Medical water disinfection and sterilization control system

Abstract

The application discloses a medical water disinfection and sterilization control system, and relates to the technical field of disinfection and sterilization.The technical scheme points of the application include an ultraviolet disinfection unit, a data monitoring unit and a control unit.The ultraviolet disinfection unit comprises a pipe body, water inlets and outlets are arranged at the two ends of the pipe body, ultraviolet lamps are arranged in the pipe body along the axial direction of the pipe body, and ultraviolet intensity sensors are arranged at positions adjacent to the ultraviolet lamps, and the ultraviolet intensity sensors are used for real-time detection of ultraviolet irradiation intensity.The control unit is electrically connected with the data monitoring unit and the ultraviolet disinfection unit, receives flow data from a flow sensor and ultraviolet irradiation intensity from the ultraviolet intensity sensors, generates a control instruction based on the flow data, the ultraviolet irradiation intensity and a preset disinfection effect target, and the effect is to realize the optimal balance of disinfection effect and operation efficiency.

Description

Technical Field

[0001] This invention relates to the field of disinfection and sterilization technology, and more specifically, to a medical water disinfection and sterilization control system. Background Technology

[0002] Disinfection and sterilization of medical water is a core aspect of ensuring water safety in medical institutions and preventing nosocomial infections. Traditional ultraviolet (UV) disinfection systems operate in an open-loop mode with fixed power and flow rate, relying solely on preset UV lamp power and water flow parameters for disinfection, and cannot be dynamically adjusted according to actual operating conditions. In practical applications, the flow rate of medical water fluctuates significantly with the time of day and departmental needs. For example, during peak outpatient hours, water flow surges, and the residence time of water in the disinfection tube is greatly shortened, while the UV lamp power does not increase synchronously, resulting in insufficient disinfection dosage and failure to meet the sterilization standards for medical water. At night, during low-flow periods, the water residence time is too long, and the UV lamps operate continuously at full power, causing significant energy waste and accelerating lamp aging, thus shortening the equipment's lifespan.

[0003] Traditional systems lack real-time monitoring and closed-loop control of key parameters in the disinfection process. Most devices only have simple water quality sensors at the inlet or outlet, failing to acquire core operating parameters such as water flow rate and ultraviolet radiation intensity in real time. This makes it impossible to promptly detect issues like UV lamp aging, radiation intensity decay, and water flow short-circuiting, resulting in significant uncontrollability in disinfection effectiveness. Consequently, monitoring data cannot accurately reflect the state of the disinfection process and cannot provide a reliable basis for control measures. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a medical water disinfection and sterilization control system.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A medical water disinfection and sterilization control system includes an ultraviolet disinfection unit, a data monitoring unit, and a control unit; The ultraviolet disinfection unit includes a tube body with an inlet and an outlet at both ends of the tube body. An ultraviolet lamp is arranged along the axial direction inside the tube body. The ultraviolet lamp is used to irradiate and disinfect the water flowing through the tube body. The data monitoring unit includes a flow sensor and an ultraviolet intensity sensor; The flow sensor is installed at the inlet or outlet of the water, and the flow sensor is used to detect the water flow rate in real time. The ultraviolet intensity sensor is located near the ultraviolet lamp and is used to detect the ultraviolet radiation intensity in real time. The control unit is electrically connected to the data monitoring unit and the ultraviolet disinfection unit, and receives flow data from the flow sensor and ultraviolet irradiation intensity from the ultraviolet intensity sensor. Control commands are generated based on flow data, ultraviolet radiation intensity, and preset disinfection effect targets.

[0006] Preferably, the disinfection equipment is formed by sequentially connecting the inlet and outlet of the pipe in a serpentine manner.

[0007] Preferably, the control command is used to dynamically adjust at least one of the following disinfection parameters: The flow rate of water through the pipe body can be controlled by adjusting the opening of the valves at the inlet and / or outlet. Control the on / off state of each of the ultraviolet lamps; Adjust the luminous power of each of the ultraviolet lamps to change its irradiation intensity.

[0008] Preferably, it also includes a data communication unit and a remote monitoring platform; The data communication unit is connected to the control unit and the data monitoring unit respectively. The data communication unit is used to send flow data, ultraviolet radiation intensity and the working status information of the control unit to the remote monitoring platform through a wireless network. The remote monitoring platform is used to receive, store, and display data sent by the data communication unit, and generates alarm information when the data exceeds a preset threshold.

[0009] Preferably, the flow rate of water through the pipe is controlled by adjusting the opening degree of the valves at the inlet and / or outlet, specifically including the following steps: Monitor the disinfection reaction state of the water flow inside the pipe, determine the flow velocity range based on the disinfection reaction state, and determine the initial adjustment direction of the valve opening based on the flow velocity range; Adjust the valve opening according to the initial adjustment direction to change the flow velocity of water through the pipe and capture the changing trend of the water disinfection reaction state in real time. Determine the direction and degree of deviation between the changing trend and the preset disinfection response trend; If the deviation indicates insufficient disinfection reaction intensity, adjust the valve opening in the opposite direction to slow down the water flow rate, and determine the adjustment range according to the degree of deviation. If the deviation is due to excessive disinfection reaction intensity, adjust the valve opening in the positive direction to increase the water flow rate, and determine the adjustment range according to the degree of deviation. The water flow rate is matched with the disinfection reaction state. When the disinfection reaction reaches the preset stable state, the valve opening adjustment is stopped and the current opening is maintained. The disinfection reaction state is continuously monitored. If the disinfection reaction state deviates, the valve opening is adjusted accordingly to keep the disinfection reaction in the preset stable state.

[0010] Preferably, controlling the on / off state of each ultraviolet lamp specifically includes the following steps: The ultraviolet lamps are divided into multiple continuous control zones according to the direction of water flow. The residence time of water in the pipe is determined based on the water flow data, and the number of areas where ultraviolet lamps need to be turned on is determined based on the residence time and the preset disinfection effect target. After the water flows through the control area, the control unit receives the ultraviolet disinfection effect corresponding to the control area and determines whether the ultraviolet disinfection effect of the water flowing through the control area has reached the stage standard. If the ultraviolet disinfection effect of the water flow through the control area does not meet the stage standard, then turn on the ultraviolet lamps in the adjacent control area and supplement the disinfection dose. If the ultraviolet disinfection effect of the water flow through the control area reaches the stage standard, the ultraviolet lamps in the adjacent control areas will be temporarily suspended.

[0011] Preferably, determining whether the ultraviolet disinfection effect of the water flow through the controlled area meets the stage standard specifically includes the following steps: The initial irradiance of the ultraviolet lamps in the control area was collected before the water flow entered the control area, and the initial water quality-related feedback data before the water flow entered the control area were also collected. After the water flows through the control area, the current irradiance of the ultraviolet lamps in the control area is collected in real time. The irradiance attenuation difference is obtained by comparing the current irradiance with the initial irradiance. Determine whether the difference in irradiance intensity attenuation has reached the stage standard; If the difference in irradiance intensity attenuation does not reach the preset threshold, it is determined that the ultraviolet disinfection effect of the water flowing through the control area has reached the stage standard. If the difference in irradiance intensity attenuation reaches a preset threshold, the ultraviolet disinfection effect of the water flowing through the control area is determined to have reached the stage standard.

[0012] Preferably, adjusting the luminous power of each of the ultraviolet lamps to change its irradiation intensity specifically includes the following steps: The real-time operating temperature of the ultraviolet lamp is collected, and the degree of influence of temperature on the luminous power is determined based on the real-time operating temperature and the current irradiation intensity of the ultraviolet lamp. The adjustment range of the luminous power is determined based on the degree of influence, and the luminous power of the ultraviolet lamp is dynamically adjusted according to the adjustment range to change its irradiation intensity.

[0013] Preferably, determining the adjustment amplitude of the luminous power based on the degree of influence specifically includes the following steps: Determine the trend of temperature's influence on luminous power based on the degree of influence, and clarify the rise and fall of the degree of influence with temperature. The temperature stability stage and temperature fluctuation stage are determined based on the influence trend, the rise and fall pattern, and the real-time operating temperature of the ultraviolet lamp. During the temperature stabilization phase, a fixed adjustment amplitude is determined based on the strength of the influence. During temperature fluctuations, the rate of change of the adjustment amplitude is dynamically adjusted based on real-time changes in the degree of influence.

[0014] Preferably, the method further includes the following steps: After generating alarm information, it is sent to the platform display interface to present the location and type of the abnormality in a visual form, and the warning information is transmitted to the control unit; After receiving the alarm information, the control unit initiates the corresponding action and locks the operating parameters of the ultraviolet lamp.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention places a flow sensor at the inlet or outlet to capture real-time water flow data. This data directly reflects the flow rate and volume of water in the disinfection system, serving as a basis for determining the water residence time. A UV intensity sensor near the UV lamp collects real-time dynamic changes in UV irradiance, reflecting the actual output efficiency of the UV lamp and the absorption of UV energy by the water flow. The control unit generates control commands to increase the UV lamp's luminous power or extend the effective irradiation time based on the flow data and preset disinfection targets. When the UV intensity sensor detects a decrease in irradiance due to lamp aging, the control unit adjusts the luminous power parameters to ensure the disinfection effect consistently meets the preset standards for medical water, achieving dynamic stability and intelligent control of the disinfection effect. The control unit generates control commands based on flow and irradiance data, avoiding control errors caused by data distortion and further improving system stability. By adjusting disinfection parameters in real-time according to flow changes and water quality differences in different scenarios, it meets the requirements of high sterilization rate and strong stability for medical water while avoiding energy waste caused by fixed parameter operation, thus achieving an optimal balance between disinfection effect and operating efficiency. Attached Figure Description

[0016] Figure 1 This is an external schematic diagram of a medical water disinfection and sterilization control system provided in an embodiment of the present invention; Figure 2 This is an internal schematic diagram of a medical water disinfection and sterilization control system provided in an embodiment of the present invention. Detailed Implementation

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0020] Reference Figures 1-2 As shown.

[0021] The embodiments further illustrate the medical water disinfection and sterilization control system proposed in this invention.

[0022] A medical water disinfection and sterilization control system includes an ultraviolet disinfection unit, a data monitoring unit, and a control unit; The ultraviolet disinfection unit includes a tube body 111, which is located inside the housing 1. The tube body 111 has an inlet 112 and an outlet 113 at its two ends. An ultraviolet lamp 114 is arranged inside the tube body 111 along its axial direction. The ultraviolet lamp 114 is used to irradiate and disinfect the water flowing through the tube body 111. The data monitoring unit includes a flow sensor and an ultraviolet intensity sensor; A flow sensor is installed at the inlet 112 or the outlet 113. The flow sensor is used to detect the water flow rate in real time. The ultraviolet intensity sensor is located near the ultraviolet lamp 114 and is used to detect the ultraviolet radiation intensity in real time. The control unit is electrically connected to the data monitoring unit and the ultraviolet disinfection unit, and receives flow data from the flow sensor and ultraviolet irradiation intensity from the ultraviolet intensity sensor. Control commands are generated based on flow data, ultraviolet radiation intensity, and preset disinfection effect targets.

[0023] The control unit continuously receives flow data from the flow sensor and ultraviolet irradiance data from the ultraviolet intensity sensor. The flow data reflects the real-time flow status of water in the disinfection system, while the ultraviolet irradiance data reflects the actual output efficiency of the ultraviolet lamps. Control commands are generated based on the flow data, ultraviolet irradiance, and a preset disinfection effect target. The disinfection dose is calculated as: Disinfection dose = Ultraviolet irradiance × Water contact time. The water contact time is calculated as: Water contact time = Effective pipe length ÷ Water velocity; Water velocity = Volumetric flow rate ÷ Pipe cross-sectional area; Pipe cross-sectional area = π × Pipe inner diameter squared ÷ 4; Water velocity = 0.001 ÷ 0.00785 ≈ 0.127 m / s. The preset disinfection effect target is the minimum disinfection dose required for medical water, typically 30 mJ / cm². The control unit compares the real-time calculated actual disinfection dose with the preset target. The disinfection dose deviation is calculated as: Disinfection dose deviation = Actual disinfection dose - Preset target dose. Corresponding control commands are generated based on the magnitude and direction of the deviation. When the flow rate data shows an increase in water flow, leading to a higher flow velocity and a shorter water contact time, the actual disinfection dosage is calculated to be 20 mJ / cm², while the preset target is 30 mJ / cm². The disinfection dosage deviation is 20 - 30 = -10 mJ / cm², indicating insufficient disinfection dosage. The control unit generates a control command to increase the luminous power of the ultraviolet lamp, raising the ultraviolet irradiance intensity from 30 mW / cm² to 45 mW / cm², so that the actual disinfection dosage = 45 × (effective pipe length ÷ water flow velocity) = 30 mJ / cm², achieving the preset target. When the ultraviolet intensity sensor detects that the irradiance intensity has decreased due to lamp aging... The actual disinfection dose is calculated as 25 milliwatts per square centimeter (mJ / cm²), which is 25 × contact time = 25 millijoules per square centimeter. The disinfection dose deviation is 25 - 30 = -5 millijoules per square centimeter (mJ / cm²). The control unit generates a control command to extend the water flow contact time, thereby reducing the water flow rate by adjusting the valve opening and extending the contact time to restore the actual disinfection dose to 30 millijoules per square centimeter (mJ / cm²). When the actual disinfection dose is much higher than the preset target, for example, 50 millijoules per square centimeter (mJ / cm²), the disinfection dose deviation is 50 - 30 = 20 millijoules per square centimeter (mJ / cm²). The control unit generates a control command to reduce the luminous power of the ultraviolet lamp or increase the water flow rate, thereby avoiding energy waste.

[0024] The disinfection equipment is formed by connecting the inlet 112 and outlet 113 of its pipe body 111 in a serpentine series.

[0025] Pipe body 111 is the basic supporting unit of the disinfection equipment. Inlet 112 is located at one end of pipe body 111, serving as the inlet for water to enter the pipe body 111. Outlet 113 is located at the other end of pipe body 111, serving as the outlet for water to flow out of pipe body 111 after disinfection. Its diameter and position must be compatible with inlet 112 to ensure the stability of water flow inside pipe body 111 and to provide a connection interface for the next section of pipe body 111, thus realizing the construction of a series structure. Sequential serpentine series connection refers to connecting multiple pipe bodies 111 in a serpentine pattern, with the outlet 113 of one pipe body 111 connected to the inlet 112 of the next pipe body 111, creating a continuous serpentine flow path for water within the multiple pipe bodies 111.

[0026] The control command is used to dynamically adjust at least one of the following disinfection parameters: The flow rate of water through pipe 111 is controlled by adjusting the opening of the valves at the inlet and / or outlet. Control the on / off state of each ultraviolet lamp 114; Adjust the luminous power of each ultraviolet lamp 114 to change its irradiation intensity.

[0027] It also includes a data communication unit and a remote monitoring platform; The data communication unit is connected to the control unit and the data monitoring unit respectively. The data communication unit is used to send flow data, ultraviolet radiation intensity and the working status information of the control unit to the remote monitoring platform via wireless network. The remote monitoring platform is used to receive, store, and display data sent by the data communication unit, and generates alarm information when the data exceeds a preset threshold.

[0028] The data monitoring unit continuously collects water flow data and ultraviolet radiation intensity data. The control unit simultaneously records its own operational status information, including the generation logic of control commands, execution status, and parameter adjustment records. The data communication unit synchronously collects and packages the above data according to a preset sampling period. The sampling period can be flexibly set according to regulatory needs, for example, 1 second or 5 seconds, ensuring the real-time nature and integrity of the data. The data communication unit transmits the packaged flow data, ultraviolet radiation intensity, and control unit operational status information to the remote monitoring platform via a wireless network. The wireless network uses stable communication methods such as 5G and IoT to ensure low latency and high reliability of data transmission, avoiding regulatory delays caused by data loss or latency.

[0029] The remote monitoring platform first receives all data sent by the data communication unit, performs format and integrity checks on the data to ensure its accuracy, and stores the data in the database after successful verification. The storage process archives the data in chronological order, forming a complete operation log for easy traceability and auditing. The storage period is set according to the regulatory requirements of the medical industry. The remote monitoring platform displays all received data in real time through a visual interface, presenting information such as flow rate data, ultraviolet radiation intensity, and control unit operating status in the form of charts and numerical values, allowing supervisors to monitor the operating status of the on-site disinfection equipment in real time. The remote monitoring platform presets safety thresholds for various data types, such as a minimum threshold of 30mW / cm² for ultraviolet radiation intensity, a maximum threshold of 10m³ / h for water flow rate, and a response delay threshold of 0.5 seconds for the control unit. The platform continuously compares the real-time collected data with the preset thresholds. The anomaly determination result is calculated as real-time data minus the preset threshold. When the real-time data exceeds the upper limit of the preset threshold or falls below the lower limit, it is determined that the data exceeds the preset threshold, and the platform automatically generates an alarm message.

[0030] For example, if the real-time ultraviolet radiation intensity is 25 mW / cm², and the preset minimum threshold is 30 mW / cm², the calculated anomaly result is 25 - 30 = -5 mW / cm², which is less than 0. Therefore, the data is considered to exceed the preset threshold, and the platform generates an alarm message indicating insufficient ultraviolet radiation intensity. Similarly, if the real-time water flow rate is 12 m³ / h, and the preset maximum threshold is 10 m³ / h, the calculated anomaly result is 12 - 10 = 2 m³ / h, which is greater than 0. Therefore, the data is considered to exceed the preset threshold, and the platform generates an alarm message indicating excessive water flow. The alarm messages clearly indicate the type of abnormal data, the abnormal value, and the time of occurrence. Simultaneously, the platform pushes the alarm information to the supervisor's terminal devices, such as computers and mobile phones, ensuring that supervisors can promptly detect anomalies and take appropriate measures to guarantee the safety and compliance of the medical water disinfection process.

[0031] The flow rate of water through pipe 111 is controlled by adjusting the opening of the valves at the inlet and / or outlet, specifically including the following steps: Monitor the water flow disinfection reaction status inside pipe 111, determine the flow velocity range based on the water flow disinfection reaction status, and determine the initial adjustment direction of the valve opening based on the flow velocity range; Adjust the valve opening according to the initial adjustment direction to change the flow velocity of water through pipe 111 and capture the changing trend of water disinfection reaction state in real time; Determine the direction and degree of deviation between the changing trend and the preset disinfection response trend; If the deviation indicates insufficient disinfection reaction intensity, adjust the valve opening in the opposite direction to slow down the water flow rate, and determine the adjustment range according to the degree of deviation. If the deviation is due to excessive disinfection reaction intensity, adjust the valve opening in the positive direction to increase the water flow rate, and determine the adjustment range according to the degree of deviation. The water flow rate is matched with the disinfection reaction state. When the disinfection reaction reaches the preset stable state, the valve opening adjustment is stopped and the current opening is maintained. The disinfection reaction state is continuously monitored. If the disinfection reaction state deviates, the valve opening is adjusted accordingly to keep the disinfection reaction in the preset stable state.

[0032] The disinfection reaction status of the water flow within monitoring pipe 111 is characterized by parameters such as the attenuation value of ultraviolet irradiation intensity and the microbial index of the effluent. The disinfection dose is calculated as: ultraviolet irradiation intensity × water contact time. Here, water contact time = effective pipe length ÷ water flow velocity; therefore, the water flow velocity directly determines the disinfection dose. The flow velocity range is determined based on the water disinfection reaction status. For example, if the monitored disinfection dose is lower than the preset medical water standard of 30 mJ / cm², the current flow velocity is considered too high; if the disinfection dose is significantly higher than the standard value, the current flow velocity is considered too low. The initial adjustment direction of the valve opening is determined based on the flow velocity range: if the flow velocity is too high, the initial adjustment direction is to decrease the valve opening; if the flow velocity is too low, the initial adjustment direction is to increase the valve opening. Subsequently, the valve opening is adjusted according to the initial adjustment direction to change the flow velocity of water through pipe 111. For example, if the initial determination is that the flow velocity is too high, the valve opening is adjusted from 80% to 60%, so that the water flow velocity is reduced from 0.8m / s to 0.6m / s. At the same time, the changing trend of the water flow disinfection reaction state is captured in real time, and ultraviolet irradiation intensity and effluent water quality data are continuously collected to track the changes in disinfection dosage.

[0033] Determine the direction and degree of deviation between the changing trend and the preset disinfection response trend. The preset disinfection response trend is that the disinfection dosage is stably maintained within the acceptable range of 30mJ / cm² to 40mJ / cm². The deviation direction is divided into insufficient disinfection response intensity and excessive disinfection response intensity. The degree of deviation is calculated by the difference between the actual disinfection dosage and the preset target value, i.e., deviation degree = actual disinfection dosage - preset target dosage. The larger the absolute value of the difference, the higher the degree of deviation. If the deviation direction is insufficient disinfection response intensity, that is, the actual disinfection dosage is lower than the preset target value, it indicates that the current water flow rate is still too fast, and the contact time of the water flow in the pipe 111 is insufficient. At this time, the valve opening is adjusted in the opposite direction to slow down the water flow rate. The adjustment range is determined according to the degree of deviation. For example, if the actual disinfection dosage is 20mJ / cm² and the preset target value is 35mJ / cm², the deviation degree = 20 - 35 = -15mJ / cm². The deviation degree is large, so the valve opening is reduced by 15% to further reduce the flow rate and prolong the contact time. If the deviation is due to excessive disinfection reaction intensity, meaning the actual disinfection dose is much higher than the preset target value, it indicates that the current water flow rate is too slow, resulting in energy waste. In this case, adjust the valve opening in the positive direction to increase the water flow rate. The adjustment range is determined according to the degree of deviation. For example, if the actual disinfection dose is 60 mJ / cm² and the preset target value is 35 mJ / cm², the deviation is 60 - 35 = 25 mJ / cm². If the deviation is large, increase the valve opening by 20% to increase the water flow rate and reduce unnecessary energy consumption.

[0034] By adjusting the water flow rate to match the disinfection reaction state, when the disinfection reaction reaches the preset stable state, that is, when the disinfection dose is stable within the preset qualified range for multiple consecutive sampling cycles, the valve opening adjustment is stopped and the current opening is maintained. At the same time, the disinfection reaction state is continuously monitored. If the disinfection reaction state deviates, for example, due to changes in upstream water supply pressure causing an increase in flow rate and a drop in disinfection dose below the qualified range, the valve opening is adjusted accordingly, and the adjustment process is repeated to ensure that the disinfection reaction is always maintained in the preset stable state, thus ensuring the continuous and stable achievement of the disinfection effect of medical water.

[0035] Controlling the on / off state of each ultraviolet lamp 114 includes the following steps: The ultraviolet lamp 114 is divided into multiple continuous control zones according to the direction of water flow; The residence time of water in pipe 111 is determined based on water flow data, and the number of ultraviolet lamp areas to be turned on is determined based on the residence time and the preset disinfection effect target. The ultraviolet lamp 114 is divided into multiple continuous control zones according to the direction of water flow. This division is based on the actual flow path of the water in the pipe 111. Along the direction of the water flow from the inlet 112 to the outlet 113, the ultraviolet lamp 114 arranged along the axial direction in the pipe 111 is sequentially divided into independent control units connected end to end.

[0036] The residence time of water within pipe 111 is determined based on the water flow data. Residence time = Effective pipe length ÷ Water flow velocity. Here, the effective pipe length is the actual effective distance the water travels within a single pipe section 111, and the water flow velocity is the real-time flow velocity collected by the flow sensor. If the collected flow data is volumetric flow rate, the velocity = volumetric flow rate ÷ pipe cross-sectional area. The pipe cross-sectional area = π × (pipe inner diameter squared) ÷ 4. For example, if the effective pipe length is 5 meters and the water flow velocity is 0.5 meters per second, then the residence time = 5 ÷ 0. 0.5 = 10 seconds. If the volumetric flow rate is 3.6 cubic meters per hour and the inner diameter of the pipe is 0.1 meters, then the cross-sectional area of ​​the pipe is 3.14 × 0.1 × 0.1 ÷ 4 = 0.00785 square meters. Converting the volumetric flow rate to cubic meters per second, we get 3.6 ÷ 3600 = 0.001 cubic meters per second. Then, we calculate the flow velocity as 0.001 ÷ 0.00785 ≈ 0.127 meters per second. Finally, the residence time is 5 ÷ 0.127 ≈ 39.37 seconds. This gives us the actual residence time of the water in the pipe 111.

[0037] The number of UV lamp zones to be activated is determined based on the dwell time and the preset disinfection effect target. The disinfection dose = UV irradiance intensity × contact time, where the contact time is directly related to the dwell time. The preset disinfection effect target is the minimum disinfection dose required for medical water. Each UV lamp 114 in each control zone provides a fixed irradiance intensity. For example, if the irradiance intensity of a single control zone is 10 mW per square centimeter, and the calculated dwell time is 3 seconds, then the disinfection dose provided by a single control zone = 10 × 3 = 30 mJ per square centimeter, which just meets the preset target. In this case, only one UV lamp 114 in the control zone needs to be activated. If the dwell time is 1.5 seconds, then a single control zone can only provide a disinfection dose of 15 mJ per square centimeter, which cannot meet the target. Therefore, two UV lamps 114 in the control zones need to be activated so that the total disinfection dose = 10 × 1.5 × 2 = 30 mJ per square centimeter, achieving the preset disinfection effect target. At the same time, it avoids energy waste caused by activating too many control zones, achieving the optimal balance between disinfection effect and energy consumption.

[0038] After the water flows through the control area, the control unit receives the ultraviolet disinfection effect corresponding to that control area and determines whether the ultraviolet disinfection effect of the water flowing through the control area has reached the stage standard. This includes the following steps: The initial irradiance of the ultraviolet lamps in the control area was collected before the water flow entered the control area, and the initial water quality-related feedback data before the water flow entered the control area were also collected. After the water flows through the control area, the current irradiance of the ultraviolet lamps in the control area is collected in real time. The irradiance attenuation difference is obtained by comparing the current irradiance with the initial irradiance. Determine whether the difference in irradiance intensity attenuation has reached the stage standard; If the difference in irradiance intensity attenuation does not reach the preset threshold, it is determined that the ultraviolet disinfection effect of the water flowing through the control area has reached the stage standard. If the difference in irradiance intensity attenuation reaches the preset threshold, the ultraviolet disinfection effect of the water flowing through the control area is determined to have reached the stage standard. If the ultraviolet disinfection effect of the water flow through the control area does not meet the stage standard, then turn on the ultraviolet lamp 114 in the adjacent control area and supplement the disinfection dose. If the ultraviolet disinfection effect of the water flow through the control area reaches the stage standard, the ultraviolet lamps 114 in the adjacent control area will be temporarily suspended.

[0039] Before the water flows into the control area, the initial irradiance of the ultraviolet lamps in the control area is collected, along with initial water quality feedback data, including turbidity and microbial content, to establish a baseline state for disinfection in the control area. After the water flows through the control area, the current irradiance of the ultraviolet lamps in the control area is collected in real time. The current irradiance is compared with the initial irradiance to obtain the irradiance attenuation difference, which is calculated as: initial irradiance - current irradiance. The magnitude of this difference directly reflects the degree of absorption and consumption of ultraviolet energy by the water flow. Microbial impurities in the water flow absorb ultraviolet energy, causing the irradiance to attenuate. The larger the attenuation difference, the higher the content of pollutants to be disinfected in the water flow, and the more ultraviolet energy is consumed during the disinfection process.

[0040] To determine whether the difference in irradiance intensity attenuation meets the phased standard, a preset threshold is used as the core criterion. This preset threshold is set according to the disinfection requirements of medical water, for example, 5 milliwatts per square centimeter. If the difference in irradiance intensity attenuation does not reach the preset threshold (i.e., the difference in irradiance intensity attenuation is <5 milliwatts per square centimeter), it indicates that the pollutant content in the water flow is low, and the UV lamps 114 in this control area have completed sufficient disinfection. Therefore, the UV disinfection effect of the water flow passing through this control area is determined to have met the phased standard. If the difference in irradiance intensity attenuation reaches the preset threshold (i.e., the difference in irradiance intensity attenuation is ≥5 milliwatts per square centimeter), it indicates that the pollutant content in the water flow is high, and the UV energy in this control area has been largely consumed, failing to complete sufficient disinfection. Therefore, the UV disinfection effect of the water flow passing through this control area is determined to have not met the phased standard.

[0041] If the ultraviolet disinfection effect of the water flowing through the control area does not meet the stage standard, then the ultraviolet lamps 114 in the adjacent control area will be turned on, and the disinfection dose will be supplemented. The disinfection dose = ultraviolet irradiation intensity × contact time. Based on the current insufficient disinfection dose, the irradiation intensity will be supplemented by the ultraviolet lamps 114 in the adjacent control area, extending the total contact time so that the total disinfection dose reaches the preset standard for medical water. For example, if the current disinfection dose provided by the control area is 20 mJ / cm², the preset standard is 30 mJ / cm², and the disinfection dose gap is 10 mJ / cm², then the ultraviolet lamps 114 in the adjacent control area will supplement the disinfection dose by 10 mJ / cm² to ensure that the overall disinfection effect meets the standard. If the ultraviolet disinfection effect of the water flowing through the control area meets the stage standard, then the ultraviolet lamps 114 in the adjacent control area will be temporarily deactivated to avoid unnecessary energy consumption and achieve the optimal balance between disinfection effect and energy consumption.

[0042] Adjusting the luminous power of each ultraviolet lamp 114 to change its irradiation intensity specifically includes the following steps: The real-time operating temperature of the ultraviolet lamp 114 is collected, and the degree of influence of temperature on the luminous power is determined based on the real-time operating temperature and the current irradiation intensity of the ultraviolet lamp 114. The adjustment range of luminous power is determined based on the degree of influence, specifically including the following steps: Determine the trend of temperature's influence on luminous power based on the degree of influence, and clarify the rise and fall of the degree of influence with temperature. The temperature stability stage and temperature fluctuation stage are determined based on the influence trend, the rise and fall pattern, and the real-time operating temperature of the ultraviolet lamp. During the temperature stabilization phase, a fixed adjustment amplitude is determined based on the strength of the influence. During temperature fluctuations, the rate of change of the adjustment amplitude is dynamically adjusted according to the real-time changes in the degree of influence, and the luminous power of the ultraviolet lamp 114 is dynamically adjusted according to the adjustment amplitude to change its irradiation intensity.

[0043] The real-time operating temperature of the ultraviolet lamp 114 is collected by a temperature sensor to obtain real-time temperature data of the lamp tube or ballast. The current irradiation intensity of the ultraviolet lamp 114 is obtained by a UV intensity sensor near the ultraviolet lamp 114. The degree of influence of temperature on luminous power is determined based on the real-time operating temperature and the current irradiation intensity. The determination of the degree of influence follows the luminous characteristics of the ultraviolet lamp, that is, there is a non-linear relationship between the luminous power of the ultraviolet lamp and the operating temperature. Usually, the luminous power is stable within the rated temperature range. After exceeding the rated range, the luminous power decreases with the increase or decrease of temperature. The degree of influence = rated irradiation intensity - current irradiation intensity. The larger the absolute value of the difference, the stronger the influence of temperature on luminous power. For example, if the rated irradiation intensity of the ultraviolet lamp 114 is 30 milliwatts per square centimeter, the current irradiation intensity is 27 milliwatts per square centimeter, and the real-time operating temperature is 45 degrees Celsius, which exceeds the rated operating temperature of 35 degrees Celsius, then the degree of influence = 30 - 27 = 3 milliwatts per square centimeter, which is judged as a moderate degree of influence.

[0044] The adjustment range of luminous power is determined based on the degree of influence. The trend of temperature's influence on luminous power is determined according to the degree of influence, and the rise and fall law of the degree of influence with temperature is clarified. For example, by fitting historical data, it is found that for every 1 degree Celsius increase in temperature, the luminous power decreases by 0.2 milliwatts per square centimeter. The rise and fall law of the degree of influence increasing and the luminous power decreasing when the temperature rises is clarified. Based on the influence trend, the rise and fall law, and the real-time operating temperature of the ultraviolet lamp 114, the temperature stability stage and the temperature fluctuation stage are determined. The temperature stability stage refers to the real-time operating temperature fluctuation amplitude being less than the preset threshold in multiple consecutive sampling periods. For example, the temperature fluctuation amplitude is less than 2 degrees Celsius in 5 consecutive sampling periods, which is judged as the temperature stability stage. The temperature fluctuation stage refers to the real-time operating temperature fluctuation amplitude being greater than or equal to the preset threshold. For example, the temperature frequently changes between 30 degrees Celsius and 50 degrees Celsius, which is judged as the temperature fluctuation stage.

[0045] During the temperature stabilization phase, a fixed adjustment amplitude is determined based on the strength of the influence. The fixed adjustment amplitude is calculated as: influence level ÷ rated influence coefficient. For example, if the influence level is 3 milliwatts per square centimeter and the rated influence coefficient is 1, then the fixed adjustment amplitude is 3 milliwatts per square centimeter. The control unit increases the luminous power of the ultraviolet lamp 114 according to this fixed amplitude to restore the irradiation intensity to the rated standard. For example, the luminous power is increased from 90% to 100% to compensate for the power attenuation caused by temperature.

[0046] During temperature fluctuations, the rate of change of the adjustment amplitude is dynamically adjusted based on the real-time changes in the degree of influence. The rate of change = change in degree of influence ÷ change in time. For example, if the degree of influence changes from 2 milliwatts per square centimeter to 5 milliwatts per square centimeter in 1 second, the change in degree of influence = 5 - 2 = 3 milliwatts per square centimeter. If the change in time is 1 second, the rate of change is 3 milliwatts per square centimeter per second. The control unit adjusts the adjustment amplitude in real time according to this rate of change. When the temperature rises rapidly and the degree of influence increases rapidly, the rate of increase of the adjustment amplitude is accelerated to quickly compensate for the luminous power. When the temperature drops rapidly and the degree of influence weakens, the rate of decrease of the adjustment amplitude is accelerated to avoid excessive power and energy waste. Finally, the luminous power of the ultraviolet lamp 114 is dynamically adjusted according to the adjustment amplitude to change its irradiation intensity, so that the irradiation intensity of the ultraviolet lamp 114 is always stable within the preset disinfection requirement range, ensuring the continuous and stable disinfection effect of medical water.

[0047] It also includes the following steps: After generating alarm information, it is sent to the platform display interface to present the location and type of the abnormality in a visual form, and the warning information is transmitted to the control unit; After receiving the alarm information, the control unit initiates the corresponding action and locks the operating parameters of the ultraviolet lamp 114.

[0048] The control unit receives the inlet water flow rate from the flow sensor in real time. Based on the inlet water flow rate and the internal volume of the disinfection unit pipe, it calculates the theoretical residence time of the water within the ultraviolet disinfection chamber. It also reads the real-time ultraviolet irradiation intensity from the ultraviolet intensity sensor. Multiplying the irradiation intensity by the water residence time yields the actual ultraviolet disinfection dose achievable with the current water flow. This actual disinfection dose is then compared to the pre-stored target disinfection dose of 30 mJ / cm² for medical water to calculate the disinfection dose deviation. When the actual disinfection dose is less than the target disinfection dose, and the flow rate is within the adjustable range, the control unit outputs a deceleration control signal, gradually reducing the valve opening and decreasing the water flow velocity within the pipe. This prolongs the residence time of the water within the disinfection chamber until the calculated actual disinfection dose rises to the acceptable range for the target dose. When the actual disinfection dose is greater than the target disinfection dose, the valve opening is gradually increased to raise the water flow velocity. In the zoned lamp start / stop control process, the control unit pre-divides multiple independent lamp control zones according to the volume of the cavity covered by a single group of lamps. When the flow rate is low and the water flow residence time is long, only a small number of lamp zones along the water inlet direction are turned on. After the water flow passes through the irradiation zone of the turned-on lamps, the ultraviolet intensity sensors arranged at the rear of each zone read the emitted irradiance of the zone and compare the irradiance attenuation difference between the front and rear zones to determine the cumulative disinfection dose that the water flow has acquired at the current stage. If the cumulative disinfection dose still does not reach the target threshold after passing through the current zone, the downstream adjacent lamp control zones are turned on sequentially to supplement the ultraviolet irradiation dose until the cumulative disinfection dose reaches the target. When the flow rate is high, more lamp zones are turned on simultaneously to shorten the required water flow residence time.

[0049] Upon determining that the data exceeds a preset threshold, an alarm message is generated. This alarm message includes key elements such as the location, type, value, and time of the anomaly. For example, when the ultraviolet radiation intensity is below 30 mW / cm², an alarm message is generated containing the ultraviolet disinfection unit number, the type of radiation intensity anomaly, the real-time radiation intensity value, and the specific time. After generating the alarm message, it is sent to the platform display interface, where the location and type of the anomaly are presented visually. The platform display interface uses map markings, icon highlighting, or color warnings to intuitively show the specific location of the anomaly. Simultaneously, the anomaly type is clearly marked with text, numbers, or graphics, such as insufficient ultraviolet radiation intensity or excessive water flow. For example, the anomaly location is marked with a red icon in the disinfection equipment layout diagram on the interface, along with a text prompt indicating abnormal ultraviolet radiation intensity, allowing supervisors to quickly locate the abnormal area.

[0050] The alarm information is transmitted to the control unit via wired or wireless communication to ensure delivery and provide instructions for automated on-site response. Upon receiving the alarm, the control unit initiates corresponding procedures, locking the operating parameters of the UV lamp 114. Locking the operating parameters means the control unit fixes key parameters such as the UV lamp 114's luminous power and on / off status to their current values, preventing automatic adjustment and avoiding fluctuations in disinfection effectiveness or equipment damage caused by parameter adjustments in abnormal conditions. For example, if the difference in UV irradiance attenuation reaches a preset threshold, indicating insufficient disinfection and triggering an alarm, the control unit receives the alarm and locks the UV lamp 114's luminous power parameter to maintain stable power output. Simultaneously, it initiates emergency procedures, such as activating the backup UV lamp 114, turning on additional disinfection auxiliary modules, or triggering an audible and visual alarm to alert on-site personnel. Locking the operating parameters of UV lamp 114 maintains the stability of the disinfection process under abnormal conditions, preventing misjudgments by the automatic adjustment logic under abnormal data interference, which could lead to insufficient disinfection dosage or excessive energy consumption. For example, if the parameters are not locked and automatic adjustment continues, abnormal irradiance data may continuously trigger adjustment commands, causing repeated fluctuations in the power of UV lamp 114, further exacerbating the instability of the disinfection effect. Locking the parameters maintains a stable disinfection output, buying time for subsequent manual troubleshooting and fault repair, while ensuring the basic disinfection effect requirements of medical water and avoiding water safety risks during abnormal periods.

[0051] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0052] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medical water disinfection and sterilization control system, characterized in that, It includes an ultraviolet disinfection unit, a data monitoring unit, and a control unit; The ultraviolet disinfection unit includes a tube (111), with an inlet (112) and an outlet (113) at both ends of the tube (111). An ultraviolet lamp (114) is arranged inside the tube (111) along its axial direction. The ultraviolet lamp (114) is used to irradiate and disinfect the water flowing through the tube (111). The data monitoring unit includes a flow sensor and an ultraviolet intensity sensor; The flow sensor is installed at the inlet (112) or outlet (113) and is used to detect the water flow rate in real time. The ultraviolet intensity sensor is located near the ultraviolet lamp (114) and is used to detect the ultraviolet radiation intensity in real time. The control unit is electrically connected to the data monitoring unit and the ultraviolet disinfection unit, and receives flow data from the flow sensor and ultraviolet irradiation intensity from the ultraviolet intensity sensor. Control commands are generated based on flow data, ultraviolet radiation intensity, and preset disinfection effect targets.

2. The medical water disinfection and sterilization control system according to claim 1, characterized in that, The disinfection equipment is formed by connecting the inlet (112) and outlet (113) of its pipe body (111) in a serpentine series.

3. The medical water disinfection and sterilization control system according to claim 1, characterized in that, The control command is used to dynamically adjust at least one of the following disinfection parameters: The flow rate of water through the pipe body (111) can be controlled by adjusting the opening of the valves at the inlet and / or outlet. Control the on / off state of each of the ultraviolet lamps (114); Adjust the luminous power of each of the ultraviolet lamps (114) to change its irradiation intensity.

4. The medical water disinfection and sterilization control system according to claim 1, characterized in that, It also includes a data communication unit and a remote monitoring platform; The data communication unit is connected to the control unit and the data monitoring unit respectively. The data communication unit is used to send flow data, ultraviolet radiation intensity and the working status information of the control unit to the remote monitoring platform through a wireless network. The remote monitoring platform is used to receive, store, and display data sent by the data communication unit, and generates alarm information when the data exceeds a preset threshold.

5. A medical water disinfection and sterilization control system according to claim 3, characterized in that, The flow rate of water through the pipe body (111) is controlled by adjusting the opening degree of the valves at the inlet and / or outlet, specifically including the following steps: Monitor the water flow disinfection reaction state inside the pipe (111), determine the flow velocity range based on the water flow disinfection reaction state, and determine the initial adjustment direction of the valve opening based on the flow velocity range; Adjust the valve opening according to the initial adjustment direction to change the flow velocity of water through the pipe (111) and capture the changing trend of the water disinfection reaction state in real time. Determine the direction and degree of deviation between the changing trend and the preset disinfection response trend; If the deviation indicates insufficient disinfection reaction intensity, adjust the valve opening in the opposite direction to slow down the water flow rate, and determine the adjustment range according to the degree of deviation. If the deviation is due to excessive disinfection reaction intensity, adjust the valve opening in the positive direction to increase the water flow rate, and determine the adjustment range according to the degree of deviation. The water flow rate is matched with the disinfection reaction state. When the disinfection reaction reaches the preset stable state, the valve opening adjustment is stopped and the current opening is maintained. The disinfection reaction state is continuously monitored. If the disinfection reaction state deviates, the valve opening is adjusted accordingly to keep the disinfection reaction in the preset stable state.

6. The medical water disinfection and sterilization control system according to claim 3, characterized in that, Controlling the on / off state of each of the ultraviolet lamps (114) specifically includes the following steps: The ultraviolet lamp (114) is divided into multiple continuous control zones according to the direction of water flow; The residence time of water in the pipe (111) is determined based on the water flow data, and the number of ultraviolet lamp areas to be turned on is determined based on the residence time and the preset disinfection effect target. After the water flows through the control area, the control unit receives the ultraviolet disinfection effect corresponding to the control area and determines whether the ultraviolet disinfection effect of the water flowing through the control area has reached the stage standard. If the ultraviolet disinfection effect of the water flow through the control area does not meet the stage standard, then turn on the ultraviolet lamp (114) in the adjacent control area and supplement the disinfection dose. If the ultraviolet disinfection effect of the water flow through the control area reaches the stage standard, the ultraviolet lamps in the adjacent control area shall be temporarily suspended (114).

7. A medical water disinfection and sterilization control system according to claim 6, characterized in that, To determine whether the ultraviolet disinfection effect of water flowing through the controlled area has met the phased standards, the following steps are required: The initial irradiance of the ultraviolet lamps in the control area was collected before the water flow entered the control area, and the initial water quality-related feedback data before the water flow entered the control area were also collected. After the water flows through the control area, the current irradiance of the ultraviolet lamps in the control area is collected in real time. The irradiance attenuation difference is obtained by comparing the current irradiance with the initial irradiance. Determine whether the difference in irradiance intensity attenuation has reached the stage standard; If the difference in irradiance intensity attenuation does not reach the preset threshold, it is determined that the ultraviolet disinfection effect of the water flowing through the control area has reached the stage standard. If the difference in irradiance intensity attenuation reaches a preset threshold, the ultraviolet disinfection effect of the water flowing through the control area is determined to have reached the stage standard.

8. A medical water disinfection and sterilization control system according to claim 3, characterized in that, Adjusting the luminous power of each of the ultraviolet lamps (114) to change its irradiation intensity specifically includes the following steps: The real-time operating temperature of the ultraviolet lamp (114) is collected, and the influence of temperature on the luminous power is determined based on the real-time operating temperature and the current irradiation intensity of the ultraviolet lamp (114). The adjustment range of the luminous power is determined based on the degree of influence, and the luminous power of the ultraviolet lamp (114) is dynamically adjusted according to the adjustment range to change its irradiation intensity.

9. A medical water disinfection and sterilization control system according to claim 8, characterized in that, The adjustment range of luminous power is determined based on the degree of influence, specifically including the following steps: Determine the trend of temperature's influence on luminous power based on the degree of influence, and clarify the rise and fall of the degree of influence with temperature. The temperature stability stage and temperature fluctuation stage are determined based on the influence trend, the rise and fall pattern, and the real-time operating temperature of the ultraviolet lamp. During the temperature stabilization phase, a fixed adjustment amplitude is determined based on the strength of the influence. During temperature fluctuations, the rate of change of the adjustment amplitude is dynamically adjusted based on real-time changes in the degree of influence.

10. A medical water disinfection and sterilization control system according to claim 4, characterized in that, It also includes the following steps: After generating alarm information, it is sent to the platform display interface to present the location and type of the abnormality in a visual form, and the warning information is transmitted to the control unit; After receiving the alarm information, the control unit initiates the corresponding action and locks the operating parameters of the ultraviolet lamp (114).

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