Node grouping and routing setting method of node detector abnormal condition monitoring network

Abstract

The invention is suitable for the technical field of geological exploration, and provides a node grouping and route setting method for a node detector abnormal condition monitoring network, which comprises the following operation steps: S1, finding a node jf farthest from a seismograph in A, finding all nodes with the distance smaller than L1 from jf in a set A to form a set B, and for each node j in the set B, carrying out node grouping and route setting on each node jf in the set A; solving the number of nodes, the distance between which and A is smaller than L1, in A, selecting a node jmax corresponding to max (Nj) as an aggregation node, and moving the node into an aggregation node set C from A; and S2, finding out all nodes, the distances between which and the seismograph are less than L2, from the aggregation node set C, and repeating the steps for the set C until the set C becomes an empty set, and ending the process. The method provided by the invention can effectively divide common nodes, aggregation nodes and routing nodes, and monitors the operation condition of a wireless node detector in real time, thereby improving the reliability of the wireless node detector. And the efficient operation of seismic exploration work is powerfully ensured.

Description

Technical Field

[0001] The present invention relates to the field of geological prospecting technology, and more specifically, to a node grouping and routing setting method for a node detector abnormal condition monitoring network. Background Art

[0002] In geological exploration, wireless node detectors can monitor node abnormal conditions through beacons, and when an abnormality occurs, the abnormal information is reported to the seismograph through the multi-hop self-organizing wireless network composed of nodes, so that the staff can handle it in time to ensure the quality and efficiency of seismic exploration.

[0003] In seismic exploration, nodes are densely arranged. For example, in a typical construction scenario, the distance between nodes is 3 meters, while the typical outdoor communication distance of a wireless ad hoc network module can reach more than 100 meters. In order to make the wireless ad hoc network containing a large number of nodes run stably and report abnormal situations to the seismograph in time, a three-layer network architecture can be adopted to divide all nodes into ordinary nodes, aggregation nodes and routing nodes. Each node sends a beacon to a specific node, and the receiving node determines whether the sending node is normal through the beacon. Once an abnormal situation occurs, it will be immediately forwarded to the seismograph through a pre-set route. Under the three-layer network architecture, this patent proposes a method for effectively dividing ordinary nodes, aggregation nodes and routing nodes, and setting abnormal forwarding routes, thereby ensuring the effective implementation of seismic exploration. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a method for node grouping and routing setting in a node detector abnormal condition monitoring network.

[0005] To achieve the above object, the present invention provides the following technical solutions: A node grouping and routing setting method for a node detector abnormal condition monitoring network, in order to monitor the status of all wireless node detectors (referred to as "nodes"), each node is configured with a communication module, and can effectively communicate with each other within a certain distance, all nodes are divided into ordinary nodes, aggregation nodes and routing nodes, ordinary nodes send beacons to specific aggregation nodes with a relatively small power P1, and its one-hop communication distance is L1, the aggregation node sends beacons to its bound routing node with a relatively large power P2, and its one-hop communication distance is L2, the routing node sends beacons to its bound next-hop routing node with a maximum power P3, and its one-hop communication distance is L3, including the following specific operation steps: S1, the generation of common nodes and aggregation nodes and their routing relationship binding; In the initial stage, let the set of all nodes except the seismograph be A, and let C and D be empty sets; S1-1, first find the node jf in A that is farthest from the seismograph; S1-2. Find all nodes in set A whose distance to jf is less than L1, and form set B (jf is also in B); S1-3. For each node j in B, find the number of nodes in A whose distance to it is less than L1, denoted as Nj; S1-4, select the node jmax corresponding to max(Nj) as the sink node, and move it from A to the sink node set C; for all nodes in A whose distance from jmax is less than L1, bind their sink nodes to jmax, and move them from A to the set D. At this time, A is still the set of all nodes without a sink node set; Repeat the above four steps for set A until all nodes in A have been moved into set D or sink node set C, A becomes an empty set, and the process ends. At this point, all nodes have been divided into sink nodes or ordinary nodes, and each ordinary node is bound to a specific sink node; S2, generation of routing nodes and binding of routing relationships; The routing node is responsible for receiving the beacon of the aggregation node and forwarding the abnormal information to the seismograph when an abnormality occurs. The one-hop communication distance of the aggregation node is L2, and the one-hop communication distance of the routing node is L3. <L3; Let the set of routing nodes be R, and initialize the sets R and F to be empty sets; S2-1. Find all nodes whose distance to the seismometer is less than L2 from the sink node set C, set their routes to directly reach the seismometer, then move them from C to F, and add the seismometer to the set R; S2-2, for set C, repeat the following steps until C becomes an empty set and the process ends; S2-2-1. Initialize Br and Bu to empty sets; S2-2-2. Find the node jr with the shortest distance to the seismograph from C, and then find all the nodes with a distance to jr less than L2 from C to form a set Br (Br includes jr); S2-2-3, traverse all nodes in Br. For node i, if the distance between a node in R and it is not greater than L3, then include the node i in the set Bu. If Bu is not empty, continue to execute S2-3; if Bu is empty, that is, the distance between all nodes in Br and any node in R is less than L3, jump to S2-4 for execution; S2-3, initialize Ci to an empty set, i=1...Nbu, Nbu is the number of elements in the set Bu; S2-3-1, traverse all nodes in Bu, for any node i in Bu, find the nodes in set C whose distance is less than L2 to form a set Ci, and select the node imax corresponding to Ci with the largest number of elements as the routing node r selected in the current step; S2-3-2, bind the routing nodes of all nodes in Cimax to r; S2-3-3. For node r, find the node rs with the shortest distance from it in the set R, whose distance from it is not greater than L3 and among all nodes in R whose distance from it is not greater than L3, and bind its routing node to rs. S2-3-4, move r into set R, and move all nodes in Cimax from set C into set F; S2-3-5, return to S2-2 to continue execution; S2-4, initialize the sets E and Cp to empty sets; S2-4-1. Find all nodes whose distance jr is less than L2 from set F, and let the set be E. If E is not empty, continue to execute S2-4-2. If E is empty, jump to S2-4-5 for execution. S2-4-2. Let the node rp with the smallest distance to jr in E be the routing node bound to jr, and move rp from set F to set R. The routing node originally bound to rp remains unchanged. S2-4-3. Find the nodes in set C whose distance to rp is less than L2 to form set Cp, bind the routing nodes of all nodes in Cp to rp, and move all nodes in Cp from set C to set F; S2-4-4, return to S2-2 to continue execution; S2-4-5. Set E is empty, indicating that there is a coverage hole in the network. The algorithm terminates and reminds the exploration technicians to add several node detectors at appropriate locations to ensure the connectivity of the wireless network.

[0006] The node detector includes a shell, a tail cone inserted into the soil layer is arranged on the lower side of the shell, a plurality of storage grooves arranged in a circular array are opened on the outer surface of the shell, auxiliary support plates matching the storage grooves are arranged in the storage grooves, a mounting shaft is arranged between the inner walls on both sides opposite to each other at the bottom of the storage groove, and the lower side of the auxiliary support plate is rotatably sleeved on the outer surface of the mounting shaft.

[0007] The present invention is further configured as follows: a trigger assembly for controlling the rotation of the auxiliary support plate is provided on the lower side of the shell, the trigger assembly includes a trigger ring, the trigger ring is provided on the lower side of the shell, and is movably sleeved on the outer surface of the tail cone, a plurality of trigger cavities arranged in a circular array are opened in the shell, a plurality of trigger rods are provided on the upper surface of the trigger ring, the upper end of the trigger rod slides through the trigger cavity, and a first spring movably sleeved on the outer surface of the trigger rod is provided on the trigger ring and the lower surface of the shell.

[0008] The present invention is further configured as follows: a side of the trigger cavity close to the storage groove is connected to the storage groove, a push plate with one end extending into the trigger cavity is provided on the side of the bottom of the auxiliary support plate close to the trigger cavity, and a trigger rotating plate is hinged between one end of the push plate located in the trigger cavity and the upper end of the trigger rod.

[0009] The present invention is further configured as follows: a sealing rubber pad is provided on one side of the push plate away from the auxiliary support plate, and the push plate can be rotated to a vertical state to seal the connection between the trigger chamber and the storage groove.

[0010] The present invention is further configured as follows: the interior of the auxiliary support plate is hollow, a mounting plate is arranged inside the horizontal plate of the auxiliary support plate, a control rod is slidably sleeved on the mounting plate, a pulling plate is sleeved on the outer surface of the control rod, a second spring movably sleeved on the outer surface of the control rod is arranged between the pulling plate and the mounting plate, a plurality of insertion rods are arranged in the horizontal plate of the auxiliary support plate, the insertion rods are arranged on the side of the control rod facing away from the shell, a pushing rotating plate is hinged between the insertion rod and the control rod, and the other end of the insertion rod slides through the outer surface of the auxiliary support plate.

[0011] The present invention is further configured as follows: a pulling rope is provided on the outer surface of the installation shaft located inside the auxiliary support plate, the other end of the pulling rope is connected to the control rod, a rotating shaft is rotatably connected on the inner wall at the angle of the auxiliary support plate, a directional wheel is sleeved on the outer surface of the rotating shaft, and the pulling rope is laid on the outer surface of the directional wheel.

[0012] The present invention is further configured as follows: a limiting plate is provided between the mounting plate and the inner wall of the vertical plate of the auxiliary support plate, and the insertion rod is movably sleeved on the limiting plate.

[0013] The advantages of the present invention are: First, the method of the present invention can effectively divide ordinary nodes, aggregation nodes and routing nodes, and monitor the operating status of wireless node detectors in real time, which effectively guarantees the efficient implementation of seismic exploration work. At the same time, in the process of processing data collected by wireless detectors, while ensuring the collection quality, the amount of data that needs to be transmitted through the wireless self-organizing network is compressed as much as possible, so that the seismograph operator can promptly determine whether supplementary measurement is needed, thereby greatly improving the quality of exploration data collection.

[0014] Secondly, the node detector in the present invention achieves the purpose of auxiliary support for the node detector by setting a rotatable auxiliary support plate, which tries to avoid the problem of tilting of the node detector after being inserted into the soil layer, affecting the coupling degree between the tail cone and the soil layer, reducing the effect of seismic wave detection, and further ensuring the use effect of the node detector.

[0015] Third, the node detector in the present invention can automatically control multiple auxiliary support plates to unfold and contact with the surface of the soil layer when the node detector is inserted into the soil layer by setting auxiliary components. No manual operation is required, which reduces the installation steps of the node detector and ensures the installation efficiency and speed of the node detector.

[0016] Fourthly, the node detector in the present invention is provided with an insertion rod, which can be inserted into the soil layer when the auxiliary support plate is rotated to contact the surface of the soil layer, thereby ensuring the friction between the auxiliary support plate and the surface of the soil layer, thereby further increasing the supporting effect of the auxiliary support plate on the node detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An example diagram of the wireless node detector layout, network node division and routing setting of the present invention; Figure 2 It is a structural schematic diagram of a node detector of the present invention; Figure 3 It is a front plan view of the auxiliary support plate of the present invention being closed; Figure 4 This is a front plan view of the auxiliary support plate of the present invention when it is unfolded; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0018] In the figure: 1, housing; 2, tail cone; 3, auxiliary support plate; 31, mounting plate; 32, control rod; 33, pulling plate; 34, second spring; 35, plug rod; 36, push rotating plate; 37, limiting plate; 38, pulling rope; 39, rotating shaft; 310, directional wheel; 4. Storage slot; 5. Installation shaft; 6. Trigger assembly; 61. Trigger ring; 62. Trigger rod; 63. First spring; 64. Trigger chamber; 65. Push plate; 66. Trigger rotating plate; 67. Sealing rubber pad. DETAILED DESCRIPTION

[0019] See also Figure 1 , the present invention provides the following technical solutions: Specifically, it refers to a node grouping and routing setting method for a node detector abnormal condition monitoring network. The scenario setting of the present invention is as follows: In seismic exploration, in order to monitor the status of all wireless node detectors (hereinafter referred to as "nodes"), each node is equipped with a communication module so that they can communicate effectively with each other within a certain distance. In order to effectively manage the nodes, the network adopts a three-layer architecture, and all nodes are divided into ordinary nodes, aggregation nodes and routing nodes. During network operation, ordinary nodes send beacons to specific aggregation nodes with a relatively small power P1, and their one-hop communication distance is L1. The aggregation node receives the beacons sent by the ordinary nodes and determines whether the ordinary nodes are normal through the beacons; the aggregation node sends beacons to the bound routing nodes with a relatively large power P2, and their one-hop communication distance is L2. The routing node determines whether the aggregation node is normal through the beacons; the routing node sends beacons to the next-hop routing node bound to it with the maximum power P3, and its one-hop communication distance is L3. The next-hop routing node determines whether the routing node is normal through the beacon. Once the node determines that an abnormal situation has occurred, it immediately reports the abnormal information to the seismograph through the pre-bound route.

[0020] Based on the above scenario, the specific steps are as follows: S1, the generation of common nodes and aggregation nodes and their routing relationship binding; In the initial stage, let the set of all nodes except the seismograph be A, and let C and D be empty sets; S1-1, first find the node jf in A that is farthest from the seismograph (the distance here is the physical distance, which can be easily calculated by the node position and the seismograph position); S1-2. Find all nodes in set A whose distance to jf is less than L1, and form set B (jf is also in B); S1-3. For each node j in B, find the number of nodes in A whose distance to it is less than L1, denoted as Nj; S1-4, select the node jmax corresponding to max(Nj) as the sink node, and move it from A to the sink node set C; for all nodes in A whose distance from jmax is less than L1, bind their sink nodes to jmax, and move them from A to the set D. At this time, A is still the set of all nodes without a sink node set; Repeat the above four steps for set A until all nodes in A have been moved into set D or sink node set C, A becomes an empty set, and the process ends. At this point, all nodes have been divided into sink nodes or ordinary nodes, and each ordinary node is bound to a specific sink node; S2, generation of routing nodes and binding of routing relationships; The routing node is responsible for receiving the beacons of the aggregation node and forwarding the exception information to the seismograph when an exception occurs. The one-hop communication distance of the aggregation node is L2, and the one-hop communication distance of the routing node is L3, and L2 < L3. The routing node has two functions: routing and forwarding; receiving the beacon information of the aggregation node. In the present invention, some nodes are selected from the aggregation nodes as routing nodes. The routing node should ensure two points: 1) The set of routing nodes covers all aggregation nodes; 2) The path to the destination node, the seismograph, is unobstructed. The method for selecting the routing node is as follows; Let the set of routing nodes be R, and initialize the sets R and F as empty sets; S2-1. Find all the nodes in the aggregation node set C whose distance from the seismograph is less than L2, set their routing to directly reach the seismograph, then move them from C to F, and add the seismograph to the set R; S2-2. For the set C, repeat the following steps until C becomes an empty set and the process ends; S2-2-1. Initialize Br and Bu as empty sets; S2-2-2. Find the node jr with the minimum distance from the seismograph in C, and then find all the nodes in C whose distance from jr is less than L2 to form the set Br (Br includes jr); S2-2-3. Traverse all the nodes in Br. For the node i, if the distance between a certain node in R and it is not greater than L3, then include the node i in the set Bu. If Bu is not empty, continue to execute S2-3; if Bu is empty, that is, the distance between all the nodes in Br and any node in R is less than L3, jump to S2-4 to execute; S2-3. Initialize Ci as an empty set, i = 1... Nbu, where Nbu is the number of elements in the set Bu; S2-3-1. Traverse all the nodes in Bu. For any node i in Bu, find the nodes in the set C whose distance from it is less than L2 to form the set Ci, and select the node imax corresponding to the Ci with the largest number of elements as the routing node r selected in the current step; S2-3-2. Bind the routing nodes of all the nodes in Cimax to r; S2-3-3. For the node r, find the node rs in the set R whose distance from it is not greater than L3 and whose distance is the minimum among all the nodes in R whose distance from it is not greater than L3, and bind its routing node to rs; S2-3-4. Move r to the set R, and move all the nodes in Cimax from the set C to the set F; S2-3-5. Return to S2-2 and continue to execute; S2-4. Initialize the sets E and Cp as empty sets; S2-4-1. Find all nodes whose distance jr is less than L2 from set F, and let the set be E. If E is not empty, continue to execute S2-4-2. If E is empty, jump to S2-4-5 for execution. S2-4-2. Let the node rp with the smallest distance to jr in E be the routing node bound to jr, and move rp from set F to set R. The routing node originally bound to rp remains unchanged. S2-4-3. Find the nodes in set C whose distance to rp is less than L2 to form set Cp, bind the routing nodes of all nodes in Cp to rp, and move all nodes in Cp from set C to set F; S2-4-4, return to S2-2 to continue execution; S2-4-5, set E is empty, indicating that there is a coverage hole in the network here, the algorithm terminates, and reminds the exploration technicians to add several node detectors at appropriate locations to ensure the connectivity of the wireless network; In seismic exploration, the wireless node detector is used according to the instructions attached to the figure Figure 1 Topology, the distance between nodes is 3 meters, and they are arranged around the seismometer according to the grid point structure. The wireless node detector is equipped with a communication module. The nodes form a wireless self-organizing network, which can report node abnormal information to the seismometer. In order to facilitate the explanation of the algorithm execution process, Figure 1 Each node in the network is numbered. The first digit represents the group number, and the second and third digits represent the row and column numbers in the group. For example, the number (2, 1, 3) represents the node in the first row and third column of the second group. Set L1 to 4.5 meters, L2 to 10 meters, and L3 to 15 meters.

[0021] In the division of common nodes and aggregation nodes, we start with node (1, 1, 1), and divide the 9 nodes in the upper left square of the diagram into an aggregation group, with the central node as the aggregation node bound to the common nodes of the group; then process the other nodes in turn according to the method in step S1 above, and the node division result is as shown in the attached manual. Figure 1 As shown in the attached Figure 1 In the figure, the nodes in the dotted box are divided into the same aggregation group, and the aggregation node of the group is the central node and can be marked in red or blue.

[0022] In the selection of routing nodes, firstly, the sink nodes (5, 5, 2), (5, 5, 5), (3, 5, 2), (4, 5, 2) whose distance to the seismograph is less than L2 are selected as routing nodes, and the node (2, 5, 2) is selected as the routing node in the second group; since the distance between the sink nodes in the first group and these nodes is greater than L2, the node (5, 1, 4) is selected as the routing node so that the nodes in the first group can be connected to the seismograph; then (1, 5, 5) in the first group is selected as the routing node, so that all ordinary nodes can send beacons to the sink nodes to which they are bound, and all sink nodes can be connected to the routing nodes to which they are bound, so that when abnormal information is generated, it can be reported to the seismograph in a timely and reliable manner.

[0023] See also Figure 2-6 The present invention designs a node detector which can avoid tilting after installation according to the above scheme, including a shell 1, a tail cone 2 inserted into the soil layer is arranged on the lower side of the shell 1, a plurality of storage grooves 4 arranged in a circular array are opened on the outer surface of the shell 1, and an auxiliary support plate 3 matching with the storage groove 4 is arranged in the storage groove 4, and a mounting shaft 5 is arranged between the inner walls on both sides opposite to each other at the bottom of the storage groove 4, and the lower side of the auxiliary support plate 3 is rotatably sleeved on the outer surface of the mounting shaft 5, so when the tail cone 2 is inserted into the soil layer, the plurality of auxiliary support plates 3 are controlled to rotate outward with the mounting shaft 5 as the rotation point, and finally the outer surface of the auxiliary support plate 3 is in contact with the surface of the soil layer, so as to achieve the purpose of auxiliary support for the node detector, and avoid the problem of tilting of the node detector after being inserted into the soil layer as much as possible, which affects the coupling degree between the tail cone 2 and the soil layer, reduces the effect of seismic wave detection, and further ensures the use effect of the node detector.

[0024] A trigger assembly 6 for controlling the rotation of the auxiliary support plate 3 is provided on the lower side of the shell 1. The trigger assembly 6 includes a trigger ring 61. The trigger ring 61 is arranged on the lower side of the shell 1 and is movably mounted on the outer surface of the tail cone 2. A plurality of trigger cavities 64 arranged in a circular array are provided in the shell 1. The number of the trigger cavities 64 is the same as the number of the storage slots 4 and is arranged on a side close to the storage slots 4. A plurality of trigger rods 62 are provided on the upper surface of the trigger ring 61. The upper ends of the trigger rods 62 slide through the trigger cavities 64. A first spring 63 movably mounted on the outer surface of the trigger rod 62 is provided on the trigger ring 61 and the lower surface of the shell 1. Therefore, when the first spring 63 is not squeezed, the first spring 63 will form a thrust on the trigger ring 61, so that the initial position of the trigger ring 61 is away from the side of the shell 1. The side of the trigger cavity 64 close to the storage slot 4 is connected to the storage slot 4. A side of the bottom of the auxiliary support plate 3 close to the trigger cavity 64 is provided with an end extending The push plate 65 extends into the trigger cavity 64, and a trigger rotating plate 66 is hinged between one end of the push plate 65 located in the trigger cavity 64 and the upper end of the trigger rod 62. In this way, when the tail cone 2 is inserted into the soil layer, the trigger ring 61 will contact the surface of the soil layer. In this way, when the shell 1 continues to move downward, the distance between the trigger ring 61 and the shell 1 gradually becomes smaller, so that the trigger rod 62 moves upward in the trigger cavity 64. At this time, the trigger rotating plate 66 will form a thrust on the push plate 65, so that the auxiliary support plate 3 rotates outward with the installation axis 5 as the rotation point. When the node detector is inserted, the push plate 65 rotates to a vertical state, and the outer surface of the auxiliary support plate 3 contacts the surface of the soil layer. Through the above structure, when the node detector is inserted into the soil layer, multiple auxiliary support plates 3 can be automatically controlled to unfold and contact the surface of the soil layer. No manual operation is required, which reduces the installation steps of the node detector and ensures the installation efficiency and speed of the node detector.

[0025] In the present invention, in order to prevent the rebound of the first spring 63 from affecting the installation stability of the node detector, a weight block can be added to the housing 1, so as to avoid the problem that the first spring 63 rebounds and pushes the node detector out of the soil layer.

[0026] A sealing rubber pad 67 is provided on the side of the push plate 65 away from the auxiliary support plate 3, so when the push plate 65 is rotated to a vertical state, the connection between the trigger cavity 64 and the storage groove 4 can be sealed, thereby preventing external soil from entering the trigger cavity 64 after the auxiliary support plate 3 is unfolded, thereby affecting the stability of the trigger assembly 6.

[0027] Since the bottom of the shell 1 of the existing node detector is in the shape of a truncated cone, the outer surface of the auxiliary support plate 3 needs to fit with the outer surface of the shell 1. Therefore, the auxiliary support plate 3 is bent. In this way, after the auxiliary support plate 3 is rotated to the storage groove 4, the outer surface of the auxiliary support plate 3 is flush with the outer surface of the shell 1, thereby ensuring the surface aesthetics of the shell 1 of the node detector.

[0028] The interior of the auxiliary support plate 3 is hollow, and a mounting plate 31 is arranged in the transverse plate of the auxiliary support plate 3. A control rod 32 is slidably sleeved on the mounting plate 31, and a pulling plate 33 is sleeved on the outer surface of the control rod 32. A second spring 34 movably sleeved on the outer surface of the control rod 32 is arranged between the pulling plate 33 and the mounting plate 31. When the second spring 34 is not squeezed, the second spring 34 will form a thrust on the pulling plate 33, so that the initial position of the pulling plate 33 is away from the mounting plate 31. A plurality of insertion rods 35 are arranged in the transverse plate of the auxiliary support plate 3. The insertion rod 35 is arranged on the side of the control rod 32 facing away from the shell 1. A pushing rotating plate 36 is hinged between the insertion rod 35 and the control rod 32. The other end of the insertion rod 35 slides through the outer surface of the auxiliary support plate 3. A pulling rope 38 is arranged on the outer surface of the mounting shaft 5 located in the auxiliary support plate 3. The other end of the pulling rope 38 is connected to the control rod 32. The auxiliary support plate 3 is movably connected with a rotating shaft 39, and a directional wheel 310 is sleeved on the outer surface of the rotating shaft 39. The pulling rope 38 is laid on the outer surface of the directional wheel 310. When the auxiliary support plate 3 is pushed to rotate outward by the trigger component 6, since the mounting shaft 5 remains stationary, the pulling rope 38 is wound around the outer surface of the mounting shaft 5 during the rotation of the auxiliary support plate 3, so that the pulling rope 38 will form a pulling force on the control rod 32, so that the control rod 32 is displaced toward the side of the inclined plate close to the auxiliary support plate 3. At the same time, the pulling plate 33 will form a thrust on the second spring 34, so that the second spring 34 is stressed and contracts. At this time, pushing the rotating plate 36 will form a thrust on the insertion rod 35, so that the insertion rod 35 gradually moves out of the auxiliary support plate 3. Therefore, when the auxiliary support plate 3 rotates to contact with the soil surface, the insertion rod 35 can be inserted into the soil, thereby ensuring the friction between the auxiliary support plate 3 and the soil surface, thereby further increasing the supporting effect of the auxiliary support plate 3 on the node detector.

[0029] A limiting plate 37 is provided between the mounting plate 31 and the inner wall of the vertical plate of the auxiliary support plate 3, and the insertion rod 35 is movably mounted on the limiting plate 37, so that the limiting plate 37 will have a limiting effect on the insertion rod 35, thereby avoiding the problem of the insertion rod 35 being tilted when it is retracted into the auxiliary support plate 3.

[0030] The working principle of the node detector provided by the present invention is as follows: when the tail cone 2 is inserted into the soil layer, the trigger ring 61 will contact the surface of the soil layer, so that when the shell 1 continues to move downward, the distance between the trigger ring 61 and the shell 1 gradually becomes smaller, so that the trigger rod 62 moves upward in the trigger cavity 64, and then the trigger rotating plate 66 will form a thrust on the push plate 65, so that the auxiliary support plate 3 rotates outward with the installation axis 5 as the rotation point. When the node detector is inserted, the push plate 65 rotates to a vertical state, and the outer surface of the auxiliary support plate 3 contacts the surface of the soil layer; When the auxiliary support plate 3 rotates outward, since the mounting shaft 5 remains stationary, the pulling rope 38 is wound around the outer surface of the mounting shaft 5 when the auxiliary support plate 3 rotates, so that the pulling rope 38 will form a pulling force on the control rod 32, causing the control rod 32 to move toward the side of the inclined plate close to the auxiliary support plate 3. At the same time, the pulling plate 33 will form a thrust on the second spring 34, causing the second spring 34 to be stressed and contracted. At this time, the pushing plate 36 will form a thrust on the insertion rod 35, causing the insertion rod 35 to gradually move out of the auxiliary support plate 3. Therefore, when the auxiliary support plate 3 rotates to contact the surface of the soil layer, the insertion rod 35 can be inserted into the soil layer.

Claims

1. A method for node grouping and routing setting of a node detector abnormal condition monitoring network, characterized in that: In order to monitor the status of all wireless node detectors (referred to as "nodes"), each node is equipped with a communication module, and can effectively communicate with each other within a certain distance. All nodes are divided into common nodes, aggregation nodes and routing nodes. Common nodes send beacons to specific aggregation nodes with a relatively small power P1, and their one-hop communication distance is L1. Aggregation nodes send beacons to their bound routing nodes with a relatively large power P2, and their one-hop communication distance is L2. Routing nodes send beacons to their bound next-hop routing nodes with a maximum power P3, and their one-hop communication distance is L3. The specific steps are as follows: S1, the generation of common nodes and aggregation nodes and their routing relationship binding; In the initial stage, let the set of all nodes except the seismograph be A, and let C and D be empty sets; S1-1, first find the node jf in A that is farthest from the seismograph; S1-2. Find all nodes in set A whose distance to jf is less than L1, and form set B (jf is also in B); S1-3. For each node j in B, find the number of nodes in A whose distance to it is less than L1, denoted as Nj; S1-4, select the node jmax corresponding to max(Nj) as the sink node, and move it from A to the sink node set C; for all nodes in A whose distance to jmax is less than L1, bind their sink nodes to jmax, and move them from A to the set D. At this time, A is still the set of all nodes that have not set a sink node; Repeat the above four steps for set A until all nodes in A have been moved into set D or sink node set C, A becomes an empty set, and the process ends. At this point, all nodes have been divided into sink nodes or ordinary nodes, and each ordinary node is bound to a specific sink node; S2, generation of routing nodes and binding of routing relationships; The routing node is responsible for receiving the beacon of the aggregation node and forwarding the abnormal information to the seismograph when an abnormality occurs. The one-hop communication distance of the aggregation node is L2, and the one-hop communication distance of the routing node is L3. <L3; Let the set of routing nodes be R, and initialize the sets R and F to be empty sets; S2-1. Find all nodes whose distance to the seismometer is less than L2 from the sink node set C, set their routes to directly reach the seismometer, then move them from C to F, and add the seismometer to the set R; S2-2, for set C, repeat the following steps until C becomes an empty set and the process ends; S2-2-1. Initialize Br and Bu to empty sets; S2-2-2. Find the node jr with the shortest distance to the seismograph from C, and then find all the nodes with a distance to jr less than L2 from C to form a set Br (Br includes jr); S2-2-3, traverse all nodes in Br. For node i, if the distance between a node in R and it is not greater than L3, then include the node i in the set Bu. If Bu is not empty, continue to execute S2-3; if Bu is empty, that is, the distance between all nodes in Br and any node in R is less than L3, jump to S2-4 for execution; S2-3, initialize Ci to an empty set, i=1...Nbu, Nbu is the number of elements in the set Bu; S2-3-1, traverse all nodes in Bu, for any node i in Bu, find the nodes in set C whose distance is less than L2 to form a set Ci, and select the node imax corresponding to Ci with the largest number of elements as the routing node r selected in the current step; S2-3-2, bind the routing nodes of all nodes in Cimax to r; S2-3-3. For node r, find the node rs with the shortest distance from it in the set R, whose distance from it is not greater than L3 and among all nodes in R whose distance from it is not greater than L3, and bind its routing node to rs. S2-3-4, move r into set R, and move all nodes in Cimax from set C into set F; S2-3-5, return to S2-2 to continue execution; S2-4, initialize the sets E and Cp to empty sets; S2-4-1. Find all nodes whose distance jr is less than L2 from set F, and let the set be E. If E is not empty, continue to execute S2-4-2. If E is empty, jump to S2-4-5 for execution. S2-4-2. Let the node rp with the smallest distance to jr in E be the routing node bound to jr, and move rp from set F to set R. The routing node originally bound to rp remains unchanged. S2-4-3. Find the nodes in set C whose distance to rp is less than L2 to form set Cp, bind the routing nodes of all nodes in Cp to rp, and move all nodes in Cp from set C to set F; S2-4-4, return to S2-2 to continue execution; S2-4-5. Set E is empty, indicating that there is a coverage hole in the network. The algorithm terminates and reminds the exploration technicians to add several node detectors at appropriate locations to ensure the connectivity of the wireless network.

2. A node detector, based on a node detector abnormal condition monitoring network node grouping and routing setting method according to claim 1, comprising a housing (1), characterized in that: The lower side of the shell (1) is provided with a tail cone (2) inserted into the soil layer, the outer surface of the shell (1) is provided with a plurality of receiving grooves (4) arranged in a circular array, the receiving grooves (4) are provided with auxiliary support plates (3) matching therewith, a mounting shaft (5) is provided between two opposite inner walls at the bottom of the receiving groove (4), and the lower side of the auxiliary support plate (3) is rotatably sleeved on the outer surface of the mounting shaft (5).

3. The node detector according to claim 2, characterized in that: A trigger assembly (6) for controlling the rotation of the auxiliary support plate (3) is arranged on the lower side of the housing (1), the trigger assembly (6) comprising a trigger ring (61), the trigger ring (61) being arranged on the lower side of the housing (1) and being movably sleeved on the outer surface of the tail cone (2), a plurality of trigger cavities (64) arranged in a circular array are provided in the housing (1), a plurality of trigger rods (62) are arranged on the upper surface of the trigger ring (61), the upper ends of the trigger rods (62) slidingly penetrate into the trigger cavities (64), and a first spring (63) movably sleeved on the outer surface of the trigger rods (62) is arranged between the trigger ring (61) and the lower surface of the housing (1).

4. The node detector according to claim 3, characterized in that: The trigger cavity (64) is communicated with the receiving groove (4) on one side thereof close to the receiving groove (4); a push plate (65) having one end extending into the trigger cavity (64) is provided on the bottom side of the auxiliary support plate (3) close to the trigger cavity (64); a trigger rotating plate (66) is hingedly connected between one end of the push plate (65) located in the trigger cavity (64) and the upper end of the trigger rod (62).

5. The node detector according to claim 4, characterized in that: A sealing rubber pad (67) is provided on one side of the push plate (65) away from the auxiliary support plate (3); the push plate (65) can be rotated to a vertical position to seal the connection between the trigger chamber (64) and the storage groove (4).

6. The node detector according to claim 2 or 5, characterized in that: The interior of the auxiliary support plate (3) is hollow, a mounting plate (31) is arranged inside the transverse plate of the auxiliary support plate (3), a control rod (32) is slidably sleeved on the mounting plate (31), a pulling plate (33) is sleeved on the outer surface of the control rod (32), a second spring (34) movably sleeved on the outer surface of the control rod (32) is arranged between the pulling plate (33) and the mounting plate (31), a plurality of insertion rods (35) are arranged inside the transverse plate of the auxiliary support plate (3), the insertion rods (35) are arranged on a side of the control rod (32) facing away from the housing (1), a pushing rotating plate (36) is hinged between the insertion rod (35) and the control rod (32), and the other end of the insertion rod (35) slides through the outer surface of the auxiliary support plate (3).

7. The node detector according to claim 6, characterized in that: A pulling rope (38) is provided on the outer surface of the installation shaft (5) located inside the auxiliary support plate (3), the other end of the pulling rope (38) is connected to the control rod (32), a rotating shaft (39) is rotatably connected to the inner wall at the angle of the auxiliary support plate (3), a directional wheel (310) is sleeved on the outer surface of the directional wheel (310), and the pulling rope (38) is laid on the outer surface of the directional wheel (310).

8. The node detector according to claim 7, characterized in that: A limiting plate (37) is provided between the mounting plate (31) and the inner wall of the vertical plate of the auxiliary support plate (3), and the insertion rod (35) is movably sleeved on the limiting plate (37).

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