35results about How to "Reduced sampling time" patented technology

The invention relates to the technical field of dialysis detection, and particularly discloses a blood purification center dialysis water detection device which comprises a charging bin, an automatic sampling mechanism, a control operation table, detection equipment, a ground rail moving platform and a carrying mechanical arm. The automatic sampling mechanism can be stored in the charging bin, a height adjusting part and an automatic operation part are arranged in the automatic sampling mechanism, the height adjusting part can adjust the position and the height to enable the height adjusting part to be matched with the position of a detection valve of external filtering equipment, and the automatic operation part can execute operation to replace manual sampling operation. An automatic device is adopted to replace manual operation of medical staff to perform water quality detection sampling operation on the filter for hemodialysis, so that the overall detection efficiency is greatly improved, dangerous operation is remotely completed under the condition of no human intervention, the safety and health of the staff are effectively guaranteed, and the working efficiency is improved. And inaccurate detection or influence on normal operation of the whole dialysis water system caused by equipment failure is avoided.

One or more embodiments of the present specification provide a color lookup table generation method and a color correction method, which divides the color range into multiple color intervals, and partitions each color interval to calculate the linearity, and adaptively adjusts the sampling step size of each color interval based on the linearity, effectively balancing the contradiction between too many sampling points being time-consuming and too few sampling points being insufficiently accurate, and adaptively allocating the sampling point distribution of each color interval, so that the sampling points are more sparse in areas with higher linearity, saving sampling time and improving algorithm efficiency, while the sampling points are denser in areas with lower linearity, reducing the interpolation error in the color correction process and improving the color correction accuracy.

The multifunctional sampling device comprises a sampling barrel, an auxiliary barrel with the same diameter as the sampling barrel is arranged at the upper end of the sampling barrel, a driving unit and a fixing unit are sequentially arranged in the auxiliary barrel from bottom to top, and a collecting unit is mounted on the inner wall of the sampling barrel; the problems that in the rock-soil sampling process in the prior art, rock-soil at different diameters of a hole cannot be sampled, rock-soil on the surface layer of the inner wall of the hole cannot be removed, samples at different positions of the hole cannot be collected at a time, the sampling time is prolonged, the sampling efficiency is reduced, and the sampling time is shortened can be solved. The cost is increased; the angles of the limiting blocks with different heights are adjusted through the limiting rod, sampling of rock and soil samples with different depths and diameters is achieved, the sampling frequency of the same hole is reduced, the sampling requirements of different rock and soil samples are met, the multifunctionality and flexibility of the device are improved, the sampling time is shortened, and the sampling cost is reduced.

The invention discloses a sampling device for a flue gas system of a thermal power generating set, and relates to the field of environmental science and engineering technology. The sampling device for a flue gas system of a thermal power generating set comprises an inspection instrument, a connecting pipe is fixedly connected to the surface of the inspection instrument, a probe frame is clamped at one end of the connecting pipe, a ventilation channel is provided inside the probe frame, an adjusting mechanism for adjusting a detection position of the probe is provided inside the probe frame, a cleaning mechanism for cleaning a filter screen of the probe is provided inside the probe frame, a blocking mechanism for preventing liquid inside the probe from entering the inspection instrument is provided inside the probe frame, and by adjusting the length of the adjusting pipe inside the flue, it is ensured that the gas collected by the sampling device is at a position where the flue gas flows evenly, thereby solving the problem of inaccurate sampling inspection results of the flue side wall, the flue gas flow at the center of the flue is relatively even, and the sampling probe is located close to the center of the flue, thereby improving the representativeness of the sampling.

The invention discloses an annular sampling method for titanium ingot GDMS detection, and belongs to the technical field of titanium ingot GDMS detection sampling. An annular sampling method for titanium ingot GDMS detection comprises the following steps that firstly, a detected titanium ingot is fixed, and surface treatment is conducted on the outer portion of the detected titanium ingot; step 2, determining a turning area: in the turning area 1, feeding leftwards from a position 1 at the speed of 3mm / min, meanwhile, feeding inwards at the speed of 0.025 mm / r, moving to a position 2 after feeding inwards by 2mm, stopping feeding inwards, and horizontally turning leftwards; the titanium ingot can be sampled in an annular sampling mode, the titanium ingot can be sampled in four positions, annular turning is carried out at the four sampling positions, the damage influence of the sampling on the titanium ingot is small, the sampling duration is 15 hours (including titanium ingot clamping), the sampling loss is 10 kg, sampling can be carried out at the 1 / 5 position, the 2 / 5 position, the 3 / 5 position and the 4 / 5 position of the titanium ingot, the representativeness is high, and the sampling accuracy is high. Therefore, the sampling loss of the titanium ingot can be reduced, the sampling time is shortened, and a representative sampling position can be selected.

The application discloses an in-situ sampling device for analyzing pollutants in aquatic animals, and relates to the technical field of biological sampling, and specifically comprises: a sampling platform for placing aquatic animals to be sampled; a support frame arranged on one side of the sampling platform; a collecting module arranged on the support frame through a first adjusting cross rod; a sampler arranged on the support frame through a second adjusting cross rod; and a clamping device arranged on the sampling platform. The sampler is driven to rotate on the sampling platform through the second adjusting cross rod, so that the sampler is moved above the clamping device. The sampler is rotated and pressed to perform ring cutting sampling on the aquatic animals clamped on the clamping device, and the tissue sample cut in the sampler is pushed into a collecting bottle through a pushing mode. The application effectively solves the shortcomings of traditional dissection sampling, meets the selection of different tissue depths and different sampling amounts of aquatic animals, realizes fast, accurate and pollution-free sampling, and provides reliable support for the analysis of pollutants in aquatic animals.

The utility model discloses an environmental sewage sampler for environmental engineering, and relates to the technical field of sewage sampler design, the environmental sewage sampler comprises a sampling main body, a sampling screen position adjusting unit and a sewage sampling unit, the lower side of the sampling main body is provided with four moving wheels, and four corners of the sampling main body are respectively provided with a screw hole; the interior of each screw hole is in threaded connection with a thread on a corresponding fixed plug pin, each fixed plug pin penetrates through the screw hole, a sampling screen position adjusting unit is arranged on the upper side surface of the sampling main body, and the sewage sampling unit comprises a connecting circular plate, a sewage sampling bottle, a filter screen hole, a sealing circular ring, a connecting push block and an electric push rod. One end of a connecting chain in the sampling screen position adjusting unit is fixedly connected with a connecting circular plate, so that sewage at different depths can be sampled, impurities are prevented from entering the sampler during sampling, the sampling precision is improved, and the sampling time is shortened.

The utility model discloses a water reducing agent reation kettle convenient to sample and detect, including shell, the one side of shell top is provided with feed pipe, the top of feed pipe is provided with the top cover of screw thread, the bottom of shell is provided with the discharge pipe, this water reducing agent reation kettle convenient to sample and detect, and the corresponding design of first through -hole and second through -hole is passed to layered sampling mechanism, and the up and down movement of cooperation baffle can be accurate to obtain the reaction liquid of different depth in shell, compared with traditional sampling mode, need not to suspend the reaction or open the kettle body, avoided the problem that the impurity mixes and the reaction environment is destroyed, can truly reflect the component state of each level reaction liquid, provides accurate basis for the component control in water reducing agent production process, effectively guarantees that final product quality meets the standard, simultaneously, the cooperation of multiple discharge pipes and material receiving barrels can realize the simultaneous collection of multiple groups of samples, greatly shorten the sampling time, improve the detection efficiency, satisfy the demand of continuous production.

The invention discloses a sampling method and a sampling device, belongs to the technical field of liquid detection equipment, and is used for improving liquid absorption accuracy and liquid absorption efficiency. According to the main technical scheme, the sampling method comprises the following steps: S101, transferring a sampling bottle to a liquid taking station; s201, the sampling bottle is driven to move downwards by a first stroke, so that the sampling needle is inserted into the sampling bottle; s301, the sampling bottle is driven again to move downwards by a second stroke, so that the sampling bottle is compressed; s401, driving the sampling bottle to move upwards by a second stroke so as to stretch the sampling bottle; s501, the liquid level of the sampling bottle is observed, whether the liquid level reaches the preset height or not is judged, when the liquid level is lower than the preset height, the step S301 and the step S401 are executed repeatedly, and if the liquid level is higher than the preset height, the sampling bottle is driven again to move upwards by the first stroke; s601, the sampling bottle is transferred to a transmission station; and S701, conveying the sampling bottle to a designated position.

The utility model discloses a railway field section tunnel soil sampling device belongs to sampling device field, including the sampling pipe, the bottom clamping of sampling pipe has sealing mechanism, the top fixedly connected with sampling mechanism of sampling pipe inner side wall, the sealing mechanism includes snap ring, the outer surface of snap ring is through the outer surface of sealing ring clamping in the sampling pipe bottom, the upper surface fixedly connected with sealing sleeve of snap ring, the upper surface fixedly connected with A magic paste of sealing sleeve, the upper surface of A magic paste is pasted with B magic paste, through the cooperation of above each device, through the sealing mechanism of setting, the sealing mechanism is placed in the sampling pipe when soil sampling, and sealing mechanism can effectively prevent the pollution of soil, for the soil sample that needs to keep specific humidity condition, sealing can effectively avoid the infiltration of moisture loss or external moisture, maintains the original physical and chemical properties of sample.

The utility model relates to the technical field of coal sampling, and particularly discloses a coal pile stratified sampling device which comprises an outer cylinder mechanism, a sampling mechanism assembled in the outer cylinder mechanism, and a material shifting mechanism assembled in the sampling mechanism, the outer barrel mechanism comprises an inserting barrel, and a feeding opening is formed in one side of the inserting barrel; the sampling mechanism comprises a sampling cylinder rotationally mounted in the insertion cylinder, a material storage cavity is formed in the sampling cylinder, and a sampling opening corresponding to the feeding opening is formed in one side of the material storage cavity; the material stirring mechanism comprises a drawing rod slidably mounted in the material storage cavity, a fixed pile is fixedly mounted on one side of the drawing rod, and a material stirring blade corresponding to the sampling port is slidably mounted on one side of the fixed pile; according to the coal pile sampling device, coal at different layers in a coal pile can be sampled at the same time at a time, so that the sampling time is effectively saved, the sampling efficiency is improved, and more convenience is brought to the sampling work.

The invention relates to a multi-point calibration method and device based on an ultra wide band, electronic equipment and a storage medium. The multi-point calibration method based on the ultra wide band comprises the following steps: creating a communication tag; a steering engine is driven to rotate, and signals sent by a plurality of UWB nodes are collected through a communication tag; and performing calculation processing on the signals sent by the plurality of UWB nodes, and outputting a plurality of arrival angle compensation tables. According to the scheme provided by the invention, the rotation angle of the receiver and the sampling time can be reduced, high-precision calibration of each module can be ensured, and the calibration efficiency can be greatly improved.

A multi-modal image registration method includes obtaining a plurality of first points corresponding to a central vertex of a correction body and a plurality of second point groups corresponding to a plurality of side vertices from a plurality of two-dimensional images, obtaining a plurality of third points corresponding to the central vertex from a plurality of three-dimensional images, performing a first optimization operation using a first coordinate system associated with the two-dimensional images, the plurality of first points, and the plurality of third points to obtain a first conversion matrix, processing the plurality of three-dimensional images using the first conversion matrix to generate a plurality of first converted images, respectively, performing a second optimization operation using the plurality of first converted images, the plurality of first points, and the plurality of second point groups to obtain a second conversion matrix, and converting a to-be-processed image from a second coordinate system associated with the three-dimensional images to the first coordinate system using the first conversion matrix and the second conversion matrix.

The utility model belongs to the technical field of light stabilizer detection and sampling, and particularly relates to a light stabilizer detection and sampling tool which comprises a portable component, a sampling component is mounted in the portable component, and a protection component is arranged on the side of the sampling component; the sampling assembly comprises a sampling bottle, the top of the sampling bottle is in threaded connection with a cover, the top of the cover is fixedly connected with an air pipe, the top of the air pipe is fixedly connected with a micro air pump, the side of the air pipe is provided with a threaded fixing clamp, and the side of the threaded fixing clamp is in threaded connection with a nut. A connecting pipe is connected to the interior of the threaded fixing clip in a clamping manner, and a sampling pipe is fixedly connected to the top of the connecting pipe; the problem of cross contamination caused by difficulty in cleaning can be effectively avoided, a communication structure formed by the sampling tube, the connecting tube and the sampling bottle is reasonable in design, so that a sample can smoothly enter the sampling bottle in the extraction process, the risk of sample residue and blockage is reduced, and the sampling accuracy is further ensured.

The utility model discloses a portable underground mine gas sampler belongs to gas collection technical field, including handle, handle one side fixedly connected with protection subassembly, and the inside fixedly connected with collection mechanism of protection subassembly, it through collection mechanism cooperation leak protection subassembly and pneumatic control subassembly, can realize single -pass time -sharing sampling or multichannel simultaneous sampling, can complete the gas collection operation of different point, convenient operation, greatly shorten the sampling time, improve sampling efficiency, can prevent the gas that collected simultaneously effectively leaks or outside gas mixes, guarantee the purity and concentration accuracy of sample, through setting handle, make the sampler convenient to be carried and remove, alleviate the labor intensity, through the protection shell cooperation dust screen, can effectively resist the collision, extrusion under the well, can effectively block dust into the equipment inside, protect internal component safety, prolong the service life of equipment, ensure that equipment can stable operation in the well bad environment.

This utility model relates to a sampling device for raw and auxiliary materials in steelmaking, belonging to the field of raw and auxiliary material sampling technology. The technical solution is as follows: the bearing frame (2) is fixed on the support base (1), the rotary motor (3) is driven and connected to the drive gear disk (4), the drive gear disk (4) meshes with the driven gear disk (5), the driven gear disk (5) is fixed on the driven vertical shaft (6), the driven vertical shaft (6) is rotatably connected to the bearing frame (2), one end of the crossbeam (8) is fixed on the driven vertical shaft (6), the guide rail rack (9) is fixed on the crossbeam (8), the oil cylinder (7) is vertical, the drive gear (10) is installed on the cylinder body of the oil cylinder (7), the drive gear (10) meshes with the guide rail rack (9), and the sampler (13) is fixed on the cylinder rod of the oil cylinder (7). This utility model greatly reduces the difficulty of sampling the entire vehicle of raw and auxiliary materials, shortens the sampling time, ensures accurate sampling position, and eliminates human sampling interference factors.

The utility model relates to the technical field of sealing ring production sampling, in particular to a sealing ring production line sampling mechanism which can be used for more conveniently sampling sealing rings, greatly reducing the sampling time, relieving the labor intensity of workers and avoiding fatigue of the workers. Comprising a production line conveying frame, two sets of vertical plates and a collecting box, a production line conveying belt with a motor as driving force is installed on the production line conveying frame, the two sets of vertical plates are symmetrically and fixedly connected to the rear end of the production line conveying frame, a pushing motor is fixedly installed on the right set of vertical plates, and a transmission crankshaft is rotatably installed on the two sets of vertical plates; a supporting plate is fixedly connected to the middle of the top end of the rear side of the production line conveying frame, a guide hole is formed in the supporting plate, a guide rod is slidably installed on the supporting plate through matching of the guide hole, the rear end of the guide rod is rotationally connected with the end, away from the transmission crankshaft, of the transmission rod, and a material pushing plate is fixedly connected to the front end of the guide rod.

The invention discloses a rapid sampling method and system, and relates to the technical field of water quality detection, and the method comprises the following steps: determining a to-be-detected area, and obtaining sampling points in the to-be-detected area; based on the to-be-inspected area and the sampling points in the to-be-inspected area, planning an optimal flight route of the unmanned aerial vehicle; the unmanned aerial vehicle flies to the position above the sampling points according to the optimal flight route, the carried sampling box is put into water, and water samples at different depths are collected; the sampling box is moved upwards to the unmanned aerial vehicle support, the unmanned aerial vehicle is controlled to return, water samples at different depths are placed into different sampling test tubes, and water source sampling is completed. Water samples at different depths can be obtained through one-time sampling operation, the sampling time is shortened, the sampling efficiency is improved, the diversity of collected samples is increased, the limitation of manual sampling is avoided, and the accuracy of later water quality detection can be further ensured.

The utility model relates to the technical field of concrete measurement, in particular to a self-compacting shrinkage-compensating concrete strength detection device which comprises a columnar box body used for pouring self-compacting shrinkage-compensating concrete, a supporting frame plate and a base, and the columnar box body comprises a surrounding plate, an arc-shaped regulation and control plate and an elastic assembly. Transversely-penetrating cavity structures are arranged on the side faces of the surrounding plates, arc-shaped adjusting and controlling plates are inserted into the two ends of each cavity structure, the two arc-shaped adjusting and controlling plates in any one surrounding plate are connected through an elastic assembly, a cross-shaped sliding groove is formed in the base, the bottoms of the supporting frame plates are slidably connected with the cross-shaped sliding groove, and the number of the supporting frame plates corresponds to the number of the surrounding plates. The columnar box body is movably placed on the base, and the supporting frame plate is arranged around the columnar box body. According to the utility model, the strength development of concrete can be reflected more truly, and the accuracy and reliability of a detection result are improved; in addition, the difficulty and complexity of taking out the sample are reduced, the sampling time is shortened, and the construction efficiency is improved.

This utility model relates to the technical field of cement testing equipment, specifically disclosing a cement sampling sieving device, including a support platform with an inclined groove on the support platform. A sieving component slides within the groove, and a tension component is fixedly connected to one end of the groove. The tension component is fixedly connected to the sieving component. The sieving component is used for automatically sieving cement samples. The tension component is used to measure the cement sample residue in the sieving component through elastic deformation, and stops sampling after reaching a preset sampling amount. This utility model measures the total mass of the cement sample and calculates the sampling mass by the elastic deformation of a spring, thereby automatically terminating sampling according to the preset sampling amount. It uses mechanical shaking sieving to replace manual sieving, thus improving the efficiency and accuracy of sampling sieving.

The invention discloses a brain tissue positioning method based on facial point cloud registration. The problems that in the prior art, operation is complex, treatment time is long, a patient needs to keep the head still for a long time, and diagnosis and treatment efficiency is low are mainly solved. According to the implementation scheme, brain tissue data B of a patient is obtained through nuclear magnetic resonance imaging, and a head contour point cloud M of the patient is obtained from B; capturing a patient face RGB image and a depth point cloud by using an RGB-D camera, segmenting the point cloud by using key points of the patient face RGB image, and generating a patient face point cloud D under an RGB-D camera coordinate system; the head contour point cloud M and the face point cloud D of the patient are registered, a rotation matrix and a translation vector between the two point clouds are obtained through registration, the brain tissue data B of the patient under the MRI coordinate system are converted to be under the RGB-D camera coordinate system, and brain tissue positioning is achieved. Sampling time can be shortened, time for keeping the head of a patient stationary is shortened, operation of a doctor is simplified, overall diagnosis and treatment efficiency is improved, and the method can be used for assisting the doctor in diagnosis and treatment of brain tissue.

The utility model relates to the technical field of soil sampling, in particular to a soil sampler for mineral exploration. The utility model provides a soil sampler for mineral exploration, which can be used for sampling soil, is simple to operate, saves manpower and soil sampling time, and improves the soil sampling efficiency. A soil sampler for mineral exploration comprises a moving plate, a supporting frame, an electric push rod, a fixing frame, a sliding block and the like, the supporting frame is connected to the upper side of the middle of the moving plate, the electric push rod is connected to the upper portion of the supporting frame, the fixing frame is connected to the telescopic end of the electric push rod, and the sliding block is connected to the lower portion of the fixing frame. The electric push rod drives the fixing frame to move downwards, so that the sliding block moves downwards along the supporting frame, then the motor, the rotating rod and the drill bit are driven to move downwards, the soil taking and rotating frame moves downwards, soil is sampled, operation is easy, manpower and soil sampling time are saved, and soil sampling efficiency is improved.

The utility model provides a drainage bottle and a chest drainage system comprising the same. The drainage bottle comprises a sampling opening, and the sampling opening is located in the lower surface of a bottle body of the drainage bottle and communicated with a drainage bottle cavity of the drainage bottle. Therefore, a medical worker can conveniently and directly extract drainage liquid from the drainage bottle cavity of the drainage bottle through the sampling opening, enough drainage liquid samples can be obtained in several seconds, and the drainage liquid sampling time is greatly shortened. Due to the fact that the sampling opening is formed in the bottom of the drainage bottle, even in the early stage of drainage operation and under the condition that the total amount of drainage liquid is extremely small, samples can be collected, and medical staff can conveniently evaluate the treatment process and the treatment effect of a patient in time.

The present invention discloses a hollow sampling drilling device, comprising a sampling outer shell, a sampling inner cylinder, a drill bit and a drill rod, wherein the sampling inner cylinder is fixed in the sampling outer shell, so that a sampling outer cavity is formed between the sampling inner cylinder and the sampling outer shell, and the interior of the sampling inner cylinder is the sampling inner cavity; four support plates are fixed at the lower end of the sampling inner cylinder, and the four support plates are in the same horizontal plane and arranged in a cross shape; a movable baffle is provided on the upper part of the four support plates, and one side of the movable baffle is hinged to the inner wall of the sampling inner cylinder through a hinge; the drill rod is a hollow rod with openings at both ends, and a spiral sheet is provided inside thereof, and the lower end of the drill rod is connected to the upper end of the sampling inner cylinder through a thread; an annular retaining ring is provided at the lower part of the thread of the sampling inner cylinder, and the circumference of the annular retaining ring is fixedly connected to the inner wall of the sampling inner cylinder. The present invention can complete the sampling process of coal and rock samples while drilling, thereby not only reducing the damage to the soil body, but also effectively shortening the sampling time.

The polyester resin sampling device comprises an operation box, supporting legs and a motor, a stirring inner cavity is formed in the operation box, the motor is installed at the top of the operation box, a rotating shaft is fixedly installed at the output end of the motor and extends into the stirring inner cavity, a connecting block is installed at the end, away from the motor, of the rotating shaft, and the connecting block is connected with the stirring inner cavity. A connecting block is fixedly mounted on the bottom surface of the stirring inner cavity, stirring blades are mounted on the surface of a rotating shaft, a sampling pipe is movably mounted at one end of the top of the operation box, and a sampling ball is arranged at the top of the sampling pipe. Therefore, the sample is more uniform, the precipitation or layering phenomenon is avoided, the sampling accuracy is ensured, and the stirring blades can accelerate the stirring speed of the sample and shorten the sampling time, so that the operation efficiency is improved, and the manpower and time cost can be saved.

This application relates to a magnetic resonance imaging method, apparatus, and computer device. The method includes determining a preset acceleration factor; based on the preset acceleration factor, determining target K-space filling regions corresponding to multiple phases of the object to be detected; filling the target K-space filling regions with magnetic resonance data acquired from the object in each phase to obtain multiple sets of K-space data; for each phase, determining synthetic K-space data using the K-space data corresponding to the phase and the data of the undersampled filling regions in the K-space data of other phases; reconstructing the synthetic K-space data to generate a magnetic resonance image of the object. The magnetic resonance imaging method of this application can improve the quality of magnetic resonance images.

The application provides a single-pixel imaging multi-target positioning method based on multi-direction projection optimization, and relates to the field of moving target positioning and tracking, which comprises the following steps: based on prior position information of multiple targets, a Hough transform is used to extract a candidate projection angle set of collinear targets, and clustering analysis is performed on multiple candidate projection angles to obtain a key projection angle set; by using the key projection angle set, a Fourier central slice theorem is used to obtain one-dimensional projection curves corresponding to each key projection angle in the corresponding direction in the target scene; according to the one-dimensional projection curves, projection strips of the targets in the corresponding direction are extracted, combined strips are generated through spatial mapping and splicing, and an image containing a target region is obtained; after morphological filtering processing is performed on the image, position estimation is performed by using a centroid coordinate, and the position positioning of multiple targets is obtained. The application can effectively reduce the projection angle, reduce the measurement times and improve the positioning efficiency under the premise of ensuring the positioning accuracy.

The invention relates to the technical field of marine organism sampling, in particular to a minimally invasive accurate sampling method for sea cucumber coelomic fluid. The method comprises the following steps: scanning a sea cucumber body cavity by using an ultrasonic detector, and selecting a position which is thin in back midline body wall and avoids viscera as a sampling part; an injector provided with a special double-layer sleeve type sampling needle is selected, obliquely and slowly pierces into the body wall by 3-6 mm at an angle of 45 degrees and stretches into the body cavity, and the body cavity fluid of the sea cucumber is slowly sucked. In the sampling process, the exposure time of the sea cucumbers is controlled within 1 minute, so that the stimulation to the sea cucumbers is reduced. The minimally invasive accurate sampling method provided by the invention is simple and convenient to operate, rapid and accurate collection of the sea cucumber coelomic fluid can be realized, and the problem of sample pollution caused by contact of the coelomic fluid with dissecting tools and vessels in the sampling process can be effectively prevented. In addition, the wound caused by the method is tiny, the damage to the sea cucumbers is small, the sea cucumbers can recover quickly after sampling, and the rare sea cucumber resources can be effectively protected while scientific research is developed.

The invention discloses a gaseous nitrous acid sampler for high-frequency isotope analysis and a working method, and relates to the technical field of analysis and measurement devices.The sampler comprises a left double-channel sampling pipe and a right double-channel sampling pipe which are the same in structure, and the left double-channel sampling pipe comprises a first channel and a second channel which are arranged from bottom to top; a gas inlet is formed in the bottom of the first channel, a gas outlet is formed in the top of the second channel, coating rings are arranged in the first channel and the second channel respectively, and the upper portion of the first channel and the upper portion of the second channel are connected with a corresponding flushing fluid tank, a corresponding coating fluid tank and a corresponding nitrogen cylinder respectively. The lower parts of the first channel and the second channel are connected with corresponding waste liquid bottles and collecting trays; the requirement for efficient and accurate collection of the atmospheric HONO sample can be met, meanwhile, it is ensured that the concentration of the sample is enough so that high-precision isotope analysis can be carried out, and therefore more powerful technical support is provided for analysis of the source and generation mechanism of HONO and atmospheric chemical behaviors of HONO.

This utility model relates to a fine-particle mineral powder sampling device, belonging to the field of mineral powder sampling technology. The utility model includes a sampling probe, a connector, a sample lifting rod, and an electric drill. The sampling probe has a hollow tubular structure, with a connecting plate A at its top and a discharge pipe at its upper part. A cleaning pipe is provided between the connecting plate A and the discharge pipe, and the cleaning pipe communicates with the inner cavity of the sampling probe. The connector is connected to the connecting plate A. The sample lifting rod is inserted into the sampling probe, with its upper end protruding from the connector. The top of the sample lifting rod is detachably connected to the electric drill. This utility model effectively reduces sampling difficulty, is easy to clean, reduces the risk of sample contamination, and is flexible and easy to move, making it more suitable for sampling operations in mining areas.