CN113518363A

CN113518363A - Long-distance reverse signal transmission method of latticed pipe gallery early warning system

Info

Publication number: CN113518363A
Application number: CN202110820567.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shaanxi Modouxing Intelligent Technology Co ltd
Current assignee: Shaanxi Modouxing Intelligent Technology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-10-19

Abstract

The invention discloses a long-distance reverse signal transmission method of a latticed pipe gallery early warning system. And defining the latticed pipe gallery as a warp direction and a weft direction according to the trend to form a cross-like coordinate system, and establishing a coordinate origin at the inlet and the outlet of the pipe gallery. All the pipe galleries are numbered in sequence, and the inspection wells of all the pipe galleries are also numbered according to the rule of a cross coordinate system. The server sends an instruction to enter a pipe gallery coordinate system from the origin of coordinates; then, transmitting the instruction to any appointed node in the early warning system through exhaustive search in 3 directions; the command sent by the server can be transmitted in a long distance in a complex latticed communication network.

Description

Long-distance reverse signal transmission method of latticed pipe gallery early warning system

Technical Field

The invention belongs to the technical field of early warning, and particularly relates to a grid-shaped city pipe gallery management and control system.

Background

The city pipe gallery brings various power supply cables, communication cables, water supply pipelines, energy pipelines and the like on the ground into the ground, and forcefully promotes the modernized construction of the city. However, with the construction success and operation of urban pipe corridors, the subsequent management of pipe corridors becomes a new requirement. However, the early warning system technology in the internet of things mode has difficulty in application of the pipe gallery. The patent 'a long-distance signal transmission method of a latticed pipe gallery early warning system', with the patent number of 202110498444.2, finds a long-distance transmission method in a latticed pipe gallery, and solves the problem of signal and data transmission in the application of the early warning system technology of the internet of things technology mode in the pipe gallery; the long-distance uploading of the signals of any node in the early warning system to the server is realized.

However, the technology of the patent 202110498444.2 is an extension on the basis of the patent "a warning system for unidirectional data transmission" (number: 202110200411.5), and therefore, the characteristics and the defects of unidirectional data transmission are inherited. The invention of patent 202110200411.5 is mainly to solve the problem of data congestion of a large-scale early warning system in a classic internet of things mode, and realize the large-scale of a linear early warning system; the specific measures implemented are to change the two-way data transmission in the classic internet of things mode into one-way data transmission. The two-way communication characteristic of the traditional early warning system is that 'fool data is uploaded to a server, and an intelligent signal of the server is transmitted to a node'; the fool data refers to data transmitted in the early warning system and has no complete technical definition; the relay node in the early warning system cannot interpret the technical significance of the data, and cannot process the data; for example, a node receives data 15, the node does not know at all what this data 15 represents; thus, only the data 15 has to be uploaded to the server, and only the server can finally interpret the technical meaning of the data 15 and apply it correctly. The intelligent signal is in the whole early warning system and has strict technical definition; for example, the signal J15S represents that the node 15 water level sensor sends out a signal. Thus, when any node receives the signal J15S, the technical meaning of the signal is directly understood, and then the corresponding correct operation can be made. In the traditional early warning system, each node uploads the foolproof data of each sensor to a server, and the server performs data processing in a centralized manner; then, an intelligent instruction is given to the early warning system in the reverse direction. The function of the patent 202110200411.5 is to upload the fool data of the traditional early warning system to the server, and the intelligent signal of the server is issued to the node, the technical mode is changed into the technical mode of the fool data to be processed on the node, and only the intelligent signal generated by the node is uploaded to the server; therefore, the congenital defect that the early warning signal is delayed for a long time due to data congestion of the traditional early warning system is thoroughly eliminated.

The patent 202110498444.2 focuses on solving the problem of long-distance signal transmission of the grid-shaped early warning system which is more difficult than the linear large-scale early warning system in the technical principle of the patent 202110200411.5; however, the specific measures implemented still follow the mode of unidirectional data transmission of patent 202110200411.5. Recently, the inventor has successfully developed a grid-shaped early warning system according to the technical method of patent 202110498444.2. In the process of testing products, it is found that the large-scale early warning system can realize the long-distance rapid transmission of bidirectional signals no matter in a linear shape or a grid shape as long as the technical idea of 'only transmitting intelligent signals and not transmitting foolproof data' specified in the patent 202110200411.5 is adhered to. The invention is continuously developed on the technology of patent 202110498444.2, and aims to further improve the performance of patent 202110498444.2 and overcome the defect that the target node cannot be reached by completing the instructions of the server of the grid-shaped early warning system in the reverse direction.

However, when the patent 202110498444.2 realizes that the signals of the latticed early warning system are uploaded to the server, the spatial position of the physical connection between the server and the early warning system is implicitly fixed at a permanent position, which is the origin of coordinates of the coordinate system of the pipe rack; for example, the origin of coordinates is located in inspection well number 64 of latitudinal tube corridor number 64, and the coordinate of the origin is marked as W64Y 64. Therefore, any node in the early warning system relays the signal to the direction of the origin W64Y64, so as to realize the signal uploading to the server. In other words, in patent 202110498444.2, all nodes of the warning system transmit signals to the spatial position of the origin W64Y64, and the signal uploading is concentric in spatial distribution. However, the problem to be solved by the present invention is that the target node may be located at any one node, not only at the spatial position of the origin W64Y64, according to the instructions given by the server to the designated node. In other words, the instruction download of the present invention is radial in spatial distribution; after an instruction enters the early warning system at the origin point W64Y64, only the target node is known to be around the origin point, but not the specific direction and distance. Therefore, the technical difficulty of the invention is greater when the server to be realized transmits the instruction to the designated node than when the node signal of patent 202110498444.2 is uploaded to the server. The present invention and patent 202110498444.2 both solve the problem of grid-shaped pipe gallery electronic signal transmission, and although the difference is only that the signal transmission direction is opposite, the transmission method of patent 202110498444.2 cannot be directly followed due to the difference of the spatial distribution of signal transmission, but a new transmission method must be invented.

At present, a server is implemented in a complex grid-shaped pipe gallery to give instructions to a designated node, and a feasible technical route is to adopt a 5G base station; the optical fiber connected between the 5G base stations has huge broadband of hundreds of channels, and can provide enough communication resources for the latticed pipe gallery early warning system. However, the 5G technology requires extremely high construction cost and operation cost, and is not suitable for large-scale pipe corridors with the mileage reaching dozens of kilometers or even hundreds of kilometers. For a large-scale pipe gallery early warning system, a practical technical route still adopts communication chips which are mainstream in the field, such as ZIGBEE, 433, 2.4G and the like. However, the problem is that since the communication chips such as ZIGBEE, 433, 2.4G are all single channels, homogeneous signal collision occurs in the complex grid-shaped pipe gallery, and thus the signals cancel each other and the mystery disappears (regarding homogeneous signal collision, detailed in patent 202110498444.2). A brief description of homogeneous signal collision is provided here, which makes it possible to understand the principle from 2 comparative examples. If a power cable, the conductor contained in the power cable is divided into two equal parts to form two independent small cables; two separate small cables are then combined together, and the combined cable can be used in a power circuit without any problems. However, if one communication cable is split into two separate small communication cables, it cannot be recombined; because the electronic signals in the two small communication cables come from the same signal source, once the two small communication cables are combined, homogeneous signal collision is generated immediately, and two homogeneous signals are mutually cancelled and disappear. In a complex latticed pipe gallery communication network, the longer the distance of instruction transmission, the more grids need to pass through, and the higher the probability that the instruction generates collision at the intersection of the grids; the instructions issued by the server to the early warning system are submerged by the collision of a plurality of homogeneous instructions before the target node is not found, and the issuing of the instructions fails. The mission of the invention is to create a new electronic signal communication method, when various single-channel communication chips such as ZIGBEE, 433, 2.4G and the like are continuously used, the server can issue instructions to the designated nodes in the complex latticed pipe gallery communication network, the instructions are transmitted in a long distance in the complex latticed pipe gallery communication network, the collision of homogeneous instructions is avoided, and finally, the long-distance high-quality electronic signal communication in the complex latticed pipe gallery communication network is realized.

Disclosure of Invention

The invention aims to provide a method for reversely transmitting a server instruction to a target node in a long distance by a single channel for a latticed complex communication network, which is suitable for any communication network and is particularly suitable for an underground urban pipe gallery early warning system.

The invention is realized by the following technical scheme:

a long-distance reverse signal transmission method of a latticed pipe gallery early warning system comprises the following steps: in the grid-shaped underground pipe gallery, establishing a coordinate system origin of the early warning system at the approximate physical center; the specific tube corridor where the coordinate origin is located is defined as a baseline tube corridor, and the baseline can be in the warp direction or the weft direction; the server gives an instruction to any node of the pipe gallery, and the instruction enters the pipe gallery system through the origin of coordinates. In a word, in physics, the instruction that the server was assigned to latticed pipe gallery early warning system all will be passed through the origin of coordinates, transmits in latticed pipe gallery early warning system.

Further, each node may transmit two types of signals; one is a signal uploaded to the server by the node, and the second is an operation instruction issued to a specified target node by the server; the uploaded signals and the issued commands have different formats, and the nodes can recognize the signals; after the node identifies the signal type, the relay operation with different transmission directions is executed. The node communications in patent 202110498444.2 are unidirectional, with only one direction for the node to upload to the server. According to the invention, the reverse server instruction is added to the early warning system and transmitted to the node direction, so that each node of the early warning system is required to support two types of signals.

Further, the instruction sent by the server to the early warning system includes the geographic information of the target node, that is, the instruction includes the geographic information of the destination to be reached. For example, the geographic information of node 3 below inspection well number 32 of latitudinal tube corridor number 66 is marked as W66Y 3203; the server sends an order to the node containing the geographical information W66Y3203 so that each relay node knows the final destination of the order.

Further, after entering from the origin of coordinates, the instructions issued by the server are transmitted to two sides along the baseline pipe gallery; the transmission on the baseline is not limited by any condition until each node on the baseline is traversed; the transmission of the command over the baseline is defined as a primary transmission. The entrance and exit of the pipe gallery are always established on a pipe gallery with a wide space, and a cable of the pipe gallery early warning system also extends out of the entrance and exit to communicate with the server; this port is the origin of the tube lane coordinate system. Thus, the origin of the tube lane coordinate system is not at a tube lane intersection (construction difficulty), but is usually at the entrance to and exit from the approximate middle of a tube lane. When a server issues an instruction to a pipe gallery system, the instruction directly enters the middle section of a pipe gallery after entering an entrance and an exit; the command is transmitted in opposite directions along this pipe lane. This profile is the baseline profile, and the instructions transmitted at the baseline without any conditional restrictions will traverse each node at the baseline until both ends of the baseline profile are reached. The transmission of the command on the baseline is defined as primary transmission, and in the transmission process, any target node on the baseline can be found assuredly to complete the command issuing of the server to the first type of target node.

Further, the instructions are transmitted in a traversal mode on the base line, when passing through each pipe gallery intersection point, the instructions are split into homogeneous instructions in three directions, and one instruction is transmitted continuously along the base line; the other two instructions can be transmitted to the left direction and the right direction on the two sides of the base line respectively; two homogeneous instructions are transmitted in the left direction and the right direction on two sides of the base line, and are defined as two-stage transmission; the secondary transmission is conditionally restricted, whether or not to implement the transmission is determined by the direction of the target geographic information contained within the instruction. In a grid-like tube lane, the baseline tube lane necessarily intersects many approximately perpendicular tube lanes and forms many intersections. When an instruction passes through a cross point, the instruction is immediately split into three same instructions; one of the instructions continues to be transmitted along the baseline, which is a one-stage transmission without any restrictions. Homogeneous instructions in other two directions can be diverted from the baseline pipe gallery to the vertically crossed pipe gallery and transmitted on the vertically crossed pipe gallery; this is a two-stage transmission. The secondary transmission is conditional, with the limiting factor being the direction of the targeted geographic information contained within the instruction. Thus, secondary transmission may or may not be performed at an intersection, depending on the direction of the targeted geographic information contained within the instruction.

Further, the instruction secondary transmission is limited by the direction of the target geographic information contained in the instruction, and if the direction of the target geographic information contained in the instruction is different from the directions of the left pipe gallery and the right pipe gallery, the secondary transmission can be implemented; if the directions are the same, continuously checking whether the number of the pipe gallery of the target geographic information contained in the instruction is the same as the numbers of the pipe galleries on the left side and the right side, and if so, implementing secondary transmission; if the numbers are not the same, secondary transmission is rejected. That is, whether the secondary transmission is performed at a cross-point, first look at the direction of the destination node; if the target node is located on a latitudinal pipe gallery parallel to the base line, the target instruction is different from the secondary transmission direction, and secondary transmission can be formed; if the target node is located on a radial pipe gallery perpendicular to the base line, the target instruction is the same as the secondary transmission direction, and whether the number of the pipe gallery contained in the radial target instruction is the same as the number of the encountered radial pipe gallery is checked; if the numbers of the pipe galleries are different, secondary transmission is not executed; if the numbers are the same, secondary transmission is performed. In short, the instructions of the first-level transmission can form second-level transmission at the intersection point of the pipe gallery, and whether the directions are the same or not is firstly seen, and then whether the numbers of the pipe galleries are the same or not is seen.

Further, when the instruction secondary transmission is implemented because the direction of the target geographic information contained in the instruction is different from the directions of the left and right pipe corridors, if the direction of the target geographic information contained in the instruction is the same as the directions of the left and right pipe corridors and the numbers of the pipe corridors are the same, the relay node calculates the difference value between the spatial coordinates of the geographic information of the relay node and the spatial coordinates of the target geographic information contained in the instruction; if the difference value of the relay transmission direction becomes smaller, the relay node implements the relay; and if the difference value of the relay transmission directions becomes larger, the relay node refuses the relay. The first-level transmission is instructed to form second-level transmission after rotating 90 degrees in the direction of the intersection point of the pipe rack, and the geographic information direction and the pipe rack number contained in the instruction of the second-level transmission are the same as the geographic information of the pipe rack where the second-level instruction is transmitted, so that the instruction of the second-level transmission is indicated to be on the same pipe rack where the target node is located; the difference between the instruction transmitted in the second level and the target node is only the coordinate value of the pipe gallery. The relay node at this time only needs to judge: if the command is relayed, the coordinate value difference between the command and the target node is reduced, and then the relay is executed; otherwise, if the difference in coordinate values between the instruction and the target node is to be increased, no relay is performed. The target node is successfully found in a pipe gallery perpendicular to the baseline, and the server issues an instruction to the second target node.

Further, when the instruction secondary transmission is implemented because the directions of the target geographic information contained in the instruction are the same, but the numbers of the pipe corridors are the same as those of the pipe corridors on the left side and the right side, when the pipe corridors pass through the intersection points of the pipe corridors in the transmission process, the secondary transmission instruction is also split into homogeneous instructions in three directions, and one instruction is continuously transmitted along the direction of the secondary transmission; the other two homogeneous instructions can be respectively transmitted to the left direction and the right direction at the two sides of the secondary transmission pipe gallery until the end of the secondary transmission pipe gallery; the homogeneous instructions split from the secondary transmission are transmitted in the left direction and the right direction on two sides of the secondary transmission pipe gallery and are defined as three-level transmission; if the pipe gallery number of the target geographic information contained in the instruction is the same as the pipe gallery number of the intersection point, implementing three-level transmission; if not, rejecting three-stage transmission. This is a target finding method where the target node is located on a pipe lane with a direction parallel to the direction of the baseline pipe lane. At the moment, all the pipe galleries vertical to the baseline pipe gallery are subjected to secondary transmission; however, the target node is not located in all pipe lanes perpendicular to the baseline pipe lane, so even if the secondary transmission traverses all pipe lanes perpendicular to the baseline pipe lane, the target node will not be found. This then requires that the second level of transmitted instructions generate a third level of transmission to the pipe lane parallel to the baseline pipe lane to find the target. Therefore, in the secondary transmission process, when the pipe gallery intersection is encountered, the secondary transmission instruction is split into three homogeneous instructions at the intersection; one of the three homogeneous instructions is still a secondary transmission instruction, and secondary transmission is continued without limitation; while the other two homogeneous commands produce a tertiary transfer in the direction perpendicular to the secondary transfer. However, the second-level transmission does not require the generation of the third-level transmission at each intersection, but the third-level transmission is performed only if the pipe rack number is the same as the pipe rack number of the geographic information included in the target instruction; and the other pipe galleries with different numbers do not generate three-stage transmission. Obviously, the direction of the target node is the same as the direction of the third-level transmission, and the third-level transmission is implemented only when the pipe lane number of the target node is the same as the pipe lane number of the third-level transmission.

Further, when the three-level transmission is implemented because the number of the target geographic information pipe gallery contained in the instruction is the same as the number of the pipe gallery at the left side and the right side, the relay node calculates the difference value between the spatial coordinate of the geographic information of the relay node and the spatial coordinate of the target geographic information contained in the instruction; if the difference value of the relay transmission direction becomes smaller, the relay node implements the relay; and if the difference value of the relay transmission directions becomes larger, the relay node refuses the relay. When the geographic information direction of the target node is parallel to the base line, the target node is approached finally according to the coordinate value of the same pipe rack after the pipe rack where the target node is located is searched through secondary transmission. This is the most difficult case for the third target node to search successfully.

Further, each node pair has the same geographical information of the command, within a specified short time, only one relay transmission is made. Although the invention has taken as many erroneous transmission command rejection relays as possible, in the pipe corridor near the origin, it may still occur that commands in multiple directions converge toward the origin, thereby causing homogeneous command collisions. Thus, the present invention again uses the method of patent 202110498444.2, where each node transmits a command carrying the same geographical information only once within a specified time period. This approach, while simple, is very effective in keeping the electromagnetic space clean as the instruction approaches the target node so that the instruction reaches the target node.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of a grid piping lane system;

FIG. 2 is a schematic diagram of a one-level transfer of instructions across nodes on a baseline pipe lane and completion of target instruction delivery;

FIG. 3 is a schematic diagram of a command to generate a two-stage transfer command on a baseline tube lane through a tube lane intersection;

FIG. 4 is a schematic diagram of a target node being located on a pipe lane that is perpendicular to a baseline pipe lane, with secondary transmission occurring only on the only perpendicular pipe lane having the same pipe lane number, and with the secondary transmission completing the delivery of the target node;

FIG. 5 is a schematic illustration of a target node located on a pipe lane parallel to a baseline pipe lane, with secondary transport occurring on all pipe lanes perpendicular to the baseline pipe lane;

FIG. 6 is a schematic diagram of a two-level transfer of instructions through a pipe lane intersection to generate a three-level transfer of instructions;

FIG. 7 is a schematic diagram of a target node being located on a pipe lane parallel to a baseline pipe lane, three-stage transmission occurring only on a unique parallel pipe lane with the same pipe lane number, and the target node being delivered by the three-stage transmission;

FIG. 8 is a schematic diagram of homogeneous instructions going through different loops towards a target node set;

reference numbers and corresponding part names in the drawings:

0 is the origin of a coordinate system of a pipe gallery, 1 is a base line pipe gallery, 2 is a common latitudinal pipe gallery, 3 is a common longitudinal pipe gallery, 4 is a target node positioned in the base line pipe gallery, 5 is a target node positioned in the longitudinal pipe gallery, 6 is a target node positioned in the common latitudinal pipe gallery, 7 is a first-stage transmission command without conditional limitation on a base line, 8 is a second-stage transmission command of one direction split by the base line first-stage transmission command through a cross point, 9 is a second-stage transmission command of the other direction split by the base line first-stage transmission command through the cross point, 10 is a second-stage transmission command to continue to be transmitted after passing through the cross point, 11 is a third-stage transmission command of one direction split by the second-stage command through the cross point, 12 is a third-stage transmission command of the other direction split by the second-stage transmission command through the cross point, 13 is a pipe gallery not executed by the base line transmission command because of pipe gallery numbers different from the second-stage transmission, and 14, the second-level transmission command does not execute the third-level transmission due to different numbers of the pipe racks.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

firstly, the invention adheres to the framework of patent 202110498444.2, and processes the foolproof data on the node on the spot, thereby fundamentally ensuring that the novel early warning system does not have data congestion like a classical early warning system; therefore, under the condition that the communication smoothness of the whole early warning system is ensured, the intelligent signals are not only uploaded or issued, but also can be managed to realize the seal. Therefore, the invention adds the reverse communication function, and the advanced technical mechanisms of patent 202110200411.5 and patent 202110498444.2 are not destroyed; but a function expansion is made on the basis of an advanced technical mechanism; the reverse communication formed in claim 1 is technically guaranteed. To minimize the transmission distance of the commands, the origin of coordinates 0 is always located at the approximate physical center of the tube lane system, as shown in fig. 1. In fig. 1, the particular latitudinal tube lane in which the origin of coordinates 0 is located is referred to herein as the baseline tube lane 1; after entering baseline pipe lane 1 from origin of coordinates 0, the instructions are first transmitted along the baseline pipe lane. The longitude and the latitude defined by the coordinate system of the pipe gallery are not the longitude and latitude directions in the map, but any one direction of the latticed pipe gallery is set as the longitude or the latitude; the concept of longitude and latitude is only used for expressing the pipe gallery in different directions.

Example 2:

in implementing the reverse communication of claim 1, the present invention provides that the upload signal of the node and the order issued by the server have different formats; therefore, when each node in the early warning system receives an electronic signal, the node can judge the direction to which the signal should be relayed. In essence, the signals uploaded by the nodes and the commands issued by the server are both electronic data, and for convenience of description, the electronic data uploaded from the nodes are described as signals and the electronic data issued in reverse from the server are described as commands. The signals and instructions have slightly different formats so that the nodes can be accurately identified; this is the expression of claim 2. In the actual product development, as long as the uploaded signals and the issued commands have the same data length, the method can be smoothly implemented no matter uplink transmission or downlink transmission; the format of the data has no impact on the transmission performance. The node of patent 202110498444.2 only has uplink transmission capability, and the invention increases the downlink transmission capability, namely, perfects the novel early warning system with bidirectional transmission; therefore, each node of the early warning system of the present invention must be able to recognize the uplink and downlink directions of the signal and make a correct relay operation.

Example 3:

the command issued by the server must contain the geographic information of the target node; for example, to issue a command to node 2 below inspection well No. 78 of warp pipe gallery No. 55, the geographic information J55Y7802 must be included in the command. After each node receives the instruction, it can look at the geographic information J55Y7802 to understand where the destination to which the instruction is destined is, and then determine how to process the instruction. This is the expression of claim 3.

Example 4:

after entering the baseline pipe gallery 1 from the origin of coordinates 0, the command is transmitted to two sides along the baseline pipe gallery, as shown in fig. 2; the transmission on the baseline pipe gallery 1 is unconditional transmission, and each node on the baseline must obtain an instruction; this instruction transfer at baseline is referred to herein as a primary transfer. For example, the baseline pipe gallery is numbered as a latitudinal 64-th pipe gallery, and the origin of coordinates of the baseline pipe gallery is located between inspection wells No. 64 and No. 65; thus, the origin of coordinates 0 is identified as W64Y 64. The server instructs the target node 4 located in inspection well No. 99 on the base line, and the geographic information W64Y99 of the node is necessary to be contained. Claim 4 specifies that the transmission of instructions over baseline 1 must be ergodic, so that the target node 4 must receive the instruction; the first type of instruction placement may successfully reach the target node.

Example 5:

the instructions are transmitted along the baseline tube lane 1, and the intersection points of the tube lanes are necessarily encountered in the grid-shaped tube lane system; the instruction travels left from origin 0 to intersection P, Q as in fig. 3, and so on. The present invention adopts the method of patent 202110498444.2, and a signal splitter is installed at the cross point to split the command from the base line into the same 3

homogeneous commands

7, 8, 9. The transmission of instruction 7 is on the baseline and thus still belongs to the primary transmission; according to the provisions of claim 4, the transmission of instruction 7 is unconditionally restricted and therefore continues to the left. Thus, all tube lane intersections of baseline 1 would produce such a one-to-three commanded condition.

However, the one-to-three mechanism of the instructions at each intersection point can cause the number of homogeneous instructions in the whole pipe gallery system to be increased explosively, and homogeneous instruction collision can inevitably occur; the server-issued command is overwhelmed by the explosively increasing homogenous command, and thus the server's command issuance fails. The specific details of this command being overwhelmed by a homogeneous signal, as explained in detail in patent 202110498444.2; except that the direction of the collision of the instructions in the present invention to produce homogeneous instructions is opposite to the direction of the upload signal in patent 202110498444.2; however, the principle is exactly the same.

In order to avoid homogeneous command collision, the command transmitted in the wrong direction in fig. 3 must be eliminated in time and in real time, and a clean electromagnetic space is maintained for the command transmitted in the right direction; this necessarily limits the occurrence of

secondary transfer instructions

8 and 9. The invention uses the direction of the geographical information of the target node as a condition for limiting the secondary transmission instruction, which is the expression of claim 5.

Example 6:

the instructions issued by the server are divided into two types, one is that the target node is located on the warp pipe gallery node perpendicular to the baseline in fig. 1, such as node 5 in fig. 1; the other is at the latitudinal tube corridor node parallel to the baseline, as in the case of node 6 in fig. 1. For example, node 5 in fig. 1 is node 2 below inspection well of No. 55 longitudinal pipe gallery No. 78, and its geographic information J55Y 7802; node 6 in fig. 1 is node 3 below inspection well # 62 of latitudinal pipe corridor # 66, whose geographic information is identified as W66Y 6203. If the server issues an instruction to node 5 in FIG. 1, the instruction enters the baseline pipe rack 1 at position 0 in FIG. 3 and the intersection point P is transmitted. At the intersection point P, the tube lane intersecting the baseline tube lane is necessarily a vertical meridional tube lane; the number is 57 for example, and the geographic information of the nodes of the cross pipe gallery is J57Y 6401. When the node J55Y6401 receives a homogeneous instruction 8 of the target instruction J55Y7802, the directions are all meridional J, so comparison of the lane numbers continues. At intersection point P, the tube lane number is 57, and the tube lane number of target command J55Y7802 is 55; obviously, the tube lane numbering is not the same, and the secondary transmission signal 8 is not implemented. Similarly, the first-level transmission is transmitted to the bottom intersection point Q, the pipe gallery number of the first-level transmission is 56, the number of the pipe gallery is still different from that of the target node pipe gallery number 55, and the second-level transmission signal 8 is still not implemented. Only up to the intersection A, the tube lane number is 55, exactly the same as the tube lane number 55 of the target command J55Y7802, whereupon the secondary transmission signal 8 is implemented immediately! It can be seen that although the primary transmission traverses all the pipe gallery intersections on the base line 1, when the direction of the target node is perpendicular to the base line direction, only one pipe gallery at the intersection a will have the secondary transmission; and the other warp tube lanes 13 can not generate secondary transmission, so that the generation quantity of

homogeneous instructions

8 and 9 is greatly reduced, and the electromagnetic space cleanness of the early warning system is well maintained. This is the part of claim 6.

Looking again at fig. 5, the situation is where the server issues an instruction to a target node 6 that is located parallel to the baseline pipe lane. Assuming that the target node 6 is located on latitudinal tube corridor # 66, its geographic information W66Y 6203; the command enters the baseline profile 1 at the origin 0 position in fig. 5 and transmits the intersection point P; at intersection P, the node geographical information of the intersecting pipe lane is J57Y 6401. Obviously, the cross point direction is J and the target node direction is W; thus, both

homogeneity instructions

8, 9 in fig. 5 are implemented. Similarly, when the instruction is transmitted to the intersection Q, the direction of the intersection is also J, and the direction of the target node is W; the two directions are different, so that the serial numbers of the pipe galleries do not need to be continuously compared, and the secondary transmission is directly implemented. Thus, there are two orders transmitted in all the tube lanes perpendicular to the baseline tube lane 1, on both the top and bottom sides of the baseline tube lane 1, resulting in an omni-directional vertical search, which is also part of claim 6.

Example 7:

obviously, the secondary transmission in fig. 4 has been located on the same pipe lane as the target node 5; two-level

transmission homogeneity instructions

8, 9 are formed at the intersection point a; instruction 8 then passes upward and instruction 9 passes downward. As previously described, the geographic information of the target instruction is J55Y 7802; one of the

homogeneous instructions

8, 9 of the secondary transmission must reach the target node 5 and the other one becomes more and more distant from the target node 5. According to the provisions of patent 202110498444.2: the coordinate value starting point of the radial pipe gallery 3 is below, and the coordinate value is larger upwards; the coordinate value starting point of the latitudinal tube lane 2 is on the left side, and the coordinate value is larger towards the right side. The coordinate value of the target instruction J55Y7802 is 78; then, the homogeneity directive 9 for intersection a in fig. 5 is smaller than the coordinate value of the target node 5, such as 63; the coordinate values of the homogeneity command 9 are smaller and smaller as they are transmitted downward, and the difference between the coordinate values 78 of the target command J55Y7802 is larger and larger. Thus, after instruction 9 has transmitted several nodes down, this rule is quickly discovered and the transmission of instruction 9 is discontinued. The transmission of the instruction 9 is stopped, so that the continuous generation of homogeneous instructions in wrong directions is avoided, and the electromagnetic space of the early warning system is kept clean.

Meanwhile, the coordinate value of the command 8 is larger and larger when the coordinate value is transmitted upwards, the difference between the coordinate value and the coordinate value 78 of the target command J55Y7802 is smaller and smaller; eventually, the instruction reaches the destination 5, as shown in FIG. 5; this is the expression of claim 7.

Example 8:

up to this point, instruction transmission of 3 types of target nodes in fig. 1 has been completed in 2 types; that is, the target node 4 has completed the instruction delivery in embodiment 4, and the target node 5 has also completed the instruction delivery in embodiment 7. Only the target node 6 has not completed delivery of the instruction. According to the embodiment 6 depicted in fig. 5, each tube lane 3, which is perpendicular to the baseline tube lane 1, is undergoing secondary transport. Naturally, these two-level transfers must also pass through many tube lane intersections, and a command-one-to-three occurs at each intersection, as shown in fig. 6; fig. 6 is identical to the principle of fig. 3, but for the use at a cross-point with a lower communication level. The homogeneity instructions 10 will traverse each warp lane 3 perpendicular to the baseline lane 1 where secondary transport occurs without restriction; whereas the homogeneity commands 11 and 12 must be limited by the numbering of the latitudinal tube lanes 3, the principle of which is in accordance with that of figure 4. In fig. 6, the first tube lane intersection R, through which the secondary command (8) is transmitted upward, is located at a latitudinal tube lane number 65, which is different from the tube lane number 66 contained in the target node geographical information W66Y6203, so that the

homogeneous commands

11 and 12 do not occur at R with three-level transmission. Only the secondary instruction reached intersection B, where the latitudinal tube lane number was 66, the

homogeneous instructions

11 and 12 were immediately implemented at B, the same as the tube lane number 66 contained in the target node geographic information W66Y 6203.

In fig. 5, although each warp lane 3 implements a secondary transmission and the secondary transmission traverses many intersections, only at B, the tertiary transmission is implemented for the intersections whose latitudinal tube lane numbers are the same as the tube lane numbers contained in the destination node geographical information W66Y 6203. The three-stage transmission does not occur at the intersection points with different numbers of other pipe galleries; again keeping the electromagnetic space of the early warning system clean. This is the expression of claim 8.

Example 9:

the implementation of claim 8, such that the instructions seek to the pipe lane where the target node is located; and the target node can be approached only by continuously using the coordinate value of the target pipe gallery, and finally the instruction is sent. The warp coordinate value approximation method of claim 7 is only repeatedly used, and only the approximation of the weft coordinate value is changed into the approximation of the weft coordinate value, so that one of three-

level transmission instructions

11 or 12 is continuously approximated to a target node, and finally, the instruction delivery is completed; and the other one, which is found to be the transmission direction away from the target node, terminates its transmission in time. From this point on, the most difficult target node 6 in fig. 1 is finally searched in fig. 7 after the first-level transmission, the second-level transmission and the third-level transmission. In these lengthy instruction transmissions of 3 levels, the present invention reasonably uses an exhaustive method to ensure comprehensive search of each transmission level without missing, and in time stops transmitting the instructions transmitted in the wrong direction to maintain a sufficiently clean electromagnetic space for the grid transmission system. Therefore, such measures are reliable. Indeed, the "exhaustive search and garbage removal" technical route of the present invention is an innovation of patent 202110498444.2, and the present invention continues to use this technical route and makes appropriate changes, essentially variations of patent 202110498444.2.

Example 10:

the schematic diagram of figure 1 is a simplification of a real pipe gallery system, which forms a much larger scale grid; thus, as a command enters baseline 1 from origin 0 and travels one stage to both sides, the command passes through many tube lane intersections. Every time a cross point is passed, it is possible to generate a two-level transmission as in fig. 3; a large number of secondary transfers across each tube lane intersection would also result in a large number of tertiary transfers as in fig. 6. Although the invention adopts the layer-by-layer measure to timely and immediately eliminate the homogeneous instruction transmitted in the wrong direction, a certain amount of homogeneous instructions still intensively flow to the vicinity of the target node. As can be seen in fig. 5, there is an intersection between each warp tube lane 3 and the weft 66 tube lane where the target node is located; when three level transfers occur at cross point B, the other cross point K, M, N will also have three level transfers that are identical to cross point B. These homogeneous commands are generated in different grids and are all commands with correct transmission direction, but once they are flooded to the same pipe gallery where the target node is located, homogeneous command collision can still be formed, and the hard command transmission result after 3 levels of transmission is destroyed on the successful edge! Fig. 8 shows the case where such instructions of the correct transmission direction, generated in different grids, flood the vicinity of the target node. Note that in fig. 8, homogeneous instructions crowd to the vicinity of the target node, although it appears that there is a little bit further from the target node 6 and a little bit closer; however, they arrive at the target node 6 almost simultaneously. The reason is that all commands are electronic signals in nature, and the transmission speed of the commands reaches 30 kilometres/second; the distance of the grid in fig. 8 does not form a time difference at all, and the homogeneous command in fig. 8 is easy to collide.

The present invention continues to utilize the method used in patent 202110498444.2: each node transmits only 1 time per instruction within a specified time. Since the homogeneous instructions in fig. 8 are actually the same instructions derived from the grid system at the origin 0, as long as any one of the homogeneous instruction transmissions reaches the target node, the remaining homogeneous instructions have no value. Therefore, a node pair transmits a command containing the same geographical information only 1 time in a predetermined short time (for example, 1 second). The implementation effectively maintains the electromagnetic space near the target node clean, and the last driving protection navigation is carried out for the instruction to reach the destination; this is the expression of claim 10.

Finally, the name of the invention is: a long-distance reverse signal transmission method of a grid-shaped pipe gallery early warning system is disclosed, wherein the reference direction of the 'reverse' is based on the electronic signal transmission direction of patent 202110200411.5 and patent 202110498444.2. The electronic signal transmission directions of patent 202110200411.5 and patent 202110498444.2 are both uploaded from the node to the server, and the server cannot give instructions to any node in the early warning system. The invention realizes that the electronic signal of the patent 202110498444.2 is given an instruction to a specified node. The invention is combined with patent 202110498444.2, so that the all-round communication of the complex grid-shaped early warning system is realized. The success of this universal communication represents a comprehensive surpassing of the traditional early warning system technology in the new generation early warning technology mode innovated in patent 202110200411.5! The innovative new generation early warning technology of patent 202110200411.5 has the greatest value that real technically realizable instant warning is realized and the early warning system is realized in a large scale with low delay; this is of milestone significance for the improvement of the technical performance of the early warning system. However, since only signals are uploaded to the server from the node in a single direction, and the instruction of the server cannot be issued to the node, the new generation of early warning technology innovative by the patent 202110200411.5 lacks the management capability of the server on the early warning system; for example, the server cannot periodically send a test instruction to each node of the early warning system, and cannot know the hardware device state of each node. The invention fills the last short board of patent 202110200411.5 and patent 202110498444.2, so that the new generation early warning technology innovated in patent 202110200411.5 not only comprehensively surpasses the traditional early warning technology in technical performance, but also has the same perfection as the traditional early warning system in the operation management of the early warning system.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A long-distance reverse signal transmission method of a latticed pipe gallery early warning system is characterized by comprising the following steps:

in the grid-shaped underground pipe gallery, establishing a coordinate system origin of the early warning system at the approximate physical center; the specific tube corridor where the coordinate origin is located is defined as a baseline tube corridor, and the baseline can be in the warp direction or the weft direction; the server gives an instruction to any node of the pipe gallery, and the instruction enters the pipe gallery system through the origin of coordinates.

2. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 1, wherein each node can transmit two types of signals; one is a signal uploaded to the server by the node, and the second is an operation instruction issued to a specified target node by the server; the uploaded signals and the issued commands have different formats, and the nodes can recognize the signals; after the node identifies the signal type, the relay operation with different transmission directions is executed.

3. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 1, wherein the command sent by the server to the early warning system contains geographic information of a destination to be reached.

4. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 1, wherein the command issued by the server is transmitted to both sides along the baseline pipe gallery after the coordinate origin is entered; the transmission on the baseline is not limited by any condition until each node on the baseline is traversed; the transmission of the command over the baseline is defined as a primary transmission.

5. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 4, wherein the command is transmitted at one stage on the baseline, and when passing through each pipe gallery crossing point, the command is split into three-direction homogeneous commands, wherein one command continues to be transmitted along the baseline; the other two instructions can be transmitted to the left direction and the right direction on the two sides of the base line respectively; two homogeneous instructions are transmitted in the left direction and the right direction on two sides of the base line, and are defined as two-stage transmission; the secondary transmission is conditionally restricted, whether or not to implement the transmission is determined by the direction of the target geographic information contained within the instruction.

6. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 5, wherein secondary transmission of the command is limited by the direction of the target geographic information contained in the command, and the secondary transmission can be performed if the direction of the target geographic information contained in the command is different from the directions of the left and right pipe galleries where the target geographic information is located; if the directions are the same, continuously checking whether the number of the pipe gallery of the target geographic information contained in the instruction is the same as the numbers of the pipe galleries on the left side and the right side, and if so, implementing secondary transmission; if the numbers are not the same, secondary transmission is rejected.

7. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 6, wherein when secondary transmission of the command is implemented because the direction of the target geographic information contained in the command is different from the direction of the left and right pipe galleries where the target geographic information is located, if the direction of the target geographic information contained in the command is the same as the direction of the left and right pipe galleries where the target geographic information is located and the number of the pipe galleries is the same, the relay node calculates the difference between the spatial coordinate of the geographic information of the relay node and the spatial coordinate of the target geographic information contained in the command; if the difference value of the relay transmission direction becomes smaller, the relay node implements the relay; and if the difference value of the relay transmission directions becomes larger, the relay node refuses the relay.

8. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 6, wherein when secondary transmission of the command is implemented because the direction of the target geographic information contained in the command is the same, but the pipe gallery number is the same as the pipe gallery number on the left side and the right side, when the command passes through the pipe gallery intersection point in the transmission process, the secondary transmission command is also split into homogeneous commands in three directions, wherein one command continues to be transmitted along the secondary transmission direction without limitation; until the end of the secondary transmission, the other two homogeneous instructions can be respectively transmitted to the left direction and the right direction at the two sides of the secondary transmission pipe gallery; the homogeneous instructions split from the secondary transmission are transmitted in the left direction and the right direction on two sides of the secondary transmission pipe gallery and are defined as three-level transmission; if the pipe gallery number of the target geographic information contained in the instruction is the same as the pipe gallery number of the intersection point, implementing three-level transmission; if not, rejecting three-stage transmission.

9. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to claim 8, wherein when three-level transmission of the command is implemented because the number of the target geographic information pipe gallery contained in the command is the same as the number of the pipe gallery at the left side and the right side, the relay node calculates the difference between the spatial coordinates of the geographic information of the relay node and the spatial coordinates of the target geographic information contained in the command; if the difference value of the relay transmission direction becomes smaller, the relay node implements the relay; and if the difference value of the relay transmission directions becomes larger, the relay node refuses the relay.

10. The long-distance reverse signal transmission method of the latticed pipe gallery early warning system according to any one of claims 1 to 9, wherein each node has the same command of the geographic information and only performs relay transmission once in a specified short time.