CN110681048B - Brain reflex therapeutic instrument - Google Patents
Brain reflex therapeutic instrument Download PDFInfo
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- CN110681048B CN110681048B CN201910856980.8A CN201910856980A CN110681048B CN 110681048 B CN110681048 B CN 110681048B CN 201910856980 A CN201910856980 A CN 201910856980A CN 110681048 B CN110681048 B CN 110681048B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/36025—External stimulators, e.g. with patch electrodes for treating a mental or cerebral condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
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Abstract
The invention discloses a brain reflex therapeutic apparatus, which comprises a control terminal, a constant current source circuit, a transformer T1A, a switching tube Q2 and a PWM signal source; under the control of the control terminal, the output of the constant current source is connected with the D pole of the switching tube Q2 through the primary coil of the transformer T1A, the S pole of the switching tube Q2 is grounded, and the G pole of the switching tube Q2 is controlled by the output end of the PWM signal source of the control terminal; the control circuit comprises a digital key on a panel, a DA conversion circuit for DA converting data input by the digital key, an amplifying circuit for amplifying an analog signal which is output by the DA conversion circuit and reflects the data, and the output of the amplifying circuit controls the output amplitude of the constant current source. In the invention, because the digital signal can be directly input to realize the output amplitude control of the constant current source, the output amplitude of the constant current source only needs to be input according to the requirement of a doctor, and the operation can be carried out without a professional worker.
Description
Technical Field
The invention relates to a brain reflex therapeutic apparatus.
Background
The applicant is known through long-term research that the special electrical stimulation is matched with a conductive medium, and the special electrical stimulation acts on the supraorbital branch of the trigeminal nerve after electrification to trigger a generalized brain reflex effect in a brain stem reflex pathway to adjust the abnormal plasticity of the nerve pathway, so that the dysfunction and mental disorder of the related nervous system are improved, and the treatment effect is achieved. Therefore, the brain reflex therapeutic apparatus is designed, the signal generator is adopted to generate the PWM signal with proper frequency and duty ratio, different patients are treated by adjusting the amplitude of the PWM signal, the patients are assisted to condition the body, the fatigue is relieved, the brain overdraft is relieved, the immunity is improved, the resistance is improved, and the sub-health is eliminated! At present, the frequency, the duty ratio and the amplitude of a pulse signal generated by the cerebral reflex therapeutic apparatus are determined by a doctor according to the state of a patient, the frequency and the duty ratio can be determined by selecting different PWM signal sources, but the amplitude of the pulse signal is adjusted by using an adjusting knob, the amplitude of the output pulse signal is increased when the clock is reversely rotated, the amplitude of the output pulse signal is reduced when the clock is reversely rotated, and an experienced operator is required to operate the instrument, so that the proper amplitude of the pulse signal can be output.
Disclosure of Invention
The invention provides a brain reflex therapeutic apparatus which determines the amplitude of an output pulse signal by using an input number aiming at the defect that the amplitude of the pulse signal is adjusted by a rotary knob and an experienced operator is required by the existing brain reflex therapeutic apparatus.
The technical scheme adopted by the invention for realizing the technical purpose is as follows: a brain reflex therapeutic apparatus comprises a control terminal, a constant current source circuit, a transformer T1A, a switch tube Q2 and a PWM signal source; under the control of the control terminal, the output of the constant current source is connected with the D pole of the switching tube Q2 through the primary coil of the transformer T1A, the S pole of the switching tube Q2 is grounded, and the G pole of the switching tube Q2 is controlled by the output end of the PWM signal source of the control terminal; the control circuit comprises a digital key on a panel, a DA conversion circuit for DA converting data input by the digital key, an amplifying circuit for amplifying an analog signal which is output by the DA conversion circuit and reflects the data, and the output of the amplifying circuit controls the output amplitude of the constant current source.
In the invention, because the digital signal can be directly input to realize the output amplitude control of the constant current source, the output amplitude of the constant current source only needs to be input according to the requirement of a doctor, and the operation can be carried out without a professional worker.
Further, in the above cerebral reflex treatment apparatus: the DA conversion circuit comprises a digital-to-analog conversion chip U4 with the model number of AD7520JN, a digital input interface for accessing data input from a digital keyboard into the digital-to-analog conversion chip U4 through a data bus, an analog signal output end is connected with the input end of the amplifying circuit, a reference voltage input end of the digital-to-analog conversion chip U4 inputs-9.2V reference voltage, and a feedback input interface is connected with the output end of the amplifying circuit.
Further, in the above cerebral reflex treatment apparatus: the amplifying circuit comprises a precision operational amplifier U1A with the model number of OP07CP, the analog signal output end of a digital-to-analog conversion chip U4 is connected with the inverting input end of the precision operational amplifier U1A, the non-inverting input end of the precision operational amplifier U1A is grounded through a resistor R9, and the non-inverting input end of the precision operational amplifier U1A is connected with the analog-to-digital control end of a control terminal through a resistor R10; the resistor R12 is arranged between the inverting input end and the output end of the precision operational amplifier U1A, and the precision operational amplifier U1A forms an amplified output signal and is connected with the feedback input end of the digital-to-analog conversion chip U4.
Further, in the above brain reflex therapy apparatus: the constant current source circuit comprises a precision operational amplifier U2A, a Darlington triode Q1, a resistor R4 and a diode D2; the output end of the amplifying circuit is connected with the non-inverting input end of the precision operational amplifier U2A, the output end of the precision operational amplifier U2A is connected with the base electrode of the Darlington transistor Q1 through a resistor R4, the collector electrode of the Darlington transistor Q1 is connected with a 12V working power supply, the emitter electrode of the Darlington transistor Q1 forms constant current output, the diode D2 is arranged between the base electrode of the Darlington transistor Q1 and the ground, and the cathode of the diode D2 is grounded; the inverting input end of the precision operational amplifier U2A is connected to the emitter of the Linton triode Q1 through a resistor R6.
Further, in the above cerebral reflex treatment apparatus: the amplitude side of the transformer T1A comprises a first secondary side coil and a second secondary side coil which are the same, and a resistor R1, a resistor R2, a common-mode inductor L1A and a common-mode inductor L2A are arranged on the amplitude side of the transformer T1A;
two ends of the first secondary coil are respectively connected with two ends of a resistor R1 and the 1 st and 4 th pins of a common-mode inductor L1A, and the 2 nd and 3 rd pins of the common-mode inductor L1A form a first pair of treatment electrodes;
two ends of the second secondary coil are respectively connected with two ends of a resistor R2 and the 1 st pin and the 4 th pin of a common mode inductor L2A, and the 2 rd pin and the 3 rd pin of the common mode inductor L2A form a second pair of treatment electrodes.
Further, in the above brain reflex therapy apparatus: the PWM signal source output end of the control terminal is also provided with a driving circuit of a switching tube Q2, and the driving circuit comprises a triode Q3, a resistor R7, a resistor R8, a capacitor C23 and a capacitor C22;
the output end of the PWM signal source of the control terminal is connected with the base electrode of the triode Q3 through a parallel circuit consisting of a resistor R8 and a capacitor C23, a 12V working power supply is connected with the collector electrode of the triode Q3 through a resistor R7, the emitter electrode of the triode Q3 is grounded, and the capacitor C22 is arranged between the 12V working power supply and the ground.
Further, in the above cerebral reflex treatment apparatus: and diodes D1 are also arranged at two ends of the source side of the transformer T1A, and the anode of the diode D1 is connected with the negative end of the source side of the transformer T1A.
Further, in the above brain reflex therapy apparatus: when the output end of the constant current source circuit is input into the transformer T1A, the output end of the constant current source circuit passes through a filter circuit, and the filter circuit comprises an electrolytic capacitor C21 and a resistor R3; the electrolytic capacitor C21 and the resistor R3 are both arranged between the output end of the constant current source circuit and the ground, and the cathode of the electrolytic capacitor C21 is grounded.
The invention is further described with reference to the following figures and detailed description.
Drawings
Fig. 1 is an overall schematic diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a DA and an amplifier circuit according to embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of a constant current source circuit according to embodiment 1 of the present invention.
Detailed Description
Embodiment 1 this embodiment is a brain reflex therapy apparatus which can control the pulse amplitude output from electrodes by inputting specific data, and can be operated by a patient himself or herself according to a doctor's prescription without the need of a trained worker. As shown in fig. 1: the brain reflex therapeutic apparatus in the embodiment inputs the amplitude of a required pulse signal through the digital keyboard under the control of the control terminal, controls the amplitude of the pulse signal added to a human body, and simultaneously, the control terminal also generates a PWM control signal for controlling the frequency and the duty ratio of the pulse signal, for example, the frequency of the PWM signal is 218KHz, and the duty ratio of the PWM signal is 0.6%, so that a pulse signal with determined amplitude can be generated between the two poles, the frequency is 218KHz, and the duty ratio of the pulse signal is 0.6%, and the pulse signal can effectively treat a patient. The device comprises a control terminal, a constant current source circuit, a transformer T1A, a switching tube Q2 and a PWM signal source; under the control of the control terminal, the output of the constant current source is connected with the D pole of the switching tube Q2 through the primary coil of the transformer T1A, the S pole of the switching tube Q2 is grounded, and the G pole of the switching tube Q2 is controlled by the output end of the PWM signal source of the control terminal; the control circuit comprises a digital key on a panel, a DA conversion circuit for DA converting data input by the digital key, an amplification circuit for amplifying an analog signal which is output by the DA conversion circuit and reflects the data, and the output of the amplification circuit controls the output amplitude of the constant current source. In the specific circuit: the PWM signal source output end of the control terminal is also provided with a driving circuit of a switch tube Q2, and the driving circuit comprises a triode Q3, a resistor R7, a resistor R8, a capacitor C23 and a capacitor C22; the output end of a PWM signal source of the control terminal is connected with the base electrode of the triode Q3 through a parallel circuit consisting of a resistor R8 and a capacitor C23, a 12V working power supply is connected with the collector electrode of the triode Q3 and the emitter electrode of the triode Q3 through a resistor R7 and is grounded, and a capacitor C22 is arranged between the 12V working power supply and the ground.
The amplitude side of the transformer T1A comprises a first secondary side coil and a second secondary side coil which are the same, a resistor R1, a resistor R2, a common-mode inductor L1A and a common-mode inductor L2A; two ends of the first secondary coil are respectively connected with two ends of a resistor R1 and the 1 st and 4 th pins of a common mode inductor L1A, and the 2 nd and 3 rd pins of the common mode inductor L1A form a first pair of treatment electrodes; two ends of the second secondary coil are respectively connected with two ends of a resistor R2 and the 1 st pin and the 4 th pin of a common mode inductor L2A, and the 2 rd pin and the 3 rd pin of the common mode inductor L2A form a second pair of treatment electrodes. The resistor R1 and the resistor R2, and the common mode inductor L1A and the common mode inductor L2A are used as adaptation circuits for resistor (probe) output, and the value of the resistor is relatively large and is more than 100K.
And diodes D1 are also arranged at two ends of the source side of the transformer T1A, and the anode of the diode D1 is connected with the negative end of the source side of the transformer T1A. In practice, the load capacity of the power supply is relatively large, and a plurality of pairs of electrodes can be arranged on the secondary side of the transformer T1A, and treatment can be performed on a plurality of patients.
When the output end of the constant current source circuit is input into the transformer T1A, the output end of the constant current source circuit passes through a filter circuit, and the filter circuit comprises an electrolytic capacitor C21 and a resistor R3; the electrolytic capacitor C21 and the resistor R3 are both provided between the output terminal of the constant current source circuit and the ground, and the cathode of the electrolytic capacitor C21 is grounded.
As shown in fig. 2, the DA conversion circuit includes a digital-to-analog conversion chip U4 with model number AD7520JN, a digital input interface for accessing data input from a numeric keyboard to the digital-to-analog conversion chip U4 through a data bus, an analog signal output terminal connected to an input terminal of the amplification circuit, a reference voltage input terminal of the digital-to-analog conversion chip U4 inputting a-9.2V reference voltage, and a feedback input interface connected to an output terminal of the amplification circuit. On the bus of the control terminal, the data bus is connected with a data input pin of the digital-to-analog conversion chip U4, and other control ends are respectively connected with the control bus of a control signal provided by the control terminal for the DA chip.
The amplifying circuit comprises a precision operational amplifier U1A with the model number of OP07CP, the analog signal output end of a digital-to-analog conversion chip U4 is connected with the inverting input end of the precision operational amplifier U1A, the non-inverting input end of the precision operational amplifier U1A is grounded through a resistor R9, and the non-inverting input end of the precision operational amplifier U1A is connected with the analog-to-digital control end of a control terminal through a resistor R10; the resistor R12 is arranged between the inverting input end and the output end of the precision operational amplifier U1A, and the precision operational amplifier U1A forms an amplified output signal which is connected with the feedback input end of the digital-to-analog conversion chip U4. This is an inverting amplifier, which is intended to amplify the signal of the analog output of the DA chip.
As shown in fig. 3, the constant current source circuit includes a precision operational amplifier U2A, a darlington transistor Q1, a resistor R4, and a diode D2; the output end of the amplifying circuit is connected with the non-inverting input end of the precision operational amplifier U2A, the output end of the precision operational amplifier U2A is connected to the base electrode of the Darlington triode Q1 through the resistor R4, the collector electrode of the Darlington triode Q1 is connected with a 12V working power supply, the emitting electrode of the Darlington triode Q1 forms constant current output, the diode D2 is arranged between the base electrode of the Darlington triode Q1 and the ground, and the cathode of the diode D2 is grounded; the inverting input end of the precision operational amplifier U2A is connected to the emitter of the Linton triode Q1 through a resistor R6.
Claims (7)
1. A brain reflex therapeutic apparatus comprises a control terminal, a constant current source circuit, a transformer T1A, a switch tube Q2 and a PWM signal source; under the control of the control terminal, the output of the constant current source circuit is connected with the D pole of the switching tube Q2 through the primary coil of the transformer T1A, the S pole of the switching tube Q2 is grounded, and the G pole of the switching tube Q2 is controlled by the output end of the PWM signal source of the control terminal; the method is characterized in that: the control circuit comprises a digital key on a panel, a DA conversion circuit for DA converting data input by the digital key, an amplifying circuit for amplifying an analog signal which is output by the DA conversion circuit and reflects the data, and the output of the amplifying circuit controls the output amplitude of the constant current source circuit; the DA conversion circuit comprises a digital-to-analog conversion chip U4 with the model number of AD7520JN, a digital input interface for accessing data input from a digital key into the digital-to-analog conversion chip U4 through a data bus, an analog signal output end is connected with the input end of the amplifying circuit, a reference voltage input end of the digital-to-analog conversion chip U4 inputs-9.2V reference voltage, and a feedback input interface is connected with the output end of the amplifying circuit.
2. The brain reflex treatment apparatus of claim 1, wherein: the amplifying circuit comprises a precision operational amplifier U1A with the model number of OP07CP, the analog signal output end of a digital-to-analog conversion chip U4 is connected with the inverting input end of the precision operational amplifier U1A, the non-inverting input end of the precision operational amplifier U1A is grounded through a resistor R9, and the non-inverting input end of the precision operational amplifier U1A is connected with the analog-to-digital control end of a control terminal through a resistor R10; the resistor R12 is arranged between the inverting input end and the output end of the precision operational amplifier U1A, and the precision operational amplifier U1A forms an amplified output signal which is connected with the feedback input end of the digital-to-analog conversion chip U4.
3. The brain reflex treatment apparatus of claim 2, wherein: the constant current source circuit comprises a precision operational amplifier U2A, a Darlington triode Q1, a resistor R4 and a diode D2; the output end of the amplifying circuit is connected with the non-inverting input end of the precision operational amplifier U2A, the output end of the precision operational amplifier U2A is connected with the base electrode of the Darlington transistor Q1 through a resistor R4, the collector electrode of the Darlington transistor Q1 is connected with a 12V working power supply, the emitter electrode of the Darlington transistor Q1 forms constant current output, the diode D2 is arranged between the base electrode of the Darlington transistor Q1 and the ground, and the cathode of the diode D2 is grounded; the inverting input end of the precision operational amplifier U2A is connected to the emitter of the Linton triode Q1 through a resistor R6.
4. The brain reflex treatment apparatus of claim 1, 2 or 3, wherein: the secondary side of the transformer T1A comprises a first secondary side coil and a second secondary side coil which are the same, a resistor R1, a resistor R2, a common-mode inductor L1A and a common-mode inductor L2A;
two ends of the first secondary coil are respectively connected with two ends of a resistor R1 and the 1 st and 4 th pins of a common mode inductor L1A, and the 2 nd and 3 rd pins of the common mode inductor L1A form a first pair of treatment electrodes;
two ends of the second secondary coil are respectively connected with two ends of a resistor R2 and the 1 st pin and the 4 th pin of a common mode inductor L2A, and the 2 rd pin and the 3 rd pin of the common mode inductor L2A form a second pair of treatment electrodes.
5. The brain reflex treatment apparatus of claim 4, wherein: the PWM signal source output end of the control terminal is also provided with a driving circuit of a switching tube Q2, and the driving circuit comprises a triode Q3, a resistor R7, a resistor R8, a capacitor C23 and a capacitor C22;
the output end of the PWM signal source of the control terminal is connected with the base electrode of the triode Q3 through a parallel circuit consisting of a resistor R8 and a capacitor C23, a 12V working power supply is connected with the collector electrode of the triode Q3 through a resistor R7, the emitter electrode of the triode Q3 is grounded, and the capacitor C22 is arranged between the 12V working power supply and the ground.
6. The brain reflex treatment apparatus of claim 5, wherein: and diodes D1 are also arranged at two ends of the primary side of the transformer T1A, and the anode of each diode D1 is connected with the negative end of the primary side of the transformer T1A.
7. The brain reflex treatment apparatus of claim 5, wherein: when the output end of the constant current source circuit is input into the transformer T1A, the output end of the constant current source circuit passes through a filter circuit, and the filter circuit comprises an electrolytic capacitor C21 and a resistor R3; the electrolytic capacitor C21 and the resistor R3 are both arranged between the output end of the constant current source circuit and the ground, and the cathode of the electrolytic capacitor C21 is grounded.
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| CN108498319A (en) * | 2018-04-24 | 2018-09-07 | 河南爱因糖尿病健康科学研究院股份有限公司 | Diabetic supersession therapeutic equipment and its method for generating class sinusoidal signal |
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| CN2853089Y (en) * | 2005-11-25 | 2007-01-03 | 上海电气自动化设计研究所有限公司 | Pulse amplitude digit regulatable electronic acupuncture and moxibustion circuit |
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