Gas detection method and related apparatus

Abstract

A gas detection method and related device are applied to the technical field of gas detection. In the present application, the first characteristic information is the characteristic information of the first to-be-detected gas, and the at least one second characteristic information includes the characteristic information of at least one kind of substance. Since the characteristic information of different kinds of substances is different, and the kind of the at least one kind of substance is known, the first detection result of the first to-be-detected gas can include the information of the substance in the first to-be-detected gas based on the first characteristic information and the at least one second characteristic information. In addition, by detecting the first to-be-detected gas, the first detection result can also include at least one of the following: information related to the time length of obtaining the first detection result, environment information related to the first to-be-detected gas, and information related to the source of the substance in the first to-be-detected gas. In this way, the amount of information of the first detection result can be enriched, and the detection effect can be improved.

Description

Technical Field

[0001] This application relates to the field of gas detection technology, and in particular to a gas detection method and related apparatus. Background Technology

[0002] To determine the composition of a gas and assess its quality and potential safety risks, it is necessary to detect the types of substances within it. However, current technologies are not very effective at detecting substances in gases. Summary of the Invention

[0003] This application provides a gas detection method and related apparatus. The gas detection method provided by this application can enrich the information content of the gas detection results, thereby improving the gas detection effect.

[0004] In a first aspect, a gas detection method is provided, the method comprising: acquiring first characteristic information of a first gas to be detected; and obtaining a first detection result of the first gas to be detected based on the first characteristic information and at least one second characteristic information, wherein the at least one second characteristic information includes characteristic information of at least one substance, and the first detection result includes information about the substance in the first gas to be detected and at least one of the following: information related to the time of obtaining the first detection result, environmental information related to the first gas to be detected, and information related to the source of the substance in the first gas to be detected.

[0005] In this embodiment of the application, the gas detection method is executed by a gas detection device. Optionally, the gas detection device can be one of the following: a central processing unit (CPU), a computer, or a server.

[0006] The first gas to be detected can be any gas. In some embodiments, the first gas to be detected is collected from a confined space. For example, a confined space includes the space inside a vehicle when it is in a sealed state, or it also includes the space inside a cabin when it is in a sealed state. In other embodiments, the first gas to be detected is collected from a non-confined space. For example, the first gas to be detected can be an emitted gas, such as gas emitted from a chemical plant or a vehicle. The first gas to be detected can also be a gas exhaled by a living organism, such as gas exhaled by a human. The first gas to be detected can also be a gas in the environment to be detected; for example, if the environment to be detected is area A, then the first gas to be detected can be a gas from area A.

[0007] The first characteristic information includes characteristic information of the first gas to be detected, wherein the characteristic information of the first gas to be detected is related to the substances in the first gas to be detected. Therefore, the characteristic information of the first gas to be detected can be used to determine the substances in the first gas to be detected.

[0008] The first gas to be detected can be obtained in any way. In some embodiments, the first gas to be detected is collected using a gas collection container, for example, one of the following: a gas collection bag, a vacuum bottle, or a syringe. In other embodiments, the first gas to be detected is obtained by absorption using a gas absorption liquid. For example, passing the first gas to be detected through a container filled with a gas absorption liquid allows the first gas to dissolve in the gas absorption liquid, such as polyethylene glycol. In still other embodiments, the first gas to be detected is obtained by adsorption using a gas adsorbent, wherein the gas adsorbent includes an object capable of adsorbing gases. For example, the gas adsorbent is activated carbon, and passing the first gas to be detected through the activated carbon allows the first gas to adhere to the activated carbon.

[0009] At least one second feature information includes feature information of at least one substance, wherein the type of at least one substance is known, that is, the type of substance corresponding to at least one second feature information is known. For example, at least one second feature information includes second feature information f1 and second feature information f2, wherein second feature information f1 is feature information of toluene, and second feature information f2 is feature information of ethylbenzene.

[0010] Information related to the time taken to obtain the first detection result can be used to determine the duration of the first detection result. Environmental information related to the first gas to be detected can be used to determine the environmental information related to the first gas to be detected. Information related to the source of substances in the first gas to be detected can be used to determine the source of substances in the first gas to be detected, thereby achieving the effect of tracing the source.

[0011] In the first aspect, because the first feature information is related to a substance in the first gas to be detected, at least one second feature information is related to at least one substance. Based on the first feature information and at least one second feature information, the gas detection device can detect the substance in the first gas to be detected, thereby obtaining a first detection result for the first gas to be detected. The first detection result includes not only information about the substance in the first gas to be detected, but also at least one of the following: information related to the time elapsed since obtaining the first detection result, environmental information related to the first gas to be detected, and information related to the source of the substance in the first gas to be detected. This enriches the information content of the first detection result, thereby improving the detection effect.

[0012] In one optional implementation, the gas detection method further includes determining a confidence level of the first detection result based on information related to the time elapsed since the first detection result was obtained. This facilitates measuring the reliability of the first detection result based on its confidence level.

[0013] Optionally, the gas detection device determines the duration for obtaining the first detection result based on information related to the duration for obtaining the first detection result. The confidence level of the first detection result is obtained based on the absolute value of the difference between the duration for obtaining the first detection result and a first preset duration, wherein the absolute value is negatively correlated with the confidence level, and the first preset duration is the duration for obtaining the gas detection result assuming the gas detection device is functioning correctly.

[0014] In one optional implementation, the environmental information associated with the first gas to be detected includes at least one of the following: the temperature of the environment in which the first gas to be detected is located, and the humidity of the environment in which the first gas to be detected is located. Thus, the ambient temperature and / or the ambient humidity of the detected gas can be determined based on the first detection result.

[0015] In one alternative implementation, the first gas to be detected is collected from a first space. This enables the detection of gas within the first space using a gas detection method, and correspondingly, the first detection result can indicate the detection outcome of the gas within the first space.

[0016] In one optional implementation, the first detection result further includes at least one of the following: the collection flow rate of the first gas to be detected, and information related to the collection time of the first gas to be detected. This can enrich the information content of the first detection result.

[0017] In some schemes, after collecting gas from the first space, a gas detection device performs real-time detection on the collected gas. However, since there is an upper limit to the speed at which the gas detection device can detect gas, if the speed at which gas is collected from the first space is too fast, the speed at which gas is collected may exceed the speed at which gas is detected, leading to large errors in the detection results for some gases.

[0018] The gas collection rate is related to the gas flow rate; therefore, the collection flow rate of the first gas to be detected can be used to determine the confidence level of the first detection result. For example, if the gas detection device detects gas at a rate of 1 liter per minute, then if the collection flow rate of the first gas to be detected is greater than 1 liter per minute, the confidence level of the first detection result is low. Optionally, the gas detection device can detect gas at a rate ranging from 0.1 liters per minute to 1 liter per minute.

[0019] In one optional embodiment, the first space is a space within a detection chamber. The detection chamber includes a sealing assembly for sealing and is equipped with a temperature control device, a humidity control device, an air purification system, a gas collection device, and a gas detection device. The temperature control device is used to regulate the temperature of the detection chamber. The humidity control device is used to regulate the humidity of the detection chamber. The air purification system is used to purify the air in the detection chamber. The gas collection device is used to collect a first gas to be detected from a sampling point within the first space. The gas detection device is used to perform a gas detection method.

[0020] In this embodiment, the temperature control device, humidity control device, and air purification system ensure a clean and stable testing environment in the detection chamber. This reduces the influence of the gas in the first space on the gas inside the detection chamber, thereby improving the accuracy of the first detection result. Furthermore, the collection of the first gas to be detected from the first space, and the detection of the first gas to be detected based on a gas detection method to obtain the first detection result, can both be completed within the detection chamber. This improves the detection efficiency of the first gas to be detected.

[0021] Optionally, the sealing assembly includes at least one of the following: a door and a window. The detection chamber is sealed when the door and / or window is closed. Optionally, the sealing assembly further includes a sealing strip disposed on the door frame and / or a sealing strip disposed on the window frame.

[0022] In some designs, the gas collection device includes an inlet and an outlet, with the inlet facing the sampling point within the first space and the outlet connected to the sampling inlet of the gas detection device. This allows the gas collection device to transfer the gas collected from the first space to the gas detection device, thereby improving transmission efficiency and reducing the time required from gas collection to obtaining the detection result, thus improving detection efficiency.

[0023] In other designs, the first space is a sealed space, and the gas collection device can be placed inside the first space to collect gas. This reduces the probability that the gas collection device will collect gas outside the first space, thereby improving the accuracy of the gas detection results within the first space.

[0024] In one optional embodiment, the gas collection device includes a detection conduit, with a first end facing the sampling point and a second end for connecting to a gas detection device. This allows the gas collection device to transfer the collected gas to the gas detection device via the detection conduit, thereby reducing the waiting time for detection and improving the detection efficiency of the gas detection device.

[0025] In some designs, the gas collection device includes an inlet and an outlet, with the inlet located at the first end and the outlet at the second end.

[0026] Optionally, the detection conduit may be made of polytetrafluoroethylene (PTFE), which reduces the adsorption of volatile organic compounds (VOCs) by the detection conduit and reduces the VOCs emitted by the detection conduit, thereby reducing the interference of the detection conduit with VOCs in the detection gas.

[0027] Optionally, the detection conduits are all sealed, which prevents gas outside the detection conduits from entering the detection conduits, thereby reducing interference with the collected gas.

[0028] In one optional embodiment, the bottom wall of the detection chamber is provided with a track for the movement of the gas collection device and / or the gas detection device. This allows the gas collection device and / or the gas detection device to move flexibly within the detection chamber, thereby improving the efficiency of the gas collection device in collecting gas from the first space and / or improving the efficiency of the gas detection device in detecting the first gas to be detected.

[0029] In one alternative implementation, the first space includes the space inside the vehicle. This allows for the detection of gases within the vehicle using a gas detection method, and correspondingly, the first detection result can indicate the mass of the gases within the vehicle.

[0030] In one alternative embodiment, the detection chamber includes at least one parking space for parking a vehicle. This allows for the detection of gases inside the vehicle while it is parked in the parking space.

[0031] Optionally, if the number of parking spaces is greater than one, the number of vehicles that can be parked in the detection chamber is greater than one. After collecting gas from one vehicle, the gas collection device moves along a track to other vehicles to collect gas from them, thereby improving gas collection efficiency. Similarly, after detecting gas from one vehicle, the gas detection device can move along a track to other vehicles to detect gas from them, thereby improving gas detection efficiency.

[0032] In one alternative implementation, the sampling point location is determined based on at least one of the following: the location of the occupant's nose or the location of the occupant's mouth. This allows the initial detection results to better reflect the impact of in-vehicle air quality on the occupants.

[0033] In one alternative implementation, the first detection result further includes the vehicle's state at the time the first gas to be detected was collected from a sampling point inside the vehicle. This facilitates determining the mass of the gas inside the vehicle under different vehicle states based on the first detection result.

[0034] In one alternative implementation, the source of the substances in the first gas to be detected includes components within the vehicle. Thus, the first detection result can indicate which components within the vehicle the substances in the gas originate from, thereby facilitating the tracing of the substances in the gas and consequently aiding in the purification of the gas within the vehicle.

[0035] In an optional embodiment, the gas detection method further includes: acquiring a second detection result for a second gas to be detected, wherein the second gas to be detected is collected from a second space, and the second detection result includes information about the substances in the second gas to be detected. If the time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, a comparison result of the information about the substances in the first gas to be detected and the information about the substances in the second gas to be detected is obtained based on the first detection result and the second detection result.

[0036] The time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, indicating that the time of collecting the first gas to be detected from the first space and the time of collecting the second gas to be sampled from the second space are relatively close. Therefore, based on this implementation method, it is possible to compare the detection results of gases in different spaces at the same time.

[0037] The aforementioned second space can be a closed space; for example, the second space is the space inside the vehicle when the vehicle is in a closed state. The second space can also be a non-closed space; for example, the second space is the space inside the vehicle when the vehicle is in a non-closed state.

[0038] In some implementations, the second space is the space within the detection chamber. In this case, the environment of both the first and second spaces is the same as the environment within the detection chamber. This means that the difference between the environments of the first and second spaces at any given time is minimal. Therefore, the gas detection device, based on this implementation, can reduce the interference of environmental factors on the comparison results obtained from comparing information about the substances in the first and second gases.

[0039] In one optional embodiment, the gas detection method further includes displaying at least one of the following within the detection chamber: a first detection result, a second detection result, and a comparison result. This facilitates timely access for a user within the detection chamber to at least one of the following information: the first detection result, the second detection result, and the comparison result.

[0040] In one optional implementation, the first environment in which the first space is located satisfies at least one of the following conditions: the concentration of at least one substance in the first environment is less than or equal to a second threshold, the temperature of the first environment is within a first preset range, and the humidity of the first environment is within a second preset range.

[0041] Considering that substances in the gas in the first environment can affect substances in the gas in the first space—for example, if the first space is the space inside a vehicle, and the concentration of formaldehyde in the first environment is too high, it can easily lead to an increase in the concentration of formaldehyde inside the vehicle—or, for example, if the volatile substances emitted by the components inside the vehicle do not include ethylbenzene, but the first environment does include ethylbenzene, then it can easily lead to the presence of ethylbenzene in the gas inside the vehicle. Therefore, when the concentration of at least one substance in the first environment is less than or equal to a second threshold, the interference of the first detection result of the first gas to be detected by the first environment can be reduced, thereby improving the accuracy of the first detection result.

[0042] Considering that ambient temperature affects the substances in a gas, the comparison results are significantly influenced by ambient temperature when comparing detection results of gases at different ambient temperatures. Therefore, when the temperature of the first environment is within a first preset range, the ambient temperature corresponding to the first detection result can be clearly identified, and the first detection result can be compared with the detection results of gases with ambient temperatures within the first preset range, thus reducing the influence of ambient temperature on the comparison results.

[0043] Considering that ambient humidity affects the substances in a gas, the comparison results are significantly influenced by ambient humidity when comparing gas detection results under different ambient humidity levels. Therefore, when the humidity of the first environment is within a second preset range, the ambient humidity corresponding to the first detection result can be clearly identified, and the first detection result can be compared with the detection results of gases with ambient humidity within the second preset range, thus reducing the impact of ambient humidity on the comparison results.

[0044] In one alternative implementation, information about the substances in the first gas to be detected indicates the type and / or concentration of the substances in the first gas to be detected. Thus, the type and / or concentration of the substances in the first gas to be detected can be determined by detecting the first gas to be detected.

[0045] In one optional embodiment, the first feature information includes a mass spectrum of a substance in the first gas to be detected, and at least one second feature information includes a mass spectrum of at least one substance. Thus, the gas detection device can obtain a first detection result for the first gas to be detected based on the mass spectrum of the substance in the first gas to be detected and the mass spectrum of at least one substance, thereby improving the accuracy of the first detection result.

[0046] In one alternative embodiment, at least one substance includes volatile organic compounds (VOCs). The information related to the substance in the first gas to be detected includes at least one of the following: whether the substance in the first gas to be detected includes VOCs, the type of VOC in the first gas to be detected, and the concentration of VOCs in the first gas to be detected. This enables the detection of VOCs in the first gas to be detected.

[0047] Secondly, this application provides a gas detection device, which includes a unit that performs the first aspect or any one of the embodiments described above.

[0048] Thirdly, this application provides another gas detection device, which includes a processor and a memory, wherein the memory provides storage space for storing computer instructions. The processor invokes the computer instructions stored in the memory to execute the first aspect and any of its embodiments.

[0049] Fourthly, a chip is provided, including logic circuitry and an interface, the logic circuitry and the interface being coupled, wherein the interface is used for inputting and / or outputting information, and the logic circuitry is used for performing actions as described in the first aspect and any of its embodiments.

[0050] Fifthly, a terminal is provided, including a gas detection device as in the second aspect, or a gas detection device as in the third aspect, or a chip as in the fourth aspect.

[0051] In a sixth aspect, a computer-readable storage medium is provided for storing a computer program, wherein when the computer program is executed, the first aspect or any of the embodiments described above is executed.

[0052] In a seventh aspect, a computer program product is provided, which includes computer language code or computer instructions. When the computer program product is executed by a processor, the first aspect or any of the embodiments described above is performed.

[0053] The technical effects of aspects two through seven of this application can be found in the technical effects of the technical solution of aspect one. Attached Figure Description

[0054] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] The accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0056] Figure 1 This is a schematic diagram of the structure of a detection chamber; Figure 2 This is a schematic diagram of a laboratory. Figure 3 This is a schematic diagram of the structure of a gas detection system provided in an embodiment of this application; Figure 4 A schematic flowchart of a gas detection method provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a detection chamber provided in an embodiment of this application; Figure 6 A schematic diagram of the layout of a detection chamber provided for an embodiment of this application; Figure 7 A flowchart illustrating another gas detection method is provided for embodiments of this application; Figure 8 A schematic diagram illustrating a process for constructing a volatile organic compound mass spectrum library, provided for embodiments of this application; Figure 9 A schematic flowchart illustrating another gas detection method provided in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a gas detection device provided in an embodiment of this application; Figure 11 This is a schematic diagram of another gas detection device provided in an embodiment of this application. Detailed Implementation

[0057] In recent years, public attention to gas quality has been increasing. The quality of gas is essentially determined by the composition and concentration of various substances within it. Accurate identification of these substances is a core means of assessing gas quality and controlling environmental pollution. Therefore, the detection of substances in gases is of paramount importance. Taking the gas quality inside a vehicle as an example, VOCs (volatile organic compounds) not only harm human health but also reduce the driving experience. These include benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde, and acrolein. Therefore, detecting VOCs in vehicle interiors is particularly crucial.

[0058] Currently, some gas detection solutions are based on detection chambers and gas chromatography-mass spectrometry (GC-MS) equipment. Figure 1 This is a schematic diagram of the structure of a detection chamber, such as... Figure 1As shown, the detection chamber is equipped with an irradiation lamp, an external circulation system, and a humidity control device. The detection chamber can be sealed. The irradiation lamp is used to regulate the temperature inside the detection chamber through radiant heat, the external circulation system is used to exchange the gas inside the detection chamber with the gas outside the detection chamber, and the humidity control device is used to regulate the humidity inside the detection chamber.

[0059] The object to be tested is placed in the testing chamber, and the environment within the chamber is adjusted based on the irradiation lamp, external circulation system, and humidity controller to meet the requirements for gas detection. Then, a miniature sampling pump adsorbs the gas from the object into a standard sampling tube; for example, the object is a vehicle. After the vehicle has been left stationary in the testing chamber for 16 hours, the gas inside the vehicle is sampled using the miniature sampling pump. Subsequently, the sampling tube is taken back to a laboratory equipped with GC-MS equipment for analysis to obtain the detection results of the gas within the object. For example, Figure 2 This is a schematic diagram of a laboratory, such as... Figure 2 As shown, the laboratory is equipped with GC-MS equipment.

[0060] Other approaches place a cubic chamber inside the object to be tested, and then control the heating and humidification conditions within the chamber to ensure that the temperature and humidity remain constant during the test. Simultaneously, the cubic chamber is connected to a flame ionization detector (FID) sampling device, which uses hydrogen flame combustion to generate a detection current to quantitatively analyze the total volatile organic compounds (TVOC) released from key components.

[0061] However, current methods for detecting substances in gases often yield insufficient information in the detection results, leading to poor detection performance. Therefore, this application provides a gas detection method and related apparatus to improve gas detection efficiency by enriching the information content of the detection results.

[0062] Please see Figure 3 , Figure 3 This is a schematic diagram of a gas detection system provided in an embodiment of this application. Figure 3 As shown, the gas detection system includes a target object, a gas collection device, and a gas detection device. The gas collection device collects the gas to be detected from the target object, and the gas detection device detects the gas to be detected based on the gas detection method provided in this application embodiment to obtain a detection result. For example, the target object is a vehicle. After the gas collection device collects the gas to be detected from inside the vehicle, the gas detection device can detect the gas to be detected to obtain a detection result of the gas inside the vehicle.

[0063] The gas detection method of this application, according to embodiments of the present application, will be described in detail below with reference to the accompanying drawings. Please refer to... Figure 4 , Figure 4 This is a schematic flowchart of a gas detection method provided in an embodiment of this application.

[0064] 401. The gas detection device acquires the first characteristic information of the first gas to be detected.

[0065] In this embodiment, the first gas to be detected can be any gas. The first feature information includes feature information of the first gas to be detected. In some embodiments, the first feature information includes mass spectra of substances in the first gas to be detected. The number of mass spectra of substances in the first gas to be detected is greater than or equal to 1. Optionally, exemplaryly, when the number of substances in the first gas to be detected is 1, the number of mass spectra of substances in the first gas to be detected is 1. When the number of substances in the first gas to be detected is greater than 1, the number of mass spectra of substances in the first gas to be detected can be 1 or greater than 1. For example, the first gas to be detected includes substances w1 and w2, wherein the mass spectrum of substance w1 is t1 and the mass spectrum of substance w2 is t2. Then the mass spectra of substances in the first gas to be detected can be t1 and t2, or it can be the result of a combination of t1 and t2.

[0066] Optionally, the mass spectrum of the substance in the first gas to be detected is obtained based on the first ion, wherein the first ion is obtained by ionizing the first gas to be detected.

[0067] In other schemes, the first characteristic information includes the spectral characteristics of the first gas to be detected, such as Raman shift peaks. In still other schemes, the first characteristic information includes the mobility of the first ion, wherein the mobility of the first ion is the velocity of the first ion in the electric field.

[0068] 402. The gas detection device obtains a first detection result of the first gas to be detected based on the first feature information and at least one second feature information.

[0069] In this embodiment, at least one second feature information includes feature information of at least one substance. Because different types of feature information are different, information about the substance in the gas to be detected can be determined based on the first feature information and at least one second feature information. Optionally, the information about the substance in the gas to be detected indicates the type of substance in the first gas to be detected and / or the concentration of the substance in the first gas to be detected.

[0070] In some schemes, the gas detection device determines the similarity between each feature in at least one second feature and the first feature, obtaining at least one first similarity. From the at least one first similarity, a high similarity is determined, wherein a high similarity is a first similarity greater than a third threshold. The first gas to be detected is determined to include at least one substance corresponding to the high similarity. Thus, the types of substances in the first gas to be detected can be determined.

[0071] For example, at least one second feature information includes second feature information f1 and second feature information f2, wherein second feature information f1 is the feature information of substance w1, and second feature information f2 is the feature information of substance w2. If the similarity between second feature information f1 and first feature information is high, and the similarity between second feature information f2 and first feature information is not high, then the substance corresponding to the high similarity among at least one substance is w1. Accordingly, it can be determined that the first gas to be detected includes substance w1.

[0072] In one optional embodiment, the first feature information includes a mass spectrum of a substance in the first gas to be detected, and at least one second feature information includes a mass spectrum of at least one substance. The gas detection device determines the similarity between the mass spectrum of the substance in the first gas to be detected and the mass spectrum of at least one substance, thereby obtaining at least one first similarity. Optionally, the gas detection device obtains at least one first similarity based on the similarity between the mass-to-charge ratio of the mass spectrum of the substance in the first gas to be detected and the mass-to-charge ratio of the mass spectrum of at least one substance, wherein the mass-to-charge ratio of the mass spectrum is the ratio of the mass of the ion corresponding to the mass spectrum to the charge of the ion corresponding to the mass spectrum. For example, m represents the mass of the ion corresponding to the mass spectrum, and z represents the charge of the ion corresponding to the mass spectrum, then the mass-to-charge ratio is m / z.

[0073] The gas detection device can also determine the concentration of a substance in the first gas to be detected based on the first characteristic information. Optionally, the first characteristic information includes a mass spectrum of the substance in the first gas to be detected. Based on the mass spectrum, the gas detection device can determine the number of first ions, and then determine the concentration of the substance in the first gas to be detected based on the number, wherein the number is positively correlated with the concentration of the substance in the first gas to be detected. For example, the gas detection device determines the area of ​​the peak in the mass spectrum based on the peak area integration method. The concentration of the substance in the first gas to be detected is obtained based on the peak area.

[0074] In one optional implementation, at least one second feature information includes mass spectra of at least one substance at different concentrations. For example, the at least one substance includes substance w1, and the at least one second feature information includes mass spectrum t1 of substance w1 when its concentration is d1, and mass spectrum t2 of substance w1 when its concentration is d2. The gas detection device determines a first concentration of the substance in a first gas to be detected based on the first feature information. A second concentration of the substance in the first gas to be detected is obtained based on high similarity, wherein the second concentration is the concentration corresponding to a high-similarity mass spectrum, and the high-similarity mass spectrum is the mass spectrum corresponding to high similarity in at least one second feature information. A third concentration of the substance in the first gas to be detected is obtained based on the first and second concentrations; optionally, the third concentration is the average of the first and second concentrations.

[0075] In this process, the mass spectra of at least one substance at different concentrations in at least one of the second characteristic information are obtained through calibration. Based on the mass spectra of at least one substance at different concentrations and at least one first characteristic information, the concentration of the substance in the first gas to be detected is obtained. This reduces both the calibration error and the error in the first characteristic information that could lead to errors in the concentration of the substance in the first gas to be detected. Therefore, the accuracy of the concentration of the substance in the first gas to be detected can be improved.

[0076] In this embodiment of the application, the first detection result includes not only information about the substances in the first gas to be detected, but also at least one of the following: information related to the duration of obtaining the first detection result, environmental information related to the first gas to be detected, and information related to the source of the substances in the first gas to be detected.

[0077] Information related to the time taken to obtain the first detection result can be used to determine the duration of obtaining the first detection result. Since the probability of a gas detection device malfunctioning is higher when the time taken to obtain the first detection result is too long or too short, the confidence level of the first detection result obtained by the gas detection device is low in such cases. Therefore, the gas detection device can determine the confidence level of the first detection result based on information related to the time taken to obtain the first detection result.

[0078] Information related to the duration of obtaining the first detection result includes at least one of the following: a first start time and the time at which the first detection result is obtained, wherein the first start time is the time at which the first detection result is obtained based on the first feature information and at least one second feature information. For example, if the gas detection device starts processing the first feature information and at least one second feature information at time k1 to determine the first detection result, and obtains the first detection result at time k2, then the first start time is time k1, and the time at which the first detection result is obtained is time k2.

[0079] The environmental information related to the first gas to be detected includes at least one of the following: the temperature of the environment in which the first gas to be detected is located, and the humidity of the environment in which the first gas to be detected is located.

[0080] Information related to the source of substances in the first gas to be detected can be used to trace the source of those substances. In some schemes, the substances in the first gas to be detected include volatile organic compounds (VOCs). Since VOCs are harmful to human health, the amount of VOCs volatilized from that source can be reduced by addressing the source of the VOCs in the first gas to be detected.

[0081] For example, the first gas to be detected is collected from inside a vehicle. When the substances in the first gas to be detected include volatile organic compounds (VOCs), the source of the VOCs can be determined based on the origin of the substances in the first gas to be detected. Then, the concentration of VOCs in the gas inside the vehicle can be reduced by treating the corresponding components. For example, the VOCs in the vehicle can be reduced by replacing the materials of the components.

[0082] Optionally, if the first gas to be detected is collected from the first space, the first detection result may also include at least one of the following: the collection flow rate of the first gas to be detected, and information related to the collection time of the first gas to be detected.

[0083] Optionally, if the first gas to be detected is collected from within a first space, the information related to the source of the substance in the first gas to be detected includes the probability that an object within the first space is the source of the substance in the first gas to be detected. For example, the first space includes the space inside a vehicle, and the objects within the first space include components inside the vehicle, such as seats, steering wheels, armrests, and floor mats. If the substance in the first gas to be detected includes substance w1, then the information related to the source of the substance in the first gas to be detected may include the probability that substance w1 originates from a seat and the probability that substance w1 originates from a steering wheel.

[0084] By outputting information related to the source of substances in the first gas to be detected, users can investigate the source of substances in the first gas to be detected based on the probability that objects in the first space are the source of substances in the first gas to be detected.

[0085] Optionally, the first detection result also includes a processing strategy, wherein the processing strategy is used to reduce the concentration of substances in the first gas to be detected. For example, the first gas to be detected is collected from inside a vehicle, and the substances in the first gas to be detected include formaldehyde. The processing strategy could be to suggest replacing the seat material with a material with lower formaldehyde content, or it could be to replace the adhesives in the vehicle with adhesives with lower formaldehyde content.

[0086] exist Figure 4 In the gas detection method, the first feature information is the feature information of a first gas to be detected, and at least one second feature information includes the feature information of at least one substance. The gas detection device obtains a first detection result for the first gas to be detected based on the first feature information and at least one second feature information. The first detection result includes not only information about the substances in the first gas to be detected, but also at least one of the following: information related to the time elapsed since obtaining the first detection result, environmental information related to the first gas to be detected, and information related to the source of the substances in the first gas to be detected. This enriches the information content of the first detection result, thereby improving the detection effect.

[0087] In one optional embodiment, the first space is a space within a detection chamber, wherein the detection chamber includes a sealing assembly for sealing. Exemplarily, the detection chamber is a chamber for detecting the quality of gases inside a vehicle, and the first space is a space inside the vehicle. The detection chamber is equipped with a temperature control device, a humidity control device, an air purification system, a gas collection device, and a gas detection device. The temperature control device is used to regulate the temperature of the detection chamber. The humidity control device is used to regulate the humidity of the detection chamber. The air purification system is used to purify the air in the detection chamber. The gas collection device is used to collect a first gas to be detected from a sampling point within the first space. The gas detection device is used to perform a gas detection method.

[0088] In this embodiment, the collection of the first gas to be detected from the first space, and the detection of the first gas to be detected based on the gas detection method to obtain the first detection result, can both be completed within the detection chamber. This improves the detection efficiency of the first gas to be detected.

[0089] To better understand the detection chamber, the following will combine... Figure 5 Describe the detection chamber. Figure 5 This is a schematic diagram of a detection chamber provided in an embodiment of this application. It should be understood that... Figure 5 For ease of description only, Figure 5 The structural form, size, or quantity of the device shown does not constitute a limitation on the scheme of this application. Figure 5 The positions of the devices shown do not constitute a limitation on the present application.

[0090] exist Figure 5 In the detection chamber 11, there is a top wall 12, a bottom wall 13, and multiple side walls 14. It should be understood that... Figure 5The structural form of the detection chamber 11 shown is merely an example. In some other possible embodiments, the detection chamber 11 may have other forms, such as the top wall 12 of the detection chamber 11 being an upwardly convex structure. The side walls 14 of the detection chamber are used to connect the top wall 12 and the bottom wall 13. In some other possible embodiments, the side walls 14 include an outwardly convex structure. In summary, the embodiments of this application do not limit the structural forms of the top wall 12, the bottom wall 13, and the plurality of side walls 14.

[0091] A temperature control device 15 is provided on the top wall 12, wherein the temperature control device 15 is used to regulate the temperature of the detection chamber 11. Optionally, the temperature control device 15 is located at the center of the top wall 12, so that the heat emitted by the temperature control device 15 can diffuse outwards along the center of the detection chamber 11, thereby ensuring a uniform temperature within the detection chamber 11. For example, the temperature control device 15 is an industrial air conditioner. The temperature control device 15 stabilizes the temperature within the detection chamber 11 within a certain range, that is, it keeps the detection chamber 11 in a constant temperature state. For example, the temperature control device 15 stabilizes the temperature within the detection chamber 11 at 23.5 degrees Celsius to 24.5 degrees Celsius.

[0092] The bottom wall 13 is equipped with a humidity control device 16 and an air purification system 17. The humidity control device 16 is used to regulate the humidity of the detection chamber 11. The air purification system 17 is used to purify the air in the detection chamber 11.

[0093] Optionally, the humidity control device 16 may be located in any corner of the detection chamber 11. Alternatively, when two humidity control devices 16 are provided in the detection chamber 11, the two humidity control devices 16 may be diagonally distributed.

[0094] Optionally, the distance between the air purification system 17 and the side wall 14 is less than a fourth threshold. This can be understood as the air purification system 17 being positioned near the side wall 14 of the detection chamber 11; for example, the fourth threshold is 30 centimeters. Optionally, the distance between the air purification system 17 and the humidity control device 16 is greater than a fifth threshold, thereby reducing mutual interference between the humidity control device 16 and the air purification system 17. For example, the fifth threshold is 1 meter.

[0095] The object to be tested 18, the gas collection device 19, and the gas detection device 20 are placed on the bottom wall 13. For example, the object to be tested 18 is a vehicle. After the gas collection device 19 collects the first gas to be tested from the object to be tested 18, the gas detection device 20 detects the first gas to be tested.

[0096] Because excessively high temperatures can easily cause the gas detection device 20 to malfunction, Figure 5The temperature control device 15 in the detection chamber 11 shown can maintain a constant temperature within the detection chamber 11, therefore the gas detection device 20 can be installed in... Figure 5 The gas can be collected in the detection chamber 11 shown, and then the gas can be detected in real time after being collected by the gas collection device 19, thereby improving the detection efficiency.

[0097] In contrast, due to Figure 1 The irradiation lamp in the detection chamber cannot maintain a constant temperature within the chamber, preventing the gas detection device from being installed. Figure 1 This is because the gas cannot be detected in real time within the detection chamber. Therefore, when... Figure 1 After the gas to be detected is collected in the detection chamber shown, it needs to be transported to a laboratory for detection by a gas detection device. This results in low detection efficiency. For example, when the object to be detected is a vehicle, based on... Figure 1 The testing chamber shown typically requires 3 to 7 days to complete the test, while based on Figure 5 The test chamber shown can be used for testing, which can be completed in 5 to 10 minutes.

[0098] Furthermore, because the cost of an irradiation lamp is higher than that of a temperature control device (such as an industrial air conditioner), Figure 1 The construction cost of the detection chamber shown is higher than Figure 5 The construction cost of the detection chamber shown is high.

[0099] Furthermore, the volume of the cubic chamber in the current solution is limited, thus limiting the area that the cubic chamber-based detection method can inspect. Therefore, when the internal volume of the object to be inspected (18) is large, the cubic chamber-based detection method cannot perform a comprehensive inspection of the interior of the object. Figure 5 The detection chamber 11 shown has a large volume, capable of accommodating the entire object 18 to be tested. Therefore, a comprehensive inspection of the interior of the object 18 can be performed, thereby improving the accuracy of the inspection. For example, the object 18 is a vehicle. The cubic chamber-based detection scheme can detect gases in the cockpit, but it cannot detect gases in areas outside the cockpit of the vehicle. However, when the vehicle is placed in… Figure 5 When the gas inside the vehicle is collected in the detection chamber 11 shown, a comprehensive detection of the gas inside the vehicle can be achieved.

[0100] In some embodiments, the top wall 12 is also provided with an air intake and exhaust device 21. In this way, the air intake and exhaust device 21 can use the principle of hot air rising to quickly exhaust the volatile gases in the detection chamber 11, and the air intake and exhaust device 21 can exchange gases with the outside.

[0101] In some embodiments, multiple sidewalls 14 are provided with multiple air outlets 22. The air outlets 22 are used to discharge the purified gas outside the detection chamber 11, thereby ensuring air circulation in the detection chamber 11.

[0102] Optionally, the distance between the bottom end of the air outlet 22 and the bottom wall 13 of the detection chamber 11 is less than or equal to the height of the object to be tested 18. This allows gases evaporating from the outside of the object to be tested 18 to be discharged from the detection chamber 11 through the air outlet 22, thereby reducing the impact of these gases on the gas inside the object to be tested 18. For example, if the object to be tested 18 is a vehicle, gases evaporating from the outside of the vehicle can be discharged through the air outlet 22, thus reducing the impact of gases evaporating from the vehicle's tires on the gas inside the vehicle.

[0103] In some embodiments, the sealing assembly of the detection chamber 11 includes a first door 23 and a second door 24. When both the first door 23 and the second door 24 are closed, the detection chamber 11 is in a sealed state.

[0104] Optionally, the first gate 23 is also used for the passage of the object to be inspected 18, and the second gate 24 is also used for the passage of personnel. For example Figure 5 As shown, the first door 23 and the second door 24 are disposed on the side wall 14 of the detection chamber 11. Taking the object to be detected 18 as a vehicle as an example, the first door 23 is used for the vehicle to enter the detection chamber 11 from the outside. The second door 24 is used for personnel passage.

[0105] Optionally, the first door 23 and the second door 24 can be located in the same side wall 14, or as follows: Figure 5 The shown can be set on two opposite sidewalls 14, or it can be set on two adjacent sidewalls 14.

[0106] In some embodiments, the detection chamber 11 further includes a track 25 disposed on the bottom wall 13 of the detection chamber 11. The gas collection device 19 and / or the gas detection device 20 can move via the track 25.

[0107] Optionally, the structure of the track 25 is related to the gas collection device 19 and / or the gas detection device 20. For example, if the gas collection device 19 has a pulley at the bottom, the track 25 is a groove so that the pulley of the gas collection device 19 can move along the groove of the track 25.

[0108] Optionally, the number of grooves in the track 25 is related to the number and distribution of pulleys in the gas collection device 19. For example, if the gas collection device 19 has four pulleys arranged in a rectangular pattern, the track 25 includes at least two parallel grooves. This allows the grooves to limit the movement of the pulleys, ensuring that the gas collection device 19 moves smoothly along the track 25, thereby improving the efficiency of the gas collection device 19 and thus increasing the gas collection efficiency of the gas collection device 19 within the object to be detected 18.

[0109] Optionally, the width of the groove in the track 25 is greater than the width of the gear in the gas collecting device 19. For example, the width of the groove in the track 25 is 2 mm greater than the width of the gear. In another implementation, the height of the groove in the track 25 is greater than the radius of the gear in the gas collecting device 19. For example, the depth of the groove in the track 25 is 1 mm greater than the radius of the gear. In this way, the aforementioned embodiments can ensure that the gear can slide freely in the groove without jamming, thereby improving the operating efficiency of the gas collecting device 19.

[0110] In some embodiments, the detection chamber 11 further includes a slider 26, which is slidably connected to the track 25. The slider 26 can be connected to the gas collection device 19, and the slider 26 is used to drive the gas collection device 19 to move. Several examples of the connection between the slider 26 and the gas collection device 19 are described below.

[0111] Example 1: The top of the slider 26 is provided with an elastic buckle, and the bottom of the gas collection device 19 is provided with a slot that matches the buckle. The slider 26 and the gas collection device 19 can be detachably connected through the buckle and the slot.

[0112] Example 2: The top of the slider 26 is provided with a first magnetic attraction element, and the bottom of the gas collection device 19 is provided with a second magnetic attraction element. The magnetic poles of the first magnetic attraction element and the second magnetic attraction element are opposite. In this way, the slider 26 and the gas collection device 19 are connected through the first magnetic attraction element and the second magnetic attraction element.

[0113] Example 3: An electromagnet is embedded on the upper surface of the slider 26, and a magnetic conductor (such as an iron sheet or block) is embedded at the corresponding position on the bottom of the gas collecting device 19. When the electromagnet is energized, it generates a magnetic force, and the gas collecting device 19 can be attracted to the slider 26. When the electromagnet is de-energized, the magnetic force disappears, and the gas collecting device 19 can be separated from the slider 26.

[0114] In some embodiments, the detection chamber 11 further includes a display device 27 disposed on the side wall 14 of the detection chamber 11. The display device 27 is used to display information, for example, to display gas detection results.

[0115] Figure 5 The structure of the detection chamber 11 has been described, and the following will be combined with... Figure 6 right Figure 5 The layout of the detection chamber 11 shown will be described below. For example... Figure 6 As shown, the detection chamber 11 includes a detection area and a retention area arranged along a first direction. The detection area is used to place the test object 18 waiting to be collected, the test object 18 currently being collected, or the test object 18 waiting for the test result.

[0116] Optionally, the number of detection positions is greater than 10, which increases the number of objects 18 that the detection chamber 11 can accommodate simultaneously, thereby improving detection efficiency. For example, the object 18 to be detected is a vehicle, and the detection position is a parking space. Since the area of ​​a parking space is generally 15 to 20 square meters, and the detection chamber 11 also has areas other than the detection area, the area of ​​the detection chamber 11 needs to be greater than 200 square meters.

[0117] The holding area is used to place the test objects 18 that fail the test. The testing area includes at least one testing position, such as testing position 1 to testing position 10, which is the location where the test object 18 is placed. Each testing position is 6 meters (m) × 3 meters in size, and adjacent testing positions are spaced 1 meter apart. The holding area includes at least one holding position, such as... Figure 6 The positions shown are 1 to 3, where the test object 18 that fails the gas detection is placed.

[0118] Optionally, the number of retention positions is greater than or equal to 3, so that the retention area can accommodate more objects that fail the test, thereby reducing the occupation of the test area by objects that fail the test and thus improving the test efficiency.

[0119] Optionally, the object to be inspected, 18, is a vehicle, and both the inspection position and the retention position are parking spaces.

[0120] The detection area is positioned opposite the first door 23 in the detection chamber 11, which facilitates the passage of the object to be tested 18. The retention area is positioned opposite the second door 24 in the detection chamber 11, so that when the gas detection result of the object to be tested 18 is unqualified, the staff can enter the retention area through the second door 24 to investigate the object to be tested 18 in the retention area.

[0121] The gas collection device 19 can sample the object 18 to be tested in the detection area along a first direction. Optionally, when the gas collection device 19 moves along the first direction between position 1 and position 2, it can first sample the gas of the object 18 to be tested at detection position 1, and then detect the gas of the object 18 to be tested at detection position 2. After sampling the gas of the object 18 to be tested at detection positions 1 and 2, this embodiment supports the gas collection device 19 to move to position 2, and then sequentially complete the sampling of the gas of the object 18 to be tested at detection positions 3 and 4. After that, the gas collection device 19 moves to position 3, and the subsequent steps are repeated. As can be seen from the foregoing, this embodiment can reduce the number of times the gas collection device 19 moves, thereby reducing the number of operation steps, improving the efficiency of gas collection, thereby improving the detection efficiency, and reducing the residence time of the object 18 to be tested in the detection chamber 11.

[0122] Optionally, when the object to be inspected is a vehicle, and the layout of the inspection chamber 11 is as follows: Figure 6 As shown, this improves the efficiency of the gas collection device 19 in collecting gases from inside the vehicle. Furthermore, because the gas detection device 20 is also located within the detection chamber 11, it can perform real-time detection of the collected gases, thereby improving detection efficiency. For example, the detection time for a vehicle can be reduced to 5 to 10 minutes.

[0123] In some schemes, the object to be tested, 18, is a vehicle, and the first space includes the space inside the vehicle. In this case, the sampling point is located inside the vehicle. Based on this scheme, gases inside the vehicle can be detected.

[0124] Optionally, the sampling point location is determined based on at least one of the following: the position of the occupant's nose or the position of the occupant's mouth. This allows the initial detection results to better reflect the impact of in-vehicle air quality on the occupants.

[0125] In some schemes, the sampling point locations include lateral, longitudinal, and vertical positions. The lateral and longitudinal positions are parallel and perpendicular to the ground, while the vertical position is perpendicular to the ground. The lateral and longitudinal positions are determined based on the positions of the seats within the vehicle, and the vertical position is determined based on at least one of the following: the position of an occupant's nose or the position of an occupant's mouth. For example, the first row of seats in the vehicle includes two seats. The sampling point locations and the positions of the two seats in the first row satisfy the condition that the distance from the sampling point to the two seats in the first row is the same; the lateral and longitudinal positions can be determined based on this condition. The vertical position can be the position of an occupant's nose.

[0126] Optionally, the number of sampling points is greater than 1. For example, the number of sampling points is 2. The vehicle has two rows of seats, one of which is located at the same distance from the two seats in the first row, and the other is located at the center of the second row of seats.

[0127] Optionally, the first detection result also includes the vehicle's state when the first gas to be detected was collected from sampling points inside the vehicle. This facilitates determining the mass of the gas inside the vehicle under different vehicle states based on the first detection result.

[0128] Optionally, the vehicle's status includes at least one of the following: the vehicle's air recirculation mode, the vehicle's running status, the vehicle's speed, and the vehicle's air conditioning status. Air recirculation modes include internal recirculation mode and external recirculation mode, where internal recirculation mode refers to the exchange of air between the inside and outside of the vehicle, and external recirculation mode refers to the absence of exchange of air between the inside and outside of the vehicle. The vehicle's running status includes: the vehicle is not started, the vehicle is idling, and the vehicle is in motion. The vehicle's air conditioning status includes: the air conditioning is not turned on, and the temperature when the air conditioning is on.

[0129] In one optional embodiment, the gas detection device further acquires a second detection result of the second gas to be detected, wherein the second gas to be detected is collected from the second space, and the second detection result includes information about the substances in the second gas to be detected.

[0130] Optionally, both the first space and the second space are spaces within the vehicle. For example, the spaces within the vehicle include the space inside the passenger compartment and the space inside the trunk. The first space can be the space inside the passenger compartment, and the second space can be the space inside the trunk. As another example, the first space is the space inside vehicle v1, and the second space is the space inside vehicle v2.

[0131] When the time interval between the sampling time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, the gas detection device obtains information about the substances in the first gas to be detected and a comparison result of information about the substances in the second gas to be detected based on the first detection result and the second detection result.

[0132] Because the time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, it indicates that the time of collecting the first gas to be detected from the first space and the time of collecting the second gas to be detected from the second space are relatively close. For example, the first threshold is 5 seconds. Therefore, when the time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to the first threshold, the gas detection device can obtain the information of the substances in the first gas to be detected and the comparison result of the information of the substances in the second gas to be detected based on the first detection result and the second detection result, which can reduce the interference of time factors on the comparison result.

[0133] For example, the first space is the space inside vehicle v1, and the second space is the space inside vehicle v2. The comparison result of the information of the substances in the first gas to be detected and the information of the substances in the second gas to be detected is the comparison result of the substances in the gas inside vehicle v1 and the substances in the gas inside vehicle v2. Based on this comparison result, the difference in the mass of the gas inside vehicle v1 and the mass of the gas inside vehicle v2 can be evaluated.

[0134] Optionally, both the first space and the second space are spaces within the detection chamber. In this case, if the time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, the gas detection device obtains information about the substances in the first gas to be detected and compares this information with that of the second gas to be detected, based on the first and second detection results. This reduces the interference of environmental factors on the comparison results, thereby improving the accuracy of the comparison results.

[0135] Optionally, the first detection result includes information related to the collection time of the first gas to be detected, and the second detection result includes information related to the collection time of the second gas to be detected. Based on the information related to the collection time of the first gas to be detected, the collection time of the first gas to be detected can be obtained. Based on the information related to the collection time of the second gas to be detected, the collection time of the second gas to be detected can be obtained.

[0136] In one alternative embodiment, the gas detection device further displays at least one of the following within the detection chamber: a first detection result, a second detection result, and the aforementioned comparison result. This allows the user to obtain the detection result of the first gas to be detected through the first detection result, the detection result of the second gas to be detected through the second detection result, and the comparison result of the substances in the first gas to be detected and the substances in the second gas to be detected through the comparison result.

[0137] In some embodiments, the detection chamber includes a display device, to which the gas detection device sends a display instruction, wherein the display instruction is used to instruct the display device to display at least one of the following: a first detection result, a second detection result, or the aforementioned comparative result.

[0138] Optionally, the display device includes at least one of the following: a display screen and a projection device. The display screen includes at least one of the following: a liquid crystal display screen, a light-emitting diode (LED) display screen, and an organic light-emitting diode (OLED) display screen. The projection device can project the information to be displayed onto at least one of the following: a screen, a wall, and a floor. Exemplarily, the projection device may include a projection lens, and optionally, a processor connected to the projection device, which is used to acquire the information to be projected and control the projection lens to perform projection.

[0139] In one optional implementation, the first environment in which the first space is located satisfies at least one of the following conditions: the concentration of at least one substance in the first environment is less than or equal to a second threshold, the temperature of the first environment is within a first preset range, and the humidity of the first environment is within a second preset range.

[0140] When the concentration of at least one substance in the first environment is less than or equal to a second threshold, the interference of the first detection result of the first gas to be detected by the first environment can be reduced, thereby improving the accuracy of the first detection result. For example, the second threshold is 0.02 milligrams per cubic meter.

[0141] When the temperature of the first environment is within a first preset range, the ambient temperature corresponding to the first detection result can be clearly identified, and the first detection result can be compared with the detection results of gases whose ambient temperatures are within the first preset range, thus reducing the influence of ambient temperature on the comparison results. The first preset range can be set based on actual needs. Optionally, the first preset range is determined based on the average temperature of the first environment. For example, the first space is located at location A, meaning the first environment is location A. If the average temperature of location A is 25 degrees Celsius, then the first preset range can be a range of 25 degrees Celsius plus or minus 5 degrees Celsius, i.e., the first preset range is 20 degrees Celsius to 30 degrees Celsius. Optionally, the first preset range is determined based on the temperature of the operating environment of the first space. For example, the first space is the space inside a vehicle. Since the operating environment temperature of the vehicle is 25 degrees Celsius, then the first preset range can be a range of 25 degrees Celsius plus or minus 5 degrees Celsius, i.e., the first preset range is 20 degrees Celsius to 30 degrees Celsius.

[0142] When the humidity of the first environment is within the second preset range, the environmental humidity corresponding to the first detection result can be clearly identified, and the first detection result can be compared with the detection results of gases in environments with humidity within the second preset range, reducing the influence of environmental humidity on the comparison results. The second preset range can be set based on actual needs. Optionally, the second preset range is determined based on the average humidity of the first environment. For example, the first space is located inside a detection chamber, i.e., the first environment is the environment inside the detection chamber. If the average humidity inside the detection chamber is 50%, then the first preset range can be a range of 50% plus or minus 10%, i.e., the second preset range is 40% to 60%. Optionally, the second preset range is determined based on the humidity of the usage environment of the first space. For example, the first space is the space inside a vehicle. Since the humidity of the vehicle's usage environment is 50%, then the second preset range can be a range of 50% plus or minus 10%, i.e., the second preset range is 40% to 60%.

[0143] With the increasing prevalence of vehicles, more and more people are spending long hours driving and traveling, making the quality of air quality inside vehicles a growing health concern. The following discussion will use the first space (the interior of the vehicle) as an example, combined with... Figure 7 This document details the process for detecting gases inside a vehicle.

[0144] Please see Figure 7 , Figure 7 This document provides a flowchart illustrating another gas detection method for embodiments of this application. Figure 7 As shown, the vehicle is first placed inside the detection chamber. The environment inside the detection chamber is the first environment in which the vehicle is located. The vehicle is sealed for 2 hours at a temperature of 25 degrees Celsius inside the detection chamber. Then, a first gas to be detected is collected from inside the vehicle using a gas collection device. For example, gas is collected from inside the vehicle for 5 minutes using the gas collection device to obtain the first gas to be detected. Optionally, the gas collection device includes at least one of the following: a gas collection container, a gas absorption liquid, and a gas adsorbent. Based on the first gas to be detected, a mass spectrum of the substances in the first gas to be detected is obtained. Optionally, the first gas to be detected is processed using a GC-MS device or a proton transfer reaction mass spectrometer (PTR-MS) device to obtain the mass spectrum of the substances in the first gas to be detected.

[0145] Obtain a mass spectrum library, wherein the mass spectrum library includes mass spectra of at least one substance, and the type of at least one substance is known. Optionally, the at least one substance includes volatile organic compounds found in vehicles; for example, the at least one substance includes: benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde, and acrolein.

[0146] The mass spectrum of substance w3 in the first gas to be detected is compared with that of substance w4 in the mass spectrum library. If the comparison is positive, it indicates that substance w3 and substance w4 are the same type, and the concentration of substance w3 in the first gas to be detected is determined. For example, if substance w4 is formaldehyde, then if the mass spectrum of substance w3 is similar to that of substance w4, substance w3 in the first gas to be detected is determined to be formaldehyde, and the concentration of formaldehyde in the first gas to be detected is determined.

[0147] If the judgment result is negative, it means that the type of substance w3 is different from that of substance w4. Then, it is further determined whether the mass spectrum of substance w3 is similar to that of substance w5 in the mass spectrum library. If the judgment result is positive, it means that the type of substance w3 is the same as that of substance w5. Then, the concentration of substance w3 in the first gas to be detected is determined.

[0148] If the mass spectrum of substance w3 is dissimilar to that of any substance in the mass spectrum library, then substance w3 is different from at least one substance. For example, at least one substance includes benzene and formaldehyde, indicating that substance w3 is neither benzene nor formaldehyde.

[0149] If the mass spectrum of each substance in the first gas to be detected is dissimilar to the mass spectrum of any substance in the mass spectrum library, then the first gas to be detected does not include at least one substance. For example, at least one substance includes benzene and formaldehyde, indicating that the first gas to be detected does not include benzene and formaldehyde.

[0150] After obtaining the type and concentration of the substance in the first gas to be detected, a first detection result can be obtained based on the type and / or concentration of the substance. Optionally, the first detection result includes the type of substance in the first gas to be detected, the concentration of the substance in the first gas to be detected, and at least one of the following: the TVOC of the first gas to be detected, the vehicle identification number (VIN) of the vehicle, information related to the time elapsed since obtaining the first detection result, environmental information related to the first gas to be detected, and information related to the source of the substance in the first gas to be detected.

[0151] Based on the concentration of substances in the first gas to be tested, it can be determined whether the concentration of each volatile organic compound (VOC) in the vehicle exceeds the standard. When the concentration of VOCs exceeds the standard, appropriate remediation measures are taken. For example, remediation methods include at least one of the following: replacing the vehicle's filter, exposing the vehicle to sunlight, and washing it. After remediation, the gas in the vehicle can be collected again and retested using the gas detection method described above until the test results indicate that the concentration of each VOC in the vehicle does not exceed the standard, thereby effectively solving the problem of excessive VOCs in the vehicle.

[0152] Optionally, based on the concentration of substances in the first gas to be detected, it can be determined whether the concentration of a certain type of substance exceeds the standard. For example, it can be determined whether the concentration of aldehydes or ketones exceeds the standard.

[0153] Please see Figure 8 , Figure 8 This is a schematic flowchart illustrating a process for constructing a volatile organic compound mass spectrum library, provided as an embodiment of this application. Figure 8 First, by calibrating volatile organic compounds (VOCs), the types of VOCs to be detected are determined. Simultaneously, gases containing VOCs are acquired. For example, if calibration determines that there are 268 types of VOCs in a vehicle, then 268 gases can be acquired, each containing one VOC. Then, based on the gases containing VOCs, organic volatile samples are obtained. Optionally, based on the gases containing VOCs, samples of different concentrations of VOCs are prepared. For example, if VOCs include formaldehyde, samples of different concentrations of formaldehyde can be prepared. Next, the VOC samples are processed using a gas detection device to obtain mass spectra of the VOCs. Optionally, the gas detection device can be one of the following: a GC-MS device or a PTR-MS device. Finally, based on the mass spectra of all VOCs, a VOC mass spectrum library is obtained. The VOC mass spectrum library can be stored in the gas detection device or on a server.

[0154] Please see Figure 9 , Figure 9 This is a schematic flowchart illustrating another gas detection method provided in an embodiment of this application. Figure 9As shown, after obtaining the mass spectrum of the substances in the first gas to be detected, the mass spectrum of the substances in the first gas to be detected is compared with the mass spectra in the mass spectrum library, thereby determining the type and concentration of the substances in the first gas to be detected. Finally, the first detection result is output. Optionally, the first detection result is output in the form of a detection report. For example, based on the first detection result, a detection report in portable document format (PDF) is obtained and output. For example, the detection report includes Table 1 below.

[0155]

[0156] Table 1 Table 1 shows the concentrations of volatile organic compounds (VOCs) in vehicles of model X1 and VIN N1, and in vehicles of model X2 and VIN N2. The concentrations in Table 1 are expressed in parts per billion (PPB). For example, the benzene concentration in vehicle X1 with VIN N1 is 1.25 PPB, which is the product of the volume of benzene in the vehicle and the volume of gas in the vehicle.

[0157] Optionally, outputting a test report may include displaying the test report on a display interface, allowing the user to obtain the first test result for the first gas to be tested. Outputting a test report may also include sending a print instruction to a printing device, wherein the print instruction instructs the printing device to print the test report.

[0158] The methods of the embodiments of this application have been described in detail above. The apparatus of the embodiments of this application is provided below. It should be understood that the division of units in the apparatus provided in this application embodiment is only a logical functional division. In actual implementation, all or part of them can be integrated into a single physical entity, or they can be physically separated. Furthermore, the units in the apparatus can be implemented by a processor calling software. For example, the apparatus includes a processor connected to a memory, which stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit in the apparatus. The processor is, for example, a general-purpose processor, such as a CPU, a microcontroller unit (MCU), or a microprocessor unit (MPU), and the memory is either internal or external to the apparatus.

[0159] Alternatively, the units in the device can be implemented as hardware circuits. The functionality of some or all of the units can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the above units is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through a configuration file, thereby achieving the functionality of some or all of the above units.

[0160] In the embodiments of this application, each unit in the device may be one or more processors (or processing circuits) configured to implement the above methods, such as: CPU, MCU, graphics processing unit (GPU), neural network processing unit (NPU), tensor processing unit (TPU), deep learning processing unit (DPU), MPU, digital signal processor (DSP), application-specific integrated circuit (ASIC), FPGA, or a combination of at least two of these processor forms.

[0161] Furthermore, the units in the above devices can be integrated in whole or in part, or they can be implemented independently. In one implementation, these units are integrated together as a system-on-chip (SOC). The SOC may include at least one processor for implementing any of the above methods or for implementing the functions of the units in the device. The at least one processor may be of different types, such as including a CPU and an FPGA, or including a CPU and an MCU, or including a CPU and a GPU, etc. Several possible devices are listed below.

[0162] Please see Figure 10 , Figure 10This is a schematic diagram of a gas detection device provided in an embodiment of this application. Optionally, the gas detection device 100 can be a standalone device, such as a processing device. Alternatively, the gas detection device 100 can also be a component within a standalone device (such as a computer), such as a chip or integrated circuit. The gas detection device 100 is used to implement the aforementioned gas detection method, for example... Figure 10 The gas detection method and its possible implementation methods are shown.

[0163] For example, the gas detection device 100 includes a communication unit 1001 and further includes a processing unit 1002. The communication unit 1001 is used to perform one or more operations such as sending, receiving, and acquiring, while the processing unit 1002 is used to perform one or more operations such as processing, determining, generating, calculating, and updating. It should be understood that the unit division here is only illustrative; in actual implementation, some units may be combined together, or one unit may be divided into multiple units.

[0164] In one possible design, the communication unit 1001 is used to acquire first characteristic information of a first gas to be detected. The processing unit 1002 is used to obtain a first detection result of the first gas to be detected based on the first characteristic information and at least one second characteristic information, wherein the at least one second characteristic information includes characteristic information of at least one substance, and the first detection result includes information about the substance in the first gas to be detected and at least one of the following: information related to the time elapsed since the first detection result was obtained, environmental information related to the first gas to be detected, and information related to the source of the substance in the first gas to be detected.

[0165] In one possible implementation, the processing unit 1002 is further configured to determine the confidence level of the first detection result based on information related to the duration of obtaining the first detection result.

[0166] In one possible implementation, the environmental information associated with the first gas to be detected includes at least one of the following: the temperature of the environment in which the first gas to be detected is located, and the humidity of the environment in which the first gas to be detected is located.

[0167] In one possible implementation, the first gas to be detected is collected from a first space.

[0168] In one possible implementation, the first detection result further includes at least one of the following: the collection flow rate of the first gas to be detected, and information related to the collection time of the first gas to be detected.

[0169] In one possible implementation, the first space is a space within a detection chamber. The detection chamber includes a sealing assembly for sealing and is equipped with a temperature control device, a humidity control device, an air purification system, a gas collection device, and a gas detection device. The temperature control device is used to regulate the temperature of the detection chamber. The humidity control device is used to regulate the humidity of the detection chamber. The air purification system is used to purify the air in the detection chamber. The gas collection device is used to collect a first gas to be detected from a sampling point within the first space. The gas detection device is used to perform a gas detection method.

[0170] In one possible implementation, the gas collection device includes a detection conduit with a first end facing the sampling point and a second end for connecting to a gas detection device.

[0171] In one possible implementation, the bottom wall of the detection chamber is provided with a track for the movement of the gas collection device and / or the gas detection device.

[0172] In one possible implementation, the first space includes the space inside the vehicle.

[0173] In one possible implementation, the detection chamber includes at least one parking space for parking a vehicle.

[0174] In one possible implementation, the location of the sampling point is determined based on at least one of the following: the location of the occupant's nose inside the vehicle, or the location of the occupant's mouth inside the vehicle.

[0175] In one possible implementation, the first detection result further includes the state of the vehicle when the first gas to be detected is collected from a sampling point inside the vehicle.

[0176] In one possible implementation, the first detection result further includes the state of the vehicle when the first gas to be detected is collected from a sampling point inside the vehicle.

[0177] In one possible implementation, the processing unit 1002 is also configured to control the fill light to stop emitting supplementary light when the positional relationship indicates that the user's line of sight is not facing the mirror.

[0178] In one possible implementation, the communication unit 1001 is further configured to acquire a second detection result of the second gas to be detected, wherein the second gas to be detected is collected from the second space, and the second detection result includes information about the substances in the second gas to be detected. The processing unit 1002 is further configured to, when the time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, obtain a comparison result of the information about the substances in the first gas to be detected and the information about the substances in the second gas to be detected based on the first detection result and the second detection result.

[0179] In one possible implementation, the processing unit 1002 is further configured to display at least one of the following in the detection chamber: a first detection result, a second detection result, and a comparison result.

[0180] In one possible implementation, the first environment in which the first space is located satisfies at least one of the following conditions: the concentration of at least one substance in the first environment is less than or equal to a second threshold, the temperature of the first environment is within a first preset range, and the humidity of the first environment is within a second preset range.

[0181] In one possible implementation, information about the substances in the first gas to be detected indicates the type and / or concentration of the substances in the first gas to be detected.

[0182] In one possible implementation, the first feature information includes a mass spectrum of a substance in a first gas to be detected, and at least one second feature information includes a mass spectrum of at least one substance.

[0183] In one possible implementation, at least one substance includes volatile organic compounds.

[0184] For a detailed description of the above embodiments, please refer to the foregoing description of the method embodiments.

[0185] Please see Figure 11 , Figure 11 This is a schematic diagram of another gas detection device provided in an embodiment of this application, as shown below. Figure 11 The gas detection device 110 shown can be a standalone device, such as a processing unit. Alternatively, the gas detection device 110 can also be a component within a standalone device (such as a computer), such as a chip or integrated circuit. The gas detection device 110 is used to implement the aforementioned gas detection method, for example... Figure 4 The gas detection method and its possible implementation methods are shown.

[0186] The gas detection device 110 may include at least one processor 1101 and a memory 1103. Optionally, it may also include a communication interface 1102. Further optionally, it may also include a connection line 1104, wherein the processor 1101, the communication interface 1102 and / or the memory 1103 are connected via the connection line 1104, and / or communicate with each other via the connection line 1104 to transmit control signals and / or data signals.

[0187] Wherein: processor 1101 is a module for performing arithmetic and / or logical operations, and may specifically include one or more of the following modules: CPU, MCU, application processor (AP), MCU, electronic control unit (ECU), GPU, MPU, ASIC, image signal processor (ISP), DSP, FPGA, complex programmable logic device (CPLD), or coprocessor, etc.

[0188] The communication interface 1102 can be used to provide information input or output to at least one processor, or to receive and / or transmit signals to externally transmitted signals. For example, the communication interface 1102 may include interface circuitry. For instance, the communication interface 1102 may include a wired link interface such as an Ethernet cable, or a wireless link interface (Wi-Fi, Bluetooth, general wireless transmission, vehicular short-range communication technology, and other short-range wireless communication technologies, etc.). Optionally, the communication interface 1102 may also include a radio frequency transmitter, an antenna, etc. If the communication interface 1102 includes an antenna, the number of antennas can be one or more.

[0189] As one possible design, if the gas detection device 110 is a standalone device, the communication interface 1102 may include a receiver and a transmitter. The receiver and transmitter may be the same component or different components. When the receiver and transmitter are the same component, this component may be referred to as a transceiver.

[0190] As another possible design, if the gas detection device 110 is a chip or circuit, the communication interface 1102 may include an input interface and an output interface. The input interface and the output interface may be the same interface or they may be different interfaces.

[0191] Optionally, the functions of the communication interface 1102 can be implemented by a transceiver circuit or a dedicated transceiver chip.

[0192] The memory 1103 provides storage space, in which data such as the operating system and computer programs can be stored. The memory 1103 can be one or a combination of RAM, ROM, erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM), etc.

[0193] The functions and actions of each module or unit in the gas detection device 110 listed above are merely illustrative examples.

[0194] Each functional unit in the gas detection device 110 can be used to implement the aforementioned gas detection method, for example... Figure 4 The gas detection method and its possible implementation methods are shown.

[0195] Optionally, processor 1101 may be a processor specifically designed to execute the aforementioned methods (for ease of distinction, referred to as a dedicated processor), or a processor that executes the aforementioned methods by calling a computer program (for ease of distinction, referred to as a dedicated processor). Optionally, at least one processor may include both dedicated processors and general-purpose processors.

[0196] Optionally, if the gas detection device 110 includes at least one memory 1103, and the processor 1101 implements the aforementioned gas detection method by calling a computer program, the computer program can be stored in the memory 1103.

[0197] This application also provides a chip, which includes logic circuitry and a communication interface. The communication interface is used to receive or transmit signals; the logic circuitry is used to receive or transmit signals through the communication interface. The chip is used to implement the aforementioned gas detection method, for example... Figure 4 The gas detection method and its possible implementation methods are shown.

[0198] This application also provides a computer-readable storage medium storing instructions that, when executed on at least one processor (or gas detection device), implement the aforementioned gas detection method, for example... Figure 4 The gas detection method and its possible implementation methods are shown in the embodiments.

[0199] This application also provides a computer program product, which includes computer instructions for implementing the aforementioned gas detection method, for example... Figure 4 The gas detection method and its possible implementation methods are shown.

[0200] This application also provides a terminal, which includes a gas detection device 100 or a gas detection device 110.

[0201] It should be understood that the vehicles mentioned above are vehicles in a broad sense, which can include means of transportation (such as commercial vehicles, passenger cars, motorcycles, flying cars, trains, etc.), industrial vehicles (such as forklifts, trailers, tractors, etc.), engineering vehicles (such as excavators, bulldozers, cranes, etc.), agricultural equipment (such as lawnmowers, harvesters, etc.), etc.

[0202] In this embodiment, the names of information and devices are exemplary for ease of understanding of the content of this solution; in specific implementations, their names may have other designs. Furthermore, different names may exist for the same thing in different scenarios.

[0203] In addition, a few additional points need to be made regarding this application: 1. Unless otherwise stated, “multiple” means two or more.

[0204] 2. Unless otherwise specified or in case of logical conflict, the terms and / or descriptions in different embodiments of this application are consistent and can be referenced in each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0205] III. The various numerical designations used in this application are merely for descriptive convenience and are not intended to limit the scope of protection of this application. The magnitude of the serial numbers used in this application does not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic. For example, the terms "first," "second," "third," "fourth," and other various terminology (if present) in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0206] Furthermore, any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner for ease of understanding.

[0207] IV. The terms “comprising” and “having” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product or device.

[0208] V. In this application, "for indicating" can be understood as "enabling". "Enabling" can include direct enabling and indirect enabling. When describing information for enabling A, it can include whether the information directly enables A or indirectly enables A, but does not necessarily mean that the information carries A.

[0209] The information that enables the information is called the information to be enabled. In the specific implementation process, there are many ways to enable the information to be enabled, such as, but not limited to, directly enabling the information to be enabled, such as the information itself or its index. It can also be indirectly enabled by enabling other information, where there is a relationship between the other information and the information to be enabled. It can also enable only a part of the information to be enabled, while the other parts are known or pre-agreed upon. For example, enabling specific information can be achieved by using a pre-agreed (e.g., protocol-defined) order of various pieces of information, thereby reducing enabling overhead to some extent. Simultaneously, common parts of various pieces of information can be identified and enabled uniformly to reduce the enabling overhead caused by individually enabling the same information.

[0210] VI. The term "storage" or "preservation" as used in this application can refer to storage in one or more memory devices. These memory devices can be separately configured or integrated into an encoder or decoder, processor, or communication device. They can also be partially separately configured and partially integrated into a decoder, processor, or communication device. The type of memory can be any form of storage medium, and this is not limited.

[0211] 7. Unless otherwise stated, " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B can mean A or B. In this application, "and / or" is merely a description of the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural.

[0212] 8. The names of devices, equipment, modules, and information in this application are merely examples. In actual implementation, the names of the above-mentioned things may be designed in other ways. For example, a vehicle sun visor control device may be replaced with a control device, etc.

Claims

1. A gas detection method, characterized in that, The method includes: Obtain the first characteristic information of the first gas to be detected; Based on the first feature information and at least one second feature information, a first detection result of the first gas to be detected is obtained. The at least one second feature information includes feature information of at least one substance. The first detection result includes information about the substance in the first gas to be detected and at least one of the following: information related to the time it takes to obtain the first detection result, environmental information related to the first gas to be detected, and information related to the source of the substance in the first gas to be detected.

2. The method according to claim 1, characterized in that, The method further includes: Based on the information related to the time taken to obtain the first detection result, the confidence level of the first detection result is determined.

3. The method according to claim 1 or 2, characterized in that, The environmental information related to the first gas to be detected includes at least one of the following: the temperature of the environment in which the first gas to be detected is located, and the humidity of the environment in which the first gas to be detected is located.

4. The method according to any one of claims 1 to 3, characterized in that, The first gas to be detected was collected from the first space.

5. The method according to claim 4, characterized in that, The first detection result further includes at least one of the following: the collection flow rate of the first gas to be detected, and information related to the collection time of the first gas to be detected.

6. The method according to claim 4 or 5, characterized in that, The first space is the space inside the detection chamber, which includes a sealing assembly for sealing, and is equipped with a temperature control device, a humidity control device, an air purification system, a gas collection device, and a gas detection device. The temperature control device is used to adjust the temperature of the detection chamber; The humidity control device is used to adjust the humidity of the detection chamber; The air purification system is used to purify the air in the detection chamber; The gas collection device is used to collect the first gas to be detected from the sampling point in the first space; The gas detection device is used to perform the gas detection method.

7. The method according to claim 6, characterized in that, The gas collection device includes a detection conduit, with a first end facing the sampling point and a second end for connecting to the gas detection device.

8. The method according to claim 6 or 7, characterized in that, The bottom wall of the detection chamber is provided with a track for the movement of the gas collection device and / or the gas detection device.

9. The method according to any one of claims 6 to 8, characterized in that, The first space includes the space inside the vehicle.

10. The method according to claim 9, characterized in that, The detection chamber includes at least one parking space for parking the vehicle.

11. The method according to claim 9 or 10, characterized in that, The location of the sampling point is determined based on at least one of the following: the location of the occupant's nose in the vehicle, or the location of the occupant's mouth in the vehicle.

12. The method according to any one of claims 9 to 11, characterized in that, The first detection result also includes: the state of the vehicle when the first gas to be detected is collected from the sampling point inside the vehicle.

13. The method according to any one of claims 9 to 12, characterized in that, The sources of the substances in the first gas to be detected include components inside the vehicle.

14. The method according to any one of claims 1 to 13, characterized in that, The method further includes: A second detection result is obtained for a second gas to be detected, the second gas to be detected being collected from a second space, and the second detection result includes information about the substances in the second gas to be detected. If the time interval between the collection time of the first gas to be detected and the collection time of the second gas to be detected is less than or equal to a first threshold, a comparison result of the information of the substances in the first gas to be detected and the information of the substances in the second gas to be detected is obtained based on the first detection result and the second detection result.

15. The method according to claim 14, characterized in that, The method further includes: The detection chamber displays at least one of the following: the first detection result, the second detection result, and the comparison result.

16. The method according to any one of claims 4 to 13, characterized in that, The first environment in which the first space is located satisfies at least one of the following conditions: the concentration of the at least one substance in the first environment is less than or equal to a second threshold, the temperature of the first environment is within a first preset range, and the humidity of the first environment is within a second preset range.

17. The method according to any one of claims 1 to 16, characterized in that, The information about the substances in the first gas to be detected indicates the type of substances in the first gas to be detected and / or the concentration of substances in the first gas to be detected.

18. The method according to any one of claims 1 to 17, characterized in that, The first feature information includes the mass spectrum of the substance in the first gas to be detected, and the at least one second feature information includes the mass spectrum of the at least one substance.

19. The method according to any one of claims 1 to 18, characterized in that, The at least one substance includes volatile organic compounds.

20. A gas detection device, characterized in that, Includes units for performing the method as described in any one of claims 1 to 19.

21. A gas detection device, characterized in that, The gas detection device includes a processor for performing the method as described in any one of claims 1 to 19.

22. A chip, characterized in that, It includes logic circuits and interfaces, wherein the logic circuits and the interfaces are coupled; The interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method as described in any one of claims 1 to 19.

23. A terminal, characterized in that, This includes the gas detection device as described in claim 20, or the gas detection device as described in claim 21, or the chip as described in claim 22.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, which, when executed, performs the method as described in any one of claims 1 to 19.

25. A computer program product, characterized in that, The computer program product includes computer language code or computer instructions; When the computer program product is executed by a processor, the method as described in any one of claims 1 to 19 is performed.

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