A data wireless transmission system and method based on IoT technology

Abstract

The application relates to the technical field of data transmission, in particular to a data wireless transmission system and method based on IoT technology. A wireless network subsystem is composed of wireless Mesh nodes, forms a covered wireless Mesh network based on multi-hop ad hoc networking, a multifunctional data acquisition and coding subsystem integrates a communication interface, connects and acquires sensing data of a wind turbine generator, and a management application subsystem is in communication connection with the multifunctional data acquisition and coding subsystem through the wireless Mesh network. The application can reduce the construction and operation and maintenance cost of a wind farm communication network, does not need to dig a groove and lay optical cables, avoids problems such as easy aging of optical fibers, difficulty in fault positioning, and inflexible expansion, adopts wireless Mesh nodes with a multi-radio orthogonal multi-channel design, combines a wireless link calculation method to perform node site selection and transmission power optimization, and realizes full coverage of the wireless network of the whole wind farm.

Description

Technical Field

[0001] This invention relates to the field of data transmission technology, and in particular to a wireless data transmission system and method based on IoT technology. Background Technology

[0002] With the advancement of smart grid and digital power plant construction, wind farms are increasingly demanding data collection and transmission for turbine operation status monitoring, video surveillance, and fire early warning systems. Currently, wind farm data transmission primarily relies on fiber optic communication. While fiber optic communication offers advantages such as high bandwidth and stability, it suffers from the following drawbacks in the wind farm environment.

[0003] Fiber optic cable laying requires trenching, pipe laying, and splicing. For wind farms with many discrete monitoring points, the construction and expansion costs increase significantly. Fiber optic lines are prone to aging, wind and sand erosion, and small animal gnawing. Once a fiber break occurs, it is difficult to locate the fault and the repair cycle is long. When new monitoring points are needed, fiber optic cables must be re-laid or fiber optic switches must be added, resulting in poor expansion flexibility.

[0004] Meanwhile, existing wired and wireless communication solutions are insufficient to meet the comprehensive requirements of wind farm environments, which demand long-distance operation, high bandwidth, low cost, easy scalability, and strong resilience. Therefore, how to utilize Mesh self-organizing network technology to build a low-cost, highly reliable wireless data transmission system covering wind farms, and solve the problem of accessing and converting heterogeneous sensor data with multiple protocols, is a technical challenge that urgently needs to be addressed in this field. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this invention is that: laying optical fibers requires trenching, laying pipes, and splicing, which significantly increases the construction and expansion costs for wind farms with many discrete monitoring points; optical fiber lines are prone to aging, wind and sand erosion, and small animals gnawing, and once a fiber breakage occurs, it is difficult to locate the fault point and the repair cycle is long; when new monitoring points are needed, optical fibers must be re-laid or optical fiber switches must be added, resulting in poor expansion flexibility.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a data wireless transmission system based on IoT technology, which includes, The wireless network subsystem consists of wireless mesh nodes, which form a covered wireless mesh network based on a multi-hop ad hoc network. The multi-functional data acquisition and editing subsystem integrates a communication interface to connect to and acquire sensor data from wind turbine generators, and converts the acquired sensor data into a data format that conforms to the wireless Mesh network transmission protocol. The management application subsystem communicates with the multi-functional data acquisition and editing subsystem through a wireless mesh network, receives and processes sensor data in real time, and monitors the operating status of the wireless mesh network.

[0007] In a preferred embodiment of the IoT-based wireless data transmission system described in this invention: The multi-functional data acquisition and editing subsystem includes, The power management unit performs wide-range voltage conversion and regulated output of externally input DC power; The mode switching circuit includes a serial communication interface, the operating mode of which can be configured via a physical DIP switch. An Ethernet switching unit is composed of at least two interconnected Ethernet switching chips; The central processing unit is connected to the power management unit, mode switching circuit, and Ethernet switching unit, respectively, and performs protocol conversion, data encapsulation, and encryption processing between serial port data and Ethernet data.

[0008] In a preferred embodiment of the IoT-based wireless data transmission system described in this invention: The mode switching circuit has an internal mode switching chip that supports multi-mode switching via a serial communication interface. The mode switching chip is electrically connected to the mode configuration circuit, and the mode configuration circuit has a DIP switch installed inside. The DIP switch is connected to the serial communication interface. The mode switching circuit is connected to the serial port isolation protection circuit to isolate the potential difference of the wind farm site and the lightning induced overvoltage.

[0009] In a preferred embodiment of the IoT-based wireless data transmission system described in this invention: The Ethernet switching unit includes a primary Ethernet switching chip and a secondary Ethernet switching chip; The uplink port of the first Ethernet switching chip is connected to the integrated interface of the central processing unit; The expansion port of the first Ethernet switching chip is connected to the cascade port of the second Ethernet switching chip through an interface. The downlink ports of the first Ethernet switching chip and the lower Ethernet switching chip are led to the external connection port of the multi-functional data acquisition and editing subsystem, forming a multi-port network switching matrix.

[0010] In a preferred embodiment of the IoT-based wireless data transmission system described in this invention: The management application subsystem integrates a network monitoring module, a device status display module, and a data integration module; The network monitoring module monitors the connection status of devices in the wireless Mesh network, issues alarm messages, and locates abnormal locations. The device status display module shows devices whose network connection status has changed and generates corresponding log records. The data integration module integrates monitoring signals and displays and manages them in a single user interface.

[0011] A transmission method includes a wireless data transmission system based on IoT technology; and, Network deployment: Deploy wireless mesh nodes and build a wireless mesh network covering the entire wind farm through a multi-hop self-organizing network method; Data acquisition and conversion: The multi-functional data acquisition and editing subsystem converts the acquired signals into network data packets that conform to the wireless Mesh network transmission protocol. Data transmission is achieved through a wireless mesh network, where network data packets are reliably transmitted from the wireless mesh nodes on the wind turbine side to the backbone nodes on the booster station side via a multi-hop relay method. Data management and monitoring: The back-end server on the booster station side receives and processes network data packets, and at the same time monitors and alarms the connection status and communication link quality of each node in the wireless mesh network in real time.

[0012] In a preferred embodiment of the measurement system described in this invention: The data acquisition and conversion process includes end-to-end encryption of the acquired sensor data; The original data is encrypted for the first time on the multi-functional data acquisition and editing subsystem side to generate an encrypted data packet; During wireless mesh network transmission, a second encryption is performed using the mesh network's own AES encryption mechanism. Decryption is performed on the backend server at the booster station to ensure the security of data transmission.

[0013] In a preferred embodiment of the measurement system described in this invention: In the data management and monitoring process, The backend server categorizes and summarizes the received vibration signals, video monitoring signals, and fire early warning signals, and provides a data interface to connect with external management platforms.

[0014] The beneficial effects of this invention are as follows: it reduces the construction and operation and maintenance costs of wind farm communication networks, eliminates the need for trenching and laying optical cables, avoids problems such as easy aging of optical fibers, difficulty in fault location, and inflexible expansion, adopts wireless mesh nodes with multi-radio orthogonal multi-channel design, and optimizes node location and transmission power by combining wireless link calculation methods to achieve full wireless network coverage of the entire wind farm, and integrates a multi-functional data acquisition and editing device with RS232, RS485, RS422 and network ports. The working mode of each serial port can be flexibly configured through DIP switches, supporting up to 18 channels of data transmission at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0016] Figure 1 The system architecture diagram of the present invention is shown.

[0017] Figure 2 The diagram shows the connection architecture of the multifunctional data acquisition and editing subsystem of the present invention.

[0018] Figure 3 The system functional module integration architecture diagram of the present invention is shown.

[0019] Figure 4 The diagram shows the internal module wiring connection of the multifunctional data acquisition and editing subsystem of the present invention.

[0020] Figure 5 The architecture diagram of the management application subsystem of the present invention is shown. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new techniques. Furthermore, specific terms may be chosen independently, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of the invention.

[0023] Reference Figure 1 This embodiment provides a data wireless transmission system based on IoT technology.

[0024] The system includes: a wireless network subsystem 1, a multi-functional data acquisition and editing subsystem 2, and a management application subsystem 3. The wireless network subsystem 1 consists of multiple wireless mesh nodes. In this embodiment, the Huadian Fuqing Niutouwei Wind Farm is used as the application scenario. The first phase of the wind farm has an installed capacity of 30MW and includes 20 wind turbine units. Technicians install a wireless mesh node on the top of the nacelle or the outside of the tower of each wind turbine unit, and simultaneously deploy a backbone node within the substation. These wireless mesh nodes, based on multi-hop ad hoc networking technology, automatically discover neighboring nodes and establish routes, forming a wireless mesh network covering all 20 wind turbine units and the substation.

[0025] The wireless mesh nodes employ a multi-radio orthogonal multi-channel design, with the 2.4GHz band used for control signaling interaction between nodes and the 5.8GHz band used for service data transmission. These two bands operate independently without interference. Under line-of-sight conditions, the single-hop transmission distance between adjacent wind turbine nodes can reach 10km. Through multi-hop relay: Wind turbine A → Wind turbine B → Wind turbine C → Substation, the entire network coverage can be expanded exponentially.

[0026] The multi-functional data acquisition and editing subsystem 2 is deployed on the side of each wind turbine unit, located in the control cabinet or nacelle at the bottom of the wind turbine tower.

[0027] The multi-functional data acquisition and editing subsystem 2 integrates RS485, RS232, and Ethernet interfaces for connecting and acquiring various types of sensor data from the wind turbine. Vibration signals are acquired by vibration acceleration sensors installed on the main bearing, gearbox, and generator. After processing by WindDAU (online vibration data acquisition unit), the signals are connected to the multi-functional data acquisition and editing subsystem 2 via the RS232 interface.

[0028] The video surveillance signal is acquired using a night vision IP camera that supports standard Ethernet communication. It is installed inside the engine compartment to monitor the main equipment such as the wheel hub, main shaft, and generator. The camera is connected to the multi-functional data acquisition and editing subsystem 2 via a network port. Fire warning signals may include temperature and humidity sensors, smoke detectors, and flame detectors. These sensors are connected to the multi-functional data acquisition and editing subsystem 2 via an RS485 interface using the Modbus protocol. The multi-functional data acquisition and editing subsystem 2 converts the collected sensor data into a data format conforming to the wireless Mesh network transmission protocol, ready for transmission.

[0029] The management application subsystem 3 is deployed on the back-end server on the booster station side. The server is connected to the backbone mesh node of the booster station via a wired network, and then communicates with the multi-functional data acquisition and editing subsystem 2 on each wind turbine side via a wireless mesh network.

[0030] The management application subsystem 3 receives and processes sensor data from each wind turbine in real time, including waveform analysis of vibration data, decoding and display of video footage, and determination of fire alarm status. Simultaneously, the management application subsystem 3 monitors and manages the operational status of the wireless mesh network itself, including indicators such as the online status of each node, signal strength, and communication link quality.

[0031] With the above system, wind farms can achieve full wireless network coverage without laying optical fibers, which greatly reduces construction costs and operation and maintenance difficulties.

[0032] As one embodiment provided, such as Figures 1-4 , The multi-functional data acquisition and editing subsystem 2 includes: a power management unit 21, a mode switching circuit 22, an Ethernet switching unit 23, and a central processing unit 24.

[0033] The power management unit 21 is used to perform wide-range voltage conversion and regulated output of externally input DC power. Considering the power supply conditions at the wind farm site, the input voltage range of the power management unit 21 is designed to be 3.6V to 36V, and it is compatible with 12V DC power or 24V DC power.

[0034] The power management unit 21 uses a step-down DC-DC converter with an output voltage of 3.3V for the central processing unit 24 and digital circuits, 5V for the serial transceiver and 1.8V for the Ethernet switching chip core. The maximum drive current of the power management unit 21 can reach 3.5A, which can stably drive all loads.

[0035] The mode switching circuit 22 includes a serial communication interface 221. In this embodiment, the serial communication interface 221 has 6 channels, each of which can be configured to RS232, RS485 or RS422 working modes via a physical DIP switch.

[0036] Specifically, the mode switching circuit 22 internally houses a mode switching chip 222, which supports multi-mode switching of the three serial interface modes mentioned above. The mode switching chip 222 is electrically connected to the mode configuration circuit 223, which internally houses a DIP switch 224.

[0037] The output pins of the DIP switch 224 are connected to the mode selection pins of the mode switching chip 222 respectively. Different level combinations are generated by changing the position of the switch. For example, 00 corresponds to RS232 mode, 01 corresponds to RS485 half-duplex mode, 10 corresponds to RS422 full-duplex mode, and 11 is reserved for backup. The DIP switch 224 is connected to the serial communication interface 221. Each serial port is configured independently and does not interfere with each other.

[0038] The mode switching circuit 22 is also connected to the serial port isolation protection circuit 225. The serial port isolation protection circuit 225 uses an optocoupler isolation device or a magnetic coupler isolation device to electrically isolate the external serial port signal from the internal central processing unit 24, effectively isolating the complex ground potential difference and lightning induced overvoltage of the wind farm.

[0039] The Ethernet switching unit 23 is composed of at least two interconnected Ethernet switching chips 231. In this embodiment, the Ethernet switching unit 23 includes a first Ethernet switching chip 231 and a second Ethernet switching chip 232.

[0040] The uplink port of the first Ethernet switching chip 231 is connected to the integrated interface of the central processing unit 24 via an MII or RMII interface, and the expansion port of the first Ethernet switching chip 231 is connected to the cascading port of the lower Ethernet switching chip 232 via an RMII interface.

[0041] As per the above preset, the first Ethernet switching chip 231 can output four external network ports, and the second Ethernet switching chip 232 can output four more external network ports, thus forming a total of eight downstream 100Mbps Ethernet ports. If more ports are needed, a third switching chip can be cascaded to form 12 or 14 ports. All downstream ports are connected to the external connection port of the multi-functional data acquisition and editing subsystem 2, thus forming a multi-port network switching matrix.

[0042] The central processing unit 24 is connected to the power management unit 21, the mode switching circuit 22, and the Ethernet switching unit 23. The central processing unit 24 can use an ARM Cortex-M series or Cortex-A series processor, and has embedded software built in, which is used to perform protocol conversion, data encapsulation, and encryption processing between serial port data and Ethernet data.

[0043] The central processing unit 24 also integrates a dual-port SRAM (data buffer) to temporarily store data to be forwarded from various serial and network ports, addressing instantaneous bandwidth fluctuations in the wireless mesh network. The central processing unit 24 is equipped with a standard clock unit and a watchdog timer to accurately timestamp the acquired data and automatically reset the data acquisition unit in case of malfunction, improving system reliability.

[0044] The physical enclosure of the multi-functional data acquisition and editing subsystem 2 can be a cast aluminum waterproof enclosure with an IP65 protection rating. Multiple waterproof industrial connectors are set on the outside of the enclosure to correspond to the power input, serial port signal input, network port input and output, external antenna interface for connecting the external antenna of the wireless Mesh module, and grounding terminal for connecting the tower grounding system of the wind turbine, so as to adapt to the harsh environment of wind farms such as high humidity, salt spray, and sandstorms.

[0045] As one embodiment provided, such as Figures 1-5 , The first step is network deployment. Technicians first conduct a site survey of the wind farm, recording the geographical coordinates, altitude, and terrain obstruction of each wind turbine. Based on the free-space transmission loss formula, they calculate the required transmit power for each candidate link.

[0046] Based on on-site electromagnetic interference testing, the node locations and transmission power were corrected, and the final deployment plan was determined: one backbone node was deployed at the booster station, which was equipped with a high-gain directional antenna pointing towards each wind turbine; one ordinary node was deployed on the top of each wind turbine nacelle, equipped with an omnidirectional antenna or sector antenna; when there was no direct line of sight between adjacent wind turbines, the intermediate wind turbine was used as a relay node.

[0047] After all nodes are powered on, they automatically execute the self-organizing network protocol, discover each other, and establish routing tables to form a multi-hop wireless mesh network covering the entire wind farm. The network supports access for at least 255 wireless nodes.

[0048] The second step is data acquisition and conversion. The multi-functional data acquisition and editing subsystem 2, deployed on the wind turbine side, collects various sensor signals. The vibration acceleration sensor converts the vibration signal into an electrical signal, which is then converted from analog to digital by the WindDAU acquisition unit with 24-bit ADC precision and a maximum sampling rate of 128kHz. The converted digital vibration data is then sent to the acquisition and editing unit via an RS232 interface.

[0049] The IP camera automatically captures one image of the cabin interior every half hour and transmits the image data to the acquisition and editing unit via the network port using the RTSP or HTTP protocol. Temperature and humidity sensors, smoke detectors, and flame detectors monitor the environmental status in real time. When the smoke concentration reaches the alarm threshold or the temperature is abnormal, an alarm frame is sent to the multi-functional data acquisition and editing subsystem 2 via the RS485 interface using the Modbus protocol.

[0050] After receiving the aforementioned multi-source heterogeneous data, the multi-functional data acquisition and editing subsystem 2 performs protocol conversion through the central processing unit 24. This converts the Modbus-RTU data received via the serial port into Modbus-TCP format and encapsulates it into Ethernet frames; video stream data is directly encapsulated into Ethernet frames. All data packets are packaged according to the wireless Mesh network transmission protocol. Simultaneously, the original data is encrypted for the first time on the multi-functional data acquisition and editing subsystem 2 side, generating encrypted data packets.

[0051] The third step is data transmission. The encrypted network data packets are sent from the wireless mesh nodes on the wind turbine side. The data packets select the optimal path according to the routing table. If the node and the backbone node of the booster station have direct line-of-sight and single-hop reachability, they are sent directly. If they cannot communicate directly due to terrain obstruction, they are automatically relayed via adjacent wind turbine nodes through multi-hop relay.

[0052] Upon receiving a data packet, each relay node first verifies its integrity, then searches for the next-hop node in the routing table based on the destination address, until the data packet is reliably transmitted to the backbone node on the booster station side. During transmission in the wireless mesh network, a second encryption is performed using the mesh network's own AES hardware encryption mechanism, forming a double layer of protection to effectively prevent data from being intercepted or tampered with in the wireless channel.

[0053] The system's local area network communication rate dynamically adjusts between 6Mbps and 39Mbps, and can automatically select the modulation and coding scheme based on channel quality. Real-world testing shows that the effective throughput of a single 10km link can reach over 15Mbps, fully meeting the requirement for simultaneous transmission of one video screenshot.

[0054] The fourth step is data monitoring and management. The substation-side management application subsystem 3 receives network data packets from each wind turbine, performs Mesh network layer decryption and end-to-end decryption sequentially, and restores the original sensor data. The server categorizes and summarizes the data: vibration data is stored in the vibration database and a trend curve is generated; video images are stored in the image library and labeled with timestamps and wind turbine numbers; and fire alarm data triggers pop-up alarms.

[0055] Meanwhile, the management application subsystem 3 monitors the connection status and communication link quality of each node in the wireless mesh network in real time through ICMP heartbeat packets and HTTP status query interfaces.

[0056] The network monitoring module 31 sends ping packets to each node every 30 seconds. If there is no response after three consecutive timeouts, the node is determined to be offline or the link is interrupted, an alarm message is immediately generated, and the abnormal location is located on the electronic map. The device status display module 32 displays the online status, signal strength, transmission rate, cumulative packet loss rate, and other indicators of all nodes in a list format. When the status of a node changes, a log record is automatically generated, including fields such as timestamp, event type, and device identifier, for subsequent auditing.

[0057] Data Integration Module 33: This module integrates video surveillance footage, fire monitoring point status, and vibration alarm information into a single user interface. Maintenance personnel can view all information on one screen simultaneously without switching between multiple systems. Finally, the backend server provides the categorized and aggregated data externally through standardized interfaces, connecting to the group company's remote diagnostic platform or Digital China Power Management Platform. This provides underlying data support for wind turbine health management, fault early warning, and the construction of digital power plants.

[0058] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A wireless data transmission system based on IoT technology, characterized in that: include, The wireless network subsystem (1) consists of wireless mesh nodes, which form a covered wireless mesh network based on a multi-hop self-organizing network. The multi-functional data acquisition and editing subsystem (2) integrates a communication interface, connects and acquires the sensor data of the wind turbine, and converts the acquired sensor data into a data format that conforms to the wireless Mesh network transmission protocol. The management application subsystem (3) communicates with the multi-functional data acquisition and editing subsystem through the wireless mesh network, receives and processes sensor data in real time, and monitors the operation status of the wireless mesh network.

2. The data wireless transmission system based on IoT technology according to claim 1, characterized in that: The multi-functional data acquisition and editing subsystem (2) includes, The power management unit (21) performs wide voltage conversion and regulated output on the externally input DC power supply; The mode switching circuit (22) includes a serial communication interface (221), which can be configured with a working mode via a physical DIP switch; The Ethernet switching unit (23) is composed of at least two interconnected Ethernet switching chips (231); The central processing unit (24) is connected to the power management unit (21), the mode switching circuit (22), and the Ethernet switching unit (23) respectively, and performs protocol conversion, data encapsulation and encryption processing between serial port data and Ethernet data.

3. The data wireless transmission system based on IoT technology according to claim 2, characterized in that: The mode switching circuit (22) is equipped with a mode switching chip (222) to support multi-mode switching via the serial communication interface (221); The mode switching chip (222) is electrically connected to the mode configuration circuit (223). The mode configuration circuit (223) has a DIP switch (224) installed inside. The DIP switch (224) is connected to the serial communication interface (221). The mode switching circuit (22) is connected to the serial port isolation protection circuit (225) to isolate the potential difference of the wind farm site and the lightning induced overvoltage.

4. The data wireless transmission system based on IoT technology according to claim 3, characterized in that: The Ethernet switching unit (23) includes a first Ethernet switching chip (231) and a second Ethernet switching chip (232). The uplink port of the first Ethernet switching chip (231) is connected to the integrated interface of the central processing unit (24); The expansion port of the first Ethernet switching chip (231) is connected to the cascading port of the second Ethernet switching chip (232) via an interface; The downlink ports of the first Ethernet switching chip (231) and the second Ethernet switching chip (232) are connected to the external connection port of the multi-functional data acquisition and editing subsystem (2) to form a multi-port network switching matrix.

5. The data wireless transmission system based on IoT technology according to any one of claims 1 to 4, characterized in that: The management application subsystem (3) integrates the network monitoring module (31), the device status display module (32), and the data integration module (33). The network monitoring module (31) monitors the connection status of devices in the wireless Mesh network, issues alarm information, and locates abnormal locations; The device status display module (32) displays devices whose network connection status has changed and generates corresponding log records; The data integration module (33) integrates monitoring signals and displays and manages them in the same user interface.

6. A transmission method, characterized in that: The data wireless transmission system based on IoT technology as described in claim 5; and includes the following steps, Network deployment: Deploy wireless mesh nodes and build a wireless mesh network covering the entire wind farm through a multi-hop self-organizing network method; Data acquisition and conversion: using the multi-functional data acquisition and editing subsystem (2), the acquired signals are uniformly converted into network data packets that conform to the wireless Mesh network transmission protocol; Data transmission is achieved through a wireless mesh network, where network data packets are reliably transmitted from the wireless mesh nodes on the wind turbine side to the backbone nodes on the booster station side via a multi-hop relay method. Data management and monitoring: The back-end server on the booster station side receives and processes network data packets, and at the same time monitors and alarms the connection status and communication link quality of each node in the wireless mesh network in real time.

7. The transmission method according to claim 6, characterized in that: The data acquisition and conversion process includes end-to-end encryption of the acquired sensor data; The original data is encrypted for the first time on the side of the multi-functional data acquisition and editing subsystem (2) to generate an encrypted data packet; During wireless mesh network transmission, a second encryption is performed using the mesh network's own AES encryption mechanism. Decryption is performed on the backend server at the booster station to ensure the security of data transmission.

8. The transmission method according to claim 7, characterized in that: In the data management and monitoring process, The backend server categorizes and summarizes the received vibration signals, video monitoring signals, and fire early warning signals, and provides a data interface to connect with external management platforms.

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