Claims:1. A system (100) for performing controlled exposure of UV rays onto a target space, said system comprising:
one or more UV lamps (104) configured on a device (102), the one or more UV lamps operable to emit UV rays onto the target space, the device is adapted to be located on a surface;
an array of sensors (106) configured on the device, said array of sensors adapted to detect a set of physical attributes of the target space; and
a microcontroller (108) operatively to the array of sensors, said microcontroller operatively coupled to a memory, the memory storing instructions executable by the microcontroller to:
receive, from said array of sensors, the set of physical attributes of the target space, the set of physical attributes pertaining to any or a combination of environmental parameters, motion parameters of objects and geometrical parameters of the target space;
analyse the received set of physical attributes to extract a set of values from the set of physical attributes;
obtain history of UV exposures in form of individual and cumulative time durations;
obtain pre-calibrated time-dependent deterioration of power output of said one or more UV lamps; and
calculate a predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, wherein, the microcontroller is configured to operate said one or more UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
2. The system as claimed in claim 1, wherein the environmental parameters comprise temperature of the space, humidity of the space and any combination thereof, the geometric parameters comprise distance between the surface of the target space and the UV lamp and motion parameters of objects comprise object attributes and any combination thereof.
3. The system as claimed in claim 1, wherein said microcontroller (108) calculates effective required time duration of the UV exposure using the extracted set of values and compensating the values based on the history of the previous exposures in form of cumulative time duration, individual time durations and pre-calibrated time-dependent deterioration of the power output of the one or more UV lamps.
4. The system as claimed in claim 1, wherein said microcontroller (108) compensates for the required time duration based on the dosage delivered during the previous disinfection cycle and the time of the previous disinfection cycle.
5. The system as claimed in claim 1, wherein said microcontroller (108) records the effective required time duration and the actual time of exposure of the UV rays.
6. The system as claimed in claim 1, wherein the one or more UV lamps are activated or deactivated using any or a combination of manual mode using a wireless or wired mode of a machine-to-machine communication and automated mode.
7. The system as claimed in claim 1, wherein said microcontroller (108), upon detection of object attributes, configured to deactivate the emission of the one or more UV lamps on to the target space, wherein the one or more UV lamps emit the UV rays exposed to the target space with wavelength within the range of 100 nm-280 nm.
8. The system as claimed in claim 1, wherein said microcontroller (108) records the amount of dosage delivered between the activation and the deactivation period of the one or more UV lamps.
9. The system as claimed in claim 1, wherein said device (102) comprises a power supply configured to supply power to the device.
10. A method (300) for performing controlled exposure of UV rays onto a target space, the method comprising:
detecting (302), by an array of sensors, a set of physical attributes of the target space, the array of sensors configured on a device located on a surface;
receiving (304), at a microcontroller, from the array of sensors, the set of physical attributes of the target space, the set of physical attributes pertaining to any or a combination of environmental parameters, motion parameters of objects and geometrical parameters of the target space;
analysing (306), at the microcontroller, the received set of physical attributes to extract a set of values from the set of physical attributes;
obtaining (308), at the microcontroller, history of UV exposures in form of individual and cumulative time durations;
obtaining (310), at the microcontroller, pre-calibrated time-dependent deterioration of the power output of one or more UV lamps, one or more UV lamps configured on the device; and
calculating (312), at the microcontroller, a predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, wherein, the microcontroller is configured to operate the one or more UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates, in general, to a disinfection mechanism, and more specifically, relates to a system and method for delivering UVGI dosage for effective disinfection of aerosols and surfaces of enclosed spaces.

BACKGROUND
[0002] Ultraviolet germicidal irradiation (UVGI) is a method for disinfection that utilizes ultraviolet (UV) light to kill microorganisms. UV light includes electromagnetic radiation with wavelengths shorter than visible light. UVGI utilizes short-wavelength ultraviolet radiation UV-C that is harmful to microorganisms. It can be effective in destroying the nucleic acids in these organisms such that their DNA is disrupted by UV radiation, leaving them unable to perform vital cellular functions.
[0003] Existing UVGI lamps are currently used to disinfect spaces and surfaces in many applications from hospital wards to metro rail coaches. However, all the existing UVGI lamps suffer from the following limitations such as lack of primary factor measurements, ineffective for large areas, lack of a system to ensure that the required dosage is delivered given the values of primary factors, lack of a system to ensure human safe dosage limits in privacy-sensitive applications. For example, a 10% change in the humidity can double the duration required for the same level of disinfection. Doubling the distance between the lamp and the surface can quarterple the duration requirement and a 20% reduction in the power output of the lamp can increase the required duration by 25%. Hence the existing solutions are inapt for ensuring effective disinfection of contaminated spaces.
[0004] Therefore, there is a need in the art to develop a simple and cost-effective means to control multiple UV-C lamps in real-time in such a way that ensures the desired level of disinfection in the contaminated surface irrespective of the dynamically changing values of the primary factors.

OBJECTS OF THE PRESENT DISCLOSURE
[0005] An object of the present disclosure relates, in general, to a disinfection mechanism, and more specifically, relates to a system and method for delivering UVGI dosage for effective disinfection of aerosols and surfaces.
[0006] Another object of the present disclosure is to provide a system that delivers the correct dosage of UV-C radiation to the closed contaminated space.
[0007] Another object of the present disclosure is to provide a system that measures the primary factors that affect the UVGI disinfection for the closed contaminated space, where the primary factors include environmental parameters, geometric parameters and lamp specifications.
[0008] Another object of the present disclosure is to provide a system that offsets the dosage of UV-C radiation for the variation of any or all the primary factors.
[0009] Another object of the present disclosure is to provide a system that ensures that the dose of UVC radiation is delivered to the contaminated space such that the required disinfection level is achieved irrespective of the dynamically changing values of the primary factors that affect the duration required to deliver such a dosage.
[0010] Yet another object of the present disclosure is to provide a system that ensures human safe dosage limits.

SUMMARY
[0011] The present disclosure relates, in general, to a disinfection mechanism, and more specifically, relates to a system and method for delivering UVGI dosage for effective disinfection of aerosols and surfaces of enclosed spaces.
[0012] The present disclosure relates to a system for performing controlled exposure of UV rays onto a target space, the system includes one or more UV lamps configured on a device, the one or more UV lamps operable to emit UV rays onto a target space, the device is adapted be located on a surface, an array of sensors configured on the device, the array of sensors adapted to detect a set of physical attributes of the target space and a microcontroller operatively to the array of sensors, the microcontroller operatively coupled to a memory, the memory storing instructions executable by the microcontroller to receive, from the array of sensors, the set of physical attributes of the target space, the set of physical attributes pertaining to any or a combination of environmental parameters, motion parameters of objects and geometrical parameters of the target space, analyse the received set of physical attributes to extract a set of values from the set of physical attributes, obtain history of UV exposures in form of individual and cumulative time durations, obtain pre-calibrated time-dependent deterioration of the power output of the one or more UV lamps; and calculate a predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, wherein, the microcontroller is configured to operate the one or more UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
[0013] According to an embodiment, the environmental parameters comprise temperature of the space, humidity of the space and any combination thereof, the geometric parameters comprise distance between the surface of the target space and the UV lamp and motion parameters of objects comprise object attributes and any combination thereof.
[0014] According to an embodiment, the microcontroller calculates effective required time duration of the UV exposure using the extracted set of values and compensating the values based on the history of the previous exposures in form of cumulative time duration, individual time durations and pre-calibrated time-dependent deterioration of the power output of the one or more UV lamps.
[0015] According to an embodiment, the microcontroller compensates for the required time duration based on the dosage delivered during the previous disinfection cycle and the time of the previous disinfection cycle.
[0016] According to an embodiment, the microcontroller records the effective required time duration and the actual time of exposure of the UV rays.
[0017] According to an embodiment, the one or more UV lamps are activated or deactivated using any or a combination of manual mode using a wireless or wired mode of a machine-to-machine communication and automated mode.
[0018] According to an embodiment, the microcontroller, upon detection of object attributes, configured to deactivate the emission of the one or more UV lamps on to the target space, wherein the one or more UV lamps emit the UV rays exposed to the target space with wavelength within the range of 100 nm-280 nm.
[0019] According to an embodiment, the microcontroller records the amount of dosage delivered between the activation and the deactivation period of the one or more UV lamps.
[0020] According to an embodiment, the device comprises a power supply configured to supply power to the device.
[0021] The present disclosure relates to a method for performing controlled exposure of UV rays onto a target space, the method includes detecting, by an array of sensors, a set of physical attributes of the target space, the array of sensors configured on a device located on a surface, receiving, at a microcontroller, from the array of sensors, the set of physical attributes of the target space, the set of physical attributes pertaining to any or a combination of environmental parameters, motion parameters of objects and geometrical parameters of the target space, analysing, at the microcontroller, the received set of physical attributes to extract a set of values from the set of physical attributes, obtaining, at the microcontroller, history of UV exposures in form of individual and cumulative time durations, obtaining, at the microcontroller, pre-calibrated time-dependent deterioration of the power output of one or more UV lamps, UV lamps configured on the device; and calculating, at the microcontroller, a predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, wherein, the microcontroller is configured to operate the one or more UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
[0022] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The following drawings form part of the present specification and are included to further illustrate aspects of the present disclosure. The disclosure may be better understood by reference to the drawings in combination with the detailed description of the specific embodiments presented herein.
[0024] FIG. 1A illustrate exemplary functional component of a system for performing controlled exposure of UV irradiation onto a contaminated space, in accordance with an embodiment of the present disclosure.
[0025] FIG. 1B illustrate exemplary representation of a system for performing controlled exposure of UV irradiation onto a contaminated space, in accordance with an embodiment of the present disclosure.
[0026] FIG. 1C illustrate exemplary representation of a device installed at point E, in accordance with an embodiment of the present disclosure.
[0027] FIG. 2 is a high-level flow diagram illustrating working of the system, in accordance with an embodiment of the present disclosure.
[0028] FIG. 3 illustrate exemplary flow chart of a method for performing controlled exposure of UV irradiation onto a contaminated space, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0029] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0030] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[0031] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0032] The present disclosure relates, in general, to a disinfection mechanism, and more specifically, relates to a system and method for delivering UVGI dosage for effective disinfection of aerosols and surfaces of enclosed spaces. In an embodiment, the system and method of the present disclosure enable to overcome the limitations of the prior art by ensuring that the dose of UVC radiation is delivered to the contaminated space such that the required disinfection level is achieved irrespective of the dynamically changing values of the primary factors that affect the duration required to deliver such a dosage. The primary factors include environmental parameters, geometric parameters, lamp specifications and any combination thereof. The term “ultraviolet-C” used herein refers to ultraviolet light with a wavelength between 100-280nm is well known for its germicidal properties. UVC has proven to neutralize the pathogen population on the surface and the volume under the exposure. In the context of its germicidal properties, the short-wavelength light including the UV-C light is also referred to as Ultraviolet Germicidal Irradiation (UVGI).
[0033] The term “dosage” used herein refers to the intensity of UV-C observed by the contaminated space multiplied by the duration of the exposure, measured in Milli-Joule per cm square ( ). The term “Level of Disinfection” used herein refers to the log reduction in the pathogen population = The level of disinfection is mandated by various bureaus of standards depending on the application. For example, in medical applications, a 3-5 log reduction is desired.
[0034] The system and method of the present disclosure ensure the delivery of the UVGI exposure onto the contaminated space given the desired value of disinfection level irrespective of the dynamic variable that affects the disinfection. For a certain level of disinfection, a specific dosage must be delivered to the contaminated space. Such a dose is supplied using the UV-C lamp, which can be movable or mounted on the ceiling or walls of the contaminated space illuminating the space directly. The proposed edge intelligent system controls multiple UV-C lamps in real-time in such a way that ensures the desired level of disinfection in the contaminated surface, considering the above parameters. The present disclosure can be described in enabling detail in the following examples, which may represent more than one embodiment of the present disclosure. The description of terms and features related to the present disclosure shall be clear from the embodiments that are illustrated and described; however, the invention is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents of the embodiments are possible within the scope of the present disclosure. Additionally, the invention can include other embodiments that are within the scope of the claims but are not described in detail with respect to the following description.
[0035] FIG. 1A illustrate exemplary functional component of a system for performing controlled exposure of UV irradiation onto a contaminated space, in accordance with an embodiment of the present disclosure.
[0036] Referring to FIG. 1A, ultraviolet germicidal irradiation (UVGI) exposure system 100 (also referred to as system 100, herein) adapted for performing controlled exposure of the UV rays onto a target space i.e., closed contaminated space including surfaces and volume e.g., rooms, halls and the like. The system and method of the present disclosure enable to measure and compensate for a set of physical attributes (also interchangeably referred to as primary factors, herein) that affect the duration of the exposure and delivering the required dosage, where the primary factors include environmental parameters, motion parameters of objects, geometric parameters and lamp specifications. The system 100 can include a UVGI device 102 (also referred to as device 102, herein) that includes a box-shaped housing located at a surface e.g., on a ceiling 114 of the target space (also interchangeably referred to as an enclosed space) shown in FIG. 1B.
[0037] As depicted in FIG. 1A, the device 102 can include one or more UV-C lamps 104 (also interchangeably referred to as UV lamps 104, herein) arranged inside the housing, an array of sensors 106, a microcontroller 108, communication module 110 and interface circuit 112 that interfaces with power supply, where a battery or alternating current (AC) power supply can be used to deliver power to the device 102. The device 102 may be capable to be mounted on the ceiling or wall or maybe a floor standing device as shown in FIG. 1B, according to the user's preference, and according to the overall size of the device 102.
[0038] In an embodiment, the number and location of the UV-C lamps 104 depends upon the size of the device 102. The UV-C lamps 104 are operable to emit UV rays onto the target space having surfaces and the volume. The UV lamps 108 emit the UV rays exposed to the target space with wavelength within the range of 100 nm-280 nm. In an exemplary embodiment, the ceiling-mounted UVGI device 102, as presented in the example, maybe equipped with four numbers of UV lamps of 22W each making a single unit capable of delivering 88W of UV power. As can be appreciated, the present disclosure may not be limited to this configuration but may be extended to other configurations. The array of sensors 106 is configured on the housing of device 102, the array of sensors 106 is configured to detect the set of physical attributes of the target space. The set of physical attributes can include environmental parameters, motion parameters of objects, geometric parameters, lamp specifications, and any combination thereof. In an embodiment, the array of sensors 106 can include temperature sensor, humidity sensor, light detection and ranging (LIDAR), ultrasonic sensor, camera, passive infrared (PIR) sensor, microwave, machine-to-machine messaging using any mode of electronic communication.
[0039] The environmental parameters can include the temperature of the target space, the humidity of the target space, and any combination thereof. The temperature of the target space can be measured by the temperature sensor and humidity of the target space can be measured by the humidity sensor. The geometric parameters can include the distance between the surface of the target space and the lamp, where the distance of the surfaces of the space from the lamp fixture can be measured by the sensors such as LIDAR, ultrasonic sensor, and any combination thereof. The camera or a non-camera-based sensor like a PIR sensor can be used to capture motion parameters of objects in the target space, where the objects can be any living object e.g., human. The lamp specifications can include wavelength, luminous flux of the light emitted from the lamp, and the time-dependent deterioration of the lamp.
[0040] In an exemplary embodiment, device 102 can include two sensors to detect human presence, the two sensors can include a first sensor as a PIR motion sensor (EKMC1601111) and the second sensor is a microwave Doppler radar (MW) sensor (RCWL 0516). The PIR sensor captures any human movement in the line of sight (LoS) region, an effective area of about 10x10 ft beneath the ceiling-mounted device 102. The MW sensor can sense human motion beyond LoS i.e., it triggers an alarm even for human motion behind walls, not in direct LoS of the ceiling-mounted device 102. The MW sensor can detect human motion upto a distance of 8-12 feet from the device 102. The sensor detection spheres and areas here are much greater than the UV irradiation regions, which ensures that any human motion is captured before the human enters the UV irradiation region.
[0041] In another exemplary embodiment, device 102 can include temperature and humidity monitors such as DHT11. The array of sensors 106 connected to a communication module 110 e.g., WiFi-enabled microcontroller (ESP8266). The UV lights are also actuated by ESP8266 using four different relays and digital lamp starter circuits. The set of physical attributes can be received by the microcontroller 108 from the array of sensors 106, where the microcontroller is configured to gather data, process the data, compute the required dosage and actuate the UV lamps 104.
[0042] In an embodiment, the microcontroller 108 operatively to the array of sensors 106, the microcontroller 108 operatively coupled to a memory, the memory storing instructions executable by the microcontroller 108 to receive the set of physical attributes of the target space from the array of sensors 106, the set of physical attributes pertaining to any or a combination of environmental parameters, motion parameters of objects and geometrical parameters of the target space. The microcontroller 108 can analyse the received set of physical attributes to extract a set of values from the set of physical attributes. The set of values can be obtained using an application programming interface (API) or any other form of communication.
[0043] The microcontroller 108 can obtain a history of UV exposures in form of individual and cumulative time durations, and obtain pre-calibrated time-dependent deterioration of the power output of one or more UV lamps. The microcontroller 108 can calculate a predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, where the microcontroller is configured to operate the one or more UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
[0044] The microcontroller 108 can calculate the dosage and the duration of the exposure to be delivered to the target space. The microcontroller 108 can activate the UV lamps based on a manual or an automatic event. The microcontroller 108 may initiate the disinfection process by activation of the UV lamps 104 by any or a combination of manually triggering by a user, using a switch or a mobile application or a web application or automatically trigger as per its program. In an embodiment, the microcontroller 108 can deactivate the UV lamps 104 on delivery of the required dosage. In another embodiment, the microcontroller 108, upon detection of objects attributes, can deactivate the UV lamps 104 and calculate the level of disinfection achieved based on the duration of the cycle. The microcontroller 108 compensates for the required time duration based on the dosage delivered during the previous disinfection cycle and the time of the previous disinfection cycle.
[0045] The microcontroller 108 calculates the effective required time duration of the UV exposure using the extracted set of values and compensating the values based on the history of the previous exposures in form of cumulative time duration, individual time durations and pre-calibrated time-dependent deterioration of the power output of the one or more UV lamps 014.
[0046] The microcontroller 108, upon activation, is configured to initialize the array of sensors 106 and perform automated tests to confirm the working status of the sensors 106 and initialize the UV lamps 104 and perform automated tests to ensure operating functionality. The microcontroller 108, upon activation, is configured to record the temperature and humidity levels and search for a wifi network and connect to the WiFi network of a router connected to the internet of neighbouring devices forming a “Mesh Network” of interconnected devices. The microcontroller 108 is coupled to the cloud server to receive commands for actuation and send data. The microcontroller 108 is interfaced to the motion sensors via interrupts which ensure that any movement is given the highest priority and all other operations are stopped and the motion detection routine is engaged to turn off the UV lamps 104 for all other devices in the mesh network.
[0047] The microcontroller 108 may also record the previous disinfection cycles and calculate the time for the next disinfection cycle. The microcontroller 108 records the deterioration of the lamp output power throughout its lifecycle and calibrate the dosage accordingly. The microcontroller 108 can record the human activity and calculate the time for the next disinfection cycle. The microcontroller 108 records the amount of dosage delivered between the activation and the deactivation period of one or more UV lamps. The microcontroller 108 records the effective required time duration and the actual time of exposure to the UV rays.
[0048] FIG. 1C illustrates an exemplary representation of a device installed at point E, in accordance with an embodiment of the present disclosure. The microcontroller 108 computes the required dosage and time of disinfection as follows. The power delivered by the lamps 104 at a distance of 3 meters from the device (typical distance of floor to ceiling in a commercial facility, or as measured by a sensor on board) is computed via Keitz equation. As depicted in FIG. 1C, the device 102 installed at point E, the power at any point can be described as.

[0049] UV dosage (D) is defined in terms of Power per unit Area or W/sq. m (P) multiplied by time of exposure (E) i.e., D = P x E. The device 102 can be configured to achieve any levels (in terms of log reduction) of disinfection. The disinfection time is computed via an exponential model

[0050] where Fp is the fraction of the population left of the pathogens.
Et is the exposure time,
P is the power of the UV lamp at the disinfection location
a is the decay constant which is different for different pathogen populations and
? is the temperature and humidity correction factor.
[0051] The device 102 computes the Et from the above equation and turns on the UV lamps 104 for that interval to achieve the required log level reduction. The effect of humidity and temperature is applied to this equation in the form of a percentage increase or decrease in the required dosage. The temperature and humidity correction factors are well studied and can be stored in the form of lookup tables in the microcontroller 108. The microcontroller 108 then compares the temperature and humidity values at the start of disinfection with the nominal values and applies the appropriate correction factor to the above equation from the lookup table.
[0052] The advantages achieved by the system and method of the present disclosure can be clear from the embodiments provided herein. The system 100 measures the primary factors for the space and delivers the correct dosage of UV-C radiations to the contaminated space. The proposed system ensures that the dose of UVC radiation is delivered to the contaminated space such that the required disinfection level is achieved irrespective of the dynamically changing values of the primary factors that affect the duration required to deliver such a dosage. Further, the system ensures human safe dosage limits.
[0053] FIG. 2 is a high-level flow diagram illustrating working of the system, in accordance with an embodiment of the present disclosure.
[0054] Referring to FIG. 2, at block 202, the device 102 is actuated i.e., the UV lamps 104 is activated, the device 102 monitors the motion sensors for any interrupts as soon as any of the sensors detect motion of objects the following routine is executed. At bock 204, the device 102, upon detection of human activity, configured to deactivate the UV lamps 104. A signal is broadcasted to all the devices connected to the network to deactivate their respective UV lamps 104.
[0055] The time period for which the UV lamps 104 were on is saved to a file and sent to a cloud server 206. The time at which the abort operation is executed is recorded and sent to the cloud server. The fraction of the pathogen population left for this cycle is recorded and sent to the cloud server. The device 102 waits for another start signal from the server or restarts after a predefined time to complete the disinfection process.
[0056] The microcontroller 108 operatively coupled to the memory, the memory storing instructions executable by the microcontroller 108 to receive the set of physical attributes of the target space from the array of sensors 106. The microcontroller 108 can obtain the history of UV exposures in form of individual and cumulative time durations, and obtain pre-calibrated time-dependent deterioration of the power output of the UV lamps. The microcontroller 108 can calculate a predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, where the microcontroller 108 is configured to operate the UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
[0057] The microcontroller 108 may include a microprocessor or other devices capable of being programmed or configured to perform computations and instruction processing in accordance with the disclosure. Such other devices may include digital signal processors (DSP), complex programmable logic device (CPLD), field programmable gate arrays (FPGA), application-specific assimilated circuits (ASIC), discrete gate logic, and/or other assimilated circuits, hardware or firmware in lieu of or in addition to a microprocessor.
[0058] The memory can include programmable software instructions that are executed by the processor. The processor may be embodied as a single processor or a number of processors. The processor and a memory may each be, for example located entirely within a single computer or other computing device. The memory, which enables storage of data and programs, may include random-access memory (RAM), read-only memory (ROM), flash memory and any other form of readable and writable storage medium.
[0059] FIG. 3 illustrate exemplary flow chart of a method for performing controlled exposure of UV irradiation onto a contaminated space, in accordance with an embodiment of the present disclosure.
[0060] Referring to FIG. 3, the method 300 can be implemented using microcontroller, which can include one or more processors. At block 302, the array of sensors can detect a set of physical attributes of the target space, the array of sensors configured on the device located on a surface.
[0061] At block 304, the microcontroller can receive from the array of sensors, the set of physical attributes of the target space, the set of physical attributes pertaining to any or a combination of environmental parameters, motion parameters of objects and geometrical parameters of the target space. At block 306, the microcontroller can analyse the received set of physical attributes to extract a set of values from the set of physical attributes.
[0062] At block 308, the microcontroller can obtain history of UV exposures in the form of individual and cumulative time durations. At block 310, the microcontroller can obtain pre-calibrated time-dependent deterioration of the power output of one or more UV lamps, UV lamps configured on the device. At block 2312, the microcontroller can calculate predetermined period of time to allow delivery of the predetermined dosage of the UV rays onto the target space, wherein, the microcontroller is configured to operate the one or more UV lamps for the predetermined period of time to allow delivery of the predetermined dosage of the UV rays, the predetermined dosage determined as being required to decontaminate the target space.
[0063] It will be apparent to those skilled in the art that the system 100 of the disclosure may be provided using some or all of the mentioned features and components without departing from the scope of the present disclosure. While various embodiments of the present disclosure have been illustrated and described herein, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the spirit and scope of the disclosure, as described in the claims.

ADVANTAGES OF THE PRESENT DISCLOSURE
[0064] The present disclosure provides a system that delivers the correct dosage of UV-C radiation to the closed contaminated space.
[0065] The present disclosure provides a system that measures the primary factors that affect the disinfection time duration for the space, where the primary factors include environmental parameters, geometric parameters and lamp specifications.
[0066] The present disclosure provides a system that offsets the dosage of UV-C radiation for the variation of any or all the primary factors.
[0067] The present disclosure provides a system that ensures that the dose of UVC radiation is delivered to the contaminated space such that the required disinfection level is achieved irrespective of the dynamically changing values of the primary factors that affect the duration required to deliver such a dosage.
[0068] The present disclosure provides a system that ensures human safe dosage limits.