Biological safety cabinet control method, biological safety cabinet and storage medium

Abstract

The present application belongs to the field of biological safety technology, and particularly relates to a biological safety cabinet control method, a biological safety cabinet and a storage medium. The present application aims to solve the problem of high cost and low monitoring accuracy of the wind speed in the biological safety cabinet, thereby affecting the use effect. The biological safety cabinet control method comprises the following steps: determining the opening and closing states of the door body and the exhaust port of the biological safety cabinet; and determining the working state of the biological safety cabinet according to the opening and closing states of the door body and the exhaust port. The present application can reduce the cost of detecting the inflow wind speed of the biological safety cabinet, and the whole detection accuracy is high, thereby further improving the user experience.

Description

Technical Field

[0001] This invention belongs to the field of biosafety technology, specifically relating to a biosafety cabinet control method, a biosafety cabinet, and a storage medium. Background Technology

[0002] Biosafety cabinets are designed to protect the operator, laboratory environment, and experimental materials from infectious aerosols and splashes generated during the handling of primary cultures, bacterial and viral strains, and diagnostic specimens. They are widely used in medical and health fields, disease prevention and control, food hygiene, biopharmaceuticals, environmental monitoring, and various biological laboratories, serving as a crucial foundation for ensuring biosafety and environmental safety.

[0003] Currently, given the hazardous operating environment of biosafety cabinets, performance testing of their overall operation is required during installation and at regular intervals thereafter. Typically, this involves using an anemometer to monitor the inflow airflow into the biosafety cabinet and determine whether the airflow meets safety standards.

[0004] However, existing methods for monitoring the inflow air velocity in biosafety cabinets, which use sensors, are costly and have low accuracy, thus reducing the user experience. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the existing technology, namely the high cost and low accuracy of monitoring wind speed in biosafety cabinets, which affects the effectiveness of use.

[0006] The first aspect of this invention provides a biosafety cabinet control method, comprising:

[0007] Determine the opening and closing status of the biosafety cabinet door and exhaust vent;

[0008] The working status of the biosafety cabinet is determined by the opening and closing status of the door and the exhaust vent.

[0009] In the preferred technical solution of the above-mentioned biosafety cabinet control method, determining the opening and closing states of the biosafety cabinet door and exhaust vent specifically includes:

[0010] The opening and closing status of the biosafety cabinet door is determined by the travel sensors on the door.

[0011] The opening and closing status of the exhaust vent is determined by the travel sensor at the exhaust vent of the biosafety cabinet.

[0012] In the preferred technical solution of the above-mentioned biosafety cabinet control method, the working state of the biosafety cabinet is determined according to the opening and closing state of the door and the opening and closing state of the exhaust vent, specifically including:

[0013] The airflow speed entering the biosafety cabinet is determined based on the opening and closing status of the door and the exhaust vent.

[0014] Determine the working status of the biosafety cabinet based on wind speed.

[0015] In the preferred technical solution of the above-mentioned biosafety cabinet control method, the airflow velocity entering the biosafety cabinet is determined based on the opening and closing status of the door and the opening and closing status of the exhaust vent, specifically including:

[0016] When the door is open and the exhaust vent is closed, the wind speed is determined to be less than the first preset wind speed.

[0017] When the door is open and the exhaust vent is in the first open position, the wind speed is determined to be greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed.

[0018] When the door is open and the exhaust vent is in the second open position, the wind speed is determined to be greater than the second preset wind speed, wherein the first preset wind speed is less than the second preset wind speed, and the opening angle corresponding to the second open position is greater than the opening angle corresponding to the first open position.

[0019] In the preferred technical solution of the above-mentioned biosafety cabinet control method, determining the working status of the biosafety cabinet based on the wind speed specifically includes:

[0020] When the wind speed is less than the first preset wind speed or greater than the second preset wind speed, the biosafety cabinet is judged to be in an abnormal state.

[0021] When the wind speed is greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed, the biosafety cabinet is judged to be in normal condition.

[0022] A second aspect of the present invention provides a biosafety cabinet, comprising:

[0023] The module determines the open / closed status of the biosafety cabinet door and exhaust vents.

[0024] The control module is used to determine the working status of the biosafety cabinet based on the opening and closing status of the door and the air vent.

[0025] A third aspect of the present invention provides a storage medium storing computer program instructions, which, when executed by a processor, implement the above-described biosafety cabinet control method.

[0026] The fourth aspect of the present invention provides a biosafety cabinet, including a cabinet body and multiple travel sensors. The first end of the cabinet body is provided with a door, and the second end of the cabinet body is provided with an exhaust vent. The door body is configured to allow outside gas to enter the cabinet body by opening and closing on its own.

[0027] One of the multiple travel sensors is installed on the door to monitor the opening and closing status of the door, and another of the multiple travel sensors is installed at the exhaust vent to monitor the opening and closing status of the exhaust vent.

[0028] The enclosure is also equipped with an air vent that connects to the outside. The air vent is configured so that when the exhaust vent is closed, the gas inside the enclosure flows to the outside through the air vent.

[0029] In the preferred technical solution of the above-mentioned biosafety cabinet, a cover plate is also included. The cover plate is rotatably located at the exhaust port. The cover plate is configured to allow the gas inside the cabinet to be discharged to the outside by opening and closing on its own.

[0030] The multiple travel sensors include a first travel sensor, a second travel sensor, and a third travel sensor. The first travel sensor is installed on the door body, and the second and third travel sensors are respectively installed at opposite ends of the cover plate.

[0031] In the preferred technical solution of the above-mentioned biosafety cabinet, the first stroke sensor includes a first magnetic element and a first magnetic switch. The first magnetic element is disposed on the door, and the first magnetic switch is disposed on the cabinet near the door. The first magnetic switch is configured to detect the opening and closing state of the door by means of the change in distance between the first magnetic element and the first magnetic switch.

[0032] The second stroke sensor includes a second magnetic element and a second magnetic switch. The second magnetic element is disposed at the first end of the cover plate, and the second magnetic switch is disposed on the housing near the first end of the cover plate. The second magnetic switch is configured to detect the opening and closing state of the cover plate by means of the change in distance between the second magnetic element and the second magnetic switch.

[0033] The third stroke sensor includes a third magnetic element and a third magnetic switch. The third magnetic element is disposed at the second end of the cover plate, and the third magnetic switch is disposed on the housing near the second end of the cover plate. The third magnetic switch is configured to detect the opening angle of the cover plate by means of the change in distance between the third magnetic element and the third magnetic switch.

[0034] Those skilled in the art will understand that the biosafety cabinet control method, biosafety cabinet, and storage medium provided by the present invention include a storage medium storing computer program instructions, which, when executed by a processor, implement the aforementioned biosafety cabinet control method. The biosafety cabinet includes a cabinet body and multiple travel sensors. A door is located at the first end of the cabinet body, and an exhaust vent is located at the second end. The door is configured to allow external gas to enter the cabinet body by opening and closing. One of the multiple travel sensors is located on the door to monitor its opening and closing state, and another is located at the exhaust vent to monitor its opening and closing state. The cabinet body also has a vent connected to the outside. The vent is configured to allow gas inside the cabinet to flow to the outside when the exhaust vent is closed. The biosafety cabinet includes: a determination module for determining the opening and closing states of the door and exhaust vent; and a control module for determining the operating state of the biosafety cabinet based on the opening and closing states of the door and exhaust vent. The biosafety cabinet control method includes: determining the opening and closing status of the biosafety cabinet door and exhaust vent; and determining the working status of the biosafety cabinet based on the opening and closing status of the door and exhaust vent.

[0035] The above method, which involves first determining the opening and closing status of the door and exhaust vents, and then determining the working status of the biosafety cabinet based on their respective opening and closing statuses, can reduce the cost of detecting the inflow air velocity of the biosafety cabinet, facilitate long-term use, and has high overall detection accuracy, further improving the user experience. Attached Figure Description

[0036] Preferred embodiments of the biosafety cabinet control method, biosafety cabinet, and storage medium of the present invention will now be described with reference to the accompanying drawings. The drawings are as follows:

[0037] Figure 1 This is a flowchart illustrating the first biosafety cabinet control method provided in this application embodiment;

[0038] Figure 2 This is a flowchart illustrating the second biosafety cabinet control method provided in the embodiments of this application;

[0039] Figure 3 This is a flowchart illustrating the third biosafety cabinet control method provided in the embodiments of this application;

[0040] Figure 4 This is a flowchart illustrating the fourth biosafety cabinet control method provided in the embodiments of this application;

[0041] Figure 5 This is a flowchart illustrating the fifth biosafety cabinet control method provided in the embodiments of this application;

[0042] Figure 6 This is a schematic diagram of the structure of the first type of biosafety cabinet provided in the embodiments of this application;

[0043] Figure 7 This is a schematic diagram of the structure of the second type of biosafety cabinet provided in the embodiments of this application in its first state;

[0044] Figure 8 This is a schematic diagram of the structure of the second type of biosafety cabinet in the second state provided in the embodiments of this application;

[0045] Figure 9 This is a structural schematic diagram of the third state of the second type of biosafety cabinet provided in the embodiments of this application;

[0046] Figure 10 This is a structural schematic diagram of the fourth state of the second type of biosafety cabinet provided in the embodiments of this application;

[0047] Figure 11 This is a side view of the second type of biosafety cabinet provided in the embodiments of this application;

[0048] Figure 12 This is a top view of the second type of biosafety cabinet provided in the embodiments of this application;

[0049] Figure 13 This is a schematic diagram of the first state of the cover plate in the second type of biosafety cabinet provided in the embodiments of this application;

[0050] Figure 14 This is a schematic diagram of the second state of the cover plate in the second type of biosafety cabinet provided in the embodiments of this application;

[0051] Figure 15 This is a structural schematic diagram of the cover plate in the third state of the second type of biosafety cabinet provided in the embodiments of this application.

[0052] Explanation of reference numerals in the attached figures:

[0053] 100, 200 - Biosafety cabinets;

[0054] 110 - Determine the module;

[0055] 120 - Control Module;

[0056] 210 - Enclosure;

[0057] 211-Gate body;

[0058] 212 - Exhaust vent;

[0059] 213 - Air vent;

[0060] 220 - Cover plate;

[0061] 230 - First stroke sensor;

[0062] 231 - First magnetic component;

[0063] 232 - First magnetic switch;

[0064] 240 - Second stroke sensor;

[0065] 241 - Second magnetic component;

[0066] 242 - Second magnetic switch;

[0067] 250 - Third stroke sensor;

[0068] 251 - Third magnetic component;

[0069] 252 - Third magnetic switch. Detailed Implementation

[0070] Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0071] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0072] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0073] It should be understood that although the terms first, second, third, etc., may be used in this document to describe various types of information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, can be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "one," and "the" are intended to also include the plural forms unless the context indicates otherwise.

[0074] It should be further understood that the terms “comprising” or “including” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups.

[0075] The terms “or,” “and / or,” and “including at least one of the following” as used in this application may be interpreted as inclusive, or mean any one or any combination thereof. For example, “including at least one of the following: A, B, C” means “any one of the following: A; B; C; A and B; A and C; B and C; A and B and C”, or “A, B or C” or “A, B and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A and B and C”. Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0076] Currently, given the hazardous operating environment of biosafety cabinets, performance testing of their overall operation is required during installation and at regular intervals thereafter. Typically, this is done by using anemometers to monitor the inflow airflow velocity and determine if it meets safety standards. However, current methods for monitoring inflow airflow velocity in biosafety cabinets using sensors are costly and have low accuracy, thus reducing user experience.

[0077] To address the aforementioned issues, this invention provides a biosafety cabinet control method, a biosafety cabinet, and a storage medium. The method involves first determining the open / closed state of the door and exhaust vents, and then determining the operating state of the biosafety cabinet based on these states. This reduces the cost of detecting the inflow air velocity within the biosafety cabinet, facilitates long-term use, and offers high overall detection accuracy, further enhancing the user experience.

[0078] The preferred technical solutions for the biosafety cabinet control method, biosafety cabinet, and storage medium of the present invention are described below with reference to the accompanying drawings.

[0079] Example 1

[0080] Figure 1 This is a flowchart illustrating the first biosafety cabinet control method provided in this application embodiment, as shown below. Figure 1 As shown in the figure, this application provides a biosafety cabinet control method, including:

[0081] S101: Determine the opening and closing status of the biosafety cabinet door and exhaust vent.

[0082] It should be noted that the opening and closing state of the biosafety cabinet door can include both closed and open states.

[0083] Accordingly, the opening and closing state of the exhaust vent can include a closed state and an open state.

[0084] In addition, it should be noted that when the biosafety cabinet door is open, outside air can enter the biosafety cabinet. Some of this air will circulate internally, while a small portion will be exhausted to the outside through the exhaust vent. In other words, the exhaust vent is open at this time.

[0085] S102: Determine the working status of the biosafety cabinet based on the opening and closing status of the door and the exhaust vent.

[0086] It should be noted that the open and closed states of the door and the air vents determine the working status of the biosafety cabinet.

[0087] The working status of the biosafety cabinet can include normal working status and abnormal working status. When the working status of the biosafety cabinet is determined to be abnormal, an alarm will be triggered to remind the user.

[0088] Additionally, it should be noted that the alarm method can be one or both of sound and light. The specific method is not limited in this embodiment of the application, as long as it can serve the alarm function.

[0089] Those skilled in the art will understand that this method can reduce the cost of detecting the inflow velocity of a biosafety cabinet, facilitate long-term use, and provide high overall detection accuracy, further improving the user experience.

[0090] Figure 2 This is a flowchart illustrating the second biosafety cabinet control method provided in this application embodiment, as shown below. Figure 2 As shown, in some optional implementations, determining the open / closed state of the biosafety cabinet door and exhaust vent specifically includes:

[0091] S201: Determine the opening and closing status of the biosafety cabinet door based on the travel sensor on the door.

[0092] Understandably, the open or closed state of the biosafety cabinet is determined by a travel sensor installed on the door.

[0093] In some examples, the location of the travel sensor can be adjusted according to the actual situation.

[0094] For example, the travel sensor can be set at any position on the door of the biosafety cabinet. The specific position is not limited in this embodiment of the application, as long as it can be used to monitor the opening and closing status of the biosafety cabinet door.

[0095] Furthermore, it should be noted that the stroke sensor disclosed in this application embodiment can adopt an existing structure or a magnetic switch. Specifically, this application embodiment will not impose any further limitations here.

[0096] S202: Determine the opening and closing status of the exhaust vent based on the travel sensor of the exhaust vent of the biosafety cabinet.

[0097] It is understandable that the open or closed state of the exhaust vent is determined by a stroke sensor installed at the exhaust vent.

[0098] In some examples, the location of the travel sensor can be adjusted according to the actual situation.

[0099] For example, the stroke sensor can be set near the exhaust vent or at any location far from the exhaust vent. The specific location is not limited in this embodiment of the application, as long as it can be used to monitor the opening and closing status of the exhaust vent.

[0100] Furthermore, it should be noted that the stroke sensor disclosed in this application embodiment can adopt an existing structure or a magnetic switch. Specifically, this application embodiment will not impose any further limitations here.

[0101] Figure 3 This is a flowchart illustrating the third biosafety cabinet control method provided in this application embodiment, as shown below. Figure 3 As shown, in some optional implementations, the operating status of the biosafety cabinet is determined based on the opening and closing status of the door and the opening and closing status of the exhaust vent, specifically including:

[0102] S301: Determine the airflow speed entering the biosafety cabinet based on the opening and closing status of the door and the exhaust vent.

[0103] It is understandable that the wind speed of the airflow entering through the door is determined by combining the opening and closing status of the door and the opening and closing status of the exhaust vent.

[0104] In addition, the airflow is the airflow from the outside into the biosafety cabinet.

[0105] S302: Determine the working status of the biosafety cabinet based on the wind speed.

[0106] Understandably, the working status of the biosafety cabinet is determined based on the wind speed; if the biosafety cabinet is determined to be in an abnormal working state, an alarm is triggered.

[0107] The alarm methods have already been described above and will not be elaborated on here.

[0108] Figure 4 This is a flowchart illustrating the fourth biosafety cabinet control method provided in this application embodiment, as shown below. Figure 4 As shown, in some optional embodiments, the airflow velocity entering the biosafety cabinet is determined based on the opening and closing status of the door and the exhaust vent, specifically including:

[0109] S401: When the door is open and the exhaust vent is closed, determine that the wind speed is less than the first preset wind speed.

[0110] It is understandable that when the door is open and the exhaust vent is closed, it means that the air velocity of the gas entering the biosafety cabinet is less than the first preset air velocity.

[0111] Additionally, it should be noted that when the door is closed, outside air cannot enter the biosafety cabinet through the door.

[0112] It should be noted that the first preset wind speed is a value obtained by the manufacturer through multiple experiments and can be stored in the biosafety cabinet's program for users to compare and control during use.

[0113] Of course, the specific values ​​can be adjusted according to the actual situation, and this application embodiment will not impose too many restrictions here.

[0114] S402: When the door is open and the exhaust vent is in the first open position, determine that the wind speed is greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed.

[0115] It is understandable that when the door is open, it means that outside air enters the biosafety cabinet, and when the exhaust vent is also open and in the first open position, it means that the wind speed of the incoming air is between the first preset wind speed and the second preset wind speed.

[0116] It should be noted that the second preset wind speed is a value obtained by the manufacturer through multiple experiments and can be stored in the biosafety cabinet's program for users to compare and control during use.

[0117] Of course, the specific values ​​can be adjusted according to the actual situation, and this application embodiment will not impose too many restrictions here.

[0118] S403: When the door is open and the exhaust vent is in the second open position, determine that the wind speed is greater than the second preset wind speed, wherein the first preset wind speed is less than the second preset wind speed, and the opening angle corresponding to the second open position is greater than the opening angle corresponding to the first open position.

[0119] It is understandable that when the door is open and the exhaust vent is also open, and the exhaust vent is in the second open position, it means that the wind speed of the incoming air is greater than the second preset wind speed.

[0120] Furthermore, the opening angle corresponding to the second opening position is greater than the opening angle corresponding to the first opening position, which means that when the exhaust vent is in the second opening position, it indicates that the wind speed of the incoming gas is too high.

[0121] Figure 5 This is a flowchart illustrating the fifth biosafety cabinet control method provided in this application embodiment, as shown below. Figure 5 As shown, in some optional implementations, the working status of the biosafety cabinet is determined based on the wind speed, specifically including:

[0122] S501: When the wind speed is less than the first preset wind speed or greater than the second preset wind speed, the biosafety cabinet is judged to be in an abnormal state.

[0123] Understandably, when the wind speed is less than the first preset wind speed, it means that the gas speed entering the biosafety cabinet is too low, and the biosafety cabinet is judged to be in an abnormal state.

[0124] Of course, if the wind speed is greater than the second preset wind speed, it means that the gas speed entering the biosafety cabinet is too high, and the biosafety cabinet is judged to be in an abnormal state.

[0125] In other words, whether the gas velocity entering the biosafety cabinet is too low or too high, it indicates that the biosafety cabinet is in an abnormal state.

[0126] S502: When the wind speed is greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed, the biosafety cabinet is judged to be in normal condition.

[0127] Of course, if the wind speed is between the first preset wind speed and the second preset wind speed, it means that the biosafety cabinet is in normal condition and no alarm needs to be triggered.

[0128] The biosafety cabinet control method provided in this application includes: determining the opening and closing status of the biosafety cabinet door and the exhaust vent; and determining the working status of the biosafety cabinet based on the opening and closing status of the door and the exhaust vent.

[0129] By first determining the opening and closing status of the door and exhaust vents, and then determining the working status of the biosafety cabinet based on their respective opening and closing statuses, this method can reduce the cost of detecting the inflow air velocity of the biosafety cabinet, facilitate long-term use, and has high overall detection accuracy, further improving the user experience.

[0130] Example 2

[0131] Figure 6 This is a structural schematic diagram of the first type of biosafety cabinet provided in the embodiments of this application, as shown below. Figure 6 As shown in the illustration, this application also provides a biosafety cabinet 100, comprising:

[0132] Module 110 is used to determine the open / closed status of the biosafety cabinet door and exhaust vent.

[0133] Specifically, module 110 is also specifically used for:

[0134] The opening and closing status of the biosafety cabinet door is determined by the travel sensor on the door; the opening and closing status of the exhaust vent is determined by the travel sensor on the exhaust vent.

[0135] The control module 120 is used to determine the working status of the biosafety cabinet based on the opening and closing status of the door and the opening and closing status of the exhaust vent.

[0136] Specifically, the control module 120 is also used for:

[0137] The airflow speed entering the biosafety cabinet is determined based on the opening and closing status of the door and the exhaust vent.

[0138] Determine the working status of the biosafety cabinet based on wind speed.

[0139] In addition, specifically, the control module 120 is also used for:

[0140] When the door is open and the exhaust vent is closed, the wind speed is determined to be less than the first preset wind speed.

[0141] When the door is open and the exhaust vent is in the first open position, the wind speed is determined to be greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed.

[0142] When the door is open and the exhaust vent is in the second open position, the wind speed is determined to be greater than the second preset wind speed, wherein the first preset wind speed is less than the second preset wind speed, and the opening angle corresponding to the second open position is greater than the opening angle corresponding to the first open position.

[0143] In addition, specifically, the control module 120 is also used for:

[0144] When the wind speed is less than the first preset wind speed or greater than the second preset wind speed, the biosafety cabinet is judged to be in an abnormal state.

[0145] When the wind speed is greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed, the biosafety cabinet is judged to be in normal condition.

[0146] The biosafety cabinet provided in this application includes: a determination module for determining the opening and closing status of the door and exhaust vent of the biosafety cabinet; and a control module for determining the working status of the biosafety cabinet based on the opening and closing status of the door and exhaust vent. This reduces the cost of detecting the inflow air velocity of the biosafety cabinet, facilitates long-term use, and provides high overall detection accuracy, further improving the user experience.

[0147] Example 3

[0148] This application embodiment also provides a storage medium storing computer program instructions, which, when executed by a processor, implement the aforementioned biosafety cabinet control method. The method includes:

[0149] Determine the opening and closing status of the biosafety cabinet door and exhaust vent;

[0150] The working status of the biosafety cabinet is determined by the opening and closing status of the door and the exhaust vent.

[0151] Storage medium refers to any type of memory device or storage device. The term "storage medium" is intended to include: mounting media, such as CD-ROMs, floppy disks, or magnetic tape devices; computer system memory or random access memory, such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memory, such as flash memory, magnetic media (e.g., hard disks or optical storage); registers or other similar types of memory elements. Storage medium may also include other types of memory or combinations thereof.

[0152] Alternatively, the storage medium can be located in a first computer system in which the program is executed, or it can be located in a different second computer system connected to the first computer system via a network (such as the Internet). The second computer system can provide program instructions to the first computer for execution.

[0153] The term "storage medium" can include two or more storage media that may reside in different locations (e.g., in different computer systems connected via a network). Storage media may store program instructions (e.g., specifically implemented as a computer program) that can be executed by one or more processors.

[0154] The storage medium provided in this application embodiment stores computer program instructions. When these computer program instructions are executed by a processor, they implement the aforementioned biosafety cabinet control method. This reduces the cost of detecting the inflow air velocity of the biosafety cabinet, facilitates long-term use, and provides high overall detection accuracy, further improving the user experience.

[0155] Example 4

[0156] Figure 7 This is a schematic diagram of the structure of the second type of biosafety cabinet provided in the embodiments of this application in its first state. Figure 8 This is a structural schematic diagram of the second state of the second type of biosafety cabinet provided in the embodiments of this application. Figure 9 This is a structural schematic diagram of the third state of the second type of biosafety cabinet provided in the embodiments of this application. Figure 10 This is a structural diagram of the fourth state of the second type of biosafety cabinet provided in the embodiments of this application. Figure 11 This is a side view of the second type of biosafety cabinet provided in this application embodiment. Figure 12 This is a top view of the second type of biosafety cabinet provided in the embodiments of this application. Figure 13 This is a schematic diagram of the first state of the cover plate in the second type of biosafety cabinet provided in the embodiments of this application. Figure 14 This is a structural schematic diagram of the second state of the cover plate in the second type of biosafety cabinet provided in the embodiments of this application. Figure 15 This is a structural schematic diagram of the cover plate in the third state of the second type of biosafety cabinet provided in the embodiments of this application.

[0157] like Figures 7 to 15 As shown, this application embodiment also provides a biosafety cabinet 200, including a cabinet body 210 and multiple travel sensors. The first end of the cabinet body 210 is provided with a door 211, and the second end of the cabinet body 210 is provided with an exhaust port 212. The door 211 is configured to allow external gas to enter the cabinet body 210 by opening and closing itself.

[0158] One of the multiple travel sensors is installed on the door 211 to monitor the opening and closing state of the door 211, and another of the multiple travel sensors is installed at the exhaust vent 212 to monitor the opening and closing state of the exhaust vent 212.

[0159] The housing 210 is also provided with an air vent 213, which is connected to the outside. The air vent 213 is configured so that when the exhaust port 212 is closed, the gas inside the housing 210 flows to the outside through the air vent 213.

[0160] It should be noted that the function of the air vent 213 is as follows: When the biosafety cabinet 200 is turned on and the door 211 is open, and the air velocity of the incoming gas is less than (nominal value -0.025m / s), the exhaust vent 212 is closed due to the low air velocity. At this time, the exhaust airflow can be discharged through the air vent 213, so that the biosafety cabinet 200 is kept under negative pressure and harmful gases inside the biosafety cabinet 200 are prevented from leaking.

[0161] It should be noted that the specific material of the housing 210 is not limited in this embodiment.

[0162] Of course, during manufacturing, the enclosure 210 can also be made of steel plate, plastic or synthetic materials, provided that the strength is guaranteed.

[0163] In addition, it should be noted that the shape of the box 210 is not limited in this embodiment. For example, the box 210 can be a regular shape such as a cuboid or a cylinder. Of course, the box 210 can also be other irregular shapes.

[0164] In some alternative implementations, the biosafety cabinet 200 also includes a cover 220, which is rotatably disposed at the exhaust vent 212 and is configured to allow gas inside the cabinet 210 to be exhausted to the outside by opening and closing itself.

[0165] In other words, when the cover 220 is open, the exhaust vent 212 is in the open state, and when the cover 220 is closed, the exhaust vent 212 is in the closed state.

[0166] Multiple travel sensors include a first travel sensor 230, a second travel sensor 240, and a third travel sensor 250. The first travel sensor 230 is disposed on the door body 211, and the second travel sensor 240 and the third travel sensor 250 are respectively disposed at opposite ends of the cover plate 220.

[0167] It should be noted that the positions of the second stroke sensor 240 and the third stroke sensor 250 on the cover plate 220 can be adjusted according to the actual situation, and this embodiment of the application will not impose too many restrictions here.

[0168] In some alternative embodiments, the first travel sensor 230 includes a first magnetic element 231 and a first magnetic switch 232. The first magnetic element 231 is disposed on the door body 211, and the first magnetic switch 232 is disposed on the housing 210 near the door body 211. The first magnetic switch 232 is configured to detect the opening and closing state of the door body 211 by means of the change in distance between the first magnetic element 231 and the first magnetic switch 232.

[0169] In some examples, the first magnetic component 231 and the door body 211 are connected in a detachable manner, such as a snap-fit ​​structure or a screw-fit structure, which facilitates the subsequent disassembly and replacement of the first magnetic component 231. The specific installation method of the first magnetic component 231 is not limited.

[0170] Of course, in some examples, the first magnetic switch 232 and the housing 210 are connected in a detachable manner, such as a snap-fit ​​structure or a screw-fit structure, which makes it convenient to disassemble and replace the first magnetic switch 232 in the future. The specific installation method of the first magnetic switch 232 is not limited.

[0171] The second stroke sensor 240 includes a second magnetic element 241 and a second magnetic switch 242. The second magnetic element 241 is disposed at the first end of the cover plate 220, and the second magnetic switch 242 is disposed on the housing 210 near the first end of the cover plate 220. The second magnetic switch 242 is configured to detect the opening and closing state of the cover plate 220 by the change in distance between the second magnetic element 241 and the second magnetic switch 242.

[0172] In some examples, the second magnetic component 241 and the cover plate 220 are connected in a detachable manner, such as a snap-fit ​​structure or a screw-fit structure, which facilitates the subsequent disassembly and replacement of the second magnetic component 241. The specific installation method of the second magnetic component 241 is not limited.

[0173] Of course, in some examples, the second magnetic switch 242 and the housing 210 are connected in a detachable manner, such as a snap-fit ​​structure or a screw-fit structure, which makes it convenient to disassemble and replace the second magnetic switch 242 in the future. The specific installation method of the second magnetic switch 242 is not limited.

[0174] The third stroke sensor 250 includes a third magnetic element 251 and a third magnetic switch 252. The third magnetic element 251 is disposed at the second end of the cover plate 220, and the third magnetic switch 252 is disposed on the housing 210 near the second end of the cover plate 220. The third magnetic switch 252 is configured to detect the opening angle of the cover plate 220 by the change in distance between the third magnetic element 251 and the third magnetic switch 252.

[0175] In some examples, the third magnetic component 251 and the cover plate 220 are connected in a detachable manner, such as a snap-fit ​​structure or a screw-fit structure, which facilitates the subsequent disassembly and replacement of the third magnetic component 251. The specific installation method of the third magnetic component 251 is not limited.

[0176] Of course, in some examples, the third magnetic switch 252 and the housing 210 are connected in a detachable manner, such as a snap-fit ​​structure or a screw-fit structure, which makes it convenient to disassemble and replace the third magnetic switch 252 in the future. The specific installation method of the third magnetic switch 252 is not limited.

[0177] Furthermore, the first magnetic element 231, the second magnetic element 241, and the third magnetic element 251 can all be magnets. In particular, the embodiments of this application will not be limited in detail here.

[0178] The biosafety cabinet provided in this application includes a cabinet body and multiple travel sensors. The first end of the cabinet body has a door, and the second end of the cabinet body has an exhaust vent. The door is configured to allow outside gas to enter the cabinet body by opening and closing on its own. One of the multiple travel sensors is installed on the door to monitor the opening and closing state of the door, and another of the multiple travel sensors is installed at the exhaust vent to monitor the opening and closing state of the exhaust vent. The cabinet body also has an air guide vent that is connected to the outside. The air guide vent is configured so that when the exhaust vent is closed, the gas inside the cabinet flows to the outside through the air guide vent.

[0179] The embodiments of this application can reduce the cost of detecting the inflow air velocity of biosafety cabinets, which is beneficial for long-term use, and the overall detection accuracy is high, further improving the user experience.

[0180] The technical solution of the present invention has been described above with reference to 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 can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method of controlling a biological safety cabinet, characterized by, include: Determine the opening and closing status of the biosafety cabinet door and exhaust vent; When the door is open and the exhaust vent is closed, the wind speed is determined to be less than the first preset wind speed. When the door is open and the exhaust vent is in the first open position, the wind speed is determined to be greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed. When the door is in the open state and the exhaust vent is in the second open position, it is determined that the wind speed is greater than the second preset wind speed, wherein the first preset wind speed is less than the second preset wind speed, and the opening angle corresponding to the second open position is greater than the opening angle corresponding to the first open position. When the wind speed is less than the first preset wind speed or greater than the second preset wind speed, the biosafety cabinet is determined to be in an abnormal state. When the wind speed is greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed, the biosafety cabinet is determined to be in normal condition.

2. The biological safety cabinet control method of claim 1, wherein, Determining the opening and closing status of the biosafety cabinet door and exhaust vent specifically includes: The opening and closing status of the biosafety cabinet door is determined by the travel sensor on the door. The opening and closing status of the exhaust vent is determined by a travel sensor at the exhaust vent of the biosafety cabinet.

3. A biological safety cabinet characterized by, include: The module determines the open / closed status of the biosafety cabinet door and exhaust vents. The control module is used to determine the working status of the biosafety cabinet based on the opening and closing status of the door and the opening and closing status of the exhaust vent. When the door is open and the exhaust vent is closed, the wind speed is determined to be less than the first preset wind speed. When the door is open and the exhaust vent is in the first open position, the wind speed is determined to be greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed. When the door is in the open state and the exhaust vent is in the second open position, it is determined that the wind speed is greater than the second preset wind speed, wherein the first preset wind speed is less than the second preset wind speed, and the opening angle corresponding to the second open position is greater than the opening angle corresponding to the first open position. When the wind speed is less than the first preset wind speed or greater than the second preset wind speed, the biosafety cabinet is determined to be in an abnormal state. When the wind speed is greater than or equal to the first preset wind speed and less than or equal to the second preset wind speed, the biosafety cabinet is determined to be in normal condition.

4. A storage medium, characterized by The device stores computer program instructions that, when executed by a processor, implement the biosafety cabinet control method of claim 1 or 2.

5. A biological safety cabinet for implementing the biological safety cabinet control method according to claim 1 or 2, characterized by, It includes a housing and multiple travel sensors. The housing has a door at the first end and an exhaust vent at the second end. The door is configured to allow outside air to enter the housing by opening and closing on its own. One of the plurality of travel sensors is disposed on the door body to monitor the opening and closing state of the door body, and another of the plurality of travel sensors is disposed at the exhaust vent to monitor the opening and closing state of the exhaust vent. The housing is also provided with an air vent, which is connected to the outside. The air vent is configured so that when the exhaust port is closed, the gas inside the housing flows to the outside through the air vent.

6. The biological safety cabinet of claim 5, wherein, It also includes a cover plate, which is rotatably disposed at the exhaust port and is configured to allow gas inside the box to be discharged to the outside by opening and closing itself; The plurality of travel sensors include a first travel sensor, a second travel sensor, and a third travel sensor. The first travel sensor is disposed on the door body, and the second travel sensor and the third travel sensor are respectively disposed at opposite ends of the cover plate.

7. The biological safety cabinet of claim 6, wherein, The first travel sensor includes a first magnetic element and a first magnetic switch. The first magnetic element is disposed on the door body, and the first magnetic switch is disposed on the housing near the door body. The first magnetic switch is configured to detect the opening and closing state of the door body by means of the change in distance between the first magnetic element and the first magnetic switch. The second stroke sensor includes a second magnetic element and a second magnetic switch. The second magnetic element is disposed at the first end of the cover plate, and the second magnetic switch is disposed on the housing near the first end of the cover plate. The second magnetic switch is configured to detect the opening and closing state of the cover plate by means of the change in distance between the second magnetic element and the second magnetic switch. The third stroke sensor includes a third magnetic element and a third magnetic switch. The third magnetic element is disposed at the second end of the cover plate, and the third magnetic switch is disposed on the housing near the second end of the cover plate. The third magnetic switch is configured to detect the opening angle of the cover plate by means of the change in distance between the third magnetic element and the third magnetic switch.

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