CN101290333B - Power testing device and method - Google Patents

Power testing device and method Download PDF

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Publication number
CN101290333B
CN101290333B CN 200710097857 CN200710097857A CN101290333B CN 101290333 B CN101290333 B CN 101290333B CN 200710097857 CN200710097857 CN 200710097857 CN 200710097857 A CN200710097857 A CN 200710097857A CN 101290333 B CN101290333 B CN 101290333B
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CN
China
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mentioned
information
under test
circuit under
power
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CN 200710097857
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Chinese (zh)
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CN101290333A (en
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柯俊伟
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和硕联合科技股份有限公司
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Abstract

The invention provides a method and a device for testing power. The method comprises the following steps that: firstly, control information is generated by a circuit to be tested, a specific voltage and a sensing signal are generated according to the control information; afterwards, the sensing signal is converted into ratio information to obtain and display power information by calculating the ratio information. Therefore, the method can obtain the consumed power of the circuit to be tested without dismounting a plate or cutting a wire, etc.

Description

Power testing method and device

Technical field

The invention relates to a kind of power testing method and device, and particularly relevant for a kind of power testing method and device that does not need external sensing resistor.

Background technology

Along with the continuous progress of science and technology, make various electronic products constantly weed out the old and bring forth the new, the especially appearance of computer has changed people's life pattern completely.In the field of computer,, be transformed into short and small frivolous portable computer gradually, for example notebook computer (NotebookPC), palm PC (Pocket PC) and panel computer (Tablet PC) etc. in the past by desktop computer.

In computer system, the power consumption of CPU (CPU) accounts for the major part of the power consumption of whole computer system.The power consumption of CPU is to increase according to the increase of operating frequency and operating voltage; With the portable computer of battery as power-supply unit, the power consumption of CPU is undoubtedly focus that each tame manufacturer notes and the problem of probing into for main.

Shown in Figure 1 is the test base that the known power method of testing is suitable for.Please with reference to Fig. 1, probing into known technology is power consumption how to measure CPU.Test base 100 comprises CPU 101 and electric pressure converter 102.At this, CPU 101 can be seen a control information to electric pressure converter 102 off.Electric pressure converter 102 then is the operating voltage that produces a correspondence according to control information, uses for CPU 101.

When tester's desire is measured the consumed power of this CPU 101, understand at the circuit that cuts off on the test base 100 between CPU 101 and the electric pressure converter 102 usually, and be connected in series a sensing resistor 103 on the line.Afterwards, the tester can measure through the electric current of sensing resistor 103 and the voltage of pressure drop on sensing resistor 103, and according to the voltage of measuring gained and the consumed power that electric current calculates CPU 101.

Yet the data that the known power method of testing is obtained not are the actual power consumption of CPU 101.Because in measuring process, test base 100 necessary extra serial connection one sensing resistor 103, and this sensing resistor 103 will influence data veracity.By this, the known power method of testing does not also meet on the science refinement and asks accurate spirit, and this measuring method also must be torn the plate secant open, the power that consumes again consuming time.

Summary of the invention

The present invention provides a kind of power testing method, need not just can obtain the power consumption of circuit under test through tearing actions such as plate, secant open.

The present invention provides a kind of device for testing power, can directly learn the consumed power of circuit under test through display, and the power management of planning system by this, and then obtains the best cooling mechanism of circuit under test.

The present invention proposes a kind of power testing method, comprises the following steps.At first, produce a control information through a circuit under test.Afterwards, produce a specific voltage and a sensing signal according to control information, wherein specific voltage is the usefulness as the operating voltage of circuit under test.By this, convert the sensing signal to a percent information, and through calculating percent information, obtain and show a power information.

In one embodiment of this invention, when above-mentioned control information comprises a plurality of Control of Voltage information, then above-mentioned power testing method also comprises the following steps.At first, from these Control of Voltage information, choose one of which as a specific voltage control information.Afterwards, in step a and b, the specific voltage control information according to selected produces a specific sensing signal, and converts specific sensing signal to a special ratios information.And in step c, obtain a certain power information through calculating special ratios information.

By this, in steps d, judge whether to choose one by one these Control of Voltage information; If do not choose one by one as yet; Then from the above-mentioned Control of Voltage information that is not selected, choose one as the specific voltage control information again, and repeating step a to d, otherwise; If choose one by one, then according to most certain power information generating that produced and show a peak power information.

The present invention proposes a kind of device for testing power in addition, comprises circuit under test, electric pressure converter, analog-to-digital converter and display.Wherein, circuit under test is in order to produce a control information.Electric pressure converter can produce a specific voltage and a sensing signal according to control information, and wherein circuit under test then operates under this specific voltage.Afterwards, analog-to-digital converter converts the sensing signal to a percent information, and circuit under test then receives and calculate this percent information, to produce a power information.At last, display is in order to show this power information.

In one embodiment of this invention, above-mentioned device for testing power also comprises test base, and wherein electric pressure converter, analog-to-digital converter and display all are configured on this test base.

Beneficial effect:

The present invention is because of need not just obtaining the consumed power of circuit under test, so can effectively improve the inconvenience and the disappearance of conventional power measuring method through tearing actions such as plate, secant open.In addition, the present invention also can obtain the best cooling mechanism of circuit under test through the consumed power information of circuit under test.

For let above and other objects of the present invention, feature and advantage can be also obviously understandable, hereinafter is special lifts preferred embodiment, and is described with reference to the accompanying drawings as follows.

Description of drawings

Shown in Figure 1 is the test base that the known power method of testing is suitable for.

Shown in Figure 2 is device for testing power in order to key diagram 3 embodiment.

Shown in Figure 3 is the process flow diagram of accordinging to the power testing method of one embodiment of the invention.

Shown in Figure 4 for obtain the process flow diagram of best cooling mechanism according to one embodiment of the invention.

Embodiment

Before setting forth spirit of the present invention with embodiment; Hypothesis uses power testing method of the present invention to be applicable to a device for testing power earlier; And this device for testing power is as shown in Figure 2, it is characterized in that device for testing power 200 comprises circuit under test 201, electric pressure converter 202, analog-to-digital converter 203, display 204 and test base 205.It is characterized in that circuit under test 201, electric pressure converter 202, analog-to-digital converter 203 all are configured on the test base 205 with display 204.And circuit under test 201 couples electric pressure converter 202 and display 204, and electric pressure converter 202 couples analog-to-digital converter 203, and 203 of analog-to-digital converters couple circuit under test 201.

What deserves to be mentioned is that above-mentioned hypothesis is not in order to qualification the present invention, affiliated those skilled in the art can modify following embodiment according to spirit of the present invention slightly, all still belong to covering scope of the present invention.In addition, power testing method of the present invention can be applicable on the power consumption of measuring CPU, so above-mentioned test base can be a computer motherboard, and circuit under test can be a CPU.In addition, above-mentioned electric pressure converter 202 can be arranged in pairs or groups with the ISL6208 chip by the ISL6260C chip that Intersil company produces and constituted, and perhaps can be arranged in pairs or groups by the same cake core of companies such as Motorola, Ti, Maxim production constitutes.

Shown in Figure 3 is the process flow diagram of accordinging to the power testing method of one embodiment of the invention.Please one circuit under test 201 at first is provided, and this circuit under test 201 be arranged on the test base 200 (step 301) simultaneously with reference to Fig. 2 and Fig. 3.In the process of the power consumption of measuring circuit under test 201, circuit under test 201 can produce a control information (step 302), and is sent to electric pressure converter 202.Behind electric pressure converter 202 receiving control informations; Can produce a specific voltage and a sensing signal (step 303) according to this control information; Wherein electric pressure converter 202 is sent to circuit under test 201 with specific voltage; With the operating voltage as circuit under test 201, the sensing signal then is sent to analog-to-digital converter 203.

After analog-to-digital converter 203 receives the sensing signal, can convert the sensing signal to percent information (step 304), and be sent to circuit under test 201.By this, circuit under test 201 can receive and calculate this percent information, and then produces a power information (step 305), and it is sent to display 204.At last, the power information that display 204 can calculate gained with circuit under test 201 in real time is presented on the screen, can learn correct consumed power (step 306) rapidly.

What deserves to be mentioned is that the sensing signal that above-mentioned electric pressure converter 202 is produced, its signal have comprised the operating voltage of circuit under test 201 and the information of electric current.That is to say that electric pressure converter 202 can also detect the operating current of circuit under test 201 with this operating voltage running the time except meeting provides specific voltage to circuit under test 201 as the operating voltage according to the control information that receives.In addition, electric pressure converter 202 also can produce a specific formulation automatically, so that the usefulness of circuit under test 201 rated outputs to be provided.And in the process of calculating percent information, circuit under test 201 can be carried out computing according to the specific formulation Comparative Examples information that electric pressure converter 202 produces automatically, obtains a power information according to operation result at last.

In addition, when the control information that is produced when circuit under test 201 comprised most Control of Voltage information, device for testing power 200 also can be obtained its best cooling mechanism according to these Control of Voltage information.For instance; Shown in Figure 4 for according to the process flow diagram of obtaining best cooling mechanism of one embodiment of the invention, with reference to Fig. 4, when the control information that is produced when circuit under test 201 comprises most Control of Voltage information; At first; Circuit under test 201 can be chosen one of which as a specific voltage control information (step 401), and export this Control of Voltage information to electric pressure converter 202 earlier from these Control of Voltage information.

After electric pressure converter received Control of Voltage information, electric pressure converter 202 can produce a corresponding specific sensing signal (step 402) according to the Control of Voltage information that is received, and exports this specific sensing signal to analog-to-digital converter 203.And analog-to-digital converter 203 can convert specific sensing signal to special ratios information (step 403) after receiving this specific sensing signal, and is sent to circuit under test 201.By this, circuit under test 201 can be carried out computing to the special ratios information that receives according to the specific formulation that electric pressure converter 202 produces automatically, and then obtains a certain power information (step 404).

After obtaining a certain power information, the circuit under test 201 of this moment can judge whether Control of Voltage information chooses (step 405) one by one.If when Control of Voltage information is not chosen as yet one by one, choose one as specific voltage control information (step 406) in the Control of Voltage information that then circuit under test 201 will never be selected.And the specific voltage control information that obtains again will be proceeded step 402-404, to obtain another certain power information.In other words, under the circulation of step 402-406, circuit under test 201 will obtain most certain power information according to most Control of Voltage information.

Relatively; When circuit under test 201 is judged Control of Voltage information and has been chosen one by one; When just circuit under test 201 obtains most certain power information according to most Control of Voltage information; Circuit under test 201 will be compared out a peak power information from these certain power information, and through display 204 this peak power information real-time will be presented at (step 407) on the screen.At last, device for testing power 200 is obtained the maximum consumption of power of circuit under test according to this peak power information.So the branch at power supply is mixed; Device for testing power 200 can also be differentiated the duty (busy or idle) of circuit under test 201 according to peak power information; And then, obtain the best cooling mechanism (step 408) of circuit under test 201 through adjusting the radiating mode of circuit under test 201.

In sum, the present invention mainly is a Control of Voltage information of utilizing circuit under test to produce, obtains the actual power consumption of circuit under test.So compared to known techniques, the present invention need not just can obtain the power consumption of circuit under test through tearing actions such as plate, secant open.In other words, the present invention can effectively improve the inconvenience and the disappearance of known power method of testing.

Though the present invention discloses as above with preferred embodiment; But it is not in order to qualification the present invention, those skilled in the art, under the premise without departing from the spirit and scope of the present invention; Can do some changes and modification, protection scope of the present invention is as the criterion with claim of the present invention by this.

Claims (9)

1. power testing method is characterized in that comprising:
Through a circuit under test, produce a control information;
According to above-mentioned control information, produce a specific voltage and a sensing signal through an electric pressure converter, wherein above-mentioned circuit under test operates under the above-mentioned specific voltage, and above-mentioned sensing signal comprises the information of the operating voltage and the electric current of above-mentioned circuit under test;
With above-mentioned sensing signal, convert a percent information through an analog-to-digital converter to;
Above-mentioned circuit under test is calculated above-mentioned percent information according to the specific formulation that above-mentioned electric pressure converter provides, and obtains a power information according to result of calculation; And through the above-mentioned power information of display demonstration;
Wherein,
Above-mentioned electric pressure converter is sent to above-mentioned circuit under test with above-mentioned specific voltage, with the operating voltage as above-mentioned circuit under test;
Above-mentioned electric pressure converter can also detect the operating current of above-mentioned circuit under test when aforesaid operations voltage operates.
2. power testing method according to claim 1 is characterized in that also comprising:
Above-mentioned circuit under test is provided.
3. power testing method according to claim 1 is characterized in that above-mentioned circuit under test comprises a CPU.
4. power testing method according to claim 1 is characterized in that the step of " above-mentioned circuit under test is calculated above-mentioned percent information according to the specific formulation that above-mentioned electric pressure converter provides, and obtains a power information according to result of calculation " comprising:
The characteristic of specific voltage that above-mentioned electric pressure converter foundation is above-mentioned and above-mentioned sensing signal produces above-mentioned specific formulation; And
Above-mentioned circuit under test is calculated above-mentioned percent information according to above-mentioned specific formulation, and produces above-mentioned power information according to this.
5. power testing method is characterized in that comprising:
Through a circuit under test, produce a control information, above-mentioned control information comprises a plurality of Control of Voltage information;
From these above-mentioned Control of Voltage information, choose one of which through above-mentioned circuit under test as a specific voltage control information;
A. through the above-mentioned specific voltage control information of electric pressure converter foundation, produce a specific sensing signal;
B. pass through an analog-to-digital converter with above-mentioned specific sensing signal, convert a special ratios information to;
C. above-mentioned circuit under test is calculated above-mentioned special ratios information according to the specific formulation that above-mentioned electric pressure converter produces automatically, and then obtains a certain power information;
D. above-mentioned circuit under test judges whether to choose one by one these above-mentioned Control of Voltage information; If do not choose one by one as yet; Then from the above-mentioned Control of Voltage information that is not selected, choose one as above-mentioned specific voltage control information again; And repeating step a to d, if choose one by one, then according to these above-mentioned certain power information generating and show a peak power information.
6. power testing method according to claim 5 also comprises:
According to above-mentioned peak power information, obtain the best cooling mechanism of above-mentioned circuit under test.
7. device for testing power is characterized in that comprising:
One circuit under test is in order to produce a control information;
One electric pressure converter, in order to produce a specific voltage and a sensing signal according to above-mentioned control information, wherein above-mentioned circuit under test operates under the above-mentioned specific voltage, and above-mentioned sensing signal comprises the information of the operating voltage and the electric current of above-mentioned circuit under test;
One analog-to-digital converter, in order to convert above-mentioned sensing signal to a percent information, wherein above-mentioned circuit under test receives this percent information and calculates above-mentioned percent information according to the specific formulation that above-mentioned electric pressure converter provides, to produce a power information; And
One display, in order to showing above-mentioned power information,
Wherein,
Above-mentioned electric pressure converter is sent to above-mentioned circuit under test with above-mentioned specific voltage, with the operating voltage as above-mentioned circuit under test;
Above-mentioned electric pressure converter can also detect the operating current of above-mentioned circuit under test when aforesaid operations voltage operates.
8. device for testing power according to claim 7 is characterized in that also comprising a test base, and wherein above-mentioned electric pressure converter, above-mentioned analog-to-digital converter and above-mentioned display are configured on the above-mentioned test base.
9. device for testing power according to claim 7 is characterized in that above-mentioned circuit under test comprises a CPU.
CN 200710097857 2007-04-20 2007-04-20 Power testing device and method CN101290333B (en)

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Application Number Priority Date Filing Date Title
CN 200710097857 CN101290333B (en) 2007-04-20 2007-04-20 Power testing device and method

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Application Number Priority Date Filing Date Title
CN 200710097857 CN101290333B (en) 2007-04-20 2007-04-20 Power testing device and method

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CN101290333B true CN101290333B (en) 2012-12-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106124846B (en) * 2016-06-14 2019-04-23 联想(北京)有限公司 A kind of power recognition methods and electronic equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5508607A (en) * 1994-08-11 1996-04-16 Fluke Corporation Electronic test instrument for component test
CN1885274A (en) * 2005-06-24 2006-12-27 鸿富锦精密工业(深圳)有限公司 CPU power estimating method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5508607A (en) * 1994-08-11 1996-04-16 Fluke Corporation Electronic test instrument for component test
CN1885274A (en) * 2005-06-24 2006-12-27 鸿富锦精密工业(深圳)有限公司 CPU power estimating method

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