Methods, systems and storage media for disinfection monitoring of variable air volume valves

Abstract

This application relates to the field of variable air volume (VAV) valve disinfection technology, and discloses a method, system, and storage medium for monitoring VAV valve disinfection. The method includes: determining whether to activate the disinfection device based on multi-source state sensing data of the VAV valve; setting a disinfection device cavity within the non-valve plate movement area of ​​the VAV valve; adjusting the disinfection device to the target output power based on real-time airflow value when the disinfection device is activated; determining whether the disinfection device is in a state of irradiance attenuation every preset cycle; and determining whether to remind the user to perform maintenance based on the irradiance attenuation status. This VAV valve disinfection monitoring method achieves safe, accurate, adaptive, and maintainable disinfection devices within the VAV valve, and ensures that airflow passes through the high-irradiation zone of the disinfection device regardless of the valve plate opening degree, eliminating blind spots in sterilization.

Description

Technical Field

[0001] This application relates to the field of variable air volume valve disinfection technology, and in particular to a method, system and storage medium for monitoring the disinfection of variable air volume valves. Background Technology

[0002] In hospitals, laboratories, and other environments with stringent air cleanliness requirements, the interior of a variable air volume (VAV) valve is prone to bacterial and viral growth due to airflow stagnation and high humidity, posing a risk of cross-infection. Traditional ultraviolet (UV) disinfection devices are often deployed in main air ducts or air conditioning units. The frequent movement of the VAV valve discs makes it easy for the disinfection device to be blocked by the blades, creating sterilization blind spots and hindering effective disinfection of the VAV valve. Furthermore, the lack of intelligent control leads to safety hazards such as ozone leakage and ineffective operation. Simultaneously, the compact structure presents challenges in heat dissipation, ozone risk, and ineffective operation. Summary of the Invention

[0003] In view of this, embodiments of this application provide a method, system and storage medium for disinfection monitoring of variable air volume valves, which can effectively solve the problems of easy bacterial growth inside variable air volume valves and the difficulty of traditional disinfection devices to effectively disinfect the valve body.

[0004] In a first aspect, embodiments of this application provide a disinfection monitoring method for a variable air volume valve, wherein a disinfection device cavity is provided in the non-valve plate movement area inside the fixed guide plate of the variable air volume valve, and the disinfection device is disposed in the disinfection device cavity; the method includes: Acquire multi-source state sensing data of the variable air volume valve; The decision to activate the disinfection device is based on the multi-source state perception data. Under the condition that the disinfection device is turned on, the real-time air volume value of the variable air volume valve is obtained; The target output power of the disinfection device is determined based on the real-time air volume value, and the output power of the disinfection device is adjusted to the target output power. Every preset cycle, the disinfection device is controlled to enter a self-test mode to determine whether the disinfection device is in a state of irradiance attenuation, and based on the irradiance attenuation state, it is determined whether to remind the disinfection device to perform maintenance.

[0005] In a first possible embodiment of the first aspect, the multi-source state sensing data includes the air volume value of the variable air volume valve, continuous operating time, and the status of the maintenance door opening and closing. Determining whether to activate the disinfection device based on the multi-source state sensing data includes: The disinfection device is turned on when the air volume value is greater than or equal to the preset air volume threshold, the continuous running time is greater than or equal to the preset running time, and the maintenance door is in the closed state. The disinfection device will not be turned on if the air volume is less than the preset air volume threshold, the continuous operating time is less than the preset operating time, and the maintenance door is in the open position.

[0006] In a second possible embodiment of the first aspect, determining the target output power of the disinfection device based on the real-time airflow value includes: Under the condition that the real-time air volume value is less than the minimum air volume value, the maximum output power of the disinfection device is taken as the target output power; Under the condition that the real-time air volume value is greater than the maximum air volume value, the minimum output power of the disinfection device is taken as the target output power; Under the condition that the real-time airflow value is greater than or equal to the minimum airflow value and the real-time airflow value is less than or equal to the maximum airflow value, the target output power corresponding to the current real-time airflow value is calculated based on the linear difference function.

[0007] In a third possible embodiment of the first aspect, adjusting the output power of the disinfection device to the target output power includes: A control signal corresponding to the duty cycle of the target output power is sent to the disinfection device, so that when the disinfection device receives the control signal, it adjusts the output power to the target output power.

[0008] In a fourth possible embodiment of the first aspect, determining whether the disinfection device is in a state of irradiance attenuation includes: When the disinfection device is in the self-test mode for a first preset time, the real-time irradiation intensity of the disinfection device is obtained. Under the condition that the real-time irradiance intensity is less than the preset proportion of the initial irradiance intensity, the disinfection device is determined to be in the irradiance intensity decay state, wherein the initial irradiance intensity is the irradiance intensity after the disinfection device is initially powered on for a second preset time. Under the condition that the real-time irradiation intensity is greater than or equal to the initial irradiation intensity of the preset ratio, it is determined that the disinfection device is not in the irradiation intensity decay state.

[0009] In a fifth possible embodiment of the first aspect, determining whether to remind the disinfection device to be maintained based on the irradiance attenuation state includes: When the disinfection device is in a state of irradiation intensity decay and the cumulative operating time of the disinfection device is greater than or equal to a third preset time, a maintenance reminder for the disinfection device is sent to the user.

[0010] In a sixth possible embodiment of the first aspect, it further includes: When the maintenance door is in the open position, the micro switch of the disinfection device is triggered to disconnect, cutting off the power supply to the disinfection device; The disinfection device is shut down if a human body occupancy signal is detected or the temperature of the disinfection device exceeds a preset temperature threshold. The system uploads the operating status information of the disinfection device to the building automation system and responds to the remote control commands of the building automation system to the disinfection device.

[0011] Secondly, embodiments of this application provide a variable air volume valve disinfection monitoring system, including: a variable air volume valve, a disinfection device, and a control terminal; The non-valve plate movement area inside the fixed guide plate of the variable air volume valve is provided with a disinfection device cavity, and the disinfection device is disposed in the disinfection device cavity. The control terminal is used to execute the above-mentioned variable air volume valve disinfection monitoring method.

[0012] In a first possible embodiment of the second aspect, the disinfection device includes a parabolic reflector cavity, a deep ultraviolet light-emitting diode array, and a quartz glass window; The deep ultraviolet light-emitting diode array is disposed in the cavity of the disinfection device; The parabolic reflector cavity is located at the front end of the disinfection device cavity, and the quartz glass window is located at the outlet of the disinfection device cavity; The parabolic reflector cavity is used to focus the divergent light emitted by the deep ultraviolet light-emitting diode array and transmit it through the quartz glass window to the airflow center region of the variable air volume valve.

[0013] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed on a processor, implements the above-described variable air volume valve disinfection monitoring method.

[0014] The embodiments of this application have the following beneficial effects: This embodiment of a variable air volume (VAV) valve disinfection monitoring method includes: acquiring multi-source status sensing data of the VAV valve; determining whether to activate the disinfection device of the VAV valve based on the multi-source status sensing data, wherein a disinfection device cavity is provided in the non-valve plate movement area inside the fixed guide plate of the VAV valve, and the disinfection device is installed in the disinfection device cavity; acquiring the real-time airflow value of the VAV valve when the disinfection device is activated; determining the target output power of the disinfection device based on the real-time airflow value, and adjusting the output power of the disinfection device to the target output power; controlling the disinfection device to enter a self-test mode every preset cycle to determine whether the disinfection device is in a state of irradiance intensity decay, and determining whether to remind the disinfection device to perform maintenance based on the irradiance intensity decay state. Based on the above scheme, this VAV valve disinfection monitoring method achieves the safety, accuracy, adaptability, and maintainability of the disinfection device inside the VAV valve, avoiding the risks of personnel exposure, ozone leakage, and ineffective start-stop. Moreover, the disinfection device is located in the disinfection device cavity outside the valve plate movement area. Regardless of the valve plate opening degree, the airflow passes through the high-irradiation area, with no sterilization blind spots. This not only effectively disinfects the variable air volume valve, but also avoids problems such as heat dissipation difficulties, ozone risks, and ineffective operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This paper shows a schematic diagram of a variable air volume valve disinfection monitoring system according to an embodiment of the present application. Figure 2 This paper illustrates a first flowchart of the disinfection monitoring method for a variable air volume valve according to an embodiment of this application. Figure 3 This paper illustrates a second flowchart of the disinfection monitoring method for variable air volume valves according to an embodiment of this application. Figure 4 The diagram illustrates a third process flow of the variable air volume valve disinfection monitoring method according to an embodiment of this application.

[0017] Explanation of key component symbols: 100 - Variable air volume valve disinfection monitoring system; 110 - Variable air volume valve; 120 - Disinfection device; 130 - Control terminal. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0019] The components of the embodiments of this application described and illustrated in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] In the following text, the terms "comprising," "having," and their cognates, which may be used in various embodiments of this application, are intended only to indicate a particular feature, number, step, operation, element, component, or combination thereof, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, or adding the possibility of one or more combinations thereof. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0021] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. Terms (such as those defined in commonly used dictionaries) shall be interpreted as having the same meaning as in their contextual meaning in the relevant technical field and shall not be construed as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.

[0022] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] First, this application provides a variable air volume valve disinfection monitoring system 100. Please refer to... Figure 1 This is a structural block diagram of the variable air volume valve disinfection monitoring system 100 provided in an embodiment of this application. The variable air volume valve disinfection monitoring system 100 may include: a variable air volume valve 110, a disinfection device 120, and a control terminal 130.

[0024] In one embodiment, a disinfection device cavity is provided in the non-valve plate movement area inside the fixed guide plate of the variable air volume valve 110, and a disinfection device 120 is disposed within the disinfection device cavity. Exemplarily, the disinfection device 120 includes a parabolic reflector cavity, a deep ultraviolet light-emitting diode (UV-C LED) array, and a quartz glass window. The deep ultraviolet light-emitting diode array is disposed within the disinfection device cavity, the parabolic reflector cavity is disposed at the front end of the disinfection device cavity, and the quartz glass window is disposed at the outlet of the disinfection device cavity.

[0025] In one embodiment, the sterilization device cavity is a dedicated cavity pre-reserved inside the fixed guide plate. A deep ultraviolet light-emitting diode array is embedded in the non-valve plate movement area of ​​this cavity, avoiding the movement area of ​​the movable valve plate. A parabolic reflector cavity is provided at the front end of the cavity, and the rear end is tightly attached to the metal valve body shell to facilitate heat dissipation. The outlet is covered with a high-transmittance UV quartz glass window, forming an unobstructed sterilization beam tunnel focused on the center line of the airflow. The parabolic reflector cavity is used to focus the divergent light emitted by the deep ultraviolet light-emitting diode array and transmit it through the quartz glass window to the airflow center area of ​​the variable air volume valve 110.

[0026] In this embodiment, in the variable air volume valve 110, the movable valve plate is the core mechanical component for regulating airflow, and its rotation angle generally varies continuously within the range of 0° (fully closed) to 90° (fully open). To ensure that the deep ultraviolet light-emitting diode array light source is not blocked by the valve plate, this dynamic sweep space must be precisely excluded. In the CAD model of the variable air volume valve, with the valve plate rotation axis as the center, the valve plate entity is scanned along its maximum opening angle (e.g., 90°) to generate a three-dimensional fan-shaped or cylindrical sector space, which is the valve plate movement area. This area appears as a dynamic blocking sector on the cross-section of the valve body. The deep ultraviolet light-emitting diode array and its disinfection device cavity can be completely arranged outside this valve plate movement area. For example, if the valve plate rotates around a horizontal axis, the disinfection device cavity is installed inside the top or bottom guide plate of the valve body; if it is a vertical axis multi-leaf valve, it is arranged on the side wall guide plate, avoiding the radial extension range of the blades.

[0027] A parabolic reflector cavity, a deep ultraviolet (DUV) light-emitting diode (LED) array, and a quartz glass window together form a closed or semi-closed optical channel. Located beside the airflow path but with its optical axis aligned with the airflow centerline, the parabolic reflector cavity focuses the divergent light emitted by the DUV LED array onto the central region of the airflow, significantly increasing the irradiance in that area. Multiple LEDs are arranged along the airflow direction, their light spots overlapping longitudinally at the centerline to form a high-dose irradiation zone. Because this area completely avoids the valve plate's movement range, microorganisms in the airflow are continuously exposed to an effective UV dose within this channel, achieving highly efficient inactivation. This optical channel, through reflection focusing and direct superposition, forms a high-intensity, uniform, and dead-angle-free ultraviolet irradiation band in the central region of the airflow cross-section. Since there are no mechanical parts obstructing the airflow as it passes through this area, an unobstructed bactericidal beam tunnel is formed.

[0028] In this embodiment, effective sterilization satisfies the following: in, This represents the irradiation dose (μJ / cm²). For irradiation intensity, Exposure time is inversely proportional to wind speed. The minimum effective radiation dose is determined by this optical channel, which ensures that the radiation dose is greater than or equal to the minimum effective radiation dose by maximizing the radiation intensity and ensuring that the exposure time is not interrupted by shielding.

[0029] In another embodiment, the variable air volume valve 110 includes a pair of fixed guide plates at its outlet end. These fixed guide plates are non-moving components used to guide the airflow smoothly. A rectangular cavity can be formed on the inner wall of one of the guide plates (facing the main flow channel) to create a disinfection device cavity. The disinfection device 120 is entirely embedded within this cavity, with its light-emitting surface parallel to the airflow direction and completely outside the maximum opening envelope of the variable air volume valve 110, ensuring that the valve does not block the light emission path at any opening from 0% to 100%. This envelope can be obtained through measured trajectory fitting and represents the maximum spatial boundary that the valve may occupy. The deep ultraviolet light-emitting diode array is set as an ozone-free UV-C LED array, which has the advantages of being mercury-free and ozone-free; small in size, suitable for confined disinfection device cavity spaces; and capable of PWM (Pulse Width Modulation) dimming, supporting intelligent power control.

[0030] The parabolic reflector cavity is a one-piece, high-reflectivity parabolic focusing cavity located in front of the LED array (facing the airflow side). It is precision CNC machined from a die-cast aluminum substrate, with the reflective surface coated with a high-purity aluminum film or deposited with an enhanced UV reflective coating to improve reflectivity. The parabolic focal point is aligned with the LED's light-emitting center, causing the original UV light with a large divergence angle to be reflected and converged into a parallel or slightly convergent beam, projected onto the airflow centerline region. The cavity outlet is sealed with a fused silica glass window to improve light transmittance while isolating dust and moisture. It can be understood that because the parabolic reflector cavity confines the UV light to the core airflow region, while the 110-piece variable air volume valve only adjusts the peripheral flow area, the mainstream high-speed zone remains exposed to a high irradiance field.

[0031] In another embodiment, the control terminal 130 can process information and / or data related to the variable air volume valve disinfection monitoring method to perform one or more functions described in this application. For example, the control terminal 130 can acquire multi-source status sensing data of the variable air volume valve 110; determine whether to turn on the disinfection device 120 of the variable air volume valve 110 based on the multi-source status sensing data; acquire the real-time air volume value of the variable air volume valve 110 when the disinfection device 120 is turned on; determine the target output power of the disinfection device 120 based on the real-time air volume value, and adjust the output power of the disinfection device 120 to the target output power; control the disinfection device 120 to enter a self-test mode every preset cycle to determine whether the disinfection device 120 is in a state of irradiance intensity decay, and determine whether to remind the disinfection device 120 to perform maintenance based on the state of irradiance intensity decay. This enables the control terminal 130 to intelligently control the opening and output power of the disinfection device 120 in the variable air volume valve 110, improve the sterilization efficiency, and perform self-testing of sterilization effect at regular intervals, actively prompting maintenance to ensure long-term sterilization effectiveness.

[0032] For ease of understanding, the following embodiments of this application will be described in terms of... Figure 1 Taking the variable air volume valve disinfection monitoring system 100 shown as an example, and in conjunction with the accompanying drawings, the disinfection monitoring method of the variable air volume valve provided in this application embodiment will be described.

[0033] Figure 2 A flowchart illustrating a disinfection monitoring method for a variable air volume (VAV) valve according to an embodiment of this application is shown. Exemplarily, the disinfection monitoring method for the VAV valve includes the following steps: S210, acquire multi-source status sensing data of variable air volume valve 110.

[0034] Exemplary, the multi-source status sensing data includes the airflow value of the variable air volume valve 110, continuous operating time, and maintenance door open / close status. In this embodiment, the airflow value is the actual volumetric flow rate of air passing through the variable air volume valve 110 per unit time, collected in real time by a built-in differential pressure sensor or anemometer, reflecting the system load and airflow intensity. The continuous operating time is the cumulative duration of continuous operation of the variable air volume valve 110 since the current power-on or the last reset. The maintenance door is an openable maintenance cover provided on the housing of the variable air volume valve 110, used for daily inspection, cleaning, or replacement of the disinfection device 120. The maintenance door open / close status indicates whether the maintenance door is open.

[0035] S220 determines whether to activate the disinfection device 120 based on multi-source state perception data.

[0036] In one embodiment, the disinfection device 120 is activated when the airflow value is greater than or equal to a preset airflow threshold, the continuous operating time is greater than or equal to a preset operating time, and the maintenance door is in the closed state. The disinfection device 120 is not activated when the airflow value is less than the preset airflow threshold, the continuous operating time is less than the preset operating time, and the maintenance door is in the open state.

[0037] In this embodiment, the disinfection device 120 is activated by integrating multi-source state sensing data. A preset airflow threshold constraint ensures sufficient airflow velocity to minimize microbial exposure time within the optical channel. A preset running time constraint prevents the disinfection device 120 from activating immediately after startup, before the airflow reaches a steady state, or during momentary disturbances. Forced closure of the inspection door avoids any potential UV radiation exposure during manual intervention, significantly improving the safety and effectiveness of disinfection. The preset airflow threshold and preset running time can be set according to actual conditions. For example, the sterilization process is only allowed when the following conditions are simultaneously met: airflow greater than or equal to 200 m³ / h, unmanned mode, inspection door closed, and continuous running time greater than or equal to 5 minutes.

[0038] S230: Under the condition that the disinfection device 120 is turned on, the real-time air volume value of the variable air volume valve 110 is obtained.

[0039] S240 determines the target output power of the disinfection device 120 based on the real-time air volume value and adjusts the output power of the disinfection device 120 to the target output power.

[0040] As an example, the analog voltage signal can be read by the differential pressure sensor inside the variable air volume valve 110, sampled by the analog-to-digital converter (ADC), and converted into a real-time air volume value by a calibration formula.

[0041] In one embodiment, such as Figure 3As shown, determining the target output power based on the real-time air volume value includes the following steps: S241, under the condition that the real-time air volume value is less than the minimum air volume value, the maximum output power of the disinfection device 120 is taken as the target output power.

[0042] In this embodiment, a segmented airflow and power mapping strategy is used to achieve precise coupling between the deep ultraviolet light-emitting diode array output and airflow dynamics. In low airflow areas, such as when the real-time airflow value is less than 200 m³ / h, the maximum output power is activated as a safety net to compensate for the risk of bacterial growth caused by prolonged exposure time.

[0043] S242, under the condition that the real-time air volume value is greater than the maximum air volume value, the minimum output power of the disinfection device 120 is taken as the target output power.

[0044] As an example, in high-airflow areas, such as real-time airflow values ​​greater than 800 m³ / h, the deep ultraviolet light-emitting diode array is forced to operate at minimum output power to suppress the junction temperature spike of the light-emitting diodes, extend their service life, and avoid the risk of ozone regeneration.

[0045] S243, under the condition that the real-time air volume value is greater than or equal to the minimum air volume value and the real-time air volume value is less than or equal to the maximum air volume value, calculate the target output power corresponding to the current real-time air volume value based on the linear difference function.

[0046] In this embodiment, in the intermediate range, such as when the real-time air volume is greater than or equal to 200 m³ / h and less than or equal to 800 m³ / h, a linear difference function is used to make the target output power continuously adjustable with the air volume, taking into account sterilization efficiency, energy efficiency ratio and thermal management, so as to achieve effective sterilization under working conditions.

[0047] In one embodiment, when the real-time airflow value is greater than or equal to the minimum airflow value and less than or equal to the maximum airflow value, the calculation formula for the linear difference function is as follows:

[0048] Indicates the target output power. This indicates the real-time air volume value. This represents the minimum air volume value. This indicates the maximum air volume value. Indicates the maximum output power. This indicates the minimum output power.

[0049] For example, when the real-time air volume is less than the minimum air volume of 200 m³ / h, the corresponding maximum output power is 100%; when the real-time air volume is greater than the maximum air volume of 800 m³ / h, the corresponding maximum output power is 60%; and when the real-time air volume is Q = 500 m³ / h, the corresponding target output power is 80%.

[0050] In one embodiment, a control signal corresponding to the duty cycle of the target output power is sent to the disinfection device 120, so that the disinfection device 120 adjusts the output power to the target output power when it receives the control signal.

[0051] In this embodiment, the deep ultraviolet (DUV) light-emitting diode (LED) array is driven by switching transistors, such as transistors, PMOS transistors, and NMOS transistors. The control terminal 130 outputs a control signal to control the output power. This control signal is a PWM signal. The PWM control signal output by the control terminal 130 drives the switching transistors to turn on / off. By adjusting the PWM duty cycle, the average operating current of the DUV LED array is linearly controlled, thereby achieving control over the DUV light output power. The duty cycle is the ratio of the high-level (switch-on) duration to the total cycle time of the PWM signal within one complete cycle. For example, when the target output power is 80%, the high level of the control PWM signal occupies 80% of the cycle, and the low level occupies 20% of the cycle.

[0052] S250, every preset cycle, controls the disinfection device 120 to enter the self-test mode to determine whether the disinfection device 120 is in the state of irradiation intensity decay, and determines whether to remind the disinfection device 120 to perform maintenance based on the state of irradiation intensity decay.

[0053] In this embodiment, the control terminal 130 has a built-in real-time clock (RTC) that is set to start self-testing at a fixed time every preset period. For example, 02:00 a.m. every day, this period is the low load or shutdown window of the heating, ventilation and air conditioning (HVAC) system, so that the self-testing process is performed without affecting the HVAC airflow organization or reducing the real-time sterilization effect of the space.

[0054] As an example, before the disinfection device 120 enters the self-test mode, the HVAC fan is turned off or the airflow value of the variable air volume valve 110 is waited for to reach 1 m³ / s, and other external interruptions are disabled to ensure focus on the self-test process. When the disinfection device 120 enters the self-test mode, it is controlled to maintain maximum output power for a first preset time to allow the LED junction temperature to reach a steady state and avoid artificially high light intensity in a cold state. For example, the first preset time can be set to 60 seconds.

[0055] In one embodiment, when the disinfection device 120 is in self-test mode for a continuous first preset time, the real-time irradiance intensity of the disinfection device 120 is acquired. If the real-time irradiance intensity is less than a preset proportion of the initial irradiance intensity, it is determined that the disinfection device 120 is in an irradiance intensity decay state, where the initial irradiance intensity is the irradiance intensity after the disinfection device 120 is initially powered on for a second preset time. If the real-time irradiance intensity is greater than or equal to a preset proportion of the initial irradiance intensity, it is determined that the disinfection device 120 is not in an irradiance intensity decay state.

[0056] In this embodiment, the initial irradiance is recorded after a second preset time following the initial power-on of the deep ultraviolet light-emitting diode array. This second preset time can be set according to actual conditions, for example, 24 hours. The irradiance intensity can be measured by a photosensitive sensor. The real-time irradiance intensity can be compared with the initial irradiance, and the comparison result determines whether the device is in a state of irradiance intensity decay. For example, the preset ratio can be set to a range of 60-75%. When the preset ratio is set to 70%, if the real-time irradiance intensity is less than 70% of the initial irradiance, it is determined that the disinfection device 120 is in a state of irradiance intensity decay, thus realizing the monitoring of the decay state of the disinfection device 120.

[0057] In another embodiment, when the disinfection device 120 is in a state of irradiation intensity decay and the cumulative operating time of the disinfection device 120 is greater than or equal to a third preset time, a maintenance reminder for the disinfection device 120 is fed back to the user.

[0058] In this embodiment, the third preset time can be set according to actual conditions. For example, the third preset time can be set to 9000 hours. When the cumulative running time is greater than the threshold value and the device is in a state of irradiance attenuation, maintenance information is displayed. For example, the disinfection device 120 can be prompted to perform maintenance through local audio-visual prompts or local screen prompts. If the disinfection device 120 is not in a state of irradiance attenuation, or if the disinfection device 120 is in a state of irradiance attenuation but the cumulative running time is less than the third preset time, the self-test timestamp is updated, and the device returns to normal working mode.

[0059] In one embodiment, such as Figure 4 As shown, the disinfection monitoring method for the variable air volume valve also includes the following steps: S260, when the maintenance door is in the open position, the micro switch of the disinfection device 120 is triggered to open, cutting off the power supply to the disinfection device 120.

[0060] In this embodiment, a micro switch is used to disconnect the contacts when the maintenance door is opened, thereby physically isolating the disinfection device 120 from the power supply. When the maintenance door is opened, the mechanically linked micro switch immediately disconnects, directly cutting off the main power supply driving the disinfection device 120, thus avoiding the risk of personnel being exposed to ultraviolet radiation when accidentally entering the disinfection area.

[0061] S270, if a human body occupancy signal is detected or the temperature of the disinfection device 120 exceeds a preset temperature threshold, the disinfection device 120 is turned off.

[0062] In this embodiment, the human body occupancy signal is used to indicate whether a human body is exposed to the ultraviolet light of the disinfection device 120, and the preset temperature threshold is used to indicate abnormal temperature of the deep ultraviolet light-emitting diode array. By monitoring two independent risk sources, namely human body presence and device overheating, in parallel, the disinfection device 120 is triggered to shut down immediately, thereby achieving safe use of the disinfection device 120. S280 uploads the operating status information of the disinfection device 120 to the building automation system and responds to the remote control commands of the building automation system to the disinfection device 120.

[0063] In one embodiment, the control terminal 130 can upload the operating status information of the disinfection device 120 to the building automation system in real time via the Modbus Remote Terminal Unit (RTU) protocol. The operating status information includes, but is not limited to, the on / off status of the disinfection device 120, the remaining lifespan of the lamps, and fault codes (such as obstruction, overheating, or door not closed). It supports the building automation system in remotely forcing the start and stop of the disinfection device 120 and scheduling disinfection plans (such as automatic operation from 2:00 AM to 4:00 AM), achieving intelligent operation and maintenance.

[0064] This application also provides a control terminal 130, which, by way of example, includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to enable the control terminal 130 to perform the above-described variable air volume valve disinfection monitoring method.

[0065] The processor can be an integrated circuit chip with signal processing capabilities. The processor can be a general-purpose processor, including at least one of a Central Processing Unit (CPU), Graphics Processing Unit (GPU), Network Processor (NP), Digital Signal Processor (DSP), Application-Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor can be a microprocessor or any conventional processor, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application.

[0066] The memory can be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory is used to store computer programs, and the processor can execute the computer programs accordingly after receiving execution instructions.

[0067] This application also provides a computer-readable storage medium for storing the computer program used in the aforementioned control terminal. For example, the computer-readable storage medium may include, but is not limited to, various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0068] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that, in alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0069] In addition, the functional modules or units in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0070] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a smartphone, personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0071] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A method for monitoring the disinfection of a variable air volume valve, characterized in that, A disinfection device cavity is provided in the non-valve plate movement area inside the fixed guide plate of the variable air volume valve, and the disinfection device is disposed in the disinfection device cavity. The method includes: Acquire multi-source state sensing data of the variable air volume valve; The decision to activate the disinfection device is based on the multi-source state perception data. Under the condition that the disinfection device is turned on, the real-time air volume value of the variable air volume valve is obtained; The target output power of the disinfection device is determined based on the real-time air volume value, and the output power of the disinfection device is adjusted to the target output power. Every preset cycle, the disinfection device is controlled to enter a self-test mode to determine whether the disinfection device is in a state of irradiance attenuation, and based on the irradiance attenuation state, it is determined whether to remind the disinfection device to perform maintenance.

2. The disinfection monitoring method for a variable air volume valve according to claim 1, characterized in that, The multi-source status sensing data includes the air volume value of the variable air volume valve, continuous operating time, and the status of the maintenance door opening and closing. Determining whether to activate the disinfection device based on the multi-source status sensing data includes: The disinfection device is turned on when the air volume value is greater than or equal to the preset air volume threshold, the continuous running time is greater than or equal to the preset running time, and the maintenance door is in the closed state. The disinfection device will not be turned on if the air volume is less than the preset air volume threshold, the continuous operating time is less than the preset operating time, and the maintenance door is in the open position.

3. The disinfection monitoring method for a variable air volume valve according to claim 1, characterized in that, Determining the target output power of the disinfection device based on the real-time air volume value includes: Under the condition that the real-time air volume value is less than the minimum air volume value, the maximum output power of the disinfection device is taken as the target output power; Under the condition that the real-time air volume value is greater than the maximum air volume value, the minimum output power of the disinfection device is taken as the target output power; Under the condition that the real-time airflow value is greater than or equal to the minimum airflow value and the real-time airflow value is less than or equal to the maximum airflow value, the target output power corresponding to the current real-time airflow value is calculated based on the linear difference function.

4. The method for monitoring disinfection of a variable air volume valve according to claim 1, characterized in that, Adjusting the output power of the disinfection device to the target output power includes: A control signal corresponding to the duty cycle of the target output power is sent to the disinfection device, so that when the disinfection device receives the control signal, it adjusts the output power to the target output power.

5. The disinfection monitoring method for a variable air volume valve according to claim 1, characterized in that, Determining whether the disinfection device is in a state of irradiance attenuation includes: When the disinfection device is in the self-test mode for a continuous first preset time, the real-time irradiation intensity of the disinfection device is obtained. Under the condition that the real-time irradiance intensity is less than the preset proportion of the initial irradiance intensity, the disinfection device is determined to be in the irradiance intensity decay state, wherein the initial irradiance intensity is the irradiance intensity after the disinfection device is initially powered on for a second preset time. Under the condition that the real-time irradiation intensity is greater than or equal to the initial irradiation intensity of the preset ratio, it is determined that the disinfection device is not in the irradiation intensity decay state.

6. The disinfection monitoring method for a variable air volume valve according to claim 1, characterized in that, The step of determining whether to remind the disinfection device to be maintained based on the radiation intensity attenuation state includes: When the disinfection device is in a state of irradiation intensity decay and the cumulative operating time of the disinfection device is greater than or equal to a third preset time, a maintenance reminder for the disinfection device is sent to the user.

7. The method for monitoring disinfection of a variable air volume valve according to claim 2, characterized in that, Also includes: When the maintenance door is in the open position, the micro switch of the disinfection device is triggered to disconnect, cutting off the power supply to the disinfection device; The disinfection device is turned off if a human body occupancy signal is detected or if the temperature of the disinfection device exceeds a preset temperature threshold. The system uploads the operating status information of the disinfection device to the building automation system and responds to the remote control commands of the building automation system to the disinfection device.

8. A variable air volume valve disinfection monitoring system, characterized in that, include: Variable air volume valve, disinfection device and control terminal; The non-valve plate movement area inside the fixed guide plate of the variable air volume valve is provided with a disinfection device cavity, and the disinfection device is disposed in the disinfection device cavity. The control terminal is used to execute the variable air volume valve disinfection monitoring method as described in any one of claims 1-7.

9. The variable air volume valve disinfection monitoring system according to claim 8, characterized in that, The disinfection device includes a parabolic reflector cavity, a deep ultraviolet light-emitting diode array, and a quartz glass window; The deep ultraviolet light-emitting diode array is disposed in the cavity of the disinfection device; The parabolic reflector cavity is located at the front end of the cavity of the disinfection device, and the quartz glass window is located at the outlet of the cavity of the disinfection device; The parabolic reflector cavity is used to focus the divergent light emitted by the deep ultraviolet light-emitting diode array and transmit it through the quartz glass window to the airflow center region of the variable air volume valve.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed on a processor, implements the variable air volume valve disinfection monitoring method according to any one of claims 1-7.

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