WO2010150532A1 - 電子部品とその故障検知方法 - Google Patents
電子部品とその故障検知方法 Download PDFInfo
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- WO2010150532A1 WO2010150532A1 PCT/JP2010/004165 JP2010004165W WO2010150532A1 WO 2010150532 A1 WO2010150532 A1 WO 2010150532A1 JP 2010004165 W JP2010004165 W JP 2010004165W WO 2010150532 A1 WO2010150532 A1 WO 2010150532A1
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- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2829—Testing of circuits in sensor or actuator systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- 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
-
- 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
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2882—Testing timing characteristics
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- the present invention relates to an electronic component having a function capable of detecting a failure, and a failure detection method for the electronic component, which are used in automobiles, aircraft, ships, robots, and other various electronic devices.
- FIG. 8 is a circuit diagram of a conventional electronic component 501 disclosed in Patent Document 1.
- the electronic component 501 includes a vibration element 1, a drive circuit 2 that supplies a drive signal to the vibration element 1, a detection signal processing unit that receives a sense signal from the vibration element 1, and a sense that is output from the detection signal processing unit. And an output circuit for outputting a signal.
- the drive circuit 2 includes an analog / digital converter 3 that performs analog / digital conversion on the monitor signal output from the vibration element 1, an automatic gain amplifier 4 that amplifies the monitor signal output from the analog / digital converter 3, and an automatic And a digital / analog converter 5 for digital / analog conversion of the monitor signal output from the gain amplifier 4.
- a failure detection function can be added to the electronic component 501 by separately adding a scan test circuit including an external pin and a shift register to the electronic component 501.
- the scan test circuit includes a large number of flip-flops connected in series, it is difficult to reduce the size of the electronic component 501 by the wiring connecting the shift registers.
- the electronic component includes: a vibration element; a drive circuit that supplies a drive signal to the vibration element; a clock frequency generation unit that outputs a clock signal to the drive circuit; a clock frequency control unit that controls the frequency of the clock signal; A current consumption measuring unit for detecting current consumption; and a failure detection unit electrically connected to the current consumption measuring unit and the clock frequency control unit.
- the consumption current detected when the clock frequency control unit changes the frequency of the clock signal changes, and the consumption current measurement unit detects the detected change in consumption current.
- the failure detection unit detects a failure from a change in frequency of the clock signal and a change in current consumption.
- This electronic component has a failure detection function and can be miniaturized.
- FIG. 1 is a circuit diagram of an electronic component according to an embodiment of the present invention.
- FIG. 2 shows an electronic component failure detection method according to the embodiment.
- FIG. 3 is a circuit diagram of another electronic component in the embodiment.
- FIG. 4 is a circuit diagram of another electronic component in the embodiment.
- FIG. 5 is an electric circuit diagram of still another electronic component in the embodiment.
- FIG. 6 shows a method for adjusting the frequency of the clock signal of the electronic component shown in FIG.
- FIG. 7 is a circuit diagram of still another electronic component in the embodiment.
- FIG. 8 is a circuit diagram of a conventional electronic component.
- FIG. 1 is a circuit diagram of an electronic component 1001 according to Embodiment 1 of the present invention.
- the electronic component 1001 includes a vibration element 11, a drive circuit 12 that supplies a drive signal Sd to the vibration element 11, a detection signal processing unit 13 that receives a sense signal Ss from the vibration element 11, and a detection signal processing unit 13.
- An output circuit 14 that outputs a sense signal to be output, a clock frequency generator 15 that outputs a clock signal Sck, a clock frequency controller 16 that controls the frequency of the clock signal Sck, a drive circuit 12, and a detection signal processor 13
- Current consumption measuring unit 17 for detecting the current consumption of the current, and a failure detecting unit 18 electrically connected to the current consumption measuring unit 17 and the clock frequency control unit 16.
- the clock frequency generator 15 outputs a clock signal Sck to a part of the drive circuit 12 and the detection signal processor 13.
- the consumption current measuring unit 17 detects the consumption current of a part of the drive circuit 12 and the detection signal processing unit 13 from which the clock signal Sck is output.
- the vibration element 11 vibrates in response to the drive signal, and outputs a monitor signal Sm having a frequency and a phase corresponding to the frequency and phase of the vibration.
- the monitor signal Sm is supplied to the drive circuit 12.
- the vibration element 11 outputs a sense signal Ss in accordance with, for example, an inertia force caused by applied acceleration, angular velocity, or the like.
- the failure detection unit 18 detects a failure of the electronic component 1001 from the relationship between the change in the frequency of the clock signal and the change in the current consumption.
- FIG. 2 shows the relationship between the frequency fck of the clock signal Sck and the current consumption.
- the consumption current I of a digital circuit is expressed by the following equation.
- the consumption current I (1/2) ⁇ fck ⁇ V ⁇ C
- the consumption current I is represented by the product of the clock frequency fck, the power supply voltage V, and the input capacitance C.
- the slope of the change in the clock frequency and the change in the current consumption changes.
- the frequency fck changes from the frequency f1 to the frequency f2
- the current consumption I changes from the current I1 to the current I2 due to the characteristic P1
- the circuit is faulty.
- the consumption current I changes from the current I3 to the current I4 due to the characteristic P2.
- the failure detection unit 18 can determine whether or not there is a failure in the circuit by detecting the current consumption I when the frequency fck is changed. Specifically, the failure detection unit 18 determines that the circuit is operating normally when the change range of the current consumption I when the frequency fck is changed is a predetermined range, and the current consumption I It is determined that the circuit is faulty when the range of the change of is different from the predetermined range.
- the electronic component 1001 can be provided with a failure detection function without providing a scan test circuit for adding a failure detection function to the conventional electronic component 501 shown in FIG. Miniaturization can be realized.
- the test data becomes longer as the circuit scale becomes larger, and a longer time is required for failure detection.
- the electronic component 1001 according to the embodiment can detect a failure in a short time. Therefore, the shipping inspection time in the manufacturing process can be shortened to reduce the cost, and the electronic component 1001 can be started earlier by shortening the self-diagnosis time when starting up the electronic component 1001 after shipment.
- the clock frequency generator 15 has a voltage controlled oscillator (VCO) 19.
- the clock frequency control unit 16 has a voltage control unit 20.
- the voltage controlled oscillator 19 generates a clock signal having a number that varies depending on the supplied voltage.
- the voltage controller 20 controls the frequency fck of the clock signal output from the clock frequency generator 15 by changing the voltage supplied to the voltage controlled oscillator 19.
- the clock frequency generator 15 includes a frequency divider 21, a phase comparator 22, a filter 23, and a switch 24.
- the frequency divider 21 divides the frequency fck of the clock signal Sck generated by the voltage controlled oscillator 19 based on the frequency division ratio.
- the phase comparison unit 22 outputs an output current that changes based on a comparison result obtained by comparing the phase of the signal output from the frequency division unit 21 with the phase of the monitor signal Sm.
- the filter 23 smoothes the output current of the phase comparison unit 22 to convert it into a voltage, and supplies the voltage to the voltage controlled oscillator 19.
- the switch 24 selectively switches the voltage output from the filter 23 and the voltage output from the voltage control unit 20 and supplies the voltage to the voltage controlled oscillator 19.
- the switch 24 supplies the voltage output from the filter 23 to the voltage controlled oscillator 19.
- the phase comparator 22 compares the frequency of the clock signal divided and transmitted by the frequency divider 21 with the frequency of the monitor signal in the drive circuit 12 to adjust the frequency fck of the clock signal Sck to a desired frequency. Therefore, it is desirable that the clock frequency generator 15 can output the clock signal at a more stable frequency.
- the drive circuit 12 includes an analog / digital converter 25 that converts the monitor signal Sm output from the vibration element 11 from analog to digital, an automatic gain amplifier 26 that amplifies the monitor signal output from the analog / digital converter 25, and And a digital / analog converter 27 for converting the monitor signal output from the automatic gain amplifier 26 into a digital / analog converter.
- the clock frequency generator 15 outputs a clock signal Sck to at least one of the analog / digital converter 25, the automatic gain amplifier 26, and the digital / analog converter 27.
- the clock frequency control unit 16 changes the frequency fck of the clock signal Sck output from the clock frequency generation unit 15.
- the consumption current measuring unit 17 detects a change in consumption current of at least one of the analog / digital converter 25, the automatic gain amplifier 26, and the digital / analog converter 27 generated when the frequency fck changes.
- the detection signal processing unit 13 performs analog-to-digital conversion on the sense signal Ss output from the vibration element 11, and outputs the sense signal output from the vibration element 11 from the analog-digital converter 28.
- a detector 29 for detecting based on the monitor signal Sm and a filter 30 for smoothing the detected sense signal and converting it to a DC voltage and outputting it are provided.
- the clock frequency generator 15 outputs a clock signal Sck to at least one of the analog / digital converter 28, the detector 29, and the filter 30.
- the switch 24 supplies the voltage output from the voltage controller 20 to the voltage controlled oscillator 19 instead of the voltage output from the filter 23.
- the consumption current measuring unit 17 detects a change in the consumption current of at least one of the filters 30 of the analog / digital converter 28 and the detector 29 generated when the clock frequency control unit 16 changes the frequency fck.
- the output circuit 14 outputs a failure detection signal from the failure detection unit 18 and also outputs a sense signal from the filter 30.
- the output circuit 14 may output the failure detection signal and the sense signal in a time division manner. That is, the output circuit 14 outputs a failure detection signal during a period in which a failure of the electronic component 1001 is detected, and outputs a sense signal during a period in which the vibration element 11 outputs the sense signal Ss according to, for example, inertial force. To do.
- FIG. 3 is a circuit diagram of another electronic component 1002 in the embodiment. 3, the same reference numerals are assigned to the same parts as those of the electronic component 1001 shown in FIG.
- the power supply 31 supplies a voltage to the consumption current measuring unit 17.
- the power supply 32 supplies a voltage to the current consumption measuring unit 33.
- the consumption current measuring unit 17 detects the consumption current of circuits that handle only digital signals, such as the automatic gain amplifier 26, the detector 29, and the filter 30.
- the current consumption measuring unit 33 detects the current consumption of circuits that handle digital signals and analog signals, such as the analog / digital converters 25 and 28 and the digital / analog converter 27.
- the voltage of the power supply 32 is higher than the voltage of the power supply 31.
- the amplitude of the analog signal in the circuit that handles the analog signal can be increased, so that the signal quality is improved by improving the S / N ratio of the analog signal in the electronic component 1002. Can do.
- the failure detection unit 18 detects a failure of the electronic component 1002 based on the consumption current detected by the consumption current measurement unit 17 and the consumption current detected by the consumption current measurement unit 33.
- FIG. 4 is a circuit diagram of still another electronic component 1003 according to the embodiment. 4, the same parts as those of the electronic component 1002 shown in FIG.
- the failure detection unit 18 detects a failure of the electronic component 1003 based on the consumption current detected by the consumption current measurement unit 17.
- the failure detection unit 34 detects a failure of the electronic component 1003 based on the consumption current detected by the consumption current measurement unit 33.
- FIG. 5 is a circuit diagram of still another electronic component 1004 in the embodiment. 5, the same reference numerals are assigned to the same parts as those of the electronic component 1001 shown in FIG.
- the clock frequency control unit 16 further includes a sensitivity control unit 35.
- the frequency fck of the clock signal Sck output from the clock frequency generator 15 is controlled by changing the voltage supplied from the voltage controller 20 to the voltage controlled oscillator 19.
- the sensitivity control unit 35 controls the sensitivity that is the change amount of the frequency fck with respect to the change amount of the voltage supplied to the voltage controlled oscillator 19.
- FIG. 6 shows the relationship between the control voltage supplied to the voltage controlled oscillator 19 and the oscillation frequency fck of the clock signal Sck generated by the voltage controlled oscillator 19.
- the voltage control unit 20 outputs a constant voltage Vc, and the sensitivity control unit 35 changes the sensitivity of the voltage controlled oscillator 19 from the sensitivity G2 to the sensitivity G1, thereby changing the frequency fck of the clock signal Sck from the frequency fck1 to the frequency fck1.
- the voltage output from the voltage control unit 20 does not need to be variable, which can contribute to further miniaturization of the circuit.
- FIG. 7 is a circuit diagram of still another electronic component 1005 according to the embodiment.
- the clock frequency control unit 16 further includes a frequency division control unit 36 that changes the frequency division ratio of the frequency division unit 21.
- the frequency division control unit 36 changes the output ratio from the phase comparison unit 22 and the voltage output from the filter 23 by changing the frequency division ratio of the frequency division unit 21 to control the frequency fck of the clock signal Sck. Is possible. In this configuration, the voltage output from the voltage control unit 20 does not need to be variable, which can contribute to further miniaturization of the circuit.
- the clock frequency generator 15 can output the clock signal Sck at a stable frequency fck with a small frequency error, the detection error of the current consumption based on the clock frequency is reduced, the fault detection accuracy is improved, and the fault detection is performed. Can be suppressed.
- the electronic components 1001 to 1005 including the vibration element 11 are a temperature compensated crystal oscillator (TCXO) using a crystal vibration element, a Micro Electro Mechanical Systems (MEMS) oscillator using a silicon vibration element, or the like. Can also be applied.
- TCXO temperature compensated crystal oscillator
- MEMS Micro Electro Mechanical Systems
- the electronic component in the present invention has a failure detection function and can be miniaturized, it is useful in automobiles, aircraft, ships, robots, and other various electronic devices.
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Abstract
Description
上記式で示すように、消費電流Iはクロック周波数fckと電源電圧Vと入力容量Cの積で示される。その回路中の一部に断線やショート等の故障が生じると、クロック周波数の変化と消費電流の変化の傾きが変わる。図2に示すように、周波数fckが周波数f1から周波数f2に変化すると、回路が正常に動作している場合には消費電流Iは特性P1により電流I1から電流I2に変化し、回路に故障がある場合には消費電流Iは特性P2により電流I3から電流I4に変化する。このように、周波数fckを変化させたときに回路が正常に動作している場合の消費電流Iの変化の範囲と、回路に故障がある場合の消費電流Iの変化の範囲が異なる。したがって、故障検知部18は、周波数fckを変化させたときの消費電流Iを検知することで、回路に故障があるか否かを判定することができる。具体的には、故障検知部18は、周波数fckを変化させたときの消費電流Iの変化の範囲が所定の範囲である場合には回路が正常に動作していると判定し、消費電流Iの変化の範囲がその所定の範囲と異なる場合に回路が故障していると判定する。
12 駆動回路
15 クロック周波数発生部
16 クロック周波数制御部
17 消費電流測定部(第1の消費電流測定部)
18 故障検知部(第1の故障検知部)
33 消費電流測定部(第2の消費電流測定部)
34 故障検知部(第2の故障検知部)
Claims (16)
- 振動素子と、
前記振動素子に駆動信号を供給する駆動回路と、
前記駆動回路の少なくとも一部にクロック信号を出力するクロック周波数発生部と、
前記クロック信号の周波数を制御するクロック周波数制御部と、
前記駆動回路の前記少なくとも一部の消費電流を検知する第1の消費電流測定部と、
前記第1の消費電流測定部と前記クロック周波数制御部とに電気的に接続された第1の故障検知部と、
を備え、
前記クロック周波数制御部が前記クロック信号の周波数を変化させる際に前記検知された消費電流が変化して、前記第1の消費電流測定部が前記検知された消費電流の変化を検知し、
前記第1の故障検知部は、前記クロック信号の周波数の変化と前記消費電流の変化に基づき故障を検知する、電子部品。 - 前記クロック周波数発生部は前記クロック信号を発生する電圧制御発振器を有し、
前記クロック周波数制御部は電圧制御部を有し、
前記電圧制御部は前記電圧制御発振器に供給する電圧を変化させることにより前記クロック信号の周波数を制御する、請求項1に記載の電子部品。 - 前記クロック周波数発生部は、
前記クロック信号の周波数を分周比に基づき分周する分周部と、
前記分周部から出力された信号の周波数と前記駆動回路内における信号の周波数とを比較して得られた比較結果に基づいて出力電流を変化させる位相比較部と、
前記位相比較部の前記出力電流を平滑化して得られた電圧を前記電圧制御発振器に供給する第1のフィルタと、
をさらに有する、請求項2に記載の電子部品。 - 前記第1のフィルタが供給する前記電圧と前記電圧制御部が供給する電圧とを選択的に切り替えて前記電圧制御発振器に供給するスイッチをさらに備え、
前記駆動回路内における信号の位相又は振幅が所定の値に達した時に、
前記スイッチは前記第1のフィルタが供給する前記電圧を前記電圧制御発振器に供給する、請求項3に記載の電子部品。 - 前記クロック周波数発生部は電圧制御発振器を有し、
前記クロック周波数制御部は前記電圧制御部の感度を制御する感度制御部を有し、
前記感度制御部は前記電圧制御発振器の感度を変化させることにより前記クロック信号の周波数を制御する、請求項1に記載の電子部品。 - 前記クロック周波数発生部は、
電圧制御発振器と、
前記電圧制御発振器からのクロック信号の周波数を分周比に基づき分周する分周部と、
前記分周部から出力された信号の周波数と前記駆動回路内における信号の周波数とを比較して得られた比較結果に応じた出力電流を出力する位相比較部と、
前記位相比較部の前記出力電流を平滑化して得られた電圧を前記電圧制御発振器に出力する第1のフィルタと、
を備え、
前記クロック周波数制御部は前記分周比を変化させる分周制御部を有し、
前記分周制御部が前記分周比を変化させることにより前記クロック周波数発生部から出力される前記クロック信号の前記周波数を制御する、請求項1に記載の電子部品。 - 前記駆動回路は、
前記振動素子から出力されたモニタ信号をアナログ・デジタル変換するアナログ・デジタル変換器と、
前記アナログ・デジタル変換器から出力されたモニタ信号を増幅する自動利得増幅器と、
前記自動利得増幅器から出力されたモニタ信号をデジタル・アナログ変換するデジタル・アナログ変換器と、
を有し、
前記クロック周波数発生部は、前記アナログ・デジタル変換器、自動利得増幅器、デジタル・アナログ変換器の内の少なくとも1つに前記クロック信号を出力し、
前記クロック周波数制御部は前記クロック信号の前記周波数を変化させる際に前記アナログ・デジタル変換器、自動利得増幅器、デジタル・アナログ変換器の内の少なくとも1つの消費電流が変化し、前記第1の消費電流測定部は前記少なくとも1つの消費電流の変化を検知する、請求項1に記載の電子部品。 - 前記第1の消費電流測定部に電圧を供給する第1の電源と、
前記アナログ・デジタル変換器とデジタル・アナログ変換器の内の少なくとも1つの消費電流を検知する第2の消費電流測定部と、
前記第2の消費電流測定部に電圧を供給する第2の電源と、
をさらに備え、
前記第1の消費電流測定部が前記自動利得増幅器の消費電流を検知し、
前記第2の消費電流測定部が前記アナログ・デジタル変換器とデジタル・アナログ変換器の内の少なくとも1つの消費電流を検知し、
前記第1の電源の電圧より前記第2の電源の電圧が高い、請求項7に記載の電子部品。 - 前記第1の故障検知部は前記第1の消費電流測定部が検知した消費電流と前記第2の消費電流測定部が検知した消費電流に基づき故障を検知する、請求項8に記載の電子部品。
- 前記第2の消費電流測定部が検知した消費電流に基づき故障を検知する第2の故障検知部をさらに備え、
前記第1の故障検知部は前記第1の消費電流測定部が検知した消費電流に基づき故障を検知し、前記第2の故障検知部は前記第2の消費電流測定部が検知した消費電流に基づき故障を検知する請求項8に記載の電子部品。 - 振動素子と、
前記振動素子に駆動信号を入力する駆動回路と、
前記振動素子から出力されたセンス信号が入力される検出信号処理部と、
前記検出信号処理部の少なくとも一部にクロック信号を出力するクロック周波数発生部と、
前記クロック信号の周波数を制御するクロック周波数制御部と、
前記検出信号処理部の前記少なくとも一部の消費電流を検知する第1の消費電流測定部と、
前記第1の消費電流測定部と前記クロック周波数制御部とに電気的に接続された第1の故障検知部と、
前記検出信号処理部から出力されるセンス信号を出力する出力回路と、
を備え、
前記検出信号処理部は、
前記振動素子から出力されたセンス信号をアナログ・デジタル変換するアナログ・デジタル変換器と、
前記振動素子から出力されたモニタ信号を用いて前記アナログ・デジタル変換器から出力されたセンス信号を検波する検波器と、
前記検波されたセンス信号を平滑化し直流電圧を出力する第2のフィルタと、
を有し、
前記クロック周波数制御部が前記クロック信号の周波数を変化させる際に前記検知された消費電流が変化して、前記第1の消費電流測定部が前記検知された消費電流の変化を検知し、
前記第1の故障検知部は、前記クロック信号の周波数の変化と前記消費電流の変化に基づき故障を検知する、電子部品。 - 前記クロック周波数発生部は、前記アナログ・デジタル変換器と前記検波器と前記第2のフィルタの内の少なくとも1つにクロック信号を出力する、請求項11に記載の電子部品。
- 前記第1の消費電流測定部に電圧を供給する第1の電源と、
前記アナログ・デジタル変換器の消費電流を検知する第2の消費電流測定部と、
前記第2の消費電流測定部に電圧を供給する第2の電源と、
をさらに備え、
前記第1の消費電流測定部が前記検波器と第2のフィルタの内の少なくともいずれか1つの消費電流を検知し、
前記第1の電源の電圧よりも前記第2の電源の電圧の方が高い、請求項12に記載の電子部品。 - 前記第1の故障検知部は、前記第1の消費電流測定部が検知した消費電流と前記第2の消費電流測定部が検知した消費電流とに基づき故障を検知する、請求項13に記載の電子部品。
- 前記第2の消費電流測定部が検知した消費電流に基づき故障を検知する第2の故障検知部をさらに備え、
前記第1の故障検知部は前記第1の消費電流測定部が検知した消費電流に基づき故障を検知し、
前記第2の故障検知部は前記第2の消費電流測定部が検知した消費電流に基づき故障を検知する、請求項13に記載の電子部品。 - 振動素子と、前記振動素子に駆動信号を供給する駆動回路とを備えた電子部品の故障検知方法であって、
前記駆動回路の少なくとも一部にクロック信号を出力するステップと、
前記クロック信号の周波数を変化させるステップと、
前記周波数の変化による前記駆動回路の前記少なくとも一部の消費電流の変化を検知するステップと、
前記クロック信号の周波数の変化と前記消費電流の変化との関係から故障検知を行うステップと、
を含む、電子部品の故障検知方法。
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EP10791855.9A EP2407793B1 (en) | 2009-06-26 | 2010-06-23 | Electronic part and method of detecting faults therein |
US13/257,342 US8773142B2 (en) | 2009-06-26 | 2010-06-23 | Electronic part and method of detecting faults therein |
CN201080027361.5A CN102460192B (zh) | 2009-06-26 | 2010-06-23 | 电子部件 |
JP2011519598A JP5522168B2 (ja) | 2009-06-26 | 2010-06-23 | 電子部品とその故障検知方法 |
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EP (1) | EP2407793B1 (ja) |
JP (1) | JP5522168B2 (ja) |
KR (1) | KR20120028858A (ja) |
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KR101637668B1 (ko) * | 2014-08-13 | 2016-07-20 | 현대자동차주식회사 | 라디에이터 냉각팬 고장 검출 장치 |
JP6664893B2 (ja) * | 2014-12-19 | 2020-03-13 | 川崎重工業株式会社 | ロボット保守支援装置および方法 |
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- 2010-06-23 WO PCT/JP2010/004165 patent/WO2010150532A1/ja active Application Filing
- 2010-06-23 CN CN201080027361.5A patent/CN102460192B/zh not_active Expired - Fee Related
- 2010-06-23 EP EP10791855.9A patent/EP2407793B1/en not_active Not-in-force
- 2010-06-23 JP JP2011519598A patent/JP5522168B2/ja active Active
- 2010-06-23 US US13/257,342 patent/US8773142B2/en not_active Expired - Fee Related
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EP2407793A1 (en) | 2012-01-18 |
JP5522168B2 (ja) | 2014-06-18 |
CN102460192B (zh) | 2014-11-12 |
EP2407793B1 (en) | 2016-04-06 |
KR20120028858A (ko) | 2012-03-23 |
US20120007641A1 (en) | 2012-01-12 |
US8773142B2 (en) | 2014-07-08 |
EP2407793A4 (en) | 2014-12-17 |
CN102460192A (zh) | 2012-05-16 |
JPWO2010150532A1 (ja) | 2012-12-06 |
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