Ventilation and Purification Control System Based on Smart Operating Room

Abstract

The present invention relates to the field of operating room ventilation, and is used to solve the problem that a ventilation system operating at a constant power cannot cope with complex and changeable dust and bacteria environments, resulting in inappropriate ventilation and purification efficiency. Specifically, it is a ventilation and purification control system based on an intelligent operating room, including an air volume control unit, a purification rate control unit, a ventilation task management unit, a ventilation environment acquisition unit, a purification environment supervision unit, and a purification equipment supervision unit; in the present invention, intelligent analysis is carried out according to the dust environment inside the operating room and the idle time of the operating room, so that the purification work of the operating room will not affect the normal use of the operating room, the microbial environment in the operating room is monitored, the operation of the sterilization equipment is intelligently controlled according to the microbial monitoring results, and quantitative analysis is carried out according to the dust environment and the microbial environment to achieve air volume control, so that the air volume can not only meet the rapid air change requirements of the dust environment, but also control the ventilation speed to ensure the sterilization effect.

Description

Technical Field

[0001] The present invention relates to the field of operating room ventilation, and specifically to a ventilation and purification control system based on an intelligent operating room. Background Art

[0002] The operating room is a place for providing surgeries and rescues for patients, and is an important technical department of the hospital. Surgical site infection is the second most common cause of hospital infection. In order to ensure the success rate of surgeries and prevent patients from being infected, it is necessary to exhaust the waste gas in each working room of the operating room, remove the dust and microorganisms in the room, and ensure the necessary fresh air volume in each working room. Therefore, it is necessary to ventilate and exchange the air in the operating room. In order to ensure the comfort during ventilation, it is necessary to control the ventilation volume of the fan. At the same time, the operating room should have a set of strict and reasonable rules and regulations and aseptic operation specifications. With the rapid development of surgical technology, the operating room is becoming more and more modern.

[0003] Currently, there are still deficiencies in the existing operating room ventilation and purification control systems. When the existing operating room ventilation and purification control systems are in use, generally a constant ventilation volume is manually preset, and the ventilation volume cannot be adjusted according to the actual situation. At the same time, the dust and bacteria in the operating room air mainly come from outside the operating room, accounting for 90% of the total air volume. Therefore, the air quality outside the operating room directly affects the air quality inside the operating room. However, the air quality outside the operating room is complex and changeable. Therefore, when the ventilation and purification system with a constant ventilation volume is in use, it cannot flexibly adapt to the complex and changeable dust and bacteria environment, reducing the use effect.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the Invention

[0005] In the present invention, intelligent analysis is performed based on the dust environment inside the operating room and the idle time of the operating room, so that the purification work of the operating room will not affect the normal use of the operating room. The microbial environment in the operating room is monitored, and the operation of the sterilization equipment is intelligently controlled according to the microbial monitoring results. Quantitative analysis is performed based on the dust environment and the microbial environment to achieve air volume control, so that the air volume can not only meet the rapid air change requirements of the dust environment, but also control the ventilation speed to ensure the sterilization effect, realizing the comprehensive management and control of the complex dust and bacteria environment in the operating room, and solving the problem that the ventilation system operating at a constant power cannot cope with the complex and changeable dust and bacteria environment, resulting in inappropriate ventilation and purification efficiency. Thus, a ventilation and purification control system based on an intelligent operating room is proposed.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] Ventilation and purification control system based on an intelligent operating room, including a ventilation task management unit, which can obtain ventilation tasks and generate the minimum ventilation speed of ventilation equipment through intelligent analysis according to the ventilation tasks;

[0008] A ventilation environment collection unit, which can collect the impurity content of the environment to be ventilated, analyze according to the collected impurity content, and generate an impurity content degree signal;

[0009] An air volume control unit, which can obtain the impurity content degree through the ventilation environment collection unit, perform a linear change analysis on the impurity content degree, generate a ventilation equipment judgment signal according to the analysis result, and at the same time, the air volume control unit can obtain the minimum ventilation speed of the ventilation equipment through the ventilation task management unit;

[0010] A purification environment supervision unit, which can check the pollutants in the air to be ventilated and limit the gas passing speed according to the pollutant monitoring results;

[0011] A purification equipment supervision unit, which can count the usage amount of sterilization equipment in the ventilation system and make a decision analysis on the maintenance cycle of the sterilization equipment according to the counted usage amount;

[0012] A purification rate control unit, which can obtain the gas passing speed limit through the purification environment supervision unit, and perform a comprehensive analysis with the minimum ventilation speed in the air volume control unit to generate ventilation speed and sterilization power control.

[0013] As a preferred embodiment of the present invention, the ventilation task management unit obtains ventilation tasks by manual input. The ventilation tasks include the ventilation completion time limit and the ventilation space volume. The ventilation task management unit calculates the minimum ventilation speed according to the ventilation completion time limit and the ventilation space volume. The minimum ventilation speed is the ventilation space volume divided by the ventilation completion time limit, and the minimum ventilation speed is sent to the air volume control unit.

[0014] As a preferred embodiment of the present invention, the impurities collected by the ventilation environment collection unit include particulate dust and fine fibers. The ventilation environment collection unit conducts a comparative analysis on the collected impurity content. If the total impurity content is greater than the preset impurity content, a large amount of impurity signal is generated. If the total impurity content is less than the minimum value of the preset impurity content, a small amount of impurity signal is generated. If the total impurity content is within the preset impurity content range, a medium amount of impurity signal is generated. The ventilation environment collection unit sends the impurity content degree signal to the air volume control unit.

[0015] As a preferred embodiment of the present invention, the method for the air volume control unit to perform a linear change analysis on the impurity content is as follows:

[0016] After the air volume control unit obtains the impurity content degree signal, it starts timing. After the timing reaches the preset time length, it sends a collection signal to the ventilation environment collection unit. The ventilation environment collection unit generates a new impurity content degree signal again. The newly generated impurity content degree signal is compared with the previously generated impurity content degree signal. If the impurity content degree signal decreases, a normal ventilation signal is generated. If the impurity content degree signal increases, a ventilation abnormal signal is generated. If the impurity content degree signal remains unchanged, a suspected abnormal signal is generated;

[0017] If the number of consecutive occurrences of the suspected abnormal signal is greater than the preset number threshold, a ventilation abnormal signal is generated. If the number of consecutive occurrences of the suspected abnormal signal is less than or equal to the preset number threshold and a normal ventilation signal is generated, the suspected abnormal signal is cancelled, and only the normal ventilation signal is generated. If the number of consecutive occurrences of the suspected abnormal signal is less than or equal to the preset number threshold and a ventilation abnormal signal is generated, the suspected abnormal signal is cancelled, and only the ventilation abnormal signal is generated.

[0018] As a preferred embodiment of the present invention, the method for the purification environment supervision unit to limit the gas passing speed is as follows:

[0019] The purification environment supervision unit detects the air at the air inlet of the ventilation equipment to obtain the pollutant content of the air. The pollutant in the air is the number of bacteria in the air per unit volume. The purification environment supervision unit determines the sterilization time according to the pollutant content. The purification environment supervision unit determines the gas passing speed of the sterilization section according to the sterilization section length and the required sterilization time, which is recorded as the maximum gas passing speed. The purification environment supervision unit sends the maximum gas passing speed to the purification rate control unit.

[0020] As a preferred embodiment of the present invention, the purification rate control unit compares the maximum gas passing speed with the minimum ventilation speed of the air volume control unit. If the minimum ventilation speed is less than the maximum gas passing speed, the air volume control unit determines the ventilation speed to any speed between the minimum ventilation speed and the maximum gas passing speed. If the minimum ventilation speed is equal to the maximum gas passing speed, the air volume control unit determines the ventilation speed as the minimum ventilation speed. If the minimum ventilation speed is greater than the maximum gas passing speed, a wind speed conflict signal is generated and sent to the purification rate control unit. After the purification rate control unit obtains the wind speed conflict signal, it increases the operating power of the sterilization section.

[0021] As a preferred embodiment of the present invention, the method for the purification equipment supervision unit to obtain the usage amount of the sterilization equipment is as follows:

[0022] Step 1: Statistically analyze the real-time operating power of the sterilization equipment, and use time as the horizontal axis and the real-time power of the sterilization equipment as the vertical axis to plot the curve of the change in the operating power of the sterilization equipment;

[0023] Step 2: Obtain the ventilation speed during the operation of the sterilization equipment through the air volume control unit, and record the duration maintained by the ventilation speed. When the ventilation speed changes, record the ventilation speed after the change by the air volume control unit again, and re-record the duration maintained by the new ventilation speed. The ventilation speed of the purification equipment supervision unit and the duration of each ventilation speed are analyzed through a formula to generate the air change throughput;

[0024] Step 3: The purification equipment supervision unit obtains the content of air pollutants detected by the purification environment supervision unit each time, and analyzes and generates the usage amount of the sterilization equipment through a formula.

[0025] The purification equipment supervision unit performs threshold analysis based on the usage amount of the sterilization equipment. If the usage amount of the sterilization equipment reaches the preset maintenance threshold, a purification equipment maintenance signal is generated. If the usage amount of the sterilization equipment does not reach the preset maintenance threshold, no response is made.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. In the present invention, when controlling the ventilation of the operating room, intelligent analysis is carried out according to the dust environment inside the operating room and the idle time of the operating room, so that the purification work inside the operating room can be completed in a timely manner during the surgical interval, ensuring both the air change effect of the operating room and not affecting the normal use of the operating room.

[0028] 2. In the present invention, the microbial environment in the operating room is monitored, and the operation of the sterilization equipment is intelligently controlled according to the microbial monitoring results, so that when ventilating the operating room, the bacteria contained in the air can be killed, the number of suspended bacteria can be reduced, and the probability of infection can be lowered.

[0029] 3. In the present invention, quantitative analysis is carried out according to the dust environment and the microbial environment to realize air volume control, so that the air volume can not only meet the rapid air change requirements of the dust environment, but also control the ventilation speed to ensure the sterilization effect, realizing the comprehensive control of the complex dust and bacteria environment in the operating room.

[0030] 4. In the present invention, through quantitative supervision and analysis of the ventilation equipment, scientific analysis of the maintenance interval is carried out according to the actual usage frequency and usage load of the ventilation equipment, ensuring the good working condition of the ventilation equipment, and thus ensuring the ventilation and purification effect of the operating room. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 is the system block diagram of the present invention;

[0033] Figure 2 is the system flowchart of the present invention. Specific embodiments

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] Please refer to Figure 1 - Figure 2 As shown, a ventilation and purification control system based on a smart operating room includes an air volume control unit and a purification rate control unit. Among them, the air volume control unit is communicatively connected to a ventilation task management unit and a ventilation environment collection unit, and the purification rate control unit is communicatively connected to a purification environment supervision unit and a purification equipment supervision unit;

[0037] The ventilation task management unit can obtain ventilation tasks. The way to obtain ventilation tasks is manual input. The ventilation tasks include the ventilation completion time limit and the ventilation space volume. The ventilation task management unit calculates the minimum ventilation speed according to the ventilation completion time limit and the ventilation space volume, and sends the minimum ventilation speed to the air volume control unit;

[0038] The ventilation environment collection unit collects impurities in the environment to be ventilated. The collected impurities are artificially preset pollution types, including particulate dust and fine fibers. The ventilation environment collection unit compares and analyzes the collected impurity content. If the total impurity content is greater than the preset impurity content, a large amount of impurity signal is generated. If the total impurity content is less than the lowest value of the preset impurity content, a small amount of impurity signal is generated. If the total impurity content is within the preset impurity content range, a medium amount of impurity signal is generated. The ventilation environment collection unit sends the impurity content degree signal to the air volume control unit;

[0039] After the air volume control unit obtains the impurity content degree signal, it records it. At the same time, it starts timing after obtaining the impurity content signal. After the timing reaches the preset time length, it sends a collection signal to the ventilation environment collection unit. The ventilation environment collection unit compares and analyzes the impurity content in the environment again, and compares the generated impurity content degree signal with the previously generated impurity content degree signal. If the impurity content degree signal decreases, it indicates that the impurity filtering function of the ventilation system is operating normally, and a ventilation normal signal is generated. If the impurity content degree signal increases, it indicates that the impurities in the environment increase instead when the ventilation system is operating, and a ventilation abnormal signal is generated, and the ventilation abnormal signal is sent to the maintenance management personnel through the network to remind the maintenance management personnel to check and maintain the ventilation equipment in time. If the impurity content degree signal remains unchanged, a suspected abnormal signal is generated. If the number of consecutive occurrences of the suspected abnormal signal is greater than the preset number threshold, it indicates that the impurity content in the environment does not decrease under ventilation, and a ventilation abnormal signal is generated. If the number of consecutive occurrences of the suspected abnormal signal is less than or equal to the preset number threshold and a ventilation normal signal is generated, the suspected abnormal signal is cancelled, and only the ventilation normal signal is generated. If the number of consecutive occurrences of the suspected abnormal signal is less than or equal to the preset number threshold and a ventilation abnormal signal is generated, the suspected abnormal signal is cancelled, and only the ventilation abnormal signal is generated;

[0040] The purified environment supervision unit uses a direct-reading microbial enrichment detection device to detect the air at the air inlet of the ventilation equipment. The detection interval is manually preset to obtain the pollutant content of the air. The pollutant of the air is the number of bacteria in the air per unit volume. The purified environment supervision unit determines the sterilization time T according to the pollutant content, T = qM, where q is the preset weight coefficient and M is the pollutant content of the air. The purified environment supervision unit determines the gas passing speed of the sterilization section according to the sterilization section length and the required sterilization time, which is recorded as the maximum gas passing speed. The purified environment supervision unit sends the maximum gas passing speed to the purification rate control unit;

[0041] The purification rate control unit compares the maximum gas passing speed with the minimum ventilation speed of the air volume control unit. If the minimum ventilation speed is less than the maximum gas passing speed, the air volume control unit determines the ventilation speed to any speed between the minimum ventilation speed and the maximum gas passing speed. If the minimum ventilation speed is equal to the maximum gas passing speed, the air volume control unit determines the ventilation speed as the minimum ventilation speed. If the minimum ventilation speed is greater than the maximum gas passing speed, a wind speed conflict signal is generated and sent to the purification rate control unit. After the purification rate control unit obtains the wind speed conflict signal, it increases the operating power of the sterilization section. After the operating power of the sterilization section is increased, the preset weight coefficient q increases, and the sterilization time T and the maximum gas passing speed are recalculated according to the increased new weight coefficient q until the maximum gas passing speed is the same as the minimum ventilation speed, so as to ensure that when ventilating the operating room, both the ventilation air volume can be ensured to be sufficient to ensure the ventilation efficiency, and the filtration and sterilization process of the ventilation can meet the standards to ensure the aseptic effect of the ventilation.

[0042] Embodiment 2:

[0043] Please refer to Figure 1 - Figure 2 As shown in the figure, during the operation of the sterilization process, the purification equipment supervision unit obtains the usage amount of the sterilization equipment. The specific acquisition method is as follows:

[0044] Step 1: Statistically record the real-time operating power of the sterilization equipment, and draw a curve of the change in the operating power of the sterilization equipment with time as the horizontal axis and the real-time power of the sterilization equipment as the vertical axis;

[0045] Step 2: Obtain the ventilation speed during the operation of the sterilization equipment through the air volume control unit, and record the duration maintained by the ventilation speed. When the ventilation speed changes, record the ventilation speed after the change of the air volume control unit again, and record the duration maintained by the new ventilation speed again. The purification equipment supervision unit records each recorded ventilation speed as Fi, i = 1, 2, 3,... n, and records the duration of each ventilation speed as ti. The air change through quantity X is generated through formula analysis. ;

[0046] Step 3: The purification equipment supervision unit obtains the air pollutant content M detected by the purification environment supervision unit each time, and generates the usage amount Y of the sterilization equipment through formula analysis. , where S is the area enclosed by the curve of the operating power of the sterilization equipment and the horizontal axis, and k is a preset weight coefficient, and the value range of k is 0.8 - 1.0.

[0047] The purification equipment supervision unit conducts threshold analysis based on the usage amount of the sterilization equipment. If the usage amount of the sterilization equipment reaches the preset maintenance threshold, a purification equipment maintenance signal is generated and sent to the maintenance management personnel through the network to remind the maintenance management personnel to timely inspect the sterilization components, sterilization pipelines, and microporous filter screens in the sterilization equipment. If the usage amount of the sterilization equipment does not reach the preset maintenance threshold, no response is made.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not elaborate on all details and do not limit the invention to only the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. The ventilation and purification control system based on the smart operating room is characterized by: It includes a ventilation task management unit, which can obtain ventilation tasks and generate the minimum ventilation speed of the ventilation equipment according to intelligent analysis of the ventilation tasks; A ventilation environment collection unit, which can collect impurity content in the environment to be ventilated, analyze the collected impurity content, and generate an impurity content level signal; An air volume control unit, wherein the air volume control unit can obtain the impurity content through the ventilation environment collection unit, and perform linear change analysis on the impurity content, and generate a ventilation equipment judgment signal according to the analysis result. At the same time, the air volume control unit can obtain the minimum ventilation speed of the ventilation equipment through the ventilation task management unit; A clean environment monitoring unit, which can check pollutants in the air to be ventilated and limit the gas passing speed according to the pollutant monitoring results; A purification equipment monitoring unit, which can count the usage of sterilization equipment in the ventilation system and make decision analysis on the maintenance cycle of the sterilization equipment based on the statistical usage; A purification rate control unit, which can obtain the gas passing speed limit through the purification environment monitoring unit, and conduct a comprehensive analysis of it with the minimum ventilation speed in the air volume control unit to generate ventilation speed and sterilization power control; The purification rate control unit compares the maximum gas passage speed with the minimum ventilation speed of the air volume control unit. If the minimum ventilation speed is lower than the maximum gas passage speed, the air volume control unit determines the ventilation speed to any speed between the minimum ventilation speed and the maximum gas passage speed. If the minimum ventilation speed is equal to the maximum gas passage speed, the air volume control unit determines the ventilation speed as the minimum ventilation speed. If the minimum ventilation speed is higher than the maximum gas passage speed, a wind speed conflict signal is generated and sent to the purification rate control unit. After obtaining the wind speed conflict signal, the purification rate control unit increases the operating power of the sterilization section. The maximum gas passage speed is determined based on the content of air pollutants detected at the air inlet of the ventilation equipment.

2. The ventilation and purification control system based on the smart operating room according to claim 1 is characterized in that: The ventilation task management unit obtains the ventilation task by manual input. The ventilation task includes the ventilation completion time limit and the ventilation space volume. The ventilation task management unit calculates the minimum ventilation speed based on the ventilation completion time limit and the ventilation space volume. The minimum ventilation speed is the ventilation space volume divided by the ventilation completion time limit. The minimum ventilation speed is sent to the air volume control unit.

3. The ventilation and purification control system based on the smart operating room according to claim 1 is characterized in that: The impurities collected by the ventilation environment collection unit include particulate dust and fine fibers. The ventilation environment collection unit compares and analyzes the collected impurity contents. If the total impurity content is greater than the preset impurity content, a large amount of impurity signals are generated. If the total impurity content is less than the preset minimum impurity content, a small amount of impurity signals are generated. If the total impurity content is within the preset impurity content range, a medium amount of impurity signals are generated. The ventilation environment collection unit sends the impurity content level signal to the air volume control unit.

4. The ventilation and purification control system based on the smart operating room according to claim 3 is characterized in that: The air volume control unit performs linear variation analysis on the impurity content in the following manner: The air volume control unit starts timing after acquiring the impurity content level signal, and sends a collection signal to the ventilation environment collection unit after the timing reaches a preset time length. The ventilation environment collection unit generates an impurity content level signal again, and compares the newly generated impurity content level signal with the impurity content level signal generated last time. If the impurity content level signal decreases, a normal ventilation signal is generated; if the impurity content level signal increases, an abnormal ventilation signal is generated; if the impurity content level signal remains unchanged, a suspected abnormal signal is generated; If the number of consecutive occurrences of a suspected abnormal signal is greater than a preset number threshold, an abnormal ventilation signal is generated; if the number of consecutive occurrences of a suspected abnormal signal is less than or equal to the preset number threshold, a normal ventilation signal is generated, then the suspected abnormal signal is canceled and only a normal ventilation signal is generated; if the number of consecutive occurrences of a suspected abnormal signal is less than or equal to the preset number threshold, then an abnormal ventilation signal is generated, then the suspected abnormal signal is canceled and only an abnormal ventilation signal is generated.

5. The ventilation and purification control system based on the smart operating room according to claim 1 is characterized in that: The method by which the purification environment monitoring unit limits the gas passing speed is: The purified environment monitoring unit detects the air at the air inlet of the ventilation equipment to obtain the pollutant content of the air, where the pollutants in the air are the number of bacteria per unit volume of air. The purified environment monitoring unit determines the sterilization time according to the pollutant content. The purified environment monitoring unit determines the gas passage speed of the sterilization section according to the length of the sterilization section and the required sterilization time, and records it as the maximum gas passage speed. The purified environment monitoring unit sends the maximum gas passage speed to the purification rate control unit.

6. The ventilation and purification control system based on the smart operating room according to claim 1 is characterized in that: The method for obtaining the usage of the sterilization equipment by the purification equipment supervision unit is: Step 1: Count the real-time operating power of the sterilization equipment, and draw a curve of the operating power change of the sterilization equipment with time as the horizontal axis and the real-time power of the sterilization equipment as the vertical axis; Step 2: The ventilation speed of the sterilization equipment during operation is obtained through the air volume control unit, and the duration of the ventilation speed is recorded. When the ventilation speed changes, the air volume control unit records the changed ventilation speed again, and re-records the duration of the new ventilation speed. The ventilation speed of the purification equipment supervision unit and the duration of each ventilation speed are analyzed by formula to generate the ventilation throughput; Step 3: The purification equipment monitoring unit obtains the air pollutant content detected by the purification environment monitoring unit each time, and generates the sterilization equipment usage through formula analysis; The purification equipment monitoring unit performs a threshold analysis based on the usage of the sterilization equipment. If the usage of the sterilization equipment reaches a preset maintenance threshold, a purification equipment maintenance signal is generated. If the usage of the sterilization equipment does not reach the preset maintenance threshold, no response is made.

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