CN106501759A - A kind of single-phase electric energy meter production line automation correction method - Google Patents
A kind of single-phase electric energy meter production line automation correction method Download PDFInfo
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- CN106501759A CN106501759A CN201611120400.1A CN201611120400A CN106501759A CN 106501759 A CN106501759 A CN 106501759A CN 201611120400 A CN201611120400 A CN 201611120400A CN 106501759 A CN106501759 A CN 106501759A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a kind of single-phase electric energy meter production line automation correction method, using calibration equipment, the calibration equipment hardware includes single-phase standard scale, error instrument, single phase poaer supply, state's net single-phase electric energy meter support, gas pump power source compression bonding apparatus and stage body control module, automation calibration include nine calibration steps, above-mentioned technical proposal, improve the speed of calibration, improving yield；The time-of-day clock error and electricity error of accurate alignment electric energy meter；The basic parameter of electric energy meter is can verify that, common hardware problem is found；The production process of tracking electric energy meter, and the key parameter in electric energy meter calibration process is recorded, data can be tracked；In the case of not Switching power, the mode according to power calibrates the error of table, reduces switching and stand-by period.
Description
Technical field
The present invention relates to electric energy meter technical field, and in particular to a kind of single-phase electric energy meter production line automation correction method.
Background technology
At this stage, each ammeter producer adopts mostly the verification of 48 epi-position virtual serial ports to the mode of single-phase electric energy meter calibration
Platform, point six steps carry out error checking to single-phase meter.The checking process of this mode, has many inconveniences, wastes a lot of times,
Increased bad example.
For from production procedure, traditional production technology is, after the good table of streamline over-assemble, table transport to independently
Tune-up shop calibration, after verification table transport to aging workshop aging.The method of this independent tune-up shop, a lot of times
Transport is wasted in, is loosened the screw a little, checking table on pocket watch screws, unload checking table under table, switch pulse cross-talk, Switching power are waited
Stable etc., and transport, screwing, pocket watch unloads table etc. probability damage table.Individually tune-up shop, wastes the field of production
Ground, takes the resources such as substantial amounts of manpower, place, air-conditioning.
From for calibration program, traditional debugging plan adopts error calibration scheme, typically point six steps to complete：(1) A channel
Voltage rises source, and measuring parameter is initialized, the coefficient such as calibration voltage current power；(2) booster voltage 100%Un, electric current 100%
Ib, phase place 1.0L wait power good, and set error instrument waits current error value to be read, according to error current value calibration power
Gain error；(3) ibid step calibration voltage 100%Un, electric current 100%Ib, the phase error calibration of phase place 0.5L；(4) ibid
One step calibration voltage 100%Un, electric current 5%Ib, the small signal power biased error of phase place 1.0L；(5) switch channel B voltage
100%Un, electric current 100%Ib, phase place 1.0L calibrate channel B current coefficient；(6) clocking error is calibrated.This calibration steps wave
Take a lot of times in a liter power supply, Switching power, wait power good, wait error instrument to go out error, particularly small signal power school
Standard, waits error instrument to go out error and wants a few minutes clock time, and a people completes workload probably in 90-120/hour.
Content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide one kind is in the case of not Switching power, root
According to the error that the mode of power calibrates table, the single-phase electric energy meter production line automation correction method of switching and stand-by period is reduced.
For achieving the above object, the invention provides following technical scheme：A kind of single-phase electric energy meter production line automation school
Table method, using calibration equipment, the calibration equipment hardware includes single-phase standard scale, error instrument, single phase poaer supply, state's net single-phase electric energy
Biao Biaotuo, gas pump power source compression bonding apparatus and stage body control module, automation calibration are comprised the following steps：
(1) single phase poaer supply is powered, and semaphore is：Rated voltage Un, rated current Ib, power factor (PF) PF are 0.5, wait electricity
Source is stable；
(2) loading single-phase electric energy meter put in table restitope, it is ready that the inductive switch at table support back detects electric energy meter,
Stage body control module control air pump crimping table support carries single-phase electric meter and enters operating position together；Calibration Program reset error instrument,
Error instrument starts to calculate pulse per second (PPS), and calibration program initialization electric energy meter computation chip issues calibration basic parameter；
(3) calibration program reads：
A, the voltage effective value register of single-phase electric energy meter, current effective value register, the effective value register of power etc. are joined
Number；
B, the current voltage value of reading single phase poaer supply, current value, active power and reactive power value etc., and according to this
A little parameters calculate the voltage conversion coefficient mated by electric energy meter, electric current conversion coefficient, active conversion coefficient etc., are handed down to electric energy
Table, is stored in the storage region of electric energy meter；
(4) calibration program reads the active power value (Preal) of single phase poaer supply, reactive power value (Qreal), reads electric energy
The active power register value (PowerP1) of table computation chip measurement, reactive power register (PowerQ1)；According to these values,
The calculating angular difference corrected value and power gain corrected value of electric energy meter is calculated, electric energy meter is handed down to, is stored in the storage of electric energy meter
Region；
(5) the power error method in the case of calibration electric energy meter small-power：The single-phase electric energy meter of statistics small lot is in little work(
Error amount in the case of rate, calculates their mean value, as the low-power level signal of this batch of single-phase meter under unified check value, under
Electric energy meter is issued, to reach the purpose of calibration small-power error amount；
(6) the pulse per second (PPS) error of reading error instrument, calculates pulse per second (PPS) calibration parameter and is handed down to electric energy meter, calibrate diary mistiming
Difference；
(7) the collection signal of switching error instrument be electric pulse signal, set error instrument, check electric energy meter error in dipping
Whether calibrate, and whether the parameter for checking the electric energy meter such as voltage x current power of electric energy meter indicating value related is correct；
(8) stage body control module control air pump exits electric energy meter, manually removes electric energy meter from table support；According to previous step
Assay judges whether that verification is normal, and the good electric energy meter in school enters next inspection process；Problematic electric energy meter enters dimension
Repair department；And make a record and track.
(9) electric energy meter of verification also not completed is checked whether, if it has, coming back to second step；If without,
Single phase poaer supply voltage and current, pass hull closure power supply and computer is fallen, stops calibration.
As preferred, present invention air pump as power, without the need for elastic state's net single-phase electric energy meter terminal screw, electric energy
Inductive switch is installed behind table epi-position, when state's net electric energy meter is put in state's net electric energy meter support, triggers inductive switch, stage body
State's net electric energy meter is pressed into operating position, state's net connection box of electric energy meter post with table support by control module control air-pump inflating acting
Voltage and current is connected, electric energy meter is started working；After the completion of electric energy meter calibrating work, calibration software program notifies stage body control
Module controls air pump, and electric energy meter is deactivated position with table support, comes back to position when dress table, separates single phase poaer supply.
As preferred, stage body control module free switching current loop of the present invention, when electric energy meter separates single phase poaer supply
When, stage body control module switching electric current is internal wiring loop；When electric energy meter switches on power with table support, stage body is controlled
Module is switched on outside line loop；In handoff procedure, source current output keeps stable.
It is an advantage of the invention that：Compared with prior art, the present invention improves the speed of calibration, improving yield；Accurate school
The time-of-day clock error and electricity error of quasi- electric energy meter；The basic parameter of electric energy meter is can verify that, common hardware problem is found；With
The production process of track electric energy meter, and the key parameter in electric energy meter calibration process is recorded, data can be tracked；In not Switching power
In the case of, the mode according to power calibrates the error of table, reduces switching and stand-by period.
With reference to Figure of description and specific embodiment, the invention will be further described.
Description of the drawings
Calibration flow charts of the Fig. 1 for the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of single-phase electric energy meter production line automation correction method disclosed by the invention, using calibration equipment,
The calibration equipment hardware includes single-phase standard scale, error instrument, single phase poaer supply, state's net single-phase electric energy meter support, gas pump power source pressure
Connection device, stage body control module etc., automation calibration are comprised the following steps：
(1) single phase poaer supply is powered, and semaphore is：Rated voltage Un, rated current Ib, power factor (PF) PF are 0.5, wait electricity
Source is stable.
(2) loading single-phase electric energy meter is put in table restitope, it is ready that table support back inductive switch detects electric energy meter, platform
Body control module control air pump crimping table support carries single-phase electric meter and enters operating position together. calibration Program reset error instrument, by mistake
Difference instrument starts to calculate pulse per second (PPS), and calibration program initialization electric energy meter computation chip issues calibration basic parameter；
(3) calibration program reads：The voltage effective value register of a single-phase electric energy meters, current effective value register, power have
The parameters such as valid value register, the current voltage value of b reading single phase poaer supplies, current value, active power and reactive power value etc., and
And the voltage conversion coefficient mated by electric energy meter, electric current conversion coefficient, active conversion coefficient etc. is calculated according to these parameters, under
Electric energy meter is issued, the storage region of electric energy meter is stored in；
(4) calibration program reads the active power value (Preal) of single phase poaer supply, reactive power value (Qreal), reads electric energy
The active power register value (PowerP1) of table computation chip measurement, reactive power register (PowerQ1).According to these values,
The calculating angular difference corrected value and power gain corrected value of electric energy meter is calculated, electric energy meter is handed down to, is stored in the storage of electric energy meter
Region；
(5) the power error method in the case of calibration electric energy meter small-power：The single-phase electric energy meter of statistics small lot is in little work(
Error amount in the case of rate, calculates their mean value, as the low-power level signal of this batch of single-phase meter under unified check value, under
Table is issued, to reach the purpose of calibration small-power error amount.
(6) the pulse per second (PPS) error of reading error instrument, calculates pulse per second (PPS) calibration parameter and is handed down to table, calibration day timing error；
(7) the collection signal of switching error instrument be electric pulse signal, set error instrument, check electric energy meter error in dipping
Whether calibrate, and whether the parameter for checking the electric energy meter such as voltage x current power of electric energy meter indicating value related is correct.
(8) stage body control module control air pump exits electric energy meter, manually removes electric energy meter from table support.According to previous step
Assay judges whether that verification is normal, and the good electric energy meter in school enters next inspection process；Problematic electric energy meter enters dimension
Department is repaiied, and is made a record and is tracked.
(9) electric energy meter of verification also not completed is checked whether, if it has, coming back to second step；If without,
Single phase poaer supply voltage and current, pass hull closure power supply and computer is fallen, stops calibration.
As preferred, present invention air pump as power, without the need for elastic state's net single-phase electric energy meter terminal screw, electric energy
Inductive switch is installed behind table epi-position, when state's net electric energy meter is put in state's net electric energy meter support, triggers inductive switch, stage body
State's net electric energy meter is pressed into operating position, state's net connection box of electric energy meter post with table support by control module control air-pump inflating acting
Voltage and current is connected, electric energy meter is started working；After the completion of electric energy meter calibrating work, calibration software program notifies stage body control
Module controls air pump, and electric energy meter is deactivated position with table support, comes back to position when dress table, separates single phase poaer supply.
Stage body control module free switching current loop as needed, when electric energy meter separates single phase poaer supply, stage body
Control module switching electric current is internal wiring loop；When electric energy meter switches on power with table support, stage body control module switches
Connect outside line loop；I.e. through the connection circuit of electric energy meter.In handoff procedure, source current output keeps stable.
Computational methods according to the present invention, formula and principle：
(1) conversion coefficient computing formula.Single phase poaer supply up voltage is normal voltage, and electric current is normalized current, power factor (PF)
When FP is 0.5, the value of the voltage effective value register of electric energy meter computation chip measurement is Rms_U, current effective value register
It is worth for Rms_I1, the value of the effective value register of active power is PowerP1.Then voltage conversion COEFFICIENT K rms_U, electric current conversion system
Number Krms_I1, power conversion coefficient Kpqs computing formula are as follows：
Krms_U=Un/Rms_U
Note：Krms_U：The voltage conversion coefficient of single-phase electric energy meter.Un：The voltage indicating value that current single phase poaer supply is provided.Rms_
U:The value of the voltage effective value register of single-phase electric energy meter.Voltage conversion coefficient, the coefficient are multiplied i.e. with the value of voltage register
Obtain the voltage (V) being input into.
Krms_I1=Ib/Rms_I1
Note：Krms_I1：The electric current conversion coefficient of single-phase electric energy meter.Ib：The electric current indicating value that current single phase poaer supply is provided.
Rms_I1:The value of the current effective value register of single-phase electric energy meter.Electric current conversion coefficient, the value phase of the coefficient and electric current register
Take advantage of the current value (A) for obtaining being input into
Kp=Un*Ib*PF/PowerP1
Note：Un：The voltage indicating value that current single phase poaer supply is provided.Ib：The electric current indicating value that current single phase poaer supply is provided.PF：When
The active power factor that front single phase poaer supply is provided.PowerP1:The value of the effective value register of the active power of single-phase electric energy meter.Kp：
The power conversion coefficient of single-phase electric energy meter.Power conversion coefficient, the coefficient are multiplied with the value of power register and obtain input
Performance number (W).
(2) power gain and phase calculation method：
Read current single phase poaer supply active power value be Preal, reactive power value be Qreal, electric energy meter survey
The active power register value of amount is PowerP1, reactive power register value PowerQ1
A () calculates angular difference corrected value
θ=(Preal × PowerQ1-PoweP1 × Qreal)/(PoweP1 × Preal+PowerQ1 × Qreal)
Note：Preal：The active power value of single phase poaer supply.Qreal：The reactive power value of single phase poaer supply.PowerP1：Electric energy
The active power register value of table measurement.PowerQ1：The reactive power register value of electric energy meter measurement.θ：Electric energy meter measurement
Angular error.
B () calculates performance number P' after correction angular difference
PowerP'=PowerP+PowerQ × θ
P'=PowerP' × Kp
Note：Kp：The power conversion coefficient of single-phase electric energy meter.PowerP：The active power register value of electric energy meter measurement.
PowerQ：The reactive power register value of electric energy meter measurement.θ：The angular error of electric energy meter measurement.P ＇：The school of single-phase electric energy meter
Measurement performance number after positive angular difference.
(c) power gain error
Pgain=Preal/P'-1
Note：Preal：The performance number of single phase poaer supply, P ＇：Measurement performance number after single-phase electric energy meter correction angular difference.Pgain：
The power gain error amount of single-phase electric energy meter.
Below by taking 7017 computation chip of huge spring as an example：
Computing formula is as follows, and Biao Tai adds UnIb, reads voltage effective value Rms_U, the current effective value Rms_ of computation chip
I1, calculates：
KrmsU=Un/Rms_U
Voltage conversion coefficient, the coefficient are multiplied with the value of voltage register and obtain the voltage (V) of input
Krms_I1=Ib/Rms_I1
Electric current conversion coefficient, the coefficient are multiplied with the value of electric current register and obtain the current value (A) of input
Kp=5.625 × 10^10/ (HFConst × EC × 2^23)
EC:Electric meter constant；
Power conversion coefficient, the coefficient are multiplied with the value of power register and obtain the performance number (W) of input.
Gain and phase place single point correction
Host computer reads active-power P real, the reactive power value Qreal of table standard table, reads ammeter computation chip
Active, reactive power register value PowerP1, PowerQ1
A () calculates angular difference corrected value
θ=(Preal × PowerQ1-PoweP1 × Qreal)/(PoweP1 × Preal+PowerQ1 × Qreal)
If θ ＞=0, Gphs1=INT [θ × 215]
Otherwise θ ＜ 0, Gphs1=INT [216+θ×215]
The Gphs1 values for obtaining are changed into HEX values write 6DH (Gphs1) register.
B () calculates performance number P' after correction angular difference
PowerP'=PowerP+PowerQ × θ
P'=PowerP' × Kp
Kp power conversion coefficients；
(c) power gain corrected value
Pgain=Preal/P'-1
If Pgain>=0, then GP=INT [Pgain × 215]
Otherwise Pgain<0, then GP=INT [216+Pgain×215]
Small signal power calibrates for error.By way of data statistics, small-signal amount power bias error is calculated (i.e. current
The noise error of this batch of pcb plate)；
Pulse per second (PPS) error is read, and calibrates a second clocking error；
Switching electricity error sampling cross-talk, set error instrument check whether error calibrates.And check voltage x current power
Deng the related parameter of metering.
This new invention is significantly improved than traditional technique, improves operating efficiency, reduces workshop using empty
Between, it is to avoid the damage that transports during calibration, mitigate the everyways such as the workload of workman and take obvious effect.Main summary
Following some：
1st, improve the speed of calibration, improving yield, from original 90-120 only/people/hour, bring up to 320-420 only/
People/hour.
2nd, the time-of-day clock error and electricity error of accurate alignment electric energy meter
3rd, the basic parameter of electric energy meter is checked, common hardware problem is found
4th, the production process of electric energy meter is tracked, and records the key parameter in electric energy meter calibration process, data can be tracked.
In addition, a kind of present invention new single-phase compact power of repacking, with the mode of single-point, i.e. not Switching power situation
Under, the mode according to power calibrates the error of table, reduces switching and stand-by period.
The equipment of this invention repacking must possess several features as follows：
(1) with air pump as power, without the need for elastic bottom screw, using infrared self-induction induction method, it is pressed into automatically and exits
Electric energy meter；
(2) voltage source is exited electric energy meter and is proceeded to electric energy meter by isolating transformer out-put supply, and power supply can keep steady
Fixed, will not because of unloaded or load fluctuation or open circuit and report to the police, A, channel B are all concurrently accessed electric current, it is not necessary to
Switching channel；
(3) replaceable table support, can change different table supports, be suitable for the chi of various intelligent electric energy meters to different electric energy meters
The very little and mode of connection, acquisition pulse cross-talk is controllable and switches.And can prepare to measure day timing error and electricity error.
Specific descriptions of the above-described embodiment to the present invention, are served only for being further described the present invention, it is impossible to be interpreted as
Limiting the scope of the present invention, it is non-that the technician of this area makes some according to the content of foregoing invention to the present invention
The modifications and adaptations of essence are each fallen within protection scope of the present invention.
Claims (3)
1. a kind of single-phase electric energy meter production line automation correction method, using calibration equipment, the calibration equipment hardware includes single-phase
Standard scale, error instrument, single phase poaer supply, state's net single-phase electric energy meter support, gas pump power source compression bonding apparatus and stage body control module, its
It is characterised by：Automation calibration is comprised the following steps：
(1) single phase poaer supply is powered, and semaphore is：Rated voltage Un, rated current Ib, power factor (PF) PF are 0.5, wait power supply steady
Fixed；
(2) loading single-phase electric energy meter put in table restitope, it is ready that the inductive switch at table support back detects electric energy meter, stage body
Control module control air pump crimping table support carries single-phase electric meter and enters operating position together；Calibration Program reset error instrument, error
Instrument starts to calculate pulse per second (PPS), and calibration program initialization electric energy meter computation chip issues calibration basic parameter；
(3) calibration program reads：
The parameters such as a, the voltage effective value register of single-phase electric energy meter, current effective value register, the effective value register of power；
B, the current voltage value of reading single phase poaer supply, current value, active power and reactive power value etc., and according to these ginsengs
Number calculates the voltage conversion coefficient mated by electric energy meter, electric current conversion coefficient, active conversion coefficient etc., is handed down to electric energy meter,
It is stored in the storage region of electric energy meter；
(4) calibration program reads the active power value (Preal) of single phase poaer supply, reactive power value (Qreal), reading power meters meter
The active power register value (PowerP1) of amount chip measurement, reactive power register (PowerQ1)；According to these values, calculate
Go out the calculating angular difference corrected value and power gain corrected value of electric energy meter, be handed down to electric energy meter, be stored in the storage region of electric energy meter；
(5) the power error method in the case of calibration electric energy meter small-power：The single-phase electric energy meter of statistics small lot is in small-power feelings
Error amount under condition, calculates their mean value, as the low-power level signal of this batch of single-phase meter under unified check value, be handed down to
Electric energy meter, to reach the purpose of calibration small-power error amount；
(6) the pulse per second (PPS) error of reading error instrument, calculates pulse per second (PPS) calibration parameter and is handed down to electric energy meter, calibration day timing error；
(7) the collection signal of switching error instrument is electric pulse signal, and whether set error instrument checks the error in dipping of electric energy meter
Calibration, and whether the parameter for checking the electric energy meter such as voltage x current power of electric energy meter indicating value related is correct；
(8) stage body control module control air pump exits electric energy meter, manually removes electric energy meter from table support；Inspection according to previous step
As a result judge whether that verification is normal, the good electric energy meter in school enters next inspection process；Problematic electric energy meter enters maintenance department
Door；And make a record and track.
(9) electric energy meter of verification also not completed is checked whether, if it has, coming back to second step；If without falling
Single phase poaer supply voltage and current, pass hull closure power supply and computer, stop calibration.
2. a kind of single-phase electric energy meter production line automation correction method according to claim 1, it is characterised in that：Use air pump
As power, without the need for elastic state's net single-phase electric energy meter terminal screw, inductive switch is installed behind electric energy meter epi-position, when state's net
When electric energy meter is put in state's net electric energy meter support, inductive switch is triggered, the control air-pump inflating acting of stage body control module, by state's net
Electric energy meter is pressed into operating position with table support, and voltage and current connected by state's net connection box of electric energy meter post, and electric energy meter is started working；When
After the completion of electric energy meter calibrating work, calibration software program notifies stage body control module control air pump, and electric energy meter is exited with table support
Operating position, comes back to position when dress table, separates single phase poaer supply.
3. a kind of single-phase electric energy meter production line automation correction method according to claim 2, it is characterised in that：Stage body control
Molding block free switching current loop, when electric energy meter separates single phase poaer supply, stage body control module switching electric current is inside
Line loop；When electric energy meter switches on power with table support, stage body control module is switched on outside line loop；In switching
During, source current output keeps stable.
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| CN108008341A (en) * | 2017-12-25 | 2018-05-08 | 黑龙江龙电电气有限公司 | A kind of adjusting process of electric energy meter |
| CN108303667A (en) * | 2018-04-28 | 2018-07-20 | 宁波三星医疗电气股份有限公司 | A kind of total detecting method of electric power terminal calibration |
| CN108490382A (en) * | 2018-04-04 | 2018-09-04 | 山东计保电气有限公司 | High-voltage electric energy meter metering plate remote online method of calibration and system |
| CN111537944A (en) * | 2020-05-20 | 2020-08-14 | 南京能瑞自动化设备股份有限公司 | Calibration parameter determination method, microcontroller, metering chip and upper computer |
| CN113050021A (en) * | 2021-06-01 | 2021-06-29 | 杭州炬华科技股份有限公司 | System and method for calibrating metering error and daily timing error based on same LED lamp |
| CN113176531A (en) * | 2021-05-24 | 2021-07-27 | 苏州大学 | Passive calibration method of intelligent electric meter |
| CN114089266A (en) * | 2022-01-21 | 2022-02-25 | 杭州炬华科技股份有限公司 | Meter calibration method and system suitable for single-phase double-loop electric energy meter |
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