CN102637349A - Rapid vibration collection instrument for ocean platform structure - Google Patents
Rapid vibration collection instrument for ocean platform structure Download PDFInfo
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- CN102637349A CN102637349A CN2012100670292A CN201210067029A CN102637349A CN 102637349 A CN102637349 A CN 102637349A CN 2012100670292 A CN2012100670292 A CN 2012100670292A CN 201210067029 A CN201210067029 A CN 201210067029A CN 102637349 A CN102637349 A CN 102637349A
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Abstract
The invention provides a rapid vibration collection instrument for an ocean platform structure. The rapid vibration collection instrument comprises a plurality of wireless modules, a serial server and a computer, wherein the wireless modules are connected with the computer through the serial server; the number of the wireless modules is nine, wherein eight of the wireless modules are wireless data channel modules, and the other one is a wireless control channel module, and the nine wireless modules are all connected with the computer through the serial server in a way that an external part is connected with a standard bus and a USB (Universal Serial Bus). The problems of complexity in distribution and high maintenance cost of the traditional vibration collection instrument are effectively solved while reliable transmission of data is ensured; meanwhile, the wiring cost and the wiring time are reduced, and the rapid vibration collection instrument is convenient to mount and dismount; and the rapid vibration collection instrument has the effects of high speed, wireless, high precision, good reliability and the like.
Description
Technical field
The present invention relates to a kind of fast vibration Acquisition Instrument of offshore platform structure.
Background technology
Offshore platform structure is the great basic facility of offshore petroleum resources exploitation, is the base of offshore production operation and life.The offshore platform structure long service is in abominable marine environment; Receive the influence of various loads and environment; The drag decay is very obvious, not only can cause great economic loss and casualties in case have an accident to damage, and also possibly cause serious environmental to pollute and the society and politics influence.Therefore, to offshore platform structure monitor, the evaluation of detection and reliability is very necessary.
Because offshore platform structure can not interrupt using and involving great expense, and should be harmless or little damage to its method of carrying out safety assessment.Range estimation is general lossless detection method, but range estimation has its limitation, is insecure.Other Dynamic Non-Destruction Measurement all belongs to the structure partial damage detecting method like X-ray check, ultrasound detection, industry CT etc.; These technology only are used for the known situation of damage field, also require special testing apparatus and professional and technical personnel; Therefore, these methods are inconvenient to the detection of ocean platform, and also are expensive.
Compare with said method, then simple relatively based on the lossless detection method of vibration-testing, cost is lower.The ultimate principle of this method is: utilize structure is vibrated the data that actual measurement obtains, through the variation of parameter recognition technology judgement structural dynamic parameter, thereby decision structure has the position and the degree of not damaged, damage.
At present, it generally is the various relevant parameters that utilize the sensor acquisition structure that offshore platform structure is carried out vibration-testing, the data that the combined with intelligent algorithm process collects, the state that draws offshore platform structure at last with take appropriate measures.Sensor unit just can be controlled and begun vibrating data collection after arranging on the offshore platform structure by the vibration acquisition appearance; The vibration acquisition appearance is analyzed, is calculated obtaining the vibration situation of offshore platform structure the data that collect, thereby judges that offshore platform structure has the position and the degree of not damaged and damage.But that traditional vibration acquisition appearance exists more is bulky, complex structure, involve great expense, defective such as function can't be expanded, brought some problems to practical application.
Day by day the raising of growing, the computing power of Along with computer technology, computing machine has series of characteristics such as processing speed is fast, precision is high, good reliability, more and more receives people's favor, has obtained using widely.The applying virtual technical device is controlled, vibration data is gathered sensor unit on computers; The technology that the application embedded software is analyzed and calculated the data that collect is quite general; Become a new research direction of technology of instrument and meter just gradually; Therefore with the fast vibration Acquisition Instrument of computer technology application Yu Haiyang platform structure, make its can be according to the Non-Destructive Testing principle of vibration-testing and combined with virtual technical device and to offshore platform structure monitor, the evaluation of detection and reliability is purpose of design of the present invention.
Summary of the invention
Fundamental purpose of the present invention is to overcome the above-mentioned shortcoming that existing product exists; And a kind of fast vibration Acquisition Instrument of offshore platform structure is provided; It comprises wireless module, serial server and computing machine; According to the characteristics of offshore platform structure self difficult wiring,, select for use serial server to guarantee that data are not transferred in the computing machine with not losing as far as possible with wireless module control and collection vibration data; The fast vibration acquisition software is housed in this computing machine, has measuring accuracy height, good stability, accurate, the extendible effect of function of calculating.
The objective of the invention is to realize by following technical scheme.
The fast vibration Acquisition Instrument of offshore platform structure of the present invention is characterized in that: comprise a plurality of wireless modules, serial server and computing machine; These a plurality of wireless modules are connected with computing machine through serial server.
The fast vibration Acquisition Instrument of aforesaid offshore platform structure is characterized in that: comprise 9 wireless modules, 1 serial server and a computing machine; 8 is the radio data channels module in these 9 wireless modules, and 1 is the radio control channel module, all is connected with computing machine through the mode of this serial server with Peripheral Component Interconnect STD bus (PCI) and USB.
The fast vibration Acquisition Instrument of aforesaid offshore platform structure is characterized in that, said wireless module is made up of bandpass filtering, matching network, radio frequency amplification front end, RF transceiver, single-chip microcomputer, general serial data bus (UART) serial port; This bandpass filtering, matching network, radio frequency amplify front end and RF transceiver is connected in series through electronic circuit successively; This single-chip microcomputer is the CPU of wireless module, and it is connected and mutual data transmission with RF transceiver through the I/O mouth, receives and sends with control signal; And single-chip microcomputer is connected with miscellaneous equipment through connected general serial data bus (UART) serial port, realizes serial communication; This bandpass filtering external antenna is used for the interference of elimination image frequency, attenuate acoustic noise and improves signal to noise ratio (S/N ratio); This matching network supplies to realize maximum power transfer; This radio frequency amplifies the external biasing circuit of front end and supplies to amplify radiofrequency signal, improves the emission received power; It is electrical signal conversion radiofrequency signal that this RF transceiver adopts modulation demodulation system.
UART:Universal Asynchronous Receiver/Transmitter, universal asynchronous reception, dispensing device are a kind of asynchronous serial communication agreements.UART is a kind of general serial data bus, is used for asynchronous communication.This bus two-way communication can realize full duplex transmission and reception.
The fast vibration Acquisition Instrument of aforesaid offshore platform structure is characterized in that, the miscellaneous equipment that said wireless module general serial data bus (UART) serial port connects comprises the serial server that adopts Peripheral Component Interconnect STD bus (PCI) and USB mode.
The fast vibration Acquisition Instrument of aforesaid offshore platform structure; It is characterized in that said serial server comprises that series arrangement register (EEPROM), Peripheral Component Interconnect STD bus (PCI) bus are changeed 8 serial ports general serial data bus (UART) chips, USB changes general serial data bus (UART) chip; General serial data bus (UART) serial port of these 8 radio data channels modules links to each other respectively with based on the commentaries on classics of the Peripheral Component Interconnect STD bus (PCI) in the serial server of Peripheral Component Interconnect STD bus (PCI) 8 serial ports general serial data bus (UART) chips, realizes the conversion of 8 road general serial data bus (UART) serial ports to Peripheral Component Interconnect STD bus (PCI); This series arrangement register (EEPROM) is with internal integrate circuit bus (I
2C) form links to each other with chip; Completion is changeed the storage of the internal configuration information of general serial data bus (UART) to Peripheral Component Interconnect STD bus (PCI), and passes through form and the compunication of Peripheral Component Interconnect STD bus (PCI) slot of computing machine with Peripheral Component Interconnect STD bus (PCI); General serial data bus (UART) serial port of this 1 radio control channel module adopts USB commentaries on classics general serial data bus (UART) chip to link to each other with computing machine.
The beneficial effect of the fast vibration Acquisition Instrument of offshore platform structure of the present invention, it solves the problem that laying is numerous and diverse, maintenance cost is high of traditional vibration acquisition appearance effectively when guaranteeing reliable data transmission; Simultaneously, practice thrift wiring cost, save the laying time, make things convenient for assembling and disassembling; Have quick, wireless, effects such as precision is high, good reliability.
Description of drawings:
Fig. 1 is the fast vibration Acquisition Instrument wireless module box structure synoptic diagram of offshore platform structure of the present invention.
Fig. 2 is the fast vibration Acquisition Instrument serial server box structure synoptic diagram of offshore platform structure of the present invention.
Fig. 3 is the fast vibration Acquisition Instrument one-piece construction block schematic diagram of offshore platform structure of the present invention.
Fig. 4 carries out the horizontal control experiment block diagram of low frequency single pendulum for the fast vibration Acquisition Instrument that uses offshore platform structure of the present invention.
Fig. 5 A carries out the experiment with simple pendulum time-domain analysis figure of 0.9m pendulum length for the fast vibration Acquisition Instrument that uses offshore platform structure of the present invention.
Fig. 5 B carries out the experiment with simple pendulum frequency-domain analysis figure of 0.9m pendulum length for the fast vibration Acquisition Instrument that uses offshore platform structure of the present invention.
Embodiment
The fast vibration Acquisition Instrument of offshore platform structure of the present invention, it comprises a plurality of wireless modules, serial server and computing machine; These a plurality of wireless modules are connected with computing machine through serial server.
Like Fig. 1, Fig. 2, shown in Figure 3, the fast vibration Acquisition Instrument of offshore platform structure of the present invention, it comprises 9 wireless modules, 1 serial server and a computing machine; 8 is the radio data channels module in these 9 wireless modules, and 1 is the radio control channel module, all is connected with computing machine through the mode of this serial server with Peripheral Component Interconnect STD bus (PCI) and USB.
Like Fig. 1, Fig. 2, shown in Figure 3, the fast vibration Acquisition Instrument of offshore platform structure of the present invention, wherein, wireless module is made up of bandpass filtering, matching network, radio frequency amplification front end, RF transceiver, single-chip microcomputer, general serial data bus UART serial port; This bandpass filtering, matching network, radio frequency amplify front end and RF transceiver is connected in series through electronic circuit successively; This single-chip microcomputer is the CPU of wireless module, and it is connected and mutual data transmission with RF transceiver through the I/O mouth, receives and sends with control signal; And single-chip microcomputer is connected with miscellaneous equipment through connected general serial data bus (UART) serial port, realizes serial communication; This bandpass filtering external antenna is used for the interference of elimination image frequency, attenuate acoustic noise and improves signal to noise ratio (S/N ratio); This matching network supplies to realize maximum power transfer; This radio frequency amplifies the external biasing circuit of front end and supplies to amplify radiofrequency signal, improves the emission received power; It is electrical signal conversion radiofrequency signal that this RF transceiver adopts modulation demodulation system.
UART:Universal Asynchronous Receiver/Transmitter, universal asynchronous reception, dispensing device are a kind of asynchronous serial communication agreements.UART is a kind of general serial data bus, is used for asynchronous communication.This bus two-way communication can realize full duplex transmission and reception.
Wherein, the miscellaneous equipment of wireless module general serial data bus (UART) serial port connection comprises the serial server that adopts Peripheral Component Interconnect STD bus (PCI) and USB mode; Serial server comprises that series arrangement register (EEPROM), Peripheral Component Interconnect STD bus (PCI) bus are changeed 8 serial ports general serial data bus (UART) chips, USB changes general serial data bus (UART) chip; General serial data bus (UART) serial port of these 8 radio data channels modules links to each other respectively with based on the commentaries on classics of the Peripheral Component Interconnect STD bus (PCI) in the serial server of Peripheral Component Interconnect STD bus (PCI) 8 serial ports general serial data bus (UART) chips, realizes the conversion of 8 road general serial data bus (UART) serial ports to Peripheral Component Interconnect STD bus (PCI); This series arrangement register (EEPROM) is with internal integrate circuit bus (I
2C) form links to each other with chip; Completion is changeed the storage of the internal configuration information of general serial data bus (UART) to Peripheral Component Interconnect STD bus (PCI), and passes through form and the compunication of Peripheral Component Interconnect STD bus (PCI) slot of computing machine with Peripheral Component Interconnect STD bus (PCI); General serial data bus (UART) serial port of this 1 radio control channel module adopts USB commentaries on classics general serial data bus (UART) chip to link to each other with computing machine.
Like Fig. 1, Fig. 2, shown in Figure 3, the use of the fast vibration Acquisition Instrument of offshore platform structure of the present invention:
1, detect the place laying wireless vibration acquisition node of vibration signal at needs, power-on is not worked, and gets into low-power consumption monitor channel state;
2, open computing machine, and wireless module and serial server are powered on, guarantee its operate as normal;
3, open the interior fast vibration acquisition software of computing machine, use the basic configuration module that the status information of each acquisition node is configured;
4, open the real-time waveform monitoring modular, set SF, warehousing time, store path etc. on demand, send acquisition start command to each acquisition node;
5, each node at first judges whether conform to local address after receiving acquisition instructions, if conform to then response instruction, begins to gather vibration signal, and data through being wirelessly transmitted to the fast vibration Acquisition Instrument;
6, after image data is accomplished, send out the end acquisition instructions, gather the vibration signal process and promptly terminate to each acquisition node;
7, the data that collect the fast vibration Acquisition Instrument derive, so that the vibration situation of analytical structure further.
Acquisition software in the computing machine mainly is made up of modules such as basic configuration, real-time waveform monitoring, historical wave shape playback, data layout derivation, help document; Wherein the basic configuration module is used for node and port information are configured.
The content that does not describe in the present embodiment is a prior art, so no longer give unnecessary details.
The principle of work of the fast vibration Acquisition Instrument of offshore platform structure of the present invention: fast vibration Acquisition Instrument controlled in wireless is gathered a plurality of nodes of vibration data; Multinode is handled returning data through wireless after collecting the vibration data of offshore platform structure in the vibration acquisition appearance, can obtain the structural vibrations situation to data analysis.
Fast vibration Acquisition Instrument through offshore platform structure of the present invention; Accomplished following control experiment:, designed the horizontal control experiment of a low frequency single pendulum system for this reason and simulated the ocean platform low-frequency vibration because the fast vibration Acquisition Instrument of the novel sea platform structure that designed will be applied in the middle of this type of offshore platform structure low frequency configuration thing.Single pendulum is a kind of experimental provision of the most simply measuring the horizontal direction low-frequency vibration,
By the cycle formula of single pendulum under small size swing condition:
Can find out that the pendulum length difference is that the vibration period is different, the frequency of vibration is also inequality.At first be placed on dynamic balance acceleration transducer and piezoelectric acceleration sensor jointly the centre position of single pendulum hanging basket in the experimentation; The fast vibration Acquisition Instrument of dynamic balance acceleration transducer and novel sea platform structure (being wireless receiving node among Fig. 4) is accomplished the wireless collection of horizontal vibration data jointly; And compare with wired collection result that piezoelectric acceleration sensor links to each other with the NI Acquisition Instrument, the experiment block diagram is as shown in Figure 4.In the control experiment process; Choosing pendulum length is that the 0.9m single pendulum is as case; The fast vibration Acquisition Instrument of novel sea platform structure and NI Acquisition Instrument SF all are made as 100Hz; The data of gathering are carried out time-domain and frequency-domain handle, its time domain and frequency-domain waveform are as shown in Figure 5: can find out wireless identical basically with wireline waveforms through time-domain diagram; Table 1 has also provided the frequency-domain analysis of single pendulum natural frequency, wired and wireless collection, and difference is less, all in controlled range.But the fast vibration Acquisition Instrument of novel sea platform structure has reflected the vibration situation of low frequency signal more expediently with its wireless characteristic.
Table 1 0.9m pendulum length frequency
Draw through the experimental comparison analysis; Because of adopting the data of wireless mode pick-up transducers; Can overcome the problem of traditional vibration acquisition appearance difficult wiring in actual engineering; Practiced thrift the cable cost, save the laying time, reduced the maintenance cost that produces because of the cable problem, wireless mode also makes things convenient for assembling and disassembling, is fit to very much the demand of ocean platform fast detecting.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. the fast vibration Acquisition Instrument of an offshore platform structure is characterized in that: comprise a plurality of wireless modules, serial server and computing machine; These a plurality of wireless modules are connected with computing machine through serial server.
2. the fast vibration Acquisition Instrument of offshore platform structure according to claim 1, it is characterized in that: said a plurality of wireless modules are 9, and said serial server is one, and said computing machine is one; 8 is the radio data channels module in these 9 wireless modules, and 1 is the radio control channel module, all is connected with computing machine through the mode of this serial server with Peripheral Component Interconnect STD bus (PCI) and USB.
3. the fast vibration Acquisition Instrument of offshore platform structure according to claim 1; It is characterized in that said wireless module is made up of bandpass filtering, matching network, radio frequency amplification front end, RF transceiver, single-chip microcomputer, general serial data bus (UART) serial port;
This bandpass filtering, matching network, radio frequency amplify front end and RF transceiver is connected in series successively; This single-chip microcomputer is the CPU of wireless module, and it is connected and mutual data transmission with RF transceiver through the I/O mouth, receives and sends with control signal; And single-chip microcomputer is connected with external unit through connected general serial data bus (UART) serial port, realizes serial communication.
4. the fast vibration Acquisition Instrument of offshore platform structure according to claim 3; It is characterized in that the external unit that said wireless module general serial data bus (UART) serial port connects comprises: the serial server that adopts Peripheral Component Interconnect STD bus (PCI) and USB mode.
5. the fast vibration Acquisition Instrument of offshore platform structure according to claim 1 and 2; It is characterized in that said serial server comprises that series arrangement register (EEPROM), Peripheral Component Interconnect STD bus (PCI) bus are changeed 8 serial ports general serial data bus (UART) chips, USB changes general serial data bus (UART) chip; General serial data bus (UART) serial port of these 8 radio data channels modules links to each other respectively with based on the commentaries on classics of the Peripheral Component Interconnect STD bus (PCI) in the serial server of Peripheral Component Interconnect STD bus (PCI) 8 serial ports general serial data bus (UART) chips, realizes the conversion of 8 road general serial data bus (UART) serial ports to Peripheral Component Interconnect STD bus (PCI); This series arrangement register (EEPROM) is with internal integrate circuit bus (I
2C) form links to each other with chip; Completion is changeed the storage of the internal configuration information of general serial data bus (UART) to Peripheral Component Interconnect STD bus (PCI), and passes through form and the compunication of Peripheral Component Interconnect STD bus (PCI) slot of computing machine with Peripheral Component Interconnect STD bus (PCI); General serial data bus (UART) serial port of this 1 radio control channel module adopts USB commentaries on classics general serial data bus (UART) chip to link to each other with computing machine.
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| CN2012100670292A CN102637349A (en) | 2012-03-14 | 2012-03-14 | Rapid vibration collection instrument for ocean platform structure |
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| CN2012100670292A CN102637349A (en) | 2012-03-14 | 2012-03-14 | Rapid vibration collection instrument for ocean platform structure |
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| CN104121981A (en) * | 2014-08-15 | 2014-10-29 | 青岛科技大学 | Remote wireless vibration monitoring device applied to offshore jacket ocean platform |
| CN106908143A (en) * | 2017-03-01 | 2017-06-30 | 中国海洋大学 | Ocean platform monitoring system and method |
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Cited By (3)
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| CN104121981A (en) * | 2014-08-15 | 2014-10-29 | 青岛科技大学 | Remote wireless vibration monitoring device applied to offshore jacket ocean platform |
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| CN106908143B (en) * | 2017-03-01 | 2019-04-26 | 中国海洋大学 | Ocean platform monitors system and method |
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Application publication date: 20120815 |