CN109406849A - A kind of acquisition control module and method of multi-user pre-payment electric energy meter - Google Patents
A kind of acquisition control module and method of multi-user pre-payment electric energy meter Download PDFInfo
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- CN109406849A CN109406849A CN201910010221.XA CN201910010221A CN109406849A CN 109406849 A CN109406849 A CN 109406849A CN 201910010221 A CN201910010221 A CN 201910010221A CN 109406849 A CN109406849 A CN 109406849A
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- 238000000034 method Methods 0.000 title claims description 15
- 238000003860 storage Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 4
- 241000283690 Bos taurus Species 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000003466 welding Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention relates to a kind of acquisition control modules of multi-user pre-payment electric energy meter, including wiring board, magnetic latching relay, current transformer, metering chip, storage chip, first socket and the second socket, the magnetic latching relay is equipped with the first connection strap and the second connection strap, first connection strap is equipped with the first aciculiform protrusion pin, second connection strap is equipped with the second aciculiform protrusion pin, it connects flexible cord and passes through current transformer and the welding of the second connection strap, the current transformer is stuck in the aperture of wiring board, the magnetic latching relay is welded by the first aciculiform protrusion pin and the second aciculiform protrusion pin and wiring board.The measurement single-phase electric parameter of three-phase or three tunnels and pre-payment power-off, power transmission function all the way may be implemented in the present invention；Every road electric current, voltage signal acquisition have independent metering chip to handle, and compared to single metering chip scheme, measurement is all real-time, true electric parameter, and measurement accuracy is higher more reliable.
Description
Technical field
The present invention relates to electric instrument technical fields, and in particular to a kind of acquisition control mould of multi-user pre-payment electric energy meter
Block and method.
Background technique
Currently, most of centralization multiuser electric energy meters concentrate the scheme of measurement using a metering chip.See patent
201320720089.X and 201520072912.X, they are all to switch multichannel user electric current using logic chip (electronic switch)
Signal, then single channel exports, and is transferred to the design scheme of metering chip, guarantees measuring accuracy by software optimization.Using this
The instrument of scheme has following defect:
1, in terms of measurement accuracy, instrument is not the true electricity consumption data of metering.When electronic switch is switched to active user, other use
The current data at family does not acquire, and is in unknown state, the current data of this period can only be according to the preceding number once measured
It is handled according to software optimization, if this period, current data changed, instrument be can't detect, inaccurate so as to cause metering.
2, structurally, layout is complicated, production efficiency is not high, while increasing cost of labor.Single metering chip scheme must
It so will lead to current signal collection plate and metering chip wiring board separately design, being connected with each other and install fixation will increase structure
Design difficulty.
3, it is said from reliability, current sample needs to summarize by many long leads or by wiring board by contact pin socket
To the wiring board that metering chip is housed, lead is long, and quantity is more, and the factors such as connection can all increase instrument unreliability between wiring board
Factor.
4, in terms of after-sales service, maintainability is poor.Instrument inevitably has component damage situation, to guarantee that precision is up to standard, electric current
The electric parameters such as voltage need to use standard source assisted calibration, and can only give an encore maintenance, and whole table is needed to exchange, and multi-user's measuring instrument is all
It is metal material, volume is again heavy greatly, and express delivery is costly, increases after cost.
Working leading role's degree sees that economic interests and personal safety have risk of damage.Single metering chip scheme only detects bus electricity
Pressure, each user's branch voltage unable to monitor, owner cannot intuitively know each branch current power state.If certain user is in
Arrearage state, current magnetic latching relay should be off-state, but because magnetic keeps magnetic latching relay faulty, contact is viscous
Even, it can not power off, user can also continue normal electricity consumption, and owner cannot know that economic interests cannot ensure in time.If such feelings
Under condition, owner thinks to have powered off, and goes to repair operation, can be in peril of one's life.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of acquisition control moulds of multi-user pre-payment electric energy meter
Block, measurement may be implemented, and the single-phase electric parameter (electric current, voltage, power, electric energy) and pre-payment of three-phase or three tunnels is disconnected all the way
Electricity, power transmission function.
The object of the present invention is achieved like this:
A kind of acquisition control module of multi-user pre-payment electric energy meter, including wiring board, magnetic latching relay, current transformer,
Metering chip, storage chip, the first socket and the second socket, the magnetic latching relay are equipped with the first connection strap and the second connection
Item, first connection strap are equipped with the first aciculiform protrusion pin, and second connection strap is equipped with the second aciculiform protrusion pin,
It connects flexible cord and passes through current transformer and the welding of the second connection strap, the current transformer is stuck in the aperture of wiring board, described
Magnetic latching relay is welded by the first aciculiform protrusion pin and the second aciculiform protrusion pin and wiring board；The current transformer
Secondary side terminal pin connect with metering chip, the metering chip is set there are two pulse delivery outlet, a pulse delivery outlet
It is connect with the first socket, another pulse delivery outlet is connect with the second socket.
Preferably, the metering chip is three phase metering chip, measures three-phase electric energy or three road unidirectional electric energies all the way.
Preferably, there are three the magnetic latching relay is set, there are three the current transformer is set, a magnetic keeps relay
Device corresponds to a current transformer.
Preferably, first socket is cattle horn socket, is connected to display board by soft arranging wire, transmits metering core the piece number
According to, storage chip calibration data, magnetic latching relay control signal to the main process task chip on display board.
Preferably, the secondary side terminal pin of the current transformer provides electric current, second aciculiform for metering chip
Raised pin provides voltage for metering chip.
Preferably, the magnetic latching relay is additionally provided with the first driving pin and the second driving pin.
A kind of collection control method of multi-user pre-payment electric energy meter, using above-mentioned module, control method is as follows:
First driving pin and the second driving pin closure, take voltage from magnetic latching relay the second aciculiform protrusion pin, from electricity
The secondary side plug obtaining current of current transformer inputs metering chip processing after sampling filter；Metering chip exports after calculating
Active pulse all the way, the active pulse branch are exported all the way at two-way to the second socket, another output to the first socket,
It is ultimately connected to instrument external-connected port by winding displacement, while pulse indicator light flashes work；The data-signal of metering chip first passes
The first socket is transported to, MCU single-chip microcontroller is transmitted to by soft arranging wire connection.
The beneficial effects of the present invention are:
The measurement single-phase electric parameter of three-phase or three tunnels and pre-payment power-off, power transmission function all the way may be implemented in the present invention；Often
Road electric current, voltage signal acquisition have independent metering chip to handle, and compared to single metering chip scheme, measurement is all real
When, true electric parameter, measurement accuracy is higher more reliable.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the rearview of Fig. 1.
Fig. 3 is the structural schematic diagram of magnetic latching relay.
Fig. 4 is control method block diagram of the invention.
Wherein: magnetic latching relay 1；First connection strap 2；First aciculiform protrusion pin 21；Connect flexible cord 3；Second connection
Item 4；Second aciculiform protrusion pin 41；First driving pin 5；Second driving pin 6；Current transformer 7；Secondary side terminal pin
8；Metering chip 9；Storage chip 10；First socket 11, pulse indicator light 12；Second socket 13；Wiring board 14；Aperture 15.
Specific embodiment
Referring to figures 1-4, the present invention relates to a kind of acquisition control modules of multi-user pre-payment electric energy meter, including wiring board
14, magnetic latching relay 1, current transformer 7, metering chip 9, storage chip 10, the first socket 11 and the second socket 13, it is described
Magnetic latching relay 1 is equipped with the first connection strap 2 and the second connection strap 4, and first connection strap 2 is equipped with the first aciculiform protrusion and draws
Foot 21, second connection strap 4 are equipped with the second aciculiform protrusion pin 41, and connection flexible cord 3 passes through current transformer 7 and second and connects
Narrow bars 4 are welded, and the current transformer is stuck in the aperture 15 of wiring board 14, and the aperture has designed position-limiting action, prevents electricity
Current transformer is mobile.The connection flexible cord 3 is subscriber branch line, is connect with the outgoing line terminal board in instrument.The magnetic keeps relay
Device 1 is welded by the first aciculiform protrusion pin 21 and the second aciculiform protrusion pin 41 with wiring board 14；The current transformer 7
Secondary side terminal pin 8 is connect with metering chip 9, provides current sample for metering chip.The metering chip 9 is set there are two arteries and veins
Delivery outlet is rushed, a pulse delivery outlet is connect with the first socket 11, another pulse delivery outlet is connect with the second socket 13.
The metering chip 9 is three phase metering chip, measures three-phase electric energy or three road unidirectional electric energies all the way.
There are three the magnetic latching relay 1 is set, there are three the current transformer 7 is set, a magnetic latching relay 1 is right
Answer a current transformer 7.Through-hole there are two setting on first connection strap 2 of each magnetic latching relay 1, passes through through-hole and instrument
Interior copper bar tightens fixation.
The storage chip 10 stores electric parameter calibration data in the chips.
First socket 11 is cattle horn socket, is connected to display board, transmission metering chip data, storage by soft arranging wire
Chip calibration data, magnetic latching relay control signal are to the main process task chip on display board.Second socket 13 is for benefit
The independent electric energy precision of module may be implemented with outside cooperation tooling to examine, not needing cooperation complete machine instrument could examine.In addition, inserting
Seat can also be substituted with contact pin.
The secondary side terminal pin 8 of the current transformer 7 is that metering chip 9 provides electric current, the second aciculiform protrusion
Pin 41 is that metering chip 9 provides voltage.
The magnetic latching relay 1 is additionally provided with the first driving pin 5 and the second driving pin 6.The first aciculiform protrusion
Pin 21, the second aciculiform protrusion pin 41 and the first driving pin 5, second drive on 6 synchronous welding to wiring board of pin, make magnetic
Guard relay 1 and wiring board 14 are fixed, realize module being reliably fixed in entire instrument.When the first driving pin 5 and the
Two driving pins 6 are closed, and metering chip 9 starts collection voltages and electric current.Even if user load is unloaded or electric current is set less than instrument
When the starting current set, relay opening and closing state also can be still judged by voltage signal data.
A kind of collection control method of multi-user pre-payment electric energy meter, using above-mentioned module, control method is as follows:
First driving pin 5 and the second driving pin 6 are closed, and take voltage from magnetic latching relay the second aciculiform protrusion pin 41,
From 8 obtaining current of secondary side plug of current transformer, metering chip 9 is inputted after sampling filter and is handled；Metering chip calculates
After export active pulse all the way, the active pulse branch is exported all the way at two-way to the second socket 13, be used for the independent school of module
Standard, another output to the first socket 11 are ultimately connected to instrument external-connected port by winding displacement, while pulse indicator light 12 flashes
Work；The data-signal of metering chip is first transmitted to the first socket 11, is transmitted to MCU single-chip microcontroller by soft arranging wire connection.Pass through
The connection of first socket 11 and MCU single-chip microcontroller realizes the power-off of magnetic latching relay and the control of power transmission, calibration data is deposited
Storage and modular power source power supply.
The present invention compares single metering chip scheme and has the advantage that
1, every road electric current, voltage signal acquisition have independent metering chip to handle, compared to single metering chip scheme, measurement
It is all real-time, true electric parameter, measurement accuracy is higher more reliable.
2, clear in structure and ingenious, acquisition and control function 1 road three-phase or the single-phase user in 3 tunnels concentrate on one piece of line
Road plate.Using special magnetic latching relay, wiring board aperture processing, cleverly realize mutual inductor it is fixed in the circuit board and
Module and instrument cabinet are connected and fixed.Connection flexible cord of the invention and magnetic latching relay are welded as a whole, circuit board quantity with
It is all directly proportional that structure process, production, which spend time, cost of labor,.In contrast, individual module of the invention only needs to utilize 3
One end of a special magnetic latching relay pin can be achieved with being reliably connected for module and instrument cabinet, and structure is more clear, and use
Amount amount is more, and contrast effect is more obvious.
3, current signal is connected on module circuitry plate by Current Transformer Secondary side conducting wire, and voltage signal is kept from magnetic
The pin of relay acquires.Signal is directly handled in module by metering chip.Compared to single metering chip scheme, current signal
Without drawing very long cabling from signal plate, the wiring board with metering chip is connected to by contact pin socket.Signal will not be by line
Length, the influence of wiring board substitute mode, measurement accuracy are more secure.Production technology complexity bring production matter is reduced simultaneously
Measure risk.
4, there is 1 storage chip in module, the calibration parameter of electric parameter data can store inside.In practical application,
Electronic component inevitably have substandard products or manual operation it is improper cause damage the case where, will appear miscellaneous quality in this way and ask
Topic.By single metering chip scheme, after-sales staff is can not to handle in curstomer's site, because calibration data is all to deposit in main module
(wiring board for having single-chip microcontroller), metering need that debugging calibration is gone just to can guarantee measuring accuracy, either acquisition mould using standard source
Block, metering chip module or one-chip computer module damage, all can only depot repair.In contrast, it is deposited in module of the invention
Store up chip, the corresponding calibration parameter storage of each module wherein, the case where after-sales staff can be according to client feedback, is directed to
The carrying wiring board of property goes curstomer's site to exchange.It reduces after cost and improves efficiency after sale.
5, the voltage signal in module is acquired from magnetic latching relay switch contact rear end (leading-out terminal), when relay is disconnected
When opening, contact rear end does not have voltage, and the voltage value of metering chip acquisition is 0V, when relay closure, relay contact inlet wire
End and leading-out terminal conducting, metering chip can collect user's voltage, can accurately judge that magnetic keeps relay using this point
Device opening and closing state.And single metering chip scheme only measures the voltage on main road copper bar, monitors less than each tributary user voltage.
If the quality problems that contact is adhered occurs in magnetic latching relay, owner can not know in time.User can continue electricity consumption, owner
Interests cannot ensure.And in this case, if owner has powered off from arrearage situation, user does not have electricity consumption at this time,
Electric current repairs operation for 0, can be in peril of one's life.In contrast, it is while the present invention can remind owner's guarantee interests
Attended operation personnel provide safety guarantee, improve the market competitiveness of multiuser electric energy meter.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiments
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (7)
1. a kind of acquisition control module of multi-user pre-payment electric energy meter, it is characterised in that: including wiring board (14), magnetic keep after
Electric appliance (1), current transformer (7), metering chip (9), storage chip (10), the first socket (11) and the second socket (13), institute
Magnetic latching relay (1) is stated equipped with the first connection strap (2) and the second connection strap (4), first connection strap (2) is equipped with first
Aciculiform protrusion pin (21), second connection strap (4) are equipped with the second aciculiform protrusion pin (41), and connection flexible cord (3) passes through
Current transformer (7) and the second connection strap (4) are welded, and the current transformer is stuck in the aperture (15) of wiring board (14), institute
Magnetic latching relay (1) is stated to weld by the first aciculiform protrusion pin (21) and the second aciculiform protrusion pin (41) and wiring board (14)
It connects；The secondary side terminal pin (8) of the current transformer (7) is connect with metering chip (9), and the metering chip (9) is equipped with
Two pulse delivery outlets, a pulse delivery outlet are connect with the first socket (11), another pulse delivery outlet and the second socket
(13) it connects.
2. a kind of acquisition control module of multi-user pre-payment electric energy meter according to claim 1, it is characterised in that: described
Metering chip (9) is three phase metering chip, measures three-phase electric energy or three road unidirectional electric energies all the way.
3. a kind of acquisition control module of multi-user pre-payment electric energy meter according to claim 1 or 2, it is characterised in that:
There are three the magnetic latching relay (1) sets, there are three the current transformer (7) sets, a magnetic latching relay (1) is corresponding
One current transformer (7).
4. a kind of acquisition control module of multi-user pre-payment electric energy meter according to claim 1, it is characterised in that: described
First socket (11) is cattle horn socket, is connected to display board by soft arranging wire, transmission metering chip data, storage chip calibrate number
According to, magnetic latching relay control signal to the main process task chip on display board.
5. a kind of acquisition control module of multi-user pre-payment electric energy meter according to claim 1, it is characterised in that: described
The secondary side terminal pin (8) of current transformer (7) is that metering chip (9) provide electric current, the second aciculiform protrusion pin
(41) voltage is provided for metering chip (9).
6. a kind of acquisition control module of multi-user pre-payment electric energy meter according to claim 1, it is characterised in that: described
Magnetic latching relay (1) is additionally provided with the first driving pin (5) and the second driving pin (6).
7. a kind of collection control method of multi-user pre-payment electric energy meter, it is characterised in that: using described in one of claim 1-6
Module, control method is as follows:
First driving pin (5) and the second driving pin (6) closure, take from magnetic latching relay the second aciculiform protrusion pin (41)
Voltage inputs metering chip (9) processing from secondary side plug (8) obtaining current of current transformer after sampling filter；Metering
Chip exports active pulse all the way after calculating, and the active pulse branch is exported all the way at two-way to the second socket (13), another
Road is exported to the first socket (11), is ultimately connected to instrument external-connected port by winding displacement, while pulse indicator light (12) flashes work
Make；The data-signal of metering chip is first transmitted to the first socket (11), is transmitted to MCU single-chip microcontroller by soft arranging wire connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910010221.XA CN109406849A (en) | 2019-01-07 | 2019-01-07 | A kind of acquisition control module and method of multi-user pre-payment electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910010221.XA CN109406849A (en) | 2019-01-07 | 2019-01-07 | A kind of acquisition control module and method of multi-user pre-payment electric energy meter |
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| CN109406849A true CN109406849A (en) | 2019-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345166A (en) * | 2020-02-18 | 2021-09-03 | 安科瑞电气股份有限公司 | Guide rail type prepayment electric energy meter |
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