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117results about How to "Guaranteed monitoring accuracy" patented technology
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Real-time dynamic 3D water balance monitoring system of power plant and working method of system
InactiveCN105549557AEffective monitoringEfficient managementTotal factory controlProgramme total factory controlWater balanceApplication module
The invention relates to a real-time dynamic 3D water balance monitoring system of a power plant and a working method of the system. The system is characterized by comprising a data collection module, a data transmission module, a data storage module, a monitoring center and a data analysis and application module, wherein the data collection module collects flow data, and the data transmission module returns data collected by the data collection module in real time. Water volume data of different collection points is collected by the data collection module, transmitted to the data storage module by the data transmission module, and further transmitted to the data analysis and application module by the data storage module. The system and method have the advantages that the relation between water volume change and generating load is found via data analysis, the imbalance rate is calculated, and thus, scientific basis is provided for planning water-saving measures of the power plant.
Owner:TIANJIN AOLANG NEW ENERGY RESOURCES & TECH CORP
Positioning method for Beidou short baseline single frequency single epoch solution
ActiveCN109932735AGuaranteed monitoring accuracyReduce monitoring costsUsing electrical meansElectrical/magnetic solid deformation measurementDynamic modelsSignal-to-quantization-noise ratio
The invention discloses a positioning method for Beidou short baseline single frequency single epoch solution. The method comprises steps of (1) Beidou single frequency pseudorange single point positioning, (2) data preprocessing, (3) establishment of a Kalman filter precision n-dimension dynamic model based on prior historical data and consideration of influences of a signal-to-noise ratio and asatellite elevation angle on an observation value, (4) model initialization, (5) Beidou single-frequency part ambiguity estimation to obtain a fixed value of each hierarchical ambiguity, (6) cycle-slip epoch-by-epoch detection in combination of the single-frequency ambiguity fixed value and an updating value, and (7) baseline vector calculation and coordinate covariance matrix updating based on the fixed ambiguity, and back substitution to a carrier phase observation equation after the ambiguity is fixed to obtain a baseline vector. The method can automatically eliminate the influences of tropospheric errors and multipath errors in real time, and realize accurate fixation of Beidou single frequency ambiguity. While the real-time performance and the precision of monitoring are ensured, themonitoring cost is greatly reduced, and promotion and application of the Beidou positioning technology is facilitated.
Owner:CHINA RAILWAY DESIGN GRP CO LTD
Ocean spilt oil film thickness hyperspectral remote sensing estimation method based on parameter lookup table
InactiveCN102997856AMeet the needs of emergency monitoringEstimation is objective and efficientUsing optical meansPerformance indexKnowledge Field
The invention relates to an ocean spilt oil film thickness hyperspectral remote sensing estimation method based on a parameter lookup table and belongs to the field of ocean environment monitoring research. The method includes the steps of obtaining and pre-processing standard oil film thickness continuous change hyperspectral data by designing a simulation experiment; obtaining and pre-processing ocean spilt oil satellite remote sensing data; resampling a standard oil film spectrum based on a satellite sensor performance index; normalizing spectral reflectivity; building an oil film thickness optical calculating model; building an attenuation parameter lookup table; normalizing the reflectivity of satellite data and conducting mask treatment; inquiring and building an optimal wave band of the satellite data and relevant parameters; and calculating the oil film thickness in the satellite data through the parameter lookup table and the optical model. Compared with a traditional observation means, by means of the ocean spilt oil film thickness hyperspectral remote sensing estimation method, field workload is less, the thickness of the spilt oil film can be quantized, the thickness of an oil film in a spilt oil area can be calculated without entering an ocean spilt oil pollution area, and requirements of ocean split oil emergency monitoring and evaluation can be met.
Owner:NANJING UNIV
Groundwater supply pipe network water leakage detecting method
An underground water supply network water leakage detecting method utilizes a multi-probe dependence tester, and probes of the tester are installed on a pipe network to collect the sound wave data. The method comprises the following steps: a. the probes are installed a pipe network valve, a hydrant or a water meter at internals, and the probes are closely contacted with the pipe network valve, the hydrant or the water meter; b. the sound wave data is collected; c. whether water leakage fault occurs is judged by analyzing the data. By utilizing function relevant principle, the method can calculate the position of water leakage point just by collecting the sound wave data at two points, thus having high locating efficiency; regional water leakage general investigation can be completed by testing for once, the data is easy to store, and the accident analysis can be conveniently carried out; as the data can be automatically collected, recorded and processed, the working intensity and anthropogenic influence can be greatly reduced.
Owner:BAODING JINDI UNDERGROUND PIPELINE DETECTION ENG
Overall measurement system calibration method based on vision calibration and coordinate transformation
InactiveCN105067011AMeet the precision requirementsGuaranteed monitoring accuracyMeasurement devicesComputer graphics (images)Engineering
The invention provides an overall measurement system calibration method based on vision calibration and coordinate transformation. The overall measurement system calibration method comprises the following steps: calibrating internal parameters and external parameters of a camera; performing hand-eye calibration on the relationship Hrc between a turntable coordinate system and a camera coordinate system; calibrating the transformation relationship Hpr between the turntable coordinate system and a place coordinate system or the transformation relationship Hrg between the turntable coordinate system and a ground coordinate system; on the basis of the acquisition of the Hrg, the Hpr and the Hrc, unifying the four coordinate systems of a camera, a turntable, a place and the ground; controlling the turntable to shoot a target, and mapping related information about the target to a specific coordinate system by combining the information about turntable azimuth, pitch angle and lens focal length, thus realizing a scheduled mask. An overall automatic tracking and measurement system can be calibrated by adopting the method; during the tracking and measuring process, the measurement precision of the system is ensured, and effective guarantee is provided for flight safety.
Owner:SHENYANG AIRCRAFT CORP
Fuel cell voltage monitoring system and its method
ActiveCN101191822AGuaranteed monitoring accuracyLittle impact on accuracyFuel cell auxillariesElectrical testingCommunication interfaceFuel cells
The invention discloses a system for monitoring the voltage of a fuel battery, comprising a switch network unit, a data acquisition unit, an isolated communication interface unit and a main controller. The fuel battery is divided into a plurality of fuel battery sets; one fuel battery set together with the switch network unit, the data acquisition unit, the control unit and the isolated communication interface unit forms a voltage monitor module. The single batteries of the fuel battery unit is connected to the switch network unit which gates the single batteries one by one and transmit the a voltage signal to the data acquisition unit; the output end of the data acquisition unit is connected to the control unit which provides a voltage signal to the main controller through the isolated communication interface unit; the main controller provides a control signal to the control unit through the isolated communication interface unit to uniquely gate the monitor module. The invention reduces the monitoring cost and ensures effective monitor of the voltage of the fuel battery.
Owner:BYD CO LTD
Deformation monitoring coordinate reference establishment method and device based on three dimensional laser scanning
The invention provides a deformation monitoring coordinate reference establishment method and device based on three dimensional laser scanning. The method comprises: utilizing a three dimensional laser scanner to scan a deformable body and surrounding buildings to acquire the three dimensional point cloud data; utilizing the three dimensional point cloud data to establish three dimensional models for the deformable body and the surrounding buildings; fragmenting the three dimensional point cloud data in the three dimensional models according to the space coplanarity to acquire a plurality of point cloud plane fragments; selecting two point cloud plane fragments which are mutually perpendicular to each other and accord with the preset condition among the plurality of point cloud plane fragments; selecting a horizontal plane, wherein the horizontal plane is intersected with the first vertical point cloud plane fragment and the second point cloud plane fragment; and according to the intersecting lines between the first vertical point cloud plane fragment and the second point cloud plane fragment and the horizontal plane, establishing a deformation monitoring coordinate system. The deformation monitoring coordinate reference establishment method can measure the three dimensional point cloud data of the deformable body through the three dimensional laser scanner, and then can establish a unified and stable deformation monitoring coordinate system as the monitoring reference so as to guarantee that the deformation measurement data through subsequent calculation is accurate and reliable.
Owner:AVIC GEOTECHN ENG INST
Micro intermediate infrared gas concentration monitoring method and device
InactiveCN103674883AIncrease reflectionGuaranteed monitoring accuracyMaterial analysis by optical meansDigital signal processingMicro structure
The invention provides a micro intermediate infrared gas concentration monitoring method and a micro intermediate infrared gas concentration monitoring device. According to the device, a double-wavelength infrared monitoring theory is adopted, and a reasonable micro structure design is supplemented, so that a micro focal-point-free multi-reflection gas chamber is formed; a golden reflection film is plated on the inner wall of the gas chamber to enhance the reflection of infrared light, so that an infrared detector can acquire enough information for reflecting the concentration of detected gas in a tiny space. Filtration and waterproof prevention are executed through a structure consisting of a filter net and a waterproof ventilation film; the monitoring precision is guaranteed, and the gas chamber and an optical element can be protected. The device supplies a data output pin and an alarm output pin which are used for externally outputting a gas concentration digital signal and an open collector alarm signal; the device can meet the requirements for the gas concentration alarm of dangerous places. The device has digital signal processing and temperature compensation functions, has the advantages of high monitoring precision, stability, reliability and the like and can meet a requirement on the monitoring of the gas concentration in an intermediate infrared absorption region.
Owner:UNIV OF SCI & TECH OF CHINA
Method for observing water level variation based on signal to noise ratio data of Beidou navigation positioning system
InactiveCN107796484ALow costGuaranteed monitoring accuracyMachines/enginesSatellite radio beaconingSignal-to-noise ratio (imaging)Observation data
The invention discloses a method for observing water level variation based on signal to noise ratio data of a Beidou navigation positioning system. The method comprises: using a Beidou receiver to obtain observation data and navigation data; selecting a MEO satellite of the Beidou system, based on the navigation data and coordinates of an observation station, calculating an elevating angle and anazimuth angle of the satellite; based on observation data of the Beidou system, extracting signal to noise ratio data of the MEO satellite; according to a water surface reflection environment of the observation station, selecting data meeting conditions from the extracted signal to noise ratio data; according to rising and falling states of the satellite and time duration of the data, dividing thesignal to noise ratio data into arc segments; aimed at each piece of arc segment, removing a trend term of the data, and obtaining a signal to noise ratio residual sequence; using a Lomb-Scargle spectral method to analyze the detrended signal to noise ratio data; and according to frequency corresponding to maximum spectrum density, calculating water level. The invention provides a new method forobserving water level variations using the signal to noise ratio of a Beidou navigation positioning system, and a result consistent with a result of a conventional water level indicator is obtained.
Owner:CENT SOUTH UNIV
Laser radar multipoint distance measurement system on basis of diffraction optical components
ActiveCN106353766AGuaranteed normal transmissionEnsure reasonable arrangementElectromagnetic wave reradiationRadarLight beam
The invention relates to the technical field of machinery, and discloses a laser radar multipoint distance measurement system on the basis of diffraction optical components. The laser radar multipoint distance measurement system comprises a laser signal transmitting device, a laser signal receiving device and a signal processing system. The signal processing system is connected with the laser signal transmitting device and the laser signal receiving device, the laser signal transmitting device comprises a pulse laser device, and a collimation system, a beam expansion system, a diffraction grating and a half-transmitting and half-reflecting mirror are sequentially arranged in a light emitting direction of the pulse laser device; the light emitting direction of the pulse laser device is positioned in a transmitting direction of the half-transmitting and half-reflecting mirror, and the laser signal receiving device is arranged in a reflecting direction of the half-transmitting and half-reflecting mirror. The laser radar multipoint distance measurement system has the advantages that laser light transmitted by the pulse laser device can be divided into a plurality of light beams at equal angles or unequal angles by the diffraction grating, and the light beams can be transmitted via the half-transmitting and half-reflecting mirror, then face media at to-be-measured distances, can be reflected by the media at the to-be-measured distances and then can be reflected to the laser signal receiving device by the half-transmitting and half-reflecting mirror.
Owner:SHANGHAI NOVA OPTICS TECH
Surface settlement observation method based on tilt photography measurement of drone
InactiveCN110455256AImprove efficiencyObservation speedHeight/levelling measurementPicture interpretationThree dimensional modelRoute planning
The present invention discloses a surface settlement observation method based on tilt imaging measurement of a drone, to adapt to requirements of surface subsidence monitoring. The method includes thefollowing steps: route planning, layout and measurement of image control points, obtaining of oblique images, establishment of a three-dimensional model of a real view of a measurement area, data collection and making a data difference for subsidence monitoring. In the present invention, an oblique photogrammetry technology is used to obtain images of a collapsed surface in various angles, a real-view three-dimensional model and an orthophoto image of the subsidence zone with spatial information are established by using aerial triangulation measurement and measurement of the image control points, the real-view three-dimensional model is used to collect data of ground points, and a difference is made for the data of the ground points at a same position at different times to obtain a subsidence value for subsidence monitoring. The method is easy to operate, and compared with the traditional subsidence monitoring method, the method has a wide monitoring range and high operation efficiency, and can obtain a more comprehensive monitoring result.
Owner:XIAN UNIV OF SCI & TECH
Converting station tubular busbar on-line monitoring system
InactiveCN103090908AIntegrity monitoring onlineImmune to electromagnetic interferenceThermometers using physical/chemical changesUsing optical meansBusbarDisplay device
The invention discloses a converting station tubular busbar on-line monitoring system. A sensor chamber is fixedly installed at one end of a tubular busbar. A passive sensor head is fixed inside the sensor chamber and connected with a master control central processing unit (CPU) in an electric mode through optical cable. A semi-conductor crystal is fixed on the tubular busbar. Two optical fibers are distributed on two sides of the semi-conductor crystal in a bijective mode. A solar cell panel and a storage cell are respectively connected with a power supply module in an electric mode. The power supply module, a photoelectric detector, a video camera and the master control CPU are respectively connected with a data transmission module in an electric mode through an operating condition acquisition module. A data receiving module and a data processing module are respectively connected with a data storage module and a displayer in an electric mode. The converting station tubular busbar on-line monitoring system has the advantages that displacement and temperature of the tubular busbar and integrity of a brace china bottle can be monitored in an on-line mode, monitoring accuracy can be effectively ensured, and real-time monitoring of the integral system for 24 hours can be achieved.
Owner:STATE GRID CORP OF CHINA +1
Online monitoring method for energy efficiency of spindle system during service process of numerically controlled machine tool
ActiveCN108614522ARealize online monitoringEasy to operateProgramme controlComputer controlElectricityNumerical control
The invention discloses an online monitoring method for the energy efficiency of a spindle system during a service process of a numerically controlled machine tool. According to the method, a spindlesystem energy efficiency model of a numerically controlled machine tool service process for online monitoring is constructed based on a spindle system torque balance equation of a numerically controlled machine tool service process. On the basis of the analysis of electrical parameter variation characteristics of the cutting condition of the machine tool service process, an automatic determinationmethod of a cutting starting point and a cutting end point of the cutting period of the numerically controlled machine tool service process is proposed; and then an online monitoring method of the energy efficiency of the spindle system of the numerically controlled machine tool service process is put forward finally. With the method disclosed by the invention, the support is provided for researches of improving the energy efficiency of the spindle system of the machine tool processing process and optimizing the cutting parameters in an energy-saving manner. The method has the broad application prospects.
Owner:CHONGQING UNIV OF TECH
Optical module shell temperature monitoring method and device
The invention discloses an optical module shell temperature monitoring method and device for improving the monitoring accuracy of the shell temperature of an optical module in each temperature range. The method comprises a step of obtaining a driving chip temperature sampling value when a condition that a first output value is in a low temperature threshold interval is determined according to a first output value of optical module shell temperature, a step of determining the second output value of the optical module shell temperature according to the linear relationship satisfied by the driving chip temperature sampling value and the optical module shell temperature, a step of obtaining a control chip temperature sampling value when a condition that the second output value is in a high temperature threshold interval is determined according to the second output value of the optical module shell temperature, and a step of determining the third output value of the optical module shell temperature according to the linear relationship satisfied by the control chip temperature sampling value and the optical module shell temperature. Different temperature sampling sources are selected to monitor the optical module shell temperature in different temperature ranges, and the monitoring accuracy of the optical module shell temperature in each temperature range is improved.
Owner:HISENSE BROADBAND MULTIMEDIA TECH
Air quality monitoring sensor precision guarantee equipment
ActiveCN104964714ASolve the technical problems of poor monitoring accuracy and inaccurate monitoringGuaranteed monitoringMeasurement apparatus componentsMaterial analysisEngineeringControl switch
The invention discloses air quality monitoring sensor precision guarantee equipment. The equipment comprises a shell and a cylinder. One end of a rotation rod passes through an upper surface of the shell and is connected to a trigger rod in the shell. The other end of the rotation rod is connected to a wind measurement plate located above the shell. The trigger rod can rotate about a fixing nail. One end of the trigger rod is connected to an inner wall of the shell through a spring. Two sides of the other end of the trigger rod are provided with buttons of a control switch. A greenhouse gas monitoring sensor is installed on a fixing plate. A motor is connected to a storage battery through a lead and the control switch. A pulley is inlaid into a slideway so that the cylinder and the fixing plate are connected slidingly. The cylinder is connected to a rotation shaft of the motor through a stay wire. The design of the equipment is reasonable. When it is windy, sealing treatment is performed on the greenhouse gas monitoring sensor in the equipment. Monitoring precision is guaranteed and a technology effect that monitoring is accurate is achieved.
Owner:CHENGDU HANKANG INFORMATION IND
Intelligent track type freely-combined washing line
InactiveCN106544808AGuaranteed that spins do not affect each otherFlexible adjustmentWashing apparatusTextiles and paperElectric machineProcess engineering
The invention relates to the field of machinery, and in particular relates to a washing line. The intelligent track type freely-combined washing line comprises a washing unit having at least two washing cabins, wherein a feed hole is formed in the right side of each washing cabin, a discharge hole is formed in the left side of each washing cabin, the discharge hole is wider than the feed hole, and the at least two washing cabins are mutually connected by inserting connection of the discharge holes and the feed holes; a motor is arranged on one side of the washing cabins, and a rotation shaft of the motor is connected with the washing cabins via a transmission mechanism. According to the intelligent track type freely-combined washing line provided by the invention, the discharge holes and the feed holes of the washing cabins are connected in an inserting manner, so that respective rotation of the washing cabins without mutual influence is ensured, the washing cabins can be responsible for different functions, such as soaking, prewashing, fine washing, rinsing and smoothening, the at least two washing cabins can be freely combined to form combinations with different functions, and achieve different washing purposes, and thus each washing cabin can execute any washing function in a standalone manner, and can also be combined with the adjacent washing cabin to complete a washing process. Therefore, flexible adjustment of the washing process is achieved.
Owner:颉保洗涤机械(上海)有限公司
Dual-polarization radar
ActiveCN110146892AReduce problem sizeReduce complexityRadio wave reradiation/reflectionICT adaptationRadarRadio frequency
Owner:HUNAN EASTONE WASHON TECH CO LTD
Galvanometer imaging laser telemeter and gas concentration information imaging method
ActiveCN111929275AEffective early warningImprove detection efficiencyColor/spectral properties measurementsOptical elementsSignal processing circuitsGalvanometer
The invention provides a galvanometer imaging laser telemeter and a gas concentration information imaging method, relates to the technical field of measurement by using optical means, and can be usedfor integrating live-action information and concentration information. The laser telemeter comprises a camera, a driving circuit, a laser, a collimating lens, a galvanometer, an optical receiving system, a signal processing circuit and a display system, the driving circuit controls the laser to emit laser, the laser penetrates through the collimating lens, is reflected by the galvanometer and penetrates through gas to reach the surface of an object, the optical receiving system receives the laser diffusely reflected by the surface of the object, the signal processing circuit converts the laserinto concentration information, and the display system displays the image information and the concentration information of the camera in an overlapped mode. The laser telemeter can draw an observed gas mass shape by utilizing concentration information in each pixel point, and in addition, the refresh speed of a gas concentration picture can be improved by utilizing a difference calculation method. The telemeter and the imaging method also have the advantages of high precision, vividness, intuitiveness, high refreshing speed and the like.
Owner:青岛澳瑞德电子有限公司
IGBT module internal defect monitoring method and circuit based on gate charge change
ActiveCN112114237AHigh precisionGuaranteed monitoring accuracySemiconductor operation lifetime testingHemt circuitsElectric signal
The invention discloses an IGBT module internal defect monitoring method and circuit based on gate charge change. The method is based on the characteristic that a gate electric signal of an IGBT module in a switching process is affected by the internal parameter change of the IGBT module due to the aging of the IGBT module; a health state of the IGBT module at the current period is evaluated by monitoring a gate pole electric signal of the IGBT module in the switching process; specifically, the gate charge of the IGBT module is taken as a monitoring object, and the internal defect condition ofthe current IGBT module is evaluated by monitoring the change of the gate charge of the IGBT module in the operation process; and the gate charge information obtained in a plurality of switching periods is continuously accumulated to amplify defects in the IGBT module. According to the method, the IGBT module can be conveniently monitored under the condition that the IGBT module is not disassembled, meanwhile, it can be ensured that the health state of the IGBT module can be accurately evaluated under normal work of the IGBT module, and reliability of the module and the system is improved.
Owner:CHONGQING UNIV
Shaft liquid level monitoring device
The invention relates to a shaft liquid level monitoring device. The shaft liquid level monitoring device comprises a microphone used for receiving reflected waves, and further comprises a shaft sleeve joint, an air inlet electromagnetic valve, a middle air chamber and a pressure relief electromagnetic valve which are connected in sequence, and the pressure relief electromagnetic valve is providedwith a pressure relief valve outlet used for being communicated with external atmosphere or a gas treatment device. The shaft liquid level monitoring device further comprises an air inlet side air pressure sensor, an air outlet side air pressure sensor and a controller, the air inlet side air pressure sensor and the air outlet side air pressure sensor are in signal connection with the controller,and the air inlet electromagnetic valve and the pressure relief electromagnetic valve are in control connection with the controller. Opening and closing of the air inlet electromagnetic valve and thepressure relief electromagnetic valve are separately controlled through the controller, then the pressure of the middle air chamber is controlled, the pressure difference between the air inlet side and the air outlet side of the air inlet electromagnetic valve can be accurately controlled to be a set pressure difference, the set pressure difference can correspond to sound wave signals with a highsignal-to-noise ratio, and the liquid level monitoring precision is guaranteed.
Owner:CHINA PETROLEUM & CHEM CORP +1
Water quality on-line monitor for river regulation
ActiveCN112924639ARealize the water fetching operationAchieve entryGeneral water supply conservationWithdrawing sample devicesRiver routingRiver regulation
The invention discloses a water quality on-line monitor for river regulation. The water quality on-line monitor comprises a monitoring box used for installing all assemblies, a top cover is arranged at an opening in the top of the monitoring box, a controller is arranged on the lower surface of the top cover, the controller is connected with an electric power storage assembly, a sampler, a monitor and a driver through wires, a cleaning device is arranged in the monitoring box, a set of floating device is arranged on the bottom surface of the monitoring box, a set of dredging device is arranged on the outer wall of the monitoring box, and a set of driver is arranged at the tail of the monitoring box, water taking operation can be well carried out through the sampler, meanwhile, the whole device is well self-protected, the service life of the whole device is prolonged, and the sampling process is controlled. Accurate monitoring operation of water quality is facilitated. The monitoring precision of the sensor group is ensured through the monitor, the corrosion of the sensor group caused by the fact that a water sample is attached to the sensor group for a long time is prevented, and the service life of the equipment is prolonged.
Owner:南京格锐斯环境科技有限公司
Device and method for monitoring property and biological activity of ground source heat pump surrounding soil
InactiveCN106771085AControl errorReduce the impact of disturbanceEarth material testingControl systemComputer module
The invention discloses a device and a method for monitoring property and biological activity of ground source heat pump surrounding soil. The device comprises cable conductors and an outer sleeve, wherein a soil water content monitoring module, a soil temperature monitoring module and a soil biological activity detection module are arranged in the outer sleeve; and the soil water content monitoring module, the soil temperature monitoring module and the soil biological activity detection module are connected with an outside control system through the cable conductors. According to the device disclosed by the invention, the soil water content is collected by the soil water content monitoring module, the soil temperature is collected by the soil temperature monitoring module, and the soil biological activity is collected by the soil biological activity detection module. The device disclosed by the invention is capable of respectively monitoring the temperature, soil water content and biological activity of the ground source heat pump surrounding soil in real time, evaluating the performance of the ground source heat pump surrounding soil according to the three indexes and further researching a solution for improving the operating performance of the ground source heat pump.
Owner:WUHAN UNIV
Compressive strain monitoring sensor for road structure, as well as manufacturing method and device
ActiveCN113021711ARealize easy preparationEasy to manufactureForce measurementElectrical/magnetic solid deformation measurementRoad surfaceMechanical engineering
The invention provides a compressive strain monitoring sensor for a road structure, as well as a manufacturing method and device. The manufacturing method comprises the following steps: an integrated forming mold is prepared, a conductive composite smart material is injected, and a conductive core element is obtained after forming and curing; the conductive core element is assembled to form a pouring mold, a high-temperature-resistant material is poured, and a high-temperature-resistant conductive core element is obtained after forming and curing; and the high-temperature-resistant conductive core element is assembled into a compressive strain sensor packaging mold, a packaging material is injected, and the compressive strain monitoring sensor for the road structure is obtained after molding and curing. According to the manufacturing device and method for the micro compressive strain and compressive stress monitoring sensor, when the sensor is manufactured, the sensor manufacturing process is simple, manufacturing materials are easy to obtain, and simple preparation for the sensor core element, a conductive circuit and the packaging material can be effectively realized; and the rigidity is matched with that of a pavement structure layer, and long service life and high survival rate are achieved.
Owner:SHANDONG UNIV
Wireless remote control type handicapped person elevator
The invention relates to an elevator help calling device. A wireless remote control type handicapped person elevator comprises an elevator control system connected with a wireless receiving module. The receiving range of the wireless receiving module ranges from 0 m to 2 m. The wireless remote control type handicapped person elevator further comprises a wearable wireless controller. The wearable wireless controller comprises a wireless transmitting module matched with the wireless receiving module. The wearable wireless controller is provided with an ascending button, a descending button, a door closing button and a help calling button which are used for controlling the elevator. Through the wireless remote control type handicapped person elevator, a better using environment can be provided for handicapped persons through the wearable wireless controller, and closing of an elevator door can be achieved without approaching buttons in the elevator. Compared with the fact that after a door of a traditional elevator is opened for a period of time, the door can be automatically closed, the handicapped persons can achieve elevator door closing through the door closing button, the situation that when the handicapped persons enter the elevator, the handicapped persons are pinched by the elevator due to the slow action is prevented, and danger is reduced.
Owner:上海富士电梯有限公司
Lightning arrester online monitoring device and method
InactiveCN110031713AReduce power consumptionEnsure monitoring accuracyTransmission systemsElectrical testingPower flowComputer module
The invention discloses a lightning arrester online monitoring device and method. The device comprises a voltage-limiting sampling unit, an energy storage unit, a leakage current sampling, an over-voltage monitoring unit, a core processing module and a wireless transceiving module; the energy storage unit can collect and store the leakage current input by the voltage-limiting sampling unit when the lightning arrester is in normal work, thereby supplying power for the leakage current sampling unit, the over-voltage monitoring unit, the wireless transceiving module and the core processing modulewithout using the external power supply and laying a communication cable; the cost is saved under the condition of guaranteeing the monitoring accuracy and precision, and the power consumption is reduced; the communication function can be accomplished without being limited by the external condition; secondly, an aerial wakeup mode is improved by adding a query period field of a sender in a lead code and the inserted address information and channel information, and the power consumption of the lightning arrester monitoring device is further reduced.
Owner:XIAN SHENDIAN ELECTRONICS
Installation device for osmometer of hydraulic pressure monitoring system for tunnel lining and installation method
PendingCN109681240AGuaranteed working environmentRealize replacement and maintenanceMining devicesUnderground chambersMonitoring systemWorking environment
The invention discloses an installation device for an osmometer of a hydraulic pressure monitoring system for a tunnel lining. The installation device comprises a pipeline pre-buried in tunnel concrete, the two ends of the pipeline are higher than the middle part of the pipeline, one end of the pipeline is communicated with a longitudinal blind pipe located at the back of the lining, the other endof the pipeline extends out from a tunnel inverted arch to a tunnel space, the middle part of the pipeline is located below a gutter, the end, extending out to the tunnel space, of the pipeline is used for installing the osmometer, and the osmometer is enabled to be communicated with the back of the tunnel lining. The invention further provides an installation method based on the installation device. The installation device for the osmometer of the hydraulic pressure monitoring system for the tunnel lining and the installation method aim to solve problem that in the prior art, in the aspect of the installation of an osmometer, the hydraulic pressure monitoring precision cannot meet the requirements. According to the installation device and the installation method, seepage water is alwaysleft in the adopted pipeline, so that the working environment of the osmometer can meet the requirements, and therefore the detection precision of the osmometer is guaranteed; and meanwhile, the device bypasses an inverted arch side wall formwork, the phenomenon that the device penetrates through a steel formwork in the installation process can be avoided, and the construction is convenient.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD
An optical power monitoring circuit and method
ActiveCN111817781AGuaranteed monitoring accuracyReduce Design ComplexityElectromagnetic transmissionPhotometry electrical circuitsOptical powerHemt circuits
The embodiment of the invention provides an optical power monitoring circuit and method. The optical power monitoring circuit comprises a driving device, a light emitting device and a processing device, wherein the driving device is used for driving the light-emitting device to emit light, the processing device is used for obtaining node current or node voltage, the node current represents the current of a node between the light-emitting device and the driving device, and the node voltage represents the voltage of the node between the light-emitting device and the driving device; and the processing device is used for determining the optical power of the light emitting device based on the node current or the node voltage. Thus, the optical power of the light-emitting device in the optical power monitoring circuit can be monitored without adding a photodiode and a bypass gold wire bonding wire thereof, and the design complexity and the manufacturing cost of the optical power monitoring circuit are effectively reduced.
Owner:GUANGXUN SCI & TECH WUHAN +1
Gas density relay
PendingCN111326369AImprove motion stabilityAvoid the problem of swaying and reducing monitoring accuracyElectric switchesElectric equipmentElectrical equipment
The invention discloses a gas density relay. The gas density relay comprises an outer shell, a corrugated pipe, a sealing piece, a sealing partition plate, a plugging corrugated pipe, a signal triggering mechanism and a contact microswitch. An inner cavity of the outer shell or an inner cavity of the corrugated pipe is communicated with an air chamber of electrical equipment, and a compensation gas is filled in the other inner cavity; and when the gas density value in the gas chamber of the electrical equipment is changed, a pressure difference is generated between an inner cavity of the outershell and an inner cavity of the corrugated pipe, under the action of pressure, the corrugated pipe can expand or be compressed, the corrugated pipe moves up and down to drive the trigger rod connected with the corrugated pipe to move up and down, the trigger rod triggers the contact microswitch when moving, the contact microswitch generates corresponding signals, and the function of the gas density relay is achieved. And when the gas density value returns to normal, the contact microswitch is reset. The trigger rod is slidably connected with the sealing partition plate and extends out of thesealing partition plate, the motion stability of the trigger rod is improved, and the problem that the monitoring precision is reduced due to swing of the trigger rod is avoided.
Owner:SHANGHAI ROYE ELECTRICAL CO LTD
A Hyperspectral Remote Sensing Estimation Method for Marine Oil Spill Film Thickness Based on Parameter Lookup Table
Owner:NANJING UNIV
Goaf information acquisition device protection structure and goaf information acquisition method
PendingCN113124093AReduce shockReduce vibrationMining devicesSpringsMining engineeringStructural engineering
The invention provides a goaf information acquisition device protection structure and a goaf information acquisition method, relates to the technical field of mining engineering, and solves the problem of impact or vibration damage to an information acquisition sensor caused by goaf caving. The goaf information acquisition device protection structure comprises a protection beam, a damping box, an outer shell, a waterproof inner shell, a buffer layer and a base, wherein the protection beam is fixed above the outer shell through the damping box; the top of the outer shell is arched; a supporting part and a compression-resistant bulge are fixed on the outer surface of the outer shell; the waterproof inner shell is arranged in the outer shell; the base is arranged below the outer shell; a clamping groove is formed in the base; the buffer layer is arranged between the base and the outer shell; and an information acquisition device is fixedly connected with the waterproof inner shell. The structure is used for protecting the goaf information acquisition device, and goaf information is accurately acquired in time. The structure has a multi-layer protection effect when being impacted, can effectively relieve the impact vibration influence, has a waterproof effect, and ensures effective acquisition of the goaf information.
Owner:SHANDONG UNIV OF SCI & TECH
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