CN206848490U - A kind of dual sensor - Google Patents
A kind of dual sensor Download PDFInfo
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- CN206848490U CN206848490U CN201720592605.3U CN201720592605U CN206848490U CN 206848490 U CN206848490 U CN 206848490U CN 201720592605 U CN201720592605 U CN 201720592605U CN 206848490 U CN206848490 U CN 206848490U
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Abstract
It the utility model is related to the wave detector used in a kind of ocean OBC explorations, and in particular to a kind of dual sensor.Because traditional dual sensor because land wave detector and water inspection wave detector record principle are inconsistent produce output signal and 90 ° of phase differences be present, later data is caused to take huge.The utility model provides a kind of dual sensor regarding to the issue above, including water inspection wave detector, MEMS wave detectors, battery and the cable seal plug set gradually；MEMS wave detectors set the first plug close to one end of water inspection wave detector, and the other end of MEMS wave detectors sets the second plug；MEMS wave detectors include conductive plate rack, gimbal, gimbal hull and the 3 axis MEMS core body by wrapped with insulation；Conductive plate rack is between gimbal and the first plug；Gimbal hull is connected on the gimbal by the bearing at both ends；3 axis MEMS core body is arranged on the gimbal midship.
Description
Technical field
It the utility model is related to the wave detector used in a kind of ocean OBC explorations, and in particular to a kind of dual sensor.
Background technology
The appearance of submarine cable (Ocean Bottom Cable, abbreviation OBC) seismic prospecting and develop into earthquake towed cable without
The shallow water of method construction and barrier area provide the technological means for obtaining high quality seismic data, are surveyed accurately to complete oil gas
Visit and exploitation geological tasks, completion oil-gas reservoir exploitation monitoring task have established necessary technical foundation.
However, in OBC data acquisitions, because seabed and sea are all stronger reflecting interfaces, with epicenter excitation
One seismic wavelet reaches seabed from hypocentral location, or a reflection seismic wavelet is from underground arrival seabed, submarine cable
Wave detector, sense and record this reflection seismic wavelet.This reflection wavelet continues up advance and reaches sea, by sea
The reflection in face, then change direction and propagate downwards, reach seabed.Wave detector in submarine cable, senses and records again
This seismic wavelet, while this seismic wavelet is reflected by seabed, then changes direction and upwardly propagates, reaches sea, by
To the reflection on sea, then change direction and propagate downwards, reach seabed, so circulate, repeat.And these primary reflections
Shake the secondary of wavelet and subsequently reach, be exactly the more subwaves of seawater singing (reverberation).The more subwaves of seawater singing are offshore earthquakes
Maximum noise jamming in survey data.The maximum problem of OBC exploration engineerings is can not effectively to suppress seawater singing etc. more
Subwave.
Late 1980s are it has been proposed that the multiple wave interference of the double inspection reception techniques removal sea floor explorations of utilization, i.e., same
Two kinds of data of detector seismic data are examined using land inspection wave detector and water respectively in the land detector seismic data and water of position
Wave detector records.Land wave detector is a kind of particle velocity wave detector, and record is particle velocity change；Wave detector is one in water
Kind pressure detector, record is pressure change caused by seismic wave.Wave detector and water inspection inspection are examined in land by traditional dual sensor
Two kinds of reception devices of ripple device are combined, i.e., high sensitivity magneto-electric wave detector and ocean piezoelectric seismometer are combined into one.
This technology using the characteristics such as the polarity of velocity detector and pressure detector, amplitude, frequency difference, velocity detector number
Optimal proportion summation is carried out according to pressure detector data, reaches the purpose of more subwaves such as compacting seawater singing.
Land inspection wave detector uses moving-coil speed detection, and faint letter is not received because moving-coil speed detection sensitivity is too low
Number, in order to improve the sensitivity of dual sensor, requirement is reached, two moving-coils of being connected generally in dual sensor
Movement.What is be most widely used in current OBC dual sensors is exactly using two moving-coil speed wave detectors and piezoelectricity water
Examining wave detector coordinates the double inspection information of completion to receive.Such as double inspections disclosed in the Chinese U patent documents of utility model CN 202771006
Wave detector.
But moving-coil speed wave detector is due to its intrinsic mechanical features, even if two moving-coil movements of series connection, its performance
Still have much room for improvement, show as that sensitivity is low, signal to noise ratio is not high, LF-response ability is weak, the problem of uniformity difference.
And due to traditional dual sensor because wave detector and inconsistent (the land inspection detection of water inspection wave detector record principle are examined in land
Device is a kind of particle velocity wave detector, and its output voltage is directly proportional to the speed sensed；Water inspection wave detector is a kind of pressure detection
Device, its output voltage is directly proportional to the variable quantity of institute's induction pressure, similar to the mode of acceleration transducer)；And produce output
There are 90 ° of phase differences in signal, cause later data processing difficult, need first to carry out phase compensation in processing data, and this
It is very big to compensate the data volume of actual treatment, causes data processing to take huge.
Utility model content
The purpose of this utility model is to be directed to above-mentioned the deficiencies in the prior art, and provides a kind of dual sensor.
To achieve the above object, technical scheme provided by the utility model is：A kind of dual sensor, including set gradually
Water inspection wave detector, (MEMS is MEMS Micro Electro Mechanical Systems English to MEMS wave detectors
Text abbreviation, be it is a kind of can carry out electronic induction or the subminaturization mechanical devices of reaction, MEMS wave detectors are exactly to use MEMS skills
The wave detector of art), battery and cable seal plug；Above-mentioned MEMS wave detectors, battery and cable seal plug are arranged on double detections
The inside of the outer metal cylinder of device；Above-mentioned water inspection wave detector is connected with the outer metal cylinder of Two-gap coupled cavity；Above-mentioned battery connects with MEMS wave detectors
Connect；Above-mentioned water inspection wave detector and MEMS wave detectors are connected by respective output line with cable seal plug respectively；It is above-mentioned
MEMS wave detectors set the first plug close to one end of water inspection wave detector, and the other end of MEMS wave detectors sets the second plug；On
Stating MEMS wave detectors includes conductive plate rack, gimbal, gimbal hull and the 3 axis MEMS core body by wrapped with insulation；Lead
Electric plate rack installs conducting strip between gimbal and the first plug on conductive plate rack；Gimbal hull is by being located at two
The bearing at end is connected on the gimbal；3 axis MEMS core body is arranged on the gimbal midship.
In order to reduce the volume of dual sensor, using horizontal positioned 3 axis MEMS core body.
In order to avoid gimbal hull when static gimbal hull it is bottom-up, in reverse poised state,
The signal for causing 3 axis MEMS core body to detect is positive and negative on the contrary, gimbal hull end mounted bearing diameter is different.
In order to ensure the MEMS wave detector reliably working times up to more than 1 year, battery uses high power lithium battery.
In order to which effectively source current and signal code insulate, the insulating materials of parcel 3 axis MEMS core body is using poly-
Formaldehyde materials.
The mitigation of quality is caused using insulating materials such as polyformaldehyde in order to compensate for the middle part of gimbal hull, added
Rotation flexibility of the hull in silicone oil, the bottom of gimbal hull are provided with silicon steel or the balancing weight of wolfram steel material.
In order to strengthen the damping of gimbal, make the 3 axis MEMS core body on gimbal hull static quickly, so as to
Collection next time, two plugs and filling silicon oil in the cavity of the outer metal cylinder formation of Two-gap coupled cavity are not influenceed.
Further, water inspection wave detector include outer containment vessel and be arranged in the outer containment vessel piezoelectric ceramics unit,
Passive impedance matching transformer and polyurethane jacket；The piezoelectric ceramics unit and passive impedance matching transformer are arranged on poly- ammonia
It is connected in ester sheath and by wire；Filled polyurethane glue is sealed in the outer containment vessel.
Further, above-mentioned piezoelectric ceramics unit is stacked using be operated in double-sided adhesive ceramics under thickness expansion pattern three
Piezoelectric ceramics, potsherd is using the connected modes of 2 and 2 strings, and above-mentioned water inspection wave detector piezoelectric ceramics unit is 2 groups and parallel connection connects
Connect.
In order to effectively prevent unexpected stress concentration from destroying piezoelectric ceramics unit, the bottom of outer containment vessel is provided in round tying
Structure.
The advantages of the utility model：
1st, MEMS wave detectors are higher compared to moving-coil detector sensitivity due to using ripe acceleration chip, reliably
Property is stronger, and uniformity is more preferable.Because MEMS wave detectors and water inspection wave detector are acceleration signal, traditional double inspections are eliminated because of inspection
Ripple device record principle is inconsistent and produces output signal and the problem of 90 ° of phase differences be present, save considerably the processing of signal data
Time.
2nd, because moving-coil detector can only sense the vibration signal of vertical direction, it is necessary to place vertically.The utility model is adopted
With the MEMS wave detectors of 3 axis MEMS core body, Z axis can be thus utilized, core body is reduced double inspection inspections with horizontal positioned
The volume of ripple device.
3rd, the different setting of gimbal hull end mounted bearing diameter, the gimbal hull when static is avoided
It is bottom-up, cause in reverse poised state 3 axis MEMS core body detect signal it is positive and negative opposite the problem of.
4th, the high power lithium battery used can guarantee that the MEMS wave detector reliably working times up to more than 1 year.
5th, for active sensor, it is necessary to power, the middle part parcel 3 axis MEMS core body of gimbal hull gathers MEMS core bodys
Formaldehyde materials effectively can insulate source current and signal code.
6th, the balancing weight of highdensity silicon steel or wolfram steel material is added in the bottom of gimbal hull, makes gimbal ship
Body bottom is heavier, so that its decentralization, more easily returns to poised state.The middle part that compensate for gimbal hull uses poly- first
The insulating materials such as aldehyde and cause the mitigation of quality, add rotation flexibility of the hull in silicone oil.
What the 7th, the wave detector of working condition generally gathered is continuous vibration signal, needs to make biography after the completion of once shaking
Sensor is static quickly.Filling silicon oil in the cavity that metal cylinder is formed outside two plugs and Two-gap coupled cavity, make universal to be placed on silicon
Among oil, the damping of gimbal is enhanced；The 3 axis MEMS core body on gimbal hull can be made static quickly, so as to
Collection next time is not influenceed.
8th, using polyurethane jacket, the decay of sound wave can be prevented at utmost by pressure transmission to sensing element.Using nothing
Source impedance matching transformer overcomes active impedance matching transformer field and uses the problem of difficult.
9th, water inspection wave detector is connected in parallel using 2 groups of piezoelectric ceramics units, improves Static Electro capacity.Ensureing resonance frequency
On the premise of rate, capacitance is bigger, and inductance value reduces the design difficulty of rear end adaptation with regard to smaller.
10th, bottom can effectively prevent unexpected stress concentration from destroying piezoelectric ceramics list for the outer containment vessel of circular configuration
Member.
Brief description of the drawings
Fig. 1 is the sectional view of dual sensor；
Fig. 2 is the piezoelectric ceramics unit connection diagram of the inspection wave detector of water shown in Fig. 1.
Each label is described as follows in figure：
The outer metal cylinder of 1-Two-gap coupled cavity；
11-MEMS wave detectors；111-conductive plate rack, 112-gimbal, 113-gimbal hull；114-three axles
MEMS core bodys；115-bearing；116-balancing weight；
12-battery；13-cable seal plug；
2-the first plug；3-the second plug；
4-water examines wave detector；41-outer containment vessel；42-piezoelectric ceramics unit；43-passive impedance matching transformer；
44-polyurethane jacket.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
A kind of dual sensor as shown in Figure 1, including water inspection wave detector 4, MEMS wave detectors 11, the battery set gradually
12 and cable seal plug 13；MEMS wave detectors 11, battery 12 and cable seal plug 13 are arranged on the outer metal cylinder 1 of Two-gap coupled cavity
Inside；Water is examined wave detector 4 and is connected with the outer metal cylinder 1 of Two-gap coupled cavity；Battery 12 is high power lithium battery 12 and to MEMS wave detectors
11 power supplies；The detection signal that above-mentioned water inspection wave detector 4 and MEMS wave detectors 11 obtain respectively by respective output line with
Cable seal plug 13 is connected；Above-mentioned MEMS wave detectors 11 set the first plug 2, MEMS inspections close to one end of water inspection wave detector 4
The other end of ripple device 11 sets the second plug 3；Above-mentioned first plug 2, the second plug 3 and the outer metal cylinder 1 of Two-gap coupled cavity are formed
Filling silicon oil in cavity.
MEMS wave detectors 11 include conductive plate rack 111, gimbal 112, gimbal hull 113 and by polyformaldehyde material bag
The 3 axis MEMS core body 114 wrapped up in；Conductive plate rack 111 is located between the plug 2 of gimbal 112 and first, on conductive plate rack 111
Conducting strip is installed；Conducting strip is one group of flexible copper sheet, is attached by contact；Wire is substituted using conducting strip to connect
Connect, it is ensured that can conduct and not influence the rotation of gimbal hull 113.Gimbal hull 113 is by being located at both ends
Bearing 115 is connected on the gimbal 112；The diameter of 113 end mounted bearing of gimbal hull 115 is different；Three axles
MEMS core bodys 114 are arranged in the middle part of the gimbal hull 113 and horizontal positioned.The bottom of above-mentioned gimbal hull 113 is set
There are silicon steel or the balancing weight of wolfram steel material 116.
Water inspection wave detector 4 includes bottom for the outer containment vessel 41 of circular configuration and the pressure being arranged in the outer containment vessel 41
Electroceramics unit 42, passive impedance matching transformer 43 and polyurethane jacket 44；Above-mentioned piezoelectric ceramics unit 42 and passive impedance
Matching transformer 43 is arranged in polyurethane jacket 44 and is connected by wire；Filled polyurethane glue enters in above-mentioned outer containment vessel 41
Row sealing.
Piezoelectric ceramics unit 42 is using the three stacked piezoelectric ceramics for being operated in double-sided adhesive ceramics under thickness expansion pattern, pottery
Ceramics uses the connected mode of 2 and 2 strings, and above-mentioned water inspection wave detector 4 piezoelectric ceramics unit 42 is 2 groups and is connected in parallel.
As shown in Fig. 2 three stacked piezoelectric ceramics of double-sided adhesive ceramics under thickness expansion pattern are operated in, it is folded three respectively
The two sides extraction electrode line of piece, a is connected the positive pole as hydrophone unit with d after extraction, and b is connected with c is used as hydrophone unit
Negative pole.Wherein potsherd a is connected with d positive pole by lead, and negative pole is connected by copper base, so a and d is parallel connection, together
Between the b and c of sample and in parallel, overall between a, d and b, c is again cascaded structure, so water examines wave detector piezoelectric ceramics unit
In potsherd be 2 and 2 string structures.When two potsherd parallel connections, when its output charge and electric capacity are a potsherd output
Twice, output voltage is constant；During two potsherd series connection, twice when its output voltage is a potsherd output, output
Electric charge is constant, and output capacitance reduces half.
Claims (10)
1. a kind of dual sensor, including water inspection wave detector (4), MEMS wave detectors (11), battery (12) and the line set gradually
Cable sealing plug (13)；The MEMS wave detectors (11), battery (12) and cable seal plug (13) are arranged on outside Two-gap coupled cavity
The inside of metal cylinder (1)；The water inspection wave detector (4) is connected with the outer metal cylinder (1) of the Two-gap coupled cavity；The battery (12) with
MEMS wave detectors (11) are connected；The water inspection wave detector (4) and MEMS wave detectors (11) pass through respective output line respectively
It is connected with cable seal plug (13)；
It is characterized in that：
The MEMS wave detectors (11) set the first plug (2) close to one end of water inspection wave detector (4), MEMS wave detectors (11)
The other end sets the second plug (3)；
The MEMS wave detectors (11) include conductive plate rack (111), gimbal (112), gimbal hull (113) and by insulating
The 3 axis MEMS core body (114) of material parcel；
The conductive plate rack (111) is located between gimbal (112) and the first plug (2), on the conductive plate rack (111)
Conducting strip is installed；
The gimbal hull (113) is connected on the gimbal (112) by being located at the bearing (115) at both ends；
The 3 axis MEMS core body (114) is arranged in the middle part of the gimbal hull (113).
A kind of 2. dual sensor according to claim 1, it is characterised in that：The 3 axis MEMS core body (114) is horizontal
Place.
A kind of 3. dual sensor according to claim 2, it is characterised in that：The installation of gimbal hull (113) both ends
Bearing (115) diameter is different.
A kind of 4. dual sensor according to claim 3, it is characterised in that：The battery (12) is high power lithium battery.
A kind of 5. dual sensor according to any one of Claims 1-4, it is characterised in that：The insulating materials is poly-
Formaldehyde materials.
A kind of 6. dual sensor according to claim 5, it is characterised in that：The bottom of the gimbal hull (113)
It is provided with silicon steel or the balancing weight (116) of wolfram steel material.
A kind of 7. dual sensor according to claim 6, it is characterised in that：First plug (2), the second plug
(3) filling silicon oil in the cavity formed with the outer metal cylinder (1) of Two-gap coupled cavity.
A kind of 8. dual sensor according to claim 7, it is characterised in that：
The water inspection wave detector (4) includes outer containment vessel (41) and the piezoelectric ceramics unit being arranged in the outer containment vessel (41)
(42), passive impedance matching transformer (43) and polyurethane jacket (44)；The piezoelectric ceramics unit (42) and passive impedance
It is arranged in polyurethane jacket (44) with transformer (43) and is connected by wire；The interior filled polyurethane of the outer containment vessel (41)
Glue is sealed.
A kind of 9. dual sensor according to claim 8, it is characterised in that：The piezoelectric ceramics unit (42) uses work
Make three stacked piezoelectric ceramics of the double-sided adhesive ceramics under thickness expansion pattern, potsherd uses the connected mode of 2 and 2 strings, institute
Water inspection wave detector (4) piezoelectric ceramics unit (42) is stated to be 2 groups and be connected in parallel.
A kind of 10. dual sensor according to claim 9, it is characterised in that：The bottom of the outer containment vessel (41) is
Circular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720592605.3U CN206848490U (en) | 2017-05-25 | 2017-05-25 | A kind of dual sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720592605.3U CN206848490U (en) | 2017-05-25 | 2017-05-25 | A kind of dual sensor |
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| Publication Number | Publication Date |
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| CN206848490U true CN206848490U (en) | 2018-01-05 |
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ID=60798001
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167837A (en) * | 2017-05-25 | 2017-09-15 | 西安思坦测控技术有限公司 | A kind of dual sensor |
-
2017
- 2017-05-25 CN CN201720592605.3U patent/CN206848490U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167837A (en) * | 2017-05-25 | 2017-09-15 | 西安思坦测控技术有限公司 | A kind of dual sensor |
| CN107167837B (en) * | 2017-05-25 | 2023-06-23 | 西安思坦仪器股份有限公司 | Dual-detection detector |
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Effective date of registration: 20190719 Address after: 710065 Xi'an science and technology zone, Shaanxi high tech Road No. five, No. 22 Patentee after: Xi'an Sitan Apparatus Co., Ltd. Address before: 710065 Third Floor of No.3 Building, Stan Industrial Park, 22 Science and Technology Fifth Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xi'an measurement and Control Technology Co., Ltd. |