CN102788906A - High-frequency impedance tester - Google Patents
High-frequency impedance tester Download PDFInfo
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- CN102788906A CN102788906A CN2012102566698A CN201210256669A CN102788906A CN 102788906 A CN102788906 A CN 102788906A CN 2012102566698 A CN2012102566698 A CN 2012102566698A CN 201210256669 A CN201210256669 A CN 201210256669A CN 102788906 A CN102788906 A CN 102788906A
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Abstract
The invention relates to a high-frequency impedance tester and belongs to the fields of a power supply and testing technology. The high-frequency impedance tester comprises a high-frequency voltage generator, a high-frequency peak voltmeter, a high-frequency true effective value voltmeter and a high-frequency true effective value ampere meter, wherein an output end of the high-frequency voltage generator is externally connected with a load; the high-frequency voltage generator is mainly composed of a crystal oscillator circuit, a shaping driving circuit, a switch return stroke circuit, a voltage frequency-selecting sine output circuit and an output voltage adjusting circuit; the high-frequency true effective value voltmeter and the high-frequency peak voltmeter are respectively connected with the voltage frequency-selecting sine output circuit of the high-frequency voltage generator coupled through a transformer; and the high-frequency true effective value ampere meter is in coupled connection with the output end of the high-frequency voltage generator through a mutual inductor. After the high-frequency impedance tester provided by the invention is connected with a to-be-tested load, the voltage peak value, the true effective value voltage and current parameters can be reflected in real time, so that convenience in use is brought.
Description
Technical field
The present invention relates to a kind of medical equipment testing tool, especially a kind of high-frequency resistance tester belongs to power supply and technical field of measurement and test.
Background technology
Understand according to the applicant, does not still have at present and be specifically designed to according to GB9706.4-2009 " the medical electrical equipment second portion: the high frequency surgical equipment secure private requires " national standard and the high frequency surgical equipment central electrode contact impedance testing tool of specialized designs manufacturing.Because therefore the design of non-specific aim exists the problem that can not directly measure peak value display voltage, real effective voltage and current value, need the supporting measurement display device that adds at the power supply of usefulness in the use, inconvenience is arranged more; And the test frequency scope of existing this type of power supply is narrower, and purposes is limited.
Retrieval is found; Application number is that the Chinese invention patent of 200720158285.7 applyings date discloses a kind of outputting bandwidth, high voltage, powerful fluorescent light testing power supply device; Comprise rectification circuit, filter protective circuit, power amplification circuit, power synthesis circuit, power output circuit, signal generator, signal converter, described power amplification circuit is made up of three independent power amplifier circuits.This device can be under the situation of peripheral auxiliary equipment, and self accomplishes broadband, high voltage, high-power output characteristics, directly is used for the testing power supply of fluorescent light, but can not be applied to medical industry, and fail to address the above problem.
Summary of the invention
The objective of the invention is to: to the problem that above-mentioned prior art exists, propose a kind of high-frequency resistance tester that can have voltage peak, real effective and current measurement demonstration, thereby facilitate, have more extensive applicability for using.
In order to reach above purpose, high-frequency resistance tester of the present invention comprises the high-frequency voltage generator of output terminal external load, also comprises high frequency peaks voltage table, high frequency real effective voltage table, and high frequency real effective reometer;
Said high-frequency voltage generator mainly by in order to crystal oscillating circuit that the high_frequency sine wave signal takes place, in order to the plastic drive circuit that high_frequency sine wave signal shaping become square wave and supercharging amplify, in order to the amplification square-wave signal of shaping once more supercharging amplify the switch inverse process circuit of back output, in order to the amplifying signal of supercharging once more of selected input and convert the sinusoidal output circuit of voltage frequency-selecting of sine wave signal output to and provide the output voltage regulation circuit of electric energy to constitute;
Said high frequency peaks voltage table is made up of peak value sampling treatment conversion circuit and PV display device;
Said high frequency real effective voltage table is made up of real effective sample conversion treatment circuit, real effective amplifying circuit and voltage display device;
Said high frequency real effective reometer is made up of frequency-selecting sample circuit, real effective conversion processing circuit, current amplification circuit and electric current display device;
Said high frequency real effective voltage table is connected respectively with through the sinusoidal output circuit of the voltage frequency-selecting of transformer-coupled high-frequency voltage generator with the high frequency peaks voltage table;
Said high frequency real effective reometer is of coupled connections through the output terminal of mutual inductor and said high-frequency voltage generator.
When high-frequency resistance tester of the present invention with after load to be measured is connected, can reflect in real time by voltage peak, real effective voltage and current parameters, therefore bring convenience to use.
In order to have enough wide test frequency scope, high-frequency voltage generator of the present invention comprises the first and second high frequency generation circuit that are connected with output voltage regulation circuit through change-over switch; It is first crystal oscillating circuit of core devices that the said first high frequency generation circuit contains with crystal oscillator and comparer, and the said second high frequency generation circuit contains by one group and is controlled by second crystal oscillating circuit that relay parallel connection crystal oscillator device constitutes respectively; The output terminal of said first and second crystal oscillating circuits connects the input end of the first and second switch inverse process circuits respectively through the plastic drive circuit that mainly is made up of shaping, amplifier device, the said first and second switch inverse process circuits are made up of first and second high-frequency transformers and the high-voltage capacitance of switching device control respectively; Through first and second transformers and the sinusoidal output circuit coupling of corresponding voltage frequency-selecting output, the sinusoidal output circuit of said voltage frequency-selecting mainly is made up of the frequency-selecting electric capacity of relay control the said first and second switch inverse process circuits respectively.Like this, can select the second higher relatively high frequency generation circuit of frequency through SS as required, export higher frequency; Also can select the first relatively low high frequency generation circuit of frequency, lower slightly the frequency of output; Thereby with simple circuit configuration, realize enough wide test frequency, satisfy various user demands.
In addition, in order to obtain stable video data, said high-frequency voltage generator also contains as output terminal waveform holding circuit, and said waveform holding circuit mainly is made up of output resistance.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the block diagram of one embodiment of the invention.
Fig. 2 always schemes for the circuit theory of Fig. 1 embodiment.
Fig. 3 is the circuit theory diagrams of Fig. 2 medium-high frequency voltage generator.
Fig. 4 is the circuit theory diagrams of Fig. 2 medium-high frequency peak-reading voltmeter.
Fig. 5 is the circuit theory diagrams of Fig. 2 medium-high frequency real effective voltage table.
Fig. 6 is the circuit theory diagrams of Fig. 2 medium-high frequency real effective reometer.
Embodiment
Embodiment one
The high-frequency resistance tester basic structure of present embodiment is as shown in Figure 1, except high-frequency voltage generator, also comprises high frequency peaks voltage table, high frequency real effective voltage table and high frequency real effective reometer.
Total figure is as shown in Figure 2 for its circuit.Concrete each several part circuit such as Fig. 3 are to shown in Figure 6.
High-frequency voltage generator sees Fig. 3 for details, contains the first and second high frequency generation circuit that are connected with output voltage regulation circuit 6 through change-over switch.Output voltage regulation circuit is made up of pressure regulator, transformer B and the current rectifying and wave filtering circuit of serial connection.
It is first crystal oscillating circuit 10 of core devices that the first high frequency generation circuit (200kHz, 500kHz) contains with crystal oscillator and comparer 311.The output terminal of first crystal oscillating circuit connects the input end of the first switch inverse process circuit 8 through the plastic drive circuit of forming in order to 4046 chips of phase locking frequency stabilized, in order to the analog switch 4522 and the amplifier 4451 of frequency multiplication shaping 9; This first switch inverse process circuit is made up of the HB1 high-frequency transformer and the high-voltage capacitance C that with FET 5010 are switching device control, in order to improve the power of switching signal drive load; The first switch inverse process circuit 8 is through HB1 high-frequency transformer and the sinusoidal output circuit 7 coupling outputs of corresponding voltage frequency-selecting as first transformer; The sinusoidal output circuit of this voltage frequency-selecting mainly is made up of the frequency-selecting electric capacity of relay control; Through waveform holding circuit 5 outputs as output terminal, this waveform holding circuit mainly is made up of output resistance.
The second high frequency generation circuit (1000kHz, 2000kHz, 5000kHz) contains by one group and is controlled by second crystal oscillating circuit 1 that the changeable crystal oscillator device of relay parallel connection constitutes respectively.By be that shaping device, amplifier 4451 are the input end that the plastic drive circuit 2 of driving element connects second switch inverse process circuit 3 with analog switch 74132, this second switch inverse process circuit is by being that HB2 high-frequency transformer and the high-voltage capacitance C that switching device is controlled forms with FET 840 through mainly for the output terminal of second crystal oscillating circuit; Through HB2 high-frequency transformer and the sinusoidal output circuit 4 coupling outputs of corresponding voltage frequency-selecting as second transformer, the sinusoidal output circuit of this voltage frequency-selecting mainly is made up of three groups of frequency-selecting electric capacity of relay control, and its output is still through waveform holding circuit 5.
High frequency peaks voltage table (test circuit) is as shown in Figure 4; By peak value sampling treatment conversion circuit 1-2 and output display device---voltage table 1-4 (PV and the shared demonstration of the real effective voltage) formation that sample circuit 1-1, real effective conversion chip 637 constitute, contain two amplifiers 385 in addition and constitute the warning circuit 1-3 that voltage ratios are amplified back output voltage superpressure warning.
High frequency real effective voltage table (test circuit) is as shown in Figure 5, and real effective amplifying circuit 2-3 and voltage display circuit 2-4 that real effective sample conversion treatment circuit 2-2, amplifier 0P07 and the peripheral components thereof that mainly is made up of sample circuit 2-1 and real effective conversion chip 1968 and peripheral components thereof constitutes constitute.
High frequency real effective voltage table and high frequency peaks voltage table respectively through waveform holding circuit 5 be connected through the sinusoidal output circuit 4,7 of the voltage frequency-selecting of transformer-coupled first and second high-frequency voltage generators.
High frequency real effective reometer (test circuit) is as shown in Figure 6; Comprise that two group relaies control preposition frequency selection circuit 3-1 and rearmounted frequency selection circuit 3-2 that the parallelly connected adjustable resistance of switching constitutes respectively; Carry out real effective conversion processing circuit 3-2 and current amplification circuit 3-3 at the forward and backward real effective conversion chip of putting between the frequency selection circuit 1968, rearmounted frequency selection circuit 3-4 serial connection electric current shows I.
The sampling that is of coupled connections of the output terminal of high frequency real effective reometer through mutual inductor and high-frequency voltage generator.
The high-frequency voltage generator circuit of present embodiment can carry out frequency according to the difference of test frequency to be selected, and when with after load is connected, can reflect voltage peak, real effective and the current parameters of test in real time.The experiment proof; The high-frequency resistance tester of present embodiment can satisfy the requirement of GB9706.4-2009 conscientiously; Output voltage near sinusoidal ripple can be applicable to high frequency surgical equipment central electrode contact impedance test and tests with surgical attachment insulating performance of cable high-frequency leakage current, test frequency wide ranges (from 200kHz to 5000kHz), can test contact impedance, 500kHz under the various frequencies; 1000kHz high-frequency leakage current etc., multiple functional.
Claims (5)
1. high-frequency test instrument comprises it is characterized in that the high-frequency voltage generator of output terminal external load: also comprise high frequency peaks voltage table, high frequency real effective voltage table, and high frequency real effective reometer;
Said high-frequency voltage generator mainly by in order to crystal oscillating circuit that the high_frequency sine wave signal takes place, in order to the plastic drive circuit that high_frequency sine wave signal shaping become square wave and supercharging amplify, in order to the amplification square-wave signal of shaping once more supercharging amplify the switch inverse process circuit of back output, in order to the amplifying signal of supercharging once more of selected input and convert the sinusoidal output circuit of voltage frequency-selecting of sine wave signal output to and provide the output voltage regulation circuit of electric energy to constitute;
Said high frequency peaks voltage table is made up of peak value sampling treatment conversion circuit and PV display device;
Said high frequency real effective voltage table is made up of real effective sample conversion treatment circuit, real effective amplifying circuit and voltage display device;
Said high frequency real effective reometer is made up of frequency-selecting sample circuit, real effective conversion processing circuit, current amplification circuit and electric current display device;
Said high frequency real effective voltage table is connected respectively with through the sinusoidal output circuit of the voltage frequency-selecting of transformer-coupled high-frequency voltage generator with the high frequency peaks voltage table;
Said high frequency real effective reometer is of coupled connections through the output terminal of mutual inductor and said high-frequency voltage generator.
2. high-frequency test instrument according to claim 1 is characterized in that: said high-frequency voltage generator comprises the first and second high frequency generation circuit that are connected with output voltage regulation circuit through change-over switch; It is first crystal oscillating circuit of core devices that the said first high frequency generation circuit contains with crystal oscillator and comparer, and the said second high frequency generation circuit contains by one group and is controlled by second crystal oscillating circuit that relay parallel connection crystal oscillator device constitutes respectively; The output terminal of said first and second crystal oscillating circuits connects the input end of the first and second switch inverse process circuits respectively through the plastic drive circuit that mainly is made up of shaping, amplifier device, the said first and second switch inverse process circuits are made up of first and second high-frequency transformers and the high-voltage capacitance of switching device control respectively; Through first and second transformers and the sinusoidal output circuit coupling of corresponding voltage frequency-selecting output, the sinusoidal output circuit of said voltage frequency-selecting mainly is made up of the frequency-selecting electric capacity of relay control the said first and second switch inverse process circuits respectively.
3. high-frequency test instrument according to claim 2 is characterized in that: said high-frequency voltage generator also contains as output terminal waveform holding circuit, and said waveform holding circuit mainly is made up of output resistance.
4. high-frequency test instrument according to claim 3 is characterized in that: said output voltage regulation circuit is made up of pressure regulator, transformer and the current rectifying and wave filtering circuit of serial connection.
5. high-frequency test instrument according to claim 4 is characterized in that: said high frequency peaks voltage table also contains by two amplifiers and constitutes the voltage superpressure warning circuit that voltage ratio is amplified back output.
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| CN201210256669.8A CN102788906B (en) | 2012-07-24 | 2012-07-24 | High-frequency impedance tester |
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| CN201210256669.8A CN102788906B (en) | 2012-07-24 | 2012-07-24 | High-frequency impedance tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445556A (en) * | 2014-08-21 | 2016-03-30 | 乐普（北京）医疗器械股份有限公司 | High-frequency isolation impedance detection method and system |
| CN107832172A (en) * | 2017-10-13 | 2018-03-23 | 南通腾业电子科技有限公司 | A kind of server program diagnostic device |
| CN117517785A (en) * | 2024-01-08 | 2024-02-06 | 深圳市瀚强科技股份有限公司 | Impedance detection circuit, impedance detection device, and impedance detection method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452198A (en) * | 1994-02-09 | 1995-09-19 | Sundstrand Corporation | Apparatus and method for A/C voltage sensing |
| US5497332A (en) * | 1993-10-01 | 1996-03-05 | Automatic Terminal Information Systems, Inc. | Method and apparatus for metering and monitoring AC generators |
| CN1489271A (en) * | 2003-05-06 | 2004-04-14 | 黄禹舜 | Electronic stepless regulating AC voltage-regulating and stabilizing apparatus |
| CN2684452Y (en) * | 2004-03-25 | 2005-03-09 | 南京航空航天大学 | Moulding board type static power converter for aviation |
| US20080116825A1 (en) * | 2006-11-21 | 2008-05-22 | Camille Descarries | Apparatus and Method for Detecting Failure in an Emergency Lighting Lamphead |
| CN201533255U (en) * | 2009-09-18 | 2010-07-21 | 陕西蓝海电气有限公司 | Static current transformer |
| US20100254515A1 (en) * | 2007-12-03 | 2010-10-07 | Hitachi Medical Corporation | Inverter device and x-ray high-voltage device using the inverter device |
| US20100289477A1 (en) * | 2006-05-26 | 2010-11-18 | Rohde & Schwarz Gmbh & Co. Kg | Measuring device and measuring method for measuring the envelope power and the mean-power value |
| CN102466741A (en) * | 2010-11-16 | 2012-05-23 | 上海盈高电子科技有限公司 | Programmable energy-saving electronic load |
| CN202870173U (en) * | 2012-07-24 | 2013-04-10 | 江苏省科学技术情报研究所 | High-frequency impedance tester |
-
2012
- 2012-07-24 CN CN201210256669.8A patent/CN102788906B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497332A (en) * | 1993-10-01 | 1996-03-05 | Automatic Terminal Information Systems, Inc. | Method and apparatus for metering and monitoring AC generators |
| US5452198A (en) * | 1994-02-09 | 1995-09-19 | Sundstrand Corporation | Apparatus and method for A/C voltage sensing |
| CN1489271A (en) * | 2003-05-06 | 2004-04-14 | 黄禹舜 | Electronic stepless regulating AC voltage-regulating and stabilizing apparatus |
| CN2684452Y (en) * | 2004-03-25 | 2005-03-09 | 南京航空航天大学 | Moulding board type static power converter for aviation |
| US20100289477A1 (en) * | 2006-05-26 | 2010-11-18 | Rohde & Schwarz Gmbh & Co. Kg | Measuring device and measuring method for measuring the envelope power and the mean-power value |
| US20080116825A1 (en) * | 2006-11-21 | 2008-05-22 | Camille Descarries | Apparatus and Method for Detecting Failure in an Emergency Lighting Lamphead |
| US20100254515A1 (en) * | 2007-12-03 | 2010-10-07 | Hitachi Medical Corporation | Inverter device and x-ray high-voltage device using the inverter device |
| CN201533255U (en) * | 2009-09-18 | 2010-07-21 | 陕西蓝海电气有限公司 | Static current transformer |
| CN102466741A (en) * | 2010-11-16 | 2012-05-23 | 上海盈高电子科技有限公司 | Programmable energy-saving electronic load |
| CN202870173U (en) * | 2012-07-24 | 2013-04-10 | 江苏省科学技术情报研究所 | High-frequency impedance tester |
Non-Patent Citations (5)
| Title |
|---|
| MARK T. BERNIUS等: "High-voltage,full-floating 10-MHz square-wave generator with phase control", 《REV.SCI.INSTRUM.》, vol. 60, no. 4, 30 April 1989 (1989-04-30), XP000036952, DOI: 10.1063/1.1141018 * |
| 刘吉超等: "频显式高频函数信号发生器的设计及其实现", 《新疆师范大学学报自然科学版》, vol. 27, no. 3, 30 September 2008 (2008-09-30) * |
| 彭文娟等: "可键控的高频信号发生器的设计", 《电子工程师》, vol. 32, no. 9, 30 September 2006 (2006-09-30) * |
| 王洪伟: "一种高精度lOkHz正弦波发生器", 《仪表技术》, no. 5, 31 December 1997 (1997-12-31) * |
| 赵一丁等: "基于谐振的大功率正弦波信号发生器", 《仪器仪表学报》, vol. 24, no. 4, 31 August 2003 (2003-08-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445556A (en) * | 2014-08-21 | 2016-03-30 | 乐普（北京）医疗器械股份有限公司 | High-frequency isolation impedance detection method and system |
| CN107832172A (en) * | 2017-10-13 | 2018-03-23 | 南通腾业电子科技有限公司 | A kind of server program diagnostic device |
| CN117517785A (en) * | 2024-01-08 | 2024-02-06 | 深圳市瀚强科技股份有限公司 | Impedance detection circuit, impedance detection device, and impedance detection method |
| CN117517785B (en) * | 2024-01-08 | 2024-04-23 | 深圳市瀚强科技股份有限公司 | Impedance detection circuit, impedance detection device, and impedance detection method |
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