CN204374433U - The autonomous harvester of a kind of submarine blast bottom vibrations - Google Patents
The autonomous harvester of a kind of submarine blast bottom vibrations Download PDFInfo
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- CN204374433U CN204374433U CN201420859882.2U CN201420859882U CN204374433U CN 204374433 U CN204374433 U CN 204374433U CN 201420859882 U CN201420859882 U CN 201420859882U CN 204374433 U CN204374433 U CN 204374433U
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Abstract
The utility model provides the vibrations of a kind of submarine blast bottom autonomous harvester, comprises guide pole, locating piece, top cover, cylindrical shell, interface module, power module, acquisition module, integration module, core sensor module, base; Core sensor module comprises three-way vibration acceleration transducer, measures the vibration acceleration signal of radial direction, tangential and vertical direction simultaneously; Integration module degree of will speed up signal integration is converted into rate signal; Described acquisition module is intelligent high-speed data acquisition board, comprises signal conditioning circuit, analog to digital conversion circuit, microprocessor, data storage, data transmission, clock, temperature, parameter sub module stored.The utility model can at the appointed time start automatically, automatic detection, automatically trigger, automatically gather, workable.
Description
Technical field
The invention belongs to explosion earthquake field tests, particularly a kind of submarine blast bottom vibrations self-collection method and system.
Background technology
Current water-bed vibration test equipment mainly contains three types, a kind of is large-scale submarine seismograph OBS (patent 200910093585.5), this kind of seismograph is used for deep-water subsea seismic study, complete function, precision is very high, but bulky, complex structure, expensive, test for large-scale Marine Sciences for general; The second is large-scale bottom streamer formula sensor (patent 200910019112.0), sensor, data line, power lead are incorporated in towing cable, the acquisition instrument that measuring-signal is sent on towboat or above water platform by towing cable carries out record, need special towboat to coordinate and throw in and reclaim, system complex, handle inconvenience, and the vibrations of bottom surface can only be gathered, by water-bed noise and tectal affect large; The third is online shock sensor under water (patent 02281796.4), wave detector is placed in waterproof case, be inserted in water-bed overlayer, measuring-signal is sent on the bank by wave detector stube cable or water surface main frame carries out acquisition and recording, arrange and install all more loaded down with trivial details, and also existing equally and transmit the problems such as cable is large by water-bed noise effect compared with long, signal, water-proofing treatment is difficult.
Relative to general land blasting vibration test, the water-bed vibration test that submarine blast causes is more complicated and difficult.One is arrange difficulty under water.Due to the impact of water-bed circumstance complication and underwater construction operation, near quick-fried district, perspectivity can be poor under water, and usual way can only be rely on professional frogman that seismological sensor is laid in measuring point under water, and cost and danger are all higher.Two is fix difficulty under water.In order to obtain the true seismic signal of measuring point, must ensure that sensor and the reliable of measuring point are fixed, make to meet displacement continuity condition between sensor and water-bed rock mass, and there are stone riprap, mud and out-of-flatness in Natural Water bottom surface more, there is no effective adhesive for use in water at present, sensor and water-bed scar cannot reliably be fixed.Three is water-proofing treatment difficulties.Due to underwater wireless Signal transmissions difficulty, underwater sound propagation is subject to quick-fried district noise and floods, and current water-bed seismological sensor mainly transfers signals to ground data acquisition system by wire cable, in sensor and water, cable must carry out strict water-proofing treatment, otherwise once short circuit will cause device damage test failure.Four is that signal disturbing is serious.In water, surge, Blasting shock wave etc. all can cause comparatively strong jamming to wired signal transmission, produce additional noise, have a strong impact on the accuracy of test signal.Existing vibration test equipment and technology all cannot meet the request for utilization of the water-bed vibration survey of underwater drilling and blasting.
Summary of the invention
In order to overcome, the existing device structure of vibration test is under water complicated, installation is difficult, cable is long causes the shortcomings such as signal to noise ratio (S/N ratio) is not high, the invention provides a kind of water-bed vibrations autonomous collection three-dimensional sensor, this sensor adopts integrated off-line type to design, can long time standby, independently gather, inner structure is compact, rationally distributed, body seal waterproof, corrosion-resistant, carry, install and reclaim conveniently, can repeatedly use.
The autonomous harvester of a kind of submarine blast bottom vibrations, comprises guide pole, locating piece, top cover, cylindrical shell, interface module, power module, acquisition module, integration module, core sensor module, base;
Locating piece center is provided with tapped through hole, guide pole outer wall is provided with external thread, guide pole screws in the screw of locating piece, guide pole lower end is fixedly connected with top cover, locating piece bottom surface is pressed on top cover upper bottom surface, top cover bottom surface sealing cylinder housing upper end open, base seal cylindrical shell lower ending opening, described interface module, power module, acquisition module, integration module, core sensor module are positioned at cylindrical shell, and core sensor module is fixedly connected in base;
Described interface module is for laying power switch, power source charges interface, data transmission interface and status indicator lamp;
Core sensor module comprises three-way vibration acceleration transducer, measures the vibration acceleration signal of radial direction, tangential and vertical direction simultaneously;
Integration module degree of will speed up signal integration is converted into rate signal;
Described acquisition module is intelligent high-speed data acquisition board, comprises signal conditioning circuit, analog to digital conversion circuit, microprocessor, data storage, data transmission, clock, temperature, parameter sub module stored; Wherein signal conditioning circuit is three tunnels, its input end is connected with integration module, output terminal is connected with analog to digital conversion circuit input end, analog to digital conversion circuit output terminal is connected with microprocessor input, microprocessor also stores with data, data are transmitted, clock, temperature, parameter sub module stored are connected, and data transmission module is also connected with network interface;
Power module provides power supply for whole harvester.
The present invention compared with prior art, have the following advantages: (1) structure is simple, core sensor and acquisition system integrated design, eliminate in legacy test system transmission cable, avoid additional noise and underwater sealing problem that long cable brings, body seal waterproof anti-corrosion; (2) signal acquisition process is intelligent, start-up time, activation threshold value and sample frequency is set under water before laying, at the appointed time automatically can start, automatic detection, automatically trigger, automatically gather, be completed i.e. recyclable reading data, workable; (3) adopt three-dimensional acceleration transducer, volume is less than speed pickup used on the market, and complete machine carries, be set using conveniently, dependable performance.
Below in conjunction with accompanying drawing, structure of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is vertical cut-open view of the present invention;
Fig. 2 is the electronic system architecture block diagram of acquisition module of the present invention;
Fig. 3 is the discrete figure of module 3D of the present invention;
Fig. 4 is integration module circuit block diagram of the present invention;
Fig. 5 is signal conditioning circuit schematic diagram of the present invention;
Fig. 6 is supply voltage self-checking circuit figure of the present invention;
Fig. 7 is microcontroller circuit schematic diagram of the present invention;
Fig. 8 is clock submodular circuits schematic diagram of the present invention;
Fig. 9 is temperature submodular circuits schematic diagram of the present invention;
Figure 10 is parameter sub module stored circuit diagram of the present invention;
Figure 11 is acquisition method process flow diagram of the present invention;
Figure 12 is sensor of the present invention artwork under water;
Figure 13 is acquisition example figure of the present invention.
Embodiment
Composition graphs 1, the autonomous harvester of a kind of submarine blast bottom vibrations, comprises guide pole 1, locating piece 2, top cover 3, cylindrical shell 6, interface module 7, power module 8, acquisition module 9, integration module 10, core sensor module 11, base 12.
Locating piece 2 center is provided with tapped through hole, guide pole 1 top is provided with lifting hole(eyelet), guide pole 1 outer wall is provided with external thread, guide pole 1 screws in the screw of locating piece 2, guide pole 1 lower end is fixedly connected with top cover 3, locating piece 2 bottom surface is pressed on top cover 3 upper bottom surface, top cover 3 bottom surface sealing cylinder housing 6 upper end open, base 12 sealing cylinder housing 6 lower ending opening.Described locating piece 2 can change according to the size of boring, and this device and bore inner are fitted tightly, and anti-locking apparatus waves in the borehole; Locating piece 2 is made of metal simultaneously, can increase the weight of device, more easily sink to the bottom.
Top cover 3 bottom surface is provided with cylindrical top cover boss, and top cover 3 is connected with cylindrical shell 6 by screw; Between the upper surface of top cover 3 and cylindrical shell 6, gasket seal is set, between the inwall of top cover 3 and cylindrical shell 6, O-ring seals is set.
Base 12 upper bottom surface arranges base boss, and boss arranges the groove placing core sensor module 11, and base 12 is connected with cylindrical shell 6 by screw; Between the lower surface of base 12 and cylindrical shell 6, gasket seal is set, at least twice O-ring seals is set between the inwall of base 12 and cylindrical shell 6.Base 12 also plays the effect of clamp cylinders housing 6 internal module.
Described interface module 7, power module 8, acquisition module 9, integration module 10, core sensor module 11 are positioned at cylindrical shell 6, and core sensor module 11 is fixedly connected on base 12:
Described interface module 7 is for laying power switch, power source charges interface 7-1, data transmission interface 7-2 and status indicator lamp;
Core sensor module 11 comprises three-way vibration acceleration transducer, measures the vibration acceleration signal of radial direction, tangential and vertical direction simultaneously;
Integration module 10 degree of will speed up signal integration is converted into rate signal;
Described acquisition module 9 is intelligent high-speed data acquisition board, composition graphs 2, comprises signal conditioning circuit, analog to digital conversion circuit, microprocessor, data storage, data transmission, clock, temperature, parameter sub module stored; Signal conditioning circuit is three tunnels, its input end is connected with integration module 10, output terminal is connected with analog to digital conversion circuit input end, analog to digital conversion circuit output terminal is connected with microprocessor input, microprocessor also stores with data, data are transmitted, clock, temperature, parameter sub module stored are connected, and data transmission module is also connected with network interface;
Power module 8 provides power supply for whole harvester.
Particularly, in the present invention, three-way vibration acceleration transducer the key technical indexes is as follows:
A) sensitivity: 150 ± 5%mv/g;
B) measurement range: ± 30g;
C) shock-resistant: 500g (not powering);
D) frequency range: 0.5 ~ 500Hz (± 1dB);
E) fixing resonance frequency: ~ 10KHz;
F) cross sensitivity ratio :≤5%;
G) working temperature :-40 ~ 120 DEG C;
H) amplitude is linear :≤± 1%;
I) constant current source voltage :+15 ~ 28VDC;
J) bias voltage: 7.5 ~ 8VDC;
K) output impedance :≤100 Ω;
L) mounting means:
through hole installs floating isolation (between shell and line resistance > 20M Ω);
M) structure: shear;
N) shell: stainless steel.
Particularly, composition graphs 4, integration module comprises constant current source, integrating circuit and amplifier.The function that integration module realizes is to provide the constant current required for acceleration transducer, is converted to rate signal through integrating circuit, then rate signal is amplified output.In integration module, main circuit wants technical performance index to be:
A) sensitivity: 10mv/Unit
B) export: ± 10V/5mA
C) frequency range: 5 ~ 500Hz (± 1dB)
D) power supply: ± 12V/60mA
E) working temperature :-10 DEG C ~+55 DEG C
F) relative humidity: <85% (40 DEG C)
Particularly, composition graphs 5, three road signal conditioning circuits are made up of with circuit penetrating of forming of operational amplifier, and effect improves input impedance, increases driving force.
First via modulate circuit input termination the 4th port, 4th port is contact resistance R1 respectively, the R1 other end connects positive input and the R2 of amplifier U1A, R2 other end ground connection, the output terminal of amplifier U1A is connected with the reverse input end of amplifier U1A by resistance R3, and conditioned signal is exported to analog to digital conversion circuit by the output terminal of amplifier U1A;
Second road modulate circuit input termination the 5th port, 5th port is contact resistance R4 respectively, the R4 other end connects positive input and the R5 of amplifier U1B, R5 other end ground connection, the output terminal of amplifier U1B is connected with the reverse input end of amplifier U1B by resistance R6, and conditioned signal is exported to analog to digital conversion circuit by the output terminal of amplifier U1B;
3rd road modulate circuit input termination the 6th port, 6th port is contact resistance R7 respectively, the R7 other end connects positive input and the R8 of amplifier U1C, R8 other end ground connection, the output terminal of amplifier U1A is connected with the reverse input end of amplifier U1C by resistance R9, and conditioned signal is exported to analog to digital conversion circuit by the output terminal of amplifier U1C;
1st port meets+15V, and the 2nd port meets-15V, the 3rd port ground connection.The resistance of described resistance R1, R3, R4, R6, R7, R9 is 10k Ω; Resistance R2, R5, R8 are organized as 1M Ω; The main performance index of described amplifier U1A, U1B, U1C:
A) power range :+2.7V+36V (± 1.35V ± 18V);
B) low noise: 14nV/ √ Hz;
C) low offset drifts: 0.3 μ V/ DEG C;
D) input range comprises negative supply;
E) input range moves to positive supply;
F) rail exports to rule;
G) gain bandwidth (GB): 3MHz;
H) low quiescent current: 1.9mA;
I) high common mode inhibition: 120dB;
J) low input bias current: 8pA.
As a modification of the present invention, the invention provides self-checking circuit, composition graphs 6, other end difference contact resistance R15, electric capacity C9 and resistance R10, the resistance R10 other end difference contact resistance R11 of power supply connecting resistance R13, resistance R13 and the positive input of amplifier, the other end ground connection of resistance R15, electric capacity C9 and resistance R11, amplifier out is connected with amplifier inverting input by resistance R12, and the voltage after conversion is delivered to analog to digital conversion circuit, for System self-test by amplifier out.
Particularly, microprocessor module adopts the ARM chip STM32F103 of 32 Cortex-M3 kernels of NXP company to build, composition graphs 7, STM32F103 pin 12 is connected with electric capacity C31 and oscillator respectively, STM32F103 pin 13 is connected with electric capacity C32 and the oscillator other end respectively, and electric capacity C31 and electric capacity C32 is ground connection respectively; STM32F103 pin 14 is by electric capacity C33 ground connection; STM32F103 pin 21 and pin 22 meet VDDA; STM32F103 pin 19 and pin 20 are by resistance R22 ground connection; STM32F103 pin pin 11,28,50,75,100 meets 3.3V; STM32F103 pin 10,27,49,74,99,37 ground connection; STM32F103 pin 94 is connecting resistance R21 and J_ISP pin 1, J_ISP pin 2 ground connection respectively, another termination 3.3V of resistance R21; STM32F103 pin 85 meets 3.3V by resistance R25; STM32F103 pin 86 meets 3.3V by resistance R26; STM32F103 pin 54 meets 3.3V by resistance R27; STM32F103 pin 53 meets 3.3V by resistance R28.Described electric capacity C31, C32, C33 are 10pF, and resistance R21, R22, R25, R26, R27, R28 are organized as 10k Ω.
Particularly, data memory module requires can RAD (rapid access data), has power failure data and does not lose function, and require that data capacity is large, select the ferroelectric memory of Fuji Tsu in the design, model is MB85R4002A chip.
Particularly, data transmission module is made up of ethernet network protocol chip, isolating transformer and peripheral circuit thereof.Realize that host computer reads the self-inspection of data acquisition system (DAS), optimum configurations, acquisition system parameter, image data transfer function.The acp chip of the design adopts the W5300 Ethernet protocol chip of WIZnet company, inner integrated 10/100M ethernet controller, MAC and ICP/IP protocol stack.
Particularly, the effect of clock module is to provide and tests start-up time, the information such as test period.The present invention adopts PCF8563 real-time timepiece chip, with farad capacitor power supply in support, to ensure that real-time clock still normally runs when acquisition system power down.Composition graphs 8, PCF8563 pin 1 connects oscillator one end, and PCF8563 pin 2 connects the oscillator other end; PCF8563 pin 4 ground connection; PCF8563 pin 3 connecting resistance R95, the resistance R95 other end connects 3.3V and diode D3 anode respectively, diode D3 negative electrode connects PCF8563 pin 8, resistance R96 respectively and has electrode capacitance C100 positive terminal, there is electrode capacitance other end ground connection, the resistance R96 other end connects farad capacitor, farad capacitor other end ground connection.Resistance R95 resistance is 10k Ω, and have electrode capacitance C100wei10 μ F, resistance R96 is 30k Ω, and farad capacitor is 1F.
Particularly, the effect of thermal module is the test ambient temperature measuring test site, for follow-up analyses of shake provides reference information.Composition graphs 9, thermal module is formed primarily of semiconductor temperature sensor DS18B20.Wherein DS18B20 pin 1 ground connection, DS18B20 pin 2 is connecting resistance RT and microcontroller circuit respectively, and DS18B20 pin 3 connects the other end of 3.3V and resistance RT respectively.Resistance RT is organized as 4.7k Ω.
Particularly, parameter memory module is used for storage system parameters, as test start-up time, gathers silence period between stage casing and section, the parameters such as sampling rate and the threshold value thresholding that automatically triggers.In the present invention, parameter stores and adopts AT24C02EEPROM electrically-erasable storer.In conjunction with Figure 10, the equal ground connection of AT24C02EEPROM pin 1 to pin 4, AT24C02EEPROM pin 8 meets 3.3V, electric capacity C61, resistance R_SCL and resistance R_SDA respectively, AT24C02EEPROM pin 7 connects the electric capacity C61 other end and ground respectively, AT24C02EEPROM pin 5 connects PCF8563 real-time timepiece chip pin 6 and resistance R_SCL, AT24C02EEPROM pin 6 meets PCF8563 real-time timepiece chip pin 5 and resistance R_SDA.Electric capacity C61 is 104 μ F, resistance R_SCL and resistance R_SDA is 4.7k Ω.
Particularly, in native system, all power is provided by 3.7V poly-lithium battery.
Technical indicator of the present invention:
A kind of submarine blast bottom vibrations self-collection method, comprises the following steps.
Step 1, provides the vibrations of the submarine blast bottom autonomous harvester.
Step 2, utilizes the suitable distance in Zuan Bao Chuan Yubao district under water to select the more complete water-bed region of lithology, basement rock gets out 0.5 meter of dark mounting hole.Arrange after gathering initial set-up time, activation threshold value, sample frequency, silence period, times of collection, assemble and seal complete, in the lifting hole(eyelet) of guide pole top, fasten hawser and connect buoy, autonomous pick-up transducers is put into the mounting hole on water-bed rock along rig sleeve, extract sleeve subsequently, withdraw and bore quick-fried ship.
Step 3, harvester starts gather submarine blast oscillatory acceleration signal and be converted into rate signal, writing speed signal:
Step 3.1, arrives predetermined initial set-up time, and harvester starts,
Step 3.2, harvesters etc. are to be triggered;
Step 3.3, when oscillatory acceleration signal reaches the activation threshold value of setting, harvester starts to obtain vibration signal according to the sample frequency of setting;
Step 3.4, is converted into rate signal and record by integration module by the acceleration signal of acquisition;
Step 3.5, through unitary sampling duration, sampling apparatus enters the silence period, and described unitary sampling duration is the memory capacity of sampling apparatus and the ratio of sample frequency and times of collection, and namely memory capacity is divided by the product of sample frequency and times of collection;
Step 3.6, the silence period terminates, and harvester restarts and performs step 3.2-3.5, until step 3 terminates after reaching the times of collection of setting.
Step 4, after submarine blast terminates, gathers and terminates, take out autonomous pick-up transducers by buoy and hawser, sense data can carry out treatment and analysis by dedicated data line and computer interface software UNICOM.
Embodiment one
Step 1, presses assembly relation and assembles complete by each for all the other in harvester except locating piece, guide pole and top cover module;
Step 2, is communicated with the network interface in interface module with host computer network interface by data line, and upper computer software interface sets correlation acquisition parameter.Initial set-up time 8:00:00, activation threshold value 0.05V (corresponding velocity of vibration 0.175cm/s), sample frequency 8000bps, silence period 5s, gather 10 times at most, then each collection signal duration is 43688b/8000bps=5.461s.Setting completed, takes off data line, assembles complete, be positioned in the boring of dark 500mm, diameter of phi 100mm on water-bed rock by locating piece, guide pole and top cover and cylindrical shell;
Step 3, harvester gathers submarine blast velocity of vibration signal and stores;
Step 3.1, arrives predetermined initial set-up time 8:00:00, and harvester starts;
Step 3.2, harvesters etc. are to be triggered;
Step 3.3, when water-bed velocity of vibration reaches the activation threshold value 0.175cm/s of setting, harvester starts to record velocity of vibration signal;
Step 3.4, harvester carries out sample conversion according to the sample frequency 8000bps of setting to rate signal and stores;
Step 3.5, through 5.461s sampling duration, the collection of this segment signal terminates, and harvester starts the 2s that mourns in silence;
Step 3.6, the 2s silence period terminates, and harvester restarts and performs step 3.2-3.5, until step 3 terminates after reaching the times of collection of setting.Step 3 flow process as shown in figure 13.
Step 4, gathers and terminates, from boring, take out harvester, connects host computer, reads the water-bed vibration data collected in interface software.
Claims (3)
1. the autonomous harvester of submarine blast bottom vibrations, it is characterized in that, comprise guide pole (1), locating piece (2), top cover (3), cylindrical shell (6), interface module (7), power module (8), acquisition module (9), integration module (10), core sensor module (11), base (12);
Locating piece (2) center is provided with tapped through hole, guide pole (1) outer wall is provided with external thread, guide pole (1) screws in the screw of locating piece (2), guide pole (1) lower end is fixedly connected with top cover (3), locating piece (2) bottom surface is pressed on top cover (3) upper bottom surface, top cover (3) bottom surface sealing cylinder housing (6) upper end open, base (12) sealing cylinder housing (6) lower ending opening, described interface module (7), power module (8), acquisition module (9), integration module (10), core sensor module (11) is positioned at cylindrical shell (6), core sensor module (11) is fixedly connected in base (12),
Described interface module (7) is for laying power switch, power source charges interface, data transmission interface and status indicator lamp;
Core sensor module (11) comprises three-way vibration acceleration transducer, measures the vibration acceleration signal of radial direction, tangential and vertical direction simultaneously;
Integration module (10) degree of will speed up signal integration is converted into rate signal;
Described acquisition module (9) is intelligent high-speed data acquisition board, comprises signal conditioning circuit, analog to digital conversion circuit, microprocessor, data storage, data transmission, clock, temperature, parameter sub module stored; Wherein signal conditioning circuit is three tunnels, its input end is connected with integration module (10), output terminal is connected with analog to digital conversion circuit input end, analog to digital conversion circuit output terminal is connected with microprocessor input, microprocessor also stores with data, data are transmitted, clock, temperature, parameter sub module stored are connected, and data transmission module is also connected with network interface;
Power module (8) provides power supply for whole harvester.
2. the autonomous harvester of submarine blast bottom vibrations according to claim 1, it is characterized in that, top cover (3) bottom surface is provided with cylindrical top cover boss, and top cover (3) is connected with cylindrical shell (6) by screw; Between the upper surface of top cover (3) and cylindrical shell (6), gasket seal is set, between the inwall of top cover (3) and cylindrical shell (6), O-ring seals is set.
3. the autonomous harvester of submarine blast bottom vibrations according to claim 1 and 2, it is characterized in that, base (12) upper bottom surface arranges base boss, boss arranges the groove placing core sensor module (11), and base (12) is connected with cylindrical shell (6) by screw; Between the lower surface of base (12) and cylindrical shell (6), gasket seal is set, at least twice O-ring seals is set between the inwall of base (12) and cylindrical shell (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420859882.2U CN204374433U (en) | 2014-12-30 | 2014-12-30 | The autonomous harvester of a kind of submarine blast bottom vibrations |
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| CN201420859882.2U CN204374433U (en) | 2014-12-30 | 2014-12-30 | The autonomous harvester of a kind of submarine blast bottom vibrations |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570059A (en) * | 2014-12-30 | 2015-04-29 | 中国人民解放军理工大学 | Automatic underwater blasting vibration collection method and device |
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2014
- 2014-12-30 CN CN201420859882.2U patent/CN204374433U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570059A (en) * | 2014-12-30 | 2015-04-29 | 中国人民解放军理工大学 | Automatic underwater blasting vibration collection method and device |
| CN104570059B (en) * | 2014-12-30 | 2017-06-27 | 中国人民解放军理工大学 | A kind of water-bed vibrations self-collection method and the device of underwater demolition |
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