CN215426959U - Low-frequency electrical stimulation equipment - Google Patents
Low-frequency electrical stimulation equipment Download PDFInfo
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- CN215426959U CN215426959U CN202022873642.6U CN202022873642U CN215426959U CN 215426959 U CN215426959 U CN 215426959U CN 202022873642 U CN202022873642 U CN 202022873642U CN 215426959 U CN215426959 U CN 215426959U
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Abstract
The application discloses a low-frequency electrical stimulation device, which comprises a lithium battery power supply; the BOOST circuit is connected with the lithium battery power supply and used for boosting the voltage output by the lithium battery power supply and outputting the boosted voltage to the low-frequency driving circuit; the low-frequency driving circuit is connected with the BOOST circuit and used for outputting electric stimulation; the detection circuit is connected between the output end of the low-frequency electrical stimulation device and the electrode plate, is connected with the controller and is used for detecting the attachment state of the electrode plate and feeding back the attachment state of the electrode plate to the controller; and the controller is used for controlling the low-frequency driving circuit to output electric stimulation when the electrode plates are attached normally. The low-frequency electrical stimulation device is convenient to carry and high in safety.
Description
Technical Field
The application relates to the technical field of electrical stimulation treatment, in particular to low-frequency electrical stimulation equipment.
Background
The low-frequency electrical stimulation device refers to a device for treating diseases by applying current with the frequency below 1000 Hz. At present, a voltage boosting device of the electrical stimulation equipment adopts a transformer to boost voltage, and is influenced by the volume of the transformer, and most of the electrical stimulation equipment in the market is desk-top equipment with heavy volume. Moreover, the existing electrical stimulation equipment can work only by plugging 220V mains supply, and is inconvenient to carry due to lack of an internal power supply. In addition, most of the existing electrostimulation devices lack a contact detection circuit, so that the electrostimulation devices can start output even if the electrode slice does not contact a treatment part, thereby bringing potential safety hazards to patients.
In view of the above, it is an urgent technical problem to provide a safe and portable low-frequency electrical stimulation device.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to provide a low frequency electro-stimulation device, this low frequency electro-stimulation device is portable and the security is high.
In order to solve the above technical problem, the present application provides a low frequency electrical stimulation apparatus, including:
a lithium battery power supply;
the BOOST circuit is connected with the lithium battery power supply and used for boosting the voltage output by the lithium battery power supply and outputting the boosted voltage to the low-frequency driving circuit;
the low-frequency driving circuit is connected with the BOOST circuit and used for outputting electric stimulation;
the detection circuit is connected between the output end of the low-frequency electrical stimulation device and the electrode plate, is connected with the controller and is used for detecting the attachment state of the electrode plate and feeding back the attachment state of the electrode plate to the controller;
and the controller is used for controlling the low-frequency driving circuit to output electric stimulation when the electrode plates are attached normally.
Optionally, the BOOST voltage BOOST circuit includes:
the control branch is connected with the controller and the output end of the lithium battery power supply and used for supplying power to the boosting branch after receiving the boosting enabling signal output by the controller;
the boosting branch circuit is connected with the output end of the control branch circuit and is used for boosting the voltage output by the control branch circuit;
and the feedback branch circuit is connected with the output end of the boosting branch circuit, detects the voltage output by the boosting branch circuit and feeds back the voltage output by the boosting branch circuit to the controller.
Optionally, the control branch includes:
the circuit comprises a first switch tube, a second switch tube, a first resistor, a second resistor and a third resistor;
the first end of the first switch tube is connected with the controller after being connected with the first resistor in series, the third end of the first switch tube and the first end of the second switch tube are both connected with one end of the second resistor, the other end of the second resistor is connected with the output end of the lithium battery power supply, and the second end of the first switch tube is grounded; the second end of the second switching tube is connected with the output end of the lithium battery power supply, and the third end of the second switching tube is used as the output end of the control branch and is connected with the boosting branch and grounded; one end of the third resistor is grounded, and the other end of the third resistor is connected with the controller; when the controller controls the first switch tube to be conducted, the second switch tube is conducted, and the control branch supplies power to the boosting branch.
Optionally, the boost branch includes:
the circuit comprises a third switching tube, a fourth switching tube, a first capacitor, a second capacitor, a third capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, an inductor, a first diode and a second diode;
the first capacitor is connected with the second capacitor in parallel, a first common end is connected with one end of the inductor and the output end of the control branch circuit, and a second common end is grounded; the other end of the inductor is connected with the anode of the first diode; the cathode of the first diode is connected with one end of the third capacitor, the cathode of the second diode and one end of the sixth resistor, and is used as the output end of the boosting branch circuit; the other end of the third capacitor and the anode of the second diode are both grounded, and the other end of the sixth resistor is connected with the third end of the fourth switching tube; the first end of the fourth switching tube is connected with the controller after being connected with the seventh resistor in series, and the second end of the fourth switching tube is grounded; the first end of the third switching tube is connected with the controller after being connected with the fourth resistor in series, the third end of the third switching tube is connected with the anode of the first diode, and the second end of the third switching tube is grounded; one end of the fifth resistor is connected with the first end of the third switching tube, and the other end of the fifth resistor is connected with the second end of the third switching tube; one end of the eighth resistor is connected with the controller, and the other end of the eighth resistor is connected with the second end of the fourth switch tube.
Optionally, the feedback branch includes:
a ninth resistor, a tenth resistor, a fourth capacitor and a third diode;
one end of the ninth resistor is connected with the output end of the boosting branch circuit, the other end of the ninth resistor is connected with one end of the tenth resistor, the other end of the tenth resistor is grounded, one end of the fourth capacitor and the cathode of the third diode are connected between the ninth resistor and the tenth resistor and serve as the output end of the feedback branch circuit to be connected with the controller, and the other end of the fourth capacitor and the anode of the third diode are grounded.
Optionally, the low frequency driving circuit includes:
a fifth switch tube, a sixth switch tube, a seventh switch tube, an eighth switch tube, a ninth switch tube, a tenth switch tube, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, and a twentieth resistor;
a first end of the fifth switching tube is connected with the controller after being connected with the eleventh resistor in series, a third end of the fifth switching tube is connected with first ends of the thirteenth resistor, the fourteenth resistor and the fifteenth resistor, and a second end of the fifth switching tube is grounded; a second end of the fourteenth resistor is connected to the output end of the BOOST circuit, a second end of the thirteenth resistor is connected to the first end of the seventh switching tube, and a second end of the fifteenth resistor is connected to the first end of the sixth switching tube; the second end of the seventh switching tube is connected with the first electrode plate, and the third end of the seventh switching tube is grounded; a second end of the sixth switch tube is connected with the output end of the BOOST circuit, and a third end of the sixth switch is connected with a second electrode plate; two ends of the twelfth resistor are respectively connected with the first end and the second end of the fifth switching tube; a first end of the eighth switching tube is connected with the controller after being connected with the sixteenth resistor in series, a third end of the eighth switching tube is connected with first ends of the eighteenth resistor, the nineteenth resistor and the twentieth resistor, and a second end of the eighth switching tube is grounded; a second end of the nineteenth resistor is connected with the output end of the BOOST circuit, a second end of the eighteenth resistor is connected with a first end of the tenth switching tube, and a second end of the twentieth resistor is connected with a first end of the ninth switching tube; a second end of the tenth switching tube is connected with the second electrode plate, and a third end of the tenth switching tube is grounded; a second end of the ninth switch tube is connected with the output end of the BOOST circuit, and a third end of the ninth switch is connected with the first electrode plate; and two ends of the seventeenth resistor are respectively connected with the first end and the second end of the eighth switching tube.
Optionally, the low frequency driving circuit further includes:
an eleventh switch tube, a fourth diode, a fifth diode, a twenty-first resistor, a twenty-second resistor and a fifth capacitor;
the anode of the fourth diode is connected with the third end of the seventh switching tube, the cathode of the fourth diode is connected with the anode of the fifth diode, and the cathode of the fifth diode is grounded; a first end of the eleventh switching tube is connected with one end of the twenty-first resistor, a second end of the eleventh switching tube is grounded, and a third end of the eleventh switching tube is connected with the controller and one end of the twenty-second resistor; the other end of the twenty-first resistor is connected with the third end of the seventh switching tube and the third end of the tenth switching tube, and the other end of the twenty-second resistor is connected with a preset voltage; and two ends of the fifth capacitor are respectively connected with the second end and the third end of the eleventh switch tube.
Optionally, the lithium battery power supply includes:
the system comprises a lithium battery, a lithium battery charging module, a lithium battery electric quantity detection module, a direct current boosting module and a power-on control module; the lithium battery charging module is connected with the lithium battery electric quantity detection module and the controller, and the lithium battery electric quantity detection module is also connected with the lithium battery and the power-on control module; the power-on control module is also connected with the direct-current boosting module, and the output end of the direct-current boosting module is used as the output end of the lithium battery power supply.
Optionally, the power-up control module includes:
a twelfth switch tube, a thirteenth switch tube, a key, a seventh diode, an eighth diode, a ninth diode, a twelfth diode, a sixth capacitor, a seventh capacitor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor and a twenty-ninth resistor;
a first end of the thirteenth switching tube is connected with the ninth diode and a cathode of the twelfth diode, a second end of the thirteenth switching tube is grounded, and a third end of the thirteenth switching tube is connected with a first end of the twelfth switching tube; an anode of the ninth diode is connected with one end of the twenty-fifth resistor, and the other end of the twenty-fifth resistor is connected with one end of the seventh capacitor, between the twenty-seventh resistor and the twenty-eighth resistor and the controller; the other end of the seventh capacitor is grounded; one end of the twenty-seventh resistor is connected with a power adapter, the other end of the twenty-seventh resistor is connected with one end of the twenty-eighth resistor, and the other end of the twenty-eighth resistor is grounded; an anode of the twelfth pole tube is connected with one end of the twenty-sixth resistor, the other end of the twenty-sixth resistor is connected with one end of the twenty-ninth resistor and the controller, and the other end of the twenty-ninth resistor is grounded; one end of the twenty-third resistor and the third end of the twelfth switching tube are both connected with the input end of the boosting module, the other end of the twenty-third resistor is connected with the controller and the anode of the seventh diode, the cathode of the seventh diode is connected with the first end of the key, and the second end of the key is grounded; one end of the twenty-fourth resistor is connected with the second end of the twelfth switching tube, the other end of the twenty-fourth resistor is connected with the anode of the eighth diode, and the cathode of the eighth diode is connected with the first end of the key; and the two ends of the sixth capacitor are respectively connected with the first end and the second end of the twelfth switch tube, and the second end of the twelfth switch tube is connected with the battery power supply end of the lithium battery power detection circuit.
Optionally, the detection circuit includes:
the touch control circuit comprises a first optical coupling solid-state relay, a second optical coupling solid-state relay, a first touch chip, a second touch chip, a thirtieth resistor, a thirty-first resistor, a thirty-second resistor, a thirty-third resistor, a thirty-fourth resistor and a thirty-fifth resistor;
the first end of the first optical coupling solid-state relay is connected with a preset voltage after being connected with the thirtieth resistor in series, the second end of the first optical coupling solid-state relay is connected with the controller, the third end of the first optical coupling solid-state relay is connected with the thirty-first resistor in series and then connected with the input end of the first touch chip, the fourth end of the first optical coupling solid-state relay is connected between the output end of the low-frequency electrical stimulation device and the first electrode plate, the output end of the first touch chip is connected with the controller, and the output end of the first optical coupling solid-state relay is connected with the preset voltage after being connected with the thirty-second resistor in series; the first end of the second optical coupling solid-state relay is connected with a preset voltage after being connected with the thirty-third resistor in series, the second end of the second optical coupling solid-state relay is connected with the controller, the third end of the second optical coupling solid-state relay is connected with the thirty-fourth resistor in series and then connected with the input end of the second touch chip, the fourth end of the second optical coupling solid-state relay is connected with the output end of the low-frequency electrical stimulation device and the position between the second electrode plates, the output end of the second touch chip is connected with the controller, and the preset voltage is connected after being connected with the thirty-fifth resistor in series.
The application provides a low frequency electrical stimulation device comprising: a lithium battery power supply; the BOOST circuit is connected with the lithium battery power supply and used for boosting the voltage output by the lithium battery power supply and outputting the boosted voltage to the low-frequency driving circuit; the low-frequency driving circuit is connected with the BOOST circuit and used for outputting electric stimulation; the detection circuit is connected between the output end of the low-frequency electrical stimulation device and the electrode plate, is connected with the controller and is used for detecting the attachment state of the electrode plate and feeding back the attachment state of the electrode plate to the controller; and the controller is used for controlling the low-frequency driving circuit to output electric stimulation when the electrode plates are attached normally.
Therefore, compared with the traditional technical scheme of boosting by adopting a transformer, the low-frequency electrical stimulation equipment provided by the application adopts the BOOST circuit to BOOST, so that the volume of the equipment can be effectively reduced. In addition, the low frequency electrical stimulation equipment that this application provided adopts the scheme of inside lithium cell power supply, and equipment can break away from 220V's commercial power work, makes equipment conveniently carry. In addition, the low frequency electro photoluminescence equipment that this application provided adds detection circuitry, can detect electrode slice and patient's treatment position before the output electro photoluminescence through this detection circuitry and whether adhere well to just output electro photoluminescence under the good condition of electrode slice adhesion, thereby improve the security of electrotherapy.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a low-frequency electrostimulation device according to an embodiment of the present application;
fig. 2 is a schematic diagram of a BOOST voltage BOOST circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a low frequency driving circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a lithium battery charging module according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a lithium battery power detection module according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a dc boost module according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of a power-up control module according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of a detection circuit according to an embodiment of the present disclosure.
Detailed Description
The core of this application is to provide a low frequency electrical stimulation equipment, this low frequency electrical stimulation equipment is portable and the security is high.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a low-frequency electrical stimulation apparatus provided in an embodiment of the present application, and referring to fig. 1, the apparatus includes:
a lithium battery power supply 10;
a BOOST circuit 20 connected to the lithium battery power supply 10 for boosting the voltage output by the lithium battery power supply 10 and outputting the boosted voltage to the low frequency driving circuit 30;
a low frequency driving circuit 30 connected to the BOOST circuit 20 for outputting electrical stimulation;
a detection circuit 40 connected between the output end of the low-frequency electrical stimulation device and the electrode plate, and connected with the controller 50, and used for detecting the attachment state of the electrode plate and feeding back the attachment state of the electrode plate to the controller 50;
and a controller 50 for controlling the low frequency driving circuit 30 to output the electrical stimulation when the electrode sheet is attached normally.
Specifically, the low-frequency electrical stimulation device provided by the application is provided with the BOOST circuit 20, the BOOST circuit 20 is respectively connected with the output end of the lithium battery power supply 10 and the low-frequency driving circuit 30, and the BOOST circuit 20 performs BOOST processing to BOOST the direct-current voltage 5V to a required magnitude, such as 80V.
In a specific embodiment, the BOOST converter circuit 20 includes: a control branch circuit connected with the controller 50 (which may be a single chip microcomputer) and the output end of the lithium battery power supply 10, and used for supplying power to the boosting branch circuit after receiving the boosting enable signal output by the controller 50; the boosting branch circuit is connected with the output end of the control branch circuit and is used for boosting the voltage output by the control branch circuit; and a feedback branch connected to the output terminal of the boosting branch, for detecting the voltage outputted from the boosting branch and feeding back the voltage outputted from the boosting branch to the controller 50.
Specifically, in this embodiment, the BOOST circuit 20 includes a control branch, a BOOST branch, and a feedback branch. When the controller 50 controls the control branch to be conducted, power is supplied to the boosting branch, and the boosting branch performs boosting processing. The output end of the BOOST branch circuit is the output end of the BOOST circuit 20, and the feedback branch circuit is connected to the output end of the BOOST branch circuit and is responsible for detecting the voltage output by the BOOST branch circuit and feeding back the voltage to the controller 50, so that the controller 50 adjusts the output intensity and ensures the stability of the output intensity.
Referring to fig. 2, in a specific embodiment, the control branch includes: the circuit comprises a first switch tube Q1, a second switch tube Q2, a first resistor R1, a second resistor R2 and a third resistor R3; a first end of the first switch tube Q1 is connected in series with the first resistor R1 and then connected with the controller 50, a third end of the first switch tube Q1 and a first end of the second switch tube Q2 are both connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the output end of the lithium battery power supply 10, and a second end of the first switch tube Q1 is grounded; a second end of the second switching tube Q2 is connected with the output end of the lithium battery power supply 10, and a third end of the second switching tube Q2 is used as the output end of the control branch circuit and is connected with the boosting branch circuit and grounded; one end of the third resistor R3 is grounded, and the other end of the third resistor R3 is connected with the controller 50; when the controller 50 controls the first switch tube Q1 to be conducted, the second switch tube Q2 is conducted, and the control branch supplies power to the boost branch.
The branch circuit that steps up includes: a third switching tube Q3, a fourth switching tube Q4, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, an inductor L, a first diode D1, and a second diode D2; the first capacitor C1 is connected in parallel with the second capacitor C2, the first common end is connected with one end of the inductor L and the output end of the control branch circuit, and the second common end is grounded; the other end of the inductor L is connected with the anode of a first diode D1; the cathode of the first diode D1 is connected to one end of the third capacitor C3, the cathode of the second diode D2 and one end of the sixth resistor R6, and is used as the output end of the boost branch circuit; the other end of the third capacitor C3 and the anode of the second diode D2 are both grounded, and the other end of the sixth resistor R6 is connected to the third end of the fourth switching tube Q4; a first end of a fourth switching tube Q4 is connected in series with a seventh resistor R7 and then connected with the controller 50, and a second end of the fourth switching tube Q4 is grounded; a first end of a third switching tube Q3 is connected in series with a fourth resistor R4 and then connected with the controller 50, a third end of the third switching tube Q3 is connected with the anode of a first diode D1, and a second end of the third switching tube Q3 is grounded; one end of the fifth resistor R5 is connected to the first end of the third switching tube Q3, and the other end of the fifth resistor R5 is connected to the second end of the third switching tube Q3; one end of the eighth resistor R8 is connected to the controller 50, and the other end of the eighth resistor R8 is connected to the second end of the fourth switching transistor Q4.
The feedback branch comprises: a ninth resistor R9, a tenth resistor R10, a fourth capacitor C4, and a third diode D3; one end of a ninth resistor R9 is connected with the output end of the boosting branch circuit, the other end of the ninth resistor R9 is connected with one end of a tenth resistor R10, the other end of the tenth resistor R10 is grounded, one end of a fourth capacitor C4 and the cathode of a third diode D3 are both connected between the ninth resistor R9 and the tenth resistor R10 and serve as the output end of the feedback branch circuit to be connected with the controller 50, and the other end of the fourth capacitor C4 and the anode of the third diode D3 are both grounded.
The first switch Q1 and the fourth switch may be triodes, and the second switch Q2 and the third switch Q3 may be MOS transistors. The first ends of the first switch tube Q1 and the fourth switch tube Q4 are bases of the triodes, the second ends are emitters of the triodes, and the third ends are collectors of the triodes. The first ends of the second switch tube Q2 and the third switch tube Q3 are the gates of MOS transistors, the second end is the source of the MOS transistor, and the third end is the drain of the MOS transistor.
Based on the above circuit structure, the operation principle of the BOOST circuit 20 is as follows:
in the figure, 5V0 represents the 5V voltage output by the lithium battery power supply 10, and when the DP _ OUT signal output by the controller 50 is at a high level, the first switching tube Q1 is turned on, and further the second switching tube Q2 is turned on, so as to supply power to the subsequent voltage boosting branch, and the voltage boosting branch performs the voltage boosting processing. When the control signal PWM _4k + output by the controller 50 to the third switching tube Q3 is a PWM signal with a frequency of 4k and a duty ratio of 50%, the boost branch can output a voltage of 80V at maximum. The frequency of the control signal PWM _4 k-output by the controller 50 to the fourth switching tube Q4 is 4k, the duty ratio is adjustable, when the required output intensity is larger, the duty ratio of the corresponding adjustment PWM _4 k-is smaller, and conversely, when the required output intensity is smaller, the duty ratio of the corresponding adjustment PWM _4 k-is larger. Furthermore, the output intensity can also be varied by varying the parameters of the inductance L. The feedback branch detects the final output voltage of the boost branch and feeds the final output voltage back to the controller 50, and then the controller 50 can adjust the duty ratio of the PWM _4 k-according to the feedback voltage value, so that the output is more stable.
The low frequency driving circuit 30 is connected to the BOOST circuit 20 and is externally connected to the treatment site of the patient through an output terminal, and is responsible for outputting electrical stimulation. Referring to fig. 3, in a specific embodiment, the low frequency driving circuit 30 includes: a fifth switch tube Q5, a sixth switch tube Q6, a seventh switch tube Q7, an eighth switch tube Q8, a ninth switch tube Q9, a tenth switch tube Q10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19 and a twentieth resistor R20;
a first end of a fifth switching tube Q5 is connected in series with an eleventh resistor R11 and then connected with the controller 50, a third end of the fifth switching tube Q5 is connected with first ends of a thirteenth resistor R13, a fourteenth resistor R14 and a fifteenth resistor R15, and a second end of the fifth switching tube Q5 is grounded; a second end of the fourteenth resistor R14 is connected to the output end of the BOOST circuit 20, a second end of the thirteenth resistor R13 is connected to the first end of the seventh switch Q7, and a second end of the fifteenth resistor R15 is connected to the first end of the sixth switch Q6; the second end of the seventh switch tube Q7 is connected with the first electrode plate, and the third end of the seventh switch tube Q7 is grounded; a second end of the sixth switch tube Q6 is connected to the output end of the BOOST circuit 20, and a third end of the sixth switch is connected to the second electrode plate; two ends of the twelfth resistor R12 are respectively connected to the first end and the second end of the fifth switch tube Q5; a first end of the eighth switch tube Q8 is connected in series with the sixteenth resistor R16 and then connected with the controller 50, a third end of the eighth switch tube Q8 is connected with first ends of an eighteenth resistor R18, a nineteenth resistor R19 and a twentieth resistor R20, and a second end of the eighth switch tube Q8 is grounded; a second end of the nineteenth resistor R19 is connected to the output end of the BOOST circuit 20, a second end of the eighteenth resistor R18 is connected to the first end of the tenth switching tube Q10, and a second end of the twentieth resistor R20 is connected to the first end of the ninth switching tube Q9; a second end of the tenth switching tube Q10 is connected to the second electrode plate, and a third end of the tenth switching tube Q10 is grounded; a second end of the ninth switch tube Q9 is connected to the output end of the BOOST circuit 20, and a third end of the ninth switch is connected to the first electrode plate; two ends of the seventeenth resistor R17 are connected to the first end and the second end of the eighth switch tube Q8, respectively.
The fifth to tenth switching tubes Q5 to Q10 may be all triodes, and at this time, the first end of the fifth to tenth switching tube Q10 is a base of the triode, the second end is an emitter of the triode, and the third end is a collector of the triode.
Based on the above circuit structure, the low frequency driving circuit 30 operates as follows:
DP _1 and DP _2 are control pins connected to the controller 50, and when DP _1 is high level, the sixth switching tube Q6 and the seventh switching tube Q7 are turned on, and the low-frequency electrical stimulation current flows from the sixth switching tube Q6 to the second electrode plate (EMSB), then flows back to the first electrode plate (EMSA) through the treatment site of the patient, and further flows to ground through the seventh switching tube Q7, thereby forming a complete electrical stimulation circuit. Similarly, when DP _2 is high, the ninth switch Q9 and the tenth switch Q10 are turned on, and the low-frequency electrical stimulation current flows from the ninth switch Q9 to the first electrode plate, then flows back to the second electrode plate through the treatment site of the patient, and further flows to ground through the tenth switch Q10, thereby forming a complete electrical stimulation circuit.
Further, referring to fig. 3, on the basis of the above embodiment, the low frequency driving circuit 30 further includes: an eleventh switch tube Q11, a fourth diode D4, a fifth diode D5, a twenty-first resistor R21, a twenty-second resistor R22 and a fifth capacitor C5; the anode of the fourth diode D4 is connected to the third end of the seventh switching tube Q7, the cathode of the fourth diode D4 is connected to the anode of the fifth diode D5, and the cathode of the fifth diode D5 is grounded; a first end of the eleventh switch tube Q11 is connected to one end of the twenty-first resistor R21, a second end of the eleventh switch tube Q11 is grounded, and a third end of the eleventh switch tube Q11 is connected to the controller 50 and one end of the twenty-second resistor R22; the other end of the twenty-first resistor R21 is connected with the third end of the seventh switch tube Q7 and the third end of the tenth switch tube Q10, and the other end of the twenty-second resistor R22 is connected with a preset voltage; two ends of the fifth capacitor C5 are connected to the second end and the third end of the eleventh switch Q11, respectively.
Specifically, in the present embodiment, the low frequency driving circuit 30 is further provided with an open circuit detection circuit 40, and the open circuit detection circuit 40 is configured by an eleventh switching tube Q11, a fourth diode D4, a fifth diode D5, a twenty-first resistor R21, a twenty-second resistor R22, and a fifth capacitor C5.
When DP _1 is high, the sixth switching tube Q6 and the seventh switching tube Q7 are turned on, and the low-frequency electrical stimulation current flows from the sixth switching tube Q6 to the second electrode plate, then flows back to the first electrode plate through the treatment site of the patient, further flows through the seventh switching tube Q7 to the fourth diode D4, and finally flows through the fourth diode D4 and the fifth diode D5 to the ground, thereby forming a complete electrical stimulation circuit. Since the twenty-first resistor R21 and the eleventh switch Q11 are connected IN parallel with the fourth diode D4 and the fifth diode D5, when current flows through the fourth diode D4 and the fifth diode D5, the potential at the anode of the fourth diode D4 turns on the eleventh switch Q11, so that when an electrical stimulation current flows, the signal DP _ IN1 output to the controller 50 changes from high level to low level. Therefore, if the signal DP _ IN1 is always high, indicating that the electrode pad is detached, the controller 50 may interrupt the electrical stimulation output. Similarly, when DP _2 is at high level, the ninth switch Q9 and the tenth switch Q10 are turned on, and the low-frequency electrical stimulation current flows from the ninth switch Q9 to the first electrode plate, then flows back to the second electrode plate through the treatment site of the patient, further flows through the tenth switch Q10 to the fourth diode D4, and finally flows through the fourth diode D4 and the fifth diode D5 to ground, thereby forming a complete electrical stimulation circuit. Since the twenty-first resistor R21 and the eleventh switch Q11 are connected IN parallel with the fourth diode D4 and the fifth diode D5, when current flows through the fourth diode D4 and the fifth diode D5, the eleventh diode is turned on by the potential of the anode of the fourth diode D4, so that when an electrical stimulation current flows, the signal DP _ IN1 output to the controller 50 changes from high level to low level. Therefore, if the signal DP _ IN1 is always at a high level, it indicates that the electrode sheet is detached.
For making equipment break away from 220V's commercial power work, let equipment conveniently carry, the low frequency electrical stimulation equipment that this application provided is provided with lithium battery power 10, adopts inside lithium battery power 10 to supply power. In a specific embodiment, the lithium battery power supply 10 includes a lithium battery, a lithium battery charging module, a lithium battery power detection module, a direct current boost module, and a power-on control module; the lithium battery charging module is connected with the lithium battery electric quantity detection module and the controller 50, and the lithium battery electric quantity detection module is also connected with the lithium battery and the power-on control module; the power-on control module is further connected with a direct current boost module, and the output end of the direct current boost module is used as the output end of the lithium battery power supply 10.
In this embodiment, the circuits for battery charging, power detection, battery discharging, battery boosting, and power on during starting are independent, so that the internal logic of the lithium battery power supply 10 is more independent and the control is clearer.
Referring to fig. 4, the lithium battery charging module may specifically adopt an IP2315 chip with an integrated core, where the charging current of the lithium battery charging chip is adjustable, and the lithium battery charging chip may perform IIC communication with a controller 50, such as a single chip, so as to monitor the charging state of the lithium battery. DC _5V in fig. 4 represents a voltage of 5V representing the output of the power adapter. Referring to fig. 5, the lithium battery power detection module may adopt a special LTC2942 single lithium battery power detection chip, which can perform IIC communication with the controller 50 to monitor the power of the lithium battery in real time. H2 in FIG. 5 is connected with the lithium battery. Referring to fig. 6, the DC boost module may use a DC-DC boost chip of TPS61088 of texas instruments, through which the voltage of the lithium battery is boosted and stabilized to 5V output, to supply the whole system.
Additionally, referring to FIG. 7, in one particular embodiment, the power-up control module includes: a twelfth switch tube Q12, a thirteenth switch tube Q13, a key K, a seventh diode D7, an eighth diode D8, a ninth diode D9, a twelfth diode D10, a sixth capacitor C6, a seventh capacitor C7, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, and a twenty-ninth resistor R29; a first end of a thirteenth switching tube Q13 is connected to the ninth diode D9 and the cathode of the twelfth diode D10, a second end of the thirteenth switching tube Q13 is grounded, and a third end of the thirteenth switching tube Q13 is connected to the first end of the twelfth switching tube Q12; an anode of the ninth diode D9 is connected to one end of a twenty-fifth resistor R25, and the other end of the twenty-fifth resistor R25 is connected to one end of a seventh capacitor C7, between the twenty-seventh resistor R27 and the twenty-eighth resistor R28, and to the controller 50; the other end of the seventh capacitor C7 is grounded; one end of a twenty-seventh resistor R27 is connected with the power adapter, the other end of the twenty-seventh resistor R27 is connected with one end of a twenty-eighth resistor R28, and the other end of the twenty-eighth resistor R28 is grounded; an anode of the twelfth diode D10 is connected to one end of a twenty-sixth resistor R26, the other end of the twenty-sixth resistor R26 is connected to one end of a twenty-ninth resistor R29 and the controller 50, and the other end of the twenty-ninth resistor R29 is grounded; one end of a twenty-third resistor R23 and the third end of the twelfth switch tube Q12 are both connected with the input end of the boosting module, the other end of the twenty-third resistor R23 is connected with the controller 50 and the anode of a seventh diode D7, the cathode of the seventh diode D7 is connected with the first end of the key K, and the second end of the key K is grounded; one end of a twenty-fourth resistor R24 is connected with the second end of the twelfth switching tube Q12, the other end of the twenty-fourth resistor R24 is connected with the anode of an eighth diode D8, and the cathode of the eighth diode D8 is connected with the first end of the key K; two ends of the sixth capacitor C6 are respectively connected to the first end and the second end of the twelfth switch tube Q12, and the second end of the twelfth switch tube Q12 is connected to the battery power supply end of the lithium battery power detection circuit 40.
DC _5V in fig. 7 represents the 5V voltage output by the power adapter. The twelfth switching tube Q12 may be an MOS tube, the first end of the twelfth switching tube Q12 is a gate of the MOS tube, the second end is a source of the MOS tube, and the third end of the twelfth switching tube Q12 is a drain of the MOS tube. The thirteenth switching tube Q13 may be a triode, the first end of the thirteenth switching tube Q13 is a base of the triode, the second end is an emitter of the triode, and the third end is a collector of the triode.
Based on the circuit structure, the working principle of the power-on control module is as follows:
when the KEY K is pressed, the twelfth switching tube Q12 is turned on, the battery power supply terminal SENSE + supplies power to the input terminal BAT of the DC boost module through the twelfth switching tube Q12, at this time, the controller 50 system is powered on, the controller 50 system detects that KEY is at a low level, at this time, the controller 50 may output FT _ DC _ OUT as a high level, so that the thirteenth switching tube Q13 is turned on, so that the twelfth switching tube Q12 is turned on, and thus, even if the KEY K is lifted, the twelfth switching tube Q12 can be continuously turned on through the controller 50, and power is continuously supplied. When the external power adapter is connected, the power adapter drives the thirteenth switching tube Q13 to be conducted through the voltage division of the twenty-seventh resistor R27 and the twenty-eighth resistor R28, the twelfth switching tube Q12 is further conducted, the battery power supply end SENSE + supplies power to the input end BAT of the direct current boosting module through the twelfth switching tube Q12, at the moment, the controller 50 system is powered on, and the controller 50 system detects that FT _ DC _ IN is high level and knows that the FT _ DC _ IN is supplied power to the external power supply at the moment. Further, the controller 50 may output FT _ DC _ OUT as high level to turn on the thirteenth switching transistor Q13 to turn on the twelfth switching transistor Q12, so that even if the power adapter is removed, the twelfth switching transistor Q12 is continuously turned on by the controller 50 to continuously supply power.
For making electrical stimulation equipment safer, the low frequency electrical stimulation equipment that this application provided is provided with detection circuitry 40, through this detection circuitry 40 connection low frequency electrical stimulation equipment's output and electrode slice between to and connection director 50, can detect whether electrode slice and patient's treatment position contact is good before electrical stimulation equipment output electrical stimulation through this detection circuitry 40, so that controller 50 just outputs electrical stimulation when the electrode slice contact is good.
Referring to fig. 8, in a specific embodiment, the detection circuit 40 includes: the touch screen comprises a first optocoupler solid-state relay U1, a second optocoupler solid-state relay U2, a first touch chip U3, a second touch chip U4, a thirtieth resistor R30, a thirty-first resistor R31, a thirty-second resistor R32, a thirty-third resistor R33, a thirty-fourth resistor R34 and a thirty-fifth resistor R35; the first end of the first optocoupler solid-state relay U1 is connected with a thirty-second resistor R30 in series and then connected with preset voltage, the second end of the first optocoupler solid-state relay U1 is connected with the controller 50, the third end of the first optocoupler solid-state relay U1 is connected with a thirty-first resistor R31 in series and then connected with the input end of the first touch chip U3, the fourth end of the first optocoupler solid-state relay U1 is connected between the output end of the low-frequency electrical stimulation device and the first electrode slice, the output end of the first touch chip U3 is connected with the controller 50, and the output end of the first optocoupler solid-state relay U1 is connected with preset voltage in series and then connected with a thirty-second resistor R32; the first end of the second optocoupler solid-state relay U2 is connected with a preset voltage after being connected with a thirty-third resistor R33 in series, the second end of the second optocoupler solid-state relay U2 is connected with the controller 50, the third end of the second optocoupler solid-state relay U2 is connected with the input end of the second touch chip U4 after being connected with a thirty-fourth resistor R34 in series, the fourth end of the second optocoupler solid-state relay U2 is connected between the output end of the low-frequency electrical stimulation device and the second electrode slice, the output end of the second touch chip U4 is connected with the controller 50, and the first end of the second optocoupler solid-state relay U2 is connected with the preset voltage after being connected with a thirty-fifth resistor R35 in series.
Based on the above circuit structure, the operation principle of the detection circuit 40 is as follows:
what this embodiment adopted is capacitanc touch-sensitive principle, after the system was electrified, controller 50 output to the A detection control signal of first opto-coupler solid state relay U1 and the B detection control signal of output to second opto-coupler solid state relay U2 were the low level, first opto-coupler solid state relay U1 switches on with second opto-coupler solid state relay U2, after two electrode slices all attached to patient's treatment position, first touch chip U3 and second touch chip U4 can output stable low level signal and give controller 50, the contact of sign electrode slice and patient's treatment position is good, controller 50 can be with the A detection control signal of output to first opto-coupler solid state relay U1 and the B detection control signal of output to second opto-coupler solid state relay U2 be the high level afterwards, and can output the electro photoluminescence. On the contrary, if one of the first touch chip U3 and the second touch chip U4 fails to output a low level, it indicates that the corresponding electrode pad fails to normally contact the treatment site of the patient, and the controller 50 does not output an electrical stimulus.
In summary, the low-frequency electrical stimulation device provided by the application adopts the BOOST circuit to BOOST, so that the size of the device can be effectively reduced. In addition, the low frequency electrical stimulation equipment that this application provided adopts the scheme of inside lithium cell power supply, and equipment can break away from 220V's commercial power work, makes equipment conveniently carry. In addition, the low frequency electro photoluminescence equipment that this application provided adds detection circuitry, can detect electrode slice and patient's treatment position before the output electro photoluminescence through this detection circuitry and whether adhere well to just output electro photoluminescence under the good condition of electrode slice adhesion, thereby improve the security of electrotherapy.
Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The low frequency electrical stimulation apparatus provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A low frequency electrical stimulation apparatus comprising:
a lithium battery power supply;
the BOOST circuit is connected with the lithium battery power supply and used for boosting the voltage output by the lithium battery power supply and outputting the boosted voltage to the low-frequency driving circuit;
the low-frequency driving circuit is connected with the BOOST circuit and used for outputting electric stimulation;
the detection circuit is connected between the output end of the low-frequency electrical stimulation device and the electrode plate, is connected with the controller and is used for detecting the attachment state of the electrode plate and feeding back the attachment state of the electrode plate to the controller;
and the controller is used for controlling the low-frequency driving circuit to output electric stimulation when the electrode plates are attached normally.
2. The low frequency electrical stimulation device of claim 1, wherein the BOOST voltage circuit comprises:
the control branch is connected with the controller and the output end of the lithium battery power supply and used for supplying power to the boosting branch after receiving the boosting enabling signal output by the controller;
the boosting branch circuit is connected with the output end of the control branch circuit and is used for boosting the voltage output by the control branch circuit;
and the feedback branch circuit is connected with the output end of the boosting branch circuit, detects the voltage output by the boosting branch circuit and feeds back the voltage output by the boosting branch circuit to the controller.
3. The low frequency electrostimulation device according to claim 2, characterized in that the control branch comprises:
the circuit comprises a first switch tube, a second switch tube, a first resistor, a second resistor and a third resistor;
the first end of the first switch tube is connected with the controller after being connected with the first resistor in series, the third end of the first switch tube and the first end of the second switch tube are both connected with one end of the second resistor, the other end of the second resistor is connected with the output end of the lithium battery power supply, and the second end of the first switch tube is grounded; the second end of the second switching tube is connected with the output end of the lithium battery power supply, and the third end of the second switching tube is used as the output end of the control branch and is connected with the boosting branch and grounded; one end of the third resistor is grounded, and the other end of the third resistor is connected with the controller; when the controller controls the first switch tube to be conducted, the second switch tube is conducted, and the control branch supplies power to the boosting branch.
4. The low frequency electrostimulation device according to claim 3, characterized in that the voltage boosting branch comprises:
the circuit comprises a third switching tube, a fourth switching tube, a first capacitor, a second capacitor, a third capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, an inductor, a first diode and a second diode;
the first capacitor is connected with the second capacitor in parallel, a first common end is connected with one end of the inductor and the output end of the control branch circuit, and a second common end is grounded; the other end of the inductor is connected with the anode of the first diode; the cathode of the first diode is connected with one end of the third capacitor, the cathode of the second diode and one end of the sixth resistor, and is used as the output end of the boosting branch circuit; the other end of the third capacitor and the anode of the second diode are both grounded, and the other end of the sixth resistor is connected with the third end of the fourth switching tube; the first end of the fourth switching tube is connected with the controller after being connected with the seventh resistor in series, and the second end of the fourth switching tube is grounded; the first end of the third switching tube is connected with the controller after being connected with the fourth resistor in series, the third end of the third switching tube is connected with the anode of the first diode, and the second end of the third switching tube is grounded; one end of the fifth resistor is connected with the first end of the third switching tube, and the other end of the fifth resistor is connected with the second end of the third switching tube; one end of the eighth resistor is connected with the controller, and the other end of the eighth resistor is connected with the second end of the fourth switch tube.
5. The low frequency electrostimulation device according to claim 4, characterized in that the feedback branch comprises:
a ninth resistor, a tenth resistor, a fourth capacitor and a third diode;
one end of the ninth resistor is connected with the output end of the boosting branch circuit, the other end of the ninth resistor is connected with one end of the tenth resistor, the other end of the tenth resistor is grounded, one end of the fourth capacitor and the cathode of the third diode are connected between the ninth resistor and the tenth resistor and serve as the output end of the feedback branch circuit to be connected with the controller, and the other end of the fourth capacitor and the anode of the third diode are grounded.
6. The low frequency electrostimulation device according to claim 5, characterised in that the low frequency drive circuit comprises:
a fifth switch tube, a sixth switch tube, a seventh switch tube, an eighth switch tube, a ninth switch tube, a tenth switch tube, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, and a twentieth resistor;
a first end of the fifth switching tube is connected with the controller after being connected with the eleventh resistor in series, a third end of the fifth switching tube is connected with first ends of the thirteenth resistor, the fourteenth resistor and the fifteenth resistor, and a second end of the fifth switching tube is grounded; a second end of the fourteenth resistor is connected to the output end of the BOOST circuit, a second end of the thirteenth resistor is connected to the first end of the seventh switching tube, and a second end of the fifteenth resistor is connected to the first end of the sixth switching tube; the second end of the seventh switching tube is connected with the first electrode plate, and the third end of the seventh switching tube is grounded; a second end of the sixth switch tube is connected with the output end of the BOOST circuit, and a third end of the sixth switch is connected with a second electrode plate; two ends of the twelfth resistor are respectively connected with the first end and the second end of the fifth switching tube; a first end of the eighth switching tube is connected with the controller after being connected with the sixteenth resistor in series, a third end of the eighth switching tube is connected with first ends of the eighteenth resistor, the nineteenth resistor and the twentieth resistor, and a second end of the eighth switching tube is grounded; a second end of the nineteenth resistor is connected with the output end of the BOOST circuit, a second end of the eighteenth resistor is connected with a first end of the tenth switching tube, and a second end of the twentieth resistor is connected with a first end of the ninth switching tube; a second end of the tenth switching tube is connected with the second electrode plate, and a third end of the tenth switching tube is grounded; a second end of the ninth switch tube is connected with the output end of the BOOST circuit, and a third end of the ninth switch is connected with the first electrode plate; and two ends of the seventeenth resistor are respectively connected with the first end and the second end of the eighth switching tube.
7. The low frequency electrostimulation device according to claim 6, characterised in that the low frequency drive circuit further comprises:
an eleventh switch tube, a fourth diode, a fifth diode, a twenty-first resistor, a twenty-second resistor and a fifth capacitor;
the anode of the fourth diode is connected with the third end of the seventh switching tube, the cathode of the fourth diode is connected with the anode of the fifth diode, and the cathode of the fifth diode is grounded; a first end of the eleventh switching tube is connected with one end of the twenty-first resistor, a second end of the eleventh switching tube is grounded, and a third end of the eleventh switching tube is connected with the controller and one end of the twenty-second resistor; the other end of the twenty-first resistor is connected with the third end of the seventh switching tube and the third end of the tenth switching tube, and the other end of the twenty-second resistor is connected with a preset voltage; and two ends of the fifth capacitor are respectively connected with the second end and the third end of the eleventh switch tube.
8. The low frequency electrical stimulation apparatus of claim 7, wherein the lithium battery power source comprises:
the system comprises a lithium battery, a lithium battery charging module, a lithium battery electric quantity detection module, a direct current boosting module and a power-on control module; the lithium battery charging module is connected with the lithium battery electric quantity detection module and the controller, and the lithium battery electric quantity detection module is also connected with the lithium battery and the power-on control module; the power-on control module is also connected with the direct-current boosting module, and the output end of the direct-current boosting module is used as the output end of the lithium battery power supply.
9. The low frequency electrical stimulation apparatus of claim 8, wherein the power-on control module comprises:
a twelfth switch tube, a thirteenth switch tube, a key, a seventh diode, an eighth diode, a ninth diode, a twelfth diode, a sixth capacitor, a seventh capacitor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor and a twenty-ninth resistor;
a first end of the thirteenth switching tube is connected with the ninth diode and a cathode of the twelfth diode, a second end of the thirteenth switching tube is grounded, and a third end of the thirteenth switching tube is connected with a first end of the twelfth switching tube; an anode of the ninth diode is connected with one end of the twenty-fifth resistor, and the other end of the twenty-fifth resistor is connected with one end of the seventh capacitor, between the twenty-seventh resistor and the twenty-eighth resistor and the controller; the other end of the seventh capacitor is grounded; one end of the twenty-seventh resistor is connected with a power adapter, the other end of the twenty-seventh resistor is connected with one end of the twenty-eighth resistor, and the other end of the twenty-eighth resistor is grounded; an anode of the twelfth pole tube is connected with one end of the twenty-sixth resistor, the other end of the twenty-sixth resistor is connected with one end of the twenty-ninth resistor and the controller, and the other end of the twenty-ninth resistor is grounded; one end of the twenty-third resistor and the third end of the twelfth switching tube are both connected with the input end of the boosting module, the other end of the twenty-third resistor is connected with the controller and the anode of the seventh diode, the cathode of the seventh diode is connected with the first end of the key, and the second end of the key is grounded; one end of the twenty-fourth resistor is connected with the second end of the twelfth switching tube, the other end of the twenty-fourth resistor is connected with the anode of the eighth diode, and the cathode of the eighth diode is connected with the first end of the key; and the two ends of the sixth capacitor are respectively connected with the first end and the second end of the twelfth switch tube, and the second end of the twelfth switch tube is connected with the battery power supply end of the lithium battery power detection circuit.
10. The low frequency electrical stimulation apparatus of claim 9 wherein the detection circuit comprises:
the touch control circuit comprises a first optical coupling solid-state relay, a second optical coupling solid-state relay, a first touch chip, a second touch chip, a thirtieth resistor, a thirty-first resistor, a thirty-second resistor, a thirty-third resistor, a thirty-fourth resistor and a thirty-fifth resistor;
the first end of the first optical coupling solid-state relay is connected with a preset voltage after being connected with the thirtieth resistor in series, the second end of the first optical coupling solid-state relay is connected with the controller, the third end of the first optical coupling solid-state relay is connected with the thirty-first resistor in series and then connected with the input end of the first touch chip, the fourth end of the first optical coupling solid-state relay is connected between the output end of the low-frequency electrical stimulation device and the first electrode plate, the output end of the first touch chip is connected with the controller, and the output end of the first optical coupling solid-state relay is connected with the preset voltage after being connected with the thirty-second resistor in series; the first end of the second optical coupling solid-state relay is connected with a preset voltage after being connected with the thirty-third resistor in series, the second end of the second optical coupling solid-state relay is connected with the controller, the third end of the second optical coupling solid-state relay is connected with the thirty-fourth resistor in series and then connected with the input end of the second touch chip, the fourth end of the second optical coupling solid-state relay is connected with the output end of the low-frequency electrical stimulation device and the position between the second electrode plates, the output end of the second touch chip is connected with the controller, and the preset voltage is connected after being connected with the thirty-fifth resistor in series.
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| CN115671549A (en) * | 2022-11-09 | 2023-02-03 | 杭州神络医疗科技有限公司 | Low-power-consumption electrical stimulation method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115671549A (en) * | 2022-11-09 | 2023-02-03 | 杭州神络医疗科技有限公司 | Low-power-consumption electrical stimulation method and device |
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