200 results about "Air sample" patented technology

A remote test apparatus is configured to simulate an environment of at least one remotely located room and configured to receive at least one air sample from the at least one remotely located room. The apparatus includes a sealed enclosure forming an interior cavity and including an inlet in connection with the at least one remotely located room and an outlet in connection with a sample collection unit. The sample collection unit is configured to communicate the at least one air sample from the remotely located room at a first flow rate. The apparatus further includes at least one sensor disposed in the interior cavity and at least one air transfer unit configured to transfer test air from the interior cavity of the sealed enclosure to the at least one sensor at a second flow rate.

The invention discloses a hog house air environment detecting and sampling device and method, the hog house air environment detecting and sampling device comprises a supporting seat and an air suction cylinder arranged on the supporting seat, a sampling cylinder mounting seat is rotatably mounted on the supporting seat, and a plurality of sampling cylinders are placed on the sampling cylinder mounting seat. According to the hog house air environment detecting and sampling device and method, through cooperation of the air extraction driving assembly, the air guide assembly and the air extraction barrel, hog house air extraction is achieved, in the hog house air extraction process, the air guide assembly communicates with the sampling barrel, then the extracted air is guided into the sampling barrel in the mode that air in the air extraction barrel is squeezed, and the hog house air environment detecting and sampling device is used for detecting the hog house air environment. According to the sampling device, the air guiding assembly is arranged on the sampling barrel to complete air sample retention, after air sample injection is completed, the air guiding assembly and the sampling barrel are separated, under the cooperation of the rotating preparation part and the sampling barrel placement base, sequential switching of stations where the sampling barrel is located is achieved, and support is provided for automatic continuous sampling of the sampling barrel.

The invention discloses an air sampling strategy optimization method and system based on artificial intelligence, and relates to the technical field of environment monitoring, an air quality prediction model is constructed based on a neural network, historical environment monitoring data is taken as training data, the air quality prediction model is trained and optimized, and the air sampling strategy optimization method and system based on artificial intelligence are obtained. Predicting and outputting an air quality change trend in a period of time in the future; formulating an optimal sampling strategy based on an output result of the air quality prediction model in combination with air quality data, meteorological data and pollution source data collected in real time; and automatically controlling the operation of the air sampling equipment according to the optimal sampling strategy. According to the method, the multi-source environment data is collected in real time, the high-precision air quality prediction model is constructed, the optimal sampling strategy is made in combination with the multi-target optimization method, operation of the air sampling equipment is automatically controlled, the sampling strategy can be dynamically adjusted according to real-time environment changes, and the pertinence and effectiveness of air sampling are improved.

The invention relates to an air detection method and system, and relates to the technical field of air detection, and the method comprises the steps: collecting the space detection information of a detection house and the specification of sampling equipment; calling a space area value, a space layout condition and a space placement condition based on the space detection information; determining the area sampling number by combining the space area value and the sampling equipment specification; generating a sampling initial position point according to the spatial layout condition and the area sampling number; determining a sampling adjustment position point according to the spatial placement condition and the sampling initial position point; and determining sampling duration according to the sampling adjustment position point and the specification of the sampling equipment, and controlling the preset sampling equipment to collect the air sample based on the sampling adjustment position point and the sampling duration. The method has the effect of improving the accuracy of a detection result when air detection is carried out in a room.

The invention provides an air-ground cooperative target detection and feature analysis system and method, and the method comprises the steps: correspondingly obtaining an air sample database and a ground sample database through collection, data cleaning, enhancement, labeling, feature extraction and classification; the air feature sample data set and the ground feature sample data set are processed and screened through a sample processing module, the screened air sample data set and the screened ground feature sample data set are input into a model for training, and a trained air target recognition model and a trained ground target analysis model are obtained; and the two models are optimized respectively, and detection and feature analysis of the target are realized in combination with multi-modal feature fusion. Compared with the prior art, through mutual combination of the aerial target identification model and the ground target analysis model and multi-modal feature fusion, target detection and feature analysis are realized based on application scene training optimization, and target detection precision and feature analysis accuracy are improved.

The invention relates to an environmental governance device based on digital twinning and Internet of Things. The environmental governance device comprises a detection box, a base, an air inlet pipe, a power mechanism and a control mechanism. The detection box is used for collecting an air sample and sending detection data to the data processing center; the base is arranged below the detection box, adopts a triangular supporting structure to improve the stability, and can be fixed on the ground or buried in soil; the air inlet pipe is mounted above the detection box and is used for guiding air into the detection box; the power mechanism drives the fan blades to rotate through natural wind and drives the driving gear to act through the connecting rod and the rotating shaft. And the control mechanism is linked with the power mechanism, and automatically controls the opening and closing of the air inlet channel according to the natural wind change, thereby optimizing the air sampling process. The device is compact in structure, has the advantages of environmental protection, adaptive adjustment, high reliability and easy large-scale deployment, can be widely applied to urban environment monitoring, ecological management and smart city construction, and provides real-time and accurate basic data support.

An air sampler adapter (10) adapted to air-tightly contain an air sampling unit (11) remotely sampling air of a zone of interest via a pipe (21), comprising a main portion comprising a housing (15) and a base portion (16) comprising fixing means (161), wherein the fixing means (161) is configured to fix the air sampling unit (11) within said housing (15), a first end portion (17) comprising a sampled air inlet (14) and a first locking mechanism (12) adapted to be switched between an open position during sampling and an airtight closed position, and a second end portion (18) comprising an air outlet (141) and a second locking mechanism (13) adapted to be switched between an open position during sampling and an airtight closed position wherein the air sampler adapter is detachable from the pipe (21) connecting it to the zone of interest and in that the first and second locking mechanisms (12, 13) are adapted to be locked in airtight closed position for clean transportation when detached.

The invention relates to the technical field of environment monitoring, and discloses a real-time detection method and system for concentration and components of air particulate matters. According to the method, signal fragments are intercepted from continuous detection flow of an air sample in a segmented mode to serve as analysis elements, a de-noising characteristic signal set is generated through background field stripping, and background field parameters are recorded. And positioning a high-concentration characteristic peak cluster in the de-noised signal to mark a key detection window, and constructing a corresponding dynamic detection task sequence. And calling a special analysis thread to carry out collaborative analysis on the de-noised characteristic signal set to obtain a hierarchical judgment result. And the result is coupled and compared with background field parameters, and if conflicts exist, the dynamic detection task sequence is recombined in real time. And updating and executing a control strategy for a subsequent detection flow according to the recombined sequence, thereby forming a self-adaptive closed-loop detection process. According to the invention, the accuracy, depth and adaptive capacity of real-time analysis of pollution components in a complex environment are improved.

A gas phase standard preparation device and method of use for creating a final reference material is disclosed. The final reference material is used to quantitate certain gaseous compounds in collected air samples. This is accomplished by providing a sealed ampule tube with an ampule containing reference material that is eventually breached by the gas preparation device. Once the ampule is breached, the reference material within the ampule is blended with a diluent gas and forced into a reference material cylinder. The concentration of the final reference material within the reference material cylinder can then be verified for use in testing collected air samples. Accordingly, this device allows for creating a custom final reference material onsite in a laboratory without the need for shipping in pre-made compressed gas cylinders for air quality testing.

The invention relates to a device (1) for measuring clouds and fog, comprising a first optical particle sensor (2) for the time-resolved measurement of at least one parameter of particles (3) in a first sample volume (4) of air from an environment (5), with a first volume flow measuring device (6) for determining a flow rate of the air through the first sample volume (4), wherein a computing device (7) is provided, by means of which a presence of a cloud and / or fog in the air can be determined from the at least one parameter.

The present application relates to the detection method of peroxynitrate in the atmosphere, comprising: the six-way valve is adjusted to the sampling mode, the carrier gas and air inlet are opened, the carrier gas is swept to the chromatographic column and the electron capture detector in turn after passing through the first passage of the six-way valve, and the negative pressure device on the downstream side of the electron capture detector is opened at the same time; the air enters the sampling ring through the second passage of the six-way valve, and the excess air is discharged by using the air pump; the six-way valve is adjusted to the detection mode, the carrier gas enters the sampling ring through the third passage, the air sample in the sampling ring is taken out and brought into the chromatographic column; the PANs in the air sample are separated in the chromatographic column, and then enter the electron capture detector for detection, at the same time, the internal pressure of the electron capture detector is regulated and controlled by the negative pressure device to be stable negative pressure, the peak of the compound to be detected is accelerated, and the sensitivity of the electron capture detector to the detection is improved.

The invention relates to the technical field of environment monitoring, in particular to an air sampling device and method for environment monitoring, the air sampling device comprises a placement table, a lift-off platform and a sampling assembly, a winding motor is fixed in the placement table, one end of a lifting rope is connected with the output end of the winding motor, and the other end of the lifting rope is connected with a sampling mounting table; the helium bag is connected with the sampling mounting table; the sampling assembly comprises a gas inlet pipe, a sampling pump, a gas guide pipe, a sampling container, a sampling shell, a vacuum pump and a connector, the sampling shell is fixed on the sampling mounting table, the sampling container is rotatably arranged in the sampling shell, the gas guide pipe is slidably arranged on the sampling shell and used for being connected with the sampling container, the sampling pump is communicated with the gas guide pipe, and the gas inlet pipe is communicated with the sampling pump; the connector is arranged on the sampling shell in a sliding mode and used for being connected with the sampling container, the vacuum pump is connected with the connector, and air at different heights can be collected more conveniently so that air quality monitoring can be better carried out.

The utility model discloses an atmospheric VOC environment detection device which comprises a sleeve, the bottom of the sleeve is installed on a flat car, the inner wall face of the sleeve is in sliding connection with an inner cylinder bottom sliding block assembly, a center nut is arranged in an inner cylinder, the center nut is in threaded connection with a threaded shaft at the output end of a lifting motor, and the lifting motor is installed on the top face of a lifting disc. The lifting disc is slidably connected with the inner wall face of the inner cylinder, a hinge seat annularly arranged on the lifting disc is hinged to a probe rod assembly through a torsional spring, and a main air pipe of the probe rod assembly is connected to a detection mechanism on the flat car. The probe rod assembly in the device can convey a collected air sample into the detection mechanism to be analyzed, so that the concentration of VOC gas in the atmosphere is detected, the probe rod assembly can be collected into the inner cylinder in the device transferring process and further collected into the sleeve along with the inner cylinder, and the device has the advantages of being dustproof, adjustable and easy to transfer.

This invention discloses an atmospheric oxidizing indicator detection device, relating to the field of atmospheric detection technology. The proposed solution includes a housing, and further comprises: a condenser tube installed within the housing for dehumidifying incoming air; a splitter, the inlet of which is connected to the outlet of the condenser tube, for splitting the dehumidified air sample into a first branch and a second branch; a photodetector unit, comprising a photoreaction tube, a first mixing tank, and a first detector connected in sequence, the inlet of the photoreaction tube being connected to the outlet of the first branch of the splitter; and a catalytic detection unit, comprising a catalytic reaction tube, a second mixing tank, and a second detector connected in sequence, the inlet of the catalytic reaction tube being connected to the outlet of the second branch of the splitter. This overcomes the inherent time difference problem of sequential measurements using a single detector.

The application relates to a power distribution system fire early warning device based on pyrolysis particle detection and a mounting method, which comprises a pyrolysis particle detection device including a sampling part and a monitoring part, the monitoring part includes a pyrolysis particle detector, the sampling part includes a multi-pass connector and a plurality of wind receivers, the multi-pass connector has a plurality of sample inlet joints and a sample outlet joint, and each wind receiver is connected with a sample inlet joint; the pyrolysis particle detector is connected with the sample outlet joint through a pipeline; the wind receiving pipe is fixed on the position facing the heat dissipation fan through a mounting plate and a supporting rod, the positive pressure formed by the heat dissipation fan on the wind receiving pipe enables the sampling part to collect and detect the air sample from the target power distribution equipment without negative pressure extraction or only with a small negative pressure; more negative pressure equipment does not need to be configured due to the increase of the pipeline, the cost is reduced, the multi-pass connector increases the interface flexibility, the pipeline is conveniently expanded in the later period, and the monitored power distribution equipment is increased.

The invention discloses a Z-Wave-based air-breathing smoke sensing detection early warning system, and the system comprises a sampling detection unit which is used for extracting an air sample of a monitoring region through a plurality of air suction pipelines, and generating smoke particle concentration data through a laser scattering sensor; the dynamic analysis unit is used for receiving the smoke particle concentration data based on a Z-Wave protocol and generating early warning signals according to the concentration gradient change and preset threshold grading; and the linkage execution unit is used for mapping the early warning signal to Z-Wave network equipment and driving a ventilation system, a spraying device and an alarm to execute hierarchical response actions. By means of active inspiration sampling and Z-Wave wireless network deployment, large-range non-blind-area early smoke detection is achieved, concentration gradient intelligent analysis and equipment hierarchical linkage response are combined, and the timeliness and accuracy of fire early warning and the collaboration of emergency disposal are remarkably improved.

The utility model provides a cell cryopreservation bag. The cell cryopreservation bag comprises a bag body, a sample introduction part and a sampling part, the bag body comprises a plurality of communicated cavities, and a channel is formed between every two adjacent cavities so that the adjacent cavities can be communicated. The sample introduction part comprises a sample introduction port and an air sample introduction pipe connected with the sample introduction port, and the air sample introduction pipe is used for being connected with the external atmosphere so that the air pressure in each cavity can be kept consistent with the external atmospheric pressure. The sampling part is arranged on the bag body and corresponds to the cavity. According to the cell cryopreservation bag, the air sample injection pipe is arranged on the sample injection part, and the channels are formed between the cavities, so that the cavities can be communicated with the outside atmosphere after sample injection is completed, cell suspension samples can be automatically and uniformly subpackaged into the cavities, the subpackaging uniformity of the cell suspension samples is improved, and the subpackaging efficiency of the cell suspension samples is improved. Manual extrusion of an operator is not needed, so that the operation is convenient, the time is shortened, and the cell cryopreservation efficiency is improved.

The embodiment of the utility model relates to the technical field of air pollutant or nuisance source identification and detection, and discloses air pollution and nuisance investigation equipment and system. The investigation equipment comprises at least two air inlet units and sensor units correspondingly connected with the air inlet units. A central processing unit; and a motion unit; wherein the at least two air inlet units are inclined in different directions and collect at least two air samples from different directions and different positions, and the central processing unit is connected with each sensor unit and the motion unit. Through the mode, the embodiment of the utility model can collect at least two air samples from different directions and different positions, accurately and efficiently detect the concentration data of various air pollutants in the air samples, and utilize the concentration data to control the equipment to effectively move towards a pollution source so as to quickly position the position of the pollution source.

A method for passive breathing alcohol detection, the method comprising: A) passively obtaining a first air sample from air within a vehicle interior; b) determining the concentration of (i) tracer gas and (ii) analyte present in the first air sample; c) passively obtaining a second air sample from the air within the interior of the vehicle; d) determining the concentration of (i) tracer gas and (ii) analyte present in the second air sample; e) continuing to passively obtain a number N of air samples from the air within the interior of the vehicle and, for each air sample obtained, determining the concentration of tracer gas and analyte present in the air sample; f) determining the number of peaks of the concentration of the tracer gas and the number of peaks of the concentration of the analyte present in each of the air samples; g) determining a confidence interval based on the number of peaks of the concentration of the tracer gas and the number of peaks of the concentration of the analyte; and H) controlling operation of the vehicle based on a function of the confidence interval and the concentration of the analyte present in the air sample.

Provided is a portable biosensor that includes a sample filter cartridge, a filter collector, an optical sphere, an electromagnetic radiation emitter, a photo-detector, a processor, a signal display, a vacuum pump, and a power supply. The sample filter cartridge selectively removes small molecules to minimize spectral interference in the detection signal. The sample is concentrated onto the filter collector and subjected to illumination by the electromagnetic radiation emitter, producing Raman-scattering. The optical sphere collects and distributes the Raman-scattering shifts, which then pass through a spectral filter to produce spectral filtered scattering, which is then reflected by the concave holographic flat-field grating onto the photo-detector. The data is displayed graphically to provide the Raman-scattering shift data. The data is compared with a database for sample identification. The device is contained within a housing that is small enough to be easily transported for field use.

A system and method for analyzing an air sample from a human uses a collection module that has a plurality of metal oxide semiconductor sensors that have different resistance responses to different gaseous compounds. A detector circuit reads the output of the sensors as analog signals for both ambient air and the air sample from the human. The ratios of the analog signals from ambient air and from the air sample can be compared to similar information from other health and unhealthy human subjects to determine the health status of the human. In one embodiment the system is used for breath analysis.

The invention relates to the technical field of nursing safety early warning, and particularly discloses a clinical nursing potential safety hazard intelligent analysis and early warning system, which is characterized in that when a nurse performs dressing change operation on a patient, a dynamic image of a wound area on that day is acquired in real time through equipment, wound features of the patient are extracted from the dynamic image, and a wound healing index of the patient is generated in real time; a three-dimensional space track of dressing change operation of a nurse on a patient is collected in real time through wearable motion capture equipment, then key features of the nurse in the dressing change operation are obtained, and finally the operation normalization score of the nurse is evaluated; deploying a multi-channel air sampling device, collecting an air sample of the ward, and calculating a microorganism exceeding coefficient of the ward in a set dressing change time period by combining data of a temperature and humidity sensor of the ward in the set dressing change time period; the infection risk level of the corresponding wound surface of the patient is comprehensively evaluated, corresponding early warning operation is carried out, a comprehensive evaluation and early warning mechanism is provided, and the intelligence and accuracy of the medical environment are remarkably improved.

The invention provides an air purification effect stability quantitative evaluation method and device and a related product, and the method comprises the steps: setting sampling points in three-dimensional grid distribution in a target space to construct a sampling array, controlling the environmental parameters of the target space, and releasing standard pollutants to generate an initial pollution scene; n independent purification tests are executed based on the initial pollution scene, and the purification tests comprise the steps that air purification equipment is controlled to operate, and air samples are synchronously collected at a plurality of preset time nodes through a sampling array to obtain N sets of original pollutant concentration data sets; carrying out standardization processing on the pollutant concentration data set to obtain a pollutant relative concentration data set; and calculating a dispersion statistical value based on the pollutant relative concentration data set to generate a stability quantitative index, and evaluating the air purification effect according to the stability quantitative index. Quantitative, comprehensive and accurate evaluation of the air purification effect on spatial uniformity, time repeatability and overall stability is achieved.

The invention relates to the technical field of air detection, and particularly discloses a method for measuring formaldehyde content in indoor air, which is used for measuring indoor formaldehyde gas by potentiometric titration and comprises the following steps: firstly, preparing a K2Cr2O7 standard solution, a Fe < 2 + > standard solution and a formaldehyde standard solution; secondly, taking a K2Cr2O7 standard solution as an absorption liquid of formaldehyde gas, adding sulfuric acid and distilled water, heating in a water bath, transferring into a gas sampler, and sampling air to obtain a sample collection liquid; and placing the sample collection solution in a water bath kettle, continuously heating, titrating the excess K2Cr2O7 and formaldehyde blank sample by using an automatic potentiometric titrator by using a Fe < 2 + > standard solution as a titrating solution, and calculating the content of formaldehyde in the air. The method disclosed by the invention is simple to operate and accurate in determination, the reaction speed can be increased, the reaction degree can be improved, the lowest detection limit can reach 0.006 mg / m < 3 >, and the method can be used for determining the indoor formaldehyde content. The problems that in the prior art, operation is tedious, the duration time is long, and the detection limit is too high are solved.

The utility model relates to a kind of system of on-line monitoring VOCs and NOx, belong to gas monitoring equipment technical field, including air pump, gas path system, VOCs detection unit, NOx detection unit and workstation, air pump is connected with gas path system, gas path system is connected with the gas path in VOCs detection unit and NOx detection unit respectively, VOCs detection unit and NOx detection unit are electrically connected with workstation;Air pump accesses the gas in environment into gas path system, workstation controls VOCs detection unit and NOx detection unit to monitor the air sample in gas, the system simple structure, small portable, high integration can simultaneously accurately detect VOCs and NOx, reduce detection time and cost, improve efficiency.

The utility model relates to the technical field of knapsacks, in particular to a site environment monitoring multifunctional sampling knapsack which comprises a knapsack body, a protective cover is installed on the surface of the knapsack body through a zipper, straps are fixedly connected to the side, away from the protective cover, of the knapsack body, and a sampling device is arranged in the knapsack body and comprises a sampling pipe and an air pump. The sampling pipe is fixedly connected with the inner wall of the bag body, the air pump is located in the bag body, the output end of the air pump is fixedly connected with a communicating pipe, the input end of the air pump is fixedly connected with a guide pipe, one end of the guide pipe penetrates through the bag body, and the end, away from the air pump, of the guide pipe is fixedly connected with a suction head. According to the scheme, sample collection can be effectively carried out on a plurality of point positions on site, the one-way valves are matched with the spacers, air samples are effectively prevented from being polluted, the quality of the samples is ensured, meanwhile, sampling and extraction of the air samples are simplified, the working efficiency of a user is improved, and normal use of equipment is facilitated.

The utility model discloses a gas storage device for air detection, which relates to the technical field of air detection and comprises a storage tank, a plurality of storage cavities are formed in the storage tank, gas guide holes are formed in the storage tank and located at the tops of the storage cavities, and gas guide pipes are in threaded connection with the interiors of the gas guide holes. A plurality of air holes are formed in the outer wall of the air guide pipe. The gas storage device for air detection has the beneficial effects that the plurality of groups of storage cavities in the storage tank are matched with the rotation of the gas guide pipe which is in threaded connection, so that the vent holes and the sealing plate on the gas guide pipe can be driven to lift, the vent holes are controlled to be opened and closed, and air in the plurality of groups of storage cavities can be conveniently and manually pumped out under the action of the pumping cylinder; the negative pressure is formed, when the multiple storage cavities are opened, external air is automatically extracted, storage of different air samples is facilitated, limitation of electric power is avoided, and efficiency improvement is facilitated.

The application discloses a kind of ship engine room fire alarm device, it is related to ship fire alarm technical field, including smoke detection equipment and fire alarm mechanism, the fire alarm mechanism includes negative pressure equipment, fine filter, oil mist filter, sampling main pipe, adapter, sampling branch pipe and sampling box;Through the fire alarm mechanism of being set, negative pressure equipment, sampling main pipe, adapter, sampling branch pipe and sampling box are used in cooperation, so that negative pressure equipment is in real time to the inside of ship engine room is extracted gas in all directions, so that the air sample of fire alarm mechanism can forcibly capture each dead angle of engine room, not by the influence of engine room strong ventilation turbulent flow field, effectively solve the problem that low concentration smoke is blown away, dilution at the initial stage of fire, passive probe cannot be reached, realize the rapid capture of smoke, gain sufficient time for fire disposal, avoid fire spread, improve the use effect of fire alarm device, effectively protect ship engine room and personnel.

An air sampling pump is disclosed, including a housing to contain a pump, a battery, and a switch. The switch controls a regulator to control the speed of the pump. A coupler is positioned on an exterior surface of the housing. The coupler releasably connects a hose to the housing, wherein the hose is in fluid communication with the pump to enable the pump to draw air through at least one cassette positioned at an opening at an end of the hose. The cassette collects an air sample to enable the analysis of the air sample for which can be used to measure air contaminants such as asbestos, lead, and mold.

The invention relates to the technical field of air detection, and discloses air pollution detection equipment and method.The air pollution detection equipment comprises a handheld detector, a sample storage mechanism is rotationally arranged in the side wall of the handheld detector, and an air detection probe is fixedly arranged at the top of the handheld detector; the sample storage mechanism comprises a capsule storage seat, a plurality of capsule storage holes are formed in the capsule storage seat in an array mode, capsule pressing pieces are fixedly arranged on the inner walls of the capsule storage holes, a gas storage capsule is inserted into each capsule storage hole, and the capsule pressing pieces and the outer walls of the gas storage capsules are tightly attached to the elastic structure; by arranging the sample storage mechanism, particularly matching of the capsule storage hole, the capsule pressing piece and the air storage capsule and direct communication of the after-test flow control assembly, a detected air sample can be directly injected into the air storage capsule emptied in advance for sealed storage, and secondary transfer and external pollution of the sample are avoided in the process; the primitiveness and representativeness of the stored sample are ensured, and reliable physical evidence is provided for subsequent rechecking and traceability.