CN106597088B - A kind of power distribution system of twin-core electric energy meter - Google Patents
A kind of power distribution system of twin-core electric energy meter Download PDFInfo
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- CN106597088B CN106597088B CN201610930034.XA CN201610930034A CN106597088B CN 106597088 B CN106597088 B CN 106597088B CN 201610930034 A CN201610930034 A CN 201610930034A CN 106597088 B CN106597088 B CN 106597088B
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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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Abstract
The invention discloses a kind of power distribution systems for twin-core electric energy meter, it includes power module (1)；The power module (1) includes the main power source (101) with N number of output end, the power distribution system further includes the M power distribution circuit that input terminal is accordingly connected with N number of output end of main power source (101), it include the P diode and Q lowering and stabilizing blood pressure unit forward connected per power distribution circuit all the way, wherein, the output end of power distribution circuit accordingly with twin-core electric energy meter management core management module (401), the processing module (302) of the metering core of twin-core electric energy meter, the clock module (303) of the processing module (302) of the metering core of the metering chip (301) and twin-core electric energy meter of the metering core of twin-core electric energy meter is connected.It is an advantage of the invention that by the route of independent separation, reasonable distribution power supply is realized that the metering core and management core of twin-core electric energy meter are reliable, is steadily run.
Description
Technical field
The present invention relates to a kind of power distribution systems of twin-core electric energy meter.
Background technique
The legality measurement part of country's electric energy meter and administrative section unitary design (i.e. metering core module and non-metering at present
Core module is monolithic construction), it is not carried out the independent operating of the two, the popularization of the national standard based on IR46, electric energy meter
Towards twin-core electric energy meter transition, wherein legality measurement part and administrative section independent operating in twin-core electric energy meter, existing electricity
The power-supply management system of energy table is suitable only for the electric energy meter of legality measurement part and administrative section unitary design, is not particularly suited for
Twin-core electric energy meter can not provide stable electricity for the independent operating of legality measurement part and administrative section in twin-core electric energy meter
Pressure, not can guarantee the normal operation of twin-core electric energy meter.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of power distribution system of twin-core electric energy meter, by independence, divide
From route, reasonable distribution power supply realizes that the metering core module of twin-core electric energy meter and non-metering core module are reliable, steadily transports
Row.
In order to solve the above technical problems, the technical solution of this offer are as follows: a kind of power distribution system of twin-core electric energy meter, it
Including power module and power distribution module；The power module includes the main power source at least three output ends；The electricity
Source distribution module includes several lowering and stabilizing blood pressure units and several diodes；First output end of the main power source and the first drop
One end of voltage regulation unit is pressed to be connected, the metering of the metering core module of the other end and twin-core electric energy meter of the first lowering and stabilizing blood pressure unit
Chip is connected；The second output terminal of the main power source is connected with one end of the second lowering and stabilizing blood pressure unit, the second lowering and stabilizing blood pressure list
The other end of member is connected with the anode of first diode, one end of the cathode of the first diode and a third lowering and stabilizing blood pressure unit
It is connected, the management module of the non-metering core module of the other end and twin-core electric energy meter of the third lowering and stabilizing blood pressure unit is connect, and second
Lowering and stabilizing blood pressure unit is connected with the connecting node A of the anode of first diode with one the 4th lowering and stabilizing blood pressure unit, the 4th decompression
The other end of voltage regulation unit is connected with the RTC of the MCU in the processing module of the metering core module of twin-core electric energy meter；Connecting node A
Also it is connected with another 5th lowering and stabilizing blood pressure unit, the other end of the 5th lowering and stabilizing blood pressure unit and the metering core model of twin-core electric energy meter
The processing module of block is connected.
As a preference, being concatenated in the first output end of the main power source and the connection line of the first lowering and stabilizing blood pressure unit
One the 6th lowering and stabilizing blood pressure unit.
As a preference, connecting node A is connected with the alarm module of the non-metering core module of twin-core electric energy meter again.
As a preference, first diode and third lowering and stabilizing blood pressure in the connection line of the second output terminal of main power source
The infrared communication module of the non-metering core module of the connecting node B and twin-core electric energy meter of unit is connected.
As a preference, the power module further includes stopping copying battery, it is described to stop copying battery and one the 7th decompression
One end of voltage regulation unit is connected, and the other end of the 7th lowering and stabilizing blood pressure unit is connected with the anode of one second diode, this second
The cathode of diode is connected with connecting node B.
As a preference, the power distribution module further includes switch unit；Wherein, the switch unit has input
End, output end and signal control terminal, wherein the management of the non-metering core module of third lowering and stabilizing blood pressure unit and twin-core electric energy meter
The connecting node of module is connected with the input terminal of switch unit, the output end of switch unit and the metering core module of twin-core electric energy meter
Processing module be connected；The CPU of the management module of the non-metering core module of twin-core electric energy meter and the signal control terminal of switch unit
It is connected.
As a preference, the power distribution module further includes several charging and discharging modules；Wherein, the of main power source
The connecting node of the first lowering and stabilizing blood pressure unit and the 6th lowering and stabilizing blood pressure unit in the connection line of one output end is filled with one first
Discharge of electricity module is connected.
As a preference, the second lowering and stabilizing blood pressure unit and the 5th drop in the connection line of the second output terminal of main power source
A third diode, the connecting node of the 5th lowering and stabilizing blood pressure unit and the cathode of third diode are concatenated between pressure voltage regulation unit
C is connected with one second charging and discharging module.
As a preference, the power module further includes Clock battery, the Clock battery and one the 4th diode
Anode is connected, and the cathode of the 4th diode is connected with connecting node C again.
As a preference, the third output end of the main power source card mold with the communication module of twin-core electric energy meter respectively
Block, RS module, uplink module and downstream module.
After using the above structure, compared with prior art, the present invention having the advantage that
One, by building reasonable, independent route, cause main power source respectively with the metering core module of twin-core electric energy meter and double
The non-metering core module of core electric energy meter establishes connection, reasonably distributes power supply, is the metering core module and non-meter of twin-core electric energy meter
It measures core module and suitable operating voltage is provided, realize that the metering core module of twin-core electric energy meter and non-metering core module are reliable, stablize
Ground operation.
Two, Clock battery and stop copying battery by setting, at the same also overlapped setting Clock battery and stopping copy battery with pair
The connection line of the metering core module and non-metering core module of core electric energy meter, ensure that after main power source is interfered power-off, leads to
Oversampling clock battery and stopping copies that battery continues as the metering core module of twin-core electric energy meter and non-metering core module provides suitable work
Voltage.
Three, by setting charging and discharging module, guarantee twin-core electric energy meter metering core module RTC, Clock battery without
After effect, effective work a period of time；The metering chip for guaranteeing the metering core module of twin-core electric energy meter, after main power source is invalid,
Effective work a period of time.
Detailed description of the invention
Fig. 1 is the present invention only circuit diagram under main power source working condition.
Fig. 2 is integrally-built circuit diagram of the invention.
Fig. 3 is working principle circuit diagram of the present invention in primary source failure.
Described in figure: 1, power module；101, main power source；102, Clock battery；103, stop to copy battery；2, power distribution mould
Block；201, lowering and stabilizing blood pressure unit；202, diode；203, switch unit；204, charging and discharging module；301, metering chip；
401, management module；501, card module；502, RS485 module；503, uplink module；504, downstream module；6, short-circuit protection mould
Block.
Specific embodiment
With reference to the accompanying drawing to being originally described in further detail.
As shown in Figure 1, Figure 2 and Figure 3, a kind of power distribution system of twin-core electric energy meter of the present invention, it includes power module 1
With power distribution module 2；Power module 1 includes the main power source 101 at least three output ends；Power distribution module 2 includes
Several lowering and stabilizing blood pressure units 201, several diodes 202 and short circuit protection module 6；First output end of main power source 101 with
One end of first lowering and stabilizing blood pressure unit 201 is connected, the metering of the other end and twin-core electric energy meter of the first lowering and stabilizing blood pressure unit 201
The metering chip 301 of core module is connected；The second output terminal of main power source 101 is connected with one end of the second lowering and stabilizing blood pressure unit 201,
The other end of the second lowering and stabilizing blood pressure unit 201 is connected with the anode of first diode 202, the cathode of the first diode 202
It is connected with one end of a third lowering and stabilizing blood pressure unit 201, the other end and the twin-core electric energy meter of the third lowering and stabilizing blood pressure unit 201
The management module 401 of non-metering core module connects；The connection of second lowering and stabilizing blood pressure unit 201 and the anode of first diode 202
Node A is connected with one the 4th lowering and stabilizing blood pressure unit 201, the other end and the twin-core electric energy meter of the 4th lowering and stabilizing blood pressure unit 201
The RTC for measuring the MCU in the processing module 302 of core module is connected；Connecting node A also with another 5th lowering and stabilizing blood pressure unit 201
It is connected, the processing module 302 of the metering core module of the other end and twin-core electric energy meter of the 5th lowering and stabilizing blood pressure unit 201 is connected.
One the 6th decompression is concatenated on first output end of main power source 101 and the connection line of the first lowering and stabilizing blood pressure unit 201
Voltage regulation unit 201.
Connecting node A is connected with the alarm module 403 of the non-metering core module of twin-core electric energy meter again.
First diode 202 and third lowering and stabilizing blood pressure unit 201 in the connection line of the second output terminal of main power source 101
Connecting node B be connected with the infrared communication module 402 of the non-metering core module of twin-core electric energy meter.
Power module 1 further includes stopping copying battery 103, stops one end phase for copying battery 103 with one the 7th lowering and stabilizing blood pressure unit 201
Even, the other end of the 7th lowering and stabilizing blood pressure unit 201 is connected with the anode of one second diode 202, second diode 202
Cathode is connected with connecting node B.
Power distribution module 2 further includes switch unit 203；Wherein, switch unit 203 have input, output end and
Signal control terminal, wherein the management module 401 of the non-metering core module of third lowering and stabilizing blood pressure unit 201 and twin-core electric energy meter
Connecting node is connected with the input terminal of switch unit 203, the output end of switch unit 203 and the metering core module of twin-core electric energy meter
Processing module be connected；The CPU of the management module 401 of the non-metering core module of twin-core electric energy meter and the signal of switch unit 203
Control terminal is connected.
Power distribution module 2 further includes several charging and discharging modules 204；Wherein, the first output end of main power source 101
The connecting node of the first lowering and stabilizing blood pressure unit 201 and the 6th lowering and stabilizing blood pressure unit 201 in connection line is put with one first charging
Electric module 204 is connected.
The second lowering and stabilizing blood pressure unit 201 and the 5th lowering and stabilizing blood pressure in the connection line of the second output terminal of main power source 101
A third diode 202, the company of the 5th lowering and stabilizing blood pressure unit 201 and the cathode of third diode 202 are concatenated between unit 201
Node C is met to be connected with one second charging and discharging module 204.
Power module 1 further includes Clock battery 102, and Clock battery 102 is connected with the anode of one the 4th diode 202, should
The cathode of 4th diode 202 is connected with connecting node C again.
The third output end of main power source 101 respectively with the card module 501 of the communication module of twin-core electric energy meter, RS485 module
502, uplink module 503 and downstream module 504.Wherein, uplink module 503 includes carrier module, GPRS module etc.；Downlink mould
Block 504 includes GPS module, mbus module etc.；The third output end of main power source 101 draws three Lu Zhilu, and first via branch road is gone here and there
Short circuit protection module 6 and 78L05 chip have been connect, has caused voltage decline to maintain 5V, current control is in 60mA and then is divided into
Two branches provide stable voltage to the card module 501 and RS485 module 502 of the communication module of twin-core electric energy meter respectively.
Wherein, main power source 101 respectively with twin-core electric energy meter metering core module and twin-core electric energy meter non-metering core module
Connection is established, power supply is reasonably distributed, provides suitable work for the metering core module and non-metering core module of twin-core electric energy meter
The job analysis of voltage is as follows: as shown in Figure 1, the first output end of main power source 101, the voltage swing of output is 8V, electricity
Stream size causes voltage to drop to 5V, size of current remains as 15mA, then leads to for 15mA by the first lowering and stabilizing blood pressure unit 201
One the 6th lowering and stabilizing blood pressure unit 201 is crossed, voltage is caused to decline again, drops to 3.3V, size of current remains as 15mA, is double
The metering chip 301 of the metering core module of core electric energy meter provides the burning voltage of 3.3V；The second output terminal of main power source 101, it is defeated
Voltage swing out causes voltage to drop to for 8V, size of current 210mA by one second lowering and stabilizing blood pressure unit 201
5.6V, size of current remain as 210mA, are divided into four branched lines later, wherein in first branched line, pass through concatenation
Third diode 202 and the 5th lowering and stabilizing blood pressure unit 201, cause to drop to 3.3V, electric current in the voltage of this branched line
Size control is 2 μ A, and the RTC for the MCU in the processing module 302 of the metering core module of twin-core electric energy meter provides the stabilization of 3.3V
Voltage, wherein the voltage in this branched line is caused by one the 4th lowering and stabilizing blood pressure unit 201 in Article 2 branched line
Drop to 3.3V, size of current control is 50mA, and the processing module 302 for the metering core module of twin-core electric energy meter provides 3.3V's
Burning voltage, wherein in Article 3 branched line, by the first diode 202 and third lowering and stabilizing blood pressure unit 201 of concatenation,
First by the pressure drop of first diode 202 in branched line, the voltage of this branched line is first dropped into 5V or so, electric current
Size control is 160mA, and when the voltage of this branched line drops to 5V or so, size of current control is that 160mA also draws one
Road branched line w passes through the infrared communication module of one short circuit protection module 6 and the non-metering core module of twin-core electric energy meter of concatenation
402 are connected, and the infrared communication module 402 for the non-metering core module of twin-core electric energy meter provides stable voltage, then passes through third
Lowering and stabilizing blood pressure unit 201, then the voltage of this branched line is dropped into 3.3V, size of current control is 130mA, is embodied as double
The management module 401 of the non-metering core module of core electric energy meter provides the burning voltage of 3.3V, wherein in Article 4 branched line,
It is twin-core electricity by being connected after one short circuit protection module 6 of concatenation with the alarm module 403 of the non-metering core module of twin-core electric energy meter
The alarm module 403 of the non-metering core module of energy table provides stable voltage.
Wherein, Clock battery 102 and stop copying battery 103 by setting, by Clock battery 102 and stopping copy battery 103 after
Continue the detailed process for providing suitable operating voltage for the metering core module of twin-core electric energy meter and non-metering core module to be analyzed as follows,
It is sequentially connected one the 7th lowering and stabilizing blood pressure unit 201 and the second diode 202 as shown in figure 3, stopping copying battery 103, is divided into two later
Branched line, wherein in the first branched line, it is connected with the management module 401 of the non-metering core module of twin-core electric energy meter,
Management module 401 for the non-metering core module of twin-core electric energy meter provides the burning voltage of 3.3V, wherein the second branched line is total
With branched line w, the infrared communication module 402 for the non-metering core module of twin-core electric energy meter provides stable voltage；Clock electricity
Pond 102 concatenates the 4th diode 202, is the RTC of the MCU in the processing module 302 of the metering core module of twin-core electric energy meter
The burning voltage of 3.3V is provided.
Wherein, by the way that charging and discharging module 204 is arranged, wherein a charging and discharging module 204 is the second of main power source 101
Charge and discharge are realized on the branched line of the RTC of the metering core module of output end and twin-core electric energy meter, guarantee the meter of twin-core electric energy meter
The RTC for measuring core module, after Clock battery is invalid, effective work a period of time；Wherein, a charging and discharging module 204 is in master
Charge and discharge is realized on the branched line of the metering chip 301 of the metering core module of the first output end and twin-core electric energy meter of power supply 101
Electricity guarantees the metering chip 301 of the metering core module of twin-core electric energy meter, after main power source is invalid, effective work a period of time；
Simultaneously, additionally it is possible to by the CPU deactivation switches unit 203 of the management module 401 of non-metering core module, be embodied as twin-core
The processing module 302 of the metering core module of electric energy meter provides stable voltage.
Wherein, above-mentioned involved lowering and stabilizing blood pressure unit 201, refers to LDO module in this application, is also possible to other
Play the role of the component or module of lowering and stabilizing blood pressure.
Only highly preferred embodiment of the present invention is described above, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above embodiments, and all various changes made in the protection scope of independent claims of the invention exist
In this protection scope.
Claims (10)
1. a kind of power distribution system of twin-core electric energy meter, it includes power module (1) and power distribution module (2)；Its feature
Be: the power module (1) includes the main power source (101) at least three output ends；Power distribution module (2) packet
Include several lowering and stabilizing blood pressure units and several diodes；The first output end and the first lowering and stabilizing blood pressure of the main power source (101)
One end of unit is connected, the metering chip of the metering core module of the other end and twin-core electric energy meter of the first lowering and stabilizing blood pressure unit
(301) it is connected；The second output terminal of the main power source (101) is connected with one end of the second lowering and stabilizing blood pressure unit, second decompression
The other end of voltage regulation unit is connected with the anode of first diode, the cathode of the first diode and a third lowering and stabilizing blood pressure unit
One end be connected, the management module of the non-metering core module of the other end and twin-core electric energy meter of the third lowering and stabilizing blood pressure unit
(401) it connects, the connecting node A and one the 4th lowering and stabilizing blood pressure unit phase of the second lowering and stabilizing blood pressure unit and the anode of first diode
Even, the other end of the 4th lowering and stabilizing blood pressure unit is with the MCU's in the processing module (302) of the metering core module of twin-core electric energy meter
RTC is connected；Connecting node A is also connected with another 5th lowering and stabilizing blood pressure unit, the other end of the 5th lowering and stabilizing blood pressure unit and double
The processing module (302) of the metering core module of core electric energy meter is connected.
2. a kind of power distribution system of twin-core electric energy meter according to claim 1, it is characterised in that: the main power source
(101) one the 6th lowering and stabilizing blood pressure unit is concatenated in the first output end and the connection line of the first lowering and stabilizing blood pressure unit.
3. a kind of power distribution system of twin-core electric energy meter according to claim 1, it is characterised in that: connecting node A is again
It is connected with the alarm module (403) of the non-metering core module of twin-core electric energy meter.
4. a kind of power distribution system of twin-core electric energy meter according to claim 1, it is characterised in that: main power source (101)
Second output terminal connection line on first diode cathode and third lowering and stabilizing blood pressure unit connecting node B and twin-core
The infrared communication module (402) of the non-metering core module of electric energy meter is connected.
5. a kind of power distribution system of twin-core electric energy meter according to claim 4, it is characterised in that: the power module
(1) further include stopping copying battery (103), it is described stop copying battery (103) be connected with one end of one the 7th lowering and stabilizing blood pressure unit, the 7th
The other end of lowering and stabilizing blood pressure unit is connected with the anode of one second diode, cathode and the connecting node B phase of second diode
Even.
6. a kind of power distribution system of twin-core electric energy meter according to claim 1, it is characterised in that: the power distribution
Module (2) further includes switch unit (203)；Wherein, the switch unit (203) has input, output end and signal control
End processed, wherein the connecting node of the management module (401) of the non-metering core module of third lowering and stabilizing blood pressure unit and twin-core electric energy meter
It is connected with the input terminal of switch unit (203), the place of the metering core module of the output end and twin-core electric energy meter of switch unit (203)
Module is managed to be connected；The CPU of the management module (401) of the non-metering core module of twin-core electric energy meter and the signal of switch unit (203)
Control terminal is connected.
7. a kind of power distribution system of twin-core electric energy meter according to claim 2, it is characterised in that: the power distribution
Module (2) further includes several charging and discharging modules；Wherein, in the connection line of the first output end of main power source (101)
One lowering and stabilizing blood pressure unit is connected with the connecting node of the 6th lowering and stabilizing blood pressure unit with one first charging and discharging module.
8. a kind of power distribution system of twin-core electric energy meter according to claim 7, it is characterised in that: main power source (101)
Second output terminal connection line on the second lowering and stabilizing blood pressure unit and the 5th lowering and stabilizing blood pressure unit between concatenate one the 3rd 2
Pole pipe, the 5th lowering and stabilizing blood pressure unit are connected with the connecting node C of the cathode of third diode with one second charging and discharging module.
9. a kind of power distribution system of twin-core electric energy meter according to claim 8, it is characterised in that: the power module
It (1) further include Clock battery (102), the Clock battery (102) is connected with the anode of one the 4th diode, the 4th diode
Cathode again be connected with connecting node C.
10. a kind of power distribution system of twin-core electric energy meter according to claim 1, it is characterised in that: the main power source
(101) third output end respectively with the card module of the communication module of twin-core electric energy meter (501), RS485 module (502), uplink
Module (503) and downstream module (504).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610930034.XA CN106597088B (en) | 2016-10-31 | 2016-10-31 | A kind of power distribution system of twin-core electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930034.XA CN106597088B (en) | 2016-10-31 | 2016-10-31 | A kind of power distribution system of twin-core electric energy meter |
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| Publication Number | Publication Date |
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| CN106597088A CN106597088A (en) | 2017-04-26 |
| CN106597088B true CN106597088B (en) | 2019-05-17 |
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| CN109142860A (en) * | 2018-08-22 | 2019-01-04 | 华立科技股份有限公司 | Wireless power electric energy meter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841187A (en) * | 2010-05-28 | 2010-09-22 | 威胜集团有限公司 | Power management power supply system for electronic electric energy meter |
| CN202196118U (en) * | 2011-03-21 | 2012-04-18 | 北京华煜宏博科技有限公司 | Stepped billing electric energy meter |
| CN102798756A (en) * | 2012-06-27 | 2012-11-28 | 华立仪表集团股份有限公司 | Power supply circuit for intelligent electricity meter and three-phase intelligent electricity meter |
| CN203339787U (en) * | 2013-07-29 | 2013-12-11 | 威胜集团有限公司 | Electric energy meter power supply system |
| JP2015023456A (en) * | 2013-07-19 | 2015-02-02 | ローム株式会社 | Controllable outlet and power consumption management system |
| CN104821653A (en) * | 2015-03-27 | 2015-08-05 | 国家电网公司 | Ammeter and power supply circuit therein, and power supply control method inside the ammeter |
-
2016
- 2016-10-31 CN CN201610930034.XA patent/CN106597088B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841187A (en) * | 2010-05-28 | 2010-09-22 | 威胜集团有限公司 | Power management power supply system for electronic electric energy meter |
| CN202196118U (en) * | 2011-03-21 | 2012-04-18 | 北京华煜宏博科技有限公司 | Stepped billing electric energy meter |
| CN102798756A (en) * | 2012-06-27 | 2012-11-28 | 华立仪表集团股份有限公司 | Power supply circuit for intelligent electricity meter and three-phase intelligent electricity meter |
| JP2015023456A (en) * | 2013-07-19 | 2015-02-02 | ローム株式会社 | Controllable outlet and power consumption management system |
| CN203339787U (en) * | 2013-07-29 | 2013-12-11 | 威胜集团有限公司 | Electric energy meter power supply system |
| CN104821653A (en) * | 2015-03-27 | 2015-08-05 | 国家电网公司 | Ammeter and power supply circuit therein, and power supply control method inside the ammeter |
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| CN106597088A (en) | 2017-04-26 |
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