143 results about "Air sample" patented technology

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.

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.

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.

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.

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.

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 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.

The utility model discloses a fire early warning system, including very early stage smoke detection device, multi sensor integrated device, infrared thermal imaging high definition camera and electric control device, very early stage smoke detection device includes air -suction type smoke detector and air sampling pipe network, air -suction type smoke detector built -in laser scattering detection unit, and through the air pump from air sampling pipe network continuous collection air sample, and air sampling pipe network is annular and is arranged on the top of energy storage container, multi sensor integrated device is installed in the battery pack inside, infrared thermal imaging high definition camera is used for identifying battery module surface temperature gradient anomaly, electric control device respectively with very early stage smoke detection device, multi sensor integrated device, infrared thermal imaging high definition camera electric connection, and with the backstage network connection, is used for according to multi sensor data fusion to establish the hierarchical early warning mechanism and sends to the backstage. The utility model technical scheme can promote the timeliness and accuracy of fire prevention and control.

A breathing air laboratory on location gas sample test and data collecting system and method, at a remote breathing air provider's facility, that includes an air compressor, for remotely testing, collecting, and monitoring the quality and purity of the breathing air being produced at the provider's facility, that allows an accredited independent monitoring, testing, and analyzing facility to provide breathing air validation and certification to a cloud-based air quality test and analysis account belonging to the breathing air provider facility at any time. The system includes redundant gas sample air sensors for O2 and CO to ensure quality and accuracy in the breathing air test and data collection, and analysis and a “canary” gas sample test module securely mounted in a laboratory chassis, but manually swappable, to ensure credibility and accuracy of the sensors being used to test gas / air samples.

Disclosed herein are compositions, devices, and methods for detecting analytes in an air sample taken from a subject. The compositions can comprise on an inanimate surface, such as a face mask worn by an individual, having a test substrate for capturing analytes.

There is provided a leak detection system for detecting breaches in sealed food containers. The leak detection system comprises air-sample testing equipment configured to test the composition of an air sample provided to the air-sample testing equipment. At least one pressing member is provided configured to, in use, apply pressure to the sealed food container located in an air-sampling region. At least one air-sampling port is located in the air-sampling region. An air sample conduit is provided extending between the at least one air-sampling port and the air-sample testing equipment. In use, the at least one air-sampling port takes an air sample from the air-sampling region at least during or after the at least one pressing member applies pressure to the sealed food container in the air-sampling region and communicates said air sample through the air sample conduit to the air-sample testing equipment.

An aspirating detection system for monitoring for the presence of a pathogen, the aspirating detection system including: a network of one or more pipes for sampling air from a plurality of locations monitored by the aspirating detection system; a sensor unit 3 comprising a housing 13 fluidly connected to the network of one or more pipes, and a biosensor 12 mounted within the housing, the biosensor being configured to monitor for the presence of the pathogen; and an aspirator 15 configured to draw airflow through the network of one or more pipes and through the biosensor 12.

The utility model provides a kind of air quality detection equipment for metal smelting environment evaluation, comprising: box;Driving assembly, the driving assembly includes drive motor, the drive motor is suspended in the box inside.The air quality detection equipment for metal smelting environment evaluation provided by the utility model is mutually matched by ventilation pipe, fan, first gas pipe, second gas pipe, shunt component, driving assembly and filter component etc. structure, when using, left and right sides ventilation hood alternate work, cooperate filter screen, both can continuously collect air sample to detect, and when ventilation hood switches working state, utilize airflow to carry out automatic cleaning to filter screen, avoid the problem that filter screen is jammed due to dust accumulation and influence ventilation volume and detection accuracy, improve the detection accuracy of detection equipment;And this automatic cleaning filter screen design reduces the working frequency that staff regularly cleans filter screen, reduces the labor intensity and maintenance cost of staff.

The invention discloses a carbon trapping and sampling system for measuring an atmospheric methane source according to a carbon isotope ratio. The system comprises a gas inlet module, an impurity removal module, a catalytic oxidation module, a methane derived carbon trapping module and a control module. The impurity removal module is connected to the rear end of the gas inlet module, the impurity removal module comprises a solid particulate matter removal assembly, a composite drying assembly, a CO removal assembly and a CO2 adsorption assembly, and the composite drying assembly adopts a replaceable composite drying agent and is provided with a visual window. The CO removal assembly is connected to the rear end of the composite drying assembly, and Hopcalite is adopted as a catalyst. After the catalytic oxidation module is connected to the impurity removal module, a tubular catalytic oxidation furnace is arranged, and a platinum catalyst is used for catalyzing methane oxidation. The system is simple in overall structure and convenient to operate, can be deployed and applied in various scenes, and can capture carbon in atmospheric methane at a sampling point without transporting a large number of air samples so as to measure the carbon isotope ratio.

The invention relates to the technical field of deep underground space environment monitoring, in particular to a deep underground space air microorganism multi-point synchronous sampling method which comprises the following steps: arranging a plurality of sampling points in a deep underground space, and configuring a sampling unit for each sampling point; establishing a multi-channel flow cooperative control system, and dynamically adjusting flow control parameters of each channel by adopting a multi-channel flow cooperative control strategy; establishing a high-precision clock synchronization system, and dynamically adjusting the clock offset according to the network delay jitter condition; all the sampling units simultaneously start air suction sampling in an air pressure balance state through air pressure balance compound control; after sampling is completed, the collected air samples are stored at constant temperature and constant humidity, and sampling data are transmitted to a ground control center. According to the method provided by the invention, efficient acquisition of multi-point microorganism sampling is realized, the problem of microbial community displacement caused by traditional negative pressure sampling is solved, and whole chain increase of'deployment-sampling-maintenance 'is realized.

The invention relates to the technical field of air sampling, in particular to an air microorganism enrichment operation control method and system based on sample analysis. The target microbial biomass after the operation can be accurately predicted through the constructed hybrid neural network model, the influence of the enrichment operation on the equipment state is analyzed according to the operation and the equipment operation condition, the equipment fault can be prevented in advance, and the matching analysis is performed on the enrichment operation mode by combining the biomass prediction result and the equipment state influence condition. According to the method, the optimal matching mode can be selected, the pertinence and effectiveness of enrichment operation can be improved, the use of equipment is optimized, and the enrichment efficiency of target microorganisms is greatly improved.

This invention discloses a method and system for graded detection of aspirating smoke fires based on wireless networking, comprising the following steps: deploying nodes within the target monitoring area and extracting air samples from monitoring sub-areas; performing baseline smoke concentration learning, short-term disturbance removal, and continuous response segmentation on the original sampling sequence; extracting segment features, constructing local smoke response vectors for nodes, and determining local response states; transmitting data and performing time-series alignment on the uploaded data to form a node collaborative response matrix; determining the causal relationship, direction, and intensity of response transmission between monitoring sub-areas, and constructing a smoke propagation chain; performing regional aggregation and fire grade determination to generate graded detection results for the target abnormal area; and transmitting data to the nodes and outputting regionalized fire alarm information. This invention, based on wireless networking and Granger causality analysis, achieves multi-node collaborative graded detection, possessing advantages such as high positioning accuracy and strong anti-interference capability.

The utility model relates to the technical field of environment detection, and discloses adjustable environment monitoring equipment which comprises a fixing rod, a sampling rod is slidably connected to an inner cavity of the fixing rod, a sampling mechanism is fixedly connected to one side of the sampling rod, and a positioning mechanism is fixedly connected to one side of the sampling mechanism. Through the arrangement of the sampling mechanism, the problem that a traditional air detection device cannot continuously collect air samples at different heights is solved, the practicability of the device is improved, due to the arrangement of the rotating disc and the fixed disc, when a worker switches another sampling hole, other sampling holes can be covered by the rotating disc, and the sampling efficiency is improved. The number of the sampling holes is four, the four sampling holes correspond to the independent air conveying pipe and the independent connecting pipe, cross contamination of air at different heights and influence on the final detection effect can be effectively avoided, and due to the arrangement of the rotating rod, a worker can control the sampling rod to drive the rotating disc to ascend by pushing the rotating rod.

The application discloses a kind of shipborne marine aerosol monitoring platform device and use method, platform device includes ship body, monitoring cavity is equipped on the deck of ship body, the outlet end of gas inlet pipe is vertically extended from the top end of monitoring cavity into monitoring cavity, laser diode is fixed in the right part of monitoring cavity, probe diode is fixed in the upper part of monitoring cavity and scattering mirror is fixed in the lower part, laser diode is used to emit laser to aerosol particle in air sample, scattering mirror is used to reflect the scattering light emitted by aerosol particle under the action of laser to probe diode, probe diode is used to receive scattering light and convert into electric pulse, and the number of aerosol particles in certain particle size section in air sample in monitoring cavity in certain time period is calculated.The application can obtain the number concentration of aerosol particles in open sea moving air source, and the spatial resolution of monitored aerosol particle number concentration is higher.

The invention discloses an air quality monitoring device which comprises multiple monitoring sensors and further comprises an unmanned aerial vehicle, and the multiple monitoring sensors are arranged on the unmanned aerial vehicle at intervals. The mounting bottom plate is mounted at the top of the unmanned aerial vehicle; the gas sampling pump is arranged on the mounting bottom plate; the multi-way reversing valve is mounted on the mounting bottom plate; the multiple directional control valve is communicated with the multiple collection tanks, and the collection tanks are arranged at intervals; and the supporting frame is arranged at the bottom of the unmanned aerial vehicle. The method is applied to an air quality monitoring process in a factory boundary area of a high-pollution factory building. The unmanned aerial vehicle inspects a plurality of detection points in sequence according to a pre-planned path, the unmanned aerial vehicle stops at each detection point for a period of time, in the stop time, the monitoring sensor monitors the air quality, and when the monitoring sensor displays that the air quality is abnormal, related workers are notified to perform air sampling; and subsequent traceability and repair work are facilitated. The acquisition cost and the maintenance cost of the monitoring device are low.