CN101672927A - Broadband ocean bottom seismograph - Google Patents
Broadband ocean bottom seismograph Download PDFInfo
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- CN101672927A CN101672927A CN200910093585A CN200910093585A CN101672927A CN 101672927 A CN101672927 A CN 101672927A CN 200910093585 A CN200910093585 A CN 200910093585A CN 200910093585 A CN200910093585 A CN 200910093585A CN 101672927 A CN101672927 A CN 101672927A
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Abstract
The invention discloses a broadband ocean bottom seismograph comprising two protecting shells and a connecting plate, wherein the two protecting shells are respectively fixed on both ends of the connecting plate; a sealed instrument storehouse ball and a sealed battery storehouse ball are respectively installed in the two protecting shells; a battery and an acoustic communication circuit are installed in the battery storehouse ball; two sealed storehouse balls are electrically connected by a cable; a gimbal for keeping the seismograph in a level state is arranged in the instrument storehouse ball and provided with a data collector and a seismograph; an electro erosion releasing mechanism for releasing a coupling frame is fixed on the connecting plate; the coupling frame for supplying downforces for the seismograph is positioned below the connecting plate and connected with the electro erosion releasing mechanism by wire ropes; and a weighting frame is connected below the coupling frame by an iron chain. The broadband ocean bottom seismograph can be used in deep ocean, and the observed broadband range is 40 s to 40 Hz; and the broadband ocean bottom seismograph is suitable not onlyfor viewing the ocean bottom natural earthquake, but also for viewing ocean bottom manmade earthquake source.
Description
Technical field
The present invention relates to a kind of broadband ocean bottom seismograph, belong to oceanic earthquake observation technology field.
Background technology
At present, before the nineties in 20th century, the main stream approach of surveying submarine geophysics information is an artificial earthquake.Seismic event can be grown the propagation of distance ground in seawater, this makes signals collecting to implement on the sea.Yet the slave unit angle sees, even seismic event can be in sea surface observation, but for the measurement of earthquake field (unartificial focus), because Measuring Time is long, needs the problem of solution equipment extended immobilization placement.Obviously, in the marine environment of upheaval, this problem is difficult to solve across the sea.
Summary of the invention
In order to satisfy the needs of China's broadband submarine earthquake observation, improve level to China's ocean gas hydrate exploration, oceanic earthquake observation and the exploration of China mainland frame.The present invention is intended to invent and a kind ofly can be used in broadband ocean bottom seismograph deep-sea (greater than 3000 meters), that have broadband, the contour performance index of great dynamic range.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of broadband ocean bottom seismograph is characterized in that comprising:
Two protecting sheathings;
A web joint, described two protecting sheathings are separately fixed at the two ends of this web joint;
A hermetically-sealed instrument storehouse ball and a sealed cell storehouse ball are contained in respectively in described two protecting sheathings, and battery and underwater sound communicating circuit are housed in the battery compartment ball, are electrically connected with cable between two gas-tight silo balls;
Be used to keep seismometer to be in the gimbal of horizontality, be contained in the ball of described instrument storehouse installation data collector and seismometer on the gimbal;
Be used to discharge the electrocorrosion releasing mechanism of coupling shelf, it is fixed on the described web joint;
For seismograph provides the coupling shelf of negative buoyancy, it is positioned at described web joint below and is connected with described electrocorrosion releasing mechanism with wire rope, and the below of coupling shelf also connects counter-balanced carriage with iron chains.
Further:
Described gimbal comprises Chang Pingji structure and latch mechanism, wherein: described Chang Pingji structure comprises left and right sides fixed support, normal flat circle, the front and back link, the chassis, the ball holder, left and right sides fixed support is fixed in the ball of described hermetically-sealed instrument storehouse, hold about normal flat circle and articulate with left and right sides fixed support respectively, the front and back end of normal flat circle articulates with the upper end of front and back link respectively, the lower end of front and back link is fixed with the front and back end on chassis respectively, the bottom surface on chassis is fixed in the ball holder, the axis quadrature that forms between the axis that forms between the support bracket fastened center, the left and right sides and the center of front and back link; Described latch mechanism comprises spherical support, electric lifting mechanism, base, base is fixed in the ball of described hermetically-sealed instrument storehouse, electric lifting mechanism is contained on the base, and spherical the support by electric lifting mechanism drives lifting, can be tight against the lower camber side of described ball holder after spherical support is risen.
Described spherical the support is identical arc surface of radian and uniform pit with the surface of contact of ball holder.
Described data acquisition unit, seismometer, Chang Pingquan are installed on the chassis of described Chang Pingji structure, and two fixed supports about ball inside, hermetically-sealed instrument storehouse only need be fixed are so that debugging and assembling.
Described electrocorrosion releasing mechanism comprises a fuse and the fuseboard that is fixed on the described web joint, the two ends of fuseboard respectively are embedded a fuse pulling block, establish the coiling stake on each fuse pulling block, the central authorities of fuseboard are provided with positive and negative electrode, some coiling stakes, compressing tablet, fuse is walked around each coiling stake on fuseboard and the fuse pulling block via negative electrode, the two ends of this fuse are compressed by compressing tablet, and each fuse pulling block and fuseboard are fixed together, and each fuse pulling block is connected with described coupling shelf through wire rope.
Permeable hole gathers on the described web joint.
Described seismometer is a broadband dynamic balance reaction type seismometer, and frequency band range is 40 seconds to 40 hertz, seismometer is built-in to be realized ± and the electronics balancing controls of 3 ° setting range.
Described battery is contained in the battery case that plays vibration damping and protection galvanic action of hardhead sponge making, and battery case is directly put into the battery compartment ball.
Described coupling shelf is made up of two vesica piscises up and down, several support iron pipes of being connected between two vesica piscises; weld angle bar on the part iron pipe; wear screw rod on the angle bar, screw rod is affixed with the wire rope that is connected described fuse pulling block, described two protecting sheathings be placed on this coupling shelf above.
Described hermetically-sealed instrument storehouse ball also is equipped with GPS, electronic compass, data radio station and signal lamp.
Broadband ocean bottom seismograph of the present invention adopts two spherical structures, so the floatage energy that provides carries a large amount of batteries, broadband ocean bottom seismograph was prolonged greatly in the working time in seabed, and adopt disposable high power capacity lithium battery as supplying cell, make its reliable operation, change very convenient; Broadband ocean bottom seismograph of the present invention uses the dynamic balance reaction type broadband seismometer of capacitive displacement transducing to break in the world monopolization situation to broadband ocean bottom seismograph.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an overall perspective view of the present invention;
Fig. 2 is a longitudinal profile of the present invention structural map;
Fig. 3 is a gimbal structural map of the present invention;
Fig. 4 releasing mechanism structural map of the present invention;
Fig. 5 releasing mechanism steel wire of the present invention twines synoptic diagram;
Fig. 6 is a battery case structural map of the present invention.
Among the figure: 1 counter-balanced carriage, 2 coupling shelfs, 3 glass spheres, 4 battery cases, 5 lithium batteries, 6 battery circuit boards, 7 underwater sound plate fixed mounts, 8 underwater sound circuit board 9ABS containment vessels, 10 underwater acoustic communications are popped one's head in 11 vacuum seal holes, 12 stainless steel connecting plates, 13 relieving mechanisms, 14 hoisting rings, 15 supporting plate 16GPS antennas, 17 support 18led lamps, 19 support bars, 20 data radio stations, 21 collectors, 22 seismometer feedback circuits, 23 fixed trays, 24 links, 25 fixed supports, 26 normal flat circle 27 horizontal earthquake meters 28 vertically to seismometer 29 bearings 30 hold-down screws 31 ball holders 32 chassis 33 transmission gear wheels, 34 drive pinions, 35 bases, 36 base links, 37 outer ring nut 38 motors 39 interior ring nut 40 drive screws 41 lifting nuts 42 spherical 43 limit switches, 44 pins, 45 touching bars, 46 contact-making switch framves, 47 control circuit boards, 48 poles, 49 positive electrodes, 50 fuse pulling blocks, 51 coiling stakes, 52 negative electrodes, 53 pad posts, 54 silk pressing screws, 55 retaining rings, 56 double-screw bolts, 57 nuts, 58 compressing tablets, 60 fuses that support
Embodiment
Broadband ocean bottom seismograph of the present invention comprises: two protecting sheathings; A web joint, described two protecting sheathings are separately fixed at the two ends of this web joint; A hermetically-sealed instrument storehouse ball and a sealed cell storehouse ball are contained in respectively in described two protecting sheathings, and battery and underwater sound communicating circuit are housed in the battery compartment ball, are electrically connected with cable between two gas-tight silo balls; Be used to keep seismometer to be in the gimbal of horizontality, be contained in the ball of described instrument storehouse installation data collector and seismometer on the gimbal; Be used to discharge the electrocorrosion releasing mechanism of coupling shelf, it is fixed on the described web joint; For seismograph provides the coupling shelf of negative buoyancy, it is positioned at described web joint below and is connected with described electrocorrosion releasing mechanism with wire rope, and the below of coupling shelf also connects counter-balanced carriage with iron chains.
Wherein: instrument room, battery flat and releasing structure all are fixed on the stainless steel web joint, constituted the recovery section of broadband ocean bottom seismograph, realize that broadband ocean bottom seismograph is in submarine earthquake observation, data recording and fusing come-up function, coupling shelf is that broadband ocean bottom seismograph can not recovery section, for broadband ocean bottom seismograph provides the weight of sinking, make broadband ocean bottom seismograph sink down into the seabed from the sea.Explanation respectively below.
1. instrument storehouse
Referring to Fig. 1, Fig. 2.The instrument storehouse is the gas-tight silo ball that the main observation instrument of broadband ocean bottom seismograph of the present invention has been installed, and sealing storehouse ball is placed in the ABS engineering plastics containment vessel.Inside, instrument storehouse is equipped with collector 21, horizontal earthquake meter 27, vertically to seismometer 28, gimbal, data radio station 20, stroboscopic signal lamp 28, GPS, electronic compass.Wherein:
(1) collector
The collector 21 of broadband ocean bottom seismograph of the present invention belongs to known technology, and main the realization is recorded in the CF card to the digitizing of seismic signal and with data.Collector is integrated 24 AD conversions, low-power consumption CPLD large-scale programmable logic array, network chip, GPS, CF card and power management translation circuits.Collector embedded software system is the ECOSII real time operating system, 24 bit data collections, FIR digital filtering operation, compression storing data operation in operating system kernel, have been realized simultaneously, make collector when having low-down power consumption (less than 0.3 watt), also have high-technology index, comprising: greater than the 120dB dynamic range, greater than 100dB total harmonic distortion degree, good amplitude versus frequency characte.Collector provides data, services and parameter setting by network interface, in the inner integrated wireless aps of collector, wireless aps is connected on the submarine seismograph collector network interface by netting twine, in use do not need to open instrument room and just can carry out data download, parameter setting operation to described submarine seismograph by wireless network.
CPU selects the AT91FR4016S of atmel corp for use, the integrated ARM7TDMI kernel of this CPU, built-in 256K byte SRAM, 2M byte FLASH, 2 UART and 32 IO mouths adopt full Static Design, frequency of operation 0-75MHz, core power supply 1.8V (intending adopting 1.1V).CPU peripheral expansion a slice 1M byte SRAM (K6F8016R6D) connects CPLD XC2C384 on the bus; One of inner serial ports is as terminal console, and another is by the multiplexing connection of CPLD GPS, electronic compass and radio transmitter.CPU is by the emission of I/O control light, leveling circuit.
CPLD selects XC2C384 for use, and the encapsulation of 208 pin is for 384 macroelements.The very low and dependable performance of this device power consumption.XC2C384 realizes communicating by letter with cpu data, SRAM is realized level conversion, reception AD translation data, expansion CF card (IDE), bridged lan interface, switches serial ports and extended SPI bus function, connect voltage temperature simultaneously and monitor chip MAX1298 (5 passages, band temperature sensor).
AD converter is selected the ADS1251 of TI company for use, and ADS1251 is the AD converter that 24 potential differences are divided input, can reach 19 bit resolutions when the 20K sampling rate, and have very low power consumption (20K/8mW).The simulating signal of sensor output drives directly input AD of back through operational amplifier, and ADS1251 employing+5V powers, and reference voltage is external+4.096V.
In order to guarantee submarine seismograph low-power consumption and high reliability, in submarine seismograph collector and submarine seismograph control system, adopt eCos as operation system of software, eCos is an outstanding embedded real-time operating system.The architecture of eCos is a kind of hierarchy, and hardware abstraction layer is opened operating system and hardware isolated, and this makes transplanting eCos become possibility to different hardware platforms, and level of abstraction is just as the bridge between software and the hardware.Main transplanting thought is according to the modular design of eCos, to finish hardware abstraction layer.After the transplanting work and device driver debugging work that realize ecos2.0, just can realize gathering, controlling the design of application software.The major function of software systems comprises: data recording, data are downloaded, the system equipment control program (comprises the system voltage temperature monitoring, survival equipment control, levelling gear control, the sonar control panel monitors, electronic compass reception, battery charging management and station command explanation etc.).
(2) seismometer
The seismometer of broadband ocean bottom seismograph of the present invention comprises that 2 horizontal earthquake meters 27, one vertically form to seismometer 28 and seismometer feedback circuit 22, this seismometer is a broadband dynamic balance reaction type electric capacity displacement transducing formula seismometer, be 2 seconds its natural vibration period, working band is 40 seconds to 40 hertz, sensitivity 1000V/m/s (single-ended) also has low noise and great dynamic range.Seismometer integrated zeroing circuit in feedback circuit is adjusted seismometer zero point, when seismometer begins to return to zero, at first the seismometer frequency band is switched to 1 second to 40 hertz, gather seismometer information at zero point by the AD conversion then,, adjustment information is sent to digital regulation resistance by calculating adjustment information, the digital regulation resistance reference voltage amount that will return to zero exports the zeroing coil to, the zeroing coil is adjusted seismometer owing to there is electric current to generate an electromagnetic field by meeting, and setting range reaches ± and 3 °.
(3) gimbal
The submarine seismograph working environment is very complicated, submarine seismograph by the sea free-falling to the seabed, inartificial this step of installing, and seismometer needs the work stylobate of a level, this with regard to require seismometer in the submarine seismograph be operated in one can self-leveling device on, this device is exactly a gimbal.
The principle of work of the gimbal in the broadband ocean bottom seismograph of the present invention is to use the bearing of two mutually orthogonals to constitute a plane, the platform of a center of gravity at the center is placed on these two bearings, when plane that these two bearings constitute and surface level are not parallel, this platform is free to rotate around these two bearings, when the center of gravity of platform overlaps with the center, platform can stop operating, and this moment, platform overlapped with surface level.
This gimbal is based on the gimbal of gravity principle adjustment level, is made up of normal flat-bed machine structure and latch mechanism.Wherein:
Referring to Fig. 3.The Chang Pingji structure comprises fixed tray 23 (Fig. 2), left and right sides fixed support 25, normal flat circle 26, front and back link 24, chassis 31, ball holder 32.Left and right sides fixed support is fixed in the ball of described hermetically-sealed instrument storehouse, hold about normal flat circle and articulate with left and right sides fixed support respectively, the front and back end of normal flat circle articulates with the upper end of front and back link respectively, the lower end of front and back link is fixed with the front and back end on chassis respectively, the bottom surface on chassis is fixed in the ball holder, the axis quadrature that forms between the axis that forms between the support bracket fastened center, the left and right sides and the center of front and back link.At first on chassis 32, seismometer is installed, chassis 32 and ball holder 31 are linked together by screw, bearing 29 is installed on top at 2 links 24, use gib screw 30 that front and back link 24 and normal flat circle 26 are fixed together, bearing 29 is installed at two ends at Chang Pingquan 26, and circle 26 will often be put down by use gib screw 30 and left and right sides fixed support 25 is fixed together.
Latch mechanism comprises spherical support 42, electric lifting mechanism, base 35, base 35 is fixed in the ball of described hermetically-sealed instrument storehouse, electric lifting mechanism is contained on the base 35, and spherical the support by electric lifting mechanism drives lifting, can be tight against the lower camber side of ball holder 32 after spherical support is risen.
Electric lifting mechanism is made up of transmission gear wheel 33, drive pinion 34, base 35, base link 36, outer ring nut 37, motor 38, interior ring nut 39, drive screw 40, lifting nut 41, limit switch 43, pin 44, touching bar 45, contact-making switch frame 46, control circuit board 47, pole 48.Base link 36 is fixed together with base 35, motor 38 is fixed on the base link 36, drive screw 40 is fixed together with drive pinion 34, drive pinion 34 and 33 engagements of transmission gear wheel, and transmission gear wheel 33 is fixed together with drive screw 40.The other end of drive screw 40 and lifting nut 41 are by being threaded togather, and lifting nut 41 is fixed together with spherical support 42.Touching bar 45 is fixed on the lifting nut 41.Two pins 44 are installed on the base link 36, are positioned at touching bar 45 both sides.Two limit switches 43 and control circuit board 47 are installed on the contact-making switch frame 46 up and down, and contact-making switch frame 46 is installed on the base link 36.Motor 38 drives drive pinion 34 rotations, drives drive screw 40 rotations by the engagement between gear.Because drive screw 40 and lifting nut 41 are by being threaded, and the restriction of 44 pairs of touching bars 45 of two pins, along with the rotation of drive screw 40, lifting nut 41 and ball-type support 42 and do elevating movement, when touching bar 45 contacted with limit switch 43, motor 38 quit work.
The course of work of this gimbal is that control circuit 47 control motors 38 drive drive screws 40 and turn clockwise, and lifting nut 41 and ball-type support 42 operations downwards, when touching bar 45 and after limit switch 43 contacted, motor 38 stopped operating.Ball holder this moment 32 and the seismometer that is installed on the base can rotate around bearing 29 in ± 30 °, remain on horizontality at last.Control circuit 47 control motors 38 driving drive screws 40 are rotated counterclockwise then, lifting nut 41 and ball-type support 42 upwards operations, and after touching bar 45 and limit switch 43 contacts, motor 38 stops operating, this moment, spherical 42 cambered surfaces that support closely contacted with ball holder 32 cambered surfaces, and leveling finishes.
Described ball holder 32 is the same with spherical support 42 its surperficial radians, be arc surface, both surfaces are evenly distributed with 0.2 millimeter pit, can increase the friction force of two face contacts, guarantee that between seismometer and the gimbal be to be rigidly connected, reduce parasitic resonance.
Described data acquisition unit, seismometer, Chang Pingquan are installed on the chassis 31 of Chang Pingji structure, and two fixed supports about ball inside, hermetically-sealed instrument storehouse only need be fixed are so that debugging and assembling.
(4) GPS, electronic compass, data radio station 20 and stroboscopic signal lamp 18
Hermetically-sealed instrument storehouse ball also is equipped with GPS, electronic compass, data radio station and signal lamp.Behind submarine seismograph emersion sea, salvage for convenience, submarine seismograph is integrated data radio station, seismograph sends positional information after opening the GPS location across the sea by data radio station.This radio station frequency of operation is 230MHz, and emissive power is 2W, uses 1/8 wavelength stub antenna, guarantee submarine seismograph across the sea transmission range greater than 2 kilometers.
Simultaneously, high brightness red diodes that submarine seismograph is inner also integrated, emissive power 5W conveniently salvages at night.
2. battery compartment
Broadband ocean bottom seismograph need be kept than the farm labourer in the seabed and do the time, therefore just need carry a large amount of batteries.The present invention uses disposable lithium polymer battery, and battery is divided into four and organizes greatly.First group, in parallel again after the series connection of two batteries, supply voltage 6.6V, this part battery give collector and seismometer power supply.Second group, in parallel again after the series connection of 4 batteries, supply voltage 13.2V gives the power supply of escape mechanism.The 3rd group, in parallel again after the series connection of 4 batteries, supply voltage 13.2V gives the power supply of data radio station and stroboscopic lamp.The 4th group, in parallel again after the series connection of 4 batteries, supply voltage 13.2V, feedwater acoustic communication circuit and the power supply of release control circuit.
The power supply of many prescriptions formula has following advantage like this:
1) supplying cell is organized parallel connection more, prevents that individual cell from going wrong;
2) do not power can be better according to each parts power consumption reasonable distribution battery for polycomponent;
3) release portion is powered separately, and this part battery is not used in record, guarantee long-time seabed record after, it is still sufficient to discharge power supply, guarantees to discharge.
4) data radio station and stroboscopic lamp are powered separately, normal working hours after guaranteeing to float.
Broadband ocean bottom seismograph of the present invention carries a large amount of batteries, these batteries are placed on respectively in the hole 5 of the battery case 4 in the glass capsulation storehouse (Fig. 6), battery case uses the hardhead sponge time processing to form, profile is slightly larger than glass capsulation cabin ball inwall, whole to put into the glass capsulation storehouse just passable with battery case during installation, do not need to paste, fix, the volume that utilizes battery to put into back entire cell box 4 can increase combines closely itself and glass capsulation storehouse inwall.
3. web joint
Be that stainless steel web joint 12 connects by one between the instrument storehouse of broadband ocean bottom seismograph of the present invention and the battery compartment, stainless steel web joint 12 adopts the corrosion resistant plate of 8 millimeters thick directly to process, above evenly distribute 20 millimeters hole so that permeable when broadband ocean bottom seismograph sinks in seawater.
The hole of stainless steel web joint 12 by four limits respectively with two ABS containment vessels 9 on the hole link together.
4. releasing mechanism and coupling shelf
The electrocorrosion releasing mechanism of broadband ocean bottom seismograph of the present invention comprises a fuse and the fuseboard that is fixed on the web joint 12, the two ends of fuseboard respectively are embedded a fuse pulling block, establish the coiling stake on each fuse pulling block, the central authorities of fuseboard are provided with positive and negative electrode, some coiling stakes, compressing tablet, fuse is walked around each coiling stake on fuseboard and the fuse pulling block via negative electrode, the two ends of this fuse are compressed by compressing tablet, and each fuse pulling block and fuseboard are fixed together.
The coupling shelf of broadband ocean bottom seismograph of the present invention is welded by the vesica piscis of two cast iron making up and down, the several iron pipes that are connected between two vesica piscises, weld angle bar on the part iron pipe, wear screw rod on the angle bar, the affixed wire rope of screw rod, the fuse pulling block of this wire rope and releasing mechanism affixed.The below of coupling shelf 2 connects counter-balanced carriage 1 with 41 meter long iron chains.When broadband ocean bottom seismograph sank in seawater, because the weight of counter-balanced carriage 1 is much larger than the buoyancy of broadband ocean bottom seismograph, it can dragged broadband ocean bottom seismograph and is vertically sinking, and reduces the influence of ocean current to instrument.
Referring to Fig. 4, Fig. 5.Releasing mechanism 13 is made up of fuseboard, positive electrode 49, fuse pulling block 50, coiling stake 51, negative electrode 52, pad post 53, silk pressing screw 54, retaining ring 55, double-screw bolt 56, nut 57, compressing tablet 58 and a fuse 60.Releasing mechanism is fixed on the corrosion resistant plate 12 by 8 poles 48, twine fuse 60 on the releasing mechanism 13, fuse 60 adopts the steel wire strand of 1 mm dia, per sharely form by 36 finer wires again, fuse 60 is begun to twine by compressing tablet 58, walk around silk pressing screw (right side) 54 clockwise, walk around coiling stake (1) 51 afterwards more successively, coiling stake (2) 51, coiling stake (3) 51, through coiling stake (4) 51 lower edge, pass through negative electrode (right side) 52 successively, pad post 53, negative electrode (left side) 52, walk around coiling stake (6) 51 more successively, coiling stake (7) 51, coiling stake (8) 51 is walked around silk pressing screw (left side) 54 at last and is got back to compressing tablet 58 places, finishes the installation of fuse 60.Fuse 60 links together fuse pulling block 50 and whole releasing mechanism by the coiling stake 51 on the fuse pulling block 50.
The ABS containment vessel that instrument storehouse and battery compartment are housed is fixed together by stainless steel web joint 12; releasing mechanism 13 also is fixed together with stainless steel web joint 12; whole then be placed on coupling shelf above, coupling shelf is connected with the fuse pulling block 50 of releasing mechanism by wire rope.
After broadband ocean bottom seismograph added direct current for positive electrode 49 in the releasing mechanism and negative electrode 52, the fuse 60 of negative electrode 52 tops just began to take place the electrocorrosion reaction, until last disconnection.After fuse 60 disconnected, fuse pulling block 50 just separated with whole releasing mechanism, and the coupling shelf that is connected with fuse pulling block 50 also separates with whole broadband ocean bottom seismograph thereupon.
Because releasing mechanism closely is fixed together with broadband ocean bottom seismograph, reclaiming along with the recovery of submarine seismograph, is can reusable parts, therefore, all metal parts all adopt 316 stainless steels to process in the releasing mechanism, have high corrosion resistance.
Principle of work
The course of work of broadband ocean bottom seismograph of the present invention is: select suitable marine site that broadband ocean bottom seismograph is thrown in the seawater from the sea, the weight of broadband ocean bottom seismograph integral body is much larger than its buoyancy in seawater, so can sink down into the seabed, after sinking to the seabed, automatically start inner gimbal and carry out leveling, seismometer was started working after leveling was finished, and data acquisition unit also enters duty, and the beginning continuous acquisition also writes down seismometer output.When needs obtain record data, send release command by sonar, broadband ocean bottom seismograph is reclaimed.Broadband ocean bottom seismograph starts releasing mechanism after receiving underwater sound release command, coupling shelf is separated with the broadband ocean bottom seismograph recovery section, the broadband ocean bottom seismograph recovery section since buoyancy greater than self gravitation, will the emersion sea, and send the GPS locating information by data radio station, determine the position of instrument and salvage instrument according to this information then, extract the observation data of data acquisition unit record again and analyze and scientific research.
Claims (10)
1. broadband ocean bottom seismograph is characterized in that comprising:
Two protecting sheathings;
A web joint, described two protecting sheathings are separately fixed at the two ends of this web joint;
A hermetically-sealed instrument storehouse ball and a sealed cell storehouse ball are contained in respectively in described two protecting sheathings, and battery and underwater sound communicating circuit are housed in the battery compartment ball, are electrically connected with cable between two gas-tight silo balls;
Be used to keep seismometer to be in the gimbal of horizontality, be contained in the ball of described instrument storehouse installation data collector and seismometer on the gimbal;
Be used to discharge the electrocorrosion releasing mechanism of coupling shelf, it is fixed on the described web joint;
For seismograph provides the coupling shelf of negative buoyancy, it is positioned at described web joint below and is connected with described electrocorrosion releasing mechanism with wire rope, and the below of coupling shelf also connects counter-balanced carriage with iron chains.
2. broadband ocean bottom seismograph as claimed in claim 1 is characterized in that:
Described gimbal comprises Chang Pingji structure and latch mechanism, wherein:
Described Chang Pingji structure comprises left and right sides fixed support, Chang Pingquan, front and back link, chassis, ball holder, left and right sides fixed support is fixed in the ball of described hermetically-sealed instrument storehouse, hold about normal flat circle and articulate with left and right sides fixed support respectively, the front and back end of normal flat circle articulates with the upper end of front and back link respectively, the lower end of front and back link is fixed with the front and back end on chassis respectively, the bottom surface on chassis is fixed in the ball holder, the axis quadrature that forms between the axis that forms between the support bracket fastened center, the left and right sides and the center of front and back link;
Described latch mechanism comprises spherical support, electric lifting mechanism, base, base is fixed in the ball of described hermetically-sealed instrument storehouse, electric lifting mechanism is contained on the base, and spherical the support by electric lifting mechanism drives lifting, can be tight against the lower camber side of described ball holder after spherical support is risen.
3. broadband ocean bottom seismograph as claimed in claim 2 is characterized in that:
Described spherical the support is identical arc surface of radian and uniform pit with the surface of contact of ball holder.
4. broadband ocean bottom seismograph as claimed in claim 2 is characterized in that:
Described data acquisition unit, seismometer, Chang Pingquan are installed on the chassis of described Chang Pingji structure, and two fixed supports about ball inside, hermetically-sealed instrument storehouse only need be fixed are so that debugging and assembling.
5. broadband ocean bottom seismograph as claimed in claim 1 is characterized in that:
Described electrocorrosion releasing mechanism comprises a fuse and the fuseboard that is fixed on the described web joint, the two ends of fuseboard respectively are embedded a fuse pulling block, establish the coiling stake on each fuse pulling block, the central authorities of fuseboard are provided with positive and negative electrode, some coiling stakes, compressing tablet, fuse is walked around each coiling stake on fuseboard and the fuse pulling block via negative electrode, the two ends of this fuse are compressed by compressing tablet, and each fuse pulling block and fuseboard are fixed together, and each fuse pulling block is connected with described coupling shelf through wire rope.
6. broadband ocean bottom seismograph as claimed in claim 1 is characterized in that:
Permeable hole gathers on the described web joint.
7. broadband ocean bottom seismograph as claimed in claim 1 is characterized in that:
Described seismometer is a broadband dynamic balance reaction type seismometer, and frequency band range is 40 seconds to 40 hertz, seismometer is built-in to be realized ± and the electronics balancing controls of 3 ° setting range.
8. broadband ocean bottom seismograph as claimed in claim 1 is characterized in that:
Described battery is contained in the battery case that plays vibration damping and protection galvanic action of hardhead sponge making, and battery case is directly put into the battery compartment ball.
9. broadband ocean bottom seismograph as claimed in claim 5 is characterized in that:
Described coupling shelf is made up of two vesica piscises up and down, several support iron pipes of being connected between two vesica piscises; weld angle bar on the part iron pipe; wear screw rod on the angle bar, screw rod is affixed with the wire rope that is connected described fuse pulling block, described two protecting sheathings be placed on this coupling shelf above.
10. broadband ocean bottom seismograph as claimed in claim 1 is characterized in that:
Described hermetically-sealed instrument storehouse ball also is equipped with GPS, electronic compass, data radio station and signal lamp.
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| CN200910093585A CN101672927A (en) | 2009-09-25 | 2009-09-25 | Broadband ocean bottom seismograph |
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| CN200910093585A CN101672927A (en) | 2009-09-25 | 2009-09-25 | Broadband ocean bottom seismograph |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399359A (en) * | 2013-08-21 | 2013-11-20 | 国家海洋局第二海洋研究所 | Benthonic geophysical observation device |
| CN105319596A (en) * | 2015-12-03 | 2016-02-10 | 上海云灵信息技术有限公司 | Universal self-sinking and self-floating type seabed seismograph |
| CN105910574A (en) * | 2016-04-05 | 2016-08-31 | 中国科学院南海海洋研究所 | Seabed subbottom observation platform |
| CN107121130A (en) * | 2017-06-27 | 2017-09-01 | 贵州省质安交通工程监控检测中心有限责任公司 | A kind of side slope multi-angle offsets monitoring early-warning device |
| CN107167838A (en) * | 2017-05-25 | 2017-09-15 | 西安思坦测控技术有限公司 | A kind of land vibroseis target positioning piezo-type sensor |
| CN107290789A (en) * | 2017-05-09 | 2017-10-24 | 中国石油天然气集团公司 | A kind of marine electromagnetic acquisition station |
| CN107356959A (en) * | 2017-06-27 | 2017-11-17 | 中国地震局工程力学研究所 | Integral sensor leveling device |
| CN107782338A (en) * | 2017-10-19 | 2018-03-09 | 中国科学院深海科学与工程研究所 | The full profiling observation turbulent closure scheme section plotter in deep-sea |
| CN108983294A (en) * | 2018-06-22 | 2018-12-11 | 南方科技大学 | A kind of submarine seismograph electromagnetic release device and submarine seismograph |
| CN109884689A (en) * | 2019-03-08 | 2019-06-14 | 太原理工大学 | Seabed micro-earthquakes sensor carrying platform |
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| CN115807834A (en) * | 2023-02-06 | 2023-03-17 | 天津大学 | Shock attenuation formula seabed reference station |
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| CN103399359A (en) * | 2013-08-21 | 2013-11-20 | 国家海洋局第二海洋研究所 | Benthonic geophysical observation device |
| CN105319596A (en) * | 2015-12-03 | 2016-02-10 | 上海云灵信息技术有限公司 | Universal self-sinking and self-floating type seabed seismograph |
| CN105319596B (en) * | 2015-12-03 | 2018-04-13 | 上海云灵信息技术有限公司 | It is general from floatable submarine seismograph |
| CN105910574A (en) * | 2016-04-05 | 2016-08-31 | 中国科学院南海海洋研究所 | Seabed subbottom observation platform |
| CN105910574B (en) * | 2016-04-05 | 2017-06-23 | 中国科学院南海海洋研究所 | A kind of seabed base observation platform |
| CN107290789A (en) * | 2017-05-09 | 2017-10-24 | 中国石油天然气集团公司 | A kind of marine electromagnetic acquisition station |
| CN107167838A (en) * | 2017-05-25 | 2017-09-15 | 西安思坦测控技术有限公司 | A kind of land vibroseis target positioning piezo-type sensor |
| CN107356959B (en) * | 2017-06-27 | 2023-05-23 | 中国地震局工程力学研究所 | Integrated sensor level adjusting device |
| CN107121130A (en) * | 2017-06-27 | 2017-09-01 | 贵州省质安交通工程监控检测中心有限责任公司 | A kind of side slope multi-angle offsets monitoring early-warning device |
| CN107356959A (en) * | 2017-06-27 | 2017-11-17 | 中国地震局工程力学研究所 | Integral sensor leveling device |
| CN107782338A (en) * | 2017-10-19 | 2018-03-09 | 中国科学院深海科学与工程研究所 | The full profiling observation turbulent closure scheme section plotter in deep-sea |
| WO2019242720A1 (en) * | 2018-06-22 | 2019-12-26 | 南方科技大学 | Electromagnetic release device for submarine seismograph, and submarine seismograph |
| CN108983294A (en) * | 2018-06-22 | 2018-12-11 | 南方科技大学 | A kind of submarine seismograph electromagnetic release device and submarine seismograph |
| CN108983294B (en) * | 2018-06-22 | 2023-07-28 | 南方科技大学 | Electromagnetic release device for submarine seismograph and submarine seismograph |
| CN109884689A (en) * | 2019-03-08 | 2019-06-14 | 太原理工大学 | Seabed micro-earthquakes sensor carrying platform |
| CN113900062A (en) * | 2021-12-09 | 2022-01-07 | 浙江大学 | AUV underwater recovery electromagnetic guiding device |
| CN115807834A (en) * | 2023-02-06 | 2023-03-17 | 天津大学 | Shock attenuation formula seabed reference station |
| CN115807834B (en) * | 2023-02-06 | 2023-06-09 | 天津大学 | Shock-absorbing submarine reference station |
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