Near space mass spectrometry detection device and method

Abstract

The invention provides a near space mass spectrum detection device and method, and is applied to the technical field of near space detection. Comprising a high-altitude balloon platform, an enrichment module, an ion source and a portable mass spectrometer, the enrichment module, the ion source and the portable mass spectrometer are arranged in a pod of the high-altitude balloon platform, the enrichment module is connected with the ion source, and the ion source is connected with the portable mass spectrometer and the high-altitude balloon platform and used for bearing the pod to lift to different spatial positions of a near space; the enrichment module is used for collecting a target substance in the near space; the ion source is used for carrying out ionization treatment on the target substance and sending ions into the vacuum cavity of the portable mass spectrometer; and the portable mass spectrometer is used for determining the mass-to-charge ratio of the ions and determining the structure and content of the target substance based on the mass-to-charge ratio of the ions.

Description

Technical Field

[0001] The present invention relates to the field of near-space detection technology, and in particular to a near-space mass spectrometry detection device and method. Background Art

[0002] Near-space is the space between 20 and 100 kilometers above the Earth's surface. This region covers part of the stratosphere and troposphere. It is the key to a deeper understanding of atmospheric chemistry, atmospheric dynamics, and the interaction between the Earth and space. It is of great significance to the study of atmospheric behavior, the construction of climate models, and the understanding of space weather conditions. In-situ detection and analysis of near-space chemicals is a critical step in obtaining accurate real-time data.

[0003] In the existing technology, satellite monitoring or aircraft monitoring can be used to observe and study near-space. However, satellite monitoring is expensive, with huge launch and maintenance costs, and limited spatial and temporal resolution, making it difficult to achieve high-precision, high-frequency local monitoring. Aircraft monitoring has high flight costs, is difficult to cover areas near the air, and has limitations in monitoring range. Summary of the invention

[0004] The present invention provides a near-space mass spectrometry detection device and method, which are used to solve the problems of high cost, limitation of monitoring method and monitoring range in the prior art near-space monitoring method.

[0005] The present invention provides a near-space mass spectrometry detection device, comprising: a high-altitude balloon platform, an enrichment module, an ion source, and a portable mass spectrometer; the enrichment module, the ion source, and the portable mass spectrometer are arranged in a pod of the high-altitude balloon platform, the enrichment module is connected to the ion source, and the ion source is connected to the portable mass spectrometer; the high-altitude balloon platform is used to carry the pod to launch to different spatial positions in the near-space; the enrichment module is used to collect target substances in the near-space; the ion source is used to ionize the target substances and send the ions into a vacuum chamber of the portable mass spectrometer; the portable mass spectrometer is used to determine the mass-to-charge ratio of the ions, and determine the structure and content of the target substances based on the mass-to-charge ratio of the ions.

[0006] According to a near-space mass spectrometry detection device provided by the present invention, the portable mass spectrometer includes an environmental sensor and a mass axis correction model; the environmental sensor is used to detect environmental parameters; the mass axis correction model is used to determine the degree of influence of the corresponding environment on the mass axis deviation based on the environmental parameters and correct the mass-to-charge ratio of the ions based on the influence degree; the portable mass spectrometer is used to determine the structure and content of the target substance based on the corrected mass-to-charge ratio of the ions.

[0007] According to a near-space mass spectrometry detection device provided by the present invention, the mass axis correction model updates model parameters based on mass spectrum data collected by the ring mold box.

[0008] According to a near-space mass spectrometry detection device provided by the present invention, the environmental sensor includes at least one of the following: a temperature sensor, an air pressure sensor, and a vibration sensor.

[0009] According to a near-space mass spectrometry detection device provided by the present invention, the mass range of the portable mass spectrometer is 0-2000 m / z.

[0010] A near-space mass spectrometry detection device provided according to the present invention also includes an energy storage battery; the energy storage battery is arranged in the cabin of the high-altitude balloon platform; the energy storage battery is respectively connected to the enrichment module, the ion source and the portable mass spectrometer; the energy storage battery is used to provide electrical energy for the enrichment module, the ion source and the portable mass spectrometer.

[0011] The present invention also provides a near-space mass spectrometry detection method, which is applied to the above-mentioned near-space mass spectrometry detection device, comprising: releasing the high-altitude balloon platform and waiting for the high-altitude balloon platform to ascend to the near-space region; starting the enrichment device, the ion source and the portable mass spectrometer, and combining environmental parameters, performing online in-situ detection of the target substance in the target region to obtain a mass spectrum; storing and analyzing the mass spectrum, determining the mass-to-charge ratio of the target substance by comparing with a database, and further determining the structure and content of the target substance by cascade mass spectrometry analysis; after completing the detection of the target region, adjusting the rising height of the high-altitude balloon platform by adjusting the counterweight, and sequentially performing in-situ mass spectrometry detection and analysis of the target substance at different altitudes; after completing the predetermined mass spectrometry analysis task, cutting off the high-altitude balloon of the high-altitude balloon platform, and opening the parachute to recover the items in the pod.

[0012] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the above-described near-space mass spectrometry detection methods is implemented.

[0013] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the near-space mass spectrometry detection method as described in any one of the above is implemented.

[0014] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the near-space mass spectrometry detection method as described above is implemented.

[0015] The near-space mass spectrometry detection device and method provided by the present invention can, on the one hand, send an enrichment module, an ion source, and a portable mass spectrometer into near-space for in-situ detection of target substances via a high-altitude balloon platform, thereby avoiding contamination during the sampling and transportation processes, thereby more accurately and truly reflecting the distribution of target substances in near-space; on the other hand, the altitude and time of the high-altitude balloon platform can be controlled, so that high-time resolution and high-spatial resolution detection of specific target areas in near-space can be achieved on the basis of relatively low investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic structural diagram of a near-space mass spectrometry detection device provided by the present invention; Figure 2 This is one of the flow diagrams of the near-space mass spectrometry detection method provided by the present invention; Figure 3 This is the second flow chart of the near-space mass spectrometry detection method provided by the present invention; Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0020] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0021] In order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution.

[0022] The embodiments of the present application describe some exemplary embodiments for the purpose of explanation. It should be understood that the present application can be implemented in other ways that are not specifically shown in the drawings.

[0023] like Figure 1 As shown, an embodiment of the present application provides a near-space mass spectrometry detection device, which includes a high-altitude balloon platform 110, an enrichment module 120, an ion source 130, and a portable mass spectrometer 140; the enrichment module 120, the ion source 130, and the portable mass spectrometer 140 are arranged in a cabin of the high-altitude balloon platform 110, the enrichment module 120 is connected to the ion source 130, and the ion source 130 is connected to the portable mass spectrometer 140.

[0024] The high-altitude balloon platform 110 is used to carry the pod into the air and reach different spatial locations in the near space.

[0025] The enrichment module 120 is used to collect the target substance in the near space.

[0026] The ion source 130 is used to ionize the target substance and send the ions into the vacuum chamber of the portable mass spectrometer.

[0027] The portable mass spectrometer 140 is used to determine the mass-to-charge ratio of ions, and determine the structure and content of the target substance based on the mass-to-charge ratio of the ions.

[0028] Specifically, the near-space mass spectrometry detection device includes a high-altitude balloon platform 110, an enrichment module 120, an ion source 130, and a portable mass spectrometer 140. Among them, the high-altitude balloon platform 110 is the carrier of the entire device, which can bring the portable mass spectrometer to the near-space at an altitude of tens of kilometers for in-situ detection. Since the atmosphere in the near-space is very thin and the absolute content of the target substance is extremely low, the enrichment module 120 is required to sample and enrich the target substance in the near-space. Through a special sampling technique, trace amounts of target substances in the atmosphere are collected and enriched so that the concentration of the target substance can reach a level that can be detected by subsequent detection equipment. Only when the target substance is converted into charged ions can it be detected by the subsequent portable mass spectrometer, so the ion source 130 is used to ionize the target substance collected by the enrichment device. The main function of the portable mass spectrometer 140 in this system is to perform in-situ detection in the near-space. It can analyze the mass-to-charge ratio of charged ions entering its vacuum chamber. Through the analysis of the mass-to-charge ratio, the types and properties of the ions can be preliminarily understood. In addition, it can also perform tandem mass spectrometry, which is an analytical method that can further fragment ions and analyze the mass-to-charge ratio and relative abundance of the fragment ions produced after fragmentation to more deeply determine the structure and relative content of the target substance.

[0029] It should be noted that other loads can be used to adjust the counterweight to adjust the rising height of the high-altitude balloon platform.

[0030] Optionally, the portable mass spectrometer has a mass range of 0-2000 m / z.

[0031] Specifically, the near-space environment is complex, and there are many types of target substances. The mass-to-charge ratio (m / z) distribution range of these target substances is very wide. For example, there are both small-molecule volatile organic compounds, which usually have a relatively small mass-to-charge ratio; and relatively large-molecule substances such as microorganisms may exist. Microorganisms are composed of biological macromolecules such as proteins, nucleic acids, and lipids. After ionization, these macromolecules often have a large mass-to-charge ratio. Since the mass-to-charge ratio of target substances in near-space is widely distributed, this requires that the portable mass spectrometer used in this environment must have a large mass range. Setting the mass range of the portable mass spectrometer to 0-2000 m / z can not only analyze small molecules, but also some organic substances such as lipids and proteins. In this way, the portable mass spectrometer can detect and analyze many different types of substances in near-space, so as to have a more comprehensive understanding of the material composition and related environmental characteristics of near-space.

[0032] Optionally, the portable mass spectrometer 140 includes an environmental sensor and a mass axis correction model; the environmental sensor is used to detect environmental parameters; the mass axis correction model is used to determine the influence degree of the corresponding environment on the mass axis offset based on the environmental parameters and correct the mass-to-charge ratio of the ions based on the influence degree; the portable mass spectrometer 140 is specifically used to determine the structure and content of the target substance based on the corrected mass-to-charge ratio of the ions.

[0033] Optionally, the environmental sensor includes at least one of the following: a temperature sensor, a pressure sensor, and a vibration sensor.

[0034] Specifically, the near space has extreme environmental conditions, such as drastic temperature changes, low air pressure, possible vibrations, and other factors. These extreme environments will have many adverse effects on the portable mass spectrometer, such as affecting the accuracy and stability of the instrument and even possibly damaging the instrument. To improve the robustness and reliability of the portable mass spectrometer, various changes in the surrounding environment can be sensed through sensors such as temperature, pressure, and vibration, such as whether the temperature is rising or falling, how the air pressure is changing, and whether there is vibration. Based on this sensed information, the mass axis correction model can determine the influence degree of environmental parameters such as temperature and air pressure at different positions on the mass axis offset, and the mass axis offset is a performance index that may affect the accurate measurement of the mass-to-charge ratio of ions by the mass spectrometer. Correcting the mass-to-charge ratio of the ions based on the influence degree can ensure that the portable mass spectrometer can still work stably and reliably in the complex and changeable extreme environment of the near space.

[0035] Optionally, the mass axis correction model updates the model parameters based on the mass spectrometry data collected by the ring mold box.

[0036] Specifically, as Figure 2 shown, first use a small mass spectrometer (i.e., a portable mass spectrometer) for detection. Two data are obtained from the mass spectrometry detection, namely the temperature and pressure data detected by the sensor from the ring mold box and the deviation value of the spectral peak position in the mass spectrometry diagram. Then, Pearson correlation analysis is performed on the obtained data to judge the influence degree of temperature and pressure at different positions. After that, an initial model is established and initial parameters are set: define the expected sum of squared residuals as r, define the maximum number of loops as N, and set N i = 0, where the training data set is the data source for model training and parameter optimization. Then calculate the residual r i , and update the loop count N i = N i +1. Determine whether the condition N i > N or r i < r, r is the residual target value. If the condition is not met (N i <= N and r i>= r), the model-related parameters are updated, and then the residual is recalculated. If the conditions are met, the optimized model parameters are output. By continuously optimizing the model parameters, a model suitable for parameter correction in extreme environments in near space can be obtained. This model can respond to environmental changes and adjust the corresponding parameters. In this way, the robustness and reliability of the portable mass spectrometer when working in near space can be guaranteed, so that it can operate normally under harsh environmental conditions.

[0037] Optionally, the near-space mass spectrometry detection device also includes an energy storage battery 150; the energy storage battery 150 is also arranged in the cabin of the high-altitude balloon platform 110; the energy storage battery 150 is respectively connected to the enrichment module 120, the ion source 130 and the portable mass spectrometer 140; the energy storage battery 150 is used to provide electrical energy for the enrichment module 120, the ion source 130 and the portable mass spectrometer 140.

[0038] In the embodiments of the present application, on the one hand, the enrichment module, the ion source and the portable mass spectrometer can be sent into the near-space for in-situ detection of the target substance via a high-altitude balloon platform. In this way, contamination during the sampling and transportation processes can be avoided, thereby more accurately and truly reflecting the distribution of the target substance in the near-space. On the other hand, the altitude and time of the high-altitude balloon platform can be controlled. In this way, high-time resolution and high-spatial resolution detection of specific target areas in the near-space can be achieved at a relatively low investment cost.

[0039] like Figure 3 As shown, the embodiment of the present application provides a near-space mass spectrometry detection method, which can be applied to a near-space mass spectrometry detection device. The near-space mass spectrometry detection method may include S301-S305: S301, releasing the high-altitude balloon platform, and waiting for the high-altitude balloon platform to ascend to a near-space area.

[0040] Optionally, the enrichment device, the ion source, and the portable mass spectrometer may be fixed in a pod of the high-altitude balloon platform and powered by the energy storage battery.

[0041] Specifically, key detection equipment such as the enrichment device, ion source, and portable mass spectrometer are placed and fixed in the cabin of the high-altitude balloon. These devices are the core of the entire detection system. The enrichment device is used to collect target substances, the ion source is used to ionize the target substances, and the portable mass spectrometer is used for detection and analysis. At the same time, the energy storage battery in the cabin is connected to the equipment to provide power for the entire detection device. As a power source, the energy storage battery can ensure that the equipment can operate normally during the flight of the high-altitude balloon.

[0042] After that, the high-altitude balloon is released, and it rises with the parachute and the equipment in the pod. Under the action of buoyancy, the high-altitude balloon gradually flies to the near-space area. During this process, the equipment can rise to the target altitude with the high-altitude balloon, preparing for subsequent in-situ detection.

[0043] S302, starting the enrichment device, the ion source and the portable mass spectrometer, and performing online in-situ detection on the target substance in the target area in combination with environmental parameters to obtain a mass spectrum.

[0044] Specifically, the enrichment device, ion source and portable mass spectrometer in the pod can be turned on by remote operation. This remote operation method avoids the problem that personnel cannot reach near-space, while also ensuring the safety of operation. During the detection process, the state of the substance and the test results can be comprehensively analyzed in combination with environmental data such as temperature and air pressure. Online in-situ detection of target substances in the target area, that is, direct detection of substances in the near-space area without bringing samples back to the ground, can avoid changes in samples during collection and transportation, and ensure the authenticity and reliability of the test results.

[0045] S303, storing and analyzing the mass spectrum, determining the mass-to-charge ratio of the target substance by comparing with a database, and further determining the structure and content of the target substance by tandem mass spectrometry analysis.

[0046] Specifically, the mass spectrum is a direct reflection of the test results, which contains key information such as the mass-to-charge ratio of the target substance. The mass-to-charge ratio of the target substance is verified by comparing the database. The database contains mass spectrum data of known substances, and the type of the target substance can be preliminarily determined by comparison. Tandem mass spectrometry analysis can then be performed to further determine the structure and relative content changes of the target substance. Tandem mass spectrometry analysis can provide more detailed information on the structure of the substance. By analyzing the mass-to-charge ratio and relative abundance of ion fragments, the composition and content changes of the substance can be deeply understood.

[0047] S304, after completing the detection of the target area, adjusting the rising height of the high-altitude balloon platform by adjusting the counterweight, and sequentially performing in-situ mass spectrometry detection and analysis of the target substances at different altitudes.

[0048] Specifically, after completing the test of a certain area, the height of the high-altitude balloon can be adjusted by adjusting the weight of the high-altitude balloon and changing its buoyancy. This method allows the detection system to perform in-situ mass spectrometry detection and analysis of target substances at different altitudes in turn, achieving comprehensive detection of different altitude areas in near space.

[0049] S305, after completing the predetermined mass spectrometry analysis task, cutting off the high-altitude balloon of the high-altitude balloon platform, and opening the parachute to recover the items in the pod.

[0050] Specifically, after completing the scheduled mass spectrometry analysis and other related tasks, the high-altitude balloon can be cut off to make it lose buoyancy. The parachute is then opened, and the deceleration effect of the parachute is used to safely land the pod and other items and recover them, ensuring that the equipment can be reused or for subsequent data extraction and research.

[0051] In the embodiments of the present application, on the one hand, the enrichment module, the ion source and the portable mass spectrometer can be sent into the near-space for in-situ detection of the target substance via a high-altitude balloon platform. In this way, contamination during the sampling and transportation processes can be avoided, thereby more accurately and truly reflecting the distribution of the target substance in the near-space. On the other hand, the altitude and time of the high-altitude balloon platform can be controlled. In this way, high-time resolution and high-spatial resolution detection of specific target areas in the near-space can be achieved at a relatively low investment cost.

[0052] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the method. In order to realize the above functions, it includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiment disclosed herein, the embodiment of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0053] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor (processor) 410 , a communication interface (Communications Interface) 420 , a memory (memory) 430 and a communication bus 440 , wherein the processor 410 , the communication interface 420 , and the memory 430 communicate with each other through the communication bus 440 . The processor 410 can call the logic instructions in the memory 430 to execute the near-space mass spectrometry detection method, which includes: releasing the high-altitude balloon platform and waiting for the high-altitude balloon platform to rise to the near-space area; starting the enrichment device, the ion source and the portable mass spectrometer, and combining environmental parameters, performing online in-situ detection of the target substance in the target area to obtain a mass spectrum; storing and analyzing the mass spectrum, determining the mass-to-charge ratio of the target substance by comparing the database, and further determining the structure and content of the target substance by cascade mass spectrometry analysis; after completing the detection of the target area, adjusting the ascent height of the high-altitude balloon platform by adjusting the counterweight, and performing in-situ mass spectrometry detection and analysis of the target substance at different altitudes in turn; after completing the predetermined mass spectrometry analysis task, cutting off the high-altitude balloon of the high-altitude balloon platform, and opening the parachute to recover the items in the pod.

[0054] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0055] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the near-space mass spectrometry detection method provided by the above-mentioned methods, which includes: releasing the high-altitude balloon platform and waiting for the high-altitude balloon platform to rise to the near-space area; starting the enrichment device, the ion source and the portable mass spectrometer, and combining environmental parameters, performing online in-situ detection of the target substance in the target area to obtain a mass spectrum; storing and analyzing the mass spectrum, determining the mass-to-charge ratio of the target substance by comparing with a database, and further determining the structure and content of the target substance by cascade mass spectrometry analysis; after completing the detection of the target area, adjusting the ascent height of the high-altitude balloon platform by adjusting the counterweight, and performing in-situ mass spectrometry detection and analysis of the target substance at different altitudes in turn; after completing the predetermined mass spectrometry analysis task, cutting off the high-altitude balloon of the high-altitude balloon platform, and opening the parachute to recover the items in the pod.

[0056] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the near-space mass spectrometry detection method provided by the above-mentioned methods, the method comprising: releasing the high-altitude balloon platform and waiting for the high-altitude balloon platform to ascend to the near-space region; starting the enrichment device, the ion source and the portable mass spectrometer, and combining environmental parameters, performing online in-situ detection of the target substance in the target area to obtain a mass spectrum; storing and analyzing the mass spectrum, determining the mass-to-charge ratio of the target substance by comparing with a database, and further determining the structure and content of the target substance by cascade mass spectrometry analysis; after completing the detection of the target area, adjusting the ascent height of the high-altitude balloon platform by adjusting the counterweight, and sequentially performing in-situ mass spectrometry detection and analysis of the target substance at different altitudes; after completing the predetermined mass spectrometry analysis task, cutting off the high-altitude balloon of the high-altitude balloon platform, and opening the parachute to recover the items in the pod.

[0057] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0058] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A near-space mass spectrometry detection device, characterized in that: include: High-altitude balloon platform, enrichment module, ion source, portable mass spectrometer; The enrichment module, the ion source and the portable mass spectrometer are arranged in a cabin of the high-altitude balloon platform, the enrichment module is connected to the ion source, and the ion source is connected to the portable mass spectrometer; The high-altitude balloon platform is used to carry the pod into the air and reach different spatial locations in the near space; The enrichment module is used to collect the target substance in the near space; The ion source is used to ionize the target substance and send the ions into the vacuum chamber of the portable mass spectrometer; The portable mass spectrometer is used to determine the mass-to-charge ratio of ions, and determine the structure and content of the target substance based on the mass-to-charge ratio of the ions.

2. The near-space mass spectrometry detection device according to claim 1, characterized in that: The portable mass spectrometer includes an environmental sensor and a mass axis correction model; The environmental sensor is used to detect environmental parameters; The mass axis correction model is used to determine the influence of the corresponding environment on the mass axis deviation based on the environmental parameters and to correct the mass-to-charge ratio of the ion based on the influence; The portable mass spectrometer is used to determine the structure and content of the target substance based on the calibrated mass-to-charge ratio of the ions.

3. The near-space mass spectrometry detection device according to claim 2, characterized in that: The mass axis correction model updates model parameters based on the mass spectrum data collected by the ring mold box.

4. The near-space mass spectrometry detection device according to claim 2, characterized in that: The environmental sensor includes at least one of the following: a temperature sensor, an air pressure sensor, and a vibration sensor.

5. The near-space mass spectrometry detection device according to claim 1, characterized in that: The mass range of the portable mass spectrometer is 0-2000 m / z.

6. The near-space mass spectrometry detection device according to claim 1, characterized in that: It also includes an energy storage battery; the energy storage battery is arranged in the cabin of the high-altitude balloon platform; the energy storage battery is respectively connected to the enrichment module, the ion source and the portable mass spectrometer; the energy storage battery is used to provide electrical energy for the enrichment module, the ion source and the portable mass spectrometer.

7. A near-space mass spectrometry detection method, characterized in that: Applied to the near-space mass spectrometry detection device according to any one of claims 1 to 6, the method comprising: Releasing the high-altitude balloon platform and waiting for the high-altitude balloon platform to ascend to a near-space area; Starting the enrichment device, the ion source and the portable mass spectrometer, and performing online in-situ detection of the target substance in the target area in combination with environmental parameters to obtain a mass spectrum; Storing and analyzing the mass spectra, determining the mass-to-charge ratio of the target substance by comparing with a database, and further determining the structure and content of the target substance by tandem mass spectrometry analysis; After completing the detection of the target area, the rising height of the high-altitude balloon platform is adjusted by adjusting the counterweight, and in-situ mass spectrometry detection and analysis of target substances at different altitudes are performed in sequence; After completing the predetermined mass spectrometry analysis task, the high-altitude balloon of the high-altitude balloon platform is cut off, and the parachute is opened to recover the items in the pod.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the near-space mass spectrometry detection method as claimed in claim 7 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the near-space mass spectrometry detection method as claimed in claim 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the near-space mass spectrometry detection method as claimed in claim 7 is implemented.

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