first pin of the first switch element Q1 is connected to the boost control pin BOOST_EN of the control chip U1, the third pin of the first switch element Q1 is connected to the first pin of the second switch element Q2, and the second pin of the first switch element Q1 is grounded; the second pin of the second switch element Q2 is connected to the power supply voltage B+, and the third pin of the second switch element Q2 is connected to the first end of the first inductor L1, the fourth pin and the fifth pin of the boost chip U2.

[0008] The control circuit of the massage device with TENS function also includes: a voltage dividing unit; a boost circuit unit connected to the input end of the voltage dividing unit, and an output end of the voltage dividing unit connected to the TENS driving unit.

[0009] The voltage dividing unit includes: a first voltage dividing resistor R2 and a second voltage dividing resistor R3; one end of the first voltage dividing resistor R2 is connected to the first boosted output voltage V1, and the other end is connected to the first end of the second voltage dividing resistor R3 and the second boosted output voltage V2, and the second end of the second voltage dividing resistor R3 is grounded.

[0010] The TENS driving unit includes: a transformer T1 and a second switch module; a first end of the transformer T1 is connected to a first boosted output voltage V1 or a second boosted output voltage V2; a second end of the transformer T1 is connected to the second switch module; a third end and a fourth end of the transformer T1 are respectively connected to a TENS positive electrode and a TENS negative electrode.

[0011] The second switch module includes: a third switch element Q3, a fourth switch element Q4, a fifth switch element Q5, and a sixth switch element Q6; the first end of the third switch element Q3 is connected to the TENS voltage control analog signal, the third end of the third switch element Q3 is connected to the first end of the transformer T1, and the second end of the third switch element Q3 is connected to the second end of the fourth switch element Q4; the first end of the fourth switch element Q4 is connected to the third end of the fifth switch element Q5, and the third end of the fourth switch element Q4 is connected to the first end of the sixth switch element Q6; the first end of the fifth switch element Q5 is connected to the TENS frequency and pulse width control pin TENS_PWM of the control chip U1, and the second end of the fifth switch element Q5 is grounded; the third end of the sixth switch element Q6 is connected to the second end of the transformer T1, and the second end of the sixth switch element Q6 is grounded.

[0012] The TENS control unit includes: a digital-to-analog conversion unit.

[0013] The digital-to-analog conversion unit is any one of a digital-to-analog converter DAC provided in the control chip, an analog-to-digital conversion circuit based on a digital-to-analog conversion chip, or a circuit having a digital-to-analog conversion DAC function.

[0014] The digital-to-analog conversion unit includes a digital-to-analog conversion chip U3 and a seventh switch element Q7; the first end of the seventh switch element Q7 is connected to the TENS voltage control digital signal pin DAC_PWM of the control chip U1, the second end of the seventh switch element Q7 is grounded, the third end of the seventh switch element Q7 is connected to the digital-to-analog conversion chip input voltage V3 and the fifth end of the digital-to-analog conversion chip U3, and the first end of the digital-to-analog conversion chip U3 is connected to the first end of the third switch element Q3 to output the TENS voltage control analog signal TENS_DAC.

[0015] The present application seeks protection for a control circuit of a massage device with a TENS function. The control circuit of the massage device with a TENS function realizes a boosted power supply to a TENS drive unit through a boost circuit unit, and realizes control of the working voltage, frequency, and pulse width of the TENS drive unit through a control unit and a TENS control unit, thereby improving the working performance of the massage device TENS massage: the user can select a suitable TENS mode (frequency, pulse width) and adjust the TENS intensity (voltage) according to the adaptability to stimulate specific excited sensory nerves with pain symptoms and stimulate the gate mechanism system; produce a comfortable massage depth and intensity; quickly relieve acute and chronic pain and reduce the use of analgesics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a functional module diagram of an embodiment of a massage device with TENS function.

[0018] Figure 2 This is a functional module diagram of another embodiment of a massage device with TENS function.

[0019] Figure 3 This is a functional module diagram of another embodiment of a massage device with TENS function.

[0020] Figure 4 This is a wiring diagram of a control chip for a massage device with TENS function.

[0021] Figure 5 A diagram of a booster unit in one embodiment of a massage device with TENS function.

[0022] Figure 6 This is a schematic circuit diagram of a voltage divider unit in one embodiment of a massage device with TENS function.

[0023] Figure 7 This is a schematic circuit diagram of a TENS driving unit in one embodiment of a massage device with TENS function.

[0024] Figure 8 This is a schematic circuit diagram of a digital-to-analog conversion unit in one embodiment of a massage device with TENS function. DETAILED DESCRIPTION

[0025] In the following description, various specific details are provided to facilitate as much as possible the understanding of the embodiments provided by way of example. These embodiments may be implemented with or without specific details, or implemented with other methods, components or materials, etc. In other cases, well-known structures, materials or operations are not shown or described in detail, so as not to obscure the aspects of these embodiments. Reference to "embodiment" or "one embodiment" in the framework of this description refers to a given quality, structure or feature described in conjunction with the embodiment being included in at least one embodiment. Therefore, phrases such as "in an embodiment" or "in an embodiment" appear in various places of this description and do not necessarily refer to one and the same embodiment. In addition, quality, structure or features may be combined in one or more embodiments in any convenient manner.

[0026] As the instruction manual Figure 1-8 As shown:

[0027] A control circuit of a massage device with TENS function comprises: a control unit, a boost circuit unit, a TENS driving unit and a TENS control unit; the boost circuit unit, the TENS driving unit and the TENS control unit are electrically connected to the control unit respectively.

[0028] Among them, the control unit is used to transmit control signals to the boost circuit unit, the TENS drive unit, and the TENS control unit to control the operation / shutdown of each unit, and in combination with the TENS control unit to achieve effective control of the working voltage, frequency, and pulse width of the TENS drive unit, thereby improving the massage adjustment dimension of the massage equipment. Users can choose the TENS massage mode according to their own situation. The control unit adjusts the working voltage, frequency, and pulse width of the TENS drive unit according to the selection of the massage mode, thereby specifically improving the user's massage experience; the boost circuit unit is used to boost the power supply voltage and input it to the TENS drive unit, so that the TENS drive unit can further amplify the boosted voltage, thereby enabling the TENS discharge massage to achieve a level of safe and effective nerve stimulation; the TENS control unit converts the received control signal of the control unit into a frequency and pulse width control signal to control the frequency and pulse width of the TENS discharge massage of the TENS drive unit.

[0029] Through this embodiment, the control circuit of the massage device with TENS function realizes the boost power supply of the TENS driving unit through the boost circuit unit, and realizes the control of the working voltage, frequency and pulse width of the TENS driving unit through the control unit and the TENS control unit, thereby improving the working performance of the massage device TENS massage: it helps to select a suitable TENS mode according to the degree of pain; by increasing or decreasing the TENS intensity and selecting the appropriate frequency and pulse width, corresponding electric pulses are generated for treating acute and chronic pain and promoting blood circulation; the user can select a suitable TENS mode (frequency, pulse width) and adjust the TENS intensity (voltage) according to the adaptability to stimulate specific excited sensory nerves with pain symptoms and stimulate the gate mechanism system; produce a comfortable massage depth and intensity; quickly relieve acute and chronic pain and reduce the use of analgesics.

[0030] In one embodiment, the control unit includes a control chip U1; the boost circuit unit includes: a first switch module, a first inductor L1, a boost chip U2, a first diode D1, a load resistor R1, and a capacitor C1; the first switch module controls the on / off of the power supply voltage B+ and the first end of the first inductor L1, and the first end of the first inductor L1 is connected to the fourth pin and the fifth pin of the boost chip U2; the second end of the first inductor L1 is connected to the first pin of the boost chip U2 and the first end of the first diode D1; the load resistor R1 and the capacitor C1 are connected in parallel, and one end is connected to the second end of the first diode D1 and the first boost output voltage V1, and the other end is grounded.

[0031] In this embodiment, the boost circuit unit boosts the power supply voltage to the voltage required by the TENS driving unit based on the boost chip and related circuits, has high efficiency and strong load capacity, can quickly adapt to different input and output voltage changes, and achieve high-precision voltage regulation. The first switch module controls the on and off of the power supply of the boost circuit unit; when the boost chip U2 switch is turned on, the current flows through the first inductor L1, and the first inductor L1 stores energy; when the boost chip U2 switch is turned off, the first inductor L1 releases energy; the boost chip U2 can monitor the feedback voltage to achieve precise regulation of the output voltage and current; the load resistor R1 directly affects the output voltage and current, and the boost chip U2 monitors its voltage division part to improve the accuracy of regulation; the capacitor C1 maintains the continuity of the boost circuit.

[0032] In one embodiment, the first switch module includes: a first switch element Q1 and a second switch element Q2; the first pin of the first switch element Q1 is connected to the boost control pin BOOST_EN of the control chip U1, the third pin of the first switch element Q1 is connected to the first pin of the second switch element Q2, and the second pin of the first switch element Q1 is grounded; the second pin of the second switch element Q2 is connected to the power supply voltage B+, and the third pin of the second switch element Q2 is connected to the first end of the first inductor L1, the fourth pin and the fifth pin of the boost chip U2.

[0033] In this embodiment, control elements such as triodes, field effect transistors, and MOSFETs are used as switching elements, and the on and off of the second switching element Q2 is controlled by the first switching element Q1 (forming a first switching module) to achieve fine control of the load current. It has fast switching performance, low power consumption, and low noise, and protects the control circuit from high current or high voltage, thereby improving the reliability of the entire circuit and is suitable for high-frequency application scenarios.

[0034] In one embodiment, the control circuit of the massage device with TENS function further includes: a voltage divider unit; a boost circuit unit connected to an input end of the voltage divider unit, and an output end of the voltage divider unit connected to the TENS driving unit.

[0035] In this embodiment, the first boost output voltage is divided, which increases the voltage selection range of the TENS drive unit and improves the voltage regulation range of the TENS drive unit. The range in which users can adjust the TENS voltage according to their own comfort or treatment stage is also expanded, thereby increasing the specific usage scenarios of the massage equipment.

[0036] In one embodiment, the voltage dividing unit includes: a first voltage dividing resistor R2 and a second voltage dividing resistor R3; one end of the first voltage dividing resistor R2 is connected to the first boosted output voltage V1, and the other end is connected to the first end of the second voltage dividing resistor R3 and the second boosted output voltage V2, and the second end of the second voltage dividing resistor R3 is grounded. In this embodiment, the voltage dividing unit realizes the voltage dividing function based on the voltage dividing resistor. When the user uses the massage device, if the TENS discharge pain is too strong, the user can select the "reduce pain" mode, and the power supply of the TENS driving unit will then use the second boosted output voltage V2, and the overall pain caused by the TENS massage of the massage device will be reduced accordingly.

[0037] In one embodiment, the TENS driving unit includes: a transformer T1 and a second switch module; the first end of the transformer T1 is connected to the first boosted output voltage V1 or the second boosted output voltage V2; the second end of the transformer T1 is connected to the second switch module; the third end and the fourth end of the transformer T1 are respectively connected to the TENS positive pole and the TENS negative pole.

[0038] In this embodiment, the TENS driving unit performs terminal amplification on the boosted output voltage based on a transformer, so that it meets the power supply requirements of TENS discharge therapy, effectively stimulates the sensory fibers of the human body, and achieves a massage effect.

[0039] In one embodiment, the second switch module includes: a third switch element Q3, a fourth switch element Q4, a fifth switch element Q5, and a sixth switch element Q6; the first end of the third switch element Q3 is connected to the TENS voltage control analog signal, the third end of the third switch element Q3 is connected to the first end of the transformer T1, and the second end of the third switch element Q3 is connected to the second end of the fourth switch element Q4; the first end of the fourth switch element Q4 is connected to the third end of the fifth switch element Q5, and the third end of the fourth switch element Q4 is connected to the first end of the sixth switch element Q6; the first end of the fifth switch element Q5 is connected to the TENS frequency and pulse width control pin TENS_PWM of the control chip U1, and the second end of the fifth switch element Q5 is grounded; the third end of the sixth switch element Q6 is connected to the second end of the transformer T1, and the second end of the sixth switch element Q6 is grounded.

[0040] In this embodiment, control elements such as triodes, field effect transistors, and MOS tubes are used as switching elements with efficient switching performance. The third switching element Q3 receives the analog signal TENS_DAC transmitted by the TENS control unit, and the fifth switching element Q5 receives the TENS frequency and pulse width control signal TENS_PWM. After the transmission of the fourth switching element Q4 and the sixth switching element Q6, the working voltage, frequency, and pulse width of the TENS massage electrodes output by the TENS driving unit are accurately controlled, so that the user can personally feel the effectiveness of the TENS massage and the smoothness of the mode change.

[0041] In one embodiment, the TENS control unit includes: a digital-to-analog conversion unit.

[0042] In this embodiment, the control unit converts the digital control signal into a voltage-controlled analog signal, which improves the continuity of the voltage regulation of TENS discharge. When using it, the user will not abruptly feel the change in TENS massage intensity. The change in the entire TENS massage intensity is smoother, making the user's massage experience more comfortable during the process of adjusting the TENS discharge size.

[0043] In one embodiment, the digital-to-analog conversion unit is any one of a digital-to-analog converter DAC provided by the control chip, an analog-to-digital conversion circuit based on a digital-to-analog conversion chip, or a circuit having a digital-to-analog conversion DAC function.

[0044] In this embodiment, a suitable digital-to-analog conversion structure can be selected according to the hardware conditions, conversion speed and control accuracy requirements of the massage device to improve the integration, reliability and integrity of the massage device or improve the size of the massage device.

[0045] In one embodiment, the digital-to-analog conversion unit includes a digital-to-analog conversion chip U3 and a seventh switch element Q7; the first end of the seventh switch element Q7 is connected to the TENS voltage control digital signal pin DAC_PWM of the control chip U1, the second end of the seventh switch element Q7 is grounded, the third end of the seventh switch element Q7 is connected to the digital-to-analog conversion chip input voltage V3 and the fifth end of the digital-to-analog conversion chip U3, and the first end of the digital-to-analog conversion chip U3 is connected to the first end of the third switch element Q3 to output the TENS voltage control analog signal TENS_DAC.

[0046] In this embodiment, the digital-to-analog conversion unit realizes a high-precision, low-distortion, low-power, and fast-response signal digital-to-analog conversion process through a digital-to-analog conversion chip and related circuit structures. It has high reliability and realizes efficient control of the input voltage of the TENS drive unit, so that the TENS intensity adjustment function of the massage device used by users is durable.

[0047] The above is only a specific implementation of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A control circuit of a massage device with TENS function, characterized in that: include: Control unit, boost circuit unit, TENS driving unit, TENS control unit; The TENS driving unit is electrically connected to the control unit; one end of the boost circuit unit is connected to the control unit, and the other end is connected to the TENS driving unit; one end of the TENS control unit is connected to the control unit, and the other end is connected to the TENS driving unit.

2. The control circuit of the massage device with TENS function as claimed in claim 1, characterized in that: The control unit includes a control chip U1; the boost circuit unit includes: a first switch module, a first inductor L1, a boost chip U2, a first diode D1, a load resistor R1, and a capacitor C1; the first switch module controls the on / off of the power supply voltage B+ and the first end of the first inductor L1, and the first end of the first inductor L1 is connected to the fourth pin and the fifth pin of the boost chip U2; the second end of the first inductor L1 is connected to the first pin of the boost chip U2 and the first end of the first diode D1; one end of the load resistor R1 and the capacitor C1 is connected in parallel to the second end of the first diode D1 and the first boost output voltage V1, and the other end is grounded.

3. The control circuit of the massage device with TENS function as claimed in claim 2, characterized in that: The first switch module includes: a first switch element Q1 and a second switch element Q2; the first pin of the first switch element Q1 is connected to the boost control pin BOOST_EN of the control chip U1, the third pin of the first switch element Q1 is connected to the first pin of the second switch element Q2, and the second pin of the first switch element Q1 is grounded; the second pin of the second switch element Q2 is connected to the power supply voltage B+, and the third pin of the second switch element Q2 is connected to the first end of the first inductor L1, the fourth pin and the fifth pin of the boost chip U2.

4. The control circuit of the massage device with TENS function as claimed in claim 3, characterized in that: Also includes: Voltage divider unit; The boost circuit unit is connected to the input end of the voltage divider unit, and the output end of the voltage divider unit is connected to the TENS driving unit.

5. The control circuit of the massage device with TENS function as claimed in claim 4, characterized in that: The voltage dividing unit includes: a first voltage dividing resistor R2 and a second voltage dividing resistor R3; one end of the first voltage dividing resistor R2 is connected to the first boosted output voltage V1, and the other end is connected to the first end of the second voltage dividing resistor R3 and the second boosted output voltage V2, and the second end of the second voltage dividing resistor R3 is grounded.

6. The control circuit of the massage device with TENS function according to any one of claims 1 to 5, characterized in that: The TENS driving unit includes: a transformer T1 and a second switch module; a first end of the transformer T1 is connected to a first boosted output voltage V1 or a second boosted output voltage V2; a second end of the transformer T1 is connected to the second switch module; a third end and a fourth end of the transformer T1 are respectively connected to a TENS positive electrode and a TENS negative electrode.

7. The control circuit of the massage device with TENS function as claimed in claim 6, characterized in that: The second switch module includes: a third switch element Q3, a fourth switch element Q4, a fifth switch element Q5, and a sixth switch element Q6; the first end of the third switch element Q3 is connected to the TENS voltage control analog signal TENS_DAC, the third end of the third switch element Q3 is connected to the first end of the transformer T1, and the second end of the third switch element Q3 is connected to the second end of the fourth switch element Q4; the first end of the fourth switch element Q4 is connected to the third end of the fifth switch element Q5, and the third end of the fourth switch element Q4 is connected to the first end of the sixth switch element Q6; the first end of the fifth switch element Q5 is connected to the TENS frequency and pulse width control pin TENS_PWM of the control chip U1, and the second end of the fifth switch element Q5 is grounded; the third end of the sixth switch element Q6 is connected to the second end of the transformer T1, and the second end of the sixth switch element Q6 is grounded.

8. The control circuit of the massage device with TENS function as claimed in claim 6, characterized in that: The TENS control unit comprises: a digital-to-analog conversion unit; an input end of the digital-to-analog conversion unit is connected to a control chip, and an output end of the digital-to-analog conversion unit is connected to a TENS driving unit.

9. The control circuit of the massage device with TENS function as claimed in claim 8, characterized in that: The digital-to-analog conversion unit is any one of a digital-to-analog converter DAC provided in the control chip, an analog-to-digital conversion circuit based on a digital-to-analog conversion chip, or a circuit having a digital-to-analog conversion DAC function.

10. The control circuit of the massage device with TENS function as claimed in claim 8, characterized in that: The digital-to-analog conversion unit includes a digital-to-analog conversion chip U3 and a seventh switch element Q7; the first end of the seventh switch element Q7 is connected to the TENS voltage control digital signal pin DAC_PWM of the control chip U1, the second end of the seventh switch element Q7 is grounded, the third end of the seventh switch element Q7 is connected to the digital-to-analog conversion chip input voltage V3 and the fifth end of the digital-to-analog conversion chip U3, and the first end of the digital-to-analog conversion chip U3 is connected to the first end of the third switch element Q3 to output the TENS voltage control analog signal TENS_DAC.

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