Intelligent sickbed disinfecting and killing system based on multimode pulsed light field and dynamic contour tracking

Abstract

The invention discloses an intelligent sickbed disinfection system based on a multi-mode pulsed light field and dynamic contour tracking, and belongs to the field of disinfection, the system comprises a disinfection module, a thermodynamic diagram generation module and a safety protection module, the disinfection module generates a planned path according to sickbed parameters, the planned path is adopted to optimize an actual disinfection path, and the disinfection module is used for performing disinfection. And meanwhile, a motion-light field coupling algorithm is adopted to meet a light field overlapping ratio constraint condition, a safety protection module performs weighting processing on radar information and infrared imaging information by using a personnel activity probability model based on a Bayesian network to obtain a personnel activity probability, and the personnel activity probability is calculated according to the calculated personnel activity probability. If the personnel activity probability is larger than the preset activity probability, it is indicated that the personnel enter, at the moment, the ultraviolet array pulse square is closed, harm to human health is avoided, comprehensive sterilization is achieved, the limitation of a light source is eliminated, a thermodynamic diagram is generated by a thermodynamic diagram generation module according to bacteria and virus data, and self-adaptive dynamic sterilization of the hospital is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of disinfection, and in particular relates to an intelligent bed disinfection system based on multi-mode pulse light field and dynamic contour tracking. Background Art

[0002] Hospitals are places where various pathogens gather. Hospital beds, as objects that are in direct contact with patients, are more likely to breed bacteria and viruses, increasing the probability of infection. Disinfection of hospital beds is an important part of hospital infection control. Effective disinfection methods can reduce the risk of hospital infection and protect the health of patients and medical staff. At the same time, existing equipment does not have integrated networking functions, and disinfection records rely on manual statistics, which cannot meet the real-time traceability needs of hospital infection control.

[0003] Existing bed disinfection methods often use chemical disinfectants and ultraviolet disinfection. Commonly used chemical disinfectants include alcohol and chlorine-containing disinfectants. Chemical disinfectants are used to spray and wipe the beds, but chemical disinfectants are prone to residues after spraying and wiping. At the same time, chemical disinfectants are also corrosive to the human body and pose potential hazards to human health. Ultraviolet disinfection equipment is used for disinfection. Since ultraviolet disinfection equipment uses continuous irradiation of a single band, it cannot adapt to the differences in photosensitivity responses of different microorganisms, and the energy of ultraviolet rays is limited and there is a coverage blind spot, so all-round disinfection cannot be achieved, and the light source has limitations.

[0004] In addition, the use of chemical disinfectants for spraying and wiping is labor-intensive and is limited by the items on the bed. The use of ultraviolet disinfection equipment for disinfection requires a long time of irradiation with ordinary ultraviolet rays, and the irradiation efficiency is low, which makes it difficult to meet the high-frequency disinfection needs of beds in medical environments. Fixed light sources or simple mobile mechanisms lack the ability to adapt to the contours of the bed, resulting in uneven disinfection of the overall surface of the bed.

[0005] Based on the above-mentioned deficiencies, how to provide an effective technical solution to solve the problems of harm to human health, limitations of light sources, uneven disinfection, and inability to meet the needs of high-frequency disinfection and real-time traceability of hospital infection control has become a difficult problem that needs to be urgently solved in the existing technology. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent bed disinfection system based on multi-mode pulse light field and dynamic contour tracking to solve the above-mentioned problems existing in the prior art.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides an intelligent hospital bed disinfection system based on a multimode pulsed light field and dynamic contour tracking, including a disinfection module, a heat map generation module, and a safety protection module. The disinfection module includes a disinfection control module and a path optimization module;

[0009] The disinfection control module is used to obtain the unit parameters of the hospital bed, obtain the area of the hospital bed according to the unit parameters of the hospital bed, obtain the planned path according to the area of the hospital bed, and control the disinfection equipment to disinfect the hospital bed according to the planned path; obtain the incident angle and spot diameter of the pulsed light beam of the ultraviolet array pulsed light field when the disinfection equipment is disinfecting. When the incident angle changes, adopt the motion-light field coupling algorithm to adjust the frequency of the ultraviolet array pulsed light field according to the incident angle and spot diameter to meet the light field overlap rate constraint condition and ensure that the light field overlap rate reaches the preset threshold;

[0010] The path optimization module is used to obtain the actual disinfection path of the disinfection equipment, obtain the path error value based on the planned path and the actual disinfection path, use the path error value to optimize the actual disinfection path, obtain the optimized path, and upload the optimized path to the disinfection control module;

[0011] The heat map generation module is used to obtain the bacteria and virus data of the hospital bed after disinfection is completed and generate a heat map according to the bacteria and virus data of the hospital bed;

[0012] The safety protection module is used to obtain radar information and infrared imaging information, perform weighted processing on the radar information and infrared imaging information using a personnel activity probability model based on a Bayesian network to obtain the personnel activity probability, and generate a shutdown control instruction for the ultraviolet array pulsed light field when the personnel activity probability is greater than the preset activity probability.

[0013] In a possible design, the light field overlap rate constraint condition is:

[0014]

[0015] In the formula, f represents the frequency of the ultraviolet array pulsed light field, v represents the disinfection speed, d spot represents the spot diameter, and θ represents the incident angle.

[0016] In a possible design, it further includes an energy regulation module. The energy regulation module is used to obtain the reflection intensity of the pulsed light beam of the ultraviolet array pulsed light field after irradiating the hospital bed and adjust the incident angle according to the reflection intensity so that the pulsed light beam meets the energy density uniformity constraint condition.

[0017] In a possible design, the energy density uniformity constraint condition is:

[0018]

[0019] In the formula, Ed min represents the minimum value of the local energy density, and Ed max represents the maximum value of the local energy density.

[0020] In a possible design, a Bayesian network-based human activity probability model is used to perform weighted processing on radar information and infrared imaging information to obtain the human activity probability, including:

[0021] Obtain the time and location information of the radar information and the infrared imaging information;

[0022] Based on the time and location information, align the radar information and the infrared imaging information to obtain a human motion signal and a temperature mutation signal;

[0023] Judge the intensities of the human motion signal and the temperature mutation signal, perform weighted processing on the human motion signal and the temperature mutation signal according to the intensities to obtain a weighted value, and use a Bayesian network-based human activity probability model to perform probability inference on the weighted value to obtain the human activity probability.

[0024] In a second aspect, the present invention provides an intelligent hospital bed disinfection device based on a multimode pulsed light field and dynamic contour tracking, including a light source module, a human-computer interaction module, an FPGA pulse modulator, and a host; the host includes the intelligent hospital bed disinfection system according to any one of the first aspects;

[0025] The light source module includes an ultraviolet array pulsed light field, a light prism reflection module, a light sensor, and a position sensor. The ultraviolet array pulsed light field includes a plurality of ultraviolet array high-energy pulsed xenon lamps for emitting pulsed light beams; the light prism reflection module includes a plurality of beam splitting prisms for adjusting the incident angle of the ultraviolet array pulsed light field; the light sensor is used to detect the light intensity reflected by the hospital bed from the ultraviolet array high-energy pulsed xenon lamps; the position sensor is used to detect the distance between the intelligent hospital bed disinfection device and the hospital bed during the disinfection process;

[0026] The human-computer interaction module is used to record the unit parameters of the hospital bed and send the unit parameters of the hospital bed to the host;

[0027] The FPGA pulse modulator is used to adjust the intensity of the pulsed light beam of the ultraviolet array pulsed light field.

[0028] In a possible design, it further includes an infrared sensor and a radar sensor;

[0029] The infrared sensor is installed on the light source module and is used to detect the infrared imaging information of the human body in a preset area and send the infrared imaging information to the host;

[0030] The radar sensor is installed on the host and is used to collect the distance and moving speed of personnel within a preset range, and send the distance and moving speed of the personnel to the host as radar information.

[0031] In a possible design, it further includes a motion module. The motion module includes a motion sensor, a motion chassis, and a moving component. The motion sensor is installed on the motion chassis, and the moving component is arranged at the bottom of the motion chassis;

[0032] The motion sensor is used to detect the motion data of the intelligent hospital bed disinfection device, and the motion data includes the disinfection speed;

[0033] The moving component includes a plurality of moving wheels and a driving motor, and the driving motor drives the moving wheels to move according to the optimized path;

[0034] Both the motion sensor and the driving motor are connected to the host.

[0035] In a possible design, the human-computer interaction module is further used to send a re-disinfection instruction to the host when a red warning area appears in the heat map.

[0036] In a possible design, it further includes a power supply module. The power supply module is used to supply power to the ultraviolet array pulse light field. A GaN solid-state light field locking device is connected in series between the power supply module and the ultraviolet array pulse light field. The GaN solid-state light field locking device is communicatively connected to the host, and the GaN solid-state light field locking device is used to cut off the connection between the ultraviolet array pulse light field and the power supply module when responding to a shutdown control instruction.

[0037] The beneficial effects of the present invention are as follows:

[0038] The present invention discloses an intelligent hospital bed disinfection system based on a multimode pulsed light field and dynamic contour tracking, which includes a disinfection module, a heat map generation module, and a safety protection module. The disinfection module includes a disinfection control module and a path optimization module. The disinfection control module disinfects the hospital bed according to the planned path, and the path optimization module optimizes the actual disinfection path based on the planned path and the actual disinfection path to obtain an optimized path, preventing uneven disinfection caused by the deviation of the intelligent hospital bed disinfection equipment during the disinfection process. Moreover, a motion-light field coupling algorithm is used to adjust the light field frequency to ensure that the light field meets the light field overlap rate constraint condition. The heat map generation module is used to obtain the bacteria and virus data of the hospital bed, generate a heat map based on the bacteria and virus data of the hospital bed, and back up various data and store them in the log to meet the real-time traceability requirements of hospital infection control. The safety protection module uses a personnel activity probability model based on a Bayesian network to perform probability inference on personnel. When a person is detected to enter, a shutdown control instruction for the ultraviolet array pulsed light field is generated to avoid harm to human health. By adjusting the frequency of the ultraviolet array pulsed light field, the overlap rate of the light field is ensured to meet the requirements, achieving full-range disinfection and eliminating the limitations of the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 FIG. is a three-dimensional structural diagram of the intelligent hospital bed disinfection equipment provided in this embodiment;

[0040] Figure 2 FIG. is a front view of the intelligent hospital bed disinfection equipment provided in this embodiment;

[0041] Figure 3 FIG. is a structural diagram of the light source module provided in this embodiment;

[0042] Figure 4 FIG. is a left view of the intelligent hospital bed disinfection equipment provided in this embodiment.

[0043] Reference numerals: 1, light source module; 11, ultraviolet array pulsed light field; 12, light prism reflection module; 13, light sensor; 14, position sensor; 2, human-computer interaction module; 3, host; 4, motion module; 41, motion sensor; 42, motion chassis; 43, moving component; 5, infrared sensor; 6, radar sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the accompanying drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the accompanying drawings is only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0045] Embodiment:

[0046] In the first aspect of this embodiment, an intelligent hospital bed disinfection system based on a multimode pulsed optical field and dynamic contour tracking is provided, including a disinfection module, a heat map generation module, and a safety protection module. The disinfection module includes a disinfection control module and a path optimization module;

[0047] The disinfection control module is used to obtain the unit parameters of the hospital bed, obtain the area of the hospital bed according to the unit parameters of the hospital bed, obtain the planned path according to the area of the hospital bed, and control the disinfection equipment to disinfect the hospital bed according to the planned path; obtain the incident angle and spot diameter of the pulsed light beam of the ultraviolet array pulsed optical field when the disinfection equipment is disinfecting. When the incident angle changes, adopt the motion-optical field coupling algorithm to adjust the frequency of the ultraviolet array pulsed optical field according to the incident angle and spot diameter to meet the optical field overlap rate constraint condition and ensure that the optical field overlap rate reaches the preset threshold;

[0048] The path optimization module is used to obtain the actual disinfection path of the disinfection equipment, obtain the path error value based on the planned path and the actual disinfection path, use the path error value to optimize the actual disinfection path, obtain the optimized path, and upload the optimized path to the disinfection control module;

[0049] The heat map generation module is used to obtain the bacteria and virus data of the hospital bed after disinfection is completed, and generate a heat map according to the bacteria and virus data of the hospital bed;

[0050] The safety protection module is used to obtain radar information and infrared imaging information, perform weighted processing on the radar information and infrared imaging information using a personnel activity probability model based on a Bayesian network to obtain the personnel activity probability. When the personnel activity probability is greater than the preset activity probability, the ultraviolet array pulsed optical field is turned off.

[0051] Specifically, in this embodiment, the disinfection equipment disinfects according to the planned path three times in a reciprocating manner, and the preset threshold is selected to be 30% or more to eliminate the disinfection blind area, achieve full-range disinfection, and avoid the limitations of the light source; the heat map is uploaded to the operation log of the intelligent hospital bed disinfection system, and the electronic log in the operation log of the intelligent hospital bed disinfection system complies with the FDA 21 CFR Part 11 electronic record specification and meets the medical compliance requirements.

[0052] Furthermore, in this embodiment, the motion-light field coupling algorithm dynamically adjusts the pulse beam intensity and frequency of the ultraviolet array pulsed light field according to information such as the incident angle, spot diameter, and light intensity reflected by the hospital bed, avoiding gaps between spots that may lead to disinfection blind spots and affect the disinfection effect, ensuring that different areas of the hospital bed can be fully disinfected, and improving the disinfection efficiency.

[0053] In a possible design, the light field overlap rate constraint condition is:

[0054]

[0055] In the formula, f represents the frequency of the ultraviolet array pulsed light field, v represents the disinfection speed, d spot represents the spot diameter, and θ represents the incident angle.

[0056] Furthermore, when θ increases, the frequency of the ultraviolet array pulsed light field is increased to compensate for the reduction in spot diameter, improve the effective irradiation dose, obtain a pre-stored relationship table, which has the corresponding relationship between the incident angle, disinfection speed, and the frequency of the ultraviolet array pulsed light field. When θ changes, other parameters are adjusted in advance to reduce the impact of delay changes. If θ suddenly changes and causes a light field blind spot, the intelligent hospital bed disinfection system is cut off and reset to avoid the occurrence of a sterilization blind spot.

[0057] In this embodiment, when the distance to the scanning surface enters the long-distance range, the intelligent hospital bed disinfection system automatically enters the "high θ mode", reduces the disinfection speed to a safety threshold (such as 30% of the normal speed), and at the same time increases the frequency of the ultraviolet array pulsed light field to the upper limit value of 20 Hz, increases the pulse energy or extends the residence time to offset the decrease in coverage rate caused by the reduction in disinfection speed and ensure the sterilization effect.

[0058] In a possible design, it further includes an energy regulation module, which is used to obtain the reflection intensity of the pulse beam of the ultraviolet array pulsed light field after irradiating the hospital bed, and adjusts the incident angle according to the reflection intensity to make the pulse beam meet the energy density uniformity constraint condition.

[0059] In a possible design, the energy density uniformity constraint condition is:

[0060]

[0061] In the formula, Ed min represents the minimum value of the local energy density, and Ed max represents the maximum value of the local energy density.

[0062] Specifically, the disinfection effect depends not only on the relevant parameters of the device itself, such as pulse intensity, frequency, and energy density, but also on the reflectivity of the surface of the sterilized object to light. Due to the presence of wrinkles and other conditions on the hospital bed items, the reflectivity of different areas and positions is different. Therefore, to ensure the sterilization effect, it is necessary to constrain the energy density uniformity.

[0063] In a possible design, a personnel activity probability model based on a Bayesian network is used to weight the radar information and the infrared imaging information to obtain the personnel activity probability, including:

[0064] Obtain the time and position information of the radar information and the infrared imaging information;

[0065] Furthermore, a personnel activity probability model based on a Bayesian network is constructed according to the radar information and the infrared imaging information.

[0066] Align the radar information and the infrared imaging information based on the time and position information to obtain the personnel action signal and the temperature mutation signal;

[0067] Judge the intensity of the personnel action signal and the temperature mutation signal, weight the personnel action signal and the temperature mutation signal according to the intensity to obtain the weighted value, and use the personnel activity probability model based on the Bayesian network to perform probability inference on the weighted value to obtain the personnel activity probability.

[0068] This embodiment combines the radar information and the infrared imaging information to comprehensively judge the probability of human activity, which is more accurate and reliable than the single sensor in the prior art.

[0069] Furthermore, in this embodiment, the communication between each module adopts encrypted transmission to meet the medical compliance requirements.

[0070] As Figures 1 to 4 shown, the second aspect of this embodiment provides an intelligent hospital bed disinfection device based on a multi-mode pulsed light field and dynamic contour tracking, including a light source module 1, a human-machine interaction module 2, an FPGA pulse modulator, and a host 3; the host 3 includes the intelligent hospital bed disinfection system according to any one of the first aspects of this embodiment;

[0071] The light source module 1 includes an ultraviolet array pulsed light field 11, a light prism reflection module 12, a light sensor 13, and a position sensor 14. The ultraviolet array pulsed light field 11 includes a plurality of ultraviolet array high-energy pulsed xenon lamps for releasing pulsed light beams; the light prism reflection module 12 includes a plurality of beam splitters for adjusting the incident angle of the ultraviolet array pulsed light field 11; the light sensor 13 is used to detect the light intensity reflected by the hospital bed of the ultraviolet array high-energy pulsed xenon lamp; the position sensor 14 is used to detect the distance between the intelligent hospital bed disinfection device and the hospital bed during the disinfection process;

[0072] Specifically, the ultraviolet array pulsed light field 11 uses an ultraviolet array pulsed xenon lamp, whose light source spectral range is 200nm - 1100nm, while the spectral range of ordinary ultraviolet rays is only 10nm - 400nm. It supports multiple modes, such as the UVC-dominated mode and the UVA near-infrared hybrid mode, etc. By coupling with the light prism reflection module 12, it can enhance the light source reflectivity and improve the irradiation intensity. Among them, the UVC-dominated mode dominates sterilization.

[0073] The human-machine interaction module 2 is used to record the unit parameters of the hospital bed and send the unit parameters of the hospital bed to the host 3;

[0074] The FPGA pulse modulator is used to adjust the pulse beam intensity of the ultraviolet array pulsed light field (11).

[0075] Specifically, the FPGA pulse modulator can achieve nanosecond-level pulse width control, and the nanosecond-level range is 10nm - 200nm. It can dynamically adjust the irradiation intensity of the ultraviolet array pulsed light field 11, so that the dynamic range of the energy density is 5mJ / cm 2 -150mJ / cm 2 , matching the irradiation lethal thresholds of different microorganisms. For example, the irradiation dose for inactivating the new coronavirus in the laboratory needs to be greater than or equal to 30mJ / cm 2 , to adapt to the photosensitive response differences of different microorganisms.

[0076] In a possible design, it also includes an infrared sensor 5 and a radar sensor 6;

[0077] The infrared sensor 5 is installed on the light source module 1 and is used to detect the infrared imaging information of the human body in a preset area and send the infrared imaging information to the host;

[0078] The radar sensor 6 is installed on the host 3 and is used to collect the distance and moving speed of personnel within a preset range and send the distance and moving speed of the personnel as radar information to the host.

[0079] Specifically, in this embodiment, the radar sensor 6 selects an FMCW radar (Frequency Modulated Continuous Wave Radar), and its acquisition distance is 0.2m - 5m.

[0080] In a possible design, it also includes a motion module 4. The motion module 4 includes a motion sensor 41, a motion chassis 42, and a moving component 43. The motion sensor 41 is installed on the motion chassis 42, and the moving component 43 is arranged at the bottom of the motion chassis 42;

[0081] The motion sensor 41 is used to detect the motion data of the intelligent hospital bed disinfection device, and the motion data includes the disinfection speed;

[0082] The moving component 43 includes a plurality of moving wheels and a driving motor, and the driving motor drives the moving wheels to move according to the optimized path;

[0083] Both the motion sensor 41 and the driving motor are connected to the control module.

[0084] In a possible design, the human-computer interaction module 2 is further configured to send a re-disinfection instruction to the host 3 when a red warning area appears in the heat map.

[0085] Specifically, a heat map is generated according to the hospital bed bacteria and virus data. The heat map reflects the distribution and density relationship of bacteria and viruses in each area of the hospital bed. When a red area appears in the heat map, that is, when the density relationship is greater than the preset density, a re-disinfection instruction is sent to the host 3.

[0086] In a possible design, a power supply module is further included. The power supply module is used to supply power to the ultraviolet array pulse light field. A GaN solid-state light field locking device is connected in series between the power supply module and the ultraviolet array pulse light field. The GaN solid-state light field locking device is communicatively connected to the host. The GaN solid-state light field locking device is used to cut off the connection between the ultraviolet array pulse light field 11 and the power supply module when responding to a shutdown control instruction.

[0087] Specifically, the GaN solid-state light field locking device includes a high-speed control module and a high-speed control module, a three-level protection mechanism, and a direct-bonded heat sink. Among them, the high-speed control module integrates photosensitive detection and differential drive. By using the GaN solid-state light field locking device, the light source shutdown delay is less than or equal to 0.08 seconds, and its value is 40% better than the international standard.

[0088] In this embodiment, a multi-protocol communication architecture is adopted, which supports redundant transmission of 5G and SA industrial Ethernet links. The upload interval between device status data is less than or equal to 1 second. Among them, the device status data includes, but is not limited to, the light decay curve and the disinfection working status.

[0089] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent hospital bed disinfection system based on multimode pulsed light field and dynamic contour tracking, characterized in that, It includes a disinfection module, a heat map generation module and a safety protection module. The disinfection module includes a disinfection control module and a path optimization module; The disinfection control module is used to obtain the unit parameters of the hospital bed, obtain the area of the hospital bed according to the unit parameters of the hospital bed, obtain the planned path according to the area of the hospital bed, and control the disinfection equipment to disinfect the hospital bed according to the planned path; Obtain the incident angle and spot diameter of the pulsed light beam of the ultraviolet array pulsed light field during the disinfection of the disinfection equipment. When the incident angle changes, adopt the motion-light field coupling algorithm to adjust the frequency of the ultraviolet array pulsed light field according to the incident angle and spot diameter to meet the light field overlap rate constraint condition and ensure that the light field overlap rate reaches the preset threshold; The path optimization module is used to obtain the actual disinfection path of the disinfection equipment, obtain the path error value based on the planned path and the actual disinfection path, use the path error value to optimize the actual disinfection path, obtain the optimized path, and upload the optimized path to the disinfection control module; The heat map generation module is used to obtain the bacteria and virus data of the hospital bed after disinfection and generate a heat map according to the bacteria and virus data of the hospital bed; The safety protection module is used to obtain radar information and infrared imaging information, perform weighted processing on the radar information and infrared imaging information using a personnel activity probability model based on a Bayesian network to obtain the personnel activity probability, and generate a shutdown control instruction for the ultraviolet array pulsed light field when the personnel activity probability is greater than the preset activity probability.

2. The intelligent hospital bed disinfection system based on multimode pulsed optical field and dynamic contour tracking according to claim 1, wherein The light field overlap rate constraint condition is: where f represents the frequency of the ultraviolet array pulsed light field, v represents the disinfection speed, and d spot represents the spot diameter, and θ represents the incident angle.

3. The intelligent hospital bed disinfection and sterilization system based on multimode pulsed light field and dynamic contour tracking according to claim 1, wherein It further includes an energy regulation module. The energy regulation module is used to obtain the reflection intensity of the pulsed light beam of the ultraviolet array pulsed light field after irradiating the hospital bed, and adjust the incident angle according to the reflection intensity so that the pulsed light beam meets the energy density uniformity constraint condition.

4. The intelligent hospital bed disinfection and sterilization system based on multimode pulsed light field and dynamic contour tracking according to claim 3, characterized in that, The energy density uniformity constraint condition is: where, Ed min represents the minimum value of the local energy density, and Ed max represents the maximum value of the local energy density.

5. An intelligent hospital bed disinfection system based on a multimode pulsed optical field and dynamic contour tracking according to claim 1, characterized in that, Performing weighted processing on the radar information and infrared imaging information using a personnel activity probability model based on a Bayesian network to obtain the personnel activity probability includes: Obtain the time and position information of the radar information and infrared imaging information; Perform an alignment operation on the radar information and infrared imaging information based on the time and position information to obtain a personnel action signal and a temperature mutation signal; Judge the intensity of the personnel action signal and the temperature mutation signal, perform weighted processing on the personnel action signal and the temperature mutation signal according to the intensity to obtain a weighted value, and perform probability inference on the weighted value using a personnel activity probability model based on a Bayesian network to obtain the personnel activity probability.

6. An intelligent hospital bed disinfection device based on a multimode pulsed light field and dynamic contour tracking, characterized in that, It includes a light source module (1), a human-computer interaction module (2), an FPGA pulse modulator and a host (3); the host (3) includes the intelligent hospital bed disinfection system according to any one of claims 1-5; The light source module (1) includes an ultraviolet array pulsed light field (11), a light prism reflection module (12), a light sensor (13) and a position sensor (14). The ultraviolet array pulsed light field (11) includes a plurality of ultraviolet array high-energy pulsed xenon lamps for releasing pulsed light beams; The prism light reflection module (12) includes a plurality of beam splitting prisms for adjusting the incident angle of the ultraviolet array pulsed light field (11); the light sensor (13) is used to detect the light intensity of the ultraviolet array high-energy pulsed xenon lamp reflected by the hospital bed; the position sensor (14) is used to detect the distance between the intelligent hospital bed disinfection device and the hospital bed during the disinfection process; The human-computer interaction module (2) is used to record the unit parameters of the hospital bed and send the unit parameters of the hospital bed to the host (3); The FPGA pulse modulator is used to adjust the pulse beam intensity of the ultraviolet array pulsed light field (11).

7. An intelligent hospital bed disinfection device based on a multimode pulsed optical field and dynamic contour tracking according to claim 6, characterized in that, It further includes an infrared sensor (5) and a radar sensor (6); The infrared sensor (5) is installed on the light source module (1) and is used to detect the infrared imaging information of the human body in a preset area and send the infrared imaging information to the host; The radar sensor (6) is installed on the host (3) and is used to collect the distance and moving speed of the personnel within a preset range and send the distance and moving speed of the personnel to the host as radar information.

8. An intelligent hospital bed disinfection device based on a multimode pulsed light field and dynamic contour tracking according to claim 6, characterized in that, It further includes a motion module (4), and the motion module (4) includes a motion sensor (41), a motion chassis (42) and a moving component (43). The motion sensor (41) is installed on the motion chassis (42), and the moving component (43) is arranged at the bottom of the motion chassis (42); The motion sensor (41) is used to detect the motion data of the intelligent hospital bed disinfection device, and the motion data includes the disinfection speed; The moving component (43) includes a plurality of moving wheels and a driving motor, and the driving motor drives the moving wheels to move according to the optimized path; Both the motion sensor (41) and the driving motor are connected to the host (3).

9. The intelligent hospital bed disinfection device based on a multimode pulsed optical field and dynamic contour tracking according to claim 6, wherein The human-computer interaction module (2) is further used to send a re-disinfection instruction to the host (3) when a red warning area appears in the heat map.

10. An intelligent hospital bed disinfection device based on a multimode pulsed light field and dynamic contour tracking according to claim 6, characterized in that It further includes a power supply module. The power supply module is used to supply power to the ultraviolet array pulsed light field. A GaN solid-state light field locking device is connected in series between the power supply module and the ultraviolet array pulsed light field. The GaN solid-state light field locking device is in communication connection with the host. The GaN solid-state light field locking device is used to cut off the connection between the ultraviolet array pulsed light field (11) and the power supply module when responding to a shutdown control instruction.

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