Bedside non-contact disinfection device

Abstract

The present invention provides a bedside non-contact disinfection apparatus, and relates to the technical field of disinfection equipment, the bedside non-contact disinfection apparatus comprises a box body, a liquid supply pump for conveying a disinfection liquid is arranged in the box body, and a processor, a millimeter wave radar and an infrared thermal imaging array are integrated on the box body; the enclosure mechanism comprises a curtain body which can be unfolded to form a closed disinfection area, and an embedded atomizing nozzle and an ultraviolet disinfection module which are connected with the curtain body in a matched manner; the processor is respectively connected with the infrared thermal imaging array, the millimeter wave radar, the liquid supply pump and the ultraviolet disinfection module so as to ensure that the disinfection process is safe and effective. In order to solve the problem of dynamic response defects, infrared thermal imaging is utilized to capture static personnel body temperature distribution characteristics to calculate thermal imaging detection probability, target speed is analyzed based on millimeter wave radar data to detect vital signs and recognize hidden personnel, meanwhile, motion intensity is quantified through motion compensation, radar speed measurement errors are corrected, and the detection accuracy is improved. And the detection probability is dynamically decided, so that high-intensity sterilization is started in an unmanned environment, and the risk of mistaken irradiation of personnel is solved.

Description

Technical Field

[0001] The invention relates to the technical field of disinfection equipment, and in particular to a bedside contactless disinfection device. Background Art

[0002] In modern medical environments, traditional disinfection methods have many limitations and defects, which seriously affect disinfection efficiency, safety and environmental sustainability.

[0003] First, manual spraying disinfection is inefficient: According to the WHO Guidelines for Disinfection of Medical Environments, manual spraying disinfection takes 30 minutes per bed, and ultraviolet disinfection takes 15 minutes and requires clearing the area, which is not only time-consuming but also increases the labor intensity of personnel, making it difficult to meet the needs of high-frequency disinfection. Secondly, traditional disinfection methods have serious safety hazards, especially the problem of misuse of ultraviolet rays. The Lancet report pointed out that every year around the world, there are cases of eye burns to medical staff due to misuse of ultraviolet rays. In addition, long-term or high-intensity ultraviolet exposure may also cause skin erythema and burns, and even increase the risk of skin cancer.

[0004] In terms of disinfection effect, traditional methods are difficult to fully disinfect all corners in a complex environment, and are prone to disinfection blind spots. They also have limited disinfection effects on pathogens in the air and cannot effectively reduce the risk of airborne transmission. Traditional disinfection methods also have the problem of waste of resources. Due to the lack of precise flow control, it is easy to cause excessive use of disinfectant, which increases costs and wastes resources. In addition, manual spraying disinfection is difficult to ensure uniform distribution of disinfectant, affecting the disinfection effect.

[0005] In order to solve the above defects, CN112237644B in the prior art discloses a disinfection robot and its disinfection method, describes the robot's mobile chassis structure, the various modules of the disinfection assembly (spray disinfection module, circulation disinfection module, ultraviolet lamp disinfection module) and their specific structures and functions, and explains the various disinfection modes that the robot can execute in its working mode section, including single mode and combination mode, while the disinfection method explains how the robot executes the corresponding disinfection mode according to specific instructions or preset conditions, as well as the specific operation steps in different modes. Similarly, CN112587693A in the prior art discloses a design including a mobile lifting mechanism, a disinfection mechanism and a protective adjustment mechanism, which can be fully automatically lifted and lowered by motor control to adapt to various specifications of beds with different heights, and adopts two disinfection methods of disinfection by spraying disinfectant and disinfection by ultraviolet irradiation, and achieves comprehensive disinfection of the bed by spraying disinfectant and disinfecting with ultraviolet lamps.

[0006] However, there are still the following deficiencies in actual work: For the prior art CN112237644B, it has the following problems: ① Dynamic response defects: The disinfection robot relies on laser radar and ultrasonic sensors to achieve navigation and obstacle avoidance, but does not explicitly consider multimodal biometric detection (such as thermal radiation, object micro-motion). The start and stop of its ultraviolet disinfection mode is mainly based on preset paths or manual instructions, and lacks the ability to judge the presence of personnel in real time. For example, the ultraviolet lamp continues to work after being exposed through the mechanical structure (external tube lifting and decorative tube rotation). At this time, if a person mistakenly enters the disinfection area, it cannot timely identify static or low-activity targets (such as sitting and lying patients) by relying only on the basic program, resulting in the risk of accidental ultraviolet irradiation. ② Defects in the disinfection mode switching mechanism: The disinfection mode switching proposed by the prior art depends on preset conditions (such as position arrival and time triggering), lacks environmental self-adaptation capabilities, and when its cyclic disinfection mode is started, it only exposes the air inlet and turns on the circulating fan by rotating the decorative tube, and does not consider the real-time environmental parameters (such as temperature and humidity) to dynamically adjust the disinfection intensity, resulting in insufficient time and space isolation between ultraviolet disinfection and personnel activities. If the response is delayed, the disinfection will be interrupted in time. ③ Defects in UV disinfection safety: The UV lamp disinfection module proposed in the prior art adopts a physical structure design (the decorative tube rotates to hide the UV lamp), but does not consider the monitoring and emergency mechanism during the disinfection process. If the mechanical structure fails (such as the failure of the decorative tube causing the UV lamp to be accidentally exposed), there is a lack of feedback capability, resulting in continuous radiation leakage.

[0007] In addition, although the prior art CN112587693A can form an enclosure outside the target bed to prevent ultraviolet leakage or diffusion of disinfectant, the disinfection device needs to be moved to the side of the target bed before the enclosure and disinfection operation can be performed. However, if the disinfection device can completely enclose the target bed, the volume of the entire device will need to be very large, and it is difficult to circulate between various wards, and the scope of application is very limited; in addition, the disinfection device adopts a top spraying method, in which the disinfectant cannot reach the bottom of the bed, and there is a large disinfection dead angle; the disinfection device can only disinfect the target bed within the enclosure, and cannot simultaneously disinfect the inside and outside of the curtain during operation, and staff are required to disinfect the wards separately afterwards. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention aims to provide a bedside contactless disinfection device to solve the existing problems.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows: A bedside contactless disinfection device, comprising: The box has a built-in liquid supply pump for delivering disinfectant, and is integrated with a processor, a millimeter-wave radar, and an infrared thermal imaging array; The enclosure mechanism includes a curtain body that can be unfolded to form a closed disinfection area, an embedded atomizing nozzle connected to the curtain body, and a UV disinfection module; the processor is respectively connected to the infrared thermal imaging array, the millimeter wave radar, the liquid supply pump, and the UV disinfection module to ensure that the disinfection process is safe and effective. The process is as follows: The infrared thermal imaging array is set to collect the thermal radiation characteristics in the target area at a specific frame rate to obtain a sequence-level grayscale image representing the thermal imaging data of the personnel. The collected grayscale image is preprocessed, and 64 key pixels are selected from the grayscale image as the region of interest. The average grayscale value of the key pixels is calculated. If the average grayscale value of a certain area is close to 1, it is considered that there are thermal radiation characteristics of personnel in the target area, and the thermal imaging detection probability is generated. ; Extract the instantaneous speed of each person detected by the millimeter-wave radar, calculate the average speed of all people, and generate the radar detection probability by comparing the absolute deviation between the instantaneous speed of each person and the average speed , where the smaller the deviation value is, the higher the probability that a person exists in the target area; Construct a weighted fusion model:

[0010] Generates the probability of a person appearing in the target area , where is the thermal imaging weight coefficient, is the radar weight coefficient, η is the motion compensation factor, is the motion compensation probability, is the Sigmoid function; when When the value exceeds the decision threshold, the processor triggers the safety mechanism, immediately cuts off the power supply of the UV disinfection module, and simultaneously turns off the power supply of the liquid supply pump to stop spraying the disinfectant. Otherwise, the disinfection operation is performed according to the disinfection parameters.

[0011] Compared with the prior art, the beneficial effects of the present invention include: In order to solve the problem of dynamic response defects, the present invention uses infrared thermal imaging to capture the body temperature distribution characteristics of static personnel and calculate the thermal imaging detection probability. It analyzes the target speed based on millimeter-wave radar data to detect vital signs and identify hidden personnel. At the same time, it quantifies the intensity of movement through motion compensation, corrects the radar speed measurement error, and dynamically decides the detection probability to ensure that high-intensity disinfection is initiated in an unmanned environment and solves the risk of accidental exposure of personnel.

[0012] In order to solve the defects of the disinfection mode switching mechanism, the present invention proposes to use real-time feedback data from temperature and humidity sensors to dynamically adjust the spray flow rate of disinfectant, such as reducing the atomization amount in a high humidity environment to prevent condensation, triggering the mode switching by calculating the decision threshold, and synchronously terminating the spraying through the internal spray hood to avoid waste of disinfectant.

[0013] To solve the safety defects of ultraviolet disinfection: the present invention sets the mode switching logic. When the probability of human presence exceeds a threshold, the ultraviolet power supply is cut off and the spraying is terminated. Conversely, the ultraviolet lamp tube is unfolded and folded by a motor-driven flipping and expansion. According to the control logic, ultraviolet disinfection is ensured under safe conditions.

[0014] In order to solve the problem that disinfection cannot be completely achieved due to the existence of disinfection dead corners, the present invention proposes that a C-shaped inner spray cover is integrated above and below the inner wall of the plastic curtain body, and the gas-liquid control component guides the disinfectant into the inner spray cover, and then the inner spray cover can spray the disinfectant into the closed area from the top and bottom. The disinfectant sprayed from the top can fall from top to bottom to perform three-dimensional disinfection, and finally fall on the target bed to disinfect the surface of the target bed; the disinfectant sprayed from the bottom can be sprayed to the ground and the bottom of the target bed, so that the disinfection is more comprehensive; At the same time, in terms of the spatial range, the combination of the inner spray hood and the curtain body allows medical staff to pull up the curtain body to complete the simultaneous layout of the closed area and the spray pipeline during daily ventilation, which is easy to operate; when not disinfected, the inner spray hood can be folded up with the curtain body and does not occupy space; at the same time, an outer spray hood is set on the outside of the curtain body. During disinfection, not only the inner spray hood is used to spray and disinfect the inside of the curtain body, but also the outer spray hood is used to spray and disinfect the outside of the curtain body, thereby completing the disinfection of the ward, and there is no need to disinfect the ward separately.

[0015] 5. An operating component is proposed to position the gathered curtain body, and by taking advantage of the gathered characteristics of the curtain body, the operating component is used to quickly squeeze out the residual liquid in the inner spray cover and the outer spray cover, thereby avoiding liquid residue. The squeezed liquid will adhere to the curtain body, heat the curtain body, and make the liquid evaporate quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the disinfection logic flow of the present invention; Figure 2 This is a schematic diagram of the overall top view of the structure of a bedside contactless disinfection device of the present invention; Figure 3 It is a structural schematic diagram of the curtain body of the present invention in an unfolded state; Figure 4 It is a schematic diagram of the structure of the operating components of the present invention; Figure 5It is a schematic diagram of a top view of the connecting structure of the first moving block and the second moving block of the present invention; Figure 6 It is a schematic diagram of the structure of the curtain body in the storage state of the present invention; Figure 7 It is a schematic diagram of the internal structure of the box of the present invention; Figure 8 This is a schematic diagram of the structure of the mobile disinfection component of the present invention when it is folded up and viewed from above; Fig. 9 This is a schematic diagram of the mobile disinfection component of the present invention when viewed from above; Fig.10 It is a schematic diagram of the bottom structure of the flip board in the unfolded state of the present invention; Fig.11 It is a schematic diagram of the movable vertical plate connection structure of the present invention.

[0018] Notes in the figure: 1. Box body, 11. Storage box, 111. Assembly block, 12. Upper cover body, 13. Three-way valve, 14. Liquid supply pump, 15. Air duct, 16. Fan, 17. Liquid replenishing valve; 2. operating assembly, 21. end plate, 211. first vertical slot, 212. second vertical slot, 22. first moving block, 221. positioning socket, 222. positioning slot, 23. first screw, 231. third moving block, 24. telescopic assembly rod, 25. second moving block, 26. second screw, 27. storage box, 28. vertical partition, 281. stop vertical plate, 282. second avoidance slot, 29. binding strap, 291. positioning plug column; 3. Transfer pipe, 31. First valve body, 32. Second valve body; 4. Mobile disinfection component, 41. Mobile vertical plate, 411. First avoidance groove, 42. Flip plate, 421. Groove, 422. First motor, 43. First ultraviolet lamp, 44. Storage plate, 45. Expansion rack, 451. Tooth groove, 452. Second ultraviolet lamp, 46. Second motor, 47. Guide wheel; 5. Enclosure mechanism, 51. Curtain body, 52. Inner spray hood, 53. Outer spray hood, 54. Upper guide rail, 541. Walking trough, 55. Lower guide rail. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] As an embodiment of the present invention, Figure 1 - Figure 3 As shown, the present invention provides a bedside contactless disinfection device, comprising: The box 1 includes a storage box 11 for storing disinfectant, and an upper cover 12 is provided on the top of the storage box 11. A gas-liquid control component for outputting disinfectant or airflow is installed inside the upper cover 12. The box is built-in and integrated with a processor using the ARM Cortex-A72 architecture and a main frequency of 2.0GHz, and a millimeter-wave radar and an infrared thermal imaging array are provided on the outer edge of the box. The infrared thermal imaging array preferably adopts a FLIR Lepton 3.5 model and an infrared thermal imaging module with a field of view of 120°×90°, and the millimeter-wave radar preferably adopts a 77GHz IWR1843 industrial millimeter-wave radar chip. A liquid level sensor for monitoring the liquid level of the disinfectant is installed inside the storage box.

[0021] The enclosure mechanism 5 is arranged outside the target bed, and includes a curtain body 51 that can be unfolded to form a closed disinfection area, an embedded atomizing nozzle, and a UV disinfection module. Among them, the top of the curtain body 51 is slidably connected to the upper guide rail 54, and the bottom is slidably connected to the lower guide rail 55. The top and bottom of the inner wall of the curtain body 51 are both provided with a flexible inner spray cover 52, and the outer wall of the curtain body 51 is provided with an outer spray cover 53. The spraying area of ​​the outer spray cover 53 is located in the middle of the outer wall of the curtain body 51. The curtain body 51 is an opaque flexible plastic structure. The inner spray cover 52 is connected to the gas-liquid control component through the transfer tube 3, and a temperature and humidity sensor of model SHT35 is provided on the outer edge of the curtain. A flow sensor for monitoring the flow of disinfectant is installed in the flow channel formed by the connection between the storage box and the transfer tube.

[0022] It is understandable that when the curtain body 51 is pulled outward to form a closed disinfection area, the two groups of inner spray hoods 52 spray disinfectant or input air into the closed area. The outer spray hood 53 is arranged on the outside of the curtain body 51. During the disinfection process, not only can the inner spray hood 52 spray liquid to spray disinfectant inside the curtain body 51, but also the outer spray hood 53 can spray disinfectant outside the curtain body 51, thereby completing the disinfection process of the ward, and there is no need to disinfect the ward separately. At the same time, the outer spray hood 53 only sprays in the middle of the curtain body 51, so that the sprayed disinfectant is directed outward instead of toward the target beds on both sides, and does not affect patients in other areas on both sides.

[0023] In one embodiment of the present invention, Figure 4 As shown, the proposed bedside contactless disinfection device also includes: The operating component 2 is arranged at the outer edge end of the curtain body 51, and the box body 1 is installed on the outer top of the operating component 2. During implementation, the operating component 2 positions the retracted curtain body 51, and with the help of the retracted characteristics of the curtain body 51, the operating component 2 quickly squeezes out the residual liquid in the inner spray cover 52 and the outer spray cover 53, thereby avoiding liquid residue. If the squeezed liquid adheres to the curtain body 51, the operating component 2 heats the curtain body 51 to make the liquid evaporate quickly.

[0024] As a technical concept and understanding of the present invention, it can be understood that the various defects of traditional disinfection methods affect the daily operating efficiency of hospitals and also pose a threat to the health and safety of patients and medical staff.

[0025] Therefore, the present invention proposes that: the processor is electrically connected to the temperature and humidity sensor, the ultraviolet intensity sensor, the infrared thermal imaging array, the millimeter wave radar, the flow sensor, the liquid level sensor, the liquid supply pump and the ultraviolet disinfection module through the integrated Modbus / Profinet industrial bus interface. The three states of enclosure closure, daily ventilation and unmanned disinfection mode of the target area are switched. Thus, through automated control, fast and accurate disinfection operations can be achieved, work efficiency can be improved, and the safety of patients and medical staff can be guaranteed. In the unmanned disinfection mode, high-intensity disinfection is ensured when no one is in the area to avoid harm to the human body by ultraviolet rays and disinfectants.

[0026] Based on the above technical concept, the specific implementation steps are as follows: The processor initially electrically controls the operating component to slide along the upper and lower guide rails, driving the curtain to pull outward to form a closed area. The enclosure closing mode is completed and switched to the daily mode. In this daily mode, ventilation is achieved through the coordinated use of the air duct, fan and three-way valve.

[0027] The infrared thermal imaging array is set to collect the thermal radiation characteristics in the target area at a specific frame rate to obtain a sequence-level grayscale image representing the thermal imaging data of the personnel. The collected grayscale image is preprocessed, and 64 key pixels are selected from the image as the region of interest (ROI). The average grayscale value of the key pixels is calculated. If the average grayscale value of a certain area is close to 1, it is considered that there are thermal radiation characteristics of personnel in the target area, and the thermal imaging detection probability is generated. At the same time, the instantaneous speed of each person detected by the millimeter-wave radar is extracted, the average speed of all people is calculated, and the radar detection probability is generated by comparing the absolute deviation between the instantaneous speed of each person and the average speed. , where the smaller the deviation value is, the higher the probability that a person exists in the target area; Construct a weighted fusion model: , generating the probability of personnel appearing in the target area , where is the thermal imaging weight coefficient, is the radar weight coefficient, η is the motion compensation factor, is the motion compensation probability, is a Sigmoid function, which is used to highlight the detection results of high-probability areas of thermal imaging to reduce false positives in low-grayscale areas. It is a square root function, which is used to suppress misjudgment caused by occasional high-speed motion (such as device movement) and enhance the sensitivity to regular human motion. is a hyperbolic tangent function, which is used to limit the range of the compensation term to avoid the interference of the above-mentioned occasional high-speed motion on the overall probability.

[0028] Among them, when When the decision threshold is greater than or equal to the processor triggers the safety mechanism (such as triggering the safety mechanism within 200 milliseconds), the power supply of the UV disinfection module is immediately cut off (such as setting the response time ≤ 50ms), and the power supply of the liquid supply pump is simultaneously turned off to stop the spraying of the disinfectant. Otherwise, the disinfection operation is performed according to the disinfection parameters, and the event details (such as the current environmental parameters, the probability of personnel presence) are written to the system log. value and response timestamp) to ensure that the disinfection operation is terminated immediately when the presence of a person is detected, avoiding harm to the human body caused by ultraviolet rays or disinfectant.

[0029] It is understandable that the present invention can avoid starting ultraviolet disinfection and disinfectant disinfection in the presence of people by detecting whether there are people in the area, thereby protecting the safety of medical staff and patients. By combining the infrared thermal imaging array and the millimeter wave radar, it is possible to detect whether there are people in the area. The infrared thermal imaging array detects the thermal radiation characteristics of the human body, while the millimeter wave radar detects the tiny movements of the human body, such as the moving speed. Through the two sets of detection data, misjudgment is reduced and the reliability of detection is improved.

[0030] When the probability of personnel existence P h When the decision threshold calibrated by the clinical scenario experiment is reached, the processor switches from the daily mode to the unmanned disinfection mode: the processor controls the inner spray hood and / or outer spray hood and the ultraviolet disinfection module of the enclosure mechanism to perform disinfection work in the closed area simultaneously; when the probability of personnel being present is P h ≥ decision threshold, the processor switches from unmanned disinfection mode back to daily mode and waits for the next disinfection instruction to ensure the safety and effectiveness of the disinfection process. In specific implementation, in unmanned disinfection mode, ultraviolet rays and disinfectant are sprayed to ensure that pathogens in the enclosed area are completely killed and the disinfection effect is improved. Ultraviolet rays and disinfectant can more comprehensively cover all surfaces in the enclosed area, including hard-to-reach corners, to ensure that there are no dead corners for disinfection.

[0031] In one embodiment of the present invention, since environmental conditions (such as temperature and humidity) have a significant impact on the disinfection effect during the disinfection process of the medical environment, an increase in temperature usually accelerates the chemical reaction rate, thereby improving the bactericidal effect of the disinfectant. For example, common chemical disinfectants (chlorine-containing disinfectants) can react with pathogens faster at higher temperatures and destroy their cell structures. However, disinfectants will decompose or volatilize at high temperatures, resulting in a reduction in effective ingredients, thereby reducing the disinfection effect. For example, hydrogen peroxide is easily decomposed into water and oxygen at high temperatures and loses its disinfection ability. At the same time, in a low humidity environment, the water on the surface of the disinfectant evaporates quickly, resulting in the disinfectant failing to fully penetrate and act on the pathogens before the surface dries, affecting the disinfection effect. In addition, the output intensity of the ultraviolet lamp is also affected by temperature. Within a suitable temperature range, the luminous efficiency of the ultraviolet lamp is high, which can provide a stronger bactericidal effect. Too high or too low temperature causes the output intensity of the ultraviolet lamp to decrease, thereby affecting its bactericidal ability.

[0032] Based on this, in order to ensure the stability and reliability of the disinfection effect, during the disinfection operation, it is necessary to dynamically adjust the disinfection parameters according to the actual environmental conditions to ensure that efficient and reliable disinfection effects can be achieved under different environmental conditions. In specific implementation, the environmental judgment conditions set are:

[0033] Based on the determined environmental conditions, the specific process of adjusting the disinfectant spray flow rate is as follows: A representative basic spraying flow rate Q is set based on the target area and basic disinfection requirements base The standard value is in ml / m², based on the basic spraying flow rate Q base As a benchmark, adjust the disinfectant spray flow rate:

[0034] That is, under low temperature and high humidity conditions, increase the spray flow rate by 20%, that is, 1.2×Q base , to cope with the dilution and reduced activity of disinfectants caused by high humidity; in normal temperature and humidity mode, keep the basic spray flow unchanged; in high temperature and low humidity mode, reduce the spray flow to 85% of the basic value, that is, 0.85×Qbase, to prevent high temperature from accelerating the volatilization of disinfectants and causing waste. In practice, basic disinfection requirements are based on industry standards.

[0035] In one embodiment of the present invention, in order to avoid waste of resources and interruption of spraying, during the disinfection process of the above-mentioned medical environment, it is also necessary to dynamically adjust the spray flow of the disinfectant according to the actual environmental conditions and the liquid level of the disinfectant. The principle is: obtain the liquid level L and spray flow Q of the disinfectant in the storage tank according to the liquid level sensor and the flow sensor, complete the coordinated control constraint of the liquid level L and the spray flow Q of the disinfectant, so as to ensure that the contactless disinfection device dynamically coordinates and / or controls the supply and spraying of the disinfectant, and avoids the interruption of spraying due to insufficient disinfectant level or the waste of resources due to excessive flow. The specific process is: First, the preset liquid level threshold L th , such as the liquid level threshold L th =20%; if the current liquid level L<liquid level threshold L th , then let the liquid level influence factor αL=0, trigger the liquid replenishment alarm based on the processor, remind the maintenance personnel to replenish the disinfectant in time, and suspend the spraying operation at the same time to prevent the interruption of disinfection or poor effect due to insufficient liquid level; if the current liquid level L≥liquid level threshold L th , then let αL=1, which means the liquid level is sufficient and the disinfectant can be sprayed normally; Secondly, based on the liquid level influencing factor αL and the adjusted spraying flow Q under the current environmental conditions calc , calculate the expected spraying flow rate Q rel :

[0036] In the formula, αL is the liquid level influencing factor, which is used to decide whether spraying is allowed according to whether the current liquid level is lower than the liquid level threshold. is the ratio of the current liquid level to the liquid level threshold, which is used to further adjust the spray flow rate according to the current liquid level value. The current liquid level L≥the liquid level threshold L th When the ratio is 1, the spraying flow rate is not affected; the current liquid level L is less than the liquid level threshold L th When the ratio is less than 1, the expected spraying flow rate Q is reduced. rel , until the liquid level in the storage tank is replenished to above the liquid level threshold; Again, to ensure that the expected spraying flow rate is consistent with the target flow rate, it is preferred to use a PID control algorithm to adjust the speed of the liquid supply pump: Calculate the expected spraying flow rate Q rel During the disinfection process, the actual spray flow rate Q is obtained in real time based on the flow sensor act Error e: e=Q rel -Q act It can be understood that the error value reflects the deviation between the current actual spraying flow rate and the expected value, which is the basis for subsequent adjustments. The expected spraying flow rate Q rel and the actual spraying flow Q actIdeally, it should be consistent, but there are deviations in actual operation. Therefore, the PID control algorithm is used to adjust the speed of the liquid supply pump to make the actual spraying flow rate Q act As close as possible to the desired spray flow rate Q rel , can achieve precise flow control; Finally, according to the error e, the adjustment amount Δu is calculated based on the PID control formula. According to the adjustment amount Δu, the speed of the liquid supply pump is adjusted accordingly through the processor to achieve precise control of the disinfectant flow rate. Among them, the speed of the liquid supply pump is positively correlated with the disinfectant flow rate. The higher the speed, the greater the flow rate.

[0037] In specific implementation, the PID control formula is calculated as follows:

[0038] In the formula, is the integral variable, representing each time point from time 0 to the current time t, Kp=0.8, Ki=0.05, Kd=0.1, Kp, Ki, Kd are the proportional, integral and differential parameters of the PID controller respectively, so that the actual spraying flow rate Q act Close to the expected spraying flow Q rel , thereby achieving precise flow control. The purpose of this process is to ensure efficient and reliable disinfection effects under different environmental conditions through automated and intelligent control methods, while optimizing resource utilization and reducing unnecessary waste.

[0039] In one embodiment of the present invention, the specific process of adjusting the power of the ultraviolet disinfection module is as follows: First, to meet the basic disinfection requirements and have the minimum effective intensity, a basic ultraviolet intensity I is set. base The standard value of the basic UV intensity I base The standard value refers to the ultraviolet intensity output by the ultraviolet lamp under the condition of meeting the basic disinfection requirements and having the minimum effective intensity, and the unit is μW / cm². base Based on the UV intensity adjustment formula under the current environment, the expected UV intensity I is calculated. target :I target =γ×I base , where γ is the environmental state correction coefficient, 低温高湿状态 =1.15,γ 常温常湿状态 =1.0,γ 高温低湿状态 =0.90, take I base 90μW / cm²; Second, calculate the required disinfection time:

[0040] Where D t The minimum value of ultraviolet energy that the target area needs to receive per unit area during the disinfection process, in μJ / cm 2 , which indicates the minimum energy standard that needs to be achieved during the disinfection process to ensure that the killing rate of target pathogens (such as bacteria and viruses) reaches the expected effect. The target dose D is commonly used. t =3600μJ / cm2, e -0.015(H-55） The humidity H correction term of the current environment is used to adjust the effect of humidity on UV penetration, that is, humidity will affect the spread of UV and the survival of pathogens. For example, high humidity increases the scattering and absorption of UV, reducing the disinfection effect.

[0041] So far, in the disinfection process of the medical environment, the present invention achieves efficient, safe and reliable disinfection effects through mode switching and parameter adjustment. In the enclosure closed mode, a relatively independent space is created to prevent the spread of pathogens, and on this basis, it switches to the daily mode to achieve daily ventilation. In the unmanned disinfection mode, the disinfection effect is further enhanced. At the same time, the entire process dynamically coordinates the supply and spraying of the disinfectant to avoid interruptions in spraying due to insufficient liquid level or waste of resources caused by excessive flow, so as to achieve the expected disinfection standards under different environmental conditions and maintain the sanitation and safety of the ward environment.

[0042] As an embodiment of the present invention, the principle of spraying disinfectant is as follows: through the C-shaped inner spray hood 52 integrated above and below the inner wall of the plastic curtain 51, the gas-liquid control component can export the disinfectant into the inner spray hood 52, and then the inner spray hood 52 can spray the disinfectant into the closed area from the top and bottom. The disinfectant sprayed from the top can fall from top to bottom for three-dimensional disinfection, and finally fall on the target bed to disinfect the surface of the bed. The disinfectant sprayed from the bottom can be sprayed to the ground and the bottom of the target bed, thereby achieving comprehensive disinfection.

[0043] like Figure 7As shown, the proposed gas-liquid control component includes a three-way valve 13, an air duct 15 and a liquid supply pump 14. The upper cover body 12 is arranged inside the storage box 11. The three-way valve 13 has three openable and closable joints, which are customized as a first joint, a second joint and a third joint. The first joint of the three-way valve 13 is plugged in with the adapter tube 3 to transport the disinfectant to the inner spray cover, the second joint is connected to the liquid supply pump 14 to extract the disinfectant in the storage box, and the third joint is connected to the air duct 15. The outer end of the air duct 15 is connected to the fan 16. In specific implementation, the fan 16, the liquid supply pump 14 and the three-way valve 13 are all installed in the upper cover body 12. After the first joint is connected with the transfer tube, it protrudes from the outer edge of the upper cover body. The purpose of reserving the first joint on the top surface of the upper cover body 12 is to facilitate the docking and connection of the first joint with the transfer tube 3 when the box body 1 rises to the top. The output end of the transfer tube 3 is provided with a first valve body 31 and a second valve body 32 in sequence. The second valve body 32 is connected with the inner spray cover 52, and the first valve body 31 is connected with the outer spray cover 53. It can be understood that the C-type inner spray cover 52 and the outer spray cover 53 can adapt to the storage and expansion of the curtain body 51, and the deformation effect is better. The working process of the first valve body 31 and the second valve body 32 cooperating with the outer spray cover 53 and the inner spray cover 52 can be independently controlled based on the processor to complete the independent internal or external output of the medium, or the synchronous output of the medium. The outer surfaces of the inner spray cover 52 and the outer spray cover 53 are embedded with atomizing nozzles.

[0044] The three-way valve 13 implements the following control: in the unmanned disinfection mode, the first connector and the second connector are opened, and the liquid supply pump 14 draws disinfectant from the storage box 11, and outputs it through the first connector and the adapter tube 3 for spraying disinfection; in the daily mode, the first connector and the third connector are opened, and the fan 16 sends air into the air duct 15, and then outputs it through the first connector and the adapter tube 3 to realize air transportation.

[0045] In one embodiment of the present invention, Figure 8 - Fig.11 As shown, the proposed bedside contactless disinfection device also includes: The mobile disinfection component 4 includes a mobile vertical plate 41 and a flip plate 42. The mobile vertical plate 41 is slidably installed on the top of the upper guide rail 54. The mobile vertical plate 41 is provided with a first avoidance groove 411 for the curtain body 51 to pass through. The top of the flip plate 42 is rotatably connected to the top of the inner side of the mobile vertical plate 41. The side of the flip plate is provided with an ultraviolet intensity sensor. The outside of the flip plate 42 is provided with an ultraviolet disinfection module and a storage component. Among them, the ultraviolet disinfection module is used to perform ultraviolet disinfection treatment in the closed area. When it is necessary to close and stop ultraviolet disinfection, the mobile disinfection component 4 can be moved to a suitable position alone, and the flip plate 42 can be rotated upward to be unfolded for ultraviolet disinfection. When it is not necessary to disinfect bacteria, the storage component on the flip plate 42 is used to facilitate medical staff to place nursing items at hand when performing bedside care.

[0046] During specific implementation, the top of the movable vertical plate 41 is symmetrically provided with a guide wheel 47, the bottom surface of the upper guide rail 54 is symmetrically provided with a running groove 541 for the guide wheel 47 to be embedded, and the rotation connection between the flip plate 42 and the movable vertical plate 41 is provided with a first motor 422, and a receiving cavity is provided inside. The proposed storage component includes a storage plate 44, a UV disinfection module is installed on one side of the flip plate 42, and a groove 421 is provided on the other side, and the storage plate 44 is damped and rotated and embedded in the groove 421. When the flip plate 42 is not flipped, the movable vertical plate 41 and the flip plate 42 are L-shaped, at this time, the storage plate 44 rotates inward and unfolds, and when the flip plate 42 is flipped upward to a horizontal state, the UV disinfection module faces downward. The medical staff pushes the movable vertical plate 41 to move the guide wheel 47 in the running groove 541. In this way, when it is necessary to place items nearby, the movable vertical plate 41 can be pushed to the nearest position, and the storage plate 44 can be rotated downward to place items such as trays on the storage plate 44. During closed disinfection, the first motor 422 drives the flip plate 42 to rotate upward to a horizontal position, so that the ultraviolet disinfection module faces downward.

[0047] In one embodiment of the present invention, in order to fully realize ultraviolet disinfection, the proposed ultraviolet disinfection module includes a first ultraviolet lamp 43, a second ultraviolet lamp 452, a second motor 46 and an expansion frame 45 with the same output power. In specific implementation, the expansion frame 45 is slidably embedded in the accommodating cavity of the flip plate 42, and the expansion frame 45 is limited to a U-shaped cross-sectional structure, a tooth groove 451 is opened on the top surface of the expansion frame 45, and the second ultraviolet lamp 452 is installed on the bottom surface. The first ultraviolet lamp 43 and the second motor 46 are installed on the side of the flip plate 42, and the output end gear of the second motor 46 is meshed and connected to the tooth groove 451.

[0048] When ultraviolet disinfection is required, the first motor 422 drives the flip plate 42 to rotate upward, so that the first ultraviolet lamp 43 faces downward. At the same time, the second motor 46 drives the expansion frame 45 to extend outward through the meshing of its output end gear with the tooth groove 451 on the top surface of the expansion frame 45. The extension of the expansion frame 45 drives the second ultraviolet lamp 452 to move downward together. At this time, the first ultraviolet lamp 43 and the second ultraviolet lamp 452 work synchronously to jointly perform ultraviolet disinfection on the enclosed area, and as the expansion frame 45 is further extended, the coverage of the second ultraviolet lamp 452 continues to expand, thereby effectively increasing the ultraviolet disinfection area and improving the disinfection efficiency and effect.

[0049] It should be noted that in order to achieve flexible adjustment and efficient disinfection function of the ultraviolet disinfection module, the working status (output power) of the first ultraviolet lamp and the second ultraviolet lamp are uniformly managed by the control system (ARM Cortex-A72 architecture, processor with a main frequency of 2.0GHz). According to the disinfection requirements and preset programs, signals are sent to the first motor and the second motor to drive the flipping of the flip plate and the extension of the expansion frame, thereby controlling the working position and coverage of the first ultraviolet lamp and the second ultraviolet lamp to achieve accurate disinfection of the enclosed area.

[0050] In one embodiment of the present invention, Figure 5 - Figure 6 As shown, the main purpose of the operating component 2 is to constrain and position the curtain body 51 in the folded state, squeeze and dry the inner spray cover 52, and assist in the unfolding and use of the curtain body 51, thereby improving the use efficiency and operating convenience of the entire disinfection device.

[0051] During specific implementation, it includes an end plate 21, a first vertical slot 211, a second vertical slot 212 and a positioning socket 221. The top of the end plate 21 is slidably embedded in the upper guide rail 54, and the bottom is slidably embedded in the lower guide rail 55. The curtain body extends outward from the end plate to form a closed area surrounding the bed; a first vertical slot 211 is provided on one side of the outer wall of the end plate 21, and a second vertical slot 212 is provided on the other side. The second vertical slot 212 is located in the first vertical slot 211, and the first moving block 22 is slidably embedded in the first vertical slot 211. The outer wall of the first moving block 22 is provided with a positioning socket 221, and the inner wall is provided with a positioning slot 222. The second moving block 25 has an internal thread with a second screw 26, and the second screw 26 is installed on the side wall of the end plate 21. A storage box 27 is vertically provided on the inner wall of the second moving block 25. A strap 29 is stored inside the storage box 27, and a positioning column 291 is provided at the end of the strap 29. A telescopic assembly rod 24 is provided on the inner wall of the second moving block 25, a vertical partition 28 is provided in the middle of the outer side of the end plate 21, a stopper vertical plate 281 is vertically provided on the outer end of the vertical partition 28, the end of the curtain body 51 is connected to the stopper vertical plate 281, the stopper vertical plate 281 is located on the outer side of the first moving block 22 and the second moving block 25, and a second avoidance groove 282 for the telescopic assembly rod 24 to pass through is provided inside the vertical partition 28. The inner wall of the binding 29 is embedded with a heating wire. When the curtain body 51 is folded, the binding 29 is pulled outward to be constrained to the outside of the folded curtain body 51, the positioning pin 291 is inserted into the positioning socket 221, and the end of the telescopic assembly rod 24 is inserted into the positioning slot 222. The binding 29 moves up and down to squeeze out the liquid in the inner spray cover 52 and the outer spray cover 53 and dry the curtain body 51.

[0052] Based on the above technical concept, it can be understood that the first moving block 22 and the second moving block 25 are usually placed at the bottom of the end plate 21 to facilitate the binding operation; when the curtain body 51 is folded, the curtain body 51 passes through the first avoidance groove 411 and then folds in front of the stop vertical plate 281. When the folding is completed, the medical staff inserts the positioning pin 291 of the bandage 29 into the positioning socket 221, and then pushes the telescopic assembly rod 24 outward to insert it into the positioning slot 222, so that the bandage 29, the first moving block 22 and the second moving block 25 form a ring-shaped whole. When the second screw 26 rotates, the second moving block 25 is driven to move upward along the second vertical groove 212, and then the first moving block 22 and the bandage 29 are synchronously driven to move upward along the folded curtain body 51. When the bandage 29 moves upward, it squeezes the folded curtain body 51, so that the liquid in the inner spray cover 52 and the outer spray cover 53 is squeezed out. After vertical lifting, the electric heating wire is powered on, and the bandage 29 generates heat to dry the curtain body 51.

[0053] In one embodiment of the present invention, in order to facilitate the refilling of the storage box 11, the present invention further proposes that a first screw 23 is provided on the outside of the first vertical slot 211, the first moving block 22 is vertically slidably mounted on the first screw 23, the outer wall of the first screw 23 is threadedly mounted with a third moving block 231, the third moving block 231 is slidably mounted in the first vertical slot 211 and is located above the first moving block 22, the side wall of the storage box 11 is provided with an assembly block 111, the assembly block 111 is inserted into the outside of the third moving block 231 and the two are fixed by bolts, the first screw 23 is used to drive the third moving block 231 to move up and down, at this time, the refilling valve 17 provided at the bottom of the storage box 11 is opened to achieve the refilling of the storage box 11. In specific implementation, when the first screw 23 rotates, it will not drive the first moving block 22 to move, but will only drive the third moving block 231 to move up and down. When refilling is needed, the first screw 23 drives the third moving block 231 to descend, the first joint is separated from the transfer tube 3, and when it descends to the bottom, the refilling can be completed.

[0054] As an embodiment of the present invention, the probability P of a person appearing in the target area is calculated. h When the infrared thermal imaging module is preferably a thermal imager, it is understood that the grayscale value of each pixel in the sequence-level grayscale image representing the thermal imaging data of the personnel reflects the thermal radiation intensity of the corresponding area.

[0055] In specific implementation, the probability of thermal imaging detection is calculated The formula is: , where Represents the normalized grayscale value of the i-th pixel in the sequence-level grayscale image, with a value range of [0,1], and 64 is the number of pixels in the region of interest selected based on the processor structure performance. So far, the possibility of the presence of a person in the thermal imaging image is measured by calculating the average pixel grayscale value in the sequence-level grayscale image. The higher the grayscale value, the greater the probability that the person exists. The preferred method is to use a processor based on the ARM Cortex-A72 architecture (main frequency 2.0GHz), and to call the OpenCV library through the embedded Linux system to realize real-time image processing. The thermal imager outputs the original grayscale image, and the ambient brightness difference is eliminated by the grayscale normalization algorithm (linearly mapped to the [0,1] range), and then the Gaussian filter algorithm is used to filter out noise. The fixed coordinate method or the dynamic threshold method is used to select 64 key pixels from the image as the region of interest ROI, such as automatically locating the high-probability area based on the thermal radiation intensity threshold (such as >0.7), and then the NEON instruction set is used to accelerate the grayscale value summation and mean calculation of 64 pixels.

[0056] Calculating Radar Detection Probability The formula is: , where N is the number of people detected, is the instantaneous speed of the kth person, is the average speed of all personnel, is the set maximum speed threshold. So far, by calculating the deviation between the instantaneous speed of each target and the average speed, and normalizing it to the maximum speed threshold, the stability of the movement of people detected by the radar can be measured. The smaller the deviation, the higher the probability of the existence of people. It should be noted that the instantaneous speed proposed in this embodiment reflects the actual movement state of a single target (personnel) at a certain moment, which is directly derived from the real-time measurement data of the radar, while the average speed is used to characterize the overall movement trend of all targets (personnel) in the current area / detection scene, and the speed deviation is calculated to measure the degree of deviation of the speed of a single target (personnel) from the overall trend. Generally speaking, the smaller the deviation, the more consistent the target movement pattern (such as the regularity of human gait), thereby improving the calculation confidence of the probability of the existence of people.

[0057] Example: If the radar detects three targets (people) with instantaneous speeds of 1.2m / s, 1.5m / s, and 1.8m / s (the data is taken from the typical walking speed range of the human body), the average speed is 1.5m / s. The absolute deviations of the speeds of each target (person) from the average speed are 0.3m / s, 0m / s, and 0.3m / s, respectively, normalized to the preset maximum speed threshold. After that, the radar detection probability calculation result is As it approaches a low value (small deviation), the probability that the system determines that a person exists increases.

[0058] Generate the probability of personnel existence In the process, α is the thermal imaging weight coefficient set according to the importance of infrared thermal imaging array in personnel detection, β is the radar weight coefficient set according to the importance of millimeter wave radar in detecting personnel movement, and η is the motion compensation factor that compensates for the impact of personnel movement on the detection result. imu The intensity of a person's movement is measured by calculating the root mean square value of the acceleration of the person's movement speed, and the motion compensation probability is obtained after normalization processing combined with the radar detection angle compensation coefficient.

[0059] Among them, calculate the motion compensation probability The specific process is: Collect acceleration data of people's movements at a high sampling rate and store them as time series arrays , and then use MATLAB or Python software to calculate the root mean square (RMS) value of acceleration: , to quantify the intensity of the person's movement, and then combine the radar detection angle compensation coefficient , through the normalization formula , which is converted into a compensation probability in the range of 0 to 1, where RMS max It is the preset maximum RMS value. In specific implementation, it is preferred to use the NumPy library to calculate the RMS value, use Pandas to process the data, and finally use the Matplotlib library to visualize the results to assist in analyzing the impact of personnel movement on detection.

[0060] In one embodiment of the present invention, the determination of the aforementioned thermal imaging weight coefficient α, radar weight coefficient β and motion compensation factor η needs to comprehensively consider sensor performance, environmental conditions and actual application requirements. Generally, the values ​​of α and β are based on the effectiveness and reliability of the sensor in personnel detection, and are optimized through experimental calibration and data analysis. When detecting static personnel, the thermal imaging weight α is set to 0.6, highlighting its advantage in identifying stationary targets; when detecting moving personnel, the radar weight β is set to 0.5, highlighting its ability to capture motion information. The motion compensation factor η is dynamically adjusted according to the intensity of the person's movement and the compensation requirements of the radar detection angle. The general value range is between 0.1 and 0.3, which is used to correct the impact of movement on the detection results and improve detection accuracy.

[0061] As shown in Table 1, the experimental data of the influence of weight coefficient on the detection effect of probability of presence of personnel are shown. It should be noted that the experimental data acquisition process is as follows: a. Set the data set: including 200 sets of clinical scene data (static / dynamic personnel, equipment interference, rapid motion); b. Evaluation indicators: detection probability (effective detection when Ph≥0.3), false alarm rate (false trigger rate when there is no personnel), missed detection rate (non-detection rate when there is personnel); c. Through grid search (Grid Search), α∈[0.5,0.7], β∈[0.2,0.6], η∈[0.1,0.3] are traversed to screen the best combination of comprehensive performance. Conclusion: The experimental data verifies that α=0.6, β=0.5, η=0.2 are the optimal weight configurations, and the synergistic effect of static personnel detection (α-dominated) and regular motion (β-dominated) is significant. The compensation factor η effectively corrects the rapid motion interference. Through multi-scene data calibration, the sensor performance and environmental interference are balanced to ensure detection accuracy and safety.

[0062] Table 1

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bedside contactless disinfection device, characterized in that: include: The box has a built-in liquid supply pump for delivering disinfectant, and is integrated with a processor, a millimeter-wave radar, and an infrared thermal imaging array; The enclosure mechanism includes a curtain body that can be unfolded to form a closed disinfection area, an embedded atomizing nozzle connected to the curtain body, and a UV disinfection module; The processor is connected to the infrared thermal imaging array, millimeter wave radar, liquid supply pump and ultraviolet disinfection module to ensure the safety and effectiveness of the disinfection process. The process is as follows: The infrared thermal imaging array is set to collect the thermal radiation characteristics in the target area at a specific frame rate to obtain a sequence-level grayscale image representing the thermal imaging data of the personnel. The collected grayscale image is preprocessed, and 64 key pixels are selected from the grayscale image as the region of interest. The average grayscale value of the key pixels is calculated. If the average grayscale value of a certain area is close to 1, it is considered that there are thermal radiation characteristics of personnel in the target area, and the thermal imaging detection probability is generated. ; Extract the instantaneous speed of each person detected by the millimeter-wave radar, calculate the average speed of all people, and generate the radar detection probability by comparing the absolute deviation between the instantaneous speed of each person and the average speed. , where the smaller the deviation value is, the higher the probability that a person exists in the target area; Construct a weighted fusion model: Generates the probability of a person appearing in the target area , where is the thermal imaging weight coefficient, is the radar weight coefficient, η is the motion compensation factor, is the motion compensation probability, is the Sigmoid function; when When the value exceeds the decision threshold, the processor triggers the safety mechanism, immediately cuts off the power supply of the UV disinfection module, and simultaneously turns off the power supply of the liquid supply pump to stop spraying the disinfectant. Otherwise, the disinfection operation is performed according to the disinfection parameters.

2. A bedside contactless disinfection device according to claim 1, characterized in that: Calculate motion compensation probability The specific process is as follows: First, the acceleration data of personnel movement is collected at a high sampling rate and stored as a time series array. ; Secondly, use MATLAB or Python software to calculate the root mean square value of acceleration: ; Finally, combined with the radar detection angle compensation coefficient , through the normalization formula , which is converted into a compensation probability in the range of 0 to 1, where is the preset maximum RMS value.

3. A bedside contactless disinfection device according to claim 1, characterized in that: The enclosure mechanism also includes: an upper guide rail and a lower guide rail respectively connected to the upper and lower ends of the curtain body in a sliding manner, wherein an inner spray hood is provided on the inner wall of the curtain body, and the inner spray hood is connected to the gas-liquid control component through a transfer tube; A movable vertical plate is slidably installed on the top of the upper guide rail, and the inner side of the movable vertical plate is rotatably connected to a flip plate for installing the ultraviolet disinfection module; The top of the movable vertical plate is symmetrically provided with guide wheels, and the bottom surface of the upper guide rail is symmetrically provided with a walking groove for the guide wheels to be embedded; a first motor is provided at the rotation connection between the flip plate and the movable vertical plate to drive the flip plate to flip, so as to realize the deployment and folding of the ultraviolet disinfection module; The ultraviolet disinfection module includes a first ultraviolet lamp, a second ultraviolet lamp, a second motor and an expansion frame. The expansion frame is slidably embedded in the accommodating cavity opened inside the flip plate. A tooth groove is opened on the top surface of the expansion frame, and the second ultraviolet lamp is installed on the bottom surface. The first ultraviolet lamp, the second motor and the ultraviolet intensity sensor are respectively installed on the side of the flip plate. The output end gear of the second motor is meshed and connected to the tooth groove to adjust the working range and disinfection coverage area of ​​the ultraviolet disinfection module; The ultraviolet intensity sensor is electrically connected to the processor.

4. A bedside contactless disinfection device according to claim 3, characterized in that: The gas-liquid regulating component includes a three-way valve and an air duct, and three connectors are respectively installed at the ports of the three-way valve, which are customized as a first connector, a second connector and a third connector, wherein the first connector is plugged in with the adapter tube to transport the disinfectant to the inner spray hood, and after the first connector is connected with the adapter tube, it protrudes from the outer edge surface of the upper cover body arranged on the top of the box body, and the output end of the adapter tube is successively provided with a first valve body and a second valve body, the second valve body is connected with the inner spray hood, and the first valve body is connected with the outer spray hood arranged on the outside of the curtain body; the second connector is connected with the liquid supply pump to pump out the disinfectant; the third connector is connected with the air duct to realize air transportation, a liquid level sensor for monitoring the liquid level of the disinfectant is installed inside the box, and a flow sensor for monitoring the spraying flow of the disinfectant is installed in the flow channel formed by the connection with the adapter tube; the liquid level sensor and the flow sensor are electrically connected to the processor.

5. A bedside contactless disinfection device according to claim 1, characterized in that: The outer edge of the curtain is provided with a temperature and humidity sensor electrically connected to the processor, wherein, during the disinfection operation, the processor obtains the temperature T and humidity H data of the target area in real time through the temperature and humidity sensor, determines the current environmental state based on the preset environmental judgment conditions, dynamically adjusts the disinfection parameters, and then performs the disinfection operation to ensure that the disinfection effect is optimal; The preset environmental judgment conditions are: 。 6. A bedside contactless disinfection device according to claim 5, characterized in that: The disinfection parameters include the disinfectant spray flow rate and the ultraviolet disinfection module power; wherein the specific process of adjusting the disinfectant spray flow rate is: Set a representative basic spraying flow rate Q base The standard value is used as a benchmark to adjust the spray flow rate of the disinfectant: The specific process of adjusting the power of the UV disinfection module is as follows: First, set a basic UV intensity I base The standard value of the basic UV intensity I base Based on the UV intensity adjustment formula under the current environment, the expected UV intensity I is calculated. target :I target =γ×I base , where γ is the environmental state correction coefficient, 低温高湿状态 =1.15,γ 常温常湿状态 =1.0,γ 高温低湿状态 =0.90, take I base 90μW / cm²; Second, calculate the required disinfection time: Where D t The minimum value of ultraviolet energy that needs to be received per unit area during the disinfection process, in μJ / cm 2 , e -0.015(H-55） It is the humidity H correction item of the current environment, which is used to adjust the effect of humidity on ultraviolet penetration.

7. A bedside contactless disinfection device according to claim 4 or 6, characterized in that: In the specific process of adjusting the spray flow of disinfectant, it is necessary to complete the coordinated control constraints of the disinfectant liquid level L and the spray flow Q. The specific process is as follows: First, the preset liquid level threshold L th , if the current liquid level L<liquid level threshold L th , then let the liquid level influence factor αL=0, trigger the liquid replenishment alarm based on the processor, and suspend the spraying operation at the same time; if the current liquid level L≥liquid level threshold L th , then let αL=1, and spray the disinfectant normally; Secondly, based on the liquid level influencing factor αL and the adjusted spraying flow Q under the current environmental conditions calc , calculate the expected spraying flow rate Q rel : In the formula, is the ratio of the current liquid level to the liquid level threshold, the current liquid level L ≥ liquid level threshold L th When the current liquid level L is less than the liquid level threshold L th When the ratio is less than 1, the expected spraying flow rate Q is reduced. rel , until the tank liquid level is replenished to above the liquid level threshold; Again, calculate the expected spray flow rate Q rel During the disinfection process, the actual spray flow rate Q is obtained in real time based on the flow sensor act The error between: e=Q rel -Q act ; Finally, according to the error e, the adjustment amount Δu is calculated based on the PID control formula, and according to the adjustment amount Δu, the rotation speed of the liquid supply pump is adjusted by the processor.

8. A bedside contactless disinfection device according to claim 1, characterized in that: It also includes an operating component arranged at the outer edge end of the curtain, the operating component includes an end plate, a first vertical slot, a second vertical slot and a positioning socket, wherein the curtain body extends outward from the end plate to form a closed area surrounding the bed, the top of the end plate is slidably embedded in the upper guide rail, and the bottom is slidably embedded in the lower guide rail, one side of the outer wall of the end plate is provided with a first vertical slot, and the other side is provided with a second vertical slot; the second vertical slot is located on the inner side of the first vertical slot, and the first moving block is slidably embedded in the first vertical slot, the outer wall of the first moving block is provided with a positioning socket, and the inner wall is provided with a positioning slot, the second moving block is threaded with a second screw rod, the second screw rod is installed on the side wall of the end plate, the inner wall of the second moving block is vertically provided with a storage box, and the storage box is provided with a strap for storage; The end of the binding strap is provided with a positioning plug column, the inner wall of the second moving block is also provided with a telescopic assembly rod, a vertical partition is provided in the middle of the outer side of the end plate, and a stop vertical plate is vertically provided at the outer end of the vertical partition, the end of the curtain body is connected to the stop vertical plate, the stop vertical plate is located on the outer side of the first moving block and the second moving block, and a second avoidance groove for the telescopic assembly rod to pass through is opened inside the vertical partition; When the curtain body is folded, the binding strap is pulled outward to constrain the outside of the curtain body in the folded state, the positioning pin is inserted into the positioning socket, the end of the telescopic assembly rod is inserted into the positioning slot, and the binding strap moves up and down to squeeze out the disinfectant in the inner spray cover and the outer spray cover.

9. A bedside contactless disinfection device according to claim 8, characterized in that: A first screw rod is disposed outside the first vertical slot, and a first moving block is vertically slidably sleeved on the first screw rod; The outer wall thread sleeve of the first screw rod is provided with a third movable block, the third movable block is slidably installed in the first vertical groove and is located above the first movable block, and the side wall of the box body is provided with an assembly block, the assembly block is inserted into the outer side of the third movable block and the two are fixed by bolts; the first screw rod drives the third movable block to move up and down to facilitate fluid replenishment of the box body.

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