CN101807102A - Power signal detection system, method and portable electronic device - Google Patents
Power signal detection system, method and portable electronic device Download PDFInfo
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- CN101807102A CN101807102A CN200910008903A CN200910008903A CN101807102A CN 101807102 A CN101807102 A CN 101807102A CN 200910008903 A CN200910008903 A CN 200910008903A CN 200910008903 A CN200910008903 A CN 200910008903A CN 101807102 A CN101807102 A CN 101807102A
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Abstract
The invention relates to a power signal detection system, a method and a portable electronic device, in particular to a power signal detection system and a method. The power signal detection system comprises a power supplier and a portable electronic device, wherein the power supplier is used for supplying power signals; and the portable electronic device is connected with the power supplier and used for receiving the power signals. The portable electronic device comprises a sensing element, a detection module and a power management module, wherein the sensing element is arranged for the power signals to pass through; the detection module is electrically connected with the sensing element and used for detecting the power signals passing through the sensing element; and the power management module is electrically connected with the detection module and used for distinguishing the power signals and carrying out power management on the portable electronic device. When the portable electronic device is connected to the power supplier with insufficient wattage, power management can be performed. The invention can avoid the damage caused by overloading or overheating, and the power signal detection system can save the manufacture cost.
Description
Technical field
The present invention relates to a kind of power signal detection system and method, particularly relate to a kind of in order to reduce the power signal detection system and the method for central processing unit speed.
Background technology
Along with the progress in epoch, notebook computer has become the electronic product of popularizing very much in the daily life.And under the considering of manufacturing cost, the common notebook computer less power supply unit of wattage of can arranging in pairs or groups.Yet, for the task performance and the safety of notebook computer system, the notebook computer system corresponding power supply unit of must arranging in pairs or groups.If the notebook computer system is connected the power supply unit of not enough wattage, for example will need 90 watts notebook computer system to connect 65 watts power supply unit, may have influence on the task performance and the security of whole notebook computer system, also might make power supply unit damage.
In the middle of prior art, can utilize the usefulness of the charging chip (Charger IC) of notebook computer internal system, to detect the power supply signal wattage as the power supply signal that detects input.But when the power supply signal wattage was not enough, charging chip was merely able to utilize the mode that stops to charge to protect the notebook computer system, and can't protect power supply unit.On the other hand, prior art also installs comparer additional in the notebook computer system, comes the power supply signal of input is detected.But thus, will make manufacturing cost increase.
Therefore, need the system and method for a kind of new detection power supply signal of invention, to solve the disappearance that prior art was taken place.
Summary of the invention
Fundamental purpose of the present invention is that a kind of power signal detection system and portable electron device are being provided, and has the function of identification power supply signal.
Another fundamental purpose of the present invention is that a kind of power supply signal detection method is being provided.
For reaching above-mentioned purpose, power signal detection system of the present invention comprises power supply unit and portable electron device.Power supply unit is in order to the power supply signal.Portable electron device and power supply unit electrically connect to receive power supply signal.Portable electron device comprises sensing component, detection module and power management module.Sensing component is in order to pass through power supply signal.Detection module and sensing component electrically connect, in order to detect the power supply signal by this sensing component.Power management module and detection module electrically connect, and in order to by distinguishing power supply signal, portable electron device are carried out power management.
Power supply signal detection method of the present invention is in order to detect a power supply signal of power supply unit output, described power supply signal is in order to supply a portable electron device, and described power supply signal detection method may further comprise the steps: the input power supply signal is to pass through sensing component; Detect sensing component to produce a voltage signal; And the power management of carrying out portable electron device according to voltage signal.
Portable electron device of the present invention, electrically connect to receive a power supply signal with a power supply unit, described portable electron device has the function that detects described power supply signal, described portable electron device comprises: a sensing component, in order to pass through described power supply signal, one detection module, electrically connect with described sensing component, in order to detect described power supply signal by described sensing component, an and power management module, electrically connect with described detection module,, described portable electron device is carried out a power management in order to by distinguishing described power supply signal.
System and method of the present invention can immediately be carried out power management when portable electron device is connected to the power supply unit of not enough wattage, to avoid portable electron device or power supply unit overload or overheated and cause damage.And be compared to prior art, power signal detection system can be saved down manufacturing cost.
Description of drawings
Fig. 1 is the Organization Chart of power signal detection system of the present invention.
Fig. 2 is the flow chart of steps of power supply signal detection method of the present invention.
Fig. 3 A-3B is the flow chart of steps of power management of the present invention.
The primary clustering symbol description:
Power supply unit detection system 1 sensing component 13
Portable electron device 10 central processing units 14
Detection module 11 counters 15
Power management module 12 power supply units 20
Embodiment
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, cited below particularlyly go out specific embodiments of the invention, and cooperate appended accompanying drawing, be described in detail below.
Below please also refer to the Organization Chart of Fig. 1 about power supply unit detection system of the present invention.
Power supply unit detection system 1 of the present invention comprises portable electron device 10 and power supply unit 20.Power supply unit 20 is given portable electron device 10 by being connected with portable electron device 10 to supply a power supply signal.Power supply unit detection system 1 is in order to detect the wattage of power supply unit 20 power supply signal of importing, to judge whether to meet the setting of portable electron device 10.
In one embodiment of this invention, portable electron device 10 can be notebook computer, but the present invention is not as limit.Portable electron device 10 comprises detection module 11, power management module 12, sensing component 13, central processing unit 14 and counter 15.The power supply signal of power supply unit 20 inputs is at first by sensing component 13.In the present embodiment, sensing component 13 is a resistive element, but the present invention is not as limit.Detection module 11 can be and connects one charging chip (Charger IC) of (figure does not show) of battery in the portable electron device 10, but the present invention is not as limit.Detection module 11 electrically connects with sensing component 13, flows through the power supply signal of sensing component 13 in order to detection.Thus, detection module 11 can produce voltage signal.
Power management module 12 can be keyboard controller (Keyboard Controller, KBC), embedded controller (Embedded Controller, EC) or microprocessor.Power management module 12 electrically connects with detection module 11, in order to the voltage signal by detection module 11, can calculate the wattage of learning power supply signal, and pick out the supply wattage of power supply unit 20 simultaneously.Thus, can carry out further power management to portable electron device 10 according to its wattage.For example reduce the speed of the central processing unit 14 of portable electron device 10, to reduce the wattage that portable electron device 10 will consume.The method of its power management has detailed description in the back, so do not repeat them here.
On the other hand, power management module 12 inside have counter 15.Power management module 12 can promote the speed of central processing unit 14 when power supply unit 20 can be supplied the power supply signal of higher-wattage.And for fear of power management module 12 misjudgments, power management module 12 can reach tally function by the counter 15 of inside, to repeat its determining program.
Then please refer to the flow chart of steps of Fig. 2 about power supply signal detection method of the present invention.Be noted that herein, though below be that example illustrates the method that power supply signal of the present invention detects to have power signal detection system 1, the method that power supply signal of the present invention detects is not so that be used in power signal detection system 1 and exceed.
At first power supply unit 20 carry out step 201 earlier: import a power supply signal.
Input to portable electron device 10 at first by power supply unit 20 supplies one power supply signal, and with power supply signal.
Then carry out step 202 again: detect power supply signal, to produce voltage signal by sensing component 13.
This moment, detection module 11 promptly detected the power supply signal by sensing component 13.Because in the present embodiment, sensing component 13 is a resistive element, so power supply signal has pressure drop when flowing through sensing component 13 and produces.Detection module 11 promptly detects this pressure drop can obtain voltage signal.
Then execution in step 203 in portable electron device 10: by the voltage signal that is detected to distinguish power supply signal.
Learn voltage signal in step 202 after, power management module 12 can calculate learns that the power supply signal that power supply unit 20 is supplied at this moment is the signal of how many wattages.
Carry out step 204 at last: the power management that carries out portable electron device.
After learning 20 wattages that can supply of power supply unit, the wattage that power management module 12 is promptly permitted according to the power supply unit 20 of prior setting is carried out power managements to portable electron device 10.Thus, can avoid portable electron device 10 or power supply unit 20 to close or damage because of electric current is excessive.
For example, if portable electron device 10 is connected to the power supply unit 20 of not enough wattage, for example the system requirements when portable electron device 10 exceed 65 watts, but are connected to 65 watts power supply unit 20.This moment, power management module 12 will carry out power management, and to reduce the wattage of the required consumption of portable electron device 10 inner subassemblies, the total wattage that makes portable electron device 10 be consumed can not exceed 65 watts.Thus, just can avoid damaging portable electron device 10 and power supply unit 20.
And the flow process of the detailed power management of the present invention is please in the lump with reference to the flow chart of steps of figure 3A-3B about power management of the present invention.
At first execution in step 301: the value that obtains a voltage signal.
Power management module 12 obtains the value of voltage signal earlier.The signal of voltage signal for being produced to detection module 11 via power supply unit 20, sensing component 13, that is in above-mentioned steps 202 signal of gained.Power management module 12 is stored in the value of voltage signal in the register.
Then carry out step 302: judge whether to exceed one first setting value that portable electron device sets.
Power management module 12 can be made comparisons its value set in advance and the value of voltage signal earlier.First setting value be portable electron device 10 and power supply unit 20 under normal condition, the highest wattage of the carrying of permitting.When voltage signal exceeded first setting value of setting, the wattage of promptly representing portable electron device 10 to need at this moment to consume will be greater than the tolerance band of 20 wattages that can supply of power supply unit.
Therefore, if exceed first setting value, then carry out step 303: judge that whether central processing unit is at low speed.
Power management module 12 checks earlier whether the speed of central processing unit 14 is carried out at low speed.The speed of supposing central processing unit 14 when the situation of low speed, does not then need to reduce the speed of central processing unit 14 again, and can finish the flow process of this power management.
If not, then carry out step 304: the speed that reduces central processing unit.
If central processing unit 14 is under the state of high frequency, then power management module 12 reduces the speed of central processing unit 14, and portable electron device 10 required wattages are reduced.For example the frequency with central processing unit 14 is reduced to 1GHz by 2GHz.
Be noted that herein power management module 12 also can determine the mode with central processing unit 14 frequency reducings.For example directly the speed of central processing unit 14 is reduced to License Value, the instability during perhaps for fear of portable electron device 10 work, power management module 12 also can be reduced to License Value with the speed of central processing unit 14 stage by stage.On the other hand, also can stop charging earlier, do the frequency reducing action at central processing unit 14 again, perhaps stop earlier charging stage by stage, again central processing unit 14 be carried out frequency reducing stage by stage.Above-mentioned four kinds of modes all can be according to demand, or look the stiffness of system of portable electron device 10 and set, and the present invention is not as limit.
If do not exceed first setting value, then carry out step 305: judge whether to be lower than one second setting value that portable electron device 10 sets.
Power management module 12 judges whether the value of voltage signal is lower than second setting value again.Wherein second setting value is portable electron device 10 when general operate as normal, the minimum wattage that can consume.
If do not have, then carry out step 306: the speed that keeps central processing unit 14.
In step 305, can determine that the power supply signal that power supply unit 20 is supplied is in the tolerance band of portable electron device 10 work, therefore do not adjust the speed of central processing unit 14, and finish the flow process of this power management.
If be lower than second setting value, then carry out step 307: repeated execution of steps 305.
This moment, power management module 12 can first repeated execution of steps 305, that is judged whether the value of primary voltage signal is lower than one second setting value that portable electron device 10 sets again.And the number of times that simultaneously repeats to judge with calculating by the tally function of counter 15, to obtain register value.
Then carry out step 308: whether determining step 305 is set up and is reached a specific times.
In step 308, power management module 12 repeats to judge whether that the value of voltage signal is lower than second setting value that portable electron device 10 sets, and judges whether to reach specific times.For example, if after power management module 12 was judged through three times, the value of voltage signal all was lower than second setting value, can determine that power management module 12 is correct judgments.Be noted that just above-mentioned judgement number of times does not exceed with three times.Thus, can avoid power management module 12 misjudgments.
If do not reach specific times, then may be because power management module 12 misjudgments.Therefore promptly carry out step 309: keep the speed of central processing unit 14, and finish the flow process of this power management.This step 309 is identical with step 306, so do not repeat them here.
If after having reached specific times, then carry out step 310: judge that whether central processing unit 14 is in high speed.
If voltage signal is lower than second setting value, the power supply wattage abundance of then representing 20 of power supply units to supply can be supplied the required of portable electron device 10 fully.Therefore power management module 12 is checked the speed of central processing unit 14 earlier.
If central processing unit 14 then carry out step 311 not under the duty of high frequency at this moment: the speed that promotes central processing unit.
Power management module 12 can promote the speed of central processing unit 14, makes portable electron device 10 can have best treatment efficiency.
Be noted that herein power management module 12 also can determine the mode with central processing unit 14 raising frequencies.For example directly the speed of central processing unit 14 is promoted to License Value, the instability during perhaps for fear of portable electron device 10 work, power management module 12 also can be stage by stage be promoted to License Value with the speed of central processing unit 14.On the other hand, also can do the raising frequency action at central processing unit 14 earlier, discharge charging current again, perhaps, stage by stage central processing unit 14 be carried out raising frequency, discharge charging current more stage by stage.Above-mentioned four kinds of modes all can be according to demand, or look the stiffness of system of portable electron device 10 and set, and the present invention is not as limit.
And carry out step 312 simultaneously: remove register value.
Power management module 12 is removed it and is deposited the register value that repeats to judge, carries out determining program once again to avoid power management module 12.
If central processing unit 14 then carry out step 312 equally, and is finished the flow process of this power management in the following time of duty of high frequency at this moment.Be noted that if under the situation of wattage deficiency, the speed with central processing unit 14 promotes rashly, then can cause portable electron device 10 or power supply unit 20 to damage.Therefore preferred implementation of the present invention is that first execution in step 307 and step 308 repeat to judge that execution in step 309 and step 310 promote the speed of central processing unit 14 again.
Can be returned to step 301 at last, to wait for the input of next voltage signal.
Be noted that herein power supply signal detection method of the present invention is not exceeded with above-mentioned order of steps, as long as can reach purpose of the present invention, but the also change of above-mentioned order of steps.
By above-mentioned system and method, can when being connected to the power supply unit 20 of not enough wattage, portable electron device 10 can immediately carry out power management, to avoid portable electron device 10 or power supply unit 20 overloads or overheated and cause damage.And be compared to prior art, power signal detection system 1 can be saved down manufacturing cost.
To sum up institute is old, and no matter the present invention everywhere all shows it totally different in the feature of known technology with regard to purpose, means and effect, earnestly asks the auditor to perceive, and grants quasi patent early, makes Jiahui society, and the true feeling moral just.Only it should be noted that above-mentioned many embodiment give an example for convenience of explanation, the present invention's interest field required for protection should be as the criterion so that claims scope is described naturally, but not only limits to the foregoing description.
Claims (22)
1. power signal detection system comprises:
One power supply unit is in order to supply a power supply signal; And
One portable electron device electrically connects to receive described power supply signal with described power supply unit, and described portable electron device comprises:
One sensing component is in order to pass through described power supply signal;
One detection module electrically connects with described sensing component, in order to detect the described power supply signal by described sensing component; And
One power management module electrically connects with described detection module, in order to by distinguishing described power supply signal, described portable electron device is carried out a power management.
2. power signal detection system as claimed in claim 1, wherein said power management module is judged when described power supply signal exceeds one first setting value that described portable electron device sets, and reduces the speed of a central processing unit of described portable electron device.
3. power signal detection system as claimed in claim 1, wherein said power management module is judged when described power supply signal is lower than one second setting value that described portable electron device sets, and promotes the speed of the described central processing unit of described portable electron device.
4. power supply signal detection method, in order to detect a power supply signal of power supply unit output, described power supply signal is in order to supply a portable electron device, and described power supply signal detection method comprises:
Import described power supply signal, to pass through a sensing component;
Detect described power supply signal by described sensing component; And
Carry out a power management of described portable electron device according to described power supply signal.
5. power supply signal detection method as claimed in claim 4, the step of wherein carrying out described power management comprises:
Judge whether described power supply signal exceeds one first setting value that described portable electron device sets;
If then reduce the speed of the described central processing unit of described portable electron device.
6. power supply signal detection method as claimed in claim 5 also comprises:
Earlier judge that whether a central processing unit of described portable electron device is at low speed; And
If not, carry out the step of the speed of the described central processing unit that reduces described portable electron device again.
7. power supply signal detection method as claimed in claim 5 also comprises the step that stops to charge.
8. power supply signal detection method as claimed in claim 5 also comprises the step of the speed that reduces described central processing unit stage by stage.
9. power supply signal detection method as claimed in claim 8 also comprises stopping the step of charging stage by stage.
10. power supply signal detection method as claimed in claim 5, the step of wherein carrying out described power management comprises:
Judge whether described power supply signal is lower than one second setting value that described portable electron device sets;
If not, the speed that then keeps the described central processing unit of described portable electron device; And
If then promote the speed of the described central processing unit of described portable electron device.
11. power supply signal detection method as claimed in claim 10 also comprises:
Whether the described central processing unit of judging earlier described portable electron device is in high speed; And
If not, then carry out the step of the speed of the described central processing unit that promotes described portable electron device again.
12. power supply signal detection method as claimed in claim 10 also comprises:
Repeat the judgement flow process, for the step of the speed of the described central processing unit that promotes described portable electron device again.
13. power supply signal detection method as claimed in claim 10 also comprises the step that discharges charging current.
14. power supply signal detection method as claimed in claim 10 also comprises the step of the speed that promotes described central processing unit stage by stage.
15. power supply signal detection method as claimed in claim 14 also comprises the step that discharges charging current stage by stage.
16. a portable electron device electrically connects to receive a power supply signal with a power supply unit, described portable electron device has the function that detects described power supply signal, and described portable electron device comprises:
One sensing component is in order to pass through described power supply signal;
One detection module electrically connects with described sensing component, in order to detect the described power supply signal by described sensing component; And
One power management module electrically connects with described detection module, in order to by distinguishing described power supply signal, described portable electron device is carried out a power management.
17. portable electron device as claimed in claim 16, wherein said power management module is judged when described power supply signal exceeds one first setting value that described portable electron device sets, and reduces the speed of a central processing unit of described portable electron device.
18. portable electron device as claimed in claim 16, wherein said power management module is judged when described power supply signal is lower than one second setting value that described portable electron device sets, and promotes the speed of the described central processing unit of described portable electron device.
19. portable electron device as claimed in claim 16, wherein said power management module are a keyboard controller, an embedded controller or a microprocessor.
20. portable electron device as claimed in claim 16, wherein said sensing component are a resistive element.
21. portable electron device as claimed in claim 16, wherein said detection module are a charging chip.
22. portable electron device as claimed in claim 16, described power management module also comprises a counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910008903 CN101807102B (en) | 2009-02-12 | 2009-02-12 | Power signal detection system, method and portable electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910008903 CN101807102B (en) | 2009-02-12 | 2009-02-12 | Power signal detection system, method and portable electronic device |
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| CN101807102A true CN101807102A (en) | 2010-08-18 |
| CN101807102B CN101807102B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910008903 Active CN101807102B (en) | 2009-02-12 | 2009-02-12 | Power signal detection system, method and portable electronic device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880271A (en) * | 2011-07-15 | 2013-01-16 | 宏碁股份有限公司 | Electronic device and method for judging maximum output power |
| CN103713720A (en) * | 2012-09-28 | 2014-04-09 | 技嘉科技股份有限公司 | Circuit system with warning function |
| CN104423524B (en) * | 2013-08-29 | 2017-05-17 | 纬创资通股份有限公司 | Power supply system |
| CN110286733A (en) * | 2019-06-28 | 2019-09-27 | 无锡睿勤科技有限公司 | Method, equipment and the storage medium of Electric adapter adaptive setting cpu performance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300744B1 (en) * | 2000-02-10 | 2001-10-09 | Siliconix Incorporated | High-efficiency battery charger |
| JP2002010516A (en) * | 2000-06-21 | 2002-01-11 | Nec Yonezawa Ltd | Power supply device for portable information processing apparatus and power feed system used for the same |
| CN2630926Y (en) * | 2003-03-28 | 2004-08-04 | 纬创资通股份有限公司 | Power source control system for laptop computer |
| CN2901666Y (en) * | 2006-03-28 | 2007-05-16 | 蓝天电脑股份有限公司 | Power source managing device |
-
2009
- 2009-02-12 CN CN 200910008903 patent/CN101807102B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880271A (en) * | 2011-07-15 | 2013-01-16 | 宏碁股份有限公司 | Electronic device and method for judging maximum output power |
| CN103713720A (en) * | 2012-09-28 | 2014-04-09 | 技嘉科技股份有限公司 | Circuit system with warning function |
| CN103713720B (en) * | 2012-09-28 | 2017-09-05 | 技嘉科技股份有限公司 | Circuit system with alarm function |
| CN104423524B (en) * | 2013-08-29 | 2017-05-17 | 纬创资通股份有限公司 | Power supply system |
| CN110286733A (en) * | 2019-06-28 | 2019-09-27 | 无锡睿勤科技有限公司 | Method, equipment and the storage medium of Electric adapter adaptive setting cpu performance |
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| Publication number | Publication date |
|---|---|
| CN101807102B (en) | 2013-04-17 |
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