147 results about "Airborne exposure" patented technology

The invention discloses a laser additive pore defect monitoring method based on a multi-sensor fusion network and a related device. The method comprises the following steps: acquiring multi-source airborne acoustic emission signals which are acquired by a plurality of airborne acoustic emission sensors with different resonant frequencies and are generated along with the melting process of a laser powder bed; inputting the multi-source airborne acoustic emission signal into a pre-trained pore defect monitoring model, and outputting a pore defect monitoring result; wherein the pore defect monitoring model is obtained by training a multi-source sensing adaptive excitation fusion lightweight convolutional neural network by using a multi-source data set; the multi-source sensing adaptive excitation fusion lightweight convolutional neural network comprises a parallel dynamic weight multi-scale residual convolution module, a multi-sensor information adaptive fusion module, an asymmetric lightweight depth feature extraction module and a defect identification module. According to the invention, monitoring of in-situ pore defects in the melting process of the laser powder bed under complex working conditions of multi-sensor information interpretability intelligent fusion driving is realized, and the accuracy and stability of acoustic monitoring in the melting process of the laser powder bed are enhanced.

A mask apparatus that is configured to prevent airborne pathogens from reaching an individual by actively mitigating airborne droplets that have a pathogen. In one example, the mask apparatus comprises a sensor device, a mitigator device, and a controller. The sensor device comprises an aerosol detector that is configured to perform a light measurement of an airborne aerosol droplet in an area proximate to the wearable apparatus. The mitigator device is configured to initiate a mitigation action directed at the airborne aerosol droplet. The controller is data communication with the sensor device and the mitigator device. The controller is configured to determine that the airborne aerosol droplet has a pathogen based at least in part on the light measurement captured by the sensor device and cause the mitigator device to initiate the mitigation action based on the airborne aerosol droplet having the pathogen.

The invention relates to a method for diagnosing damage to a vehicle component generating airborne and / or structure-borne noise emissions, wherein data about these emissions are used for diagnosis, in which in a first method step (M1) - the measured airborne and / or structure-borne noise emissions are converted into airborne and / or structure-borne noise data, - at the same time, the current operating situation of the vehicle is determined by recording operating situation data, - and the detected data is stored in a computer, in which in a second method step (M2) - the airborne and / or structure-borne sound data is transformed using mathematical methods in such a way that the first transformed airborne and / or structure-borne sound data generated in this way can be analysed and evaluated, and in which in a third method step (M3) a normalisation process is carried out, - in which a reference data set associated with the current operating situation data is determined, which contains such transformed reference airborne and / or structure-borne noise data that would be formed in this operating situation for a vehicle without damage, - in which this reference data set is compared with the first transformed airborne and / or structure-borne sound data to generate normalised transformed airborne and / or structure-borne sound data, and - in which a detected difference gives an indication of airborne and / or structure-borne noise emitted by a defective vehicle component. The invention also relates to a diagnosis system, with which the method can be operated.

An assembly for transmitting airborne acoustic waves, configured to be combined with a musical wind instrument having side holes, which instrument comprises a tubular body defining an air column and extending locally substantially along a first axis, the transmission assembly comprising: a device for emission of airborne acoustic waves in the air column, comprising an actuator which is separate from the tubular body and able to transform an electrical signal into airborne acoustic waves; a device for reception of airborne acoustic waves, comprising: a microphone suitable for receiving, after their propagation in the air column, the waves transformed by the actuator, the microphone being positioned off-centre with respect to the first axis; a transformation device suitable for transforming the waves received by the microphone into an electrical signal that is characteristic of a configuration of blocking of the side holes of the instrument.

A method (700) for detecting one or more pests in a trap (100) is disclosed. The trap (100) comprises one or more entrances (102), a capture compartment (104), one or more gas sensors (106) arranged to register airborne substances released in the capture compartment (104) and one or more non-gas sensors (108) arranged to register one or more environmental parameters in the capture compartment (104) and / or in the one or more entrances (102), a control circuitry (110), comprising a processor (112) and a memory (114), arranged to control operation of the one or more gas and non-gas sensors (106, 108), and a data processing model (116) communicatively connected to the control circuitry (110). The method comprises obtaining (702) gas sensor data (204) indicative of the airborne substances using the one or more gas sensors (106), obtaining (704) non-gas sensor data (206) indicative of the one or more environmental parameters using the one or more non-gas sensors (108), providing (706) the gas sensor data (204) and the non-gas sensor data (206) as inputs to the data processing model (116), and generating (708) output data (208) from the data processing model (116), wherein the output is indicative of presence or non-presence of the one or more pests in the capture compartment (104).

The invention discloses a laser powder bed melting process acoustic monitoring signal processing method and a related device. The method comprises the following steps: performing high-frequency physical information data enhancement on an airborne acoustic emission signal through a pre-emphasis filter; performing discrete Fourier transform on the airborne acoustic emission signal after the high-frequency physical information data enhancement to obtain a frequency spectrum sequence signal of the airborne acoustic emission signal; extracting a key low-frequency sequence signal and a key high-frequency sequence signal from the frequency spectrum sequence signal, and reconstructing the key low-frequency sequence signal and the key high-frequency sequence signal according to an original frequency spectrum sequence sequence to obtain a one-dimensional key frequency spectrum sequence signal; converting the one-dimensional key frequency spectrum sequence signal into a two-dimensional key frequency spectrum sequence gray mapping image through an improved gray mapping method; and performing gray mapping feature contrast enhancement on the two-dimensional key frequency spectrum sequence gray mapping image to obtain a key frequency spectrum sequence gray enhancement mapping image. According to the method, physical and reasonable laser powder bed melting acoustic signal defect information expression can be richer and clearer, so that the credibility of defect information expression and the accuracy of defect feature description are improved, and the accuracy of defect acoustic monitoring in the laser powder bed melting process is improved.

A portable airborne pathogen control apparatus and system. Aspects of the present disclosure provide for a portable airborne pathogen control apparatus configured to be selectively positioned within an interior room and configured to enable a floor-to-ceiling flow of air within the interior room. The portable airborne pathogen control apparatus may comprise a housing with an air intake disposed at a lower area of a base housing and an air outlet disposed at an upper area of an elongated duct extending from the base housing. A blower fan housed within an interior chamber of the housing may be configured to direct a floor-to-ceiling flow of air through the interior chamber from the air intake to the air outlet. A volume of air directed through the interior chamber of the housing may be disinfected using one or more UV-C emitters and / or cold plasma generator(s) housing in the interior chamber of the housing.

A protection device for preventing exposure to undesired airborne material. The device including a filter assembly having a filter, and a proximal and a distal layer configured to hold the filter sandwiched between the proximal layer and the distal layer, a one-way valve positioned in the filter assembly and coupled to the proximal layer of the filter assembly, and a seal positioned along a peripheral edge of the filter assembly, the filter assembly and the seal defining a first safety compartment for enclosing a user's mouth and nose. The device can include an eye shield assembly having a skirt extending from the filter assembly and positioned distal to the seal, an optically transparent eye shield coupled to the skirt to form a continuous surface from the filter assembly to a top portion of the eye shield, and a frame coupled to the frame assembly and eye shield assembly.

A system includes an anti-allergen formulation and a device that generates droplets of the formulation to be delivered to an air environment. The aqueous formulation includes an organic acid having a vapor pressure between 0.001 Pa and 172 Pa and an aqueous solubility of at least 24.99 grams organic acid per 100 grams water, both at room temperature and standard pressure. The device can generate droplets of the formulation having a median particle size (Dv50) of no greater than 120 micrometers. The formulation delivered as droplets in an air environment can provide a statistically significant reduction, over a control, in one or more airborne allergens as measured by an enzyme linked immunoassay. In addition, the formulation delivered as droplets in the air environment can be effective to neutralize greater than 50% of one or more airborne allergens present in the air environment.

The acoustic signal output device has a drive unit and a housing that accommodates the drive unit therein. Here, the acoustic signal emitted from the drive unit to one side is used as a first acoustic signal, and the acoustic signal emitted from the drive unit to the other side is used as a second acoustic signal. A wall portion of the housing is provided with a single or a plurality of first sound holes for leading out a first sound signal to the outside, and a single or a plurality of second sound holes for leading out a second sound signal to the outside. In addition, the attenuation rate of the first acoustic signal at a second point farther from the acoustic signal output device than the first point, with a predetermined first point at which the first acoustic signal arrives as a reference, is less than or equal to a predetermined value that is less than the attenuation rate due to airborne propagation. Alternatively, the amount of attenuation of the first acoustic signal at a second location based on the first location is greater than or equal to a predetermined value that is greater than the amount of attenuation caused by airborne propagation.

The present disclosure provides a quarantine air-conditioning system for preventing a spread of airborne infectious diseases, and more particularly, to a quarantine air-conditioning system for preventing a spread of airborne infectious diseases, which may accurately predict a risk of infection with airborne infectious diseases to thus effectively prevent a spread of the airborne infectious diseases, and a method for preventing a spread of airborne infectious diseases using the same.

A method for specifying desired quantities of the energy flux of the combined waves of acoustic radiation pressure to apply producing a mid-air haptic pushing force, which has the effect of simultaneously reducing the harmonic distortion present is described. Further, a method for communicating only the summaries of acoustic field contributions at the required locations in the form of summed portions of the relatively small matrix whose row and column count depend only on the control point count is described. Further, phased arrays of ultrasonic speakers can produce a relatively large amount of acoustic energy which is usually directed in a specific direction or focused to a particular point depending on the application of the array. Further, to allow the system to be driven more strongly than usual, the complex-valued linear system that governs the drive signal to each control point is solved twice. Further, to achieve mid-air haptics with high precision the radiation pressure generated must be modelled accurately.

The present invention relates to a system for detecting and predicting the presence of pathogens in a predetermined area of a field comprising a network of measurement stations, each measurement station comprising a first type of sensor adapted to measure environmental data, and a second type of sensor adapted to detect airborne pathogens, the system further comprising a computer processing unit adapted to collect the data to the two types of sensors and treat them by artificial intelligence to provide real-time spatially and temporally resolved data about the early detection of the pathogens as well as environmental data that are correlated to the spread and development of the pathogens and the plant disease and identify specific patterns representative of situations where treatment is required and a communication device able to send a signal to said field user indicating in which area treatment is required.

The invention relates to a method for locating an anomaly in a rotor blade (6) of a wind turbine (1), comprising the following steps: - Detection of airborne sound by means of at least one airborne sound sensor (11, 21, 31) arranged within the rotor blade (6); - Detection of structure-borne sound by means of at least one structure-borne sound sensor (12, 22, 32) arranged in or on the rotor blade (6); - Determining time points (t K , t L ), to which an event in which airborne sound and structure-borne sound are emitted at an unknown origin position in or on the rotor blade (6) is reflected in the detected airborne sound and in the detected structure-borne sound; - Determining a time difference (Δt) between the times (t K , t L ); and - Determining the origin position based on the time difference (Δt) and the positions of the airborne sound sensor (11, 21, 31) and the structure-borne sound sensor (12, 22, 32). The invention further relates to an arrangement suitable for carrying out the method for locating an anomaly in a rotor blade (6) of a wind turbine (1).

A method (700) for detecting one or more pests in a trap (100) is disclosed. The trap (100) comprises one or more entrances (102), a capture compartment (104), one or more gas sensors (106) arranged to register airborne substances released in the capture compartment (104) and one or more non-gas sensors (108) arranged to register one or more environmental parameters in the capture compartment (104) and / or in the one or more entrances (102), a control circuitry (110), comprising a processor (112) and a memory (114), arranged to control operation of the one or more gas and non-gas sensors (106, 108), and a data processing model (116) communicatively connected to the control circuitry (110). The method comprises obtaining (702) gas sensor data (204) indicative of the airborne substances using the one or more gas sensors (106), obtaining (704) non-gas sensor data (206) indicative of the one or more environmental parameters using the one or more non-gas sensors (108), providing (706) the gas sensor data (204) and the non-gas sensor data (206) as inputs to the data processing model (116), and generating (708) output data (208) from the data processing model (116), wherein the output is indicative of presence or non-presence of the one or more pests in the capture compartment (104).

The nose mask is intended to be used during an airborne pandemic. The nose mask is a single triangle / cone shaped that covers only the nose, that comes with two ear elastic bands or a single head elastic band for support. The nose mask is designed to be disposable with a filter for better protection and to minimize the passage of aerosols, fluids and airborne pathogen agents or to be made with washable material allowing users to re-use it.

A disposable, flat-fold respirator is presented that includes a mask body that includes a plurality of panels which may fold in towards each other and may unfold into an open configuration. The mask body includes a single layer of charged filter material. The plurality of panels includes an upper panel, a lower panel, and a central panel. The central panel is connected to the upper panel and lower panel. The respirator filters at least 95% of airborne particles with a mass median aerodynamic diameter of 0.3 µm. A harness is secured to the mask body.

To provide an apparatus and a method for destroying microorganisms on surfaces of grains using sound.SOLUTION: Provided is a method for the destruction of microorganisms present on the surface of a plurality of grains or dried food products disposed in a container having a surface, the method including: subjecting the surface of the container to a first periodic vibrational excitation having a first amplitude effective to cause the plurality of grains or dried food products disposed in the container to become airborne; subjecting the plurality of airborne grains or dried food products to a second periodic vibrational excitation having a second amplitude relative to the surface of the container effective to increase collisions therebetween, whereby the microorganisms are destroyed by the collisions of the airborne grains or dried food products.SELECTED DRAWING: Figure 5

A system for a vehicle includes data processing hardware, memory hardware in communication with the data processing hardware, the memory hardware storing instructions that, when executed on the data processing hardware, cause the data processing hardware to perform operations that include detecting airborne contaminants within a cabin, determining if the airborne contaminants exceed a contaminant threshold, and reducing a level of airborne contaminants within the cabin by controlling at least one vehicle system when the airborne contaminants exceed the contaminant threshold.

Fabric materials are disclosed that have been treated with a water resistant and antimicrobial treatment. The water resistant and antimicrobial treatment includes a combination of a durable water resistant composition and an antiviral composition. Protective garments can be made from the fabric that provide protection against airborne pathogens by preventing penetration through the fabric material and by destroying any pathogens that land upon the fabric.

The present specification, in some embodiments, describes a personal wear device that direct the flow of air away from a person's face, reducing or blocking the flow of infectious pathogens towards a patient's naso-oral area thus reducing the risk of inhalation of infectious or noxious pathogens. In another embodiment, the present specification describes a personal air management mask system for use by a patient for reducing or preventing exposure to and inhalation of infected aerosol during a medical procedure.

The invention discloses a hospital airborne infection risk real-time dynamic assessment method and device, a medium and a product, and relates to the technical field of public health, and the method comprises the steps: determining multi-person behavior parameters based on a person number index; performing feature extraction on the video monitoring data of the hospital by adopting a machine learning algorithm to generate a target detection image; obtaining a tracking target based on the personnel ID and the target bounding box in the target detection image by using a Byte Track algorithm; matching the tracking target with the target detection image; converting the multi-target tracking result into conversion data by using a perspective transformation method; an improved Wells-Riley model is adopted to determine the infection probability based on the multi-person behavior parameters and the conversion data; and performing real-time dynamic assessment on hospital airborne infection risks according to the infection probability. According to the method, the hospital airborne infection risk can be effectively assessed, and effective technical reference is provided for timely prevention and reduction of hospital infection possibility.

A direct air capture system for capturing, containing, and transporting airborne matter includes a filter assembly, a particle container configured to receive airborne matter loosened from the filter assembly, a means for cowling venting configured to utilize vacuum pressure to transport the airborne matter. The system also includes an electric motor assembly having a motor drive, a drive gear, and a drive shaft, as well as at least one scrubbing brush configured to loosen airborne matter from the filter assembly.

A system for the detection of airborne viruses is disclosed. The system comprises at least one local detector, the local detector comprising an aerosol collection module arranged to gather the particulate matter from the aerosol sample onto a collection chip, an analysis module arranged for detecting the amount of the viruses that are part of the particulate matter contained in the collected aerosol sample, and an output module arranged to emit a warning signal when the total viral content surpasses a predetermined threshold.

Laboratory automation systems and instruments are disclosed herein comprising components that may facilitate de-contamination of the instrument using an airborne disinfectant. Maintaining the airborne disinfectant within a predetermined range can be achieved by creating a feedback loop between generating the airborne disinfectant from a disinfectant solution. Instruments disclosed can comprise vaporization modules in communication with reservoirs of a disinfectant solution, or receive cleaning cartridges comprising the disinfectant solution, which may be energized to generate the airborne disinfectant. Decontamination methods are also disclosed herein.

Aspects of the present disclosure include a filtration system. The filtration system includes a mask and a hybrid filter for use with an activated carbon-based filter and attachable to the mask. The mask may include an interface around a periphery of the mask for sealing engagement with a skin surface of a user. The hybrid filter may include a chamber configured to receive the activated carbon-based, an electro-ionic filter, and a Faraday cage. The electro-ionic filter is in series with the material-based filtration element and includes a plurality of electrodes arranged in series with each other. The electrodes of the plurality of electrodes are evenly spaced apart from each other in an alternating positive-polarity negative-polarity sequence. The Faraday cage surrounds at least the electro-ionic filter.

A method of control of an indoor space, in particular of parameters, preferably of well-being, of the indoor space; wherein the control method comprises the following steps of : determining, in particular calculating and / or measuring, at least three first parameters, preferably at least four or five first parameters, selected from the group of parameters : temperature; humidity; relative air speed; heat insulation of persons and / or current month; metabolic rate of persons; noise; carbon dioxide; carbon monoxide; volatile organic compounds (VOC); airborne particulate matter of the PM1 type; airborne particulate matter of the PM2. 5 type, airborne particulate matter of the PM10 type; - calculating an index, preferably related to well-being in said space, using the at least three parameters, preferably the at least four or five parameters; - comparing said index, preferably related to well-being in said space, to at least a threshold value range; if said index is outside the at least one threshold value range, defining how at least one second parameter must vary in order to bring said index within the at least one threshold range; wherein said second parameter is selected from the group of parameters : air speed, temperature, humidity, noise, carbon dioxide, carbon monoxide, volatile organic compounds (VOC); airborne particulate matter of the PM1 type, airborne particulate matter of the PM2. 5 type, airborne particulate matter of the PM10 type; and defining an action to be performed to achieve the defined change of said at least one second parameter.

Provided are innovative compositions for tethering blocking an inactivating of airborne respiratory infectious viruses. The compositions comprise bispecific proteins with two different antigen binding regions (ABR), which are typically configured as immunoglobulin “single variable domains” (ISV). A first ISV binds to a surface protein found on an airborne infectious virus. A second ISV binds to a mucin protein, e.g. a mucin protein present on ocular, nasopharyngeal, tracheal and / or oral surfaces of a mammal. The two ISV are joined by a polypeptide linker.

Methods for revitalizing components of a plasma processing apparatus that includes a sensor for detecting a thickness or roughness of a peeling weakness layer on a protective surface coating of a plasma processing tool and / or for detecting airborne contaminants generated by such peeling weakness layer. The method includes detecting detrimental amounts of peeling weakness layer buildup or airborne concentration of atoms or molecules from the peeling weakness layer, and initiating a revitalization process that bead beats the peeling weakness layer to remove it from the component while maintaining the integrity of the protective surface coating.

The invention relates to an air purification device used in all confined spaces such as tents, containers, and construction machinery after earthquakes and natural disasters. It protects people in debris areas and enclosed spaces from harmful airborne agents and reduces the mechanical, chemical, and biological load of the air, which is polluted by high human density in these small and confined areas, by filtering it.