WO2012124359A1 - インピーダンス測定システム、インピーダンス測定方法およびプログラム - Google Patents
インピーダンス測定システム、インピーダンス測定方法およびプログラム Download PDFInfo
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- WO2012124359A1 WO2012124359A1 PCT/JP2012/050445 JP2012050445W WO2012124359A1 WO 2012124359 A1 WO2012124359 A1 WO 2012124359A1 JP 2012050445 W JP2012050445 W JP 2012050445W WO 2012124359 A1 WO2012124359 A1 WO 2012124359A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Definitions
- the present invention relates to an impedance measurement system that measures the impedance of a power supply in an electronic device, an impedance measurement method of the impedance measurement system, and a program.
- Patent Document 1 discloses a technique for measuring a power supply impedance of an electronic device apparatus by applying a signal from the measurement apparatus and measuring the impedance based on a ratio of generated voltage and current.
- the power supply When determining whether the power supply is good or bad by measuring the impedance of the power supply, it is important to measure the impedance viewed from the operating circuit in the operating state of the electronic device.
- the power supply stabilizes the voltage by keeping the impedance to the operation circuit of the electronic device that requires power low. Therefore, it is important to measure and evaluate the impedance viewed from the operating circuit side that requires power.
- impedance changes when an extra part is connected to the operation circuit of the electronic device it is important to measure impedance in a situation close to that during operation.
- An object of the present invention is to provide an impedance measurement system, an impedance measurement method, and a program that can solve the above-described problems.
- the present invention is an impedance measurement system for measuring the impedance of a power source of an electronic device, an input device for inputting information and measurement conditions of the electronic device, and an input from the input device
- a measurement operation program device for selecting a predetermined program for operating the electronic device based on the information and measurement conditions of the electronic device, and operating the selected predetermined program on the electronic device
- the measurement operation program A voltage measuring device for measuring fluctuations in the power supply voltage of the electronic device while operating a predetermined program in the device, and a waveform for calculating frequency characteristics of the power supply voltage from fluctuations in the power supply voltage measured by the voltage measuring device A frequency characteristic of the power supply voltage calculated by the arithmetic unit and the waveform arithmetic unit and a predetermined program by the measurement operation program unit;
- impedance calculation device for calculating the impedance from the current characteristic that occurs when operating the the impedance measurement system and an output device for outputting the impedance the impedance calculation device has calculated.
- the present invention provides an input unit that inputs information and measurement conditions of the electronic device to a computer of an impedance measurement system that measures the impedance of a power source of the electronic device.
- a measurement operation program selection unit that selects a predetermined program for operating the electronic device based on the input information and measurement conditions of the electronic device, and operates the selected predetermined program on the electronic device, the measurement operation
- a voltage measurement unit that measures fluctuations in the power supply voltage of the electronic device in which a predetermined program is operated by a program selection unit, and a waveform calculation unit that calculates frequency characteristics of the power supply voltage from fluctuations in the power supply voltage measured by the voltage measurement unit
- the frequency characteristics of the power supply voltage calculated by the waveform calculation unit and the current generated when the measurement operation program device is operated Impedance calculation unit for calculating the impedance from the sex, a program for executing an output unit that outputs the impedance calculated by the impedance calculation unit.
- the present invention provides an impedance measurement method for measuring the impedance of a power source of an electronic device, the input step for inputting information and measurement conditions of the electronic device, and the input step. Selecting a predetermined program for operating the electronic device based on the information and measurement conditions of the electronic device input in step, and a measurement operation program selecting step for operating the selected predetermined program on the electronic device; A voltage measurement step for measuring fluctuations in the power supply voltage of the electronic device while operating a predetermined program in the measurement operation program selection step, and a frequency characteristic of the power supply voltage from fluctuations in the power supply voltage measured in the voltage measurement step A waveform calculation step for calculating a power supply voltage frequency characteristic calculated in the waveform calculation step An impedance measurement method including an impedance calculation step for calculating an impedance from a current characteristic generated when a predetermined program is operated in the measurement operation program selection step, and an output step for outputting the impedance calculated in the impedance calculation step. is there.
- the present invention it is possible to more accurately measure the impedance viewed from the operating circuit in the operating state of the electronic device.
- FIG. 1 is a block diagram showing a configuration of an impedance measurement system according to an embodiment of the present invention.
- the impedance measurement system 100 includes a condition input device 101, a measurement operation program device 102, a voltage measurement device 103, a waveform calculation device 104, an impedance calculation device 105, and a result output device 106. .
- the condition input device 101 includes an input device such as a keyboard and a mouse, for example, and accepts an input operation by the user.
- the condition input device 101 accepts input of measurement conditions and information on the electronic device 110 to be measured.
- a frequency to be measured is input as a measurement condition, and as information of the electronic device 110 that is a measurement target, a compatible program type, operation current value, power supply voltage value, operation A clock is input.
- the measurement operation program device 102 selects a program that causes the electronic device 110 that is the measurement target to perform the measurement operation based on the information of the electronic device 110 that is the measurement target and the measurement conditions that are input to the condition input device 101.
- the electronic device 110 is operated by the program.
- the current waveform flowing in the circuit is determined by the program to be operated. Therefore, the measurement operation program can cause the electronic device 110 to generate a specific current waveform accompanying the operation of the circuit.
- the voltage measuring device 103 measures the voltage fluctuation generated in the power supply of the electronic device 110 by the operation according to the measurement operation program.
- the voltage measurement device 103 is realized with the same configuration as, for example, a general oscilloscope or an A / D converter.
- the waveform calculation device 104 performs calculation processing such as filtering and time-frequency conversion (for example, Fourier transform) on the measured voltage fluctuation data (voltage waveform) to obtain frequency characteristics of voltage fluctuation.
- filtering averaging and sampling rate change processing
- the sampling rate required under the conditions input by the apparatus 101 and the absorption of the difference between the data length and the measurement conditions at the voltage measuring apparatus 103 are performed.
- the impedance calculation device 105 includes data obtained by processing the voltage waveform (frequency characteristics of voltage fluctuations obtained by the waveform calculation device 104) and information on the electronic device 110 to be measured (frequency characteristics of current obtained from the measurement operation program device 102). ) And the impedance of the measurement operation program (voltage divided by current).
- the result output device 106 outputs the calculated impedance.
- the result output device 106 is configured by a display device such as a display or a printer, and the impedance calculated by the impedance calculation device 105 is displayed.
- the operating current of the electronic device 110 that is, the impedance using the current flowing from the operating circuit as a signal source can be measured.
- the impedance viewed from the operation circuit can be measured.
- FIG. 2 is a flowchart for explaining the operation of the impedance measurement system according to the embodiment of the present invention.
- the CPU board is targeted as the electronic device 310 to be measured.
- information on the electronic device 110 to be measured and frequency information to be measured are input from the input device 101.
- a CPU type and a clock frequency of 100 MHz are inputted, and information such as 100 kHz to 30 MHz is inputted as a frequency to be measured.
- the measurement operation program device 102 selects a program (control method) for operating the electronic device 110 based on the input information (step S1).
- the measurement operation program device 102 stores a program to be operated by each CPU and data of a current flowing to the CPU which is the electronic device 110 when the operation is performed, and an appropriate program is selected from the data. To do.
- a program for operating the CPU corresponding to the input CPU type is selected.
- the voltage measuring device 103 performs voltage measurement setting (step S2).
- the voltage measurement device 103 includes a conversion unit that performs A / D conversion on the power supply voltage of the measurement device 110, and determines the sampling rate of A / D conversion from the measurement frequency input from the input device 101.
- 100 MHz sampling is set so that the Nyquist frequency satisfies the measurement condition of 30 MHz.
- the measurement time is set to 10 microseconds or more so that data with a lower limit of the measurement frequency of 100 kHz can be obtained.
- the voltage range to be measured is set from the power supply voltage value of the CPU board.
- the measurement operation program device 102 starts device control (step S3). More specifically, the program is transferred to the electronic device 110 and the CPU that is the electronic device 110 is operated. Next, the voltage measuring device 103 measures voltage fluctuations accompanying the operation of the CPU that is the electronic device 110 (step S204). Next, when the set measurement time has elapsed, the voltage measurement device 103 ends the voltage measurement (step S5).
- the measurement operation program device 102 ends the control of the electronic device 110 (step S6).
- the waveform calculation device 104 performs Fourier transform on the measured voltage waveform delivered from the voltage measurement device 103, and calculates the frequency characteristics of the voltage fluctuation (step S7).
- the impedance calculation device 105 acquires the frequency characteristics of the voltage fluctuation calculated by the waveform calculation device 104 and the information of the measurement operation program device 102 (frequency characteristics of the current obtained from the measurement operation program device 102). The impedance is calculated by dividing the voltage by the current (step S8).
- the output device 106 outputs the calculated impedance result to a display, a printer, or the like (step S9). Thereafter, the process of FIG.
- FIG. 3 is a block diagram showing a system configuration for realizing an impedance measurement system according to an embodiment of the present invention by a computer and its program.
- an input device 301 corresponds to the condition input device 101 shown in FIG. 1, and includes a keyboard, a mouse as a pointing device, a trackball, a touch sensor, and the like.
- the computer 301 includes a CPU, various memories (RAM, ROM), an I / F, and the like, and executes a predetermined program, whereby the measurement operation program device 102, the voltage measurement device 103, the waveform calculation shown in FIG.
- the device 104, the impedance calculation device 105, and the like are realized.
- the storage device 308 is realized by an internal storage device or an external storage device, and stores various data associated with program execution of the computer 302.
- the output device 304 includes a monitor, a printer, and the like, and corresponds to the result output device 106 in FIG.
- the impedance measurement program 305 is a program executed by the computer 302 and realizes the operation shown in the flowchart of FIG.
- the electronic device 310 is a device to be measured and corresponds to the electronic device 110 in FIG.
- the present invention does not need to use a special device and can be realized using a general computer (hardware & software).
- the measurement operation is performed by the electronic device, the circuit itself is regarded as a signal generation source, and the voltage is measured during the operation, whereby the impedance measurement viewed from the operation circuit in the operation state of the electronic device is performed. It is possible to obtain an impedance value that can be determined and whether the power supply is good or bad. Moreover, since the impedance seen from the operating circuit is required, the impedance characteristics inside the operating device can be obtained.
- the impedance measurement method described above is realized by a computer reading a program. Therefore, each process of the above-described impedance measurement method is stored in a computer-readable recording medium in the form of a program, and each process described above is performed by the computer reading and executing this program.
- the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.
- the program may be distributed to an external computer via a communication line, and the computer that has received the distribution may execute the distributed program.
- the program may be for realizing a part of the implementation steps of the impedance measurement method described above. Furthermore, what can implement
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Abstract
Description
本願は、2011年3月17日に、日本に出願された特願2011-058974号に基づき優先権を主張し、その内容をここに援用する。
102 測定動作プログラム装置
103 電圧測定装置
104 波形演算装置
105 インピーダンス計算装置
106 結果出力装置
110 測定対象の電子装置
310 測定対象の電子装置
301 入力装置
302 コンピュータ
303 記憶装置
304 出力装置
305 インピーダンス測定プログラム
Claims (9)
- 電子装置の電源のインピーダンスを測定するインピーダンス測定システムであって、
前記電子装置の情報と測定条件とを入力する入力装置と、
前記入力装置から入力された前記電子装置の情報と測定条件とに基づいて前記電子装置を動作させる所定のプログラムを選択し、選択した前記所定のプログラムを前記電子装置で動作させる測定動作プログラム装置と、
前記測定動作プログラム装置で所定のプログラムを動作させている間の前記電子装置の電源電圧の変動を測定する電圧測定装置と、
前記電圧測定装置で測定された電源電圧の変動から電源電圧の周波数特性を算出する波形演算装置と、
前記波形演算装置で算出した電源電圧の周波数特性と前記測定動作プログラム装置で所定のプログラムを動作させた際に発生する電流特性とからインピーダンスを算出するインピーダンス計算装置と、
前記インピーダンス計算装置が算出したインピーダンスを出力する出力装置とを備えるインピーダンス測定システム。 - 前記波形演算装置は、
電源電圧の周波数特性を算出する前後に、フィルタリング処理を実行する請求項1に記載のインピーダンス測定システム。 - 前記測定動作プログラム装置は、
前記電子装置を動作させる所定のプログラムと、前記所定のプログラムを前記電子装置で動作させた際に前記電子装置に発生する電流特性とを記憶する請求項1または2に記載のインピーダンス測定システム。 - 前記電圧測定装置は、
前記入力装置から入力された前記測定条件に基づいて、A/D変換のサンプリングレートと測定時間と測定する電圧レンジとを決定する請求項1から3のいずれかに記載のインピーダンス測定システム。 - 電子装置の電源のインピーダンスを測定するインピーダンス測定システムのコンピュータに、
前記電子装置の情報と測定条件とを入力する入力部、
前記入力部で入力された前記電子装置の情報と測定条件とに基づいて前記電子装置を動作させる所定のプログラムを選択し、前記選択した所定のプログラムを前記電子装置で動作させる測定動作プログラム選択部、
前記測定動作プログラム選択部で所定のプログラムを動作させた前記電子装置の電源電圧の変動を測定する電圧測定部、
前記電圧測定部で測定された電源電圧の変動から電源電圧の周波数特性を算出する波形演算部、
前記波形演算部で算出した電源電圧の周波数特性と前記測定動作プログラム選択部で動作させた際に発生する電流特性とからインピーダンスを算出するインピーダンス計算部、
前記インピーダンス計算部で算出したインピーダンスを出力する出力部
を実行させるプログラム。 - 前記波形演算部は、
電源電圧の周波数特性を算出する前後に、フィルタリング処理を実行する請求項5に記載のプログラム。 - 前記測定動作プログラム選択部は、
前記電子装置を動作させる所定のプログラムと、前記所定のプログラムを前記電子装置で動作させた際に前記電子装置に発生する電流特性とを記憶する請求項5または6に記載のプログラム。 - 前記電圧測定部は、
前記入力部から入力された前記測定条件に基づいて、A/D変換のサンプリングレートと測定時間と測定する電圧レンジとを決定する請求項5から7のいずれかに記載のプログラム。 - 電子装置の電源のインピーダンスを測定するインピーダンス測定方法であって、
前記電子装置の情報と測定条件とを入力する入力ステップと、
前記入力ステップで入力された前記電子装置の情報と測定条件とに基づいて前記電子装置を動作させる所定のプログラムを選択し、選択した前記所定のプログラムを前記電子装置で動作させる測定動作プログラム選択ステップと、
前記測定動作プログラム選択ステップで所定のプログラムを動作させている間の前記電子装置の電源電圧の変動を測定する電圧測定ステップと、
前記電圧測定ステップで測定された電源電圧の変動から電源電圧の周波数特性を算出する波形演算ステップと、
前記波形演算ステップで算出した電源電圧の周波数特性と前記測定動作プログラム選択ステップで所定のプログラムを動作させた際に発生する電流特性とからインピーダンスを算出するインピーダンス計算ステップと、
前記インピーダンス計算ステップで算出したインピーダンスを出力する出力ステップとを含むインピーダンス測定方法。
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US14/004,659 US9213051B2 (en) | 2011-03-17 | 2012-01-12 | Impedance measurement system, impedance measurement method and program |
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JPS63108284A (ja) * | 1986-10-24 | 1988-05-13 | Nissan Motor Co Ltd | 自動車用バツテリの診断装置 |
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JPH0787007A (ja) * | 1993-09-14 | 1995-03-31 | Matsushita Electric Ind Co Ltd | 携帯電話装置 |
JP2007265895A (ja) * | 2006-03-29 | 2007-10-11 | Yokogawa Electric Corp | 燃料電池の特性測定装置及び方法 |
JP2009292282A (ja) * | 2008-06-04 | 2009-12-17 | Fujitsu Ten Ltd | バッテリ管理装置及びバッテリ管理方法 |
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US6265881B1 (en) * | 1991-04-05 | 2001-07-24 | Georgia Tech Research Corporation | Method and apparatus for measuring ground impedance |
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US7383140B2 (en) * | 2004-08-16 | 2008-06-03 | National Instruments Corporation | Capacitance, inductance and impedance measurements using multi-tone stimulation and DSP algorithms |
JP4925595B2 (ja) | 2005-03-23 | 2012-04-25 | 株式会社エヌエフ回路設計ブロック | 交流インピーダンス測定装置及び方法 |
US7629795B2 (en) * | 2007-07-30 | 2009-12-08 | John D. Terleski | Vector impedance measurement system and method of using same |
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JPS63108284A (ja) * | 1986-10-24 | 1988-05-13 | Nissan Motor Co Ltd | 自動車用バツテリの診断装置 |
JPH06347517A (ja) * | 1993-06-02 | 1994-12-22 | Ford Motor Co | 信号混在下での集積回路のテスト方法およびその装置 |
JPH0787007A (ja) * | 1993-09-14 | 1995-03-31 | Matsushita Electric Ind Co Ltd | 携帯電話装置 |
JP2007265895A (ja) * | 2006-03-29 | 2007-10-11 | Yokogawa Electric Corp | 燃料電池の特性測定装置及び方法 |
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JP2014093587A (ja) * | 2012-11-01 | 2014-05-19 | Ovit:Kk | 異常検知装置 |
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