WO2021136450A1 - Procédé et appareil de traçabilité de fuite pour une substance volatile d'intérieur - Google Patents

Procédé et appareil de traçabilité de fuite pour une substance volatile d'intérieur Download PDF

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WO2021136450A1
WO2021136450A1 PCT/CN2020/141788 CN2020141788W WO2021136450A1 WO 2021136450 A1 WO2021136450 A1 WO 2021136450A1 CN 2020141788 W CN2020141788 W CN 2020141788W WO 2021136450 A1 WO2021136450 A1 WO 2021136450A1
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component
point
leakage
time
concentration
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PCT/CN2020/141788
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English (en)
Chinese (zh)
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周成龙
陈涛
陈雷
袁宏永
苏国锋
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北京辰安科技股份有限公司
清华大学
北京维禹特科技发展有限公司
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Publication of WO2021136450A1 publication Critical patent/WO2021136450A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
    • G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means
    • G01N33/0065—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means using more than one threshold
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—Specially adapted to detect a particular component
    • G01N33/0047—Specially adapted to detect a particular component for organic compounds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0073—Control unit therefor
    • G01N33/0075—Control unit therefor for multiple spatially distributed sensors, e.g. for environmental monitoring

Definitions

  • the present disclosure relates to the field of data processing technology, and in particular to a method and device for leaking and tracing indoor volatile substances.
  • the leak detection method for indoor volatile substances is to use the leak detection and repair technology (Leak Detection And Repair, LDAR) proposed by the U.S. Environmental Protection Agency to detect and obtain leak points.
  • LDAR leak detection and repair technology
  • the above method has the following two shortcomings: one is that it is difficult to find leakage problems in time by adopting a regular detection method; the other is that it is necessary to manually carry a detection instrument to inspect potential leaks, which has high labor costs and poor detection efficiency.
  • the present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.
  • the first purpose of the present disclosure is to propose a method for tracing indoor volatile substances leakage, which is used to solve the problems of difficulty in detecting leakage in time, high labor cost, and poor detection efficiency in the prior art.
  • the second purpose of the present disclosure is to provide a leak source tracing device for indoor volatile substances.
  • the third purpose of the present disclosure is to propose an electronic device.
  • the fourth objective of the present disclosure is to provide a computer-readable storage medium.
  • the first aspect of the present disclosure provides a method for tracing indoor volatile substances leakage, including: obtaining volatile substance information at various indoor monitoring points, and the volatile substance information includes: The concentration information of at least one component at each collection time point; for each monitoring point, the concentration increase time period of the at least one component is determined according to the volatile substance information of the monitoring point; the concentration increase time period is The time period that meets the preset rising condition; for each component in the at least one component, the time vector sequence and amplitude vector corresponding to each component are determined according to the concentration rising time period of the component at each monitoring point Sequence; the time vector sequence is a sequence obtained by sorting the monitoring points in ascending order according to the starting time point of the concentration increase time period; the amplitude vector sequence is the detection of each detection point according to the concentration information in the concentration increase time period Point sequence obtained by sorting in descending order; according to the time vector sequence and amplitude vector sequence corresponding to the component, it is determined whether the component has leakage and the leakage point and the leakage
  • the volatile substance information of each monitoring point in the room is obtained.
  • the volatile substance information includes: the concentration information of at least one component of the volatile substance at each collection time point; According to the volatile substance information of the monitoring points, determine the concentration increase time period of at least one component; the concentration increase time period is the time period that meets the preset increase condition; for each component in at least one component, Determine the time vector sequence and amplitude vector sequence corresponding to each component according to the concentration increase time period of each component at each monitoring point; the time vector sequence is to sort the monitoring points in ascending order according to the starting time point of the concentration increase time period The obtained sequence; the amplitude vector sequence is the sequence obtained by sorting the detection points in descending order according to the concentration information in the time period of concentration increase; according to the time vector sequence and amplitude vector sequence corresponding to the component, determine whether the component has leakage and the component
  • the leakage point and time point of the leakage can be avoided, so as to avoid manual participation, reduce labor costs, and can
  • an embodiment of the second aspect of the present disclosure proposes an indoor volatile substance leakage traceability device, including: an acquisition module for acquiring volatile substance information at various indoor monitoring points, where the volatile substance information includes : The concentration information of at least one component of the volatile substance at each collection time point; the first determining module is configured to determine the concentration increase of the at least one component according to the volatile substance information of the monitoring point for each monitoring point High time period; the concentration increase time period is a time period that satisfies the preset increase condition; the second determination module is used for each component in the at least one component, according to the component at each monitoring point Concentration rise time period, determine the time vector sequence and amplitude vector sequence corresponding to each component; the time vector sequence is a sequence obtained by sorting each monitoring point in ascending order according to the starting time point of the concentration rise time period; The amplitude vector sequence is a sequence obtained by sorting the detection points in descending order according to the concentration information in the concentration increase time period; the third determining module is used to determine the time vector
  • the indoor volatile substance leakage traceability device of the embodiment of the present disclosure obtains the volatile substance information of each monitoring point in the room.
  • the volatile substance information includes: the concentration information of at least one component of the volatile substance at each collection time point; According to the volatile substance information of the monitoring points, determine the concentration increase time period of at least one component; the concentration increase time period is the time period that meets the preset increase condition; for each component in at least one component, Determine the time vector sequence and amplitude vector sequence corresponding to each component according to the concentration increase time period of each component at each monitoring point; the time vector sequence is to sort the monitoring points in ascending order according to the starting time point of the concentration increase time period The obtained sequence; the amplitude vector sequence is the sequence obtained by sorting the detection points in descending order according to the concentration information in the time period of concentration increase; according to the time vector sequence and amplitude vector sequence corresponding to the component, determine whether the component has leakage and the component
  • the leakage point and time point of the leakage can be avoided, so as to avoid manual participation, reduce labor costs
  • an embodiment of the third aspect of the present disclosure proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and capable of running on the processor.
  • the processor executes the program, To achieve the above-mentioned indoor volatile substance leakage traceability method.
  • an embodiment of the fourth aspect of the present disclosure proposes a computer-readable storage medium on which a computer program is stored.
  • the program is executed by a processor, the indoor volatile substance leakage traceability method as described above is realized.
  • FIG. 1 is a schematic flowchart of a method for tracing the source of leakage of indoor volatile substances according to an embodiment of the present disclosure
  • Figure 2 is a schematic diagram of a concentration curve corresponding to at least one component
  • Figure 3 is a schematic diagram of the comparison between the concentration curve after noise reduction and moving average filtering processing and the concentration curve before processing;
  • Figure 4 is a schematic diagram of the comparison between the concentration curve of the isomers before the merging and the concentration curve of the isomers after the merging;
  • Figure 5 is a schematic diagram of the time period of concentration increase
  • FIG. 6 is a schematic flowchart of another method for tracing the source of leakage of indoor volatile substances provided by an embodiment of the present disclosure
  • FIG. 7 is a schematic flow chart of another leak traceability method for indoor volatile substances provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of an indoor volatile substance leakage traceability device provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of the disclosure.
  • FIG. 1 is a schematic flow chart of a method for tracing the source of leakage of indoor volatile substances provided by an embodiment of the present disclosure. As shown in Figure 1, it mainly includes the following steps:
  • the indoor volatile substance leakage traceability method provided in the present disclosure is executed by an indoor volatile substance leakage traceability device.
  • the indoor volatile substance leakage traceability device may specifically be a hardware device or software installed in the hardware device.
  • the hardware device may be, for example, a terminal device, a server, and the like.
  • volatile substances are, for example, benzene, toluene, carbon five or pentane and the like.
  • the volatile substance information of each monitoring point is collected by a mass spectrometer.
  • volatile substance information collected by the mass spectrometer due to the measurement problems of the mass spectrometer itself and the characteristics of indoor leakage, the volatile substance concentration information measured in the pump room and other indoor spaces will show discrete points, oscillations, and the same differentiation. Problems such as incorrect separation of the structure.
  • the process of performing step 101 by the indoor volatile substance leakage traceability device may specifically be to obtain the volatile substance information collected by the mass spectrometer at each monitoring point in the room; according to the concentration of at least one component of the volatile substance at each collection time point Information, generate a concentration curve corresponding to at least one component; perform noise reduction, moving average filtering, and isomer merging on the concentration curve corresponding to at least one component to obtain volatile substance information at each monitoring point.
  • the schematic diagram of the concentration curve corresponding to at least one component may be as shown in FIG. 2.
  • the concentration curve is also referred to as a concentration signal.
  • the noise reduction is the signal average noise reduction of the concentration signal.
  • a segment of mass spectrometer concentration signal I its average value is The standard deviation is ⁇ , and the noise reduction benchmark is set to S dn to determine whether the concentration value at each moment is within If it exceeds this range, set the point to the corresponding evaluation standard range threshold.
  • the original value V of each point of the concentration signal I is Vdn obtained after noise reduction processing.
  • the moving average filter can be regarded as the average value of the value of the variable in the past period of time. Compared with the direct assignment of the variable, the value obtained by the moving average is smoother on the image, and the jitter is less. A certain abnormal value makes the moving average fluctuate greatly. It has a good inhibitory effect on periodic interference, has high smoothness, and is suitable for high-frequency oscillation systems.
  • FIG. 3 it is a schematic diagram of the comparison between the concentration curve after the noise reduction and the moving average filtering process and the concentration curve before the process. Among them, the curve with large fluctuation is the concentration curve before treatment, and the curve with small fluctuation is the concentration curve after treatment.
  • the present disclosure combines the concentration signals of the isomers to eliminate the interference caused by the separation error of the group of isomers.
  • Figure 4 it is a schematic diagram of the comparison of the concentration curve of the isomers before the merging and the concentration curve of the isomers after the merging. Among them, the curve at the top of FIG. 4 is the concentration curve after the isomers are combined; the two curves at the bottom of FIG. 4 are the concentration curves before the isomers are combined.
  • the concentration increase time period is a time period that meets a preset increase condition.
  • the preset increase condition may be that the number of time points in which the concentration information continuously rises is greater than or equal to the first number threshold, and the number of time points in which the concentration information continues to fall is less than or equal to the second number threshold, and the increment of the concentration information is greater than The time period equal to the first incremental threshold.
  • the first number threshold is greater than the second number threshold.
  • the concentration information of the adjacent monitoring points gradually rises, and the rising process is a continuous oscillating rise. Therefore, when determining the time period for the concentration increase, it is necessary to clarify the number and size of the time points of the continuous increase and to be fault-tolerant for the falling phase of the shock. For example, use Represents the concentration information of component n at the i-th monitoring point at time m, Indicates a period of time during which the concentration of component n at the i-th monitoring point increases at time m.
  • T s represents the initial rise time period
  • T e represents a rise time period end point
  • S n represents a first threshold number
  • S m represents a second threshold number
  • S a represents a first increment threshold
  • the process of performing step 102 for the leakage traceability of indoor volatile substances may specifically be: for each component of each monitoring point, obtaining the concentration information of the component at any two adjacent collection time points; adjacent;
  • the collection time points include: the first collection time point and the second collection time point, the first collection time point is less than the second collection time point; the difference between the concentration information at the second collection time point and the concentration information at the first collection time point When it is greater than 0, the second collection time point is marked incrementally; when the difference between the concentration information at the second collection time point and the concentration information at the first collection time point is less than or equal to 0, the second collection time point is decremented Mark, generate the mark sequence corresponding to the component; judge whether there is a continuous first number of incremental marks in the incremental mark sequence; when there is a continuous first number of incremental marks in the incremental mark sequence, the first number will be consecutive
  • the time point of the first increment mark in the threshold increment mark is determined as the start time point of the concentration increase time period; after the start time point in the increment mark
  • the time point of the last mark at the end of the increment mark sequence is determined as the end time point.
  • not every component has a time period for increasing the concentration.
  • the time period for the concentration increase of a certain component is not determined, it is determined that the component has not leaked, and there is no need to trace the source.
  • each component in at least one component determine the time vector sequence and the amplitude vector sequence corresponding to each component according to the concentration increase time period of the component at each monitoring point; the time vector sequence is according to the concentration increase time period The sequence is obtained by sorting each monitoring point in ascending order at the starting time point; the amplitude vector sequence is a sequence obtained by sorting each detection point in descending order according to the concentration information in the concentration increase time period.
  • step 103 the process of executing step 103 by the indoor volatile substance leakage traceability device can be specifically referred to FIG. 6, including the following steps:
  • the preset clustering algorithm may be, for example, the K-means algorithm.
  • the earliest concentration increase time period at the initial time point is selected as the concentration increase time period of the component at the monitoring point.
  • step 103 may also include the following steps: in each cluster, for each component, determine whether the component meets the leak traceability condition; the leak traceability condition is the concentration of the component in the cluster The number of monitoring points in the rising time period is greater than the third number threshold; the third number threshold is determined according to the number of potential leak points and the threshold of the number of leak traceability monitoring points; if the component meets the leak traceability condition, it is determined that the component needs to be leak traced and obtained The time vector sequence and amplitude vector sequence corresponding to the component; if the component does not meet the leakage traceability condition, it is determined that the leakage traceability operation is not required for the component, and the time vector sequence and amplitude vector sequence corresponding to the component are stopped.
  • each cluster sort the monitoring points according to the starting time point of the concentration increase period and the increase in concentration information to obtain the time vector sequence and the amplitude vector sequence corresponding to the component.
  • the volatile substance information of each monitoring point in the room is obtained.
  • the volatile substance information includes: the concentration information of at least one component of the volatile substance at each collection time point; According to the volatile substance information of the monitoring points, determine the concentration increase time period of at least one component; the concentration increase time period is the time period that meets the preset increase condition; for each component in at least one component, Determine the time vector sequence and amplitude vector sequence corresponding to each component according to the concentration increase time period of each component at each monitoring point; the time vector sequence is to sort the monitoring points in ascending order according to the starting time point of the concentration increase time period The obtained sequence; the amplitude vector sequence is the sequence obtained by sorting the detection points in descending order according to the concentration information in the time period of concentration increase; according to the time vector sequence and amplitude vector sequence corresponding to the component, determine whether the component has leakage and the component
  • the leakage point and time point of the leakage can be avoided, so as to avoid manual participation, reduce labor costs, and can
  • FIG. 7 is a schematic flow chart of another method for tracing the source of leakage of indoor volatile substances provided by an embodiment of the present disclosure. As shown in FIG. 7, based on the embodiment shown in FIG. 1, step 104 may further include the following steps:
  • the leakage database includes: a time reference vector sequence and an amplitude reference vector sequence when each component leaks at each leak point.
  • the indoor monitoring point is at a fixed location
  • multiple leaks at the same location show that the concentration data collected at the monitoring point have common characteristics.
  • This common feature is specifically manifested in the time sequence and amplitude of the increase in the component concentration signal of the volatile substance at each monitoring point. If a common feature is obtained as a reference feature for comparison, then the features obtained after the information processing of the measured volatile substances can be compared with the reference features of each leakage situation, and the leakage situation that is the closest to the two has the greatest probability of leakage.
  • the present disclosure can perform three-dimensional modeling of the indoor pump room area, detailed description of the geometric structure where the leak is located; perform calculation grid division on the three-dimensional model; simulate the leakage of each leak point; The simulation results are processed to obtain the concentration signal curves of the volatile substances at each monitoring point under various leakage situations.
  • the time and amplitude of the concentration rise caused by the leakage are extracted, after sorting, the time reference vector sequence and the amplitude reference vector sequence of each monitoring point after the leak occurs are obtained, and stored in Leak in the database.
  • the process of performing step 1042 by the indoor volatile substance leakage traceability device may specifically be to determine the leakage point according to the time reference vector sequence of the leakage point and the time vector sequence of the composition for each leakage point of the composition in the leakage database
  • the first leakage probability of the leakage point; the second leakage probability of the leakage point is determined according to the amplitude reference vector sequence of the leakage point and the amplitude vector sequence of the component; the weighted sum of the first leakage probability and the second leakage probability is performed to determine that the component is in The leak probability of the leak point.
  • the calculation method of the first leakage probability and the second leakage probability is any one of the following methods, or a weighted sum of calculation results of multiple methods: Euclidean distance calculation, vector included angle cosine degree calculation.
  • the leak in the component database at time i-th reference vector sequence with a leak V i (vi1, vi2, ... vin )
  • the calculation formula of the first leakage probability can be as shown in the following formulas (1) to (4).
  • p di represents the Euclidean distance between the time reference vector sequence of the component at the ith leak point and the time vector sequence of the component
  • p ⁇ i represents the time reference vector sequence of the component at the ith leak point and the time vector sequence of the component
  • the calculated value of the cosine degree of the angle between the vectors. Perform a weighted summation or average of p di and p ⁇ i to obtain the first leakage probability.
  • the calculation method of the second leakage probability can refer to the calculation method of the first leakage probability, replace the time vector sequence in the calculation method of the first leakage probability with the amplitude vector sequence, and replace the value in the calculation method of the first leakage probability.
  • the time reference vector sequence is replaced with the amplitude reference vector sequence.
  • the increase in concentration information of each monitoring point may be inconsistent at different stages of leakage, and the rising sequence is relatively fixed, a greater weight can be given to the first leakage probability, which is set to 0.7 by default.
  • the process of performing step 1043 by the indoor volatile substance leakage traceability device may specifically be: sorting the leakage points according to the leakage probability of the components at each leakage point; the predetermined number of leakage points in the prior order When the leakage probability is greater than the preset probability threshold, it is determined that the component has a leakage, and the preset number of leakage points ranked first are determined as the leakage points of the component.
  • the volatile substance information of each monitoring point in the room is obtained.
  • the volatile substance information includes: the concentration information of at least one component of the volatile substance at each collection time point; According to the volatile substance information of the monitoring points, determine the concentration increase time period of at least one component; the concentration increase time period is the time period that meets the preset increase condition; for each component in at least one component, Determine the time vector sequence and amplitude vector sequence corresponding to each component according to the concentration increase time period of each component at each monitoring point; the time vector sequence is to sort the monitoring points in ascending order according to the starting time point of the concentration increase time period The obtained sequence; the amplitude vector sequence is the sequence obtained by sorting the detection points in descending order according to the concentration information in the time period of the concentration increase; the leakage database is obtained, and the leakage database includes: the time reference of each component when each leakage point leaks Vector sequence and amplitude reference vector sequence; according to the time vector sequence and amplitude vector sequence corresponding to the component,
  • the concentration of the component at the first monitoring point in the corresponding time vector sequence is increased for the time period
  • the starting time point of the component is determined as the leakage time point of the component, so that manual participation can be avoided, labor costs can be reduced, and leakage problems can be detected and traced in time to improve detection efficiency.
  • FIG. 8 is a schematic structural diagram of an indoor volatile substance leakage source tracing device provided by an embodiment of the disclosure. As shown in FIG. 8, it includes: an acquiring module 81, a first determining module 82, a second determining module 83 and a third determining module 84.
  • the obtaining module 81 is configured to obtain volatile substance information at various monitoring points in the room, where the volatile substance information includes: concentration information of at least one component of the volatile substance at each collection time point;
  • the first determining module 82 is configured to determine, for each monitoring point, a time period for increasing the concentration of the at least one component according to the volatile substance information of the monitoring point; the time period for increasing the concentration is to satisfy a preset increase Time period of high conditions;
  • the second determining module 83 is configured to determine the time vector sequence and the amplitude vector sequence corresponding to each component according to the concentration increase time period of the component at each monitoring point for each component in the at least one component;
  • the time vector sequence is a sequence obtained by sorting each monitoring point in ascending order according to the starting time point of the concentration increase time period;
  • the amplitude vector sequence is a sequence of the detection points according to the concentration information in the concentration increase time period.
  • the third determining module 84 is configured to determine whether the component has leakage and the leakage point and the leakage time point of the component according to the time vector sequence and the amplitude vector sequence corresponding to the component.
  • the preset rising condition is that the number of time points in which the concentration information continuously rises is greater than or equal to the first number threshold, and the number of time points in which the concentration information continuously falls is less than or equal to the second number threshold, and the concentration The time period in which the increment of information is greater than the first increment threshold.
  • the first determining module 82 is specifically configured to obtain, for each component of each monitoring point, the concentration information of the component at any two adjacent collection time points;
  • the collection time point includes: a first collection time point and a second collection time point, where the first collection time point is less than the second collection time point;
  • the second collection time point When the difference between the concentration information at the second collection time point and the concentration information at the first collection time point is greater than 0, the second collection time point is incrementally marked; at the second collection time point When the difference between the concentration information at the first collection time point and the concentration information at the first collection time point is less than or equal to 0, decrement marking is performed on the second collection time point to generate a marking sequence corresponding to the component;
  • the time point of the first increment mark in the consecutive first number threshold increment marks is determined as the beginning of the concentration increase time period.
  • the time point of the last decrement marker in the second continuous number of threshold decrement markers is determined as the concentration The end time point of the rising time period
  • the determined concentration increase time period is used as the component Concentration rise time period.
  • the second determining module 83 is specifically configured to perform clustering of the concentration increase time period of each component of each monitoring point in combination with the preset clustering algorithm and the starting time point to obtain multiple Clusters; the number of the clusters is the number of time periods during which the maximum concentration of each component in the volatile substance information of each monitoring point increases;
  • the earliest concentration increase time period at the initial time point is selected as the concentration increase time period of the component at the monitoring point;
  • the monitoring points are sorted according to the starting time point of the concentration increase time period and the increase in concentration information to obtain the time vector sequence and the amplitude vector sequence corresponding to the component.
  • the second determining module 83 is also specifically configured to determine whether the component satisfies the leak traceability condition for each component in each cluster;
  • the leak traceability condition is: The number of monitoring points in the time period during which the concentration of the component is increased is greater than a third number threshold; the third number threshold is determined according to the number of potential leak points and the threshold value of the number of leak traceability monitoring points;
  • the component If the component satisfies the leak traceability condition, it is determined that a leak traceability operation is required for the component, and the time vector sequence and the amplitude vector sequence corresponding to the component are obtained;
  • the leakage traceability operation is not required for the component, and the acquisition of the time vector sequence and the amplitude vector sequence corresponding to the component is stopped.
  • the third determining module 84 is specifically configured to obtain a leakage database, the leakage database including: a time reference vector sequence and an amplitude reference vector sequence when each component leaks at each leak point;
  • the leakage of the component at each leakage point is determined.
  • the leakage probability of the component at each leakage point determine whether the component has leakage and the leakage point of the component
  • the starting time point of the concentration increase period of the first monitoring point of the component in the corresponding time vector sequence is determined as the leakage time point of the component.
  • the third determining module 84 is specifically configured to, for each leakage point of the component in the leakage database, according to the time reference vector sequence of the leakage point and the time of the component A vector sequence to determine the first leakage probability of the leakage point;
  • a weighted summation is performed on the first leakage probability and the second leakage probability to determine the leakage probability of the component at the leakage point.
  • the calculation method of the first leakage probability and the second leakage probability is any one of the following methods, or a weighted sum of the calculation results of multiple methods: Euclidean distance calculation, Calculation of cosine degree of vector included angle.
  • the third determining module 84 is specifically configured to sort the leakage points according to the leakage probability of the components at each leakage point;
  • the leakage probability of a predetermined number of leak points in the previous order is greater than a predetermined probability threshold, it is determined that the component has a leak, and the predetermined number of leak points in the previous order is determined as the leak point of the component.
  • the volatile substance information of each monitoring point is collected by a mass spectrometer; correspondingly, the acquisition module 81 is specifically configured to obtain volatile substances collected by the mass spectrometer at each monitoring point in the room information;
  • Noise reduction, moving average filtering, and isomer merging are performed on the concentration curve corresponding to the at least one component to obtain volatile substance information at each monitoring point.
  • the indoor volatile substance leakage traceability device of the embodiment of the present disclosure obtains the volatile substance information of each monitoring point in the room.
  • the volatile substance information includes: the concentration information of at least one component of the volatile substance at each collection time point; According to the volatile substance information of the monitoring points, determine the concentration increase time period of at least one component; the concentration increase time period is the time period that meets the preset increase condition; for each component in at least one component, Determine the time vector sequence and amplitude vector sequence corresponding to each component according to the concentration increase time period of each component at each monitoring point; the time vector sequence is to sort the monitoring points in ascending order according to the starting time point of the concentration increase time period The obtained sequence; the amplitude vector sequence is the sequence obtained by sorting the detection points in descending order according to the concentration information in the time period of concentration increase; according to the time vector sequence and amplitude vector sequence corresponding to the component, determine whether the component has leakage and the component
  • the leakage point and time point of the leakage can be avoided, so as to avoid manual participation, reduce labor costs
  • FIG. 9 shows a schematic structural diagram of an electronic device 800 suitable for implementing embodiments of the present disclosure.
  • the electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (e.g. Mobile terminals such as car navigation terminals) and fixed terminals such as digital TVs, desktop computers, etc.
  • the electronic device shown in FIG. 9 is only an example, and should not bring any limitation to the function and scope of use of the embodiments of the present disclosure.
  • the electronic device 800 may include a processing device (such as a central processing unit, a graphics processor, etc.) 801, which may be loaded into a random access device according to a program stored in a read-only memory (ROM) 802 or from a storage device 808.
  • the program in the memory (RAM) 803 executes various appropriate actions and processing.
  • various programs and data required for the operation of the electronic device 800 are also stored.
  • the processing device 801, the ROM 802, and the RAM 803 are connected to each other through a bus 804.
  • An input/output (I/O) interface 805 is also connected to the bus 804.
  • the following devices can be connected to the I/O interface 805: including input devices 806 such as touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, liquid crystal display (LCD), speakers, vibration An output device 807 such as a device; a storage device 808 such as a tape, a hard disk, etc.; and a communication device 809.
  • the communication device 809 may allow the electronic device 800 to perform wireless or wired communication with other devices to exchange data.
  • FIG. 7 shows an electronic device 800 having various devices, it should be understood that it is not required to implement or have all the illustrated devices. It may be implemented alternatively or provided with more or fewer devices.
  • an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart.
  • the computer program may be downloaded and installed from the network through the communication device 809, or installed from the storage device 808, or installed from the ROM 802.
  • the processing device 801 the above-mentioned functions defined in the method of the embodiment of the present disclosure are executed.
  • the above-mentioned computer-readable medium in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two.
  • the computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or a combination of any of the above.
  • Computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable removable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.
  • a computer-readable storage medium may be any tangible medium that contains or stores a program, and the program may be used by or in combination with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a data signal propagated in a baseband or as a part of a carrier wave, and a computer-readable program code is carried therein.
  • This propagated data signal can take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • the computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium.
  • the computer-readable signal medium may send, propagate, or transmit the program for use by or in combination with the instruction execution system, apparatus, or device .
  • the program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to: wire, optical cable, RF (Radio Frequency), etc., or any suitable combination of the above.
  • the above-mentioned computer-readable medium may be included in the above-mentioned electronic device; or it may exist alone without being assembled into the electronic device.
  • the aforementioned computer-readable medium carries one or more programs, and when the aforementioned one or more programs are executed by the electronic device, the electronic device:
  • the volatile substance information includes: concentration information of at least one component of the volatile substance at each collection time point;
  • the concentration increase time period is a time period that meets a preset increase condition
  • the time vector sequence is based on the concentration A sequence obtained by sorting each monitoring point in ascending order at the start time point of the rising time period; the amplitude vector sequence is a sequence obtained by sorting each detection point in descending order according to the concentration information in the concentration rising time period;
  • the time vector sequence and the amplitude vector sequence corresponding to the component it is determined whether the component has leakage and the leakage point and the leakage time point of the component.
  • the computer program code used to perform the operations of the present disclosure may be written in one or more programming languages or a combination thereof.
  • the above-mentioned programming languages include object-oriented programming languages—such as Java, Smalltalk, C++, and also conventional Procedural programming language-such as "C" language or similar programming language.
  • the program code can be executed entirely on the user's computer, partly on the user's computer, executed as an independent software package, partly on the user's computer and partly executed on a remote computer, or entirely executed on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, using an Internet service provider to pass Internet connection).
  • LAN local area network
  • WAN wide area network
  • the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned indoor volatile substance leakage traceability method is realized.
  • the present disclosure also provides a computer program product, which when the instruction processor in the computer program product executes, realizes the above-mentioned indoor volatile substance leakage traceability method.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • a "computer-readable medium” can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, device, or device or in combination with these instruction execution systems, devices, or devices.
  • computer readable media include the following: electrical connections (electronic devices) with one or more wiring, portable computer disk cases (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable and editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program can be printed, because it can be used, for example, by optically scanning the paper or other medium, followed by editing, interpretation, or other suitable media if necessary. The program is processed in a manner to obtain the program electronically, and then stored in the computer memory.
  • each part of the present disclosure can be implemented by hardware, software, firmware, or a combination thereof.
  • multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.
  • Discrete logic gate circuits with logic functions for data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate array (PGA), field programmable gate array (FPGA), etc.
  • a person of ordinary skill in the art can understand that all or part of the steps carried in the method of the foregoing embodiments can be implemented by a program instructing relevant hardware to complete.
  • the program can be stored in a computer-readable storage medium. When executed, it includes one of the steps of the method embodiment or a combination thereof.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer readable storage medium.
  • the aforementioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

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Abstract

L'invention concerne un procédé et un appareil de traçabilité de fuite pour une substance volatile d'intérieur. Le procédé comprend les étapes consistant à : acquérir des informations se rapportant à la substance volatile au niveau de chaque point de surveillance d'intérieur, les informations se rapportant à la substance volatile comprenant des informations de concentration d'au moins un composant de la substance volatile à chaque point de temps de collecte (S101) ; pour chaque point de surveillance, déterminer une période de temps d'augmentation de concentration dudit au moins un composant en fonction des informations se rapportant à la substance volatile du point de surveillance, la période de temps d'augmentation de concentration étant une période de temps qui satisfait à une condition d'augmentation prédéfinie (S102) ; pour chaque composant dans ledit au moins un composant, en fonction de la période de temps d'augmentation de concentration de chaque composant au niveau de chaque point de surveillance, déterminer une séquence de vecteurs de temps et une séquence de vecteurs d'amplitude correspondant au composant, dans lequel la séquence de vecteurs de temps est une séquence obtenue par le tri dans un ordre croissant des points de surveillance en fonction d'un point de temps de départ de la période de temps d'augmentation de concentration, et la séquence de vecteurs d'amplitude est une séquence obtenue par le tri dans un ordre décroissant des points de surveillance en fonction des informations de concentration au cours de la période de temps d'augmentation de concentration (S103) ; et en fonction de la séquence de vecteurs de temps et de la séquence de vecteurs d'amplitude correspondant aux composants, déterminer si un composant a fui, et un point de fuite et un point de temps de fuite du composant (S104).
PCT/CN2020/141788 2019-12-31 2020-12-30 Procédé et appareil de traçabilité de fuite pour une substance volatile d'intérieur WO2021136450A1 (fr)

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