CN108853726B - Special calibration system and method for electric needle therapeutic instrument - Google Patents
Special calibration system and method for electric needle therapeutic instrument Download PDFInfo
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- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 13
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- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 20
- 238000004422 calculation algorithm Methods 0.000 claims description 14
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- 230000002093 peripheral effect Effects 0.000 claims description 4
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- 230000001143 conditioned effect Effects 0.000 claims description 2
- 238000004164 analytical calibration Methods 0.000 claims 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
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Classifications
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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
- A61N1/36017—External stimulators, e.g. with patch electrodes with leads or electrodes penetrating the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H39/00—Devices for locating or stimulating specific reflex points of the body for physical therapy, e.g. acupuncture
- A61H39/002—Using electric currents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H39/00—Devices for locating or stimulating specific reflex points of the body for physical therapy, e.g. acupuncture
- A61H39/08—Devices for applying needles to such points, i.e. for acupuncture ; Acupuncture needles or accessories therefor
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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
Abstract
The invention discloses a special calibration system and method for an electric needle therapeutic instrument. The special calibration system device for the electric needle therapeutic apparatus consists of a special calibration device for the electric needle therapeutic apparatus and external equipment; the external device comprises a notebook and a printer. The electric needle therapeutic instrument calibrating device is mainly used for acquiring output signals of the electric needle therapeutic instrument. The upper computer software is mainly used for acquiring output data of the needle therapeutic apparatus calibrating device, carrying out error analysis and data integration on parameters such as output pulse voltage amplitude, maximum output current effective value, output continuous wave pulse frequency and the like, and measured values of output blocking, direct current components, shell leakage current and treatment time, and finally generating and printing a calibrating report. The invention improves the accuracy of the parameters of the electric needle therapeutic apparatus, simplifies the detection and calibration process, reduces misdiagnosis and missed diagnosis of patients, and reduces the potential safety hazard of patients to a certain extent.
Description
Technical Field
The invention relates to the field of medical metering calibration, in particular to a special calibration system and method for an electric needle therapeutic instrument.
Background
The electric needle therapeutic apparatus is an apparatus which outputs specific pulse current, acts on acupoints through acupuncture and gives treatment/auxiliary treatment to patients, the electric needle therapeutic apparatus adopts acupuncture points of human bodies to be electrified with trace current close to bioelectricity of the human bodies, and pulse electric stimulation treatment is carried out on the basis of the acupuncture points to prevent and treat diseases and promote rehabilitation of the human bodies. The electric needle therapeutic apparatus is used for treating various pain arthralgia, dysfunction of organs such as heart and stomach, injury diseases such as ligaments and joints, and the like, can also be used for acupuncture anesthesia, can accurately control stimulation electric therapy parameters, replaces medical staff to transport needles by manipulation, and improves therapeutic effects.
Accurate control of clinical key parameters of electric needle therapeutic instrument products: maximum output voltage, current, safe electricity and the like, and the metering parameters of the maximum output voltage, the current, the safe electricity and the like are extremely required to be controlled. In order to ensure accurate clinical treatment and safety guarantee, the accurate tracing of the magnitude of the electric needle therapeutic instrument is urgently needed to be solved, and a special calibration system for the electric needle therapeutic instrument is developed, so that the detection and the calibration of the clinical electric needle therapeutic instrument are conveniently, rapidly and safely realized.
The electric acupuncture therapeutic apparatus mainly applies pulse electric stimulation therapy to the acupuncture points of a patient. The characteristics of the device may change during long term use, with serious consequences if misdiagnosis occurs. In order to ensure the high efficiency and accuracy of treatment, each parameter of the electric needle therapeutic apparatus should be detected periodically, so that the related parameter can trace to national measurement standard or public measurement standard. Therefore, a device and a complete calibration system for calibrating an electric needle therapeutic apparatus are needed to realize the tracing of parameters such as key parameters (output pulse voltage amplitude, maximum output current effective value and output continuous wave pulse frequency) and normal detection (output blocking, direct current component, shell leakage current and treatment time) in the electric needle therapeutic apparatus.
Disclosure of Invention
In view of the current situation described in the background art, the present invention aims to provide a special calibration system for an electric needle therapeutic apparatus, which is used for calibrating parameters such as an output pulse voltage amplitude value, a maximum output current effective value, an output continuous wave pulse frequency and the like of the electric needle therapeutic apparatus and detecting output blocking, direct current components, shell leakage current, treatment time and the like normally.
The special calibration system for the electric needle therapeutic apparatus comprises an electric needle therapeutic apparatus calibration device and external equipment, wherein the external equipment comprises a notebook and a printer.
The electric needle therapeutic apparatus calibrating device is connected with the electric needle therapeutic apparatus; the electric needle therapeutic apparatus calibrating device processes and calculates the pulse signal sent by the electric needle therapeutic apparatus and then transmits the measured value to a notebook with upper computer processing software; and the notebook is internally provided with upper computer processing software, and the printer is connected with the notebook for printing a calibration report.
Further, the instrument part hardware circuit consists of an input module, a signal processing module, a processor module and an interface module; the input module receives an output signal of the electric needle therapeutic apparatus and transmits the output signal to the signal processing module through the load impedance, the signal processing module is composed of a voltage measuring module, a current measuring module and a time-frequency measuring module, wherein the current measuring module and the time-frequency measuring module are connected in series with a human body analog impedance, the processor module is composed of an MCU, a liquid crystal, a crystal oscillator, a storage and a power supply, and the interface module is composed of a USB interface module and an RS232 interface module.
The voltage measuring module in the signal processing module detects clinical safety diagnosis and treatment key parameters such as output blocking, treatment time, output pulse voltage amplitude and the like of the electric needle therapeutic instrument. The voltage measurement module consists of a passive attenuation circuit, an impedance matching circuit, a program-controlled amplifying circuit and a level shift circuit; the current measurement module is used for detecting clinical safety diagnosis and treatment key parameters such as a direct current component, a shell leakage current, a maximum output current effective value and the like of the electric needle therapeutic instrument. The current measuring module consists of a leakage current measuring circuit, a direct current component detecting circuit and a current effective value measuring circuit; the time-frequency measurement module detects clinical safety diagnosis and treatment key parameters such as treatment time of the electric needle therapeutic apparatus, output continuous wave pulse frequency and the like. The detection method of the time-frequency measurement module consists of a frequency measurement unit and a time measurement unit.
The MCU selects an ARM core chip with the model of STM32F103ZET6, the liquid crystal selects a 4.3 inch capacitive touch screen, and the resolution ratio is 800 x 480.
Furthermore, when the electric needle therapeutic apparatus calibrating device is used for calibrating, three modes of key parameter calibration, normal calibration and frequency tracing exist; the key parameter calibration mode automatically selects key parameters and automatically enters the calibration of the next key parameters, the normal calibration must manually select normal parameters and manually select parameters, and the frequency tracing mode automatically selects frequencies and automatically traces the source.
A calibration method based on the device comprises the following steps: the method comprises a lower computer processing algorithm and an upper computer processing algorithm, wherein the lower computer processing algorithm comprises the following steps:
s1: initializing an MCU and peripheral equipment thereof;
s2: selecting key parameter calibration, normal calibration or frequency tracing, if the key parameter calibration is selected, collecting output signals of the electric needle therapeutic instrument, and calculating to obtain an output pulse voltage amplitude U M Maximum output current effective value I E And outputting the continuous wave pulse frequency f, the output pulse voltage amplitude being expressed asTo U M Processing to obtain a voltage effective value U E Maximum output current effective value is expressed as +.>If the normal calibration is selected, the output signal of the electric needle therapeutic instrument is collected, and the output locking U is obtained by calculation S Direct current component I D Leakage current I of outer shell L And a measure of treatment time t, output lock expressed asThe DC component is expressed as +.>The leakage current of the housing is expressed as +.>If the frequency tracing is selected, the standard signal source is utilized to trace the source of the crystal oscillator from the outside.
S3: and transmitting the output pulse voltage amplitude, the maximum output current effective value, the output continuous wave pulse frequency and other parameters and the measured values of output blocking, direct current components, shell leakage current and treatment time to an upper computer through an RS232 interface module, and displaying and storing the measured values on liquid crystal.
The upper computer software processing algorithm comprises the following steps:
s1: and receiving parameters such as the amplitude of the output pulse voltage, the effective value of the maximum output current, the pulse frequency of the output continuous wave and the like transmitted by the lower computer, and outputting measured values of blocking, direct current components, shell leakage current and treatment time.
S2: and carrying out error analysis and data integration on parameters such as output pulse voltage amplitude, maximum output current effective value, output continuous wave pulse frequency and the like, and output blocking, direct current components, shell leakage current, measured values of treatment time and the like, generating a calibration report, and carrying out report printing.
The invention has the beneficial effects that:
the invention fills the blank of a special calibration system for the electric needle therapeutic apparatus, particularly unifies the calibration method and the detection technology of the electric needle therapeutic apparatus, solves the problems of magnitude transmission and tracing of the electric needle therapeutic apparatus, improves the accuracy of parameters of the electric needle therapeutic apparatus, reduces the probability of misdiagnosis and missed diagnosis of patients, and improves the safety of the patients.
The invention realizes the simultaneous measurement of key parameters such as the output pulse voltage amplitude, the maximum output current effective value, the output continuous wave pulse frequency and the like of the electric needle therapeutic instrument and the integrated measurement of the normal detection technical indexes such as output blocking, direct current components, shell leakage current, treatment time and the like by arranging the human body analog impedance, the program-controlled amplifying circuit and the current effective value measuring circuit through the special circuit design, and improves the calibration and detection efficiency of the electric needle therapeutic instrument.
Drawings
FIG. 1 is a block diagram of a system design of the present invention;
FIG. 2 is a block diagram of a hardware circuit design of the present invention;
FIG. 3 is a schematic block diagram of the output pulse voltage amplitude detection of the present invention;
FIG. 4 is a schematic block diagram of a programmable amplifying circuit of the present invention;
FIG. 5 is a schematic block diagram of leakage current detection in accordance with the present invention;
FIG. 6 is a block diagram of the operational flow of the present invention;
fig. 7 is a block flow diagram of a processing algorithm of the present invention.
Detailed Description
The special calibration system design block diagram of the electric needle therapeutic apparatus shown in fig. 1 comprises an electric needle therapeutic apparatus calibration device 1 and an external device 2. The external device 2 includes a notebook 2-1 and a printer 2-2. The electric needle therapeutic apparatus calibrating device 1 is connected with an electric needle therapeutic apparatus, the electric needle therapeutic apparatus calibrating device 1 is provided with a measuring circuit for measuring output signals of the electric needle therapeutic apparatus, after processing and operation, measured values of all parameters are displayed on a liquid crystal, stored and transmitted to the notebook computer 2-1 with upper computer processing software, the notebook computer 2-1 receives output images of the electric needle therapeutic apparatus and measured values of all parameters, the upper computer processing software is installed in the notebook computer 2-1, and the printer 2-2 is connected with the notebook computer 2-1 for printing a calibration report.
As shown in the hardware circuit design block diagram of the electric needle therapeutic apparatus calibrating device shown in FIG. 2, the hardware circuit of the electric needle therapeutic apparatus calibrating device 1 consists of an input module 1-1, a signal processing module 1-2, a processor module 1-3 and an interface module 1-4; the input module 1-1 is composed of human body simulation impedance and load impedance, the electric needle therapeutic instrument is connected with the load impedance, and output signals are transmitted to the signal processing module 1-2 through the load impedance. The signal processing module 1-2 is composed of a voltage measuring module, a current measuring module and a time-frequency measuring module (namely other modules), the output pulse voltage amplitude and the output blocking in the output signal of the electric needle therapeutic apparatus are processed by the voltage measuring module, the maximum output current effective value, the direct current component and the shell leakage current are processed by the current measuring module, wherein a human body simulation impedance is required to be connected in series between the current measuring module and the time-frequency measuring module, and the output continuous wave pulse frequency and the treatment time are processed by the time-frequency measuring module. The processor module 1-3 consists of an MCU, a keyboard, a liquid crystal, a storage and a power supply, wherein the keyboard is used for simple operations such as resetting and switching, the complex operations are performed on the liquid crystal of the capacitive touch screen, and the liquid crystal is used for displaying measurement data and waveforms of various parameters and the calibration process; the interface modules 1-4 consist of a USB interface module and an RS232 interface module, wherein the USB interface module is used for reading waveform data in the electric needle therapeutic apparatus calibration device 1 to an upper computer, and the RS232 interface module is used for being connected with a notebook computer with upper computer processing software to transmit the data in the electric needle therapeutic apparatus calibration device 1 to the upper computer for generating a calibration report;
as shown in FIG. 3, the output signal of the electric needle therapeutic apparatus can be about + -50V at maximum, and the microprocessor STM3 is usedThe input voltage range of the AD module of the 2F103ZET6 is only 0-3.3V, and the output signal of the electric needle therapeutic instrument belongs to a low-frequency signal, so that the amplitude of the input signal is attenuated by adopting passive attenuation G O Multiple. In order to avoid unnecessary errors caused by the parallel connection of the input impedance of the detection device to the circuit of the electric needle therapeutic apparatus, the impedance matching circuit is designed so that the amplitude range of the input signal is controlled between-5V and +5V. The impedance-matched signal may need to be amplified properly, so a programmable amplifying circuit is designed. The design of the program-controlled amplifying circuit is realized by adopting a DAC (digital to analog converter) with STM32 and 1 voltage-controlled variable gain amplifier VCA822, and meanwhile, a level shifting circuit is also used, as shown in fig. 4. The singlechip generates analog voltage through a channel PA4 with a DAC, and the voltage follower circuit formed by an OPA656 of TI company is used as an isolation stage, so that the influence of a later-stage circuit on a previous-stage circuit can be reduced. Under control voltage, VCA822 may provide accurate gain and vary linearly. The gain of the amplifier is controlled by the peripheral resistor R f 、R G And control voltage V G Together, the DAC (PA 4 port) through STM32 outputs a control voltage V G The number of bits is 12, the purpose of program control gain is achieved, the signal is conditioned to the optimal acquisition state, therefore, the gain of the program control amplifying circuit can be expressed as
I.e. by changing the control voltage V G Is + -1V to obtain a gain of 0-10V/V. Under the action of control voltage, gain of 0-10V/V is obtained. Because the input voltage range of the AD module of STM32F103ZET6 is only 0-3.3V and the output of the program-controlled amplifying circuit is + -1V, level shift U is needed r So as to meet the signal acquisition requirement. Besides the output amplitude controller is preset at the minimum position, the electric needle therapeutic apparatus has no energy output, and the output blocking is also suitable for the condition of recovering after the power supply is interrupted. For the weak signal, an output locking circuit is adopted, so that the output of the voltage is controlled to be 0-3.3V, and the AD acquisition range of the STM32 singlechip is met.
The detection circuit of leakage current is shown in fig. 5, the leakage current signal firstly converts the current signal into a voltage signal through 1 MD measuring impedance network; the impedance network consists of 1 10k resistor, 1k resistor and 1 0.015uF capacitor connected in series and parallel to simulate the impedance R of human body P The method comprises the steps of carrying out a first treatment on the surface of the G is then amplified via an amplifying circuit composed of ICL7650S O After the multiple, the AD637 is entered for true effective value calculation; the output voltage of the AD637 enters an AD module of the STM32 singlechip after being subjected to 1 overvoltage protection.
The electric needle therapeutic apparatus calibrating device 1 receives the output signal of the electric needle therapeutic apparatus, transmits the operation flow chart of the special calibrating system of the electric needle therapeutic apparatus shown in figure 6 after conditioning, starts the apparatus, selects the electric needle therapeutic apparatus calibration on the main interface of the touch screen of the apparatus, enters the electric needle therapeutic apparatus calibration interface, selects the key parameter calibration interface, enters the key parameter calibration interface, automatically sets key parameter signals, and calibrates the first key parameter until the calibration of all key parameters is completed; returning to the main interface, selecting 'normal calibration', entering a 'normal calibration' interface, and manually setting normal calibration parameters of calibrated parameters by an instrument and manually pressing the calibrated parameters until the calibration of all the normal parameters is completed; and returning to the main interface, selecting 'frequency tracing', and finishing frequency tracing. Opening upper computer processing software on the notebook, clicking the 'received data', clicking the 'error calculation and data integration' after receiving, and clicking after finishing: and (3) generating a calibration report, clicking the printing after the generation of the report, finishing the printing of the calibration report, and finally shutting down the instrument and closing the upper computer software to finish the calibration.
The flow chart of the processing algorithm of the special calibration system of the electric needle therapeutic apparatus shown in fig. 7 comprises a lower computer processing algorithm and an upper computer software processing algorithm, wherein the lower computer processing algorithm comprises the following steps:
s1: initializing an MCU and peripheral equipment thereof; s2: selecting key parameter calibration, normal calibration or frequency tracing, and if the key parameter calibration is selected, collecting the output of the electric needle therapeutic instrumentOutputting the signal, and calculating to obtain an output pulse voltage amplitude U M Maximum output current effective value I E And outputting the continuous wave pulse frequency f, the output pulse voltage amplitude being expressed asU IN For the collected voltage value, G O1 In this embodiment, U is selected as the rimless attenuation factor r ＝1.25V，G O1 =50, pair U M Processing to obtain a voltage effective value U E Maximum output current effective value is expressed as +.>If the normal calibration is selected, the output signal of the electric needle therapeutic instrument is collected, and the output locking U is obtained by calculation S Direct current component I D Leakage current I of outer shell L And the measurement t of the treatment time, output lock is expressed as +.>The DC component is expressed as +.>The leakage current of the housing is expressed as +.>G O2 To output AD8607 amplification, G in latch-up circuit O3 For AD8607 amplification factor, G in DC component detection circuit O4 For ICL7650S amplification in leakage current measurement circuit, G is selected in this embodiment O2 ＝100，G O3 ＝10，G O4 =3000; if the frequency tracing is selected, the standard signal source is utilized to trace the source of the crystal oscillator from the outside. S3: and transmitting the output pulse voltage amplitude, the maximum output current effective value, the output continuous wave pulse frequency and other parameters and the measured values of output blocking, direct current components, shell leakage current and treatment time to an upper computer through an RS232 interface module, and displaying and storing the measured values on liquid crystal.
The upper computer software processing algorithm comprises the following steps: s1: receiving parameters such as output pulse voltage amplitude, maximum output current effective value, output continuous wave pulse frequency and the like transmitted by a lower computer, and outputting measured values of blocking, direct current component, shell leakage current and treatment time; s2: and carrying out error analysis and data integration on parameters such as output pulse voltage amplitude, maximum output current effective value, output continuous wave pulse frequency and the like, and output blocking, direct current components, shell leakage current, measured values of treatment time and the like, generating a calibration report, and carrying out report printing.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (3)
1. The special calibration system for the electric needle therapeutic apparatus comprises an electric needle therapeutic apparatus calibration device (1) and an external device (2), wherein the external device (2) comprises a notebook (2-1) and a printer (2-2);
the utility model provides an electric needle therapeutic instrument calibrating device (1) be connected with electric needle therapeutic instrument, electric needle therapeutic instrument calibrating device (1) is equipped with measuring circuit for measure electric needle therapeutic instrument's output signal, after handling and operation, with each parameter measurement show on the liquid crystal and store and pass to notebook (2-1) of taking host computer software, notebook (2-1) receive the output image of electric needle therapeutic instrument calibrating device (1) and the measured value of each parameter, install host computer processing software in notebook (2-1), printer (2-2) are connected with notebook (2-1), carry out the printing of calibration report, its characterized in that:
the hardware circuit of the electric needle therapeutic apparatus calibrating device (1) consists of an input module (1-1), a signal processing module (1-2), a processor module (1-3) and an interface module (1-4), wherein the input module (1-1) consists of human body simulation impedance and load impedance, the signal processing module (1-2) consists of a voltage measuring module, a current measuring module and a time-frequency measuring module, the processor module (1-3) consists of an MCU, a keyboard, liquid crystal, a storage and a power supply, the interface module (1-4) consists of a USB interface module and an RS232 interface module, the input module receives an input signal of the electric needle therapeutic apparatus, the input signal is conditioned by the signal processing module and then is transmitted to the processor module, and the processor module is connected with the notebook (2-1) through the interface module;
the voltage measurement module consists of a passive attenuation circuit, an impedance matching circuit, a program-controlled amplifying circuit and a level shift circuit, and the detection technical index of the voltage measurement module consists of output locking output pulses and voltage amplitude values; the current measurement module consists of a leakage current measurement circuit, a direct current component detection circuit and a current effective value measurement circuit, and the detection technical index of the current measurement module consists of a direct current component, a shell leakage current and a maximum output current effective value; the time-frequency measuring module consists of a frequency measuring unit and a time measuring unit, and the detection technical index of the time-frequency measuring module consists of treatment time and output continuous wave pulse frequency;
the detection parameters output by the signal processing module comprise output blocking output pulse, voltage amplitude, direct current component, shell leakage current, maximum output current effective value, treatment time and output continuous wave pulse frequency;
when the electric needle therapeutic instrument calibration device performs frequency tracing, software tracing is performed on the crystal oscillator from the outside by using a standard signal source.
2. The electro-needle therapeutic apparatus specific calibration system as defined in claim 1, wherein: the MCU selects an ARM core chip with the model of STM32F103ZET6, the liquid crystal selects a 4.3 inch capacitive touch screen, and the resolution ratio is 800 x 480.
3. A method for calibrating by using the system of claim 1, comprising a lower computer processing algorithm in the MCU and an upper computer software processing algorithm in the notebook, wherein the method is characterized in that: the lower computer processing algorithm comprises the following steps:
s1: initializing an MCU and peripheral equipment thereof;
s2: selecting key parameter calibration, normal calibration or frequency tracing, if the key parameter calibration is selected, collecting output signals of the electric needle therapeutic instrument, and calculating to obtain an output pulse voltage amplitude U M Maximum output current effective value I E And outputting a continuous wave pulse frequency f; if the normal calibration is selected, the output signal of the electric needle therapeutic instrument is collected, and the output locking U is obtained by calculation S Direct current component I D Leakage current I of outer shell L And a measure of treatment time t; if the frequency tracing is selected, tracing the crystal oscillator from the outside by using a standard signal source;
s3: transmitting the measured values of the amplitude of the output pulse voltage, the maximum output current effective value, the output continuous wave pulse frequency, the output blocking, the direct current component, the shell leakage current and the treatment time to an upper computer through an RS232 interface module, and displaying and storing the measured values on liquid crystal;
the upper computer software processing algorithm comprises the following steps:
s1: receiving the measured value transmitted by the lower computer;
s2: and carrying out error analysis and data integration on the measured values of the output pulse voltage amplitude, the maximum output current effective value, the output continuous wave pulse frequency, the output blocking, the direct current component, the shell leakage current and the treatment time, generating a calibration report, and carrying out report printing.
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| CN109738692A (en) * | 2018-12-26 | 2019-05-10 | 中国计量大学 | It is exclusively used in the instantaneous power detection circuit and its design method of electric needle therapeutic instrument |
| CN111190133A (en) * | 2020-01-09 | 2020-05-22 | 上海市计量测试技术研究院 | Signal source |
| CN112650346A (en) * | 2020-12-23 | 2021-04-13 | 黑龙江宇奇科技有限公司 | Closed-loop control method for output current of meridian therapeutic apparatus |
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