CN203674792U - Standby power supply for electronic apparatus - Google Patents
Standby power supply for electronic apparatus Download PDFInfo
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- CN203674792U CN203674792U CN201320881073.7U CN201320881073U CN203674792U CN 203674792 U CN203674792 U CN 203674792U CN 201320881073 U CN201320881073 U CN 201320881073U CN 203674792 U CN203674792 U CN 203674792U
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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
- 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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Abstract
The utility model relates to a standby power supply for an electronic apparatus. The standby power supply is characterized in that the standby power supply comprises a standby power output end and an electronic apparatus auxiliary power input end; a semiconductor switching piece is arranged between the standby power output end and the electronic apparatus auxiliary power input end; the semiconductor switching piece is also connected with a micro-power consumption controller; the micro-power consumption controller is powered by the standby power supply and receives a control command of a main system of the electronic apparatus through a communication interface; and the micro-power consumption controller stores the received control command on a nonvolatile memory on a chip of the micro-power consumption controller and controls the switching on or switching off of the semiconductor switching piece according to the control command, thereby controlling the connection or disconnection of the standby power supply. The technical scheme provided by the standby power supply can prolong the service life of the standby power supply and protect safety of the electronic apparatus.
Description
Technical field
The utility model relates to stand-by power supply, relates in particular to electronic equipment stand-by power supply and control method thereof, belongs to stand-by power supply control technology field.
Background technology
Stand-by power supply is one of requisite formation of many electronic equipments; while its role is to the primary source failure when instrument and equipment, stand-by power supply can be protected volatile memory contents, records possible fault data, points out fault type, maintain the even all normal operations of systems of instrument and equipment part.Stand-by power supply adopts the combination of battery or battery and pressurizer to realize conventionally.
Early stage stand-by power supply and main power source adopt two diode realizations cheaply to automatically switch, and still, the pressure drop meeting of diode reduces the voltage of supplying with device, shortens battery life.Along with the raising of the technology of semiconductor chips, in succession there is the integrated solution such as power supply duplex device, battery backup IC, the microcontroller chip of some model has also increased accessory power supply input, in order to access stand-by power supply.
There is the problem of two aspects in the stand-by power supply control solution of existing electronic equipment, on the one hand, most variations causes the stand-by power supply state in access all the time, storage, transportation and Installation and Debugging stage before the final use of electronic equipment begin all in electriferous state, not only affect the life-span of stand-by power supply, and threaten the safety of electronic equipment; On the other hand, can only control the electrical source exchange of master chip self with the microcontroller chip scheme of accessory power supply input, the power supply control of other parts to system (as backlight in LCD etc.) is helpless, and range of application is subject to restriction to a certain extent.For the phenomenon existing in prior art, a kind of new technical scheme of exigence solves above-mentioned technical problem.
Utility model content
The utility model, just for the technical problem existing in prior art, provides a kind of electronic equipment stand-by power supply and control method thereof, and this technical scheme can be safeguarded the useful life of stand-by power supply effectively, the safety of protection electronic equipment.
To achieve these goals, the technical solution of the utility model is as follows, a kind of electronic equipment stand-by power supply, it is characterized in that, described stand-by power supply comprises stand-by power supply output, electronic equipment accessory power supply input, between described stand-by power supply output and electronic equipment accessory power supply input, be provided with semiconductor switch device, described semiconductor switch device is also connected with micro-power consumption control device, described micro-power consumption microcontroller is powered by stand-by power supply, utilize its communication interface to receive the control command of electronic equipment main system, micro-power consumption microcontroller is stored in the control command receiving in the nonvolatile memory on its sheet, and according to conducting or the cut-off of control command control semiconductor switch device, thereby control access or the disconnection of stand-by power supply.
As a kind of improvement of the present utility model, described micro-power consumption microcontroller is set to PIC12LF1822.In the time of normal work, the electric current of this chip is 8 μ A, and in the time of sleep pattern, operating current only has 0.8 μ A, the loss of further lowering electric weight.
As a kind of improvement of the present utility model, described semiconductor switch device is set to IRLML6402, its source electrode is connected with the output of stand-by power supply, drain electrode is connected with electronic equipment accessory power supply input (4), and grid is controlled output pin with micro-power consumption microcontroller (2) and is connected.
A kind of electronic equipment stand-by power supply control method, it is characterized in that, described stand-by power supply comprises stand-by power supply output, electronic equipment accessory power supply input, describedly between stand-by power supply output and electronic equipment accessory power supply input, be connected a semiconductor switch device, described semiconductor switch device is also connected with micro-power consumption control device, utilize the micro-power consumption microprocessor controls of a slice semiconductor switch device, described micro-power consumption microcontroller is powered by stand-by power supply, utilize its communication interface to receive the control command of electronic equipment main system, micro-power consumption microcontroller is stored in the control command receiving in the nonvolatile memory on its sheet, and according to conducting or the cut-off of control command control semiconductor switch device, thereby control access or the disconnection of stand-by power supply.
As a kind of improvement of the present utility model, described micro-power consumption microcontroller is set to PIC12LF1822.
As a kind of improvement of the present utility model, described semiconductor switch device is set to IRLML6402, its source electrode is connected with the output of stand-by power supply, drain electrode is connected with electronic equipment accessory power supply input (4), and grid is controlled output pin with micro-power consumption microcontroller (2) and is connected.
As a kind of improvement of the present utility model, described control procedure is as follows, the control command output normality of instrument and equipment main system is low level, represent the access control order of stand-by power supply and disconnect control command by the length of output high level lasting time, if be output as stand-by power supply access control order, the high level that output continued for 8 seconds; Otherwise output continues the high level in 4 seconds; Main system is only sent effective control command in following two kinds of situations, and other times all maintain invalid low level: (1) main system reset initialization; (2) stand-by power supply switching arranges change; Microcontroller long-term work is in sleep pattern, every a second by sheet on clock wake up once, can greatly reduce the loss of stand-by power supply.When microcontroller works in sleep pattern, it is controlled output pin level and remains unchanged; While being waken up, microcontroller checks the level of its communication interface at every turn, if communication interface is high level, communications counter adds 1 and recover sleep state; If if communication interface is low level, carry out corresponding operation according to the numerical value of communications counter, specific as follows: (1), if communications counter is 0, recovers sleep state; (2) if communications counter numerical value is greater than 6, revising control command in E2PROM is " stand-by power supply access ", and output pin sets low level, and communications counter zero clearing recovers sleep state; (3) if communications counter is for being greater than 2 and be less than 5, revising control command in E2PROM be " stand-by power supply disconnection ", and output pin sets high level, communications counter zero clearing, recovery sleep state.
With respect to prior art, the beneficial effects of the utility model are as follows: 1) this Technical Design is ingenious, by semiconductor switch device being set between stand-by power supply output and electronic equipment accessory power supply input, and micro-power consumption control device, utilize its communication interface to receive the control command of electronic equipment main system, micro-power consumption microcontroller is stored in the control command receiving in the nonvolatile memory on its sheet, and according to conducting or the cut-off of control command control semiconductor switch device, thereby access or the disconnection of control stand-by power supply; 2) can utilize easily the switching of the man-machine interface control stand-by power supply of electronic equipment by micro-power consumption control device, and in the time of instrument and equipment primary source failure, still can guarantee the control default to stand-by power supply.
Accompanying drawing explanation
Fig. 1 is preferred embodiment schematic diagram of this practical the utility model;
Fig. 2 is microcontroller main flow chart;
Fig. 3 is that microcontroller wakes rear workflow diagram up.
In figure: 1 semiconductor switch, 2 microcontrollers, 3 stand-by power supplies, 4 power inputs, 5 communication interfaces.
Embodiment
In order to deepen, to understanding and cognition of the present utility model, below in conjunction with the drawings and specific embodiments, the utility model to be made further instructions and introduced.
embodiment 1:
Referring to Fig. 1, a kind of electronic equipment stand-by power supply, described stand-by power supply comprises stand-by power supply output, electronic equipment accessory power supply input 4, between described stand-by power supply output and electronic equipment accessory power supply input 4, be provided with semiconductor switch device 1, described semiconductor switch device is also connected with micro-power consumption control device, described micro-power consumption microcontroller is powered by stand-by power supply, utilize its communication interface to receive the control command of electronic equipment main system, micro-power consumption microcontroller is stored in the control command receiving in the nonvolatile memory on its sheet, and according to conducting or the cut-off of control command control semiconductor switch device, thereby control access or the disconnection of stand-by power supply.
embodiment 2:
Referring to Fig. 1, as a kind of improvement of the present utility model, described micro-power consumption microcontroller is set to PIC12LF1822.In the time of normal work, the electric current of this chip is 8 μ A, and in the time of sleep pattern, operating current only has 0.8 μ A, the loss of further lowering electric weight.All the other structures are identical with embodiment 1 with advantage.
embodiment 3:
Referring to Fig. 1, as a kind of improvement of the present utility model, described semiconductor switch device is set to IRLML6402, and its source electrode is connected with the output of stand-by power supply, drain electrode is connected with electronic equipment accessory power supply input 4, and grid is controlled output pin with micro-power consumption microcontroller 2 and is connected.All the other structures are identical with embodiment 1 with advantage.
embodiment, 4:
Referring to Fig. 1, a kind of electronic equipment stand-by power supply control method, described stand-by power supply comprises stand-by power supply output, electronic equipment accessory power supply input 4, describedly between stand-by power supply output and electronic equipment accessory power supply input, be connected a semiconductor switch device 1, described semiconductor switch device 1 is also connected with micro-power consumption control device 2, utilize the micro-power consumption microprocessor controls of a slice semiconductor switch device, described micro-power consumption microcontroller is powered by stand-by power supply 3, utilize its communication interface to receive the control command of electronic equipment main system, micro-power consumption microcontroller is stored in the control command receiving in the nonvolatile memory on its sheet, and according to conducting or the cut-off of control command control semiconductor switch device, thereby control access or the disconnection of stand-by power supply, described micro-power consumption microcontroller is set to PIC12LF1822.Described semiconductor switch device is set to IRLML6402, and its source electrode is connected with the output of stand-by power supply, and drain electrode is connected with electronic equipment accessory power supply input 4, and grid is controlled output pin with micro-power consumption microcontroller 2 and is connected.Described control procedure is as follows, the control command output normality of instrument and equipment main system is low level, represent the access control order of stand-by power supply and disconnect control command by the length of output high level lasting time, if be output as stand-by power supply access control order, the high level that output continued for 8 seconds; Otherwise output continues the high level in 4 seconds; Main system is only sent effective control command in following two kinds of situations, and other times all maintain invalid low level: (1) main system reset initialization; (2) stand-by power supply switching arranges change; Microcontroller long-term work is in sleep pattern, every a second by sheet on clock wake up once, can greatly reduce the loss of stand-by power supply.When microcontroller works in sleep pattern, it is controlled output pin level and remains unchanged; While being waken up, microcontroller checks the level of its communication interface at every turn, if communication interface is high level, communications counter adds 1 and recover sleep state; If if communication interface is low level, carry out corresponding operation according to the numerical value of communications counter, specific as follows: (1), if communications counter is 0, recovers sleep state; (2) if communications counter numerical value is greater than 6, revising control command in E2PROM is " stand-by power supply access ", and output pin sets low level, and communications counter zero clearing recovers sleep state; (3) if communications counter is for being greater than 2 and be less than 5, revising control command in E2PROM be " stand-by power supply disconnection ", and output pin sets high level, communications counter zero clearing, recovery sleep state.
specific works principle is as follows:
Referring to Fig. 1-Fig. 3, in the present embodiment, microcontroller is selected PIC12LF1822.At normal temperatures, this chip running current is 8 μ A, and in the time of sleep pattern, operating current only has 0.8 μ A.Referring to Fig. 2, after microcontroller electrification reset, completing after conventional initialization operation, from the assigned address of its E2PROM, take out control command, determine conducting or the cut-off of MOSFET according to this control command.The content of considering its storage when E2PROM uses is first generally 0xFF, specifying in the present embodiment 0xFF is that stand-by power supply disconnects control command, 0xAA is stand-by power supply access control order, and the stand-by power supply that may occur while use of avoiding powering on first surprisingly accesses.Be designated as stand-by power supply access if take out control command, microcontroller is controlled output pin, in the present embodiment for the RA4 of PIC12LF1822 sets low level, the grid of controlling MOSFET is low level, MOSFET conducting, stand-by power supply accesses the accessory power supply input of electronic equipment by MOSFET; Be designated as stand-by power supply disconnection if take out control command, microcontroller is controlled output pin and is set high level, and the grid of controlling MOSFET is high level, MOSFET cut-off, and stand-by power supply disconnects.By the operation of instrument and equipment man-machine interface being arranged and be recorded the switching of stand-by power supply.The control command output normality of instrument and equipment main system is low level, is represented the access control order of stand-by power supply and is disconnected control command by the length of output high level lasting time.If be output as stand-by power supply access control order, the high level that output continued for 8 seconds; Otherwise output continues the high level in 4 seconds.Main system is only sent effective control command in following two kinds of situations, and other times all maintain invalid low level: (1) main system reset initialization; (2) stand-by power supply switching arranges change.Microcontroller long-term work is in sleep pattern, every a second by sheet on clock wake up once, can greatly reduce the loss of stand-by power supply.When microcontroller works in sleep pattern, it is controlled output pin level and remains unchanged.While being waken up, microcontroller checks the level of its communication interface (in the present embodiment for PIC12LF1822 RA2) at every turn, if communication interface is high level, communications counter adds 1 and recover sleep state; If if communication interface is low level, carry out corresponding operation according to the numerical value of communications counter, specific as follows: (1), if communications counter is 0, recovers sleep state; (2) if communications counter numerical value is greater than 6, revising control command in E2PROM is " stand-by power supply access ", and output pin sets low level, and communications counter zero clearing recovers sleep state; (3) if communications counter is for being greater than 2 and be less than 5, revising control command in E2PROM be " stand-by power supply disconnection ", and output pin sets high level, communications counter zero clearing, recovery sleep state.Adopt the communication mode of high level lasting time Length Indication, reduce the requirement to receiving equipment, the level height that microcontroller only need detect communication interface while being waken up in timing just can reliable reception control command, without the participation of other peripheral hardwares, has reduced the power consumption of microcontroller.The normality low level output pattern of instrument and equipment main system control command also can further reduce the power consumption of micro-controller communications interface.Due to for control command be stored in the nonvolatile memory (E2PROM) of microcontroller, the microprocessor causing due to any reason resets and still can guarantee set control to stand-by power supply and without the intervention of instrument and equipment main system.The method that microcontroller adopts the pattern of stand-by power supply power supply to determine that the utility model provides can arrange flexibly according to electronic equipment status the switching of stand-by power supply, the different failure mode of reply electronic equipment main system main power source.When electronic equipment is during in stages such as storage, transportations, stand-by power supply is set and disconnects, extend the life-span of stand-by power supply, guarantee electronic equipment fail safe.In the time that electronic equipment normally uses; stand-by power supply access is set; in the time that main power source surprisingly lost efficacy, stand-by power supply can be protected main system volatile memory contents, records possible fault data, points out fault type, maintain the even all normal operations of system of instrument and equipment part.
Although microcontroller is worked for a long time under stand-by power supply power supply, this chip less than 1 μ A power consumption is inappreciable for the stand-by power supply that conventionally exceedes 1Ah.
The utility model can also combine at least one and embodiment 1 in technical characterictic described in embodiment 2,3, forms new execution mode.
It should be noted that above-described embodiment is only preferred embodiment of the present utility model; be not used for limiting protection range of the present utility model; being equal to replacement or substituting of having done on the basis of the above all belongs to protection range of the present utility model, and protection range of the present utility model is as the criterion with claims.
Claims (3)
1. an electronic equipment stand-by power supply, it is characterized in that, described stand-by power supply comprises stand-by power supply output, electronic equipment accessory power supply input, between described stand-by power supply output and electronic equipment accessory power supply input, be provided with semiconductor switch device, described semiconductor switch device is also connected with micro-power consumption control device, described micro-power consumption microcontroller is powered by stand-by power supply, utilize its communication interface to receive the control command of electronic equipment main system, micro-power consumption microcontroller is stored in the control command receiving in the nonvolatile memory on its sheet, and according to conducting or the cut-off of control command control semiconductor switch device, thereby control access or the disconnection of stand-by power supply.
2. electronic equipment stand-by power supply according to claim 1, is characterized in that, described micro-power consumption microcontroller is set to PIC12LF1822.
3. electronic equipment stand-by power supply according to claim 1 and 2, it is characterized in that, described semiconductor switch device is set to IRLML6402, its source electrode is connected with the output of stand-by power supply, drain electrode is connected with electronic equipment accessory power supply input, and grid is connected with micro-power consumption microprocessor controls output pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881073.7U CN203674792U (en) | 2013-12-30 | 2013-12-30 | Standby power supply for electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320881073.7U CN203674792U (en) | 2013-12-30 | 2013-12-30 | Standby power supply for electronic apparatus |
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| CN203674792U true CN203674792U (en) | 2014-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872756A (en) * | 2013-12-30 | 2014-06-18 | 南京英马电力自动化设备有限公司 | Standby power supply for electronic instrument equipment and control method of standby power supply |
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2013
- 2013-12-30 CN CN201320881073.7U patent/CN203674792U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872756A (en) * | 2013-12-30 | 2014-06-18 | 南京英马电力自动化设备有限公司 | Standby power supply for electronic instrument equipment and control method of standby power supply |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20191230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |