CN106225917A - Vibration signal acquisition device and signal processing method - Google Patents
Vibration signal acquisition device and signal processing method Download PDFInfo
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- CN106225917A CN106225917A CN201610868792.3A CN201610868792A CN106225917A CN 106225917 A CN106225917 A CN 106225917A CN 201610868792 A CN201610868792 A CN 201610868792A CN 106225917 A CN106225917 A CN 106225917A
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- signal
- acceleration
- frequency
- resampling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of vibration signal acquisition device and signal processing method, relate to signal processing technology field, and solved is the technical problem reducing cost.This device includes vibrating sensor, range switch circuit, frequency overlapped-resistable filter, analog-digital converter, microprocessor；The source signal input of range switch circuit received by the induced signal outfan of described vibrating sensor, the signal output part of range switch circuit receives the source signal input of frequency overlapped-resistable filter, the signal output part of frequency overlapped-resistable filter receives the input end of analog signal of analog-digital converter, and the digital signal output end mouth of analog-digital converter receives the FPDP of microprocessor.The device and method that the present invention provides, hardware circuit is simple, it is achieved low cost.
Description
Technical field
The present invention relates to electricity field, particularly relate to vibration signals collecting technology, particularly a kind of vibration signals collecting dress
Put and signal processing method.
Background technology
The vibration signal produced when being run by equipment, can know equipment working condition, and the collection of equipment vibrating signal is all
Being realized by vibrating sensor (acceleration transducer), the vibration signal that vibrating sensor is gathered needs through an integration
Obtaining rate signal, quadratic integral obtains displacement signal, in addition it is also necessary to be filtered processing by filter circuit.But acceleration,
Different frequency response requirements is there is in speed, effective frequency range of displacement signal along with equipment rotating speed or the difference of operating mode.Example
If acceleration signal generally effectively frequency range is 3Hz～5kHz, speed is 3Hz～1kHz, and displacement is 3Hz～500Hz.And existing shake
In dynamic signal pickup assembly, the high pass filter in filter circuit, low pass filter, frequency overlapped-resistable filter are all by hardware circuit
Realizing, when there is multiple frequency band demand when, hardware circuit becomes extremely complex, and it is higher that it is implemented as this.
Summary of the invention
For defect present in above-mentioned prior art, the technical problem to be solved is to provide a kind of hardware electricity
Road is simple, it is achieved the vibration signal acquisition device of low cost and signal processing method.
In order to solve above-mentioned technical problem, a kind of vibration signal acquisition device provided by the present invention, it is characterised in that: bag
Include vibrating sensor, range switch circuit, frequency overlapped-resistable filter, analog-digital converter, microprocessor；
The induced signal outfan of described vibrating sensor receives the source signal input of range switch circuit, range switch circuit
Signal output part receive the source signal input of frequency overlapped-resistable filter, the signal output part of frequency overlapped-resistable filter is received modulus and is turned
The input end of analog signal of parallel operation, the digital signal output end mouth of analog-digital converter receives the FPDP of microprocessor.
The signal processing method of vibration signal acquisition device provided by the present invention, it is characterised in that: utilize vibrating sensing
The mechanical oscillation signal of destination object is converted to signal of telecommunication S1 by device, and first by range switch circuit, this signal of telecommunication S1 is pressed setting
Range be amplified, then carried out low-pass filtering by frequency overlapped-resistable filter, be converted to digital signal by analog-digital converter the most again
Microprocessor is sent into after S2；Export after this digital signal S2 being implemented software filtering by microprocessor again；
The process step of the digital signal S2 that analog-digital converter is sent into by microprocessor is as follows:
1) signal S2 is implemented software high-pass filtering, obtain acceleration signal S31；
2) acceleration signal S31 is carried out an integration and obtain rate signal S32；
3) rate signal S32 is carried out quadratic integral and obtain displacement signal S33；
4) acceleration signal S31, rate signal S32, displacement signal S33 are implemented software low-pass filtering, obtain acceleration high frequency
Filtering signal S411, acceleration low frequency filtered signal S412, pie slice signal S42, displacement filtering signal S43；
5) to acceleration High frequency filter signal S411, acceleration low frequency filtered signal S412, pie slice signal S42, displacement filter
Ripple signal S43 implements resampling, obtains acceleration resampling high-frequency signal S511, acceleration resampling low frequency signal S512, speed
Degree resampling signal S52, displacement resampling signal S53；
Wherein, the resampling frequency to acceleration High frequency filter signal S411 is 51.2kHz, to acceleration low frequency filtered signal
The resampling frequency of S412 is 12.8KHz, and the resampling frequency to pie slice signal S42 is 2.56Khz, to displacement filtering letter
The resampling frequency of number S43 is 1.28kHz；
6) after acceleration resampling high-frequency signal S511 is demodulated into the low frequency acceleration envelope signal of 0～1kHz, together with acceleration
Degree resampling low frequency signal S512, speed resampling signal S52, displacement resampling signal S53, defeated after implementing FFT in the lump
Go out.
The vibration signal acquisition device of present invention offer and signal processing method, use software filtering method to realize high pass
Filtering, low-pass filtering, thus effectively reduce filter circuit required device, reduce the complexity of filter circuit, there is hardware
Circuit is simple, it is achieved the feature of low cost；And filter circuit decreases the electrical noise interference that device introduces after simplifying, effectively
Improve precision and the resolution of small-signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the vibration signal acquisition device of the embodiment of the present invention；
Fig. 2 is in the vibration signal acquisition device of the embodiment of the present invention, and the theory diagram of software filtering implemented by microprocessor.
Detailed description of the invention
Illustrate embodiments of the invention are described in further detail below in conjunction with accompanying drawing, but the present embodiment is not used to limit
The present invention processed, the analog structure of every employing present invention and similar change thereof, protection scope of the present invention, the present invention all should be listed in
In pause mark all represent the relation of sum.
As it is shown in figure 1, a kind of vibration signal acquisition device that the embodiment of the present invention is provided, it is characterised in that: include shaking
Dynamic sensor, range switch circuit, frequency overlapped-resistable filter, analog-digital converter, microprocessor；
The induced signal outfan of described vibrating sensor receives the source signal input of range switch circuit, range switch circuit
Signal output part receive the source signal input of frequency overlapped-resistable filter, the signal output part of frequency overlapped-resistable filter is received modulus and is turned
The input end of analog signal of parallel operation, the digital signal output end mouth of analog-digital converter receives the FPDP of microprocessor.
In the embodiment of the present invention, described range switch circuit, frequency overlapped-resistable filter are prior art.
The signal processing method of the vibration signal acquisition device of the embodiment of the present invention, it is characterised in that: utilize vibrating sensing
The mechanical oscillation signal of destination object is converted to signal of telecommunication S1 by device, and first by range switch circuit, this signal of telecommunication S1 is pressed setting
Range be amplified, then carried out low-pass filtering by frequency overlapped-resistable filter, be converted to digital signal by analog-digital converter the most again
Microprocessor is sent into after S2；Export after this digital signal S2 being implemented software filtering by microprocessor again；
As in figure 2 it is shown, the process step of digital signal S2 that analog-digital converter is sent into by microprocessor is as follows:
1) signal S2 is implemented software high-pass filtering, obtain acceleration signal S31；
2) acceleration signal S31 is carried out an integration and obtain rate signal S32；
3) rate signal S32 is carried out quadratic integral and obtain displacement signal S33；
4) acceleration signal S31, rate signal S32, displacement signal S33 are implemented software low-pass filtering, obtain acceleration high frequency
Filtering signal S411, acceleration low frequency filtered signal S412, pie slice signal S42, displacement filtering signal S43；
5) to acceleration High frequency filter signal S411, acceleration low frequency filtered signal S412, pie slice signal S42, displacement filter
Ripple signal S43 implements resampling, obtains acceleration resampling high-frequency signal S511, acceleration resampling low frequency signal S512, speed
Degree resampling signal S52, displacement resampling signal S53；
Wherein, the resampling frequency to acceleration High frequency filter signal S411 is 51.2kHz, to acceleration low frequency filtered signal
The resampling frequency of S412 is 12.8KHz, and the resampling frequency to pie slice signal S42 is 2.56Khz, to displacement filtering letter
The resampling frequency of number S43 is 1.28kHz；
6) after acceleration resampling high-frequency signal S511 is demodulated into the low frequency acceleration envelope signal of 0～1kHz, together with acceleration
Degree resampling low frequency signal S512, speed resampling signal S52, displacement resampling signal S53, implement in quick Fu of FFT(in the lump
Leaf) conversion after export.
Claims (2)
1. a vibration signal acquisition device, it is characterised in that: include vibrating sensor, range switch circuit, anti-aliasing filter
Device, analog-digital converter, microprocessor；
The induced signal outfan of described vibrating sensor receives the source signal input of range switch circuit, range switch circuit
Signal output part receive the source signal input of frequency overlapped-resistable filter, the signal output part of frequency overlapped-resistable filter is received modulus and is turned
The input end of analog signal of parallel operation, the digital signal output end mouth of analog-digital converter receives the FPDP of microprocessor.
The signal processing method of vibration signal acquisition device the most according to claim 1, it is characterised in that: utilize vibration to pass
The mechanical oscillation signal of destination object is converted to signal of telecommunication S1 by sensor, and by this signal of telecommunication S1 first by range switch circuit by setting
Fixed range is amplified, then is carried out low-pass filtering by frequency overlapped-resistable filter, is converted to numeral letter by analog-digital converter the most again
Microprocessor is sent into after number S2；Export after this digital signal S2 being implemented software filtering by microprocessor again；
The process step of the digital signal S2 that analog-digital converter is sent into by microprocessor is as follows:
1) signal S2 is implemented software high-pass filtering, obtain acceleration signal S31；
2) acceleration signal S31 is carried out an integration and obtain rate signal S32；
3) rate signal S32 is carried out quadratic integral and obtain displacement signal S33；
4) acceleration signal S31, rate signal S32, displacement signal S33 are implemented software low-pass filtering, obtain acceleration high frequency
Filtering signal S411, acceleration low frequency filtered signal S412, pie slice signal S42, displacement filtering signal S43；
5) to acceleration High frequency filter signal S411, acceleration low frequency filtered signal S412, pie slice signal S42, displacement filter
Ripple signal S43 implements resampling, obtains acceleration resampling high-frequency signal S511, acceleration resampling low frequency signal S512, speed
Degree resampling signal S52, displacement resampling signal S53；
Wherein, the resampling frequency to acceleration High frequency filter signal S411 is 51.2kHz, to acceleration low frequency filtered signal
The resampling frequency of S412 is 12.8KHz, and the resampling frequency to pie slice signal S42 is 2.56Khz, to displacement filtering letter
The resampling frequency of number S43 is 1.28kHz；
6) after acceleration resampling high-frequency signal S511 is demodulated into the low frequency acceleration envelope signal of 0～1kHz, together with acceleration
Degree resampling low frequency signal S512, speed resampling signal S52, displacement resampling signal S53, defeated after implementing FFT in the lump
Go out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868792.3A CN106225917A (en) | 2016-09-30 | 2016-09-30 | Vibration signal acquisition device and signal processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868792.3A CN106225917A (en) | 2016-09-30 | 2016-09-30 | Vibration signal acquisition device and signal processing method |
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| CN106225917A true CN106225917A (en) | 2016-12-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443522A (en) * | 2018-12-10 | 2019-03-08 | 江苏华创光电科技有限公司 | A kind of conditioning of vibration signal and data converter |
| CN113945401A (en) * | 2021-08-27 | 2022-01-18 | 华能（上海）电力检修有限责任公司 | Vibration detection system of transfer machine equipment based on unsupervised learning |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4181280B2 (en) * | 1999-08-25 | 2008-11-12 | 株式会社オービット | Vibration monitoring alarm system, computer constituting the system, and computer readable medium having recorded vibration monitoring alarm program |
| CN102798459A (en) * | 2012-08-10 | 2012-11-28 | 上海卫星工程研究所 | Satellite ground micro-vibration test system |
| CN202710599U (en) * | 2012-06-13 | 2013-01-30 | 石家庄铁路职业技术学院 | Low-frequency vibration acceleration transducer system based on MEMS technology |
| CN103196407A (en) * | 2012-01-09 | 2013-07-10 | 中联重科股份有限公司 | Method, device and system for vibration displacement measurement of cantilever crane of pump truck and engineering machinery device |
| CN204128682U (en) * | 2014-11-19 | 2015-01-28 | 中国人民解放军总参谋部工程兵科研三所 | Can self-alignment networking type wireless vibration tester |
-
2016
- 2016-09-30 CN CN201610868792.3A patent/CN106225917A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4181280B2 (en) * | 1999-08-25 | 2008-11-12 | 株式会社オービット | Vibration monitoring alarm system, computer constituting the system, and computer readable medium having recorded vibration monitoring alarm program |
| CN103196407A (en) * | 2012-01-09 | 2013-07-10 | 中联重科股份有限公司 | Method, device and system for vibration displacement measurement of cantilever crane of pump truck and engineering machinery device |
| CN202710599U (en) * | 2012-06-13 | 2013-01-30 | 石家庄铁路职业技术学院 | Low-frequency vibration acceleration transducer system based on MEMS technology |
| CN102798459A (en) * | 2012-08-10 | 2012-11-28 | 上海卫星工程研究所 | Satellite ground micro-vibration test system |
| CN204128682U (en) * | 2014-11-19 | 2015-01-28 | 中国人民解放军总参谋部工程兵科研三所 | Can self-alignment networking type wireless vibration tester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443522A (en) * | 2018-12-10 | 2019-03-08 | 江苏华创光电科技有限公司 | A kind of conditioning of vibration signal and data converter |
| CN113945401A (en) * | 2021-08-27 | 2022-01-18 | 华能（上海）电力检修有限责任公司 | Vibration detection system of transfer machine equipment based on unsupervised learning |
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