Laboratory control management method and system based on digital twinning

Abstract

The application discloses a laboratory control management method and system based on digital twinning, relates to the technical field of laboratory control management, and comprises the following steps: monitoring the gas in the laboratory; constructing a digital twinning model for the laboratory based on BIM model construction technology, dividing a gas generation area in the digital twinning model by an administrator, analyzing the detection points of the gas generation area, and testing the concentration relationship of each gas generation area through ventilation testing; analyzing the actual gas concentration in each gas generation area based on the concentration relationship and the monitored gas concentration; and the application is used to solve the problems that the existing laboratory control management technology cannot reasonably set sensors and effectively monitor the gas concentration of the emission source when monitoring the gas in the laboratory, thereby increasing the equipment cost and causing inaccurate monitoring of the real concentration of the gas in the laboratory.

Description

Technical Field

[0001] This invention relates to the field of laboratory control and management technology, specifically to a laboratory control and management method and system based on digital twins. Background Technology

[0002] Laboratory control and management technology refers to a technical system that integrates automation, informatization, and intelligent methods to systematically monitor, regulate, and optimize elements such as equipment, environment, processes, data, and safety within a laboratory.

[0003] Existing laboratory control and management technologies typically employ multiple sensors to monitor gases within the laboratory, which consumes space and increases equipment costs. On the other hand, some methods use a single optimal detection point with a single sensor, but this fails to capture the concentration of gases at the emission source, which is usually the highest concentration. Therefore, it's impossible to accurately determine the maximum concentration of different gases within the laboratory. For example, patent application CN118822268A discloses a "Laboratory Control and Management System Based on Digital Twins," which installs corresponding sensors in each functional area of ​​the laboratory to monitor gas, temperature, and humidity parameters. This increases equipment costs and space consumption. Furthermore, existing laboratory control and management technologies suffer from problems such as unreasonable sensor placement and ineffective monitoring of emission source gas concentrations, leading to increased equipment costs and inaccurate monitoring of the true gas concentration within the laboratory. Summary of the Invention

[0004] This invention aims to at least partially address one of the technical problems in the prior art. It involves installing a comprehensive gas monitoring device at the ventilation ducts of a laboratory to monitor the gases within the laboratory. Then, based on BIM modeling technology, a digital twin model of the laboratory is constructed. The administrator divides the digital twin model into gas generation zones and marks the gases produced in each zone. Detection points are selected for each gas generation zone, and testing devices are set up. Ventilation tests are then conducted on these zones. Based on the test results, the concentration relationship equations of the gas generation zones are analyzed. Finally, based on the concentration relationships and the monitored gas concentrations, the actual gas concentration in each gas generation zone is analyzed. This addresses the problems of existing laboratory control and management technologies, such as unreasonable sensor settings and the inability to effectively monitor the gas concentration of emission sources, leading to increased equipment costs and inaccurate monitoring of the true gas concentration within the laboratory.

[0005] To achieve the above objectives, in a first aspect, this application provides a laboratory control and management method based on digital twins, comprising the following steps:

[0006] Install a comprehensive gas monitoring device at the ventilation ducts in the laboratory to monitor the gas inside the laboratory;

[0007] Based on BIM model building technology, a digital twin model of the laboratory is built. The administrator divides the digital twin model into gas generation zones and marks the gas produced in each gas generation zone.

[0008] The detection points in the gas generation zone were analyzed, and the concentration relationship in each gas generation zone was tested through ventilation tests.

[0009] The actual gas concentration in each gas generation zone is analyzed based on the concentration relationship and the monitored gas concentration.

[0010] Furthermore, a comprehensive gas monitoring device is installed at the laboratory's ventilation ducts to monitor the gases within the laboratory, including the following sub-steps:

[0011] Install a comprehensive gas monitoring device at the exhaust vent of the laboratory's ventilation duct;

[0012] The integrated gas monitoring device is capable of detecting all unconventional gases;

[0013] The unconventional gas is a gas emitted from chemical reagents stored in the laboratory or a gas generated through a chemical reaction.

[0014] Furthermore, a digital twin model of the laboratory is constructed based on BIM model building technology. The administrator divides the digital twin model into gas generation zones and marks the gases produced in each zone, including the following sub-steps:

[0015] A digital twin model of the laboratory was built using BIM model building technology;

[0016] The administrator divides the area in the top view of the digital twin model and names the divided area as the gas generation zone;

[0017] Unconventional gases are associated with gas generation regions, and the unconventional gases corresponding to the gas generation regions are named regionally generated gases.

[0018] Furthermore, analyzing the detection points in the gas generation zone and testing the concentration relationship of each gas generation zone through ventilation tests includes the following sub-steps:

[0019] Select detection points and set up testing devices for the gas generation zone;

[0020] Ventilation tests were conducted in the gas generation area;

[0021] The concentration relationship equation of the gas generation zone was analyzed based on the results of ventilation tests.

[0022] Furthermore, setting up an exhaust gas test experimental group and installing test and detection devices in the gas generation area includes the following sub-steps:

[0023] Select any unconventional gas that does not exist in the laboratory as the test gas;

[0024] Mark the location of the exhaust vents in the top view of the digital twin model, and label them as exhaust points;

[0025] Each different gas generation zone is set up individually. For any gas generation zone, the outline of the gas generation zone is obtained and marked as the region outline.

[0026] Mark each endpoint on the area outline as an area boundary point, connect each area boundary point to the exhaust point, name the connecting line segment as a connecting line segment, retain the two outermost connecting line segments (i.e., the two connecting line segments with the largest included angle), delete the remaining connecting line segments, and name the retained connecting line segments as wind direction line segments.

[0027] Name the angle between the two wind direction line segments as the line segment angle, and draw an auxiliary ray with the exhaust point as the endpoint, such that the auxiliary ray bisects the line segment angle.

[0028] Find the intersection of the region outline and the auxiliary ray, name it the undetermined intersection point, and select the undetermined intersection point closest to the exhaust point as the detection point;

[0029] A testing device for detecting the test gas is set up at the detection point.

[0030] Furthermore, the ventilation test of the gas generation area includes the following sub-steps:

[0031] The ventilation system was tested by emitting test gases at different ventilation levels.

[0032] Furthermore, the analysis of the concentration relationship equation in the gas generation zone based on the ventilation test results includes the following sub-steps:

[0033] The ventilation levels are labeled W in ascending order of their intensity. n , where n is a positive integer and n is the index of W;

[0034] Get W n Concentration data for W n The concentrations detected in the concentration data are numbered using the symbol P. nm This indicates that the overall detected concentrations in the concentration data are numbered using the symbol G. nmThis represents the expression, where m is a positive integer and nm is the index of P and G, and P... nm This indicates that the ventilation setting is W. n At that time, the concentration G obtained from the m-th test through ventilation testing nm This indicates that the ventilation setting is W. n At that time, the m-th comprehensive detection concentration obtained through ventilation testing;

[0035] With G nm P is the X-axis. nm Establish a Cartesian coordinate system for the Y-axis, named the nth concentration relationship graph, and set P... nm According to G nm Enter the concentration relationship graph for the nth time, for each W n There is a corresponding concentration relationship graph for the nth concentration.

[0036] Perform linear regression analysis on the nth concentration relationship graph, and name the straight line obtained from the linear regression analysis the nth concentration relationship line;

[0037] Find the midpoint of the nth concentration relationship line and mark it as the midpoint of the nth concentration relationship. Then, mark the G value of the midpoint of the nth concentration relationship. nm and P nm Labeled as H1 n and H2 n ;

[0038] Calculate H2 n / H1 n The calculation results are marked as the nth reference relation, each W n There is a corresponding nth reference relation.

[0039] Furthermore, based on the concentration relationship and the monitored gas concentration, the analysis of the actual gas concentration in each gas generation zone includes the following sub-steps:

[0040] Obtain the current ventilation level of the ventilation system and mark it as the real-time level;

[0041] The concentration of unconventional gases monitored in the integrated gas monitoring device is obtained and marked as the real-time concentration. At the same time, the time when the real-time concentration is detected is recorded and marked as the real-time monitoring time.

[0042] When analyzing the real-time concentration of any unconventional gas, the corresponding unconventional gas and real-time concentration are marked as the gas to be analyzed and the concentration to be analyzed, respectively. The gas generation region corresponding to the concentration to be analyzed is found and marked as the region to be analyzed.

[0043] Find the TC (Traction Time) in the gear efficiency data of the area to be analyzed when the ventilation gear level is equal to the real-time gear level, and mark it as the real-time time difference;

[0044] The actual concentration of the gas to be analyzed in the analysis area is analyzed based on real-time monitoring time, real-time time difference, real-time concentration, and concentration relationship.

[0045] Furthermore, the analysis of the actual concentration of the gas to be analyzed in the analysis area based on real-time monitoring time, real-time time difference, real-time concentration, and concentration relationship includes the following sub-steps:

[0046] Mark the nth reference relation corresponding to the real-time gear as the target relation;

[0047] Multiply the real-time concentration by the target relationship to obtain the actual concentration of the gas to be analyzed in the region to be analyzed;

[0048] Calculate the real-time monitoring time minus the real-time time difference to obtain the actual monitoring time for the actual concentration;

[0049] All unconventional gases were analyzed to obtain their actual concentrations. The actual concentrations at the same monitoring time were then integrated into a single-moment concentration data set and presented to the laboratory administrator.

[0050] Secondly, this application provides a laboratory control and management system based on digital twins, including a gas monitoring module, a region division module, a concentration relationship testing module, and an actual concentration calculation module; the gas monitoring module, the region division module, and the actual concentration calculation module are respectively connected to the concentration relationship testing module for data transmission.

[0051] The gas monitoring module is used to install a comprehensive gas monitoring device at the ventilation duct of the laboratory to monitor the gas in the laboratory.

[0052] The area division module is used to build a digital twin model of the laboratory based on BIM model building technology. The administrator divides the digital twin model into gas generation areas and marks the gas produced in each gas generation area.

[0053] The concentration relationship testing module is used to analyze the detection points in the gas generation zone and test the concentration relationship of each gas generation zone through ventilation testing.

[0054] The actual concentration calculation module is used to analyze the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration.

[0055] The beneficial effects of this invention are as follows: This invention monitors the gas in the laboratory by installing a comprehensive gas monitoring device at the ventilation duct. Then, based on BIM model building technology, a digital twin model of the laboratory is built. The administrator divides the digital twin model into gas generation zones and marks the gas generated in each zone. Then, detection points are selected for the gas generation zones and test detection devices are set up. The advantage is that when selecting detection points, the direction and range of gas flow are determined based on the positional relationship between the gas generation zone and the exhaust vent. Then, the point that can come into contact with the most gas is selected as the detection point to provide test data that is closest to the actual concentration. The detection points are only used for ventilation testing, not for installing sensors in daily use. This improves the reliability and accuracy of data when monitoring the gas in the laboratory by laboratory control and management technology.

[0056] This invention conducts ventilation tests on gas generation zones, analyzes the concentration relationship equations based on the test results, and finally analyzes the actual gas concentration in each gas generation zone based on the concentration relationships and the monitored gas concentrations. The advantage lies in the fact that by installing a comprehensive gas monitoring device at the exhaust vent to monitor the emission sources in each gas generation zone, it reduces equipment costs and does not occupy laboratory space. Furthermore, solutions emitting the same gas are typically placed together in a laboratory, not haphazardly. Therefore, only the administrator needs to divide the digital twin model into zones, confirm the gas emitted by items placed in each gas generation zone, and then monitor the emissions through the comprehensive gas monitoring device at the exhaust vent. The invention analyzes the actual gas concentration within the gas generation zone, which is typically the maximum concentration of the gas in the laboratory. However, due to variations in ventilation system settings and distances between the gas generation zone and exhaust vents, different gases arrive at the integrated gas monitoring device at different times, resulting in a time skew. This invention eliminates this time skew when calculating the actual gas concentration in the gas generation zone, ensuring that the actual gas concentrations of different unconventional gases detected each time are data from the same moment. This provides a reliable data foundation for other analytical systems in the laboratory, improving the space utilization and accuracy of gas monitoring in laboratory control and management technologies. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the system of the present invention;

[0058] Figure 2 This is a schematic diagram of the gas generation zone of the present invention;

[0059] Figure 3 This is a schematic diagram of the exhaust point of the present invention;

[0060] Figure 4 This is a schematic diagram of the connecting line segments of the present invention;

[0061] Figure 5 This is a schematic diagram of the auxiliary ray of the present invention;

[0062] Figure 6 This is the first concentration relationship diagram of the present invention;

[0063] Figure 7 This is a flowchart of the steps of the method of the present invention. Detailed Implementation

[0064] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] Example 1, please refer to Figure 1 As shown, this application provides a laboratory control and management system based on digital twins, including a gas monitoring module, a region division module, a concentration relationship testing module, and an actual concentration calculation module; the gas monitoring module, region division module, and actual concentration calculation module are respectively connected to the concentration relationship testing module for data transmission.

[0066] The gas monitoring module is used to install a comprehensive gas monitoring device at the ventilation ducts of the laboratory to monitor the gas in the laboratory.

[0067] The gas monitoring module is configured with a gas monitoring strategy, which includes:

[0068] Install a comprehensive gas monitoring device at the exhaust vent of the laboratory's ventilation duct;

[0069] The integrated gas monitoring device can detect all unconventional gases;

[0070] Unconventional gases are gases emitted from chemical reagents stored in the laboratory or gases generated through chemical reactions;

[0071] In practical applications, chemical reagents refer to various solutions stored in the laboratory. The integrated gas monitoring device uses existing integrated gas monitoring sensors, capable of monitoring multiple types of gases. This embodiment is suitable for monitoring various unconventional gases in a laboratory when no one is using it, analyzing the actual concentration of each unconventional gas without occupying laboratory space. Furthermore, the monitoring equipment consists of only one integrated gas monitoring device and one testing device, reducing equipment costs. However, when someone is in the laboratory, if chemical reagents are used for experiments, the concentration of the corresponding unconventional gas will increase. Although not within the gas generation area, the detection results have a smaller deviation; the only difference is that the actual concentrations at the same time cannot be correlated. For example, if there are gases 1, 2, and 3, in an unoccupied environment, this embodiment can accurately detect their actual concentrations at the same time. If someone is in the laboratory and gas 1 is used, only the concentrations of gases 2 and 3 at the same time can be detected. The concentration of gas 1 has a small deviation from the actual concentration, but it is negligible. There is only a slight time difference between the actual concentrations of gas 2 and gas 3. For example, the actual concentrations of gas 2 and gas 3 are data from 2 seconds ago, while the actual concentration of gas 1 is data from 3 seconds ago. However, this problem of time difference in the monitored data can be overcome by dividing the experimental area into gas generation areas in this embodiment and testing the sensing time difference of different experimental areas. However, this embodiment will not be specifically described in this embodiment. This embodiment focuses on monitoring when the laboratory is not in use. If the user has a need, an additional experimental area can be added to detect the sensing time difference. Existing technologies for monitoring gas concentration in the laboratory usually use multiple sensors for distributed monitoring, which not only occupies laboratory space but also increases the cost of equipment and maintenance. If the gas concentration is monitored through a fixed point, it cannot be guaranteed that the monitored gas concentration is the maximum value in the laboratory, nor can it be guaranteed that different gas concentrations are data from the same moment.

[0072] The area division module is used to build a digital twin model of the laboratory based on BIM model building technology. The administrator can divide the digital twin model into gas generation areas and mark the gas produced in each gas generation area.

[0073] The region partitioning module is configured with region partitioning strategies, which include:

[0074] A digital twin model of the laboratory was built using BIM model building technology;

[0075] Please see Figure 2 As shown, the administrator divides the area in the top view of the digital twin model and names the divided area as the gas generation area;

[0076] Associate unconventional gases with gas generation regions, and name the unconventional gases corresponding to the gas generation regions as regionally generated gases.

[0077] In practical applications, when no one is using the laboratory, various chemical reagents are usually placed in a storage area, i.e., a fixed location. Chemical reagents that emit the same unconventional gas are usually the same reagent or have similar properties, and are generally placed in the same location within the laboratory. Therefore, by dividing the area in the top-down view of the digital twin model, the administrator can obtain the gas generation area, which is essentially the area where different chemical reagents are placed. Then, the administrator can input the various unconventional gases emitted by the chemical reagents placed in this area to associate the unconventional gas with the gas generation area. For example... Figure 2 The system is divided into three gas generation zones: A1, A2, and A3. Taking A1 as an example, the gases generated in A1 include a variety of unconventional gases such as ammonia, hydrogen cyanide, and phosphine.

[0078] The concentration relationship testing module is used to analyze the detection points in the gas generation zone and test the concentration relationship of each gas generation zone through ventilation testing; the concentration relationship testing module includes a detection point selection unit, a ventilation testing unit, and a concentration relationship analysis unit;

[0079] The detection point selection unit is used to select detection points for the gas generation area and set up testing and detection devices.

[0080] The detection point selection unit is configured with a detection point selection strategy, which includes:

[0081] Select any unconventional gas that does not exist in the laboratory as the test gas;

[0082] Please see Figure 3 As shown, mark the location of the exhaust vent in the top view of the digital twin model, and mark it as the exhaust point;

[0083] Each different gas generation zone is set up individually. For any gas generation zone, the outline of the gas generation zone is obtained and marked as the region outline.

[0084] In practical applications, any unconventional gas not present in the laboratory is selected as the test gas. An unconventional gas is one that is not present in the air; that is, it is a non-conventional gas whose initial reading on the integrated gas monitoring device is 0. The test gas is selected according to the specific laboratory conditions; this embodiment does not provide a specific example, and the term "test gas" is used in this example only. Figure 3 The location of the exhaust point is shown in the figure. The exhaust vent is usually rectangular or circular, and the exhaust point is the geometric center of the rectangle or circle. When analyzing the A1 area, the outline of the A1 area is the region outline.

[0085] Please see Figure 4 As shown, each endpoint on the area outline is marked as an area boundary point. Each area boundary point is connected to the exhaust point. The connected line segments are named connecting line segments. The two outermost connecting line segments are retained, that is, the two connecting line segments with the largest included angle. The remaining connecting line segments are deleted. The retained connecting line segments are named wind direction line segments.

[0086] Please see Figure 5 As shown, the angle between the two wind direction line segments is named the line segment angle. An auxiliary ray is drawn with the exhaust point as the endpoint, such that the auxiliary ray bisects the line segment angle.

[0087] Find the intersection of the region outline and the auxiliary ray, name it the undetermined intersection point, and select the undetermined intersection point closest to the exhaust point as the detection point;

[0088] A testing and detection device for detecting the test gas is installed at the detection point;

[0089] In practical applications, the boundary points of the area are connected to the exhaust points, such as... Figure 4 As shown, for ease of observation, Figure 4 The walls of the laboratory in the top view have been removed. Figure 4 The line segments in the diagram are the connecting line segments. The angle between the uppermost and lowermost connecting line segments is the largest, so they are retained. The remaining connecting line segments are removed to obtain the wind direction line segments. These wind direction line segments reveal the flow area of ​​unconventional gases in region A1. When unconventional gases in region A1 drift towards the exhaust vent, they are usually within the wind direction line segments. The auxiliary rays and undetermined intersection points are then drawn as follows: Figure 5 As shown, the undetermined intersection point on the left is closest to the exhaust point, so it is used as the test point, and a test device is installed at the test point.

[0090] The ventilation test unit is used to test the ventilation of the gas generation area;

[0091] The ventilation test unit is equipped with a ventilation test strategy, which includes:

[0092] When conducting ventilation tests on any gas generation area, the corresponding gas generation area is marked as the target analysis area;

[0093] Name the ventilation system's setting as the ventilation setting, set the ventilation setting to the lowest level, and discharge the test gas into the target analysis area. When the test detection device detects the test gas, record a time point and mark it as the area perception moment, represented by the symbol TA. When the integrated gas monitoring device detects the test gas, record a time point and mark it as the integrated perception moment, represented by the symbol TB.

[0094] Calculate TB-TA to obtain the sensing time difference, denoted by the symbol TC. Record the concentration of the test gas recorded by the test detection device in real time, and mark it as the test detection concentration. At the same time, record the time node corresponding to the comprehensive detection concentration, and mark it as the test detection time, denoted by the symbol T1. Record the concentration of the test gas detected by the comprehensive gas monitoring device in real time, and mark it as the comprehensive detection concentration. At the same time, record the time node corresponding to the comprehensive detection concentration, and mark it as the comprehensive detection time, denoted by the symbol T2.

[0095] Calculate T2-T1 to obtain the corrected detection time, denoted by the symbol T3. Combine the test detection concentration and the comprehensive detection concentration where T3 is equal to T1 into a single concentration data point. The concentration data also includes the ventilation level.

[0096] In practical applications, taking area A1 as an example, area A1 is marked as the target analysis area. The laboratory ventilation system in this embodiment has four levels: level one, level two, level three, and level four. Adjusting the ventilation level to level one and releasing the test gas into the target analysis area only requires opening the cap of the corresponding chemical reagent bottle. When the testing device detects the test gas, the area sensing time TA is recorded as 13:26:38, at which point the test concentration is 0.328%. When the integrated gas monitoring device detects the test gas, the integrated sensing time TB is recorded as 13:26:42. The calculated sensing time difference TC is 4 seconds, meaning the integrated gas... The gas concentration detected by the gas detection device when the ventilation system is at level 1 is the data from zone A1 2 seconds ago; the test detection concentration and test detection time T1 are recorded in real time, which are 0.364% and 13:26:42 respectively; the comprehensive detection concentration and comprehensive detection time T2 are recorded in real time, which are 0.268% and 13:26:42 respectively; T3 = T2 - TC = 13:26:38, that is, 0.268% corresponds to the test detection concentration of 0.328% detected at 13:26:38. Thus, a concentration data is obtained, including the test detection concentration of 0.328%, the comprehensive detection concentration of 0.268%, and the ventilation level is level 1.

[0097] Stop emitting test gas. When both the test concentration and the overall concentration return to zero, increase the ventilation level by one and re-analyze. Record the TC corresponding to each ventilation level. Combine the ventilation level and the corresponding TC into the level efficiency data. Repeat this process until the highest ventilation level is reached.

[0098] In practical applications, the emission of test gas is stopped, and when both the test concentration and the comprehensive concentration return to zero, the ventilation level is increased by one, and the analysis is repeated. This is because the gas flow speed in the laboratory varies depending on the ventilation level, which leads to changes in the sensing time difference. Therefore, when testing the sensing time difference at different levels in area A1, referring to the above process, we can obtain a level efficiency data point: when the ventilation level is one, the sensing time difference TC is 4s. Similarly, the analysis shows that when the ventilation levels are two, three, and four, the sensing time differences TC are 3.2s, 2.2s, and 1s, respectively.

[0099] The concentration relationship analysis unit is used to analyze the concentration relationship equation of the gas generation zone based on the results of ventilation tests.

[0100] The concentration relationship analysis unit is equipped with a concentration relationship analysis strategy, which includes:

[0101] The ventilation levels are labeled W in ascending order of their intensity. n , where n is a positive integer and n is the index of W;

[0102] Get W n Concentration data for W n The concentrations detected in the concentration data are numbered using the symbol P. nm This indicates that the overall detected concentrations in the concentration data are numbered using the symbol G. nm This represents the expression, where m is a positive integer and nm is the index of P and G, and P... nm This indicates that the ventilation setting is W. n At that time, the concentration G obtained from the m-th test through ventilation testing nm This indicates that the ventilation setting is W. n At that time, the m-th comprehensive detection concentration obtained through ventilation testing;

[0103] Please see Figure 6 As shown, with G nm P is the X-axis. nm Establish a Cartesian coordinate system for the Y-axis, named the nth concentration relationship graph, and set P... nm According to G nm Enter the concentration relationship graph for the nth time, for each W n There is a corresponding concentration relationship graph for the nth concentration.

[0104] Perform linear regression analysis on the nth concentration relationship graph, and name the straight line obtained from the linear regression analysis the nth concentration relationship line;

[0105] Find the midpoint of the nth concentration relationship line and mark it as the midpoint of the nth concentration relationship. Then, mark the G value of the midpoint of the nth concentration relationship. nm and P nmLabeled as H1 n and H2 n ;

[0106] Calculate H2 n / H1 n The calculation results are marked as the nth reference relation, each W n There is an nth reference relation;

[0107] In practical applications, W1 to W4 are numbered to represent the first, second, third, and fourth gear levels, respectively. Taking W1 as an example, the concentration data is obtained, and the test concentration P is obtained through the numbering. 1m Where 1≤m≤300, it means that 300 concentration data points were obtained in W1, and P 1m The comprehensive detection concentration is G. nm The first concentration relationship graph was constructed as follows: Figure 6 As shown, the dashed line represents the concentration relationship. Because the ventilation system's settings are fixed, the gas flow rate in each area of ​​the laboratory is also fixed, and the proportion of unconventional gases carried away remains within a certain range; that is, the ventilation efficiency remains constant. G nm and P nm There is a certain proportional relationship between them, which conforms to the linear regression distribution law. The nth reference relationship is at the ventilation level W. n At that time, H1 was detected by the integrated gas monitoring device. n In H2 n The reciprocal of the proportion in, Figure 6 For example, obtain H1 n and H2 n The values ​​are 0.785% and 0.961% respectively. The first reference relationship is calculated to be 1.2242, and the result is rounded to four decimal places.

[0108] The actual concentration calculation module is used to analyze the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration; the actual concentration calculation module includes a data integration unit and a concentration analysis unit;

[0109] The data integration unit is configured with a data integration strategy, which includes:

[0110] Obtain the current ventilation level of the ventilation system and mark it as the real-time level;

[0111] The concentration of unconventional gases monitored in the integrated gas monitoring device is obtained and marked as the real-time concentration. At the same time, the time when the real-time concentration is detected is recorded and marked as the real-time monitoring time.

[0112] When analyzing the real-time concentration of any unconventional gas, the corresponding unconventional gas and real-time concentration are marked as the gas to be analyzed and the concentration to be analyzed, respectively. The gas generation region corresponding to the concentration to be analyzed is found and marked as the region to be analyzed.

[0113] Find the TC (Traction Time) in the gear efficiency data of the area to be analyzed when the ventilation gear level is equal to the real-time gear level, and mark it as the real-time time difference;

[0114] In practical applications, for example, if the current real-time setting in the laboratory is set to level 1, and the real-time concentrations of gas 1, gas 2, gas 3, and gas 4 are 0.692%, 0.422%, 1.245%, and 0.528% respectively at the real-time monitoring time of 14:26:12, and gas 1, gas 2, and gas 3 are all in zone A1, while gas 4 is in zone A2, the real-time time difference for zone A1 is 4 seconds, and the real-time time difference for zone A2 is 5 seconds.

[0115] The concentration analysis unit is used to analyze the actual concentration of the gas to be analyzed in the analysis area based on real-time monitoring time, real-time time difference, real-time concentration, and concentration relationship.

[0116] The concentration analysis unit is equipped with a concentration analysis strategy, which includes:

[0117] Mark the nth reference relation corresponding to the real-time gear as the target relation;

[0118] Multiply the real-time concentration by the target relationship to obtain the actual concentration of the gas to be analyzed in the region to be analyzed;

[0119] Calculate the real-time monitoring time minus the real-time time difference to obtain the actual monitoring time for the actual concentration;

[0120] All unconventional gases were analyzed to obtain their actual concentrations. The actual concentrations at the same monitoring time were then integrated into a single-moment concentration data set and presented to the laboratory administrator.

[0121] In practical applications, the target relationships for zones A1 and A2 are 1.2242 and 1.2584, respectively. Multiplying the real-time concentrations of gases 1, 2, and 3 by 1.2242 and the real-time concentration of gas 4 by 1.2584, we obtain the actual concentrations of gases 1, 2, and 3 in zone A1 as 0.847%, 0.517%, and 1.524%, respectively, while the actual concentration of gas 4 in zone A2 is 0.664%. Furthermore, the actual monitoring time for gases 1, 2, and 3 is 14:26:12 - 4s = 14:26:08, while the actual monitoring time for gas 4 is 14:26:12 - 5s = 14:26:0.7. This indicates a comprehensive gas concentration distribution. The gas monitoring device detected the actual concentrations of gas 1, gas 2, and gas 3 at 14:26:12 as data from 14:26:08, while the actual concentration of gas 4 was data from 14:26:07. The device also detected the actual concentrations of gas 1, gas 2, and gas 3 at 14:26:07 one second earlier. Displaying the actual concentrations of gas 1, gas 2, gas 3, and gas 4 detected at 14:26:07 simultaneously ensures that the detected gas concentrations are data from the same moment, allowing other modules in the management system to perform safety analysis. This slight delay will not cause safety issues during gas emission.

[0122] Example 2, please refer to Figure 7 As shown, this application provides a laboratory control and management method based on digital twins, including the following steps:

[0123] Step S1 involves installing a comprehensive gas monitoring device at the laboratory's ventilation ducts to monitor the gases within the laboratory. Step S1 includes the following sub-steps:

[0124] Step S101: Install a comprehensive gas monitoring device at the exhaust vent of the laboratory's ventilation duct;

[0125] Step S102: The integrated gas monitoring device is capable of detecting all unconventional gases;

[0126] Step S103: Unconventional gases are gases emitted from chemical reagents stored in the laboratory or gases generated through chemical reactions.

[0127] Step S2 involves constructing a digital twin model of the laboratory based on BIM model building technology. The administrator divides the digital twin model into gas generation zones and marks the gases produced in each zone. Step S2 includes the following sub-steps:

[0128] Step S201: Construct a digital twin model of the laboratory based on BIM model building technology;

[0129] Step S202: The administrator divides the area in the top view of the digital twin model and names the divided area as the gas generation area;

[0130] Step S203: Associate unconventional gases with gas generation zones, and name the unconventional gases corresponding to the gas generation zones as regional generated gases;

[0131] Step S3 involves analyzing the detection points in the gas generation zone and testing the concentration relationship of each gas generation zone through ventilation testing. Step S3 includes the following sub-steps:

[0132] Step S301: Select detection points for the gas generation zone and set up a testing and detection device;

[0133] Step S301 includes the following sub-steps:

[0134] Step S3011: Select any unconventional gas that does not exist in the laboratory as the test gas;

[0135] Step S3012: Mark the location of the exhaust vent in the top view of the digital twin model, and mark it as the exhaust point;

[0136] Step S3013: Set up each different gas generation area separately. For any gas generation area, obtain the outline of the gas generation area and mark it as the area outline.

[0137] Step S3014: Mark each endpoint on the area outline as an area boundary point, connect each area boundary point to the exhaust point, name the connected line segment as a connecting line segment, retain the two outermost connecting line segments, that is, the angle between the two connecting line segments is the largest, delete the remaining connecting line segments, and name the retained connecting line segments as wind direction line segments.

[0138] Step S3015: Name the angle between the two wind direction line segments as the line segment angle, and draw an auxiliary ray with the exhaust point as the endpoint, such that the auxiliary ray bisects the line segment angle.

[0139] Step S3016: Locate the intersection of the region contour and the auxiliary ray, name it as the undetermined intersection point, and select the undetermined intersection point closest to the exhaust point as the detection point;

[0140] Step S3017: Set up a testing and detection device for detecting the test gas at the detection point;

[0141] Step S302: Perform a ventilation test on the gas generation area;

[0142] Step S302 includes the following sub-steps:

[0143] Step S3021: When performing a ventilation test on any gas generation area, mark the corresponding gas generation area as the target analysis area;

[0144] Step S3022: Name the ventilation system's setting as the ventilation setting, adjust the ventilation setting to the lowest level, and discharge the test gas into the target analysis area. When the test detection device detects the test gas, record a time node and mark it as the area perception moment, represented by the symbol TA. When the integrated gas monitoring device detects the test gas, record a time node and mark it as the integrated perception moment, represented by the symbol TB.

[0145] Step S3023: Calculate TB-TA to obtain the sensing time difference, denoted by the symbol TC. Record the concentration of the test gas recorded by the test detection device in real time, and mark it as the test detection concentration. At the same time, record the time node corresponding to the comprehensive detection concentration, and mark it as the test detection time, denoted by the symbol T1. Record the concentration of the test gas detected by the comprehensive gas monitoring device in real time, and mark it as the comprehensive detection concentration. At the same time, record the time node corresponding to the comprehensive detection concentration, and mark it as the comprehensive detection time, denoted by the symbol T2.

[0146] Step S3024: Calculate T2-T1 to obtain the corrected detection time, represented by the symbol T3. Integrate the test detection concentration and the comprehensive detection concentration that are equal to T1 in T3 into the same concentration data. The concentration data also includes the ventilation level.

[0147] Step S3025: Stop emitting test gas. When both the test concentration and the comprehensive concentration return to zero, increment the ventilation level by one and re-analyze. Record the TC corresponding to each ventilation level. Integrate the ventilation level and the corresponding TC into the level efficiency data. Repeat this process until the highest ventilation level is reached.

[0148] Step S303: Analyze the concentration relationship equation of the gas generation zone based on the results of the ventilation test;

[0149] Step S303 includes the following sub-steps:

[0150] Step S3031: Mark the ventilation levels as W in ascending order of ventilation level. n , where n is a positive integer and n is the index of W;

[0151] Step S3032, obtain W n Concentration data for W n The concentrations detected in the concentration data are numbered using the symbol P. nm This indicates that the overall detected concentrations in the concentration data are numbered using the symbol G. nm This represents the expression, where m is a positive integer and nm is the index of P and G, and P...nm This indicates that the ventilation setting is W. n At that time, the concentration G obtained from the m-th test through ventilation testing nm This indicates that the ventilation setting is W. n At that time, the m-th comprehensive detection concentration obtained through ventilation testing;

[0152] Step S3033, with G nm P is the X-axis. nm Establish a Cartesian coordinate system for the Y-axis, named the nth concentration relationship graph, and set P... nm According to G nm Enter the concentration relationship graph for the nth time, for each W n There is a corresponding concentration relationship graph for the nth concentration.

[0153] Step S3034: Perform linear regression analysis on the nth concentration relationship graph, and name the straight line obtained from the linear regression analysis the nth concentration relationship line;

[0154] Step S3035: Obtain the midpoint of the nth concentration relationship line, mark it as the midpoint of the nth concentration relationship, and set G of the midpoint of the nth concentration relationship... nm and P nm Labeled as H1 n and H2 n ;

[0155] Step S3036, calculate H2 n / H1 n The calculation results are marked as the nth reference relation, each W n There is an nth reference relation;

[0156] Step S4 involves analyzing the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration. Step S4 includes the following sub-steps:

[0157] Step S401: Obtain the current ventilation level of the ventilation system and mark it as the real-time level;

[0158] Step S402: Obtain the concentration of the unconventional gas monitored in the integrated gas monitoring device, mark it as the real-time concentration, and record the time when the real-time concentration was detected, mark it as the real-time monitoring time.

[0159] Step S403: When analyzing the real-time concentration of any unconventional gas, the corresponding unconventional gas and real-time concentration are marked as the gas to be analyzed and the concentration to be analyzed, respectively. The gas generation region corresponding to the concentration to be analyzed is found and marked as the region to be analyzed.

[0160] Step S404: Locate the TC when the ventilation level is equal to the real-time level in the efficiency data of the area to be analyzed, and mark it as the real-time time difference;

[0161] Step S405: Analyze the actual concentration of the gas to be analyzed in the analysis area based on real-time monitoring time, real-time time difference, real-time concentration, and concentration relationship.

[0162] Step S405 includes the following sub-steps:

[0163] Step S4051: Mark the nth reference relationship corresponding to the real-time gear position as the target relationship;

[0164] Step S4052: Multiply the real-time concentration by the target relationship to obtain the actual concentration of the gas to be analyzed in the analysis area;

[0165] Step S4053: Calculate the real-time monitoring time minus the real-time time difference to obtain the actual monitoring time of the actual concentration;

[0166] Step S4054: Analyze all unconventional gases to obtain their actual concentrations. Combine the actual concentrations at the same monitoring time into a single-moment concentration data and present it to the laboratory administrator.

[0167] Example 3: This application provides an electronic device that may include a processor, a communication interface, a memory, and a communication bus. The processor, communication interface, and memory communicate with each other via the communication bus. The memory stores computer-readable instructions, and the processor can call these instructions. When the processor executes a computer-readable instruction, it performs steps similar to those in a digital twin-based laboratory control and management method to achieve the following functions: monitoring gases within the laboratory; constructing a digital twin model of the laboratory based on BIM model building technology, and dividing the digital twin model into gas generation zones by an administrator; analyzing the detection points in the gas generation zones and testing the concentration relationships in each gas generation zone through ventilation tests; and analyzing the actual gas concentration in each gas generation zone based on the concentration relationships and the monitored gas concentrations.

[0168] Furthermore, when the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0169] Example 4: This application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it performs the steps of the above-described laboratory control and management method based on digital twins to achieve the following functions: monitoring gases in the laboratory; constructing a digital twin model of the laboratory based on BIM model building technology, and dividing the digital twin model into gas generation zones by an administrator; analyzing the detection points in the gas generation zones and testing the concentration relationship of each gas generation zone through ventilation tests; and analyzing the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration.

[0170] Based on the above description of the embodiments, the embodiments of the present invention can be provided as methods, systems, or computer program products. Based on this understanding, the above technical solutions, in essence or in terms of their contribution to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or certain parts of the embodiments.

[0171] In the embodiments provided in this application, it should be understood that the disclosed system or method can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and there may be other division methods in actual implementation. Furthermore, multiple modules or units may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces. The indirect coupling or communication connection between systems, modules, and units may be electrical, mechanical, or other forms.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A laboratory control and management method based on digital twins, characterized in that, Includes the following steps: Install a comprehensive gas monitoring device at the ventilation ducts in the laboratory to monitor the gas inside the laboratory; Based on BIM model building technology, a digital twin model of the laboratory is built. The administrator divides the digital twin model into gas generation zones and marks the gas produced in each gas generation zone. The detection points in the gas generation zone were analyzed, and the concentration relationship in each gas generation zone was tested through ventilation tests. The actual gas concentration in each gas generation zone is analyzed based on the concentration relationship and the monitored gas concentration. Analyzing the detection points in the gas generation zone and testing the concentration relationship in each gas generation zone through ventilation tests includes the following sub-steps: Select detection points and set up testing devices for the gas generation zone; Ventilation tests were conducted in the gas generation area; Analysis of the concentration relationship equation in the gas generation zone based on the results of ventilation tests; Setting up an exhaust gas test experimental group and installing test and detection devices in the gas generation area includes the following sub-steps: Select any unconventional gas that does not exist in the laboratory as the test gas; Mark the location of the exhaust vents in the top view of the digital twin model, and label them as exhaust points; Each different gas generation zone is set up individually. For any gas generation zone, the outline of the gas generation zone is obtained and marked as the region outline. Mark each endpoint on the area outline as an area boundary point, connect each area boundary point to the exhaust point, name the connecting line segment as a connecting line segment, retain the two outermost connecting line segments (i.e., the two connecting line segments with the largest included angle), delete the remaining connecting line segments, and name the retained connecting line segments as wind direction line segments. Name the angle between the two wind direction line segments as the line segment angle, and draw an auxiliary ray with the exhaust point as the endpoint, such that the auxiliary ray bisects the line segment angle. Find the intersection of the region outline and the auxiliary ray, name it the undetermined intersection point, and select the undetermined intersection point closest to the exhaust point as the detection point; A testing and detection device for detecting the test gas is installed at the detection point; Ventilation testing of the gas-generating area includes the following sub-steps: The ventilation system was tested by emitting test gases at different ventilation levels. The analysis of the concentration relationship equation in the gas generation zone based on the results of ventilation tests includes the following sub-steps: The ventilation levels are labeled W in ascending order of their intensity. n , where n is a positive integer and n is the index of W; Get W n Concentration data for W n The concentrations detected in the concentration data are numbered using the symbol P. nm This indicates that the overall detected concentrations in the concentration data are numbered using the symbol G. nm This represents the expression, where m is a positive integer and nm is the index of P and G, and P... nm This indicates that the ventilation setting is W. n At that time, the concentration G obtained from the m-th test through ventilation testing nm This indicates that the ventilation setting is W. n At that time, the m-th comprehensive detection concentration obtained through ventilation testing; With G nm P is the X-axis. nm Establish a Cartesian coordinate system for the Y-axis, named the nth concentration relationship graph, and set P... nm According to G nm Enter the concentration relationship graph for the nth time, for each W n There is a corresponding concentration relationship graph for the nth concentration. Perform linear regression analysis on the nth concentration relationship graph, and name the straight line obtained from the linear regression analysis the nth concentration relationship line; Find the midpoint of the nth concentration relationship line and mark it as the midpoint of the nth concentration relationship. Then, mark the G value of the midpoint of the nth concentration relationship. nm and P nm Labeled as H1 n and H2 n ; Calculate H2 n / H1 n The calculation results are marked as the nth reference relation, each W n There is a corresponding nth reference relation.

2. The laboratory control and management method based on digital twins according to claim 1, characterized in that, Installing a comprehensive gas monitoring device at the laboratory's ventilation ducts to monitor the gases within the laboratory includes the following sub-steps: Install a comprehensive gas monitoring device at the exhaust vent of the laboratory's ventilation duct; The integrated gas monitoring device is capable of detecting all unconventional gases; The unconventional gas is a gas emitted from chemical reagents stored in the laboratory or a gas generated through a chemical reaction.

3. The laboratory control and management method based on digital twins according to claim 2, characterized in that, Using BIM model building technology, a digital twin model of the laboratory is constructed. The administrator divides the digital twin model into gas generation zones and marks the gases produced in each zone, including the following sub-steps: A digital twin model of the laboratory was built using BIM model building technology; The administrator divides the area in the top view of the digital twin model and names the divided area as the gas generation zone; Unconventional gases are associated with gas generation regions, and the unconventional gases corresponding to the gas generation regions are named regionally generated gases.

4. The laboratory control and management method based on digital twins according to claim 3, characterized in that, The analysis of the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration includes the following sub-steps: Obtain the current ventilation level of the ventilation system and mark it as the real-time level; The concentration of unconventional gases monitored in the integrated gas monitoring device is obtained and marked as the real-time concentration. At the same time, the time when the real-time concentration is detected is recorded and marked as the real-time monitoring time. When analyzing the real-time concentration of any unconventional gas, the corresponding unconventional gas and real-time concentration are marked as the gas to be analyzed and the concentration to be analyzed, respectively. The gas generation region corresponding to the concentration to be analyzed is found and marked as the region to be analyzed. Find the TC (Traction Time) in the gear efficiency data of the area to be analyzed when the ventilation gear level is equal to the real-time gear level, and mark it as the real-time time difference; The actual concentration of the gas to be analyzed in the analysis area is analyzed based on real-time monitoring time, real-time time difference, real-time concentration, and concentration relationship.

5. The laboratory control and management method based on digital twins according to claim 4, characterized in that, The analysis of the actual concentration of the gas to be analyzed in the analysis area based on real-time monitoring time, real-time time difference, real-time concentration, and concentration relationship includes the following sub-steps: Mark the nth reference relation corresponding to the real-time gear as the target relation; Multiply the real-time concentration by the target relationship to obtain the actual concentration of the gas to be analyzed in the region to be analyzed; Calculate the real-time monitoring time minus the real-time time difference to obtain the actual monitoring time for the actual concentration; All unconventional gases were analyzed to obtain their actual concentrations. The actual concentrations at the same monitoring time were then integrated into a single-moment concentration data set and presented to the laboratory administrator.

6. A laboratory control and management system based on digital twins, used to implement the laboratory control and management method based on digital twins as described in any one of claims 1-5, characterized in that, It includes a gas monitoring module, a region division module, a concentration relationship testing module, and an actual concentration calculation module; the gas monitoring module, region division module, and actual concentration calculation module are respectively connected to the concentration relationship testing module for data transmission. The gas monitoring module is used to install a comprehensive gas monitoring device at the ventilation duct of the laboratory to monitor the gas in the laboratory. The area division module is used to build a digital twin model of the laboratory based on BIM model building technology. The administrator divides the digital twin model into gas generation areas and marks the gas produced in each gas generation area. The concentration relationship testing module is used to analyze the detection points in the gas generation zone and test the concentration relationship of each gas generation zone through ventilation testing. The actual concentration calculation module is used to analyze the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration.

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