CN109738846A - A kind of correction method based on meter active self-correcting - Google Patents
A kind of correction method based on meter active self-correcting Download PDFInfo
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Abstract
The present invention discloses a kind of correction method based on meter active self-correcting, using the mode of one calibration equipment of a checklist, checklist is according to the calibration scheme and parameter active calibration of its storage inside, error bound in conjunction with built in error information and checklist independently judges whether verification is qualified, and verification data and judging result are uploaded to management system.Checklist of the present invention becomes the autonomous calibration of active control calibration equipment from original passive calibration, reduces the exploitation and maintenance of the meter calibration upper computer software of different agreement, while calibration equipment simplifies calibration equipment from actively becoming passive.
Description
Technical field
The present invention relates to a kind of high speed correction methods based on meter active self-correcting, are mainly used for the school of intelligent electric energy meter
It tests.
Background technique
Integrated planning with state's net to next-generation smart grid, the fundamental policy of portable source internet and state's net essence
The technology complexity of the requirement of ZOOM analysis, meter is higher and higher, and many small meter enterprises have been difficult to bear this lasting
High-intensitive Innovation Input, gradually by the way of OEM.After OEM gradually may become a kind of mainstream business, to win
The order of OEM, the degree of automation, production efficiency must improve, because only that the degree of automation and high production efficiency, cost just have
Competitiveness, the continuous of another aspect Chinese human cost are risen, and internal manufacturing expense is continuously increased, and exterior market competition has more
It is fiercer to come, and therefore, cuts payroll to improve efficiency just particularly important, the requirement of the raising production efficiency of enterprise is more urgent.
Traditional calibration mode is that meter is the product being passively calibrated, and verification stage body and automation calibration assembly line are
The judgement of entire calibration process and result is initiated by stage body and automatic assembly line and manipulated to the calibration equipment of active, there is
Following two problem: 1, low efficiency.Due to being stage body or automatic assembly line for actively, stage body must be detecting
After thering is epitope to be all on board, calibration work can be just initiated, need to wait until that all epitopes are all hung up properly in common table sports school table
Table, in automatic assembly line calibration, it is necessary to which until table all warehouse entries of all epitopes, the waiting time is very very long, most of
Time is all wasted, and causes whole calibration efficiency very low.
2, equipment or assembly line are excessively complicated, cause unstable, cause capacity loss.The school of currently used equipment active
Table schema, the mode propose higher requirement to calibration equipment, equipment in addition to export the voltage of stable calibration, electric current and
Outside phase, also to have the ability to communicate of the meter of the control ability and different communications protocol that control different calibration gears, tool
The error calculation ability of the meter of each standby epitope will also have the fan-out capability of isolation electric current for the single-phase meter of two lines,
Also to have the isolating power of voltage for the calibration stage body of three-phase meter, therefore, entire stage body or assembly line be caused to become very
Complexity, in order to reach requirement above, equipment will be divided into signal source, standard scale, voltage power amplifier, current amplification, isolation CT,
Error Calculator, isolation PT etc. component and establishment, will also install the calibration software of different meters on computers；Therefore,
Entire meter and stage body are very complicated, and equipment and software are once after complicated, reliability is reduced, and therefore, workshop often occurs
Since the assembly line of calibration stage body and calibration there is a problem, causes the entire production line to stop line maintenance, seriously affect output.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of based on meter active self-correcting high speed correction method.
The invention adopts the following technical scheme:
A kind of correction method based on meter active self-correcting, the described method comprises the following steps:
S1, according to checklist information, parameter setting is carried out to the corresponding calibration equipment of each epitope；
S2, checklist is hung up to corresponding epitope, calibration equipment is that checklist loads voltage rating, is powered for checklist；
Actively its address and checklist, which have been powered on instruction, is uploaded to management system for S3, calibration equipment, and management system receives
One response of the calibration equipment is given after the instruction, (template number is inside plants to the template number of acquisition checklist after several seconds that are delayed
Number, does not repeat uniquely, similar to identification card number for indicating its identity), and process judgement is carried out according to the template number；If work
Sequence judgement passes through, and sends the enabled order of calibration to checklist, executes step S4；If process judgement does not pass through, management system control
To electricity under checklist, (lower electricity is management system control calibration equipment drop source (voltage and current output is 0), calibration equipment to calibration equipment
Do not power to checklist) and failure alarm signal is issued, calibration stops；
(parameter packet includes ammeter type, fundamental voltage, electric current, output frequency to calibration equipment transmission parameter packet for S4, checklist
Rate exports phase sequence, current direction, power factor (PF) etc.), its on-load voltage, current signal are requested, and export and stablize in calibration equipment
Under conditions of, the mistake according to the calibration scheme of its storage inside and parameter active calibration, built in binding test data and checklist
Poor bound independently judges whether verification is qualified, and verification data and judging result are uploaded to management system；
Each epitope is correspondingly arranged the calibration equipment, mutually indepedent between each calibration equipment, and respectively with management
System communication connection.
Above-mentioned management system is installed in the end PC, includes the entire production procedure of ammeter, and records each electricity in real time
Which process table experienced, to judge whether current process meets its production procedure.
Further, described according to checklist order information in the step S1, the corresponding calibration equipment of each epitope is carried out
Parameter setting, specifically:
According to checklist order information, manual queries obtain checklist specification information, then by management system to each table
The corresponding calibration equipment in position carries out the setting of output voltage specification.For the checklist of same order, step S1 only for the first time calibration when
It carries out, it is subsequent to omit.
Further, S2 can divide manual mode or automatic mode pocket watch to power on.Manual mode specifically:
Checklist is hung up into corresponding epitope, trigger pocket watch status signal and feeds back to calibration equipment, calibration equipment receives
After controlling epitope status indicator lamp display green light after signal, starting calibration equipment voltage output switch, calibration equipment exports specified
On voltage value to checklist, power for checklist；
Alternatively, automatic mode pocket watch powers on: checklist hangs up corresponding epitope, triggers pocket watch status signal and feeds back to verification
Device, calibration equipment in automatic output rated voltage value to checklist, are powered, and control epitope after postponing several seconds for checklist
Status indicator lamp shows green light.
Further, in the step S3, the template number of checklist is obtained after several seconds that are delayed, specifically:
Management system gives calibration equipment one response message, is delayed after several seconds, actively sends an acquisition to checklist
The instruction of checklist template number；
After checklist receives the instruction, its template number is sent to management system by calibration equipment；
Management system is tied up according to the template number of the checklist and the address of calibration equipment, by the checklist with calibration equipment
It is fixed that (binding herein is in order to which follow-up data traces and counts, and it is which is verified that rear road, which releases that unqualified table counter can look into,
Device school comes out, to handle and to repair in time), and store the binding information.
Further, in the step S4, after checklist receives the enabled order of calibration, parameter packet is sent to calibration equipment,
Its on-load voltage, current signal are requested, specifically:
After checklist receives the enabled order of calibration, according to the scheme of its storage inside and parameter active transmission order to school
Experiment device is adjusted, and calibration equipment voluntarily adjusts output according to the order, to checklist output voltage, current signal.
Further, in the step S4, judge that calibration equipment exports stable method are as follows:
After checklist receives the voltage of calibration equipment load, current signal, inquiry calibration equipment exports whether stable, school
Stabilization result is fed back to checklist according to the inquiry by experiment device；
If checklist is received and instructed " in adjustment ", checklist retransmits inquiry, and calibration equipment is waited to reply；
If checklist receives " success " instruction, start autonomous calibration；
If checklist receives " failure " instruction, which is sent to management system, management system is fed back to checklist
And electricity under calibration equipment is controlled, unqualified signal is exported, calibration stops.
Determine whether stabilization for calibration equipment innernal CPU oneself, i.e. CPU needs to judge that the voltage of output, electric current, power are
It is no accurate, also need the performance number for judge to export whether stable, accurately whether be to be compared according to by source output valve with theoretical value,
Error range control determines that calibration equipment output is accurate in ± 0.2%, is according to calibration equipment whether stabilization in a timing
Difference between the performance number and average value of internal standard table is read in interior continuous several seconds, and error range controls in ± 0.05%
Determine that calibration equipment is stablized.
Present mode is that computer end upper computer software control source exports and read the voltage value U2 of tester, current value I2,
Performance number W2 is handed down to tested table, is tested and surveys table according to the voltage and current performance number and U2 itself sampled, and I2, W2 are calculated,
Difference and correction factor are calculated, is written in storage chip.
And in step S4 of the present invention, checklist active control calibration equipment is by the test point output voltage electricity in calibration scheme
Stream, after calibration equipment is stablized, checklist reads voltage value U1, current value I1, the performance number W1 of calibration equipment output, is tested simultaneously
The voltage value that table is sampled according to itself, current value, performance number and U1, I1, W1 are calculated, and difference and correction factor are calculated,
It is written in storage chip, completes calibration.
Preferably, the correction method is further comprising the steps of:
Judging result is fed back to checklist by S5, management system, if this calibration link is qualified, checklist executes step S4
Automatically next link calibration is carried out, if this calibration link is unqualified, electric and output does not conform under management system control calibration equipment
Lattice signal, calibration stop.
More preferably, the correction method is further comprising the steps of:
If all calibration links of S6, checklist are qualified, management system is in the judging result for receiving last calibration link
And after qualified summary opinion, result will be received and feed back to checklist, and control electricity under calibration equipment, qualifying signal is exported, is manually unloaded
Table completes calibration.
It should be noted that checklist is unable to power down during calibration in (S4~S6), such as midway power down, need artificial
Intervene calibration again.
In addition, the present invention provides a kind of tester, including the epitope for placing checklist, each epitope is correspondingly arranged
One calibration equipment, each calibration equipment are communicated to connect with the checklist in corresponding epitope respectively；Phase between each calibration equipment
It is mutually independent, and connect respectively with communication.
Further, the calibration equipment be portable calibration equipment (abbreviation portable source, source), it is built-in for calibration equipment,
The communication conversion module mutually communicated between checklist, management system, and for the power to checklist output voltage, electric current
Source.
Compared with prior art, the invention has the following advantages:
1, the innovation of checking mode, the autonomous calibration of checklist active control calibration equipment, reduces the meter of different agreement
The exploitation and maintenance of calibration upper computer software, while calibration equipment simplifies calibration equipment from actively becoming passive.
2, calibration is high-efficient, one source of a table, each epitope can parallel calibration, be independent of each other.
3, EM equipment module, using one source module of a table, wiring is simple, easy to maintain.
4, meter is automatically controlled according to built-in scheme is originated from main calibration, calibration result meter according to built-in error above and below
Limit judges automatically and is uploaded to management system, monitors in real time.
Detailed description of the invention
Fig. 1 is system block diagram of the invention.
Fig. 2 is flow chart of the invention.
Specific embodiment
Technical solution to facilitate the understanding of the present invention is described in detail below in conjunction with attached drawing and specific embodiment.
As shown in Figure 1, the correction method of the present invention based on meter active self-correcting is tester shown in Fig. 1
Middle progress.Tester includes multiple epitopes for placing checklist, and each epitope is correspondingly arranged a calibration equipment (referred to as
Portable source, source), each calibration equipment is communicated to connect with the checklist in corresponding epitope respectively；It is mutually indepedent between each calibration equipment,
And it is connect respectively with the communication at the end PC.Epitope is equipped with the epitope shape of epitope and display pocket watch state for pocket watch
State indicator light, calibration equipment further include power source, communication conversion module, and power source is mainly used for output voltage, electric current to tested
Table provides voltage and current, the management system that communication conversion module is installed for realizing checklist, power source, the end PC for checklist
Between communication dispatch and protocol conversion.Specifically, it is equipped with hub (HUB)/interchanger between calibration equipment and the end PC, passes through
The Socket interface of ICP/IP protocol realizes network communication.Management system is specially to be installed on the MES system at the end PC, includes electricity
The entire production procedure of table, and record which process each ammeter experienced in real time, to judge whether current process meets it
Production procedure.
As shown in Fig. 2, the correction method based on meter active self-correcting carried out using above-mentioned tester, including following step
It is rapid:
S1: operator obtains the parameter specification of checklist by the management system at the end PC according to checklist order information,
Calibration equipment (each verification dress for being corresponded by management system pair with each checklist and being connect with management system end communicativeness
Set with the different addresses ID, first set in a management system) parameter setting is carried out, design parameter is set as output voltage
Specification setting；When for same order, the step only for the first time calibration when carry out, it is subsequent to omit.
S2: manual mode or automatic mode pocket watch power on.Manual mode specifically: checklist is hung up into corresponding epitope, table
Position triggering pocket watch status signal simultaneously feeds back to calibration equipment, and control epitope status indicator lamp is shown after calibration equipment receives signal
After green light (green light represents equipment normal operation), calibration equipment voltage output switch, calibration equipment output voltage are manually started
It is worth on checklist, powers for checklist；
Automatic mode specifically: checklist hangs up corresponding epitope, and epitope triggering pocket watch status signal simultaneously feeds back to verification dress
It sets, after calibration equipment delay several seconds on automatic output voltage values to checklist, and controls epitope status indicator lamp and show green light；
If calibration equipment does not receive pocket watch signal, attonity is not powered on.
S3: after checklist powers on, its subsidiary address ID is actively sent to by calibration equipment with the instruction that checklist has powered on
The management system at the end PC, management system make response after receiving instruction, and postpone active in several seconds and obtain for one to checklist transmission
After taking the instruction of checklist template number, checklist to receive the instruction, communication conversion module that its template number is passed through into calibration equipment
It is sent to management system；Management system is according to the template number of the checklist and the address of calibration equipment, by the checklist and school
Experiment device binding, and the binding information is stored, binding is in order to which follow-up data traces and counts, and rear road is released unqualified
It is which calibration equipment school comes out that table, which counter can be looked into, to handle and to repair in time.
Management system carries out process judgement according to template number, if it exists meter to be corrected task, and process judgement passes through, management system
The enabled order of calibration is sent to checklist, subsequently into next step S4；Meter to be corrected task if it does not exist, process judge obstructed
It crosses, management system sends drop source to calibration equipment and requests and control to export failure alarm signal (the calibration work of control calibration equipment
Position indicator light red light is bright), electricity under calibration equipment, calibration stops, manual intervention.
S4: after checklist receives the enabled order of calibration, according to the scheme of its storage inside and parameter, (parameter includes ammeter
Type, fundamental voltage, electric current, output frequency, export phase sequence, current direction, power factor (PF) etc.) active transmission order to verification dress
It sets and is adjusted, calibration equipment voluntarily adjusts output according to the order, to checklist output voltage, current signal, and is verifying
Under conditions of device output is stablized, according to the calibration scheme of its storage inside and parameter active calibration, checklist reads verification dress
Set the instantaneous voltage value U1 of output, current value I1, performance number W1, while the voltage value that checklist is sampled according to itself, current value,
Performance number and U1, I1, W1 are calculated, and difference and correction factor are calculated, and are written in storage chip, and will verification data and knot
Fruit (the qualified or not conclusion that error information and checklist including test point independently judge according to built-in error bound, accidentally
Difference data refers to the absolute value of the difference of the instantaneous value of calibration equipment and the instantaneous value of checklist) judge to be uploaded to management system.
Judge that calibration equipment exports stable method are as follows: checklist receives the voltage of calibration equipment load, current signal
Afterwards, checklist sends the whether stable instruction of inquiry calibration equipment to calibration equipment, after calibration equipment receives instruction, inside
CPU carries out output accuracy judgement first, and source output valve is compared with theoretical value, and error range controls after ± 0.2%,
Power stability judgement is carried out again, according to the performance number for reading internal standard table for continuous several seconds of calibration equipment within a certain period of time
The difference between average value, error range control determine that calibration equipment is stablized after ± 0.05%, and calibration equipment, which will be stablized, to be tied
Fruit feeds back to checklist (stabilization result is there are three state: in adjustment, successfully, unsuccessfully, 20s stabilization upper limit time), if checklist
It receives after being instructed " in adjustment ", checklist retransmits inquiry instruction, and calibration equipment is waited to reply；If checklist receives " success "
Start autonomous calibration after instruction；If after checklist receives " failure " instruction, being defaulted as epitope calibration equipment exception, not with conclusion
Qualification is sent to management system, and management system is responded to checklist one and electricity under active control calibration equipment, control verify dress
Output failure alarm signal (the calibration station indicator light red light is bright) is set, calibration stops, manual intervention.
S5: judging result is fed back to checklist by management system, if this calibration link is qualified, checklist executes step S4
Automatically next link calibration is carried out, if this calibration link is unqualified, electric and output does not conform under management system control calibration equipment
Lattice signal, and control calibration equipment and export unqualified signal (the calibration station red light is bright), calibration stops, manual intervention.
S6: if all calibration links of checklist are qualified, management system is in the judging result for receiving last calibration link
And after qualified summary opinion, result will be received and feed back to checklist, and control electric under calibration equipment, output qualifying signal (calibration
Station green light), it manually unloads table (calibration station indicator light amber light is bright after unloading table), completes calibration.
During entire calibration, checklist voltage is unable to power down, otherwise requires manual intervention calibration again.Each link
Calibration require inquiry calibration equipment it is whether stable.
When calibration suspension needs manual intervention during calibration, operator can read from management system stops reason.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is with claim limited range
Standard, several improvements and modifications that those skilled in the art make without departing from the spirit and scope of the present invention also should be regarded as this
The protection scope of invention.
Claims (10)
1. a kind of correction method based on meter active self-correcting, it is characterised in that the described method comprises the following steps:
S1, according to checklist information, parameter setting is carried out to the corresponding calibration equipment of each epitope；
S2, checklist is hung up to corresponding epitope, calibration equipment is that checklist loads voltage rating, is powered for checklist；
Actively its address and checklist, which have been powered on instruction, is uploaded to management system for S3, calibration equipment, and management system receives this and refers to
One response of the calibration equipment is given after order, the template number of checklist is obtained after several seconds that are delayed, and work is carried out according to the template number
Sequence judgement；If process judgement passes through, the enabled order of calibration is sent to checklist, executes step S4；If process judgement does not pass through, manage
Reason system controls calibration equipment to electricity under checklist and issues failure alarm signal, and calibration stops；
S4, checklist send parameter packet to calibration equipment, request its on-load voltage, current signal, and steady in calibration equipment output
Under conditions of fixed, according to the calibration scheme of its storage inside and parameter active calibration, built in binding test data and checklist
Error bound independently judges whether verification is qualified, and verification data and judging result are uploaded to management system；
Each epitope is correspondingly arranged the calibration equipment, mutually indepedent between each calibration equipment, and respectively with management system
Communication connection.
2. correction method as described in claim 1, which is characterized in that described to be believed according to checklist order in the step S1
Breath carries out parameter setting to the corresponding calibration equipment of each epitope, specifically:
According to checklist order information, manual queries obtain checklist specification information, then by management system to each epitope pair
The calibration equipment answered carries out the setting of output voltage specification.
3. correction method as described in claim 1, which is characterized in that obtained in the step S3, after several seconds that are delayed tested
The template number of table, specifically:
Management system gives calibration equipment one response message, is delayed after several seconds, and it is tested actively to send an acquisition to checklist
The instruction of table template number；
After checklist receives the instruction, its template number is sent to management system by calibration equipment；
Management system binds the checklist and calibration equipment according to the template number of the checklist and the address of calibration equipment,
And store the binding information.
4. correction method as described in claim 1, which is characterized in that in the step S4, it is enabled that checklist receives calibration
After order, parameter packet is sent to calibration equipment, requests its on-load voltage, current signal, specifically:
After checklist receives the enabled order of calibration, verification dress is given according to the scheme of its storage inside and parameter active transmission order
It sets and is adjusted, calibration equipment voluntarily adjusts output according to the order, to checklist output voltage, current signal.
5. correction method as described in claim 1, which is characterized in that in the step S4, judge that calibration equipment output is stablized
Method are as follows:
After checklist receives the voltage of calibration equipment load, current signal, whether inquiry calibration equipment output is stable, verification dress
It sets and stabilization result is fed back to by checklist according to the inquiry；
If checklist is received and instructed " in adjustment ", checklist retransmits inquiry, and calibration equipment is waited to reply；
If checklist receives " success " instruction, start autonomous calibration；
If checklist receives " failure " instruction, which is sent to management system, management system is fed back and controlled to checklist
It is electric under calibration equipment processed, unqualified signal is exported, calibration stops.
6. correction method as described in claim 1, which is characterized in that in the step S4, according to the calibration of its storage inside
The method of scheme and parameter active calibration are as follows:
Checklist active control calibration equipment is by the test point output voltage electric current in calibration scheme, after calibration equipment is stablized, quilt
Examine voltage value U1, current value I1, performance number W1 that table reads calibration equipment output, while the voltage that tested table is sampled according to itself
Value, current value, performance number and U1, I1, W1 are calculated, and difference and correction factor are calculated, and are written in storage chip, and school is completed
Table.
7. correction method as described in claim 1, which is characterized in that the step S2 specifically:
Checklist is hung up into corresponding epitope, trigger pocket watch status signal and feeds back to calibration equipment, calibration equipment receives signal
After control epitope status indicator lamp shows green light afterwards, starting calibration equipment voltage output switch, calibration equipment output rated voltage
It is worth on checklist, powers for checklist；
Alternatively, checklist hangs up corresponding epitope, triggers pocket watch status signal and feed back to calibration equipment, calibration equipment delay is several
It after second in automatic output rated voltage value to checklist, powers for checklist, and controls epitope status indicator lamp and show green light.
8. correction method as described in claim 1, which is characterized in that the correction method further include:
Judging result is fed back to checklist by S5, management system, if this calibration link is qualified, it is automatic that checklist executes step S4
Next link calibration is carried out, if this calibration link is unqualified, management system controls electricity under calibration equipment and exports unqualified letter
Number, calibration stops.
9. correction method as claimed in claim 8, which is characterized in that the correction method further include:
If all calibration links of S6, checklist are qualified, management system is in the judging result and conjunction for receiving last calibration link
After lattice summarize opinion, result will be received and feed back to checklist, and control electricity under calibration equipment, exported qualifying signal, manually unload table, it is complete
At calibration.
10. a kind of tester, including the epitope for placing checklist, which is characterized in that each epitope is correspondingly arranged one
The calibration equipment, each calibration equipment are communicated to connect with the checklist in corresponding epitope respectively；Between each calibration equipment mutually solely
It is vertical, and connect respectively with communication；The calibration equipment is portable calibration equipment, built-in to be used for calibration equipment, quilt
The communication conversion module mutually communicated between inspection table, management system, and for the power to checklist output voltage, electric current
Source.
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