CN215067917U - High-precision electrotherapy instrument circuit with constant-current source output - Google Patents
High-precision electrotherapy instrument circuit with constant-current source output Download PDFInfo
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Abstract
The circuit of the electro-therapeutic apparatus with high-precision constant-current source output comprises a main control module, a boosting module, a switch module, a patient impedance detection module, an adjustable load module, a voltage detection module, an electric quantity discharge module, a power supply module and a parameter setting module. The main control module comprises a first signal input end, a second signal input end, a third signal input end, a first signal output end, a second signal input end, a third signal input end and a fourth signal output end. The boost module includes a control terminal, a power input terminal, a first, a second and a third voltage output terminal. The switch module includes a control terminal, a voltage input terminal, and first and second voltage output terminals. The patient impedance detection module includes a signal input and an output. The adjustable load module comprises a control end, a voltage input end and a signal output end. The voltage detection module comprises a voltage input end, a signal input end and an output end. The electric quantity discharge module comprises a voltage input end and a signal input end. The electro-therapeutic apparatus solves the technical problems that the current electro-therapeutic apparatus circuit can not realize constant current source output and current adjustment, so that the electro-therapeutic effect is not ideal.
Description
Technical Field
The utility model relates to the field of electronic medical equipment, in particular to electrotherapy instrument circuit of high accuracy constant current source output.
Background
The electro-therapeutic apparatus uses AC current or pulse current with certain voltage and frequency, and is connected with human body by means of electrode to stimulate acupoints of human body so as to implement therapeutic and recovery. Because many components of human tissues have certain electrical characteristics, when pulse current passes through the affected part of a human body, muscles, nerves, body fluid and blood of the human body generate physicochemical reactions to a certain degree. The application range of the electro-therapeutic apparatus is as follows: for use in analgesia; improving local blood circulation and promoting inflammation dissipation; softening scar, and releasing adhesion, without any toxic and side effects. The electronic therapeutic apparatus is suitable for any health-preserving, health-care, beauty, rehabilitation and physiotherapy mechanism and the like, has the characteristics of no injection and no medicine taking, avoids iatrogenic and pharmacogenic infection, and is safer for many people, so the demand of the electronic therapeutic apparatus is continuously increased.
However, when using low-frequency and medium-frequency electronic therapeutic apparatuses for treatment, it is very important to know the appropriate and constant stimulation intensity. The stimulation intensity is low, and the treatment energy is insufficient; the stimulation intensity is high, and the mental stress and the vasoconstriction of the patient can influence the treatment effect.
However, the resistance of the human body is not a constant value, and different individuals are different, the same individual has different resistance in different environments, humidity conditions or different temperature environments, and the resistance of the positive and negative electrodes at different positions is different, so that even if a controllable voltage is applied to the human body, the constant current is not necessarily constant when the voltage is output to the human body, and the constant current is difficult to be ensured in each treatment, and the current stimulation intensity of a patient cannot be accurately controlled and adjusted with high precision.
In view of this, how to design an electrotherapy apparatus circuit capable of realizing high-precision constant current source output to human body and adjustable current is the subject of the present invention.
Disclosure of Invention
The utility model provides an electro-therapeutic apparatus circuit of high accuracy constant current source output, its purpose is to solve current electro-therapeutic apparatus circuit and can not realize constant current source output and electric current is adjustable, leads to the unsatisfactory technical problem of electrotherapy effect.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides an electro-therapeutic apparatus circuit of high accuracy constant current source output, electro-therapeutic apparatus circuit includes host system module, the module of stepping up, switch module, patient impedance detection module, adjustable load module, voltage detection module, electric quantity bleeder module, power module and parameter setting module.
The main control module comprises a first signal input end, a second signal input end, a third signal input end, a first signal output end, a second signal output end, a third signal output end and a fourth signal output end;
the boosting module comprises a control end, a power input end, a first voltage output end, a second voltage output end and a third voltage output end; the control end of the boosting module is connected with the first signal output end of the main control module; and the power input end of the boosting module is connected with one output end of the power module.
The switch module comprises a control end, a voltage input end, a first voltage output end and a second voltage output end; the control end of the switch module is connected with the second signal output end of the main control module; the voltage input end of the switch module is connected with the first voltage output end of the boosting module; the first voltage output of the switch module is connected to the patient.
The patient impedance detection module comprises a signal input end and a signal output end; the signal input end of the patient impedance detection module is connected with a patient; and the signal output end of the patient impedance detection module is connected with the first signal input end of the main control module.
The adjustable load module comprises a control end, a voltage input end and a signal output end; the control end of the adjustable load module is connected with the third signal output end of the main control module; and the voltage input end of the adjustable load module is connected with the second voltage output end of the switch module.
The voltage detection module comprises a voltage input end, a signal input end and a signal output end; the voltage input end of the voltage detection module is connected with the second voltage output end of the boosting module; the signal input end of the voltage detection module is connected with the signal output end of the adjustable load module; and the signal output end of the voltage detection module is connected with the second signal input end of the main control module.
The electric quantity discharge module comprises a voltage input end and a signal input end; the voltage input end of the electric quantity discharge module is connected with the third voltage output end of the boosting module; and the signal input end of the electric quantity discharge module is connected with the fourth signal output end of the main control module.
And the output end of the parameter setting module is connected with the third signal input end of the main control module.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, before the circuit of the electro-therapeutic apparatus works, the required current value is set through the parameter setting module, the setting is realized through key input or knob adjustment, the current value can be adjusted, and the current value can be displayed for a patient through a data display screen such as an LCD or an LED. The above is achieved by the prior art by those skilled in the art, and is not the innovative point of the present invention, so too much description is not given.
2. Among the above-mentioned scheme, the electro-therapeutic apparatus circuit during operation presets the current value and a experimental voltage value earlier, and voltage value is less, does not have the influence to the people, if about 3v, main control module control boost module steps up to the predetermined value, and main control module control switch module opens, transmits the electrotherapy wave to the patient, transmits patient impedance detection module through the patient again, detects out the current load size of patient, feeds back this signal to main control module again.
The main control module controls the switch module again, the electrotherapy waves are stopped being transmitted to the patient, the electrotherapy waves are transmitted to the adjustable load module, then the electrotherapy waves are transmitted to the voltage detection module for detection, and then the electrotherapy waves are fed back to the main control module, and the load of the adjustable load module is controlled by the main control module to be consistent with that of the patient.
The main control module calculates a current value according to a preset voltage value and a current load, compares the current value with a preset current value, and controls the switch module to be switched on to transmit electrotherapy waves to a patient when the preset current value is reached; if the current value does not reach the preset current value, the main control module controls the boosting module to continue boosting; if the current value exceeds the preset current value or the electric quantity remains after the output once, the main control module controls the electric quantity discharge module to be opened, and the residual electric quantity is discharged.
Therefore, constant current output is realized, and the current can be regulated by regulating the current preset value.
3. In the above scheme, the power input end of the boost module is connected with one output end of the power module; the voltage input end of the switch module is connected with the first voltage output end of the boosting module; the first voltage output of the switch module is connected to the patient. Through above-mentioned transmission mode, the power provides initial voltage for the power supply of the module that steps up, and the module that steps up and forms the electrotherapy ripples, transmits to the patient on one's body through switch module again, can adopt electrically conductive objects such as electrode slice, metal clip to be connected with patient's electricity conduction.
4. In the above scheme, the signal input end of the patient impedance detection module is connected with the patient; and the signal output end of the patient impedance detection module is connected with the first signal input end of the main control module. Through the transmission mode, electrotherapy waves are transmitted to the patient impedance detection module through the patient, the current load of the patient is detected, and the signal is fed back to the main control module. Conducting objects such as hydrogel electrode plates and metal clips can be adopted to be in conducting connection with patients to transmit signals.
5. In the above scheme, the control end of the adjustable load module is connected with the third signal output end of the main control module; the voltage input end of the adjustable load module is connected with the second voltage output end of the switch module; the control end of the adjustable load module is connected with the third signal output end of the main control module; the voltage input end of the adjustable load module is connected with the second voltage output end of the switch module; and the signal output end of the voltage detection module is connected with the second signal input end of the main control module. Through the transmission mode, electrotherapy waves are transmitted to the adjustable load module, then transmitted to the voltage detection module for detection, and fed back to the main control module, and the main control module controls the load of the adjustable load module to be consistent with that of a patient.
6. In the above scheme, the voltage input end of the electric quantity discharging module is connected with the third voltage output end of the boosting module; and the signal input end of the electric quantity discharge module is connected with the fourth signal output end of the main control module. Through the mode, when the current value exceeds the preset value or after the current value is output once, the electric quantity is remained, the main control module controls the boosting module to transmit the electric quantity to the electric quantity discharging module, and the main control module controls the electric quantity discharging module to start working and discharging.
7. In the above scheme, the main control module includes a timing chip and a single chip microcomputer U3. The type of the timing chip is SG5032CAN, and the frequency stability is 50 ppm; and an output pin of the timing chip is connected to a main frequency input pin of the main control module. The model of the single chip microcomputer U3 is G80F 935; the single-chip microcomputer U3 is provided with pins 1 to 64, a pin 25 of the single-chip microcomputer U3 serves as a first signal input end of the main control module, a pin 24 of the single-chip microcomputer U3 serves as a second signal input end of the main control module, a pin 32 of the single-chip microcomputer U3 serves as a third signal input end of the main control module, a pin 57 of the single-chip microcomputer U3 serves as a first signal output end of the main control module, a pin 47 and a pin 48 of the single-chip microcomputer U3 serve as a second signal output end of the main control module together, a pin 61 and a pin 62 of the single-chip microcomputer U3 serve as a third signal output end of the main control module together, and a pin 37 of the single-chip microcomputer U3 serves as a fourth signal output end of the main control module.
8. In the above scheme, the boost module includes a first capacitor C201, a diode D301, an inductor L501, a seventh triode Q402, a first resistor R104, and a second resistor R103; the anode of the first capacitor C201 is connected with a diode D301, and the cathode of the first capacitor C is grounded; an end point 1 is arranged on a line between the first capacitor C201 and the diode D301, and the end point 1 is simultaneously used as a first voltage output end, a second voltage output end and a third voltage output end of the boosting module; one end of the inductor L501 is connected with the diode D301, and the other end of the inductor L is used as a power input end of the boosting module and is connected with a power supply VCC; one end of the first resistor R104 is connected to a line between the diode D301 and the inductor L501, the other end of the first resistor R is connected to a collector of a seventh triode Q402, and an emitter of the seventh triode Q402 is grounded; one end of the second resistor R103 is connected with the base of the seventh triode Q402, and the other end of the second resistor R is used as the control end of the boost module.
9. In the above scheme, the switch module includes a first triode Q101, a second triode Q102, a third triode Q103, a fourth triode Q104, a fifth triode Q105, a sixth triode Q106, a third resistor R501, a fourth resistor R502, a fifth resistor R503 and a sixth resistor R504; the bases of the fifth triode Q105 and the sixth triode Q106 are jointly used as the control end of the switch module; one end of the third resistor R501 is connected with the collector of the fifth triode Q105, and the other end of the third resistor R is connected with the base of the first triode Q101; one end of the fourth resistor R502 is connected with the collector of the fifth triode Q105, and the other end is connected with the base of the second triode Q102; the collector of the first triode Q101 and the emitter of the second triode Q102 are jointly used as a first voltage output end of the switch module to be connected with a patient; one end of the fifth resistor R503 is connected with the collector of the sixth triode Q106, and the other end is connected with the base of the third triode Q103; one end of the sixth resistor R504 is connected with the collector of the sixth triode Q106, and the other end of the sixth resistor R is connected with the base of the fourth triode Q104; an emitter of the third triode Q103 and a collector of the fourth triode Q104 are used together as a second voltage output end of the switch module; the emitting electrodes of the first triode Q101 and the fourth triode Q104 are used as the voltage input end of the switch module together; the emitters of the fifth triode Q105 and the sixth triode Q106, and the collectors of the second triode Q102 and the third triode Q103 are all grounded.
10. In the above scheme, the voltage detection module includes an ADC detection module, one end of the ADC detection module is used as a voltage input end of the voltage detection module, and meanwhile, the other end of the ADC detection module is used as a signal input end of the voltage detection module, and the other end of the ADC detection module is used as a signal output end of the voltage detection module.
11. In the above scheme, the patient impedance detection module includes a second capacitor C101 and a seventh resistor R505, one end of the seventh resistor R505 is used as a signal input end of the patient impedance detection module and connected to the patient, the other end of the seventh resistor R505 is connected to the second capacitor C101, a line between the seventh resistor R505 and the second capacitor C101 is provided with an endpoint 2, and the endpoint 2 is used as a signal output end of the patient impedance detection module; the other terminal of the second capacitor C101 is grounded.
12. In the above scheme, the adjustable load module includes an adjustable resistor and a control chip, and an SCL pin and an SDA pin of the control chip are jointly used as a control end of the adjustable load module; and the pin H of the control chip is used as a voltage input end of the adjustable load module, and the pin W of the control chip is used as a signal output end of the adjustable load module.
13. In the above scheme, the electric quantity bleeding module includes an eighth triode Q201 and an eighth resistor R201, one end of the eighth resistor R201 is used as the voltage input end of the electric quantity bleeding module, the other end is connected with the collector of the eighth triode Q201, the base of the eighth triode Q201 is used as the signal input end of the electric quantity bleeding module, and the emitter of the eighth triode Q201 is grounded.
The utility model discloses the theory of operation is: before the circuit of the electro-therapeutic apparatus works, a required current value and a required test voltage value are set through a parameter setting module. When the circuit of the electro-therapeutic apparatus works, the main control module controls the boosting module to boost to a preset value, the main control module controls the switch module to be switched on, electrotherapy waves are transmitted to a patient, then the electrotherapy waves are transmitted to the patient impedance detection module through the patient, the current load of the patient is detected out, and the signal is fed back to the main control module. The main control module controls the switch module to transmit the voltage to the adjustable load module, then transmits the voltage to the voltage detection module for detection, and then feeds the voltage back to the main control module, and the main control module controls the load of the adjustable load module to be consistent with that of the patient. The main control module calculates a current value according to a preset voltage value and a current load, compares the current value with a preset current value, and controls the switch module to be switched on to transmit electrotherapy waves to a patient when the preset current value is reached; if the current value does not reach the preset current value, the main control module controls the boosting module to continue boosting; if the current value exceeds the preset current value or the electric quantity remains after the output once, the main control module controls the electric quantity discharge module to be opened, and the residual electric quantity is discharged. Therefore, constant current output is realized, and the current can be regulated by regulating the current preset value.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. because the utility model discloses a patient impedance detection module survey patient's load to adopt adjustable load module to simulate out patient's load, survey out current value, readjust voltage reaches the constant current and exports the patient, realizes basically unchangeable to patient's stimulation, improves the electrotherapy effect, and the circuit is simple, and easy to carry out adopts the reducible adjustment current in-process of adjustable load module to patient's influence.
2. Because the utility model discloses a current value of adjustment reservation can realize adjusting stimulation intensity, can adjust the reservation current value according to different individualities, different positions, different states, improves the electrotherapy effect, adjusts convenient nimble.
Drawings
FIG. 1 is a block diagram of the overall structure of the embodiment of the present invention;
fig. 2 is a working circuit diagram of the boost module according to the embodiment of the present invention;
fig. 3 is a working circuit diagram of a switch module according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of the patient impedance detection module according to the embodiment of the present invention;
fig. 5 is a chip schematic diagram of an adjustable load module according to an embodiment of the present invention;
FIG. 6 is a circuit diagram of the voltage detection module according to the embodiment of the present invention;
fig. 7 is a working circuit diagram of the electric quantity discharging module according to the embodiment of the present invention;
fig. 8 is a working circuit diagram of the single chip microcomputer according to the embodiment of the present invention.
In the above drawings: c201 and a first capacitor; c101 and a second capacitor; d301, a diode; l501, inductance; r104 and a first resistor; r103 and a second resistor; r501 and a third resistor; r502 and a fourth resistor; r503 and a fifth resistor; r504 and a sixth resistor; r505 and a seventh resistor; r201 and an eighth resistor; q101 and a first triode; q102 and a second triode; q103, a third triode; q104 and a fourth triode; q105 and a fifth triode; q106 and a sixth triode; q402, seventh triode; q201 and an eighth triode; VCC, power supply.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): high-precision electrotherapy instrument circuit with constant-current source output
Referring to fig. 1, the circuit of the electro-therapeutic apparatus includes a main control module, a voltage boosting module, a switch module, a patient impedance detection module, an adjustable load module, a voltage detection module, an electric quantity discharge module, a power supply module, and a parameter setting module.
Referring to fig. 8, the main control module includes a first signal input terminal, a second signal input terminal, a third signal input terminal, a first signal output terminal, a second signal output terminal, a third signal output terminal, and a fourth signal output terminal. The main control module comprises a timing chip and a single chip microcomputer U3. The type of the timing chip is SG5032CAN, and the frequency stability is 50 ppm; and an output pin of the timing chip is connected to a main frequency input pin of the main control module. The model of the single chip microcomputer U3 is G80F 935; the single-chip microcomputer U3 is provided with pins 1 to 64, a pin 25 of the single-chip microcomputer U3 serves as a first signal input end of the main control module, a pin 24 of the single-chip microcomputer U3 serves as a second signal input end of the main control module, a pin 32 of the single-chip microcomputer U3 serves as a third signal input end of the main control module, a pin 57 of the single-chip microcomputer U3 serves as a first signal output end of the main control module, a pin 47 and a pin 48 of the single-chip microcomputer U3 serve as a second signal output end of the main control module together, a pin 61 and a pin 62 of the single-chip microcomputer U3 serve as a third signal output end of the main control module together, and a pin 37 of the single-chip microcomputer U3 serves as a fourth signal output end of the main control module.
Referring to fig. 2, the boost module includes a control terminal, a power input terminal, a first voltage output terminal, a second voltage output terminal, and a third voltage output terminal; the control end of the boosting module is connected with the first signal output end of the main control module; and the power input end of the boosting module is connected with one output end of the power module. The boosting module comprises a first capacitor C201, a diode D301, an inductor L501, a seventh triode Q402, a first resistor R104 and a second resistor R103; the anode of the first capacitor C201 is connected with a diode D301, and the cathode of the first capacitor C is grounded; an end point 1 is arranged on a line between the first capacitor C201 and the diode D301, and the end point 1 is simultaneously used as a first voltage output end, a second voltage output end and a third voltage output end of the boosting module; one end of the inductor L501 is connected with the diode D301, and the other end of the inductor L is used as a power input end of the boosting module and is connected with a power supply VCC; one end of the first resistor R104 is connected to a line between the diode D301 and the inductor L501, the other end of the first resistor R is connected to a collector of a seventh triode Q402, and an emitter of the seventh triode Q402 is grounded; one end of the second resistor R103 is connected with the base of the seventh triode Q402, and the other end of the second resistor R is used as the control end of the boost module.
Referring to fig. 3, the switch module includes a control terminal, a voltage input terminal, a first voltage output terminal and a second voltage output terminal; the control end of the switch module is connected with the second signal output end of the main control module; the voltage input end of the switch module is connected with the first voltage output end of the boosting module; the first voltage output of the switch module is connected to the patient. The switch module comprises a first triode Q101, a second triode Q102, a third triode Q103, a fourth triode Q104, a fifth triode Q105, a sixth triode Q106, a third resistor R501, a fourth resistor R502, a fifth resistor R503 and a sixth resistor R504; the bases of the fifth triode Q105 and the sixth triode Q106 are jointly used as the control end of the switch module, the base of the fifth triode Q105 is connected with the pin 47 of the singlechip U3, and the base of the sixth triode Q106 is connected with the pin 48 of the singlechip U3; one end of the third resistor R501 is connected with the collector of the fifth triode Q105, and the other end of the third resistor R is connected with the base of the first triode Q101; one end of the fourth resistor R502 is connected with the collector of the fifth triode Q105, and the other end is connected with the base of the second triode Q102; the collector of the first triode Q101 and the emitter of the second triode Q102 are jointly used as a first voltage output end of the switch module to be connected with a patient; one end of the fifth resistor R503 is connected with the collector of the sixth triode Q106, and the other end is connected with the base of the third triode Q103; one end of the sixth resistor R504 is connected with the collector of the sixth triode Q106, and the other end of the sixth resistor R is connected with the base of the fourth triode Q104; an emitter of the third triode Q103 and a collector of the fourth triode Q104 are used together as a second voltage output end of the switch module; the emitting electrodes of the first triode Q101 and the fourth triode Q104 are used as the voltage input end of the switch module to be connected with the end point 1; the emitters of the fifth triode Q105 and the sixth triode Q106, and the collectors of the second triode Q102 and the third triode Q103 are all grounded.
Referring to fig. 4, the patient impedance detection module includes a signal input and a signal output; the signal input end of the patient impedance detection module is connected with a patient; and the signal output end of the patient impedance detection module is connected with the first signal input end of the main control module. The patient impedance detection module comprises a second capacitor C101 and a seventh resistor R505, one end of the seventh resistor R505 is used as a signal input end of the patient impedance detection module and connected with a patient, the other end of the seventh resistor R505 is connected with the second capacitor C101, an end point 2 is arranged on a line between the seventh resistor R505 and the second capacitor C101, and the end point 2 is used as a signal output end of the patient impedance detection module; the other terminal of the second capacitor C101 is grounded.
Referring to fig. 5, the adjustable load module includes a control terminal, a voltage input terminal and a signal output terminal; the control end of the adjustable load module is connected with the third signal output end of the main control module; and the voltage input end of the adjustable load module is connected with the second voltage output end of the switch module. The adjustable load module comprises an adjustable resistor and a control chip, an SCL pin and an SDA pin of the control chip are jointly used as a control end of the adjustable load module, the SCL pin of the control chip is connected with a pin 61 of a single chip microcomputer U3, and the SDA pin of the control chip is connected with a pin 62 of a single chip microcomputer U3; and the pin H of the control chip is used as a voltage input end of the adjustable load module, and the pin W of the control chip is used as a signal output end of the adjustable load module.
Referring to fig. 6, the voltage detection module includes a voltage input terminal, a signal input terminal and a signal output terminal; the voltage input end of the voltage detection module is connected with the second voltage output end of the boosting module; the signal input end of the voltage detection module is connected with the signal output end of the adjustable load module; and the signal output end of the voltage detection module is connected with the second signal input end of the main control module. The voltage detection module comprises an ADC detection module, one end of the ADC detection module is used as a voltage input end of the voltage detection module and is connected with the end point 1, meanwhile, the end is used as a signal input end of the voltage detection module, and the other end of the ADC detection module is used as a signal output end of the voltage detection module.
Referring to fig. 7, the power bleeding module includes a voltage input terminal and a signal input terminal; the voltage input end of the electric quantity discharge module is connected with the third voltage output end of the boosting module; and the signal input end of the electric quantity discharge module is connected with the fourth signal output end of the main control module. The electric quantity bleeder module includes eighth triode Q201 and eighth resistance R201, the one end of eighth resistance R201 is as the voltage input end connection terminal point 1 of electric quantity bleeder module, and the collecting electrode of eighth triode Q201 is connected to the other end, the base of eighth triode Q201 is as the signal input part of electric quantity bleeder module, the projecting pole ground connection of eighth triode Q201.
And the output end of the parameter setting module is connected with the third signal input end of the main control module.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides an electro-therapeutic apparatus circuit of high accuracy constant current source output which characterized in that: the circuit of the electro-therapeutic apparatus comprises a main control module, a boosting module, a switch module, a patient impedance detection module, an adjustable load module, a voltage detection module, an electric quantity discharge module, a power supply module and a parameter setting module;
the main control module comprises a first signal input end, a second signal input end, a third signal input end, a first signal output end, a second signal output end, a third signal output end and a fourth signal output end;
the boosting module comprises a control end, a power input end, a first voltage output end, a second voltage output end and a third voltage output end; the control end of the boosting module is connected with the first signal output end of the main control module; the power input end of the boosting module is connected with one output end of the power module;
the switch module comprises a control end, a voltage input end, a first voltage output end and a second voltage output end; the control end of the switch module is connected with the second signal output end of the main control module; the voltage input end of the switch module is connected with the first voltage output end of the boosting module; the first voltage output end of the switch module is connected with a patient;
the patient impedance detection module comprises a signal input end and a signal output end; the signal input end of the patient impedance detection module is connected with a patient; the signal output end of the patient impedance detection module is connected with the first signal input end of the main control module;
the adjustable load module comprises a control end, a voltage input end and a signal output end; the control end of the adjustable load module is connected with the third signal output end of the main control module; the voltage input end of the adjustable load module is connected with the second voltage output end of the switch module;
the voltage detection module comprises a voltage input end, a signal input end and a signal output end; the voltage input end of the voltage detection module is connected with the second voltage output end of the boosting module; the signal input end of the voltage detection module is connected with the signal output end of the adjustable load module; the signal output end of the voltage detection module is connected with the second signal input end of the main control module;
the electric quantity discharge module comprises a voltage input end and a signal input end; the voltage input end of the electric quantity discharge module is connected with the third voltage output end of the boosting module; the signal input end of the electric quantity discharge module is connected with the fourth signal output end of the main control module;
and the output end of the parameter setting module is connected with the third signal input end of the main control module.
2. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the main control module comprises a timing chip and a single chip microcomputer (U3).
3. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 2, characterized in that: the type of the timing chip is SG5032CAN, and the frequency stability is 50 ppm; and an output pin of the timing chip is connected to a main frequency input pin of the main control module.
4. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 2, characterized in that: the type of the single chip microcomputer (U3) is G80F 935; the single-chip microcomputer (U3) is provided with pins 1 to 64, a pin 25 of the single-chip microcomputer (U3) serves as a first signal input end of the main control module, a pin 24 of the single-chip microcomputer (U3) serves as a second signal input end of the main control module, a pin 32 of the single-chip microcomputer (U3) serves as a third signal input end of the main control module, a pin 57 of the single-chip microcomputer (U3) serves as a first signal output end of the main control module, a pin 47 and a pin 48 of the single-chip microcomputer (U3) serve as a second signal output end of the main control module together, a pin 61 and a pin 62 of the single-chip microcomputer (U3) serve as a third signal output end of the main control module together, and a pin 37 of the single-chip microcomputer (U3) serves as a fourth signal output end of the main control module.
5. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the boosting module comprises a first capacitor (C201), a diode (D301), an inductor (L501), a seventh triode (Q402), a first resistor (R104) and a second resistor (R103); the anode of the first capacitor (C201) is connected with a diode (D301), and the cathode of the first capacitor is grounded; a terminal 1 is arranged on a line between the first capacitor (C201) and the diode (D301), and the terminal 1 is simultaneously used as a first voltage output terminal, a second voltage output terminal and a third voltage output terminal of the boosting module; one end of the inductor (L501) is connected with the diode (D301), and the other end of the inductor is used as a power input end of the boosting module and is connected with a power supply (VCC); one end of the first resistor (R104) is connected with a line between the diode (D301) and the inductor (L501), the other end of the first resistor is connected with a collector of a seventh triode (Q402), and an emitter of the seventh triode (Q402) is grounded; one end of the second resistor (R103) is connected with the base electrode of the seventh triode (Q402), and the other end of the second resistor is used as the control end of the boosting module.
6. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the switch module comprises a first triode (Q101), a second triode (Q102), a third triode (Q103), a fourth triode (Q104), a fifth triode (Q105), a sixth triode (Q106), a third resistor (R501), a fourth resistor (R502), a fifth resistor (R503) and a sixth resistor (R504); the bases of the fifth triode (Q105) and the sixth triode (Q106) are jointly used as the control end of the switch module; one end of the third resistor (R501) is connected with the collector of the fifth triode (Q105), and the other end of the third resistor is connected with the base of the first triode (Q101); one end of the fourth resistor (R502) is connected with the collector of the fifth triode (Q105), and the other end of the fourth resistor (R502) is connected with the base of the second triode (Q102); the collector electrode of the first triode (Q101) and the emitter electrode of the second triode (Q102) are jointly used as a first voltage output end of the switch module to be connected with a patient; one end of the fifth resistor (R503) is connected with the collector of the sixth triode (Q106), and the other end of the fifth resistor is connected with the base of the third triode (Q103); one end of the sixth resistor (R504) is connected with the collector of the sixth triode (Q106), and the other end of the sixth resistor (R504) is connected with the base of the fourth triode (Q104); an emitter of the third triode (Q103) and a collector of the fourth triode (Q104) are jointly used as a second voltage output end of the switch module; the emitting electrodes of the first triode (Q101) and the fourth triode (Q104) are used as the voltage input end of the switch module together; the emitting electrodes of the fifth triode (Q105) and the sixth triode (Q106) and the collecting electrodes of the second triode (Q102) and the third triode (Q103) are all grounded.
7. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the voltage detection module comprises an ADC detection module, one end of the ADC detection module is used as a voltage input end of the voltage detection module, the end is used as a signal input end of the voltage detection module, and the other end of the ADC detection module is used as a signal output end of the voltage detection module.
8. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the patient impedance detection module comprises a second capacitor (C101) and a seventh resistor (R505), one end of the seventh resistor (R505) is used as a signal input end of the patient impedance detection module and connected with a patient, the other end of the seventh resistor (R505) is connected with the second capacitor (C101), an endpoint 2 is arranged on a line between the seventh resistor (R505) and the second capacitor (C101), and the endpoint 2 is used as a signal output end of the patient impedance detection module; the other end of the second capacitor (C101) is grounded.
9. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the adjustable load module comprises an adjustable resistor and a control chip, wherein an SCL pin and an SDA pin of the control chip are jointly used as a control end of the adjustable load module; and the pin H of the control chip is used as a voltage input end of the adjustable load module, and the pin W of the control chip is used as a signal output end of the adjustable load module.
10. The electro-therapeutic apparatus circuit of high precision constant current source output according to claim 1, characterized in that: the electric quantity bleeder module comprises an eighth triode (Q201) and an eighth resistor (R201), one end of the eighth resistor (R201) is used as a voltage input end of the electric quantity bleeder module, the other end of the eighth resistor (R201) is connected with a collector electrode of the eighth triode (Q201), a base electrode of the eighth triode (Q201) is used as a signal input end of the electric quantity bleeder module, and an emitter electrode of the eighth triode (Q201) is grounded.
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|---|---|---|---|
| CN202121185690.4U CN215067917U (en) | 2021-05-31 | 2021-05-31 | High-precision electrotherapy instrument circuit with constant-current source output |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185690.4U CN215067917U (en) | 2021-05-31 | 2021-05-31 | High-precision electrotherapy instrument circuit with constant-current source output |
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