CN112437484B - Networking method for underground engineering geological exploration wireless seismograph and wireless seismograph - Google Patents
Networking method for underground engineering geological exploration wireless seismograph and wireless seismograph Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention belongs to the field of tunnel wireless seismograph communication, and provides a tunnel wireless seismograph networking method and a wireless seismograph. The networking method of the tunnel seismograph is used for realizing networking of a master station and a plurality of terminals in the seismograph, and comprises the steps of automatically entering an active networking mode when the master station and the terminals are started; the active networking mode is that the terminal actively sends a networking request instruction to the master station, the master station stores the address of the terminal after receiving the instruction, and the active networking is completed after replying an agreement networking instruction; judging whether all terminals are successfully networked, if so, completing networking; otherwise, receiving a networking switching instruction, and entering a passive networking mode; the passive networking mode is that a master station broadcasts a passive networking instruction, after receiving the passive networking instruction, the terminals generate a networking request sequence according to the addresses of the terminals and the address list of the successfully-networked terminals, and the terminals sequentially send networking requests and complete networking with the master station in sequence. And the active networking mode and the passive networking mode are complementary to complete safe and efficient networking.
Description
Technical Field
The invention belongs to the field of tunnel wireless seismograph communication, and particularly relates to a tunnel wireless seismograph networking method and a wireless seismograph.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
When the wireless seismograph is used for tunnel advanced geological prediction operation in tunnel construction, due to the fact that space in a tunnel is narrow and small during tunnel construction, in order to guarantee smooth detection operation, detection personnel often select different numbers of terminals to form a network for detection according to field conditions. And during tunnel construction, the environment in the tunnel is bad, often is accompanied with a large amount of drippings, silt, these all cause the damage of terminal easily, and when some terminal damages, or some terminal leads to the electric quantity to be insufficient because forgetting to charge, need replace these faulty terminals with normal terminal of working.
The inventor finds that the general networking process is as follows: manually inputting the address of the terminal to be networked, when the address needs to be replaced, firstly deleting the address of the terminal with the fault, then inputting the address of the replaced terminal, and then polling networking by the master station. In practical use, the method is very inconvenient and time-consuming. Some ground wireless seismographs also adopt a complex ad hoc network technology, a protocol layer has multi-level routing, a data acquisition system requires strict consistency of data sampling pace, when a synchronization instruction transmitted in the data acquisition system adopting the complex ad hoc network technology is transmitted to each terminal, the passing routing levels and routing paths are different, delay time of command information transmission is different, namely the pace of receiving and confirming the synchronization command by each terminal is inconsistent, and the requirement of synchronous sampling cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides a tunnel wireless seismograph networking method and a wireless seismograph, which can flexibly and efficiently establish a network by using a wireless digital transmission technology under the condition that a master station does not know the number and the address of terminals, and realize the interconnection of the master station and the terminals and the strict synchronization of data acquisition.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a tunnel wireless seismograph networking method in a first aspect.
A networking method of a tunnel seismograph is used for realizing networking of a master station and a plurality of terminals in the seismograph, and comprises the following steps:
automatically entering an active networking mode when a master station and a terminal are started; the active networking mode is that the terminal actively sends a networking request instruction to the master station, the master station stores the address of the terminal after receiving the instruction, and the active networking is completed after replying an agreement networking instruction;
judging whether all terminals are successfully networked, if so, completing networking; otherwise, receiving a networking switching instruction, and entering a passive networking mode; the passive networking mode is that a master station broadcasts a passive networking instruction, after receiving the passive networking instruction, the terminals generate a networking request sequence according to the addresses of the terminals and the address list of the successfully-networked terminals, and the terminals sequentially send networking requests and complete networking with the master station in sequence.
A second aspect of the invention provides a wireless seismograph.
A wireless seismograph comprises a master station and a plurality of terminals, wherein the master station is used for receiving data transmitted by any terminal, any terminal is used for receiving data transmitted by the master station and other terminals, and networking is carried out by adopting the tunnel wireless seismograph networking method.
The invention has the beneficial effects that:
(1) the method comprises the steps that firstly, an active networking mode is automatically entered when a master station and a terminal are started; judging whether all terminals are successfully networked, if so, completing networking; otherwise, entering a passive networking mode, and completing safe and efficient networking by utilizing the complementation of the active networking mode and the passive networking mode.
(2) The invention utilizes the wireless digital transmission technology, and can flexibly and efficiently form a network under the condition that the master station does not know the number and the address of the terminals, thereby realizing the interconnection of the master station and the terminals and the strict synchronization of data acquisition.
(3) The invention can flexibly configure the terminals of the network and the number thereof, and the master station can automatically acquire the addresses and the number of the terminals, thereby avoiding the complexity of manual input; the communication instruction used by the invention is simple and safe, and the accuracy and high efficiency of communication are ensured; when the invention is used for networking, the communication between the master station and the terminal can be received by other terminals, thereby not only improving the networking efficiency, but also avoiding mutual interference.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a wireless seismograph configuration according to an embodiment of the present invention;
fig. 2 is a master station networking flow in an active networking mode according to an embodiment of the present invention;
fig. 3 is a terminal networking flow in an active networking mode according to an embodiment of the present invention;
fig. 4 is a master station networking flow in the passive networking mode according to the embodiment of the present invention;
fig. 5 is a terminal networking flow in the passive networking mode according to the embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The method is used for networking the master station and the plurality of terminals in the wireless seismograph. The networking of main website and a plurality of terminal in the wireless seismograph of this embodiment, the main website utilizes wireless transmission technology, realizes establishing connection with a plurality of terminals to store the address of terminal in the main website. As shown in fig. 1, the radio seismograph is composed of a master station and a plurality of terminals. The master station can receive data transmitted by any terminal; the terminal can receive data of the master station and other terminals.
The terminal described in this embodiment is a collecting terminal, and the structure of the terminal is an existing structure, for example, the terminal includes a detector for detecting a vibration signal in a corresponding direction. The structure of the acquisition terminal can be realized by adopting the existing structure, and the description is not repeated here.
The networking method of the tunnel wireless seismograph comprises the following steps:
automatically entering an active networking mode when a master station and a terminal are started; the active networking mode is that the terminal actively sends a networking request instruction to the master station, the master station stores the address of the terminal after receiving the instruction, and the active networking is completed after replying an agreement networking instruction;
judging whether all terminals are successfully networked, if so, completing networking; otherwise, receiving a networking switching instruction, and entering a passive networking mode; the passive networking mode is that a master station broadcasts a passive networking instruction, after receiving the passive networking instruction, the terminals generate a networking request sequence according to the addresses of the terminals and the address list of the successfully-networked terminals, and the terminals sequentially send networking requests and complete networking with the master station in sequence.
Specifically, the master station receives the number of networking terminals input in advance, and then judges whether all the terminals are successfully networked. If at least one terminal networking fails, receiving a networking switching instruction input from the outside (for example, manually input), and entering a passive networking mode.
In the embodiment, by using a wireless digital transmission technology, the master station still can flexibly and efficiently perform networking under the condition that the number and the address of the terminals are not known, and the interconnection of the master station and the terminals and the strict synchronization of data acquisition are realized.
The embodiment can flexibly configure the networking terminals and the number of the networking terminals, and the master station can automatically acquire the addresses and the number of the terminals, so that the complexity of manual input is avoided; the used communication instruction is concise and safe, and the accuracy and the high efficiency of communication are ensured; during networking, the communication between the master station and the terminals can be received by other terminals, so that the networking efficiency is improved, and mutual interference is avoided.
In this embodiment, the number of the terminals can be extended to 48 at most, and the address range is 1-48.
It should be noted that in other embodiments, the number of terminals may be other.
In this embodiment, the networking method can be implemented on the condition that each terminal has a unique address, and the address is used for calculating the delay of the terminal in the passive networking mode and distinguishing the receiving party of the wireless communication data.
Specifically, the networking request instruction comprises a networking request instruction word and a terminal address; the network agreeing instruction comprises a network agreeing instruction word and a terminal address.
The passive networking instruction comprises a passive networking command word and a successful networking terminal address table; the request networking instruction, the agreement networking instruction and the passive networking instruction are all 32-byte fixed-length instruction frames, and the instruction frames comprise a frame head, instruction words, addresses, data, whether subsequent frames exist or not, a checksum and a frame tail.
The networking request instruction, the networking agreement instruction and the passive networking instruction are all 32-byte fixed-length instruction frames, and the frame formats are as follows:
the request networking command frame comprises a request networking command and a terminal address, and the request networking command frame comprises 32 bytes in total and has the following format:
the agreement networking command frame contains a request networking command and a terminal address, and has 32 bytes in total, and the format is as follows:
the passive networking instruction frame broadcasted by the main station comprises 32 bytes of passive networking command words, broadcast addresses and an address table IDsn of a successful networking terminal, and the format is as follows:
if the number of bytes needed by the successfully-networked terminal address table IDsn is more than 26 bytes, the passive networking instruction broadcasted by the main station has 2 frames, wherein the 30 th byte in the 1 st frame is set as a subsequent frame, and the 30 th byte in the 2 nd frame is set as no subsequent frame.
As shown in fig. 2, the networking process of the master station in the active networking mode is as follows:
(1.1) after the master station is started, entering an active networking mode;
(1.2) judging whether a networking request instruction frame sent by a terminal is received, if so, executing the step (1.3), otherwise, executing the step (1.4);
(1.3) adding the address of the master station terminal into a successful networking address table IDsn, and replying a networking agreement instruction frame;
and (1.4) judging whether the current networking mode is still the active networking mode, if so, executing the step (1.2), otherwise, ending the active networking mode.
As shown in fig. 3, the networking process of the terminal in the active networking mode is as follows:
(2.1) after the terminal is started, entering an active networking mode;
(2.2) setting the self networking flag position to be 0 to indicate that no networking is performed; setting the networking attempt times Nt to be 0;
(2.3) detecting whether communication is carried out in the air within preset time Tk, if so, executing the step (2.4), otherwise, executing the step (2.5);
(2.4) if the number of attempted networking times Nt is equal to Nt +1, determining whether the number of attempted networking times Nt is greater than a preset number Nz, if so, executing the step (2.9), otherwise, executing the step (2.3);
(2.5) transmitting a request networking command frame;
(2.6) detecting whether a network connection approval instruction frame replied by the master station is received or not within a preset time Tw1, if so, executing the step (2.7), otherwise, executing the step (2.4);
(2.7) setting the self networking flag position as 1 by the terminal to indicate that networking is performed;
(2.8) successfully networking the terminal, exiting the active networking mode, and ending the process;
and (2.9) the terminal fails in networking, exits from the active networking mode, enters into the passive networking mode, and the process is finished.
As shown in fig. 4, the networking process of the master station in the passive networking mode is as follows:
(3.1) the master station enters a passive networking mode;
(3.2) the master station reads the stored address table IDsn of the successfully networking terminal;
(3.3) the master station broadcasts a passive networking instruction frame, wherein the instruction frame comprises an address table IDsn of a successful networking terminal;
(3.4) the master station starts a delay Tzd ═ Ts (total number of terminals-number of terminals in IDsn); wherein Ts is not less than the transmission time of one complete frame; wherein, the total number of terminals in the embodiment is 48;
(3.5) detecting whether a networking request command frame of a certain terminal is received within the delay time Tzd, if so, executing the step (3.6), otherwise, executing the step (3.7);
(3.6) the master station terminates the time delay, adds the terminal address into the IDsn, replies a network command agreeing frame, and then executes the step (3.4);
and (3.7) the master station exits the passive networking mode, and the process is terminated.
As shown in fig. 5, the networking process of the terminal in the passive networking mode is as follows:
(4.1) after receiving the passive networking instruction frame, the terminal enters a passive networking mode;
(4.2) judging whether the self address IDb is in the successful networking terminal address table IDsn, if so, executing the step (4.10), otherwise, executing the step (4.3);
(4.3) the terminal calculates and generates a networking sequence number Nsx according to the address IDb of the terminal and the received address table IDsn; the number of terminals smaller than IDb in Nsx-IDsn-1;
(4.4) the terminal starts delaying, the delay time Td is Nsx Ts, and the networking attempt time Nt is set to be 0;
(4.5) detecting whether a networking request command frame of other terminals is received within a time delay Td, if so, executing the step (4.6), otherwise, executing the step (4.8);
(4.6) time delay is terminated; detecting whether a network connection agreement instruction frame of the master station replying to other terminals is received or not within a preset time Tw2, if so, executing the step (4.7), otherwise, executing the step (4.13);
(4.7) the terminal re-calculates the generated networking sequence number Nsx ═ Nsx-1, and then performs step (4.4);
(4.8) transmitting a request networking command frame;
(4.9) detecting whether a network connection approval instruction frame replied by the master station is received within a preset time Tw1, if so, executing the step (4.10), otherwise, executing the step 11;
(4.10) setting the self networking flag position to be 1 to indicate that networking is performed, and executing the step (4.12);
(4.11) requesting the networking attempt word number Nt to be equal to Nt +1, determining whether Nt is greater than a preset number Nz, if so, executing step (4.13); otherwise, executing the step (4.9);
(4.12) the terminal successfully networks, exits from the passive networking mode, and the process is finished;
and (4.13) the terminal fails in networking, exits from the passive networking mode and ends the process.
In one or more embodiments, the tunnel seismograph comprises a master station and a plurality of terminals, wherein the master station is used for receiving data transmitted by any terminal, and any terminal is used for receiving data transmitted by the master station and other terminals, and networking is performed by adopting the tunnel seismograph networking method.
The embodiment automatically enters an active networking mode when a master station and a terminal are started; judging whether all terminals are successfully networked, if so, completing networking; otherwise, entering a passive networking mode, and completing safe and efficient networking by utilizing the complementation of the active networking mode and the passive networking mode.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A networking method for a tunnel wireless seismograph is characterized by being used for realizing networking of a master station and a plurality of terminals in the wireless seismograph and comprising the following steps:
automatically entering an active networking mode when a master station and a terminal are started; the active networking mode is that the terminal actively sends a networking request instruction to the master station, the master station stores the address of the terminal after receiving the instruction, and the active networking is completed after replying an agreement networking instruction;
judging whether all terminals are successfully networked, if so, completing networking; otherwise, receiving a networking switching instruction, and entering a passive networking mode; the passive networking mode is that a master station broadcasts a passive networking instruction, after receiving the passive networking instruction, the terminals generate a networking request sequence according to self addresses and a successful networking terminal address table read and stored from the master station, and the terminals sequentially send networking requests to complete networking with the master station in sequence.
2. The networking method for the tunnel seismograph of claim 1, wherein the networking method is implemented on the condition that each terminal has a unique address, and the address is used for calculating the time delay of the terminal in the passive networking mode and distinguishing the receiving party of the wireless communication data.
3. The networking method for the tunnel seismograph as claimed in claim 1, wherein the networking request command comprises a networking request command word and a terminal address.
4. The tunneling wireless seismograph networking method of claim 1, wherein the networking approval command comprises a networking approval command word and a terminal address.
5. The networking method for the tunnel seismograph as claimed in claim 1, wherein the passive networking instruction comprises a passive networking command word and a successful networking terminal address table.
6. The networking method of a tunnel seismograph as claimed in claim 1, wherein the request networking command, the agreement networking command and the passive networking command are all 32-byte fixed-length command frames.
7. The networking method of the tunnel wireless seismograph of claim 1, wherein in the active networking mode, the networking process of the terminal is as follows:
initializing a self networking flag bit and trying networking times;
whether a wireless signal exists or not is detected, the number of attempted networking times is increased, and when the number of attempted networking times exceeds the preset number, the active networking mode is exited, and the passive networking mode is entered;
after the terminal sends a networking request instruction, whether networking is successful is judged according to whether a networking approval instruction replied by the master station is detected within a preset time, and if the networking is successful, the self networking mark position is 1.
8. The networking method of the tunnel seismograph of claim 1, wherein in the passive networking mode, the networking flow of the master station is as follows:
the master station reads the stored address table IDsn of the successfully networking terminal and broadcasts a passive networking command frame, wherein the command frame comprises the address table IDsn of the successfully networking terminal;
the master station starts delaying Tzd ═ Ts (total number of terminals — number of terminals in IDsn); wherein Ts is not less than the transmission time of one complete frame;
detecting whether a networking request instruction frame of a certain terminal is received or not within the delay time Tzd, if so, terminating the delay of the master station, adding the address of the terminal into the IDsn, replying a networking agreement instruction frame, and continuing delaying by the master station until all terminals are successfully networked; otherwise, the master station exits the passive networking mode, and the process is terminated.
9. The networking method of a tunnel seismograph according to claim 1, wherein in the passive networking mode, in the process of the networking process of the terminal, when the self address IDb of the terminal is not in the successful networking terminal address table IDsn, the networking sequence number Nsx is generated by calculation according to the self address IDb and the received address table IDsn; the number of terminals smaller than IDb in Nsx-IDsn-IDb-IDsn-1.
10. A tunnel seismograph is characterized by comprising a master station and a plurality of terminals, wherein the master station is used for receiving data transmitted by any terminal, any terminal is used for receiving data transmitted by the master station and other terminals, and networking is performed by adopting the networking method of the tunnel seismograph as claimed in any one of claims 1 to 9.
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| CN112437484A (en) | 2021-03-02 |
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