CN101241191B - Method for enlarging moving-coil geophone magnetostatic field and a moving-coil geophone - Google Patents
Method for enlarging moving-coil geophone magnetostatic field and a moving-coil geophone Download PDFInfo
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- CN101241191B CN101241191B CN2007100361832A CN200710036183A CN101241191B CN 101241191 B CN101241191 B CN 101241191B CN 2007100361832 A CN2007100361832 A CN 2007100361832A CN 200710036183 A CN200710036183 A CN 200710036183A CN 101241191 B CN101241191 B CN 101241191B
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Abstract
The present invention relates to a method for augment static magnetic field intensity of moving-coil geo-phone and a moving-coil geo-phone. Winding coil by plane winding type on the alnico surface between upper and lower magnetic boots on moving-coil geo-phone to form multiple helix coils; supplying constant DC current to helix coils and then the magnetic field direction caused by helix coils is identical to the magnetic field direction of alnico. A moving-coil geo-phone comprises of coil rack, coil winding of upper and lower signal, alnico, upper and lower magnetic boots, and helix coil winding by plane winding type, the helix coil and signal coil on coil rack on coil rack are connected parallely, which are connected on signal transmitting line in series. The present invention has simpleand reasonable structure, improves the sensitivity and capability of cymoscope efficiently.
Description
Technical field
The present invention relates to a kind of geophysical survey construction appliance that improves the seismoreceiver performance, particularly a kind of method and a kind of moving-coil geophone that increases moving-coil geophone magnetostatic field.
Background technology
Wave detector is to realize vibration signal test and the critical component that writes down, and the sensitivity of wave detector and signal characteristic thereof are explained most important for the processing of follow-up data.
In the wave detector (sensor) of surface measurements vibrations, be that principle realizes easily by this type low cost of manufacture, technical method that electromechanics converts the vibration signal test with the electromagnetic induction.The principal element that influences the type transducer sensitivity has the static magnetic field strength of magnet steel generation and the useful area and the number of turn of receiving coil, be limited by the performance and the wave detector fixed sturcture of current magnetic steel material, wait the raising that realizes geophone sensitivity to run into technical bottleneck by increase magnet steel magnetic field, coil turn, so that the single sensitivity representative value of the type wave detector is generally less than 30V/m/s, is not improved significantly in nearly 20 years; Along with carrying out of high precision, high-resolution seismic survey activity, the sensitivity that improves seismoreceiver is significant.
Summary of the invention:
Purpose of the present invention provides a kind of simple structure, practical at above-mentioned problems of the prior art, and can improve method and a kind of moving-coil geophone of geophone magnetostatic field intensity effectively.
For realizing purpose of the present invention, the invention provides a kind of method that increases moving-coil geophone magnetostatic field intensity, may further comprise the steps: 1) moving-coil geophone up and down between the two magnetic boots magnet steel surface with the rich system mode coiling spiral winding in plane; 2) provide the Constant Direct Current electric current to coil, the magnetic direction that this coil is produced is identical with the magnet steel magnetic direction, thereby has effectively increased static magnetic field strength; 3) need not extra supplemental powered lead, utilize the geophone signal transmission line to this coil power supply, there are similar stopping direct current elements such as electric capacity in the signal coil loop that is wound on the coil holder, guarantees direct current on the signal transmssion line this branch road of can not flowing through.
A kind of moving-coil geophone, it comprises coil former, signal coil winding up and down, magnet steel, magnetic boots and plane coiling spiral winding winding up and down is characterized in that described spiral winding installs around on moving-coil geophone magnet steel surface up and down between the two magnetic boots, and be wound on coil holder in parallel between the signal coil up and down, together be serially connected on the signal transmssion line, signal coil one branch road is provided with similar stopping direct current components and parts such as electric capacity up and down.
The coiling of plane described in the present invention spiral winding is the enameled wire material, and coil is a multiturn plane coiling spiral winding.
Technique effect of the present invention is: do not change moving-coil geophone existing structure and member, utilize up and down between the two magnetic boots magnet steel space surface with plane coiling mode coiling multiturn spiral winding; Utilize the signal transmssion line loop that coil is carried out the Constant Direct Current power supply, need not extra electric power conductor; By increasing the static magnetic field strength in the wave detector, improved the sensitivity of geophone response, prolong the life-span of wave detector magnet steel simultaneously effectively, improve the performance of magnet steel; Utilize the spiral winding self-resistance directly to provide the part damping resistance for signal transmission loop.
The present invention is simple and reasonable for structure, has improved the sensitivity and the performance of wave detector effectively, can be widely used in earthquake prediction, resource (oil, coal, ocean etc.) seismic prospecting and engineering seismology Exploration Domain.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is electrical block diagrams of the present invention.
Embodiment
Referring to accompanying drawing 1, the present invention---a kind of method that increases moving-coil geophone magnetostatic field is the space of magnet steel 5 peripheries between the magnetic boots 4,6 about moving-coil geophone, carry out the coil plane coiling with enameled wire and form spiral winding 2, utilize original seismic signal transfer wire to be provided with DC current for this spiral winding 2, spiral coil 2 produces the magnetic field consistent with magnet steel 5 magnetic directions and superposes thereon, thereby has improved the magnetic field intensity of the inner static magnetic circuit of wave detector.
The present invention---a kind of moving-coil geophone comprises coil former 7, the signal coil winding 1,3 up and down, magnet steel 5, magnetic boots 4,6 and plane coiling spiral winding winding 2 up and down, wherein said plane coiling spiral winding 2 be wound on coil holder 7 on signal coil up and down 1,3 between in parallel, together be serially connected on the signal transmssion line, signal coil 1,3 branch roads are provided with similar stopping direct current components and parts such as electric capacity up and down.
According to shown in Figure 2, R1, L1 are the equivalent resistance and the inductance of planar spiral winding 2 among the figure, R2, L2 are the equivalent resistance and the inductance of signal coil 1,3 up and down, provide the circuit of Constant Direct Current electric current directly on the circuit of wave detector transmission signals, to improve for planar spiral winding 2, signal transmission wire is divided into the two-way parallel connection when entering wave detector, one the tunnel is provided with the Constant Direct Current electric current directly for spiral winding 2, and this electric current produces by current stabilization control module 8 modules; Lead up to and be wound on two signal coils 1,3 up and down on the coil holder 7, this loop has capacitance C or similar functions to connect every straight components and parts, guarantees that DC current only supplies with plane coiling spiral winding 2, thereby guarantees do not have DC current in the signal coil 1,3; The vibrations recording responses signal that produces in the signal coil 1,3 passes to the external signal transmission circuit by this road, enters vibration signal extraction unit 9, finishes the extraction and the conversion of vibration responding signal by signal conditioning circuit and signal extracting circuit in this unit 9.
Claims (3)
1. moving-coil geophone, it comprises coil former (7), signal coil winding (1,3) up and down, magnet steel (5), magnetic boots (4,6) and plane coiling spiral winding winding (2) up and down, it is characterized in that: described spiral winding winding (2) install around at moving-coil geophone magnet steel (5) surface and up and down between the magnetic boots (4,6), and be wound on coil former (7) and go up parallel connection between the winding of signal coil up and down (1,3) that is connected in series, together be serially connected on the signal transmssion line; The Constant Direct Current electric current is provided for described spiral winding winding (2), the magnetic direction that this spiral winding winding (2) is produced is identical with magnet steel (5) magnetic direction; Be connected with the stopping direct current components and parts on the branch road of described signal coil winding (1,3) up and down.
2. according to the described a kind of moving-coil geophone of claim 1, it is characterized in that: described stopping direct current components and parts are electric capacity.
3. a kind of moving-coil geophone according to claim 1 is characterized in that: described spiral winding winding (2) is the multiturn planar spiral winding of enameled wire coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100361832A CN101241191B (en) | 2007-11-21 | 2007-11-21 | Method for enlarging moving-coil geophone magnetostatic field and a moving-coil geophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100361832A CN101241191B (en) | 2007-11-21 | 2007-11-21 | Method for enlarging moving-coil geophone magnetostatic field and a moving-coil geophone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101241191A CN101241191A (en) | 2008-08-13 |
| CN101241191B true CN101241191B (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100361832A Expired - Fee Related CN101241191B (en) | 2007-11-21 | 2007-11-21 | Method for enlarging moving-coil geophone magnetostatic field and a moving-coil geophone |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323622B (en) * | 2011-06-15 | 2013-08-07 | 朱德兵 | Line array multi-channel synchronous transient electromagnetic directional detection method and device thereof |
| CN103925987A (en) * | 2013-09-27 | 2014-07-16 | 安徽省传感器厂 | Inertia moving coil type electric sensor |
| CN104749615B (en) * | 2015-03-18 | 2017-06-30 | 中南大学 | A kind of seismic prospecting or vibration test wave detector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159464A (en) * | 1976-07-06 | 1979-06-26 | Western Geophysical Co. Of America | Geophone with damping coil |
| CN2038248U (en) * | 1988-05-14 | 1989-05-24 | 重庆地质仪器厂 | Small-size geophone |
| CN2646724Y (en) * | 2003-08-21 | 2004-10-06 | 西安森舍电子科技有限责任公司 | Moving-coil type high sensitivity geophone |
-
2007
- 2007-11-21 CN CN2007100361832A patent/CN101241191B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159464A (en) * | 1976-07-06 | 1979-06-26 | Western Geophysical Co. Of America | Geophone with damping coil |
| CN2038248U (en) * | 1988-05-14 | 1989-05-24 | 重庆地质仪器厂 | Small-size geophone |
| CN2646724Y (en) * | 2003-08-21 | 2004-10-06 | 西安森舍电子科技有限责任公司 | Moving-coil type high sensitivity geophone |
Non-Patent Citations (5)
| Title |
|---|
| 全文. |
| 曹菁.适合高分辨率勘探要求的检波器.石油仪器12 6.1998,12(6),31-33. |
| 曹菁.适合高分辨率勘探要求的检波器.石油仪器12 6.1998,12(6),31-33. * |
| 末田正.电磁学 1.科学出版社,2003,138页图7.1（c）. |
| 末田正.电磁学 1.科学出版社,2003,138页图7.1(c). * |
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|---|---|
| CN101241191A (en) | 2008-08-13 |
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Granted publication date: 20100811 Termination date: 20131121 |