CN114814117A - Method, device, equipment and storage medium for evaluating vehicle cabin gas - Google Patents
Method, device, equipment and storage medium for evaluating vehicle cabin gas Download PDFInfo
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Abstract
The application relates to the technical field of gas detection, and provides a method, a device, equipment and a storage medium for evaluating the gas in a vehicle cabin, which can detect the gas in real time and effectively improve the evaluation efficiency of the gas in the vehicle cabin. The method comprises the following steps: triggering a purified gas supply module to input purified gas into a cabin of the vehicle to be detected; when the gas concentration of a target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, stopping inputting a purified gas into the vehicle cabin, and acquiring first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped to be supplied; and acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
Description
Technical Field
The present application relates to the field of gas detection technologies, and in particular, to a method, an apparatus, a computer device, a storage medium, and a computer program product for evaluating a gas in a cabin of a vehicle.
Background
With the popularization of vehicles such as automobiles and high-speed trains in life, environmental health inside the vehicles is receiving more attention. In order to optimize the internal environment of the vehicle and improve the air quality, the release condition of the gas in the vehicle is often detected.
In the related art, the gas release condition in the vehicle cabin can be detected by using an off-line method, that is, a gas sample in the vehicle or the ship cabin is firstly collected and then the gas sample is transferred to a laboratory for analysis. However, the real-time performance of the detection method is poor, and the change condition of the gas in the cabin of the vehicle is difficult to reflect in time.
Disclosure of Invention
In view of the above, it is necessary to provide a vehicle cabin gas evaluation method, apparatus, computer device, storage medium and computer program product for addressing the above technical problems.
In a first aspect, the present application provides a vehicle cabin gas assessment method, the method comprising:
triggering a purified gas supply module to input purified gas into a cabin of the vehicle to be detected;
when the gas concentration of a target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, stopping inputting a purified gas into the vehicle cabin, and acquiring first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped to be supplied;
and acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
In one embodiment, obtaining the first gas concentration of the target gas in the vehicle compartment at a plurality of times after the supply of the purge gas is stopped comprises:
obtaining a first gas concentration of the target gas in the vehicle cabin at a preset time interval after the supply of the purge gas is stopped;
and when the target gas is determined to be in a release equilibrium state according to the plurality of first gas concentrations, stopping collecting the first gas concentrations of the target gas, and taking each currently collected first gas concentration as the first gas concentrations of the target gas at a plurality of moments.
In one embodiment, after the obtaining the first gas concentration of the target gas in the vehicle cabin at a preset time interval after the stopping of the supply of the purge gas, the method further includes:
obtaining the release rate of the target gas in the vehicle cabin according to the obtained concentration of each first gas;
and if the release rate is less than the preset release rate, determining that the target gas is in a release equilibrium state.
In one embodiment, the obtaining a gas evaluation of the vehicle compartment based on a plurality of first gas concentrations of the target gas within the vehicle compartment comprises:
determining a gas concentration and a release rate of the target gas in a release equilibrium state according to a plurality of first gas concentrations of the target gas;
determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the gas concentration and the release rate of the target gas in the release equilibrium state;
generating a concentration variation curve of the target gas according to the plurality of first gas concentrations and the second gas concentration of the target gas;
and acquiring a gas evaluation result of the vehicle cabin according to the concentration change curve.
In one embodiment, the determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the gas concentration and the release rate of the target gas in the release equilibrium state comprises:
determining an equilibrium state time point when the target gas enters a release equilibrium state and the future preset time of the concentration of the gas to be predicted;
acquiring a time difference value between the future preset time and the equilibrium state time point, and determining the concentration variation from the equilibrium state time point to the future preset time according to the time difference value and the release rate of the target gas;
and determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the concentration variation and the gas concentration of the target gas in the release equilibrium state.
In one embodiment, the obtaining the gas estimation result of the vehicle cabin according to the concentration variation curve comprises:
for each vehicle cabin, acquiring a gas release parameter of the target gas in the vehicle cabin based on a concentration change curve of the vehicle cabin, and determining a gas mass fraction of the vehicle cabin according to the gas release parameter;
and sequencing the gas mass fractions of the vehicles, and obtaining the gas evaluation results of the compartments of the vehicles according to the sequencing results and the concentration change curve.
In one embodiment, after the triggering purge gas supply module inputs purge gas into the cabin of the vehicle to be detected, the method further comprises the following steps:
after purified gas is input into the vehicle cabin, acquiring a third gas concentration of target gas to be detected in the vehicle cabin;
determining a dilution rate of the target gas within the vehicle compartment from the third gas concentration;
and if the dilution rate is smaller than a preset dilution rate, determining that the gas concentration of the target gas is reduced to the background equilibrium concentration.
In a second aspect, the present application also provides a vehicle cabin gas evaluation apparatus, the apparatus comprising:
the gas delivery module is used for triggering the purified gas supply module to input purified gas into the cabin of the vehicle to be detected;
the first gas concentration acquisition module is used for stopping inputting purified gas into the vehicle cabin when the gas concentration of target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, and acquiring the first gas concentration of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped being supplied;
and the gas evaluation result acquisition module is used for acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
In a third aspect, the present application also provides a vehicle cabin gas evaluation apparatus comprising a memory storing a computer program and a processor implementing the steps of the method as described above when the processor executes the computer program.
In a fourth aspect, the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method as described above.
In a fifth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of the method as described above.
The vehicle cabin gas evaluation method, the device, the computer equipment, the storage medium and the computer program product can trigger the purified gas supply module to input the purified gas into the vehicle cabin to be detected, when the gas concentration of the target gas to be detected in the vehicle cabin is reduced to the background equilibrium concentration, the purified gas is stopped from being input into the vehicle cabin, the first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the supply of the purified gas is stopped are obtained, and then the gas evaluation result of the vehicle cabin can be obtained according to the plurality of first gas concentrations of the target gas in the vehicle cabin. The scheme of this embodiment, through to the vehicle cabin input purge gas, can replace the gaseous in the vehicle cabin rapidly, make and get into the few clean state of target gas fast in the vehicle cabin, then gaseous sampling module of rethread gathers the gaseous and carry out real-time detection to gaseous through detection module in the vehicle cabin, acquires gaseous evaluation result, effectively promotes the gaseous efficiency of appraising of vehicle cabin.
Drawings
FIG. 1 is a diagram of an exemplary embodiment of a vehicle cabin gas evaluation method;
FIG. 2 is a schematic flow diagram of a method for evaluating cabin gas in a vehicle according to one embodiment;
FIG. 3 is a schematic flow chart illustrating a step of obtaining a first gas concentration in one embodiment;
FIG. 4 is a schematic flow chart illustrating one embodiment of the steps for obtaining a gas evaluation;
FIG. 5 is a graph of concentration change in one embodiment;
FIG. 6 is a block diagram showing the structure of a cabin gas evaluation device in one embodiment;
fig. 7 is an internal structural view of a vehicle cabin gas evaluation apparatus in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In order to facilitate understanding of the embodiments of the present invention, a method of detecting gas in a vehicle compartment in the related art will be described. In the related art, an off-line method is often used for detecting the gas release condition in a vehicle cabin, when the method is used, the detected vehicle cabin is kept standing in a sampling environment cabin for not less than 6 hours, then the vehicle cabin is kept standing for 16 hours in a sealed mode, then a sampling pipe is used for sampling, and after the gas sample is collected, the gas sample is transferred to a laboratory for analysis. Therefore, in the related technology, the sampling and transferring detection are carried out after the standing for a very long time, the operation is complicated, and the real-time performance is poor. Based on this, the present application provides a vehicle cabin gas assessment method.
The method for evaluating the gas in the vehicle cabin provided by the embodiment of the application can be applied to a device for evaluating the gas in the vehicle cabin shown in fig. 1. The detection device of the vehicle cabin gas may comprise:
the purge gas supply module 120, the purge gas supply module 120 may have a gas supply outlet, the gas supply outlet may be communicated with a vehicle cabin to be detected, meanwhile, the interior of the vehicle cabin 110 is communicated with the exterior, the purge gas supply module 120 may input purge gas to the vehicle cabin 110 through the gas supply outlet, during the process that the purge gas supply module 120 inputs purge gas to the vehicle cabin 110, original gas in the vehicle cabin may be gradually exhausted to the exterior of the vehicle cabin, and then when the gas concentration of the target gas to be detected inside the vehicle cabin 110 drops to the background equilibrium concentration, the purge gas supply module 120 may stop inputting purge gas to the vehicle cabin 110. The purge gas supply module 120 can rapidly remove the original gas in the vehicle cabin by continuously inputting purge gas into the vehicle cabin 110, and the removed gas may include the target gas to be detected generated when the vehicle cabin 110 is placed, and rapidly replace the gas in the vehicle cabin by using the purge gas, so as to avoid long-time standing and sealing, and rapidly make the air in the vehicle cabin in a clean state, which may also be referred to as a background state, which may be understood as a state where there is no target gas in the vehicle cabin 110 or the target gas concentration is extremely low (i.e., falls to a background equilibrium concentration).
For example, the purge gas supply module 120 may include a purge gas output device 121, a flow controller 122, and a purge gas 123, for example, the purge gas generated by the purge gas output device 121 may be air, the generated air may be output to the supply gas outlet after passing through the flow controller 123, and the gas delivery flow rate of the purge gas may be adjusted by the flow controller 122.
The detection apparatus further includes a gas sampling module 130, the gas sampling module 130 is disposed inside the vehicle compartment 110 and is configured to collect gas inside the vehicle compartment 110, and the gas sampling module 130 is configured to collect gas inside the vehicle compartment 120 after the purge gas supply module 120 stops supplying purge gas into the compartment of the vehicle compartment 120.
In other words, the gas sampling module 130 may recapture gas inside the vehicle compartment 110 when the gas concentration of the target gas inside the vehicle compartment 110 drops to the background equilibrium concentration and the purge gas is no longer input into the vehicle compartment 110. After the purge gas supply module 120 stops supplying purge gas, the interior of the vehicle cabin 110 is mainly purged gas at the beginning, no target gas or little target gas is generated inside the vehicle cabin 110, and the gas sampling module 130 continuously collects gas inside the vehicle cabin 110 after the purge gas supply stops, and the generation condition and the change condition of the target gas inside the vehicle cabin 110 can be determined by detecting the gas.
The detection device further comprises a detection module 140, wherein the detection module 140 can be independent of the vehicle cabin and is connected with the gas sampling module 130, and can receive the gas in the vehicle cabin 110 collected by the gas sampling module 130, so that the collected gas can be analyzed, the gas concentration of the target gas in the vehicle cabin 110 is determined according to the gas collected by the gas sampling module 130, and the gas evaluation result is obtained according to the gas concentration.
In one embodiment, as shown in fig. 2, a method for detecting gas in a vehicle cabin is provided, which is illustrated by applying the method to the detection module in fig. 1, and may include the following steps:
and S210, triggering the purified gas supply module to input purified gas into the cabin of the vehicle to be detected.
In practical applications, the purge gas supply module may be triggered to input purge gas into the vehicle cabin, for example, a gas supply command may be sent to the purge gas supply module, which triggers the purge gas supply module to input purge gas into the vehicle cabin.
S220, when the gas concentration of the target gas to be detected in the vehicle cabin is reduced to the background equilibrium concentration, the purified gas is stopped from being input into the vehicle cabin, and the first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped from being supplied are obtained.
In a specific implementation, it may be determined whether the gas concentration of the target gas to be detected in the vehicle cabin 110 is reduced to the background equilibrium concentration, and when the gas concentration of the target gas to be detected in the vehicle cabin 110 is reduced to the background equilibrium concentration, a supply stop instruction may be sent to the purified gas supply module 120, and the gas concentration of the target gas after supply of the purified gas is stopped may be obtained, where, to distinguish the gas concentration of the target gas determined at the other gas collection time, the gas concentration of the target gas in the vehicle cabin determined after supply of the purified gas is stopped is referred to as a first gas concentration.
Specifically, the detection module may determine that the target gas to be detected has a gas concentration that falls below a background equilibrium concentration within the vehicle compartment, sending a supply stop instruction to the purge gas supply module, controlling the purge gas supply module to stop inputting purge gas to the vehicle cabin, and after the purge gas supply has ceased, send a gas collection command to gas sampling module 130, trigger gas sampling module 130 to collect gas within vehicle cabin 110 at multiple times, and transmits the collected gas to the detection module 140, the detection module 140 can detect the target gas in the gas provided by the gas sampling module 130 after receiving the gas, and determines the gas concentration of the target gas in the vehicle compartment 110 at the time of gas collection based on the detection result, whereby the gas concentration of the target gas after the supply of purge gas is stopped can be obtained.
In practical applications, the purge gas supply module 120 can rapidly remove the original gas in the vehicle cabin by continuously inputting purge gas into the vehicle cabin 110, and the discharged gas may include the target gas to be detected generated when the vehicle cabin 110 is placed, and the purge gas is used to rapidly replace the gas in the vehicle cabin, so as to avoid standing and sealing for a long time, and rapidly make the air in the vehicle cabin in a clean state, which may also be referred to as a background state, which may be understood as a state where there is no target gas in the vehicle cabin 110 or where the concentration of the target gas is extremely low (i.e., falls to the background equilibrium concentration), and the gas concentration of the target gas in the background state may be referred to as the background equilibrium concentration.
After the purge gas supply module 120 stops supplying purge gas, the interior of the vehicle cabin 110 is mainly purged gas at the beginning, no target gas or little target gas is generated inside the vehicle cabin 110, and the gas sampling module 130 continuously collects gas inside the vehicle cabin 110 after the purge gas supply stops, and the generation condition and the change condition of the target gas inside the vehicle cabin 110 can be determined by detecting the gas.
And S230, acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
After the gas concentration of the target gas after the supply of the purge gas is stopped is obtained, the gas evaluation result of the vehicle cabin may be obtained based on the first gas concentration of the target gas after the supply of the purge gas is stopped. Specifically, for example, a gas concentration change curve of the target gas may be generated as the gas evaluation result according to the first gas concentrations of the target gas at the plurality of gas collection times, or a generation speed of the target gas in the vehicle compartment 110 may be determined according to the target gas concentration change curve, and the air quality condition in the vehicle compartment 110 may be determined according to the generation speed as the gas evaluation result.
In this embodiment, the purge gas supply module may be triggered to input purge gas into the vehicle cabin to be detected, when the gas concentration of the target gas to be detected in the vehicle cabin drops to the background equilibrium concentration, the purge gas supply to the vehicle cabin is stopped, and the first gas concentrations of the target gas in the vehicle cabin at multiple times after the supply of the purge gas is stopped are obtained, so that the gas evaluation result of the vehicle cabin may be obtained according to the multiple first gas concentrations of the target gas in the vehicle cabin. The scheme of this embodiment, through to the vehicle cabin input purge gas, can replace the gaseous in the vehicle cabin rapidly, make and get into the few clean state of target gas fast in the vehicle cabin, then gaseous sampling module of rethread gathers the gaseous and carry out real-time detection to gaseous through detection module in the vehicle cabin, acquires gaseous evaluation result, effectively promotes the gaseous efficiency of appraising of vehicle cabin.
In one embodiment, as shown in fig. 3, the obtaining S220 a first gas concentration of the target gas in the vehicle cabin at a plurality of times after the supply of the purge gas is stopped may include:
and S310, acquiring a first gas concentration of the target gas in the cabin of the vehicle according to a preset time interval after the supply of the purified gas is stopped.
In specific implementation, when the detection module sends a gas collection instruction to the gas sampling module 130, the detection module may instruct the gas sampling module 130 to obtain gas in the vehicle cabin 110 according to preset time and convey the gas to the sampling module, and then the detection module may detect the currently obtained gas according to the preset time, so as to determine the first gas concentration of the target gas in the vehicle cabin 110 at a plurality of periodic gas sampling moments. Wherein, a person skilled in the art can determine the preset time interval according to practical situations, for example, the gas sampling module 130 can sample once per second or every minute, and the detection module 130 can obtain the first gas concentration in the order of seconds or minutes.
S320, when the target gas is determined to be in the release equilibrium state according to the plurality of first gas concentrations, stopping collecting the first gas concentrations of the target gas, and obtaining the first gas concentrations of the target gas at a plurality of moments according to the currently collected first gas concentrations.
The release equilibrium state can be understood as that the first gas concentration in the cabin of the vehicle is in dynamic equilibrium, the concentration change information of the first gas concentration is smaller than a preset threshold value, and the first gas concentration does not change obviously in a short time.
Specifically, the interior of the vehicle compartment 110 is communicated with the exterior, and after the supply of the purge gas is stopped, the interior of the vehicle compartment 110 is not increased, but the target gas is still generated by components in the vehicle compartment 110 (such as adhesive on passenger seats or other components), so that a part of the gas in the interior of the vehicle compartment 110 can be exhausted, wherein the exhausted gas may include the target gas, and when the exhaust amount of the target gas is equal to or approximately equal to the generated amount of the target gas, the first gas concentration of the target gas in the vehicle compartment 110 does not change significantly, so as to reach the equilibrium state of release. Furthermore, when the target gas is determined to be in the release equilibrium state according to the plurality of first gas concentrations, because the obvious change of the first gas concentrations is difficult to observe even if the gas concentrations of the target gas are continuously obtained, the collection of the first gas concentrations of the target gas can be stopped, and the currently collected first gas concentrations can be used as the first gas concentrations of the target gas at a plurality of moments.
In this embodiment, when determining that the target gas is in the release equilibrium state according to the plurality of first gas concentrations, the method can stop collecting the first gas concentrations of the target gas, and uses the currently collected first gas concentrations as the first gas concentrations of the target gas at a plurality of moments, thereby avoiding consuming equipment processing resources to continuously obtain the first gas concentrations with slight changes, being beneficial to saving the detection time of the vehicle cabin gas, avoiding wasting detection resources, and effectively improving the detection efficiency.
In one embodiment, after S310, the method may further include the steps of:
obtaining the release rate of the target gas in the cabin of the vehicle according to the obtained concentration of each first gas; and if the release rate is less than the preset release rate, determining that the target gas is in a release equilibrium state.
In practical applications, the release rate of the target gas in the vehicle cabin can be determined according to the currently acquired concentration of each first gas. For example, if the gas sampling time Tm specifies the gas concentration of the target gas as Cm and the gas sampling time Tn specifies the gas concentration of the target gas as Cn, the concentration difference Δ C and the time difference Δ T can be specified, where Δ C is Cn-Cm and Δ T is Tn-Tm, and the release rate Δ V of the target gas can be specified as Δ V is Δ C/Δ T.
After the release rate of the target gas is obtained, it may be determined whether the current release rate is smaller than a preset release rate, if so, it may be determined that the target gas in the vehicle cabin 110 is in a release equilibrium state, and if not, it may be determined that the target gas has not entered the release equilibrium state, and the first gas concentration of the target gas may be continuously monitored. Illustratively, the preset release rate may be a value approaching 0, which may be selected by one skilled in the art based on the actual situation.
In this embodiment, whether the target gas is in a release equilibrium state can be quickly determined by determining whether the release rate of the target gas is less than the preset release rate, so that whether the gas in the vehicle cabin 110 needs to be stopped from being continuously collected can be determined in time, and resource waste is avoided.
In one embodiment, as shown in fig. 4, the step S230 of obtaining the gas estimation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin may include the following steps:
and S410, determining the gas concentration and the release rate of the target gas in a release equilibrium state according to the plurality of first gas concentrations of the target gas.
Specifically, after a plurality of first gas concentrations of the target gas are obtained, whether the target gas is in a release equilibrium state or not may be determined according to the plurality of first gas concentrations, when it is detected that the target gas is in the release equilibrium state, the first gas concentration of the target gas when the target gas enters the release equilibrium state may be used as the gas concentration, and the release rate of the target gas in the release equilibrium state may be determined according to the first gas concentrations at a plurality of gas sampling times before the target gas enters the release equilibrium state.
And S420, determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the gas concentration and the release rate of the target gas in the release equilibrium state.
Wherein the second gas concentration is a gas concentration estimated from a future preset time of the target gas.
After entering the release equilibrium state, the release rate of the target gas in the vehicle compartment 110 may be considered to be substantially unchanged, and therefore, the gas concentration of the target gas at the future time may be predicted according to the gas concentration and the release rate of the target gas when entering the release equilibrium state, and the second gas concentration at the future preset time in the release equilibrium state may be determined.
S430, generating a concentration change curve of the target gas according to the plurality of first gas concentrations and the second gas concentrations of the target gas.
After one or more second gas concentrations are obtained, a concentration change curve of the target gas can be generated according to the first gas concentration and the second gas concentration at different moments.
For example, a concentration change curve may be shown in fig. 5, which may also be referred to as a YZQ curve according to the abbreviation of the inventor's name. Where T0 denotes the point in time when the charging is stopped, i.e. when the purge gas supply module 120 stops providing purge gas to the vehicle compartment 110; T1-T2 represents a period of time approaching the release equilibrium state; T2-T3 represents the time period for ideal release of equilibrium conditions; c0 represents the first gas concentration of the target gas when the background state is reached, the gas concentration at this time may also be referred to as the background equilibrium concentration; C1-C2 represent concentrations approaching release equilibrium; Δ T represents a time difference; Δ C represents a concentration difference; Δ V represents the release rate.
As shown in fig. 4, the concentration change curve reflects the change in the concentration of the target gas after the vehicle compartment 110 enters the release equilibrium state from the start of purge gas charging. The concentration profile includes a background equilibration phase and a release equilibration phase.
In the background balance phase, starting from the stage that the purge gas supply module 120 starts to inflate the vehicle cabin 110, the curve trend decreases after inflation, after a period of time, the background state is reached, the gas concentration of the target gas in the local state is C0, the curve trend is stable, and the local balance phase is ended.
In the release equilibrium stage, the inflation is stopped from the time T0, the curve rises rapidly, after the time T1, the release equilibrium state is approached, the rising rate of the target gas concentration tends to be flat, and after the time T2, the ideal release equilibrium state is reached.
The gas concentration of the target gas at time 0-T2 in fig. 5 may be determined based on the first gas concentration, that is, the gas concentration of the target gas at time 0-T2 may be obtained by analyzing the gas obtained by gas sampling module 130 during this time period, and the gas concentration of the target gas after T2 may be estimated based on the gas concentration and the release rate when the target gas is in the release equilibrium state, that is, the gas concentration after T2 is obtained based on the second gas concentration.
In an actual test, T1-T3 is slowly increased, the deviation is not more than 10%, if the concentration change of the target gas in the T2-T3 time period is completely tested, the time is long, therefore, the time period when T1-T2 approaches the release equilibrium state can be regarded as the release equilibrium state, only the first gas concentration of T1-T2 is tested, the second gas concentration after the T2 time is predicted based on the first gas concentration of T1-T2, and the transition from the background state to the release equilibrium state can be completed within 10-15 minutes, therefore, the detection time of the target gas in the cabin of the vehicle can be obviously shortened through the method of the embodiment, and the air quality condition in the vehicle can be quickly evaluated in a short time. During the test, if the gas in the vehicle cabin 110 is continuously detected after T2, after T3, the gas in the vehicle cabin 110 is continuously extracted, so that the air is flushed into the outside of the vehicle cabin 110, and the concentration of the gas is slightly reduced during the actual test.
And S440, acquiring a gas evaluation result of the vehicle cabin according to the concentration change curve.
In practical application, after the concentration variation curve of the target gas is obtained, the gas evaluation result of the vehicle cabin can be obtained according to the concentration variation curve. Specifically, for example, the concentration change curve may be directly used as the gas estimation result, or the concentration change curve may be further analyzed to obtain the gas estimation result of the vehicle compartment based on the analysis result.
Illustratively, the gas evaluation result may be a gas concentration of the target gas within a predetermined time in the future (e.g., 1-4 hours after entering a release equilibrium state), which may reflect a daily air quality level of the vehicle cabin and alert passengers of a real-time pollutant concentration in the vehicle cabin, and in particular implementations, the gas evaluation result may be applied to various aspects, such as an intelligent alert, an early warning alarm, an intelligent purification system, and the like.
In the embodiment, the second gas concentration of the target gas in the release equilibrium state within the future preset time is determined according to the gas concentration and the release rate of the target gas in the release equilibrium state, the concentration change curve of the target gas is generated according to the plurality of first gas concentrations and the second gas concentrations of the target gas, the gas evaluation result of the vehicle cabin is obtained according to the concentration change curve, the gas concentration is guaranteed to be reliable, the detection time is effectively shortened, and the evaluation efficiency of the air quality of the vehicle cabin is improved.
In one embodiment, the step S420 of determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the gas concentration and the release rate of the target gas in the release equilibrium state may include the following steps:
determining an equilibrium state time point when the target gas enters a release equilibrium state and the future preset time of the concentration of the gas to be predicted; acquiring a time difference value between a future preset time and an equilibrium state time point, and determining the concentration variation from the equilibrium state time point to the future preset time according to the time difference value and the release rate of the target gas; and determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the concentration variation and the gas concentration of the target gas in the release equilibrium state.
Wherein the equilibrium state time point may be a time point at which the target gas has just entered a gas release equilibrium state; the future preset time may be a point in time after the equilibrium state point in time.
In practical application, after the target gas is detected to enter the release equilibrium state, the equilibrium state time point of the target gas entering the gas release equilibrium state can be recorded, and the future preset time of the gas concentration to be predicted is obtained.
And further, a time difference between the future preset time and the equilibrium state time point can be obtained, and the concentration variation from the equilibrium state time point to the future preset time is determined according to the time difference and the release rate of the target gas. For example, if the time difference between the preset time T and the time point T2 of the equilibrium state is Δ T 'and the release rate is Δ V, the concentration change Δ C of the target gas between the time periods T2-T can be determined according to the product of Δ T' and Δ C.
After the concentration variation of the target gas is obtained, the second gas concentration of the target gas in the release equilibrium state for a preset time in the future may be determined according to the concentration variation and the gas concentration of the target gas in the release equilibrium state, for example, the second gas concentration may be determined according to the sum of the concentration variation and the gas concentration of the target gas in the release equilibrium state.
In the embodiment, according to the concentration variation and the gas concentration of the target gas in the release equilibrium state, the second gas concentration of the target gas in the release equilibrium state for the preset time in the future is determined quickly and accurately, and the detection time of the vehicle cabin is effectively shortened.
In one embodiment, after triggering the purge gas supply module to input purge gas into the cabin of the vehicle to be inspected S210, the method may further include the steps of:
after purified gas is input into the vehicle cabin, acquiring a third gas concentration of the target gas to be detected in the vehicle cabin; determining a dilution rate of the target gas in the vehicle compartment based on the third gas concentration; and if the dilution rate is less than the preset dilution rate, determining that the gas concentration of the target gas is reduced to the background equilibrium concentration.
The third gas concentration may be a gas concentration of the target gas in the cabin of the vehicle detected from the start of the purge gas supply to the vehicle to the stop of the purge gas supply.
In practical application, after the purified gas is input into the vehicle cabin, the gas concentration of the target gas to be detected in the vehicle cabin, that is, the third gas concentration may be obtained, and when the third gas concentration is obtained, the gas in the vehicle cabin may be collected according to a preset time interval after the purified gas is input, and the target gas in the gas is detected to determine the third gas concentration.
In combination with the plurality of third gas concentrations at different times, the dilution rate of the target gas in the vehicle cabin may be determined, and specifically, the difference Δ C between the third gas concentrations at two different times and the time Δ T at the two times may be determined, and then the current dilution rate of the target gas may be determined according to the ratio of Δ C to Δ T.
After the dilution rate is obtained, the dilution rate may be compared with a preset dilution rate, and if the current dilution rate is still greater than or equal to the preset dilution rate, it may be determined that the gas concentration of the target gas in the vehicle cabin is still continuously decreasing, and the gas concentration of the target gas still has a decreasing interval, and at this time, purge gas may be continuously input into the vehicle cabin. If the current dilution rate is smaller than the preset dilution rate, it can be determined that the gas concentration of the target gas is reduced more slowly, and then it is determined that the gas concentration of the target gas is reduced to the background equilibrium concentration.
In this embodiment, after the purified gas is started to be input into the vehicle cabin, the third gas concentration of the target gas to be detected in the vehicle cabin is continuously obtained, the dilution rate of the target gas in the vehicle cabin is determined according to the third gas concentration, if the dilution rate is smaller than the preset dilution rate, it is determined that the gas concentration of the target gas is reduced to the background equilibrium concentration, whether the gas concentration of the target gas is reduced to the background equilibrium concentration can be accurately monitored, the purified gas is conveniently and timely stopped being conveyed to the vehicle cabin, and the test cost is saved.
Of course, in another embodiment, the gas transmission amount required when the target gas concentration is reduced to the background equilibrium concentration may be counted as the preset gas transmission amount, and then, when the subsequent test is performed, if the gas transmission amount of the purified gas reaches the preset gas transmission amount, it is determined that the target gas concentration in the vehicle cabin is reduced to the background equilibrium concentration.
In one embodiment, the step S440 of obtaining the gas estimation result of the vehicle cabin according to the concentration variation curve may include the following steps:
for each vehicle cabin, acquiring gas release parameters of target gas in the vehicle cabin based on a concentration change curve of the vehicle cabin, and determining the gas mass fraction of the vehicle cabin according to the gas release parameters; and sequencing the gas mass fractions of the vehicles, and obtaining the gas evaluation results of the compartments of the vehicles according to the sequencing results and the concentration change curve.
As an example, the gas release parameter may be a curve parameter obtained from a concentration variation curve, and the gas release parameter may include at least one of the following: release concentration, release equilibrium time, average release rate, and release concentration of the first factor, for example, the concentration variation curve shown in fig. 5, the release concentration can be a 75% quantile value between gas concentrations C1-C2; taking the releasing balance time from T2 to T0; taking the average release rate as (C2-C0)/(T2-T0); the first factor release concentration is the highest first gas concentration, and if a plurality of target gases are detected simultaneously, the first gas concentration with the highest value can be used as the first factor release concentration from the first gas concentrations of the plurality of target gases.
In practical application, a plurality of different vehicle cabins can be tested, so that concentration change curves of the plurality of vehicle cabins can be obtained, further, for each vehicle cabin, a gas release parameter of target gas in the vehicle cabin can be obtained based on the concentration change curve of the vehicle cabin, and the gas mass fraction of the vehicle cabin is determined according to the gas release parameter.
Specifically, when determining the gas mass fraction according to the gas release parameters, the ranking of each gas release parameter of the vehicle cabin in the same type of gas release parameters may be obtained, for example, for the release concentration, the release concentrations of a total of M vehicle cabins may be obtained, and then the ranking of the release concentration of each vehicle cabin may be obtained by performing ascending ranking. Further, for a vehicle compartment, the gas mass fraction of the vehicle compartment may be determined in combination with a ranking of a plurality of gas release parameters thereof. Illustratively, the gas mass fraction may be determined by the equation if:
CAQI＝(R1+R2+R3+R4)/A
wherein, CAQI is gas mass fraction, also called health comprehensive index, R1 is the release concentration ranking of the vehicle cabin, R2 is the average release rate ranking, and R3 is the release equilibrium time ranking; r4 is the top factor concentration ranking; a is the total number of test samples, i.e. the number of tested vehicle compartments.
After the gas mass fraction of each vehicle cabin is obtained, the gas mass fractions of the vehicles can be sorted, and the gas evaluation results of the vehicle cabins are generated according to the sorting results and the concentration change curves. In the concrete implementation, the sequencing of the gas quality scores can be continuously updated according to the continuous increase of the number of the detected vehicle cabins, and the dynamic updating of the sequencing result and the gas evaluation result is realized.
It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the present application further provides a vehicle cabin gas evaluation device for implementing the vehicle cabin gas evaluation method. The solution provided by the device is similar to the solution described in the above method, so the specific limitations in one or more embodiments of the vehicle cabin gas evaluation device provided below can be referred to the limitations of the above vehicle cabin gas evaluation method, and are not described herein again.
In one embodiment, as shown in fig. 6, there is provided a vehicle cabin gas evaluation device including:
the gas delivery module 601 is used for triggering the purified gas supply module to input purified gas into the cabin of the vehicle to be detected;
a first gas concentration obtaining module 602, configured to stop inputting purified gas into the vehicle cabin when a gas concentration of a target gas to be detected in the vehicle cabin falls to a background equilibrium concentration, and obtain first gas concentrations of the target gas in the vehicle cabin at multiple times after supply of the purified gas is stopped;
a gas evaluation result obtaining module 603, configured to obtain a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
In one embodiment, the first gas concentration acquisition module 602 is configured to:
obtaining a first gas concentration of the target gas in the vehicle cabin at a preset time interval after the supply of the purge gas is stopped;
and when the target gas is determined to be in a release equilibrium state according to the plurality of first gas concentrations, stopping collecting the first gas concentrations of the target gas, and taking each currently collected first gas concentration as the first gas concentrations of the target gas at a plurality of moments.
In one embodiment, the apparatus further comprises:
a release rate determination module for obtaining a release rate of the target gas in the vehicle compartment according to the obtained concentrations of the respective first gases;
and the state discrimination module is used for determining that the target gas is in a release equilibrium state if the release rate is less than a preset release rate.
In one embodiment, the gas evaluation result obtaining module 603 includes:
the equilibrium state parameter acquisition module is used for determining the gas concentration and the release rate of the target gas in a release equilibrium state according to a plurality of first gas concentrations of the target gas;
the second gas concentration determining module is used for determining the second gas concentration of the target gas in the release equilibrium state for the future preset time according to the gas concentration and the release rate of the target gas in the release equilibrium state;
a curve generating module, configured to generate a concentration variation curve of the target gas according to the plurality of first gas concentrations and the second gas concentrations of the target gas;
and the detection result generation module is used for acquiring a gas evaluation result of the vehicle cabin according to the concentration change curve.
In one embodiment, the second gas concentration determination module is to:
determining an equilibrium state time point when the target gas enters a release equilibrium state and the future preset time of the concentration of the gas to be predicted;
acquiring a time difference value between the future preset time and the equilibrium state time point, and determining the concentration variation from the equilibrium state time point to the future preset time according to the time difference value and the release rate of the target gas;
and determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the concentration variation and the gas concentration of the target gas in the release equilibrium state.
In an embodiment, the detection result generating module is specifically configured to:
for each vehicle cabin, acquiring a gas release parameter of the target gas in the vehicle cabin based on a concentration change curve of the vehicle cabin, and determining a gas mass fraction of the vehicle cabin according to the gas release parameter;
and sequencing the gas mass fractions of the vehicles, and obtaining the gas evaluation results of the compartments of the vehicles according to the sequencing results and the concentration change curve.
In one embodiment, the apparatus further comprises:
the third gas concentration acquisition module is used for acquiring a third gas concentration of the target gas to be detected in the vehicle cabin after purified gas is input into the vehicle cabin;
a dilution rate determination module to determine a dilution rate of the target gas within the vehicle compartment as a function of the third gas concentration;
and the state identification module is used for determining that the gas concentration of the target gas is reduced to the background equilibrium concentration if the dilution rate is smaller than a preset dilution rate.
The various modules in the above described vehicle cabin gas evaluation device may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a vehicle cabin gas evaluation device is provided, and the computer device may be a terminal, the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for communicating with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of vehicle cabin gas assessment. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a vehicle cabin gas evaluation device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor realizing the following steps when executing the computer program:
triggering a purified gas supply module to input purified gas into a cabin of the vehicle to be detected;
when the gas concentration of a target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, stopping inputting a purified gas into the vehicle cabin, and obtaining first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped to be supplied;
and acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
In one embodiment, the steps in the other embodiments described above are also implemented when the computer program is executed by a processor.
In one embodiment, the vehicle cabin gas evaluation device may comprise at least one of the following detection instruments: a single photon ionization detector, a single photon ionization time-of-flight mass spectrum, a single photon ionization ion trap mass spectrum and a formaldehyde online analyzer.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
triggering a purified gas supply module to input purified gas into a cabin of the vehicle to be detected;
when the gas concentration of a target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, stopping inputting a purified gas into the vehicle cabin, and acquiring first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped to be supplied;
and acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
In one embodiment, the computer program when executed by the processor also implements the steps of the other embodiments described above.
In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of:
triggering a purified gas supply module to input purified gas into a cabin of the vehicle to be detected;
when the gas concentration of a target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, stopping inputting a purified gas into the vehicle cabin, and obtaining first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped to be supplied;
and acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
In one embodiment, the computer program when executed by the processor also performs the steps in the other embodiments described above.
It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (11)
1. A method of vehicle cabin gas assessment, the method comprising:
triggering a purified gas supply module to input purified gas into a cabin of the vehicle to be detected;
when the gas concentration of a target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, stopping inputting a purified gas into the vehicle cabin, and obtaining first gas concentrations of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped to be supplied;
and acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
2. The method of claim 1, wherein obtaining the first gas concentration of the target gas in the vehicle compartment at a plurality of times after the supply of the purge gas is stopped comprises:
obtaining a first gas concentration of the target gas in the vehicle cabin at a preset time interval after the supply of the purge gas is stopped;
and when the target gas is determined to be in a release equilibrium state according to the plurality of first gas concentrations, stopping collecting the first gas concentrations of the target gas, and taking each currently collected first gas concentration as the first gas concentrations of the target gas at a plurality of moments.
3. The method of claim 2, further comprising, after said obtaining a first gas concentration of the target gas in the vehicle compartment at a preset time interval after the supply of the purge gas is stopped:
obtaining the release rate of the target gas in the vehicle cabin according to the obtained concentration of each first gas;
and if the release rate is less than the preset release rate, determining that the target gas is in a release equilibrium state.
4. The method of claim 1, wherein obtaining a gas assessment of the vehicle compartment based on a plurality of first gas concentrations of the target gas within the vehicle compartment comprises:
determining a gas concentration and a release rate of the target gas in a release equilibrium state according to a plurality of first gas concentrations of the target gas;
determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the gas concentration and the release rate of the target gas in the release equilibrium state;
generating a concentration variation curve of the target gas according to the plurality of first gas concentrations and the second gas concentration of the target gas;
and acquiring a gas evaluation result of the vehicle cabin according to the concentration change curve.
5. The method of claim 4, wherein determining a second gas concentration of the target gas at the release equilibrium state for a preset time in the future according to the gas concentration and the release rate of the target gas at the release equilibrium state comprises:
determining an equilibrium state time point when the target gas enters a release equilibrium state and the future preset time of the concentration of the gas to be predicted;
acquiring a time difference value between the future preset time and the equilibrium state time point, and determining the concentration variation from the equilibrium state time point to the future preset time according to the time difference value and the release rate of the target gas;
and determining a second gas concentration of the target gas in the release equilibrium state for a preset time in the future according to the concentration variation and the gas concentration of the target gas in the release equilibrium state.
6. The method of claim 4, wherein said obtaining an assessment of the gas in the vehicle compartment from the concentration profile comprises:
for each vehicle cabin, acquiring a gas release parameter of the target gas in the vehicle cabin based on a concentration change curve of the vehicle cabin, and determining a gas mass fraction of the vehicle cabin according to the gas release parameter;
and sequencing the gas mass fractions of the vehicles, and obtaining the gas evaluation results of the compartments of the vehicles according to the sequencing results and the concentration change curve.
7. The method according to any one of claims 1-6, further comprising, after the triggering purge gas supply module inputs purge gas into a vehicle compartment to be inspected:
after purified gas is input into the vehicle cabin, acquiring a third gas concentration of target gas to be detected in the vehicle cabin;
determining a dilution rate of the target gas within the vehicle compartment from the third gas concentration;
and if the dilution rate is smaller than a preset dilution rate, determining that the gas concentration of the target gas is reduced to the background equilibrium concentration.
8. A vehicle cabin gas evaluation apparatus, characterized in that the apparatus comprises:
the gas delivery module is used for triggering the purified gas supply module to input purified gas into the cabin of the vehicle to be detected;
the first gas concentration acquisition module is used for stopping inputting purified gas into the vehicle cabin when the gas concentration of target gas to be detected in the vehicle cabin is reduced to a background equilibrium concentration, and acquiring the first gas concentration of the target gas in the vehicle cabin at a plurality of moments after the purified gas is stopped being supplied;
and the gas evaluation result acquisition module is used for acquiring a gas evaluation result of the vehicle cabin according to a plurality of first gas concentrations of the target gas in the vehicle cabin.
9. A vehicle cabin gas evaluation apparatus comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
11. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the method of any one of claims 1 to 7 when executed by a processor.
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| CN113516831A (en) * | 2021-07-05 | 2021-10-19 | 南京盛航海运股份有限公司 | Ship safety detection method, system, equipment and storage medium |
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| US6758739B1 (en) * | 2003-03-04 | 2004-07-06 | Delphi Technologies, Inc. | Air quality system for a vehicle |
| CN101718770A (en) * | 2009-11-24 | 2010-06-02 | 深圳市赛纳威环境仪器有限公司 | Automobile air quality monitoring and purifying system |
| CN107632085A (en) * | 2017-09-11 | 2018-01-26 | 通标标准技术服务(上海)有限公司 | Odoring substance distributes the device and its analysis method of trend under dynamic analog vehicle environment |
| CN113516831A (en) * | 2021-07-05 | 2021-10-19 | 南京盛航海运股份有限公司 | Ship safety detection method, system, equipment and storage medium |
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