CN219595626U - Electric pulse massage instrument - Google Patents
Electric pulse massage instrument Download PDFInfo
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- CN219595626U CN219595626U CN202222191399.9U CN202222191399U CN219595626U CN 219595626 U CN219595626 U CN 219595626U CN 202222191399 U CN202222191399 U CN 202222191399U CN 219595626 U CN219595626 U CN 219595626U
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Abstract
The utility model relates to an electric pulse massage device, comprising: the power supply circuit comprises a power supply output end; the pulse modulation circuit comprises an electric signal input end; the sampling circuit comprises a sampling part and is used for collecting an electric signal between a power supply output end and an electric signal input end through the sampling part; the control unit is connected with the sampling circuit; the control unit is connected with the power supply circuit and used for controlling the power supply circuit. By additionally arranging the sampling circuit, the electric signal between the power supply output end and the electric signal input end is sampled, and when the electric signal collected by the sampling circuit is changed (such as suddenly increased or decreased), the control unit controls the power supply circuit to correspondingly adjust, such as stopping power supply or reducing the voltage value or the current value of the electric signal output by the power supply output end and the electric signal input end, so as to improve the safety performance of the electric pulse massage instrument.
Description
Technical Field
The utility model relates to the technical field of nursing equipment, in particular to an electric pulse massage instrument.
Background
With the development of society and the progress of technology, people have an increasingly higher pursuit of life quality and have an increasingly close attention to self health. Personal care appliances have been rapidly developed to meet the needs of people. The massage device is used as a personal care apparatus, and can massage various parts of the head, neck, hands, feet and the like of a human body according to different types of massage devices.
With the massage instrument which can perform pulse massage on human body, the massage instrument instantaneously amplifies the discharge of the human body due to improper use, so that the human body generates stinging feeling. For example, in the cervical vertebra massage apparatus using EMS (Electrical Muscle Stimulation, muscle electro-stimulation technology), when the electrode sheet is not properly worn, only a small area of the electrode sheet is in contact with a human body, the electrode sheet is short-circuited, or the USB charging interface is touched during use, the discharge of the human body is instantaneously amplified, so that the human body is stabbed.
Therefore, in practice, the inventors found that there are at least the following problems in the related art: the traditional electric pulse massage instrument has low safety.
Disclosure of Invention
Based on this, there is a need to provide an electric pulse massage apparatus aiming at the problem of low safety of the conventional electric pulse massage apparatus, the electric pulse massage apparatus comprising:
the power supply circuit comprises a power supply output end;
the pulse modulation circuit comprises an electric signal input end;
the sampling circuit comprises a sampling part and is used for collecting an electric signal between a power supply output end and an electric signal input end through the sampling part;
the control unit is connected with the sampling circuit; the control unit is connected with the power supply circuit and used for controlling the power supply circuit.
In one embodiment, the sampling portion is a first resistor, and the first resistor is connected between the power supply output end and the electric signal input end.
In one embodiment, the electric pulse massager further comprises an amplifying circuit connected between the sampling circuit and the control unit for amplifying the electric signal acquired by the sampling circuit.
In one embodiment, the sampling part is a first resistor, and the first resistor is connected between the power supply output end and the electric signal input end;
the amplifying circuit comprises an operational amplifier, a second resistor and a third resistor, one end of the second resistor is connected between the first resistor and the power supply output end, and the other end of the second resistor is connected with the first input end of the operational amplifier; one end of the third resistor is connected between the first resistor and the electric signal input end, and the other end of the third resistor is connected with the second input end of the operational amplifier.
In one embodiment, the amplifying circuit further includes a fourth resistor and a fifth resistor, one end of the fourth resistor is connected to the first input end of the operational amplifier, and the other end of the fourth resistor is connected to the output end of the operational amplifier; one end of the fifth resistor is connected to the second input end of the operational amplifier, and the other end of the fifth resistor is grounded.
In one embodiment, the first input of the operational amplifier is an inverting input and the second input of the operational amplifier is a non-inverting input; and/or the number of the groups of groups,
the amplifying circuit further comprises a sixth resistor, one end of the sixth resistor is connected to the output end of the operational amplifier, and the other end of the sixth resistor is grounded; and/or the number of the groups of groups,
the control unit is an MCU which is provided with a voltage pin, and the voltage pin is connected with a power supply access end of the operational amplifier; and/or the number of the groups of groups,
the electric pulse massage instrument also comprises an analog-to-digital conversion circuit which is connected between the output end of the operational amplifier and the control unit.
In one embodiment, the amplification circuit has a magnification of 15 to 25 times.
In one embodiment, the electric pulse massage apparatus further comprises an analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected between the sampling circuit and the control unit; and/or the number of the groups of groups,
the control unit is also connected with a pulse modulation circuit.
In one embodiment, the sampling portion is disposed near a connection line connecting the power supply output terminal and the electrical signal input terminal.
In one embodiment, the electric pulse massage apparatus further comprises an electrode pad; the electrode plate is connected in the pulse modulation circuit.
One of the above technical solutions has the following advantages and beneficial effects:
the electric pulse massage device comprises a power supply circuit, a pulse modulation circuit, a sampling circuit and a control unit. The power supply circuit comprises a power supply output end, and the pulse modulation circuit comprises an electric signal input end. In the working process of the electric pulse massage instrument, the sampling circuit collects an electric signal between the power supply output end and the electric signal input end through the sampling part on the sampling circuit. The sampling circuit is connected with the control unit and transmits the acquired electric signals to the control unit. And the control unit is connected with the power supply circuit for controlling the power supply circuit.
Therefore, by adding the sampling circuit to sample the electric signal between the power supply output end and the electric signal input end, when the electric signal collected by the sampling circuit is changed (such as suddenly rising or falling), the control unit can control the power supply circuit to make corresponding adjustment, such as stopping power supply or reducing the voltage value or the current value of the electric signal output by the power supply output end to the electric signal input end, so as to improve the safety performance of the electric pulse massage instrument.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the utility model.
Fig. 1 is a signal path diagram of an electric pulse massager under normal conditions in an embodiment of the present utility model.
Fig. 2 is a signal path diagram of the electric pulse massager in an abnormal situation in the embodiment of the present utility model.
Fig. 3 is a schematic diagram showing an arrangement of a sampling part of the electric pulse massager in the embodiment of the utility model.
Fig. 4 is a schematic diagram showing another arrangement of a sampling part of the electric pulse massager in the embodiment of the present utility model.
Fig. 5 is a schematic diagram of a pulse modulation circuit of an electric pulse massage apparatus according to an embodiment of the present utility model.
Fig. 6 is a schematic diagram of another configuration of a pulse modulation circuit of the electric pulse massage apparatus according to the embodiment of the present utility model.
Fig. 7 is a circuit diagram of a pulse modulation circuit of the electric pulse massage apparatus according to the embodiment of the present utility model.
Fig. 8 is a schematic structural view of an electric pulse massage apparatus according to an embodiment of the present utility model.
Fig. 9 is a circuit diagram of an amplifying circuit of the electric pulse massager in an embodiment of the present utility model.
Fig. 10 is another circuit diagram of an amplifying circuit of the electric pulse massager in an embodiment of the present utility model.
Fig. 11 is a circuit diagram of an amplifying circuit of an electric pulse massage machine according to an embodiment of the present utility model.
Fig. 12 is a schematic view of another structure of the electric pulse massage apparatus according to the embodiment of the present utility model.
Reference numerals:
1. an electric pulse massage device; 11. an electrode sheet; 13. a power supply circuit; 131. a power supply output terminal; 15. a pulse modulation circuit; 151. an electrical signal input terminal; 152. a first switching unit; 153. a second switching unit; 154. a fourth switching unit; 155. a fourth switching unit; 156. a first voltage stabilizing protection unit; 157. a second voltage stabilizing protection unit; 17. a sampling circuit; 171. a sampling unit; 171a, a first resistor; 19. a control unit; 21. an amplifying circuit; 211. an operational amplifier; 212. a second resistor; 213. a third resistor; 214. a fourth resistor; 215. a fifth resistor; 216. a sixth resistor; 23. an analog-to-digital conversion circuit.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "disposed," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The electric pulse massage apparatus 1 includes electrode pieces 11, and the electrode pieces 11 are connected to a pulse modulation circuit 15, and in general, the number of the electrode pieces 11 is two. The electrode plate 11 contacts with the skin of the human body, and when the electric pulse massage device 1 works, the electrode plate 11 releases an electric pulse signal to the human body so as to massage and care the human body.
Normally, the electrode pads 11 are completely attached to the skin of the human body, and an electric pulse signal of one electrode pad 11 is transmitted to the other electrode pad 11 through the human body (signal path a or b shown in fig. 1). However, when the user does not wear the electric pulse massage apparatus 1, the electrode plate 11 is not completely attached to the skin of the human body, even the contact area between the electrode plate 11 and the skin of the human body is very small, and the electrode plate 11 is in contact with the human body, and at this time, the electrode plate 11 intensively discharges the human body, so that the current in the loop is too large, and the user feels a tingling sensation (such as the signal path a or b shown in fig. 2).
Alternatively, when the electric pulse massage apparatus 1 releases the electric pulse signal to the human body, the user touches an interface (e.g., USB interface, typeC interface, etc.) on the electric pulse massage apparatus 1, resulting in a change in the transmission path of the electric pulse signal, so that the electric pulse signal is not transmitted from one electrode pad 11 to the other electrode pad 11 through the human body (signal path a or b shown in fig. 2), but the electrode pad 11 directly releases the electric pulse signal to the human body, resulting in a sudden increase in output current, endangering the user, or even damaging the electrode pad 11.
In order to solve the above-described problems, as shown in fig. 3 and 4, there is provided an electric pulse massage machine 1, the electric pulse massage machine 1 including a power supply circuit 13, a pulse modulation circuit 15, a sampling circuit 17, and a control unit 19.
The control unit 19 may be a CPU (Central Processing Unit ), such as a single-chip microcomputer.
The power supply circuit 13 supplies power to the pulse modulation circuit 15, and the power supply size of the power supply circuit 13 is controlled by the control unit 19. The power supply circuit 13 includes a power supply output terminal 131, and the power supply circuit 13 is connected to the electrical signal input terminal 151 of the pulse modulation circuit 15 through the power supply output terminal 131.
In one example, the power supply circuit 13 comprises a management circuit and a battery pack, the management circuit is connected to the battery pack, the management circuit comprises a power supply output terminal 131, the management circuit is connected to the electrical signal input terminal 151 of the pulse modulation circuit 15 through the power supply output terminal 131, wherein the management circuit is controlled by the control unit 19.
The power supply circuit 13 may be a voltage source type power supply circuit 13 or a current source type power supply circuit 13, and the type of the power supply circuit 13 is not particularly limited herein, depending on the requirements of the electric pulse massager 1.
The pulse modulation circuit 15 modulates the electric signal input from the power supply circuit 13 into an electric pulse signal to be output to the human body. The pulse modulation circuit 15 includes an electrical signal input 151, and the pulse modulation circuit 15 is connected to the power supply output 131 of the power supply circuit 13 through the electrical signal input 151.
In one example, as shown in fig. 5, the pulse modulation circuit includes a first switching unit 152, a second switching unit 153, a third switching unit 154, and a fourth switching unit 155. An input terminal of the first switching unit 152 and an input terminal of the second switching unit 153 are connected as the electric signal input terminal 151 of the pulse modulation circuit 15. The output end of the first switch unit 152 is connected to the input end of the third switch unit 154 and the electrode pad E1 of the electric pulse massage apparatus 1, respectively. The output terminal of the second switching unit 153 is connected to the input terminal of the fourth switching unit 155 and the electrode pad E2 of the electric pulse massage apparatus 1, respectively. An output terminal of the third switching unit 154 is connected to an output terminal of the fourth switching unit 155, and is grounded. The first, second, third and fourth switching units 152, 153, 154 and 155 each include a control signal access terminal.
The control signal access terminal of the first switching unit 152, the control signal access terminal of the second switching unit 153, the control signal access terminal of the third switching unit 154, and the control signal access terminal of the fourth switching unit 155 are respectively connected to a control device, and the control device respectively controls the first switching unit 152, the second switching unit 153, the third switching unit 154, and the fourth switching unit 155 to be turned on and off. For example, the first switching unit 152 and the third switching unit 154 may be turned on or off simultaneously, the second switching unit 153 and the fourth switching unit 155 are turned on or off simultaneously, and the second switching unit 153 and the fourth switching unit 155 are turned off simultaneously when the first switching unit 152 and the third switching unit 154 are turned on; when the first switching unit 152 and the third switching unit 154 are turned off, the second switching unit 153 and the fourth switching unit 155 are simultaneously turned on. For another example, the second switching unit 153 and the fourth switching unit 155 may be turned off, and after the first switching unit 152 is turned on for a preset time, the third switching unit 154 is turned on; or, the first switching unit 152 and the third switching unit 154 are turned off, and after the second switching unit 153 is turned on for a preset time, the fourth switching unit 155 is turned on. In one example, the control device is the control unit 19 of the present utility model.
In one example, as shown in fig. 6, the pulse modulation circuit further includes a first voltage stabilizing protection unit 156 and a second voltage stabilizing protection unit 157. One end of the first voltage stabilizing protection unit 156 is respectively connected to the output end of the first switch unit 152, the input end of the third switch unit 154, and the electrode pad E1 of the electric pulse massager 1, and the other end is grounded. One end of the second voltage stabilizing protection unit 157 is respectively connected with the output end of the second switch unit 153, the input end of the fourth switch unit 155 and the electrode sheet E2 of the electric pulse massager 1, and the other end is grounded.
In one example, as shown in fig. 7, the first switching unit 152 includes a switching tube VT1, a resistor R1, and a resistor R2. The second switching unit 153 includes a switching tube VT2, a resistor R3, and a resistor R4. The third switching unit 154 includes a switching transistor VT3, a resistor R5, and a resistor R6. The fourth switching unit 155 includes a switching transistor VT4, a resistor R7, and a resistor R8. The first voltage stabilizing protection unit 156 includes a bidirectional voltage stabilizing diode D1. The second zener protection unit 157 includes a bidirectional zener diode D2. The pulse modulation circuit further includes a resistor R9.
The emitter of the switching transistor VT1 and the emitter of the switching transistor VT2 are connected to each other, and the electric signal input terminal 151 of the pulse modulation circuit 15 is connected to the power supply output terminal 131 of the power supply circuit 13. The emitter of the switch tube VT1 is also connected with one end of a resistor R1, the other end of the resistor R1 is connected with the base electrode of the switch tube VT1 through a resistor R2, and the other end of the resistor R1 is also used as a control signal access end CA. The collector of the switching tube VT1 is respectively connected with one end of the bidirectional zener diode D1, the emitter of the switching tube VT3 and the electrode slice E1 of the electric pulse massage instrument 1, and the other end of the bidirectional zener diode D1 is grounded.
The emitter of the switch tube VT2 is also connected with one end of a resistor R3, the other end of the resistor R3 is connected with the base of the switch tube VT2 through a resistor R4, and the other end of the resistor R3 is also used as a control signal access end CC. The collector of the switching tube VT2 is respectively connected with one end of the bidirectional zener diode D2, the emitter of the switching tube VT4 and the electrode slice E2 of the electric pulse massage instrument 1, and the other end of the bidirectional zener diode D2 is grounded.
The base of the switch tube VT3 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with a power supply output end 131 through a resistor R6, and the other end of the resistor R5 is also used as a control signal access end CB. The base of the switch tube VT4 is connected with one end of a resistor R7, the other end of the resistor R7 is connected with a power supply output end 131 through a resistor R8, and the other end of the resistor R7 is also used as a control signal access end CD. The collector of the switching tube VT3 is connected to the collector of the switching tube VT4 and is grounded via a resistor R9.
In one example, the switching transistors VT1, VT2, VT3, and VT4 are transistors, mos transistors, and the like.
In one example, the control unit 19 may be connected to the four control signal access terminals, and the MCU inputs a control signal to the pulse modulation circuit 15 to control the on and off of the switching transistors VT1, VT2, VT3, and VT4, respectively. As in an example, the switching tube VT1 and the switching tube VT3 may be turned on or off simultaneously, the switching tube VT2 and the switching tube VT4 are turned on or off simultaneously, and the switching tube VT2 and the switching tube VT4 are turned off simultaneously when the switching tube VT1 and the switching tube VT3 are turned on; when the switching tube VT1 and the switching tube VT3 are turned off, the switching tube VT2 and the switching tube VT4 are simultaneously turned on.
In another embodiment, the switching tube VT2 and the switching tube VT4 may be turned off, and the switching tube VT3 is turned on after the switching tube VT1 is turned on for a preset time; or, the switching tube VT1 and the switching tube VT3 are turned off, and after the switching tube VT2 is turned on for a preset time, the switching tube VT4 is turned on.
The sampling circuit 17 collects an electrical signal between the power supply output 131 and the electrical signal input 151. The electrical signal collected by the sampling circuit 17 may be a current signal or a voltage signal. Specifically, the sampling circuit 17 includes a sampling portion 171, and the sampling circuit 17 collects an electrical signal between the power supply output terminal 131 and the electrical signal input terminal 151 through the sampling portion 171.
In one example, the sampling unit 171 is directly and electrically connected between the power supply output terminal 131 of the power supply circuit 13 and the electrical signal input terminal 151 of the pulse modulation circuit 15, and the sampling circuit 17 directly obtains the current signal flowing between the power supply output terminal 131 and the electrical signal input terminal 151 through the sampling unit 171. Alternatively, the sampling circuit 17 converts a current signal flowing between the power supply output terminal 131 and the electric signal input terminal 151 into a voltage signal by the sampling unit 171, and collects the voltage signal.
For example, in order to electrically connect the power supply output terminal 131 and the electrical signal input terminal 151 to the sampling part 171, as shown in fig. 9 to 11, the sampling part 171 may be a first resistor 171a, the first resistor 171a is connected between the power supply output terminal 131 and the electrical signal input terminal 151, and the current signal between the power supply output terminal 131 and the electrical signal input terminal 151 is collected through the first resistor 171 a.
In another example, the sampling section 171 is not electrically connected to the power supply output terminal 131 of the power supply circuit 13 and the electrical signal input terminal 151 of the pulse modulation circuit 15, and at this time, the power supply output terminal 131 of the power supply circuit 13 is directly electrically connected to the electrical signal input terminal 151 of the pulse modulation circuit 15. The sampling portion 171 is disposed near a connection line connecting the power supply output terminal 131 and the electric signal input terminal 151, and the sampling portion 171 collects an electric signal on the connection line between the power supply output terminal 131 and the electric signal input terminal 151 by an electromagnetic effect. For example, the sampling part 171 may be a hall sensor, a transformer, or the like.
The sampling circuit 17 may further include a current-voltage conversion circuit, a filter circuit, and the like connected to the first resistor 171a, and may process the electric signal collected by the sampling unit 171.
Since the electric pulse signal transmitted on the pulse modulation circuit 15 is small, for example, the working current on the pulse modulation circuit 15 is 20 milliamperes in the normal working state of the electric pulse massager 1, the electric signal collected by the sampling circuit 17 is also small, so that the control unit 19 can obtain the maximum electric signal, and the sensitivity of the control unit 19 for monitoring abnormal conditions is enhanced.
In one example, as shown in fig. 8, the electric pulse massage apparatus 1 further includes an amplifying circuit 21. The amplifying circuit 21 is connected between the sampling circuit 17 and the control unit 19, and is configured to amplify the electrical signal collected by the sampling circuit 17 and transmit the amplified electrical signal to the control unit.
In one example, the amplification factor of the amplification circuit 21 is 15 times to 25 times. It can be appreciated that the larger the magnification, the higher the sensitivity of the monitoring; however, the larger the amplification factor, the higher the requirement for the amplifying circuit. The utility model can meet the requirement of monitoring sensitivity and control the cost by limiting the amplification factor of the amplifying circuit 21 to 15 times to 25 times.
For example, the amplification factor of the amplification circuit 21 is 16 times, the amplification factor of the amplification circuit 21 is 17 times, the amplification factor of the amplification circuit 21 is 18 times, the amplification factor of the amplification circuit 21 is 19 times, the amplification factor of the amplification circuit 21 is 20 times, the amplification factor of the amplification circuit 21 is 21 times, the amplification factor of the amplification circuit 21 is 22 times, the amplification factor of the amplification circuit 21 is 24 times, and the like, and the amplification factor of the amplification circuit 21 is determined according to the actual need of the electric pulse massager 1.
In the example where the sampling portion 171 is the first resistor 171a, and the first resistor 171a is connected between the power supply output terminal 131 and the electric signal input terminal 151, the amplifying circuit 21 has the following implementations:
the first implementation mode: as shown in fig. 9, the amplifying circuit 21 includes an operational amplifier 211, a second resistor 212, and a third resistor 213. One end of the second resistor 212 is connected between the first resistor 171a and the power supply output end 131, and the other end of the second resistor 212 is connected to the first input end of the operational amplifier 211. One end of the third resistor 213 is connected between the first resistor 171a and the electric signal input terminal 151, and the other end of the third resistor 213 is connected to the second input terminal of the operational amplifier 211.
It should be noted that, in the design, the magnitude of the sampled electrical signal may be adjusted by adjusting the resistance value of the first resistor 171 a. The input matching of the operational amplifier 211 is adjusted by adjusting the resistance values of the second resistor 212 and the third resistor 213. In addition, the positive voltage terminal of the operational amplifier 211 is connected to the voltage terminal of the external voltage source, for example, the positive voltage terminal of the operational amplifier 211 is connected to the voltage pin on the MCU of the electric pulse massager 1 (adc_vcc shown in fig. 9 to 11). The negative voltage of the operational amplifier 211 is grounded. The output of the operational amplifier 211 is connected to the control unit 19.
It should be noted that the first input terminal of the operational amplifier 211 may be an inverting input terminal of the operational amplifier 211, and the second input terminal of the operational amplifier 211 may be a non-inverting input terminal of the operational amplifier 211.
The second implementation mode: as shown in fig. 10, the amplifying circuit 21 includes an operational amplifier 211, a second resistor 212, a third resistor 213, a fourth resistor 214, and a fifth resistor 215. One end of the second resistor 212 is connected between the first resistor 171a and the power supply output end 131, and the other end of the second resistor 212 is connected to the first input end of the operational amplifier 211. One end of the fourth resistor 214 is connected to the first input end of the operational amplifier 211, and the other end of the fourth resistor 214 is connected to the output end of the operational amplifier 211; one end of the fifth resistor 215 is connected to the second input end of the operational amplifier 211, and the other end of the fifth resistor 215 is grounded. The magnitude of the sampled electrical signal is adjusted by adjusting the resistance value of the first resistor 171 a. The input matching of the operational amplifier 211 is adjusted by adjusting the resistance values of the second resistor 212, the third resistor 213, the fourth resistor 214, and the fifth resistor 215.
In addition, the positive voltage terminal of the operational amplifier 211 is connected to the voltage terminal of the external voltage source, for example, the positive voltage terminal of the operational amplifier 211 is connected to the voltage pin on the MCU of the electric pulse massager 1 (adc_vcc shown in fig. 9 to 11). The negative voltage of the operational amplifier 211 is grounded. The output of the operational amplifier 211 is connected to the control unit 19. It should be noted that the first input terminal of the operational amplifier 211 may be an inverting input terminal of the operational amplifier 211, and the second input terminal of the operational amplifier 211 may be a non-inverting input terminal of the operational amplifier 211.
Third implementation: as shown in fig. 11, the amplifying circuit 21 includes an operational amplifier 211, a second resistor 212, a third resistor 213, a fourth resistor 214, a fifth resistor 215, and a sixth resistor 216. One end of the second resistor 212 is connected between the first resistor 171a and the power supply output end 131, and the other end of the second resistor 212 is connected to the first input end of the operational amplifier 211. One end of the fourth resistor 214 is connected to the first input end of the operational amplifier 211, and the other end of the fourth resistor 214 is connected to the output end of the operational amplifier 211; one end of the fifth resistor 215 is connected to the second input end of the operational amplifier 211, and the other end of the fifth resistor 215 is grounded; one end of the sixth resistor 216 is connected to the output end of the operational amplifier 211, and the other end of the sixth resistor 216 is grounded. The magnitude of the sampled electrical signal is adjusted by adjusting the resistance value of the first resistor 171 a. The input matching of the operational amplifier 211 is adjusted by adjusting the resistance values of the second resistor 212, the third resistor 213, the fourth resistor 214, and the fifth resistor 215. The sixth resistor 216 serves as an output resistor of the operational amplifier 211. In addition, the positive voltage terminal of the operational amplifier 211 is connected to the voltage terminal of the external voltage source, for example, the positive voltage terminal of the operational amplifier 211 is connected to the voltage pin on the MCU of the electric pulse massager 1 (adc_vcc shown in fig. 9 to 11). The negative voltage of the operational amplifier 211 is grounded. The output of the operational amplifier 211 is connected to the control unit 19. It should be noted that the first input terminal of the operational amplifier 211 may be an inverting input terminal of the operational amplifier 211, and the second input terminal of the operational amplifier 211 may be a non-inverting input terminal of the operational amplifier 211.
The control unit 19 is connected to the power supply circuit 13, and controls the power supply circuit 13, specifically, the control unit 19 controls the magnitude of the electric signal output from the power supply circuit 13 to the pulse modulation circuit 15.
In one mode, the control unit 19 is connected to the sampling circuit 17, receives the electrical signal collected and transmitted by the sampling circuit 17, when the electrode plate 11 of the electric pulse massage apparatus 1 is not completely attached to the skin of the human body, or when the interface exposed in the operation process of the electric pulse massage apparatus 1 is touched by mistake, the current signal in the pulse modulation circuit 15 is increased instantaneously, at this time, the current signal collected by the collecting circuit is larger than that of the electric pulse massage apparatus 1 under the normal operation condition, the control unit 19 determines based on the suddenly increased electrical signal, the electric pulse massage apparatus 1 generates the abnormality, and the control unit 19 controls the power supply circuit 13 to stop outputting the electrical signal to the pulse modulation circuit 15 or to reduce the output voltage.
For example, a safety range, an intermediate range, and a hazard range are set. The electric signal received by the control unit 19 is within a safe range, and the control unit 19 does not control the power supply circuit 13. The electric signal received by the control unit 19 is within the intermediate range, and the control unit 19 controls the power supply circuit 13 to reduce the electric signal output to the pulse modulation circuit 15. The electric signal received by the control unit 19 is within the intermediate range, and the control unit 19 controls the power supply circuit 13 to stop outputting the electric signal to the pulse modulation circuit 15.
The control unit 19 may be implemented in a plurality of ways, and in one example, the control unit 19 is an MCU, and the control unit 19 may be an MCU of the electric pulse massager 1 itself, or may be a control device independent of the MCU of the electric pulse massager 1 itself. In addition, the control unit 19 may be further connected to the operational amplifier 211 to supply power to the operational amplifier 211. For example, when the control unit 19 is an MCU, the MCU has a voltage pin connected to the power supply terminal of the operational amplifier 211. The control unit 19 may also be connected to the pulse modulation circuit 15 to control the pulse modulation circuit 15.
In some implementations of the control unit 19, the control unit 19 can only recognize digital signals, and the control unit 19 does not integrate an analog-to-digital conversion module. To solve this problem, in one example, as shown in fig. 12, the electric pulse massage machine 1 further includes an analog-to-digital conversion circuit. In examples where the electric pulse massage apparatus 1 does not include the amplifying circuit 21, an analog-to-digital conversion circuit is connected between the sampling circuit 17 and the control unit 19. The analog-to-digital conversion circuit converts the analog signal output from the sampling circuit 17 into a digital signal, and transmits the digital signal to the control unit 19. In the example in which the electric pulse massage machine 1 comprises the amplifying circuit 21, an analog-to-digital conversion circuit is connected between the output of the operational amplifier 211 and the control unit 19. The analog-to-digital conversion circuit converts the analog signal output from the operational amplifier 211 into a digital signal, and transmits the digital signal to the control unit 19.
The electric pulse massage apparatus 1 includes a power supply circuit 13, a pulse modulation circuit 15, a sampling circuit 17, and a control unit 19. The power supply circuit 13 includes a power supply output terminal 131, and the pulse modulation circuit 15 includes an electrical signal input terminal 151. During operation of the electric pulse massage apparatus 1, the sampling circuit 17 collects an electric signal between the power supply output terminal 131 and the electric signal input terminal 151 through the sampling section 171 on the sampling circuit 17. The sampling circuit 17 is connected to the control unit 19, and transmits the acquired electrical signals to the control unit 19. And the control unit 19 is connected with the power supply circuit 13, so as to control the power supply circuit 13, and when the electric signal collected by the sampling circuit 17 suddenly rises, the control unit controls the power supply circuit 13 to stop supplying power or reduce the output electric signal, so as to reduce the electric signal in the pulse modulation circuit 15, avoid the problem that the electric signal output to the human body by the pulse modulation circuit 15 is too large to cause harm to the human body, and improve the safety performance of the electric pulse massage instrument 1.
In addition, the collected electric signals can be adjusted and amplified according to actual measurement, so that the rapid and sensitive response can be realized on abnormal mutation.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. An electric pulse massage apparatus, characterized in that the electric pulse massage apparatus comprises:
the power supply circuit comprises a power supply output end;
the pulse modulation circuit comprises an electric signal input end;
the sampling circuit comprises a sampling part, and the sampling circuit is used for collecting an electric signal between the power supply output end and the electric signal input end through the sampling part;
the control unit is connected with the sampling circuit; the control unit is connected with the power supply circuit and used for controlling the power supply circuit.
2. The electric pulse massage apparatus of claim 1, wherein the sampling portion is a first resistor connected between the power supply output and the electrical signal input.
3. The electric pulse massage apparatus of claim 1, further comprising an amplifying circuit connected between the sampling circuit and the control unit for amplifying the electric signal collected by the sampling circuit.
4. The electric pulse massage apparatus of claim 3, wherein the sampling portion is a first resistor connected between the power supply output terminal and the electric signal input terminal;
the amplifying circuit comprises an operational amplifier, a second resistor and a third resistor, one end of the second resistor is connected between the first resistor and the power supply output end, and the other end of the second resistor is connected with the first input end of the operational amplifier; one end of the third resistor is connected between the first resistor and the electric signal input end, and the other end of the third resistor is connected with the second input end of the operational amplifier.
5. The electric pulse massage apparatus of claim 4, wherein the amplifying circuit further comprises a fourth resistor and a fifth resistor, one end of the fourth resistor is connected to the first input terminal of the operational amplifier, and the other end of the fourth resistor is connected to the output terminal of the operational amplifier; one end of the fifth resistor is connected to the second input end of the operational amplifier, and the other end of the fifth resistor is grounded.
6. The electric pulse massage apparatus of claim 5, wherein the first input of the operational amplifier is an inverting input and the second input of the operational amplifier is a non-inverting input; and/or the number of the groups of groups,
the amplifying circuit further comprises a sixth resistor, one end of the sixth resistor is connected to the output end of the operational amplifier, and the other end of the sixth resistor is grounded; and/or the number of the groups of groups,
the control unit is an MCU, the MCU is provided with a voltage pin, and the voltage pin is connected with a power supply access end of the operational amplifier; and/or the number of the groups of groups,
the electric pulse massage instrument further comprises an analog-to-digital conversion circuit, and the analog-to-digital conversion circuit is connected between the output end of the operational amplifier and the control unit.
7. The electric pulse massage apparatus of claim 3, wherein the amplification circuit has an amplification factor of 15 to 25.
8. The electric pulse massage apparatus of claim 1, further comprising an analog-to-digital conversion circuit connected between the sampling circuit and the control unit; and/or the control unit is also connected with the pulse modulation circuit.
9. The electric pulse massage apparatus of claim 1, wherein the sampling portion is disposed near a connection line connecting the power supply output terminal and the electric signal input terminal.
10. The electric pulse massage apparatus according to any one of claims 1 to 9, characterized in that the electric pulse massage apparatus further comprises an electrode sheet;
the electrode plate is connected in the pulse modulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222191399.9U CN219595626U (en) | 2022-08-19 | 2022-08-19 | Electric pulse massage instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222191399.9U CN219595626U (en) | 2022-08-19 | 2022-08-19 | Electric pulse massage instrument |
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| Publication Number | Publication Date |
|---|---|
| CN219595626U true CN219595626U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222191399.9U Active CN219595626U (en) | 2022-08-19 | 2022-08-19 | Electric pulse massage instrument |
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| CN (1) | CN219595626U (en) |
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