CN110831045B - Information bidirectional transmission method of marine riser remote control monitoring system - Google Patents
Information bidirectional transmission method of marine riser remote control monitoring system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/04—Arrangements for maintaining operational condition
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
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- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
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Abstract
The invention discloses a bidirectional information transmission method for a remote control monitoring system of a marine riser, which relates to the technical field of marine riser fatigue monitoring and comprises the following steps: the data receiving control node handshakes with the first data acquisition transmitting node and sends a first control instruction to the first data transmitting node after the handshake is finished; the first data acquisition and transmission node sends first data to the data receiving and control node after receiving the first control instruction; when the first data is smaller than a first set threshold value, the data receiving control node handshakes with the second data acquisition transmitting node; the data receiving control node sends a second control instruction to the second data acquisition and transmission node after the handshake is finished; and after the second data acquisition and transmission node receives the second control instruction, the second data acquisition and transmission node sends second data to the data receiving and control node. The embodiment of the invention completely avoids collision and collision possibly occurring when different data acquisition and transmission nodes send data, and improves the utilization rate and transmission efficiency of the marine riser fatigue monitoring network.
Description
Technical Field
The invention relates to the technical field of remote control monitoring of a marine riser, in particular to a bidirectional information transmission method of a remote control monitoring system of a marine riser.
Background
The riser fatigue monitoring network is an underwater acoustic network with a linear topological structure, wherein the underwater acoustic network is composed of a target node below the water surface and a plurality of source nodes distributed along a riser. With the deep water and ultra-deep water areas of the offshore oil army, the marine riser fatigue monitoring network changes from a network with sparse nodes into a large-scale high-density underwater acoustic network with wide coverage and dense nodes.
Due to the characteristics of large time delay, high attenuation, narrow bandwidth and limited node energy of the underwater acoustic channel, if the large-scale dense marine riser fatigue monitoring network adopts a TDMA (time division multiple access) method, the time delay, the power consumption and the like of the underwater acoustic monitoring network are increased rapidly, collision and collision can occur when different nodes send data, and data loss is caused.
Disclosure of Invention
The embodiment of the invention provides an information bidirectional transmission method of a marine riser remote control monitoring system, which avoids collision and collision possibly occurring when different data receiving and transmitting nodes send data.
The embodiment of the invention provides a method for bidirectionally transmitting information of a remote control monitoring system of a marine riser, wherein the remote control monitoring system of the marine riser at least comprises a data acquisition and transmission node and a data receiving and controlling node, the data acquisition and transmission node at least comprises a first data acquisition and transmission node and a second data acquisition and transmission node, and the transmission method comprises the following steps:
step 1, a data receiving control node handshakes with a first data acquisition transmitting node, and sends a first control instruction to the first data transmitting node after the handshake is finished;
step 2, the first data acquisition transmitting node sends first data to the data receiving control node after receiving the first control instruction;
step 3, the data receiving control node compares the first data with a first set threshold, and when the first data is smaller than the first set threshold, the data receiving control node handshakes with the second data acquisition transmitting node;
step 4, the data receiving control node sends a second control instruction to the second data acquisition transmitting node after the handshake is finished;
and 5, after the second data acquisition and transmission node receives the second control instruction, the second data acquisition and transmission node sends second data to the data receiving and control node.
According to the embodiment of the invention, the data receiving control node controls the time for the first data collecting and transmitting node and the second data node to send data, and when the first data is smaller than the first set threshold value, the data receiving control node controls the second data collecting and transmitting node to send the second data. That is to say, the data acquisition transmitting node that is located under water is controlled by the data reception control node that is located on water completely, and only when current data acquisition transmitting node data transmission task was accomplished, new data acquisition transmitting node transmission data just can be controlled to data reception control node, has avoided the collision conflict that probably takes place when different data acquisition transmitting node sent data completely, has promoted the utilization ratio and the transmission efficiency of marine riser remote monitoring network.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a block diagram of a riser monitoring system according to an exemplary embodiment of the present invention;
fig. 2 is a flowchart of a method for bidirectional information transmission of a remote monitoring system for a riser according to an exemplary embodiment of the present invention;
fig. 3 is a schematic view of a general monitoring mode of a bidirectional information transmission method of a remote monitoring system for a riser according to an exemplary embodiment of the present invention;
fig. 4 is a schematic view of a corner early warning mode of a bidirectional information transmission method for a remote monitoring system for a riser according to an exemplary embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a transition between a corner early warning mode and a normal monitoring mode of a bidirectional information transmission method for a remote riser monitoring system according to an exemplary embodiment of the present invention;
fig. 6 is a schematic diagram illustrating conversion of a common monitoring mode, a typhoon warning mode and a stress warning mode of a bidirectional information transmission method of a remote control monitoring system for a riser according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The remote monitoring system for the marine riser at least comprises a data acquisition and transmission node and a data receiving and controlling node, wherein the data acquisition and transmission node at least comprises a first data acquisition and transmission node and a second data acquisition and transmission node, as shown in fig. 1. For example, the remote monitoring system for the marine riser includes a corner data acquisition and transmission node, a stress data acquisition and transmission node, or an ocean flow rate acquisition and transmission node, etc. located under water, and a data receiving and controlling node located above water, which is not specifically limited in this embodiment.
In an exemplary embodiment, an embodiment of the present invention provides a method for bidirectional information transmission of a remote monitoring system of a marine riser, as shown in fig. 2 and 3, the method includes:
step 1, namely S101, the data receiving control node handshakes with the first data acquisition transmitting node, and sends a first control instruction to the first data transmitting node after the handshake is completed;
specifically, the data receiving control node actively handshakes with the first data collecting and transmitting node at the time A1, and after the handshake is completed at the time A2, the data receiving control node starts a first control instruction to the first data collecting and transmitting node at the time A3, where the first control instruction is to request the first data collecting and transmitting node to send real-time first data collected by the first data collecting and transmitting node. Wherein A2 and A3 may be at the same time or different times. In this embodiment, the first data is riser angle data.
Step 2, namely S102, the first data acquisition and transmission node sends first data to the data reception and control node after receiving the first control instruction;
specifically, the first data acquisition and transmission node receives the first control instruction at time A4, sends the first data which is just acquired to the data reception and control node at time A5, and completes transmission at time A6. The time period between A6 and A5 is the transmission delay of the first data, that is, the time required for the first data acquisition and transmission node to transmit the first data from the reception of the first control instruction to the reception of the first data by the data reception control node. Wherein A4 and A5 may be at the same time or different times.
Step 3, that is, S103, the data receiving control node compares the first data with a set threshold, and when the first data is smaller than the first set threshold, the data receiving control node performs handshake with the second data acquisition transmitting node;
specifically, after the data receiving control node receives the first data at a time A6, the first data is compared with a first set threshold, and when the first data is smaller than the first set threshold, the data receiving control node changes the communication address, performs handshake with the second data acquisition and transmission node at a time A7, and completes handshake at a time A8. Where A6 and A7 may be approximately the same time or different times.
Step 4, namely S104, the data receiving control node sends a second control instruction to the second data acquisition and transmission node after the handshake is finished;
specifically, at time A9, the data receiving control node sends a second control instruction to the second data acquisition and transmission node, where the second control instruction is to request the second data acquisition and transmission node to send real-time second data acquired by the second data acquisition and transmission node, and in this embodiment, the second data is riser stress data. Wherein A8 and A9 may be the same time or different times.
Step 5, that is, S105, after the second data collection and transmission node receives the second control instruction, the second data collection and transmission node sends the second data to the data reception and control node.
Specifically, after the second data acquisition and transmission node receives the second control instruction at the time a10, the second data acquisition and transmission node sends the second data which is just acquired to the data reception control node at the time a 11. The second data acquisition transmitting node finishes sending at the A12 moment. The time period between a12-a11 is the transmission delay of the second data. Wherein a10 and a11 may be the same time or different times.
The information bidirectional transmission method of the remote control monitoring system of the marine riser can be called as a common monitoring mode. It should be noted that, after the data receiving control node receives the second data, the data receiving control node may request the nth data acquisition transmitting node, which is not the first data acquisition transmitting node or the second data acquisition transmitting node, to transmit the data, and this is not limited specifically herein. That is, the data acquisition transmitting node may be multiple, and whether the data acquisition transmitting node transmits data or not and the transmitting sequence are completely controlled by the data reception control node.
The embodiment specifically takes the first data acquisition and transmission node as the corner data acquisition and transmission node and the second data acquisition and transmission node as the stress data acquisition and transmission node as an example to specifically explain:
as shown in fig. 3, where each filled block represents the time consumed in performing the corresponding action. The data receiving control node and the corner data collecting and transmitting node handshake at the moment A1, after the handshake is completed at the moment A2, the data receiving control node sends a first control instruction to the corner data collecting and transmitting node at the moment A3, and the corner data collecting and transmitting node receives the first control instruction at the moment A4 and sends the corner data which is just collected, namely the first data. The corner data acquisition and transmission node sends corner data at the moment A5, the data receiving control node compares the corner data with a first set threshold after receiving the corner data at the moment A6, when the corner data is smaller than the first set threshold, the data receiving control node changes a communication address into a stress data acquisition and transmission node and performs handshake with the stress data acquisition and transmission node at the moment A7, after the handshake at the moment A8 is completed, the data receiving control node sends a second control instruction to the stress data acquisition and transmission node at the moment A9, and after the stress data acquisition and transmission node receives the second control instruction at the moment A10, the stress data acquisition and transmission node sends the stress data which is just acquired to the data receiving control node at the moment A11 and completes transmission at the moment A12. The time periods A1 and A2 represent the time required for handshaking between the data receiving control node and the corner data acquisition transmitting node, namely the first filling block from the left in FIG. 3; the time periods A3 and A4 represent the time required for the data receiving control node to send the first control instruction and the first data collecting and transmitting node to receive the first control instruction, i.e. the second filling block from the left in fig. 3; the time period A5-A6 represents the time required for the first data acquisition and transmission node to finish sending the first data, which is also called the transmission delay of the first data, i.e. the third padding block from the left in fig. 3; the time period from A7 to A8 represents the time required for handshaking between the data receiving control node and the second data acquisition transmitting node, namely the fourth filling block from the left in FIG. 3; the time period A9-a10 represents the time required for the data receiving control node to send the second control instruction and for the second data acquisition and transmission node to receive the second control instruction, i.e., the fifth filling block from the left in fig. 3; the time periods a11 to a12 represent the time required for the first data acquisition transmitting node to finish sending the second data, which is also called the transmission delay of the second data, i.e. the sixth padding block from the left in fig. 3.
According to the embodiment of the invention, the data receiving control node controls the time for the first data collecting and transmitting node and the second data node to send data, and when the first data is smaller than a first set threshold value, the data receiving control node can control the second data collecting and transmitting node to send the second data. That is to say, the data acquisition transmitting node that is located under water is controlled by the data reception control node that is located on water completely, and only when current data acquisition transmitting node data transmission task was accomplished, new data acquisition transmitting node transmission data just can be controlled to data reception control node, has avoided the collision conflict that probably takes place when different data acquisition transmitting node sent data completely, has promoted the utilization ratio and the transmission efficiency of marine riser remote monitoring network.
The rotation angle of the upper flexible joint and the lower flexible joint of the marine riser is directly related to the safety of drilling operation, and meanwhile, the parameter is closely related to the mud density, the environmental load and the like in the process of the drilling operation, is a variable parameter and needs to be adjusted in real time in the drilling process. When the numerical value of the corner of the marine riser changes greatly, the marine riser is possibly in a dangerous state, and the marine riser is monitored in real time at the moment.
In an exemplary embodiment, when the first data is greater than or equal to a first set threshold, the transmission method further includes: the data receiving control node starts a first early warning mode and sends a first early warning control instruction to the first data collecting and transmitting node, and the first data collecting and transmitting node receives the first early warning control instruction and sends real-time first data to the data receiving control node within a specified time.
Specifically, when first data received by the data receiving control node is larger than or equal to a first set threshold value, the marine riser is in a dangerous state, at the moment, the data receiving control node starts a first early warning mode and sends a first early warning control instruction to the first data collecting and transmitting node, the first data collecting and transmitting node receives the first early warning control instruction and sends real-time first data to the data receiving control node within a specified time, and at the moment, the first data collecting and transmitting node and the data receiving control node are always in a connected state. The adjustment device on the water adjusts the marine riser until the first data is restored to be less than a first set threshold. The designated time is controlled by the data receiving control node, and may be a time period from the first early warning mode being started until the first data is recovered to be less than a first set threshold, or a time period being greater than the time period from the first early warning mode being started until the first data is recovered to be less than the first set threshold, which is not specifically limited herein. In the first early warning mode, the first data acquisition and transmission node continuously transmits first data to the data receiving and control node by taking the time not less than the transmission delay of the first data as a period. In other words, the first data collecting and transmitting node may continuously transmit the real-time first data to the data receiving and controlling node, that is, repeatedly transmit the real-time first data with the transmission delay of the first data as a cycle, or may intermittently transmit the real-time first data to the data receiving and controlling node, where the intermittent time is controlled by the data receiving and controlling node. Fig. 4 is a diagram illustrating a working mode of the data receiving control node and the corner data acquisition and transmission node when the first data acquisition and transmission node is the corner data acquisition and transmission node and the data receiving control node starts a corner early warning mode. As shown in fig. 4, in the corner early warning mode, the corner data acquisition and transmission node continuously transmits the corner data to the data reception control node, that is, starting from the 5 th filling block from the left in fig. 4, and the corner data acquisition and transmission node starts the second corner data immediately after transmitting the first corner data. It should be noted that each of the padding blocks represents the time required to perform the corresponding action.
And when the first data is smaller than the first set threshold value, the data receiving control node finishes the first early warning mode, and the data receiving control node resumes the steps 1 to 5, namely resumes the ordinary monitoring mode. Specifically, fig. 5 shows a schematic diagram of conversion between a corner early warning mode and a normal monitoring mode of a data receiving control node when a first data acquisition and transmission node is a corner data acquisition and transmission node and a second data acquisition and transmission node is a stress data acquisition and transmission node. As shown in fig. 5, after the 9 th filling block starts from the left, the data receiving control node enters a corner early warning mode, the corner data acquisition transmitting node continuously transmits the corner data, and when the corner data is smaller than a first set threshold, the corner early warning mode is ended, that is, the 7 th filling block ends the corner early warning mode from the right, and the data receiving control node starts to enter a normal monitoring mode. It should be noted that each of the padding blocks represents the time required to perform the corresponding action.
The alternating stress of the riser is directly related to whether the riser can work safely, and the stress of a bottom hinged area of the riser is complex and is a key position for strain measurement. When a typhoon comes, the riser sometimes needs to be lifted up to be dragged by a ship in the sea, and the monitoring of the stress of the riser is very important at the moment.
In an exemplary embodiment, the data receiving control node may further receive weather data, and when the weather data reaches the alarm line, the data receiving control node starts the second early warning mode and sends a sleep instruction to the data collecting and transmitting nodes other than the second data collecting and transmitting node.
Specifically, the weather data is mainly wind data, the weather data can be collected through a weather monitoring system of the offshore platform, and the data of the weather monitoring system can be sent to the data receiving control node. The meteorological monitoring system may exist independently, and is electrically connected to the remote riser monitoring system, or may belong to a part of the remote riser monitoring system, which is not limited herein. And when the weather data reaches an alarm line, the data receiving control node starts a second early warning mode. In this embodiment, the second warning mode may be a typhoon warning mode. And in the second early warning mode, the data receiving control node sends a dormancy instruction to the data acquisition transmitting node except the second data acquisition transmitting node, namely the data receiving control node can keep handshaking with the second data acquisition transmitting node. Optionally, when the data receiving control node starts the second early warning mode, the data receiving control node turns off the function of the first early warning mode. And when the weather data is lower than the alarm line, the data receiving control node finishes the second early warning mode, and then the data receiving control node resumes the steps 1 to 5.
Further, when the second data is larger than a second set threshold, the data receiving control node enters a third early warning mode and sends a second early warning instruction to the second data acquisition and transmission node, and the second data acquisition and transmission node sends the second data to the data receiving control node within a specified time after receiving the second early warning instruction.
Specifically, the designated time is controlled by the data receiving control node, and may be a time period from the third early warning mode being started until the second data is recovered to be less than the second set threshold, or a time period being greater than the time period from the third early warning mode being started until the second data is recovered to be less than the second set threshold. And entering a third early warning mode, sending a second early warning instruction to the second data acquisition and transmission node by the data reception control node, and sending second data to the data reception control node within a specified time after the second early warning instruction is received by the second data acquisition and transmission node. And when the second data is smaller than a second set threshold or the second early warning mode is ended, the third early warning mode is ended, and the second data acquisition transmitting node stops sending data to the data receiving control node. When entering a third early warning mode, the adjustment device on the water can adjust the riser until the second data of the riser is smaller than a second set threshold value. In this embodiment, the third warning mode is a stress warning mode.
Fig. 6 shows that when the first data acquisition and transmission node is a corner data acquisition and transmission node and the second data acquisition and transmission node is a stress data acquisition and transmission node, the data reception control node converts the typhoon early warning mode, the stress early warning mode and the common monitoring mode into each other. Starting from the 6 th filling block at the left side of fig. 6, the data receiving control node enters a typhoon early warning mode, when the second data is larger than a second set threshold value, the data receiving control node enters a stress early warning mode, at the moment, the stress data acquisition and transmission node continuously transmits real-time stress data, and the data receiving control node enters a common monitoring mode until the second data is smaller than the second set threshold value or the typhoon early warning mode is finished, namely, the sixth filling block at the right side of fig. 6 starts to enter the common monitoring mode. It should be noted that each of the padding blocks represents the time required to perform the corresponding action.
The embodiment of the invention realizes the mutual switching between the typhoon stress early warning mode and the common monitoring mode of the marine riser, the data receiving control node sends a dormant control instruction to other data acquisition and transmitting nodes except the second data acquisition and transmitting node during typhoon, and when the second value of the marine riser exceeds a second set threshold value, the data receiving control node sends an instruction entering a third early warning mode to the data receiving control node, so that the second data of the marine riser is monitored in real time, and the safety of the operation of the marine riser is improved.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A bidirectional information transmission method for a remote control monitoring system of a marine riser comprises at least a data acquisition and transmission node and a data reception control node, wherein the data acquisition and transmission node at least comprises a first data acquisition and transmission node and a second data acquisition and transmission node, and the transmission method comprises the following steps:
step 1, the data receiving control node handshakes with a first data acquisition transmitting node and sends a first control instruction to the first data acquisition transmitting node after the handshake is finished;
step 2, the first data acquisition and transmission node sends first data to the data receiving and control node after receiving the first control instruction;
step 3, the data receiving control node compares the first data with a first set threshold value, and when the first data is smaller than the first set threshold value, the data receiving control node handshakes with a second data acquisition transmitting node;
step 4, the data receiving control node sends a second control instruction to a second data acquisition transmitting node after the handshake is completed;
step 5, after the second data acquisition and transmission node receives the second control instruction, the second data acquisition and transmission node sends second data to a data receiving and control node;
when the first data is greater than or equal to a first set threshold, the transmission method further includes:
the data receiving control node starts a first early warning mode and sends a first early warning control instruction to a first data acquisition and transmission node, and the first data acquisition and transmission node receives the first early warning control instruction and then sends real-time first data to the data receiving control node within a specified time;
when the first data is smaller than a first set threshold value, the data receiving control node finishes the first early warning mode, and the data receiving control node resumes the steps 1 to 5;
the data receiving control node receives weather data, when the weather data reach an alarm line, the data receiving control node starts a second early warning mode, sends a sleep instruction to data collecting and transmitting nodes except the second data collecting and transmitting node, and when the second data of the marine riser are larger than or equal to a second set threshold value, the data receiving control node enters a third early warning mode to monitor the second data of the marine riser in real time.
2. The transmission method according to claim 1, characterized in that: and in the appointed time, the first data acquisition and transmission node continuously transmits the first data to the data receiving and control node by taking the transmission delay not less than the first data as a period.
3. The transmission method according to claim 1, characterized in that: in the second early warning mode, when the second data is greater than or equal to the second set threshold, the data receiving control node enters the third early warning mode and sends a second early warning control instruction to a second data collecting and transmitting node, and the second data collecting and transmitting node sends the second data to the data receiving control node within a specified time after receiving the second early warning control instruction.
4. The transmission method according to claim 1, characterized in that: and when the weather data is lower than the alarm line, the data receiving control node finishes the second early warning mode, and the data receiving control node resumes the steps 1 to 5.
5. The transmission method according to claim 1, characterized in that: and when the data receiving control node starts a second early warning mode, the data receiving control node closes the function of the first early warning mode.
6. The transmission method according to claim 3, characterized in that: and when the second data is smaller than a second set threshold or the second early warning mode is finished, the third early warning mode is finished.
7. The transmission method according to claim 1, characterized in that: the first data acquisition and transmission node is a corner data acquisition and transmission node, and the second data acquisition and transmission node at least comprises a stress data acquisition and transmission node.
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| CN104486005A (en) * | 2014-11-30 | 2015-04-01 | 华南理工大学 | Multi-node rapid communication method suitable for contention channel underwater acoustic network |
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| CN103556991A (en) * | 2013-11-07 | 2014-02-05 | 中国海洋石油总公司 | Deep water drilling data measuring and recording system and method |
| CN104486005A (en) * | 2014-11-30 | 2015-04-01 | 华南理工大学 | Multi-node rapid communication method suitable for contention channel underwater acoustic network |
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