CN107219394A - A kind of electric energy metered system - Google Patents
A kind of electric energy metered system Download PDFInfo
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- CN107219394A CN107219394A CN201710417425.6A CN201710417425A CN107219394A CN 107219394 A CN107219394 A CN 107219394A CN 201710417425 A CN201710417425 A CN 201710417425A CN 107219394 A CN107219394 A CN 107219394A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to technical field of electric power, a kind of electric energy metered system is disclosed.Electric energy metered system includes control device and n ammeter, live wire and the zero line connection of control device and civil power, for carrying out voltage conversion to civil power, and it is that n ammeter is powered to export direct current by its power port, each ammeter is measured to the power consumption of connected user load, and exports electric energy metrical value to control device by its first PORT COM.Power module need not be set because the electric energy of each ammeter is provided by control device, therefore inside ammeter, the volume of ammeter is reduced, be conducive to ammeter to install, and reduce cost；Simultaneously as the zero line port of n ammeter is connected to the zero line port of control device altogether by way of being sequentially connected electrically, therefore each ammeter connects the zero line of civil power without external circuit again, simplifies the wiring of whole system.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of electric energy metered system.
Background technology
Ammeter is the instrument for metering user power consumption.Existing Multi-user electrical energy metering system is by control unit
Several ammeters are controlled to be measured respectively to the power consumption of different user.Control unit and each ammeter are both needed to walk by outside
Line connects the live wire and zero line of civil power, and wiring is complicated；And include independent power module in each ammeter, for civil power to be turned
It is changed to direct current to power for its internal each functional module, because the space shared by the power module in each ammeter is larger, causes
The volume increase of whole ammeter, is unfavorable for the installation of ammeter, and cost is higher.
In summary, there is wiring complexity in existing electric energy metered system, and the volume of ammeter is larger, be unfavorable for installing, and
The problem of cost is higher.
The content of the invention
It is an object of the invention to provide a kind of electric energy metered system, it is intended to solves what existing electric energy metered system was present
Wiring is complicated, and the volume of ammeter is larger, is unfavorable for installing, and cost it is higher the problem of.
The present invention is achieved in that a kind of electric energy metered system, including control device and n ammeter, and n is positive integer；
The zero line and zero line side of the control device are connected with the live wire and zero line of civil power respectively, and the n ammeter is from the 1st ammeter
Start to (n-1)th ammeter, the second zero line port, second source port and the second PORT COM of each ammeter respectively with it is latter
The first zero line port, the first power port and the electrical connection of the first PORT COM of individual ammeter, and the 1st of the 1st ammeter the
Line end mouthful, zero line port, power port and the communication of the first power port and the first PORT COM respectively with the control device
Port is electrically connected, the first zero line port, the first power port and the first PORT COM of each ammeter respectively with its second zero line
Port, second source port and the electrical connection of the second PORT COM, the live wire input of the n ammeter connect with the live wire
Connect, the zero line side that the fire wire output end of the n ammeter is loaded with different user respectively is connected, the zero line of the user load
It is connected with the live wire；
The control device carries out voltage conversion to the civil power, and it is the n to export direct current by its power port
Individual ammeter is powered, and each ammeter is measured to the power consumption of connected user load, and passes through its first PORT COM
Electric energy metrical value is exported to the control device.
Further, the control device includes power module, the first control module, the first communication module and the second communication
Module；The power port of the control device includes positive supply port and ground port；
The negative input end and positive input terminal of the power module are respectively the zero line and zero line side of the control device, institute
The positive input terminal for stating power module is also electrically connected with the zero line port of the control device, the negative output terminal of the power module and
Positive output end is connected with the ground terminal and power end of first control module respectively, the negative output terminal of the power module and just defeated
Go out end also to electrically connect with the ground port and positive supply port of the control device respectively, the first communication of first control module
The first communication of end and the second communication terminal respectively with the first communication terminal and second communication module of first communication module
End connection, the second communication terminal of first communication module is electrically connected with the PORT COM of the control device；
Civil power described in the electric power source pair of module carries out voltage conversion, and it is first control module, institute to export direct current
State the first communication module and second communication module is powered, meanwhile, the power supply that the power module passes through the control device
Port output direct current is that the n ammeter is powered；First communication module is connect by the PORT COM of the control device
Receive the electric energy metrical value of n ammeter output, and the electric energy metrical value is sent to first control module, described the
One control module sends the electric energy metrical value to user terminal by second communication module.
Further, the control device also includes the first memory module；First memory module and the described first control
Molding block is connected；
The electric energy metrical value that first memory module is sent to the n ammeter is stored.
Further, the ammeter include sampling module, metering module, the second control module, the 3rd communication module and every
From module；First power port of the ammeter includes the first positive supply port and the first ground port, the second electricity of the ammeter
Source port includes the second positive supply port and the second ground port；
The first positive supply port and first ground port respectively with the second positive supply port and described second
Ground port is electrically connected, and the sampling module is connected between the live wire input of the ammeter and fire wire output end, the metering
The output end and the zero line port electricity of the ammeter of the first input end of module and the second input respectively with the sampling module
Connection, the input and communication terminal of second control module are communicated with the output end of the metering module and the described 3rd respectively
The first communication terminal connection of module, the positive output of the power end and ground terminal of second control module respectively with the isolation module
End and negative output terminal connection, the second communication terminal of the 3rd communication module is electrically connected with the PORT COM of the ammeter, described
The positive input terminal and negative input end of isolation module are electrically connected with the positive supply port and ground port of the ammeter respectively；
The sampling module is sampled to the electric current and voltage of corresponding user load, and exports sampling value to the meter
Measure module；The metering module is measured according to the sampling value to the power consumption of the user load, and exports electric energy meter
Value is to second control module；Second control module is defeated by the 3rd communication module by the electric energy metrical value
Go out to the control device；When the live wire input of the ammeter is with the live wire disconnecting, the isolation module is to the electricity
The power port of table is isolated.
Further, the ammeter also includes controlling switch；The controlling switch is connected to the sampling module and described
Between the fire wire output end of ammeter；
Second control module receives the folding control instruction that user is sent by the control device, and according to described
Folding control instruction carries out folding control to the controlling switch.
Further, the ammeter also includes display module, and the display module is connected with second control module；
The display module is shown to the power information of corresponding user load.
Further, the ammeter also includes the second memory module, second memory module and the described second control mould
Block is connected；
Second memory module is stored to the electric energy metrical value that the metering module is exported.
The electric energy metered system that the present invention is provided includes control device and n ammeter, the live wire of control device and civil power and
Zero line is connected, and for carrying out voltage conversion to civil power, and it is that n ammeter is powered to export direct current by its power port, each
Ammeter is measured to the power consumption of connected user load, and exports electric energy metrical value extremely by its first PORT COM
Control device.Power module need not be set because the electric energy of each ammeter is provided by control device, therefore inside ammeter, reduced
The volume of ammeter, is conducive to ammeter to install, and reduce cost；Simultaneously as the zero line port of n ammeter passes through electricity successively
The mode of connection is connected to the zero line port of control device altogether, therefore each ammeter connects the zero line of civil power without external circuit again,
Simplify the wiring of whole system.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of electric energy metered system provided in an embodiment of the present invention；
Fig. 2 is a kind of structured flowchart for electric energy metered system that another embodiment of the present invention is provided.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It is a kind of structured flowchart of electric energy metered system provided in an embodiment of the present invention referring to Fig. 1.For convenience of description,
The part related to the embodiment of the present invention is illustrate only, details are as follows：
As shown in figure 1, a kind of electric energy metered system, including control device 1 and n ammeter 21~2n, n are positive integer.Control
Zero line port a, power port b and PORT COM c are provided with device 1 processed.Each ammeter (21,22 ... or 2n etc.) on
It is provided with the first zero line port a1, the first power port b1, the first PORT COM c1, the second zero line port a2, second source end
Mouth b2 and the second PORT COM c2.
The zero line and zero line side of control device 1 are connected with the live wire L and zero line N of civil power respectively, n 21~2n of ammeter from
1st ammeter 21 starts to (n-1)th ammeter 2 (n-1), the second zero line port a2, the second source port b2 of each ammeter and
The first zero line port a1, the first power port b1 and the first PORT COM c1 of second PORT COM c2 respectively with latter ammeter
Electrical connection, and the 1st ammeter 21 the first zero line port a1, the first power port b1 and the first PORT COM c1 respectively with control
Zero line port a, power port b and PORT COM the c electrical connection of device 1, each ammeter (21,22 ... or 2n etc.) first
Zero line port a1, the first power port b1 and the first PORT COM c1 respectively with its second zero line port a2, second source port
B2 and the second PORT COM c2 electrical connections, n 21~2n of ammeter live wire input is connected with live wire L, n 21~2n of ammeter
Fire wire output end respectively with different user load zero line side be connected, the zero line of user load is connected with live wire L.
Control device 1 carries out voltage conversion to civil power, and by its power port b export direct current be n ammeter 21~
2n powers, each ammeter (21,22 ... or 2n etc.) power consumption of connected user load is measured, and pass through
Its first PORT COM c1 exports electric energy metrical value to control device 1.
In embodiments of the present invention, when n is that 1, i.e. electric energy metered system only include an ammeter, the 1st of the ammeter the
Line end mouthful a1, the first power port b1 and the first PORT COM c1 respectively with zero line port a, the power port b of control device 1 and
PORT COM c is electrically connected.
In embodiments of the present invention, 21~2n of ammeter the first zero line port a1, the first power port b1 and the first communication
Port c1 could be arranged to card aciculiform shape, 21~2n of ammeter the second zero line port a2, second source port b2 and the second communication
Zero line port a, power port b and the PORT COM c of port c2 or control device could be arranged to the first zero line port a1,
First power port b1 and the first PORT COM c1 distinguishes corresponding neck shape, and card pin is connected in neck, so as to realize the 1st
The first zero line port a1, the first power port b1 of individual ammeter 21 and the zero line port of the first PORT COM c1 and control device 1
A, power port b and PORT COM c electrical connection, and previous ammeter the second zero line port a2, second source port b2
And second PORT COM c2 and latter ammeter the first zero line port a1, the first power port b1 and the first PORT COM c1
Electrical connection.Certainly, 21~2n of ammeter the first zero line port a1, the first power port b1 and the first PORT COM c1 are set to
Neck shape, by 21~2n of ammeter the second zero line port a2, second source port b2 and the second PORT COM c2 or control
Zero line port a, power port b and the PORT COM c of device could be arranged to card aciculiform shape, can equally realize ammeter and ammeter
Or the electrical connection between ammeter and control device 1.The electrical connection between two devices is realized above by the mode of clamping, not only
The outside cabling of system is reduced, the wiring of system is simplified, and causes user can be according to actual need by way of clamping
Ask and flexible configuration is carried out to the quantity of ammeter.
In embodiments of the present invention, control device 1 by the zero line of civil power by leading to its zero line port a, the 1st inside it
First zero line port a1 of ammeter 21 is electrically connected with the zero line port a of control device 1, the first zero line port a1 of latter ammeter
Electrically connected with the second zero line port a2 of previous ammeter, and the first zero line port a1 and its second zero line port of each ammeter
A2 is electrically connected inside ammeter, i.e., the zero line port of n ammeter is connected to the zero of control device 1 altogether by way of being sequentially connected electrically
Line end mouthful a, so that zero line of each ammeter without connecting civil power by outside line again, simplifies the wiring of system.
In embodiments of the present invention, civil power is carried out voltage conversion by control device 1, and exports straight by its power port b
Stream electricity is powered for each ammeter, need not be set power module inside ammeter, so as to reduce the volume of ammeter, is conducive to ammeter
Install, and reduce cost.
It is a kind of structured flowchart of electric energy metered system of another offer of the embodiment of the present invention referring to Fig. 2.For the ease of saying
It is bright, the part related to the embodiment of the present invention is illustrate only, details are as follows：
As shown in Fig. 2 as one embodiment of the invention, control device 1 include power module 10, the first control module 11,
First communication module 12 and the second communication module 13；The power port b of control device 1 includes positive supply port b+ and ground port
bg。
The negative input end and positive input terminal of power module 11 are respectively the zero line and zero line side of control device 1, power supply mould
The positive input terminal of block 11 is also electrically connected with the zero line port a of control device 1, the negative output terminal and positive output end point of power module 11
Be not connected with the ground terminal and power end of the first control module 11, the negative output terminal and positive output end of power module 11 also respectively with control
Ground port bg and positive supply port the b+ electrical connection of device 1 processed, the first communication terminal and the second communication terminal of the first control module 11
It is connected respectively with the first communication terminal of the first communication module 12 and the first communication terminal of the second communication module 13, the first communication module
12 the second communication terminal is electrically connected with the PORT COM c of control device 1.
It is understood that in embodiments of the present invention, power module 10 is also communicated with the first communication module 12 and second
Module 13 connects (not shown).
Power module 10 carries out voltage conversion to civil power, and it is the first control module 11, first communication mould to export direct current
The communication module 13 of block 12 and second is powered, meanwhile, it is n that power module 11 exports direct current by the power port b of control device 1
Individual ammeter 21~22 is powered；First communication module 12 receives n ammeter 21~22 by the PORT COM c of control device 1 and exported
Electric energy metrical value, and electric energy metrical value is sent to the first control module 11, the first control module 11 leads to electric energy metrical value
The second communication module 13 is crossed to send to user terminal.
In actual applications, power module 10 can be turned using existing including transformer, rectification filtering unit and voltage
Unit etc. is changed, the power module for electric main to be converted to direct current.In embodiments of the present invention, power module 10 is exported
Direct current voltage can be 16V or 5V, be configured, be not limited herein with specific reference to actual demand.
In embodiments of the present invention, live wire be voltage, the public basic point of current sampling, i.e. live wire for " " point, that is,
Say that the live wire inside control device 1 or ammeter 21~22 in the embodiment of the present invention is connected to ground altogether, i.e., be connected to control device 1 altogether
Power port b ground port bg.
In embodiments of the present invention, the first control module 11 can using CPU (Central Processing Unit, in
Central processor), MCU (Microcontroller Unit, micro-control unit) or single-chip microcomputer etc., be not limited herein.
In embodiments of the present invention, the first communication module 12 can use RS485 communication interfaces, certainly, the first communication mould
Block 12 can also can realize the serial communication interface of similar functions using other, be configured with specific reference to actual demand, herein
It is not limited.
In embodiments of the present invention, the second communication module 13 can be wireless communication module, be specifically as follows Bluetooth communication
Module or wifi communication modules etc., are not limited herein.
In embodiments of the present invention, user terminal can be the intelligent terminals such as mobile phone, tablet personal computer, desktop computer, be used for
Realize the real-time monitoring to user power utilization amount.
In embodiments of the present invention, control device 1 is by the zero line N of civil power by leading to its zero line port a inside it
N ammeter 21~22 provides public zero curve contact so that the ammeter of ammeter 21~22 connects without the zero line N of external circuit and civil power again
Connect, so as to simplify system wiring.Meanwhile, the power module 10 in control device 1 can be ammeter 21~22 by power interface b
A power module can be saved by providing in electric energy, each ammeter 21~22, not only reduce the volume of ammeter, and reduce
Cost.
As one embodiment of the invention, control device 1 also includes the first memory module (not shown)；First storage mould
Block is connected with the first control module 11.
The electric energy metrical value that first memory module 11 is sent to n ammeter 21~22 is stored.
As one embodiment of the invention, each ammeter (21,22 ... or 2n etc.) include sampling module 201, metering
Module 202, the second control module 203, the 3rd communication module 204 and isolation module 205.Each ammeter (21,22 ... or 2n
Deng) the first power port b1 include the first positive supply port b1+ and the first ground port b1g, each ammeter (21,22 ...,
Or 2n etc.) second source port b2 include the second positive supply port b2+ and the second ground port b2g.
Wherein, each ammeter (21,22 ... or 2n etc.) the first positive supply port b1+ and the first ground port b1g points
Do not electrically connected with its second positive supply port b2+ and the second ground port b2g, sampling module 201 is connected to the live wire input of ammeter
Between end and fire wire output end, the output of the first input end of metering module 202 and the second input respectively with sampling module 201
End and the zero line port (a1 or a2) of ammeter are electrically connected, and the input and communication terminal of the second control module 203 are respectively with measuring mould
The first communication terminal connection of the output end of block 202 and the 3rd communication module 204, the power end and ground terminal of the second control module 203
It is connected respectively with the positive output end and negative output terminal of isolation module 205, the second communication terminal of the 3rd communication module 204 and ammeter
PORT COM (c1 or c2) is electrically connected, the positive supply port of the positive input terminal and negative input end of isolation module 205 respectively with ammeter
(b2+ after b1+) and ground port (b1g or b2g) electrical connection.
The electric current and voltage of the corresponding user load of 201 pairs of sampling module are sampled, and export sampling value to measuring mould
Block 202；Metering module 202 is measured according to sampling value to the power consumption of user load, and exports electric energy metrical value to second
Control module 203；Second control module 203 exports electric energy metrical value to control device 1 by the 3rd communication module 204；When
When the live wire input of ammeter is with live wire disconnecting, isolation module 205 is isolated to the power port (b1 or b2) of ammeter.
In embodiments of the present invention, sampling module 201 can be transformer or manganese copper diverter, i.e., by transformer or copper-manganese
Current divider is serially connected between the live wire input of ammeter and fire wire output end, and the inspection to the curtage of user load can be achieved
Survey.In actual applications, sampling module 201 can also can carry out the circuit or component of curtage sampling for other, this
Place is not limited.
In embodiments of the present invention, metering module 202 can use the existing electric energy using electric energy computation chip as core
Metering circuit, for example, the ic for energy metering using model RN8209G computation chip as core is used, with specific reference to reality
Demand is configured, and is not limited herein.
In embodiments of the present invention, the second control module 203 can using CPU (Central Processing Unit,
Central processing unit), MCU (Microcontroller Unit, micro-control unit) or single-chip microcomputer etc., be not limited herein.
In embodiments of the present invention, the 3rd communication module 204 can use RS485 communication interfaces, certainly, the 3rd communication mould
Block 204 can also can realize the serial communication interface of similar functions using other, be configured with specific reference to actual demand, herein
It is not limited.
In actual applications, when the live wire input of ammeter is disconnected with live wire, because the live wire inside ammeter is
Ground wire, therefore, the high current of user load can pour in down a chimney the ground port of telegram in reply table (b1g or b2g), so as to burn the power end of ammeter
Mouthful, or even burn ammeter.The embodiment of the present invention is set between the power port (b1 or b2) of ammeter and the second control module 203
Isolation module 205, so as to avoid the live wire input of ammeter and when live wire is disconnected, the high current of user load, which is poured in down a chimney, to be led
Send a telegraph the situation that table burns.
In embodiments of the present invention, isolation module 205 can use the isolation circuit using isolated from power chip as core, example
Such as, the power isolation circuit using isolated from power chip B_S-2WR2 as core can be used, is set with specific reference to actual demand
Put, be not limited herein.
As one embodiment of the invention, ammeter (21,22 ... or 2n etc.) also include controlling switch 206.Controlling switch
206 are connected between sampling module 201 and the fire wire output end of ammeter.
Second control module 203 receives the folding control instruction that user is sent by control device 1, and according to folding control
Instruction carries out folding control to controlling switch 206.
In actual applications, controlling switch 206 can be relay or the on-off circuit being made up of switching tube etc., specific root
It is configured, is not limited herein according to actual demand.
In embodiments of the present invention, when the non-electricity payment of a certain user, user can send folding by user terminal
Control instruction (such as cut-offing instruction) is to control device 1, and the second communication module 13 in control device 1 is by the folding control received
System instruction is sent to the first control module 11, and the first control module 11 sends folding control instruction by the first communication module 12
To corresponding ammeter, the second control module 203 in corresponding ammeter disconnects according to folding control instruction control controlling switch 206,
And then stop powering for corresponding user load, it is achieved thereby that to the remote control of user load power on/off.
As one embodiment of the invention, ammeter (21,22 ... or 2n etc.) also include display module (not shown),
Display module is connected with the second control module 203, and display module is shown to the power information of corresponding user load.
In actual applications, display module can be LCDs or LED display, be carried out with specific reference to actual demand
Set, be not limited herein.
As one embodiment of the invention, ammeter (21,22 ... or 2n etc.) (do not show in figure including the second memory module also
Go out), the second memory module is connected with the second control module 203.
The electric energy metrical value that second memory module is exported to metering module 202 is stored.
Electric energy metered system provided in an embodiment of the present invention includes control device and n ammeter, control device and civil power
Live wire and zero line connection, for carrying out voltage conversion to civil power, and it is that n ammeter is supplied to export direct current by its power port
Electricity, each ammeter is measured to the power consumption of connected user load, and exports electric energy by its first PORT COM
Variable is to control device.Because the electric energy of each ammeter is provided by control device, therefore inside ammeter, power supply need not be set
Module, reduces the volume of ammeter, is conducive to ammeter to install, and reduce cost；Simultaneously as the zero line port of n ammeter
It is connected to the zero line port of control device altogether by way of being sequentially connected electrically, therefore each ammeter is without the connection of external circuit again city
The zero line of electricity, simplifies the wiring of whole system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of electric energy metered system, including control device and n ammeter, n is positive integer；The zero line of the control device and
Zero line side is connected with the live wire and zero line of civil power respectively, it is characterised in that the n ammeter is since the 1st ammeter to (n-1)th
Individual ammeter, the second zero line port, second source port and the second PORT COM of each ammeter respectively with latter ammeter
One zero line port, the first power port and the electrical connection of the first PORT COM, and the first zero line port of the 1st ammeter, the
One power port and the first PORT COM are electrically connected with zero line port, power port and the PORT COM of the control device respectively
Connect, the first zero line port, the first power port and the first PORT COM of each ammeter respectively with its second zero line port, second
Power port and the electrical connection of the second PORT COM, the live wire input of the n ammeter are connected with the live wire, the n
The zero line side that the fire wire output end of ammeter is loaded with different user respectively is connected, the zero line of the user load and the live wire
Connection；
The control device carries out voltage conversion to the civil power, and it is described n electricity to export direct current by its power port
Table is powered, and each ammeter is measured to the power consumption of connected user load, and is exported by its first PORT COM
Electric energy metrical value is to the control device.
2. electric energy metered system as claimed in claim 1, it is characterised in that the control device includes power module, first
Control module, the first communication module and the second communication module；The power port of the control device includes positive supply port and ground
Port；
The negative input end and positive input terminal of the power module are respectively the zero line and zero line side of the control device, the electricity
The positive input terminal of source module is also electrically connected with the zero line port of the control device, the negative output terminal of the power module and just defeated
Go out end to be connected with the ground terminal and power end of first control module respectively, the negative output terminal and positive output end of the power module
Also electrically connected respectively with the ground port and positive supply port of the control device, the first communication terminal of first control module and
Second communication terminal connects with the first communication terminal of first communication module and the first communication terminal of second communication module respectively
Connect, the second communication terminal of first communication module is electrically connected with the PORT COM of the control device；
Civil power described in the electric power source pair of module carries out voltage conversion, and it is first control module, described the to export direct current
One communication module and second communication module are powered, meanwhile, the power port that the power module passes through the control device
Output direct current is that the n ammeter is powered；First communication module receives institute by the PORT COM of the control device
The electric energy metrical value of n ammeter output is stated, and the electric energy metrical value is sent to first control module, first control
Molding block sends the electric energy metrical value to user terminal by second communication module.
3. electric energy metered system as claimed in claim 2, it is characterised in that the control device also includes the first storage mould
Block；First memory module is connected with first control module；
The electric energy metrical value that first memory module is sent to the n ammeter is stored.
4. electric energy metered system as claimed in claim 1, it is characterised in that the ammeter include sampling module, metering module,
Second control module, the 3rd communication module and isolation module；First power port of the ammeter includes the first positive supply port
With the first ground port, the second source port of the ammeter includes the second positive supply port and the second ground port；
The first positive supply port and first ground port respectively with the second positive supply port and second ground terminal
Mouth electrical connection, the sampling module is connected between the live wire input of the ammeter and fire wire output end, the metering module
First input end and the second input electrically connected respectively with the output end of the sampling module and the zero line port of the ammeter,
The output end and the 3rd communication module of the input and communication terminal of second control module respectively with the metering module
The connection of the first communication terminal, the power end and ground terminal of second control module respectively with the positive output end of the isolation module and
Negative output terminal is connected, and the second communication terminal of the 3rd communication module is electrically connected with the PORT COM of the ammeter, the isolation
The positive input terminal and negative input end of module are electrically connected with the positive supply port and ground port of the ammeter respectively；
The sampling module is sampled to the electric current and voltage of corresponding user load, and exports sampling value to the metering mould
Block；The metering module is measured according to the sampling value to the power consumption of the user load, and exports electric energy metrical value
To second control module；Second control module by the electric energy metrical value by the 3rd communication module export to
The control device；When the live wire input of the ammeter is with the live wire disconnecting, the isolation module is to the ammeter
Power port is isolated.
5. electric energy metered system as claimed in claim 4, it is characterised in that the ammeter also includes controlling switch；The control
System switch is connected between the fire wire output end of the sampling module and the ammeter；
Second control module receives the folding control instruction that user is sent by the control device, and according to the folding
Control instruction carries out folding control to the controlling switch.
6. electric energy metered system as claimed in claim 4, it is characterised in that the ammeter also includes display module, described aobvious
Show that module is connected with second control module；
The display module is shown to the power information of corresponding user load.
7. electric energy metered system as claimed in claim 4, it is characterised in that the ammeter also includes the second memory module, institute
The second memory module is stated to be connected with second control module；
Second memory module is stored to the electric energy metrical value that the metering module is exported.
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| CN201710417425.6A CN107219394B (en) | 2017-06-06 | 2017-06-06 | Electric energy metering system |
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| CN201710417425.6A CN107219394B (en) | 2017-06-06 | 2017-06-06 | Electric energy metering system |
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| CN107219394B CN107219394B (en) | 2023-09-05 |
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Cited By (1)
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| CN113115280A (en) * | 2020-01-10 | 2021-07-13 | 奉加微电子（上海）有限公司 | Automatic association pairing system and method for ammeter and circuit breaker |
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| CN107219394B (en) | 2023-09-05 |
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