303 results about "Wireless ad hoc network" patented technology

The invention discloses a communication method and system based on a wireless ad hoc network technology, and belongs to the technical field of wireless communication, and the method comprises the steps: obtaining the multi-dimensional state information of a local node, and generating a node state beacon for broadcasting; receiving a node state beacon from a neighbor node; calculating a stability index of a link connected to the neighbor node; calculating the transmission energy efficiency cost of the link; a total path security performance score is calculated for each candidate path in the network. According to the method, the multi-dimensional state information is introduced, the decision basis is more comprehensive, the relative motion trend of the nodes can be evaluated by calculating the motion velocity vector, so that the stability of the link is pre-judged instead of passively responding after the link is interrupted, and the problem of frequent change of the network topology is effectively solved.

The invention discloses a multi-communication link management platform and method for a wireless ad hoc network, and relates to the technical field of wireless communication, and the platform comprises a situation awareness module which is used for collecting data and generating situation data in combination with a three-dimensional digital map; the link occlusion risk prediction module is used for generating a predictive occlusion index based on the situation data; the multi-link comprehensive efficiency evaluation module is used for receiving the predictive shielding index and calculating and outputting a link comprehensive efficiency score in combination with the operation cost data; and the predictive switching decision and execution module is used for responding to the switching condition and switching the service data flow from the currently activated link to the inactivated link with the highest link comprehensive performance score. According to the method, communication interruption is avoided by actively predicting switching, expensive links are used as required, a multi-target model is adopted, the cost is reduced, and the method can flexibly adapt to service requirements.

The invention relates to an edge weak network-oriented wireless ad hoc network link quality discovery method, which comprises the following steps of: acquiring signal intensity of neighbor nodes through a sliding window, calculating fluctuation amplitude of the signal intensity, and judging a link stable state based on a preset threshold value; dynamically adjusting the duration of the HELLOINTERVAL timer according to the stable state of the link, and broadcasting the Hello request message at the frequency corresponding to the adjusted duration of the timer; after the neighbor node receives the Hello request, multi-dimensional service quality information is calculated, and the multi-dimensional service quality information subjected to differential coding compression is returned to the request node through a Hello response message; and after the request node receives the Hello response message, extracting and updating the link quality data in the local neighbor information table, and dynamically updating the link quality data based on the received Hello response message. The resource waste in the edge weak network is effectively reduced, the network efficiency is improved, the link quality information is ensured to be accurate and reliable, and the network robustness is enhanced.

The invention discloses a wireless ad hoc network routing and resource cross-layer joint optimization method based on a genetic algorithm. The method comprises the following steps: step 1, aiming at a plurality of end-to-end communication services in a wireless ad hoc network, carrying out mathematical modeling on a normalized difference sum of each service flow path hop count and a theoretical minimum value thereof and a constraint condition; performing joint optimization on link layer resource allocation and network layer routing decision; and step 2, solving the mathematical model based on a genetic algorithm to realize the targets of reasonable distribution of network resources and optimization of service quality. According to the method, link layer resource allocation and network layer routing decision are jointly optimized in a global mode under the condition that network communication resources are limited, it is ensured that a service flow is close to shortest path transmission as far as possible, end-to-end delay and network loads are reduced, and effective allocation of resources and flexible construction of routing are achieved.

The invention relates to the technical field of ad hoc network transmission management, and discloses a wireless ad hoc network transmission management method for earthquake early warning information, which comprises the following steps: S101, generating a comprehensive failure risk prediction value through a multi-source data fusion algorithm according to earthquake wave data, geologic structure data, historical earthquake data and meteorological data; s102, constructing a hierarchical failure probability model based on the comprehensive failure risk prediction value, and generating a node failure risk probability graph; the weight of each layer is distributed according to the earthquake stage; s103, constructing a network topology, calculating the survival time of network nodes, calculating the weighted comprehensive failure probability of each network node, and dynamically updating the network topology; and S104, according to the weighted comprehensive failure probability and the survival time of each network node, fusing to obtain a node stable utilization characteristic, and further executing staged resource scheduling. According to the invention, accurate prediction and staged resource scheduling of the network node failure risk in the whole earthquake disaster process are realized.

The invention provides a multi-modal fire-fighting robot cluster cooperation method and system, a medium and a product, and relates to the technical field of fire-fighting robots, and the method comprises the steps: obtaining own multi-modal sensing data collected by a fire-fighting robot cluster in real time, and generating a corresponding local environment model for each robot in the cluster; the working state of the current master control fire-fighting robot is monitored, if abnormity is found, the master control performance of a non-master control robot cluster (except the current master control robot) is analyzed according to the local environment models, and a new master control fire-fighting robot is determined; acquiring associated multi-mode sensing data collected by a new master controller from the local environment model of the slave robot cluster through a wireless ad hoc network, and generating a new global collaborative operation strategy according to the associated multi-mode sensing data; and distributing the new global collaborative operation strategy to each robot of the non-master-control robot cluster, and controlling the robots to carry out fire-fighting operation according to the strategy. The technical problem that a fire-fighting robot cluster is difficult to collaboratively carry out fire-fighting operation under the condition that a master control node fails in the prior art is solved.

The invention relates to the technical field of mobile wireless network communication, and provides a multi-hop wireless ad hoc network and a centerless distributed frequency selection networking transmission method thereof. The method comprises the steps of networking control based on a service frequency hopping channel, spectrum sensing and spectrum evaluation, frequency selection negotiation based on neighbor nodes, time-frequency resource scheduling based on frequency selection, and frequency selection optimization based on data transmission. On the basis of TDMA channel access design, a networking control mechanism based on a service frequency hopping channel is designed, and nodes dynamically select available frequency channels for network service transmission in a distributed mode. Available frequency spectrum information is obtained through autonomous frequency spectrum sensing and frequency spectrum evaluation of nodes, frequency selection negotiation is performed between adjacent network nodes, and dynamic scheduling use of time-frequency two-dimensional resources is performed in combination with a frequency selection result, so that data transmission of network centerless distributed self-adaptive frequency selection is realized; and the reliable networking and communication capabilities of the network in a complex electromagnetic interference environment are enhanced.

The invention discloses a communication method and system of a wireless ad hoc network, and relates to the technical field of wireless ad hoc networks. The method is applied to a data link layer of the wireless ad hoc network, the wireless ad hoc network comprises a plurality of nodes, each node communicates according to a time frame period, each node comprises an interception mode and a sending mode, and the method comprises the following steps: in the current time frame period, each node executes the following steps: receiving data in the interception mode, and sending the received data in the sending mode; updating a node neighbor table based on the received data; judging whether data sending time is up or not according to the information of each neighbor node in the node neighbor table; and switching to the sending mode to send the data under the condition of determining that the data sending time is up, and switching to the interception mode after the data is successfully sent. The whole wireless ad hoc network does not need complex interactive protocols such as time slot distribution, time slot recovery and the like, so that the decentralized wireless ad hoc network in a real sense is realized.

The invention discloses a tunnel PLC device wireless ad hoc network construction method supporting APP linkage, and belongs to the field of tunnel communication, and the method comprises the following steps: S1, constructing a signal comprehensive attenuation model based on tunnel geometric parameters, and obtaining a three-dimensional mixed channel matrix; s2, hierarchically expressing multi-dimensional data of tunnel physical topology, communication state and equipment operation by using a digital twin model to obtain a virtual model; s3, designing a double-link switching module supporting switching of PLC communication and wifi communication; and S4, designing multi-protocol conversion and management authority of APP cooperative control. By adopting the tunnel PLC equipment wireless ad hoc network construction method supporting APP linkage, the communication reliability, real-time performance and anti-interference problems of the PLC equipment ad hoc network in a complex tunnel environment are solved by fusing technologies such as laser scanning modeling, digital twinning, reinforcement learning and multi-protocol conversion, and the whole process optimization from environment perception to intelligent maintenance is realized.

The invention relates to the technical field of agricultural intellectualization, and discloses a fruit tree growth monitoring system based on multi-sensor fusion, which comprises a multi-mode sensor array, an integrated soil humidity sensor, a three-dimensional ultrasonic ranging sensor, a hyperspectral imaging sensor and a microenvironment meteorological station, and realizes multi-parameter synchronous acquisition; a nonlinear data calibration model adopts a layered architecture, and cross interference between sensors is eliminated; a dynamic weight distribution algorithm is built in the edge computing node, multi-source heterogeneous data are fused in real time, a fruit tree growth situation map is generated, and a low-power-consumption processor is adopted to support lightweight AI model deployment; the self-adaptive power supply module adopts a photovoltaic-temperature difference composite power generation structure to realize cable-free deployment; the wireless ad hoc network communication unit constructs an inter-tree relay network based on a LoRa protocol, supports low-power-consumption remote data return, and integrates a relay node health degree evaluation mechanism. The real-time performance of fruit tree growth monitoring, the data reliability and the situation analysis accuracy are improved.

The invention provides a low-power-consumption wireless ad hoc network dynamic configuration method and system based on adaptive routing, and relates to the technical field of network protocols, and the method comprises the steps: determining a data transmission path through obtaining node working state parameters and calculating an energy level value, and setting a multi-level data cache occupation threshold value; calculating a network load distribution state, and carrying out differentiated scheduling on nodes; selecting a low-power-consumption forwarding channel based on node routing adaptability; and monitoring the network state in real time and updating parameters. According to the invention, the network adaptability is improved, the communication power consumption is reduced, the network life cycle is prolonged, and the data transmission efficiency is improved.

The invention discloses a wireless ad hoc network secure communication method based on dynamic trust management, which comprises the following steps: setting initial trust values for all nodes, and detecting node interaction behaviors in real time; evaluating and dynamically adjusting a trust value according to a node interaction behavior; the source node communicates with the target node and interacts trust values of the nodes; in combination with a dynamic source routing protocol DSR, trust values of all nodes in the current path and a path average trust value are calculated; selecting a path meeting the dual trust threshold as a secure communication path; if the trust value of a certain node in the path is continuously lower than the threshold for three times, marking the node as a malicious node and adding the node into a blacklist for isolation; and if the trust value of the malicious node rises to be above the threshold value and lasts for 2 cycles, recovering the communication authority of the malicious node. According to the invention, the trust value can be adjusted according to the node interaction behavior, the secure communication path is screened, the malicious nodes are isolated, and the overall security of the network is improved.

The invention relates to the technical field of wireless communication, and discloses a method and a device for constructing a wireless ad hoc network without a signal area based on chain networking, and the method comprises the steps: carrying out the collaborative fusion of an identity label and a communication capability of a node in the chain networking, and obtaining the node capability information of the chain networking; performing relay capability evaluation on a target node in the wireless ad hoc network to obtain a topology construction basis; performing optimization forming on candidate nodes in the wireless ad hoc network to obtain a chain network topology of the wireless ad hoc network; establishing a bidirectional communication link between nodes in the chain network topology to form a preliminary communication network of the wireless ad hoc network; detecting the link communication quality of the preliminary communication network step by step to obtain a hierarchical link state of the wireless ad hoc network; dynamically negotiating a hierarchical link state, and establishing a stable communication path of the wireless ad hoc network; according to the invention, the construction accuracy of the chain networking-based wireless ad hoc network in the non-signal area can be improved.

The invention provides an underground space wireless ad hoc network time service network, and belongs to the technical field of time synchronization. Aiming at the characteristics that underground space is narrow, long and shielded and wireless signal propagation distance is limited, a multi-layer, heterogeneous and multi-node network architecture is adopted, function layering is carried out on constituent units of a time synchronization network according to different node types, and the constituent units are divided into time reference nodes, dynamic center nodes and synchronization nodes; the network architecture also adopts a layered architecture of a dynamic center network and a time synchronization subnetwork; the underground space nodes adopt a Mesh wireless ad hoc network, so that the requirements of real-time movement and dynamic networking of the nodes can be met; according to the time service network, a clock coarse adjustment and fine adjustment mode is adopted, evaluation of a dynamic center network node state and self-adaptive updating of a time reference are achieved through node state monitoring, the problem of rapid maneuvering establishment and maintenance of the underground space network time reference can be solved, and the ductility and robustness of the time service network are improved.

The invention relates to the technical field of fire-fighting navigation systems, and discloses a high-precision Beidou navigation system based on fire-fighting water source positioning. A water source feature acquisition module of the system acquires fire hydrant and underground pipe network surface material reflectivity data through a multispectral imager, and generates a water source feature vector set; the Beidou signal enhancement module is used for carrying out error correction on the original Beidou satellite signal by adopting a carrier phase difference technology; the dynamic base station network is used for deploying a plurality of base station nodes in an urban building dense area, and each node synchronously receives Beidou signals, calculates atmospheric delay errors and transmits the atmospheric delay errors to the central processing module through a wireless ad hoc network; the three-dimensional terrain matching module is used for carrying out iterative alignment on the building contour data scanned by the laser radar and the urban GIS elevation data, and establishing a centimeter-level precision three-dimensional model of the surrounding environment of the fire-fighting water source; and the multi-source data fusion module is used for receiving all the data and outputting optimal positioning coordinates of the fire-fighting water source.

The invention discloses a high-level geological disaster chain monitoring node deployment method based on a wireless ad hoc network, and relates to the technical field of geological disaster monitoring and early warning, and the method comprises the following steps: S1, obtaining interference characteristics through a time-frequency observation layer triggered by an earthquake, and building a time baseline; s2, identifying a cross-channel coupling relationship according to the energy spectrum and the drift baseline, and determining sensitive nodes; s3, reconstructing a convergent path by replacing a distortion channel with a shadow link; s4, constructing a time stack and suppressing routing oscillation by a hysteresis gate; s5, generating a time-varying virtual impedance route according to the time stack to realize peak shifting stable forwarding; and S6, completing broken-loop control of residual crosstalk through inverse phase traction and the metasurface antenna, and finally enabling the network to maintain long-term stable operation. According to the method, stable convergence and closed-loop regulation and control of the ad hoc network are realized through interference feature extraction, path reconstruction, time stack hysteresis vibration suppression, virtual impedance peak shifting forwarding and inverse phase broken-loop interference control.

The invention discloses a wireless ad hoc network GIS deformation monitoring method, system and device, and relates to the technical field of GIS state monitoring. The method comprises the steps of obtaining basic information of a target wireless ad hoc network GIS to perform historical deformation data mining, performing monitoring point screening, and determining a target deformation monitoring point set; obtaining a monitoring array set, and performing communication connection to form a wireless sensing network; performing continuous multi-dimensional sensing monitoring on the target deformation monitoring point, determining a multi-dimensional sensing monitoring data sequence set, transmitting the multi-dimensional sensing monitoring data sequence set to a central processing unit through a wireless sensing network, and identifying an abnormal deformation monitoring point set and an abnormal degree set; and carrying out cooperative adjustment on the preset monitoring frequency of the monitoring array set, and carrying out deformation monitoring through the adjusted monitoring array set. The technical problem of insufficient deformation monitoring precision of GIS equipment in the prior art is solved, and the technical effect of improving the deformation monitoring precision is achieved.

The invention discloses an emergency communication system and method, and belongs to the field of emergency communication. The emergency communication method comprises the following steps of: acquiring a link performance parameter of a satellite communication link associated with an adjacent station node; based on the state information and the satellite communication link state of the local station node, executing at least one of the following scheduling operations on the service data: determining a first transmission performance index for transmitting data through the satellite communication link of the local station node, determining a first transmission performance index of a composite path from a wireless ad hoc network to the adjacent station node based on the state information, determining a second transmission performance index of a composite path from the wireless ad hoc network to the adjacent station node and transmitting data through a satellite communication link of the adjacent station node based on the state information, and selecting a forwarding path according to a comparison result of the first transmission performance index and the second transmission performance index; or, when the flow of the data to be transmitted meets the preset bandwidth aggregation condition, dividing the data to be transmitted into the first data part and the second data part.

The invention provides a safety three-level management and control system in a complex environment, and the system comprises a first-level wearable sensing unit which is worn by an operator and is used for collecting environment parameters and physiological parameters of the operator and generating corresponding safety monitoring data; the second-stage relay gateway unit is used for establishing two-way communication connection with the first-stage wearable sensing unit through a first wireless self-organizing network so as to receive and gather the safety monitoring data and relaying the gathered data to the outside through a second high-bandwidth self-organizing communication link; and the third-stage monitoring and distributing unit is used for receiving the safety monitoring data from the second-stage relay gateway unit and carrying out centralized monitoring and management on the operation state through a local network or a remote network. The method is suitable for operation real-time scenes in complex environments with serious metal shielding and limited signals, such as mines, factory closed spaces, steel structures, underground facilities and the like.

The invention discloses a wireless seismograph low-delay routing method based on directed topology perception and Bayesian optimization, and belongs to the field of wireless ad hoc network communication. According to the method, a topological position identifier TPI is introduced to represent a directed logic position of each node relative to a root node. According to MPR selection, TPI value differences, link quality and residual energy are comprehensively considered, and a multi-index weighting function is constructed to guide optimal MPR node selection. When generating the TC message, the MPR node only contains node information with the TPI value smaller than that of the node, the node only receives the TC message in the direction with the smaller TPI value and generates a topology table, and a directed acyclic multi-path routing set pointing to a root node is constructed. And carrying out routing selection by combining the hop count, the average TPI difference value, the link quality and the residual energy, and introducing a Bayesian optimization algorithm to adaptively adjust the weight by taking the transmission time delay as feedback. The method is suitable for the seismograph wireless ad hoc network with near-surface deployment, large link fluctuation, topology linearity and fixed target node as the root node, and effectively improves the real-time performance and survivability of network transmission.

The invention relates to the technical field of wind power Internet of Things communication, in particular to a wind power plant long-distance communication method and system based on a wireless ad hoc network, and the method comprises the steps: deploying a relay module with a wind driven generator as a node, and carrying out the self-adaptive networking based on geographic coordinates and signal intensity; electing a cluster head node to establish a tree-mesh hybrid topology; the source node sends a routing request, establishes a data transmission path, monitors performance and triggers retransmission; data are transmitted in a hierarchical manner, and low time delay of real-time data and high throughput of daily use are guaranteed; and preprocessing the cluster head, compressing the data, adding a security label and then forwarding. According to the method, signal interruption caused by blade shielding is solved, key instruction time delay is reduced through hierarchical routing and composite index evaluation, log transmission efficiency is improved through the multi-path fountain code technology, the service blocking problem is eradicated, energy consumption is reduced through the dormancy scheduling and compression algorithm, data safety is enhanced, the network lifetime is prolonged, and the total ownership cost of a communication system is reduced.

The present application relates to the technical field of data communication. Disclosed are a communication method, apparatus and device based on a wireless ad hoc network. The method comprises: collecting real-time network topology information of each candidate communication terminal; performing network center node screening on a target communication terminal and a plurality of communication terminals to obtain a target network center node and a plurality of network secondary center nodes, and determining a current center communication terminal corresponding to the target network center node and an initial communication terminal corresponding to each network secondary center node; generating a center list, generating a forwarding sequence list on the basis of the center list, generating a data slot allocation table on the basis of data slot reservation information, and sending or forwarding the center list, the forwarding sequence list and the data slot allocation table in a target radio frequency channel; and sending a management control instruction in the target radio frequency channel, and controlling all initial communication terminals in a group network to execute the management control instruction. The present application improves both the efficiency and accuracy of communication based on a wireless ad hoc network.

The invention belongs to the field of unmanned aerial vehicle cluster scheduling and wireless self-organizing networks, and relates to a multi-unmanned aerial vehicle forest fire extinguishing cooperative scheduling system based on a Mesh network, which comprises a ground control station responsible for strategy generation, task distribution coordination and remote scheduling control; a plurality of unmanned aerial vehicles equipped with communication and sensing modules form a honeycomb Mesh network to realize detection, relaying and fire extinguishing; the air Mesh communication network is dynamically constructed, comprises a backbone layer and an access layer, and supports distributed control and collaborative operation; the data sensing and sensing system is used for fusing information such as images, temperature and infrared rays to carry out fire behavior identification; and the task scheduling and energy management module supports task division, path planning and endurance guarantee. According to the system, an integrated closed-loop process of sensing, communication, scheduling and fire extinguishing is realized, and the response speed of forest fire extinguishing, the resource scheduling efficiency and the fire extinguishing accuracy are improved.

The invention discloses a distributed collaborative waveform switching method and system oriented to networked computing, and mainly solves the problems of overlarge time delay and overhigh complexity when distributed collaborative waveform switching achieves the consistency of the whole network in a multi-hop ad hoc network environment in the prior art. The implementation scheme comprises a distributed collaboration stage and a distributed decision consistency stage. Wherein in the distributed collaboration stage, each node periodically exchanges a state packet and a collaboration data packet, and in the exchange process, distributed waveform decision making and time delay information updating are respectively executed in the nodes; in the distributed decision consistency stage, a unique central node is selected through the collaborative data packet stored in the distributed collaborative stage, and the central node performs majority decision through the internally stored waveform decision information of each node to make an optimal waveform switching decision. According to the method, the calculation complexity can be reduced, the decision timeliness and accuracy can be improved, the distributed consistency of the whole network can be ensured, the communication time delay can be remarkably reduced, the system performance can be improved, and the method can be used for networked calculation in a wireless ad hoc network.

The invention relates to the technical field of communication, and provides an intelligent networking method and system for a wireless ad hoc network, and the method comprises the steps: firstly collecting the position, signal strength, bandwidth load and other state information of each ad hoc network node, and then transmitting the state information to a distributed edge calculation module through a wireless module; the method comprises the following steps: establishing a network topological graph reflecting link signal attenuation and packet loss rate, transmitting ad-hoc network node state information and the network topological graph to a cloud computing platform for comprehensive analysis to generate a current optimal transmission path, networking based on the current optimal transmission path, and finally continuously monitoring the moving state of the ad-hoc network node and updating the information of the ad-hoc network node. And repeating the steps to dynamically optimize the networking strategy. Therefore, the transmission efficiency and the stability of the wireless ad hoc network can be effectively improved.

The invention discloses a self-adaptive anti-interference scheduling method and system for a wireless ad hoc network, and relates to the technical field of wireless communication, and the method comprises the steps: collecting a service flow in the wireless ad hoc network in real time, and monitoring data environment parameters which comprise interference intensity and a network load rate; calculating a basic resource rate by using a Mie equation according to the interference intensity, dynamically adjusting parameters of the Mie equation according to a network load rate, and generating a dynamic total resource amount; constructing an orthogonal ARU matrix according to the total amount of the dynamic resources, constraining ARU correlation coefficients of adjacent nodes through a Hadamard matrix, and generating a conflict-free ARU allocation matrix; and splitting the service flow into atomic data blocks, mapping the atomic data blocks to the conflict-free ARU allocation matrix by adopting a Hungary algorithm, and generating a three-dimensional resource scheduling table. According to the method, the resource allocation precision and the system robustness are improved; the multi-dimensional resource conflict probability is reduced, and the spectrum multiplexing efficiency and the network stability are improved.

The invention relates to the technical field of wireless networking, in particular to a shipborne digital wireless ad hoc network method and system, and the method comprises the following steps: obtaining ship communication equipment information, constructing a layered mark matrix, generating a node role identifier set, monitoring response time delay, judging a connection relation, and establishing a communication topology. And optimizing spectrum allocation according to an interference ratio and an overlapping coefficient, completing channel matching and path completion, executing AES encryption and encapsulation of data frames, and decrypting and verifying time delay record effective data frames by a receiving end according to a key index. According to the invention, through combination of hierarchical marks established by node equipment information and communication roles, the accuracy of inter-node connection priority and hierarchical mapping is improved, through dual detection of the interference ratio and the spectrum overlapping coefficient of the channel, the stability of a communication path and the channel utilization rate are improved, and the communication efficiency is improved. In a node link matching process, path breakpoints are complemented to guarantee network integrity, a security header field is embedded in combination with a key index and a channel number, and the security guarantee level of data encryption transmission is improved.

The invention discloses a communication time delay optimization method in a wireless ad hoc network, which belongs to the technical field of wireless ad hoc network communication, and comprises the following steps: pre-allocating time slots in an ad hoc network transmission period to obtain a new ad hoc network transmission period; the time slots comprise dynamic time slots, static time slots and pre-allocated dynamic time slots; the static time slot is used for sending data of a corresponding node or sending a resource notification for resource scheduling; the pre-allocated dynamic time slot is used for directly sending data of the corresponding node; if the scheduled time slot is a pre-allocated dynamic time slot, judging whether the number of pre-allocated dynamic time slots configured by a target base station where the pre-allocated dynamic time slot is located meets the data volume required to be sent, if so, directly sending, and if not, applying for the dynamic time slot for sending; the invention aims to solve the problems that the broadcast period of an ad-hoc network is prolonged and the communication delay is multiplied when the number of nodes is larger in an ad-hoc network mode at present.

The invention relates to the field of signal loop control, particularly discloses a medium-voltage switch cabinet intelligent signal loop system and method based on a wireless ad hoc network, and constructs a collaborative diagnosis system composed of intelligent sensing nodes, an edge computing gateway and the wireless ad hoc network. The intelligent sensing node immediately captures and encapsulates state data containing a high-precision local timestamp at the moment that the state of the circuit breaker changes. After the data is transmitted to the edge computing gateway through the wireless ad hoc network in a multi-hop mode, the gateway carries out deep analysis on the received data packet through a special time sequence analysis algorithm, and therefore inherent mechanical operation time delay and variable wireless network transmission time delay can be effectively separated out. Therefore, the technical problem of unreliable diagnosis result caused by confusion of network delay jitter and mechanical delay is solved, and accurate judgment of the equipment state is realized.

The invention provides a wireless ad hoc network time synchronization method, device and system and communication equipment, and relates to the technical field of communication. The wireless ad hoc network time synchronization method comprises the following steps: generating a reference clock signal based on a GNSS (Global Navigation Satellite System) signal of a global navigation satellite system; generating a local clock signal synchronized with the reference clock signal; determining a sending window of the wireless frame according to preset sending time slot configuration; wherein the starting moment of the sending window is set to be deviated from a specified edge of the reference clock signal by a preset time delay; generating and sending the wireless frame in the sending window; wherein the wireless frame at least comprises equipment identification information and time synchronization identification information, and the initial sending time of the wireless frame is consistent with the initial time of the sending window.