CN114580075A - Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin - Google Patents

Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin Download PDF

Info

Publication number
CN114580075A
CN114580075A CN202111431885.7A CN202111431885A CN114580075A CN 114580075 A CN114580075 A CN 114580075A CN 202111431885 A CN202111431885 A CN 202111431885A CN 114580075 A CN114580075 A CN 114580075A
Authority
CN
China
Prior art keywords
sensor
hydrogen
leakage
alarm
set value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111431885.7A
Other languages
Chinese (zh)
Inventor
李跃娟
赵梓茗
苗扬
王成
张筱璐
李建威
侯旭蕾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Technology
Original Assignee
Beijing University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN202111431885.7A priority Critical patent/CN114580075A/en
Publication of CN114580075A publication Critical patent/CN114580075A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/10—Numerical modelling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Evolutionary Computation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fuel Cell (AREA)

Abstract

The invention relates to a hierarchical layout method and a hierarchical layout system for hydrogen leakage sensors in a hydrogen fuel passenger car cabin, wherein the method comprises the steps of determining the position of a primary selection point of a sensor according to the hydrogen fuel passenger car cabin; determining a leakage scene set according to a historical leakage scene database; classifying alarm limit values of the sensors to obtain a multi-stage alarm classification set value; performing numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data; and constructing a mathematical programming model of the multi-stage alarm of the sensor by combining the occurrence probability and the gas diffusion real-time data based on the alarm grading set value, and solving the mathematical programming model so as to obtain the optimal layout position of the sensor. According to the method, the optimized sensor arrangement positions are obtained through solving of the mathematical model, and corresponding measures are taken when alarm conditions of different levels occur, so that the risk is effectively avoided, and meanwhile, financial resources and material resources are saved.

Description

Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin
Technical Field
The invention relates to the technical field of vehicle safety monitoring, in particular to a hierarchical layout method and a hierarchical layout system for hydrogen leakage sensors in a hydrogen fuel passenger car cabin.
Background
Hydrogen energy has drawn attention as a new energy source with its outstanding advantages of high combustion efficiency, clean combustion products, easy low-cost storage and transportation, and versatile use. However, hydrogen gas is extremely liable to cause explosion upon leakage. In order to ensure that the hydrogen leakage monitoring system obtains an effective and stable hydrogen concentration value through the hydrogen sensor when hydrogen leaks, the reliability and the measurement precision of the sensor are improved, and more importantly, reasonable arrangement of the hydrogen sensor is determined. The early warning method has important significance for guaranteeing the safety of life and property of personnel and early warning of typical scenes related to hydrogen of fuel cell automobiles and the like.
At present, the layout of hydrogen leakage sensors in a hydrogen fuel passenger car cabin mainly adopts a traditional empirical layout mode, various factors influencing hydrogen concentration diffusion are not considered, and unreasonable arrangement of sensor positions is easy to cause, so that certain leakage scenes cannot be detected in real time and an alarm is given.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a hierarchical layout method and a hierarchical layout system for hydrogen leakage sensors in a hydrogen fuel passenger car cabin.
In order to achieve the purpose, the invention provides the following scheme:
a hierarchical layout method for hydrogen leakage sensors in a hydrogen fuel passenger car cabin comprises the following steps:
based on computer aided design software, determining the position of a primary selection point of a sensor according to a hydrogen fuel passenger car cabin;
determining a leakage scene set according to a historical leakage scene database; the leakage scene set comprises the number of scenes of the leakage scene and the occurrence probability of each leakage scene;
classifying alarm limit values of the sensors to obtain a multi-stage alarm classification set value;
performing numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data;
based on the alarm grading set value, combining the occurrence probability and the gas diffusion real-time data to construct a mathematical planning model of the sensor multi-level alarm;
and solving the mathematical programming model to obtain the optimal layout position of the sensor.
Preferably, the computer-aided design software-based method for determining the location of the initial sensor point based on the hydrogen fueled passenger vehicle cabin comprises:
acquiring an initial model of a hydrogen fuel passenger car cabin;
importing the initial model into the computer aided design software, and dividing the upper part of the initial model into a feasible arrangement space of the hydrogen sensor according to the principle that the sensor is installed on the upper half part of the region;
carrying out grid division on the feasible arrangement space to obtain a plurality of grid intersection points; and the position of the grid intersection point is the position of the initial selection point of the sensor.
Preferably, the computer aided design software is ANSYS computational fluid dynamics software.
Preferably, the classifying the alarm limit value of the sensor to obtain a multi-level alarm classification set value includes:
taking 10% of a preset lower limit value of hydrogen explosion as a first-level alarm grading set value of the sensor;
taking 25% of a preset lower limit value of hydrogen explosion as a second-level alarm grading set value of the sensor;
and taking 50% of the preset lower limit value of hydrogen explosion as an alarm grading set value of the third level of the sensor.
Preferably, the performing numerical simulation calculation according to the leakage scene set and the position of the sensor primary point to obtain gas diffusion real-time data includes:
building a fuel passenger car model according to the leakage scene set and the position of the sensor initial point by using simulation software;
carrying out numerical simulation calculation on the fuel passenger car model to obtain the gas diffusion real-time data; the gas diffusion real-time data includes time required for each sensor to reach the first level alarm staging set value, the second level alarm staging set value, and the third level alarm staging set value, respectively.
Preferably, the step of constructing a mathematical planning model of the sensor multi-level alarm based on the alarm hierarchical set value and by combining the occurrence probability and the gas diffusion real-time data comprises:
selecting sensor alternate points from the positions of all the sensor initial points;
establishing the mathematical programming model by combining the occurrence probability and the gas diffusion real-time data; the formula of the mathematical programming model is as follows:
Figure BDA0003380539790000031
Figure BDA0003380539790000032
Figure BDA0003380539790000033
wherein, T1Detecting the time when all leakage scenes are detected to reach the first-level alarm grading set value for the sensor alternative points; t is2Detecting for the sensor candidate points the time at which all leakage scenarios reach the second level alarm rating set value; t is3Detecting an alarm rating to the third level for all leakage scenarios detected for the sensor candidate pointsTime of setting value; m is the scene number of the leakage scene; pi is the occurrence probability of the ith leakage scenario; q is the number of the sensor alternative points; t is t1ijDetecting the time when the hydrogen leakage concentration reaches the first-level alarm grading set value at the initial selection point j of the sensor in the ith scene; t is t2ijDetecting the time when the hydrogen leakage concentration reaches the second-level alarm grading set value at the initial selection point j of the sensor in the ith scene; t is t3ijAnd detecting the time when the hydrogen leakage concentration reaches the third-level alarm grading set value for the initial selection point j of the sensor in the ith scene.
Preferably, the solving the mathematical programming model to obtain the optimized layout position of the sensor includes:
solving the mathematical programming model through a particle swarm algorithm to obtain a plurality of solving results;
and selecting an integer solution in the solution result as the final optimal layout position of the sensor.
A hierarchical layout system for hydrogen leak sensors in a hydrogen fueled passenger vehicle cabin, comprising:
the initial selection point determining module is used for determining the position of the initial selection point of the sensor according to the hydrogen fuel passenger car cabin based on computer aided design software;
the scene set construction module is used for determining a leakage scene set according to the historical leakage scene database; the leakage scene set comprises the number of scenes of the leakage scene and the occurrence probability of each leakage scene;
the sensor grading module is used for grading the alarm limit value of the sensor to obtain a multi-level alarm grading set value;
the simulation module is used for carrying out numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data;
the model establishing module is used for establishing a mathematical planning model of the sensor multi-level alarm by combining the occurrence probability and the gas diffusion real-time data based on the alarm grading set value;
and the solving module is used for solving the mathematical programming model to obtain the optimal layout position of the sensor.
Preferably, the initial point determining module specifically includes:
an initial model obtaining unit, which is used for obtaining an initial model of the hydrogen fuel passenger car cabin;
the space dividing unit is used for importing the initial model into the computer aided design software and dividing the upper part of the initial model into a feasible arrangement space of the hydrogen sensor according to the principle that the sensor is installed on the upper half part of the region;
the grid division unit is used for carrying out grid division on the feasible arrangement space to obtain a plurality of grid intersection points; and the position of the grid intersection point is the position of the initial selection point of the sensor.
Preferably, the sensor ranking module specifically includes:
the first grading unit is used for taking 10% of a preset lower limit value of hydrogen explosion as an alarm grading set value of the first grade of the sensor;
the second grading unit is used for taking 25% of a preset lower limit value of hydrogen explosion as a second-grade alarm grading set value of the sensor;
and the third grading unit is used for taking 50% of a preset lower limit value of hydrogen explosion as an alarm grading set value of the third grade of the sensor.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a hierarchical layout method and a hierarchical layout system for hydrogen leakage sensors in a hydrogen fuel passenger car cabin.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a layout method in an embodiment provided by the present invention;
FIG. 2 is a functional block diagram of an overall process in an embodiment provided by the present invention;
FIG. 3 is a schematic diagram of the initial point of the sensor in an embodiment provided by the present invention;
FIG. 4 is a schematic representation of a fuel passenger vehicle model in an embodiment provided by the present invention;
fig. 5 is a block diagram of a layout system in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, the inclusion of a list of steps, processes, methods, etc. is not limited to only those steps recited, but may alternatively include additional steps not recited, or may alternatively include additional steps inherent to such processes, methods, articles, or devices.
The invention aims to provide a method and a system for graded layout of hydrogen leakage sensors in a hydrogen fuel passenger car cabin.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a flow chart of a layout method in an embodiment provided by the present invention, and as shown in fig. 1, the present invention provides a hierarchical layout method of hydrogen leakage sensors in a hydrogen-fueled passenger car cabin, which includes:
step 100: based on computer aided design software, determining the position of a primary selection point of a sensor according to a hydrogen fuel passenger car cabin;
step 200: determining a leakage scene set according to a historical leakage scene database; the leakage scene set comprises the number of scenes of the leakage scene and the occurrence probability of each leakage scene;
step 300: classifying alarm limit values of the sensors to obtain a multi-stage alarm classification set value;
step 400: performing numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data;
step 500: based on the alarm grading set value, combining the occurrence probability and the gas diffusion real-time data to construct a mathematical programming model of the sensor multi-level alarm;
step 600: and solving the mathematical programming model to obtain the optimal layout position of the sensor.
Preferably, the computer-aided design software-based method for determining the location of the initial sensor point based on the hydrogen fueled passenger vehicle cabin comprises:
acquiring an initial model of a hydrogen fuel passenger car cabin;
importing the initial model into the computer aided design software, and dividing the upper part of the initial model into a feasible arrangement space of the hydrogen sensor according to the principle that the sensor is installed on the upper half part of the region;
carrying out grid division on the feasible arrangement space to obtain a plurality of grid intersection points; and the position of the grid intersection point is the position of the initial selection point of the sensor.
Fig. 2 is a schematic block diagram of the overall process in the embodiment of the present invention, and as shown in fig. 2, the initial point determination in this embodiment is implemented by step cabin meshing, because the hydrogen concentration is less than the air concentration, and it is easier to diffuse upward when leaking, and a sensor is arranged above the calculation space. The hydrogen fuel passenger car cabin is subjected to grid division through ANSYS computer fluid mechanics software, monitoring points are uniformly arranged on intersection points of grids at set heights to serve as specific positions of sensor primary selection points, and as shown in figure 3, the number of the sensor primary selection points is N, xnIs the nth sensor initial point.
Specifically, in the step of constructing the leakage scene set in this embodiment, the leakage scene and the occurrence probability of the leakage scene can be obtained.
Further, in this embodiment, a leakage scene set is established, the occurrence probabilities of different leakage scenes are obtained according to the existing database, and different factors affecting gas diffusion, such as a leakage position, a leakage pressure, and a leakage aperture, are comprehensively considered based on the occurrence probability of each scene. And providing a leakage scene for subsequent fuel passenger car model simulation. The total number of scenes is M, and the occurrence probability of the scene M is PmAnd the method is used for establishing a subsequent function model.
Preferably, the classifying the alarm limit value of the sensor to obtain a multistage alarm classification set value includes:
taking 10% of a preset lower limit value of hydrogen explosion as a first-level alarm grading set value of the sensor;
taking 25% of a preset lower limit value of hydrogen explosion as a second-level alarm grading set value of the sensor;
and taking 50% of the preset lower limit value of hydrogen explosion as an alarm grading set value of the third level of the sensor.
Specifically, the sensor is set to three-level alarm according to the difference of hydrogen concentration in the cabin of the fuel cell passenger car, and 10%, 25% and 50% of the lower limit value of hydrogen explosion are respectively taken as the alarm set values of the sensor, that is, the sensor is required to send out first, second and third-level sound and light alarms when the sensor detects that the hydrogen content is 0.4%, 1% and 2%, and the alarm set values of the sensor are used for analog calculation.
Preferably, the performing numerical simulation calculation according to the leakage scene set and the position of the sensor primary point to obtain gas diffusion real-time data includes:
building a fuel passenger car model according to the leakage scene set and the position of the sensor initial point by using simulation software;
carrying out numerical simulation calculation on the fuel passenger car model to obtain the gas diffusion real-time data; the gas diffusion real-time data includes time required for each sensor to reach the first level alarm staging set value, the second level alarm staging set value, and the third level alarm staging set value, respectively.
Further, in the embodiment, a simulation software is used to establish a hydrogen fuel passenger car CFD three-dimensional model in combination with the leakage scene set, so as to restore the real situation in the passenger car cabin, and simplify the space, as shown in fig. 4. Obtaining real-time gas diffusion data in each leakage scene in scene set through numerical simulation, and obtaining the time t respectively required by the primary selection point n of the sensor to detect that the hydrogen leakage concentration reaches the first-level alarm, the second-level alarm and the third-level alarm under m scenes1mn、t2mnAnd t3mn。
Optionally, the gas diffusion real-time data comprises t1mn、t2mnAnd t3mnAnd other parameters such as coordinates, concentration, time, etc.
Preferably, the step of constructing a mathematical planning model of the sensor multi-level alarm based on the alarm hierarchical set value and by combining the occurrence probability and the gas diffusion real-time data comprises:
selecting sensor alternate points from the positions of all the sensor initial points;
establishing the mathematical programming model by combining the occurrence probability and the gas diffusion real-time data; the formula of the mathematical programming model is as follows:
Figure BDA0003380539790000081
Figure BDA0003380539790000082
Figure BDA0003380539790000083
wherein, T1Detecting the time when all leakage scenes are detected to reach the first-level alarm grading set value for the sensor alternative points; t is2Detecting for the sensor candidate points the time at which all leakage scenarios reach the second level alarm rating set value; t is3Detecting the time for all leakage scenes to reach the alarm grading set value of the third level for the sensor alternative points; m is the scene number of the leakage scene; pi is the occurrence probability of the ith leakage scenario; q is the number of the sensor alternative points; t is t1ijDetecting the time when the hydrogen leakage concentration reaches the first-level alarm grading set value at the initial selection point j of the sensor in the ith scene; t is t2ijDetecting the time when the hydrogen leakage concentration reaches the second-level alarm grading set value at the initial selection point j of the sensor in the ith scene; t is t3ijAnd detecting the time when the hydrogen leakage concentration reaches the third-level alarm grading set value at the initial selection point j of the sensor in the ith scene.
Preferably, the solving the mathematical programming model to obtain the optimal layout position of the sensor includes:
solving the mathematical programming model through a particle swarm algorithm to obtain a plurality of solving results;
and selecting an integer solution in the solution result as the final optimal layout position of the sensor.
Specifically, the number of the optional points of the sensor is Q, namely Q position coordinates are selected from N to serve as final positions, and a mathematical programming function of three-level alarm of the sensor is established by combining the leakage probability of each scene in a scene set.
The time for detecting all leakage scenes by the alternative points of the sensor to reach the first-level alarm is
Figure BDA0003380539790000091
Figure BDA0003380539790000092
The time for detecting all leakage scenes by the alternative points of the sensor to reach the secondary alarm is
Figure BDA0003380539790000093
Figure BDA0003380539790000094
The time for detecting all leakage scenes by the alternative points of the sensor to reach the third-level alarm is
Figure BDA0003380539790000095
Figure BDA0003380539790000096
Namely, the problem is a multi-target integer programming model, and the integer solution meeting the conditions is solved through a particle swarm algorithm, namely the final sensor optimized layout position is obtained.
Fig. 5 is a block diagram showing a layout system in an embodiment of the present invention, and as shown in fig. 5, the present invention further provides a hydrogen leakage sensor hierarchical layout system in a cabin of a hydrogen-fueled passenger vehicle, including:
the initial selection point determining module is used for determining the position of a sensor initial selection point according to the hydrogen fuel passenger car cabin based on computer aided design software;
the scene set construction module is used for determining a leakage scene set according to the historical leakage scene database; the leakage scene set comprises the number of scenes of the leakage scene and the occurrence probability of each leakage scene;
the sensor grading module is used for grading the alarm limit value of the sensor to obtain a multi-level alarm grading set value;
the simulation module is used for carrying out numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data;
the model establishing module is used for establishing a mathematical planning model of the sensor multi-level alarm by combining the occurrence probability and the gas diffusion real-time data based on the alarm grading set value;
and the solving module is used for solving the mathematical programming model to obtain the optimal layout position of the sensor.
Preferably, the initial point determining module specifically includes:
an initial model obtaining unit, which is used for obtaining an initial model of the hydrogen fuel passenger car cabin;
the space dividing unit is used for importing the initial model into the computer aided design software and dividing the upper part of the initial model into a feasible arrangement space of the hydrogen sensor according to the principle that the sensor is installed on the upper half part of the region;
the grid division unit is used for carrying out grid division on the feasible arrangement space to obtain a plurality of grid intersection points; and the position of the grid intersection point is the position of the initial selection point of the sensor.
Preferably, the sensor ranking module specifically includes:
the first grading unit is used for taking 10% of a preset lower limit value of hydrogen explosion as an alarm grading set value of the first grade of the sensor;
the second grading unit is used for taking 25% of a preset hydrogen explosion lower limit value as an alarm grading set value of a second grade of the sensor;
and the third grading unit is used for taking 50% of a preset lower limit value of hydrogen explosion as an alarm grading set value of the third grade of the sensor.
The invention has the following beneficial effects:
(1) the invention completes the mapping of the hydrogen leakage scene in the computer software, avoids the casualty accident caused by the accident of the hydrogen leakage test, and saves the complicated labor, material resources and time cost.
(2) According to the method, the optimized sensor arrangement positions are obtained through solving of the mathematical model, and corresponding measures are taken when alarm conditions of different levels occur, so that the risk is effectively avoided, and meanwhile, financial resources and material resources are saved.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. A hierarchical layout method for hydrogen leakage sensors in a hydrogen fuel passenger car cabin is characterized by comprising the following steps:
determining the position of a sensor initial selection point according to the hydrogen fuel passenger car cabin based on computer aided design software;
determining a leakage scene set according to a historical leakage scene database; the leakage scene set comprises the number of scenes of the leakage scene and the occurrence probability of each leakage scene;
classifying alarm limit values of the sensors to obtain a multistage alarm classification set value;
performing numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data;
based on the alarm grading set value, combining the occurrence probability and the gas diffusion real-time data to construct a mathematical planning model of the sensor multi-level alarm;
and solving the mathematical programming model to obtain the optimal layout position of the sensor.
2. The method of claim 1, wherein said determining the location of the initial sensor point from the hydrogen-fueled passenger vehicle cabin based on computer-aided design software comprises:
acquiring an initial model of a hydrogen fuel passenger car cabin;
importing the initial model into the computer aided design software, and dividing the upper part of the initial model into a feasible arrangement space of the hydrogen sensor according to the principle that the sensor is installed on the upper half part of the region;
carrying out grid division on the feasible arrangement space to obtain a plurality of grid intersection points; and the position of the grid intersection point is the position of the initial selection point of the sensor.
3. The hierarchical layout method for hydrogen leak sensors in a hydrogen fueled passenger vehicle cabin according to claim 2, wherein the computer aided design software is ANSYS computer fluid mechanics software.
4. The staged layout method for hydrogen leakage sensors in a hydrogen fueled passenger vehicle cabin according to claim 1, wherein the staging of the alarm limit values of the sensors to obtain multi-stage alarm staged setting values comprises:
taking 10% of a preset lower limit value of hydrogen explosion as a first-level alarm grading set value of the sensor;
taking 25% of a preset hydrogen explosion lower limit value as an alarm grading set value of a second level of the sensor;
and taking 50% of the preset lower hydrogen explosion limit value as an alarm grading set value of the third level of the sensor.
5. The hierarchical layout method of hydrogen leakage sensors in a hydrogen-fueled passenger car cabin according to claim 4, wherein the step of performing numerical simulation calculation according to the leakage scene set and the positions of the initial points of the sensors to obtain gas diffusion real-time data comprises the following steps:
building a fuel passenger car model according to the leakage scene set and the position of the sensor initial point by using simulation software;
carrying out numerical simulation calculation on the fuel passenger car model to obtain the gas diffusion real-time data; the gas diffusion real-time data includes time required for each sensor to reach the first level alarm staging set value, the second level alarm staging set value, and the third level alarm staging set value, respectively.
6. The hierarchical layout method for hydrogen leakage sensors in a hydrogen-fueled passenger vehicle cabin according to claim 4, wherein the step of building a mathematical programming model of the multilevel sensor alarm based on the alarm hierarchical set values by combining the occurrence probability and the gas diffusion real-time data comprises the following steps:
selecting sensor alternate points from the positions of all the sensor initial points;
establishing the mathematical programming model by combining the occurrence probability and the gas diffusion real-time data; the formula of the mathematical programming model is as follows:
Figure FDA0003380539780000021
Figure FDA0003380539780000022
Figure FDA0003380539780000023
wherein, T1Detecting the time when all leakage scenes are detected to reach the first-level alarm grading set value for the sensor alternative points; t is2Detecting for the sensor candidate points the time at which all leakage scenarios reach the second level alarm rating set value; t is3Detecting the time for all leakage scenes to reach the alarm grading set value of the third level for the sensor alternative points; m is the scene number of the leakage scene; piThe occurrence probability of the ith leakage scene; q is the number of the sensor alternative points; t is t1ijDetecting the time when the hydrogen leakage concentration reaches the first-level alarm grading set value at the initial selection point j of the sensor in the ith scene; t is t2ijDetecting the time when the hydrogen leakage concentration reaches the second-level alarm grading set value at the initial selection point j of the sensor in the ith scene; t is t3ijAnd detecting the time when the hydrogen leakage concentration reaches the third-level alarm grading set value at the initial selection point j of the sensor in the ith scene.
7. The hierarchical layout method for hydrogen leakage sensors in a hydrogen-fueled passenger vehicle cabin according to claim 6, wherein solving the mathematical programming model to obtain the optimal layout positions of the sensors comprises:
solving the mathematical programming model through a particle swarm algorithm to obtain a plurality of solving results;
and selecting an integer solution in the solution result as the final optimal layout position of the sensor.
8. A hierarchical layout system of hydrogen leakage sensors in a hydrogen fueled passenger vehicle cabin, comprising:
the initial selection point determining module is used for determining the position of the initial selection point of the sensor according to the hydrogen fuel passenger car cabin based on computer aided design software;
the scene set construction module is used for determining a leakage scene set according to the historical leakage scene database; the leakage scene set comprises the number of scenes of the leakage scene and the occurrence probability of each leakage scene;
the sensor grading module is used for grading the alarm limit value of the sensor to obtain a multi-level alarm grading set value;
the simulation module is used for carrying out numerical simulation calculation according to the leakage scene set and the position of the initial point of the sensor to obtain gas diffusion real-time data;
the model establishing module is used for establishing a mathematical planning model of the sensor multi-level alarm by combining the occurrence probability and the gas diffusion real-time data based on the alarm grading set value;
and the solving module is used for solving the mathematical programming model to obtain the optimal layout position of the sensor.
9. The staged layout system for hydrogen leak sensors in a hydrogen-fueled passenger vehicle cabin according to claim 8, wherein the initialization point determination module specifically comprises:
an initial model obtaining unit, which is used for obtaining an initial model of the hydrogen fuel passenger car cabin;
the space dividing unit is used for importing the initial model into the computer aided design software and dividing the upper part of the initial model into a feasible arrangement space of the hydrogen sensor according to the principle that the sensor is installed on the upper half part of the region;
the grid division unit is used for carrying out grid division on the feasible arrangement space to obtain a plurality of grid intersection points; and the position of the grid intersection point is the position of the initial selection point of the sensor.
10. The hydrogen-fueled passenger vehicle cabin hydrogen leak sensor staging arrangement according to claim 8, wherein the sensor staging module specifically comprises:
the first grading unit is used for taking 10% of a preset lower limit value of hydrogen explosion as an alarm grading set value of the first grade of the sensor;
the second grading unit is used for taking 25% of a preset lower limit value of hydrogen explosion as a second-grade alarm grading set value of the sensor;
and the third grading unit is used for taking 50% of a preset lower limit value of hydrogen explosion as an alarm grading set value of the third grade of the sensor.
CN202111431885.7A 2021-11-29 2021-11-29 Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin Pending CN114580075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111431885.7A CN114580075A (en) 2021-11-29 2021-11-29 Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111431885.7A CN114580075A (en) 2021-11-29 2021-11-29 Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin

Publications (1)

Publication Number Publication Date
CN114580075A true CN114580075A (en) 2022-06-03

Family

ID=81769030

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111431885.7A Pending CN114580075A (en) 2021-11-29 2021-11-29 Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin

Country Status (1)

Country Link
CN (1) CN114580075A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116702335A (en) * 2023-08-07 2023-09-05 北京理工大学 Optimal arrangement method and switching method for hydrogen concentration sensor of fuel cell automobile

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792468A (en) * 2015-04-07 2015-07-22 中国石油大学(华东) Optimal locating method of gas detection alarms of oil refining device
CN106501451A (en) * 2016-10-21 2017-03-15 中国科学院上海高等研究院 A kind of disposition optimization method of gas sensor, system and server
CN110335438A (en) * 2019-06-20 2019-10-15 武汉理工大学 A kind of hydrogen fuel cell safety of ship protection system and guard method
CN110763809A (en) * 2019-11-15 2020-02-07 中国石油大学(华东) Experimental verification method for optimal arrangement scheme of gas detector
CN111476278A (en) * 2020-03-20 2020-07-31 淮阴工学院 Intelligent gas concentration detection system
EP3770794A1 (en) * 2019-07-22 2021-01-27 Kidde Technologies, Inc. Smoke detection layout validation
CN112659899A (en) * 2020-12-15 2021-04-16 江苏大学 Leakage fusion detection system and method for vehicle-mounted hydrogen supply system
CN112918259A (en) * 2021-03-15 2021-06-08 北京科技大学 Hydrogen leakage safety grading alarm system for hydrogen energy automobile

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792468A (en) * 2015-04-07 2015-07-22 中国石油大学(华东) Optimal locating method of gas detection alarms of oil refining device
CN106501451A (en) * 2016-10-21 2017-03-15 中国科学院上海高等研究院 A kind of disposition optimization method of gas sensor, system and server
CN110335438A (en) * 2019-06-20 2019-10-15 武汉理工大学 A kind of hydrogen fuel cell safety of ship protection system and guard method
EP3770794A1 (en) * 2019-07-22 2021-01-27 Kidde Technologies, Inc. Smoke detection layout validation
CN110763809A (en) * 2019-11-15 2020-02-07 中国石油大学(华东) Experimental verification method for optimal arrangement scheme of gas detector
CN111476278A (en) * 2020-03-20 2020-07-31 淮阴工学院 Intelligent gas concentration detection system
CN112659899A (en) * 2020-12-15 2021-04-16 江苏大学 Leakage fusion detection system and method for vehicle-mounted hydrogen supply system
CN112918259A (en) * 2021-03-15 2021-06-08 北京科技大学 Hydrogen leakage safety grading alarm system for hydrogen energy automobile

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
YHDING@STU: "ANSYS网格划分简述", 《HTTPS://BLOG.CSDN.NET/DYH_BK/ARTICLE/DETAILS/108210388》 *
王秋波;齐巍;张筱璐;侯旭蕾;余培锦;李跃娟: "燃料电池客车氢气泄漏位置对扩散特性的影响规律研究", 《跃娟 2021中国汽车工程学会年会论文集（2）》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116702335A (en) * 2023-08-07 2023-09-05 北京理工大学 Optimal arrangement method and switching method for hydrogen concentration sensor of fuel cell automobile
CN116702335B (en) * 2023-08-07 2024-02-06 北京理工大学 Optimal arrangement method and switching method for hydrogen concentration sensor of fuel cell automobile

Similar Documents

Publication Publication Date Title
CN111275333A (en) Pollution data processing method and device
CN115759378A (en) Dam safety analysis early warning system and method based on digital twins
CN103914622A (en) Quick chemical leakage predicating and warning emergency response decision-making method
CN112529327A (en) Method for constructing fire risk prediction grade model of buildings in commercial areas
CN116681292B (en) Petrochemical harbor security risk analysis and responsibility division method based on deep learning
CN110763809B (en) Experimental verification method for optimal arrangement scheme of gas detector
CN114580075A (en) Hierarchical layout method and system for hydrogen leakage sensors in hydrogen fuel passenger car cabin
CN108133316A (en) A kind of detection method of electric power supply plant power equipment familial defect
Su et al. Multisource information fusion‐based approach diagnosing structural behavior of dam engineering
CN104456092A (en) Multidimensional assessment method of petroleum and natural gas pipeline warning priority
Li et al. Real‐Time Warning and Risk Assessment of Tailings Dam Disaster Status Based on Dynamic Hierarchy‐Grey Relation Analysis
CN112784277B (en) Software credibility comprehensive evaluation method based on improved D-S evidence theory
CN115906706A (en) High-precision risk analysis method for domino comprehensive risk of hazardous chemical tank area
CN115618719A (en) Fire smoke monitoring and early warning method and system in industrial building and storage medium
CN115456331A (en) Application of multidimensional multi-measuring point model on-line monitoring algorithm in monitoring analysis system platform
CN118133695A (en) Subway station fire disaster temperature field simulation system and method based on big data processing and neural network
CN117851879A (en) Method and device for studying, judging and predicting disaster evolution of leakage explosion accident of hydrogen station
Liu et al. Decision-level fusion detection method of hydrogen leakage in hydrogen supply system of fuel cell truck
CN114254422A (en) Process optimization method, device, equipment and storage medium of building information model
KR20170040908A (en) Probabilistic gas explosion scenario calculation system and probabilistic gas explosion scenario calculation method using the same
CN110020758A (en) Natural gas pipeline inherent peril appraisal procedure
CN115496003A (en) Overpressure injury assessment method for leakage explosion accident of hydrogenation station
CN118228414A (en) Automatic type selection system for pipeline support and hanger based on BIM technology and use method
CN117494950B (en) Optical storage, filling and inspection micro-grid integrated station operation safety evaluation method
Hu et al. Comprehensive review of hydrogen leakage in relation to fuel cell vehicles and hydrogen refueling stations: status, challenges, and future prospects

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination