CN109471160A - The moving-coil detector of velocity and acceleration is detected simultaneously - Google Patents
The moving-coil detector of velocity and acceleration is detected simultaneously Download PDFInfo
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- CN109471160A CN109471160A CN201811443779.9A CN201811443779A CN109471160A CN 109471160 A CN109471160 A CN 109471160A CN 201811443779 A CN201811443779 A CN 201811443779A CN 109471160 A CN109471160 A CN 109471160A
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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
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
- G01V1/182—Geophones with moving coil
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Abstract
The invention discloses a kind of moving-coil detectors for detecting velocity and acceleration simultaneously.A kind of moving-coil detector detecting velocity and acceleration simultaneously of the invention, based on traditional traditional moving-coil detector structure, two big plate electrodes are placed above and below moving-coil movable part, as dynamic condenser, one flat plate electrode is respectively placed as fixed plate in the inside top and bottom of shell, a capacitor is respectively formed up and down in moving-coil in this way, constitutes the structure of capacitive accelerometer；One piece of capacitor plate is also respectively placed as movable plate electrode in two sides of moving-coil, capacitor plate is also placed at corresponding outer casing inner wall position and makees beneficial effects of the present invention: the two-parameter acquisition to the velocity and acceleration of same receiving point can be achieved and receive, it can detecte small-signal, the propagation characteristic of finer research seismic wave, improves surveying accuracy；System structure is simple, high sensitivity.For fixed plate, so that moving-coil side forms two capacitors；Upper and lower capacitor is accessed into subsequent detection circuit.
Description
Technical field
The present invention relates to detection fields, and in particular to a kind of moving-coil detector for detecting velocity and acceleration simultaneously.
Background technique
Geophone is the sensor special for seismic prospecting, and effect is to be converted to the mechanical oscillation of seismic wave
Electric signal is widely used in geophysical exploration, the forecast analysis research of the natural calamities such as earthquake, tsunami, frontier defense monitoring, iron
The safety monitoring of road, bridge, tunnel, building etc. and archaeological research etc..Seismic exploration is buried by subterranean deposit
The factors such as depth is big, structural configuration is complicated and changeable influence so that the received all kinds of echoes of earth's surface have weak output signal, bandwidth,
The features such as frequency content is enriched, it is desirable that required geophone has high-resolution, broadband, Larger Dynamic range etc. from performance
Index realizes low-power consumption, microminaturization, portable, height intelligence, anti-high and low-temp, anti-radiation etc. on environmental suitability.As
Seismic instrument receives the first step of record seismic signal, and wave detector should have higher sensitivity, enough frequency bands and big dynamic
Range, otherwise seismic instrument is superior again, is also unable to get the seismic data of high quality.Using a wide range of arrangement wave detector, it is long when
Between the faint seismic signal in observation underground, and inhibit surface noise using unique seismic data processing technique, improve signal-to-noise ratio,
To accurately multiply Earth tectonic information.
Currently, the wave detector used in exploration market is many kinds of, divides according to working principle, can be mainly divided into moving-coil
Formula, piezoelectric ceramic type, microelectron-mechanical (MEMS) and fibre optical sensor etc..
By land using at most in seismic prospecting, most popular is moving-coil geophone.Moving-coil geophone is by shell, magnetic
The moving coil composition of iron and suspension between, its working principle determine that the volume of this wave detector generally compares
Greatly.Moving-coil geophone has been applied very extensive in field of seismic exploration, and the product of the type is using coasting body permanent
The principle of cutting magnetic induction line in the high-intensity magnetic field that magnet provides, can generate induced electromotive force when the earth vibrates, defeated because of wave detector
It is directly proportional to coil to perform relative motion speed to magnet for voltage out, therefore moving-coil geophone is also known as velocity detector.This detection
Device has the characteristics that self-powered, structure are simple, performance is stable, low in cost, is the widest seismic exploration of current domestic application
Detection, currently, the wave detector natural frequency for seismic prospecting is mostly in 10Hz or more.
There are following technical problems for traditional technology:
Traditional detector only detects speed amount.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of moving-coil detectors for detecting velocity and acceleration simultaneously, can be real
Now the two-parameter acquisition of the velocity and acceleration of same receiving point is received, may make follow-up data handle and analyze in speed and
The different physical quantities field of the same receiving point displacement of acceleration two descriptions carries out, and carries out analysis comparison, improves signal-to-noise ratio,
Small-signal is detected, for the propagation characteristic of finer research seismic wave, surveying accuracy is improved and is of great significance.
In order to solve the above-mentioned technical problems, the present invention provides a kind of moving-coil detections for detecting velocity and acceleration simultaneously
Device places two big plate electrodes based on traditional traditional moving-coil detector structure above and below moving-coil movable part, as dynamic
Capacitor, the inside top and bottom of shell respectively place one flat plate electrode as fixed plate, form one in each up and down of moving-coil in this way
Capacitor constitutes the structure of capacitive accelerometer；One piece of capacitor plate is also respectively placed as movable plate electrode in two sides of moving-coil,
Also capacitor plate is placed at corresponding outer casing inner wall position as fixed plate, so that moving-coil side forms two capacitors.
Upper and lower capacitor is accessed into subsequent detection circuit, when without extraneous acceleration, capacitance difference in one of the embodiments,
It is worth constant, when there is acceleration generation, capacitive differential is converted into voltage value using transformer bridge circuit, utilizes output voltage
It is directly proportional with acceleration, acceleration value can be obtained by measuring output voltage.
By the capacitor up and down to electric to access subsequent detection with left and right capacitor when using in one of the embodiments,
The detection of the acceleration in two mutually perpendicular directions is realized on road, is measured while completion to acceleration and speed.
After detecting in one of the embodiments, by removing electrical noise, the algorithm for improving signal-to-noise ratio is used.
Beneficial effects of the present invention:
The two-parameter acquisition to the velocity and acceleration of same receiving point can be achieved to receive, can detecte small-signal, more
The propagation characteristic for adding fine research seismic wave, improves surveying accuracy；System structure is simple, high sensitivity.
Detailed description of the invention
Fig. 1 is the schematic illustration of the moving-coil geophone in background technique.
Fig. 2 is the schematic illustration of moving-coil detector that is of the invention while detecting velocity and acceleration.
Fig. 3 is that the capacitor plate in moving-coil detector that is of the invention while detecting velocity and acceleration generates the subsequent electricity of signal
Road system block diagram.
Fig. 4 is the transformer type circuit diagram in moving-coil detector that is of the invention while detecting velocity and acceleration.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Moving-coil detector that is a kind of while detecting velocity and acceleration, based on traditional traditional moving-coil detector structure,
Moving-coil movable part places two big plate electrodes up and down, and as dynamic condenser, the inside top and bottom of shell are respectively placed one piece and put down
Plate electrode respectively forms a capacitor in moving-coil so up and down, constitutes the structure of capacitive accelerometer as fixed plate；Dynamic
One piece of capacitor plate is also respectively placed as movable plate electrode in two sides of circle, also places capacitor plate at corresponding outer casing inner wall position
As fixed plate, so that moving-coil side forms two capacitors.
Upper and lower capacitor is accessed into subsequent detection circuit, when without extraneous acceleration, capacitance difference in one of the embodiments,
It is worth constant, when there is acceleration generation, capacitive differential is converted into voltage value using transformer bridge circuit, utilizes output voltage
It is directly proportional with acceleration, acceleration value can be obtained by measuring output voltage.
By the capacitor up and down to electric to access subsequent detection with left and right capacitor when using in one of the embodiments,
The detection of the acceleration in two mutually perpendicular directions is realized on road, is measured while completion to acceleration and speed.
After detecting in one of the embodiments, by removing electrical noise, the algorithm for improving signal-to-noise ratio is used.
Beneficial effects of the present invention:
The two-parameter acquisition to the velocity and acceleration of same receiving point can be achieved to receive, can detecte small-signal, more
The propagation characteristic for adding fine research seismic wave, improves surveying accuracy；System structure is simple, high sensitivity.
It is as shown in Figure 1 traditional moving-coil detector structure, which only detects the sense of inductance coil generation
Answer voltage.The present invention proposes new patent of invention on the basis of traditional structure.
Two big plate electrodes are placed above and below moving-coil movable part, as dynamic condenser, the inside top and bottom of shell are each
One flat plate electrode is placed as fixed plate, a capacitor is respectively formed up and down in moving-coil in this way, constitutes capacitive accelerometer
Structure.The part moved so not only can detecte the voltage change of coil, also can detecte the variation of capacitor.Similarly, exist
One piece of capacitor plate is also respectively placed as movable plate electrode in two sides of moving-coil, also places condenser paper at corresponding outer casing inner wall position
Plate is as fixed plate, so that moving-coil side forms two capacitors, forms structure as shown in Figure 2 (intermediate part: moving-coil, outside
Part: electrode plate), upper and lower capacitor is accessed into subsequent detection circuit (Fig. 3), citing, such as by capacitor C11, C12 accesses subsequent
Detection circuit, when without extraneous acceleration, capacitive differential is constant, when there is acceleration generation, utilizes transformer bridge circuit (figure
4) capacitive differential is converted into voltage value, it is directly proportional using output voltage and acceleration, it can be obtained by measuring output voltage
Acceleration value, to subsequent detection circuit is accessed, realizes upper and lower capacitor mutual to left and right capacitor when the present invention program uses
The detection of acceleration in vertical both direction improves the algorithm of signal-to-noise ratio later by removal electrical noise, completes to adding
It is measured while speed and speed.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (4)
1. a kind of moving-coil detector for detecting velocity and acceleration simultaneously, special based on traditional traditional moving-coil detector structure
Sign is, two big plate electrodes is placed above and below moving-coil movable part, as dynamic condenser, the inside top and bottom of shell are respectively put
One flat plate electrode is set as fixed plate, a capacitor is respectively formed up and down in moving-coil in this way, constitutes capacitive accelerometer
Structure；One piece of capacitor plate is also respectively placed as movable plate electrode in two sides of moving-coil, is also put at corresponding outer casing inner wall position
Capacitor plate is set as fixed plate, so that moving-coil side forms two capacitors.
2. the moving-coil detector as described in claim 1 for detecting velocity and acceleration simultaneously, which is characterized in that by upper and lower capacitor
Subsequent detection circuit is accessed, when without extraneous acceleration, capacitive differential is constant, when there is acceleration generation, utilizes transformer bridge
Capacitive differential is converted to voltage value by formula circuit, directly proportional using output voltage and acceleration, by measuring output voltage
Obtain acceleration value.
3. the moving-coil detector as described in claim 1 for detecting velocity and acceleration simultaneously, which is characterized in that by institute when use
It states capacitor up and down and, to subsequent detection circuit is accessed, realizes the acceleration in two mutually perpendicular directions to left and right capacitor
Detection measures while completion to acceleration and speed.
4. the moving-coil detector as claimed in claim 3 for detecting velocity and acceleration simultaneously, which is characterized in that after detection,
By removing electrical noise, the algorithm for improving signal-to-noise ratio is used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443779.9A CN109471160B (en) | 2018-11-29 | 2018-11-29 | Moving coil detector for simultaneously detecting speed and acceleration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443779.9A CN109471160B (en) | 2018-11-29 | 2018-11-29 | Moving coil detector for simultaneously detecting speed and acceleration |
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| CN109471160A true CN109471160A (en) | 2019-03-15 |
| CN109471160B CN109471160B (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112925009A (en) * | 2021-01-25 | 2021-06-08 | 南京林业大学 | Multicomponent lunar seismic detector system suitable for moon |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0277675A (en) * | 1987-12-11 | 1990-03-16 | Consiglio Nazi Ricerche | Method of using echo-graph and device for detecting structure and abnormality of underground section, sea bottom, etc. |
| CN2205963Y (en) * | 1994-07-30 | 1995-08-23 | 苏立 | Absolute amplitude sensor device |
| CN201063062Y (en) * | 2007-08-09 | 2008-05-21 | 万季梅 | Digital seismograph for a plurality of transducer |
| CN201548698U (en) * | 2009-10-30 | 2010-08-11 | 航天科工惯性技术有限公司 | Geophone based on quartz flexible accelerometer |
| CN202713603U (en) * | 2012-08-16 | 2013-01-30 | 何永斌 | Moving-coil loudspeaker with area-alterable capacitive vibration sensor |
| CN102901983A (en) * | 2012-11-16 | 2013-01-30 | 西安森舍电子科技有限责任公司 | Dual-output end composite geophone |
| CN106019362A (en) * | 2016-05-23 | 2016-10-12 | 中国科学院地质与地球物理研究所 | Moving coil type low-frequency expanded geophone |
-
2018
- 2018-11-29 CN CN201811443779.9A patent/CN109471160B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0277675A (en) * | 1987-12-11 | 1990-03-16 | Consiglio Nazi Ricerche | Method of using echo-graph and device for detecting structure and abnormality of underground section, sea bottom, etc. |
| CN2205963Y (en) * | 1994-07-30 | 1995-08-23 | 苏立 | Absolute amplitude sensor device |
| CN201063062Y (en) * | 2007-08-09 | 2008-05-21 | 万季梅 | Digital seismograph for a plurality of transducer |
| CN201548698U (en) * | 2009-10-30 | 2010-08-11 | 航天科工惯性技术有限公司 | Geophone based on quartz flexible accelerometer |
| CN202713603U (en) * | 2012-08-16 | 2013-01-30 | 何永斌 | Moving-coil loudspeaker with area-alterable capacitive vibration sensor |
| CN102901983A (en) * | 2012-11-16 | 2013-01-30 | 西安森舍电子科技有限责任公司 | Dual-output end composite geophone |
| CN106019362A (en) * | 2016-05-23 | 2016-10-12 | 中国科学院地质与地球物理研究所 | Moving coil type low-frequency expanded geophone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112925009A (en) * | 2021-01-25 | 2021-06-08 | 南京林业大学 | Multicomponent lunar seismic detector system suitable for moon |
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