990 results about "Leak detection" patented technology

A system for AI-supported leak detection and localization in water distribution infrastructures, consisting of: a large number of distributed sensor nodes mounted along a water pipe, each sensor node comprising the following: a pressure sensor configured to measure local hydraulic pressure fluctuations within the pipeline with a resolution of at least 0.01 bar; a flow sensor configured to measure the volume flow within the pipeline with an accuracy of at least ±0.5% of the measured value; an acoustic sensor configured to detect vibration signatures caused by leaks in a frequency range between 50 Hz and 20 kHz; an embedded microcontroller with integrated analog-to-digital conversion circuitry for digitizing sensor outputs; a wireless communication module configured to transmit time-synchronized sensor data to a cloud-based processing platform; and a local energy subsystem with a rechargeable battery and an optional circuit for generating photovoltaic energy; the cloud-based processing platform includes an artificial intelligence engine that comprises the following: a data acquisition module configured to receive and decode the transmitted sensor data and to perform time alignment; a supervised learning module that is trained on historical data of flagged leaks and non-leaks to classify incoming sensor patterns; an unsupervised learning module configured to detect anomalies by modeling normal operating baselines of the pipeline; and a topology-aware localization module configured to determine leak coordinates using the topology of the pipeline network, modeling the propagation of hydraulic waves, and estimating the arrival time difference from multi-node acoustic detections; and wherein the system is configured to provide real-time leak alerts and georeferenced visualization via a remote monitoring interface.

The invention discloses an indoor gas leakage monitoring and intelligent joint control system, and belongs to the technical field of intelligent safety monitoring systems. Comprising a sensing layer, a network layer, a control layer and a platform layer, the sensing layer comprises a multi-sensor array and an edge computing node, the multi-sensor array is combined with a catalytic combustion sensor, an infrared sensor, a semiconductor sensor and a temperature and humidity sensor, and sensor data are fused through a weighting algorithm so as to reduce the false alarm rate; a temperature and humidity sensor dynamically adjusts a detection threshold value to adapt to different climate conditions, and an edge computing node is deployed with a lightweight machine learning model. Through multi-sensor data fusion and a weighting algorithm, the false alarm rate is reduced to be smaller than 0.1% per year, environment self-adaptive calibration and AI auxiliary decision making are performed, interference of alcohol, perfume and the like is effectively eliminated, different climate conditions are adapted, leakage judgment is completed at an equipment end through edge calculation, cloud delay is avoided, a multi-stage emergency strategy is provided, and intelligent safe ecology driven by the Internet of Things is constructed.

The invention provides a steel shell concrete interface void detection system and method, and relates to the technical field of civil engineering structure health detection, and the system comprises a mobile scanning unit, an excitation unit, an infrared imaging unit, a signal processing and acquisition unit and a comprehensive analysis terminal. The method comprises the following steps: controlling a mobile scanning unit to carry out step-by-step impact excitation and signal acquisition so as to obtain a frequency diagram, and synchronously sampling by using an infrared thermal imager so as to obtain a thermal analysis diagram; and then binarizing the two images respectively, fusing the two images by adopting a noise suppression algorithm to generate a comprehensive image, and judging that the interface is void according to the fused image. According to the method, the high sensitivity of the impact echo method to the layering defect and the accurate description capability of the infrared thermal imaging method to the defect shape are fused, so that nondestructive, efficient and high-precision detection of the steel shell concrete interface void is realized, and the misjudgment and leak detection risks of a single method are effectively reduced.

The invention discloses an AMC sensor array spatial feature recognition and leakage point detection method based on deep learning, and relates to the technical field of sensors, and the method comprises the steps: carrying out the spatial correlation analysis of a preprocessing result, and extracting a spatial feature signal reflecting the spatial distribution characteristics of gas; decomposing the denoised spatial features by using an empirical mode decomposition algorithm to obtain a plurality of intrinsic mode components, and generating a reconstruction signal based on each intrinsic mode component; performing framing processing on the reconstructed signal by using a framing windowing technology, calculating an energy value and a zero-crossing rate of a corresponding frame based on a framing processing result, constructing a leakage sensing model in combination with the extracted spatial feature signal, and generating a leakage probability distribution sequence; and inputting the time sequence window sequence into a self-encoder, and performing gas leakage point detection in combination with a knowledge distillation mechanism and a comparative analysis technology. According to the invention, accurate extraction and de-noising processing of the spatial feature signals are realized, the signal quality is improved, and the detection precision is further improved.

The invention provides a machining method for improving the yield of a 2K negative pressure aluminum plate-fin heat exchanger. The machining method comprises the steps that a core body is manufactured; manufacturing an end socket; the core body is connected with the end socket to manufacture the heat exchanger; normal-temperature detection is conducted on the heat exchanger; performing low-temperature detection on the heat exchanger; the heat exchanger is subjected to cold shock treatment, and the background leakage rate and the vacuum degree of each heat exchange channel in the heat exchanger and the background leakage rate and the vacuum degree of the sealing device in the cooling process are obtained; and under the condition that the temperature is reduced to the preset temperature threshold value, low-temperature helium mass spectrum leakage detection is conducted on the heat exchanger, after low-temperature helium mass spectrum leakage detection is conducted, secondary vacuumizing is conducted, then third-time vacuumizing is conducted, the circulation is conducted till ith vacuumizing is conducted, and the total leakage rate is calculated, and i is an integer larger than 3. The heat exchanger with the micro leakage rate, high mechanical strength, compact size and high cleanliness can be obtained, and the machining efficiency and the yield are improved.

The invention relates to the technical field of oil pipe leakage detection, in particular to an underground oil pipe leakage detection system, which comprises an underground permanent monitoring unit, which comprises at least one optical fiber sensor, and the optical fiber sensor clings to the outer wall of a production oil pipe or is integrated in an oil pipe coupling and extends along the depth of a whole shaft; the ground signal processing and analyzing unit is in communication connection with the underground permanent monitoring unit; wherein the optical fiber sensor is used as a distributed temperature sensor and a distributed sound wave vibration sensor at the same time, real-time on-line monitoring of oil pipe leakage is achieved, early warning can be given out at the initial stage of leakage, the accuracy of leakage recognition is improved through collaborative analysis of bimodal sensing data, the false alarm situation is effectively reduced, and the reliability of oil pipe leakage detection is improved. A distributed measurement mode provides meter-scale spatial resolution, the depth position of a leakage point is accurately positioned, normal production operation does not need to be interrupted during system operation, and the operation cost of an oil field is reduced.

A coolant leak detection and mitigation system for a rechargeable energy storage system having multiple battery cells arranged in individual battery modules includes a cooling system having a main coolant loop and multiple parallel coolant branches. Each coolant branch adjusts the temperature of one battery module using a portion of coolant from the main coolant loop. The cooling system also has flow-valve(s) for regulating and distributing the coolant from the main coolant loop across the coolant branches. An electronic controller is configured to monitor the cooling system for coolant loss and, in response to an indication of coolant loss, assess each coolant branch for a coolant leak. The controller is also configured to identify a coolant branch having a coolant leak and shut off, via the flow-valve(s), coolant flow into the coolant branch having the coolant leak.

The invention discloses a frequency domain ground penetrating radar pipe leakage detection method and system, and relates to the technical field of pipeline leakage detection, and the method comprises the steps: employing a frequency domain ground penetrating radar to carry out the whole pipe segment detection of a pipeline, and obtaining an original electromagnetic wave signal; preprocessing the original electromagnetic wave signal to obtain an echo signal; extracting time-frequency domain features of the echo signals, and screening the time-frequency domain features; identifying the screened time-frequency domain features by using a leakage identification model to obtain suspected leakage pipe sections; starting a microwave impedance measuring device at the position of the suspected leakage pipe section to obtain a reflection signal; and determining the axial position and the radial position of the leakage point according to the reflection signal. According to the method, the frequency domain ground penetrating radar is adopted for primary screening of the whole pipe section, after the suspected leakage pipe section is recognized, the microwave impedance technology is utilized for fine recognition, the wire for impedance measurement is only arranged in the high-risk pipe section, construction and use convenience is improved, and meanwhile the precision of the detection result is improved.

A method for detecting a leak in a cooling system comprising a plurality of cooling units, a control device and a cooling system are provided. The method comprises adjusting operation of a first cooling unit of the plurality of cooling units. The method further comprises, while the first cooling unit is operating according to the adjusted operation, determining at least one parameter of the first cooling unit and operating at least one other cooling unit of the plurality of cooling units to compensate for the adjusted operation of the first cooling unit. The method further comprises comparing the at least one parameter to a reference value.

The invention discloses a heat exchange station leak detection positioning system based on a pressure fluctuation rule, and particularly relates to the field of monitoring positioning, and the system comprises a dynamic site selection module which is used for determining the position of a detection point through multi-pipeline parameter cooperative matching; the working condition self-adaptive module is used for dynamically adjusting a sampling strategy according to the operation load of the heat exchange station; the leakage screening module is used for establishing a leakage judgment threshold value in combination with historical data and real-time working conditions; the propagation velocity correction module is used for analyzing the propagation velocity of the pressure waves by integrating medium and pipeline characteristics; the double-constraint positioning module is used for realizing leakage point positioning by combining time difference and characteristic value double constraints; the closed-loop verification and correction module is used for verifying a positioning result through theoretical verification and actual measurement to realize digital and intelligent management; through the three-dimensional coupling feature extraction and multi-working-condition threshold value dynamic correction method, the limitation of single parameter judgment is avoided, the leakage judgment accuracy is improved, and a scientific basis is provided for operation and maintenance decision making.

The invention relates to the technical field of fusion reactors, and discloses an assembly tool and an assembly method of a divertor, a box body is positioned and mounted on the assembly tool through a first positioning surface, a second positioning surface and a third positioning surface; through the first reference surface and the second reference surface, a reference coordinate system is set during assembly and detection of the target plate, and the target plate is detected and adjusted by taking the reference coordinate system as a reference, so that the profile tolerance of the target plate conforms to an error allowable range; therefore, it is guaranteed that the divertor obtained through assembling of the assembling tool has enough assembling precision; by the adoption of the assembling tool, the box body is installed on the assembling tool, then the target plate and the box body are preliminarily positioned, a reference coordinate system is established in cooperation with a laser tracker, the actual contour of the target surface of the target plate is obtained, the target plate is correspondingly adjusted, the assembling precision is improved, and normal work of a divertor is effectively guaranteed; and the normal cooling work of the cooling channel can be ensured through the leak detection test.

A leak detection system and method are provided. The system includes: a heater configured to receive a refrigerant from a refrigeration circuit, to heat the refrigerant and to thereby output a first constituent component of the refrigerant in a vapor state and output a second constituent component of the zeotropic refrigerant in a liquid state. Relative mass flows of the first constituent component and the second constituent component may be determined directly or may be inferred from a change in pressure of the refrigerant prior to and after heating or from a liquid level change of the second constituent component in a tank. One or more of the relative mass flows, the change in pressure, and the liquid level change may be compared to a predetermined value, and a refrigeration leak alert may be output based on the comparison.

The utility model discloses an SF6 gas insulated metal-enclosed switchgear intelligent leak detection device, which comprises a host and a plurality of detection parts, the detection parts are in contact with the host through gas pipes, each detection part comprises a gas filter, a gas mold cover and a sealing band, the gas filter is connected to a hand valve switch on the gas mold cover through a gas pipe, and the sealing band is connected to the gas mold cover through a gas pipe. The end part of the gas mold cover is connected with a sealing strap, the sealing strap is bound on the SF6 gas insulated metal-enclosed switchgear, and the gas filter is connected to a host through a gas pipe and is switched on and off in real time by using a hand valve. The SF6 gas-insulated metal-enclosed switchgear leak detection device has the advantages that the detection points are wrapped by the gas mold cover with excellent sealing performance, the detection part is conveniently fixed on the SF6 gas-insulated metal-enclosed switchgear by the sealing bridle, a plurality of leakage points can be detected at the same time, each detection point can be independently controlled, and the leak detection efficiency is high; the gas mold cover can be repeatedly used, the labor intensity is small, installation and operation are convenient, and the maintenance complexity is also reduced.

The disclosure relates to a leak detection system for a pneumatic braking system of a vehicle. The pneumatic braking system has a control unit, a pneumatic circuit, and an air tank configured to supply pneumatic pressure to the pneumatic circuit. The pneumatic circuit has a plurality of valves configured to be individually controlled by the control unit. The link detection system includes program code configured, when executed by a processor, to individually control the valves of the pneumatic circuit so as to isolate a sub-circuit of the pneumatic circuit. The leak detection module is configured to monitor a pressure in the pneumatic circuit for leaks, wherein the leak detection module detects a leak in the sub-circuit if the pressure decreases while the sub-circuit is isolated.

The invention relates to an air tightness detection device and method based on resonance frequency shift of a resonant cavity, belongs to the technical field of air tightness detection, and aims to solve the problems of high equipment cost, complex operation, low efficiency and difficulty in realizing multi-parameter quantitative detection in the traditional air tightness detection technology. High-purity helium with rated pressure is filled into a to-be-detected piece through a gas compressor, the to-be-detected piece is placed in a volume-adjustable detection container after pressure maintaining, and leaked helium is pumped by a vacuum pump to flow into a resonant cavity; resonance frequency deviation caused by helium concentration changes is monitored, temperature and humidity calibration data are combined, three air tightness parameters including the leakage rate (Pa.m / s), the leakage speed (mL / min) and the leakage pressure (Pa) are calculated in real time through a microcontroller, and the air tightness grade of a to-be-detected piece is output according to the air tightness detection standard. According to the device, the volume of the detection container is adaptively adjusted through the sliding rail, and the detection efficiency and adaptability can be remarkably improved by combining frequency mixing excitation and a rapid frequency calibration technology; according to the method, resonance frequency shift-helium concentration-airtightness parameters are converted, and high-precision, multi-parameter and integrated airtightness detection is realized. The invention has the advantages of fast response speed, strong anti-interference performance, low cost and the like, is suitable for fast automatic leak detection of industrial products such as sealing devices, pressure containers and the like, and provides a new scheme for trace gas detection and gas tightness grading.

The invention relates to the technical field of leakage ultrasonic detection, and discloses SF6 gas leakage ultrasonic detection equipment for a GIS pipeline, which comprises a handheld mechanism, a leakage detection mechanism, a switching mechanism and a controller, and is characterized in that the leakage detection mechanism is arranged on the handheld mechanism and comprises a first sensor mounting position and a posture adjusting mechanism; the posture adjusting mechanism is configured to drive the sensor mounted on the first sensor mounting position to perform posture adjustment; the switching mechanism is arranged on the handheld mechanism and comprises a second sensor mounting position; the controller is arranged in the handheld mechanism and is electrically connected with the leak detection mechanism and the switching mechanism; the equipment is at least provided with the ultrasonic micro-leakage fine detection sensor and the ultrasonic global quick scanning sensor, the ultrasonic micro-leakage fine detection sensor and the ultrasonic global quick scanning sensor can be exchanged between the first sensor mounting position of the leakage detection mechanism and the second sensor mounting position of the switching mechanism through the switching mechanism, and the detection efficiency and accuracy are remarkably improved.

The invention provides a gas leakage detection method, device and system and computer equipment, and the method can preliminarily position a potential leakage gas region through detecting a moving target region in an infrared image, further recognize the type of the moving target region, eliminate an interference target region, and finally, determine the leakage gas region. And judging whether the suspicious gas region is a leakage gas region or not only based on the gray data of the suspicious target gas region. The data volume detected only based on the gray data of the suspicious gas region is far lower than the data volume detected based on the whole infrared image, so that the computing power requirement of target detection operation on a hardware platform can be reduced, and whether the region is the leaked gas region is judged only based on the gray data of the suspicious gas region, so that the detection efficiency is improved. And for the detection of the leaked gas area, interference targets are reduced, the real leaked gas area can be more accurately classified from the suspicious gas area, and the false detection rate is reduced.

A battery case leak testing device includes a housing having a testing port. A pump is in fluid communication with the testing port and is configured to generate a prescribed pressure at the testing port. A pressure sensor is in fluid communication with the testing port to measure fluid pressure at the testing port. A controller is in operative communication with the pump and the pressure sensor, and is configured to facilitate operation of the pump in a first mode and a second mode. In the first mode, the pump operates to generate a first prescribed pressure at the testing port. In the second mode, the pump operates to generate a second prescribed pressure at the testing port. The controller transitions the pump from the first mode to the second mode when the pressure sensor measures a prescribed pressure characteristic when the pump is operating in the first mode.

A method and system for detecting the integrity of a high-voltage (HV) battery enclosure. The system uses sensors located within the battery enclosure to generate pressure and temperature sensor data. The system analyzes these data to detect any lack of integrity in the enclosure, such as leaks or breaches, which could compromise the battery's performance and safety. Upon detecting a potential integrity issue, the system generates an alert.

The embodiment of the invention discloses an orientation estimation method, device and system for leakage noise of a water supply network. The method comprises the following steps: acquiring an acoustic signal acquired by a positioning array, wherein the array element spacing of the positioning array is smaller than half-wavelength; the method comprises the following steps of: extracting a main frequency band of each channel signal in an acoustic signal by utilizing power spectral density based on the channel signal acquired by each array element in the acoustic signal; the method includes determining an adaptive dominant frequency band of an acoustic signal based on dominant frequency bands of all channel signals in the acoustic signal. Furthermore, the method includes estimating the orientation of the leakage noise by using a beamforming algorithm based on the acoustic signal and its adaptive dominant frequency band. In this way, according to the embodiment of the invention, the small-aperture array can be used for replacing a leakage listening rod to collect the sound signals of the pipe network, the frequency component with the high signal-to-noise ratio in the self-adaptive main frequency band is screened out from the sound signals, and then high-resolution orientation estimation is achieved through the beam forming algorithm.

Presented are smart testing systems for detecting leaks in electrochemical devices, methods for making / using such testing systems, and memory-stored instructions for automating operation of such systems. A method of detecting a leak in an electrochemical device includes positioning a temperature-controlled (TC) screen with an electrothermal device at a predefined distance from an infrared camera to define therebetween a test envelope. A testing system controller commands the electrothermal device to modify the TC screen's operating temperature to a predefined screen testing temperature. After positioning an electrochemical device in the test envelope, between the TC screen and infrared camera, the infrared camera captures infrared images of the electrochemical device within the test envelope, showing the device's housing located in front of the TC screen. The system controller then analyzes the captured infrared images of the electrochemical device to determine if a gas leak is present in the device housing.

The invention discloses a corrosive liquid pipeline leakage detection and self-repairing device and method, and the device comprises a corrosive liquid pipeline which comprises at least two corrosive liquid pipeline sections; every two adjacent corrosive liquid pipeline sections are fixedly connected through a flange connecting part; the plastic hoop box is installed at the flange connecting part, the lower end of the inner cavity wall is provided with an isolation film to form a closed reagent cavity, aluminum powder and sodium hydroxide are alternately arranged in the reagent cavity, and the isolation film is an oxalate film; the optical fiber temperature measurement system comprises a control trigger subsystem, an optical signal acquisition subsystem, a photoelectric conversion subsystem and an electric signal processing subsystem. The problem that leakage of a corrosive liquid pipeline cannot be found in the first time and emergently handled is solved, leakage points can be self-repaired in the shortest time through automatic judgment, and environmental protection accidents are reduced; and meanwhile, the position of a leakage point can be accurately judged by utilizing an optical fiber temperature sensing system, so that the leakage detection time is shortened, and the leakage detection accuracy is improved.

A vacuum leak detection system may comprise a test chamber unit having a test chamber gas inlet and a test chamber gas outlet, a gas detection unit having a gas detection gas inlet and a gas detection gas outlet, and a gas control unit connecting the test chamber gas inlet and the test chamber gas outlet to the gas detection gas inlet and the gas detection gas outlet, which is connected to the test chamber unit and to the gas detection unit, and which has separate gas line paths for optionally connecting the gas inlets and the gas outlets of the test chamber unit and the gas detection unit, wherein the gas control unit has a third gas inlet which is open towards the atmosphere and which can be connected to the test chamber gas inlet via a gas line path running through the gas control unit.

The invention relates to the technical field of nuclear fusion vacuum, and particularly discloses a leak detection tool suitable for a pipeline welding seam in a vacuum chamber of a fusion device, which comprises a pair of oppositely arranged sealing seats, cavities are formed in the sealing seats, grooves matched with a pipeline are formed in the two ends of each sealing seat, when the two sealing seats are combined, the two cavities jointly form a detection cavity, and the two corresponding grooves jointly form a limiting groove used for restraining the position of the pipeline; wherein the detection cavity is of a sealed structure, and the sealing seat is provided with an air exhaust interface used for being connected with external vacuum equipment so as to be used for vacuumizing the outside of the weld joint of the pipeline to be detected, which is sealed and restrained. Therefore, under the condition of high reduction degree, the detection steps and the detection time efficiency are optimized, and the accuracy and the reliability of the detection result are ensured.

The utility model discloses an air tightness leak detection tool, which belongs to the technical field of air tightness detection, and comprises a detection tool body, an operation platform is fixedly connected to the upper end of the detection tool body, a fixed frame is fixedly connected to the upper end of the operation platform, and four uniformly distributed cylinders are embedded in the upper end of the fixed frame. The upper end of the detection tool body is fixedly connected with four evenly distributed positioning blocks, the positioning blocks are located on the lower side of the pressing block and correspond to the pressing block, a sealing column is arranged between the pressing block and the positioning blocks, a product is arranged in the sealing column, a sensor is fixedly installed at the outer end of the sealing column, and a pressing groove is formed in the bottom end of the pressing block. The bottom end in the pressing groove is fixedly connected with an embedded sealing gasket, the embedded sealing gasket is located on the outer side of the product and makes contact with the product, the product can be placed into the tool to be positioned, a button is started with two hands, and the air cylinder controls the tool to press downwards, so that the air tightness is detected.

The invention discloses an indoor unit refrigerant leak detection control method of a multi-connected air conditioner and related equipment, and can be applied to the technical field of air conditioners. After the indoor units and the outdoor unit are connected through the connecting pipes, the first pressure sensor and the electronic expansion valve are arranged on the first indoor unit connecting pipe of each indoor unit, the second pressure sensor and the electromagnetic valve are arranged on the second indoor unit connecting pipe of each indoor unit, and the refrigerant concentration sensor is arranged in each indoor unit; when the multi-connected air conditioner is in the working process, the real-time refrigerant concentration, detected by the refrigerant concentration sensor, in each indoor unit is obtained, so that manual detection is not needed, the workload of workers is effectively reduced, then the on-off states of the electronic expansion valves and the electromagnetic valves on the corresponding indoor units are controlled according to the first real-time refrigerant concentration, and the on-off states of the electronic expansion valves and the electromagnetic valves on the corresponding indoor units are controlled according to the second real-time refrigerant concentration. And fault analysis is performed on the multi-connected air conditioner by combining the pipeline pressure value detected in real time on the indoor unit to obtain a fault analysis result, so that the working state of the multi-connected air conditioner is controlled, and the user experience is improved.

The invention relates to the technical field of vacuum detection, in particular to a system for quickly judging whether a complex vacuum chamber has vacuum leakage or not. Aiming at the problem of vacuum leak detection, the invention provides the following technical scheme: the judgment system consists of a test vacuum chamber, a background vacuum chamber, a quadrupole mass spectrometer, a vacuum gauge tube and a vacuum unit; the test vacuum chamber is connected with the background vacuum chamber through a corrugated pipe; the vacuum gauge tube and the background vacuum chamber are connected through a CF35 knife edge sealing flange, and the quadrupole mass spectrometer and the background vacuum chamber are connected through a CF35 knife edge sealing flange. According to the invention, the leakage detection requirements of non-standard complex vacuum systems and various high-requirement vacuum systems in the nuclear fusion field at the present stage are met, and non-intrusive, rapid and high-reliability leakage judgment is realized through multi-interface adaptation, high-vacuum stable maintenance, dual precise monitoring and low-leakage-rate sealing design; the method is suitable for batch detection and on-line monitoring of fusion subsystems or engineering occasions with strict requirements for leak detection efficiency and accuracy.

The invention relates to the technical field of a wireless water leakage detection and alarm method used in a building, and discloses a wireless water leakage detection and alarm method and system used in a hidden space in the building. The technical problems that in the prior art, in a complex electromagnetic environment, wireless signal transmission stability is poor, durability of a water leakage sensor is insufficient, and the accurate positioning capacity of a water leakage position is poor are solved. According to the method and system, a distributed water leakage detection unit, a wireless data gateway and a central management platform are included, and accurate positioning of water leakage and intelligent water source identification are achieved. By adopting the technical scheme, the problems of signal robustness and sensor durability can be effectively solved, accurate positioning of water leakage and water source inference are realized, response time is shortened, loss is reduced, and building safety management is improved.

Example methods and systems for leak detection in transformers are disclosed. One example method includes obtaining moisture data of a substance in a power transformer. A functional relationship between relative saturation of moisture of the substance and temperature of the substance is determined based on the moisture data. A gradient of the relative saturation with respect to the temperature of the substance is determined based on the functional relationship. It is determined, based on the gradient, that a leak of moisture of an environment surrounding the power transformer into the power transformer has occurred. In response to determining that the leak has occurred, a visual alert or an audio alert is generated to indicate that the leak has occurred.

The invention relates to the technical field of electrical cabinet monitoring, solves the problems that single-point temperature monitoring is relatively high in leak detection risk, a single sensor is interfered by the environment to cause frequent false alarm and lagged emergency response after a fire breaks out, and particularly relates to an electrical cabinet operation safety monitoring system based on a multi-mode sensor array. The sensor array module is composed of an infrared surface domain temperature sensor, an ultraviolet / infrared composite light sensor and a differential smoke sensor; the edge calculation unit is used for receiving sensor data and executing three-level fire judgment logic; the fire extinguishing execution module comprises a gas spraying system and an aerosol fire extinguishing unit; and the communication module uploads the fire data to an industrial Internet of Things platform. According to the invention, the fire monitoring range and precision are improved, the anti-interference capability is strong, and the response speed is fast.