A comprehensive intelligent anti-error real-time verification method and system supporting air wake-up

Abstract

The present invention relates to a comprehensive intelligent anti-error real-time verification method supporting air wake-up, comprising: wireless access nodes and wireless aggregation nodes, wireless aggregation nodes and wireless sensors perform data interaction based on time division multiple access technology, and when a specific group of wireless sensors needs to be awakened, time division multiplexing is used to multiplex the control and response parts of a communication cycle downlink channel into a sending wake-up sequence; the wireless sensor automatically wakes up from a sleep state in a short period, and opens a smaller window to monitor the signal after awakening, and if the monitored signal is a wake-up sequence, data is uploaded and a response is waited. The present invention also discloses a comprehensive intelligent anti-error real-time verification system supporting air wake-up. The present invention introduces air wake-up technology to support real-time query, which improves the real-time performance of anti-error verification and thus enhances security; the air wake-up technology used in the present invention can greatly reduce the power consumption of the query mode to ensure long-term operation.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission and transformation equipment maintenance safety, and in particular to a comprehensive intelligent error-proof real-time verification method and system supporting air wake-up. Background Art

[0002] In wireless network applications, nodes are usually required to sleep as much as possible to minimize power consumption, but it is also hoped that the nodes can send and receive wireless data as promptly as possible. This seems to be an irreconcilable contradiction. With air wake-up (wireless wake-up), even if the node is in sleep mode, it can be directly awakened by wireless means when the node is needed to work. When the module is defined as a transmitter, a preamble code of a certain time will be automatically added before transmission, and the wireless node will wake up periodically to monitor the network. Once the preamble code is captured, it will enter the normal receiving process. If not, it will immediately sleep and wait for the next wake-up. In order to ensure that the wireless node does not miss valid data during data transmission, the mechanism must ensure that the duration of the preamble code is slightly longer than the node's sleep time, such as Figure 1 shown.

[0003] The comprehensive intelligent anti-error system mainly ensures the safety of switching work (line in transmission state, power-off maintenance, standby state switching work) and equipment maintenance. It mainly monitors the grounding wire, pressure plate, safety lock and relay status, and verifies whether they are in the correct state according to the preset logic. Take the grounding wire as an example. The temporary grounding wire is an indispensable safety measure in the maintenance and overhaul operation of the substation. If there are misoperations such as mishanging and misremoving during use, it will seriously endanger the personal safety of the on-site staff and the continuous and stable operation of the power equipment. In the actual hanging operation, it is necessary to correctly determine the model, voltage level and hanging point of the required grounding wire according to the specific conditions of the work site. This puts high demands on management personnel and operators. Before hanging on site, multiple people and repeated confirmation are required, which greatly affects the efficiency of on-site operations. Even so, it is still difficult to avoid hanging accidents. In order to solve this pain point, the anti-misoperation intelligent grounding wire came into being.

[0004] Most of the current intelligent grounding wires only upload their own status when the connection status changes. Some of them have added periodic status uploads for low power consumption considerations. The upload cycle is generally greater than 10 minutes, and the real-time performance is not strong. The anti-error status only supports passive uploads, not active queries. In addition, when the key operation nodes perform anti-error joint verification, the wireless device part can only use the historical data uploaded last time, and the verification real-time performance is poor. Summary of the invention

[0005] The primary purpose of the present invention is to provide a method for introducing active query on the server side based on periodic upload of compatible sensors, which is more flexible in application and ensures the real-time verification of data at key nodes for error prevention, and is a comprehensive intelligent error prevention real-time verification method that supports air wake-up.

[0006] To achieve the above object, the present invention adopts the following technical solution: a comprehensive intelligent anti-error real-time verification method supporting air wake-up, the method comprising the following steps in order:

[0007] (1) The wireless access node and the wireless aggregation node, and the wireless aggregation node and the wireless sensor exchange data based on the time division multiple access technology. When a specific group of wireless sensors needs to be awakened, time division multiplexing is used to multiplex the control and response parts of a downlink channel of a communication cycle into a sending awakening sequence; the wireless sensor includes an intelligent ground wire and a wireless controller;

[0008] (2) The wireless sensor automatically wakes up from the sleep state in a short period of time, and opens a small window to listen for signals after waking up. If the signal detected is a wake-up sequence, it uploads data and waits for a response. (3) In addition to monitoring the air wake-up sequence, the wireless sensor retains the periodic self-wake-up upload mode and uploads data periodically.

[0009] The step (1) specifically comprises the following steps:

[0010] (1a) When the air wake-up is not initiated, the wireless access node and the wireless aggregation node, and the wireless aggregation node and the wireless sensor implement wireless communication through time division multiple access. A communication cycle is divided into a downlink channel and an uplink channel. The downlink channel is sent from the wireless access node and the wireless aggregation node to the wireless sensor, which is used for clock synchronization, sending control and scheduling information, and responding to requests; the uplink channel is sent from the wireless sensor to the wireless access node and the wireless aggregation node, which is used for resource requests and data uploads.

[0011] (1b) When wake-up is required, the control and response part of the downlink channel in a communication cycle continuously sends a wake-up sequence, which consists of a large number of small data packets with a payload of 2 bytes. The sequence is sent after the clock synchronization packet is sent until the downlink channel ends; the uplink channel remains unchanged to avoid signal conflicts with wireless sensors;

[0012] (1c) The 2-byte segment in the leading sequence is defined as the ID of the wireless sensor or the wireless sensor group ID. When the segment detected in the air wake-up monitoring state contains its own ID, the wireless sensor is awakened and performs data upload.

[0013] The step (2) specifically comprises the following steps:

[0014] (2a) The wireless sensor wakes up the wireless module from the sleep state in a short period, and opens a small window to listen to the signal after waking up. The window size is set to 2ms. The wake-up period is one node communication period, and the window position is half the downlink channel communication period after the last working mode received clock synchronization frame.

[0015] (2b) After waking up, the system monitors the signal to determine whether the signal of its own frequency band is received. If the signal is received, the system waits for a data packet to be received to determine whether it is a wake-up data packet. If the signal of the frequency band is not received, the system continues to sleep.

[0016] (2c) parsing the received data packet, if it is a wake-up data packet, waiting for the next cycle of data communication; if it is not a wake-up data packet, entering sleep mode;

[0017] (2d) After detecting the wake-up packet, wait for the clock broadcast frame and perform clock synchronization; monitor the downlink channel and wait for the node scheduling instruction; when receiving the scheduling instruction, upload data in the specified time slot; enter sleep mode when receiving data feedback.

[0018] The step (3) specifically refers to: according to the timer in the wireless sensor MCU, periodically waking up to enter the working mode, in the working mode, synchronizing the clock with the node, requesting resources for data transmission, uploading data, receiving responses, and entering sleep mode after completion.

[0019] Another object of the present invention is to provide a system for a comprehensive intelligent anti-error real-time verification method supporting air wake-up, comprising:

[0020] The wireless access node receives data from the wireless aggregation node and accesses the platform layer network through the wired network. The wireless access node has a built-in edge proxy module, which interacts with the platform layer server in the upstream and performs message response and pre-allocated time slot management in the downstream.

[0021] Multiple wireless aggregation nodes are used to receive data packets from wireless sensors and computer keys and forward the data packets to wireless access nodes according to priority;

[0022] The intelligent grounding wire uses a grounding detection sensor equipped with a wireless module to monitor the grounding status in real time and upload it to the wireless aggregation node periodically. It will upload the status immediately when the grounding status changes and upload the status after receiving the air wake-up query command.

[0023] Computer keys use handheld mobile terminals to interact with wireless aggregation nodes, and complete the unlocking and locking of anti-mistake locks after security verification;

[0024] The wireless controller is equipped with a wireless module and a sensor for monitoring the on / off state of the control switch. The sensor monitors the on / off state of the current control switch, receives the control command forwarded by the wireless aggregation node, uploads the control state of the current control switch, and receives instructions to close and open the control switch.

[0025] The platform layer server is used to receive the data of the computer key, intelligent grounding wire, and wireless controller forwarded by the wireless access node and the wireless aggregation node, perform security verification, and send the verification result to the computer key;

[0026] Smart grounding wires, computer keys, and wireless controllers all interact with wireless aggregation nodes for wireless communication data. Multiple wireless aggregation nodes are connected to wireless access nodes to complete data forwarding. Wireless access nodes are connected to the power grid intranet platform layer server through a secure isolation gateway. Smart grounding wires and wireless controllers support air wake-up initiated by wireless access nodes and wireless aggregation nodes. In addition to periodic self-wake-up to upload data, they can be awakened and queried by wireless access nodes and wireless aggregation nodes.

[0027] It can be seen from the above technical scheme that the beneficial effects of the present invention are: first, the present invention introduces the air wake-up technology to support real-time query, which improves the real-time nature of anti-error verification and thus enhances security; second, the air wake-up technology adopted by the present invention can greatly reduce the power consumption of the query mode to ensure long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the schematic diagram of the universal air wake-up;

[0029] Figure 2 It is the network topology diagram of the comprehensive intelligent error prevention system;

[0030] Figure 3 It is the time domain resource diagram of the wireless sensor periodically uploading data;

[0031] Figure 4 It is the time domain resource diagram of the air wake-up upload data;

[0032] Figure 5 It is a time domain resource model diagram of a wireless node;

[0033] Figure 6 This is a diagram of the time slot allocation process for wireless sensors to upload data. DETAILED DESCRIPTION

[0034] like Figure 2 As shown, a comprehensive intelligent anti-error real-time verification method supporting air wake-up includes the following steps in sequence:

[0035] (1) The wireless access node 5 and the wireless aggregation node 4, and the wireless aggregation node 4 and the wireless sensor exchange data based on the time division multiple access technology. When a specific group of wireless sensors needs to be awakened, time division multiplexing is used to multiplex the control and response parts of a communication cycle downlink channel into a sending awakening sequence; the wireless sensor includes an intelligent ground wire 2 and a wireless controller 3;

[0036] (2) The wireless sensor automatically wakes up from the sleep state in a short period of time, and opens a small window to listen for signals after waking up. If the signal detected is a wake-up sequence, it uploads data and waits for a response. (3) In addition to monitoring the air wake-up sequence, the wireless sensor retains the periodic self-wake-up upload mode and uploads data periodically.

[0037] The step (1) specifically comprises the following steps:

[0038] (1a) When the air wake-up is not initiated, the wireless access node 5 and the wireless aggregation node 4, and the wireless aggregation node 4 and the wireless sensor realize wireless communication through time division multiple access. A communication cycle is divided into a downlink channel and an uplink channel. The downlink channel is sent by the wireless access node 5 and the wireless aggregation node 4 to the wireless sensor, which is used for clock synchronization, sending control and scheduling information, and answering requests; the uplink channel is sent by the wireless sensor to the wireless access node 5 and the wireless aggregation node 4, which is used for resource request and data upload;

[0039] (1b) When wake-up is required, the control and response part of the downlink channel in a communication cycle continuously sends a wake-up sequence, which consists of a large number of small data packets with a payload of 2 bytes. The sequence is sent after the clock synchronization packet is sent until the downlink channel ends; the uplink channel remains unchanged to avoid signal conflicts with wireless sensors;

[0040] (1c) The 2-byte segment in the leading sequence is defined as the ID of the wireless sensor or the wireless sensor group ID. When the segment detected in the air wake-up monitoring state contains its own ID, the wireless sensor is awakened and performs data upload.

[0041] The step (2) specifically comprises the following steps:

[0042] (2a) The wireless sensor wakes up the wireless module from the sleep state in a short period, and opens a small window to listen to the signal after waking up. The window size is set to 2ms. The wake-up period is one node communication period, and the window position is half the downlink channel communication period after the last working mode received clock synchronization frame.

[0043] (2b) After waking up, the system monitors the signal to determine whether the signal of its own frequency band is received. If the signal is received, the system waits for a data packet to be received to determine whether it is a wake-up data packet. If the signal of the frequency band is not received, the system continues to sleep.

[0044] (2c) parsing the received data packet, if it is a wake-up data packet, waiting for the next cycle of data communication; if it is not a wake-up data packet, entering sleep mode;

[0045] (2d) After detecting the wake-up packet, wait for the clock broadcast frame and perform clock synchronization; monitor the downlink channel and wait for the node scheduling instruction; when receiving the scheduling instruction, upload data in the specified time slot; enter sleep mode when receiving data feedback.

[0046] The step (3) specifically refers to: according to the timer in the wireless sensor MCU, periodically waking up to enter the working mode, in the working mode, synchronizing the clock with the node, requesting resources for data transmission, uploading data, receiving responses, and entering sleep mode after completion.

[0047] like Figure 2 As shown, the system includes:

[0048] The wireless access node 5 receives data from the wireless aggregation node 4 and accesses the platform layer network through the wired network. The wireless access node 5 has a built-in edge proxy module, which interacts with the platform layer server 7 in the uplink and performs message response and pre-allocated time slot management in the downlink.

[0049] A plurality of wireless aggregation nodes 4 are used to receive data packets from wireless sensors and computer keys 1, and forward the data packets to wireless access nodes 5 according to priority;

[0050] The intelligent grounding wire 2 uses a grounding detection sensor equipped with a wireless module to monitor the grounding status in real time and upload it to the wireless aggregation node 4 periodically. It uploads the status immediately when the grounding status changes and uploads the status after receiving the air wake-up query command.

[0051] The computer key 1 uses a handheld mobile terminal to exchange data with the wireless aggregation node 4, and completes the unlocking and locking of the anti-mistake lock after security verification;

[0052] The wireless controller 3 is provided with a wireless module and a sensor for monitoring the on / off state of the control switch. The sensor monitors the on / off state of the current control switch, receives the control command forwarded by the wireless aggregation node 4, uploads the control state of the current control switch, and receives the instruction to close and open the control switch;

[0053] The platform layer server 7 is used to receive the data of the computer key 1, the intelligent grounding wire 2, and the wireless controller 3 forwarded by the wireless access node 5 and the wireless aggregation node 4, perform security verification, and send the verification result to the computer key 1;

[0054] The smart grounding wire 2, computer key 1, and wireless controller 3 all interact with the wireless aggregation node 4 for wireless communication data. Multiple wireless aggregation nodes 4 are connected to the wireless access node 5 to complete data forwarding; the wireless access node 5 is connected to the power grid intranet platform layer server 7 through the security isolation gateway 6; the smart grounding wire 2 and the wireless controller 3 support air wake-up initiated by the wireless access node 5 and the wireless aggregation node 4. In addition to periodic self-wake-up to upload data, they can be awakened and queried by the wireless access node 5 and the wireless aggregation node 4.

[0055] The following combination Figures 2 to 6 The present invention is further described.

[0056] The smart grounding wire 2, wireless controller 3, and computer key 1 interact with the platform layer server 7 through the infinite aggregation node. The smart grounding wire 2 and the wireless controller 3 support air wake-up technology. In addition to periodic self-wake-up to upload data, they can also be awakened and queried by the wireless access node 5 and the wireless aggregation node 4.

[0057] The wireless access node 5 and the wireless aggregation node 4 support the air wake-up function. When receiving the query instruction from the platform layer server 7, they multiplex the air wake-up scheduling in the time domain to wake up the corresponding wireless sensor to query the status.

[0058] During the switching operation, before hanging or removing the ground wire, the wireless access node 5 and the wireless aggregation node 4 query the wireless sensor through air wake-up, verify the current link status, and confirm whether the operation ticket is executed correctly.

[0059] After the operation ticket is completed, wake up the wireless sensor, ground wire, pressure plate, etc. again to confirm whether the operation is completed correctly.

[0060] Every day and every time the construction site is entered, when the anti-mistake safety lock is unlocked, the platform layer server 7 initiates an air wake-up through the wireless access node 5 and the wireless aggregation node 4 to verify the current safety status of the equipment in real time.

[0061] The wireless access node 5 and the wireless aggregation node 4 communicate with multiple wireless sensors through time division multiple access. A communication cycle is divided into a downlink channel and an uplink channel. The downlink channel (sent from the wireless access node 5 and the wireless aggregation node 4 to the wireless sensor) is used for clock synchronization, sending control and scheduling information, and answering requests; the uplink channel (sent from the wireless sensor to the wireless access node 5 and the wireless aggregation node 4) is used for resource requests and data uploads. The wireless sensor retains the periodic self-wake-up upload mode, that is, it periodically enters the working mode according to its own timer. In the working mode, it synchronizes the clock with the node, requests resources for data transmission, performs data synchronization, receives responses, and enters sleep after completion.

[0062] The wireless access node 5 and the wireless aggregation node 4 use time division multiplexing. When a specific group of wireless sensors needs to be awakened, a communication cycle downlink channel is multiplexed to send a wake-up preamble sequence. The preamble sequence consists of a large number of small data packets with a payload of 2 bytes (wake-up packet ID), which are sent after the clock synchronization packet is sent until the downlink channel ends. Note: The uplink channel remains unchanged to avoid signal conflicts with wireless sensors.

[0063] In the air wake-up mode, the wireless module automatically wakes up from the sleep state in a short period of time, and opens a very small window to monitor the signal after waking up. The window size can be set to 2ms. The monitoring period is a node communication period, and the window position is half of the downlink channel communication period after the last working mode received clock synchronization frame. Figure 3 As shown, the five rectangular parts in the legend represent the five open windows.

[0064] If no leading signal is heard within the window duration, the window is closed and the system continues to sleep. When a signal is heard, the system waits for a complete data packet to be received, checks the data packet payload, and compares it with the preset two-byte information.

[0065] If the preset information is not heard, the device will continue to enter the sleep state. If the preset wake-up segment is heard, the device will remain in the working state and start to listen to the clock information of the wireless aggregation node 4. If the clock synchronization frame is not received within a complete communication cycle, the wireless sensor will think that it is accidentally awakened by noise and continue to enter the air wake-up listening state. After receiving the clock synchronization frame, it will wait for the downlink scheduling instruction and upload its own data at the time specified by the instruction, such as Figure 4 After a certain period (configurable), if the system does not receive its own time slot scheduling instruction, it will re-enter the air wake-up monitoring state.

[0066] The 2-byte segment in the leading sequence is defined as the ID of the wireless sensor or the sensor group ID. When the segment detected by the wireless sensor in the air wake-up monitoring state contains its own ID, it is awakened and performs data upload.

[0067] If the receiver does not need to upload data periodically or perform clock calibration, and only waits for air wake-up queries, the monitoring period must be less than the preamble length.

[0068] The clock synchronization frame and the uplink data frame are retained, and the downlink data frame is temporarily multiplexed as the wake-up preamble. The uplink channel remains unchanged and no signal conflict occurs.

[0069] The receiver automatically wakes up the upload data in a reserved cycle, performs clock calibration after each wakeup, and then opens a small window to listen to the preamble code at the half downlink channel communication cycle position of the last clock frame when in sleep mode. The window listening cycle is one communication cycle. When the wakeup signal is received, it enters the working mode.

[0070] If the receiver does not need to automatically wake up periodically, the interval period of the air wakeup monitoring window must be less than one downlink channel period.

[0071] The present invention introduces a method of active query on the server side based on periodic upload of compatible sensors, which is more flexible in application. The anti-error system that introduces active wake-up technology can ensure the real-time verification of data at key anti-error nodes, and the frequency of data upload of each terminal module can be reduced accordingly.

[0072] The sensor wireless network adopts time division multiple access technology, and the wireless node time domain communication resources are allocated to 6 channels as shown in Table 1.

[0073] Table 1 Channel type definition

[0074] 1.Tab.1 Definition for channel type

[0075]

[0076] The above 6 channels are mapped to communication time domain resources as follows: Figure 5 As shown, a time domain periodic communication frame is divided into a downlink frame (DL) and an uplink frame (UL). The channel order is first the 4 channels in the downlink frame: broadcast channel, control channel, multicast channel, downlink shared channel, and then the 2 channels in the uplink frame: uplink shared channel and random contention channel.

[0077] Wireless sensors use competitive time slots to obtain channel resources and send uplink data. The data upload process requires three interactions, such as Figure 6 As shown. The wireless sensor requests the node to send data time slot resources through the uplink random competition channel; the wireless aggregation node 4 allocates the time slot resources of the most recently available uplink shared channel, and feeds back to the wireless sensor via the downlink control channel; the wireless sensor sends data at the allocated uplink shared channel time slot. The three interactions are in different communication frames, that is, it takes at least three communication frames to upload data once. If a relay cascade occurs, the communication time will increase exponentially accordingly. If the time slot resources of the next communication frame are exhausted when the time slot is requested, the node will sequentially allocate the time slot resources of the most recently available communication frame. When a large amount of wireless sensor data is uploaded, competitive allocation may cause the data transmission delay to be much longer than three communication frame cycles.

[0078] In summary, the present invention introduces the air wake-up technology to support real-time query, which improves the real-time performance of anti-error verification, thereby enhancing security; the air wake-up technology adopted by the present invention can greatly reduce the power consumption of the query mode to ensure long-term operation.

Claims

1. A comprehensive intelligent anti-error real-time verification method supporting air wake-up, characterized in that: The method comprises the following steps in order: (1) The wireless access node and the wireless aggregation node, and the wireless aggregation node and the wireless sensor exchange data based on the time division multiple access technology. When a specific group of wireless sensors needs to be awakened, time division multiplexing is used to multiplex the control and response parts of a downlink channel of a communication cycle into a sending awakening sequence; the wireless sensor includes an intelligent ground wire and a wireless controller; (2) The wireless sensor automatically wakes up from the dormant state in a short period of time, and after waking up, it opens a small window to listen for signals. If the signal it listens to is a wake-up sequence, it uploads data and waits for a response; (3) In addition to monitoring the air wake-up sequence, the wireless sensor retains the periodic self-wake-up upload mode and periodically uploads data; The step (1) specifically comprises the following steps: (1a) When the air wake-up is not initiated, the wireless access node and the wireless aggregation node, and the wireless aggregation node and the wireless sensor implement wireless communication through time division multiple access. A communication cycle is divided into a downlink channel and an uplink channel. The downlink channel is sent from the wireless access node and the wireless aggregation node to the wireless sensor, which is used for clock synchronization, sending control and scheduling information, and responding to requests; the uplink channel is sent from the wireless sensor to the wireless access node and the wireless aggregation node, which is used for resource requests and data uploads. (1b) When wake-up is required, the control and response part of the downlink channel in a communication cycle continuously sends a wake-up sequence, which consists of a large number of small data packets with a payload of 2 bytes. The sequence is sent after the clock synchronization packet is sent until the downlink channel ends; the uplink channel remains unchanged to avoid signal conflicts with wireless sensors; (1c) The 2-byte segment in the wake-up sequence is defined as the ID of the wireless sensor or the wireless sensor group ID. When the segment detected by the wireless sensor in the air wake-up monitoring state contains its own ID, it is awakened and performs data upload.

2. The comprehensive intelligent anti-error real-time verification method supporting air wake-up according to claim 1 is characterized in that: The step (2) specifically comprises the following steps: (2a) The wireless sensor wakes up the wireless module from the sleep state in a short period, and opens a small window to listen to the signal after waking up. The window size is set to 2ms. The wake-up period is one node communication period, and the window position is half the downlink channel communication period after the last working mode received clock synchronization frame. (2b) After waking up, the system monitors the signal to determine whether the signal of its own frequency band is received. If the signal is received, the system waits for a data packet to be received to determine whether it is a wake-up data packet. If the signal of the frequency band is not received, the system continues to sleep. (2c) parsing the received data packet, if it is a wake-up data packet, waiting for the next cycle of data communication; if it is not a wake-up data packet, entering sleep mode; (2d) After detecting the wake-up packet, wait for the clock broadcast frame and perform clock synchronization; monitor the downlink channel and wait for the node scheduling instruction; when receiving the scheduling instruction, upload data in the specified time slot; enter sleep mode when receiving data feedback.

3. The comprehensive intelligent anti-error real-time verification method supporting air wake-up according to claim 1 is characterized in that: The step (3) specifically refers to: according to the timer in the wireless sensor MCU, periodically waking up to enter the working mode, in the working mode, synchronizing the clock with the node, requesting resources for data transmission, uploading data, receiving responses, and entering sleep mode after completion.

4. A system for implementing the comprehensive intelligent anti-error real-time verification method supporting air wake-up according to any one of claims 1 to 3, characterized in that: include: The wireless access node receives data from the wireless aggregation node and accesses the platform layer network through the wired network. The wireless access node has a built-in edge proxy module, which interacts with the platform layer server in the upstream and performs message response and pre-allocated time slot management in the downstream. Multiple wireless aggregation nodes are used to receive data packets from wireless sensors and computer keys and forward the data packets to wireless access nodes according to priority; The intelligent grounding wire uses a grounding detection sensor equipped with a wireless module to monitor the grounding status in real time and upload it to the wireless aggregation node periodically. It will upload the status immediately when the grounding status changes and upload the status after receiving the air wake-up query command. Computer keys use handheld mobile terminals to interact with wireless aggregation nodes, and complete the unlocking and locking of anti-mistake locks after security verification; The wireless controller is equipped with a wireless module and a sensor for monitoring the on / off state of the control switch. The sensor monitors the on / off state of the current control switch, receives the control command forwarded by the wireless aggregation node, uploads the control state of the current control switch, and receives instructions to close and open the control switch. The platform layer server is used to receive the data of the computer key, intelligent grounding wire, and wireless controller forwarded by the wireless access node and the wireless aggregation node, perform security verification, and send the verification result to the computer key; The intelligent ground wire, computer key, and wireless controller all interact with the wireless aggregation node for wireless communication data. Multiple wireless aggregation nodes are connected to the wireless access node to complete data forwarding. The wireless access node is connected to the power grid intranet platform layer server through a secure isolation gateway; the intelligent grounding wire and wireless controller support air wake-up initiated by the wireless access node and the wireless aggregation node. In addition to periodic self-wake-up to upload data, it can be awakened and queried by the wireless access node and the wireless aggregation node.

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