497results about How to "Achieve observation" patented technology

The invention discloses a 3D terrain imaging system of the interferometric synthetic aperture radar (InSAR) and an elevation mapping method thereof, which mainly solve the problems that the existing InSAR has bad imaging pragmaticality and can not implement 3D elevation mapping on the fast-changing terrain and the transilient terrain. The system comprises three sub-aperture antennas, a radar transmitter, a radar receiver and an imaging data processor; the imaging signal processor comprises a SAR image processing unit and an InSAR image processing unit. The invention receives radar echo through the three sub-apertures, then conducts SAR imaging process on the radar echo respectively received by the three sub-apertures, and then conducts InSAR imaging process on the obtained SAR complex pattern, wherein the InSAR imaging process comprises image registration, phase filtering and phase unfolding based on cluster analysis. The processed InSAR phase unfolded image is processed with an elevation inversion to recover a three dimensional digital elevation map. The invention has the advantages of wide adaptability to mapped terrains, and high imaging effectiveness, therefore, the invention can be used in the mapping of the 3D terrain.

The invention discloses a plant root system in-situ dynamic observation device, system and method under soil culture conditions. The device provided by the invention is a growth chamber for plant root system growth and comprises a main chamber and a plurality of sub chambers, wherein the main chamber and the sub chambers are arranged on the same bottom plate, each sub chamber is a frame body space formed by two relative vertical transparent observation surfaces and one outer side surface, and spaces which are communicated with each sub chamber and are formed after all of the sub chambers are engaged in a radial shape form the main chamber. The system comprises a growth chamber, a light shielding cover, a water fertilizer regulation and control system, an image collecting system and a root system parameter analysis system. Soil which gets wet through spraying is loaded into the growth chamber, plants are planted in the main chamber, the water fertilizer regulation and control system is used for regulating the water fertilizer conditions in the sub chambers, the image collecting system is utilized for carrying out image catching on the root systems, and the root system parameter analysis system is utilized for carrying out measurement and analysis on the root system parameters. The device, the system and the method provided by the invention realize the in-situ dynamic observation on root systems of different types of crops, particularly on large and medium-sized crops, and are also applicable to the simultaneous observation of dynamic growth conditions of root systems under different culture conditions.

The present invention relates to a mobile robot system, include a 3-freedom mobile platform, a 5-freedom robot, vision system and comptuer control system. Its camera with rotation and pitching function is mounted in the top end of straight-line guideway of robot, the mobile platform can implement forward, backward, leftward, rightward and automatic revolving 3-freedom omnibearing movement, and its 5-freedom robot is consisted of 1 moving joint and 4 turning joints, and its operation is flexible. The movement of said robot can implement large range movement operation function. Besides, said invention also provides the application range and method of said mobile robot system.

The invention discloses an observation system and determining method for the resuspension quantity of deep-sea internal waves to seafloor sediments. The observation system includes a seafloor observation platform, a cable and an anchoring tethered weight. The seafloor observation platform is equipped with an acoustic releaser, a single-point ocean current meter, a turbidimeter, a high-precision conductivity-temperature-depth instrument and a sediment capture device, and the cable is equipped with a main floating body and a sub floating body; a part, located at the middle of the cable, of the main floating body is equipped with an acoustic doppler current profiler; the sub floating body is provided with the turbidimeter and the high-precision conductivity-temperature-depth instrument; the anchoring tethered weight is a gravity anchor with a square-shaped clamping groove and a fixed ring. The determination method includes the steps: calibrating the instruments indoor, placing and recovering the observation system by an auxiliary ship, reading the data of the observation instrument and analyzing the composition of captured suspended matters, and determining the resuspension quantity of the internal waves to the sediments. The observation system can be placed on the deep sea bottom safely and steadily, and can observe the full-water-depth marine dynamic environment parameters fromthe seafloor to the sea surface, and determines the resuspension quantity of the internal waves to the sediments.

The invention relates to a method and a device suitable for measuring the fluffing and pilling amount and abrasion amount of a textile. The device is composed of a cloth sample barrel for coiling and clamping the textile, a rubbing mechanism for fluffing and pilling a cloth sample, a mini-type dust collector for collecting fallen fibers and fuzzy balls, an electrostatic electrode for assisting filoplume to be vertical, a collector for shearing and collecting the fuzzy balls and the filoplume, an optical measurement system for observing the fuzzy balls of the cloth sample, an electronic scale for weighing the weight of the filoplume fuzzy balls, a data acquisition and control system and a computer. The measurement method comprises the following steps: after coiling the cloth sample by equal tension, immediately measuring the filoplume significance as well as the quantity, form, size and distribution of the fuzzy balls; rubbing, fluffing and pilling to prepare a sample and synchronously measuring the process and measuring the filoplume significance of a final rubbing sample, the fuzzy ball quantity, the abrasion to the filoplume fuzzy balls and the remaining amount. The device and the method are ingenious, practical, accurate and quantitative; in-situ measurement for one machine with a plurality of purposes and one measurement process with a plurality of indexes is realized; the device and the method can be used for preparing the sample by fluffing and pilling the textile, measuring the fluffing and pilling amount and abrasion amount of the textile, and carrying out comprehensive analysis and evaluation.

The invention discloses an intelligent detection system for a tunnel power equipment. According to the invention, an on-rail tour inspection robot is in wireless communication with a background monitoring platform through an in-tunnel wireless network equipment. The on-rail tour inspection robot carries a communication device, a control device and a detection device. The control device is therein provided with a tour inspection control model and an emergency control model in advance. After the detection device detects an emergency, the control device switches from a tour inspection control mode to an emergency control model according to the emergency information. In the tour inspection control model, the control device controls a drive device of the on-rail tour inspection robot to drive the on-rail tour inspection robot for moving tour inspection on the rails in the tunnel and controls the detection device to detect a specified device, and the detection information is uploaded to the background monitoring platform through the communication device. In the emergency control mode, the control device controls the on-rail tour inspection robot to perform different actions according to the different emergency information. Tour inspection of the tunnel power equipment is realized automatically, the detection efficiency is improved and safety of workers is ensured in the maximal degree.

An arc-driven large-bore astronomical telescope is driven by a RE permanent-magnet synchronized arc motor. A control mechanism includes an upper machine and a lower machine; the upper machine is connected with the lower machine through serial communication; the lower machine carries out the real-time control; a motor stator is composed of 15 blocks, each block consists of 9 complete silicon steel plates and two silicon steel plates for reducing the edge effect; an armature winding is arranged according to UVWUVWUVW from right to left; a rotor is composed of 4 blocks and has 120 magnetic steel plates in total, the rotor adopts the torque design for reducing tooth space and is provided with a fastening device; an absolute coder and an incremental coder are simultaneously arranged in the control mechanism signal collecting and comparing links, the former is used for the turnover of a servo motor and the latter is used for testing the position of the servo motor; the signal of the coder is transferred to the DSP module of the lower machine through a singlechip; a drive circuit adopts a digital-driven intelligent power module. The present invention can achieve the needs of long-time, high-precision tracing and observing various celestial bodies and meet the requirements of precision and wide speed regulation in astronomic observation.

The invention relates to a method and device for observing and controlling a rotor position in motor control. According to the method and the device, an initial position angle of a motor rotor can be observed; angular errors caused by an imprecise assembled angle of a Hall sensor can be eliminated by online discrimination of software; a real-time speed detection program is provided to eliminate an angular accumulated error caused by imprecision of an angular speed omega; a rotor position angle can be precisely tracked in a motor vector control operation process, the rotor angle is prevented form overflowing, and self-detection of the motor in reverse rotation can be realized; and when a certain sensor has a fault, a system can judge a fault point per se and performs self-adaption to achieve the function of still normally running. According to the device and the method, independence on a hardware circuit is reduced, observation and real-time tracking of the rotor position angle can be realized, the function of fault judgment of the system can be used for protecting the motor, and loss caused by motor locking or running out is prevented. The device has a great practical value in the fields of electric vehicles and precise machine tools, and has the advantages of reliability in operation, low cost and wide application range.

The invention provides a method for controlling axial direction of a high-precision magnetic bearing based on an interference observer. The method consists of a controller and the interference observer, wherein the interference observer comprises a Q filter and a rationalization generalized object inverse QGn part; the controller in a control system calculates according to displacement deviation to obtain basic control quantity so as to form a position closed loop control system; an interference value obtained by observation of the interference observer is negatively fed back into the basic control quantity to compensate exterior interference; and the formed current control quantity drives power amplification to realize high precision suspension of the magnetic bearing. The method leads differences caused by both exterior interference and objective parameter variation to be equivalent to a control input end, and introduces equivalent compensation into the control quantity to realize interference inhabitation. The method can carry out online observation and effective inhabitation against exterior interference which is not modeled or known, thereby improving control precision of suspension, and contributing to stability of the system.

The invention discloses a dynamic evaluation method of cell coverage in a communication network, which comprises the steps of: analyzing a plurality of measurement reports with different formats in a communication network to obtain measurement report data; computing a key coverage correlated vector between a target cell and any one measurement cell according to the measurement report data to obtain an orientation vector between the two cells; modifying the vector geographical position of the orientation vector by using a position characteristic point; ensuring a cell azimuth angle of the target cell; obtaining a target cell coverage distribution map according to the modified orientation vector and the evaluated cell azimuth angle; computing the maximum coverage distance and the coverage area of the target cell according to the target cell coverage distribution map; and performing over coverage judgment to the coverage of the target cell according to the maximum coverage distance and the coverage area of the target cell, and evaluating the coverage quality of the target cell. The method has the important significances that the service quality of a mobile communication network is improved, and the perception level of a mobile subscriber is improved.

The invention relates to an immersive three-dimensional rendering projection system and method for a moving view point on a curved screen. The method is based on an immersive three-dimensional rendering projection system for a moving view point on a curved screen. The method comprises the following steps: acquiring user information: tracking user's head position and posture information, and estimating user's binocular positions and sight direction; setting three-dimensional rendering parameters: according to the estimated user's binocular positions and sight direction, adjusting a three-dimensional camera in real time to perform three-dimensional rendering of the moving view point on the parameters; performing dynamic parallax adjustment: performing post processing on the parallax of the rendered three-dimensional image according to the relative position relation between the user and the screen and the geometric shape information of the projection screen, so that the user views comfortable and correct three-dimensional images at his position; optimizing user perception: for user's head posture and eyeball movement, further optimizing the image respectively after the dynamic parallax adjustment; and projecting a three-dimensional scene: watching a virtual roaming three-dimensional scene by the user wearing a pair of three-dimensional glasses.

The invention discloses a visual high-temperature fluidized bed. The fluidized bed is provided with a visual window, and high-temperature-resistant quartz glass covers the visual window which is sealed by a high-temperature-resistant sealing gasket; a radiation shield is arranged outside the visual window, infrared ray resisting glass is arranged on the exterior of the radiation shield, and a fluidization and reaction phenomenon in the bed is observed through the infrared ray resisting glass and the high temperature resistant quartz glass. The visual high-temperature fluidized bed provided by the invention firstly provides an experimental apparatus for observing a gas-solid flow characteristic under a high-temperature operation state; the operation bed temperature of the related visual high-temperature fluidized bed can achieve more than 850 DEG C, the high-temperature fluidized bed is provided with the visual window, a fluidization reaction phenomenon is visually shot or observed through a CCD (Charge Coupled Device) high speed camera, a camera or naked eyes, and the visual high-temperature fluidized bed is beneficial to research of fluidized bed gas-solid flow and reaction mechanism; meanwhile, a sealing and radiation protection measure is adopted, the safe operation of the fluidized bed is guaranteed, heat loss possibly caused by the visual window can be reduced furthest.

The invention discloses a no-cable type submarine observation platform suitable for whole sea depth. The no-cable type submarine observation platform comprises a frame-type body, a floating body, a wing plate, a height measuring device, a floating ball cabin, a leveling mechanism and a counterweight and releasing device, wherein the floating body, the wing plate, the height measuring device, the floating ball cabin, the leveling mechanism and the counterweight and releasing device are mounted on the frame-type body. The floating ball cabin seals a system circuit while providing buoyancy; the system circuit uses the height measuring device to detect that the frame-type body descends to a set height from the seabed, and then controls the wing plate to unfold to enable the platform to land smoothly, and when the frame-type body reaches the seabed, the leveling mechanism is controlled to adjust the frame-type body to stand horizontally on the seabed; and after the underwater operation of the system circuit is completed, the releasing mechanism is controlled to abandon a counterweight and the wing plate is controlled to retract, so that the observation platform emerges from the water under the buoyancy of the floating body, and automatic recovery is realized. The submarine observation platform adopts a no-cable laying method, is not limited by the length of cables, the working waterdepth can reach 11,000 meters or more, and the submarine observation of the whole sea depth can be realized.

The invention provides an ultrasonic-velocity free vortex wind tunnel, comprising a transition section (1), a stabile section (2) and a spray pipe experiment section (3), wherein the transition section (1) is used for importing airflow and carrying out primary rectification to the airflow; the stable section (2) is connected with the downstream of the transition section (1) and used for carrying out secondary rectification to the airflow; and the spray pipe experiment section (3) is connected with the downstream of the stable section (2), a transparent window is formed on the peripheral wall of the spray pipe experiment section (3), and the spray pipe experiment section (3) comprises a spray pipe part (31) constructed into a free vortex spray pipe structure for accelerating the airflow to an ultrasonic-velocity free vortex state and an experiment part (32) arranged at the downstream of the spray pipe part (31) and used for ensuring that the velocity field of the airflow at the inlet of a wind hole experiment part satisfies the ultrasonic-velocity free vortex distribution so as to obtain ideal ultrasonic-velocity free vortex in the wind hole.

The invention relates to a data fusion method and system of a millimeter-wave cloud radar. The data fusion method comprises the following steps of building an observation platform of the millimeter-wave cloud radar, wherein the observation platform comprises a control module, a signal processing module, an information acquisition module, a main control module and a data fusion module; controlling the radar to carry out meteorological target detection according to a multi-mode working mode by the control module, obtaining detection data and transmitting the detection data to the signal processing module; carrying out signal processing on the detection data by the signal processing module and outputting; acquiring the signal-processed detection data output by the signal processing module by the information acquisition module, and carrying out package processing on the acquired detection data and storing the processed detection data into the main control module; and carrying out data fusion on the detection data stored in the main control module by the data fusion module and obtaining a fusion result. The data fusion method has the advantages that the observation to meteorological targets in the full-height detection range is realized, the data quality and the detection efficiency are improved and the adaptability of the cloud radar to different meteorological targets is enhanced.

The invention discloses a high-pressure cooling-heating table device for in-situ observation of an aquo-complex microscopic reaction kinetics process. The high-pressure cooling-heating table device comprises a high-pressure cooling-heating table body, an observation system, a gas supply system, a gas discharge system, a temperature control system, a pressure control system and a computer data acquisition system, wherein a cooling channel connected with the temperature control system and used for controlling the temperature in a reaction tank is also arranged inside a base; the high-pressure cooling-heating table body further comprises a gas inlet and a gas outlet communicated with the reaction tank; the gas supply system and the gas discharge system are respectively communicated with the gas inlet and the gas outlet of the high-pressure cooling-heating table body, and are used for providing high-pressure gas for the high-pressure cooling-heating table body. The high-pressure cooling-heating table device for the in-situ observation of the aquo-complex microscopic reaction kinetics process has the beneficial effects that the observation on gas hydrate through laser Raman under a high pressure environment is realized; the allowable pressure is large; high-pressure buffer tanks are respectively arranged at the gas inlet end and the gas outlet end of the high-pressure cooling-heating table body, so that the pressure and the gas flow velocity inside the high-pressure cooling-heating table can be effectively controlled.

The invention relates to a method and a system for real-time embedded software test result data analysis. The method comprises: a step of loading test result data, which is to call a database operation function to load the test result data to a mySOL database and display the test result data in rows in a list view according to variables; a step of analyzing test result data in a list form based on a list view function; a step of analyzing test result data in a curve drawing form based on a curve display function; a step of reading test result data in real time, completing dynamic playback of the test process and reproducing the test process based on a test process playback function; and a step of generating an exrensible markup language (XML)-based test result analysis report.

The present invention relates to a modular scanning probe microscope combined with inverted fluorescence microscope. It is formed from five modules, in which the first module is inverted fluorescence microscope, second module is three-jaw approaching device, third module is scanning head, fourth module includes transparent sample table and X, Y and Z three-dimensional scanner and fifth module is laser microscopic extension module. Said invention also provides its working principle and concrete operation method.

The invention relates to a remote medical monitoring and security monitoring system, and aims to solve technical problems that functions of exiting monitoring systems are simplex and the systems are poor in mutual compatibility, etc. The remote medical monitoring and security monitoring system comprises an all-in-one machine, a center cloud server and a monitoring center. The all-in-one machine integrates a medical monitoring system, a regional environment monitoring system, a video monitoring system, an entrance guard system and an alarm system into one body. Data packets acquired and generated by the all-in-one machine is uploaded to the center could server in real time. The center could server receives and processes and stores data for the monitoring center to use. According to the invention, comprehensive and multi-aspect monitoring can be carried out on monitored areas. Through a cloud technology platform, management can be carried out on the plurality of monitored areas, and large scope monitoring and remote distance observation can be realized.

The invention belongs to the technical field of oil-gas migration, and provides a device and a method for physically and quantitatively simulating an oil-gas migration path in real time in an on-line manner. The problem that the existing oil-gas migration only can be measured qualitatively is solved. A center control platform of the device is respectively connected with a control system and a monitoring system; a data processing and analyzing system is connected with a detecting system; the device also comprises a simulating box; the control system comprises a pressure control system, a temperature control system and an electrode control system; the simulating box is respectively connected with the pressure control system, the temperature control system and the electrode control system; the detecting system comprises a pressure detecting system, an electrode detecting and recording system and an oil and water metering system; the simulating box is respectively connected with the pressure detecting system, the electrode detecting and recording system and the oil and water metering system; and the data processing and analyzing system is respectively connected with the electrode detecting and recording system and the oil and water metering system. The existing quantitative measurement mode is omitted, and the device is high in precision and high in experimental defect and is convincing.

The invention relates to a Markov jump based distributed event triggered filtering system and a design method thereof. The system comprises N filtering links, and is characterized in that each filtering link comprises a sensor, an event trigger, a zero-order retainer and a filter which are sequentially connected, the sensors are connected with a measured object, the filter in each filtering link further performs communication connection with the other neighbor filters, the communication topology among the N filters in the system is of a non-homogeneous Markov jump mode, the mutually connected filters perform information exchange under each type of non-homogeneous Markov link topology, and the filter in each filtering link is further connected with the corresponding event trigger in the filtering link. Compared with the prior art, the Markov jump based distributed event triggered filtering system has good anti-noise capacity, effectively reduces the number of data transmission times under the premise of ensuring the filtering performance and saves network resources.

An autofocus control method, an autofocus controller, and an image processor capable of eliminating influence originated from an optical system, realizing a stable autofocus function. In calculating a focus evaluation value of each sample image obtained at plural focus positions, dark and light patterns of brightness originated from the optical system is reduced by applying smoothing processing to the obtained sample image, and the focus evaluation value is calculated based on the smoothed sample image. Further, the focus evaluation value is standardized by average display brightness of the smoothed sample image to obtain an optimal evaluation value.

The invention discloses a shield tunneling machine three-dimensional virtual simulation system and a simulation method and mainly aims at solving the problems that a motion process of the shield tunneling machine can not be simulated in real time and roaming in the shield tunneling machine can not be realized in the prior art. According to the technical scheme, the simulation method comprises the following steps: firstly, constructing a shield tunneling machine three-dimensional model and optimizing; secondly, acquiring real-time working condition data of the shield tunneling machine by a sensor and transmitting to a data server; thirdly, acquiring data of the data server by a system server and carrying out data transformation, and transforming real-time working condition data of shield construction into data for driving the shield tunneling machine three-dimensional model to move; and fourthly, importing the shield tunneling machine three-dimensional model and the data for driving the shield tunneling machine three-dimensional model to move into a simulation environment to realize three-dimensional simulation of a shield tunneling machine construction process, historical playback of the shield tunneling machine construction process, roaming of a working scene of the shield tunneling machine and monitoring of a shield tunneling machine construction state, so that an operator knows the working principle and the actual working condition of the shield tunneling machine more directly and clearly. The simulation system and the simulation method which are disclosed by the invention can be applied to teaching and training of the working principle of the shield tunneling machine.

The invention discloses an observation method of a hypersonic internal flow-field wave structure, particularly a method for obtaining a model internal flow-field wave structure, which is simple, feasible, and low in construction cost. The observation method utilizes theories of glow discharge flow-field display technologies to carry out partial cross-section observation on the model internal flow-field wave structure. In a test, one side of a model is made of a transparent material, so that glow discharge images are shot conveniently; a plurality of discharge electrodes are arranged on internal relative walls of the model, a discharge control unit is adopted for selecting a pair of the electrodes in sequence to discharge, and a synchronous control unit is adopted for synchronizing glow discharge and camera shooting, therefore, flow-field wave structures of multiple sections can be obtained in one test. The method has the advantages of simple structure and relatively low equipment requirements, and is a flow-field display method which can be used in hypersonic low-density wind tunnels.

The invention discloses a second harmonic imaging method and a second harmonic imaging device for single suspended particles. According to the method, Bessel laser is adopted for effectively capturing the suspended particles, and remote noncontact and noninvasive capture and high capture efficiency are realized; imaging is realized by second harmonic signals generated on the particles by femtosecond laser, polarization resolution, spectral resolution and three-dimensional imaging are realized, and imaging and observation of fine particles are realized. The device for implementing the second harmonic imaging method has advantages that due to adoption of common optical devices, low cost is realized while imaging of the second harmonic signals can be well realized, and suitableness for popularization is achieved.

The invention relates to a device and a method for measuring fluffing and balling shape as well as hair bulb stripping of a yarn. The device comprises a mechanism clamping hair bulbs to implement stripping, a yarn delivery mechanism performing equal-tension close packing, a yarn winding mechanism winding the yarn at a constant speed, a yarn grinding mechanism performing friction on the close packed and wound yarn, a translation driving mechanism driving the yarn delivery mechanism and the yarn winding mechanism in a switching manner, an abrasion object collector, a microimaging system and a control and data analysis system. The measuring method comprises the steps that a gap bridge wheel of the translation driving mechanism transposes the yarn delivery mechanism and the yarn grinding mechanism, and is matched with the yarn winding mechanism, so that close packing yarn winding and yarn grinding sampling are achieved; a yarn grinding sample in a yarn grinding process is measured in situ; and comprehensive measuring and evaluation are performed on the yarn grinding sample in a final state. The device is ingenious in structure, practical, precise in measuring, quantitative, and multipurpose, is an in-situ measuring device for measuring multiple indexes, and can be used for measuring of the hair feather and hair bulb quantity, the shape, the abrasion loss and the back-and-forth drag stripping property of the yarn, and for comprehensive evaluation of the fluffing resistance and the balling resistance.

The invention discloses a multi-pass SAR coherent change detection method based on a general likelihood ratio. The multi-pass SAR coherent change detection method includes the steps that S1, multi-pass SAR image pairs are selected and recorded as {f1, f2,..,fk}; S2, multi-pass SAR image pixel pairs are selected; S3, maximum likelihood estimation is carried out on a covariance matrix; S4, likelihood ratio hypothesis testing is carried out; S5, the multi-pass SAR image pixel pairs are sequentially selected, and the step S4 is repeated to obtain a change detection result. The multi-pass SAR coherent change detection method assumes that complex pixels corresponding to an SAR imaging area changing in the multiple image collecting stage and complex pixels corresponding to the SAR imaging area not changing in the multiple image collecting stage follow different circular symmetry complex Gaussian distributions respectively, the covariance matrix of the circular symmetry complex Gaussian distributions in the assumption is estimated, then detection statistics is determined and compared with a threshold, whether the two assumptions succeed or not is checked, namely whether the imaging area changes or not is detected, the tiny changes can be detected, and the changing process can be observed.

The invention discloses an experimental system for water and sand movement under a river network convergence region complex riverbed and a simulation method of the experimental system. The system structurally comprises a main stream water tank, a tributary water tank, a water tank downstream area, an upstream A water box, an upstream B water box, a downstream water box, an A water pumping pipeline, sand adders and a B water pumping pipeline, wherein the upstream of the main stream water tank is communicated with the upstream A water box, the upstream of the tributary water tank is communicated with the upstream B water box, the upstream A water box and the downstream water box are communicated with each other through the A water pumping pipeline to achieve water flow circulation, the upstream B water box and the downstream water box are communicated with each other to achieve water flow circulation, the A water pumping pipeline is provided with an A electromagnetic flowmeter, an A valve, and an A variable frequency pump, the B water pumping pipeline is provided with a B electromagnetic flowmeter, a B valve and a B variable frequency pump, the main stream water tank is provided with an A sand adder, and the tributary water tank is provided with a B sand adder. The experimental system for the water and sand movement under the river network convergence region complex riverbed and the simulation method of the experimental system have the advantages that simulation and observation of flow, sediment movement and bed surface form change of complex riverbeds like dells and longitudinal dunes of river network convergence regions are achieved.

The invention relates to a distributed filtering network system and a design method. The system comprises the following parts: a filter network unit comprising filters distributed at different physical sites; a sensor sampling unit comprising vehicle-mounted sensors and filtering sensors, wherein the vehicle-mounted sensors are embedded in an automobile suspension system and acquire state information of the automobile suspension system, and the filtering sensors are embedded into the filters and acquire exchange information between the filters and set adjacent filters; and an event trigger unit comprising event triggers corresponding to the filters, wherein each event trigger determines event occurrence time of a corresponding filter, at the event occurrence time, the filters receive the automobile suspension system state information acquired by the corresponding vehicle-mounted sensors and the exchange information of the set adjacent filters, and otherwise, the filters do not act. Compared to the prior art, the system provided by the invention can satisfy the demand of multiple terminals for simultaneously obtaining data, can also effectively prevent filter network collapse, and is low in energy consumption, high in efficiency and high in stability.

The invention relates to a device and method used for measuring the pilling form and pulling force of densely arranged yarns. The device consists of a yarn winding mechanism, a yarn grinding mechanism, a yarn feeding mechanism, a translational driving mechanism, a wearer collector, a microscopic camera system, a clamping and pulling mechanism, and a control and data analysis system. The method comprises the steps of bridging and rotating the yarn feeding mechanism and the yarn grinding mechanism through the translational driving mechanism, kinetically matching with the yarn winding mechanism to achieve the winding of the densely arranged yarns and yarn grinding sample preparation, and carrying out on-line measurement on yarn samples in the process of yarn grinding as well as comprehensive measurement, calculation and evaluation on yarn grinding samples in a final state. The device is ingenious in structure, practical, and precise and quantitative in measurement, and the device and the method are an in-situ measuring device and an in-situ measuring method which are multi-purpose and multi-index in one measurement. The device and the method can be used for the measurement of the pilling quantity, form and wear quantity of the yarns and pulling forces of hairiness and hair bulbs as well as the comprehensive evaluation of the pilling resistance.