CN105761474B - A kind of towed linear-array sonar system signal loop transfer method based on Ethernet - Google Patents
A kind of towed linear-array sonar system signal loop transfer method based on Ethernet Download PDFInfo
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- CN105761474B CN105761474B CN201610317007.5A CN201610317007A CN105761474B CN 105761474 B CN105761474 B CN 105761474B CN 201610317007 A CN201610317007 A CN 201610317007A CN 105761474 B CN105761474 B CN 105761474B
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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Abstract
The towed linear-array sonar system signal loop transfer method based on Ethernet that the invention discloses a kind of, the towed linear-array sonar system includes several nodes and a bridge module, the reciprocal bi-directional ring of data transfer direction is formed by Ethernet between each node and bridge module, the sampled data bag of each node, while bridge module is transmitted to by both direction.When there is following either case, bridge module notifies node to modify sampled data bag sending direction: a, towed linear-array sonar system initialization to node transmission link setting command；B, bridge module receives the sampled data bag labeled as offline node；C, bridge module parses the sampled data bag received, and sampled data bag is lost.Hoop path transmission method provided by the invention realizes that simply data transmission is stable reliable in real time, and when towing line array link breaks down, system can continue steady operation, improve the stability and reliability of system.
Description
Technical field
The present invention relates to towed linear-array sonar technical fields, and in particular to a kind of towing line array sound based on Ethernet
Receive system signal loop transfer method.
Background technique
Towed linear-array sonar is also referred to as " towed array sonar ", it is that hydrophone is embedded on cable to form linear array, by
Trailing cable drags the sonar that target acquisition in water is carried out after naval vessels tail, is mainly used for listening and surveys submarine radiated noise, carries out long-range
Monitoring, direction finding and identification, some can also be used for ranging.
Towing line array generally by lead-in cable, instrument section, basic matrix section, after lead section and tail end is constituted, the tens of rice of array length to number
Hundred meters, working depth is variable, and the sensor in towing line array has hydrophone module and non-sound module, and non-sound module is to monitor
Formation and posture, towed linear-array sonar basic matrix size is big, and working frequency is low, is conducive to line-spectrum detection, can snugly send out at a distance
Existing target.
Up to thousands of rice, transmission range is long for trailing cable and linear array overall length, and working environment is complicated, current most of transmission
Technology has deficiency in stability and real-time, and link failure once occurs, and system will be difficult to continue to work normally,
Therefore, the transmission of research towed linear-array sonar system loop and link failure recovery method have important engineering practical value.
Summary of the invention
The present invention provides a kind of the towed linear-array sonar system signal loop transfer method based on Ethernet, this method
Data transmission is stablized, it is easy to accomplish, it can effectively restore link failure, improve the reliability of transmission.
A kind of towed linear-array sonar system signal loop transfer method based on Ethernet, the towed linear-array sonar
System includes several nodes and a bridge module, forms transmission side data by Ethernet between each node and bridge module
To reciprocal bi-directional ring, the sampled data bag of each node, while bridge module is transmitted to by both direction.
In the present invention, passing through both direction is transmitted to bridge module simultaneously for the sampled data bag of each node, when wherein one
When the transmission in a direction is broken down, the transmission of sampled data bag can be completed by another direction, improves towing line array
The stability and reliability of sonar system.
Preferably, bridge module notifies node to node transmission link setting command when there is following either case
Modify sampled data bag sending direction:
A, towed linear-array sonar system initialization；
B, bridge module receives the sampled data bag labeled as offline node；
C, bridge module parses the sampled data bag received, and sampled data bag is lost.
In the present invention, carried out data transmission using ethernet link, has achieved the purpose that stabilization, high-speed transfer, and pass through
The interaction of link command, when guaranteeing that towing line array link breaks down, system still can be with steady operation, and has from failure
The ability of middle recovery.
Preferably, bridge module notifies node to modify sampled data bag sender to node transmission link setting command
To concrete operations are as follows:
For bridge module from both direction simultaneously to all node transmission link sense commands, each node receives link detecting
After order, responded to the direction transmission link sense command for receiving link detecting order；
If the order that within a predetermined period of time, bridge module does not receive some direction of some node is responded, then bridge
Module is cut off the loop of the direction, is carried out data transmission by other direction loop to the node transmission link setting command；
If the link detecting order that within a predetermined period of time, bridge module does not receive some node both direction is responded,
Then the vertex ticks is offline to the node transmission link setting command by bridge module.
Preferably, each node is successively arranged, each node includes first port and second port, two neighboring node
First port and second port two-way link formed by Ethernet.
Preferably, bridge module includes the first network interface and the second network interface, the first network interface and adjacent node of bridge module
First port two-way link is formed by Ethernet, the second port of the second network interface of bridge module and adjacent node by with
Too net forms two-way link.
The first port and second port of each node can receive link detecting order, if first port receives link is examined
Order is surveyed, then is responded by first port transmission link sense command；If second port receives link sense command, by second end
Mouth transmission link sense command is responded.
Link detecting order includes node serial number and port-mark (i.e. first port and second port) in responding, and bridges mould
It is online by corresponding port label after block receives link detecting order response.
If link breaks down, for example, the link detecting order that bridge module does not receive the first port of third node is returned
It answers, is then labeled as the first port of third node offline, and notify all sampled data bags of third node by second port
It sends；The link detecting order that bridge module does not receive the second port of third node is responded, then by the second end of third node
Mouth is labeled as offline, and all sampled data bags of third node is notified to be sent by first port；If bridge module does not receive
The link detecting order of the first port and second port of three nodes is responded, then is offline by third vertex ticks.
Preferably, each node numbers in order, sampled data bag includes data packet head and sampled data, data packet head packet
Containing node serial number and data packet count value, the circulation that data packet count value is 1 to 126 and stepping is 1 is incremented by number.
Every group of complete sampled data bag, data packet count value increase by 1, for sampled data package packet next time.
Preferably, each node includes dsp processor and Ethernet switching chip (i.e. Ethernet switch chip),
Dsp processor will be for that will acquire data group for sampled data bag, maintenance data packet count value and according to the choosing of data packet count value
The sending direction of sampled data bag is selected, Ethernet switching chip is used to carry out sampled data according to the sending direction of sampled data bag
Packet forwarding.
Ethernet switching chip carries out sampled data bag forwarding according to the sending direction of sampled data bag, guarantees to adopt in loop
Sample data packet stream to consistency and correctness.
Preferably, the odd and even number of data packet count value respectively corresponds different sampled data bag sending directions.
For example, when data packet count value is odd number, DSP is by sampled data bag by first end for a certain node
Mouth issues, and carries out clockwise transmission along loop；When data packet count value is even number, DSP is sent out sampled data bag by second port
Out, counterclockwise transmission is carried out along loop.
Compared with the existing technology, the present invention has following advantageous effects:
(1) carried out data transmission using 100 m ethernet link, data transmission has the characteristics that stable, reliable, real-time；
(2) when ethernet link breaks down, towed linear-array sonar system still can be with steady operation, and has from event
The ability restored in barrier；
(3) stabilization that simply can guarantee data, real-time, reliable transmission are realized, towed linear-array sonar is effectively improved
The stability and reliability of system.
Detailed description of the invention
Fig. 1 is that the present invention is based on the node module structure charts of the towed linear-array sonar system of Ethernet；
Fig. 2 is that the present invention is based on the schematic diagrames that the towed linear-array sonar system loop signal of Ethernet transmits；
Fig. 3 is that the present invention is based on the flow charts that the towed linear-array sonar system interior joint loop data of Ethernet is sent；
Fig. 4 is recovery process when breaking down the present invention is based on link in the towed linear-array sonar system of Ethernet
Figure.
Specific embodiment
With reference to the accompanying drawing, the towed linear-array sonar system signal loop transfer method the present invention is based on Ethernet is done
Detailed description.
Towed linear-array sonar system the present invention is based on Ethernet includes several nodes and a bridge module, is such as schemed
Shown in 1, each node includes dsp processor, Ethernet switching chip, first port and second port, and dsp processor is used for will
Acquisition data group is sampled data bag, maintenance data packet count value and selects sampled data bag according to data packet count value
Direction is issued, Ethernet switching chip is used to carry out sampled data bag forwarding according to the sending direction of sampled data bag.
As shown in Fig. 2, each node is successively arranged, pass through hundred between the first port and second port of two neighboring node
Mbit ethernet formed two-way link, bridge module include the first network interface and the second network interface, the first network interface of bridge module with it is adjacent
The first port of node forms two-way link, the second network interface of bridge module and the second end of adjacent node by 100 m ethernet
Mouth forms two-way link by 100 m ethernet and forms data by 100 m ethernet between bridge module and node on the whole
The sampled data bag of the reciprocal bi-directional ring of transmission direction, each node can be transmitted to bridge joint mould by both direction simultaneously
Block, each node in loop number consecutively in order, for example, be directed to node 3, the sampled data bag of node 3 is on the one hand to the left
Transmission is transmitted to bridge module by node 1, on the other hand transmits to the right, passes sequentially through node 2 to node N and is transmitted to bridge joint
Module.
The transmission process of sampled data is as shown in Figure 3, comprising:
Step a, the dsp processor in node in order adopt node serial number, data packet count value and sampled data filling
Completion group packet in sample data packet, data packet count value safeguarded by dsp processor, is 1 to 126 and circulation that stepping is 1 is incremented by number.
Step b, dsp processor judge data packet count value for odd number or even number, by data packet count after having judged
Value increases 1, for using when next data packet group packet；
Step c sends sampled data bag from first port, warp if data packet count value is judged as odd number in step b
Ethernet two-way link is crossed, sampled data bag is sent to the first network interface of bridge module by clockwise direction as shown in Figure 2；If step
Data packet count value is judged as even number in rapid b, then sends sampled data bag from node second port, by Ethernet Two-way Chain
Sampled data bag is sent to the second network interface of bridge module by road, counter clockwise direction as shown in Figure 2.
When towed linear-array sonar system initialization or failure, using method as shown in Figure 4, link is carried out
It resets, specifically includes:
Step 1, bridge module passes through the first network interface and the second network interface to each node transmission link sense command simultaneously,
In via the first network interface issue link detecting order successively transmitted in a counterclockwise direction along Fig. 2 intermediate ring road；Each node receives chain
After the sense command of road, the first port by receiving link detecting order is responded to bridge module transmission link sense command, chain
Road sense command includes node serial number and port-mark (being herein first port) in responding, and link detecting order is responded along Fig. 2
Intermediate ring road is successively transmitted to the first network interface of bridge module in a clockwise direction；
It is successively transmitted in a clockwise direction via the link detecting order that the second network interface issues along Fig. 2 intermediate ring road；Each node
After receiving link detecting order, the second port by receiving link detecting order is returned to bridge module transmission link sense command
It answers, includes node serial number and port-mark (being herein second port) in link detecting order response, link detecting order is responded
Successively it is transmitted to the second network interface of bridge module in a counterclockwise direction along Fig. 2 intermediate ring road.
Step 2, the link detecting order that bridge module receives each node is responded, and 500ms is waited, when the waiting of 500ms
Between setting from experiment, to ensure that all link detecting orders response can be correctly received.
Step 3, bridge module judges whether that the link detecting order for having received all node all of the port is responded,
If link is when no fault occurs, the response of all two ports of node should be able to be received, if having received order response,
Then by the corresponding port of respective nodes labeled as online；
If link there are failure cause bridge module do not receive some port order response, by the port label be from
Line, and to node transmission link setting command corresponding to the port, notify the node that all data packets are changed to from another
Port is sent, to guarantee that towed linear-array sonar system can continue steady operation；
It is offline by the vertex ticks if two ports of some node are not online.
Step 4, bridge module parses the sampled data bag received, parse sampled data bag in node serial number and
Data packet count value；
Step 5, judge whether to have received the sampled data bag that offline node is marked as from some, if receiving, weight
Multiple step 1~step 4, re-flags and link state is arranged；
Step 6, judge whether link sends failure according to data packet count value and node serial number, when link is normal, bridge joint
Module can receive all sampled data bags of all nodes；
If some node data packet count value is the packet loss of odd number, event may occur for link where the node first port
Barrier；If some node data packet count value is the packet loss of even number, link where the node second port may break down；
If all sampled data bags of some node are all lost, link where the node first port and second port may all be had occurred
Failure repeats step 1~step 4, re-flags and link state is arranged.
Claims (2)
1. a kind of towed linear-array sonar system signal loop transfer method based on Ethernet, which is characterized in that the towing
Towed array sonar system includes several nodes and a bridge module, is formed between each node and bridge module by Ethernet
The reciprocal bi-directional ring of data transfer direction, the sampled data bag of each node, while bridge joint mould is transmitted to by both direction
Block；
Each node is successively arranged, and each node includes first port and second port, the first port of two neighboring node and
Second port forms two-way link by Ethernet；
Bridge module includes the first network interface and the second network interface, and the first network interface of bridge module and the first port of adjacent node pass through
Ethernet forms two-way link, and the second network interface of bridge module and the second port of adjacent node form Two-way Chain by Ethernet
Road；
Number consecutively, sampled data bag include data packet head and sampled data to each node in order, and data packet head is compiled comprising node
Number and data packet count value, data packet count value is 1 to 126 and stepping is 1 circulation be incremented by number；
Each node includes dsp processor and Ethernet switching chip, and dsp processor is sampled data for that will acquire data group
Packet, maintenance data packet count value and the sending direction according to data packet count value selection sampled data bag, Ethernet exchanging core
Piece is used to carry out sampled data bag forwarding according to the sending direction of sampled data bag；
The odd and even number of data packet count value respectively corresponds different sampled data bag sending directions；
Include: using the transmission process of data
Node serial number, data packet count value and sampled data are inserted hits in order by step a, the dsp processor in node
According to completion group packet in packet, data packet count value is safeguarded by dsp processor, is 1 to 126 and circulation that stepping is 1 is incremented by number；
Step b, dsp processor judge data packet count value for odd number or even number, increase data packet count value after having judged
1, for being used when next data packet group packet；
Step c, if data packet count value is judged as odd number in step b, by sampled data bag from first port send, by with
Sampled data bag is sent to the first network interface of bridge module by too net two-way link in the direction of the clock；If data packet meter in step b
Numerical value is judged as even number, then sends sampled data bag from node second port, by Ethernet two-way link, by side counterclockwise
To the second network interface that sampled data bag is sent to bridge module；
When towed linear-array sonar system initialization or failure, resetting for link is carried out, is specifically included:
Step 1, bridge module passes through the first network interface and the second network interface to each node transmission link sense command, wherein passing through simultaneously
It is successively transmitted in a counterclockwise direction by the link detecting order that the first network interface issues along bi-directional ring；Each node receives link detecting
After order, the first port by receiving link detecting order is responded to bridge module transmission link sense command, link detecting
Order includes node serial number and port-mark in responding, and link detecting order response successively passes in a clockwise direction along bi-directional ring
Transport to the first network interface of bridge module；
It is successively transmitted in a clockwise direction via the link detecting order that the second network interface issues along bi-directional ring；Each node receives chain
After the sense command of road, the second port by receiving link detecting order is responded to bridge module transmission link sense command, chain
Road sense command includes node serial number and port-mark in responding, and link detecting order is responded along bi-directional ring in a counterclockwise direction
Successively it is transmitted to the second network interface of bridge module；
Step 2, the link detecting order that bridge module receives each node is responded, and is waited for a period of time, to ensure all links
Sense command response can be correctly received；
Step 3, bridge module judges whether that the link detecting order for having received all node all of the port is responded,
If link is when no fault occurs, the response of all two ports of node should be able to be received, will if having received order response
The corresponding port of respective nodes is labeled as online；
If link there are failure cause bridge module do not receive some port order response, be by the port label it is offline,
And to node transmission link setting command corresponding to the port, notify the node that all data packets are changed to from another port
It sends, to guarantee that towed linear-array sonar system can continue steady operation；
It is offline by the vertex ticks if two ports of some node are not online；
Step 4, bridge module parses the sampled data bag received, parses node serial number and data in sampled data bag
Packet count value；
Step 5, judge whether to have received the sampled data bag for being marked as offline node from some, if receiving, repeat to walk
Rapid 1~step 4 re-flags and link state is arranged；
Step 6, judge whether link sends failure, when link is normal, bridge module according to data packet count value and node serial number
All sampled data bags of all nodes can be received；
If some node data packet count value is the packet loss of odd number, link where the node first port may break down；
If some node data packet count value is the packet loss of even number, link where the node second port may break down；If
All sampled data bags of some node are all lost, then event may all has occurred in the node first port and second port place link
Barrier repeats step 1~step 4, re-flags and link state is arranged.
2. the towed linear-array sonar system signal loop transfer method based on Ethernet as described in claim 1, feature
It is, when there is following either case, bridge module notifies node to modify sampled data to node transmission link setting command
Packet sending direction:
A, towed linear-array sonar system initialization；
B, bridge module receives the sampled data bag labeled as offline node；
C, bridge module parses the sampled data bag received, and sampled data bag is lost.
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| DE102017208823A1 (en) * | 2017-05-24 | 2018-11-29 | Wago Verwaltungsgesellschaft Mbh | Initialization of a local bus |
| CN109361559B (en) * | 2017-08-10 | 2023-01-06 | 北京东土科技股份有限公司 | Method and device for detecting parallel redundant network fault |
| CN107911274A (en) * | 2017-12-29 | 2018-04-13 | 苏州联视泰电子信息技术有限公司 | A kind of loop self-organizing method based on Ethernet switching chip |
| CN111106990B (en) * | 2019-12-30 | 2021-09-14 | 苏州联视泰电子信息技术有限公司 | Self-diagnosis method for loop of underwater multi-channel signal acquisition and transmission array system |
| CN114114423B (en) * | 2022-01-28 | 2022-04-19 | 中海油田服务股份有限公司 | Marine seismic streamer equipment and method capable of providing tension and water stack information |
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