836results about How to "Improve sampling efficiency" patented technology

The invention discloses a carbon emission intensity inversion and traceability method and system based on numerical simulation and a reduced-order model. The method comprises the following steps: constructing a full-size three-dimensional map; numerical simulation of pollutant diffusion is carried out according to map information and known environment conditions; reducing the order of the analog data through an intrinsic orthogonal decomposition method; establishing a carbon emission simulation database under the multi-working-condition variable environment based on the reduced-order model; the carbon dioxide concentration and meteorological data are measured in real time and on site, a simulation database is used as a supplement, and the intensity of a known emission source and the intensity and position of an unknown emission source are calculated by adopting a source item estimation method, a particle swarm algorithm and the like. According to the invention, full-size reduction of a limited area and high-precision small-scale carbon emission monitoring can be realized, and effective emission source tracing, intensity analysis, potential emission source prediction and the like can be carried out according to a small amount of field actual measurement data.

The invention relates to the technical field of sampling, in particular to a portable sampling device for geological mineral exploration and a sampling method thereof.The portable sampling device comprises a bottom plate, guide frames, a lifting plate and the like, the two guide frames are connected to the top of the bottom plate, and the lifting plate is jointly connected to the two guide frames in a sliding mode. A rock core drill bit can be driven to move downwards through a screw rod motor, the rock core drill bit drills into soil, the soil enters a sampling pipe for sampling, a standby sampling pipe can be driven to move backwards through an electric guide rail, the standby sampling pipe is moved to the position below a mounting pipe, and the sampling pipe is spliced; the sampling pipe can be driven to move forwards through the electric guide rail, the sampling pipe can be disassembled, the sampling pipe can be automatically spliced and disassembled, operation is simpler, the burden of workers can be relieved, and therefore the sampling efficiency can be improved.

The invention belongs to the technical field of path planning, and particularly relates to a robot path planning method based on an RRT improved algorithm, and the method comprises the steps: obtaining environment space information needing path planning, defining parameters, and obtaining the minimum distance between a coordinate point and an obstacle; a bidirectional random tree is constructed and initialized, and sampling points are obtained through a sampling function; finding a nearest neighbor point, selecting a new node, carrying out safety distance judgment, and if not, carrying out sampling again; generating a discretization path; setting a cost function during local node expansion; performing loop iteration to generate discrete point cost, taking a minimum cost value, searching an optimal node and inserting the optimal node into the current tree; an overall path Path after local optimization is obtained; and discretizing the whole Path, setting a cost function of nodes during global planning, selecting the node with the minimum cost for reconnection, and finally obtaining a smooth and effective optimal path. According to the method, the optimality and smoothness of the path are effectively improved.

The invention relates to a construction method of a cooperative combat decision-making agent for ground unmanned equipment, and aims to solve the problem of space dimension disaster of a complex cooperative combat task. The DRL solution space is effectively compressed, the exploration efficiency is improved, and meanwhile intelligent decision making of tasks with different granularities in the whole combat process is achieved; aiming at the problem of generating a'task layer 'combat command action strategy, a cooperative combat decision-making agent network model is constructed to realize the unified coordination control from the effective representation of complex state input to the combat action; by constructing a distributed training framework, the sampling and training efficiency is improved, and high-throughput asynchronous parallel training of a cooperative combat decision-making agent network model is realized; by establishing a combat decision agent learning algorithm based on deep reinforcement learning and solving the combat decision agent learning algorithm, the learning efficiency and final performance of an agent network model are effectively improved.

The invention discloses a soil sampling device for environmental remediation, belongs to the technical field of environmental remediation, and aims to solve the problems that a spiral blade can destroy the in-situ structure and hierarchy of soil and influence the accuracy of a result, and broken stones on the surface layer of the soil can damage a spiral conveying blade. The soil sampling device comprises a shell, a handle is fixedly connected to the side wall of the shell, a first motor is fixedly connected to the top end in the shell, a threaded rod is rotatably arranged on the shell, one end of the threaded rod penetrates into the shell and is fixedly connected with the output end of the first motor, and a support sleeves the outer side of the threaded rod. According to the soil sampling device, gravel on the surface layer of soil can be cleaned, abrasion of the gravel to a drill bit is avoided, the service life of the sampling device is prolonged, meanwhile, soil of various depths can be sampled, the sampling amount of soil samples is ensured, and follow-up workers can conveniently and accurately detect specific components of the soil.

The invention discloses a hypersonic flight vehicle adaptive attitude control method based on near-end strategy optimization, and belongs to the technical field of hypersonic flight vehicle control, and the method comprises the steps: building an air-breathing hypersonic flight vehicle longitudinal dynamic model considering power; performing reinforcement learning training on the obtained environment model by using a PPO algorithm to obtain an optimized control strategy; selecting a proper state representation and action space, and designing a strategy network and a value network for the processed model, so that an original complex attitude control problem is converted into a reinforcement learning problem which can be effectively learned; and training the reinforcement learning model by using an improved PPO algorithm to obtain a final control instruction. According to the method, the model is trained by using the PPO algorithm, so that the defects of complex controller design, strict requirement on model precision and the like of a traditional control method can be effectively overcome. A simulation experiment verifies that pitch angle tracking can be effectively realized, and the stability of an execution mechanism is guaranteed.

The invention relates to the technical field of constructional engineering sampling, in particular to a constructional engineering sampling device which comprises a drilling and sampling mechanism, the drilling and sampling mechanism comprises a sampling barrel used for drilling and sampling and a drilling head used for drilling and sampling, and a mounting head is detachably arranged at the top of the sampling barrel in a threaded mode; the top end of the mounting head is rotationally connected with a lifting plate, the top end of the lifting plate is fixedly connected with a motor used for driving the mounting head to rotate, and the top end of the lifting plate is fixedly connected with an electric hydraulic telescopic rod. The soil hardness is monitored in real time through the hardness detection assembly, when the soil is hardened, the drilling head is extruded to promote the moving block to extrude hydraulic oil into the detection cavity, and the liquid level meter transmits a liquid level signal to the PLC; and when the soil becomes soft, the arc-shaped spring pushes the adjusting block to drive the conducting strip to slide on the resistance plate, and the changed current of the slide rheostat is detected by the PLC.

The invention relates to the technical field of microorganism sampling equipment, in particular to an ore-containing salt lake brine microorganism sampling device and method.The ore-containing salt lake brine microorganism sampling device comprises a balance weight floating platform, and through cooperation of a laser ranging mechanism, a PLC, a first electromagnetic valve, a second electromagnetic valve and an air pump, the sampling depth can be adjusted according to the actual sampling depth requirement; sampling distance parameters are flexibly set through the PLC according to actual sampling requirements, the winding mechanism is controlled to work through the PLC, the winding mechanism drives the sampling head to be lowered or pulled back, the distance between the sampling head and the bottom plate is detected through the laser ranging mechanism, and when the actual distance detected by the laser ranging mechanism reaches a set value, the sampling head is driven to move back and forth. The first electromagnetic valve and the second electromagnetic valve on the to-be-sampled barrel are started through the PLC, the air pump is started, a sample enters from the sampling head through an air pumping mode of the air pump, the operation is simple, the use is convenient and fast, and meanwhile, the sampling flexibility of samples with different depths is improved.

Belonging to the technical field of soil sampling, the invention relates to an efficient soil sample sampling mechanism, which comprises a walking trolley body for soil sample sampling, a sampling barrel and an electric lifting column fixedly mounted on the upper surface of the walking trolley body and used for driving the sampling barrel to lift. An upper mounting table and a lower mounting table which are distributed up and down are arranged outside the electric lifting column; a mechanism for driving the sampling barrel to rotate is arranged on the lower mounting table; a vibrating mechanism and a water conveying mechanism are arranged on the lower mounting table, and a first transmission structure and a second transmission structure which are used in linkage with the vibrating mechanism and the water conveying mechanism are mounted on an output shaft at the bottom of the double-shaft motor. According to the efficient sampling mechanism for the soil sample, the pushing block and a knocking mode are linked and matched for use, and then a spraying function is matched, so that the discharging of the sample can be improved, the inner wall of the sampling barrel can be flushed, the sampling efficiency is remarkably improved, the sampling time is shortened, the labor cost is reduced, and the efficient sampling mechanism has the advantages of high efficiency, convenience and high applicability.

The invention relates to an unmanned aerial vehicle cluster formation decision making and hunting method based on reinforcement learning, and belongs to the technical field of multi-agent formation control and decision making. The expected position corresponding to each agent and the control instruction of the dynamic model of the multi-agent are obtained, the central node does not need to quickly realize the expected formation configuration given by the decision-making system in a distributed mode, and the formation control problem of the multi-agent is solved; secondly, the formation of the multiple agents can be visually manipulated to adapt to dynamically changing tasks, and the formation manipulation problem of the multiple agents is solved; according to an actual confrontation task, learning and evolutionary online autonomous decision-making of the multi-agent system is realized, and the formation autonomous decision-making problem of the multi-agent system is solved; and finally, the interpretability and safety of learning decision are enhanced by utilizing a control model mechanism, and the interpretability and safety problems in the formation strategy learning process are considered.

The invention discloses an air-sea coupling data sampling method based on an asynchronous cross iteration random sampling strategy, and belongs to the technical field of marine meteorology. According to the invention, through an asynchronous cross iteration random sampling strategy, many defects in the existing air-sea coupling modeling method are overcome, and the method has significant advantages in the aspects of data sampling efficiency, model precision, computing resource utilization rate and the like. In order to improve the data sampling efficiency, a sliding time window and a random sampling mechanism are adopted, the hysteresis effect and randomness between atmosphere and ocean variables are simulated, and meanwhile, the sampling efficiency is remarkably improved by using an asynchronous cross iteration strategy. Through a multi-card asynchronous scheduling and non-blocking sampling mechanism, each computing node can complete a sampling task in parallel, and compared with a traditional serial sampling method, the sampling efficiency is improved by about 30%. The mechanism of dynamically adjusting the sampling weight concentrates resources to pay attention to a high-error area, redundant sampling of irrelevant or low-influence data is avoided, and waste of computing resources is further reduced.

The invention discloses an automatic sample weighing instrument. The automatic sample weighing instrument comprises a main body, a lofting module, a sampling module, a sample weighing module and a cleaning module, the lofting module and the sampling module are both movably arranged on the main body, and the sample weighing module and the cleaning module are both fixedly arranged on the main body; the lofting module is used for fixing and storing samples; the sampling module is used for extracting the sample stored in the sample placing module and transferring the sample to the sample weighing module, the sampling module comprises a vibration exciter and a sampling mechanism capable of being opened and closed, the vibration exciter is connected with the sampling mechanism, and the vibration exciter can vibrate the sample in the sampling mechanism so as to add the sample into the sample weighing module; the sample weighing module is used for weighing the weight of a sample; the cleaning module is used for cleaning the sampling module. The sampling module of the automatic sample weighing instrument is arranged, so that the sampling mechanism can be closed after a sample is taken, and flying dust pollution in the transfer process is avoided. Moreover, not only can the sample be taken, but also the sample can be transferred and added, so that the automatic sample adding process is simplified, and the sample adding efficiency is improved.

The invention discloses a hierarchical object modeling and rapid reconstruction method based on NeRF, and the method comprises the following steps: image preprocessing: initially obtaining an image video frame through a camera, carrying out the related processing of an input image, including semantic segmentation, depth estimation, normal estimation and internal and external parameter calibration, and generating a corresponding semantic graph, a depth graph, a normal graph and camera parameters; space partitioning: partitioning the scene according to the semantic graph information and defining a bounding box; adaptive sampling: performing adaptive sampling by combining the depth map, the normal map and the camera parameters, and determining a sampling point set; and performing hierarchical vectorization SDF reconstruction, performing hierarchical vectorization SDF reconstruction by using the sampling points to obtain hierarchical SDF representation describing the shape of the object, converting the hierarchical SDF into a triangular mesh model, and completing three-dimensional object modeling and rapid reconstruction. The invention provides a hierarchical object modeling and rapid reconstruction method based on NeRF, objects in a scene are rapidly reconstructed, and downstream editing tasks, interaction and other applications are supported.

The invention provides a vaginal secretion sampling device. The vaginal secretion sampling device comprises a shell, a sealing assembly and a sampling mechanism, the first end of the shell extends into the vagina to enable the through groove to correspond to the sampling position, then the sealing assembly is adjusted to open the through groove, then the second driving assembly is adjusted to drive the sampling block to extend out of the shell for sampling, at the moment, the spring is pressed, then abutting against the sampling block is cancelled, and the counter-acting force of the spring drives the sampling block to reset. And then the shell is moved to enable the through groove to correspond to another sampling position, then the first driving assembly is adjusted to drive the connecting sleeve to drive the sampling block to rotate to enable another sampling block to correspond to the through groove, at the moment, sampling can be carried out again by repeating the steps, and when the shell moves, the sampled sample is always located in the cavity, so that the sampling efficiency is improved. Sampling samples are effectively prevented from being polluted, repeated sampling can be carried out without repeatedly inserting the device into the vagina, the discomfort of a patient is reduced, the vagina of the patient is prevented from being scratched, and the practicability and the use safety of the device are improved.

The invention relates to a water quality detection sampling device based on an unmanned aerial vehicle and belongs to the technical field of water quality sampling. The water quality detection sampling device based on the unmanned aerial vehicle comprises the unmanned aerial vehicle, a floating body, a mounting block, a motor, a connecting rope and a connecting assembly, the floating body is arranged at the bottom of the unmanned aerial vehicle, the mounting block is arranged at the bottom of the floating body, and the motor is arranged in the mounting block; by arranging the loading structure, the connecting assembly and the sampling assembly, continuous multi-time sampling can be carried out, multi-point sampling can be carried out only by utilizing the unmanned aerial vehicle to adjust the position, the sampling efficiency is improved, meanwhile, by arranging the connecting assembly, the influence of water bodies with different depths on the water body with the required sampling depth can be reduced in the sampling process, and the subsequent detection precision is improved; the position of the whole device in the water area can be quickly adjusted by utilizing the unmanned aerial vehicle and the floating body, the influence of sundries in the water on the device is reduced, and the problem that the sample cannot be carried and returned due to the fact that a driving structure cannot be normally used due to weed winding is solved.

The invention discloses a mineral geological exploration sampling device with a cooling structure, which comprises a lower fixed flat plate, first electric telescopic rods are fixedly connected to two sides of the lower fixed flat plate, and foot pads are fixedly connected to movable ends of the first electric telescopic rods; cooling water is conveyed to the lower portion of the lower guide cylinder through the driving water pump and sprayed out through the water outlet holes to cool the sampling cylinder, the lower exploring drill bit and a surrounding geological layer, damage of high temperature to equipment is reduced, the service life is prolonged, soil is moistened, and the drilling difficulty is reduced; the sampling barrel can be taken down, samples can be collected and analyzed only through simple lifting operation, meanwhile, the stability and the sealing performance in the sampling process are guaranteed through threaded connection of the sampling barrel and the lower probing drill bit, guiding and supporting are provided for the sampling barrel through the lower guiding barrel, the situation that the sampling barrel and the lower probing drill bit are inclined due to long-time use is prevented, and the sampling efficiency is improved. And when the sampling barrel is lifted up, the sample cannot fall off due to vibration or inclination.

The invention relates to the technical field of ore sample preparation, in particular to an automatic quartz ore chemical analysis sample preparation device which comprises a material table, a sampling table is fixedly arranged on the side wall of the material table, a feeding hopper is fixedly arranged on the front wall of the sampling table, the lower end of the feeding hopper is communicated with a crushing assembly, and a crushing box is arranged on the crushing assembly; a grinding assembly is fixedly arranged on the bottom face of the crushing box, a grinding box is arranged on the grinding assembly, a screening assembly is fixedly arranged on the bottom face of the grinding box, a hollow screening box is arranged on the screening assembly, and a discharging frame is fixedly arranged on the bottom face of the hollow screening box. According to the invention, the crushed ore particles are more uniform, the existence of large ore blocks is reduced, the crushing quality is improved, the continuity and stability of the crushing process are ensured, the grinding effect is improved, the ground quartz ore particles are more uniform and fine, and the graded screening of the ore particles is facilitated; and rapid sample preparation of automatic quartz ore chemical analysis is realized.

The present invention relates to the technical field of rock drilling equipment, and proposes a rock drilling equipment, including: a support and a fixed seat fixedly connected to the top of the support, an auxiliary seat fixedly connected to the inner side of the fixed seat, a second drive motor installed at the bottom of the auxiliary seat, an output end of the second drive motor connected to a first one-way threaded screw, and one end of the first one-way threaded screw extends to the inner side of the auxiliary seat and is rotatably connected to the auxiliary seat. The present invention sets a sampling mechanism, the output end of the first micro electric push rod pushes the positioning seat to drive the small spiral drill rod to move to the outside of the large spiral drill rod, and at the same time, the output end of the first micro motor drives the small spiral drill rod to rotate, so as to drill and sample the rock layer at the specified position. Since a plurality of small spiral drill rods are arranged at equal distances, it is possible to sample rock layers of different depths, thereby improving the sampling efficiency.

The invention belongs to the technical field of underground water sampling equipment, and discloses an efficient underground water stratified sampling device which comprises a frame, the frame is provided with an operation table and a lifting device, the lifting device is connected with a plurality of groups of sampling devices in the height direction, each sampling device comprises a sampling barrel, and a plurality of water inlets are formed in the sampling barrels in the circumferential direction; the sampling barrel is rotationally connected with a plurality of rotating plates in the circumferential direction, the rotating plates are in one-to-one correspondence with the water inlets, and the rotating plates are fixedly connected with telescopic push-pull rods; a driving assembly is arranged at the top of the sampling barrel, is rotationally connected with the free end of the push-pull rod and is used for driving the push-pull rod to rotate in the direction close to or away from the sampling barrel; one side, close to the outer side wall of the sampling barrel, of the rotating plate is connected with a sealing element; the operation table is provided with a controller used for controlling the driving assembly to work. The problems that an existing water taking device is prone to causing cross mixing of water bodies at different depths, the sampling efficiency is low, and a water inlet is prone to being blocked are solved.

The utility model discloses a portable water quality on-line monitoring device, which comprises a monitoring box, a cylinder body placing part and a water collecting cylinder, the cylinder body placing part is arranged on one side of the monitoring box, and a cylinder body placing cavity is formed in the cylinder body placing part in the length direction of the cylinder body placing part; the water collecting cylinder is placed in the cylinder containing cavity, a driving mechanism is arranged in the water collecting cylinder, the output end of the driving mechanism is connected with a push block structure, the push block structure has the freedom degree of moving along the output end of the driving mechanism, a plurality of water inlet mechanisms are arranged on the side wall of the water collecting cylinder at intervals, and a plurality of water drainage mechanisms are arranged on the side wall of the water collecting cylinder at intervals. The multiple water inlet mechanisms and the multiple water outlet mechanisms are in one-to-one correspondence, the water inlet mechanisms and the water outlet mechanisms are oppositely arranged on the side wall of the water collecting barrel, and when the push block structures move to the opposite water inlet mechanisms and water outlet mechanisms, the water inlet mechanisms, the push block structures and the water outlet mechanisms communicate with one another. The water quality online monitoring device can solve the problem that an existing water quality online monitoring device cannot detect water quality at different depths.

The invention belongs to the technical field of soil sampling, and particularly relates to a soil sampling device for building construction, which comprises a pedestal, two lifting frames are arranged on the end surface of the pedestal, a moving plate is slidably arranged between the two lifting frames, a mounting shell is arranged on the end surface of the moving plate, and a sampling lifting assembly is arranged on the end surface of the mounting shell. The sampling lifting assembly is connected with a sampling rod, an outer barrel is rotationally arranged on the portion, on the bottom end face of the moving plate, of the outer portion of the sampling rod, and a drill bit is arranged at one end of the outer barrel. Large stone particles are prevented from influencing acquisition of soil information; by arranging the sampling rod and the sampling barrel, repeated drilling can be prevented, performance consumption is reduced, meanwhile, the drilling straightness can be improved, repeated sampling is avoided, and then the accuracy of soil collection information is improved.

The present invention belongs to the field of geological sampling technology, and particularly relates to a sampling device and a sampling method for copper ore exploration, comprising: a vehicle body, a mobile support portion is provided at the bottom of the vehicle body, a lifting device is fixedly connected to one side of the top of the vehicle body, a lifting plate is fixedly connected to the movable end of the lifting device, an automatic leveling drive assembly is installed on the lifting plate, a drilling sampling assembly is installed at the center of the automatic leveling drive assembly, the automatic leveling drive assembly is transmission-connected to the drilling sampling assembly, and a central slot for the drilling sampling assembly to pass through is provided in the middle of the vehicle body. The device does not require manual leveling, simplifies the leveling steps, facilitates the drilling sampling assembly to directly and vertically drill into the soil, and greatly improves the sampling efficiency.

The invention relates to the technical field of sampling inspection equipment, in particular to a powdery cosmetic sampling inspection device which comprises a conveying pipeline, and two fixing boxes are bilaterally symmetrically mounted at the top of the conveying pipeline. The two overturning material taking mechanisms are in linkage through the combined driving assembly, reciprocating driving assemblies in the overturning material taking mechanisms reciprocate to drive the self-cleaning mechanisms to rotate in a reciprocating mode, and therefore the upper surface of the material leaking hopper is scraped in a reciprocating mode through a material scraping plate, the material taking frequency is reduced, and the material taking efficiency is improved. According to the automatic labeling device for the sampling bottles, self-cleaning of the hopper is facilitated, the two sampling bottles are synchronously clamped and lifted through the clamping lifting mechanism, synchronous labeling of the two sampling bottles is achieved through extrusion of the pressurization driving assembly on the labeling assembly, and integrated linkage between the clamping lifting mechanism and the labeling mechanism is achieved.

The invention discloses a deep geological sample sampling device and a sampling method, and relates to the technical field of geological sampling measurement. The coring device comprises a water diversion connector, the lower portion of the water diversion connector is in screwed connection with an internal coring cylinder, the middle of the water diversion connector is in screwed connection with an external coring cylinder, a coring bit is arranged at the bottom of the external coring cylinder, and a coring inner cylinder is arranged in the internal coring cylinder. A rock core top clamping assembly is arranged between the coring inner cylinder and the built-in coring cylinder, a rock core bottom clamping assembly is arranged at the top of the coring inner cylinder, and a rapid coring assembly is arranged on the built-in coring cylinder; the rock core top clamping assembly and the rock core bottom clamping assembly are arranged, the rock core top plate clamping assembly and the rock core bottom clamping assembly are used for clamping and fixing the top and the bottom of a sampling rock column correspondingly, the stability of the rock column in the sampling and lifting process is guaranteed, and sample damage and loss caused by falling or instability of the rock column are avoided.

The utility model relates to a water quality monitoring sampling device which comprises a mounting plate, a fixing rod and a sampling assembly, the fixing rod is fixedly mounted at the top of the mounting plate, a fixing plate is fixedly mounted at the top of the fixing rod, and a flow dividing box is fixedly mounted at the top of the fixing plate; two water inlet pipes extending into the fixing plate are fixedly installed at the bottom of the flow dividing box, electromagnetic valves are fixedly installed on the surfaces of the water inlet pipes, first hoses are connected to the bottom ends of the water inlet pipes, a limiting disc is slidably installed on the surface of the fixing rod, and two connecting pipes are fixedly installed on one side of the bottom of the limiting disc. The end, away from the flow dividing box, of each first hose communicates with the corresponding connecting pipe. According to the water quality monitoring and sampling device, water at multiple positions can be sampled and put into different sample tubes in one working process through the sampling assembly, a contrast experiment can be conveniently carried out when water at different positions at the same depth is sampled, and the water quality monitoring and sampling efficiency is improved.

The invention discloses a mechanical arm grabbing method and system based on action branch architecture value advantage learning. The method comprises the steps that a mechanical arm grabbing task is modeled as a Markov decision problem; based on the action space, a VA learning algorithm is introduced, and a main network and a target network of an action branch structure are built; based on a greedy strategy, training the main network and the target network, and accumulating an experience playback pool; and performing setting according to an actual scene, and combining a greedy strategy and the experience playback pool to complete a target capture task. The system comprises a modeling module, a network construction module and a mechanical arm training module. According to the method, the deep learning algorithm based on the action branch architecture is used for exploring the deterministic strategy, the discrete state action space of the mechanical arm can be better processed, and then the control performance is improved. The method can be widely applied to the field of mechanical arm control.

The invention provides a traction control unit and a control method thereof, a traction converter and a traction control system. Wherein the traction control unit comprises a data acquisition module and a physical layer, and the data acquisition module and the physical layer are integrated in a first field programmable gate array; wherein the first field programmable gate array is configured to output a driving control signal and control the data acquisition module and the physical layer based on the driving control signal; the data acquisition module is configured to acquire 320 sets of intermediate process data of the traction control unit based on the driving control signal and send the intermediate process data to the physical layer; and the physical layer is connected with the data acquisition module and is configured to transmit the received intermediate process data based on the driving control signal. The traction control unit disclosed by the invention can realize high-precision and high-frequency acquisition of intermediate process data, so that the overall performance and the operation efficiency of a system are improved.

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to river water sampling equipment for hydraulic engineering. Comprising a floating platform, a winch is fixedly installed on the upper surface of the floating platform, the free end of a fixing rope on the winch downwards penetrates through a through hole of the floating platform and is fixedly connected with a sampling mechanism, and four advancing mechanisms used for pushing the floating platform to move are evenly arranged on the periphery of the floating platform. The traveling mechanism is arranged on the floating platform and can push the floating platform to move accurately, so that the sampling equipment can move to any area for sampling, and the accuracy of a detection result is further ensured; a plurality of sampling cavities are formed in the sampling column and can be used for collecting and storing a plurality of samples, so that the sampling equipment can continuously sample for multiple times, and the sampling efficiency is remarkably improved.

The invention belongs to the technical field of deep stratum drilling and completion, and discloses a crustal stress inversion method utilizing MCMC and stress polygon constraint, which comprises the following steps: collecting geomechanical parameter prior distribution information, well wall damage information and observed rock uniaxial compressive strength and standard deviation thereof; sampling the target geomechanical parameters according to the suggested distribution on the basis of an MCMC method under the condition of meeting a crustal stress quadratic constraint model; calculating the acceptance rate of the sampling result according to the prior distribution information and the observation sample by using a delay rejection algorithm; updating the suggested distribution characteristics by adopting a self-adaptive algorithm; and the above process is repeatedly sampled until the sampling number is met, and the combustion period is abandoned to realize the inversion of the crustal stress. According to the method, the uncertainty influence of reservoir geomechanical parameters is considered, the reservoir horizontal crustal stress probability distribution condition is analyzed more objectively through combination of prior information and observation samples, and theoretical and technical guidance is provided for horizontal crustal stress prediction and well circumference stress analysis.

The invention relates to the field of water quality detection, in particular to a combined water environment monitoring device convenient to disassemble and assemble and a use method. The technical problem to be solved is that an existing water environment monitoring device cannot accurately position and collect a detection sample under the influence of water flow. According to the technical scheme, the device comprises a shell and further comprises a threaded cylinder frame, the threaded cylinder frame is in threaded connection with the interior of the shell, a winding cylinder is rotationally connected into the threaded cylinder frame, and the threaded cylinder frame is fixedly connected with a first waterproof shell. The device has the beneficial effects that the high-density shell is high in density and small in buoyancy influence, so that the first driving disc can be driven to move downwards in water, the first driving disc is rotated by utilizing water pressure, the sliding valve block is further driven to slide, and a water sample is collected by the liquid storage barrel and is rapidly detected; and the high-density shell can drive the spherical claw to dig sludge at the water bottom to serve as a sample, positioning is provided for the device, the water sample collection efficiency and the water area positioning precision are improved, and the water sample detection result precision is improved.