CN104515956A - Method and device for detecting intelligent ammeter power module - Google Patents

Method and device for detecting intelligent ammeter power module Download PDF

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Publication number
CN104515956A
CN104515956A CN201410449842.5A CN201410449842A CN104515956A CN 104515956 A CN104515956 A CN 104515956A CN 201410449842 A CN201410449842 A CN 201410449842A CN 104515956 A CN104515956 A CN 104515956A
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China
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power module
voltage
measured
frequency
module
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CN201410449842.5A
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Chinese (zh)
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CN104515956B (en
Inventor
李擎
周红峰
刘全春
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国家电网公司
北京南瑞智芯微电子科技有限公司
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Abstract

The invention discloses a method and a device for detecting an intelligent ammeter power module, relates to the technical field of power meters, and solves the technical problem that intelligent ammeter power module detecting is low in efficiency in the prior art. The method can simultaneously detect the to-be-detected power modules of multiple intelligent ammeters. For optional one to-be-detected power module, the method includes: providing input voltage for the accessed to-be-detected power module; loading the to-be-detected power module to a load circuit by the output voltage generated by the input voltage; collecting the voltage-current data in the load circuit, and detecting the health of the to-be-detected power module according to the voltage-current data.

Description

A kind of intelligent electric energy meter power module detection method and device
Technical field
The present invention relates to electric instrument technical field, particularly a kind of intelligent electric energy meter power module detection method and device.
Background technology
Current China is very large to intelligent electric energy meter quantity required.Present intelligent electric energy meter is inner, and substantially all adopt modular design thinking, therefore power module is one of them indispensable part.Along with the extensive application of power module, the reliably working of power module directly determines the reliably working of intelligent electric energy meter.But, in process of production, to the pick test of power module usually adopt manual testing's output voltage, adjustment load, test by after just produce.
But, at least there is following technical matters in this mode manually detected power module in prior art:
1, power module is as the Primary Component in intelligent electric meter, and he is related to the steady operation of system and normal electric quantity metering.Adopt the way of manual detection before ammeter is produced, and all free requirement of the test of the load of each power module and overload, so be difficult to reach sampling observation quantitative requirement in manually-operated situation.
2, owing to adopting the method for artificial sampling observation.So 1 power module can only be tested at every turn.Will meet the requirements of sampling observation quantity like this, the time of needs can many or increase test staff.Add employment cost and time cost.
3, the test of power module is carried out at normal temperatures.Cannot realize testing power module within the scope of the total temperature required.
4, because tester itself does not understand design, so the undesirable and record of power module can only be tested out, positioning problems can not be formed.This causes needing again to carry out full test to not meeting the power module required that dispatches from the factory in the process of maintenance.Add the cycle of reprocessing.
Summary of the invention
In order to solve inefficiency that in prior art, manual detection power module causes, the technical matters such as cost is high, problem cannot be located, the present invention proposes a kind of intelligent electric energy meter power module detection method and device.
A kind of intelligent electric energy meter power module detection method, detects the power module to be measured of multiple intelligent electric energy meter simultaneously, for arbitrary power module to be measured, comprising:
For the power module to be measured of access provides input voltage;
The output voltage that power module to be measured produces because of input voltage is loaded into load circuit;
Gather the electric current and voltage data in load circuit, and according to the health status of electric current and voltage Data Detection power module to be measured.
Preferably, gather the electric current and voltage data in load circuit, and according to the health status of electric current and voltage Data Detection power module to be measured, specifically comprise:
Gather voltage ripple frequency and current ripples frequency in load circuit;
According to voltage ripple frequency and current ripples frequency computation part switching frequency;
The voltage ripple frequency of power module to be measured is determined and whether current ripples frequency is normal and whether on-off circuit is normal according to known switching frequency and the switching frequency that calculates.
Preferably, gather the electric current and voltage data in load circuit, and according to the health status of electric current and voltage Data Detection power module to be measured, also specifically comprise:
Gather the output voltage of load circuit;
Determine that whether the input circuit of power module to be measured is normal according to the whether normal situation of voltage ripple frequency and current ripples frequency and output voltage.
Preferably, gather the electric current and voltage data in load circuit, and according to the health status of electric current and voltage Data Detection power module to be measured, specifically comprise:
Gather the voltage under given load value in load circuit;
Determine that whether the load regulation circuit of power module to be measured is normal according to the voltage under the given load value gathered and the assigned voltage under given load value.
Preferably, the method also comprises: the health status exporting power module to be measured.
Preferably, before the power module to be measured for access provides input voltage, the method also comprises power module to be measured and is placed in environment temperature regulating box.
A kind of intelligent electric energy meter power module pick-up unit, detects the power module to be measured of multiple intelligent electric energy meter simultaneously, for arbitrary power module to be measured, comprising:
Interface module, for providing input voltage for the power module to be measured of access;
Load regulation module, is loaded into load circuit for the output voltage produced because of input voltage by power module to be measured;
Acquisition module, for gathering the electric current and voltage data in load circuit;
Control module, for the health status according to electric current and voltage Data Detection power module to be measured.
Preferably, acquisition module, has for gathering voltage ripple frequency and current ripples frequency in load circuit;
Control module, specifically for according to voltage ripple frequency and current ripples frequency computation part switching frequency; And determine the voltage ripple frequency of power module to be measured according to known switching frequency and the switching frequency that calculates and whether current ripples frequency is normal and whether on-off circuit is normal.
Preferably, acquisition module, also for gathering the output voltage of load circuit;
Control module, also for determining that whether the input circuit of power module to be measured is normal according to the whether normal situation of voltage ripple frequency and current ripples frequency and output voltage.
Preferably, acquisition module, also for gathering the voltage in load circuit under given load value;
Control module, also for determining that whether the load regulation circuit of power module to be measured is normal according to the voltage under the given load value gathered and the assigned voltage under given load value.
Preferably, also comprise: communication module, for exporting the health status of power module to be measured.
The such scheme that the present embodiment provides can carry out multiple power module measurement simultaneously, the Plan of Double Sampling Inspection of suitable batch production product.And by sampling to the output of power supply, orient power module problem place to be measured according to collected electric current and voltage data, therefore greatly can shorten the time that the later stage reprocesses, the technique effect of work efficiency is provided.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Single channel control principle schematic diagram in a kind of intelligent electric energy meter power module detection method that Fig. 1 provides for the embodiment of the present invention 1;
A kind of intelligent electric energy meter power module detection method process flow diagram that Fig. 2 provides for the embodiment of the present invention 1;
The structural drawing of a kind of intelligent electric energy meter power module pick-up unit that Fig. 3 provides for the embodiment of the present invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Further, following embodiment is possibility of the present invention, embodiment put in order and the numbering of embodiment and its order preferably performed have nothing to do.
Embodiment 1
Schematic diagram shown in the present embodiment composition graphs 1, a kind of intelligent electric energy meter power module detection method is provided, the method is applicable to being deployed on intelligent electric energy meter power module pick-up unit, and this device can detect the power module to be measured of multiple intelligent electric energy meter simultaneously.Below to describe the method for one of them power module to be measured, as shown in Figure 2, comprising:
101, for the power module described to be measured of access provides input voltage;
" intelligent electric energy meter power module pick-up unit " started by button, after device starts, controller can open the test access of 1 ~ 8 drive test examination according to the program of setting in advance.Often open 1 drive test examination, liquid crystal display just there will be corresponding display.As shown in Figure 1, after test starts, by key-press input, the 220V setting this that road power module of device output interface connects.After connection, corresponding power module to be measured connects 220V.Power module to be measured obtains electric rear work, and the output pin of power module can form corresponding output voltage.
In order to the carrying out that can realize within the scope of total temperature detects, in the preferred version of the present embodiment, be also included in before 101, power module to be measured is placed in environment temperature regulating box, and then obtain the technique effect that can carry out testing under the environment temperature of various setting.Put into environment temperature regulating box by power module to be measured, probe temperature is put in temperature adjustment.First by intelligent electric energy meter power module pick-up unit access civil power 220V, then by the input end of power module access pick-up unit " output interface ".The output of power module accesses this device corresponding " input interface ", notices that each power module access " output " to be measured is consistent with the position of " input ".
102, the output voltage that described power module to be measured produces because of described input voltage is loaded into load circuit;
Intelligent electric energy meter power module pick-up unit in the present embodiment comprises the load regulation circuit of an adjustable load value, to detect the output situation of power module under different loads, in addition, also can measure the load capacity of power module.
Owing to there being input voltage, so the output terminal of power module to be measured produces output voltage, after output voltage is accessed load, regulated by the size of load regulation circuit to access load, thus realize the Aulomatizeted Detect to power module to be measured.
103, gather the electric current and voltage data in described load circuit, and according to described electric current and voltage Data Detection the health status of power module to be measured.
This health status is the various testing results that power module obtains in testing process, as power module where is it problem, needs emphasis to detect; The ripple frequency of power module, load capacity etc.
Specifically, 103 by such as under type realization:
Gather voltage ripple frequency and current ripples frequency in described load circuit; According to described voltage ripple frequency and described current ripples frequency computation part switching frequency; The voltage ripple frequency of described power module to be measured is determined and whether current ripples frequency is normal and whether on-off circuit is normal according to known switching frequency and the described switching frequency that calculates.
Such as, in test process, by Sampling techniques, the frequency of the voltage ripple that a large amount of collection power module exports after overload and current ripples.By carrying out to voltage, current ripples frequency the switching frequency that Fourier analysis can calculate Switching Power Supply.The switching frequency turning direct current due to the interchange adopted in power module is known, so by the switching frequency drawn through Fourier analysis and known switching frequency being compared, can know that whether voltage that power module exports, current ripples frequency be normal.If actual measurement ripple frequency and design frequency deviation are comparatively large, then power switch circuit part can be diagnosed out to have problem.Emphasis is needed to detect.
Further, the output voltage of described load circuit can also be gathered; According to described voltage ripple frequency and described current ripples frequency, normal situation and described output voltage determine that whether the input circuit of described power module to be measured is normal.
Such as in test process, export undesirable if test out power module in the 220V input variation range of specifying, and ripple is normal, then power module input circuit can be diagnosed out to have problem, need emphasis to detect.
Further, the voltage in load circuit under given load value is gathered;
Determine that whether the load regulation circuit of described power module to be measured is normal according to the voltage under the described given load value gathered and the assigned voltage under given load value.
Such as in test process, if the Voltage Drop tested out in given load value is comparatively large, then power module load regulation partial circuit can be diagnosed out to have problem, need emphasis to detect.
In preferred version, the method that the present embodiment provides also comprises: the health status exporting described power module to be measured.
Such as after a test, can contrast test result and pass result, the report whether formation is qualified, can be derived by communication interface.This report includes power module to be measured numbering, test condition, goes wrong and content such as emphasis monitoring which position of power module etc. under which test condition.
The method that the present embodiment provides is loaded on power module to be measured by adopting control 220V, and after 220V is switched on, power module to be measured has just had input voltage.Power module to be measured obtains electric rear work, and output pin can form corresponding output voltage.After output voltage is accessed load, this voltage is gathered and automatic measurement with carrying the mode of measuring voltage and realizing power module to be measured.The index such as ripple, load capacity of power module is also measured simultaneously simultaneously.Therefore following beneficial effect can be obtained:
1, under full environment temperature, the power module part of intelligent electric energy meter is measured, like this than original at normal temperature test screen more directly, reliable.Achieve and use the means of intelligent test that people is freed from work frequently, tester need not frequently change, wait for power module test event.
2, this device can multiplely work simultaneously.Such staff only needs disposablely to connect the work that rear observation goes to carry out other again, and the Qualification of test can automatic record.Meanwhile, the requirement to tester is reduced.
3, test result can provide guiding suggestion to reprocessing of power module, reduces servicing time.
4, efficiency significantly improves, and once can check multiple power module.Increase the quantity of the sample of sampling observation.If desired, this device parallel connection is used, can effectively reduce the product quality problem caused in the quality reason due to power module.
Embodiment 2
Realize for the ease of the method in embodiment 1, the present embodiment provides a kind of intelligent electric energy meter power module pick-up unit, this device can detect the power module to be measured of multiple intelligent electric energy meter simultaneously, as shown in Figure 3, mainly comprise: interface module 21, load regulation module 22, acquisition module 23, control module 24.
Interface module 21, for providing input voltage for the power module to be measured of access;
Load regulation module 22, for providing load value adjustable load circuit, and is loaded into load circuit by the output voltage that power module to be measured produces because of input voltage;
Acquisition module 23, for gathering the electric current and voltage data in load circuit;
Control module 24, for the health status according to electric current and voltage Data Detection power module to be measured.
Preferably, acquisition module 23, has for gathering voltage ripple frequency and current ripples frequency in load circuit;
Control module 24, specifically for according to voltage ripple frequency and current ripples frequency computation part switching frequency; And determine the voltage ripple frequency of power module to be measured according to known switching frequency and the switching frequency that calculates and whether current ripples frequency is normal and whether on-off circuit is normal.
Preferably, acquisition module 23, also for gathering the output voltage of load circuit;
Control module 24, also for determining that whether the input circuit of power module to be measured is normal according to the whether normal situation of voltage ripple frequency and current ripples frequency and output voltage.
Preferably, acquisition module 23, also for gathering the voltage in load circuit under given load value;
Control module 24, also for determining that whether the load regulation circuit of power module to be measured is normal according to the voltage under the given load value gathered and the assigned voltage under given load value.
Preferably, this device also comprises: communication module 25, for exporting the health status of power module to be measured.
The device that the present embodiment provides, by after the output voltage of power module to be measured access load, gathers this voltage and automatic measurement with carrying the mode of measuring voltage and realizing power module to be measured.Therefore can obtain and under full environment temperature, the power module part of intelligent electric energy meter be measured, can multiplely work simultaneously.Test result can provide guiding suggestion to reprocessing of power module, reduces servicing time.The technique effect that efficiency significantly improves.
The products such as the said equipment that the embodiment of the present invention provides or device belong to the flow and method of computer program for foundation, and according to each step corresponding consistent mode completely with method flow in embodiment of the method 1 and/or accompanying drawing, the functional module provided.And because this functional module is the software service realized by the mode of computer program, so the functional module specifically do not mentioned for device embodiment 2, owing to considering that the content recorded according to said method embodiment has enough made those skilled in the art determine directly, expectedly to realize the functional module that described step must set up, so be not repeated herein from each process step of method record.
Because the intelligent electric energy meter power module pick-up unit of above-described embodiment 2 is used to realize the method in embodiment 1, therefore in example 2 each module or unit do not describe in detail to the greatest extent part all those skilled in the art by running away with, so do not repeat them here with reference in corresponding embodiment 1.
The above, be only the specific embodiment of the present invention, but the present invention can have multiple multi-form embodiment, by reference to the accompanying drawings the present invention is illustrated above, this does not also mean that the embodiment that the present invention applies can only be confined in these specific embodiments, those skilled in the art should understand, embodiment provided above is some examples in multiple preferred implementation, and the embodiment of any embodiment the claims in the present invention all should within the claims in the present invention scope required for protection; Those skilled in the art can modify to technical scheme described in each embodiment above, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent to replace or improvement etc., within the protection domain that all should be included in the claims in the present invention.

Claims (11)

1. an intelligent electric energy meter power module detection method, is characterized in that, detects the power module to be measured of multiple intelligent electric energy meter simultaneously, for arbitrary power module to be measured, comprising:
For the power module described to be measured of access provides input voltage;
The output voltage that described power module to be measured produces because of described input voltage is loaded into load circuit;
Gather the electric current and voltage data in described load circuit, and according to described electric current and voltage Data Detection the health status of power module to be measured.
2. method according to claim 1, is characterized in that, the electric current and voltage data in the described load circuit of described collection, and according to described electric current and voltage Data Detection the health status of power module to be measured, specifically comprise:
Gather voltage ripple frequency and current ripples frequency in described load circuit;
According to described voltage ripple frequency and described current ripples frequency computation part switching frequency;
The voltage ripple frequency of described power module to be measured is determined and whether current ripples frequency is normal and whether on-off circuit is normal according to known switching frequency and the described switching frequency that calculates.
3. method according to claim 2, is characterized in that, the electric current and voltage data in the described load circuit of described collection, and according to described electric current and voltage Data Detection the health status of power module to be measured, also specifically comprise:
Gather the output voltage of described load circuit;
According to described voltage ripple frequency and described current ripples frequency, normal situation and described output voltage determine that whether the input circuit of described power module to be measured is normal.
4. according to the method in claim 1-3 described in any one, it is characterized in that, the electric current and voltage data in the described load circuit of described collection, and according to described electric current and voltage Data Detection the health status of power module to be measured, specifically comprise:
Gather the voltage under given load value in load circuit;
Determine that whether the load regulation circuit of described power module to be measured is normal according to the voltage under the described given load value gathered and the assigned voltage under given load value.
5. according to the method in claim 1-3 described in any one, it is characterized in that, the method also comprises: the health status exporting described power module to be measured.
6. according to the method in claim 1-3 described in any one, it is characterized in that, before the power module to be measured for access provides input voltage, the method also comprises described power module to be measured and is placed in environment temperature regulating box.
7. an intelligent electric energy meter power module pick-up unit, is characterized in that, detects simultaneously, comprising the power module to be measured of multiple intelligent electric energy meter:
Interface module, for providing input voltage for the power module described to be measured of access;
Load regulation module, is loaded into load circuit for the output voltage produced because of described input voltage by described power module to be measured;
Acquisition module, for gathering the electric current and voltage data in described load circuit;
Control module, for the health status of power module to be measured according to described electric current and voltage Data Detection.
8. device according to claim 7, is characterized in that,
Described acquisition module, has for gathering voltage ripple frequency and current ripples frequency in described load circuit;
Described control module, specifically for according to described voltage ripple frequency and described current ripples frequency computation part switching frequency; And determine the voltage ripple frequency of described power module to be measured according to known switching frequency and the described switching frequency that calculates and whether current ripples frequency is normal and whether on-off circuit is normal.
9. device according to claim 8, is characterized in that,
Described acquisition module, also for gathering the output voltage of described load circuit;
Described control module, also for according to described voltage ripple frequency and described current ripples frequency, normal situation and described output voltage determine that whether the input circuit of described power module to be measured is normal.
10., according to the device in claim 7-9 described in any one, it is characterized in that,
Described acquisition module, also for gathering the voltage in load circuit under given load value;
Described control module, also for determining that whether the load regulation circuit of described power module to be measured is normal according to the voltage under the described given load value gathered and the assigned voltage under given load value.
11., according to the device in claim 7-9 described in any one, is characterized in that, also comprise:
Communication module, for exporting the health status of described power module to be measured.
CN201410449842.5A 2013-09-27 2014-09-04 A kind of intelligent electric energy meter power module detection method and device Active CN104515956B (en)

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CN201320603052 2013-09-27
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN105676147A (en) * 2016-01-26 2016-06-15 合肥华耀电子工业有限公司 Radar power supply automatic test method
CN106293676A (en) * 2015-06-08 2017-01-04 东元电机股份有限公司 Produce the method and system of whole detection program
CN109031158A (en) * 2018-08-15 2018-12-18 大族激光科技产业集团股份有限公司 The test macro and method of laser power supply
CN110673083A (en) * 2019-11-13 2020-01-10 云南电网有限责任公司电力科学研究院 Direct current standard source device for detecting electric energy meter metering error

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CN201373911Y (en) * 2009-02-23 2009-12-30 深圳市联欣科技有限公司 Integrated test system for switch power source
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CN201173965Y (en) * 2008-09-01 2008-12-31 四川电力试验研究院 Core technical parameter automatic test system of electric project DC power source equipment
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Publication number Priority date Publication date Assignee Title
CN106293676A (en) * 2015-06-08 2017-01-04 东元电机股份有限公司 Produce the method and system of whole detection program
CN106293676B (en) * 2015-06-08 2019-05-10 东元电机股份有限公司 Generate the method and system of whole detection program
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CN110673083A (en) * 2019-11-13 2020-01-10 云南电网有限责任公司电力科学研究院 Direct current standard source device for detecting electric energy meter metering error
CN110673083B (en) * 2019-11-13 2020-11-27 云南电网有限责任公司电力科学研究院 Direct current standard source device for detecting electric energy meter metering error

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