CN114036734B - Digital twin-based layout optimization method and system for vehicle hydrogen sensor - Google Patents
Digital twin-based layout optimization method and system for vehicle hydrogen sensor Download PDFInfo
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Abstract
The invention relates to a vehicle hydrogen sensor layout optimization method and system based on digital twin, which are used for completing the mapping of a hydrogen leakage detection scene by constructing the hydrogen leakage detection scene of a virtual hydrogen fuel passenger vehicle, avoiding casualties caused by hydrogen leakage test accidents, and saving complex manpower, material resources and time cost. The hydrogen concentration data are preprocessed by using an edge calculation algorithm, and hydrogen concentration characteristic points under different leakage position conditions are extracted and summarized by the algorithm, so that redundant time-consuming manual analysis data processing work is avoided. The invention can reduce the probability of harm caused by hydrogen leakage accidents, promote the safe operation of the hydrogen fuel vehicle, strengthen the trust of people on hydrogen fuel vehicles and accelerate the perfection construction of a hydrogen energy industrial chain.
Description
Technical Field
The invention relates to the technical field of vehicle safety monitoring, in particular to a digital twin-based layout optimization method and system for a vehicle hydrogen sensor.
Background
With the industrial development, the traditional energy is not renewable and causes pollution, and the application of green energy becomes the necessary way for the development of human beings. To achieve the goal and achieve the strategic goal of national petroleum safety, the domestic popularization of hydrogen energy vehicles will become inevitable, and by 2030 years, fuel cell vehicles will reach 200 thousands in China.
The hydrogen high-pressure storage tank, the hydrogen pipeline and other hydrogen equipment of the hydrogen fuel vehicle are used for supplying hydrogen to enable the hydrogen fuel vehicle to run, but the risk of hydrogen leakage exists due to factors such as accidental collision of the vehicle or equipment aging. The hydrogen safety hidden danger is higher due to the wide combustible range, the rapid propagation speed and the low ignition of the hydrogen, and the hydrogen safety problem becomes the key for popularization of the hydrogen fuel vehicle in the future.
However, the position of the possible leakage source is difficult to predict due to the fact that the hydrogen leakage accident model of the hydrogen fuel vehicle is few and the investigation of the accident cause is incomplete. Hydrogen is colorless and tasteless, and the human body can't perceive, and in the detection of hydrogen leakage, car enterprise often adopts more than 5 sensors to arrange in the car. The purpose of in-vehicle sensors is to detect leaks and shut off the hydrogen supply prior to hydrogen combustion to circumvent the risk of large-scale deflagrations, however there are few studies and verifications regarding the speed and effectiveness of detection of their sensor arrangements. The flammable nature of hydrogen and the testing of a variety of scenarios represent a high risk and testing cost.
In addition, the price of the hydrogen sensor for the vehicle is high, the price of a single hydrogen sensor for the vehicle is 1200-3000 yuan, the new energy vehicle is originally inferior to the traditional fuel vehicle in price, and the reduction of the cost of the hydrogen sensor is also a necessary part for hydrogen energy vehicle enterprises to compete for markets in the future. The arrangement scheme of the hydrogen sensor for detecting hydrogen leakage in the hydrogen fuel vehicle is not mature, and for unknown leakage sources, how to detect the hydrogen leakage as soon as possible by using as few sensors as possible is a difficult problem to be solved in the field of hydrogen fuel vehicle manufacturing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a digital twin-based layout optimization method and system for a vehicular hydrogen sensor.
In order to achieve the purpose, the invention provides the following scheme:
a layout optimization method for a digital twin-based vehicular hydrogen sensor comprises the following steps:
constructing a hydrogen leakage detection scene of a virtual hydrogen fuel passenger car based on a digital twin technology;
performing hydrogen leakage position simulation based on the hydrogen leakage detection scene to obtain leakage data; the leak data includes hydrogen diffusion path data and hydrogen accumulation region data;
analyzing and summarizing the leakage data according to an edge calculation method to obtain characteristic points of the same hydrogen concentration under the condition of leakage at different positions;
planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets;
and optimizing the number of the sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor layout scheme.
Preferably, the hydrogen leakage detection scenario for constructing the virtual hydrogen fuel passenger car includes:
acquiring characteristic parameters of a real leakage scene; the characteristic parameters comprise: leak space shape and size, leak port geometry and size, leak rate and leak location;
and carrying out scene construction in a virtual engine according to the characteristic parameters to obtain the hydrogen leakage detection scene.
Preferably, the virtual engine is Unity.
Preferably, the hydrogen leakage position simulation based on the hydrogen leakage detection scenario is performed to obtain leakage data, and the method includes:
acquiring a plurality of preset hydrogen leakage positions;
performing ANSYS simulation according to the hydrogen leakage detection scene and the preset hydrogen leakage position to obtain initial data of a hydrogen concentration field formed by hydrogen leakage at different positions;
and screening the initial data according to a preset concentration change requirement to obtain the leakage data.
Preferably, the analyzing and summarizing the leakage data according to an edge calculation method to obtain feature points of the same hydrogen concentration under different position leakage conditions includes:
and preprocessing the leakage data according to an edge calculation method to obtain a plurality of characteristic points.
Preferably, the planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets, including:
and respectively judging whether the concentration data of the hydrogen condition of each spatial position point in the characteristic points is greater than a preset threshold value, if so, marking the spatial position point as the initial sensor arrangement position set.
Preferably, the optimizing the number of sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor arrangement scheme includes:
arranging virtual hydrogen sensors in the virtual engine according to the leakage data and the initial sensor arrangement position set to carry out verification simulation, and obtaining the response time of the virtual hydrogen sensors under each initial sensor arrangement position set;
selecting the initial set of sensor arrangement locations with the response times within a preset response threshold range as an initial set of optimized locations;
analyzing the relation between the number of the virtual hydrogen sensors and the response time under different initial optimization position sets, and taking the result of the leakage probability multiplied by the system response time/the number of the sensors as a judgment index to obtain the optimal number of the sensors;
and determining the optimal vehicle sensor layout scheme according to the optimal sensor number and the initial optimal position set.
A digital twin-based layout optimization system for a vehicular hydrogen sensor, comprising:
the building module is used for building a hydrogen leakage detection scene of the virtual hydrogen fuel passenger car;
the simulation module is used for simulating a hydrogen leakage position based on the hydrogen leakage detection scene to obtain leakage data; the leak data includes hydrogen diffusion path data and hydrogen accumulation region data;
the preprocessing module is used for analyzing and summarizing the leakage data according to an edge calculation method to obtain characteristic points of the same hydrogen concentration under the condition of leakage at different positions;
the planning module is used for planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets;
and the optimization module is used for optimizing the number of the sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor arrangement scheme.
Preferably, the building module specifically includes:
the parameter acquisition unit is used for acquiring the characteristic parameters of the real leakage scene; the characteristic parameters comprise: leakage space shape and size, leakage port geometry and size, leakage rate and leakage position;
and the construction unit is used for carrying out scene construction in the virtual engine according to the characteristic parameters to obtain the hydrogen leakage detection scene.
Preferably, the simulation module specifically includes:
an acquisition unit configured to acquire a plurality of preset hydrogen leakage positions;
the simulation unit is used for carrying out ANSYS simulation according to the hydrogen leakage detection scene and the preset hydrogen leakage position to obtain initial data of hydrogen concentration fields formed by hydrogen leakage at different positions;
and the data processing unit is used for screening the initial data according to the preset concentration change requirement to obtain the leakage data.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a digital twin-based layout optimization method and system for a vehicle hydrogen sensor, which are used for completing the mapping of a hydrogen leakage detection scene by constructing the hydrogen leakage detection scene of a virtual hydrogen fuel passenger car, avoiding casualties caused by hydrogen leakage test accidents, and saving complex manpower, material resources and time cost. The hydrogen concentration data are preprocessed by using an edge calculation algorithm, and hydrogen concentration characteristic points under different leakage position conditions are extracted and summarized by the algorithm, so that redundant time-consuming manual analysis data processing work is avoided. The invention can reduce the probability of harm caused by hydrogen leakage accidents, promote the safe operation of the hydrogen fuel vehicle, strengthen the trust of people on the hydrogen fuel vehicle and accelerate the perfection construction of the hydrogen energy industrial chain.
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 an optimization method in an embodiment provided by the present invention;
FIG. 2 is a flowchart of overall optimization in an embodiment provided by the present invention;
FIG. 3 is a schematic view of a leak location in an embodiment provided by the present invention;
FIG. 4 is a schematic view of a hydrogen accumulation region in an example provided by the present invention;
FIG. 5 is a schematic diagram of sensor locations planned according to feature points in an embodiment provided by the present invention;
FIG. 6 is a schematic diagram of selected sensor locations after validation and parameter analysis by the virtual engine in an embodiment of the present invention;
fig. 7 is a block diagram of an optimization 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to 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 may 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 elements and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. 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 vehicle hydrogen sensor layout optimization method and system based on digital twins, which can detect hydrogen leakage of a hydrogen fuel vehicle as soon as possible by using as few sensors as possible, reduce the probability of harm caused by hydrogen leakage accidents and promote safe operation of the hydrogen fuel vehicle.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Fig. 1 and fig. 2 are a flowchart and an overall optimization flowchart of an optimization method in an embodiment provided by the present invention, respectively, and as shown in fig. 1 and fig. 2, the present invention provides a digital twin-based layout optimization method for a vehicular hydrogen sensor, including:
step 100: constructing a hydrogen leakage detection scene of a virtual hydrogen fuel passenger car;
step 200: performing hydrogen leakage position simulation based on the hydrogen leakage detection scene to obtain leakage data; the leak data includes hydrogen diffusion path data and hydrogen accumulation region data;
step 300: analyzing and summarizing the leakage data according to an edge calculation method to obtain characteristic points of the same hydrogen concentration under the condition of leakage at different positions;
step 400: planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets;
step 500: and arranging virtual hydrogen sensors in the virtual engine for verification simulation, optimizing the number of the sensors by combining the leakage data and the initial sensor arrangement position set, and performing parameter analysis to obtain an optimal vehicle sensor arrangement scheme.
Fig. 2 further includes after S500:
s600: and performing real sensor arrangement by the virtual arrangement, and verifying the sensor scheme.
Preferably, the step 100 comprises:
acquiring characteristic parameters of a real leakage scene; the characteristic parameters comprise: leak space shape and size, leak port geometry and size, leak location and leak rate;
and carrying out scene construction in a virtual engine according to the characteristic parameters to obtain the hydrogen leakage detection scene.
Specifically, in this embodiment, by means of a digital twin technology, a mapping of a virtual space is used to replace a hydrogen leakage detection test with a high risk and a high experimental cost, and according to a real leakage scene, a virtual hydrogen fuel passenger car hydrogen leakage detection scene is constructed by setting characteristic parameters such as a leakage space shape and a leakage port in Unity.
As shown in fig. 3, a plurality of leak locations may be set to simulate a real leak scene, for example, 5 leak locations are set in the present embodiment.
Preferably, the virtual engine is Unity.
Preferably, the step 200 comprises:
acquiring a plurality of preset hydrogen leakage positions;
performing ANSYS simulation according to the hydrogen leakage detection scene and the preset hydrogen leakage position to obtain initial data of a hydrogen concentration field formed by hydrogen leakage at different positions;
and screening the initial data according to a preset concentration change requirement to obtain the leakage data.
As shown in fig. 4, ANSYS simulation under the condition of various typical hydrogen leakage positions is performed according to the virtual detection scene, and initial data of hydrogen concentration fields formed by hydrogen leakage at different positions is obtained. And acquiring effective data in the initial data according to the concentration change requirement to obtain the data of the hydrogen diffusion path and the gathering area.
Preferably, the step 300 comprises:
and preprocessing the leakage data according to an edge calculation method to obtain a plurality of characteristic points.
Optionally, the hydrogen diffusion path data is embodied in a spatial range larger than a certain threshold at different times in the concentration field, and is used for planning a sensor position for detecting hydrogen leakage earlier at a certain leakage position, and the case is suitable for detecting initial hydrogen leakage. The data of the hydrogen gathering area is a hydrogen high concentration range (such as a hydrogen combustible range), the data of the gathering area is used for planning the installation position of the sensor after hydrogen leaks for a certain time, and the situation is suitable for the installation of a hydrogen sensor with a high detection threshold (the cost is lower than that of a sensor with a low detection threshold).
In particular, the characteristic points are, for example, coincident regions of high-concentration hydrogen gas in the case of leaks at two different locations, which regions require the presence of sensors, which ensures that leaks at multiple locations are detected with a minimum of sensors.
Preferably, the step 400 comprises:
and respectively judging whether the concentration data of the hydrogen condition of each spatial position point in the characteristic points is greater than a preset threshold value, and if so, marking the spatial position points as the initial sensor arrangement position set.
Specifically, in this embodiment, based on the hydrogen diffusion path data and the aggregation area data, these are preprocessed by edge calculation, feature points are extracted for data analysis, and the same hydrogen concentration distribution rule of the leakage conditions at different positions is summarized, so that the positions and the number of the key parameters of the sensor are planned according to the same, as shown in fig. 5, to design an expected hydrogen sensor arrangement scheme.
Preferably, the step 500 comprises:
arranging virtual hydrogen sensors in the virtual engine according to the leakage data and the initial sensor arrangement position set to carry out verification simulation, and obtaining the response time of the virtual hydrogen sensors in each initial sensor arrangement position set;
selecting the initial set of sensor arrangement locations with the response times within a preset response threshold range as an initial set of optimized locations;
analyzing the relation between the number of the virtual hydrogen sensors under different initial optimization position sets and the response time, and combining the leakage probability of the leakage positions to obtain the optimal number of the sensors;
and determining the optimal vehicle sensor layout scheme according to the optimal sensor number and the initial optimal position set.
Further, the analyzing the number of virtual hydrogen sensors at different sets of initial optimal locations versus the response time includes analyzing a probability of a leak at a leak location. The selected number of the final sensors is comprehensively considered by three factors of the system response time, the number of the hydrogen sensors and the leakage probability, and the result of the leakage probability multiplied by the system response time/the number of the sensors is used as a judgment index.
Optionally, the hydrogen sensors are virtually arranged at Unity in combination with the simulation data and the expected sensor arrangement scheme, and the response speed and monitoring efficiency of detecting hydrogen leakage of each scheme are evaluated. Firstly, evaluating the position of a sensor, and exploring the response time of the hydrogen sensor under different hydrogen leakage position conditions; after the scheme that the response time of the sensor installation position is short is selected, the number of Unity sensors is optimized, the relationship between the number of sensors and the response time at different positions is comprehensively analyzed, and as shown in fig. 6, the minimum number of sensors is determined on the premise that the effectiveness of hydrogen leakage safety monitoring is guaranteed. In addition, the economical efficiency of the hydrogen sensor is considered, the number cost performance of the sensors is considered, and a proper vehicle sensor layout scheme is selected.
Specifically, in the present embodiment, concentration data of hydrogen conditions at different leakage positions is input, a high-concentration hydrogen region that appears multiple times (or a concentration threshold value that is higher than a certain time) is obtained, and N possible position points of the sensor are output. And the next step is to verify the output position in Unity, and the better result of the verification is selected for the next step of verifying the number of the sensors.
Further, the calculation parameters for ensuring the effectiveness of the hydrogen leakage safety monitoring include: the time at which the sensor detects a leak, and the number of sensors that detect a hydrogen leak in M seconds, or the ratio of the number of sensors to the detection time.
Still further, the result of the leakage probability x the system response time/number of sensors is used as a judgment index, so as to detect the hydrogen leakage with the least number of sensors at the same time (or detect the leakage as early as possible with the same number of sensors), and allow for leakage accidents at more leakage positions. The higher the value, the more cost-effective the sensor will be.
Fig. 7 is a block connection diagram of an optimization system in an embodiment of the present invention, and as shown in fig. 2, the present invention further provides a digital twin-based layout optimization system for a vehicular hydrogen sensor, including:
the building module is used for building a hydrogen leakage detection scene of the virtual hydrogen fuel passenger car;
the simulation module is used for simulating a hydrogen leakage position based on the hydrogen leakage detection scene to obtain leakage data; the leak data includes hydrogen diffusion path data and hydrogen accumulation region data;
the preprocessing module is used for analyzing and summarizing the leakage data according to an edge calculation method to obtain characteristic points of the same hydrogen concentration under the condition of leakage at different positions;
the planning module is used for planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets;
and the optimization module is used for optimizing the number of the sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor arrangement scheme.
Preferably, the building module specifically includes:
the parameter acquisition unit is used for acquiring the characteristic parameters of the real leakage scene; the characteristic parameters comprise: leakage space shape and size, leakage port geometry and size, leakage rate and leakage position;
and the construction unit is used for constructing a scene in a virtual engine according to the characteristic parameters to obtain the hydrogen leakage detection scene.
Preferably, the simulation module specifically includes:
an acquisition unit configured to acquire a plurality of preset hydrogen leakage positions;
the simulation unit is used for carrying out ANSYS simulation according to the hydrogen leakage detection scene and the preset hydrogen leakage position to obtain initial data of hydrogen concentration fields formed by hydrogen leakage at different positions;
and the data processing unit is used for screening the initial data according to the preset concentration change requirement to obtain the leakage data.
The invention has the following beneficial effects:
(1) According to the invention, the mapping of the hydrogen leakage detection scene is completed in the virtual space, so that casualties caused by accidents of the hydrogen leakage test are avoided, and the complex labor, material and time costs are saved.
(2) According to the invention, the hydrogen concentration data is preprocessed by using the edge calculation algorithm, and the hydrogen concentration characteristic points under different leakage positions are extracted and summarized by the algorithm, so that redundant time-consuming manual analysis data processing work is avoided.
(3) The method has strong universality, and can also use the sensor layout work for other leakage monitoring scenes by changing the scene layout and the related algorithm.
(4) The optimization of the detection efficiency of the hydrogen leakage sensor can reduce the probability of harm caused by hydrogen leakage accidents, promote the safe operation of the hydrogen fuel vehicle, strengthen the trust of people on the hydrogen fuel vehicle and accelerate the perfection construction of a hydrogen energy industrial chain.
The embodiments in the present description 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 description of the method part.
The principle and the embodiment of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea 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 (4)
1. A layout optimization method for a vehicle hydrogen sensor based on digital twinning is characterized by comprising the following steps:
constructing a hydrogen leakage detection scene of a virtual hydrogen fuel passenger car;
the hydrogen leakage detection scene for constructing the virtual hydrogen fuel passenger car comprises the following steps:
acquiring characteristic parameters of a real leakage scene; the characteristic parameters comprise: leakage space shape and size, leakage port geometry and size, leakage rate and leakage position;
scene construction is carried out in a virtual engine according to the characteristic parameters to obtain the hydrogen leakage detection scene;
performing hydrogen leakage position simulation based on the hydrogen leakage detection scene to obtain leakage data; the leak data includes hydrogen diffusion path data and hydrogen accumulation region data;
the hydrogen leakage position simulation is carried out based on the hydrogen leakage detection scene to obtain leakage data, and the method comprises the following steps:
acquiring a plurality of preset hydrogen leakage positions;
performing ANSYS simulation according to the hydrogen leakage detection scene and the preset hydrogen leakage position to obtain initial data of a hydrogen concentration field formed by hydrogen leakage at different positions;
screening the initial data according to a preset concentration change requirement to obtain the leakage data;
analyzing and summarizing the leakage data according to an edge calculation method to obtain characteristic points of the same hydrogen concentration under the condition of leakage at different positions;
planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets;
planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets, including:
respectively judging whether the concentration data of the hydrogen condition of each spatial position point in the characteristic points is greater than a preset threshold value, if so, marking the spatial position point as the initial sensor arrangement position set;
optimizing the number of the sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor layout scheme;
the analyzing and summarizing of the leakage data according to the edge calculation method to obtain the characteristic points of the same hydrogen concentration under the condition of different position leakage comprises the following steps:
and preprocessing the leakage data according to an edge calculation method to obtain a plurality of characteristic points.
2. The vehicular hydrogen sensor layout optimization method according to claim 1, wherein the virtual engine is Unity.
3. The vehicle hydrogen sensor layout optimization method according to claim 1, wherein the optimizing the number of sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor layout scheme comprises:
arranging virtual hydrogen sensors in the virtual engine according to the leakage data and the initial sensor arrangement position set to carry out verification simulation, and obtaining the response time of the virtual hydrogen sensors in each initial sensor arrangement position set;
selecting the initial sensor arrangement position set with the response time within a preset response threshold value range as an initial optimization position set;
analyzing the relation between the number of the virtual hydrogen sensors under different initial optimization position sets and the response time to obtain the optimal number of the sensors;
and determining the optimal vehicle sensor layout scheme according to the optimal sensor number and the initial optimal position set.
4. A digital twin-based layout optimization system for a vehicular hydrogen sensor, comprising:
the building module is used for building a hydrogen leakage detection scene of the virtual hydrogen fuel passenger car;
the building module specifically comprises:
the parameter acquisition unit is used for acquiring the characteristic parameters of the real leakage scene; the characteristic parameters comprise: leak space shape and size, leak port geometry and size, leak rate and leak location;
the construction unit is used for carrying out scene construction in a virtual engine according to the characteristic parameters to obtain the hydrogen leakage detection scene;
the simulation module is used for simulating a hydrogen leakage position based on the hydrogen leakage detection scene to obtain leakage data; the leak data includes hydrogen diffusion path data and hydrogen accumulation region data;
the simulation module specifically comprises:
an acquisition unit configured to acquire a plurality of preset hydrogen leakage positions;
the simulation unit is used for carrying out ANSYS simulation according to the hydrogen leakage detection scene and the preset hydrogen leakage position to obtain initial data of hydrogen concentration fields formed by hydrogen leakage at different positions;
the data processing unit is used for screening the initial data according to the preset concentration change requirement to obtain the leakage data;
the preprocessing module is used for analyzing and summarizing the leakage data according to an edge calculation method to obtain characteristic points of the same hydrogen concentration under the condition of leakage at different positions;
the planning module is used for planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets;
planning the positions of the sensors according to the characteristic points to obtain a plurality of initial sensor arrangement position sets, including:
respectively judging whether the concentration data of the hydrogen conditions of all the spatial position points in the characteristic points are greater than a preset threshold value, if so, marking the spatial position points as the initial sensor arrangement position set
The optimization module is used for optimizing the number of the sensors by combining the leakage data and the initial sensor arrangement position set to obtain an optimal vehicle sensor arrangement scheme;
the analyzing and summarizing of the leakage data according to the edge calculation method to obtain the characteristic points of the same hydrogen concentration under the condition of different position leakage comprises the following steps:
and preprocessing the leakage data according to an edge calculation method to obtain a plurality of characteristic points.
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| CN111783696A (en) * | 2020-07-06 | 2020-10-16 | 广东电网有限责任公司 | Edge calculation method for low-voltage branch topology real-time analysis based on PV relation |
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