A medical laboratory ventilation energy-saving automatic control system and method thereof

Abstract

The invention discloses a ventilation energy-saving automatic control system for medical laboratories, which belongs to the field of ventilation control technology. The system of the invention includes: a monitoring module to obtain real-time images; a regional division module to divide the experimental area and the non-experimental area; a gas monitoring module to obtain a first data set and a second data set; a personnel analysis module to analyze the number and real-time position of experimental personnel and determine whether they are abnormal personnel; a local ventilation control module to determine whether the local ventilation equipment is turned on and the wind speed to be adjusted; a full-room ventilation control module to determine whether the local ventilation equipment in each experimental area is turned on and the exhaust air volume and air supply volume to be adjusted. The invention determines the timing of turning on local ventilation and adjusting the wind speed according to the concentration of harmful gases in each experimental area, and at the same time determines the timing of turning on full-room ventilation and adjusting the exhaust air volume according to the concentration of harmful gases in the indoor personnel, abnormal personnel and non-experimental areas, and then adjusts the air supply volume according to the total exhaust air volume, thereby achieving both indoor safety and energy-saving effects.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation control, in particular to a medical laboratory ventilation energy-saving automatic control system and method thereof. Background Art

[0002] The ventilation system of a medical laboratory is an important facility to ensure the safety of the experimental environment, control pollutant emissions, and maintain the health of experimental personnel.

[0003] The laboratory's ventilation system generally includes full-room ventilation and local ventilation. The function of full-room ventilation is to maintain the indoor air quality by introducing fresh air from outside and expelling polluted air from the room. At the same time, it maintains a positive or negative pressure environment according to the laboratory's safety level and functional requirements. The main function of local ventilation is to capture harmful gases and other pollutants directly at the source and reduce the concentration of pollutants in the laboratory.

[0004] Therefore, in the daily operation of the laboratory, full-room ventilation and local ventilation are indispensable. Since the operation of full-room ventilation and local ventilation will bring about greater energy consumption, it is necessary to perform energy-saving control under the premise of ensuring safety. Therefore, the present invention proposes a medical laboratory ventilation energy-saving automatic control system and method. Summary of the invention

[0005] In order to solve the technical problems existing in the prior art, the present invention provides a medical laboratory ventilation energy-saving automatic control system, comprising:

[0006] Ventilation systems, monitoring systems and control systems;

[0007] The ventilation system includes whole-room ventilation equipment and a number of local ventilation equipment;

[0008] The monitoring system includes a monitoring module, a region division module, a gas monitoring module and a personnel analysis module;

[0009] The monitoring module is used to obtain real-time images in the laboratory;

[0010] The area division module is used to divide the experimental area and the non-experimental area according to the setting position of each local ventilation device;

[0011] The gas monitoring module is used to obtain a first data set and a second data set, wherein the first data set includes the concentration and maintenance time of harmful gases in non-experimental areas monitored in real time, and the second data set includes the concentration and maintenance time of harmful gases in each experimental area monitored in real time;

[0012] The personnel analysis module is used to analyze the number and real-time location of the experimenters in the laboratory through the real-time image, and to analyze the behavior of the experimenters to determine whether they are abnormal personnel;

[0013] The control system includes a local ventilation control module and a whole-room ventilation control module;

[0014] The local ventilation control module is used to determine whether the local ventilation equipment in each experimental area is turned on and the wind speed that needs to be adjusted according to the second data set;

[0015] The whole-room ventilation control module is used to determine whether the whole-room ventilation equipment is turned on and the exhaust air volume and supply air volume that need to be adjusted according to the first data set and the number of experimenters and abnormal conditions.

[0016] Furthermore, the personnel analysis module includes:

[0017] The quantity and location analysis module is used to analyze the quantity and real-time location of laboratory personnel in the laboratory;

[0018] The behavior analysis module is used to analyze the nose-covering behavior and gait of the experimenter and determine whether the corresponding experimenter is an abnormal person.

[0019] Furthermore, the behavior analysis module determines whether the corresponding experimenter is an abnormal person, specifically:

[0020] If the subject covers his nose and the duration is greater than or equal to the preset nose-covering time, and / or has an abnormal gait, the corresponding subject is judged as an abnormal person.

[0021] Furthermore, the local ventilation control module includes:

[0022] A local judgment start module is used to judge whether the local ventilation equipment in the corresponding experimental area meets the preset self-starting local ventilation conditions. If yes, the local ventilation equipment in the corresponding experimental area is started;

[0023] The local judgment and adjustment module adjusts the wind speed of the local ventilation equipment in the corresponding experimental area.

[0024] Furthermore, the preset self-starting local ventilation conditions are specifically:

[0025] The concentration of harmful gases in the corresponding experimental area is greater than or equal to the first preset concentration threshold and there are experimental personnel in the corresponding experimental area, or the concentration of harmful gases in the corresponding experimental area is greater than or equal to the first preset concentration threshold and the maintenance time is greater than or equal to the first preset time threshold, or the concentration of harmful gases in the corresponding experimental area is greater than or equal to the second preset concentration threshold;

[0026] The first preset concentration threshold is smaller than the second preset concentration threshold.

[0027] Furthermore, the wind speed of the local ventilation equipment in the corresponding experimental area is adjusted as follows:

[0028] If the concentration of harmful gases in the corresponding experimental area is less than or equal to the second preset concentration threshold, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding minimum effective capture wind speed;

[0029] If the concentration of harmful gases in the corresponding experimental area is greater than the second preset concentration threshold, the corresponding predicted wind speed is calculated by the trained wind speed prediction model, and the wind speed of the corresponding local ventilation equipment is adjusted to the predicted wind speed; if the predicted wind speed is greater than the maximum effective capture wind speed of the corresponding local ventilation equipment, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding maximum effective capture wind speed.

[0030] Furthermore, the whole room ventilation control module includes:

[0031] The whole room judgment start module is used to judge whether the whole room ventilation equipment meets the preset self-start whole room ventilation conditions. If so, the whole room ventilation equipment is turned on;

[0032] An exhaust air volume adjustment module is used to adjust the exhaust air volume of the whole room ventilation equipment;

[0033] The air supply volume adjustment module is used to adaptively adjust the air supply volume of the whole-room ventilation equipment according to the total exhaust volume of the local ventilation equipment and the exhaust volume of the whole-room ventilation equipment and the preset pressure environment of the laboratory.

[0034] Furthermore, the preset self-starting full-room ventilation conditions are specifically:

[0035] There are experimenters in the laboratory and their stay time is greater than or equal to the preset stay threshold, or the concentration of harmful gases in the non-experimental area is greater than the fourth preset concentration threshold.

[0036] Furthermore, the exhaust volume adjustment module adjusts the exhaust volume of the whole room ventilation equipment, specifically:

[0037] If the concentration of harmful gases in the non-experimental area is greater than or equal to the third preset concentration threshold, and / or the ratio of the number of abnormal personnel to the total number of personnel in the room is greater than or equal to the preset ratio, the exhaust volume of the ventilation equipment in the entire room is increased.

[0038] The present invention also provides a medical laboratory ventilation energy-saving automatic control method, comprising the following steps:

[0039] S1. Obtain real-time images in the laboratory and divide the experimental area and non-experimental area according to the location of each local ventilation device;

[0040] S2. Real-time analysis of the number of people in the laboratory, their corresponding real-time locations, and abnormal behaviors, while real-time monitoring of the concentration of harmful gases in each experimental area and non-experimental area and the corresponding maintenance time;

[0041] S3. Determine whether to turn on the whole room ventilation equipment and the local ventilation equipment in each experimental area;

[0042] S4. Adjust the wind speed of the local ventilation equipment in the corresponding experimental area; adjust the exhaust volume of the whole room ventilation equipment;

[0043] S5. Adaptively adjust the air supply volume of the whole-room ventilation equipment according to the preset pressure environment of the laboratory, the total exhaust volume of the local ventilation equipment and the exhaust volume of the whole-room ventilation equipment.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The present invention divides the experimental area and the non-experimental area, separately detects the concentration and maintenance time of harmful gases in each area, controls each local ventilation device to adaptively open and adjust the wind speed, discharges harmful gases in time, and avoids diffusion that requires the whole-room ventilation device to increase the power for ventilation. At the same time, according to the concentration of harmful gases in the non-experimental area and the number of people in the room, the adaptive opening of the whole-room ventilation device is controlled to further improve the energy-saving effect. While monitoring the concentration of harmful gases in the non-experimental area, the abnormal behavior analysis of the experimenters is added, and the exhaust volume of the whole-room ventilation device is adjusted. The air supply volume is adjusted according to the total exhaust volume to maintain the required pressure environment, thereby improving the energy-saving effect while ensuring that the indoor safety requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] Figure 1 It is a structural block diagram of the medical laboratory ventilation energy-saving automatic control system of the present invention;

[0049] Figure 2 It is a structural block diagram of a personnel analysis module of the medical laboratory ventilation energy-saving automatic control system of the present invention;

[0050] Figure 3 It is a structural block diagram of a local ventilation control module of the medical laboratory ventilation energy-saving automatic control system of the present invention;

[0051] Figure 4It is a structural block diagram of the whole room ventilation control module of the medical laboratory ventilation energy-saving automatic control system of the present invention;

[0052] Figure 5 It is a flow chart of the medical laboratory ventilation energy-saving automatic control method of the present invention. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] See also Figure 1 As shown, the present invention provides a medical laboratory ventilation energy-saving automatic control system, comprising:

[0057] A ventilation system, a monitoring system, a control system and a central processing unit, wherein the central processing unit is communicatively connected with the ventilation system, the monitoring system and the control system.

[0058] The ventilation system includes: whole-room ventilation equipment and a plurality of local ventilation equipment.

[0059] The function of the whole room ventilation equipment is to maintain the indoor air quality by introducing fresh air from outside and exhausting the indoor dirty air, while maintaining a positive or negative pressure environment according to the safety level and functional requirements of the laboratory. The main function of the local ventilation equipment is to capture pollutants such as harmful gases directly at the source and discharge them directly to the outside through dedicated pipes, thereby reducing the concentration of pollutants in the laboratory, effectively controlling the pollution in specific areas, avoiding the spread of pollutants in the laboratory, and reducing mutual interference between experiments.

[0060] The installation positions of the whole-room ventilation equipment and the local ventilation equipment should avoid the fresh air introduced by the whole-room ventilation equipment from impacting the exhaust port of the local ventilation equipment, causing turbulence or backflow; and minimize the interference of whole-room ventilation on the effectiveness of local ventilation.

[0061] The local ventilation equipment includes fume hoods and exhaust hoods, etc., which are installed and set according to needs.

[0062] The local ventilation equipment has a corresponding minimum capture wind speed and a maximum capture wind speed.

[0063] The monitoring system includes: a monitoring module, a region division module, a gas monitoring module and a personnel analysis module.

[0064] The monitoring module is used to obtain real-time images in the laboratory.

[0065] The area division module is used to divide the experimental area and the non-experimental area according to the setting position of each local ventilation device, and each local ventilation device corresponds to an experimental area.

[0066] The gas monitoring module is used to obtain a first data set and a second data set, wherein the first data set includes the concentration and maintenance time of harmful gases in non-experimental areas monitored in real time, and the second data set includes the concentration and maintenance time of harmful gases in each experimental area monitored in real time;

[0067] Specifically, the concentration and maintenance time of harmful gases in each experimental area are monitored by gas sensors set in each experimental area, and the concentration and maintenance time of harmful gases in non-experimental areas are monitored by several gas sensors set in non-experimental areas.

[0068] See also Figure 2 As shown, the personnel analysis module includes a quantity and location analysis module and a behavior analysis module.

[0069] The quantity and position analysis module is used to analyze the quantity and real-time position of the experimenters in the laboratory through the real-time image;

[0070] Specifically: human bodies are detected in the image frames of real-time images through the trained human recognition model, and then the DeepSORT algorithm is used to track human bodies between consecutive image frames. The number of people and their corresponding real-time positions are counted based on the tracking results.

[0071] The behavior analysis module is used to analyze the nose-covering behavior and gait of the experimenters in the laboratory through the real-time image, and determine whether the corresponding experimenters are abnormal persons.

[0072] Although experimenters usually wear masks for protection, when the concentration of harmful gases is too high, they may also cover their noses. If the impact is severe, they will experience dizziness and abnormal gait. The gait characteristics of abnormal gait may include irregular gait cycles, significantly longer or shorter cycle time, or large differences between cycles; stride length is too short or too long; step width is too wide or too narrow, etc.

[0073] The behavior analysis module analyzes the experimenter's nose covering behavior, specifically:

[0074] The pre-trained action recognition model is used to analyze the hand movements of the experimenter to determine whether the action is nose covering. The action recognition model is trained with a large amount of sample data of nose covering action pictures;

[0075] The behavior analysis module analyzes the gait of the experimenter, specifically:

[0076] Key point detection: through human key point recognition technology, such as OpenPose, the leg joints of the experimenter are continuously identified as key point sequences;

[0077] Gait feature extraction, based on the key point sequence, extracts features such as gait cycle, step length and step width;

[0078] Through the pre-trained gait recognition model, whether the corresponding experimenter has gait abnormality is identified according to the gait characteristics, and the results of the experimenter with gait abnormality are output; the gait recognition model is a classification or regression model based on deep learning.

[0079] The behavior analysis module determines whether the corresponding experimenter is an abnormal person, specifically:

[0080] If the subject covers his nose and the duration is greater than or equal to the preset nose-covering time, and / or has an abnormal gait, the corresponding subject is judged as an abnormal person.

[0081] The control system includes: a local ventilation control module and a whole-room ventilation control module.

[0082] The local ventilation control module is used to determine whether the local ventilation equipment in each experimental area is turned on and the wind speed that needs to be adjusted according to the second data set;

[0083] See also Figure 3 As shown, the local ventilation control module includes: a local judgment start module and a local judgment adjustment module.

[0084] The local judgment start module is used to judge whether the local ventilation equipment in the corresponding experimental area meets the preset self-starting local ventilation conditions based on the harmful gas concentration and maintenance time in each experimental area and the real-time location of the experimenters. If so, the local ventilation equipment in the corresponding experimental area is turned on.

[0085] The preset self-starting local ventilation conditions are specifically:

[0086] The concentration of harmful gases in the corresponding experimental area is greater than or equal to the first preset concentration threshold and there are experimental personnel in the corresponding experimental area, or the concentration of harmful gases in the corresponding experimental area is greater than or equal to the first preset concentration threshold and the maintenance time is greater than or equal to the first preset time threshold, or the concentration of harmful gases in the corresponding experimental area is greater than or equal to the second preset concentration threshold, and the first preset concentration threshold is less than the second preset concentration threshold.

[0087] The local judgment and adjustment module is used to adjust the wind speed of the local ventilation equipment in the corresponding experimental area according to the concentration of harmful gases in each experimental area;

[0088] Specifically:

[0089] If the concentration of harmful gases in the corresponding experimental area is less than or equal to the second preset concentration threshold, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding minimum effective capture wind speed;

[0090] If the concentration of harmful gases in the corresponding experimental area is greater than the second preset concentration threshold, the corresponding predicted wind speed is calculated by the trained wind speed prediction model, and the wind speed of the corresponding local ventilation equipment is adjusted to the predicted wind speed; if the predicted wind speed is greater than the maximum effective capture wind speed of the corresponding local ventilation equipment, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding maximum effective capture wind speed;

[0091] The wind speed prediction model is a deep learning model, which is obtained by training using historical harmful gas concentrations and corresponding adjusted historical wind speeds as training data.

[0092] The main function of local ventilation equipment is to capture harmful gases and other pollutants directly at the source. The wind speed of local ventilation equipment directly affects the exhaust volume. The basic formula is G=S*V*T*U, where G represents the exhaust volume, S represents the vent area, V represents the wind speed, T represents the time (generally calculated in hours), and U represents the safety factor. Increasing the wind speed will directly lead to an increase in the exhaust volume. Correspondingly, reducing the wind speed will reduce the exhaust volume. Too low a wind speed may cause leakage of harmful substances, and too high a wind speed may cause turbulence, reduce the protection effect, and increase energy consumption. Therefore, the local ventilation equipment has an effective capture wind speed range. The ventilation energy-saving automatic control system of the present invention adjusts the wind speed of the local ventilation equipment instead of directly adjusting the exhaust volume. It more accurately controls to ensure that harmful substances are effectively captured while achieving energy-saving purposes.

[0093] The whole room ventilation control module is used to determine whether the local ventilation equipment in each experimental area is turned on and the exhaust air volume and supply air volume that need to be adjusted according to the first data set and the number of experimenters and abnormal conditions;

[0094] See also Figure 4 As shown, the whole-room ventilation control module includes: a whole-room judgment start module, an exhaust volume adjustment module and a supply volume adjustment module.

[0095] The whole-room judgment start module is used to judge whether the whole-room ventilation equipment meets the preset self-starting whole-room ventilation conditions according to the harmful gas concentration in the non-experimental area and the number of people in the laboratory. If so, the whole-room ventilation equipment is turned on.

[0096] It should be noted that the initial supply air volume and initial exhaust air volume of the whole-room ventilation equipment are set according to the required pressure environment in the laboratory. If the laboratory requires positive pressure, the supply air volume should be equal to the total exhaust air volume plus the air volume required to maintain the positive pressure. If the laboratory requires negative pressure, the supply air volume should be less than the total exhaust air volume, and the difference is the air volume required to maintain the negative pressure.

[0097] The preset self-starting full-room ventilation conditions are specifically:

[0098] There are experimenters in the laboratory and their stay time is greater than or equal to the preset stay threshold, or the concentration of harmful gases in the non-experimental area is greater than the fourth preset concentration threshold.

[0099] The exhaust volume adjustment module is used to adjust the exhaust volume of the whole room ventilation equipment according to the concentration of harmful gases and the number of abnormal personnel in the non-experimental area;

[0100] Specifically:

[0101] If the concentration of harmful gases in the non-experimental area is greater than or equal to the third preset concentration threshold, and / or the ratio of the number of abnormal personnel to the total number of personnel in the room is greater than or equal to the preset ratio, the exhaust volume of the ventilation equipment in the entire room is increased.

[0102] On the contrary, as the concentration of harmful gases in non-experimental areas and the ratio of the number of abnormal personnel to the total number of personnel in the room decrease, the exhaust volume of the whole-room ventilation equipment is gradually reduced until it reaches the initial exhaust volume.

[0103] The air supply volume adjustment module is used to adaptively adjust the air supply volume of the whole-room ventilation equipment according to the total exhaust volume of the local ventilation equipment, the exhaust volume of the whole-room ventilation equipment and the preset pressure environment of the laboratory, and can be specifically matched and adjusted through the VAV system.

[0104] The exhaust volume can be obtained by installing air volume meters in the ventilation ducts of each ventilation device, and the exhaust volume of local ventilation equipment can also be calculated by the corresponding wind speed.

[0105] The VAV system can automatically adjust the air supply provided by the ventilation system according to changes in indoor pressure and indoor set parameters (such as temperature and humidity), thereby efficiently controlling and maintaining the comfort of the indoor environment while achieving the purpose of energy saving. The VAV system belongs to the existing technology, and the detailed matching adjustment principle is not described here.

[0106] See also Figure 5 As shown, the present invention also provides a medical laboratory ventilation energy-saving automatic control method, comprising the following steps:

[0107] S1. Obtain real-time images in the laboratory and divide the experimental area and non-experimental area according to the location of each local ventilation device;

[0108] S2. Real-time analysis of the number of people in the laboratory, their corresponding real-time locations, and abnormal behaviors, while real-time monitoring of the concentration of harmful gases in each experimental area and non-experimental area and the corresponding maintenance time;

[0109] S3. Determine whether to turn on the whole room ventilation equipment and the local ventilation equipment in each experimental area;

[0110] S4. Adjust the wind speed of the local ventilation equipment in the corresponding experimental area; adjust the exhaust volume of the whole room ventilation equipment;

[0111] S5. Adaptively adjust the air supply volume of the whole-room ventilation equipment according to the preset pressure environment of the laboratory, the total exhaust volume of the local ventilation equipment and the exhaust volume of the whole-room ventilation equipment.

[0112] In step S2, the number of people in the laboratory and their corresponding real-time positions are analyzed in real time. Specifically, human body detection is performed on the image frames of the real-time image through the trained human body recognition model, and then the DeepSORT algorithm is used to track the human body between consecutive image frames. The number of people and their corresponding real-time positions are counted based on the tracking results.

[0113] In step S2, analyzing abnormal behavior specifically includes the following steps:

[0114] S21. Analyze whether the experimenters have nose-covering behavior and / or abnormal gait;

[0115] S22. Subjects who cover their noses for a duration greater than or equal to the preset nose-covering time, and / or have abnormal gait are considered abnormal subjects.

[0116] In step S21, it is analyzed whether the experimenter has covered his nose. Specifically, the experimenter's hand movements are analyzed through a pre-trained action recognition model to determine whether it is the nose-covering behavior.

[0117] In step S21, it is analyzed whether the experimenter has gait abnormality, specifically: continuously identifying the leg joints of the experimenter as a key point sequence through human key point recognition technology; extracting features such as gait cycle, step length and step width based on the key point sequence; through a pre-trained gait recognition model, identifying whether the corresponding experimenter has gait abnormality according to gait characteristics.

[0118] In step S3, determine whether to turn on the local ventilation equipment of each experimental area, specifically: if the harmful gas concentration in the corresponding experimental area is greater than or equal to the first preset concentration threshold and there are experimental personnel in the corresponding experimental area, or the harmful gas concentration in the corresponding experimental area is greater than or equal to the first preset concentration threshold and the maintenance time is greater than or equal to the first preset time threshold, or the harmful gas concentration in the corresponding experimental area is greater than or equal to the second preset concentration threshold, turn on the local ventilation equipment in the corresponding experimental area.

[0119] In step S3, determine whether to turn on the whole-room ventilation equipment, specifically: monitor whether there are experimenters in the laboratory and the stay time is greater than or equal to the preset stay threshold, or whether the concentration of harmful gases in the non-experimental area is greater than the fourth preset concentration threshold. If so, turn on the whole-room ventilation equipment.

[0120] In step S4, the wind speed of the local ventilation equipment in the corresponding experimental area is adjusted, specifically:

[0121] If the concentration of the harmful gas is less than or equal to the second preset concentration threshold, the wind speed of the corresponding local ventilation device is adjusted to the corresponding minimum effective capture wind speed;

[0122] If the concentration of harmful gases is greater than the second preset concentration threshold, the corresponding predicted wind speed is calculated by the trained wind speed prediction model, and the wind speed of the corresponding local ventilation equipment is adjusted to the predicted wind speed; if the predicted wind speed is greater than the maximum effective capture wind speed of the corresponding local ventilation equipment, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding maximum effective capture wind speed.

[0123] In step S4, the exhaust volume of the whole-room ventilation equipment is adjusted, specifically: if the concentration of harmful gases in the non-experimental area is greater than or equal to the third preset concentration threshold, and / or the ratio of the number of abnormal personnel to the total number of personnel in the room is greater than or equal to the preset ratio, the exhaust volume of the whole-room ventilation equipment is increased.

[0124] The beneficial effects of the present invention are:

[0125] The present invention divides the experimental area and the non-experimental area, separately detects the concentration and maintenance time of harmful gases in each area, controls each local ventilation device to adaptively open and adjust the wind speed, discharges harmful gases in time, and avoids diffusion that requires the whole-room ventilation device to increase the power for ventilation. At the same time, according to the concentration of harmful gases in the non-experimental area and the number of people in the room, the adaptive opening of the whole-room ventilation device is controlled to further improve the energy-saving effect. While monitoring the concentration of harmful gases in the non-experimental area, the abnormal behavior analysis of the experimenters is added, and the exhaust volume of the whole-room ventilation device is adjusted. The air supply volume is adjusted according to the total exhaust volume to maintain the required pressure environment, thereby improving the energy-saving effect while ensuring that the indoor safety requirements are met.

[0126] In the description of the specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0127] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A medical laboratory ventilation energy-saving automatic control system, characterized in that: include: Ventilation systems, monitoring systems and control systems; The ventilation system includes whole-room ventilation equipment and a number of local ventilation equipment; The monitoring system includes a monitoring module, a region division module, a gas monitoring module and a personnel analysis module; The monitoring module is used to obtain real-time images in the laboratory; The area division module is used to divide the experimental area and the non-experimental area according to the setting position of each local ventilation device; The gas monitoring module is used to obtain a first data set and a second data set, wherein the first data set includes the concentration and maintenance time of harmful gases in non-experimental areas monitored in real time, and the second data set includes the concentration and maintenance time of harmful gases in each experimental area monitored in real time; The personnel analysis module is used to analyze the number and real-time location of the experimenters in the laboratory through the real-time image, and to analyze the behavior of the experimenters to determine whether they are abnormal personnel; The personnel analysis module includes: a quantity and position analysis module, which is used to analyze the quantity and real-time position of the experimenters in the laboratory; a behavior analysis module, which is used to analyze the nose-covering behavior and gait of the experimenters, and determine whether the corresponding experimenters are abnormal persons; The control system includes a local ventilation control module and a whole-room ventilation control module; The local ventilation control module is used to determine whether the local ventilation equipment in each experimental area is turned on and the wind speed that needs to be adjusted according to the second data set; The whole-room ventilation control module is used to determine whether the whole-room ventilation equipment is turned on and the exhaust air volume and supply air volume that need to be adjusted according to the first data set and the number of experimenters and abnormal conditions; The whole-room ventilation control module includes: a whole-room judgment start module, which is used to judge whether the whole-room ventilation equipment meets the preset self-start whole-room ventilation conditions, and if so, start the whole-room ventilation equipment; an exhaust volume adjustment module, which is used to adjust the exhaust volume of the whole-room ventilation equipment; an air supply volume adjustment module, which is used to adaptively adjust the air supply volume of the whole-room ventilation equipment according to the total exhaust volume of the local ventilation equipment and the exhaust volume of the whole-room ventilation equipment and the preset pressure environment of the laboratory; The preset self-starting full-room ventilation conditions are specifically: there are experimenters in the laboratory and the stay time is greater than or equal to the preset stay threshold, or the concentration of harmful gases in the non-experimental area is greater than the fourth preset concentration threshold; The exhaust volume adjustment module adjusts the exhaust volume of the whole-room ventilation equipment, specifically: if the concentration of harmful gases in the non-experimental area is greater than or equal to the third preset concentration threshold, and / or the ratio of the number of abnormal personnel to the total number of personnel in the room is greater than or equal to the preset ratio, the exhaust volume of the whole-room ventilation equipment is increased.

2. The medical laboratory ventilation energy-saving automatic control system according to claim 1 is characterized in that: The behavior analysis module determines whether the corresponding experimenter is an abnormal person, specifically: If the subject covers his nose and the duration is greater than or equal to the preset nose-covering time, and / or has an abnormal gait, the corresponding subject is judged as an abnormal person.

3. The medical laboratory ventilation energy-saving automatic control system according to claim 1 is characterized in that: The local ventilation control module comprises: A local judgment start module is used to judge whether the local ventilation equipment in the corresponding experimental area meets the preset self-starting local ventilation conditions. If yes, the local ventilation equipment in the corresponding experimental area is started; The local judgment and adjustment module adjusts the wind speed of the local ventilation equipment in the corresponding experimental area.

4. The medical laboratory ventilation energy-saving automatic control system according to claim 3 is characterized in that: The preset self-starting local ventilation conditions are specifically: The concentration of harmful gases in the corresponding experimental area is greater than or equal to the first preset concentration threshold and there are experimental personnel in the corresponding experimental area, or the concentration of harmful gases in the corresponding experimental area is greater than or equal to the first preset concentration threshold and the maintenance time is greater than or equal to the first preset time threshold, or the concentration of harmful gases in the corresponding experimental area is greater than or equal to the second preset concentration threshold; The first preset concentration threshold is smaller than the second preset concentration threshold.

5. The medical laboratory ventilation energy-saving automatic control system according to claim 4 is characterized in that: The wind speed adjustment of the local ventilation equipment in the corresponding experimental area is specifically as follows: If the concentration of harmful gases in the corresponding experimental area is less than or equal to the second preset concentration threshold, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding minimum effective capture wind speed; If the concentration of harmful gases in the corresponding experimental area is greater than the second preset concentration threshold, the corresponding predicted wind speed is calculated by the trained wind speed prediction model, and the wind speed of the corresponding local ventilation equipment is adjusted to the predicted wind speed; if the predicted wind speed is greater than the maximum effective capture wind speed of the corresponding local ventilation equipment, the wind speed of the corresponding local ventilation equipment is adjusted to the corresponding maximum effective capture wind speed.

6. A medical laboratory ventilation energy-saving automatic control method, applied to the medical laboratory ventilation energy-saving automatic control system according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Obtain real-time images in the laboratory and divide the experimental area and non-experimental area according to the location of each local ventilation device; S2. Real-time analysis of the number of people in the laboratory, their corresponding real-time locations, and abnormal behaviors, while real-time monitoring of the concentration of harmful gases in each experimental area and non-experimental area and the corresponding maintenance time; S3. Determine whether to turn on the whole room ventilation equipment and the local ventilation equipment in each experimental area; S4. Adjust the wind speed of the local ventilation equipment in the corresponding experimental area; adjust the exhaust volume of the whole room ventilation equipment; S5. Adaptively adjust the air supply volume of the whole room ventilation equipment according to the preset pressure environment of the laboratory, the total exhaust volume of the local ventilation equipment and the exhaust volume of the whole room ventilation equipment; The analysis of abnormal behavior specifically includes the following steps: analyzing whether the experimenter has a nose-covering behavior and / or an abnormal gait; treating the experimenter who has a nose-covering behavior and the duration is greater than or equal to a preset nose-covering time, and / or an abnormal gait as an abnormal person; The determination of whether to turn on the whole room ventilation equipment is specifically: monitoring whether there are experimenters in the laboratory and the stay time is greater than or equal to the preset stay threshold, or whether the concentration of harmful gases in the non-experimental area is greater than the fourth preset concentration threshold, if so, turning on the whole room ventilation equipment; The exhaust volume of the whole-room ventilation equipment is adjusted as follows: if the concentration of harmful gases in the non-experimental area is greater than or equal to a third preset concentration threshold, and / or the ratio of the number of abnormal personnel to the total number of personnel in the room is greater than or equal to a preset ratio, the exhaust volume of the whole-room ventilation equipment is increased.

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