Laboratory control management method and system based on digital twinning

Abstract

The invention discloses a laboratory control management method and system based on digital twinning, and relates to the technical field of laboratory control management, and the method comprises the following steps: monitoring gas in a laboratory; the method comprises the following steps: constructing a digital twin model for a laboratory based on a BIM model construction technology, and dividing a gas generation area in the digital twin model through an administrator; analyzing the detection points of the gas generation areas and testing the concentration relation of each gas generation area through ventilation testing; analyzing the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration; the invention is used for solving the problems that the equipment cost is increased and the real concentration of the gas in the laboratory is inaccurately monitored due to the fact that the sensor is unreasonably arranged and the gas concentration of the emission source cannot be effectively monitored when the gas in the laboratory is monitored by the existing laboratory control management technology.

Description

Technical Field

[0001] The present invention relates to the technical field of laboratory control management, and specifically to a laboratory control management method and system based on digital twins. Background Art

[0002] Laboratory control and management technology refers to a technical system that systematically monitors, regulates and optimizes laboratory equipment, environment, processes, data, safety and other factors through integrated automation, informationization and intelligent means.

[0003] When monitoring gases in a laboratory, existing laboratory control and management technologies usually set up multiple sensors in the laboratory for gas monitoring, but this will take up space in the laboratory and increase the cost of equipment. On the other hand, there are a few that use one sensor to monitor gases in the laboratory using an optimal detection point. This method cannot obtain the gas concentration of the emission source, and the gas concentration of the emission source is usually the largest, so it is impossible to accurately obtain the highest concentration of different gases in the laboratory. For example, in the patent application with publication number CN118822268A, a "laboratory control and management system based on digital twins" is disclosed. This solution is to install corresponding sensors in each functional area of ​​the laboratory, and monitor the gas and temperature and humidity parameters in the laboratory by setting up multiple sensors. This not only increases the equipment cost, but also takes up space in the laboratory. When monitoring gases in the laboratory, existing laboratory control and management technologies also have problems such as unreasonable sensor settings and inability to effectively monitor the gas concentration of the emission source, resulting in increased equipment costs and inaccurate monitoring of the actual concentration of gases in the laboratory. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the prior art to at least a certain extent, by installing a comprehensive gas monitoring device at the ventilation duct of the laboratory to monitor the gas in the laboratory, and then building a digital twin model for the laboratory based on the BIM model construction technology. The administrator divides the digital twin model into gas generation areas and marks the gas generated by each gas generation area. Then, the detection points are selected for the gas generation area and the test detection device is set up. Then, a ventilation test is performed on the gas generation area. The concentration relationship equation of the gas generation area is analyzed based on the results of the ventilation test. Finally, the actual gas concentration in each gas generation area is analyzed based on the concentration relationship and the concentration of the monitored gas, so as to solve the problem that the existing laboratory control management technology has unreasonable sensor settings and cannot effectively monitor the gas concentration of the emission source when monitoring the gas in the laboratory, resulting in increased equipment costs and inaccurate monitoring of the actual concentration of the gas in the laboratory.

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

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

[0007] A digital twin model of the laboratory was constructed based on BIM model construction technology. The administrator divided the digital twin model into gas generation zones and marked the gases produced in each zone.

[0008] Analyze the detection points in the gas generation area and test the concentration relationship of each gas generation area through ventilation testing;

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

[0010] Furthermore, a comprehensive gas monitoring device is installed in the ventilation duct of the laboratory to monitor the gas in the laboratory, which includes the following sub-steps:

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

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

[0013] The unconventional gas is gas emitted by chemical reagents stored in the laboratory or gas generated by chemical reactions.

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

[0015] Build a digital twin model for the laboratory based on BIM model construction 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 area;

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

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

[0019] Select detection points for the gas generation area and set up test detection equipment;

[0020] Conduct ventilation tests on gas generating areas;

[0021] The concentration relationship equation of the gas generation area is analyzed based on the results of the ventilation test.

[0022] Furthermore, setting up an exhaust test experimental group for the gas generation area and installing a test detection device 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 vent in the top view of the digital twin model and mark it as the exhaust point;

[0025] Set up each different gas generation area separately, and for any gas generation area, obtain the outline of the gas generation area and mark it as the area 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 connected line segment as a connecting line segment, retain the two outermost connecting line segments, that is, the two connecting line segments with the largest angle between them, delete the remaining connecting line segments, and name the retained connecting line segments as wind direction segments;

[0027] The angle between the two wind direction line segments is named the segment angle, and an auxiliary ray is drawn with the exhaust point as the endpoint so that the auxiliary ray bisects the segment angle.

[0028] Find the intersection point between the area outline and the auxiliary ray, name it the pending intersection point, and select the pending intersection point closest to the exhaust point as the detection point;

[0029] A test detection device for detecting the test gas is provided at the detection point.

[0030] Furthermore, performing ventilation testing on the gas generation area includes the following sub-steps:

[0031] The ventilation system is tested by discharging test gas at different ventilation levels.

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

[0033] The ventilation gears are marked as W in the order from small to large. n , where n is a positive integer and n is the sequence number of W;

[0034] Get W n Concentration data for W n The concentration data of the test detection concentrations are numbered by the symbol P nm Indicates that the comprehensive detection concentration in the concentration data is numbered, and the symbol G nmIndicates, where m is a positive integer and nm is the serial number of P and G, P nm Indicates that the ventilation position is W n When the mth test detection concentration is obtained through ventilation test, G nm Indicates that the ventilation position is W n When , the mth comprehensive detection concentration obtained by ventilation test;

[0035] G nm is the X axis, P nm Establish a plane rectangular coordinate system for the Y axis, named the nth concentration relationship diagram, and set P nm According to G nm Enter the nth concentration relationship diagram, each W n There is a corresponding n-th concentration relationship graph;

[0036] Performing linear regression analysis on the nth concentration relationship graph, and naming the straight line obtained by the linear regression analysis as the nth concentration relationship straight line;

[0037] Get the midpoint of the nth concentration relationship line, mark it as the nth concentration relationship midpoint, and change the G of the nth concentration relationship midpoint to nm and P nm Marked as H1 n and H2 n ;

[0038] Calculate H2 n / H1 n , mark the calculation result as the nth reference relationship, each W n There is an nth reference relationship corresponding to this.

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

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

[0041] Obtain the concentration of the unconventional gas monitored by the integrated gas monitoring device, mark it as the real-time concentration, and record the time when the real-time concentration is detected, mark it 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, and the gas generation area corresponding to the concentration to be analyzed is found and marked as the area to be analyzed;

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

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

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

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

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

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

[0049] All unconventional gases are analyzed to obtain their actual concentrations. The actual concentrations at the same monitoring time are integrated into simultaneous concentration data for display to the laboratory administrator.

[0050] In a second aspect, the present application provides a laboratory control and management system based on digital twins, including a gas monitoring module, a region division module, a concentration relationship test 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 test module data;

[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 for the laboratory based on BIM model construction technology, and the administrator divides the digital twin model into gas generation areas and marks the gas generated by each gas generation area;

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

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

[0055] Beneficial effects of the present invention: The present invention monitors the gas in the laboratory by installing a comprehensive gas monitoring device at the ventilation duct of the laboratory, and then builds a digital twin model for the laboratory based on the BIM model construction technology. The administrator divides the digital twin model into gas generation areas and marks the gas generated by each gas generation area. Then, detection points are selected for the gas generation areas and test detection devices are set up. The advantage is that when selecting the detection points, the flow direction and range of the gas are judged according to the positional relationship between the gas generation area and the exhaust port, and then the point that can be exposed to the most gas is found as the detection point to provide test data closest to the actual concentration as support. The detection points are only used for ventilation tests, rather than detection points where sensors are installed in daily use, which improves the data reliability and accuracy of laboratory control management technology when monitoring the gas in the laboratory;

[0056] The present invention performs ventilation tests on the gas generation area, analyzes the concentration relationship equation of the gas generation area based on the results of the ventilation test, and finally analyzes the actual gas concentration in each gas generation area based on the concentration relationship and the concentration of the monitored gas. The advantage is that by installing a comprehensive gas monitoring device at the exhaust port, the emission source of each gas generation area is monitored, which not only reduces the cost of equipment but also does not occupy laboratory space. In addition, under normal circumstances, solutions that emit the same gas in the laboratory will be placed together rather than anywhere else. Therefore, it is only necessary for the administrator to divide the digital twin model into areas, confirm the gas emitted by the objects placed in each gas generation area, and then monitor it through the comprehensive gas monitoring device at the exhaust port. And analyze the actual gas concentration in the gas generation area, and the actual gas concentration in the gas generation area is usually the maximum concentration of the gas in the laboratory. At the same time, due to the different gears of the ventilation system and the different distances between the gas generation area and the exhaust port, the time for different gases to reach the comprehensive gas monitoring device is also different, and there will be a certain time deviation. The present invention eliminates the time deviation when reversely inferring the actual gas concentration in the gas generation area, ensuring that the actual gas concentrations of different unconventional gases monitored each time are data at the same time, providing a reliable data basis for other analysis systems in the laboratory, and improving the space utilization rate and gas monitoring accuracy of laboratory control management technology when monitoring gases in the laboratory. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 is a functional block diagram of the system of the present invention;

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

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

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

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

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

[0063] Figure 7 Flow chart of the steps of the method of the present invention. DETAILED DESCRIPTION

[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0065] Example 1, please refer to Figure 1 As shown, the present application provides a laboratory control and management system based on digital twins, including a gas monitoring module, a region division module, a concentration relationship test 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 test module data;

[0066] The gas monitoring module is used to install a comprehensive gas monitoring device in the ventilation duct 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 outlet of the laboratory ventilation duct;

[0069] Comprehensive gas monitoring equipment can detect all unconventional gases;

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

[0071] In practical applications, chemical reagents are various solutions stored in the laboratory. The comprehensive gas monitoring device adopts the existing comprehensive gas monitoring sensor, which can monitor various types of gases. This embodiment is suitable for monitoring various unconventional gases in the laboratory when no one is using it, analyzing the actual concentration of each unconventional gas in the laboratory, and does not occupy the laboratory space. At the same time, the monitoring equipment has only one comprehensive gas monitoring device and one test detection device, which reduces the cost of the equipment. When there are people in the laboratory, if chemical reagents are taken for experiments, the concentration of the corresponding unconventional gas will increase. Although it is not in the gas generation area, the deviation of the detection result is small. It is just that the actual concentration at the same time cannot be matched. For example, there are gas 1, gas 2 and gas 3. When there is no one, their actual concentrations can be accurately detected by this embodiment, and the data are at the same time. If there are people in the laboratory and gas 1 is taken, only the concentrations of gas 2 and gas 3 at the same time can be detected, and gas 1 There is a small deviation between the concentration and the actual concentration, but it can be ignored. There is only a small time deviation between the actual concentrations of gas 2 and gas 3. For example, the actual concentrations of gas 2 and gas 3 monitored are the data from 2s ago, while the actual concentration of gas 1 is the data from 3s ago. However, the experimental area can be divided by dividing the gas generation area in this embodiment, and the problem of time difference in monitoring data during the experiment can be overcome by testing the perception time difference in different experimental areas. However, this embodiment does not provide a specific explanation. This embodiment focuses on monitoring when the laboratory is unused. If the user needs it, additional experimental area detection and perception time difference can be added. The existing technology for monitoring gas concentrations in the laboratory usually uses multiple sensors for distributed monitoring, which not only takes up laboratory space, but also increases the cost of equipment and maintenance. If the gas concentration is monitored at a fixed point, it cannot be ensured that the monitored gas concentration is the maximum value in the laboratory, and it cannot be ensured that different gas concentrations are data at the same time.

[0072] The area division module is used to build a digital twin model for the laboratory based on BIM model construction technology. The administrator divides the digital twin model into gas generation zones and marks the gas generated in each gas generation zone.

[0073] The regional division module is configured with regional division strategies, which include:

[0074] Build a digital twin model for the laboratory based on BIM model construction technology;

[0075] See also 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] Unconventional gases are associated with gas generation areas, and the unconventional gases corresponding to gas generation areas are named regionally generated gases;

[0077] In actual applications, when no one is using the laboratory, various chemical reagents are usually placed in a storage area, which is a fixed location. Chemical reagents that emit the same unconventional gas are usually the same reagent or have the same properties. They are all placed in the same location in the laboratory. Therefore, the administrator can divide the area in the top view of the digital twin model to obtain the gas generation area, which is actually the placement area of ​​different chemical reagents. Then the administrator can enter the various unconventional gases emitted by the chemical reagents placed in this area in the gas generation area to complete the association of unconventional gases with the gas generation area. For example Figure 2 Three gas generation areas are obtained by dividing the area, namely area A1, area A2 and area A3. Taking area A1 as an example, the regional generated gases in area A1 include ammonia, hydrogen cyanide, phosphine and other unconventional gases.

[0078] The concentration relationship test module is used to analyze the detection points of the gas generation area and test the concentration relationship of each gas generation area through ventilation test; the concentration relationship test module includes a detection point selection unit, a ventilation test 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 test 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] See also Figure 3 As shown, the location of the exhaust vent is marked in the top view of the digital twin model, marked as the exhaust point;

[0083] Set up each different gas generation area separately, and for any gas generation area, obtain the outline of the gas generation area and mark it as the area outline;

[0084] In practical applications, any unconventional gas that does not exist in the laboratory is selected as the test gas. The unconventional gas is a gas that does not exist in the air composition, that is, the unconventional gas whose initial reading of the integrated gas monitoring device is 0 can be selected. The test gas is selected according to different laboratories. This embodiment will not be described in detail. This embodiment only refers to the test gas. Figure 3 The position of the exhaust point is shown in the figure. The exhaust outlet is usually rectangular or circular. The exhaust point is the geometric center of the rectangle or circle. When analyzing area A1, the outline of area A1 is the regional outline.

[0085] See also 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, and the connected line segments are named connecting line segments. The two outermost connecting line segments, that is, the two connecting line segments with the largest angle between them, are retained, and the remaining connecting line segments are deleted. The remaining connecting line segments are named wind direction segments;

[0086] See also Figure 5 As shown, the angle between the two wind direction line segments is named the line segment angle, and an auxiliary ray is drawn with the exhaust point as the endpoint so that the auxiliary ray bisects the line segment angle;

[0087] Find the intersection point between the area outline and the auxiliary ray, name it the pending intersection point, and select the pending intersection point closest to the exhaust point as the detection point;

[0088] A test detection device for detecting the test gas is provided at the detection point;

[0089] In practical applications, the boundary points of the area are connected to the exhaust points. Figure 4 As shown, for easy observation, Figure 4 The walls of the laboratory in the top view are removed. Figure 4 The line segments in are the connecting line segments. Among them, the angle formed by the top connecting line segment and the bottom connecting line segment is the largest, so they are retained. The rest of the connecting line segments are removed to obtain the wind direction line segments. The wind direction line segments reveal the flow area of ​​the unconventional gas in area A1. The unconventional gas in area A1 is usually in the wind direction line segments when it drifts towards the exhaust outlet. The auxiliary rays and the undetermined intersection points are 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 detection point, and a test detection device is installed at the detection point;

[0090] The ventilation test unit is used to perform ventilation tests on the gas generation area;

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

[0092] When conducting ventilation test on any gas generation area, mark the corresponding gas generation area as the target analysis area;

[0093] The gear of the ventilation system is named ventilation gear, and the ventilation gear is adjusted to the lowest level. The test gas is discharged in the target analysis area. When the test detection device detects the test gas, a time node is recorded, marked as the regional perception moment, and represented by the symbol TA. When the comprehensive gas monitoring device detects the test gas, a time node is recorded, marked as the comprehensive perception moment, and represented by the symbol TB.

[0094] Calculate TB-TA to obtain the perception time difference, represented by the symbol TC. Record the concentration of the test gas recorded by the test detection device in real time, marked as the test detection concentration, and record the time node corresponding to the comprehensive detection concentration, marked as the test detection moment, represented by the symbol T1. Record the concentration of the test gas detected by the comprehensive gas monitoring device in real time, marked as the comprehensive detection concentration, and record the time node corresponding to the comprehensive detection concentration, marked as the comprehensive detection moment, represented by the symbol T2.

[0095] Calculate T2-T1 to get the corrected detection time, represented by the symbol T3, and integrate the test detection concentration and comprehensive detection concentration equal to T3 and T1 into the same concentration data, and the concentration data also includes the ventilation gear;

[0096] In practical applications, taking area A1 as an example, area A1 is marked as the target analysis area. The ventilation system of the laboratory in this embodiment has 4 gears, namely gear 1, gear 2, gear 3 and gear 4. The ventilation gear is adjusted to gear 1, and the test gas is discharged in the target analysis area by simply opening the bottle cap of the corresponding chemical reagent. When the test detection device detects the test gas, the regional perception time TA is recorded as 13:26:38, and the test detection concentration at this time is 0.328%. When the comprehensive gas monitoring device detects the test gas, the comprehensive perception time TB is recorded as 13:26:42, and the perception time difference TC is calculated to be 4s, that is, the comprehensive gas The gas concentration monitored by the body detection device when the ventilation system is in the first gear is the data of area A1 2 seconds ago; the test detection concentration and the test detection time T1 are recorded in real time, which are 0.364% and 13:26:42 respectively; the comprehensive detection concentration and the comprehensive detection time T2 are recorded in real time, which are 0.268% and 13:26:42 respectively; T3=T2-TC=13:26:38 is calculated, that is, 0.268% corresponds to the test detection concentration of 0.328% detected at 13:26:38, thereby obtaining a concentration data including the test detection concentration of 0.328%, the comprehensive detection concentration of 0.268%, and the ventilation gear is the first gear;

[0097] Stop emitting the test gas, and when both the test detection concentration and the comprehensive detection concentration return to zero, increase the ventilation gear by one and re-analyze, record the TC corresponding to each ventilation gear, and integrate the ventilation gear and the corresponding TC into gear efficiency data. Repeat the process until the highest ventilation gear is reached.

[0098] In actual application, stop emitting the test gas, and when the test detection concentration and the comprehensive detection concentration return to zero, increase the ventilation gear by one and re-analyze. This is because the different gears of the ventilation system will cause different gas flow speeds in the laboratory, which will cause the perception time difference to change. Therefore, when testing the perception time difference of different gears in area A1, referring to the above process, we can obtain a gear efficiency data: when the ventilation gear is the first gear, the perception time difference TC is 4s. Similarly, when the ventilation gears are the second gear, the third gear and the fourth gear, the perception time difference 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 area based on the results of the ventilation test;

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

[0101] The ventilation gears are marked as W in the order from small to large. n , where n is a positive integer and n is the sequence number of W;

[0102] Get W n Concentration data for W n The concentration data of the test detection concentrations are numbered by the symbol P nm Indicates that the comprehensive detection concentration in the concentration data is numbered, and the symbol G nm Indicates, where m is a positive integer and nm is the serial number of P and G, P nm Indicates that the ventilation position is W n When the mth test detection concentration is obtained through ventilation test, G nm Indicates that the ventilation position is W n When , the mth comprehensive detection concentration obtained by ventilation test;

[0103] See also Figure 6 As shown, G nm is the X axis, P nm Establish a plane rectangular coordinate system for the Y axis, named the nth concentration relationship diagram, and set P nm According to G nm Enter the nth concentration relationship diagram, each W n There is a corresponding n-th concentration relationship graph;

[0104] Performing linear regression analysis on the nth concentration relationship graph, and naming the straight line obtained by the linear regression analysis as the nth concentration relationship straight line;

[0105] Get the midpoint of the nth concentration relationship line, mark it as the nth concentration relationship midpoint, and change the G of the nth concentration relationship midpoint to nm and P nmMarked as H1 n and H2 n ;

[0106] Calculate H2 n / H1 n , mark the calculation result as the nth reference relationship, each W n There is an nth reference relationship corresponding to it;

[0107] In practical applications, W1 to W4 are obtained by numbering, which represent the first gear, second gear, third gear and fourth gear respectively. Taking W1 as an example, the concentration data is obtained and the test detection concentration P is obtained by numbering. 1m , where 1≤m≤300, which means 300 concentration data were obtained in the test of W1, P 1m The comprehensive detection concentration is G nm , the first concentration relationship diagram is constructed as follows Figure 6 As shown in the figure, the dotted line is the concentration relationship line. Since the gear of the ventilation system is fixed, the gas flow rate in each area of ​​the laboratory is also fixed, and the proportion of unconventional gases taken away is also maintained within a certain range, that is, the ventilation efficiency remains unchanged, 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 when the ventilation gear is W n When the H1 n In H2 n The reciprocal of the proportion of Figure 6 For example, get H1 n and H2 n They are 0.785% and 0.961% respectively. The first reference relationship is calculated to be 1.2242, and the calculation 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 area 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] Get the current ventilation gear of the ventilation system and mark it as the real-time gear;

[0111] Obtain the concentration of the unconventional gas monitored by the integrated gas monitoring device, mark it as the real-time concentration, and record the time when the real-time concentration is detected, mark it 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, and the gas generation area corresponding to the concentration to be analyzed is found and marked as the area to be analyzed;

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

[0114] In practical applications, for example, the current real-time gear position in the laboratory is gear 1. At the real-time monitoring time of 14:26:12, the real-time concentrations of gas 1, gas 2, gas 3, and gas 4 are monitored as 0.692%, 0.422%, 1.245%, and 0.528%, respectively. Gas 1, gas 2, and gas 3 are all in area A1, while gas 4 is in area A2. The real-time time difference obtained for area A1 is 4 seconds, and the real-time time difference for area A2 is 5 seconds.

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

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

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

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

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

[0120] Analyze all unconventional gases to obtain their actual concentrations, and integrate the actual concentrations at the same monitoring time into simultaneous concentration data for display to laboratory administrators;

[0121] In actual application, the target relationships of area A1 and area A2 are 1.2242 and 1.2584 respectively. The real-time concentrations of gas 1, gas 2 and gas 3 are multiplied by 1.2242 respectively, and the real-time concentration of gas 4 is multiplied by 1.2584. The actual concentrations of gas 1, gas 2 and gas 3 in area A1 are 0.847%, 0.517% and 1.524% respectively, while the actual concentration of gas 4 in area A2 is 0.664%. The actual monitoring time of gas 1, gas 2 and gas 3 is 14:26:12-4s=14:26:08, and the actual monitoring time of gas 4 is 14:26:12-5s=14:26:0.7, that is, the comprehensive gas The actual concentrations of gas 1, gas 2, and gas 3 monitored by the gas monitoring device at 14:26:12 are the data of 14:26:08, and the actual concentration of gas 4 is the data of 14:26:07. The actual concentrations of gas 1, gas 2, and gas 3 monitored at 14:26:07 one second ago are displayed simultaneously. Although there is a small delay in the monitoring of gas concentrations, it can ensure that the monitored gas concentrations are data at the same time, so that other modules in the management system can perform safety analysis, and the small delay will not cause safety problems during the gas emission process.

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

[0123] Step S1: Install a comprehensive gas monitoring device at the ventilation duct of the laboratory to monitor the gas in the laboratory. Step S1 includes the following sub-steps:

[0124] Step S101, installing a comprehensive gas monitoring device at the exhaust outlet of the ventilation duct in the laboratory;

[0125] Step S102, the comprehensive gas monitoring device is capable of detecting all unconventional gases;

[0126] Step S103, the unconventional gas is gas emitted by chemical reagents stored in the laboratory or gas generated by chemical reactions;

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

[0128] Step S201: construct a digital twin model for the laboratory based on BIM model construction technology;

[0129] In step S202, the administrator divides the area in the top view of the digital twin model and names the divided area as a gas generation area;

[0130] Step S203, associating the unconventional gas with the gas generation zone, and naming the unconventional gas corresponding to the gas generation zone as regional generated gas;

[0131] Step S3, analyzing the detection points of the gas generation area and testing the concentration relationship of each gas generation area through ventilation testing; Step S3 includes the following sub-steps:

[0132] Step S301, selecting a detection point for the gas generation area and setting up a test detection device;

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

[0134] Step S3011, selecting any unconventional gas that does not exist in the laboratory as a test gas;

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

[0136] Step S3013: setting up each different gas generation area separately, obtaining the outline of any gas generation area and marking 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 segments as connecting line segments, retain the two outermost connecting line segments, i.e., the two connecting line segments with the largest angle, delete the remaining connecting line segments, and name the remaining connecting line segments as wind direction 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, so that the auxiliary ray bisects the line segment angle;

[0139] Step S3016: Find the intersection point between the area outline and the auxiliary ray, name it as the pending intersection point, and select the pending intersection point closest to the exhaust point as the detection point;

[0140] Step S3017, setting a test detection device for detecting the test gas at the detection point;

[0141] Step S302, performing a ventilation test on the gas generation area;

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

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

[0144] In step S3022, the gear of the ventilation system is named ventilation gear, the ventilation gear is adjusted to the lowest gear, and the test gas is discharged into the target analysis area. When the test detection device detects the test gas, a time node is recorded and marked as the regional detection time, represented by the symbol TA. When the integrated gas monitoring device detects the test gas, a time node is recorded and marked as the integrated detection time, represented by the symbol TB.

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

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

[0147] Step S3025: Stop emitting the test gas. When both the test concentration and the comprehensive detection 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 to form level efficiency data. Repeat this process until the highest ventilation level is reached.

[0148] Step S303, analyzing the concentration relationship equation of the gas generation area based on the results of the ventilation test;

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

[0150] Step S3031: mark the ventilation gear as W in the order of ventilation gear from small to large. n , where n is a positive integer and n is the sequence number of W;

[0151] Step S3032, obtain W n Concentration data for W n The concentration data of the test detection concentrations are numbered by the symbol P nm Indicates that the comprehensive detection concentration in the concentration data is numbered, and the symbol G nm Indicates, where m is a positive integer and nm is the serial number of P and G, Pnm Indicates that the ventilation position is W n When the mth test detection concentration is obtained through ventilation test, G nm Indicates that the ventilation position is W n When , the mth comprehensive detection concentration obtained by ventilation test;

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

[0153] Step S3034, performing linear regression analysis on the nth concentration relationship graph, and naming the straight line obtained by the linear regression analysis as the nth concentration relationship straight line;

[0154] Step S3035: Get the midpoint of the nth concentration relationship line, mark it as the nth concentration relationship midpoint, and change the G of the nth concentration relationship midpoint to nm and P nm Marked as H1 n and H2 n ;

[0155] Step S3036, calculate H2 n / H1 n , mark the calculation result as the nth reference relationship, each W n There is an nth reference relationship corresponding to it;

[0156] Step S4, 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, obtaining the ventilation gear of the current ventilation system, marking it as the real-time gear;

[0158] Step S402: Acquire the concentration of the unconventional gas monitored by the integrated gas monitoring device, mark it as the real-time concentration, and record the time when the real-time concentration is 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 area corresponding to the concentration to be analyzed is found and marked as the area to be analyzed.

[0160] Step S404, searching the gear efficiency data of the area to be analyzed for the TC when the ventilation gear is equal to the real-time gear, and marking it as the real-time time difference;

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

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

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

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

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

[0166] In step S4054, all unconventional gases are analyzed to obtain the actual concentrations of all unconventional gases, and the actual concentrations at the same actual monitoring time are integrated into the concentration data at the same moment and displayed to the laboratory administrator.

[0167] In embodiment 3, the present application provides an electronic device, which may include: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus. The memory stores computer-readable instructions, and the processor can call the instructions in the memory. When the computer-readable instructions are executed by the processor, the steps in the laboratory control and management method based on digital twins are executed to achieve the following functions: monitoring the gas in the laboratory; building a digital twin model for the laboratory based on BIM model construction technology, and dividing the gas generation area in the digital twin model by the 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 concentration of the monitored gas.

[0168] In addition, the logical instructions in the above-mentioned memory can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the existing technology, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. 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, and other media that can store program code.

[0169] Example 4. The present application also provides a computer-readable storage medium. The present application provides a storage medium on which a computer program is stored. When the computer program is executed by the processor, the steps in the above-mentioned laboratory control and management method based on digital twins are executed to achieve the following functions: monitoring the gas in the laboratory; building a digital twin model for the laboratory based on BIM model construction technology, and dividing the gas generation area in the digital twin model by the 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 concentration of the monitored gas.

[0170] Through the description of the above embodiments, the embodiments of the present invention can be provided as methods, systems, or computer program products. Based on this understanding, the essence of the above technical solutions or the portion that contributes 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, a magnetic disk, or an optical disk, and includes a number of instructions for enabling a computer device (such as a personal computer, server, or network device) to execute the methods described in various embodiments or certain portions 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 function division. There may be other division methods in actual implementation. For example, multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of systems, modules and units can 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 the present application, rather than to limit them. Although the present application 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 application.

Claims

1. The laboratory control and management method based on digital twin is characterized by: The steps include: Install a comprehensive gas monitoring device in the laboratory's ventilation ducts to monitor the gas in the laboratory; A digital twin model of the laboratory was constructed based on BIM model construction technology. The administrator divided the digital twin model into gas generation zones and marked the gases produced in each zone. Analyze the detection points in the gas generation area and test the concentration relationship of each gas generation area through ventilation testing; The actual gas concentration in each gas generation zone is analyzed based on the concentration relationship and the concentration of the monitored gas.

2. The laboratory control and management method based on digital twin according to claim 1 is characterized in that: Installing a comprehensive gas monitoring device in the laboratory ventilation duct to monitor the gas in the laboratory includes the following sub-steps: Install a comprehensive gas monitoring device at the exhaust outlet of the laboratory ventilation duct; The comprehensive gas monitoring device is capable of detecting all unconventional gases; The unconventional gas is gas emitted by chemical reagents stored in the laboratory or gas generated by chemical reactions.

3. The laboratory control and management method based on digital twin according to claim 2 is characterized in that: Building a digital twin model for the laboratory based on BIM model construction technology, having the administrator divide the digital twin model into gas generation zones and mark the gas generated in each gas generation zone includes the following sub-steps: Build a digital twin model for the laboratory based on BIM model construction technology; The administrator divides the area in the top view of the digital twin model and names the divided area as the gas generation area; Unconventional gases are associated with gas generation areas, and the unconventional gases corresponding to gas generation areas are named regionally generated gases.

4. The laboratory control and management method based on digital twin according to claim 3 is characterized in that: Analyzing the detection points in the gas generation area and testing the concentration relationship of each gas generation area through ventilation testing includes the following sub-steps: Select detection points for the gas generation area and set up test detection equipment; Conduct ventilation tests on gas generating areas; The concentration relationship equation of the gas generation area is analyzed based on the results of the ventilation test.

5. The laboratory control and management method based on digital twin according to claim 4 is characterized in that: Setting up the exhaust test group and installing the test equipment for 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 vent in the top view of the digital twin model and mark it as the exhaust point; Set up each different gas generation area separately, and for any gas generation area, obtain the outline of the gas generation area and mark it as the area outline; 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 two connecting line segments with the largest angle between them, delete the remaining connecting line segments, and name the retained connecting line segments as wind direction segments; The angle between the two wind direction line segments is named the segment angle, and an auxiliary ray is drawn with the exhaust point as the endpoint so that the auxiliary ray bisects the segment angle. Find the intersection point between the area outline and the auxiliary ray, name it the pending intersection point, and select the pending intersection point closest to the exhaust point as the detection point; A test detection device for detecting the test gas is provided at the detection point.

6. The laboratory control and management method based on digital twin according to claim 5 is characterized in that: Ventilation testing of gas generation areas includes the following sub-steps: The ventilation system is tested by discharging test gas at different ventilation levels.

7. The laboratory control and management method based on digital twin according to claim 6 is characterized in that: Analyzing the concentration relationship equation of the gas generation area based on the results of the ventilation test includes the following sub-steps: The ventilation gears are marked as W in the order from small to large. n , where n is a positive integer and n is the sequence number of W; Get W n Concentration data for W n The concentration data of the test detection concentrations are numbered by the symbol P nm Indicates that the comprehensive detection concentration in the concentration data is numbered, and the symbol G nm Indicates, where m is a positive integer and nm is the serial number of P and G, P nm Indicates that the ventilation position is W n When the mth test detection concentration is obtained through ventilation test, G nm Indicates that the ventilation position is W n When , the mth comprehensive detection concentration obtained by ventilation test; G nm is the X axis, P nm Establish a plane rectangular coordinate system for the Y axis, named the nth concentration relationship diagram, and set P nm According to G nm Enter the nth concentration relationship diagram, each W n There is a corresponding n-th concentration relationship graph; Performing linear regression analysis on the n-th concentration relationship graph, and naming the straight line obtained by the linear regression analysis as the n-th concentration relationship straight line; Get the midpoint of the nth concentration relationship line, mark it as the nth concentration relationship midpoint, and change the G of the nth concentration relationship midpoint to nm and P nm Marked as H1 n and H2 n ; Calculate H2 n / H1 n , mark the calculation result as the nth reference relationship, each W n There is an nth reference relationship corresponding to this.

8. The laboratory control and management method based on digital twin according to claim 7 is characterized in that: Analyzing the actual gas concentration in each gas generation zone based on the concentration relationship and the monitored gas concentration includes the following sub-steps: Get the current ventilation gear of the ventilation system and mark it as the real-time gear; Obtain the concentration of the unconventional gas monitored by the integrated gas monitoring device, mark it as the real-time concentration, and record the time when the real-time concentration is detected, mark it 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, and the gas generation area corresponding to the concentration to be analyzed is found and marked as the area to be analyzed; Find the TC when the ventilation gear is equal to the real-time gear in the gear efficiency data of the area to be analyzed, and mark it as the real-time time difference; The actual concentration of the gas to be analyzed in the area to be analyzed is analyzed based on the real-time monitoring time, the real-time time difference, the real-time concentration and the concentration relationship.

9. The laboratory control and management method based on digital twins according to claim 8 is characterized in that: Analyzing the actual concentration of the gas to be analyzed in the area to be analyzed based on the real-time monitoring time, the real-time time difference, the real-time concentration, and the concentration relationship includes the following sub-steps: Mark the nth reference relationship corresponding to the real-time gear position as the target relationship; Multiply the real-time concentration by the target relationship to obtain the actual concentration of the gas to be analyzed in the area to be analyzed; Calculate the real-time monitoring time minus the real-time time difference to obtain the actual monitoring time of the actual concentration; All unconventional gases are analyzed to obtain their actual concentrations. The actual concentrations at the same monitoring time are integrated into simultaneous concentration data for display to the laboratory administrator.

10. A laboratory control and management system based on digital twins, used to implement the laboratory control and management method based on digital twins according to any one of claims 1 to 9, characterized in that: It includes a gas monitoring module, a region division module, a concentration relationship test 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 test module data; 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 for the laboratory based on BIM model construction technology, and the administrator divides the digital twin model into gas generation areas and marks the gas generated by each gas generation area; The concentration relationship testing module is used to analyze the detection points of the gas generation area and test the concentration relationship of each gas generation area through ventilation testing; The actual concentration calculation module is used to analyze the actual gas concentration in each gas generation area based on the concentration relationship and the monitored gas concentration.

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