CN201796148U - Detector - Google Patents
Detector Download PDFInfo
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- CN201796148U CN201796148U CN2010202692907U CN201020269290U CN201796148U CN 201796148 U CN201796148 U CN 201796148U CN 2010202692907 U CN2010202692907 U CN 2010202692907U CN 201020269290 U CN201020269290 U CN 201020269290U CN 201796148 U CN201796148 U CN 201796148U
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- frequency
- low
- wave detector
- seismograph
- high frequency
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- 230000001133 acceleration Effects 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
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Abstract
The utility model discloses a detector, which comprises a low-frequency detector (1) and a high-frequency detector (2). The high-frequency detector (2) is rigidly fixed onto the low-frequency detector (1). The technical scheme of the detector includes that the low-frequency detector (1) is used as a carrier, the high-frequency detector (2) is rigidly fixed onto the low-frequency detector (1), the two detectors of different types respectively detect a high dominant frequency range and a low dominant frequency range, and accordingly, the detector can acquire rich vibration signals. The high-frequency detector (2) is lighter in weight and does not affect the frequency response characteristic of the low-frequency detector (1) fundamentally, and the high-frequency detector (2) is attached onto the low-frequency detector (1) with a larger weight, so that the high-frequency detector can be as to be capable of being effectively placed on the surface of a detected medium by the aid of the low-frequency detector (1) with larger weight.
Description
Technical field
The utility model relates to a kind of wave detector, particularly, relates to a kind of wave detector that is used for shallow seismic exploration field, land.
Background technology
In seismic prospecting, consider the wave detector cost performance and assign convenience, mostly use low-frequency seismograph (for example magnetoelectric velocity transducer) to carry out the dielectric surface shock detection.Yet in the vibration signal that epicenter excitation produces, the vibration signal that existing frequency is relatively low, the high-frequency vibration signal that has high-resolution seismic survey to need again.The energy of high-frequency vibration signal is little, needs highly sensitive high frequency geophone to receive.Particularly in shallow seismic exploration, because depth of exploration is shallow, needs as the high resolving power exploration, often all on exciting and receive, elastic wave makes great efforts to improve frequency, than hard ground, particularly on concrete plate body, grade beam, the road surface, the high frequency elastic wave excites and does not have problems, but use traditional speed pickup, owing to himself frequency response characteristic restriction, high seismic signal to the hundreds of hertz, outside the significant response frequency band range of speed pickup, this part signal can not complete documentation.And for high frequency geophone, acceleration transducer for example, it is highly sensitive, the high frequency response performance outstanding, but individuality and quality are less, can not be placed in effectively on the measured medium surface, consider factors such as work efficiency, service efficiency is lower in seismic prospecting.
The utility model content
Technical problem to be solved in the utility model provides and a kind ofly can detect simultaneously low frequency signal and high-frequency signal effectively and can be placed in the lip-deep wave detector of measured medium effectively.
For solving the problems of the technologies described above, the utility model provides a kind of wave detector, and this wave detector comprises low-frequency seismograph and high frequency geophone, and described high frequency geophone is rigidly fixed on the described low-frequency seismograph.
In technique scheme of the present utility model, utilize low-frequency seismograph as carrier, high frequency geophone is rigidly fixed on the low-frequency seismograph, and two dissimilar wave detectors detect the vibration signal that can obtain to enrich to high and low two primary bands respectively.The lighter weight of high frequency geophone can not influence the Frequency Response of low-frequency seismograph substantially, and therefore high frequency geophone can be placed on the measured medium surface by the big low-frequency seismograph of quality effectively attached on the bigger low-frequency seismograph of quality.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of instructions, is used from explanation the utility model with embodiment one of the present utility model, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the wave detector of a kind of embodiment of the present utility model;
Fig. 2 is the structural representation according to the wave detector of another kind of embodiment of the present utility model;
Fig. 3 is the structural representation according to the wave detector of also another kind of embodiment of the present utility model.
Description of reference numerals
1 low-frequency seismograph, 2 high frequency geophones
11 shells, 12 core bodys
13 core body compressing members, 131 cavitys
3 tail bones
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
As shown in Figure 1 to Figure 3, the utility model provides a kind of wave detector, and this wave detector comprises low-frequency seismograph 1 and high frequency geophone 2, and described high frequency geophone 2 is rigidly fixed on the described low-frequency seismograph 1.
In technique scheme of the present utility model, low-frequency seismograph 1 and high frequency geophone 2 have constituted dual sensor.Utilize low-frequency seismograph 1 as carrier, high frequency geophone 2 is rigidly fixed on the low-frequency seismograph 1, two dissimilar wave detectors detect the vibration signal that can obtain to enrich to high and low two primary bands respectively.The lighter weight of high frequency geophone 2 (being generally several grams or tens grams), substantially can not influence the Frequency Response of low-frequency seismograph 1, and therefore high frequency geophone 2 can be placed on the measured medium surface by the big low-frequency seismograph 1 of quality effectively attached on the bigger low-frequency seismograph 1 of quality.In technique scheme, high frequency geophone 2 has had the additional mass of low-frequency seismograph 1, its high frequency response performance can be under some influence, but its high frequency response performance has still promoted the high frequency spatial of useful signal greatly, and the response band width of low-frequency seismograph 1 has been expanded in the introducing of high frequency geophone 2.
The implication of the term in this specification and claims book " low-frequency seismograph " and " high frequency geophone " is applicable to explanation well known in the art, for example the response frequency range of low-frequency seismograph is several hertz~over one hundred hertz, and the response frequency range of high frequency geophone is tens of hertz~thousands of hertz.For example, described low-frequency seismograph 1 can be speed pickup, perhaps can be the magneto-electric wave detector.Described high frequency geophone 2 can be acceleration transducer, for example the high sensitivity acceleration transducer of piezoelectric type, pressure resistance type or electric capacity transform.
Low-frequency seismograph 1 generally includes shell 11 and is encapsulated in core body 12 and core body compressing member 13 in this shell 11, and described core body compressing member 13 can be between the end face or bottom surface of core body 12 and described shell 11, so that described core body 12 is pressed on the end face or bottom surface of described shell 11.For example in embodiment shown in Figure 1, core body compressing member 13 is pressed to described core body 12 on the end face of described shell 11 between the end face of core body 12 and described shell 11; In embodiment shown in Figure 2, core body compressing member 13 is pressed to described core body 12 on the bottom surface of described shell 11 between the bottom surface of core body 12 and described shell 11.Can as the case may be high frequency geophone 2 be rigidly fixed on the appropriate location of low-frequency seismograph 1.For example as depicted in figs. 1 and 2, be formed with cavity 131 in the described core body compressing member 13, described high frequency geophone 2 is positioned at this cavity 131.For example, as depicted in figs. 1 and 2, described core body compressing member 13 can be tubular, and promptly core body compressing member 13 up/down perforations are formed by a circle circumferential wall.At this moment, high frequency geophone 2 can be rigidly fixed on the core body 12 of low-frequency seismograph 1 or on the shell 11.
In addition, as shown in Figure 3, described high frequency geophone 2 can be positioned at outside the described shell 11, and is rigidly fixed on the top surface of described shell 11.
In the scheme that the utility model provides, high frequency geophone 2 is rigidly fixed on the low-frequency seismograph 1, this rigidly fixes and can realize by various suitable modes, and for example, described high frequency geophone 2 can be fixed on the low-frequency seismograph 1 by screw or bonding agent (for example solidifying glue).Preferably, high frequency geophone 2 is detachably fixed on the low-frequency seismograph 1, thereby can change impaired wave detector easily.
When arranging, can be so that the direction of the high sensitivity main shaft of low-frequency seismograph 1 and high frequency geophone 2 be consistent, if high frequency geophone 2 is two, three-component seismometer, then can be so that one of them high sensitivity main shaft of high frequency geophone 2 is consistent with the direction of the high sensitivity main shaft of low-frequency seismograph 1.And low-frequency seismograph 1 can pass through different transfer wires with high frequency geophone 2, with test signal introducing digital signal acquiring passage separately.
In use, for smooth and hard measured mediums such as mattess, can directly wave detector (shell 11 bottoms of for example above-mentioned low-frequency seismograph 1) be fixed on this measured medium surface by gypsum etc.And for the loose measured medium of some uneven quality, then can plug by the tail bone 3 that is fixed on described low-frequency seismograph 1 bottom on this measured medium surface, to detect.Tail bone 3 for example can be fixed on the bottom of the shell 11 of low-frequency seismograph 1 by being threaded.
Need to prove that each the concrete technical characterictic described in above-mentioned embodiment can carry out combination in any by any suitable manner, it falls within the scope disclosed in the utility model equally.In addition, also can carry out combination in any between the various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Claims (10)
1. a wave detector is characterized in that, this wave detector comprises low-frequency seismograph (1) and high frequency geophone (2), and described high frequency geophone (2) is rigidly fixed on the described low-frequency seismograph (1).
2. wave detector according to claim 1 is characterized in that, described low-frequency seismograph (1) is a speed pickup.
3. wave detector according to claim 1 is characterized in that, described low-frequency seismograph (1) is the magneto-electric wave detector.
4. according to each described wave detector in the claim 1 to 3, it is characterized in that described high frequency geophone (2) is an acceleration transducer.
5. wave detector according to claim 1, it is characterized in that, described low-frequency seismograph (1) comprises shell (11) and is encapsulated in this shell (11) interior core body (12) and core body compressing member (13), and described core body compressing member (13) is positioned between the end face or bottom surface of core body (12) and described shell (11), so that described core body (12) is pressed on the end face or bottom surface of described shell (11).
6. wave detector according to claim 5 is characterized in that, is formed with cavity (131) in the described core body compressing member (13), and described high frequency geophone (2) is positioned at this cavity (131).
7. wave detector according to claim 6 is characterized in that, described core body compressing member (13) is a tubular.
8. wave detector according to claim 5 is characterized in that, described high frequency geophone (2) is positioned at outside the described shell (11), and is rigidly fixed on the top surface of described shell (11).
9. wave detector according to claim 1 is characterized in that, described high frequency geophone (2) by screw or adhesive securement on described low-frequency seismograph (1).
10. wave detector according to claim 1 is characterized in that, described wave detector also comprises the tail bone (3) that is fixed on described low-frequency seismograph (1) bottom.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010202692907U CN201796148U (en) | 2010-07-21 | 2010-07-21 | Detector |
Applications Claiming Priority (1)
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CN2010202692907U CN201796148U (en) | 2010-07-21 | 2010-07-21 | Detector |
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CN201796148U true CN201796148U (en) | 2011-04-13 |
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CN2010202692907U Expired - Lifetime CN201796148U (en) | 2010-07-21 | 2010-07-21 | Detector |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101963672A (en) * | 2010-07-21 | 2011-02-02 | 中国神华能源股份有限公司 | Detector |
CN102253425A (en) * | 2011-04-18 | 2011-11-23 | 中北大学 | Three-dimensional detector |
CN102253408A (en) * | 2011-04-14 | 2011-11-23 | 中国神华能源股份有限公司 | Wave detector |
-
2010
- 2010-07-21 CN CN2010202692907U patent/CN201796148U/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101963672A (en) * | 2010-07-21 | 2011-02-02 | 中国神华能源股份有限公司 | Detector |
CN101963672B (en) * | 2010-07-21 | 2012-09-05 | 中国神华能源股份有限公司 | Detector |
CN102253408A (en) * | 2011-04-14 | 2011-11-23 | 中国神华能源股份有限公司 | Wave detector |
CN102253425A (en) * | 2011-04-18 | 2011-11-23 | 中北大学 | Three-dimensional detector |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20110413 |
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CX01 | Expiry of patent term |