CN106532908A - Dual-core electric energy meter and power supply control method therefor - Google Patents
Dual-core electric energy meter and power supply control method therefor Download PDFInfo
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- CN106532908A CN106532908A CN201610903410.6A CN201610903410A CN106532908A CN 106532908 A CN106532908 A CN 106532908A CN 201610903410 A CN201610903410 A CN 201610903410A CN 106532908 A CN106532908 A CN 106532908A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a dual-core electric energy meter and a power supply control method therefor. The dual-core electric energy meter comprises a metering core, a management core and a power supply management control module, wherein the metering core is used for realizing an electric energy metering function; the management core is used for realizing a non-electric-energy metering management function; the power supply management control module is used for realizing independent power supply for the metering core and the management core, wherein the power supply management control module consists of a main power supply, a clock battery and a power-off meter-reading battery; according to the control method, when the main power supply is powered on, all power supplies are supplied by the main power supply, and the metering core is powered by an independent power supply branch; when the main power supply is in power outage, a real-time clock RTC of the metering core is powered by the clock battery, and the management core is powered by the power-off meter-reading battery; and when the clock battery is replaced, the real-time clock RTC in the metering core is temporarily powered by a supercapacitor.
Description
Technical field
The present invention relates to electric energy meter field, more particularly to a kind of twin-core electric energy meter and its power control method.
Background technology
With the diversification of customer demand, Science in Future in China electric energy meter will be become based on the twin-core electric energy meter of IR46 standards
Developing direction.Twin-core electric energy meter requires metering core (realizing the functional module to electric energy metrical statistics in electric energy meter) and management core
(realizing the functional module of data transfer, storage etc. in electric energy meter) separates, i.e., metering core and management core separate, and metering section
Can work independently.But, current China's electric energy meter is designed for integral type, i.e., independent work is not done in metering section and non-metering part
It is required.The power unit of electric energy meter, mainly by main power source, stop copying battery, three tunnel of Clock battery and constitute, wherein stopping to copy battery can
Change, Clock battery is non-exchange.When main power source has electricity, electric energy meter provides all consumption by main power source；During main power source power-off,
Stop copying battery and preferentially power；When stopping copying battery undervoltage, powered by Clock battery.Therefore, existing power control circuit can not
Meet the independently-powered requirement of twin-core electric energy meter.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of twin-core electric energy meter with novel power supply management control module.
By the novel power supply management control module, can be that the metering core of twin-core electric energy meter and management core provide standby electricity respectively
Source, the requirement individually powered for modules so as to meet twin-core electric energy meter.Twin-core electric energy meter in the present invention includes:
Metering core, is made up of clock circuit RTC and metering units, for realizing electric energy metrical function；
Management core, for realizing nonelectrical energy management through quantification function, such as data storage, data-transformation facility etc.；And
Power management control module, for realizing carrying out independent current source supply to metering core and management core, so that succeed in one's scheme
Amount core and management core can work independently.
Preferably, the power management control module includes：
Main power source, which is electrically connected with the metering units and RTC in metering core and with management core respectively, by respectively to based on
Measure metering units and RTC in core and power supply is provided to management core；
Clock battery, which is electrically connected with the RTC in metering core, for providing power supply to metering core after main power source power-off；
And
Stop copying battery, which is electrically connected with management core, for providing power supply to management core after main power source power-off.
Preferably, the power management control module also includes first diode, and first Diode series exist
Between Clock battery and RTC, anode and Clock battery are electrically connected, and negative electrode is electrically connected with RTC, and first diode is used for working as
On main power source during electricity, Clock battery is prevented to provide power supply to RTC.
Preferably, the power management control module also includes second diode, and second Diode series exist
Between main power source and the first diode, anode is electrically connected with main power source, and negative electrode is electrically connected with the negative electrode and RTC of the first diode
Connect, second diode charges to main power source for when clock is battery operated, preventing Clock battery.
Preferably, the power management control module also includes a super capacitor, its be located at the second diode and RTC it
Between, its role is to, when main power source or Clock battery are powered, charge the super capacitor, when main power source power-off and clock electricity
When pond is under-voltage or Clock battery is changed, the super capacitor provides power supply to RTC.
Preferably, the power management control module also includes the 3rd diode, and which is connected on and stops copying battery and pipe
Between reason core, anode electrically connect with stopping copying battery, and negative electrode and management core electrical connection, and the 3rd diode is for working as main power source
When upper electric, prevention stops copying battery to management core offer power supply.
Preferably, the power management control module also includes the 4th diode, and which is located at main power source with management core
Between, anode is electrically connected with main power source, and negative electrode is electrically connected with the negative electrode and management core of the 3rd diode, the 4th diode
For when stopping copying battery operated, prevention stops copying battery to main power source charging.
Preferably, carry out during electric energy meter power-off the event detection such as abnormity of power supply and full decompression to meet, the power supply pipe
Reason control module also includes a controlled switch, and the controlled switch is arranged on the metering units in metering core and the 3rd diode
Negative electrode between, and with control its folding management core in managing chip electrically connect.When main power source power-off, metering units energy
One-time detection is carried out enough by the folding of management core control controlled switch, was detected so as to ensure that metering core is effectively completed
Journey.
Preferably, the management core of the twin-core electric energy meter also includes back light unit, and the back light unit is electrically connected with main power source
Connect.
Preferably, the management core of the twin-core electric energy meter also includes buzzer, and the buzzer is electrically connected with main power source.
Preferably, the management core of the twin-core electric energy meter also includes infrared facility, the infrared facility and the 4th diode
Negative electrode electrical connection.
Preferably, the power management control module also includes five voltage transformation modules, for carrying out the voltage of circuit
Conversion, first voltage converter unit are located between the first diode and super capacitor, and second voltage converter unit is located at the four or two
Between pole pipe and management core, tertiary voltage converter unit is located between the second diode and metering units, the 4th voltage transformation list
Unit is located between main power source and the 4th diode, and the 5th voltage transformation module is located at and stops copying between battery and the 3rd diode.
Preferably, the power control method of the power management control module includes：
When electricity on main power source：
One article of separate branches sequentially passes through the 4th voltage transformation module, the second diode and first voltage converter unit to be reduced
Power to the clock circuit RTC and super capacitor in metering core after voltage；
One article of separate branches sequentially pass through the 4th voltage transformation module and tertiary voltage converter unit is reduced after voltage to meter
Metering units in amount core are powered；
One article of separate branches sequentially passes through the 4th voltage transformation module, the 4th diode and second voltage converter unit to be reduced
Power to the administrative unit in management core after voltage；
One article of separate branches sequentially pass through the 4th voltage transformation module and the 4th diode is reduced after voltage in management core
Infrared facility power；
One article of separate branches is powered to the back light unit in management core after the 4th voltage transformation module reduces voltage；
One article of separate branches is powered to the buzzer in management core after the 4th voltage transformation module reduces voltage；And
Main power source is prevented to Clock battery by the cut-off of the first diode and the 3rd diode and stops copying battery charging；
When main power source power-off：
One separate branches sequentially passes through the first diode and first voltage converter unit by Clock battery and reduces after voltage
Power for the clock circuit RTC and super capacitor in metering core；
One article of separate branches is become by stopping copying battery and sequentially pass through the 5th voltage transformation module, the 3rd diode and second voltage
Change, and the managing chip control controlled switch in administrative unit
Closure, is that the metering units in metering core are powered, to ensure that computation chip completes event detection procedure, such as abnormity of power supply and complete
The event detections such as decompression；
One article of separate branches is reduced after voltage by stopping copying battery and sequentially pass through the 5th voltage transformation module and the 3rd diode
Power for managing the infrared facility in core；
When changing Clock battery, power supply is provided for the clock circuit RTC in metering core temporarily by super capacitor, in terms of ensureing
The clock of amount core is accurate；And
Clock battery is prevented by the cut-off of the second diode and the 4th diode and stops copying battery to main power source charging.
In sum, using above-mentioned power management control method, no matter on main power source during electricity, or in main power source power-off
When, can realize carrying out independent current source supply to metering core and management core, so that metering core and management core being capable of independent works
Make, fully meet the independent power reguirements of the electric energy meter with metering core and management core.
Description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by.
Fig. 1 shows the electricity of the twin-core electric energy meter with novel power supply management control module according to embodiment of the present invention
Line structure figure.
Specific embodiment
With reference now to accompanying drawing, introduce the illustrative embodiments of the present invention.The present invention can be with many different forms come real
Apply, and be not limited to embodiment described herein, there is provided these embodiments be in order to disclose at large and fully the present invention,
And the scope of the present invention is fully passed on to person of ordinary skill in the field.For the exemplary enforcement being illustrated in the accompanying drawings
Term in mode is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical reference.
Unless otherwise stated, term (including scientific and technical terminology) used herein has common reason to person of ordinary skill in the field
Solution implication.Further it will be understood that the term limited with the dictionary being usually used, is appreciated that field associated therewith
Linguistic context there is consistent implication, and be not construed as Utopian or excessively formal meaning.
Fig. 1 is the circuit knot of the twin-core electric energy meter with novel power supply management control module according to embodiment of the present invention
Composition.As shown in figure 1, preferred embodiment of the invention, the twin-core electric energy meter includes metering core 1, management core 2 and electricity
Source control control module 3.
Preferably, metering core 1 is made up of metering units 11 and clock circuit RTC12, for realizing electric energy metrical function.Pipe
Reason core 2 is used for realizing the non-metering management function of electric energy meter, such as function such as data storage, transmission；Management core 2 includes that management is single
Unit 21, infrared facility 22, back light unit 23 and buzzer 24 etc., be provided with administrative unit 21 managing chip (CPU) 211,
Flash caches 212 and communication unit 213 etc..Power management control module 3 is built in electric energy meter, for metering core and
Management core carries out independent current source supply.
Preferably, the power management control module 3 includes：Main power source 31, its respectively with metering core in metering units
11 and clock circuit RTC12 and management core 2 electrically connect, for respectively to the metering units 11 and clock circuit in metering core
RTC12 and management core 2 provide power supply；Clock battery 33, which is electrically connected with the clock circuit RTC12 in metering core 1, for
Power supply is provided to metering core 1 and super capacitor 36 after main power source power-off；And stop copying battery 32, which is electrically connected with management core 2, is used
In after 3 power-off of main power source to management core 2 provide power supply.
Preferably, the power management control module 3 also includes a first diode D1, the first diode D1 strings
It is associated between Clock battery 33 and clock circuit RTC12, anode and Clock battery 3 are electrically connected, and negative electrode and clock circuit RTC12
Electrical connection, the first diode D1 are provided to clock circuit RTC12 for when electric on main power source 31, preventing Clock battery 33
Power supply.
Preferably, the power management control module 3 also includes a second diode D2, the second diode D2 strings
It is associated between main power source 3 and the first diode D1, anode is electrically connected with main power source 3, and the negative electrode of negative electrode and the first diode D1
Electrically connect with clock circuit RTC12, the second diode D2 is for when Clock battery 33 works, prevention Clock battery 33 is to main electricity
Charge in source 31.
Preferably, the power management control module 3 also include a super capacitor 36, its be located at the second diode D2 and
Between clock circuit RTC12, its role is to, when main power source 31 or Clock battery 33 are powered, charge super capacitor 36, when
31 power-off of main power source and when Clock battery 33 is under-voltage or Clock battery 33 is changed, super capacitor 36 is provided to clock circuit RTC12
Power supply.
Preferably, the power management control module 3 also includes that a 3rd diode D3, the 3rd diode D3 are connected on
Stop copying between battery 32 and management core 2, anode is electrically connected with stopping copying battery 32, and negative electrode and management core 2 are electrically connected, the three or two pole
Pipe D3 is for, when electric on main power source 31, prevention stops copying battery 32 to the management offer power supply of core 2.
Preferably, the power management control module 3 also includes that a 4th diode D4, the 4th diode D4 are located at master
Between power supply 31 and management core 2, anode is electrically connected with main power source 31, and the negative electrode and management core 2 of negative electrode and the 3rd diode D3
Electrical connection, for when stopping copying battery 32 and working, prevention stops copying battery 32 charges the 4th diode D4 to main power source 31.
Preferably, the power management control module 3 also includes a controlled switch 35, and the controlled switch 35 is arranged on
Metering units 11 in metering core 1 and between the negative electrode of the 3rd diode D3, and with the management core 2 for controlling its folding in management
Chip 211 is electrically connected.When 31 power-off of main power source, metering units 11 can control the folding of controlled switch 35 by managing core 2
To carry out one-time detection, so as to ensure that metering core 1 effectively completes detection process.
Preferably, the management core 2 of the twin-core electric energy meter also includes back light unit 23,23 yuan of the backlight list and main power source
31 electrical connections.
Preferably, the management core 2 of the twin-core electric energy meter also includes buzzer 24, and the buzzer 24 is electric with main power source 31
Connection.
Preferably, the management core 2 of the twin-core electric energy meter also includes infrared facility 22, the infrared facility and the four or two pole
The negative electrode electrical connection of pipe D4.
Preferably, the power management control module also includes five voltage transformation modules, for carrying out the voltage of circuit
Conversion, first voltage converter unit 341 are located between the first diode D1 and super capacitor 36, second voltage converter unit 342
Between the 4th diode D4 and management core 2, tertiary voltage converter unit 343 is located at the second diode D2 and metering units 11
Between, the 4th voltage transformation module 344 is located between main power source 31 and the 4th diode D4, the 5th voltage transformation module 345
In stopping copying between battery 32 and the 3rd diode D3.
As in actual applications, the voltage needed for administrative unit 21 in metering core 1 and management core 2 is 3.3V, infrared
Device 22, back light unit 23 and 24 required voltage of buzzer are higher, therefore when electricity on main power source 31, the 4th voltage transformation module
The voltage transformation of main power source 31 is 5.6V by 344, and the voltage of 5.6V is reduced to 5V, the voltage Jing second voltages of 5V Jing after D4 and D2
Converter unit 342 and first voltage converter unit 341 are respectively supplied to manage 21 He of administrative unit in core 2 after being transformed to 3.3V
Clock circuit RTC12 in metering core 1；
In another separate branches, when electricity on main power source 31, the 4th voltage transformation module 344 is by the electricity of main power source 31
After buckling is changed to 5.6V, the voltage that Jing tertiary voltages converter unit 343 is transformed to 3.3V is supplied to the metering units of metering core 1
11；
Infrared facility 22 is directly connected to the negative electrode of D4, and when electricity on main power source 31, the 4th voltage transformation module 344 will be main
The voltage transformation of power supply 31 is 5.6V, and the voltage of 5.6V is supplied to infrared facility 22 Jing after D4 is reduced to 5V.
Back light unit 23 and buzzer 24 are directly connected to the 4th converter unit 344, when electricity on main power source 31, main power source
31 voltages that 5.6V is provided to back light unit 23 and buzzer 24；
When electricity on main power source 31, the cathode voltage of D2 and D4 is 5V, and the anode voltage of D1 and D3 be respectively lower than D2 and
The cathode voltage of D4, therefore D1 and D3 cut-offs, so as to preventing main power source 31 to Clock battery 33 and stopping copying battery 32 and charge.
When electricity on main power source 31, main power source 31 to the clock circuit RTC in metering core 1 power supply is provided while to super
Electric capacity 36 charges.
When 31 power-off of main power source, Clock battery 33 provides power supply, its 3.6V to the clock circuit RTC12 in metering core 1
Voltage be converted to the voltage of 3.3V through D1 and by first voltage converter unit 341 after be supplied to clock circuit RTC12；
When 31 power-off of main power source, Clock battery 33 in metering core 1 clock circuit RTC12 provide power supply while to
Super capacitor 36 charges；
When 31 power-off of main power source, when Clock battery 33 is to clock circuit RTC12 offer power supplys, D2 cathode voltages are higher than anode
Voltage, D2 cut-offs prevent Clock battery 33 from charging to main power source 31；
When 31 power-off of main power source, stop copying battery 32 and electricity is provided to the administrative unit 21 in management core 2 and infrared facility 22
Source, the 5th voltage transformation modules 345 of voltage Jing of its 6V are converted to the voltage of 4.5V, and the 3rd diode D3 of Jing are reduced to 4.2V
Afterwards, infrared facility 22 is supplied directly to all the way, be supplied to all the way Jing after the voltage that second voltage converter unit 342 is converted to 3.3V
Administrative unit 21 in management core 2；
When 31 power-off of main power source, stop copying battery 32 and electricity is provided to the administrative unit 21 in management core 2 and infrared facility 22
Source, D4 cathode voltages are higher than anode voltage, D4 cut-offs, and prevention stops copying battery 32 charges to main power source 31；
When 31 power-off of main power source, in order to carry out the detection of the event such as abnormity of power supply and full decompression, managing chip 211 is controlled
Controlled switch 35 is closed, and now, metering units 11 obtain power supply, and managing chip 211 reads continuous data to computation chip 113,
To judge whether the external electrical line of force has electricity, after the completion of detection, the control of managing chip 211 controlled switch 35 disconnects, and metering units 11 stop
Only work.
When changing Clock battery 33, power supply is provided by super capacitor 36 is interim for the clock circuit RTC12 in metering core 1,
It is accurate with the clock for ensureing metering core 1.
Normally, all terms for using in the claims are all solved in the usual implication of technical field according to them
Release, unless clearly defined in addition wherein.It is all of to be all opened ground with reference to " one/described/be somebody's turn to do (device, component etc.) "
At least one of described device, component etc. example is construed to, unless otherwise expressly specified.Any method disclosed herein
Step all need not be run with disclosed accurate order, unless explicitly stated otherwise.
Claims (13)
1. a kind of twin-core electric energy meter, it is characterised in that the twin-core electric energy meter includes：
Metering core, is made up of clock circuit RTC and metering units, for realizing electric energy metrical function；
Management core, for realizing nonelectrical energy management through quantification function；And
Power management control module, for realizing carrying out independent current source supply to metering core and management core, so that metering core
Can work independently with management core.
2. twin-core electric energy meter according to claim 1, it is characterised in that the power management control module includes：
Main power source, which electrically connect with the metering units in metering core and clock circuit RTC and with management core respectively, for distinguishing
Power supply is provided to the metering units in metering core and clock circuit RTC and to management core；
Clock battery, which is electrically connected with the clock circuit RTC in metering core, for after main power source power-off to clock circuit RTC
Power supply is provided；And
Stop copying battery, which is electrically connected with management core, for providing power supply to management core after main power source power-off.
3. twin-core electric energy meter according to claim 2, it is characterised in that the power management control module also includes
First diode, between Clock battery and clock circuit RTC, anode and Clock battery are electrically connected first Diode series
Connect, and negative electrode electrically connected with clock circuit RTC, first diode for when on main power source electricity when, prevent Clock battery to
Clock circuit RTC provides power supply.
4. twin-core electric energy meter according to claim 3, it is characterised in that the power management control module also includes
Second diode, between main power source and the first diode, anode is electrically connected second Diode series with main power source, and cloudy
Pole is electrically connected with the negative electrode and clock circuit RTC of the first diode, second diode for when clock is battery operated, resistance
Only Clock battery charges to main power source.
5. twin-core electric energy meter according to claim 4, it is characterised in that the power management control module also includes
Super capacitor, which is located between the second diode and clock circuit RTC, and which is used for when main power source or Clock battery are powered, by
Main battery or Clock battery charge to the super capacitor, and work as main power source power-off and Clock battery is under-voltage or Clock battery more
When changing, super capacitor provides power supply to clock circuit RTC.
6. the twin-core electric energy meter according to claim 2 or 5, it is characterised in that the power management control module also includes
One the 3rd diode, which is connected on and stops copying between battery and management core, the anode of the 3rd diode with stop copying battery electricity
Connection, and negative electrode and management core electrical connection, the 3rd diode is for, when electric on main power source, prevention stops copying battery to management
Core provides power supply.
7. twin-core electric energy meter according to claim 6, it is characterised in that the power management control module also includes
4th diode, which is located between main power source and management core, and anode is electrically connected with main power source, and the moon of negative electrode and the 3rd diode
Pole and management core electrical connection, the 4th diode is for when stopping copying battery operated, prevention stops copying battery to main power source charging.
8. the twin-core electric energy meter according to claim 2 or 7, it is characterised in that the power management control module also includes
One controlled switch, the controlled switch are arranged between the negative electrode of the metering units in metering core and the 3rd diode, and with
The managing chip electrical connection in the management core of its folding is controlled, for powering for metering units in main power source power-off, is entered for which
Row event detection.
9. twin-core electric energy meter according to claim 1, it is characterised in that the management core also includes back light unit, described
Back light unit is electrically connected with main power source.
10. twin-core electric energy meter according to claim 1, it is characterised in that the management core also includes buzzer, the honeybee
Ring device is electrically connected with main power source.
11. twin-core electric energy meters according to claim 7, it is characterised in that the management core also includes infrared facility, described
Infrared facility is electrically connected with the negative electrode of the 4th diode.
12. twin-core electric energy meters according to claim 8, it is characterised in that the power management control module includes five
Voltage transformation module, for carrying out the voltage transformation of circuit, first voltage converter unit is located at the first diode and super capacitor
Between, second voltage converter unit is located between the 4th diode and management core, and tertiary voltage converter unit is located at the two or two pole
Between pipe and metering units, the 4th voltage transformation module is located between main power source and the 4th diode, and the 5th voltage transformation
Unit is located at and stops copying between battery and the 3rd diode.
13. twin-core electric energy meters according to claim 12, it is characterised in that the power supply control of the power management control module
Method processed includes：
When electricity on main power source：
One article of separate branches sequentially passes through the 4th voltage transformation module, the second diode and first voltage converter unit reduces voltage
Clock circuit RTC and super capacitor in backward metering core powers；
One article of separate branches sequentially pass through the 4th voltage transformation module and tertiary voltage converter unit is reduced after voltage to metering core
In metering units power；
One article of separate branches sequentially passes through the 4th voltage transformation module, the 4th diode and second voltage converter unit reduces voltage
Administrative unit in backward management core is powered；
One article of separate branches sequentially pass through the 4th voltage transformation module and the 4th diode is reduced after voltage to red in management core
Outer device is powered；
One article of separate branches is powered to the back light unit in management core after the 4th voltage transformation module reduces voltage；
One article of separate branches is powered to the buzzer in management core after the 4th voltage transformation module reduces voltage；And
Main power source is prevented to Clock battery by the cut-off of the first diode and the 3rd diode and stops copying battery charging；
When main power source power-off：
One separate branches sequentially passes through the first diode and first voltage converter unit by Clock battery and reduces after voltage as meter
Clock circuit RTC and super capacitor in amount core powers；
To sequentially pass through the conversion of the 5th voltage transformation module, the 3rd diode and second voltage single by stopping copying battery for one article of separate branches
Unit powers for the administrative unit in management core after reducing voltage, and the managing chip in administrative unit controls closing for controlled switch
Close, be that the metering units in metering core are powered, to ensure that computation chip completes event detection procedure；
One article of separate branches is pipe by stopping copying after battery sequentially passes through the 5th voltage transformation module and the 3rd diode reduction voltage
Infrared facility in reason core is powered；
When changing Clock battery, power supply is provided for the RTC in metering core temporarily by super capacitor, it is accurate with the clock for ensureing metering core
Really；And
Clock battery is prevented by the cut-off of the second diode and the 4th diode and stops copying battery to main power source charging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610903410.6A CN106532908B (en) | 2016-10-17 | 2016-10-17 | Double-core electric energy meter and power supply control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903410.6A CN106532908B (en) | 2016-10-17 | 2016-10-17 | Double-core electric energy meter and power supply control method thereof |
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| CN106532908A true CN106532908A (en) | 2017-03-22 |
| CN106532908B CN106532908B (en) | 2020-06-12 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414830A (en) * | 2018-02-05 | 2018-08-17 | 国网江苏省电力有限公司苏州供电分公司 | Twin-core intelligent electric meter with non-invasive powerline road breakdown judge function |
| CN108964245A (en) * | 2018-07-05 | 2018-12-07 | 杭州乾程弘泰电力科技有限公司 | A kind of detection of electric energy meter source and switching device |
| CN109142860A (en) * | 2018-08-22 | 2019-01-04 | 华立科技股份有限公司 | Wireless power electric energy meter |
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| CN110912259A (en) * | 2019-12-27 | 2020-03-24 | 广东电科院能源技术有限责任公司 | Clock power supply device |
| CN113447884A (en) * | 2021-07-06 | 2021-09-28 | 国网江苏省电力有限公司营销服务中心 | Automatic detection system and method for management core of intelligent Internet of things electric energy meter |
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