CN105737880A - Checking comparator and using method thereof - Google Patents
Checking comparator and using method thereof Download PDFInfo
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- CN105737880A CN105737880A CN201610144210.7A CN201610144210A CN105737880A CN 105737880 A CN105737880 A CN 105737880A CN 201610144210 A CN201610144210 A CN 201610144210A CN 105737880 A CN105737880 A CN 105737880A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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Abstract
The invention discloses a checking comparator. The checking comparator comprises a housing, multiple groups of test ports arranged on the surface of the housing, a power supply, a plurality of constant voltage modules, a plurality of constant current modules, a plurality of resistor members and a frequency signal generator. The test ports comprise a voltage test port, a current test port, a resistor test port, a frequency test port and a grounding port; the constant voltage module is connected between the power supply and the voltage test port in series; the constant current module is serially connected between the power supply and the current test port; the resistor member is electrically connected to the resistor test port and is electrically connected to the grounding port; the frequency signal generator is serially connected between the power supply and the frequency test port. Compared with the prior art, the checking comparator is simple in structure, easy to carry, applicable to the production field to perform online comparison on the working state of the metering tool, and good in reliability. The invention also provides a method for using the checking comparator.
Description
Technical field
The present invention relates to field of measuring techniques, be specifically related to a kind of verification comparative device and using method thereof.
Background technology
For the measurement instrument for in-site measurement, owing to working condition requires higher, Site Detection is difficult to meet its environmental condition requirement, measures the additive error produced and is difficult to avoid that.Particularly having the measurement instrument of high accuracy, environmental condition is even more important.Measurement instrument is in measurement process, it is difficult to determine whether there is the obvious mistake because the impact of field environmental condition causes measurement data to produce.At present, for the calibrating of measurement instrument, calibration operation, enterprises and institutions and research institution etc. require that scene carries out more and more, particularly for the measurement instrument of process detection and instrument and meter on production line, by some critical technical parameters of comparison measurement instrument, working experience in conjunction with testing staff, can effective evaluation and judge standard of measurement or the current duty of device, to realize measurement mistake in time, avoid the conclusion that makes mistake, reduce measurement risk, raising measurement confidence level etc. all significant.
Therefore, it is necessary to provide a kind of new verification comparative device to solve above-mentioned technical problem.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical problem, it is provided that a kind of for production scene, the duty of standard of measurement is carried out on-line checking comparison, the verification comparative device of high reliability.
nullFor solving above-mentioned technical problem，The present invention provides a kind of and verifies comparative device，Including the housing with receiving space、Many group test ports、Power supply、The constant voltage module of multiple different output valves、The constant flow module of multiple different output valves、The resistive element of multiple different resistances and the frequency of signal generator of multi-frequency output，Described test port is arranged at intervals at described surface of shell，Described test port includes voltage tester port、Testing current port、Resistance test port、Frequency test port and grounding ports，Multiple described constant voltage modules are series between described power supply and described voltage tester port respectively，Multiple described constant flow modules are series between described power supply and described testing current port respectively，Multiple described resistive elements electrically connect with described resistance test port respectively and electrically connect with described grounding ports simultaneously，Described frequency of signal generator is series between described power supply and described frequency test port.
Preferably, described verification comparative device also includes being positioned at the spare module of described receiving space and being arranged at the standby test port of described surface of shell, and described spare module electrically connects with described standby test port.
The present invention also provides for the using method of a kind of described verification comparative device, comprises the steps:
Thering is provided described verification comparative device and measurement instrument to be compared, described measurement instrument to be compared includes test probe；
Connecting test loop, selects the test port of induction signal and confirms its standard output value, and with to the described test port of induction signal, the described test probe of described measurement instrument to be compared is electrically connected to form test loop respectively；
Output test value, connects the power supply of described verification comparative device, and the test value of described test loop is exported and shows by described measurement instrument to be compared；
Contrast judges, the described test value export described measurement instrument to be compared and the standard output value of the described test port of selection contrast, judge the duty of described measurement instrument to be compared, if the difference between described test value and described standard output value is less than expected value, then described measurement instrument to be compared is working properly, otherwise operation irregularity.
Preferably, the testing standard value of described voltage tester port output includes 2.5V and 5.0V.
Preferably, the testing standard value of described testing current port output includes 4.0mA and 18.88mA.
Preferably, the testing standard resistance value of described resistance test port output includes 100 Ω, 10k Ω and 100k Ω.
Preferably, the testing standard value of described frequency test port output includes 244.15Hz, 31.25kHz and 250kHz.
Compared with correlation technique, described verification comparative device provided by the invention by arranging the test port of multiple preset standard output valve in described verification comparative device, the standard output value of each described test port is measured with measurement instrument to be compared, the each described standard output value preset by described verification comparative device again and the test value of described measurement instrument to be compared contrast, thus judging that whether the duty of described measurement instrument to be compared is normal, the operation of described verification comparative device and using method are simple.By described constant voltage module and described constant flow module voltage stabilizing and current stabilization, making described standard output value accurately and securely property good, described verification comparative device also includes multiple standby test port, can multiple measurement instrument to be compared be detected, its scalability is good, uses scope wide.
Accompanying drawing explanation
Fig. 1 is the functional block diagram that the present invention verifies comparative device；
Fig. 2 is the perspective view that the present invention verifies comparative device；
Fig. 3 is the flow chart that the present invention verifies comparative device using method.
Detailed description of the invention
Below in conjunction with drawings and embodiments, the invention will be further described.
Referring to Fig. 1 and Fig. 2, wherein, Fig. 1 is the functional block diagram that the present invention verifies comparative device, and Fig. 2 is the perspective view that the present invention verifies comparative device.Described verification comparative device 1 includes having the housing 11 of receiving space (not shown), power supply 12, the constant voltage module 13 of multiple different output valves, the constant flow module 14 of multiple different output valves, multiple different resistive elements 15 of resistance, the frequency of signal generator 16 of multi-frequency output, spare module 17 and many group test ports 18.Described power supply 12, described constant voltage module 13, described constant flow module 14, described resistive element 15, described frequency of signal generator 16 and described spare module 17 are respectively arranged in described housing 11.Described constant voltage module 13 and described constant flow module 14 electrically connect with described power supply 12 respectively.Described test port 18 is arranged at intervals at described housing 11 surface.
Described test port 18 includes voltage tester port 181, testing current port 182, resistance test port 183, frequency test port 184, grounding ports 185 and standby test port 186.In present embodiment, described voltage tester port 181 is four, and voltage tester port 181 described in each two forms a power supply test port set.Described testing current port 182 is four, and testing current port 182 described in each two forms a testing current port set.Described grounding ports 185 includes the first grounding ports 1851 and the second grounding ports 1852, and described first grounding ports 1851 electrically connects with described resistance test port 183, and described second grounding ports 1852 electrically connects with described frequency test port 184.Described resistance test port 183 is three, and each described resistance test port 183 forms one group of resistance test port set with described first grounding ports 1851.Described frequency test port 184 is three, and each described frequency test port 184 and described second grounding ports 1852 form a class frequency test port set.
Multiple described constant voltage modules 13 are series between described power supply 12 and described voltage tester port 181 respectively, described constant voltage module 13 is for converting the voltage of described power supply 12 to stable magnitude of voltage, and making the magnitude of voltage that described voltage tester port 181 exports is stable standard value.In present embodiment, described constant voltage module 13 is two, standard value respectively 2.5V and the 5V of the voltage output of two described constant voltage modules 13, namely the testing standard value of described voltage tester port 181 output is 2.5V and 5V, the magnitude of voltage scalable of described constant voltage module 13 output simultaneously, the exportable magnitude of voltage meeting other test requests.
Multiple described constant flow modules 14 are series between described power supply 12 and described testing current port 182 respectively, described constant flow module 14 is for converting the electric current of described power supply 12 to stable current value, and making the output current value of described testing current port 182 is stable standard value.In present embodiment, described constant flow module 14 is two, standard value respectively 4mA and the 18.88mA of the electric current output of two described constant flow modules 14, namely the testing standard value of described testing current port 182 output is 4mA and 18.88mA, the current value scalable of described constant flow module 14 output simultaneously, the exportable current value meeting other test requests, makes described verification comparative device 1 use scope wide.
Multiple described resistance test ports 183 electrically connect with described resistive element 15, and described resistive element 15 includes multiple resistance with different resistance.In present embodiment, the quantity of described resistance is three, its resistance is 100 Ω, 10k Ω and 100k Ω respectively, namely the testing standard value of described resistance test port 183 output is 100 Ω, 10k Ω and 100k Ω, the resistance that simultaneously can change described resistance regulates the resistance value of described resistance test port 183 test, described resistance adopts precision resistance, makes described resistance value accurately and reliably.
Described frequency test port 184 electrically connects with described frequency of signal generator 16.In present embodiment, the frequency of described frequency of signal generator 16 output is 244.15Hz, 31.25kHz and 250kHz, and namely the testing standard value of described frequency test port 184 output includes 244.15Hz, 31.25kHz and 250kHz.The frequency of described frequency of signal generator 16 output can also be 4.0MHz, 3.90kHz, and the degree of stability of described frequency is 1 × 10-5, the frequency stability of described frequency of signal generator 16 and good reliability.
When described standby test port 186 is for other measurement instruments of comparison, the type of parameter can be detected according to described measurement instrument, corresponding spare module 17 is set in the receiving space of described housing 11, described spare module 17 electrically connects with described standby test port 186, make its scalability good, highly versatile.Described verification comparative device simple in construction, it is simple to carry.
Incorporated by reference to reference to Fig. 3, verify the flow chart of comparative device using method for the present invention.Based on described verification comparative device, also provide for the using method of a kind of described verification comparative device, comprise the steps:
Step S1, it is provided that described verification comparative device 1 and measurement instrument (not shown) to be compared, described measurement instrument to be compared includes test probe；
Step S2, connecting test loop, select the test port of induction signal and confirm its standard output value, the described test probe of described measurement instrument to be compared is electrically connected to form test loop with to the described test port 18 of induction signal respectively；
Concrete, when voltage parameter measured by described measurement instrument to be compared, the voltage tester port set being made up of voltage tester port 181 described in two that measurement range selection according to described measurement instrument to be compared is corresponding, voltage tester port 181 described in be respectively connected to the described test probe of described measurement instrument to be compared to choose two forms test loop.
When current parameters measured by described measurement instrument to be compared, the testing current port set being made up of testing current port 182 described in two that measurement range selection according to described measurement instrument to be compared is corresponding, is respectively connected to testing current port 182 described in two by the test probe of described measurement instrument to be compared and forms test loop.
When resistance parameter measured by described measurement instrument to be compared, the resistance test port 183 that measurement range selection according to described measurement instrument to be compared is corresponding, test probe described in the one of described measurement instrument to be compared is accessed selected described resistance test port 183, and its another described test probe accesses described first grounding ports 1851 and forms test loop.
When frequency parameter measured by described measurement instrument to be compared, the frequency test port 184 that measurement range selection according to described measurement instrument to be compared is corresponding, test probe described in the one of described measurement instrument to be compared is accessed selected described frequency test port 184, and its another described test probe accesses described second grounding ports 1852 and forms test loop.
Step S3, exports test value, connects the power supply 12 of described verification comparative device 1, and the test value of described test loop is exported and shows by described measurement instrument to be compared；
In this step, described measurement instrument to be compared forms test loop and the parameter corresponding with loop is shown in display with described test port 18, in order to tester reads data.
Step S4, contrast judges, the described test value export described measurement instrument to be compared and the standard output value of the described test port 18 of selection contrast, it is judged that the duty of described measurement instrument to be compared.If the difference between described test value and described standard output value is less than expected value, then described measurement instrument to be compared is working properly, otherwise operation irregularity.
In this step, the standard output value default with described verification comparative device 1 by the test value recorded by described measurement instrument to be compared contrasts, when described test value is equal with the standard output value preset or is in the scope of allowable error, then described measurement instrument duty to be compared is normal.Otherwise, then described measurement instrument duty to be compared is abnormal, and its data recorded also exist mistake.Wherein, when voltage parameter measured by described measurement instrument to be compared, its allowable error is less than or equal to ± 0.1%.When current parameters measured by described measurement instrument to be compared, its allowable error is less than or equal to ± 0.1%.When resistance parameter measured by described measurement instrument to be compared, its allowable error is less than or equal to ± 0.2%.When frequency parameter measured by described measurement instrument to be compared, its allowable error is less than or equal to ± 0.01%.
Described measurement instrument to be compared is tested the relevant parameter having preset standard value in described comparative device by said method, the standard output value of test value Yu described test port is contrasted, thus judging whether described measurement instrument to be compared is in normal duty.This is simple to operate, and cost is low, quickly the duty of measurement instrument to be compared can be carried out on-line checking in production scene, is effectively improved reliability and accuracy that measurement instrument is measured.
Compared with correlation technique, the present invention verifies comparative device by arranging the test port of multiple preset standard output valve in described verification comparative device, the standard output value of each described test port is measured with measurement instrument to be compared, the each described standard output value preset by described verification comparative device again and the test value of described measurement instrument to be compared contrast, thus judging that whether the duty of described measurement instrument to be compared is normal, the operation of described verification comparative device and determination methods are simple.By described constant voltage module and described constant flow module voltage stabilizing and current stabilization, making described standard output value accurately and securely property good, described verification comparative device also includes multiple standby test port, can multiple measurement instrument to be compared be detected, its scalability is good, uses scope wide.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, all in like manner include in the scope of patent protection of the present invention.
Claims (7)
- null1. verify comparative device for one kind，It is characterized in that，Including the housing with receiving space、Many group test ports、Power supply、The constant voltage module of multiple different output valves、The constant flow module of multiple different output valves、The resistive element of multiple different resistances and the frequency of signal generator of multi-frequency output，Described test port is arranged at intervals at described surface of shell，Described test port includes voltage tester port、Testing current port、Resistance test port、Frequency test port and grounding ports，Multiple described constant voltage modules are series between described power supply and described voltage tester port respectively，Multiple described constant flow modules are series between described power supply and described testing current port respectively，Multiple described resistive elements electrically connect with described resistance test port respectively and electrically connect with described grounding ports simultaneously，Described frequency of signal generator is series between described power supply and described frequency test port.
- 2. verification comparative device according to claim 1, it is characterized in that, described verification comparative device also includes being positioned at the spare module of described receiving space and being arranged at the standby test port of described surface of shell, and described spare module electrically connects with described standby test port.
- 3. the using method of a verification comparative device as claimed in claim 1, it is characterised in that comprise the steps:Thering is provided described verification comparative device and measurement instrument to be compared, described measurement instrument to be compared includes test probe；Connecting test loop, selects the test port of induction signal and confirms its standard output value, and with to the described test port of induction signal, the described test probe of described measurement instrument to be compared is electrically connected to form test loop respectively；Output test value, connects the power supply of described verification comparative device, and the test value of described test loop is exported and shows by described measurement instrument to be compared；Contrast judges, the described test value export described measurement instrument to be compared and the standard output value of the described test port of selection contrast, judge the duty of described measurement instrument to be compared, if the difference between described test value and described standard output value is less than expected value, then described measurement instrument to be compared is working properly, otherwise operation irregularity.
- 4. the using method of verification comparative device according to claim 3, it is characterised in that the testing standard value of described voltage tester port output includes 2.5V and 5.0V.
- 5. the using method of verification comparative device according to claim 3, it is characterised in that the testing standard value of described testing current port output includes 4.0mA and 18.88mA.
- 6. the using method of verification comparative device according to claim 3, it is characterised in that the testing standard resistance value of described resistance test port output includes 100 Ω, 10k Ω and 100k Ω.
- 7. the using method of verification comparative device according to claim 3, it is characterised in that the testing standard value of described frequency test port output includes 244.15Hz, 31.25kHz and 250kHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610144210.7A CN105737880A (en) | 2016-03-14 | 2016-03-14 | Checking comparator and using method thereof |
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| CN201610144210.7A CN105737880A (en) | 2016-03-14 | 2016-03-14 | Checking comparator and using method thereof |
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| WO2006116767A1 (en) * | 2005-04-27 | 2006-11-02 | Aehr Test Systems | Apparatus for testing electronic devices |
| CN102620764A (en) * | 2012-04-10 | 2012-08-01 | 中国人民解放军海军航空工程学院 | Metrological verification device for automatic test system |
| CN202471797U (en) * | 2012-02-09 | 2012-10-03 | 郑州万特电气有限公司 | Universal phase volt-ampere meter |
| CN204788450U (en) * | 2015-07-20 | 2015-11-18 | 河南省计量科学研究院 | Standard device of industrial safety in -line meter check gauge calibration usefulness |
| CN204855776U (en) * | 2015-06-19 | 2015-12-09 | 国网天津市电力公司 | A 0. 05 grade of miniature standard electric energy meter for passing through mutual -inductor is checied during inserting measurement of formula three -phase intelligent ammeter electric energy |
| CN105258718A (en) * | 2015-09-25 | 2016-01-20 | 中国人民解放军防空兵学院 | Comprehensive tester metering detection system, adapter, and metering test platform |
-
2016
- 2016-03-14 CN CN201610144210.7A patent/CN105737880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006116767A1 (en) * | 2005-04-27 | 2006-11-02 | Aehr Test Systems | Apparatus for testing electronic devices |
| CN202471797U (en) * | 2012-02-09 | 2012-10-03 | 郑州万特电气有限公司 | Universal phase volt-ampere meter |
| CN102620764A (en) * | 2012-04-10 | 2012-08-01 | 中国人民解放军海军航空工程学院 | Metrological verification device for automatic test system |
| CN204855776U (en) * | 2015-06-19 | 2015-12-09 | 国网天津市电力公司 | A 0. 05 grade of miniature standard electric energy meter for passing through mutual -inductor is checied during inserting measurement of formula three -phase intelligent ammeter electric energy |
| CN204788450U (en) * | 2015-07-20 | 2015-11-18 | 河南省计量科学研究院 | Standard device of industrial safety in -line meter check gauge calibration usefulness |
| CN105258718A (en) * | 2015-09-25 | 2016-01-20 | 中国人民解放军防空兵学院 | Comprehensive tester metering detection system, adapter, and metering test platform |
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Application publication date: 20160706 |