CN209486158U - A kind of acquisition control module of multi-user pre-payment electric energy meter - Google Patents
A kind of acquisition control module of multi-user pre-payment electric energy meter Download PDFInfo
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- CN209486158U CN209486158U CN201920015898.8U CN201920015898U CN209486158U CN 209486158 U CN209486158 U CN 209486158U CN 201920015898 U CN201920015898 U CN 201920015898U CN 209486158 U CN209486158 U CN 209486158U
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- metering chip
- aciculiform
- current transformer
- latching relay
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Abstract
The utility model 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 utility model；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 utility model relates to electric instrument technical fields, and in particular to a kind of acquisition control of multi-user pre-payment electric energy meter
Molding block.
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,
The current data of his user does not acquire, and is in unknown state, and the current data of this period can only once be measured according to preceding
Data software optimization processing, 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.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of acquisition controls of multi-user pre-payment electric energy meter
Molding block may be implemented to measure the single-phase electric parameter (electric current, voltage, power, electric energy) of three-phase all the way or three tunnels and prepay
Take power-off, power transmission function.
Purpose of the utility model is realized as follows:
A kind of acquisition control module of multi-user pre-payment electric energy meter, including wiring board, magnetic latching relay, Current Mutual Inductance
Device, metering chip, storage chip, the first socket and the second socket, the magnetic latching relay are equipped with the first connection strap and second
Connection strap, first connection strap are equipped with the first aciculiform protrusion pin, and second connection strap is equipped with the second aciculiform protrusion
Pin, connection flexible cord passes through current transformer and the second connection strap welds, and 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 electric current is mutual
The secondary side terminal pin of sensor is connect with metering chip, and the metering chip is set there are two pulse delivery outlet, and a pulse is defeated
Outlet 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.
The beneficial effects of the utility model are:
The measurement single-phase electric parameter of three-phase or three tunnels and pre-payment power-off, power transmission all the way may be implemented in the utility model
Function；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.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the rearview of Fig. 1.
Fig. 3 is the structural schematic diagram of magnetic latching relay.
Fig. 4 is the control method block diagram of the utility model.
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 utility model relates to a kind of acquisition control modules of multi-user pre-payment electric energy meter, including line
Road plate 14, magnetic latching relay 1, current transformer 7, metering chip 9, storage chip 10, the first socket 11 and the second socket 13,
The magnetic latching relay 1 is equipped with the first connection strap 2 and the second connection strap 4, and it is convex that first connection strap 2 is equipped with the first aciculiform
Pin 21 is played, second connection strap 4 is equipped with the second aciculiform protrusion pin 41, and connection flexible cord 3 passes through current transformer 7 and the
The welding of two connection straps 4, the current transformer are stuck in the aperture 15 of wiring board 14, and the aperture has designed position-limiting action, are prevented
Only 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 is kept
Relay 1 is welded by the first aciculiform protrusion pin 21 and the second aciculiform protrusion pin 41 with wiring board 14；The Current Mutual Inductance
The secondary side terminal pin 8 of device 7 is connect with metering chip 9, provides current sample for metering chip.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 connect
It connects.
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 electricity from magnetic latching relay the second aciculiform protrusion pin 41
Pressure inputs metering chip 9 after sampling filter and handles from 8 obtaining current of secondary side plug of current transformer；Metering chip meter
Active pulse all the way is exported after calculation, the active pulse branch is exported all the way at two-way to the second socket 13, independent for module
Calibration, another output to the first socket 11 are ultimately connected to instrument external-connected port by winding displacement, while pulse indicator light 12 dodges
Bright 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.It is logical
The connection for crossing the first socket 11 with MCU single-chip microcontroller realizes the power-off of magnetic latching relay and the control of power transmission, calibration data
Storage and modular power source power supply.
The utility model is compared single metering chip scheme and is had the advantage that
1, every road electric current, voltage signal acquisition have independent metering chip to handle, and compared to single metering chip scheme, survey
Amount is all real-time, true electric parameter, and 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.The connection flexible cord and magnetic latching relay of the utility model are welded as a whole, wiring board number
It is all directly proportional that amount, which spends time, cost of labor to structure process, production,.In contrast, the individual module of the utility model
Need to can be achieved with being reliably connected for module and instrument cabinet using one end of 3 special magnetic latching relay pins, structure is more
It is clear to add, and number of users 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, in the module of the utility model
There is a storage chip, the corresponding calibration parameter storage of each module wherein, the case where after-sales staff can be according to client feedback, has
Targetedly carrying wiring board 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, the utility model can remind owner to ensure the same of interests
When for attended operation personnel provide safety guarantee, improve the market competitiveness of multiuser electric energy meter.
In addition to the implementation, the utility model further includes having other embodiments, all to use equivalents or equivalent
The technical solution that alternative is formed, should all fall within the protection scope of the utility model claims.
Claims (6)
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920015898.8U CN209486158U (en) | 2019-01-07 | 2019-01-07 | A kind of acquisition control module of multi-user pre-payment electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920015898.8U CN209486158U (en) | 2019-01-07 | 2019-01-07 | A kind of acquisition control module of multi-user pre-payment electric energy meter |
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| CN209486158U true CN209486158U (en) | 2019-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406849A (en) * | 2019-01-07 | 2019-03-01 | 江苏安科瑞电器制造有限公司 | A kind of acquisition control module and method of multi-user pre-payment electric energy meter |
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2019
- 2019-01-07 CN CN201920015898.8U patent/CN209486158U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406849A (en) * | 2019-01-07 | 2019-03-01 | 江苏安科瑞电器制造有限公司 | A kind of acquisition control module and method of multi-user pre-payment electric energy meter |
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