192 results about "Leakage rate" patented technology

The invention relates to the technical field of valve internal leakage identification, aims to solve the problem of low leakage rate prediction precision in valve internal leakage acoustic emission detection, and discloses a nuclear power valve internal leakage detection method based on acoustic emission signal time-frequency characteristics. Extracting the characteristics of the time domain, the frequency domain and the time-frequency domain of the leakage signal, analyzing the linear relation between the characteristics and the leakage rate of the valve, and predicting the leakage rate and the leakage grade. According to the invention, remote online detection can be carried out on the internal leakage state of the valve, meanwhile, the internal leakage rate of the valve is predicted, the safety of maintenance personnel is guaranteed, the scheme feasibility is high, the measurement is accurate, the applicability is high, the improvement of automation and intelligence levels is facilitated, and good practicability and safety benefits are achieved.

The invention relates to the technical field of compressor control, and particularly discloses a method for controlling a green hydrogen compressor, which comprises the steps of data monitoring and acquisition, basic operation state analysis, mechanical characteristic state analysis, equipment electrical state analysis, sealing lossless state analysis and fault early warning and control optimization. Sealing lossless state coefficients are calculated according to parameters such as dynamic pressure difference, hydrogen dynamic leakage rate, part internal defect area, depth and total crack length at a sealing position and are compared with a reasonable range, so that the states of the compressor in the aspects of sealing performance and part integrity can be accurately judged, the problems of sealing failure and part internal defects can be found in time, and the reliability of the compressor is improved. Treatment such as sealing element replacement can be performed in a targeted manner, and stable operation is guaranteed; and finally, aiming at different conditions of overhigh compression thermal state coefficient, abnormal mechanical acoustic state coefficient and the like, measures of adjusting a pre-cooling device, adjusting the rotating speed of a compressor, adjusting a balance block and the like are respectively adopted, so that faults can be effectively handled, and the correlation coefficient is recovered to be normal.

The invention relates to the technical field of sealing performance testing, in particular to a breather valve performance online testing method for oil and gas storage and transportation, which comprises the following steps: acquiring a vibration signal of a breather valve body, a multi-band acoustic signal of a valve port and a total pressure signal in a storage tank; performing multi-scale complex wavelet decomposition, and constructing a time frequency-energy correlation feature tensor; the total pressure signal and the time frequency-energy correlation characteristic tensor serve as a combined observation value and are input into a preset continuous Gaussian mixture hidden Markov model containing four hidden states of sealing, transient micro-leakage, continuous leakage and full-amount opening, and the posterior probability is calculated; and calculating to obtain a real-time leakage rate. According to the method, the opening pressure can be accurately determined, the real-time leakage rate can be quantitatively calculated after the leakage state is recognized, comprehensive and accurate quantitative online evaluation of core performance parameters of the breather valve is achieved, and the multi-source information fusion degree and the anti-interference capacity are improved.

The embodiment of the invention provides a gas leakage rate determination method and a training method and device of a leakage rate determination model. Electronic equipment can obtain environment information and sound signals; and inputting the sound signal and the environment information into a leakage amount determination model to enable the leakage amount determination model to determine fusion information based on the sound signal and the environment information, removing the noise characteristics from the fusion information to obtain leakage amount characteristics, and determining the gas leakage amount according to the leakage amount characteristics and the environment information. Since the two groups of samples included in the sample pair are collected under the same environmental noise, the difference between the sample noise features corresponding to the two groups of samples is small. By introducing the noise contrast loss and adjusting the parameters of the initial leakage rate determination model according to the direction in which the noise contrast loss is reduced, the trained leakage rate determination model can accurately extract the environmental noise and accurately remove the noise characteristics contained in the fusion information, so that the accuracy of determining the gas leakage rate is improved.

The invention provides a molecular air chamber leakage rate detection method, electronic equipment and a detection system, and the method comprises the steps: testing the spectrum data of a to-be-detected molecular air chamber; calculating the full width at half maximum of the wave spectrum data according to the wave spectrum data; and determining the leak rate of the molecular air chamber to be detected based on the full width at half maximum obtained at multiple times. According to the method, the degree of purity in the molecular air chamber cannot be affected under the condition that the leak rate detection precision of the molecular air chamber is better guaranteed.

The invention relates to the technical field of generator state monitoring, in particular to a leakage detection method and system for an ORC generator set, and the method comprises the steps: firstly, synchronously collecting system key operation parameters and environment concentration data; then, matching the pressure value with a pre-generated and load-divided leakage-free reference model, and calculating a theoretical pressure value and a real-time deviation; and a three-dimensional state judgment matrix is innovatively constructed and applied to perform combined logic judgment on a pressure deviation level and an environment concentration level, so that step-by-step diagnosis from micro-leakage early warning to serious leakage alarm is realized. After the leakage is confirmed, the leakage rate can be estimated, and the possible leakage area can be positioned in an assisted manner. According to the method, early-stage, sensitive, automatic and intelligent detection and diagnosis of leakage of the ORC generator set are realized, and the operation safety and the maintenance efficiency of the set are remarkably improved.

The invention discloses a sealing structure for a test, and an aging test and leakage rate detection method and system. The sealing structure comprises a tested sealing assembly and an air cavity assembly integrated in the tested sealing assembly, and serialized test samples with different filling rates and compression rates are formed by regulating and controlling the groove width and the groove depth of a sealing ring mounting groove so as to simulate various actual sealing states. An aging test adopts a multi-factor coupling accelerated aging method, and a plurality of material characterization means are combined to systematically evaluate the evolution rule of the sealing performance. According to leakage rate detection, static pressure maintaining and dynamic pressure adjusting dual-mode measurement is achieved through an air tightness detector, and the sealing characteristics under different pressure conditions are comprehensively reflected. According to the invention, direct and systematic detection of the leakage rate of the sealing structure is realized, and an innovative solution is provided for sealing performance evaluation and service life prediction of electrical equipment.

The invention provides a crack-containing pipeline failure analysis software system, and belongs to the field of crack-containing pipeline failure evaluation. The system comprises a parameter import module, a random sampling module, a penetration crack length module, a leakage rate module, a failure analysis module and a display module. The parameter import module imports pipeline material parameters, operation environment parameters and the like into the computer; the random sampling module is used for carrying out random sampling according to a common distribution function on the basis of importing parameters; the fatigue crack propagation module is used for calculating a stress intensity factor and fatigue crack propagation; the leakage rate module is used for calculating a detectable leakage length; and the result analysis module is used for integrating all calculation results and input parameters into a failure probability analysis chart. According to the method, the probability fracture mechanics method is adopted, the detection accuracy is improved, and the failure probability of equipment can be evaluated more quickly and visually.

The invention provides a universal assembling and testing method for a bipropellant attitude and orbit control liquid rocket engine. The assembling and testing method provided by the invention comprises 27 process steps, the method specifically comprises the steps of part collection, laser marking, cleaning, assembly assembling, strength testing, engine outer leakage rate detection, electrical performance detection, control valve inner leakage rate detection, mechanical testing, liquid flow testing, pore plate debugging, alcohol replacement, nitrogen purging, vacuum drying, purging, dew point testing, metering, assembling before warehousing, multimedia recording, engine final inspection and warehousing. Wherein the leakage rate detection and the electrical performance test are carried out for multiple times according to specific installation and test requirements. The attitude and orbit control engine assembling and testing method has the advantages that the assembling and testing effect of the attitude and orbit control engine is tested from multiple dimensions, generalization and standardization are achieved, and reliable work of the attitude and orbit control engine can be guaranteed.

The embodiment of the invention provides a liquid leakage detection method and system, a storage medium, an electronic device and a computer program product, and the method comprises the steps: obtaining an infrared image and space mapping information of at least one liquid-cooled cabinet, processing the infrared image through a pre-trained liquid leakage detection model, obtaining a segmentation mask of a leakage region and a non-leakage region, and obtaining the segmentation mask of the leakage region and the non-leakage region; and determining a central physical coordinate of the leakage area according to the segmentation mask, and determining a leakage position according to the space mapping information and the central physical coordinate. According to the technical scheme of the invention, the method can effectively solve the problems in the prior art that the plug-in box level leakage detection of a vertical liquid-cooled cabinet, especially the defects in the aspects of leakage source positioning and the like, achieves the effects of improving the detection precision and response speed under the condition of tiny leakage, and avoids the serious fault of a data center caused by liquid leakage. According to the embodiment of the invention, the leakage reason and the leakage rate can be identified by using deep learning, so that the response speed of operation and maintenance personnel is improved.

The invention provides a water vapor leakage detection system and method, and relates to the technical field of vacuum, the system is used for detecting the water vapor leakage rate of a connector in a vacuum cavity, the connector is physically connected with a plurality of water pipes, and the system comprises a femtosecond laser used for emitting first laser to a first area, the first area comprises the position where the connector is located and the position where the distance between the first area and the connector is smaller than a preset threshold value, and the frequency of the first laser is terahertz; the receiver is used for receiving second laser, and the second laser is the laser after the first laser passes through the first area; the detector is used for determining the water vapor leakage rate of the connector according to the second laser and a feature library, and the feature library comprises mapping between terahertz laser spectral line features and the water vapor leakage rate. The system can detect the leakage of extremely low water vapor under high vacuum, timely discover the leakage, prevent the vacuum degree from being damaged, and guarantee the safety of a vacuum system.

The embodiment of the invention provides a device and a method for detecting the sealing performance of an electrolytic cell. The device comprises an air source, a first air delivery pipe, a second air delivery pipe, a first on-off valve, a second on-off valve, a pressure release valve and an air pressure meter, the first gas conveying pipe and the second gas conveying pipe are communicated with a gas source in parallel, the first gas conveying pipe is used for conveying gas to the electrolytic cell anode, and the second gas conveying pipe is used for conveying gas to the electrolytic cell cathode; the first on-off valve is arranged on the first gas conveying pipe, the second on-off valve is arranged on the second gas conveying pipe, at least one of the first gas conveying pipe and the second gas conveying pipe is provided with a pressure release valve, and at least the other one of the first gas conveying pipe and the second gas conveying pipe is provided with a gas pressure meter; the liquid conveying assembly communicates with the cathode side and / or the anode side of the electrolytic cell and conveys detection liquid to the cathode side and / or the anode side of the electrolytic cell. The detection device provided by the embodiment of the invention not only can measure the internal sealing leakage rate of the electrolytic bath, but also can measure the external sealing leakage rate, enriches the testing function, and is particularly suitable for measuring the internal sealing leakage rate of the alkaline water electrolytic bath.

The invention discloses a low-temperature safety valve leakage detection device based on electrical capacitance tomography, which comprises a liquid nitrogen storage container, a test container, a low-temperature stop valve, a detected low-temperature safety valve, a constant-temperature water bath device, a flow meter, a water tank, a leakage detection pipeline, a capacitance measurement system and a data acquisition and software system, the capacitance measuring system comprises a plurality of groups of copper electrode plates and a processing module, each group of copper electrode plates comprises two copper electrode plates arranged on two opposite side parts of the water tank, and the copper electrode plates are used for capturing bubbles formed by the low-temperature gas in the cavity and acquiring capacitance signals; and the copper electrode plate is electrically connected with the data acquisition and software system through the lead electrode plate connector and the shielding coaxial cable. Insulation supports are arranged between the water tank and the copper electrode plates, the interior of the water tank is divided into a plurality of cavities, and communication gaps are formed between the adjacent cavities. The invention further discloses a low-temperature safety valve leakage detection method based on electrical capacitance tomography. According to the method, the accuracy and comprehensiveness of calculating the leakage rate of the low-temperature gas are improved.

The invention relates to a leak rate detection device and method based on a laser emission resonant cavity. The leak rate detection device comprises a resonant cavity; a laser transmitter; the conversion device is used for converting the photoacoustic signal into an electric signal; and the processing device converts the electrical signal into a leak rate Q. The leakage rate detection method comprises the following steps: setting an acousto-optic resonant frequency f of the resonant cavity; the wavelength of the laser emitted by the laser emitter is modulated, and the modulation frequency is the same as the acousto-optic resonance frequency f; controlling a laser transmitter to transmit modulated laser to an incidence window, and enabling the laser to irradiate the interior of the resonant cavity after passing through the incidence window; the characteristic gas absorbs the laser to generate vibration, and a photoacoustic signal is generated; collecting a photoacoustic signal by using a conversion device, and converting the photoacoustic signal into an electric signal; modulating the electric signal to obtain the oxygen concentration in the resonant cavity; and obtaining the leakage rate Q of the semiconductor cavity according to the oxygen concentration. According to the invention, the leakage condition of the semiconductor chamber can be accurately detected without shutdown.

The invention provides a method for calculating the leakage rate of a rubber sealing layer of a compressed air energy storage cavern, and the method comprises the steps: firstly, arranging infrared temperature detectors at an arch crown and an inverted arch of the cavern in a staggered manner, so as to detect the temperature of the inner surface of the rubber sealing layer, and arranging optical fiber temperature sensors in a crossed manner in the longitudinal direction and the radial direction of the cavern, so as to detect the leakage rate of the rubber sealing layer; through the arrangement mode, the detection range of the infrared temperature detector can cover the inner surface of the rubber sealing layer, and the detection range of the optical fiber temperature sensor can cover the outer surface of the rubber sealing layer. Determining the leakage position of the rubber sealing layer according to the temperature change of the inner and outer surfaces of the rubber sealing layer; finally, high-pressure air is injected into the cavern, the leakage amount and the leakage rate of the rubber sealing layer can be calculated according to a heat conduction formula and temperature detection data at the leakage position, and then the operation efficiency of the air in the cavern in the compressed air energy storage process is evaluated.

The invention relates to a monitoring method and device for the air leakage rate of an air preheater, a storage medium, electronic equipment and a computer program product. The method comprises the following steps: acquiring initial inlet flue gas oxygen content data of at least three measuring points of an inlet flue of the air preheater, initial outlet flue gas oxygen content data of at least three measuring points of an outlet flue of the air preheater and current unit load data in a current scene; in response to the situation that the current scene meets the monitoring condition based on the current unit load data, the initial inlet flue gas oxygen content data and the initial outlet flue gas oxygen content data are determined as effective data; and determining the air leakage rate of the air preheater according to the initial inlet flue gas oxygen content data and the initial outlet flue gas oxygen content data. On the basis of realizing automatic monitoring of the air leakage rate of the air preheater, the monitoring frequency of the air leakage rate of the air preheater is improved, so that the monitoring requirement of the air leakage rate of the air preheater is met.

The rotary four-way arbitrary intercommunication valve comprises a valve body and a valve element, and the valve element extends into the valve body and is in running fit with the valve body. And the valve core is used for switching the communication between any adjacent ports and the communication between the opposite ports every time the valve core rotates by 45 degrees in the valve body through the layered flow channel structure between 0 degree and 180 degrees. The four-way valve is composed of the valve body and the valve element, switching of any two-to-two communication among the four ports is flexibly controlled by rotating the angle of the valve element, mutual communication of the ports with specific flow direction combinations is supported, the function of dynamic random communication of the four ports is achieved, the sealing performance between the valve body and the valve element is improved, and the sealing performance of the valve body and the valve element is improved. The overall structural design is compact and simple, the characteristics of layered flow channels and high sealing performance are achieved, and the leakage rate is greatly reduced. The invention further discloses a rotating method for rotating the four-way arbitrary intercommunication valve.

The utility model relates to the technical field of semiconductor manufacturing, in particular to a chamber leak rate detection device, which is characterized in that a leak rate calibration module is used for acquiring a first leak rate calibration value and a plurality of second leak rate calibration values; the gate valve detection module is used for detecting and generating a state signal of each gate valve; the leakage rate detection module is used for determining a first comparison result of the current oxygen concentration of the first chamber and a first leakage rate calibration value under the condition that each gate valve is closed, and determining a second comparison result of the current oxygen concentration of the first chamber and a target second leakage rate calibration value under the condition that any gate valve is opened; and the alarm module is used for determining leakage conditions of the first chamber and the plurality of second chambers based on the first comparison result and the second comparison result, and generating alarm information, the device can realize real-time monitoring of outer leakage and inner leakage phenomena of the chambers, and ensures chamber safety and process results.

Disclosed in the present invention are a method and system for testing the air tightness of a battery pack, the method comprising: step S1, by means of an upper-computer APP, setting air tightness test parameters comprising a target test air pressure and an allowable leakage rate; step S2, the upper-computer APP generating an inflation policy in light of an air inflow rate per unit time and the target test air pressure, and issuing same to a lower-computer program; step S3, the lower-computer program stepwise inflating a battery pack on the basis of the inflation policy until the battery pack reaches the target test air pressure, and displaying a real-time air pressure value; step S4, the lower-computer program stopping inflating the battery pack, and waiting until the air pressure of the battery pack is stable; step S5, the upper-computer APP acquiring from the lower-computer program the difference between an initial air pressure and a final air pressure during a leakage test time period, calculating a leakage rate per unit time and, on the basis of the allowable leakage rate set in step S1, determining whether the air tightness of the battery pack passes; and step S6, the lower-computer program controlling the battery pack to deflate. The present invention can improve the precision of testing the air tightness of batteries, helping to improve the production quality of the batteries.

The embodiment of the invention provides a parameter space degree of freedom determination method and device, electronic equipment and a storage medium, and the scheme is as follows: according to a first working frequency and a second working frequency corresponding to a first quantum bit and a second quantum bit under the condition that the frequency detuning is 0, and a third working frequency of an adjustable coupler under a preset gate length, determining the degree of freedom of a parameter space; calculating target coupling strength; according to periodic quantum logic gate operations on the first quantum bit and the second quantum bit under different frequency detuning conditions, obtaining a first corresponding relation between frequency detuning and a leakage rate, and obtaining a second corresponding relation between frequency detuning and a preset condition phase; and based on the first corresponding relation and the second corresponding relation, obtaining first detuning and second detuning corresponding to the lowest leakage rate under the target phase as target detuning parameters. According to the technical scheme provided by the embodiment of the invention, the influence of the distortion of the residual short time scale on the magnetic flux control line on the quantum calculation process can be avoided, so that the fidelity of quantum calculation is improved.

A micro-channel membrane for use with high-temperature molten salts used with high-temperature reference electrodes (HTREs). The micro-channel membrane includes a ring having an opening with an opening surface and a plug positioned within the opening with a plug surface. The opening surface and the plug surface contact and interface with each other to form a plurality of micro-channels. The opening surface and the plug surface may be tapered. The opening surface and / or the plug surface may have a surface configuration to facilitate formation of the micro-channels, such as a plurality of facets, a helical channel, a roughened surface, a channel pattern, or a knurled surface pattern. One or more tack welds may secure the plug within the ring. A method for making the micro-channel membrane may include measuring a leak rate through the micro-channels and securing the plug when a target leak rate is measured.

The invention provides a trolley slideway structure for reducing the air leakage rate of a sintering machine, which comprises an equilateral triangle chute arranged in a lower slideway of a trolley, the equilateral triangle chute is 50mm in depth, the inner side inclination angle is 45 degrees, and the outer side is provided with a side hole communicated with a locking mechanism; the right-angle side of the equilateral triangle graphite sealing strip is 48mm, the equilateral triangle graphite sealing strip is made of 0.8-1.0 g / cm < 3 > light graphite, the length is 2m, and the outer side of the equilateral triangle graphite sealing strip is provided with a locking step structure; the diameter of a push rod of the elastic locking mechanism in the middle of the outer side of the chute is 20 mm. When the sintering machine operates, the graphite sealing strip blocks a slideway gap under the atmospheric pressure to realize sealing due to the internal and external pressure difference of the system, and the elastic locking mechanism can avoid excessive abrasion and buffer vibration of the sealing strip. The air leakage rate is effectively reduced, abrasion and vibration influences are relieved, energy conservation, efficiency improvement and cost reduction are achieved, and the method is suitable for the field of sintering machine equipment.

The invention provides a remote monitoring method and system for the running state of a deluge alarm valve group. The method comprises the steps of determining space coordinates and a global diffusion direction vector of a target helium concentration abnormal diffusion region in a sealed cavity based on helium concentration distribution data, and constructing a target composite data frame based on phase characteristics and the helium concentration distribution data; determining a global leakage rate gradient of the target composite data frame in combination with the space coordinates and the global diffusion direction vector, extracting a multiple harmonic distortion amplification quantity when the target composite data frame continuously exceeds a preset reference curve for multiple times, and determining a leakage grade identifier according to the multiple harmonic distortion amplification quantity and the global leakage rate gradient; and generating a linkage instruction containing the leakage grade identifier, the space coordinate and the global diffusion direction vector, and triggering the operation state closed-loop control process of the deluge alarm valve group through the instruction. According to the technical scheme, the linkage instruction is generated after the leakage level is determined, closed-loop control of the deluge alarm valve group is triggered, and accurate leakage response is achieved.

The application discloses a gas chromatograph leakage monitoring method and response system based on dynamic volume balance, comprising the following steps: obtaining the flow measurement value of the carrier gas on the secondary gas circuit, the total flow measurement value of the carrier gas at the sample inlet end of the gas chromatograph, the flow measurement value of the carrier gas at the detector end of the gas chromatograph, and the second correction value of the carrier gas in the pipeline between the secondary gas circuit and the gas chromatograph; obtaining the secondary volume imbalance term based on the dynamic volume balance method; obtaining the to-be-processed data of a frame of time length T flow signal, calculating the second average value based on the to-be-processed data; calculating the second leakage rate between the secondary gas circuit and the gas chromatograph according to the secondary volume imbalance term and the second average value, and judging the leakage condition between the secondary gas circuit and the gas chromatograph based on the second leakage rate. The application can solve the problem of poor sensitivity and accuracy of the leakage condition monitoring of the gas circuit system.

The application provides a molecular gas chamber leakage rate detection method, an electronic device and a detection system. The method can include: testing spectrum data of a to-be-detected molecular gas chamber; calculating a half-height width of the spectrum data according to the spectrum data; and determining a leakage rate of the to-be-detected molecular gas chamber based on the half-height widths obtained at multiple times. In the method, the leakage rate detection accuracy of the molecular gas chamber can be better ensured without affecting the purity in the molecular gas chamber.

The invention belongs to the technical field of circuit breaker hydraulic nitrogen energy storage mechanism oil leakage detection, and particularly relates to a circuit breaker hydraulic nitrogen energy storage mechanism oil leakage detection method and device, and the method comprises the steps: monitoring the oil leakage state of a circuit breaker hydraulic mechanism, and generating a state signal according to the detection information; wherein the state signal comprises an oil leakage signal and a non-leakage signal; based on the oil leakage signals, oil leakage weight information at each moment is collected, and oil leakage time sequence data are formed; according to the method, time sequence data are preprocessed and subjected to stability test, oil leakage time sequence data of a collection period are imported into an autoregressive moving average (ARMA) model, an oil leakage time sequence prediction model is obtained through training, and the weight of leaked oil in a prediction container can be obtained by inputting a prediction time value. Through the oil leakage time sequence prediction model, the oil leakage amount in the future short period can be accurately predicted, the oil leakage rate can be calculated, the defect grade can be judged according to the oil leakage rate subsequently, and defect definition is conducted on the hydraulic nitrogen energy storage mechanism.

The present invention discloses a method for predicting the internal leakage level of a valve based on an acoustic emission signal, which solves the problems in the prior art of being unable to automatically extract valve internal leakage features, as well as the problems of low modeling efficiency and low prediction accuracy. The method comprises: first, collecting the acoustic emission signals of the valve under different internal leakage rates, and performing bandpass filtering preprocessing on the original signals. Then, wavelet scattering transform is used to extract features of the valve internal leakage acoustic emission signal, the second-order scattering coefficient is converted into a two-dimensional feature matrix by averaging in the time dimension, and the ReliefF algorithm is used to extract the optimal scattering coefficient feature. The optimal feature subset and pressure are used as inputs of the classification model, and the AdaBoost.M1 method is used for classification modeling. Finally, the trained AdaBoost.M1 model is used to predict the internal leakage level of the unknown valve internal leakage acoustic emission signal. The present invention realizes the automatic extraction of valve internal leakage features and improves the efficiency and prediction accuracy of valve internal leakage acoustic emission signal modeling.

The invention discloses a pilot operated safety valve state monitoring method and device with helium online leakage detection, and relates to the technical field of industrial process safety and equipment state monitoring, and the method comprises the steps: installing a microcavity leakage collection module on a to-be-detected pilot operated safety valve, connecting a helium online analysis subsystem and a tracing gas source through a pipeline, and carrying out the detection of the helium online leakage detection of the to-be-detected pilot operated safety valve; starting a vacuum pump set to vacuumize to a working vacuum degree; pure nitrogen is introduced to eliminate background helium, sampling analysis is performed after an interface is closed, and a helium background signal is recorded as a base line; low-concentration helium mixed gas is injected at a controlled speed, a tracing environment is constructed, and helium concentration, pressure and temperature multi-dimensional time sequence data are synchronously collected and preprocessed; inputting the data into a composite artificial intelligence model to judge a leakage state and divide alarm grades; the leakage rate is analyzed, the remaining life is calculated, monitoring information is uploaded to an upper-layer system, multi-channel notification is triggered, and monitoring is completed. Through the helium mass spectrum and the edge AI technology, accurate real-time monitoring is achieved, and the problem of off-line lag misinformation is solved.

The present invention discloses a method for predicting the airtight failure time of a micro-nano sensor package. The method comprises the following steps: determining the leakage rate of the micro-nano sensor at different times and establishing a functional relationship between the leakage rate and time; then establishing a prediction model based on the functional relationship and the internal volume of a packaging cavity of the micro-nano sensor, and determining the changing relationship between the pressure in the packaging cavity and time according to the prediction model; then predicting the airtight failure time of the package based on the changing relationship and the failure threshold of the packaging cavity pressure, thereby realizing the prediction of the airtight failure time of the micro-nano sensor and the reliability prediction of the airtight packaging of the micro-nano sensor, which only requires a small amount of data acquisition, and effectively reduces the time required for the prediction.