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105 results about "Continuous measurement" patented technology

Continuous measurement is conducted in a way in which ALL instances of a response class are detected during an observation period.

Method and system for intelligent identification and grading of unmanned aerial vehicle aerial survey at geological disaster hidden danger point

The invention relates to the technical field of geological disaster monitoring, and discloses an unmanned aerial vehicle aerial survey intelligent identification and grading method and system for geological disaster hidden danger points, and the method comprises the steps: converting a pixel-level identification result into hierarchical data which retains a spatial topological structure through constructing a confidence quad-tree; establishing a weighted decision grid based on aerial survey parameters to realize coupling modeling of observation conditions and confidence uncertainty, calculating topology difference to generate a spatial difference field to quantify the deviation degree of a confidence field and a standard grading decision surface, and finally executing self-adaptive grading judgment to output a risk grade result with a confidence label; according to the method, the problem of confidence field and decision boundary space topology mismatch caused by truncation of confidence continuous measurement information in a grading stage in a traditional serial architecture is solved, systematic underestimation of misjudgment risks in observation condition limited areas such as alpine and gorge areas is avoided, and consistency of actual credibility of a risk quantification result and a nominal grade is realized.
Owner:YUNNAN QUANCEJINGDA TECH CO LTD

Breathing machine intelligent off-line evaluation system based on multiple parameters

The invention relates to the technical field of breathing machine off-line evaluation, in particular to a breathing machine intelligent off-line evaluation system based on multiple parameters, which is characterized in that a data acquisition unit acquires breathing and physiological parameters of a patient in real time; the data analysis unit extracts a respiratory rate instantaneous value and a blood oxygen saturation continuous measurement value through preprocessing, inputs the respiratory rate instantaneous value and the blood oxygen saturation continuous measurement value into an intelligent analysis model composed of a deep residual network and a time convolution network, fuses a physiological hysteresis compensation coefficient to generate an offline index, and outputs a preliminary offline risk index; the data processing unit is embedded into a clinical rule base through a decision tree algorithm, generates a risk correction factor through a taboo check factor, allocates differentiation weights according to severity levels, corrects initial risk deviation and generates a comprehensive offline risk index, and the clinical rule base is continuously optimized through online learning, so that the offline risk assessment accuracy is improved; and a reliable basis is provided for clinical decision-making.
Owner:THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV +1

Method performed by access network node, method performed by core network node, access network node and core network node

An aspect of this disclosure includes a method performed by a mobile device,. The method includes receiving, from an access network node, information for configuring continuous measurements across a plurality of a Radio Resource Control (RRC) states of the mobile device, performing the continuous measurements in one or more of the plurality of the RRC states, based on the information for configuring the continuous measurements across the plurality of the RRC states of the mobile device; and,transmitting, to the access network node, respective measurement reports corresponding to the one or more of the plurality of the RRC states, the respective measurement reports including information for tracing a process of the continuous measurements across the plurality of the RRC states.
Owner:NEC CORP

Continuous detection type ore pulp concentration detection device

The invention relates to the technical field of ore pulp concentration detection, in particular to a continuous detection type ore pulp concentration detection device which comprises a detection shell, a knocking block arranged at the bottom of the detection shell, a vibration sensor arranged in the detection shell, a processing unit arranged in the detection shell, and supporting legs fixedly installed on the left side and the right side of the detection shell. A metal strap is installed on one side of each supporting leg, a buckle is arranged on each supporting leg, a plurality of clamping grooves are evenly formed in each metal strap, an electric guide rail is installed on each supporting leg, a chuck is installed on a sliding block of each electric guide rail, and a pressure sensor is installed at the bottom of each supporting leg. The pressure sensors and the electric guide rails are arranged on the supporting legs, so that an intelligent sensor system is formed, the electric guide rails automatically tension the metal strap when the metal strap is loosened, the situation that the detection shell and the pipeline cannot be stably connected due to loosening of the metal strap is avoided, and the detection precision and the use stability of equipment are effectively guaranteed.
Owner:NANJING PRECISION INT CORP

Automatic monitoring device and method for radial growth of tree trunk

The application discloses a kind of automatic monitoring device and method of tree trunk radial growth, it is related to measurement technical field, device includes: electric rotating platform, laser ranging sensor, data processing equipment and support platform;Electric rotating platform drives laser ranging sensor to rotate a week, and laser ranging sensor determines the distance of all sheltering objects to sensor in real time;Data processing equipment receives the real-time ranging data sent by laser ranging sensor;After measuring a circle, the ranging data of current ranging data set is clustered, and a plurality of ranging data clusters are obtained;Right-angle coordinate modeling and circle fitting are carried out on each ranging data cluster, to determine the position and diameter of each tree trunk;Through the diameter of tree trunk obtained by continuous measurement at different times, the radial growth rate of tree trunk is calculated. By implementing the present application, the growth rate of multiple tree trunks can be measured automatically in a non-contact form, solving the problem of contact measurement affecting tree growth and only single measurement in the prior art.
Owner:BEIJING NORMAL UNIV AT ZHUHAI

Ship water gauge measuring method, ship water gauge measuring system and medium

The invention relates to a ship water gauge measurement method, a ship water gauge measurement system and a medium, and the method comprises the steps: collecting a video of a ship entering a port water area, and carrying out the target ship recognition detection of the ship video, so as to obtain a target ship cutting image frame sequence entering a preset region; performing water gauge area positioning detection on each frame of image in the target ship cutting image frame sequence to obtain a water gauge area image of the corresponding frame, and performing multi-target element synchronous detection on each water gauge area image to obtain a multi-target element detection result of the corresponding water gauge area image; and performing fusion processing on the multi-target element detection result of each water gauge area image to obtain a ship water gauge measurement result of the corresponding target ship, and finally processing all the obtained ship water gauge measurement results to obtain a current ship water gauge measurement result of the target ship. In this way, automatic and continuous measurement of the water gauge of the ship driving into the port water area is achieved, and the ship water gauge measurement precision and accuracy are improved.
Owner:NINGBO INT LOGISTICS DEV

Visual measurement positioning system and method based on environment structured information

The invention belongs to the technical field of large-size industrial measurement positioning, and particularly relates to a visual measurement positioning system and method based on environment structured information. The system comprises an intelligent sensing hardware layer, an environment structured feature library and a core processing and control unit. Through an intelligent perception hardware layer, agreement positioning of laser coarse positioning-visual fine positioning is realized, and in combination with natural feature points and auxiliary calibration objects included in an environment structured feature library, image processing, deep learning identification, feature extraction matching and multi-view geometric calculation are carried out. Obtaining a three-dimensional coordinate of a target feature point of the to-be-detected target in the global coordinate system; and dynamic calibration and intelligent scheduling of the camera are carried out through the intelligent scheduling and calibration module, so that continuous measurement of the to-be-measured target is realized. According to the invention, the environment structured information of the measurement field is converted from background to available perception assets, and high-precision, high-efficiency and high-robustness visual measurement positioning in a large-scale dynamic industrial scene is realized.
Owner:TSINGHUA UNIVERSITY

Road friction coefficient continuous measurement method, device, computer equipment and product

The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method
Owner:QINGDAO PROD QUALITY INSPECTION INST (QINGDAO PROD QUALITY & SAFETY RISK MONITORING CENT)

Laser measurement system for size of rubber sealing element

The invention discloses a laser measurement system for the size of a rubber sealing element, and relates to the technical field of laser measurement, and the system comprises a signal collection module S11 which is used for obtaining distance measurement signal data collected by a laser distance measurement device in a continuous measurement process on the surface of the rubber sealing element, the ranging signal data comprises a scanning angle, laser emission time, laser echo receiving time and laser echo intensity; the stable screening module S12 is used for extracting signal segments with continuous angles and emission time intervals lower than a preset interval value according to scanning angles and laser emission time in the ranging signal data, and marking the signal segments as stable scanning segments; according to the method, through synchronous acquisition of distance measurement signal data, stable screening of credible signal fragments and high-precision fitting of radial dimension data, accurate reconstruction of the target contour dimension of the rubber sealing element and improvement of dimension consistency judgment capability are realized.
Owner:SHENZHEN CHENGJIACHUANG TECHNOLOGY CO LTD

Movable multi-point dimension stone paving height measuring device

The utility model discloses a movable multi-point dimension stone paving elevation measuring device, which relates to the field of road construction measurement, and is characterized in that a gradienter is arranged on a first cross rod to calibrate the levelness and the transverse gradient of a measuring trolley frame, and a range finder is arranged on a second cross rod parallel to the first cross rod to detect the distance between the second cross rod and the bottom of a support leg; the length direction of the left supporting leg and the length direction of the right supporting leg are perpendicular to the length direction of the first transverse rod, so that the distance between the left supporting leg and the ground can be rapidly measured, and the paving elevation of a plurality of rubbles on the same plane of a rubble pavement can be rapidly, simply and continuously measured and displayed; elevation data of block stone paving are measured and fed back in real time to guide workers to adjust the block stones to the designed height, and the elevation adjustment efficiency and measurement precision of the construction paving block stones are improved.
Owner:HANGZHOU ROAD & BRIDGE GRP

Subcutaneous sample sensor applicator and continuous measurement system

To provide an all-inclusive single-use continuous analyte measurement system.SOLUTION: An automatic insertion module includes: an applicator housing; a deployment button; and a preloaded insertion assembly that is fully disposed and secured within the button and partially disposed within the applicator housing when the button is in an initial mounted position in the applicator housing. A sensor module includes: a sensor lower housing releasably connected to the applicator housing; a sensor upper housing removably retained in an insertion assembly housing and spaced apart from the sensor lower housing, and an electrical sensor assembly disposed in the sensor upper housing. When an applicator system is in an initial, preloaded position, the sensor is temporarily disposed within a needle of a needle assembly.SELECTED DRAWING: Figure 1
Owner:SANVITA MEDICAL CORP

Automatic continuous measurement method for filling material fluidity

This application provides an automatic continuous measurement method for the flowability of filler materials, comprising the following steps: Step S1, connecting the continuous measurement equipment, including: a first branch and a second branch connected in parallel; a third branch simultaneously connected to the ends of the first and second branches; Step S2, powder preparation; Step S3, automatic batching and slurry preparation, including adjusting the pipeline status, the pipeline status including: slurry preparation mode; water addition mode; and slurry discharge mode; Step S4, leveling work using the automatic flowability measurement device; Step S5, automatic sampling using the automatic flowability measurement device; Step S6, automatic flowability measurement; Step S7, cleaning and resetting the test plate; Step S8, cleaning the pipeline and the continuous measurement equipment. The automatic continuous flowability measurement method involved in this application can achieve high-frequency and accurate monitoring of flowability under long-distance, high-temperature conditions, and its slurry pipeline design can significantly improve the efficiency of multi-ratio tests, meeting the needs of large-scale laboratory testing.
Owner:HENAN POLYTECHNIC UNIV

Device for monitoring physiological signals

The present invention relates to design improvements to reflective and transmissive photoplethysmography (PPG) devices to reduce motion artifacts, avoid false and non-physiological baseline drift in the signal, and improve signal quality and the accuracy of various indicators derived from the PPG. The invention can improve the accuracy of all PPG driven parameter estimations, such as continuous measurements of oxyhemoglobin saturation (SpO2), heart rate, heart rate variability, respiratory rate, blood pressure, and arterial pulse wave volume (i.e., peripheral arterial tension measurements and arterial pulse tension measurements). The invention also incorporates the ability to measure and / or track and / or compensate for the variation or absolute value of the applied pressure between the sensor and the surface of the biological subject, which is applicable to all sensors or associated probes.
Owner:COMPUMEDICS MEDICAL INNOVATION

Ship draft video tracking method based on tide level data and related equipment

The application provides a ship water gauge video tracking method based on tide level data and related equipment, and relates to the technical field of ship water gauge measurement. In the prior art, because the installation position of a shore camera device is usually fixed and the distance between the camera device and a ship is relatively short, dynamic changes can easily cause the water gauge intersection point to move out of the field of view of a video monitoring picture, thereby destroying the continuity of video observation and making continuous measurement based on video impossible. The application ensures that the water gauge intersection point with the water edge line is always in the video monitoring picture by acquiring tide level data in real time and dynamically adjusting the focal length, pitch angle and azimuth angle of the camera device, and has the advantages of realizing continuous video monitoring, improving measurement accuracy and not needing to interrupt loading and unloading operations.
Owner:TIANJIN RES INST FOR WATER TRANSPORT ENG M O T

Shaft pot lug gap detection device and method

The present application provides a kind of vertical shaft cage ear gap detection device and method, mainly include: first ranging column, first ranging sensor, second ranging column and second ranging sensor.First ranging sensor is arranged on the first ranging column, and first ranging sensor is used to measure the distance from the first ranging column to cage ear;Second ranging sensor is arranged on the second ranging column to measure the distance from the second ranging column to cage way.Through respectively to cage way and cage ear are measured, then again the measured measurement data is calculated, it is obtained whether the gap value between cage way and cage ear is in safe range, so that the result measured is more accurate, avoid the problem that the measurement result is not accurate caused by traditional direct measurement gap between cage ear and cage way, and continuous measurement is used to ranging sensor, and all time periods are continuously measured during cage operation.The problem of low measurement precision and low automation degree of traditional gap measurement technology is solved.
Owner:XIAN BOSSUN COAL MINE SAFETY TECH

Automatic vehicle tire inflation and deflation method and device based on tire temperature model

The invention relates to an automatic vehicle tire inflation and deflation method and device based on a tire temperature model, and aims to solve the problem of insufficient air pressure regulation and control caused by neglecting temperature change in the prior art. According to the method, the ideal tire pressure is dynamically calculated through the ideal gas law based on the current tire temperature, pressure and atmospheric pressure data and the tire material thermal expansion coefficient; the current air pressure is compared with the ideal air pressure in real time, and when the difference value exceeds a preset threshold value, inflation or deflation operation is automatically executed. The control module integrates a load correction function, can adjust an ideal air pressure reference according to a vehicle load, identifies a low-pressure high-rolling-resistance state by monitoring a tire temperature change rate so as to preferentially inflate, and supports fault detection when continuous measurement is abnormal. According to the invention, the self-adaptive precise regulation and control of the tire pressure are realized, the tire burst risk caused by overhigh air pressure in plateau or high-speed driving is effectively avoided, the rolling resistance is reduced, the tire wear is reduced, and the vehicle driving safety, the fuel economy and the tire durability are improved.
Owner:XIANGYANG DAAN AUTOMOBILE TEST CENT

A ventilation tunnel air volume and local heat exchange parameter testing device and a testing method thereof

The application belongs to the technical field of tunnel testing, and discloses a ventilation tunnel air volume and local heat exchange parameter testing device and a testing method thereof. The testing device comprises a sensor unit and a central processing unit. The sensor unit comprises a sensor, an acquisition module, a wireless communication module and a power module. The central processing unit comprises a wireless communication module, a data processing module, a data storage module, a touch screen and a power module. The sensor unit is installed on the same section of the tunnel according to a certain number and rule. The application has the following technical effects: long-period continuous measurement of tunnel ventilation parameters is realized; the accuracy and stability of the tunnel ventilation parameter measurement value are ensured; the tunnel use is not affected, and the vehicle is allowed to pass; and the uncertainty of temperature measurement at the high position of the tunnel wall is reduced.
Owner:POWERCHINA BEIJING ENG CORP +1

A polarized optical measurement system and method for dynamic response of a spring-mass system under high impact loads

The application discloses a kind of high impact load under spring mass system dynamic response polarized optical measurement system and method, belong to optical measurement technical field, for analog launch load and service load etc. High impact load working condition of spring mass system, by constructing birefringent interference color feature unit on the surface of the base and mass block of spring mass system, using polarization dark field to filter background stray light, cooperate with high-speed camera, so that mass block presents as high-contrast color spot, through HSV color segmentation and relative displacement calculation based on motion coordinate system, the non-contact, clear and continuous measurement of millisecond transient displacement response of mass block is realized.The application effectively fills the experimental measurement blank of high overload dynamics, eliminates the interference of the increased mass caused by the introduction of sensor in contact measurement, and provides high-fidelity visual data support for the dynamic response research of spring mass system in high dynamic environment.
Owner:NANJING UNIV OF SCI & TECH

An integrated system and method for online observation of stable isotopes of methane emission pathways in rice fields

The application discloses an integrated system and method for online observation of stable isotopes of multiple methane emission pathways in rice fields, collects methane gas emitted by plants and non-plant mediation respectively, pre-processes the gas by using a Nafion membrane drying tube and a correction algorithm, realizes continuous measurement of data by using a cavity ring-down spectrum-based analyzer, controls semi-automatic or full-automatic switching of different cavities by using a multi-channel switching and control module, and finally analyzes stable isotope characteristics of plant-mediated and non-plant-mediated emission by using a data processing module combined with a Keeling plot method, so that integrated, continuous and online observation of methane emission pathways in rice fields is realized, and real-time performance, comparability and model verification capability of data are significantly improved.
Owner:NANJING UNIV

A folding portable multifunctional measuring and lofting tool for traffic safety facility construction

The utility model discloses a kind of folding portable multifunctional surveying and setting-out tools for traffic safety facilities construction, including folding main body frame, distance measuring module, horizontal detection module, fixed-point identification module, data record storage module and control assembly;Folding main body frame contains handheld section and measuring section, and it is reduced to accommodate volume by collapsible connecting structure;Distance measuring module is equipped with roller and electronic distance measuring unit, and handheld section is equipped with mode control component to switch mode;Horizontal detection module is combined with level principle structure and alarm device;Fixed-point identification module linkage distance automatic marking and accurate identification key parts are measured;Control assembly contains antiskid and distance measuring locking component, and it is guaranteed to hold steady and fixed-point accuracy.This tool is adapted to marking line, contour mark, protruding road sign, 100-meter plate construction scene, and continuous measurement and identification can be completed in walking, improve portability, efficiency and accuracy, facilitate data traceability, meet efficient construction demand.
Owner:ZHONG ZI HUA KE TRAFFIC CONSTR TECH CO LTD

An on-line continuous monitoring system and method for i-129 and kr-85

The application discloses an I-129 and Kr-85 online continuous monitoring system and method, relates to the technical field of spent fuel reprocessing radiation monitoring, and comprises a Kr-85 sampling detection device, an input of a first I-129 sampling detection device, and an output of a Kr-85 sampling detection device; a second I-129 sampling detection device, an output of a Kr-85 sampling detection device, and an input of a flushing interface; and a flushing interface, an output of a first I-129 sampling detection device and a second I-129 sampling detection device, and an input of an electrical control box. The application controls the on-off state of solenoid valves YV2-YV5 through the electrical control box. The application can remove Kr-85 in sampling gas through air flushing and differential measurement, and can realize I-129 and Kr-85 online continuous measurement when the concentration difference between Kr-85 and I-129 is more than 10 9 times.
Owner:SHAANXI WEIFENG NUCLEAR ELECTRONICS

Micro-nano precision defect detection device based on Fourier leaf surface detection

The invention relates to a defect detection device with micro-nano precision based on Fourier leaf surface detection. The defect detection device comprises a light source, a linear gradient filter, a polaroid, a relay lens group, a plane spectroscope, a microscope objective, a rear-end lens group, a frequency spectrum surface and a camera, the linear gradient filter, the polaroid and the relay lens group are sequentially and coaxially arranged according to a horizontal light path from left to right, the plane spectroscope is arranged behind the relay lens group, a 45-degree angle is formed between the mirror surface of the plane spectroscope and the horizontal direction, the microscope objective is arranged below the plane spectroscope and is aligned with a sample to be detected, and the microscope objective is arranged on the plane spectroscope. The rear-end lens group and the spectrum surface are sequentially arranged above the plane spectroscope from bottom to top, and the camera is installed above the spectrum surface and used for detecting spectrum surface light information of the object to be detected. According to the invention, optical information including continuous measurement wave bands and continuous measurement angles can be collected simultaneously.
Owner:SUZHOU XINCHE SEMICON TECH CO LTD

A method and device for online measurement of water pollutant flux

This invention relates to the field of water environment monitoring technology and discloses an online method for measuring water pollutant flux. The method includes using a sensor array module distributed along a water body cross-section to acquire vertical flow velocity profile data, and calculating real-time flow rate by combining cross-sectional geometric parameters. Real-time concentration data of the target pollutant is acquired using either an optical sensor or a pollutant concentration sensor. Dynamic integration is performed by an embedded processor to output the pollutant flux per unit time. An adaptive calibration algorithm is introduced to correct sensor errors using historical data and environmental parameters (temperature, turbidity). This online method and equipment for measuring water pollutant flux can achieve simultaneous measurement of multiple parameters, i.e., simultaneous acquisition of flow velocity, concentration, and environmental parameters, eliminating spatiotemporal difference errors without manual intervention, and enabling continuous measurement.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI +1

Vacuum tube inner hole straightness detection device

The application discloses a vacuum tube inner hole straightness detection device and relates to the technical field of particle accelerators. The vacuum tube inner hole straightness detection device comprises the following: a plurality of pipeline supports, which are arranged along a pipeline derivation direction and form a support space above the plurality of pipeline supports; the plurality of pipeline supports are configured to support a pipeline to be detected; a mobile detection unit, which is movably arranged in the support space; and a detection assembly, which is arranged at one end of the plurality of pipeline supports and is used for detecting the mobile detection unit. The technical scheme provided by the application solves the technical problem that conventional measurement tools cannot be inserted into a micro inner diameter pipeline for full-length continuous measurement, and provides a vacuum tube inner hole straightness detection device which is simple in structure and suitable for micro pipeline working conditions.
Owner:INST OF ADVANCED SCI FACILITIES SHENZHEN

Continuous measurement reciprocating piston flowmeter

The utility model relates to a continuous measurement reciprocating type piston flowmeter, which comprises a bottom plate, a piston rod and a piston rod, the cylinder bodies are fixed on the bottom plate; piston rods of the cylinders are sealed with the corresponding cylinder bodies through spring plugs; the flow collecting block is fixed on the bottom plate and is arranged at the bottom of the cylinder body; the filling main flow channel is formed in the flow collecting block; one end of each filling branch flow channel is connected with the corresponding cylinder body, and the other end of each filling branch flow channel is connected with the filling main flow channel through the control flow channel; the output main flow channel is formed in the flow collecting block; the output branch runners are formed in the flow collecting blocks, one ends of the output branch runners are connected with the corresponding cylinder bodies, and the other ends of the output branch runners are connected with the output main runner through control runners; the stop valves are arranged at the control flow channels; the device is not affected by medium viscosity and particles, and compared with a rotary piston flowmeter, the device is simple in structure in the mode that a piston is pushed by an air cylinder to fill or output media; the design of the double piston cylinders can be used for continuous measurement and effectively relieving pressure pulsation.
Owner:CHANGZHOU GAO KAI PRECISION MACHINERY CO LTD

A device for reducing interstage differences in multispectral colorimeters

This utility model relates to the field of color measurement technology for colorimeters, and discloses a device for reducing inter-stage differences in multispectral colorimeters. The device includes a base, with a three-axis traveling mechanism fixedly connected to the upper surface of the base. A mounting bracket is fixedly connected to one side of the Z-axis mover of the three-axis traveling mechanism, and a holder for supporting the colorimeter is fixedly connected to one side of the mounting bracket. A rotating shaft is rotatably connected inside the holder, with both ends of the shaft passing through the holder. A micro motor for rotating the shaft is fixedly connected to the upper surface of the holder. This utility model, through the three-axis traveling mechanism and the slotted photoelectric sensor, achieves automatic, rapid, and continuous measurement of multiple standard color cards, completely avoiding problems such as positioning errors, inconsistent pressure, and recording errors caused by manual operation, ensuring high consistency and repeatability of the calibration process.
Owner:SHENZHEN THREENH TECH CO LTD +1

Continuous rotation angle detection sensor 360 DEG SMD

The present invention relates to a rotation angle detection sensor designed to overcome the limitations of current potentiometers in measuring angular positions. The sensor incorporates a resistive circular path and multiple collector paths or communicator tracks, enabling continuous measurements of rotation angles from 0 to 360 degrees in either the clockwise or the counterclockwise direction. The sensor achieves enhanced accuracy compared to traditional potentiometers by combining two parallel potentiometer paths. The compact design, comparable in size to existing potentiometers, eliminates dead space and offers a cost-effective alternative to non-contacting rotary position sensors. The sensor's functionality is supported by a fixed substrate or circuit board, slide contacts, spring mechanisms, and housing. Additionally, various circuit configurations and measurement methods are provided to process the output signals and determine the rotation angles accurately. Overall, this innovation presents a versatile and efficient solution for angle detection in a compact form.
Owner:GALVIN SAMSON FOX

Following type contact line geometric parameter measuring method and device

The invention discloses a following type contact line geometric parameter measuring method and device, and belongs to the technical field of railway detection, and the method mainly comprises the steps: S1, collecting an image containing a contact line through a measuring head; s2, segmenting the form of a contact line in the image, and extracting a contact line region; s3, based on the contact line area, calculating a pixel center line of the contact line; s4, calculating a vertical physical distance between the pixel center line of the contact line and the preset reference pixel point; s5, calculating a target rotation angle of the measuring head according to the vertical physical distance; s6, driving the measuring head to rotate to the target rotation angle, and measuring and calculating contact line geometric parameters of the current measuring point; and S7, repeating the steps S1 to S6, and completing continuous measurement of the geometric parameters of the contact line of the to-be-measured area. According to the invention, automatic, continuous and high-precision tracking measurement of the moving contact line can be realized.
Owner:LINGSHI TECH CHENGDU CO LTD

A method for measuring the direction of movement of flagellate algae under flow conditions

The application discloses a kind of methods for measuring the movement direction of flagellum algae under flow conditions, the method comprises the following steps: step 1, image sequence acquisition and processing;Step 2, cell image cropping alignment;Step 3, cell image pre-processing;Step 4, create fan ring detection area;Step 5, construct timing frame;Step 6, time sequence difference feature calculation;Step 7, confidence calculation and movement direction determination.The method for measuring the movement direction of flagellum algae under flow conditions disclosed in the application overcomes the technical problems that cannot be identified due to poor imaging quality of flagellum and loss of instantaneous information in moving water environment, and realizes high-precision, automated and continuous measurement of the movement direction of flagellum algae through time sequence dynamic feature analysis and biological motion characteristic determination.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Soil body heat flux profile determination method based on AH-DTS technology

The invention discloses a soil body heat flux profile determination method based on an AH-DTS technology, and the method comprises the steps: determining a reference depth at which the soil body temperature is stable along with time through measuring the soil body temperature at different depths and different moments and the corresponding volume water content; calculating the volume heat capacity of the soil body, layering the soil body above the reference depth, and obtaining the average temperature and heat capacity of each layer; and calculating the single-layer heat storage amount and accumulating to obtain the total heat storage amount, and finally obtaining the heat flux profile of the soil body at any target depth. The method comprises the steps of reference depth determination, soil volume heat capacity calculation, soil layer equal division and layered heat storage capacity calculation, heat storage capacity accumulation and heat flux profile solving. The method is easy and convenient to operate and high in spatial resolution, the influence of soil moisture content change on the heat flux can be effectively represented, in-situ continuous measurement of the soil heat flux profile can be achieved, and a reliable technical means is provided for research on the soil moisture and heat transfer law.
Owner:HOHAI UNIV