CN105467263A - Device and method of electric acupuncture therapeutic instrument leakage current detection - Google Patents
Device and method of electric acupuncture therapeutic instrument leakage current detection Download PDFInfo
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- CN105467263A CN105467263A CN201610002130.8A CN201610002130A CN105467263A CN 105467263 A CN105467263 A CN 105467263A CN 201610002130 A CN201610002130 A CN 201610002130A CN 105467263 A CN105467263 A CN 105467263A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention discloses a device and a method of electric acupuncture therapeutic instrument leakage current detection. A transformer is adopted to detect the leakage current of the electric acupuncture therapeutic instrument, the transformer is serially connected between the electric acupuncture therapeutic instrument and a three-line socket; the transformer adopts a mode of parallel winding of two lines; one line is connected with a fire line, and the other line is connected with a zero line; the difference between current flowing in the electric acupuncture therapeutic instrument by the fire line and current flowing out of the electric acupuncture therapeutic instrument by the zero line is the leakage current; the leakage current is amplified via the transformer and an operational amplifier, A/D conversion is carried out through high-precision 16 bit AD, and liquid crystal display is finally carried out after processing by a single chip microcomputer module. The method of the invention which breaks the traditional leakage current detection method is adopted to detect the leakage current of the electric acupuncture therapeutic instrument, safety of the electric acupuncture therapeutic instrument is ensured, and safety of a patient is ensured to a certain degree.
Description
Technical field
The present invention relates to a kind of leak current detection device and method, particularly a kind of electric needle therapeutic instrument leak current detection device and method.
Background technology
Electric needle therapeutic instrument is a kind of instrument producing all kinds pulse, and the channels and collaterals utilizing the pulse produced to be divided by acupuncture treatment input partes corporis humani, produce spread effect, to replace the artificial mechanism concussion spread effect of constantly handling the needle produced with hand.Electrical acupuncture method is on the basis of traditional Chinese medical science traditional acupuncture therapy, the novel therapy of one that the theoretical developments drawing hyundai electronics medical science is got up.By the micro-current close to human biological electricity, acupuncture and electric current combine, and reach effect of acupuncture inner disease outer treat, dredging the channel, YIN and YANG balance regulating, strengthening vital QI to eliminate pathogenic factors.Electric needle therapeutic instrument clinically application safety is reliable, simple and easy to do, evident in efficacy, and application widely.
Because electric needle therapeutic instrument is by acupuncture treatment input human body micro-current, with direct body contact and insert human body, if the leakage current of electric needle therapeutic instrument is excessive, patient may feel uncomfortable, even cause the great security incident such as dead, therefore carries out detection tool to the leakage current of electric needle therapeutic instrument and has very great significance.
Existing creepage detection method utilizes magnetic core, the winding of magnetic core adds forward and reverse pulse voltage, the size of leakage current is calculated by gathering magnetic core forward and reverse saturated mistiming, this method circuit is complicated, error is comparatively large, complicated operation, and cannot be used for the leakage current detecting electric needle therapeutic instrument.
Summary of the invention
For the deficiency of background technology, the object of the invention is to provide a kind of apparatus and method adopting transformer to detect electric needle therapeutic instrument leakage current.
Electric needle therapeutic instrument leak current detection device, comprise three-plug connector, transformer, amplifying circuit, A/D convertor circuit, single chip processing module, LCD MODULE, reset and download circuit, power module, described transformer series is between three-plug connector and electric needle therapeutic instrument, amplifying circuit is connected with the secondary coil of transformer, the output of amplifying circuit connects A/D convertor circuit, the output of A/D convertor circuit connects single chip processing module, the external LCD MODULE of single chip processing module, power module is to amplifying circuit, A/D convertor circuit, single chip processing module, LCD MODULE is powered, reset and download circuit are to monolithic processor resetting and the single-chip microcomputer that downloads.
Described transformer is made up of primary winding and secondary coil, primary winding adopt two wires and around mode, the number of turn of secondary coil is far longer than the number of turn of primary winding, the two ends of a copper cash of primary winding connect the live wire of three-plug connector and the live wire entrance of electric needle therapeutic instrument respectively, and the two ends of another copper cash of primary winding connect the zero line of three-plug connector and the zero line entrance of electric needle therapeutic instrument respectively; One termination signal of secondary coil exports, other end ground connection.
The model of the operational amplifier in described amplifying circuit is OP07, first operational amplifier U2 and the second operational amplifier U3 adopts the mode of cascade, 6 pin of the first operational amplifier U2 are connected by series connection first resistance R2 with 2 pin of the second operational amplifier U3, 2 pin of the first operational amplifier U2 are connected by series connection second resistance R4 with 2 pin of the second operational amplifier U3, 3 pin of the first operational amplifier U2 are connected by series connection the 3rd resistance R5 with 6 pin of the second operational amplifier U3, 3 pin of the one termination first operational amplifier U2 of the 4th resistance R6, the other end ground connection of the 4th resistance R6, 2 pin of the one termination second operational amplifier U3 of the first electric capacity C4, the signal of another termination secondary coil of the first electric capacity C4 exports.
AD conversion chip U4 model in described A/D convertor circuit is ADS1115,4 pin of AD conversion chip U4 connect 6 pin of the first operational amplifier U2,1 pin of AD conversion chip U4,3 pin and 5 pin ground connection, the 8 pin power supplys of AD conversion chip U4,9 pin of AD conversion chip U4 meet the first pull-up resistor R8 and export digital quantity, and 10 pin of AD conversion chip U4 meet the second pull-up resistor R7 and export digital quantity.
In described single chip processing module, single-chip microcomputer U1 model is STM8,23 pin of single-chip microcomputer U1 connect 9 pin of AD conversion chip U4,24 pin of single-chip microcomputer U1 connect 10 pin of AD conversion chip U4,10 pin of single-chip microcomputer U1,11 pin, 12 pin, 13 pin connect LCD MODULE, 27 pin and 28 pin of single-chip microcomputer U1 connect download program interface, and 1 pin of single-chip microcomputer U1 connects reset circuit.
The creepage detection method of electric needle therapeutic instrument, described transformer series is in the power lead of electric needle therapeutic instrument, namely two copper cash of primary winding of transformer are connected in live wire and zero line respectively, and live wire flows into the leakage current that difference between currents that the electric current of electric needle therapeutic instrument and zero line flow out electric needle therapeutic instrument is electric needle therapeutic instrument; If the electric current on live wire is equal with the electric current on zero line, can be cancelled out each other by induced field, it is just 0 in ideal conditions that the electric current of secondary coil exports; If the electric current on the electric current on live wire and zero line is unequal, induced field cannot be cancelled out each other, and secondary coil has electric current and exports, amplified by transformer, amplify through operational amplifier, high-precision AD change-over circuit carries out analog to digital conversion again, and single chip processing module reads data and display in real time.
Beneficial effect of the present invention: the invention provides a kind of transformer that adopts to detect the apparatus and method of the leakage current of electric needle therapeutic instrument, breaches the apparatus and method that existing magnetic core detects leakage current.The present invention can carry out security inspection to electric needle therapeutic instrument, has ensured the safety of patient to a certain extent.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present invention;
Fig. 2 is transformer front-end circuit figure of the present invention;
Fig. 3 is amplification circuit diagram of the present invention;
Fig. 4 is A/D convertor circuit figure of the present invention;
Fig. 5 is single chip processing module circuit diagram of the present invention;
1. three-plug connectors, 2. transformer, 3. electric needle therapeutic instrument, 4. amplifying circuit in figure, 5.AD change-over circuit, 6. single chip processing module, 7. LCD MODULE, 8. reset and download circuit, 9. power module.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The circuit structure block diagram of electric needle therapeutic instrument leak current detection device as shown in Figure 1, comprise three-plug connector 1, transformer 2, amplifying circuit 4, A/D convertor circuit 5, single chip processing module 6, LCD MODULE 7, reset and download circuit 8, power module 9, transformer 2 is connected between three-plug connector 1 and electric needle therapeutic instrument 3, amplifying circuit 4 is connected with the secondary coil of transformer 2, the output of amplifying circuit 4 connects A/D convertor circuit 5, the output of A/D convertor circuit 5 connects single chip processing module 6, the external LCD MODULE 7 of single chip processing module 6, power module 9 gives amplifying circuit 4, A/D convertor circuit 5, single chip processing module 6, LCD MODULE 7 is powered, reset and download circuit 8 pairs of monolithic processor resettings and the single-chip microcomputer that downloads.
The transformer front-end circuit figure of electric needle therapeutic instrument leak current detection device as shown in Figure 2, transformer is made up of primary winding and secondary coil, the two ends of one copper cash of primary winding are connect the live wire of three-plug connector 1 and the live wire entrance of electric needle therapeutic instrument 3 respectively, and the two ends of another strand of copper cash of primary winding connect the zero line of three-plug connector 1 and the zero line entrance of electric needle therapeutic instrument 3 respectively; One termination signal of secondary coil exports, other end ground connection.Primary winding adopt two wires and around mode, such winding coupling ratio is better, and leakage inductance is less, and ensures that the number of turn of secondary coil is far longer than the number of turn of primary winding.Owing to can not affect the normal work of electric needle therapeutic instrument 3 when detecting, require that the series impedance of primary winding is very little, when namely electric needle therapeutic instrument is operated in high-power, the loss of transformer is also very little.Because civil power is 220V, the turn-to-turn of transformer is withstand voltage must be higher.
The amplification circuit diagram of electric needle therapeutic instrument leak current detection device as shown in Figure 3, the model of the operational amplifier in amplifying circuit 4 is OP07, first operational amplifier U2 and the second operational amplifier U3 adopts the mode of cascade, 6 pin of the first operational amplifier U2 are connected by series connection first resistance R2 with 2 pin of the second operational amplifier U3, 2 pin of the first operational amplifier U2 are connected by series connection second resistance R4 with 2 pin of the second operational amplifier U3, 3 pin of the first operational amplifier U2 are connected by series connection the 3rd resistance R5 with 6 pin of the second operational amplifier U3, 3 pin of the one termination first operational amplifier U2 of the 4th resistance R6, the other end ground connection of the 4th resistance R6, 2 pin of the one termination second operational amplifier U3 of the first electric capacity C4, the signal of another termination secondary coil of the first electric capacity C4 exports.Operational amplifier requires good, the bias current of low frequency characteristic and bias voltage is little, high-gain, in order to obtain high-gain, adopt two amplifier cascades, and adopt feed-forward technique design circuit, simultaneously in order to prevent vibration, adopt two resistance decrements in the middle of cascade, lower open-loop gain, minimum phase margin is suitably increased.
The A/D convertor circuit figure of electric needle therapeutic instrument leak current detection device as shown in Figure 4, AD conversion chip U4 model in A/D convertor circuit 5 is ADS1115,4 pin of AD conversion chip U4 connect 6 pin of the first operational amplifier U2,1 pin of AD conversion chip U4,3 pin and 5 pin ground connection, the 8 pin power supplys of AD conversion chip U4,9 pin of AD conversion chip U4 meet the first pull-up resistor R8 and export digital quantity, and 10 pin of AD conversion chip U4 meet the second pull-up resistor R7 and export digital quantity.
The single chip processing module circuit diagram of electric needle therapeutic instrument leak current detection device as shown in Figure 5, in single chip processing module 6, single-chip microcomputer U1 model is STM8,23 pin of single-chip microcomputer U1 connect 9 pin of AD conversion chip U4,24 pin of single-chip microcomputer U1 connect 10 pin of AD conversion chip U4,10 pin of single-chip microcomputer U1,11 pin, 12 pin, 13 pin connect LCD MODULE 7,27 pin and 28 pin of single-chip microcomputer U1 connect download program interface, and 1 pin of single-chip microcomputer U1 connects reset circuit.
Transformer 2 is connected in the power lead of electric needle therapeutic instrument 3 by the present invention, namely two copper cash of primary winding of transformer 2 are connected in live wire and zero line respectively, and live wire flows into the leakage current that difference between currents that the electric current of electric needle therapeutic instrument 3 and zero line flow out electric needle therapeutic instrument 3 is electric needle therapeutic instrument 3; If the electric current on live wire is equal with the electric current on zero line, can be cancelled out each other by induced field, it is just 0 in ideal conditions that the electric current of secondary coil exports; If the electric current on the electric current on live wire and zero line is unequal, induced field cannot be cancelled out each other, and secondary coil has the electric current amplified through transformer and exports, then amplified by operational amplifier, high-precision AD change-over circuit 5 carries out analog to digital conversion, and single chip processing module 6 reads data and display in real time.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (2)
1. electric needle therapeutic instrument leak current detection device, comprise three-plug connector (1), transformer (2), amplifying circuit (4), A/D convertor circuit (5), single chip processing module (6), LCD MODULE (7), reset and download circuit (8), power module (9), it is characterized in that: described transformer (2) is connected between three-plug connector (1) and electric needle therapeutic instrument (3), amplifying circuit (4) is connected with the secondary coil of transformer (2), the output of amplifying circuit (4) connects A/D convertor circuit (5), the output of A/D convertor circuit (5) connects single chip processing module (6), single chip processing module (6) external LCD MODULE (7), power module (9) is to amplifying circuit (4), A/D convertor circuit (5), single chip processing module (6), LCD MODULE (7) is powered, reset and download circuit (8) are to monolithic processor resetting and the single-chip microcomputer that downloads,
Described transformer (2) is made up of primary winding and secondary coil, primary winding adopt two wires and around mode, the number of turn of secondary coil is far longer than the number of turn of primary winding, the two ends of a copper cash of primary winding connect the live wire of three-plug connector (1) and the live wire entrance of electric needle therapeutic instrument (3) respectively, and the two ends of another copper cash of primary winding connect the zero line of three-plug connector (1) and the zero line entrance of electric needle therapeutic instrument (3) respectively; One termination signal of secondary coil exports, other end ground connection;
The model of the operational amplifier in described amplifying circuit (4) is OP07, first operational amplifier U2 and the second operational amplifier U3 adopts the mode of cascade, 6 pin of the first operational amplifier U2 are connected by series connection first resistance R2 with 2 pin of the second operational amplifier U3, 2 pin of the first operational amplifier U2 are connected by series connection second resistance R4 with 2 pin of the second operational amplifier U3, 3 pin of the first operational amplifier U2 are connected by series connection the 3rd resistance R5 with 6 pin of the second operational amplifier U3, 3 pin of the one termination first operational amplifier U2 of the 4th resistance R6, the other end ground connection of the 4th resistance R6, 2 pin of the one termination second operational amplifier U3 of the first electric capacity C4, the signal of another termination secondary coil of the first electric capacity C4 exports,
AD conversion chip U4 model in described A/D convertor circuit (5) is ADS1115,4 pin of AD conversion chip U4 connect 6 pin of the first operational amplifier U2,1 pin of AD conversion chip U4,3 pin and 5 pin ground connection, the 8 pin power supplys of AD conversion chip U4,9 pin of AD conversion chip U4 meet the first pull-up resistor R8 and export digital quantity, and 10 pin of AD conversion chip U4 meet the second pull-up resistor R7 and export digital quantity;
In described single chip processing module (6), single-chip microcomputer U1 model is STM8,23 pin of single-chip microcomputer U1 connect 9 pin of AD conversion chip U4,24 pin of single-chip microcomputer U1 connect 10 pin of AD conversion chip U4,10 pin of single-chip microcomputer U1,11 pin, 12 pin, 13 pin connect LCD MODULE (7), 27 pin and 28 pin of single-chip microcomputer U1 connect download program interface, and 1 pin of single-chip microcomputer U1 connects reset circuit.
2. utilize the creepage detection method of transformer described in claim 1, it is characterized in that: described transformer (2) is connected in the power lead of electric needle therapeutic instrument (3), namely two copper cash of primary winding of transformer (2) are connected in live wire and zero line respectively, and live wire flows into the leakage current that difference between currents that the electric current of electric needle therapeutic instrument (3) and zero line flow out electric needle therapeutic instrument (3) is electric needle therapeutic instrument (3); If the electric current on live wire is equal with the electric current on zero line, can be cancelled out each other by induced field, it is just 0 in ideal conditions that the electric current of secondary coil exports; If the electric current on the electric current on live wire and zero line is unequal, induced field cannot be cancelled out each other, secondary coil has electric current to export, amplified by transformer, amplify through operational amplifier again, high-precision AD change-over circuit (5) carries out analog to digital conversion, and single chip processing module (6) reads data and display in real time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610002130.8A CN105467263B (en) | 2016-01-06 | 2016-01-06 | Electric needle therapeutic instrument leak current detection device and method |
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| CN201610002130.8A CN105467263B (en) | 2016-01-06 | 2016-01-06 | Electric needle therapeutic instrument leak current detection device and method |
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| CN105467263A true CN105467263A (en) | 2016-04-06 |
| CN105467263B CN105467263B (en) | 2018-08-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108421160A (en) * | 2018-05-09 | 2018-08-21 | 杭州市质量技术监督检测院 | It is exclusively used in the special multi-parameter signals detection circuit of electric needle therapeutic instrument and method |
| CN108983027A (en) * | 2018-07-26 | 2018-12-11 | 上海与德科技有限公司 | Electrical leakage detecting method, device, intelligent socket and storage medium |
| CN114355029A (en) * | 2022-01-05 | 2022-04-15 | 山东省计量科学研究院 | Metering and detecting device of electric acupuncture therapeutic instrument |
| CN116907418A (en) * | 2023-09-13 | 2023-10-20 | 北京中成康富科技股份有限公司 | Millimeter wave therapeutic instrument production detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108421160A (en) * | 2018-05-09 | 2018-08-21 | 杭州市质量技术监督检测院 | It is exclusively used in the special multi-parameter signals detection circuit of electric needle therapeutic instrument and method |
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| CN116907418A (en) * | 2023-09-13 | 2023-10-20 | 北京中成康富科技股份有限公司 | Millimeter wave therapeutic instrument production detection device |
| CN116907418B (en) * | 2023-09-13 | 2023-12-01 | 北京中成康富科技股份有限公司 | Millimeter wave therapeutic instrument production detection device |
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| CN105467263B (en) | 2018-08-24 |
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Granted publication date: 20180824 Termination date: 20210106 |