CN201674277U - Power management power supply module for electronic electric energy meter - Google Patents
Power management power supply module for electronic electric energy meter Download PDFInfo
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- CN201674277U CN201674277U CN2010202062955U CN201020206295U CN201674277U CN 201674277 U CN201674277 U CN 201674277U CN 2010202062955 U CN2010202062955 U CN 2010202062955U CN 201020206295 U CN201020206295 U CN 201020206295U CN 201674277 U CN201674277 U CN 201674277U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
Abstract
The utility model provides a power management power supply module for an electronic electric energy meter, which comprises a weak current main power supply circuit, a power monitoring circuit, a power down poke power supply circuit, a battery power supply circuit and a low-power consumption wakeup circuit and also comprises a master control chip low-power consumption management circuit, wherein the low-power consumption wakeup circuit is connected with the master control chip low-power consumption management circuit; the master control chip low-power consumption management circuit is connected with the weak current main power supply circuit; the power down poke power supply circuit and the battery power supply circuit are connected with the weak current main power supply circuit; a multi-output DC/DC high-efficiency power management chip is used as a power management chip in the weak current main power supply circuit, a DC/DC high-efficiency power chip is used as a main power chip, and the DC/DC high-efficiency power chip is used as a power chip in the power down poke power supply circuit, and finally, the weak current main power supply circuit has multi-power effective output all along. The utility model not only can make the high-performance chip applied to the electronic electric energy meter but also can make the electronic electric energy meter stably work in all power supply operating modes.
Description
Technical field
The utility model relates to a kind of power management supply module that is used for electronic electric energy meter.
Background technology
The chip that existing ammeter management platform adopts is single-chip microcomputer M16C/62P, and supply module is fairly simple, has only the low-power consumption pattern of checking meter.This module is generally by light current master current supply circuit, low-power consumption wake-up circuit, powered battery loop, power down poke power supply circuits, battery monitoring circuit and form, light current master current supply circuit wherein: have only one tunnel power source conversion, tps76933 changes 3.3V with 5V by the LDO chip.The low-power consumption wake-up circuit only provides level triggers, gives interrupt signal of single-chip microcomputer M16C/62P, does not need hardware circuit to switch.Switching between powered battery loop: powered battery+6V and the external circuit power supply+5V adopts the multiplex circuit triode to switch, as: Liquid Crystal Module power supply, infrared power supply, the power supply of interior card, CPU power supply all have corresponding commutation circuit respectively.Power down poke power supply circuits: 25V changes the former employing of 5V power supply chip LDO power supply chip.Power supply supervisory circuit:, give level signal of single-chip microcomputer M16C/62P with whether power down of No. one comparison circuit monitoring 25V (12V that is equivalent to our ammeter); Battery monitoring circuit adopts comparator LM239, and output level is delivered to level signal of single-chip microcomputer M16C/62P.Its powering mode is few as can be seen from the formation of the power management supply module of existing electric energy meter, does not have low power sleep mode, can't satisfy high performance chip application in electronic electric energy meter.
The utility model content
The purpose of this utility model is to provide a kind of power management supply module that is used for electronic electric energy meter, and this module can make high performance chip application in electronic electric energy meter, can make electronic electric energy meter steady operation under each powered operation pattern again.
This power management supply module that is used for electronic electric energy meter that the utility model provides, comprise light current master current supply circuit, power supply supervisory circuit, power down poke power supply circuits, battery feed circuit, the low-power consumption wake-up circuit, also comprise main control chip low-power consumption management circuit, described low-power consumption wake-up circuit links to each other with main control chip low-power consumption management circuit, main control chip low-power consumption management circuit links to each other with described light current master current supply circuit, power down poke power supply circuits and battery feed circuit are connected with light current master current supply circuit, light current master current supply circuit comprises power management chip, low pressure reduction power supply chip and main power source chip, wherein power management chip adopts multichannel output DC/DC efficient power managing chip, the main power source chip adopts DC/DC efficient power chip, power down poke power supply circuits comprise storage capacitor and power supply chip, this power supply chip adopts DC/DC efficient power chip, power supply supervisory circuit detects externally fed system and power down poke power supply circuits by voltage detecting circuit, detected battery feed circuit when externally electric power system inefficacy and power down poke power supply circuits lose efficacy, and finally made light current master current supply circuit that multiple power supplies output is arranged all the time.
Described DC/DC efficient power management core is that TPS650240RHBT, low pressure reduction power supply chip adopt TPS73250DBVR, and the main power source chip adopts DC/DC efficient power chip LM2830X.The integrated low-power consumption management circuit of AT91SAM9G20 chip that described main control chip low-power consumption management circuit utilizes atmel corp.The charging voltage of storage capacitor adopts 12V in the power down poke power supply circuits, and it is to power to electronic electric energy meter the 5.2V short time with voltage transitions that power supply chip adopts DC/DC efficient power chip.The low-power consumption wake-up circuit adopts button or laser or adopts the externally fed system to power on and wake electronic electric energy meter up.Power supply chip adopts DC/DC efficient power chip LM2736X.
The utility model is owing to the employing of the power management chip in the light current master current supply circuit is the DC/DC efficient power managing chip of multichannel output, and what the power supply chip of main power source chip and down circuit adopted is DC/DC efficient power chip, power supply supervisory circuit finally makes light current master current supply circuit have multiple power supplies effectively to export all the time to the monitoring of outside electric power system, power down poke power supply circuits and battery feed circuit in addition.The output of multiple power supplies makes the main control chip of electronic electric energy meter can adopt high performance chip, has accelerated the paces that electronic electric energy meter strides forward to intelligent electric meter.The increase of the utility model main control chip low-power consumption management circuit, not only make powering mode increase sleep pattern, and, make electronic electric energy meter self supply module under various powered operation patterns stably to work by highly effective and safe by the control of tight supervisory circuit.Battery-powered realization meter-reading function when the utility model can satisfy electronic electric energy meter externally electric power system lost efficacy, can long-rangely report the not enough situation of battery electric quantity, real-time parameter in the time of preserving externally fed thrashing and load data are guaranteed the security reliability of electronic electric energy meter continuous data.Each circuit in design process, stress logic careful, cooperate closely, wherein most critical partly be the combination of soft or hard resource, rationally controls and ingenious utilization, finally forms the power management supply module of reliable and stable electronic electric energy meter.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a fundamental diagram of the present utility model;
Fig. 3 is the change-over circuit of forceful electric power and light current in power down poke circuit of the present utility model and the main current supply circuit, AC/DC;
Fig. 4 is 5.2V detection of power loss, a battery switching circuit in the power supply circuits of administrative unit in the main current supply circuit of the present utility model and the power supply supervisory circuit;
Fig. 5 is that 12V powers on and power-fail detection circuit in the power supply supervisory circuit of the present utility model;
Fig. 6 is a low-power consumption wake-up circuit of the present utility model;
Fig. 7 is a metering units power-supplying circuit in the current supply circuit of metering units in the main current supply circuit of the present utility model and the power supply supervisory circuit;
Fig. 8 is a main control chip low-power consumption management circuit of the present utility model;
Fig. 9 is a real-time clock battery electric quantity testing circuit in real-time clock battery feed circuit and the power supply supervisory circuit in the battery feed circuit of the present utility model.
Embodiment
As shown in Figure 1, the disclosed this power management supply module that is used for electronic electric energy meter of the utility model comprises main current supply circuit, light current master current supply circuit, power supply supervisory circuit, power down poke power supply circuits, battery feed circuit, low-power consumption wake-up circuit and main control chip low-power consumption management circuit, wherein main current supply circuit is a power supply supervisory circuit, light current master current supply circuit and power down poke circuit provide power supply, light current master current supply circuit is the core of this module, it and power down poke circuit, battery feed circuit, main control chip low-power consumption management circuit links to each other, power down poke circuit provided instantaneous power supply to light current master current supply circuit when externally supply module loses efficacy, guarantee that the important parameter and the data of electronic electric energy meter do not lose, battery feed circuit is as a kind of backup battery, externally provide temporary transient power supply to light current master current supply circuit under the situation that electric power system and power down poke circuit all lost efficacy, satisfy the not power down of the special important circuit of electronic electric energy meter, realize that externally fed still possessed meter-reading function when losing efficacy, also guarantee simultaneously the accuracy of real-time clock, improved the security reliability of electronic electric energy meter continuous data, light current master current supply circuit links to each other with main control chip low-power consumption management circuit, for main control chip low-power consumption management circuit provides the multichannel stable operating voltage, power supply supervisory circuit and main current supply circuit, battery feed circuit links to each other, detect externally fed system and power down poke power supply circuits by voltage detecting circuit, switched to battery feed circuit when externally electric power system inefficacy and power down poke power supply circuits lost efficacy, finally make light current master current supply circuit that multiple power supplies output is arranged all the time, the low-power consumption wake-up circuit links to each other with main control chip low-power consumption management circuit, switches the external control signal input port of (switching to the mode of operation of checking meter by the SLEEP mode of operation) for main control chip low-power consumption management circuit provides the module mode of operation.
As shown in Figure 2, the current supply circuit of the electronic electric energy meter when main current supply circuit is externally fed system operate as normal, main current supply circuit is mainly by the externally fed system, filter rectifier, Switching Power Supply, compositions such as transformer, wherein Switching Power Supply adopts single-end flyback switching power supply, provide 220V (accessory power supply power supply) or 57.5V (PT power supply) by the externally fed system, via rectification, filtering, Switching Power Supply, after transformer is handled, realize forceful electric power and light current, the conversion of AC/DC, generate 12V and 5.2V, 12V is used for the storage capacitor charging to power down poke circuit, and 5.2V is power management chip TPS650240RHBT, low pressure poor chip TPS73250DBVR, main power source chip LM2830X provides operating voltage (referring to Fig. 3).Power down poke power supply circuits are a kind of power supply circuits in short-term, form by 12V storage capacitor and DC/DC power supply chip LM2736X, main current supply circuit charges to the 12V storage capacitor, when abnormal electrical power supply appears in main current supply circuit, the discharge of 12V charging capacitor, is 5.2V by DC/DC power supply chip LM2736X with the 12V effective conversion, give the instantaneous power supply of module, physical circuit is seen Fig. 3, this circuit has lot of advantages, such as: when both having made powered battery invalid, can guarantee that also management platform preserves the important parameter and the data of electric energy meter in real time, and the state of record power loss event and accident externally fed circuit when taking place, when the externally fed system re-powers, electric energy meter reports power loss event, the real time data when uploading power down simultaneously.These power supply circuits adopt high-performance power supply chip LM2736X, make power down poke time lengthening to minimum 2S, have improved the digital electric energy meter data stability greatly.Light current master current supply circuit is by power management chip TPS650240RHBT, main power source chip LM2830X, low pressure reduction power supply chip TPS73250DBVR forms, power management chip provides the multichannel input voltage for main control chip, main power source chip and low pressure reduction power supply chip provide input voltage for the metering units in the main control chip, three of power management chip Enable Pin E1 wherein, E2, E3 links to each other with the nSHDW pin (low level is effective) of main control chip, the Enable Pin EN of main power source chip and low pressure reduction power supply chip links to each other with the GPIO mouth of main control chip, thereby guarantee adjusting and the control of main control chip to light current master current supply circuit, the reasonable distribution modular power source improves the power utilization rate.Power supply supervisory circuit is made up of 5V power-fail detection circuit (see figure 4), 12V power-fail detection circuit (see figure 5) and battery electric quantity testing circuit, it is the hinge of software and combination of hardware, the 12V detection of power loss, indication externally fed system lost efficacy, notice ARM management platform is done relevant power down process, this moment, management platform was turn-offed the metering units supply module, and physical circuit is seen Fig. 5 and Fig. 7; 5.2V detection of power loss, the electric weight of indication storage capacitor exhausts, and automatically switch to module main battery power supply by switching tube this moment, and concrete commutation circuit is seen Fig. 4, and switching tube has adopted the MOSFET pipe of the low pressure reduction of conducting; Battery electric quantity detects, physical circuit is seen Fig. 4 and Fig. 9, main battery voltage is by the AD sample detecting of ARM, the battery electric quantity of module real-time timepiece chip RTC detects by voltage comparator circuit, the data that the former obtains are analog quantity, and the data that the latter obtains are digital quantity, so the former shows information about power by conitnuous forms, and the latter can only notify client's current electric quantity to be higher than or be lower than certain magnitude of voltage, and the specific design value is determined according to the minimum operating voltage of chip.This power supply logics had both made full use of the energy of storage capacitor, saved battery electric quantity again, also realized the seamless switching of each power supply simultaneously, made light current master current supply circuit that multiple power supplies output be arranged all the time, was a kind of scientific and reasonable monitoring mode.Battery feed circuit comprises main battery power supply circuits and module real-time timepiece chip RTC battery feed circuit, it is a kind of emergency supply circuit, physical circuit is seen Fig. 4, when externally fed thrashing, the time that power down poke power supply circuits can only be kept 1.2S is if require management platform to upload information and data this moment, then need reserce cell to give module for power supply, when management platform and host computer did not have business, module entered the Sleep pattern, to prolong the useful life of reserce cell.The module real-time clock must guarantee that accurately and reliably chip needs long-time power supply, so real-time timepiece chip is equipped with battery, realizes main power source power supply and battery powered switching in the chip, and preferential for the main power source power supply, effectively prolongs the useful life of battery.According to the monitor data that power supply supervisory circuit obtains, management platform is presented at the battery current state on the liquid crystal display screen in real time, is uploaded to host computer simultaneously, thereby avoids module power down owing to the battery electric quantity deficiency, further the stability of assurance module power supply.Main control chip low-power consumption management circuit is the embedded Sleep control circuit of ARM, and externally controlling pin is nSHDN and nWAKEUP, and physical circuit is seen Fig. 4 and Fig. 8.The nSHDN pin is the effective output pin of low level, connects the pin that enables of power management chip TPS650240RHBT by the reverse back of triode.In order to strengthen the antijamming capability of this pin, increased the one-level driving in the side circuit design.The ARM main control chip is according to reasonable logic control power management chip TPS650240RHBT, and the output of turn-offing main power source makes module enter the Sleep pattern.The nWAKEUP pin is the effective input pin of low level, when nWAKEUP owing to button wake-up circuit, laser wake-up circuit, the wake-up circuit that powers on are put when low, the nSHDN pin discharges, the module main power source is opened, management platform is recovered operate as normal, enable TPS73250DBVR, LM2830X this moment, opens the metering units power supply.The low-power consumption wake-up circuit comprises button wake-up circuit, laser wake-up circuit, the wake-up circuit that powers on, and physical circuit is seen Fig. 5 and Fig. 6.The button wake-up circuit is put the nWAKEUP pin low by the electric energy meter panel button, trigger the wake-up circuit work of main control chip low-power consumption management circuit, the nSHDN pin is released and puts height, enables power management chip TPS650240RHBT, and the module main power source recovers the power supply to management platform.Equally, laser wake-up circuit, the wake-up circuit that powers on to wake principle up similar.The laser wake-up circuit mainly is to come the conducting photodiode by the operation laser pen, and circuit is put low by the reverse back control of triode nWAKEUP pin.Power on wake-up circuit dexterously by the voltage stabilizing of voltage-stabiliser tube clamper, directly adopt resistor network sampling 12V power supply, sampled signal control nWAKEUP pin after triode is reverse is put low, this circuit satisfy electronic electric energy meter externally electric power system recover just often from the Sleep pattern, to wake up, enter normal mode of operation.
Work characteristics according to the power management supply module of the disclosed this electronic electric energy meter of the utility model is divided into four kinds of mode of operations with its operating state, i.e. normal power supply pattern, power down poke powering mode, low-power consumption check meter pattern and low power sleep mode.The power supply state of electronic electric energy meter when the normal power supply pattern is meant externally fed system operate as normal; Power down poke pattern be meant externally fed thrashing and storage capacitor can also normal power supply the power supply state of electronic electric energy meter; The low-power consumption pattern of checking meter is meant that the management platform of electronic electric energy meter is by the power supply state of module main battery power supply under the situation that externally electric power system and power down poke power supply circuits all lost efficacy; Low power sleep mode is meant that electronic electric energy meter only gives integrated low-power consumption management circuit of main control chip and wake-up circuit power supply, and this pattern powers on by button, laser and externally fed system and electronic electric energy meter is waken up enter other mode of operation.
The concrete working method of power management supply module of the disclosed this electronic electric energy meter of the utility model is as follows:
When main current supply circuit is powered just often, it is the normal power supply pattern, storage capacitor in the power down poke circuit keeps charging, this moment, battery feed circuit was not enabled, power supply supervisory circuit is opened, main current supply circuit, power down poke power supply circuits and battery electric quantity are monitored in real time, and reported management platform, circuit working state and main control chip monitor state keep synchronously.When main current supply circuit power supply appearance is unusual, it is power down poke powering mode, power supply supervisory circuit detects the 12V power-off signal, trigger the GPIO mouth level translation of main control chip, the notice management platform is turn-offed TPS73250DBVR and LM2830X by the GPIO mouth, storage capacitor discharge in the power down poke power supply circuits, is 5V voltage to module temporarily power (can keep 2 seconds approximately) by power supply chip LM2736X with the 12V voltage transitions, in case the instantaneous power supply of module appears giving when unusual in main current supply circuit, guarantee that management platform preserves the important parameter and the data of electric energy meter in real time, and the state of record power loss event and accident externally fed circuit when taking place, after power down poke power supply circuits lost efficacy (storage capacitor discharge off), module enters the low-power consumption pattern of checking meter, electronic electric energy meter self power supply automatically switches to the main battery power supply by switching tube, power supply supervisory circuit detects battery electric quantity simultaneously, electric weight is shown in real time and report electric weight by main control chip, when management platform and host computer do not have business, integrated low-power consumption management circuit is triggered in the main control chip, electronic electric energy meter is only given integrated low-power consumption management circuit of main control chip and wake-up circuit power supply, module enters low power sleep mode, to prolong the useful life of reserce cell.When main current supply circuit recovers module for power supply, nWAKEUP is owing to button wake-up circuit, laser wake-up circuit, the wake-up circuit that powers on are put low, the nSHDN pin discharges, module enables power management chip TPS650240RHBT, also enable simultaneously low pressure reduction power supply TPS73250DBVR, main power source chip LM2830X, open the metering units power supply, management platform is recovered operate as normal, the important parameter and the data of electric energy meter during the power down of real-time report module, and the state of power loss event and accident externally fed circuit when taking place gives host computer, and module enters the normal power supply pattern.
Claims (6)
1. power management supply module that is used for electronic electric energy meter, comprise light current master current supply circuit, power supply supervisory circuit, power down poke power supply circuits, battery feed circuit, the low-power consumption wake-up circuit, it is characterized in that also comprising main control chip low-power consumption management circuit, described low-power consumption wake-up circuit links to each other with main control chip low-power consumption management circuit, main control chip low-power consumption management circuit links to each other with described light current master current supply circuit, power down poke power supply circuits and battery feed circuit are connected with light current master current supply circuit, light current master current supply circuit comprises power management chip, low pressure reduction power supply chip and main power source chip, wherein power management chip adopts multichannel output DC/DC efficient power managing chip, the main power source chip adopts DC/DC efficient power chip, power down poke power supply circuits comprise storage capacitor and power supply chip, this power supply chip adopts DC/DC efficient power chip, power supply supervisory circuit detects externally fed system and power down poke power supply circuits by voltage detecting circuit, switched to battery feed circuit when externally electric power system inefficacy and power down poke power supply circuits lose efficacy, and finally made light current master current supply circuit have multiple power supplies effectively to export all the time.
2. the power management supply module that is used for electronic electric energy meter according to claim 1, it is characterized in that described DC/DC efficient power managing chip is that TPS650240RHBT, low pressure reduction power supply chip adopt TPS73250DBVR, the main power source chip adopts DC/DC efficient power chip LM2830X.
3. the power management supply module that is used for electronic electric energy meter according to claim 1 and 2 is characterized in that the integrated low-power consumption management circuit of AT91SAM9G20 chip that described main control chip low-power consumption management circuit utilizes atmel corp.
4. the power management supply module that is used for electronic electric energy meter according to claim 1 and 2, the charging voltage that it is characterized in that storage capacitor in the power down poke power supply circuits adopts 12V, and it is to power to electronic electric energy meter the 5V short time with voltage transitions that power supply chip adopts DC/DC efficient power chip.
5. the power management supply module that is used for electronic electric energy meter according to claim 1 and 2 is characterized in that the low-power consumption wake-up circuit adopts button or laser or employing externally fed module to power on and wakes electronic electric energy meter up.
6. the power management supply module that is used for electronic electric energy meter according to claim 4 is characterized in that power supply chip adopts DC/DC efficient power chip LM2736X.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202062955U CN201674277U (en) | 2010-05-28 | 2010-05-28 | Power management power supply module for electronic electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202062955U CN201674277U (en) | 2010-05-28 | 2010-05-28 | Power management power supply module for electronic electric energy meter |
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| CN201674277U true CN201674277U (en) | 2010-12-15 |
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Cited By (4)
| 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 |
| CN104880604A (en) * | 2015-06-12 | 2015-09-02 | 浙江正泰仪器仪表有限责任公司 | Electric energy meter supply circuit and electric energy meter employing same |
| CN108762468A (en) * | 2018-05-17 | 2018-11-06 | 深圳友讯达科技股份有限公司 | Low-power-consumptiocontrol control method and device |
| CN113809804A (en) * | 2021-09-22 | 2021-12-17 | 深圳矽递科技股份有限公司 | Low dropout power supply circuit and portable low-power consumption equipment |
-
2010
- 2010-05-28 CN CN2010202062955U patent/CN201674277U/en not_active Expired - Lifetime
Cited By (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 |
| CN101841187B (en) * | 2010-05-28 | 2012-05-23 | 威胜集团有限公司 | Power management power supply system for electronic electric energy meter |
| CN104880604A (en) * | 2015-06-12 | 2015-09-02 | 浙江正泰仪器仪表有限责任公司 | Electric energy meter supply circuit and electric energy meter employing same |
| CN104880604B (en) * | 2015-06-12 | 2017-10-10 | 浙江正泰仪器仪表有限责任公司 | Electric energy meter power supply circuit and the electric energy meter using the circuit |
| CN108762468A (en) * | 2018-05-17 | 2018-11-06 | 深圳友讯达科技股份有限公司 | Low-power-consumptiocontrol control method and device |
| CN113809804A (en) * | 2021-09-22 | 2021-12-17 | 深圳矽递科技股份有限公司 | Low dropout power supply circuit and portable low-power consumption equipment |
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Granted publication date: 20101215 Effective date of abandoning: 20120523 |