Intelligent reagent storage cabinet and management system thereof

Abstract

The present application relates to the technical field of laboratory special equipment, and more particularly to an intelligent reagent storage cabinet and a management system thereof, the intelligent reagent storage cabinet comprising an automatic medicine taking module and an information acquisition module, the automatic medicine taking module comprising a plurality of isolated medicine taking channels, each isolated medicine taking channel being configured to automatically take medicine in a target reagent compartment and automatically update a medicine taking log, and the information acquisition module comprising a plurality of sensor groups configured to monitor gas data of each feature point in real time; the intelligent reagent storage cabinet management system comprising a confirmation module and an adjustment module, the confirmation module being configured to determine the working state of a ventilation device according to the air speed of a fan inlet and outlet to determine the fluid motion state of the reagent storage cabinet; and the adjustment module being configured to determine the channel attribute of a corresponding isolated medicine taking channel in combination with each medicine taking log, and determine the isolated medicine taking channel for the current medicine taking according to the channel attribute of each isolated medicine taking channel in response to a medicine taking request. The present application reduces the mutual contamination between stored reagents and the contamination of the external environment during medicine taking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laboratory special equipment, and particularly relates to an intelligent reagent storage cabinet and a management system thereof. BACKGROUND

[0002] The net gas type reagent cabinet is a device specially designed for storing chemical products, biological products and other special requirement products, adopts the negative pressure adsorption principle, combines with the intelligent control system, and ensures the cleanliness and sterility of the stored products through filtering, purifying, dehumidifying and other functions, and is widely applicable to various laboratory environments.

[0003] Chinese Patent Publication No. CN111804349B discloses an intelligent net gas type reagent cabinet, belonging to the field of laboratory special equipment. The cabinet includes a cabinet body, which sequentially includes a photocatalytic functional area and a storage area from top to bottom, and the storage area is connected to the photocatalytic functional area through an air guide system. A plurality of storage partitions are arranged in the storage area, each storage partition divides the storage area into a plurality of storage cabinets, and a reagent elastic separation fixing device is arranged on the upper part of each storage partition. The intelligent net gas type reagent cabinet has the following characteristics: first, it is directly placed in the room without external ventilation pipeline and odor, providing a healthy and safe operating environment for customers; second, it provides a complete reagent storage solution, which can be combined with and placed in various forms of storage; third, it realizes one-time investment and recycling, and the equipment can be moved, disassembled, and recycled in the case of laboratory moving, reconstruction, etc. The product is easy to install and use, providing a better user experience for customers.

[0004] Therefore, the prior art has the following problems:

[0005] The reagent cabinet fails to maintain the relative independence of each reagent, resulting in contamination of the reagent when taking the reagent, and does not consider the pollution caused to the external environment when the door is opened to take the reagent. SUMMARY

[0006] Therefore, the present application provides an intelligent reagent storage cabinet and a management system thereof to overcome the problem that the prior art fails to maintain the relative independence of each reagent in the reagent cabinet, resulting in contamination of the reagent when taking the reagent, and does not consider the pollution caused to the external environment when the door is opened to take the reagent.

[0007] To achieve the above purpose, the present application provides an intelligent reagent storage cabinet, which comprises a cabinet body, a reagent placing part and a ventilation device, and further comprises:

[0008] An automatic reagent taking module connected to the ventilation device, at least comprising one main isolated reagent taking channel and one auxiliary isolated reagent taking channel, each of the isolated reagent taking channels being used for automatic reagent taking in a target reagent compartment and automatic updating of a reagent taking log;

[0009] An information collection module is provided inside the cabinet and includes a sensor group for real-time monitoring of gas data at each characteristic point and a wind speed collection unit for real-time monitoring of wind speed at the fan inlet and outlet;

[0010] The gas data includes gas flow rate and gas concentration.

[0011] As a preferred technical solution of the intelligent reagent storage cabinet, it also includes a fluid simulation module for constructing a three-dimensional model of the reagent storage cabinet and performing a fluid dynamics simulation experiment based on the three-dimensional model to determine the internal airflow path of the reagent storage cabinet, and determine the circulation dead angle of the reagent storage cabinet based on the internal airflow path;

[0012] The information collection module determines the center point of each of the cyclic blind spots as a feature point.

[0013] As a preferred technical solution for the intelligent reagent storage cabinet, a single sensor group includes a wind speed sensor and a gas concentration sensor;

[0014] The wind speed sensor is used to collect the gas flow rate at the corresponding characteristic point;

[0015] The gas concentration sensor is used to collect the gas concentration at the corresponding characteristic point;

[0016] Wherein, the type of the gas concentration sensor is determined according to the type of reagent stored at the characteristic point;

[0017] The number of sensor groups is the same as the number of feature points.

[0018] The present invention also provides an intelligent reagent storage cabinet management system, which is connected to the automatic drug dispensing module, the information collection module and the ventilation device respectively, and includes:

[0019] a confirmation module for determining the working state of the ventilation device based on the wind speed at the fan inlet and outlet, and for determining whether to determine the fluid movement state of the reagent storage cabinet in combination with the gas data of each characteristic point based on the determination result of the working state;

[0020] An adjustment module is connected to the confirmation module and is used to determine the channel attributes of the corresponding isolated drug collection channel based on the determination result of the fluid movement state in combination with each drug collection log, and, in response to a drug collection request, determine the isolated drug collection channel for this drug collection based on the channel attributes of each isolated drug collection channel.

[0021] As a preferred technical solution for the intelligent reagent storage cabinet management system, the confirmation module determines the fan operation trend based on the wind speed at the fan inlet and the inlet wind speed range, determines the filter element saturation trend based on the wind speed difference between the fan inlet and outlet wind speeds, and determines the working state of the ventilation device based on the operation trend and the filter element saturation trend, including:

[0022] According to the results of the normal operation trend and the implicit saturation trend, confirm that the working state of the ventilation device is in normal working state;

[0023] The fan operation trend includes a normal operation trend and an abnormal operation trend, and the filter element saturation trend includes a latent saturation trend and an explicit saturation trend.

[0024] As a preferred technical solution for the intelligent reagent storage cabinet management system, based on the determination result of the normal working state, the confirmation module combines the gas data of each characteristic point to determine the fluid movement state of the reagent storage cabinet, including:

[0025] According to the determination result that the gas flow rate is greater than the preset flow rate and the gas concentration is less than the preset concentration, the fluid movement state of the corresponding characteristic point is determined to be normal fluid movement, and the fluid movement state of the reagent storage cabinet is determined according to the proportion of the number of characteristic points of normal fluid movement;

[0026] The fluid motion state includes normal fluid motion and abnormal fluid motion.

[0027] As a preferred technical solution for the intelligent reagent storage cabinet management system, based on the determination result of normal fluid movement, the adjustment module determines the drug attributes and drug withdrawal time of the last drug withdrawal according to the drug withdrawal log of a single isolated drug withdrawal channel, and determines the channel attributes of the isolated drug withdrawal channel according to the drug withdrawal time, including:

[0028] According to the result of determining that the medication withdrawal time is less than the preset time, determining that the channel attribute of the isolated medication withdrawal channel is the same as the medication attribute of the last medication withdrawal;

[0029] According to the determination result that the medicine taking time is greater than or equal to the preset time, the channel attribute of the isolated medicine taking channel is determined to be a channel without attributes.

[0030] As a preferred technical solution of the intelligent reagent storage cabinet management system, in response to a drug retrieval request, the adjustment module determines the drug attributes of the drug to be retrieved and the channel attributes of each isolated drug retrieval channel to determine the isolated drug retrieval channel for the drug to be retrieved.

[0031] If there is an isolated drug dispensing channel with the same properties as the drug to be dispensed this time, then it is determined to be the isolated drug dispensing channel for this drug dispensing;

[0032] If there is no isolated drug collection channel with the same attributes as the drug to be collected this time, the attributeless channel is determined to be the isolated drug collection channel for this time.

[0033] As the preferred technical solution for the intelligent reagent storage cabinet management system, the adjustment module pre-stores a mapping relationship table between gas flow rate and preset time to determine the corresponding preset time according to the real-time gas flow rate of the isolated drug collection channel.

[0034] Compared with the existing technology, the beneficial effect of the present invention is that the intelligent reagent storage cabinet provided by the present invention breaks through the bottlenecks of traditional cabinets in airflow control, safety protection and management efficiency through the three-dimensional innovation of automated operation, intelligent monitoring and simulation optimization. It is particularly suitable for scenarios such as high-risk chemical laboratories and biosafety laboratories, providing a precise, safe and intelligent integrated solution for the storage of hazardous reagents, and promoting the upgrading of laboratory management towards digitalization and unmanned operation.

[0035] In particular, the design of isolated primary and secondary drug dispensing channels avoids channel interference during drug dispensing. Combined with the two-dimensional sliding mechanism of the horizontal crossbar 2 and the vertical vertical bar 1, precise positioning of the reagent storage compartment and automatic drug dispensing are achieved. There is no need to manually open the cabinet front door during the entire process, reducing direct contact between personnel and harmful reagents and lowering the risk of poisoning.

[0036] In particular, sensors are deployed in targeted locations based on the dead-spot center points (such as cabinet corners and shelf gaps) identified by the fluid simulation module, addressing the blind spot issues of traditional cabinet "one-size-fits-all" monitoring and ensuring that all gas data in these dead-spot areas is captured. Furthermore, by analyzing the wind speed differential at the fan inlet and outlet, filter blockage or fan failure can be determined in real time, providing early warning of filter replacement (such as saturation alarms) or equipment maintenance, thus avoiding secondary contamination caused by purification failure.

[0037] In particular, the intelligent reagent storage cabinet management system provided by the present invention significantly improves the safety and management efficiency of laboratory reagent storage through multi-module collaboration and data-driven logic: it accurately diagnoses the status of the ventilation device through two-dimensional analysis, identifies operational anomalies based on the comparison of the fan inlet wind speed with the standard range, quantifies the saturation of the filter element through the inlet / outlet wind speed difference, and realizes the root cause location and active maintenance of the ventilation device, thereby reducing the waste of consumables; in terms of cabinet clean air management, it integrates the characteristic point gas data to dynamically evaluate the normality of the air flow movement; in the scheduling of isolated drug collection channels, it dynamically assigns channel attributes according to the fluid state and the drug collection log, and intelligently matches drug collection requests; the present invention constructs a closed-loop process of monitoring, diagnosis, adjustment and execution, and accumulates operation and maintenance data to optimize management strategies, promotes the transformation of laboratories to data-driven intelligent management, and provides technical support for the construction of unmanned laboratories;

[0038] In particular, the adjustment module dynamically manages the attributes of the isolated drug collection channel through drug collection logs and time logic, achieving intelligent matching of the drug collection process and precise risk prevention and control: the channel attributes are automatically calibrated based on the drug attributes (such as high volatility, severe toxicity) and the time of the last drug collection through the isolated drug collection channel; if the drug collection time is less than the preset time (such as recent use), the channel retains the original drug attributes, ensuring that high-risk reagents of the same type are taken out through the dedicated channel first, avoiding mixed volatile gas contamination caused by cross-use of the same channel by reagents of different risk levels; if the drug collection time exceeds the preset time, the channel attributes are automatically reset to no attributes to prevent misjudgment of attribute residues due to long-term non-use;

[0039] In particular, when responding to a request to retrieve medicine, priority is given to calling channels with the same attributes as the medicine being retrieved, reducing channel cleaning or waiting time. For example, when retrieving highly volatile reagents, the channel marked as "high volatility" is directly dispatched. If there is no matching channel, the channel without attributes is called, and the medicine is retrieved using the default flow rate and purification procedure to ensure a smooth process. This mechanism improves the efficiency of retrieving similar reagents and reduces contamination between medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a connection diagram of the intelligent reagent storage cabinet according to an embodiment of the present invention;

[0041] Figure 2 This is a connection diagram of the intelligent reagent storage cabinet management system according to an embodiment of the present invention;

[0042] Figure 3 A flowchart for determining an isolated medication access channel for medication access according to an embodiment of the present invention;

[0043] In the figure: 1, vertical rod; 2, horizontal rod. DETAILED DESCRIPTION

[0044] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0045] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0046] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0047] In addition, it should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Please refer to Figure 1 The connection relationship diagram of the intelligent reagent storage cabinet is shown in the figure. The present application provides an intelligent reagent storage cabinet, which comprises a cabinet body, a reagent placing part and a ventilation device, and further comprises:

[0049] An automatic medicine taking module is connected with the ventilation device and comprises at least one main isolated medicine taking channel and one auxiliary isolated medicine taking channel. Each of the isolated medicine taking channels is used for automatic medicine taking in a target reagent compartment and automatic updating of a medicine taking log;

[0050] An information acquisition module is arranged inside the cabinet body and comprises a sensor group for real-time monitoring of gas data of each feature point and a wind speed acquisition unit for real-time monitoring of the wind speed of the air inlet and outlet of the fan;

[0051] The gas data comprises gas flow rate and gas concentration.

[0052] It can be understood that the top of the cabinet body of the intelligent reagent storage cabinet is provided with a partition layer for mounting a silent fan, activated carbon and the like. The air supply column and the air return column are usually located on the rear wall on both sides of the inner wall of the cabinet body, and the filter air outlets are uniformly distributed on the columns for connecting the partition layer and the reagent placing part, so that the air forms a circulation in the cabinet body.

[0053] It can be understood that the reagent placing part is arranged between the rear wall of the cabinet body and the front door, and the side of the reagent placing part close to the front door is provided with a door made of transparent material, i.e. the reagent placing part comprises a plurality of reagent storage compartments, each of which is provided with a transparent door on the side close to the front door of the cabinet body, and each of which is connected with the rear wall on the side close to the rear wall of the cabinet body, so that each reagent storage compartment forms a relatively closed space for placing reagents. The front door can be made of transparent material or opaque material, and the front door made of transparent material facilitates the observation of the internal conditions by the experimenters. Each layer of reagent storage compartments is provided with filter air outlets communicating with the air supply column and the air return column, so as to facilitate the circulation and purification of air.

[0054] It can be understood that the ventilation device refers to a silent fan and a filter part (including activated carbon);

[0055] It can be understood that the reagent storage cabinet includes a unique medicine taking opening arranged on the front door, generally the front door of the cabinet body is not opened, and the reagents are taken in and out through the medicine taking opening, and the front door can be opened only under special circumstances after approval;

[0056] In the implementation, the automatic medicine taking module is further added, including at least two isolated medicine taking channels (one main isolated medicine taking channel and one auxiliary isolated medicine taking channel, it can be understood that the auxiliary isolated medicine taking channel is at least one), each isolated medicine taking channel slides on the horizontal crossbar 2 (the horizontal crossbar 2 on which the main isolated medicine taking channel is located is indicated in the figure, and the horizontal crossbar 2 on which the auxiliary isolated medicine taking channel is located is not indicated), and the horizontal crossbar 2 can slide on the vertical vertical bar 1 (two or one, Figure 1 two are drawn in the figure but only one is indicated) (the vertical vertical bar 1 has two and is arranged in parallel on the two side walls of the cabinet body); at each time of taking medicine, the isolated medicine taking channel is first controlled to slide to the position between the reagent storage compartment and the front door of the cabinet body according to the position of the reagent storage compartment to be taken, and then the corresponding reagent is taken from the reagent storage compartment (in the implementation, an extension rod can be installed at one end of each reagent storage compartment close to the rear wall of the cabinet body to push the reagent into the isolated medicine taking channel, or a grabbing mechanism can be added in the isolated medicine taking channel to grab the corresponding reagent and place it in the isolated medicine taking channel; the process of moving the reagent from the reagent storage compartment to the isolated medicine taking channel can be realized by the existing technology, so the specific process of completing this process is not described in detail herein), and finally the reagent is moved to the unique medicine taking opening of the reagent storage cabinet and taken out by the experimenter, thereby completing the medicine taking process;

[0057] In the implementation, the isolated medicine taking channel is generally divided into a main isolated medicine taking channel and an auxiliary isolated medicine taking channel, and when both of them meet the medicine taking conditions, the main isolated medicine taking channel is used to take medicine first; it can be understood that the horizontal crossbar 2 on which the main isolated medicine taking channel and the auxiliary isolated medicine taking channel are located is different, and generally the main isolated medicine taking channel and the auxiliary isolated medicine taking channel are located below and above the reagent placing part respectively to avoid being hindered when moving;

[0058] In the implementation, the wind speed collection unit includes a first wind speed sensor arranged on one side of the air inlet of the fan and a second wind speed sensor arranged on one side of the air outlet of the fan.

[0059] It can be understood that the reagent storage cabinet provided by the embodiment of the present application is based on the existing clean air type reagent cabinet technology and adds an automatic medicine taking module, an information collection module and a fluid simulation module, wherein the automatic medicine taking module and the information collection module are arranged in the cabinet body, and the fluid simulation module is arranged in the control center.

[0060] Specifically, it also includes a fluid simulation module for constructing a three-dimensional model of the reagent storage cabinet and performing a fluid mechanics simulation experiment based on the three-dimensional model to determine the internal airflow path of the reagent storage cabinet, and determining the circulation dead angle of the reagent storage cabinet based on the internal airflow path;

[0061] The information collection module determines the center point of each of the cyclic blind spots as a feature point.

[0062] In implementation, the fluid simulation module has built-in fluid dynamics simulation software, including Fluent, CFD, OpenFOAM, etc.

[0063] It can be understood that dead zones in circulation are areas where airflow is poor and renewal is slow;

[0064] In the implementation, the velocity field, pressure field, streamline distribution and residence time in the fluid simulation results are analyzed to locate the areas where the airflow is stagnant or the circulation is insufficient, including: (1) velocity cloud map and vector map: ① In the velocity cloud map, the area with colder color (such as blue) and sparse vector arrows (low-speed area) may be a dead corner; the appearance of closed circulation or vortex in the vector map (such as the corner of the cabinet, under the shelf) indicates that the airflow is stagnant here; (2) pressure distribution analysis: the dead corner area often forms local high pressure or low pressure due to poor airflow, making it difficult for the surrounding airflow to flow in; if there is a closed space at the top or bottom of the cabinet, a pressure island may be formed; (3) streamline tracking and particle trajectory, Release virtual tracer particles at the entrance and track their movement trajectory: ① Stagnant particles (i.e., a group of particles that stay in a certain area for a long time (e.g., more than 2 times the average residence time)) indicate the location of a dead corner; ② Short circulation paths (i.e., particles only flow near the air inlet and exhaust port and do not cover the far end area inside the cabinet) indicate the existence of an airflow blind spot; (4) Use computational fluid dynamics (CFD) post-processing tools (e.g., ParaView, Ensight) to calculate the gas residence time in each area. Residence time = area volume ÷ (average flow velocity × flow cross-sectional area)), among which the high residence time area (e.g., more than 1.5 times the average residence time of the entire cabinet) is determined as a circulation dead corner.

[0065] It is understandable that after confirming the circulation dead corner, the guide plate will be set accordingly to avoid the existence of the dead corner, but the originally determined dead corner position is still the characteristic point; it is understandable that the guide plate layout is not the problem to be solved by the present invention, and there are layout methods in the prior art, so it will not be repeated.

[0066] Specifically, a single sensor group includes a wind speed sensor and a gas concentration sensor;

[0067] The wind speed sensor is used to collect the gas flow rate at the corresponding characteristic point;

[0068] The gas concentration sensor is used to collect the gas concentration at the corresponding feature point;

[0069] The type of the gas concentration sensor is determined according to the type of the reagent stored at the feature point; for example, if the type of the reagent (i.e., the drug attribute) stored at a certain feature point is a volatile organic compound, then the gas concentration sensor of the feature point is a TVOC gas detector; if the type of the reagent stored at a certain feature point is hydrogen sulfide, then the gas concentration sensor of the feature point is an H2S gas detector; that is, according to the type of the reagent stored at the feature point, the corresponding sensor that can detect the gas concentration volatilized by the reagent is determined; if the type of the reagent stored at the feature point is a non-volatile reagent, then no gas concentration sensor needs to be set at the feature point, and the gas concentration at the feature point is by default less than the preset concentration;

[0070] The number of sensor groups is the same as the number of feature points.

[0071] It can be understood that the drug attribute includes low volatility, high volatility, micro-toxicity, and high toxicity.

[0072] Referring to Figure 2 The intelligent reagent storage cabinet management system of the embodiment of the application is connected to the automatic drug dispensing module, the information collection module, and the ventilation device, and includes:

[0073] The confirmation module is used to determine the working state of the ventilation device according to the wind speed of the fan inlet and outlet, and to determine whether to determine the fluid motion state of the reagent storage cabinet in combination with the gas data of each feature point according to the determination result of the working state;

[0074] The adjustment module is connected to the confirmation module and is used to determine the channel attribute of the corresponding isolated dispensing channel in combination with each dispensing log according to the determination result of the fluid motion state, and to determine the isolated dispensing channel for this dispensing according to the channel attribute of each isolated dispensing channel in response to a dispensing request.

[0075] Referring to Figure 3 The flow chart of determining the isolated dispensing channel for dispensing in the embodiment of the application is shown. Specifically, the confirmation module determines the fan operation trend according to the wind speed of the fan inlet and the range of the inlet air speed, determines the filter core saturation trend according to the wind speed difference between the fan inlet wind speed and the outlet wind speed, and determines the working state of the ventilation device according to the operation trend and the filter core saturation trend, including:

[0076] Based on the results of the normal operation trend and the latent saturation trend, it is confirmed that the working state of the ventilation device is in normal operation. It can be understood that the ventilation device includes a silent fan and a filter structure. The normal operation trend indicates that the silent fan is operating normally, and the latent saturation trend indicates that the filter element resistance of the filter structure is not very large, that is, it has not been adsorbed to saturation and can continue to be used. The two together determine that the ventilation device is still in normal operation.

[0077] It should be understood that, based on the determination results of the abnormal operation trend and / or the dominant saturation trend, the operating state of the ventilation device is confirmed to be an abnormal operating state; it should be understood that, for the determination result of the abnormal operating state, the confirmation module needs to determine whether the abnormal operation of the fan or the saturation of the filter element of the filter structure is the cause, and repair it according to the cause. If the fan is operating abnormally, it is repaired; if the filter element is saturated, a new filter element is replaced;

[0078] The fan operation trend includes a normal operation trend and an abnormal operation trend, and the filter element saturation trend includes a latent saturation trend and an explicit saturation trend.

[0079] During implementation, the confirmation module determines that the fan operation trend is a normal operation trend based on the determination result that the wind speed at the fan inlet is within the intake wind speed range. It is understandable that the intake wind speed range is determined based on the operating parameters of the fan. When the fan leaves the factory, there should be prior experimental records of the exhaust wind speed range during normal operation (i.e., the intake wind speed range), or the intake wind speed range should be determined based on standards such as "JG / T385-2012 Ductless Self-Purifying Exhaust Cabinet". During implementation, the intake wind speed range is usually selected within the range of 0.3m / s to 0.6m / s.

[0080] During implementation, the confirmation module determines the filter element saturation trend based on the wind speed difference between the fan inlet wind speed and the air outlet wind speed, wherein: if the wind speed difference is less than or equal to the preset wind speed difference, the filter element saturation trend is determined to be a latent saturation trend; if the wind speed difference is greater than the preset wind speed difference, the filter element saturation trend is determined to be an explicit saturation trend; it should be understood that under normal working conditions, the average exhaust wind speed of the clean air cabinet is usually 0.3~0.6m / s. Due to the resistance of the filter element, the return wind speed is slightly lower than the exhaust wind speed. The new filter element has small ventilation resistance, and the difference between the exhaust and return wind speeds is small (such as a difference of 0.05m / s). As the filter element adsorbs more pollutants, the resistance increases, and the wind speed difference gradually expands (such as the difference reaches 0.1m / s~0.15m / s after 3 months of use), but under normal circumstances the wind speed difference should be maintained within the safety threshold; during implementation, the preset wind speed difference is usually set to 0.2m / s.

[0081] Specifically, based on the determination result of the normal working state, the confirmation module determines the fluid movement state of the reagent storage cabinet in combination with the gas data of each characteristic point, including:

[0082] According to the determination result that the gas flow rate is greater than the preset flow rate and the gas concentration is less than the preset concentration, the fluid movement state of the corresponding characteristic point is determined to be normal fluid movement, and the fluid movement state of the reagent storage cabinet is determined according to the proportion of the number of characteristic points of normal fluid movement;

[0083] Wherein, the fluid motion state includes normal fluid motion and abnormal fluid motion;

[0084] It can be understood that there are several characteristic points. If only a very small proportion of the characteristic points are abnormal fluid movement, it may be that the sensor group corresponding to the characteristic points is abnormal, and there is contingency. Therefore, in implementation, the fluid movement state of the reagent storage cabinet is determined to be normal fluid movement based on the judgment result that the proportion of the number of characteristic points of normal fluid movement is greater than or equal to the preset proportion. This setting can avoid abnormal judgment caused by contingency.

[0085] It is understandable that the normal operation of the clean air reagent cabinet can only be ensured under the premise of the normal operation of the ventilation device; therefore, it is necessary to first determine whether the ventilation device is operating normally, and then combine the gas data of each circulation dead corner to determine whether the entire reagent cabinet is normal.

[0086] Specifically, based on the determination result that the reagent storage cabinet is in normal fluid movement, the adjustment module determines the drug attributes and drug collection time of the last drug collection according to the drug collection log of a single isolated drug collection channel, and determines the channel attributes of the isolated drug collection channel according to the drug collection time, including:

[0087] According to the result of determining that the medication withdrawal time is less than the preset time, determining that the channel attribute of the isolated medication withdrawal channel is the same as the medication attribute of the last medication withdrawal;

[0088] According to the determination result that the medicine taking time is greater than or equal to the preset time, the channel attribute of the isolated medicine taking channel is determined to be a channel without attributes.

[0089] Specifically, in response to the medication request, the adjustment module determines the medication attributes of the medication to be taken and the channel attributes of each isolated medication channel to determine the isolated medication channel for the medication to be taken.

[0090] If there is an isolated drug dispensing channel with the same properties as the drug to be dispensed this time, then it is determined to be the isolated drug dispensing channel for this drug dispensing;

[0091] If there is no isolated drug collection channel with the same attributes as the drug to be collected this time, the attributeless channel is determined to be the isolated drug collection channel for this time.

[0092] Specifically, the regulating module pre-stores a mapping relationship table between gas flow rate and preset time to determine the corresponding preset time (ie, the shortest purification time required to maintain the current flow rate) according to the real-time gas flow rate of the isolated drug extraction channel.

[0093] It should be understood that there are corresponding return air columns and supply air columns at the initial position of each isolated medicine-taking channel to ventilate the corresponding isolated medicine-taking channel;

[0094] It is understandable that the preset time is negatively correlated with the flow rate (the higher the flow rate, the shorter the single cycle time); the preset time is positively correlated with the risk level; therefore, the higher the volatility (faster molecular diffusion rate) or the higher the toxicity level (greater safety risk), the preset time needs to be extended under the condition of unchanged flow rate to ensure that the volatile gas is captured and purified in time.

[0095] It can be understood that the normal operating flow rate in the clean gas reagent storage cabinet is 0.2m / s~0.6m / s, and the preset time = single cycle time × number of safe cycles; the higher the risk level, the more cycles; in implementation, for example, the number of safe cycles for low volatility reagents is usually 1, the number of safe cycles for high volatility reagents / slightly toxic reagents is usually 2, and the number of safe cycles for highly toxic reagents is usually 3; usually the preset time for low volatility reagents is usually 2 minutes, the preset time for high volatility reagents / slightly toxic reagents is usually 3 minutes~4 minutes, and the preset time for highly toxic reagents is at least 5 minutes.

[0096] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0097] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An intelligent reagent storage cabinet, comprising a cabinet body, a reagent placement portion and a ventilation device, characterized in that: Also includes: An automatic drug dispensing module, connected to the ventilation device, comprising at least one primary isolated drug dispensing channel and one secondary isolated drug dispensing channel, each of the isolated drug dispensing channels being used to automatically dispense drugs from a target reagent compartment and automatically update a drug dispensing log; An information collection module is provided inside the cabinet and includes a sensor group for real-time monitoring of gas data at each characteristic point and a wind speed collection unit for real-time monitoring of wind speed at the fan inlet and outlet; Wherein, the gas data includes gas flow rate and gas concentration; The system further includes a fluid simulation module for constructing a three-dimensional model of the reagent storage cabinet and performing a fluid mechanics simulation experiment based on the three-dimensional model to determine an internal airflow path of the reagent storage cabinet, and determining a circulation dead angle of the reagent storage cabinet based on the internal airflow path; The information collection module determines the center point of each of the cyclic blind spots as a feature point; A single sensor group includes a wind speed sensor and a gas concentration sensor; The wind speed sensor is used to collect the gas flow rate at the corresponding characteristic point; The gas concentration sensor is used to collect the gas concentration at the corresponding characteristic point; Wherein, the type of the gas concentration sensor is determined according to the type of reagent stored at the characteristic point; The number of sensor groups is the same as the number of feature points.

2. An intelligent reagent storage cabinet management system applied to the intelligent reagent storage cabinet according to claim 1, connected to the automatic drug dispensing module, the information collection module and the ventilation device respectively, characterized in that: include: a confirmation module for determining the working state of the ventilation device based on the wind speed at the fan inlet and outlet, and for determining whether to determine the fluid movement state of the reagent storage cabinet in combination with the gas data of each characteristic point based on the determination result of the working state; An adjustment module is connected to the confirmation module and is used to determine the channel attributes of the corresponding isolated drug collection channel based on the determination result of the fluid movement state in combination with each drug collection log, and, in response to a drug collection request, determine the isolated drug collection channel for this drug collection based on the channel attributes of each isolated drug collection channel.

3. The intelligent reagent storage cabinet management system according to claim 2, characterized in that: The confirmation module determines the fan operation trend according to the wind speed at the fan inlet and the inlet wind speed range, determines the filter element saturation trend according to the wind speed difference between the fan inlet wind speed and the air outlet wind speed, and determines the working state of the ventilation device according to the operation trend and the filter element saturation trend, including: According to the results of the normal operation trend and the implicit saturation trend, confirm that the working state of the ventilation device is in normal working state; The fan operation trend includes a normal operation trend and an abnormal operation trend, and the filter element saturation trend includes a latent saturation trend and an explicit saturation trend.

4. The intelligent reagent storage cabinet management system according to claim 2, characterized in that: Based on the determination result of the normal working state, the confirmation module determines the fluid movement state of the reagent storage cabinet in combination with the gas data of each characteristic point, including: According to the determination result that the gas flow rate is greater than the preset flow rate and the gas concentration is less than the preset concentration, the fluid movement state of the corresponding characteristic point is determined to be normal fluid movement, and the fluid movement state of the reagent storage cabinet is determined according to the proportion of the number of characteristic points of normal fluid movement; The fluid motion state includes normal fluid motion and abnormal fluid motion.

5. The intelligent reagent storage cabinet management system according to claim 2, characterized in that: Based on the determination result of normal fluid movement, the adjustment module determines the drug attributes and drug withdrawal time of the last drug withdrawal according to the drug withdrawal log of a single isolated drug withdrawal channel, and determines the channel attributes of the isolated drug withdrawal channel according to the drug withdrawal time, including: According to the result of determining that the medication withdrawal time is less than the preset time, determining that the channel attribute of the isolated medication withdrawal channel is the same as the medication attribute of the last medication withdrawal; According to the determination result that the medicine taking time is greater than or equal to the preset time, the channel attribute of the isolated medicine taking channel is determined to be a channel without attributes.

6. The intelligent reagent storage cabinet management system according to claim 2, characterized in that: In response to the medication request, the adjustment module determines the medication attributes of the medication to be taken and the channel attributes of each isolated medication channel to determine the isolated medication channel for the medication to be taken. If there is an isolated drug dispensing channel with the same properties as the drug to be dispensed this time, then it is determined to be the isolated drug dispensing channel for this drug dispensing; If there is no isolated drug collection channel with the same attributes as the drug to be collected this time, the attributeless channel is determined to be the isolated drug collection channel for this time.

7. The intelligent reagent storage cabinet management system according to claim 5, characterized in that: The regulating module pre-stores a mapping relationship table between gas flow rate and preset time to determine the corresponding preset time according to the real-time gas flow rate of the isolated medicine-taking channel.

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