CN102901994B - Utilize determination sensor verification system and the method for seismograph - Google Patents
Utilize determination sensor verification system and the method for seismograph Download PDFInfo
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- CN102901994B CN102901994B CN201210175463.2A CN201210175463A CN102901994B CN 102901994 B CN102901994 B CN 102901994B CN 201210175463 A CN201210175463 A CN 201210175463A CN 102901994 B CN102901994 B CN 102901994B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/242—Seismographs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/26—Reference-signal-transmitting devices, e.g. indicating moment of firing of shot
Abstract
The present invention relates to a kind of the determination sensor verification system and the method that utilize seismograph, in more detail, a kind of seismological observation measurement data to novel earthquake observation instruments and aging seismometer is related to or shaketalle test data carries out time zone bandpass filter and Hilbert transform is wanted to improve the response spectra amplitude of seismograph and the determination sensor verification system and the method that utilize seismograph of phase determination efficiency.By the present invention to the seismological observation measurement data of novel earthquake observation instruments and aging seismometer or shaketalle test data carries out time zone band-pass filter and seismic sensor response spectra is tried to achieve in Hilbert transform, be provided for the effect improving amplitude and phase determination accuracy thus.Further, can irrelevantly provide the characteristic of sensor with kind of sensor to be determined, thus the inconvenience needing to introduce sensor of the same race can be improved.
Description
Technical field
The present invention relates to a kind of the determination sensor verification system and the method that utilize seismograph, in more detail, relate to a kind of seismological observation measurement data to novel earthquake observation instruments and aging seismometer or shaketalle test data and carry out time zone bandpass filter (Bandpass filter) and Hilbert transform to the determination sensor verification system and the method that utilize seismograph of the response spectra amplitude and phase determination accuracy that improve seismograph.
Background technology
Earthquake monitoring system is measure the main seismograph that uses to measure seismic sensor (seismometer the sensor) (speed of ground moving, acceleration) the device of voltage, when buying novel seismometer, the performance of the seismograph that manufacturing company points out and sensor must be confirmed, may need verification setting in seismological observation the performance of in the past aging earthquake monitoring system.
As seismographic verification method, by seismograph sensor setting on shaking table (vibration generating apparatus), the seismometer sensor vibration that will be measured for benchmark measures with absolute reference sensor by exciting (producing vibration).
Now, a kind of vibration values to measuring is had to perform merely Fourier transform to make after it is transformed to frequency domain, to carry out method for measuring divided by absolute reference sensor measured value.
In this case, there is the shortcoming should grasping performance and the absolute seismometer performance by checking.
Further, when exciting vibration values is very small, because noise measuring is many and may produce mensuration mistake.
Another kind method, as the method for verifying seismograph performance, there is one that two sensors are set in actual seismic observation station, the frequency of the sensor measured from the sensor data (information) with the seismometer sensor response spectra measured is converted, utilizes Frequency spectrum ratio to carry out method for measuring.
The situation of this mensuration, for the part with the noise of sensor own, comprises a lot of noise with regard to the response spectra part of determination sensor.
Further, if only perform said frequencies conversion, then with regard to each frequency, only there is a measured value, therefore can only amplify the error of response spectra.
Therefore, with regard to trying to achieve the seismometer sensor response spectra of the vibration data used measured by seismometer, spectrum lower than the composition of the noise of seismometer sensor own produces the part distorting sensor response spectra, thus need a kind of can by the method suppressing the spectrum lower than the vibration data of the noise of seismometer sensor own to improve correctness.
Further, performing on seismic study, the situation of the measured information of the situation needing to obtain accurate seismic data, the situation needing to revise seismograph or loss registering instrument can produced, now, need a kind of method revising seismograph.
An example of technology, is disclosed in " the seismic event detection system " as Korean granted patent No. 0594625 (2006.06.30. is open) as a setting.
Above-mentioned background technology input obtain seismic signal and filter after, short time average (Short Time average) for seismic signal is exchanged for the interval value of advising timing window (TimeWindow) with the ratio of long-time average (Long Timeaverage), and measure based on the short time average (ST) of the checking value seismic signal rate of change interval with long-time average (LT), differential is carried out to the simulating signal measured, and the substitution of Earthquake occurrence control ripple parameter, store, record controls, computing etc., to utilize slope to control arbitrary two intervals when carrying out differential.
But, background technology as above is when producing microearthquake (Micro Earthquake), background noise and earthquake wave amplitude (Amplitude) can not be distinguished, thus seismic event detection perform reduces significantly, therefore there is the shortcoming can not carried out seismic factors accurately and determine.
Prior art document
Patent documentation
(patent documentation 1) Korean granted patent 0594625 (2006.06.30)
Summary of the invention
Therefore, the present invention considers that the problem of prior art as above proposes, the object of the invention is to, time zone bandpass filter (Bandpass filter) and Hilbert transform are carried out to try to achieve seismic sensor response spectra to the seismological observation measurement data of novel earthquake observation instruments and aging seismometer or shaketalle test data, improves amplitude and phase determination accuracy thus.
Another object of the present invention is, can independently provide the characteristic of sensor with kind of sensor to be determined.
Another object of the present invention is to, when general earthquake observation station arranges two sensors, need not especially by sensor strip to laboratory vibration platform, utilize the data obtained at seismological observation also can perform confirming performance and the checking of sensor.
Another object of the present invention is, with exciting source independently, the channel that only can change seismograph also can the correction of place of execution seismic recorder, so that not only at shaketalle test, but all only can change channel in general earthquake observation station and performs correction work easily.
In order to reach the object of problem to be solved by this invention, the determination sensor verification system of seismograph that utilizes according to one embodiment of the invention comprises: exciting device 200, and it carries out exciting to shaking table; Shaking table 300, its setting is configured with reference sensor 400 and determination sensor 450, is connected with above-mentioned exciting device, and start exciting device time exciting; Signal wire transducer 600, it is for measuring the vibration signal of said reference sensor and determination sensor; Signal amplifier 700, the vibration signal converted in above-mentioned signal wire transducer amplifies by it, and transmits the vibration signal amplified to seismograph; Seismograph 800, it is for measuring the amplification vibration signal transmitted from above-mentioned signal amplifier; Seism processing mechanism 100, it calculates the response spectra of reference sensor and the determination sensor measured at above-mentioned seismograph, the vibration signal of reference sensor is transformed to frequency domain, and after being modified to response spectra, the response spectra of above-mentioned calculating and the response spectra of correction being compared and judges the whether normal of determination sensor.Solve problem of the present invention thus.
There is determination sensor verification system and the method utilizing seismograph of the present invention of above structure and effect, time zone bandpass filter (Bandpass filter) and Hilbert transform are carried out to try to achieve seismic sensor response spectra to the seismological observation measurement data of novel earthquake observation instruments and aging seismometer or shaketalle test data, is provided for the effect improving amplitude and phase determination accuracy thus.
Further, make the characteristic that sensor is independently provided with kind of sensor to be determined, thus the inconvenience needing to introduce sensor of the same race can be improved.
Further, when general earthquake observation station arranges two sensors, need not especially by sensor strip to laboratory vibration platform, the data that obtains at seismological observation also can be utilized to perform confirming performance and the checking of sensor, thus the convenience in use is provided.
And, following better effect is provided: with exciting source independently, the channel only changing seismograph also can the correction of place of execution seismic recorder, so that not only at shaketalle test, and also only can change channel in general earthquake observation station and performs correction work easily.
Accompanying drawing explanation
Fig. 1 is the structural drawing that concise and to the point formation utilizes according to the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 2 utilizes the seism processing mechanism block diagram according to the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 3 utilizes the response spectra calculating part block diagram according to the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 4 represents the process flow diagram utilized according to the determination sensor verification method of the seismograph of one embodiment of the invention.
Fig. 5 represents the process flow diagram utilized according to the processing procedure of the response spectra calculating part of the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 6 to Fig. 7 is for revising the test executive program figure utilized according to the seismograph of the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 8 is for revising the block diagram utilized according to the seismograph of the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 9 represents the process flow diagram utilized according to the seismograph modification method of the determination sensor verification system of the seismograph of one embodiment of the invention.
The explanation of Reference numeral
100: seism processing mechanism
200: exciting device
300: shaking table
400: reference sensor
450: determination sensor
600: signal wire transducer
700: signal amplifier
800: seismograph
Embodiment
For reaching the determination sensor verification system of utilization according to the seismograph of one embodiment of the invention of above-mentioned purpose, it is characterized in that, comprising: exciting device 200, it carries out exciting to shaking table; Shaking table 300, its setting is configured with reference sensor 400 and determination sensor 450, is connected with above-mentioned exciting device, and start exciting device time exciting; Signal wire transducer 600, it is for measuring the vibration signal of said reference sensor and determination sensor; Signal amplifier 700, the vibration signal converted in above-mentioned signal wire transducer amplifies by it, and transmits the vibration signal amplified to seismograph; Seismograph 800, it is for measuring the amplification vibration signal transmitted from above-mentioned signal amplifier; Seism processing mechanism 100, it calculates the response spectra of reference sensor and the determination sensor measured at above-mentioned seismograph, the vibration signal of reference sensor is transformed to frequency domain, and after being modified to response spectra, the response spectra of above-mentioned calculating and the response spectra of correction being compared and judges the whether normal of determination sensor.
Now, above-mentioned seism processing mechanism 100, is characterized in that, comprising: reference sensor frequency domain transformation component 110, and it obtains the vibration signal of reference sensor, utilizes Fourier transform to make it be transformed to frequency domain; Response spectra correction portion 120, it is for revising response spectra by the frequency spectrum converted by said reference sensor frequency domain transformation component divided by theoretical property response spectra or known response spectra; Sensor judging part 130 of the same race, whether it is the sensor of identical type for judgment standard sensor and determination sensor; Identity transformation portion 140, it, for when reference sensor and determination sensor are not the sensors of identical type, take determination sensor as benchmark, frequency domain use differentiate symbol or integral operation symbol convert, to possess identical analytical unit; Response spectra calculating part 150, it is for when reference sensor and determination sensor are the sensor of identical type, utilizes band-pass filter and Hilbert transform to carry out calculated response spectrum; The whether normal judging part 160 of determination sensor, it judges the whether normal of determination sensor for comparing with the response spectra by the correction of response spectra correction portion the response spectra calculated by above-mentioned response spectra calculating part; End value efferent 170, it is for exporting the end value judged at the whether normal judging part of said determination sensor.
Now, above-mentioned response spectra calculating part 150, it is characterized in that, comprise: real part and imaginary part configuration part 151, it utilizes determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, be real part by band-pass filter information setting, be imaginary part by Hilbert transform information setting; Amplitude and phase calculation portion 152, it, for after adding up to the real part and imaginary part that set by real part and imaginary part configuration part, calculates the amplitude and phase place that change in time; Amplitude extraction portion 153, it is for the time series amplitude of the reference sensor calculated by above-mentioned amplitude and phase calculation portion and determination sensor, for only extracting the amplitude of the noise higher than reference sensor or determination sensor itself; Response amplitude spectrum is than calculating part 154, it, for the amplitude extracted by above-mentioned amplitude extraction portion, carrys out calculated response spectral amplitude by the time series amplitude calculated amplitude ratio (determination sensor/reference sensor) of aggregated basis sensor and determination sensor; Response phase spectrum calculating part 155, it is for the phase differential (determination sensor phase-reference sensor phase) of Calculation Basis sensor and determination sensor, calculate mean value and the standard deviation value of phase differential, in phase difference value, carry out calculated response phase spectrum at the fall into a trap mean value of the phase difference value of getting it right in Standard deviation-Range of mean value.
On the other hand, as the determination sensor verification method utilizing seismograph of the present invention, it is characterized in that, comprise the following steps: by starting the exciting device oscillating scanning step (S100) that exciting device makes shaking table vibrate; The experiment information obtaining the vibration signal of reference sensor and the determination sensor measured by seismograph in seism processing mechanism obtains step (S200); Reference sensor frequency domain transformation component 110 obtains the vibration signal of reference sensor, utilizes Fourier transform to make it be transformed to the reference sensor frequency domain shift step (S300) of frequency domain; Response spectra correction portion 120 at the frequency domain converted by reference sensor frequency domain transformation component divided by the theoretical property response spectra correction of reference sensor or known response spectra to revise the response spectra correction step (S400) of response spectra; Whether sensor judging part 130 judgment standard sensor of the same race and determination sensor are the sensor determining step (S500) of the same race of the sensor of identical type; When reference sensor and determination sensor are the sensor of identical type, response spectra calculating part 150 utilizes the response spectra calculation procedure (S700) of band-pass filter and Hilbert transform calculated response spectrum; The whether normal judging part of determination sensor 160 is by comparing to the response spectra calculated by response spectra calculating part and the response spectra by the correction of response spectra correction portion the whether normal determining step of whether normal determination sensor (S800) judging determination sensor; The end value that end value efferent 170 exports the end value judged at the whether normal judging part of determination sensor exports step.
Now, it is characterized in that, judged result in above-mentioned sensor determining step (S500) of the same race, when reference sensor and determination sensor are not the sensors of identical type, it is that benchmark uses differentiate symbol or integral operation symbol to be transformed to the identity transformation step (S600) of identical analytical unit in a frequency domain that identity transformation portion 140 performs with determination sensor.
Now, above-mentioned response spectra calculation procedure (S700), it is characterized in that, comprise the following steps: real part and imaginary part configuration part 151 utilize determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, being real part by band-pass filter information setting, is real part and the imaginary part setting procedure (S710) of imaginary part by Hilbert transform information setting; After amplitude and phase calculation portion 152 add up to the real part set by real part and imaginary part configuration part and imaginary part, calculate amplitude and the phase calculation step (S720) of amplitude and the phase place changed in time; Amplitude extraction portion 153, for the time series amplitude of the reference sensor calculated by amplitude and phase calculation portion and determination sensor, only extracts the amplitude extraction step (S730) of the amplitude of the noise higher than reference sensor or determination sensor itself; Response amplitude spectrum for the amplitude extracted by amplitude extraction portion, carrys out the response amplitude spectrum of calculated response Amplitude spectrum ratio than calculation procedure (S740) by the time series amplitude calculated amplitude ratio (determination sensor/reference sensor) of aggregated basis sensor and determination sensor than calculating part 154; The phase differential (determination sensor phase-reference sensor phase) of response phase spectrum calculating part 155 Calculation Basis sensor and determination sensor, and calculate mean value and the standard deviation value of phase differential, in phase difference value, carry out response phase spectrum calculation procedure (S750) of calculated response phase spectrum at the mean value mean value of getting it right in the phase difference value in Standard deviation-Range of falling into a trap.
On the other hand, according to the above-mentioned seism processing mechanism of one more embodiment of the present invention, it is characterized in that, also comprise: a response spectra than calculating part 180, its by by comprise with based on first time exciting the frequency domain of the vibration signal of reference sensor that is connected of channel one convert and to convert divided by the frequency domain of the vibration signal comprising the determination sensor be connected with channel two with the measured value of response spectra and the measured value of response spectra is carried out calculated response and composed ratio; Quadratic response spectrum is than calculating part 185, and it to convert divided by the frequency domain of the vibration signal comprising the reference sensor be connected with channel two with the measured value of response spectra and the measured value of response spectra is carried out calculated response and composed and compare by convert by the frequency domain of the vibration signal comprising the determination sensor be connected with the channel one based on second time exciting; Seismograph response obtaining section 190, it is by being multiplied composing than calculating part and quadratic response the response spectra ratio calculated than calculating part by an above-mentioned response spectra and being multiplied by 1/2 square to obtain (seismograph of channel one responds/seismograph of channel two respond).
Now, it is characterized in that, the value obtained (seismograph of the seismograph response/channel two of channel one responds) is multiplied by the foundation vibration value that measures from the sensor be connected with channel two to revise seismograph in above-mentioned seismograph response obtaining section.
Below, be described in detail based on the determination sensor verification system of seismograph of the present invention and the embodiment of method by utilizing.
Fig. 1 is the structural drawing that concise and to the point formation utilizes according to the determination sensor verification system of the seismograph of one embodiment of the invention.
As shown in Figure 1, as the determination sensor verification system utilizing seismograph of the present invention, it is characterized in that, comprising: exciting device 200, it carries out exciting to shaking table; Shaking table 300, its setting is configured with reference sensor 400 and determination sensor 450, is connected with above-mentioned exciting device, and start exciting device time exciting; Signal wire transducer 600, it is for measuring the vibration signal of said reference sensor and determination sensor; Signal amplifier 700, the vibration signal converted in above-mentioned signal wire transducer amplifies by it, and transmits the vibration signal amplified to seismograph; Seismograph 800, it is for measuring the amplification vibration signal transmitted from above-mentioned signal amplifier; Seism processing mechanism 100, it calculates the response spectra of reference sensor and the determination sensor measured at above-mentioned seismograph, the vibration signal of reference sensor is transformed to frequency domain, and after being modified to response spectra, the response spectra of above-mentioned calculating and the response spectra of correction being compared and judges the whether normal of determination sensor.
Reference sensor and determination sensor well tighten together with shaking table upper surface fully, thus the vibration produced at shaking table is not passed on not distorting smoothly.
With reference to Fig. 1, in order to test the reference sensor 400 of numerous species and determination sensor 450, by signal wire transducer 600, for supplying the sensor electrical source supply device 600 of power supply to sensor and the signal of the sensor with low output voltage being zoomed into the signal amplifier 700 being suitable for seismograph 800 and form.
With regard to above-mentioned signal wire transducer, each manufacturing company uses different terminals, therefore needs to change distribution, signal line cable is compatibly inputted seismic recorder, can be defined as signal wire distribution transducer as another term.
Now, such as, in reference sensor or determination sensor, know the response spectra of sensor, or perform test under the hypothesis of carrying out almost identical with theoretical property response spectra movement at this sensor.
Fig. 2 utilizes the block diagram according to the seism processing mechanism of the determination sensor verification system of the seismograph of one embodiment of the invention.
As shown in Figure 2, seism processing mechanism 100 comprises: reference sensor frequency domain transformation component 110, and it obtains the vibration signal of reference sensor, utilizes Fourier transform to make it be transformed to frequency domain; Response spectra correction portion 120, it is for revising response spectra by the frequency spectrum converted by said reference sensor frequency domain transformation component divided by theoretical property response spectra or known response spectra; Sensor judging part 130 of the same race, whether it is the sensor of identical type for judgment standard sensor and determination sensor; Identity transformation portion 140, it, for when reference sensor and determination sensor are not the sensors of identical type, take determination sensor as benchmark, frequency domain use differentiate symbol or integral operation symbol convert, to possess identical analytical unit; Response spectra calculating part 150, it is for when reference sensor and determination sensor are the sensor of identical type, utilizes band-pass filter and Hilbert transform to carry out calculated response spectrum; The whether normal judging part 160 of determination sensor, it judges the whether normal of determination sensor for comparing with the response spectra by the correction of response spectra correction portion the response spectra calculated by above-mentioned response spectra calculating part; End value efferent 170, it is for exporting the end value judged at the whether normal judging part of said determination sensor.
Above-mentioned response spectra correction portion 120 revises response spectra by the theoretical property response spectra that provided divided by manufacturing company by the frequency spectrum converted by reference sensor frequency domain transformation component or known response spectra.
The theoretical property response spectra that the present invention illustrates, referring to the inherent characteristic that the sensor that seismograph sensor manufacturing company manufactures possesses, providing response spectra by providing limit (pole) and zero point (zero) value.
In addition, the response spectra of each sensor manufacturing company directly measured is supplied to user, and the response spectra that known response spectra is referred to the response spectra that manufacturing company supplies or measured by absolute mensuration can become absolute reference sensor.
Now, above-mentioned identity transformation portion 140 performs the function carrying out with can possessing same analytical unit converting, such as may have the accelerometer of acceleration and the velograph of finding speed that measure ground motion, be therefore the analytical unit of unified above-mentioned accelerometer and velograph.
Further, illustrated on instructions of the present invention seismic data means the data represented according to the foundation vibration value of timing.
Fig. 4 represents the process flow diagram utilized according to the determination sensor verification method of the seismograph of one embodiment of the invention.
As shown in Figure 4, utilize the determination sensor verification method of seismograph, it is characterized in that, comprise the following steps: by starting the exciting device oscillating scanning step (S100) that exciting device makes shaking table vibrate; The experiment information obtaining the vibration signal of reference sensor and the determination sensor measured by seismograph in seism processing mechanism obtains step (S200); Reference sensor frequency domain transformation component 110 obtains the vibration signal of reference sensor, utilizes Fourier transform to make it be transformed to the reference sensor frequency domain shift step (S300) of frequency domain; Response spectra correction portion 120 at the frequency domain converted by reference sensor frequency domain transformation component divided by the theoretical property response spectra correction of reference sensor or known response spectra to revise the response spectra correction step (S400) of response spectra; Whether sensor judging part 130 judgment standard sensor of the same race and determination sensor are the sensor determining step (S500) of the same race of the sensor of identical type; When reference sensor and determination sensor are the sensor of identical type, response spectra calculating part 150 utilizes the response spectra calculation procedure (S700) of band-pass filter and Hilbert transform calculated response spectrum; The whether normal judging part of determination sensor 160 is by comparing to the response spectra calculated by response spectra calculating part and the response spectra by the correction of response spectra correction portion the whether normal determining step of whether normal determination sensor (S800) judging determination sensor; The end value that end value efferent 170 exports the end value judged at the whether normal judging part of determination sensor exports step.
Now, judged result in above-mentioned sensor determining step (S500) of the same race, when reference sensor and determination sensor are not the sensors of identical type, it is that benchmark uses differentiate symbol or integral operation symbol to be transformed to the identity transformation step (S600) of identical analytical unit in a frequency domain that identity transformation portion 140 performs with determination sensor.
Be described with reference to Fig. 2 and Fig. 4, in order to verificating sensor, seism processing mechanism 100 comprises: reference sensor frequency domain transformation component 110, response spectra correction portion 120, sensor judging part 130 of the same race, identity transformation portion 140, response spectra calculating part 150, determination sensor normally whether judging part 160 and end value efferent 170.
The course of work is described, makes (S100) shaking table exciting by starting exciting device, obtaining the vibration signal (S200) of reference sensor and the determination sensor measured by seismograph in seism processing mechanism 100.
After this, the reference sensor frequency domain transformation component 110 of seism processing mechanism obtains the vibration signal of reference sensor, utilizes Fourier transform to make it be transformed to frequency domain (S300).
Now, when shaking table performs exciting, exciting source comprises the frequency content of the oscillating region that will obtain.
Such as, when oscillating scanning (sweep) of 0.1Hz to 50Hz is carried out in vibration, perform exciting about 20 seconds.
Thereafter, whether validation test data obtains from seismograph transmission in seism processing mechanism.
Thereafter, utilize Fourier transform that reference sensor data is transformed to frequency domain at reference sensor frequency domain transformation component.
After this, response spectra correction portion 120 revises response spectra (S400) at the frequency domain converted by reference sensor frequency domain transformation component divided by the theoretical property response spectra correction of reference sensor or known response spectra.
After this, whether sensor judging part 130 judgment standard sensor of the same race and determination sensor are the sensor (S500) of identical type, when reference sensor and determination sensor are not the sensors of identical type, it is benchmark that identity transformation portion 140 performs with determination sensor, uses differentiate symbol or integral operation symbol to be transformed to the identity transformation step (S600) of same analytical unit at frequency domain.
That is, take determination sensor as benchmark, use differentiate symbol (iw) or integral operation to accord with (1/iw) at frequency domain and be transformed to same analytical unit.
Now, w represents each frequency, and i represents plural number.
Particularly, when reference sensor be speed, determination sensor be acceleration, carry out differential at the frequency domain of reference sensor data, when reference sensor be acceleration, determination sensor be speed, carry out integration at the frequency domain of reference sensor data.
Further, with regard to response spectra calculating part 150, when reference sensor and determination sensor are the sensor of identical type, band-pass filter and Hilbert transform calculated response spectrum (S700) is utilized.
Again this is specifically described with reference to Fig. 3 and Fig. 5.
After this, normally whether judging part 160 is by comparing whether normal (S800) that judge determination sensor the response spectra calculated by response spectra calculating part and the response spectra by the correction of response spectra correction portion for determination sensor.
After this, end value efferent 170 exports the end value judged at the whether normal judging part of determination sensor, if export the abnormal conclusion of determination sensor, then determines rectification or the repairing of sensor.
Now, the result of the response spectra of calculating itself can also be obtained.
Fig. 3 utilizes the block diagram according to the response spectra calculating part of the determination sensor verification system of the seismograph of one embodiment of the invention.
As shown in Figure 3, above-mentioned response spectra calculating part 150 comprises: real part and imaginary part configuration part 151, it utilizes determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, being real part by band-pass filter information setting, is imaginary part by Hilbert transform information setting; Amplitude and phase calculation portion 152, it, for after adding up to the real part and imaginary part that set by real part and imaginary part configuration part, calculates the amplitude and phase place that change in time; Amplitude extraction portion 153, it is for the time series amplitude of the reference sensor calculated by above-mentioned amplitude and phase calculation portion and determination sensor, only extracts the amplitude of the noise higher than reference sensor or determination sensor itself; Response amplitude spectrum is than calculating part 154, it, for the amplitude extracted by above-mentioned amplitude extraction portion, carrys out calculated response Amplitude spectrum ratio by the time series amplitude calculated amplitude ratio (determination sensor/reference sensor) of aggregated basis sensor and determination sensor; Response phase spectrum calculating part 155, it is for the phase differential (determination sensor phase-reference sensor phase) of Calculation Basis sensor and determination sensor, calculate mean value and the standard deviation value of phase differential, in phase difference value, carry out calculated response phase spectrum at the fall into a trap mean value of the phase difference value of getting it right in Standard deviation-Range of mean value.
Fig. 5 represents the process flow diagram utilized according to the processing procedure of the response spectra calculating part of the determination sensor verification system of the seismograph of one embodiment of the invention.
With reference to Fig. 3 and Fig. 5, above-mentioned response spectra calculation procedure (S700) is described, with regard to response spectra calculation procedure, it is characterized in that, comprise the following steps: real part and imaginary part configuration part 151 utilize determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, being real part by band-pass filter information setting, is real part and the imaginary part setting procedure (S710) of imaginary part by Hilbert transform information setting; After amplitude and phase calculation portion 152 add up to the real part set by real part and imaginary part configuration part and imaginary part, calculate amplitude and the phase calculation step (S720) of amplitude and the phase place changed in time; Amplitude extraction portion 153, for the time series amplitude of the reference sensor calculated by amplitude and phase calculation portion and determination sensor, only extracts the amplitude extraction step (S730) of the amplitude of the noise higher than reference sensor or determination sensor itself; Response amplitude spectrum for the amplitude extracted by amplitude extraction portion, carrys out the response amplitude spectrum of calculated response Amplitude spectrum ratio than calculation procedure (S740) by the time series amplitude calculated amplitude ratio (determination sensor/reference sensor) of aggregated basis sensor and determination sensor than calculating part 154; The phase differential (determination sensor phase-reference sensor phase) of response phase spectrum calculating part 155 Calculation Basis sensor and determination sensor, and calculate mean value and the standard deviation value of phase differential, in phase difference value, carry out response phase spectrum calculation procedure (S750) of calculated response phase spectrum at the mean value mean value of getting it right in the phase difference value in Standard deviation-Range of falling into a trap.
Namely, real part and imaginary part configuration part 151 utilize determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, being real part by band-pass filter information setting, is imaginary part (S710) by Hilbert transform information setting.
As passing through the filtration of bandpass filters (minimum phase delayed filtering device or zero phase filtrator) and utilizing the response spectra production process of Hilbert transform, low-limit frequency calculates maximum frequency 1/ (2X × t) from 1/T (T: overall writing time), it is that 1/T is the most suitable in theory that each frequency band is increased and decreased frequency setting, but consider computing time, such as, when being with passband to be less than 1Hz, band is set as 1.5/T, when more than 1Hz, band is set as 0.25Hz, bandpass filters and Hilbert transform step is performed repeatedly from low-limit frequency to maximum frequency.
After this, amplitude and phase calculation portion 152 calculate the amplitude and phase place (S720) that change in time after adding up to the real part and imaginary part set by real part and imaginary part configuration part.
After this, amplitude extraction portion 153 is relative to the time series amplitude of the reference sensor calculated by amplitude and phase calculation portion and determination sensor, only extract the amplitude (S730) of the noise higher than reference sensor or determination sensor itself, response amplitude spectrum is than calculating part 154 relative to the amplitude extracted by amplitude extraction portion, and the time series amplitude of aggregated basis sensor and determination sensor carrys out calculated amplitude ratio (determination sensor/reference sensor) and calculated response Amplitude spectrum ratio (S740).
After this, the phase differential (determination sensor phase-reference sensor phase) of response phase spectrum calculating part 155 Calculation Basis sensor and determination sensor, calculate the mean value of phase differential and standard deviation value, carry out calculated response phase spectrum (S750) at the fall into a trap mean value of the phase difference value of getting it right in mean value Plays deviation range of phase difference value.
By step as above, obtain the response spectra according to frequency by different frequency.
The method of trying to achieve sensor response spectra is as mentioned above equally applicable to for general earthquake observation station noise and seismological observation seismic data.
Fig. 6 to Fig. 7 is for revising the test executive program figure utilized according to the seismograph correction of the determination sensor verification system of the seismograph of one embodiment of the invention.
First, channel one connects reference sensor, and channel two connects determination sensor, and that perform first exciting source is Fig. 6, and channel one connects determination sensor, and channel two connects reference sensor, and that perform second exciting source is Fig. 7.
Fig. 8 is for revising the block diagram utilized according to the seismograph of the determination sensor verification system of the seismograph of one embodiment of the invention.
Fig. 9 represents the process flow diagram utilized according to the seismograph modification method of the determination sensor verification system of the seismograph of one embodiment of the invention.
Connect channel one and reference sensor, performs exciting (S1000) for the first time after connecting channel two and determination sensor, response spectra than calculating part 180 by by comprise based on first time exciting the frequency domain of vibration signal of the reference sensor be connected with channel one convert and to convert divided by the frequency domain of the vibration signal comprising the determination sensor be connected with channel two with the measured value of response spectra and the measured value of response spectra is carried out calculated response and composed than (S1100).
After this, perform exciting (S1200) after mutual change channel sensor, quadratic response spectrum to convert divided by the frequency domain of the vibration signal comprising the reference sensor be connected with channel two with the measured value of response spectra and the measured value of response spectra is carried out calculated response and composed than (S1300) by being converted by the frequency domain of the vibration signal comprising the determination sensor be connected with the channel one based on second time exciting than calculating part 185.
After this, seismograph response obtaining section 190 obtains being multiplied and carrying out 1/2 square than calculating part and quadratic response spectrum than the response spectra ratio that calculating part calculates by response spectra (seismograph of the seismograph response/channel two of channel one responds) (S1400).
This is described in detail, as follows.
Can utilize
Derive
Now, Z
11(w)=R
1s
au
1(w): based on first time exciting channel one measure frequency domain value
Z
21(w)=R
2s
bu
1(w): based on first time exciting channel two measure frequency domain value
Z
12(w)=R
1s
au
1(w): the frequency domain value measured at the channel one based on second time exciting
Z
22(w)=R
2s
bu
1(w): the frequency domain value measured at the channel two based on second time exciting
But, R
1: a channel record instrument response, R
2: No. two channel record instrument responses
S
a: A sensor responds, S
b: B sensor responds
U
1: exciting for the first time, U
2: second time exciting
Now, the value obtained in above-mentioned seismograph response obtaining section (seismograph of the seismograph response/channel two of channel one responds) is multiplied by the vibration values that measures from the sensor be connected with channel two to revise seismograph.
That is, if take advantage of the record value (R of channel two in the value of above-mentioned derivation
1/ R
2), then can perform the correction to seismograph.
Specifically describe, take advantage of (the seismograph response of the seismograph response/channel two of channel one) in the value of the seismograph drawn from channel two, then the sensor values obtained at channel one and channel two is calculated as the recording responses of same channel one.
The registering instrument value being recorded in each channel is seen at frequency domain, can be considered " (channel record instrument response spectra X sensor response spectra) X (foundation vibration spectrum) ".
Therefore, if try to achieve the response spectra ratio relevant to channel record instrument, the registering instrument obtaining actual channel one responds then the response spectra of also known channel two.
Usually, registering instrument major part is provided as voltage/bit (voltage/bit) or voltage/counting (voltage/count), if try to achieve response spectra ratio, is expressed as the constant value of regulation by different frequency.
The those of ordinary skill of the technical field belonging to the present invention of content as above is appreciated that not change technological thought of the present invention or necessary feature also can be implemented with other concrete forms.Therefore, the embodiment being interpreted as above description is illustrative in all respects, and is not limited to this.
Scope of the present invention more depends on appending claims than above-mentioned detailed description, and the form that should be interpreted as all changes or the distortion of deriving from the meaning of claims and scope and its equivalent concepts is included in scope of the present invention.
Claims (7)
1. utilize a determination sensor verification system for seismograph, it is characterized in that, comprising:
Exciting device (200), it carries out exciting to shaking table;
Shaking table (300), it is provided with reference sensor (400) and determination sensor (450), is connected with above-mentioned exciting device, and start exciting device time exciting;
Signal wire transducer (600), it is for measuring the vibration signal of said reference sensor and determination sensor,
Signal amplifier (700), it amplifies the vibration signal converted in above-mentioned signal wire transducer, and transmits the vibration signal amplified to seismograph;
Seismograph (800), it is for measuring the amplification vibration signal transmitted from above-mentioned signal amplifier;
Seism processing mechanism (100), it calculates the response spectra of reference sensor and the determination sensor measured in above-mentioned seismograph, the vibration signal of reference sensor is transformed to frequency domain, and after being modified to response spectra, the response spectra of above-mentioned calculating and the response spectra of correction are compared and judges the whether normal of determination sensor
Wherein, above-mentioned seism processing mechanism (100) comprising:
Reference sensor frequency domain transformation component (110), it obtains the vibration signal of reference sensor, utilizes Fourier transform to be transformed to frequency domain;
Response spectra correction portion (120), it is for by revising response spectra by the frequency spectrum converted by said reference sensor frequency domain transformation component divided by theoretical property response spectra or known response spectra;
Sensor judging part (130) of the same race, whether it is the sensor of identical type for judgment standard sensor and determination sensor;
Identity transformation portion (140), it is not for when reference sensor and determination sensor are the sensors of identical type, take determination sensor as benchmark, frequency domain use differentiate symbol or integral operation symbol convert, to possess identical analytical unit;
Response spectra calculating part (150), it is for when reference sensor and determination sensor are the sensor of identical type, utilizes band-pass filter and Hilbert transform to carry out calculated response spectrum;
The whether normal judging part of determination sensor (160), it judges the whether normal of determination sensor for comparing with the response spectra by the correction of response spectra correction portion the response spectra calculated by above-mentioned response spectra calculating part;
End value efferent (170), it is for exporting the end value judged at the whether normal judging part of said determination sensor.
2. the determination sensor verification system utilizing seismograph according to claim 1, is characterized in that, above-mentioned response spectra calculating part (150) comprising:
Real part and imaginary part configuration part (151), it utilizes determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, being real part by band-pass filter information setting, is imaginary part by Hilbert transform information setting;
Amplitude and phase calculation portion (152), it, for after adding up to the real part and imaginary part that set by real part and imaginary part configuration part, calculates the amplitude and phase place that change in time;
Amplitude extraction portion (153), it is for the time series amplitude of the reference sensor calculated by above-mentioned amplitude and phase calculation portion and determination sensor, only extracts the amplitude of the noise higher than reference sensor or determination sensor itself;
Response amplitude spectrum is than calculating part (154), it is for the amplitude extracted by above-mentioned amplitude extraction portion, carrys out calculated response spectral amplitude by aggregated basis sensor and the time series amplitude Calculation Basis sensor of determination sensor and the amplitude ratio of determination sensor;
Response phase spectrum calculating part (155), it is for the phase differential of Calculation Basis sensor and determination sensor, calculate mean value and the standard deviation value of phase differential, in phase difference value, carry out calculated response phase spectrum at the fall into a trap mean value of the phase difference value of getting it right in Standard deviation-Range of mean value.
3. the determination sensor verification system utilizing seismograph according to claim 1, is characterized in that, above-mentioned seism processing mechanism also comprises:
A response spectra than calculating part (180), its by by comprise with based on first time exciting the frequency domain of the vibration signal of reference sensor that is connected of channel one convert and to convert divided by the frequency domain of the vibration signal comprising the determination sensor be connected with channel two with the measured value of response spectra and the measured value of response spectra is carried out calculated response and composed ratio;
Quadratic response spectrum is than calculating part (185), and it to convert divided by the frequency domain of the vibration signal comprising the reference sensor be connected with channel two with the measured value of response spectra and the measured value of response spectra is carried out calculated response and composed and compare by convert by the frequency domain of the vibration signal comprising the determination sensor be connected with the channel one based on second time exciting;
Seismograph response obtaining section (190), its by by compose the response spectra that calculates than calculating part than calculating part and quadratic response by an above-mentioned response spectra than be multiplied and the seismograph being multiplied by 1/2 square to obtain channel one respond/seismograph of channel two responds.
4. the determination sensor verification system utilizing seismograph according to claim 3, it is characterized in that, the value obtained is multiplied by the foundation vibration value that measures from the sensor be connected with channel two to revise seismograph in above-mentioned seismograph response obtaining section.
5. utilize a determination sensor verification method for seismograph, it is characterized in that, comprise the following steps:
By starting the exciting device oscillating scanning step (S100) that exciting device makes shaking table vibrate;
The experiment information obtaining the vibration signal of reference sensor and the determination sensor measured by seismograph in seism processing mechanism obtains step (S200);
Reference sensor frequency domain transformation component (110) obtains the vibration signal of reference sensor, utilizes Fourier transform to make it be transformed to the reference sensor frequency domain shift step (S300) of frequency domain;
Response spectra correction portion (120) by the frequency domain that converts by reference sensor frequency domain transformation component divided by the theoretical property response spectra correction of reference sensor or known response spectra to revise the response spectra correction step (S400) of response spectra;
Whether sensor judging part (130) judgment standard sensor of the same race and determination sensor are the sensor determining step (S500) of the same race of the sensor of identical type;
When reference sensor and determination sensor are the sensor of identical type, response spectra calculating part (150) utilizes the response spectra calculation procedure (S700) of band-pass filter and Hilbert transform calculated response spectrum;
The whether normal judging part of determination sensor (160) is by comparing to the response spectra calculated by response spectra calculating part and the response spectra by the correction of response spectra correction portion the whether normal determining step of whether normal determination sensor (S800) judging determination sensor;
The end value that end value efferent (170) exports the end value judged at the whether normal judging part of determination sensor exports step.
6. the determination sensor verification method utilizing seismograph according to claim 5, it is characterized in that, when the result that above-mentioned sensor determining step (S500) of the same race judges shows that reference sensor and determination sensor are not the sensors of identical type, executable unit's transformation component (140) is that benchmark uses differentiate symbol or integral operation symbol to be transformed to the identity transformation step (S600) of identical analytical unit in a frequency domain with determination sensor.
7. the determination sensor verification method utilizing seismograph according to claim 5, is characterized in that, above-mentioned response spectra calculation procedure (S700) comprises the following steps:
Real part and imaginary part configuration part (151) utilize determination sensor information and reference sensor information and executing time domain band-pass filter in the band passband of setting, and after performing Hilbert transform, being real part by band-pass filter information setting, is real part and the imaginary part setting procedure (S710) of imaginary part by Hilbert transform information setting;
After amplitude and phase calculation portion (152) add up to the real part set by real part and imaginary part configuration part and imaginary part, calculate amplitude and the phase calculation step (S720) of amplitude and the phase place changed in time;
Amplitude extraction portion (153), for the time series amplitude of the reference sensor calculated by amplitude and phase calculation portion and determination sensor, only extracts the amplitude extraction step (S730) of the amplitude of the noise higher than reference sensor or determination sensor itself;
Response amplitude spectrum for the amplitude extracted by amplitude extraction portion, is composed than calculation procedure (S740) by the time series amplitude Calculation Basis sensor of aggregated basis sensor and determination sensor with the response amplitude that the amplitude ratio of determination sensor carrys out calculated response Amplitude spectrum ratio than calculating part (154);
The phase differential of response phase spectrum calculating part (155) Calculation Basis sensor and determination sensor, and calculate mean value and the standard deviation value of phase differential, in phase difference value, carry out response phase spectrum calculation procedure (S750) of calculated response phase spectrum at the mean value mean value of getting it right in the phase difference value in Standard deviation-Range of falling into a trap.
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| KR101897688B1 (en) * | 2017-06-12 | 2018-09-12 | 한국지질자원연구원 | Apparatus and method for extracting direction angle of three component of seismometer sensor using cross correlation |
| KR101897687B1 (en) * | 2017-06-12 | 2018-09-12 | 한국지질자원연구원 | Apparatus and method for extracting direction angle of three component of seismometer sensor using frequency spectrum |
| CN107884150B (en) * | 2017-12-22 | 2023-10-03 | 中国地震局工程力学研究所 | Off-line iterative control method for vibrating table based on floor response spectrum |
| CN108287019A (en) * | 2018-02-02 | 2018-07-17 | 浙江恒强科技股份有限公司 | A kind of weaving electric-control system striker sensor lowest vibration response frequency quantitatively detects determination method and device |
| KR102036316B1 (en) * | 2019-04-08 | 2019-10-25 | 한국지질자원연구원 | Apparatus and method for inspecting observation data of seismic station using cross correlation |
| KR102587912B1 (en) * | 2020-11-20 | 2023-10-10 | 한국수력원자력 주식회사 | Method for automatically discriminating earthquuake vibratory motion from erroneous signal record at seismic system of nuclear power plant |
| KR102435436B1 (en) | 2022-02-11 | 2022-08-23 | 한국지질자원연구원 | Apparatus and method for verifying seismic observation data in the field |
| KR102614869B1 (en) * | 2022-12-13 | 2023-12-20 | 한국지질자원연구원 | System and method of standardization of local event detection capability of seismological observatory |
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