Intelligent equipment for intelligent water immersion and external damage monitoring and early warning based on wireless narrowband communication

Abstract

The utility model relates to the technical field of power equipment monitoring and early warning, and provides intelligent equipment for intelligent water immersion and external damage monitoring and early warning based on wireless narrowband communication, and the equipment is mainly composed of a cabinet body, a water level sensing device and an external detection part. The water level sensing device is installed on the side, close to the potential water immersion area, of the cabinet body, and the external detection component is used for monitoring the cabinet deformation condition caused by external force impact in real time. The water level sensing device and the external detection part are both connected with the signal acquisition unit, and the signal acquisition unit is electrically connected with the memory and realizes data transmission with the remote controller through the wireless communication assembly. According to the equipment, the water level sensing device and the external damage detection part are utilized, the wireless communication technology is combined, the remote intelligent monitoring and early warning functions of the switch cabinet are achieved, the manpower inspection cost is effectively reduced, the monitoring efficiency is improved, and the defect that potential problems are difficult to find in time in a traditional inspection mode is overcome.

Description

Technical Field

[0001] This application relates to the technical field of intelligent monitoring and early warning of outdoor power equipment, and in particular to an intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication. Background Technology

[0002] In modern society, the stable operation of the power system is crucial for urban operations and industrial production, and the continuous expansion of the power grid has further exacerbated this demand. In particular, the ever-increasing electricity consumption in urban and industrial areas has made the stability and security of power supply a focus of attention. Among numerous electrical devices, outdoor power switchgear plays an indispensable role, and its safe and reliable operation is a key factor in ensuring the stability of the overall power system.

[0003] However, these outdoor power switchgear cabinets are typically installed outdoors, some even near rivers, facing numerous potential risks. In actual operation, severe weather conditions such as rainfall often cause river levels to rise rapidly, threatening the switchgear. Simultaneously, various construction activities in the surrounding area can also cause accidental damage to the switchgear. Flooding and external damage have become two major factors affecting the normal operation of switchgear, and in severe cases, can even endanger the safety of power distribution equipment, leading to power outages and power failures, causing great inconvenience to people's lives and work, and potentially posing a threat to personal safety.

[0004] Traditional power equipment operation and maintenance mainly relies on periodic manual inspections. This method not only requires a large investment of manpower and is costly, but also has relatively low inspection efficiency. More seriously, due to the limited inspection cycle, it is difficult to detect potential problems during equipment operation in a timely manner, often leading to problems being addressed only after a fault occurs, increasing the risk to power system operation. Utility Model Content

[0005] Based on this, and in order to solve the aforementioned technical problems, this application proposes an intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication.

[0006] This invention provides an intelligent device for monitoring and early warning of water immersion and external damage based on narrowband wireless communication. The device includes a cabinet body, a water level sensor, and an external detection component. The water level sensor is located on the side of the cabinet body closest to the direction in which water immersion may occur. The external detection component is installed at the corners of the cabinet body that are prone to deformation, so as to detect deformation caused by external impacts in real time. The cabinet body is also equipped with a signal acquisition unit, a memory, and a wireless communication component. The water level sensor and the external detection component are both connected to the signal acquisition unit. The signal acquisition unit is electrically connected to the memory and is connected to a remote controller via the wireless communication component.

[0007] Furthermore, the external damage detection component is installed in the middle position of the side wall and / or corner of the cabinet body. The external damage detection component can quickly capture the physical signals generated by external damage and convert them into electrical signals in a timely manner and transmit them to the signal acquisition unit.

[0008] Furthermore, the wireless communication component employs a 370MHz narrowband wireless communicator.

[0009] Furthermore, the external damage detection component consists of a tilt sensor and an acceleration sensor. One tilt sensor paired with one acceleration sensor constitutes a set of external damage detection components. A total of four sets are installed on the cabinet body, and the four sets of external damage detection components are respectively installed at the four corners of the cabinet body to detect damage to the cabinet body in any direction.

[0010] Furthermore, the external damage detection component also includes a strain gauge sensor, which is attached to the cabinet body and used to detect the minute deformation of the cabinet body when subjected to external force. The strain gauge sensor is disposed on the side wall and / or corner of the cabinet body.

[0011] Furthermore, the water level sensing device is installed in a low-lying or easily waterlogged area around the outside of the cabinet body. The water level sensing device includes a static pressure submersible level transmitter and / or a submersible split-type level sensor.

[0012] Furthermore, a camera is also added to the cabinet body. The camera is electrically connected to the signal acquisition unit and transmits on-site images to the signal acquisition unit in real time.

[0013] Furthermore, a humidity sensor is installed inside the cabinet, located close to the electronic components. The humidity sensor is connected to the signal acquisition unit, and monitors the humidity changes inside the cabinet and transmits the data to the signal acquisition unit in real time.

[0014] This application discloses an intelligent device for monitoring and early warning of water immersion and external damage based on narrowband wireless communication. By installing a water level sensor and an external damage detection component on the switchgear and achieving remote connection through wireless communication technology, remote intelligent monitoring of the switchgear is achieved. This device can issue early warnings, effectively reducing the cost of manual inspections, improving monitoring efficiency, and overcoming the shortcomings of traditional inspection methods in timely detection of potential problems. Specifically, the water level sensor is installed on the outside of the switchgear in low-lying or easily flooded areas to monitor water level changes in real time. The external damage detection component consists of a tilt sensor, an acceleration sensor, and a strain gauge sensor, installed at the four corners and side walls of the switchgear, respectively, enabling comprehensive detection of external damage. In addition, the device is equipped with a camera and a humidity sensor, further enhancing the comprehensiveness and accuracy of the monitoring. Attached Figure Description

[0015] Figure 1 This is a structural diagram of an integrated intelligent water immersion and external damage monitoring and early warning device based on wireless narrowband communication disclosed in an embodiment of this utility model;

[0016] Figure 2 This is a diagram showing the state of the water level sensing device in use according to an embodiment of this utility model. Detailed Implementation

[0017] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0018] Combination Figure 1-2As shown in the figure, this utility model discloses an intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication. The device comprises a cabinet body, a water level sensor 21, an external damage detection component, a signal acquisition unit 4, a memory, and wireless communication components, precisely assembled from these key parts. The water level sensor 21 is installed on the outside of the cabinet body, precisely facing the direction where water immersion may occur. It uses a high-precision sensing element, capable of capturing subtle changes in water level in real time and rapidly converting the water level information into an electrical signal. To ensure data reliability, the device is also equipped with a data filtering and calibration system, which can effectively remove noise caused by external interference and correct the data according to the actual installation environment, thereby providing accurate basis for subsequent analysis. The external damage detection component is arranged at the corners of the cabinet body, which are most susceptible to damage from external impacts during daily use. This component integrates a tilt sensor, an acceleration sensor, and a strain gauge sensor, achieving comprehensive monitoring of various forms of external force damage. The tilt sensor, based on the principle of gravity sensing, can sensitively detect changes in the tilt angle of the cabinet; the accelerometer can quickly respond to sudden acceleration changes caused by impact; and the strain gauge sensor determines whether the cabinet is subjected to external forces such as compression or tension by detecting the strain on its surface. These sensors work together to accurately transmit the collected signals to the signal acquisition unit 4. The water level sensor 21 and the external damage detection component are securely connected to the signal acquisition unit 4 via electrical wiring, ensuring that the monitoring data is transmitted without delay or error. The signal acquisition unit 4 not only efficiently collects monitoring data from various sensors but also establishes a stable electrical connection with the memory. The memory has a large storage capacity and fast read / write performance, enabling long-term local storage of monitoring data for easy subsequent review and analysis. The signal acquisition unit 4 establishes a remote communication link with the controller 1 using a wireless communication component. The wireless communication component uses an advanced 370MHz narrowband wireless communicator, which features low power consumption and strong anti-interference capabilities, enabling stable data transmission in complex environments. The controller covers a variety of remote mobile devices such as computers, mobile phones, and tablets. Users can use these devices to obtain real-time information on the operation status of the cabinet anytime and anywhere without being on-site, truly realizing remote intelligent monitoring.

[0019] Once the equipment detects abnormalities such as water immersion or external damage, the system will immediately activate a comprehensive early warning mechanism. The local unit will trigger an audible and visual alarm, emitting a high-decibel alarm and flashing warning lights to attract the attention of on-site personnel. Simultaneously, the remote controller will receive detailed warning information, prompting the user to take appropriate measures in a timely manner. This intelligent monitoring and early warning method significantly reduces the cost of manual inspections, substantially improves monitoring efficiency, and effectively compensates for the shortcomings of traditional inspection methods in terms of timeliness and accuracy, providing strong protection for the safe and stable operation of the enclosure.

[0020] In another embodiment, the external damage detection component mainly consists of a tilt sensor and an accelerometer, which work together to achieve accurate monitoring of external damage. Specifically, each set of external damage detection components comprises one tilt sensor and one accelerometer. This combination allows for the capture of physical signals generated by external damage from different angles and dimensions. A total of four such external damage detection components are installed on the cabinet body, positioned at the four corners of the cabinet. This layout design ensures that external damage to the cabinet can be detected promptly and accurately, regardless of the direction of the impact. The tilt sensor primarily senses changes in the tilt angle of the cabinet under external force, while the accelerometer captures sudden acceleration changes caused by the impact. Their collaborative operation provides comprehensive and reliable protection for the monitoring of external damage to the cabinet.

[0021] The tilt sensor, also known as an inclinometer, operates based on gravity sensing. This sensor contains a sensitive element, such as a pendulum, liquid, or accelerometer. When the switchgear cabinet tilts due to external forces or other factors, the angle of the sensitive element relative to the direction of gravity changes. This angle change is then converted into a corresponding electrical signal and output. Taking an accelerometer-based tilt sensor as an example, it measures the components of acceleration in different directions and calculates the tilt angle of the cabinet using trigonometric functions. However, directly acquired tilt angle data often exhibits instability. This is because minor vibrations in the external environment can cause fluctuations in the angle data. To obtain more accurate and stable tilt angle values, filtering algorithms, such as low-pass filtering, are typically used to process the acquired data and remove high-frequency noise interference. Furthermore, a tilt threshold is pre-set based on the actual installation requirements and safety standards of the switchgear. When the detected tilt angle exceeds this threshold, the system determines that the cabinet is tilting abnormally and immediately triggers a corresponding early warning mechanism to take timely measures to prevent potential equipment failures or safety accidents.

[0022] An accelerometer, also known as an accelerometer sensor, is a device that senses and measures changes in acceleration. When a switch cabinet is impacted by an external force, its internal acceleration changes significantly instantaneously. An accelerometer can sensitively detect this sudden change in acceleration and convert the acceleration signal into an electrical signal output, thus enabling the monitoring of the impact event. There are various types of accelerometers, among which piezoelectric accelerometers and piezoresistive accelerometers are two common forms. Piezoelectric accelerometers operate based on the piezoelectric effect of piezoelectric crystals. When a piezoelectric crystal is subjected to acceleration, it generates a charge signal proportional to the magnitude of the acceleration. This charge signal is processed and converted by subsequent circuitry to obtain an electrical signal output corresponding to the acceleration. Piezoresistive accelerometers, on the other hand, operate based on the piezoresistive effect of semiconductor materials. When acceleration is applied to a piezoresistive accelerometer, the piezoresistive element inside the sensor deforms, causing a change in its resistance value. By measuring and calculating the change in resistance, information related to acceleration can also be obtained. These two types of accelerometers each have their own characteristics. In practical applications, the appropriate type can be selected according to specific monitoring needs and environmental conditions to ensure accurate and reliable monitoring of external impacts on the switchgear.

[0023] Furthermore, the external damage detection component also includes strain gauge sensors, which are carefully installed in the corner areas of the cabinet body. As a high-precision measuring element, the strain gauge sensor possesses excellent sensitivity, enabling it to accurately capture the subtle deformations of the cabinet body when subjected to external impact. When the corners of the cabinet are subjected to external forces such as impact or compression, the strain gauge sensor will deform accordingly, causing a change in its internal resistance. This resistance change is converted and amplified by a signal processing circuit connected to the sensor, ultimately generating an electrical signal output proportional to the applied external force. By acquiring and analyzing these electrical signals, it is possible to accurately determine whether the cabinet body has suffered external damage and the extent of the damage. The strain gauge sensors are installed in the corners of the cabinet body because these areas are typically relatively weak points in the cabinet structure, making them more susceptible to deformation under external forces, thus enabling more effective detection of external damage events. In addition, the strain gauge sensor, with its fast response speed, high measurement accuracy, and compact size, is an ideal choice for monitoring external damage to cabinets. In practical applications, strain gauge sensors work in conjunction with other types of sensors such as tilt sensors and acceleration sensors to form a comprehensive and reliable external damage detection system, providing strong protection for the safe operation of enclosures.

[0024] Specifically, strain gauge sensors are attached to critical parts of the switchgear cabinet (such as impact-prone corners). When the cabinet is impacted and deforms, the strain gauge also deforms. Based on the resistive strain effect of the strain gauge—that is, the change in resistance caused by strain—the deformation of the cabinet is converted into an electrical signal, thereby detecting external impact. The acquired strain signal requires detailed analysis. First, a threshold judgment algorithm is used to set a reasonable strain threshold. When the acquired signal value exceeds this threshold, it is determined that an external impact has occurred. To more accurately determine the severity and direction of the impact, signal feature analysis methods, such as spectral analysis of the strain signal, can be used to obtain the magnitude and direction of deformation, and then determine the energy and direction of the impact.

[0025] Furthermore, the external damage detection component is fixed at the center of the corner of the cabinet body. This layout design helps to more accurately detect the external forces acting on the cabinet body. By installing the external damage detection component in this critical position, it is possible to quickly and accurately capture relevant signals when the cabinet suffers external damage, thereby issuing timely warnings and providing valuable time for taking appropriate protective measures, effectively ensuring the safe operation of the cabinet.

[0026] In another embodiment, the water level sensor 21 is suspended from the side of the cabinet body closest to the direction of water immersion via a suspension bracket 22. The water level sensor 21 is connected to the signal acquisition unit via a junction box 23, which is mounted on the suspension bracket 22. The direction of water immersion referred to here is the direction in which the water level rises.

[0027] The water level sensor 21 is an instrument that can convert the water level parameter of the measured point into a corresponding electrical signal in real time, playing a crucial role in the water level monitoring process. When the water level around the switchgear exceeds the preset safe water level, the water level sensor 21 immediately transmits the detected water level signal to the controller. The computer system within the controller compares and analyzes the actual measured water level signal with the preset water level signal. However, during actual measurement, the collected water level data may be affected by environmental noise, including electromagnetic interference from electrical equipment and fluctuations in surrounding airflow, thus affecting the accuracy of the data. To effectively improve data accuracy, the system employs advanced filtering algorithms to process the collected data. For example, the mean filtering algorithm calculates the average of multiple collected data within a certain time window, effectively removing the interference of random noise. Furthermore, to further ensure the accuracy of the measurement results, the system also compensates and corrects the water level data based on factors such as the installation location of the switchgear and the local geographical environment. The implementation of these measures enables the water level monitoring system to maintain high measurement accuracy in complex and changing environments, providing a reliable guarantee for the safe operation of the switchgear.

[0028] Furthermore, the water level sensing device 2 can be either a static pressure submersible level transmitter or a submersible split-type level sensor. Both types of sensors have their own characteristics, but both can effectively achieve accurate water level measurement. The static pressure submersible level transmitter operates based on the principle that the static pressure of the measured liquid is proportional to the liquid height. Specifically, the static pressure of the liquid is converted into an electrical signal by the sensing element inside the sensor. After processing steps such as temperature compensation and linear correction, it is finally converted into a standard electrical signal output. This process ensures the accuracy and stability of the water level signal, providing a reliable foundation for subsequent data analysis and processing. The submersible split-type level sensor also operates based on the principle that water pressure is proportional to water height. When the water level sensing device is submerged in the liquid to a certain depth, the sensor's liquid-facing surface will experience corresponding pressure. To accurately measure this pressure, the sensor introduces the liquid pressure into the sensor's positive pressure chamber through a stainless steel air-conducting pipe. Simultaneously, the atmospheric pressure above the liquid surface is connected to the sensor's negative pressure chamber, effectively counteracting the atmospheric pressure behind the sensor and ensuring that the pressure value measured by the sensor is determined solely by the liquid depth. By accurately measuring this pressure value, the liquid level can be precisely calculated, enabling real-time monitoring of the water level. This design allows the deployed split-type liquid level sensor to maintain high measurement accuracy even in complex environments, providing strong technical support for water level monitoring.

[0029] Furthermore, a 370MHz narrowband wireless communicator was carefully selected for the wireless communication components. This choice is based on the superior performance of 370MHz narrowband wireless communication technology in terms of low power consumption and long-distance data transmission. Specifically, this technology uses a data acquisition and processing unit to encode and modulate the monitored water immersion and external damage data, and then transmits this data using a 370MHz wireless transmission module. At the receiving end, i.e., the monitoring platform of the back-end maintenance personnel, the wireless receiving module is responsible for receiving these signals and performing demodulation and decoding operations to recover the original monitoring data. The narrowband characteristic of 370MHz narrowband wireless communication technology enables stable data transmission at a lower bandwidth, effectively reducing signal interference and significantly improving communication reliability. In addition, the wireless protocol used in this technology not only supports multi-device access but also has data encryption capabilities, ensuring the security and accuracy of data transmission and providing a solid technical guarantee for remote monitoring.

[0030] In another embodiment, a warning module is also included. When the water immersion or external damage monitoring data exceeds a set warning threshold, the local warning module in the device will be activated. The local warning system mainly uses audible and visual alarms to ensure that on-site personnel can promptly detect abnormalities. Specifically, a buzzer is driven by a control circuit to emit an alarm sound with a sufficiently high intensity, such as above 80 decibels, to ensure that it can attract the attention of nearby personnel even in noisy environments. At the same time, LEDs or warning lights will flash, and the visibility distance of the lights is designed to be relatively long, such as more than 20 meters, so that on-site personnel can clearly see the warning signal even at a greater distance. This combination of audible and visual alarms greatly improves the efficiency of warning information transmission, ensuring that on-site personnel can quickly take appropriate measures in emergency situations, thereby effectively avoiding or reducing potential losses.

[0031] In another embodiment, a camera is added to the cabinet body, and this camera is electrically connected to the signal acquisition unit. When the system receives an early warning signal, monitoring personnel can remotely access the camera to more intuitively assess the situation on-site through real-time video footage. This method effectively avoids wasting manpower due to misjudgment, thereby saving labor costs and improving monitoring efficiency.

[0032] In another embodiment, a humidity sensor is also installed inside the cabinet, positioned close to the electronic components and connected to the signal acquisition unit. The primary function of the humidity sensor is to monitor the humidity inside the switchgear. Since the electronic components are sensitive to humidity levels, the accuracy and anti-interference capabilities of the humidity sensor are crucial. The sensor needs to accurately distinguish between normal humidity ranges and high humidity conditions that could pose a risk of water immersion. Furthermore, to avoid interference from electromagnetic fields and temperature changes within the switchgear, the humidity sensor employs a special anti-interference design to ensure the accuracy and reliability of its measurement results. By monitoring humidity changes in real time, potential water immersion risks can be detected promptly, ensuring the safe operation of the equipment.

[0033] In another embodiment, the memory, as a critical non-volatile computer-readable storage medium, plays a vital role in storing video data and related judgment thresholds. The memory has a rational architecture and clearly defined functional partitions, typically including a program storage area and a data storage area. The program storage area is primarily responsible for storing the operating system and at least one application program required for a given function, ensuring the normal operation of the system and the implementation of its functions. Furthermore, the memory also includes high-speed random access memory for temporary storage and rapid data retrieval, improving system efficiency. Simultaneously, the memory also includes non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device, for long-term storage of important data, ensuring data integrity even in the event of power failure.

[0034] In some specific embodiments, the memory design is more flexible, optionally including memory remotely configured relative to the UAV processor. These remote memories are connected via a network to the system performing UAV cable inspection, enabling remote storage and management of data. Various network connection methods are available, including but not limited to the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof, ensuring the stability and reliability of data transmission.

[0035] In the context of this disclosure, storage media take many forms and can be tangible media capable of containing or storing programs for use by or in connection with an instruction execution system, apparatus, or device. Storage media are broadly categorized and can be machine-readable signal media or machine-readable storage media. Optionally, storage media can be non-transitory computer-readable storage media, such as ROM (Read-Only Memory), Random Access Memory (RAM), and data storage devices. These storage media not only provide a wide range of storage options but also ensure data security and system stability.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, in the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An intelligent device for monitoring and early warning of water immersion and external damage based on narrowband wireless communication, characterized in that: The device includes a cabinet body, a water level sensor, and an external damage detection component. The water level sensor is located on the side of the cabinet body closest to the direction in which water immersion may occur. The external damage detection component is installed at the corners of the cabinet body that are prone to deformation, so as to detect deformation caused by external impacts in real time. The cabinet body is also equipped with a signal acquisition unit, a memory, and a wireless communication component. The water level sensor and the external damage detection component are both connected to the signal acquisition unit, which is electrically connected to the memory and connected to a remote controller via the wireless communication component.

2. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 1, characterized in that: The external damage detection component is installed in the middle position of the side wall and / or corner of the cabinet body. The external damage detection component can quickly capture the physical signals generated by external damage and convert them into electrical signals in a timely manner and transmit them to the signal acquisition unit.

3. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 1, characterized in that: The wireless communication component uses a 370MHz narrowband wireless communicator.

4. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 1, characterized in that: The external damage detection component consists of a tilt sensor and an acceleration sensor. One tilt sensor and one acceleration sensor constitute a set of external damage detection components. A total of four sets are installed on the cabinet body, and the four sets of external damage detection components are installed at the four corners of the cabinet body to detect damage to the cabinet body from any direction.

5. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 4, characterized in that: The external damage detection component also includes a strain gauge sensor, which is attached to the cabinet body and used to detect the minute deformation of the cabinet body when subjected to external force. The strain gauge sensor is disposed on the side wall and / or corner of the cabinet body.

6. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 1, characterized in that: The water level sensing device is installed in the low-lying or easily waterlogged areas around the outside of the cabinet body. The water level sensing device includes a static pressure submersible level transmitter and / or a submersible split-type level sensor.

7. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 1, characterized in that: A camera is also added to the cabinet body. The camera is electrically connected to the signal acquisition unit and transmits on-site images to the signal acquisition unit in real time.

8. The intelligent device for monitoring and early warning of water immersion and external damage based on wireless narrowband communication according to claim 1, characterized in that: A humidity sensor is installed inside the cabinet, located close to the electronic components. The humidity sensor is connected to the signal acquisition unit, and monitors the humidity changes inside the cabinet and transmits the data to the signal acquisition unit in real time.

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