CN100346267C - Electric power management system and method for electronic equipment - Google Patents
Electric power management system and method for electronic equipment Download PDFInfo
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- CN100346267C CN100346267C CNB2004100088362A CN200410008836A CN100346267C CN 100346267 C CN100346267 C CN 100346267C CN B2004100088362 A CNB2004100088362 A CN B2004100088362A CN 200410008836 A CN200410008836 A CN 200410008836A CN 100346267 C CN100346267 C CN 100346267C
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Abstract
The present invention discloses a power supply management system for an electronic device, which comprises a power supply management unit and one or more than one module-level power supply unit, wherein one module-level power supply unit is connected between a function module and a power supply circuit of the function module in series; the power management unit controls whether the module-level power supply unit supplies electricity to the function module connected with the module-level power supply unit or not. The present invention simultaneously discloses a power supply management method for the electronic device. According to the realized function, the electronic device is set into a plurality of function modules in advance. One module-level power supply unit is added on a power supply circuit of each function module. According to the currently performed function of the electronic device, an on-off control signal is sent to the module-level power supply unit which is connected with the selected function module. According to the on-off control signal, the present invention controls whether the module-level power supply unit supplies the electricity to the function module connected with the module-level power supply unit or not. The present invention realizes the fine management of the power supply, and the system circuit is simple.
Description
Technical field
The present invention relates to the power supply technique of electronic equipment, particularly a kind of power-supply management system of electronic equipment and method.
Background technology
Along with the widespread use of digital technology, panoramic electronic product emerges in an endless stream, and is an important and indispensable technical task for power electronic equipment how.Particularly for main battery-powered electronic product, as little electronic products such as portable electronic devices, because they use powered battery, the time of its use is to decide the battery-powered time.In order to prolong the service time of equipment, strengthen the consumption feature of product, must do precise management to power supply.In addition, because every kind of battery all has its serviceable life, can do the serviceable life that fine-grained management helps to prolong battery to power supply, and then reduce cost.
In brief, the purpose of power management will be saved power supply exactly.The power management scheme that adopts roughly is divided into two kinds at present:
A kind of is only battery to be done management.Referring to Fig. 1, Fig. 1 is the structure and the theory diagram of prior art battery management.Wherein, comparer 102 does not stop to detect the voltage (being designated as V1) of battery 101 outputs, then its and predetermined threshold value (V0) is compared, if V1＜V0, then thinks the cell voltage deficiency, and gauge tap 103 is closed the power supply to system 104 at this moment.This method is cured the symptoms, not the disease, and the problem that does not have consideration how to save power supply can only be called battery management.
Another is to finish the power management of system by increasing complicated circuit.Referring to Fig. 2, Fig. 2 is the structure and the theory diagram of prior art power management.This method is at primary processor 201 and need coprocessor 202 of 205 increases of peripherals of power supply to be responsible for power management specially, and this coprocessor 202 manages by the power supply of monitoring condition setting module 203 and 204 pairs of peripherals 205 of supervisory circuit.The power supply status of 204 pairs of peripherals 205 of a supervisory circuit is monitored.That is to say that it can do power management respectively to each peripherals 205 of system, when certain peripherals 205 of system does not use, then closes its power supply, otherwise opens power supply.In the power management process, coprocessor 202 also needs in real time and primary processor 201 exchange messages, makes primary processor 201 in time know the electric power thus supplied and the power supply status of peripherals 205.The design of this method is complicated, needs more system resources, and power supply that can only control peripheral devices, can't carry out power supply management to thinner functional module, therefore can not realize the precise management of powering.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of power-supply management system of electronic equipment, and this system can realize the fine-grained management of power supply.
Another object of the present invention is to provide a kind of method for managing power supply of electronic equipment, and this method is improved one's methods simply to the circuit of equipment, can realize the fine-grained management of power supply.
Be an aspect that achieves the above object, the invention provides a kind of power-supply management system of electronic equipment, it is used to manage the power-supply system of the electronic equipment that comprises main processing block, one or more functional modules and power module, and this power-supply management system comprises power management processing unit, one or more module level power supply units;
Module level power supply unit is connected in functional module of electronic equipment and power module between the feed circuit that this functional module provides;
Described power management processing unit according to the function that electronic equipment is carried out, need to select the functional module of power supply, and the information that selected functional module need be powered or cut off the power supply is sent to the primary processor of main processing block;
The primary processor of described main processing block receives the information that selected functional module need be powered or cut off the power supply, and according to this information, to linked to each other by each selection function module to each module level power supply unit transmit button control signal;
Whether the module level power supply unit receives the switch controlling signal that the primary processor of main processing block sends, and be that the functional module that is connected with the module level power supply unit is powered according to this signal controlling.
Wherein, described power management processing unit can be arranged in the main processing block.
Described module level power supply unit can be realized by the voltage transitions chip, its power supply line with functional module disconnects, the input and output of this voltage transitions chip link to each other with the two ends that the power supply line of functional module disconnects respectively, and the Enable Pin of this voltage transitions chip receives the switch controlling signal of the primary processor transmission of main processing block.
This power-supply management system can further comprise the main electricity control module, and it links to each other with the multiple power circuit that provides of power module in the electronic equipment, carries out power circuit and switches, and the power circuit after control is switched is the whole electric equipment power supply.
Described multiple power circuit can comprise: main battery power circuit, reserve battery power circuit and extraneous power interface circuit.
Be another aspect that achieves the above object, the invention provides a kind of method for managing power supply of electronic equipment, this method may further comprise the steps:
1) function that in advance the electronic equipment basis can be realized is set to a plurality of functional modules; And be to increase a module level power supply unit on the feed circuit of each functional module; When electronic equipment started, the module level power supply unit of each functional module was defaulted as the functional module power supply;
2) after electronic equipment started, main processing block need to select the functional module of power supply or outage according to the function of the current execution of electronic equipment, and to the module level power supply unit transmit button control signal that links to each other with selecteed functional module;
3) the module level power supply unit is according to the switch controlling signal of main processing block transmission, and whether control is the functional module power supply that links to each other with this module level power supply unit.
Wherein, step 2) method of the described selection functional module that need power or cut off the power supply can for: set in advance multiple functional mode, and write down the duty of each functional module under every kind of functional mode; According to the duty of each functional module under the current functional mode, select the power supply state of the power supply or the outage of each functional module.
The process of the power supply of described each functional module of selection or the power supply state of outage can comprise:
21) analyze the duty of each functional module under the current functional mode;
22) select a functional module, judge whether it is normal operating conditions, if then this functional module is a power supply state, direct execution in step 24), otherwise execution in step 23);
23) judge whether this functional module is suspended state, if then this functional module is a power supply state; Otherwise this functional module is an off-position;
24) judge whether not have selecteed functional module in addition,, then return step 22 if having), otherwise return step 21).
Described step 23) may further include: when functional module is suspended state, judge that whether this functional module hang-up is because electronic equipment electric weight deficiency causes that if then this functional module is an off-position, otherwise this functional module is a power supply state.
Step 2) method of the described selection functional module that need power or cut off the power supply can for: set in advance the power management interface, on this interface, directly select the power supply of each functional module or the power supply state of outage by the user.
This method may further include: on total feed circuit that power module provides in electronic equipment the main electricity control module is set, it switches the multiple power circuit that power module in the electronic equipment provides, and is the whole electric equipment power supply by the power circuit after switching.
As seen from the above technical solutions, the power-supply management system of this electronic equipment of the present invention and method, electronic equipment according to the function that can realize, is set to a plurality of functional modules, and be module level power supply unit of increase on the feed circuit of each functional module; After electronic equipment starts, according to the function of the current execution of electronic equipment, need to select the functional module of power supply or outage, whether be coupled functional module power supply by the control of module level power supply unit.Because whether the present invention can power to specific functional modules and control, therefore realized the fine-grained management of power supply, circuit system is compared with prior art simple relatively.
Description of drawings
Fig. 1 is the structure and the theory diagram of prior art battery management;
Fig. 2 is the structure and the theory diagram of prior art power management;
Fig. 3 is the structured flowchart of a preferred embodiment of the present invention power-supply management system;
Fig. 4 is the theory diagram of middle main electricity control module embodiment illustrated in fig. 3;
Fig. 5 is the circuit theory diagrams of middle main electricity control module embodiment illustrated in fig. 4;
Fig. 6 is the theory diagram of middle module level power supply unit embodiment illustrated in fig. 3;
Fig. 7 is the circuit theory diagrams of module level power supply unit shown in Figure 6;
Fig. 8 carries out the process flow diagram of power management for power-supply management system embodiment illustrated in fig. 3.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The power-supply management system of this electronic equipment of the present invention and method, earlier with electronic equipment according to the function that can realize, be set to a plurality of functional modules, and be module level power supply unit of increase on the feed circuit of each functional module; After electronic equipment starts, according to the function of the current execution of electronic equipment, need to select the functional module of power supply or outage, whether be that coupled functional module is powered and realized fine-grained management to electronic equipment power source by the control of module level power supply unit.
Referring to Fig. 3, Fig. 3 is the structured flowchart of a preferred embodiment of the present invention power-supply management system.Present embodiment is integrated to have used power-supply management system of the present invention in the portable electronic device of functions such as video, audio frequency, books, recreation, TV output a kind of.As shown in Figure 3, this media player is provided with hard disk (HDD) module 302, TV output (TV OUT) module 303, USB module 304, display module 305, line traffic control module 307, key-press module 308, remote control module 309 according to the function that can realize.In order to realize power management, in this media player of present embodiment, the power management processing unit 301 in the main processing block 300 that increased the main electricity control module 311 that has been arranged on total feed circuit, is arranged on media player and be connected in 7 module level power supply units 306 between the feed circuit of 7 functional modules and this functional module respectively.
Wherein, main electricity control module 311 links to each other with the power module 310 of media player, the multiple power circuit in the power module 310 is switched, and be the whole electric equipment power supply by the power circuit after switching.
Power management processing unit 301 according to the function that electronic equipment is carried out, need to select the functional module of power supply, and the information that selected functional module need be powered or cut off the power supply is sent to the primary processor of main processing block 300.
The primary processor of main processing block 300 receives the information that selected functional module need be powered or cut off the power supply, and according to this information, to linked to each other by each selection function module to each module level power supply unit 306 transmit button control signal.
Whether module level power supply unit 306 receives the switch controlling signal that the primary processor of main processing blocks 300 sends, and be that the functional module that is connected with the module level power supply unit is powered according to this signal controlling.
Main electricity control module 311 is important steps of power management, the quality of its performance is related to the life-span of battery and the degree of stability of system, the main electricity control module that at present a lot of portable electric appts all have the multiple power circuit of pair power module to switch, the main electricity control module principle of work in the present embodiment is same as the prior art.
Referring to Fig. 4, Fig. 4 is the theory diagram of middle main electricity control module embodiment illustrated in fig. 3.The switching of different power supplies is mainly finished in this unit, when external power supply plug 411 was received on the external power receptacle, power-supply controller of electric 415 detected this state, cut off the power supply of equipment main battery 413, start battery charge loop 412 simultaneously, utilize external power supply 413 chargings of equipment main battery.Under no external power supply state, if the main system of media player 420 by data line, perhaps voltage sample detects equipment main battery 413 undertensions, this moment, the starting outfit reserve battery 414, main system 420 is to user's information that gives a warning simultaneously.
In the practical wiring, power-supply controller of electric 415 that the power management chip of many producers is all integrated among Fig. 4 and charge function and the logical relation during power supply between them.The user only needs the interface of careful this unit of design and primary processor to get final product behind selected good this chip.
Referring to Fig. 5, Fig. 5 is the circuit theory diagrams of middle main electricity control module embodiment illustrated in fig. 4.It comprises that the external power interface circuit is that external power supply joint 501, battery charger 502, equipment main battery 503, equipment sparing battery 504, voltage conversion circuit 505, rectification circuit 506, voltage ratio are than switch 507.
Present embodiment to the method that equipment main battery 503 charges is: adopt the BQ24022 chip to realize battery charger 502, it has external power supply and the automatic recognition function of main battery, when plugging external power supply, can extract power supply energy from external power supply automatically, to the main battery charging, this chip is supported USB and two kinds of current charges patterns of AC simultaneously.Because the BQ24022 chip can be exported the electric current up to 1A, has satisfied the use of most of portable sets substantially.
The method that the active and standby battery of present embodiment equipment switches is: measuring voltage VMBAT of main battery 503 outputs arrives voltage ratio than switch 507, voltage ratio compares measuring voltage of receiving and the rated voltage that sets in advance than switch 507, if it is littler than rated voltage, then equipment sparing battery 504 output currents are power devices, otherwise equipment sparing battery 504 is not a power devices.The power supply of equipment sparing battery 504 outputs is exported a constant supply voltage earlier through voltage conversion circuit 505, and this supply voltage carries out the specified electric current of rectification output through rectification circuit 506 again, outputs to main system by voltage ratio than switch 507.
The principle of module level power supply unit 306 is referring to Fig. 6 among Fig. 3, and as shown in Figure 6, the module level power supply is equivalent to on-off circuit, and whether the electric energy that its control signal of sending according to primary processor is controlled from main electricity is coupled functional module power supply.
The circuit theory of present embodiment module level power supply unit 306 is referring to Fig. 7, and as shown in Figure 7, the module level power supply unit can adopt the TPS62000 chip to realize, this chip is a kind of voltage transitions chip, can realize switching function by Enable Pin EN.The TPS62000 chip disconnects the power supply line of functional module, and the input and output of this chip link to each other with the two ends that the power supply line of functional module disconnects respectively, and the Enable Pin of this voltage transitions chip receives the switch controlling signal that primary processor sends.The maximum current that the TPS62000 chip can be exported reaches 600mA, can satisfy the use of each functional module of portable set substantially.In addition, when pin EN when low, chip quits work, this moment, the power consumption of chip self was extremely low.
Primary processor can be made up of the CPU with XSCALE, ARM framework in the portable electronic device of present embodiment, and the operating system that runs on this equipment can be embedded systems such as Palm, PPC, WinCe, PMC.
Present embodiment set in advance multiple functional mode for media player in advance, and write down the duty of each functional module under every kind of functional mode.At 7 functional modules of present embodiment, set out following 10 kinds of mode of operations:
Functional mode A: park mode
Functional mode B: see video (not watching) by TV
Functional mode C: listen to the music (without line traffic control)
Functional mode D: listen to the music (plugging line traffic control)
Functional mode E: play games (not passing through TV)
Functional mode F: see books (not passing through TV)
Functional mode G: be connected file in download with PC by USB
Functional mode H: see video by TV
Functional mode I: play games (passing through TV)
Functional mode J: see books (passing through TV)
The duty of each functional module is referring to table one under above-mentioned 10 kinds of functional modes, and table one is functional mode and functional module duty corresponding tables.
| Functional mode | HDD | TVOUT | USB | Line traffic control | Show | Remote control | Button |
| A | Hang up | Do not work | Hang up | Hang up | Do not work | Do not work | Hang up |
| B | Work | Do not work | Hang up | Do not work | Work | Do not work | Work |
| C | Work | Do not work | Hang up | Do not work | Do not work | Do not work | Work |
| D | Work | Do not work | Hang up | Work | Do not work | Do not work | Work |
| E | Work | Do not work | Hang up | Do not work | Work | Do not work | Work |
| F | Work | Do not work | Hang up | Do not work | Work | Do not work | Work |
| G | Work | Do not work | Work | Do not work | Work | Do not work | Work |
| H | Work | Work | Hang up | Do not work | Do not work | Work | Do not work |
| I | Work | Work | Hang up | Do not work | Do not work | Work | Do not work |
| J | Work | Work | Hang up | Do not work | Do not work | Work | Do not work |
Table one
When media player started, the module level power supply unit of each functional module was defaulted as the functional module power supply, after media player starts, by the control carrying out of the power management processing unit in main processing block power management.Referring to Fig. 8, Fig. 8 carries out the process flow diagram of power management for power-supply management system embodiment illustrated in fig. 3.Media player starts the back and carries out this flow process.It may further comprise the steps this flow process:
Step 802 is selected a functional module.
Step 803 judges whether it is normal operating conditions, if then execution in step 804, otherwise execution in step 805.
Step 805 judges whether this functional module is suspended state, if then execution in step 806, otherwise execution in step 808.
Step 806 judges that whether this functional module hang-up is because electronic equipment electric weight deficiency causes that if then execution in step 808, otherwise execution in step carries out 807.
Step 809 judges whether not have selecteed functional module in addition, if having, then returns step 802, otherwise returns step 801.
For example current functional mode is functional mode I: play games (passing through TV), just data such as image are outputed on the TV by TV OUT module, play games by operation to TV.Under this pattern, the result that Power Management Unit is analyzed as shown in Table 2.
| HDD | TVOUT | USB | Line traffic control | Show | Remote control | Button |
| Work | Work | Hang up | Do not work | Do not work | Work | Do not work |
Table two
Like this, main processing block sends the control signal of power cutoff to four module level power supply units that link to each other with line traffic control module, display module, key-press module.After four module level power supply units are received this control signal, stop to be these four functional module power supplies.
Present embodiment realizes that in portable electronic device power-supply management system of the present invention and method are suitable equally for portable sets such as PDA, MP3, MD.
In addition, present embodiment can also set in advance the power management interface, behind the power supply state of the power supply of directly selecting each functional module on this interface or outage, main processing block sends power supply or disconnected control signal to the module level power supply unit that links to each other with this functional module by the user.
By the above embodiments as seen, the power-supply management system of this electronic equipment of the present invention and method, really realized fine-grained management to the portable set power supply, and system's useless power consumption is very low, improved the service efficiency of power supply energy, reduce the charging times of system battery simultaneously, improved the serviceable life of battery, reduced cost.
Claims (11)
1, a kind of power-supply management system of electronic equipment, the power-supply system that it is used to manage the electronic equipment that comprises main processing block, one or more functional modules and power module is characterized in that: this power-supply management system comprises power management processing unit, one or more module level power supply units;
Module level power supply unit is connected in functional module of electronic equipment and power module between the feed circuit that this functional module provides;
Described power management processing unit according to the function that electronic equipment is carried out, need to select the functional module of power supply, and the information that selected functional module need be powered or cut off the power supply is sent to the primary processor of main processing block;
The primary processor of described main processing block receives the information that selected functional module need be powered or cut off the power supply, and according to this information, to linked to each other by each selection function module to each module level power supply unit transmit button control signal;
Whether the module level power supply unit receives the switch controlling signal that the primary processor of main processing block sends, and be that the functional module that is connected with the module level power supply unit is powered according to this signal controlling.
2, power-supply management system as claimed in claim 1 is characterized in that: described power management processing unit is arranged in the main processing block.
3, power-supply management system as claimed in claim 1, it is characterized in that: described module level power supply unit is realized by the voltage transitions chip, its power supply line with functional module disconnects, the input and output of this voltage transitions chip link to each other with the two ends that the power supply line of functional module disconnects respectively, and the Enable Pin of this voltage transitions chip receives the switch controlling signal of the primary processor transmission of main processing block.
4, power-supply management system as claimed in claim 1, it is characterized in that: this power-supply management system further comprises the main electricity control module, it links to each other with the multiple power circuit that provides of power module in the electronic equipment, carry out power circuit and switch, the power circuit after control is switched is the whole electric equipment power supply.
5, power-supply management system as claimed in claim 4 is characterized in that: described multiple power circuit comprises: main battery power circuit, reserve battery power circuit and extraneous power interface circuit.
6, a kind of method for managing power supply of electronic equipment is characterized in that, this method may further comprise the steps:
1) function that in advance the electronic equipment basis can be realized is set to a plurality of functional modules; And be to increase a module level power supply unit on the feed circuit of each functional module; When electronic equipment started, the module level power supply unit of each functional module was defaulted as the functional module power supply;
2) after electronic equipment started, main processing block need to select the functional module of power supply or outage according to the function of the current execution of electronic equipment, and to the module level power supply unit transmit button control signal that links to each other with selecteed functional module;
3) the module level power supply unit is according to the switch controlling signal of main processing block transmission, and whether control is the functional module power supply that links to each other with this module level power supply unit.
7, method as claimed in claim 6 is characterized in that step 2) method of the described selection functional module that need power or cut off the power supply is: sets in advance multiple functional mode, and writes down the duty of each functional module under every kind of functional mode; According to the duty of each functional module under the current functional mode, select the power supply state of the power supply or the outage of each functional module.
8, method as claimed in claim 7 is characterized in that, the process of the power supply of described each functional module of selection or the power supply state of outage comprises:
21) analyze the duty of each functional module under the current functional mode;
22) select a functional module, judge whether it is normal operating conditions, if then this functional module is a power supply state, direct execution in step 24), otherwise execution in step 23);
23) judge whether this functional module is suspended state, if then this functional module is a power supply state; Otherwise this functional module is an off-position;
24) judge whether not have selecteed functional module in addition,, then return step 22 if having), otherwise return step 21).
9, method as claimed in claim 8, it is characterized in that, described step 23) further comprises: when functional module is suspended state, judge whether this functional module hang-up causes because of electronic equipment electric weight deficiency, if, then this functional module is an off-position, otherwise this functional module is a power supply state.
10, method as claimed in claim 6, it is characterized in that, step 2) method of the described selection functional module that need power or cut off the power supply is: set in advance the power management interface, directly select the power supply of each functional module or the power supply state of outage by the user on this interface.
11, method as claimed in claim 6, it is characterized in that, this method further comprises: on total feed circuit that power module provides in electronic equipment the main electricity control module is set, it switches the multiple power circuit that power module in the electronic equipment provides, and is the whole electric equipment power supply by the power circuit after switching.
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| JP2003114744A (en) * | 2001-10-04 | 2003-04-18 | Toshiba Corp | Information processor, and method of saving electric power applied to the processor |
| US6552445B1 (en) * | 1999-08-26 | 2003-04-22 | Fujitsu Limited | Electronic apparatus and circuit board |
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2004
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| CN1161093A (en) * | 1994-10-19 | 1997-10-01 | 美国3M公司 | Power conservation device for a peripheral interface module |
| CN1367889A (en) * | 1999-08-03 | 2002-09-04 | 布泰克公司 | Serial bus communications system |
| US6552445B1 (en) * | 1999-08-26 | 2003-04-22 | Fujitsu Limited | Electronic apparatus and circuit board |
| JP2002108489A (en) * | 2000-10-02 | 2002-04-10 | Hitachi Ltd | Data processor |
| JP2003114744A (en) * | 2001-10-04 | 2003-04-18 | Toshiba Corp | Information processor, and method of saving electric power applied to the processor |
| CN1466031A (en) * | 2002-06-03 | 2004-01-07 | 联想(北京)有限公司 | Controllable power supply supporting power supply in switch off state |
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| 电路与系统学报 何乐年 王云峰 严晓浪，19.22 2003 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1673913A (en) | 2005-09-28 |
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