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196results about How to "Reduce monitoring costs" patented technology

Tunnel construction informatization dynamic monitoring system and monitoring method thereof

The invention discloses a tunnel construction informatization dynamic monitoring system and a monitoring method thereof. The system comprises an industrial personal computer, a PLC (programmable logic controller) wireless controller, a high-configuration digital camera, a deformation monitoring sensitization part, digital display acquisition equipment, wireless transmission equipment and a dynamic design feedback device. The method includes: 1), controlling commands to be transmitted to the PLC wireless controller by a computer control main station and controlling the digital camera and the digital display acquisition equipment; 2), acquiring internal force monitoring data by the aid of the digital display acquisition equipment; and acquiring a deformation monitoring image via the deformation monitoring sensitization part by the digital camera; 3), transmitting a monitored value to the computer control main station by the aid of the wireless transmission equipment; 4), analyzing results by the computer control main station via a real-time analysis module; and 5), transmitting the analyzed results to the dynamic design feedback device, analyzing relative difference of the really monitored value and a standard value, and early warming in real time by an early warning module. The tunnel construction informatization dynamic monitoring system is scientific, safe and practical, the method is convenient, instant, fast and effective, and safety problems in construction monitoring of tunnels are avoided.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

System and method for monitoring seawater intrusion-ground water level-soil salinization in real time

The invention relates to a system and a method for monitoring seawater intrusion-ground water level-soil salinization in real time. The system comprises an upper computer, an acquisition and emission device with a general packet radio service (GPRS) module, and a resistivity measurement device consisting of pluggable nylon modules and copper electrode rings among the pluggable nylon modules, wherein each copper electrode ring is connected with a central control unit in the acquisition and emission device through a wire. The method comprises the following steps of: selecting a sample point in a seaside region; measuring the resistivity of a soil sample at the sample point when seawater is saturated, fresh water is saturated and the salt content is 0.3 percent, and taking the resistivity asan early warning threshold value; and giving an alarm when the bottom part, middle part or upper part of the resistivity measurement device reaches the threshold value. The system is widely applied, is convenient to use and can be combined according to the monitoring aim to reduce cost, dynamic, in-situ and real-time monitoring is realized through remote data transmission, remote, in-situ, real-time and automatic synchronous monitoring is realized by vertically measuring resistivity at certain depth, and the system has great significance for studying the seawater intrusion-ground water level-soil salinization.
Owner:OCEAN UNIV OF CHINA

Blade imbalance fault diagnosis method based on stator current of double-fed wind generating set

The invention relates to a blade imbalance fault diagnosis method based on a stator current of a double-fed wind generating set. The blade imbalance fault diagnosis method comprises the following steps of: 1, controlling the double-fed wind generating set to operate in a detection mode, and keeping the wind generating set to operate at a constant rotating speed; 2, synchronously acquiring a set stator phase current iA and a generator rotating speed r in the constant-speed operating stage, which meet requirements; 3, according to the acquired generator rotating speed r, calculating a 1-multiple frequency of an impeller speed, carrying out signal processing by an envelope spectrum to obtain an envelope spectrum if signal after carrying out wavelet filtering processing on the stator phase current iA, extracting a 1-multiple frequency amplitude M (1) and a k-multiple frequency amplitude M(k) of the impeller speed in the envelope spectrum if signal and using the 1-multiple frequency amplitude M (1) and the k-multiple frequency amplitude M(k) of the impeller speed as features, wherein k represents a blade number; 4, judging sizes of the 1-multiple frequency amplitude M (1) and the k-multiple frequency amplitude M(k), and if M(1) is greater than a*M(k), determining that blade imbalance exists, wherein a represents a preset amplitude ratio. The blade imbalance fault diagnosis method is simple and easy to operate, excellent in accuracy, and good in applicability.
Owner:ZHEJIANG WINDEY

Real-time leakage analysis method, equipment and system for water supply pipe network as well as storage medium

The invention discloses a real-time leakage analysis method, equipment and system for a water supply pipe network as well as a storage medium. The method comprises the following steps of: establishinga simulation model of a to-be-managed water supply pipe network based on user water consumption of the to-be-managed water supply pipe network, inlet node pressure and pipeline parameters; obtaininga measured flow value of each node of the to-be-managed water supply pipe network; enabling the measured flow value of the node to match with a simulated flow value of a simulation model; and taking anode with matching failure between the measured flow value and the simulated flow value as a target node, and judging whether a downstream water supply pipe network of the target node has a leakage condition or not. A great number of ultrasonic flow meters are mounted in the to-be-managed water supply pipe network so as to reduce pipe network monitoring cost; the flow of the water supply pipe network is monitored in real time, and the simulated data obtained by the stimulation model is compared with the practically measured data of the water supply pipe network to determine the leakage condition of the water supply pipe network. The real-time leakage analysis method increases an accuracy rate of leakage detection, and shortens a detection period.
Owner:WUHAN NEWFIBER OPTOELECTRONICS TECH

Long-distance water environment monitor and monitoring method based on Zigbee and GPRS

The invention discloses a long-distance water environment monitor and monitoring method based on Zigbee and GPRS (General Packet Radio Service). The long-distance water environment monitor and monitoring method is to divide the water area needed to be monitored into a plurality of small monitoring areas, a plurality of secondary node modules and a main node module are configurated in each monitoring area and the secondary node module and the main node module in the whole monitoring area are connected in a star-like mode. A water quality parameter collecting module collects water quality parameters and sends the parameters to a second zigbee wireless communication module, the second zigbee wireless communication module sends the parameters to a first zigbee wireless communication module in a relay transmission mode through the zigbee protocol networking, ARM (Advanced RISC Machines) processer fuses and processes data and transmits the data to long-distance end network monitoring center through a GPRS module, the main node module controls the entrance and exit of the secondary node module and monitors the working condition of the secondary node module and the Zigbee and GPRS technology are combined to monitor the water environment in real time at the long-distance end.
Owner:CHANGZHOU UNIV

Atmospheric pollution factor concentration space-time distribution prediction method and system

The invention relates to an atmospheric pollution factor concentration space-time distribution prediction method and system, and the method comprises the following steps: constructing a sparse feature vector based on the historical monitoring data of all stations in a monitoring region, and predicting the historical data of atmospheric pollution factor concentration through a factor decomposition machine; combining the historical data of the atmospheric pollution factor concentration with meteorological parameters to train a long-short-term memory neural network, and predicting future data of the atmospheric pollution factor concentration through the trained long-short-term memory neural network; and training the radial basis neural network by combining the future data of the atmospheric pollution factor concentration with the meteorological parameters and the geographic latitude and longitude of the station, and predicting the future data of the atmospheric pollution factor concentration of the target position point in the monitoring area through the trained radial basis neural network. The method can solve the problems that in the current atmospheric pollution factor monitoring technology, a large number of monitoring devices are needed, atmospheric pollution factor concentration prediction is inaccurate, and the future distribution trend cannot be dynamically analyzed.
Owner:浙江航天恒嘉数据科技有限公司

Monitoring method for mechanical deformation of mine filling body

The invention provides a monitoring method for mechanical deformation of a mine filling body. The monitoring method comprises the following steps of (1) fixing an anchor rod at the bottom position of an air return shaft corresponding to a filling body, and fixing a channel steel with a hole at the wellhead position of the air return shaft which is positioned at the top part of the filling body; (2) taking one steel wire rope, forming a fixing end by fixing one end of the steel wire rope on the anchor rod, and forming a movable end by penetrating the steel wire rope out from the small hole on the channel steel; (3) enabling the steel wire rope to be always in a tightening state, and measuring initial distance L between the movable end of the steel wire rope and the small hole of the channel steel; and (4) measuring distance l between the movable end of the steel wire rope and the small hole of the channel steel at regular time intervals, and obtaining deformation l' of the filling body in a vertical direction by utilizing a formula: l' = L - l. The monitoring method provided by the invention is simple and accurate, existing engineering or waste engineering such as the air return shaft is fully utilized, the work amount for monitoring is less, the monitoring cost is low, and the influence on underground associated engineering is small.
Owner:JINCHUAN GROUP LIMITED

Device and method for monitoring leakage of hydraulic structure body

ActiveCN104515653AAvoid seepage leaksLarge monitoring areaDetection of fluid at leakage pointLeaking waterHydraulic structure
The invention discloses a device and a method for monitoring the leakage of a hydraulic structure body. The device comprises a plurality of leakage monitoring modules distributed in the hydraulic structure body, wherein each leakage monitoring module comprises first leakage monitoring units distributed up and down, second leakage monitoring units distributed left and right, and a telescopic support connected with the first leakage monitoring units and the second leakage monitoring units at the same time; leakage measuring optical fibers are distributed in the first leakage monitoring units and the second leakage monitoring units; the leakage condition of the hydraulic structure body is monitored through the leakage measuring optical fibers. The device disclosed by the invention has the characteristics of no heating, distribution and synchronism, and has prominent advantages on the aspects of reducing the monitoring cost, promoting the monitoring precision and the engineering practicability and the like; according to the monitoring method disclosed by the invention, the leakage monitoring modules are flexibly arranged in the hydraulic structure body, and the position and direction of leaked water are obtained through the calibration of the optical fibers and the comparison of the leakage measuring optical fibers, so that the method is simple in operation and accurate in result.
Owner:HOHAI UNIV

Reservoir dam deformation monitoring method and system

InactiveCN106595506AHigh measurement accuracyRealize automatic monitoring functionUsing optical meansLight spotControl system
The invention relates to a reservoir dam deformation monitoring method and system. The monitoring method includes the following steps that: 1) a reservoir dam deformation monitoring device is set; 2) the initial circular light spot images of each reference point are obtained; and 3) reservoir dam deformation monitoring is carried out. The reservoir dam deformation monitoring system includes a laser emitting device, reference point detecting devices and a main control system; the laser emitting device is arranged at one end of a dam and is used for emitting collimating laser light adopted as a reference line; a plurality of reference points with equal intervals are arranged one a ray with the laser emitting device adopted as an end point; one reference point detecting device is arranged at each reference point; the reference point detecting devices are used for detecting the subsidence and horizontal displacement of the dam; and the main control system is connected with the laser emitting device and the reference point detecting devices through a wireless communication mode and is used for transmitting detection commands, receiving detected data and performing analysis processing on the detected data. With the reservoir dam deformation monitoring method and system of the invention adopted, the automatic detection of the subsidence and horizontal displacement of the dam can be realized, the measurement accuracy of the reservoir dam is improved, and monitoring costs can be reduced.
Owner:UNIV OF JINAN

Nuclear radiation detecting method

ActiveCN108957514AKeep camera functionLong-term accurate nuclear radiation monitoringRadiation intensity measurementNuclear radiationCMOS
The invention provides a nuclear radiation detecting method capable of performing long-term accurate nuclear radiation monitoring and nuclear radiation dose rate estimation on a dynamic environment around a video recording device. The method includes a step of acquiring a video recorded by the video recording device with a CCD/CMOS as a sensor in an environment requiring nuclear radiation monitoring under a condition of no shading dynamic scene, a step of performing frame processing on the recorded video to obtain a series of frame images and obtaining a differential image of each frame imageand an adjacent frame image, a step of detecting a moving object region in the differential image according to the obtained differential image and removing the moving object region in the differentialimage, a step of detecting whether the frame image contains a radiation bright spot according to the differential image with the removal of the moving object region, and a step of obtaining the radiation dose rate of the nuclear radiation environment where the video recording device is located according to a ratio of a number of frame images containing radiation bright spots to a total number offrames of the recorded video and a condition of the removal of the area of the moving object. The method is applicable to nuclear radiation detecting operations.
Owner:UNIV OF SCI & TECH BEIJING

Method for rapidly performing remote sensing monitoring of dynamic changes of water and soil erosion

PendingCN109581412AQuick extractionRemote sensing monitoring of loss dynamic changes is convenient and effectiveElectromagnetic wave reradiationVegetationVegetation Index
The invention discloses a method for rapidly performing remote sensing monitoring of dynamic changes of water and soil erosion. The method comprises the step that (1) a gradient factor S of a region to be monitored is obtained; (2) remote sensing images of a plurality of years of the region to be monitored are acquired; (3) according to the remote sensing images of the multiple years in the regionto be monitored obtained in the step (2) are separately subjected to land classification, and a land classification factor L of the multiple years in the region to be monitored is obtained; accordingto the remote sensing images of the multiple years of the region to be monitored obtained in the step (2) are separately subjected to inversion by using normalized vegetation indexes, and a vegetation coverage factor C of the multiple years in the region to be monitored is obtained; (4) a water and soil erosion value A of the multiple years in the region to be monitored is calculated according toa water and soil erosion estimation formula of A=S*L*C; and (5) the conversion and superposition analysis are performed on specific different grade values of water and soil erosion in adjacent years,and the continuous change values of water and soil erosion in the multiple years in the region to be monitored are obtained. Rapid extraction of water and soil erosion regions in a large region is realized, the monitoring cost is low, and dynamic monitoring of water and soil erosion is very convenient and effective.
Owner:HEFEI UNIV OF TECH

Mobile outdoor advertisement monitoring service system and method

InactiveCN104933602ALearn about the releaseBreaking the disadvantages of lagging and slow efficiencyMarketingFar distanceComputer module
The invention discloses a mobile outdoor advertisement monitoring system and method, and belongs to an outdoor media management auxiliary system. The system comprises a terminal and a system end, wherein the terminal is accessed into the system end through a network, the system end is used for accurately positioning on a map based on a satellite positioning system through POI (point of interest) of a to-be-monitored media in advance; the terminal is used for finding the currently adjacent media monitoring tasks on the map through a positioning module, and sorting the media monitoring tasks according to near-far distance; a user can acquire the media monitoring task through the terminal, and then shoots the outdoor advertisement and uploads the shot outdoor advertisement to the system end, so that a client can conveniently understand the publication condition of the outdoor advertisement anytime anywhere; a brand new media monitoring channel is provided, so that the outdoor advertisement is monitored through the adoption of the advantages of the terminal user without special person to inspect; a new advertisement monitoring path is explored, the defects that the traditional outdoor advertisement monitoring information is lagging, and the efficiency is slow are broken through, and the monitoring cost is reduced.
Owner:NANJING YINGYAN MEDIA TECH CO LTD

Prediction method for vertical deformation of existing subway tunnel adjacent to foundation pit engineering

PendingCN110727985APredict vertical deformation trendsReduce monitoring costsGeometric CADMonitoring siteAxial distribution
The invention discloses a prediction method for vertical deformation of an existing subway tunnel adjacent to foundation pit engineering. The prediction method comprises: monitoring a foundation pit and a tunnel structure adjacent to the foundation pit laterally, and analyzing vertical displacement characteristics of an enclosure structure and the tunnel structure; recording a cumulative verticaldisplacement measured value of the enclosure structure as dw and a cumulative vertical displacement measured value of the tunnel structure as dt, taking the axial direction of the tunnel as an x-axisdirection, taking the position of a first monitoring point as an x-axis zero point, taking the monitoring data of each monitoring point as a data point, and drawing distribution curves of dw and dt along with the axial position of the tunnel; recording the horizontal distance between the enclosure structure and the adjacent ascending and descending tunnels as L; drawing a relation curve of dt and1000dw/L by considering the influence of L on the deformation correlation of the enclosure structure and the tunnel to obtain dt = Aln (1000dw/L) + B; obtaining dt' of different axial positions of thetunnel by utilizing dt'= Alg (1000dw/L) + B; and drawing a distribution curve of dt and dt' along the axial direction of the tunnel, calculating a prediction error, and evaluating a prediction effect.
Owner:TIANJIN UNIV
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