CN101840007B - Multi-device concatenation data transmission performance testing method - Google Patents
Multi-device concatenation data transmission performance testing method Download PDFInfo
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- CN101840007B CN101840007B CN 200910080329 CN200910080329A CN101840007B CN 101840007 B CN101840007 B CN 101840007B CN 200910080329 CN200910080329 CN 200910080329 CN 200910080329 A CN200910080329 A CN 200910080329A CN 101840007 B CN101840007 B CN 101840007B
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Abstract
The invention relates to a multi-device concatenation data transmission performance testing method. Eight acquisition stations are connected into a loop in a ring mode by field seismic cable unshielded twisted pairs; after being in sending-receiving connection with each other end to end, the eight acquisition stations are connected with a computer series port by a pc machine; the pc machine serving as an upper computer sends a command; after being sent by a station body connected with the pc machine, a packet is circularly transmitted in the loop of the station body; after the packet rotates one circle each time, the count in the packet is automatically increased one and then the packet is continuously transmitted; when the count in the packet reaches 0x3fff=16383 packets, the packets are taken by the PC to carry out CRC check operation to check characteristics of data transmission; and when the check operation is still correct after the data is circulated for 40 circles, a conclusion can be obtained that the simulation packet cannot cause data error due to accumulation transmission of errors after being transmitted by 8*40=320 station bodies. The method is simple and easy, has low cost and can rapidly check out the condition of the data transmission after masses of station bodies are in cascade connection with each other and guarantee the transmission quality of the data.
Description
Technical field
The present invention relates to a kind of stability be used to testing a large amount of acquisition stations data transmission after cascade, the data transmission performance testing method when belonging to multi-device concatenation.
Background technology
At present seismic prospecting instrument development and production are abroad monopolized substantially, and it is imperative to develop the domestic seismic prospecting instrument with independent intellectual property right.Seismic prospecting instrument uses in the open air in the on a large scale data collection task, and environment for use is abominable, so reliability, stability are particularly important.The data transmission capabilities of existing its design of seismic prospecting instrument is 6M, 8M, 16M etc., the different methods that realize of the technology that different company uses also there are differences, this has just drawn the method problem of test data transmittability, for different data transmission scheme methods, the deviser also assesses the validity of design in the suitable test approach of searching.
We are 24M according to design proposal design data channel capacity in the development process of seismic prospecting instrument.Whether the data channel transmittability of how to test design reaches designing requirement, tests simultaneously reliability, the stability of data transmission, is the realistic problem that we face.
In the open air in the construction, seismic prospecting instrument need to be laid very many collection points, data are collected with different acquisition stations again in these collection points, these acquisition stations are coupled together by open-air seismic cable again, and the data one-level one-level that collects is passed back the instrument host record analysis.Data may owing to the accumulation of clock jitter, the accumulation of signal attenuation and the multiple situations such as accumulation of software protocol transmission delay, cause the decline of transmission performance after receiving and transmit through multistage acquisition station.So after a kind of new host-host protocol designed, before not doing large-scale production, how checking the stability of agreement after the body cascade of a large amount of stations was a very important Consideration.
Summary of the invention
The objective of the invention is to realize with minority station body winding the data transmission performance testing method of the multi-device concatenation of Multiple Batch Station body cascade test.
For the situation after the test data transmission cascade, use open-air seismic cable twisted-pair feeder annular to connect into a winding 8 acquisition stations, after linking to each other, the head and the tail transmitting-receiving is connected by serial ports of computers with the pc machine, given an order as host computer by the pc machine, the simulated data bag sends afterwards circulating transfer in the body winding of station by a station body that connects pc, whenever the rear packet inside counting of turning around adds one automatically, then continue transmission, when reaching altogether, the packet inside counting does the CRC check operation by the PC taking-up behind 0x3fff=16383 bag, characteristic with the check data transmission, when data reader check behind circulation 40 circles is still correct, just can reach a conclusion: simulated data wraps in the mistake that can not cause because of the accumulation transmission of error data after the transmission through 8*40=320 the body of standing.
The method is simple, efficient is high, cost is low, the situation that can quick test goes out data transmission after the body cascade of a large amount of stations, and then check out a kind of stability of new host-host protocol, so that in better avoiding constructing in the open air because of acquisition station cascade number too much after because the situation that the accumulation of signal attenuation and software protocol transmission delay etc. cause transmission performance to descend guarantees the transmission quality of field data collection with optimum, the most stable host-host protocol.
Description of drawings
Fig. 1 station body loopback test method synoptic diagram
Fig. 2 serial ports of computers connects acquisition station figure synoptic diagram
The large line seismic cable of Fig. 3 connects acquisition station setup test synoptic diagram.
Fig. 4 test flow chart
Embodiment
A) use the large line cable of earthquake to connect 8 acquisition station bodies to illustrate 1
B) with Serial Port Line the power station debug serial port is connected on the computing machine.
C) DC power output voltage is transferred to 12V, to power station 12V confession electricity.
D) open on computers the serial ports program, baud rate is adjusted to 115200, data bit 8, position of rest 1, the no parity check position is without current control.
E) in the serial ports program, key in to order successively:
F) s w 4 85 power station FPGA mode of operation is set
G) fe 06 (hex pattern) power station A end powers on
H) u u send out wake-up packet to subordinate's acquisition station
I 0 packet that data length is 0xff of) d w ff
J) d r 0 receive a bag (unobstructed for guaranteeing link)
K) d t 32 3fff carry out the data loopback test, every bag winding 0x32=50 circle,
Test 0x3fff time
In the test process, power station is sent out a packet at every turn, through 5 transmission, get back to power station, power station sends out the packet of receiving, internal counter adds 1, when Counter Value reached 50, the bag that power station will be received compared the wrong test process that namely stops with the bag that sends for the first time, if power station after sending packet in a period of time without receiving bag, the also overtime test process that withdraws from.
Finish until test, amount to 0x3fff=16383 bag, every bag 50 circles (250 transmission),, leakage wrong without packet in the process.
Claims (1)
1. the data transmission performance testing method of a multi-device concatenation, it is characterized in that: use open-air seismic cable twisted-pair feeder annular to connect into a winding 8 acquisition stations, after linking to each other, the head and the tail transmitting-receiving is connected by serial ports of computers with the pc machine, given an order as host computer by the pc machine, packet sends afterwards circulating transfer in the body winding of station by a station body that connects pc, whenever the rear packet inside counting of turning around adds one automatically, then continue transmission, when reaching altogether, the packet inside counting does the CRC check operation by the pc taking-up behind 0x3fff=16383 bag, characteristic with the check data transmission, when data reader check behind circulation 40 circles is still correct, just can reach a conclusion: simulated data wraps in the mistake that can not cause because of the accumulation transmission of error data after the transmission through 8*40=320 the body of standing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910080329 CN101840007B (en) | 2009-03-18 | 2009-03-18 | Multi-device concatenation data transmission performance testing method |
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| CN 200910080329 CN101840007B (en) | 2009-03-18 | 2009-03-18 | Multi-device concatenation data transmission performance testing method |
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| CN101840007A CN101840007A (en) | 2010-09-22 |
| CN101840007B true CN101840007B (en) | 2013-02-20 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329546A1 (en) * | 1988-02-19 | 1989-08-23 | Institut Français du Pétrole | Semi-sequential transmission method and system using a plurality of radio transmission frequencies simultaneously for linking a seismic reception arrangement to a central processing unit |
| EP0501857A1 (en) * | 1991-02-22 | 1992-09-02 | Institut Francais Du Petrole | Method and apparatus for seismic transmission at very low error rate |
| US5206835A (en) * | 1989-11-03 | 1993-04-27 | Institut Francais Du Petrole | Modular device for reception, the acquisition and the transmission of seismic data with several multiplexing levels |
| CN1119279A (en) * | 1994-05-26 | 1996-03-27 | 法国石油研究所 | Seismic acquisition and transmission system with functions decentralization |
| US5706250A (en) * | 1992-10-12 | 1998-01-06 | Institut Francais Du Petrole | Seismic transmission method and system utilizing concentration units |
| CN1639585A (en) * | 2002-02-25 | 2005-07-13 | 维斯特恩格科地震控股有限公司 | Method of noise removal for cascaded sweep data |
| CN1871528A (en) * | 2003-09-17 | 2006-11-29 | 输入输出公司 | Single station wireless seismic data acquisition method and apparatus |
| CN2898853Y (en) * | 2006-05-11 | 2007-05-09 | 北京华昌新业物探技术服务有限公司 | Earthquake exploration data collecting system |
-
2009
- 2009-03-18 CN CN 200910080329 patent/CN101840007B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329546A1 (en) * | 1988-02-19 | 1989-08-23 | Institut Français du Pétrole | Semi-sequential transmission method and system using a plurality of radio transmission frequencies simultaneously for linking a seismic reception arrangement to a central processing unit |
| US5206835A (en) * | 1989-11-03 | 1993-04-27 | Institut Francais Du Petrole | Modular device for reception, the acquisition and the transmission of seismic data with several multiplexing levels |
| EP0501857A1 (en) * | 1991-02-22 | 1992-09-02 | Institut Francais Du Petrole | Method and apparatus for seismic transmission at very low error rate |
| US5706250A (en) * | 1992-10-12 | 1998-01-06 | Institut Francais Du Petrole | Seismic transmission method and system utilizing concentration units |
| CN1119279A (en) * | 1994-05-26 | 1996-03-27 | 法国石油研究所 | Seismic acquisition and transmission system with functions decentralization |
| CN1639585A (en) * | 2002-02-25 | 2005-07-13 | 维斯特恩格科地震控股有限公司 | Method of noise removal for cascaded sweep data |
| CN1871528A (en) * | 2003-09-17 | 2006-11-29 | 输入输出公司 | Single station wireless seismic data acquisition method and apparatus |
| CN2898853Y (en) * | 2006-05-11 | 2007-05-09 | 北京华昌新业物探技术服务有限公司 | Earthquake exploration data collecting system |
Non-Patent Citations (2)
| Title |
|---|
| 程世伦.远程电网智能监控系统.《中国优秀硕士学位论文全文数据库 工程科技II辑》.2005,全文. |
| 远程电网智能监控系统;程世伦;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20050315;全文 * |
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| CN101840007A (en) | 2010-09-22 |
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