CN106526303A - Volt-ampere characteristic test device and method of solid-state decoupling device - Google Patents
Volt-ampere characteristic test device and method of solid-state decoupling device Download PDFInfo
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- CN106526303A CN106526303A CN201610959953.XA CN201610959953A CN106526303A CN 106526303 A CN106526303 A CN 106526303A CN 201610959953 A CN201610959953 A CN 201610959953A CN 106526303 A CN106526303 A CN 106526303A
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- voltage
- test
- digital
- decoupling device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
Abstract
The present invention provides a volt-ampere characteristic test device and method of a solid-state decoupling device. The test device includes a direct-current voltage source, a digital direct-current voltmeter, a digital direct-current milliammeter, a signal processing unit, a test module and a shielding case; the digital direct-current voltmeter monitors voltage at the two ends of the solid-state decoupling device in real time; the digital direct-current milliammeter is connected in series into a loop to monitor current passing through the solid-state decoupling device; the signal processing unit receives test data and sends instructions to the direct-current voltage source through the test module; an upper computer sets a test program and test parameters and receives the data of the signal processing unit and sends instructions to the signal processing unit; the on threshold value of the solid-state decoupling device can be calculated according to the acquired value of the voltage at the two ends of the solid-state decoupling device and the value of the current passing through the solid-state decoupling device, a volt-ampere curve is drawn, and overvoltage protection voltage is determined. The device has the advantages of simple and easy use and convenient wiring, and can provide more accurate and detailed volt-ampere characteristic test data and automatically generate the volt-ampere characteristic curve.
Description
【Technical field】
The invention belongs to solid decoupling device test field, the C-V characteristic test of more particularly to a kind of solid decoupling device
Apparatus and method.
【Background technology】
Substantial amounts of high-grade transmission line of electricity is intersected with petroleum pipeline with electric railway or parallel, many regional petroleum pipelines
Road shares same public corridor with electrified circuit, can induce alternating voltage by Magnetic Induction on pipeline；Meanwhile, work as height
When pressure transmission line meets with thunderbolt or breaks down, also resistive interference can be produced to petroleum pipeline.If the alternating current of sensing
Height is pressed through, the normal operation of petroleum pipeline can be affected.Therefore the drainage mode that exchange must be taken to slow down, wherein solid-state uncoupling
Device is presently the most effective drain means.
Solid decoupling device is to separate direct current, a kind of facility of conducting exchange, is provided with a conducting threshold values, works as DC voltage
During more than the threshold values, direct current stops closes, and the facility automatically switches to short-circuit mode, there is provided DC over-voltage protection.Work as direct current
After the completion of overvoltage protection, cut-off DC mode is automatically switched to.When voltage be less than threshold voltage when, it is allowed to alternating current by and
DC current is not allowed to pass through.Generally, turn on threshold values generally to represent with A/B patterns, wherein A is negative prevention voltage, B
It is positive prevention voltage, standard configuration threshold values is -2V/+2V, is set also dependent on actual conditions.
C-V characteristic describes DC leakage-current level of the solid decoupling device under cut-off DC mode, and straight
Direct current through-current capability under stream overvoltage protection mode, is the important parameter of solid decoupling device, and necessary in type approval test
The parameter of test.In existing solid decoupling device experimental technique, C-V characteristic test is without battery of tests device and effectively test
Method, causes the test data degree of accuracy low and test efficiency is low.
In order to solve to realize the C-V characteristic test of solid decoupling device, The present invention gives a kind of device of test and side
Method.
【The content of the invention】
In order to solve in existing solid decoupling device experimental technique, volt-ampere characteristic test causes examination without battery of tests device
Test that the data precision is low and the low problem of test efficiency, the invention provides a kind of C-V characteristic test of solid decoupling device
Apparatus and method, it is possible to achieve the high accuracy for turning on threshold values, C-V characteristic, overvoltage protection voltage etc. of solid decoupling device is complete
Automatic measurement.
In order to reach object above, the present invention is adopted the following technical scheme that and is achieved：
A kind of C-V characteristic test device of solid decoupling device, including screening housing, test module and test circuit,
Described test circuit, is arranged in screening housing, and which includes Digital direct current voltage meter, the direct current of controllable output
Potential source, digital DC milliammeter and signal processing unit, direct voltage source two ends respectively with the solid-state being arranged on outside screening housing
The two ends connection of decoupling device, digital DC milliammeter is source-series with DC voltage, Digital direct current voltage meter and direct voltage source
It is in parallel；
Described signal processing unit is connected with Digital direct current voltage meter, direct voltage source and digital DC milliammeter respectively
Connect；Signal processing unit receives the measurement data of Digital direct current voltage meter and digital DC milliammeter and is transferred to host computer, together
When receive host computer pressure regulation instruction again by pressure regulation instruction be transferred to direct voltage source；
Described test module, is arranged on outside screening housing, and test module is connected with signal processing unit.
As a further improvement on the present invention, also including power module and chassics earth terminal,
Described power module is arranged on outside screening housing, provides electric energy to the electrical equipment of test circuit；
Described chassics earth terminal connection the earth, provides safeguard protection and work ground potential to screening housing.
As a further improvement on the present invention, BNC output ports, the electricity of direct voltage source are set on described screening housing
Pressure is applied on two terminals of solid decoupling device by BNC output ports.
The adjustable extent of described direct voltage source is 0～10V.
Described host computer includes：
Parameter setting module, for arranging voltage tester scope, arranging voltage test points, arrange nominal conduction threshold；
Instrument controlling module, for driving Digital direct current voltage meter and digital DC milliammeter so that drive digital DC
Data exchange is completed between voltmeter and digital DC milliammeter and signal processing unit, the setting to Digital direct current voltage meter,
And original record and survey report are completed according to the data for collecting；
Parameter determination module, it is bent for drawing C-V characteristic according to the data of Digital direct current voltage meter and digital milliammeter
Line, calculates conduction threshold, according to the nominal conduction threshold that test module is arranged, judges whether test passes through.
A kind of method of testing of the C-V characteristic test device based on solid decoupling device, comprises the following steps：
1) nominal conduction threshold, voltage tester scope are arranged by test module and chooses multiple test points, and output refers to
Signal processing unit, signal processing unit is made to transmit instructions to direct voltage source, voltage of the direct voltage source according to setting
Voltage required for value output is applied to the two ends of solid decoupling device；
2) Digital direct current voltage meter monitoring solid decoupling device both end voltage, the monitoring of digital DC milliammeter are gone by solid-state
The electric current of coupler；The voltage and current data for measuring are sent to test module by signal processing unit；
3) test module is analyzed to voltage and current data, and acquisition corresponds to the burning voltage of test point, current value simultaneously
Storage；
4) test module draws volt-ampere curve according to the logical relation of voltage and current data, is calculated by volt-ampere curve and is turned on
Threshold value, determine overvoltage protection voltage, actual measurement conduction threshold if meeting error requirements, is tested compared with nominal conduction threshold
Pass through.
Further, step 3) specifically include：
It is stable whether the magnitude of voltage that test module analysis is measured reaches, if reach stablizing, then judges whether to meet test point
The error range of voltage, if not up to error requirements, pressure regulation instruction is sent to direct current by signal processing unit by test module
Voltage source, continues to adjust voltage to required value；Now the current data of solid decoupling device is passed through letter by digital DC milliammeter
Number processing unit is sent to the test module of host computer, and test module is analyzed to current data whether the current fluctuation reaches
Stable, if the current value reaches stablizing, voltage and current value now is stored as test module the test data of the test point.
Further, it is voltage pulsation less than 0.01V/s that voltage reaches stable criterion, the error range of voltage for ±
3%；Electric current reaches stable criterion and is less than 0.01mA/s for current fluctuation.
The invention has the advantages that：
The test device of the present invention is one and has screening housing, voltage output port, the device of COM1 and upper
The test apparatus of machine composition, two end of solid decoupling device need to be only connected to the corresponding interface of test device at the trial, you can logical
Cross software control to be tested, shorten the test period, improve test efficiency.Magnitude of voltage output institute of the direct voltage source according to setting
Required voltage is applied to the two ends of solid decoupling device；Digital direct current voltage meter monitors solid decoupling device both end voltage, number
Word DC milliammeter monitors the electric current by solid decoupling device；The voltage and current data for measuring are passed by signal processing unit
It is sent to test module；Signal processing unit receives the measurement data of Digital direct current voltage meter and digital DC milliammeter and is transferred to
Host computer, while pressure regulation instruction is transferred to direct voltage source by pressure regulation instruction again that receive host computer；By host computer and test
Module can realize that the high accuracy to output voltage is controlled, and realize all automatic measurement.This device is simple to operate easy-to-use, wiring side
Just, more full and accurate accurate volt-ampere characteristic test data can be provided, and VA characteristic curve can be automatically generated.
The control method of the present invention be by arranging nominal conduction threshold, voltage tester scope and choosing multiple test points,
Then carry out testing voltage, the current value of solid decoupling device, the voltage and current data for measuring are passed by signal processing unit
Test module is sent to, and test module is drawn volt-ampere curve according to logical relation, conduction threshold, overvoltage protection calculated by volt-ampere curve
Voltage.And the actual measurement conduction threshold is compared with the nominal conduction threshold of nameplate, if error is in the range of ± 10%, then it is assumed that examination
Test and pass through.The setting of test mission, control and detection are completed by man-machine interactive system, test efficiency is improve, is reduced people
For mistake
Further, the voltage of collection of the invention, circuit data have been finally given stable by analyzing judgement and debugging
Magnitude of voltage and current value, and conduction threshold calculating is carried out according to stable data, it is ensured that the true and reliability of test data.
【Description of the drawings】
Fig. 1 is the structural representation of solid decoupling device Testing Instrument for Volt-ampere Characteristic of the present invention；
Block diagrams of the Fig. 2 for test module；
Wherein：1- Digital direct current voltage meters；The direct voltage source of the controllable outputs of 2-；3- digital DC milliammeters；4- signals
Processing unit；5-BNC output ports；6- screening housings；7- power modules；8- chassics earth terminals；9- test modules；10- is solid
State decoupling device.
【Specific embodiment】
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, but the invention is not restricted to the enforcement
Example.In order that the public has to the present invention thoroughly understanding, concrete details is described in detail in present invention below preferably applies example.
As shown in figure 1, the solid decoupling device C-V characteristic test device of the present invention, including Digital direct current voltage meter 1, can
The direct voltage source 2 of control output, digital DC milliammeter 3, signal processing unit 4, BNC output ports 5, screening housing 6, power supply
Module 7, chassics earth terminal 8, host computer and test module 9.
Specifically, the direct voltage source 2 of controllable output is fixed with screening housing 6, then is concatenated digital DC milliampere
Table 3 is used for the DC current for measuring solid decoupling device, then in parallel with Digital direct current voltage meter 1 to be used to measure solid-state uncoupling
The DC voltage at 10 two ends of device, then 5 output voltage of Jing BNC (coaxial) output port, the output voltage are connect by coaxial cable
To the two ends of solid decoupling device 10, power module 7 is powered to 6 interior instrument of screening housing, and chassics earth terminal 8 is shield machine
Shell 6 provides ground protection, and signal processing unit 4 is used for the measurement number for receiving Digital direct current voltage meter 1 and digital DC milliammeter 3
According to and by communication port transfers to host computer, while receive host computer pressure regulation instruction again by pressure regulation instruct be transferred to direct current
Potential source 2.
The direct voltage source 2 is controlled to make which adjustable by certain exportable amplitude of step-length regulation voltage by host computer
0～10V DC voltages, the DC voltage provide DC voltage letter to 10 two ends of solid decoupling device by BNC output ports 5
Number；1 real-time monitoring solid decoupling device of the Digital direct current voltage meter, 10 both end voltage, the digital DC milliammeter 3 are connected
Enter loop and implement electric current of the monitoring by solid decoupling device 10, the signal processing unit 4 receives Digital direct current voltage meter, number
The test data of word DC milliammeter Jing test modules 9 send instructions to direct voltage source 2, host computer arrange test program and
Test parameter, the Data Concurrent of receipt signal processing unit 4 send instruction to signal processing unit 4.The signal processing unit 4 is solid
Surely it is packaged in the casing 6 with function of shielding.Survey Software according to the 10 both end voltage value of solid decoupling device that collects and
The current value for flowing through solid decoupling device calculates its conducting threshold values, draws volt-ampere curve, determines overvoltage protection voltage, the device reality
The high accuracy all automatic measurement for turning on threshold values, C-V characteristic, overvoltage protection voltage etc. of existing solid decoupling device.
The concrete operating principle of the present invention is as follows：
Power module 7 supplies the power supply of electrical equipment, and chassics earth terminal 8 is connected to the earth and provides safeguard protection and work
Ground potential.Nominal conduction threshold on 10 nameplate of solid decoupling device and the voltage tester scope for requiring are input into into the survey of host computer
Die trial block 9, test module test module 9 averagely choose ten test voltage points according to the scope for arranging, and test module 9 is by logical
To signal processing unit 4, signal processing unit 4 transmits instructions to direct voltage source 2, direct voltage source to letter port output order
2 voltages according to required for the magnitude of voltage exports test point of setting, the voltage are applied to solid by BNC (coaxial) output port 5
On two terminals of state decoupling device 10.The measurement test point voltage of Digital direct current voltage meter 1 simultaneously will by signal processing unit 4
Test information back host computer, the test module 9 of host computer are analyzed to voltage data.
A kind of to be used for solid decoupling device C-V characteristic method of testing, the output DC voltage of direct voltage source 2 is applied to solid
10 two ends of state decoupling device, monitoring 10 both end voltage of solid decoupling device of Digital direct current voltage meter 1, digital DC milliammeter 3 are supervised
The electric current by solid decoupling device 10 is surveyed, the voltage and current data for measuring are sent to test mould by signal processing unit 4
Block 9, test module 9 draw volt-ampere curve according to logical relation, calculate conduction threshold, overvoltage protection voltage by volt-ampere curve.
During test, the nominal conduction threshold on 10 nameplate of solid decoupling device and the voltage tester scope for requiring input are surveyed
Die trial block 9, test module 9 choose 10 test points according to set voltage tester scope, averagely, and the volt-ampere of each test point is special
Property data are determined by following methods：Think that voltage reaches if voltage pulsation is less than 0.01V/s stable, whether detect the value
Meet tolerance ± 3% of test point voltage, if the not up to requirement of test point voltage tolerance ± 3%, test module 9 passes through signal
Pressure regulation instruction is sent to direct voltage source 2 by processing unit 4, continues to adjust voltage to required value, when the voltage of test point voltage
After the tolerance of undulating value and test point voltage meets and requires, now digital DC milliammeter 3 is by the electric current number of solid decoupling device
According to the test module 9 that host computer is sent to by signal processing unit 4, test module 9 is analyzed to current data, current wave
Dynamic then to think that electric current reaches stably less than 0.01mA/s, voltage and current value now is stored as the test by test module 9
The test data of point.After the completion of all of test point test, test module 9 draws VA characteristic curve, calculates actual measurement conducting
Threshold value, and preserve to host computer, the actual measurement conduction threshold is compared by test module 9 with the nominal conduction threshold of nameplate, if error
In the range of ± 10%, then it is assumed that test passes through.After off-test, software automatically generates C-V characteristic data and C-V characteristic is bent
Line, test are completed.
Fig. 2 gives test module 9 block diagram, by the module, can complete parameter setting, control measurement process, extract and survey
Examination data, and data processing is carried out as required, export original record.Test module 9 includes：
The major function of parameter setting module 11 is to arrange voltage tester scope, arrange voltage test points, arrange and nominally lead
Logical threshold value, to choose the range ability of suitable Digital direct current voltage meter 1, quickly and accurately test data.
The major function of instrument controlling module 12 is to drive Digital direct current voltage meter 1 and digital DC milliammeter 3 so that it
Complete data exchange between signal processing unit 4；Setting of the test module 9 to Digital direct current voltage meter 1；Test module 9
Data according to collecting complete original record and survey report.
Parameter determination module 13 draws VA characteristic curve according to the data of Digital direct current voltage meter 1 and digital milliammeter 3,
Conduction threshold is calculated, according to the nominal conduction threshold that test module 9 is arranged, judges whether test passes through.
The solid decoupling device Testing Instrument for Volt-ampere Characteristic of the present invention is multiple functional, and simple to operate easy-to-use, easy-to-connect can be carried
For more full and accurate accurate volt-ampere characteristic test data, and VA characteristic curve can be automatically generated, be completed by man-machine interactive system
The setting of test mission, control and detection, improve test efficiency, reduce human error.
More than, only presently preferred embodiments of the present invention is not limited only to the practical range of the present invention, all according to present invention invention
Equivalence changes and modification that the content of scope is done, all should be the technology category of the present invention.
Claims (8)
1. the C-V characteristic test device of a kind of solid decoupling device, it is characterised in that：Including screening housing (6), test module
(9) and test circuit,
Described test circuit, is arranged in screening housing (6), and which includes Digital direct current voltage meter (1), the direct current of controllable output
Voltage source (2), digital DC milliammeter (3) and signal processing unit (4), direct voltage source (2) two ends respectively be arranged on screen
The two ends connection of casing (6) solid decoupling device (10) outward is covered, digital DC milliammeter (3) is connected with direct voltage source (2),
Digital direct current voltage meter (1) is in parallel with direct voltage source (2)；
Described signal processing unit (4) respectively with Digital direct current voltage meter (1), direct voltage source (2) and digital DC milliampere
Table (3) connects；The measurement data of signal processing unit (4) reception Digital direct current voltage meter (1) and digital DC milliammeter (3) is simultaneously
Host computer is transferred to, while pressure regulation instruction is transferred to direct voltage source (2) by pressure regulation instruction again that receive host computer；
Described test module (9), is arranged on screening housing (6) outward, and test module (9) is connected with signal processing unit (4).
2. the C-V characteristic test device of a kind of solid decoupling device according to claim 1, it is characterised in that：Also include
Power module (7) and chassics earth terminal (8),
Described power module (7) is arranged on screening housing (6) outward, provides electric energy to the electrical equipment of test circuit；
Described chassics earth terminal (8) connection the earth, provides safeguard protection and work ground potential to screening housing (6).
3. the C-V characteristic test device of a kind of solid decoupling device according to claim 1, it is characterised in that：Described
BNC output ports (5) are set on screening housing (6), and the voltage of direct voltage source (2) is applied to admittedly by BNC output ports (5)
On two terminals of state decoupling device (10).
4. the C-V characteristic test device of a kind of solid decoupling device according to claim 1, it is characterised in that：Described
The adjustable extent of direct voltage source (2) is 0～10V.
5. the C-V characteristic test device of a kind of solid decoupling device according to claim 1, it is characterised in that：Described
Host computer includes：
Parameter setting module (11), for arranging voltage tester scope, arranging voltage test points, arrange nominal conduction threshold；
Instrument controlling module (12), for driving Digital direct current voltage meter (1) and digital DC milliammeter (3) so that driving number
Data exchange is completed between word D.C. voltmeter (1) and digital DC milliammeter (3) and signal processing unit (4), to digital direct
The setting of ampere-voltage meter (1), and original record and survey report are completed according to the data for collecting；
Parameter determination module (13), it is special for drawing volt-ampere according to the data of Digital direct current voltage meter (1) and digital milliammeter (3)
Linearity curve, calculates conduction threshold, according to the nominal conduction threshold that test module (9) is arranged, judges whether test passes through.
6. a kind of survey of the C-V characteristic test device of the solid decoupling device based on described in 1 to 5 any one of claims
Method for testing, it is characterised in that comprise the following steps：
1) nominal conduction threshold, voltage tester scope are arranged by test module (9) and chooses multiple test points, and output order
To signal processing unit (4), signal processing unit (4) transmits instructions to direct voltage source (2), direct voltage source (2) basis
Voltage required for the magnitude of voltage output of setting is applied to the two ends of solid decoupling device (10)；
2) Digital direct current voltage meter (1) monitoring solid decoupling device (10) both end voltage, digital DC milliammeter (3) monitoring pass through
The electric current of solid decoupling device (10)；The voltage and current data for measuring are sent to test module by signal processing unit (4)
(9)；
3) test module (9) is analyzed to voltage and current data, is obtained the correspondingly burning voltage of test point, current value and is deposited
Storage；
4) test module (9) draws volt-ampere curve according to the logical relation of voltage and current data, is calculated by volt-ampere curve and is turned on
Threshold value, determine overvoltage protection voltage, actual measurement conduction threshold if meeting error requirements, is tested compared with nominal conduction threshold
Pass through.
7. the method for testing of the C-V characteristic test device of solid decoupling device according to claim 6, it is characterised in that
Step 3) specifically include：
It is stable whether the magnitude of voltage that test module (9) analysis is measured reaches, if reach stablizing, then judges whether to meet test point electricity
The error range of pressure, if not up to error requirements, pressure regulation instruction is sent to by test module (9) by signal processing unit (4)
Direct voltage source (2), continues to adjust voltage to required value；Now digital DC milliammeter (3) is by solid decoupling device (10)
Current data is sent to the test module (9) of host computer by signal processing unit (4), and test module (9) is entered to current data
Whether row is analyzed the current fluctuation and reaches stable, if the current value reaches stable, test module (9) is by voltage and current now
Value is stored as the test data of the test point.
8. the method for testing of the C-V characteristic test device of solid decoupling device according to claim 7, it is characterised in that
Voltage reaches stable criterion and is less than 0.01V/s for voltage pulsation, and the error range of voltage is ± 3%；Electric current reaches stable
Criterion be current fluctuation be less than 0.01mA/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610959953.XA CN106526303B (en) | 2016-10-27 | 2016-10-27 | A kind of the C-V characteristic test device and method of solid decoupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610959953.XA CN106526303B (en) | 2016-10-27 | 2016-10-27 | A kind of the C-V characteristic test device and method of solid decoupling device |
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| Publication Number | Publication Date |
|---|---|
| CN106526303A true CN106526303A (en) | 2017-03-22 |
| CN106526303B CN106526303B (en) | 2019-11-01 |
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| CN201610959953.XA Active CN106526303B (en) | 2016-10-27 | 2016-10-27 | A kind of the C-V characteristic test device and method of solid decoupling device |
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Cited By (1)
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| CN113960456A (en) * | 2021-12-20 | 2022-01-21 | 深圳市永达电子信息股份有限公司 | Automatic detection device and method for micro-damage of circuit interface |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106526303B (en) | 2019-11-01 |
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