CN102609068A - Computer system power management control method and device based on solar energy - Google Patents
Computer system power management control method and device based on solar energy Download PDFInfo
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Abstract
The invention discloses a computer system power management control method and device based on solar energy. The method comprises detecting the current solar-energy-based input voltage of a voltage regulator of a computer system; determining whether the input voltage is lower than a set voltage value; reducing the current load level of a processor of the computer system stepwise until the input voltage reaches the lowest load level of the processor if the current input voltage is lower than the set voltage value, controlling the processor to enter dormant state and stopping the control period; determining whether the processor reaches the largest load level if the input voltage is not larger than the set voltage value; and stopping the control period if the processor reaches the largest load level, otherwise, increasing the current load level of the processor stepwise until the input voltage is lower than the set voltage value, reducing the current load level by one level, and stopping the control period. According to the invention, the method can automatically dynamically regulate the load performance of the computer according to the solar energy supply condition.
Description
Technical field
The present invention relates to a kind of power management control technology, relate in particular to a kind of power management control method and device of the computer system based on sun power.
Background technology
Utilize the equipment of sun power a lot of at present, like solar street light, solar water heater etc., these use the equipment of sun power all need use device for managing and controlling electrical source; With sun energy circuit lamp control device is example; The essential characteristic of this control device is: at civil power, accumulator dynamically switches between three power supplys of sun power; The electric energy of load comes from civil power or accumulator (12V or 24V usually); When the accumulator output voltage was lower than preset threshold voltage, being connected of control device cut-out and accumulator converted to by the civil power powering load; If have under the situation of sunlight, sun power directly charges a battery.
We know that the output of solar panel is non-linear, under fixing solar irradiation, a maximum power point (mpp) are arranged, and for reaching this optimal working point, the voltage-current characteristic of load all need must be joined with solar panel.In addition, because solar irradiation itself changes in time, the peak power output valve that solar panels are corresponding also can change.Yet, can see that by above existing this type general solar control device possesses the ability of storage of electrical energy and Switching power, but not possess the ability of control and regulating load.Here said the ability of regulating load " control with " refers to through the setting that changes load self and makes its demand to electric energy change (performance of load meanwhile is variation thereupon naturally also).For example " tunable optical desk lamp ", its power consumption can be passed through the knob manual adjustments, and the brightness of desk lamp also changes thereupon.
Along with development of science and technology; Computer system based on sun power has become a kind of development trend, still, because the characteristic of computer load is equipped with according to exposed installation and household electrical appliance want complicated many; Its power consumption is that quick real-time changes along with the difference of working procedure on it; It can not realize manual shift, if directly be connected computer load with solar panels, just can't guarantee under any computer operation condition, can both mate the peak power output of solar panels; And can maximize efficiency; Then directly have influence on the actual performance of computing machine, for this reason, how according to the supply situation of sun power and the load performance of adjusting computing machine automatically is the technical matters that needs to be resolved hurrily at present.
Summary of the invention
The object of the present invention is to provide a kind of power management control method and device of the computer system based on sun power, with the load performance of realizing adjusting automatically computing machine and maximization according to the supply situation of sun power to solar energy utilization rate.
For achieving the above object, one aspect of the present invention provides a kind of power management control method of the computer system based on sun power, may further comprise the steps:
The input voltage that the regulating and controlling voltage device of detection computations machine system is current from sun power;
Judge whether said input voltage is lower than voltage setting value;
If be lower than said voltage setting value; Then reduce the present load grade of the processor of said computer system step by step; When said input voltage reaches the minimum load grade of said processor, just control said processor and get into dormant state, finish this control cycle then;
If be not less than said voltage setting value, judge then whether said processor reaches the maximum load grade; If reach said maximum load grade, then finish this control cycle, otherwise; Raise the step by step present load grade of said processor is lower than said voltage setting value until said input voltage, at this moment; Reduce the present load grade of the said processor of one-level, finish this control cycle then.
The power management control method of the computer system based on sun power of the present invention when said input voltage is not less than said voltage setting value, before judging whether said processor reaches the maximum load grade, also comprises:
Detect and write down the current input current of said regulating and controlling voltage device from sun power.
The power management control method of the computer system based on sun power of the present invention, the present load grade of the said said processor that raises step by step is lower than said voltage setting value until said input voltage, is specially:
When said processor does not reach said maximum load grade; The present load grade of the said processor of rising one-level after postponing setting-up time, detects the input voltage after the current rising one-level of said regulating and controlling voltage device; When if the input voltage after the current rising one-level of said regulating and controlling voltage device is not less than said voltage setting value; Then raise the again present load grade of the said processor of one-level, and behind the said setting-up time of time-delay, detect the current input voltage of said regulating and controlling voltage device once more; So circulation is lower than said voltage setting value until said input voltage.
The power management control method of the computer system based on sun power of the present invention, said voltage setting value is 95% of a voltage rating.
The power management control method of the computer system based on sun power of the present invention, said time value set is 100 milliseconds.
Again on the one hand, the present invention also provides a kind of device for managing and controlling electrical source of the computer system based on sun power, comprising:
Voltage measurement unit, it is used for the current input voltage from sun power of regulating and controlling voltage device of detection computations machine system;
Microcontroller is used to judge whether the input voltage that said voltage measurement unit collects is lower than voltage setting value; If be lower than said voltage setting value; Then reduce the present load grade of the processor of said computer system step by step; When said input voltage reaches the minimum load grade of said processor, just control said processor and get into dormant state, finish this control cycle; If be not less than said voltage setting value, judge then whether said processor reaches the maximum load grade; If reach said maximum load grade, then finish this control cycle, otherwise; Raise the step by step present load grade of said processor is lower than said voltage setting value until said input voltage, at this moment; Reduce the present load grade of the said processor of one-level, finish this control cycle then.
The device for managing and controlling electrical source of the computer system based on sun power of the present invention also comprises:
Current sampling unit is used to detect the current input current from sun power of said regulating and controlling voltage device, and converts thereof into corresponding voltage signal;
The serial AD conversion unit is used for the voltage signal that said current sampling unit sampling obtains is transformed into corresponding digital voltage signal, and sends it to said microcontroller preservation.
The device for managing and controlling electrical source of the computer system based on sun power of the present invention, after the present load grade of the said processor of every rising one-level, said voltage measurement unit detects after will postponing 100 milliseconds again.
The device for managing and controlling electrical source of the computer system based on sun power of the present invention, said voltage setting value is 95% of a voltage rating.
The power management control method of the computer system based on sun power of the present invention, the at first current input voltage of the regulating and controlling voltage device of detection computations machine system from sun power; Judge then whether input voltage is lower than voltage setting value; If be lower than voltage setting value, then reduce the present load grade of the processor of this computer system step by step, when input voltage reached the minimum load grade of processor, just processor controls got into dormant state, finishes this control cycle then; If be not less than voltage setting value, then whether decision processor reaches the maximum load grade; If reach the maximum load grade, then finish this control cycle, otherwise; The present load grade of processor step by step raises; Be lower than voltage setting value until input voltage, at this moment, reduce the present load grade of a level processor; Finish this control cycle then, thereby realized according to the supply situation of sun power and the load performance of automatic dynamic adjustment computing machine.
Description of drawings
Fig. 1 is the process flow diagram based on the power management control method of the computer system of sun power of one embodiment of the invention;
Fig. 2 is the circuit theory diagrams based on the device for managing and controlling electrical source of the computer system of sun power of one embodiment of the invention.
Embodiment
Be described in detail below in conjunction with the accompanying drawing specific embodiments of the invention:
The device for managing and controlling electrical source based on the computer system of sun power of present embodiment mainly comprises voltage measurement unit, is used for the current input voltage from sun power of regulating and controlling voltage device of detection computations machine system; Current sampling unit is used to detect the current input current from sun power of regulating and controlling voltage device, and converts thereof into corresponding voltage signal; The serial AD conversion unit is used for the voltage signal that the current sampling unit sampling obtains is transformed into corresponding digital voltage signal, and sends it to the microcontroller preservation; And microcontroller, be used to judge whether the input voltage that voltage measurement unit collects is lower than voltage setting value; If be lower than voltage setting value, then reduce the present load grade of the processor of computer system step by step, when input voltage reached the minimum load grade of processor, just processor controls got into dormant state, finishes this control cycle; If be not less than voltage setting value, then whether decision processor reaches the maximum load grade; If reach the maximum load grade, then finish this control cycle, otherwise the present load grade of the processor that raises step by step is lower than voltage setting value until input voltage, at this moment, reduce the present load grade of a level processor, finish this control cycle then.It is thus clear that; The device for managing and controlling electrical source based on the computer system of sun power of present embodiment needs regulating and controlling voltage device (the Voltage Regulation Module by current Intel company; VRM) realize; We know, the major function of VRM is to convert outer power voltage (civil power/sun power/or other any power sources) to fixing voltage that the processor that can supply computing machine utilizes.The needed voltage of the work of processor is provided by VRM, and VRM receives the control of processor simultaneously again.
In conjunction with shown in Figure 2, in this device, microcontroller comprises that model is PIC single-chip microcomputer and the peripheral circuit thereof of PIC12F50, and the employing of serial AD conversion unit is that model is the serial modulus conversion chip of TLC54x; Voltage measurement unit is that voltage measurement chip and the filter capacitor C1 of TC51 constitutes by model; The 1st pin of this voltage measurement chip links to each other with the RB4 terminal of PIC single-chip microcomputer, the 3rd pin of this voltage measurement chip link to each other with the regulating and controlling voltage device input end of computer system (input end of regulating and controlling voltage device receives the feed output from sun power); Current sampling unit is made up of operational amplifier and resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 5; Resistance R 5 is serially connected with on the input end of regulating and controlling voltage device; The two ends of resistance R 5 link to each other with reverse input end with the input end in the same way of operational amplifier with resistance R 3 correspondences through resistance R 2 respectively; The output terminal of operational amplifier links to each other with the 2nd pin of serial modulus conversion chip; The 5th of serial modulus conversion chip～the 7th pin is corresponding continuous with the RC3～RC5 terminal of PIC single-chip microcomputer respectively, and the RB1 terminal of PIC single-chip microcomputer, RB2 terminal, RC0 terminal, RC1 terminal and RC2 terminal link to each other with the processor of computer system, constitute 5 power management buses.
In conjunction with shown in Figure 1, the logic control flow process of the device for managing and controlling electrical source of above-mentioned computer system based on sun power is following:
Step S101, under the conventional standby, the input voltage that the regulating and controlling voltage device of voltage measurement chip detection computer system is current from sun power.
Step S102, PIC single-chip microcomputer judge whether input voltage is lower than 95% (be a voltage setting value, this voltage setting value also can be according to the actual conditions accommodation) of rated voltage, if execution in step S103 then, otherwise execution in step S106.
Step S103; When supply voltage begins to descend and is lower than predetermined threshold value (95% rated voltage), explain that then processor load is bigger than normal, sun power can't provide enough electric energy; System will trigger the dynamic tracking state that gets into; So the PIC single-chip microcomputer further judges this input voltage and whether reaches the minimum load grade of processor, if execution in step S104 then, otherwise execution in step S105.Here need to prove that so-called minimum load grade is that processor is in critical grade in closed condition, corresponding; Corresponding its high capacity grade of the maximum power dissipation of processor (promptly at full capacity maximum service rating); Between high capacity grade and minimum load grade, can set the grade of load of several gradients as required, for example, support the Pentium processor of Enhanced IntelSpeedStep Technology under 6 different voltages with different states, to work; Promptly corresponding 1 to 6 grade of grade of load; It is thus clear that present embodiment will be discontinuous to the load control of processor, promptly accomplish through the Change of Class of discretize.It should be noted that in addition; Some processors are also supported dynamic overclocking; Can be like the new Intel TurboBoost Technology that releases of Intel company so that support the processor dormancy at any time of this technology or rise to higher frequency; For this type processor, we just can define the grade of load of more discretizes, all corresponding different voltages with different of each grade and frequency of operation.This type accomplished the situation that the grade of load is regulated and control by means of Intel Turbo Boost Technology, only is to define the grade of load again, and it also is a distortion of invention.
Step S104; When this input voltage does not reach the minimum load grade of processor; The PIC single-chip microcomputer is controlled the regulating and controlling voltage device indirectly through processor, makes the present load grade of processor reduce one-level (promptly reducing the WV of processor), the S101 of redirect execution in step then.Wherein, The PIC single-chip microcomputer is output as 5 digital signal; This digital signal of 5 will generate 8 control signals to the regulating and controlling voltage device by processor after being processed device acceptance, these 8 control signals are called as voltage authentication code (Voltage Identification; VID), each different VID will cause the specific magnitude of voltage of regulating and controlling voltage device output.
Step S105, when this input voltage reached the minimum load grade of processor, PIC Single-chip Controlling processor got into dormant state, in case locking system is made mistakes, finishes this control cycle.Wherein, each control cycle is corresponding to a grade of load.
Step S106, when this input voltage be not less than rated voltage 95% the time, the current input current of regulating and controlling voltage device that PIC single-chip microcomputer real time record is detected by current sampling unit from sun power.Why wanting the real time record input current, is for the ease of comparing the fluctuation situation of electric current.Usually computer load is different from electric light or general electronic corporation; Computer load possibly take place than great fluctuation process at any time; If a certain moment PIC single-chip microcomputer is found the input current sudden change, and this sudden change is not because due to the PIC single-chip microcomputer itself, then must be because the fluctuation of load that the process variations of moving on the processor of computing machine causes; At this moment, system just will reduce processor again the grade of load to prevent the generation of system overload.
Step S107, whether PIC single-chip microcomputer decision processor reaches its maximum load grade, if reach then finish this control cycle, otherwise, execution in step S108.
Step S108; When this input voltage is not less than 95% of rated voltage, and processor is not when reaching the maximum load grade, then explanation; Because electric energy is supplied with and the variation of computer load; Not at the maximum power point of sun power, in order to make the efficiency of processor approach the maximum input level of sun power most, then the PIC single-chip microcomputer need be with the present load grade rising one-level of processor in system.
Step S109, after grade of load rising one-level, about 100 milliseconds of PIC Single-chip Controlling voltage measurement chip delays.Why after adjustment, will delay time 100 milliseconds, be because the voltage adjustment of processor needs about 100 milliseconds time just can be reflected on the actual power characteristic.
Step S110 delays time after 100 milliseconds, and the voltage measurement chip is the current input voltage from sun power of regulating and controlling voltage device of detection computations machine system once more.
Step S111, PIC single-chip microcomputer judge whether input voltage is lower than 95% of rated voltage, if execution in step S112 then, otherwise redirect execution in step S108.
Step S112, the present load grade of PIC Single-chip Controlling processor reduces one-level, promptly recalls nearest step upgrading adjustment, finishes this control cycle then.Because VRM has certain tolerance limit for the fluctuation of its input voltage, of short duration small-amount undertension (be detected be lower than rated voltage 95%) can be not influential to the processor operate as normal.But this low-voltage shows present load and has surpassed the power supply supply, recalls final step and can guarantee that processor is operated in the most stable voltage status.It should be noted that the concrete voltage setting value (i.e. 95% numerical value) here can need change because of the difference of processor technology.
Above embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (9)
1. the power management control method based on the computer system of sun power is characterized in that, may further comprise the steps:
The input voltage that the regulating and controlling voltage device of detection computations machine system is current from sun power;
Judge whether said input voltage is lower than voltage setting value;
If be lower than said voltage setting value; Then reduce the present load grade of the processor of said computer system step by step; When said input voltage reaches the minimum load grade of said processor, just control said processor and get into dormant state, finish this control cycle then;
If be not less than said voltage setting value, judge then whether said processor reaches the maximum load grade; If reach said maximum load grade, then finish this control cycle, otherwise; Raise the step by step present load grade of said processor is lower than said voltage setting value until said input voltage, at this moment; Reduce the present load grade of the said processor of one-level, finish this control cycle then.
2. the power management control method of the computer system based on sun power according to claim 1 is characterized in that, when said input voltage is not less than said voltage setting value, before judging whether said processor reaches the maximum load grade, also comprises:
Detect and write down the current input current of said regulating and controlling voltage device from sun power.
3. the power management control method of the computer system based on sun power according to claim 1 is characterized in that the present load grade of the said said processor that raises step by step is lower than said voltage setting value until said input voltage, is specially:
When said processor does not reach said maximum load grade; The present load grade of the said processor of rising one-level after postponing setting-up time, detects the input voltage after the current rising one-level of said regulating and controlling voltage device; When if the input voltage after the current rising one-level of said regulating and controlling voltage device is not less than said voltage setting value; Then raise the again present load grade of the said processor of one-level, and behind the said setting-up time of time-delay, detect the current input voltage of said regulating and controlling voltage device once more; So circulation is lower than said voltage setting value until said input voltage.
4. the power management control method of the computer system based on sun power according to claim 1 is characterized in that said voltage setting value is 95% of a voltage rating.
5. the power management control method of the computer system based on sun power according to claim 3 is characterized in that said time value set is 100 milliseconds.
6. the device for managing and controlling electrical source based on the computer system of sun power is characterized in that, comprising:
Voltage measurement unit, it is used for the current input voltage from sun power of regulating and controlling voltage device of detection computations machine system;
Microcontroller is used to judge whether the input voltage that said voltage measurement unit collects is lower than voltage setting value; If be lower than said voltage setting value; Then reduce the present load grade of the processor of said computer system step by step; When said input voltage reaches the minimum load grade of said processor, just control said processor and get into dormant state, finish this control cycle; If be not less than said voltage setting value, judge then whether said processor reaches the maximum load grade; If reach said maximum load grade, then finish this control cycle, otherwise; Raise the step by step present load grade of said processor is lower than said voltage setting value until said input voltage, at this moment; Reduce the present load grade of the said processor of one-level, finish this control cycle then.
7. the device for managing and controlling electrical source of the computer system based on sun power according to claim 6 is characterized in that, also comprises:
Current sampling unit is used to detect the current input current from sun power of said regulating and controlling voltage device, and converts thereof into corresponding voltage signal;
The serial AD conversion unit is used for the voltage signal that said current sampling unit sampling obtains is transformed into corresponding digital voltage signal, and sends it to said microcontroller preservation.
8. the device for managing and controlling electrical source of the computer system based on sun power according to claim 7 is characterized in that after the present load grade of the said processor of every rising one-level, said voltage measurement unit detects after will postponing 100 milliseconds again.
9. the device for managing and controlling electrical source of the computer system based on sun power according to claim 8 is characterized in that said voltage setting value is 95% of a voltage rating.
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Cited By (1)
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| CN102609068B (en) | 2016-04-06 |
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