CN205232235U - Acoustic signals detection device - Google Patents
Acoustic signals detection device Download PDFInfo
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- CN205232235U CN205232235U CN201520928049.3U CN201520928049U CN205232235U CN 205232235 U CN205232235 U CN 205232235U CN 201520928049 U CN201520928049 U CN 201520928049U CN 205232235 U CN205232235 U CN 205232235U
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Abstract
The utility model discloses an acoustic signals detection device. A detect that is used for short distance drilling rod sound wave communication signals in the pit, acoustic signals detection device includes aboveground device and installs in the pit, the piezoelectric sensor of device arrangement on signal generator, vibration exciter, pipeline and pipeline that the electricity is connected in the pit. The utility model provides an acoustic signals detection device utilizes the resonance effect at random among the nonlinear system to detect the sound wave small signal under the strong noise, can solve the problem that can not accomplish in the linear system technique.
Description
Technical field
The utility model relates to sound wave communication signal field, especially, relates to a kind of acoustic signals checkout gear.
Background technology
Petroleum gas is the energy indispensable in our productive life, and rotary steerable drilling technology is the new technology grown up in recent years, be also the focus studied in the world at present, but the automated job of downhole system becomes the difficult problem that must capture.The major way of down-hole short range communication is divided into two classes, and one is sound wave communication, and one is electromagnetic communication.Electromagnetic communication can transmission data at a high speed, and it is not high to drilling fluid quality, slush pump flow, the stressed whether conditional request such as even, but due to signal, transmission speed is fast in the earth formation, the rate of decay slow, cause electromagnetic transmission method of measurement to be only suitable for using in shallow well, and low wave frequency is close to the earth frequency, be subject to the impact of electric equipment and formation resistivity, make troubles to input and reception.Sound wave communication technology is a kind of wireless transmission method that new development is in recent years got up.Down-hole short distance sound wave communication technology is based on the communication theory of elastic wave in mounting medium.Utilize machinery to produce exciting and launch sound wave to drill string, rock etc., receive the acoustic signals modulated by media physical characteristics via one section of transmission range, carry out analysis project problem by parameters such as the frequency amplitude of observation analysis waveform and wavelength.Acoustic signals can propagate the elastic wave signal that dominant frequency is 0.4 to 2kHz, thus has stronger carrier capability.
For the test problems of acoustic signals, adopt traditional linearity test method, as linear filtering, the method for the restraint speckle such as Linear Amplifer can realize the detection to signal, but when signal is consistent with noise frequency or noise has flooded signal, linear method detection signal is difficult to realize.
Stochastic Resonance Theory does not work as unwanted signals process noise, but utilizes the energy measuring small-signal of noise.In brief, accidental resonance is exactly under certain nonlinear condition, and the non linear system caused by Weak periodic signal and noise cooperation strengthens the phenomenon periodically exported.
Utility model content
In order to solve the technical problem of above-mentioned acoustic signals checkout gear, the utility model provides a kind of acoustic signals checkout gear.
The acoustic signals checkout gear that the utility model provides comprises the detection for down-hole short distance drilling rod sound wave communication signal, described acoustic signals checkout gear comprises aboveground device and downhole hardware, and described downhole hardware comprises the piezoelectric transducer that the signal generator of electrical connection, vibration generator, pipeline and pipeline are settled.
In a kind of preferred embodiment of the acoustic signals checkout gear provided at the utility model, described aboveground device comprises the charge amplifier of electrical connection, white Gaussian noise generator, accidental resonance checkout gear and oscilloscope.
In a kind of preferred embodiment of the acoustic signals checkout gear provided at the utility model, the quantity of piezoelectric transducer is two, connects described charge amplifier respectively.
In a kind of preferred embodiment of the acoustic signals checkout gear provided at the utility model, described accidental resonance checkout gear comprises the first detection module and second and detects module, described first detection module comprises the first data collecting card, the first computer, single-chip microcomputer, the digital regulation resistance of data cube computation successively, and described digital regulation resistance and described second detects module data cube computation.
In a kind of preferred embodiment of the acoustic signals checkout gear provided at the utility model, described second detects module comprises the accidental resonance analog circuit of data cube computation successively, the second data collecting card and second computer.
In a kind of preferred embodiment of the acoustic signals checkout gear provided at the utility model, described digital regulation resistance and described accidental resonance analog circuit data cube computation.
Compared to prior art, the acoustic signals checkout gear that the utility model provides utilizes the accidental resonance effect in non linear system to detect the sound wave small-signal under very noisy interference, can solve the problem that can not complete in linear system technology.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structured flowchart of a kind of embodiment of the acoustic signals checkout gear that the utility model provides;
Fig. 2 is the structured flowchart of the accidental resonance checkout gear of the checkout gear of acoustic signals shown in Fig. 1.
Embodiment
Be clearly and completely described to the technical scheme in the utility model embodiment below, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1 and Fig. 2, the utility model discloses a kind of acoustic signals checkout gear, the acoustic signals checkout gear that the utility model provides comprises the detection for down-hole short distance drilling rod sound wave communication signal, described acoustic signals checkout gear comprises aboveground device and downhole hardware, and described downhole hardware comprises the piezoelectric transducer 7 that the signal generator 1 of electrical connection, vibration generator 2, pipeline 3 and pipeline are settled.
Described aboveground device comprises the charge amplifier 4 of electrical connection, white Gaussian noise generator 8, accidental resonance checkout gear 5 and oscilloscope 6.
Preferably, the quantity of described piezoelectric transducer 7 is two, connects described charge amplifier 4 respectively.
Described accidental resonance checkout gear 5 comprises the first detection module and second and detects module, described first detection module comprises the first data collecting card 51, first computer 52, single-chip microcomputer 53, the digital regulation resistance 54 of data cube computation successively, and described digital regulation resistance 54 detects module data cube computation with described second.
Described second detection module comprises accidental resonance analog circuit 55, second data collecting card 56 and the second computer 57 of data cube computation successively.
Described digital regulation resistance 54 and described accidental resonance analog circuit 55 data cube computation.
Described signal generator 1 produces sinusoidal signal in testing and acts on vibration generator 2, stable drilling process in drilling experiment under simulation well.
Code signal is converted into the different mechanical movement of frequency by described vibration generator 2, and excitation drilling rod produces mechanical oscillation, and then transmission of signal.Described vibration generator 2 is divided into radial excitation and axial excitation by different putting positions.
Described charge amplifier 4 is for amplification signal.This signal of telecommunication is the signal of telecommunication of being come by piezoelectric transducer conversion by sound wave communication signal.
Described aboveground device also comprises white Gaussian noise generator 8, in described accidental resonance checkout gear 5, measured signal is the drilling well signal that described white Gaussian noise generator 8 produces white Gaussian noise signal and charge amplifier 4 and sends, while two signal input accidental resonance checkout gears 5, the first computer 52 is inputted after sampling with the first data collecting card 51, a is calculated according to optimum Match stochastic resonance method, the value of b (is specially: a in Langevin equation, the value of b), and by serial ports to single-chip microcomputer 53, the tap position of control X9241, make it to try one's best and a, b conforms to.After accidental resonance effect produces, sinusoidal signal and noise acting in conjunction, make signal export the strongest.
Accidental resonance analogue system exports after the second data collecting card 56 is sampled, and input second computer 57 shows its result, inputs to oscilloscope 6 simultaneously, reads waveform, understands underground work situation.
What the white Gaussian noise that described white Gaussian noise generator 8 produces was simulated is the noise signal that can run in downhole drill process, therefore, in the present embodiment, for white Gaussian noise.
In sum, the acoustic signals checkout gear that the utility model provides utilizes the accidental resonance effect in non linear system to detect the sound wave small-signal under very noisy interference, can solve the problem that can not complete in linear system technology.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included within scope of patent protection of the present utility model.
Claims (6)
1. an acoustic signals checkout gear, for the detection of down-hole short distance drilling rod sound wave communication signal, it is characterized in that, described acoustic signals checkout gear comprises aboveground device and downhole hardware, and described downhole hardware comprises the piezoelectric transducer that the signal generator of electrical connection, vibration generator, pipeline and pipeline are settled.
2. acoustic signals checkout gear according to claim 1, is characterized in that, described aboveground device comprises the charge amplifier of electrical connection, white Gaussian noise generator, accidental resonance checkout gear and oscilloscope.
3. acoustic signals checkout gear according to claim 2, is characterized in that, the quantity of piezoelectric transducer is two, connects described charge amplifier respectively.
4. acoustic signals checkout gear according to claim 2, it is characterized in that, described accidental resonance checkout gear comprises the first detection module and second and detects module, described first detection module comprises the first data collecting card, the first computer, single-chip microcomputer, the digital regulation resistance of data cube computation successively, and described digital regulation resistance and described second detects module data cube computation.
5. acoustic signals checkout gear according to claim 4, is characterized in that, described second detects module comprises the accidental resonance analog circuit of data cube computation successively, the second data collecting card and second computer.
6. acoustic signals checkout gear according to claim 5, is characterized in that, described digital regulation resistance and described accidental resonance analog circuit data cube computation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520928049.3U CN205232235U (en) | 2015-11-20 | 2015-11-20 | Acoustic signals detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520928049.3U CN205232235U (en) | 2015-11-20 | 2015-11-20 | Acoustic signals detection device |
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| Publication Number | Publication Date |
|---|---|
| CN205232235U true CN205232235U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520928049.3U Expired - Fee Related CN205232235U (en) | 2015-11-20 | 2015-11-20 | Acoustic signals detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205106A (en) * | 2016-06-29 | 2016-12-07 | 北京智能管家科技有限公司 | Intelligent mobile device based on acoustics and moving method, location moving method |
| CN110799727A (en) * | 2017-06-26 | 2020-02-14 | Hrl实验室有限责任公司 | System and method for generating an output of a downhole inertial measurement unit |
-
2015
- 2015-11-20 CN CN201520928049.3U patent/CN205232235U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205106A (en) * | 2016-06-29 | 2016-12-07 | 北京智能管家科技有限公司 | Intelligent mobile device based on acoustics and moving method, location moving method |
| CN110799727A (en) * | 2017-06-26 | 2020-02-14 | Hrl实验室有限责任公司 | System and method for generating an output of a downhole inertial measurement unit |
| CN110799727B (en) * | 2017-06-26 | 2023-06-27 | Hrl实验室有限责任公司 | System and method for generating output to a borehole inertia measurement unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20161120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |