CN101807102B - 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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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 power signal detection system and method in order to reduce 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 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 task performance and the security of whole notebook computer system, also might so that power supply unit damage.
In the middle of prior art, can utilize the charging chip (Charger IC) of notebook computer internal system as the usefulness of the power supply signal that detects input, to detect the power supply signal wattage.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 be so that the 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 occured.
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: a power supply unit and a portable electron device; Described power supply unit is in order to supply a power supply signal; Described portable electron device and described power supply unit are electrically connected to receive described power supply signal, and described portable electron device comprises: a sensing component, a detection module and a power management module; Described sensing component is in order to pass through described power supply signal; Described detection module and described sensing component are electrically connected, in order to detect the described power supply signal by described sensing component; Described power management module and described detection module are electrically connected, and in order to by distinguishing described power supply signal, described portable electron device are carried out a power management, and described power management module also comprises a counter; Wherein said power management module is judged when described power supply signal exceeds first setting value that described portable electron device sets, and reduces the speed of a central processing unit of described portable electron device; Described power management module is judged when described power supply signal is lower than second setting value that described portable electron device sets, and promotes the speed of the described central processing unit of described portable electron device; And reach tally function by described counter, to repeat described decision operation.
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, the detection module that described portable electron device comprises a sensing component, is electrically connected with described sensing component, and a power management module that is electrically connected with described detection module, described power management module also comprises a counter; Described power supply signal detection method comprises: input described power supply signal, to pass through described sensing component; Described detection module detects the described power supply signal by described sensing component; And described power management module is carried out a power management of described portable electron device according to described power supply signal; 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 central processing unit of described portable electron device; If not, judge then 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; If then promote the speed of the described central processing unit of described portable electron device; And reach tally function by described counter, to repeat described decision operation.
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 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 and a power supply unit are electrically connected to receive a power supply signal, 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 is electrically connected with described sensing component, in order to detect the described power supply signal by described sensing component; And a power management module, be electrically connected with described detection module, in order to by distinguishing described power supply signal, described portable electron device is carried out a power management, described power management module also comprises a counter; Wherein said power management module is judged when described power supply signal exceeds first setting value that described portable electron device sets, and reduces the speed of a central processing unit of described portable electron device; Described power management module is judged when described power supply signal is lower than second setting value that described portable electron device sets, and promotes the speed of the described central processing unit of described portable electron device; And reach tally function by described counter, to repeat described decision operation.
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 lower 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 and other purpose of the present invention, feature and advantage 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 Fig. 1 about the Organization Chart of 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 by being connected with portable electron device 10, to supply a power supply signal to portable electron device 10.Power supply unit detection system 1 is in order to detect the wattage of 20 input power signals of power supply unit, 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 resistive element, but the present invention is not as limit.Detection module 11 can be a charging chip (Charger IC) that connects portable electron device 10 interior battery (not shown), but the present invention is not as limit.Detection module 11 is electrically connected 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 is electrically connected 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 simultaneously the supply wattage of power supply unit 20.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, the wattage that will consume to reduce portable electron device 10.The method of its power management has detailed description in the back, therefore do not repeat them here.
On the other hand, power management module 12 inside have counter 15.Power management module 12 can when power supply unit 20 can be supplied the power supply signal of higher-wattage, promote the speed of central processing unit 14.And for fear of power management module 12 misjudgments, power management module 12 can reach by the counter 15 of inside tally function, to repeat its determining program.
Then please refer to Fig. 2 about the flow chart of steps of power supply signal detection method of the present invention.Should be noted herein, though below having power signal detection system 1 method that power supply signal of the present invention detects as example illustrates, the method that power supply signal of the present invention detects is not so that be used in power signal detection system 1 and be limited.
At first power supply unit 20 carry out step 201 first: input 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 the power supply signal by sensing component 13, to produce voltage signal.
This moment, detection module 11 namely 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 namely detects this pressure drop can obtain voltage signal.
Then in portable electron device 10 interior execution in step 203: by the voltage signal that detects 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 namely 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 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, to reduce the wattage of the required consumption of portable electron device 10 inner subassemblies, so that total wattage that portable electron device 10 consumes 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 first the value of voltage signal.The signal of voltage signal for producing 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 of setting in advance and the value of voltage signal first.The 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 the first setting value of setting, the wattage that namely represents portable electron device need consumption 10 this moment will be greater than the tolerance band of 20 wattages that can supply of power supply unit.
Therefore, if exceed the first setting value, then carry out step 303: judge that whether central processing unit is at low speed.
Power management module 12 checks first 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.
Should be noted, power management module 12 also can determine the mode with central processing unit 14 frequency reducings herein.For example directly the speed of central processing unit 14 is down to License Value, unstable during perhaps for fear of portable electron device 10 work, power management module 12 also can be down to License Value with the speed of central processing unit 14 stage by stage.On the other hand, also can stop first charging, do the frequency reducing action for central processing unit 14 again, perhaps stop stage by stage first charging, 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 the 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 the second setting value again.Wherein the second setting value is portable electron device 10 when general normal operation, the minimum wattage that can consume.
If no, 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 the 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 the 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 the second setting value, can determine that power management module 12 is correct judgments.Just should be noted, above-mentioned judgement number of times is not limited 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 namely 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, therefore 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 the second setting value, then represent the power supply wattage abundance that 20 of power supply units can be supplied, can supply the required of portable electron device 10 fully.Therefore power management module 12 checks first the speed of central processing unit 14.
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.
Should be noted, power management module 12 also can determine the mode with central processing unit 14 raising frequencies herein.For example directly the speed of central processing unit 14 is promoted to License Value, unstable 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 for central processing unit 14 first, discharge again charging current, perhaps, stage by stage central processing unit 14 be carried out raising frequency, discharge stage by stage again charging current.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 once again determining program 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 lower time of duty of high frequency at this moment.The wattage deficiency should be noted, if in the situation that rashly with the speed lifting of central processing unit 14, then can cause portable electron device 10 or power supply unit 20 to damage.Therefore the better embodiment of the present invention is that first execution in step 307 and step 308 repeat to judge, 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.
Should be noted, power supply signal detection method of the present invention is not limited with above-mentioned order of steps herein, 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 lower 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 early quasi patent, makes Jiahui society, and the true feeling moral just.Only it should be noted, above-mentioned many embodiment give an example for convenience of explanation, and 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 above-described embodiment.
Claims (14)
1. power signal detection system comprises:
One power supply unit is in order to supply a power supply signal; And
One portable electron device is electrically connected 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 is electrically connected with described sensing component, in order to detect the described power supply signal by described sensing component; And
One power management module is electrically connected with described detection module, in order to by distinguishing described power supply signal, described portable electron device is carried out a power management, and described power management module also comprises a counter;
Wherein said power management module is judged when described power supply signal exceeds first setting value that described portable electron device sets, and reduces the speed of a central processing unit of described portable electron device; Described power management module is judged when described power supply signal is lower than second setting value that described portable electron device sets, and promotes the speed of the described central processing unit of described portable electron device; And
Reach tally function by described counter, to repeat described decision operation.
2. 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, the detection module that described portable electron device comprises a sensing component, is electrically connected with described sensing component, and a power management module that is electrically connected with described detection module, described power management module also comprises a counter; Described power supply signal detection method comprises:
Input described power supply signal, to pass through described sensing component;
Described detection module detects the described power supply signal by described sensing component; And
Described power management module is carried out a power management of described portable electron device according to described power supply signal;
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 central processing unit of described portable electron device;
If not, judge then 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;
If then promote the speed of the described central processing unit of described portable electron device; And
Reach tally function by described counter, to repeat described decision operation.
3. power supply signal detection method as claimed in claim 2 also comprises:
Judge that first whether a central processing unit of described portable electron device is at low speed; And
If not, carry out again the step of the speed of the described central processing unit that reduces described portable electron device.
4. power supply signal detection method as claimed in claim 2 also comprises the step that stops to charge.
5. power supply signal detection method as claimed in claim 2 also comprises the step of the speed that reduces stage by stage described central processing unit.
6. power supply signal detection method as claimed in claim 5 also comprises stopping stage by stage the step of charging.
7. power supply signal detection method as claimed in claim 2 also comprises:
Judge that first whether the described central processing unit of described portable electron device is in high speed; And
If not, then carry out again the step of the speed of the described central processing unit that promotes described portable electron device.
8. power supply signal detection method as claimed in claim 2 also comprises:
Repeat the judgement flow process, for the step of the speed of the described central processing unit that promotes again described portable electron device.
9. power supply signal detection method as claimed in claim 2 also comprises the step that discharges charging current.
10. power supply signal detection method as claimed in claim 2 also comprises the step of the speed that promotes stage by stage described central processing unit.
11. power supply signal detection method as claimed in claim 10 also comprises the step that discharges stage by stage charging current.
12. a portable electron device is electrically connected 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 is electrically connected with described sensing component, in order to detect the described power supply signal by described sensing component; And
One power management module is electrically connected with described detection module, in order to by distinguishing described power supply signal, described portable electron device is carried out a power management, and described power management module also comprises a counter;
Wherein said power management module is judged when described power supply signal exceeds first setting value that described portable electron device sets, and reduces the speed of a central processing unit of described portable electron device; Described power management module is judged when described power supply signal is lower than second setting value that described portable electron device sets, and promotes the speed of the described central processing unit of described portable electron device; And
Reach tally function by described counter, to repeat described decision operation.
13. portable electron device as claimed in claim 12, wherein said sensing component are a resistive element.
14. portable electron device as claimed in claim 12, wherein said detection module are a charging chip.
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| CN 200910008903 CN101807102B (en) | 2009-02-12 | 2009-02-12 | Power signal detection system, method and portable electronic device |
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| CN 200910008903 CN101807102B (en) | 2009-02-12 | 2009-02-12 | Power signal detection system, method and portable electronic device |
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| CN101807102B true CN101807102B (en) | 2013-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN103713720B (en) * | 2012-09-28 | 2017-09-05 | 技嘉科技股份有限公司 | Circuit system with alarm function |
| TWI519938B (en) * | 2013-08-29 | 2016-02-01 | 緯創資通股份有限公司 | Power supply system |
| CN110286733B (en) * | 2019-06-28 | 2020-10-09 | 无锡睿勤科技有限公司 | Method, equipment and storage medium for adaptively setting CPU performance of pen power adapter |
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| 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 |
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| 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 |
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