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43results about How to "Easy and flexible detection" patented technology

Locating method and system for city gas pipeline leakage test

The invention relates to a novel leakage detecting-positioning method of urban natural gas pipelines and a system thereof. An infrared laser device, a laser device temperature and current controller and a signal generator are arranged in a case. A light outlet of the infrared laser device is positioned at the front end of a light inlet window sheet of a multiple-reflection absorbing pool, wherein, an air outlet of the multiple-reflection absorbing pool is connected with a micro suction pump, and an air inlet thereof is connected with a hose. The end of the hose is connected with a sampling probe. An exhaust port of the micro suction pump is communicated with the atmosphere out of the case. The laser entering the multiple-reflection absorbing pool is radiated out from the light outlet window sheet of the multiple-reflection absorbing pool and received by a laser detector. A signal output of the laser detector conducts a signal treatment. The sampling probe adopts air suction type sampling so as to lead the detection to be more flexible and convenient as well as provide high resolution. By adopting a laser spectrum technology which reacts to CH4 only, the detection limit reaches one part per million (PPM) level and the fine change of the density of the CH4 gas around a leakage point caused by the leakage of the natural gas pipeline can be detected.
Owner:UNIV OF SCI & TECH OF CHINA

Intelligent detection system for blade surface defects of wind turbine generator system

The invention provides an intelligent detection system for blade surface detects of a wind turbine generator system. The intelligent detection system comprises an image pickup system, a programmable software detection system and a communication system, wherein the image pickup system comprises a support and an image pickup apparatus, an adjusting apparatus comprises a pitch angle adjuster and a horizontal adjuster, and the programmable software detection system comprises an image acquisition module, an image analysis and screening module, an image classification module, an image filter module,an image processing module, a defect identification module, a calculation defect position and geometric characteristic information module, a defect analysis suggestion module and a defect detection report output module which are successively connected with one another. The intelligent detection system has a digital image processing function, analyzes and processes an acquired image, extracts a defect image and automatically generates a defect report, so that the intelligent defection for the blade surface defects of the wind power generator system can be realized; and compared with the existing defection means, the intelligent detection system has the advantages of convenience and flexibility in detection, less time, remote detection, accurate detection result and no safety potential hazard.
Owner:河南志格新能源科技有限公司

Error code detection apparatus and method for digital exchange system

The invention provides a kind of error detecting device for a digital exchanging system, which includes the first m series generator, series / parallel converting circuit, error receiving circuit, shift register, the second m series generator, control circuit, comparison circuit and error calculator; error detecting device generates series m series fake random code, which is converted into parallel data with the same width to exchanging channel through series / parallel converting circuit, the control circuit adds the parallel data into different the output channel of the error, then the data are returned to the input channel through external circuit, the error detecting device carries on the judgment if the returned data is fake random code.
Owner:ZTE CORP

Circuit board fault self-positioning device and method based on programmable logic device

The invention discloses a circuit plate fault self-positioning device and its positioning method based on a programmable logic unit. The device comprises a programmable logic unit with embedded test module and a debug machine which is connected with the programmable logic unit by a fault positioning interface. It positions the programmable logic unit and its embedded test module when the circuit plate system is running, which comprises: positioning the trigger condition, sampling the tested circuit plate signal and transmitting it to the debug machine through the fault positioning interface by the test module when the trigger signal satisfies the trigger condition, doing signal analyzing or human quoting by the debug machine to do circuit plate system fault positioning.
Owner:ZTE CORP

Middle pan comprehensive measurement gauge of scraper conveyor for coal mine and measurement method using same

The invention belongs to the technical field of mechanical finish amount gauges, and relates to a middle pan comprehensive measurement gauge of a scraper conveyor for a coal mine and a measurement method using the same. The middle pan comprehensive measurement gauge comprises a main scale, a combined base, a secondary scale, positioning guide rails, a screw and a thumb nut. The middle pan comprehensive measurement gauge is characterized in that scales are marked on the main scale and the secondary scale, and slots are formed on the main scale and the secondary scale; a measurement face of the main scale is an inner side plane with a left end which is vertical to the main scale, and a distance between the measurement face and a zero mark is 100 mm; a measuring point of the secondary scale is a top point at the left end, and a distance between the measurement point and the zero mark is 100 mm; a slot is formed on an upright scale of the combined base, the bottom faces at both left and right ends of the slot are located on the same horizontal plane, and the upright scale is vertical to the base; two vertical through grooves are formed on the positioning guide rails; the two positioning guide rails pass through the upright scale of the combined base; the main scale and the secondary scale respectively pass through horizontal guide rail grooves of the positioning guide rails and are vertical to the upright scale of the combined base; the main scale is arranged at the upper part of the upright scale, and the secondary scale is arranged at the lower part of the upright scale; and the main scale and the secondary scale are respectively fixed on the upright scale of the combined base by the screw and the thumb nut.
Owner:CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY

Energy storage battery stack three-dimensional temperature visualization method based on infrared image

The invention discloses an energy storage battery stack three-dimensional temperature visualization method based on an infrared image. According to the method, firstly, a surface source blackbody is used as a benchmark to collect grayscale images of an infrared thermal imager under different blackbody temperature, and a temperature and grayscale mapping model is established; the acquired infraredimage is preprocessed, a battery stack surface is separated, then the surface is divided, subunit grayscale is calculated, and battery stack surface temperature is obtained according to the temperature and grayscale mapping model; based on the principle of inverse distance weight interpolation, battery stack three-dimensional temperature is obtained through preliminary interpolation on the batterystack surface temperature, then a battery stack three-dimensional temperature error is obtained according to interpolation on temperature errors of N temperature sensors, a battery stack three-dimensional temperature model is corrected, and reserved output of the temperature sensors is used for evaluating the battery stack three-dimensional temperature model; and the model of a battery in use isused as a benchmark to establish a battery impedance and temperature mapping model, and acquired internal temperature of stereoscopic subunits is used to correct the three-dimensional temperature model. Through the method, qualitative and positioning analysis can be performed on a battery stack thermal fault more intelligently.
Owner:ZHEJIANG UNIV OF TECH

Two-position workpiece detecting mechanism capable of being rotated and lifted

Provided is a two-position workpiece detecting mechanism capable of being rotated and lifted. A movable board which is connected with a driving device is arranged on a machine frame, first rolling shafts are supported on the movable board through a supporting frame, sleeved with first idler wheels, and connected with a first driving mechanism, and the first idler wheels are used for conveying workpieces; a guide sleeve is fixed to the movable board, a guide post is matched with the guide sleeve, the movable board is fixedly connected with an oil cylinder connected with a hydraulic control device, the outer end of the piston rod matched with the oil cylinder and the upper end of the guide post are connected with a supporting board together, the upper side of the supporting board is connected with a rotary board through a rotary table mechanism, second rolling shafts are supported on the upper surface of the rotary board, the second rolling shafts are sleeved with second idler wheels and connected with a second driving mechanism, and the second idler wheels are used for conveying the workpieces; a rotation limiting piece is arranged between the supporting board and the rotary board; the first rolling shafts are multiple in number, arranged in parallel, driven by the same driving mechanism, and linked through a transmission chain, and the second rolling shafts are multiple in number, arranged in parallel, driven by the same driving mechanism, and linked through a transmission chain. When the two-position workpiece detecting mechanism is used for detecting the workpieces, hoisting and shutdown are not needed, working efficiency is high, production cost is low, and flexibility and convenience are obtained.
Owner:通用技术集团大连机床有限责任公司

Intelligent human body scoliosis detecting device and detecting method thereof

The invention discloses an intelligent human body scoliosis detecting device and a detecting method thereof. The intelligent human body scoliosis detecting device comprises a measuring body and a handle arranged on a lower side wall of a tail end portion of the measuring body, wherein the head of the measuring body contracts inwards, and extends outwards along an axis to form a measuring head, a power supply unit is arranged in the handle, and an image processing unit is arranged in the measuring body. The disclosed detecting method comprises the steps of irradiating muscle blood on two sidesof the dorsal spine of a patient by means of a laser positioning lamp, acquiring a spine thermal image of the muscle blood on the two sides of the spine by means of an infrared thermal imaging camera,and acquiring muscle blood temperature distribution change according to the spine thermal image to judge whether or not scoliosis exists. By means of the intelligent human body scoliosis detecting device and the detecting method thereof, the human body spine can be detected accurately and quickly so that health conditions of the human body spine can be quickly evaluated.
Owner:SHANGHAI UNIV OF MEDICINE & HEALTH SCI

Magnetic flux leakage defection machine of oil sleeve

The invention discloses a magnetic flux leakage defection machine of an oil sleeve. The magnetic flux leakage defection machine comprises a control cabinet, a computer, a production line detection system and a marking machine, wherein the control cabinet is respectively connected with the computer, the production line detection system and the marking machine through a signal line; and the production line detection system comprises a plurality of clamping driving devices, a vertical defect detection device and a transverse defect detection device. Electric signals of sleeve defects, detected by an infrared monitoring sensor on the production line detection system, are processed by a signal amplification circuit and a noise cancelling circuit and are divided into two paths; in one path, defect parts are accurately sprayed with marks by a signal processing circuit through utilizing the computer to drive the marking machine; and in the other path, defect signals are mixed into a simulated signal, and defect degree is displayed on a display screen of the computer through an A / D (Analog / Digital) converting circuit. With the adoption of the technical scheme of the invention, the magnetic flux leakage defection machine disclosed by the invention can carry out defect detection on the oil sleeve in rotation process on a production line, has small power consumption amount, is energy-saving and environment-friendly and has high detection sensitivity; and a probe does not need to be replaced when sleeves with different calibers are detected, the detection efficiency is high, the hooping of the oil sleeve can be smoothly avoided, the probe can be automatically reset after being detected, the service life is long, the cost is reduced, and the detection quality and the detection effect are improved.
Owner:安庆市安科精机有限责任公司

Sample collection device for environment protection engineering

ActiveCN108974564AHelp not to deteriorateAccurate later detectionShock-sensitive articlesDischarging meansEngineeringSample collection
The invention discloses a sample collection device for environment protection engineering. The sample collection device comprises a box, a first partition, a second partition, a third partition and afourth partition are sequentially fixed inside the box, a cover plate is mounted at the top of the box, the inside of the box is sequentially divided into a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity by the first partition, the second partition, the third partition and the fourth partition, a mounting plate is fixed at the top edge of the box, a control device is mounted on the lateral side of the mounting plate and comprises a touch screen and a PLC, a first temperature sensor is mounted on the lateral side of the first cavity, a first storage device ismounted inside the first cavity, and a cooling box is mounted inside the second cavity. The sample collection device is conducive to better preserving samples and convenient for detecting gas at different heights in a factory, and convenience and efficiency in the process of collection are improved.
Owner:江西锦囊商旅信息有限公司

ShRNA-Ago2 coexpression lentivirus RNAi vector, recombinant plasmid and constructing method of recombinant plasmid

The invention discloses an shRNA-Ago2 coexpression lentivirus RNAi vector, a recombinant plasmid and a constructing method of the recombinant plasmid. The shRNA-Ago2 coexpression lentivirus RNAi vector includes an shRNA expression cassette and an Ago2 protein expression cassette, and the shRNA expression cassette includes a promoter U6, H1 or 7SK, and a ccdB lethal gene; and the Ago2 protein expression cassette includes a CMV strong promoter, an Ago2 protein expression gene, an internal ribosome entry site DNA sequence and a ZsGreen1 green fluorescin expression gene. After the vector is introduced into cells, shRNA for interfering the target gene and the enhancement factor Ago2 and ZsGreen1 green fluorescin report gene can be simultaneously expressed. The vector co-expresses Ago2 to substantially enhance the silencing effect of shRNA, the operation is simple and rapid, the effect and the lasting time of the RNAi interference gene are greatly improved, and the vector can be used to treat tumors and other serious diseases.
Owner:苟德明 +1

Multifunctional green food detecting device

The invention discloses a multifunctional green food detecting device, which comprises a detecting device shell, a food inlet-outlet and a liquid crystal display screen, wherein a touch screen module is arranged below the liquid crystal display screen; a control switch is mounted on the left side of the touch screen module; the right side of the liquid crystal display screen is provided with an indication lamp; a sliding chute is mounted below the food inlet-outlet; the sliding chute is connected with a drawer in a sliding manner through a sliding block; a pulling handle is mounted on the drawer; a hinge is arranged above the food inlet-outlet; a closing plate is hung on the hinge; universal wheels are mounted below the detecting device shell; a touch display module is electrically connected with a master controller through a conducting wire. Through adding new functions and overcoming original disadvantages, the multifunctional green food detecting device is enabled to be more reasonable in structure and complete in functions; the synchronous detection on multiple indexes of food is realized; in this way, the detection is simpler and more convenient; manpower and material resources are saved.
Owner:GUANGZHOU DANJUE COMM TECH CO LTD

Robot device for visually detecting component in core cavity of pebble bed reactor

A robot device for visually detecting a component in a core cavity of a pebble bed reactor comprises a driving unit, a lifting rotating mechanism, a connecting pipe assembly and a visual detection robot device body. According to the robot device, a mechanical arm is driven in a rope driving manner, so that the reliability of the visual detection robot device body working in high-temperature and radiation conditions in the core cavity can be improved, and meanwhile, the location and posture of a shooting system can be flexibly conveniently changed to achieve accuracy detection on the componentin the core cavity; in addition, an upper guide pipe set and a lower guide pipe set are used during rope driving, so that a guide structure of a rope is simplified; a main rod, a main rod sliding block, a crank and the mechanical arm form a crank sliding block mechanism which can be folded while passing through a small-size graphite fuel ball feeding channel and can be unfolded while entering a big-size core cavity, so that the robot device has the characteristic of being adapting to the core cavity being narrow in an entrance and wide in inside. The robot device is simple in structure, and capable of visually detecting the component in the core cavity of the pebble bed reactor.
Owner:TSINGHUA UNIV

Identification instrument for detecting biological spots on criminal investigation site

PendingCN111965152AReduce false positives and false positivesFulfilling the Needs of a Fast DetectiveFluorescence/phosphorescenceBeam splitterFluorescence spectra
The invention relates to an identification instrument for detecting biological spots on a criminal investigation site. The identification instrument comprises an excitation light source, a light source diffraction grating, a focusing coupling mirror, a fluorescence diffraction grating, a spectral focusing imaging mirror and a photoelectric detector array. Excitation light emitted by the excitationlight source is emitted to the light source diffraction grating through the light source slit, light with different wavelengths is emitted to the focusing coupling mirror through the semi-reflectingand semi-transmitting beam splitter, and the focusing coupling mirror is used for converging the excitation light with different wavelengths and emitting the excitation light to a measured target through the exit slit. Excited fluorescence of a measured target is collected by the focusing coupling mirror through the exit slit; the laser beam is emitted to a fluorescence diffraction grating througha semi-reflecting and semi-transmitting beam splitter; the fluorescence diffraction grating is used for separating a multicolor fluorescence spectrum signal into monochromatic light according to a wavelength space, each monochromatic fluorescence component is focused and imaged to different positions through the spectrum focusing imaging lens, and the photoelectric detector array is used for collecting fluorescence spectrum signals at different positions to complete biological spot detection of a detected target.
Owner:INST OF FORENSIC SCI OF MIN OF PUBLIC SECURITY

Outdoor display screen detection and repair method, device and equipment and storage medium

InactiveCN111709949ARestore full brightnessAvoid the problem of insufficient resolutionImage analysisGeometric image transformationComputer graphics (images)Image resolution
The invention discloses an outdoor display screen detection and repair method, device and equipment and a storage medium, and the method comprises the steps: controlling an unmanned plane to shoot anoutdoor display screen through a preset shooting rule, and obtaining the images of all regions of the outdoor display screen; splicing and combining the regional images to obtain a combined image, andanalyzing the combined image to obtain color spot compensation data of the combined image; performing color spot repair on the outdoor display screen according to the color spot compensation data. The stability problem caused by a complex mechanism is solved through mobile shooting of the unmanned aerial vehicle; the problem of insufficient resolution of the camera due to overlarge size of the display screen is avoided; the dependence on the spatial layout of a plant is eliminated, the limitation of space and distance is broken through, the detection on a large-size display screen is more flexible and convenient, and the complete brightness of the whole display screen is well restored by combining a plurality of images in an image splicing and combining manner; and the effect and the stability of color spot repair are improved.
Owner:WUHAN JINGCE ELECTRONICS GRP CO LTD +1

Circuit board fault self-positioning device and method based on programmable logic device

The invention discloses a circuit plate fault self-positioning device and its positioning method based on a programmable logic unit. The device comprises a programmable logic unit with embedded test module and a debug machine which is connected with the programmable logic unit by a fault positioning interface. It positions the programmable logic unit and its embedded test module when the circuit plate system is running, which comprises: positioning the trigger condition, sampling the tested circuit plate signal and transmitting it to the debug machine through the fault positioning interface by the test module when the trigger signal satisfies the trigger condition, doing signal analyzing or human quoting by the debug machine to do circuit plate system fault positioning.
Owner:ZTE CORP

Food detection method and device based on neural network model

The invention provides a food detection method and device based on a neural network model, and relates to the field of artificial intelligence. The method comprises the following steps: acquiring a target image of a to-be-detected fresh food; performing convolution processing on the target image to obtain global features and local features of the target image; splicing the global features and the local features of the target image to obtain target image features of the target image; inputting the target image features into a target food quality detection model for processing to obtain first initial quality information of the fresh food; query request information is sent to a cloud management system to obtain second initial quality information of the to-be-detected fresh food, and the second initial quality information comprises a food producing area and a quality risk of the to-be-detected fresh food; and generating final quality information of the to-be-detected fresh food according to the first initial quality information and the second initial quality information.
Owner:中检溯源江苏技术服务有限公司

Battery capacity detection device and battery device

The invention provides a battery capacity detection device applied to a battery set. The battery set consists of a plurality of batteries, wherein the plurality of parallel connected batteries form parallel battery sets, and the plurality of parallel connected battery sets are connected in series to form a battery set; and the quantities of the batteries in the plurality of battery sets are the same. The battery capacity detection device comprises a plurality of resistors, a plurality of voltage sensors, a plurality of current sensors and a calculating unit, wherein the plurality of resistors are connected among the plurality of parallel connected batteries to ensure that each resistor with the same resistance value is respectively connected between any two batteries in each parallel connected battery set; the plurality of voltage sensors are used for detecting the voltage values of voltage at two ends of the resistors with the same resistance value; the plurality of current sensors are used for detecting the current values of current flowing into corresponding batteries; and the calculating unit is used for judging the capacity recession condition of the plurality of batteries. The invention also discloses a battery device with a capacity detection function. According to the invention, the capacity of the batteries can be detected in real time so as to replace the batteries and prolong the service life of the battery set; and the device is convenient for being used on an electric vehicle.
Owner:绿源投资控股集团有限公司

Robotic device for visual inspection of internal components of pebble bed reactor core cavity

A robot device for visually detecting a component in a core cavity of a pebble bed reactor comprises a driving unit, a lifting rotating mechanism, a connecting pipe assembly and a visual detection robot device body. According to the robot device, a mechanical arm is driven in a rope driving manner, so that the reliability of the visual detection robot device body working in high-temperature and radiation conditions in the core cavity can be improved, and meanwhile, the location and posture of a shooting system can be flexibly conveniently changed to achieve accuracy detection on the componentin the core cavity; in addition, an upper guide pipe set and a lower guide pipe set are used during rope driving, so that a guide structure of a rope is simplified; a main rod, a main rod sliding block, a crank and the mechanical arm form a crank sliding block mechanism which can be folded while passing through a small-size graphite fuel ball feeding channel and can be unfolded while entering a big-size core cavity, so that the robot device has the characteristic of being adapting to the core cavity being narrow in an entrance and wide in inside. The robot device is simple in structure, and capable of visually detecting the component in the core cavity of the pebble bed reactor.
Owner:TSINGHUA UNIV

SF6 infrared leakage detection assistant tool

ActiveCN108332913ASolving the problem of no wind in leak detectionSolve the problem of no windDetection of fluid at leakage pointMaterial analysis by optical meansEngineeringSound detection
The invention relates to an SF6 infrared leakage detection assistant tool, which includes a base. A fan is installed in the middle part of the base, and air outlets are respectively arranged on two sides of the fan. The bottom part of the base is connected with a handle, and the top part of the base is connected to two air supply pipes capable of folding to an integration in hinge. The air outletsarranged on the two sides of the fan are respectively connected with the bottom parts of the two air supply pipes through flexible air outlet pipes. Two ends of the air supply pipes are close and theinvolution surfaces of the two air supply pipes are planes; a plurality of air supply holes are respectively arranged on the two corresponding involution surfaces and two corresponding air supply holes are communicated with each other when the air supply pipes are folded; wherein the top end of one air supply pipe is connected to a metal setting hose, and a lateral air outlet is arranged on the top end of the metal setting hose. The SF6 infrared leakage detection assistant tool solves the problem of lacking air in the SF6 leakage detection and has the advantages of easy whole structure, convenient maneuvering and sound detection effect.
Owner:STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY +1

Intelligent head ring

The invention provides an intelligent head ring, which comprises a head ring outer shell, a main board component, a signal detecting chip and a head ring bottom plate; the head ring outer shell is fixedly connected with the head ring bottom plate, and a holding cavity for holding the main board component is formed between the head ring outer shell and the head ring bottom plate, the signal detecting chip is bonded with the head ring bottom plate. The intelligent head ring is convenient to carry and detect, and can reasonably use the structure space and is strong in practicability.
Owner:浙江纽若思医疗科技有限公司

Rotatable and liftable two-station workpiece detection mechanism

Provided is a two-position workpiece detecting mechanism capable of being rotated and lifted. A movable board which is connected with a driving device is arranged on a machine frame, first rolling shafts are supported on the movable board through a supporting frame, sleeved with first idler wheels, and connected with a first driving mechanism, and the first idler wheels are used for conveying workpieces; a guide sleeve is fixed to the movable board, a guide post is matched with the guide sleeve, the movable board is fixedly connected with an oil cylinder connected with a hydraulic control device, the outer end of the piston rod matched with the oil cylinder and the upper end of the guide post are connected with a supporting board together, the upper side of the supporting board is connected with a rotary board through a rotary table mechanism, second rolling shafts are supported on the upper surface of the rotary board, the second rolling shafts are sleeved with second idler wheels and connected with a second driving mechanism, and the second idler wheels are used for conveying the workpieces; a rotation limiting piece is arranged between the supporting board and the rotary board; the first rolling shafts are multiple in number, arranged in parallel, driven by the same driving mechanism, and linked through a transmission chain, and the second rolling shafts are multiple in number, arranged in parallel, driven by the same driving mechanism, and linked through a transmission chain. When the two-position workpiece detecting mechanism is used for detecting the workpieces, hoisting and shutdown are not needed, working efficiency is high, production cost is low, and flexibility and convenience are obtained.
Owner:通用技术集团大连机床有限责任公司

Children walking posture detection shoe and walking posture detection method

The invention discloses a children walking posture detection shoe and a walking posture detection method. The detection shoe comprises a vamp and a sole, and a walking posture detection circuit is arranged at the sole and comprises a first pressure sensor, a second pressure sensor, a third pressure sensor, an MPU6050 module, a triaxial accelerometer, a single-chip microcomputer, a wireless communication module, a memory and a power source. The first pressure sensor, the second pressure sensor, the third pressure sensor, the MPU6050 module and the triaxial accelerometer are connected with the single-chip microcomputer which is connected with the wireless communication module and the memory. A real-time walking posture series is acquired through real-time acquisition of pressures applied to the first metatarsal, the fifth metatarsal and the calcaneus, a triaxial rotational angular velocity and a triaxial acceleration and is compared with a standard walking posture series obtained in walking under guidance of guardians to judge whether walking postures are correct or not, and warning information is generated and sent out through the wireless communication module to inform the guardians when the walking postures are incorrect, so that the guardians can be timely and conveniently aware of step incoordination or step abnormality of children.
Owner:NANJING COLLEGE OF INFORMATION TECH

Overhead line sag detection early warning method based on unmanned aerial vehicle magnetic field measurement

PendingCN112797881AConvenient and flexible detectionSuitable for selective detectionTransmission systemsUsing electrical meansUncrewed vehicleDetection early
The invention provides an overhead line sag detection and early warning method based on unmanned aerial vehicle magnetic field measurement. The method comprises the following steps: (1) wirelessly sending the lowest sag position of an overhead line to an unmanned aerial vehicle; (2) controlling the unmanned aerial vehicle to reach the lowest sag position of the overhead line, and collecting ground electric field intensity; (3) extracting a voltage signal and a current signal of the overhead line; (4) filtering high-frequency harmonic interference signals; (5) calculating the size of the sag of the overhead line; (6) judging whether the sag is greater than a sag alarm value or not, if so, sending out a sag large alarm, and entering the step (7); if not, entering the step (7); (7) calculating the sag change rate; (8) judging whether the sag change rate is greater than a sag change rate alarm value or not, and if yes, giving an abnormal sag change alarm; if not, entering the step (9); and (9) judging whether detection is continued or not, if so, returning to the step (1), and if not, ending and controlling the unmanned aerial vehicle to return.
Owner:JIANGSU ELECTRIC POWER CO

Detection system and method of slope planting vegetation protection function based on image analysis

The invention discloses a detection system and method for the protection function of slope planting vegetation based on image analysis, relates to the technical field of slope detection, and solves the problem that the detection frequency of the protection performance detection of the existing slope greening is low and wastes a lot of manpower and For the problem of low material resources and detection efficiency, the key points of the technical solution are: including image acquisition module, type analysis module, plane distribution generation module, space distribution generation module, protection function calculation module, protection data output module and memory, with flexible pairing The protection performance of the slope greening area is tested everywhere, and the work efficiency and accuracy of the protection performance detection are improved.
Owner:SOUTHWEST PETROLEUM UNIV

Research and development of Co-based amorphous-wire steel-plate crack detector

The invention relates to a device for detection of cracks in a steel plate, specifically to a device for measuring leakage magnetic field of cracks in the surface of a steel plate on the basis of a new material Co-based amorphous-wire probe to realize crack detection. The device comprises an electromagnet (1), a Co-based amorphous wire (2), a duplex winding coil (3), a master control circuit board (4), a multivibrator circuit (5), a signal amplification circuit (6), a signal processing circuit (7), a touch display screen interface (8), a touch display screen (9), a power circuit (10) and a 12V lithium battery (11). The magnetic flux leakage testing probe is composed of the Co-based amorphous wire (2) and the duplex winding coil (3) connected to a differential structure. By the giant magneto-impedance effect of the amorphous wire, the novel probe can detect the leakage magnetic field formed by micro-cracks. In addition, a detection signal is processed by a STM32 processor, and finally crack depth is displayed on an LCD screen. The device can raise accuracy and sensitivity of detection of cracks in a steel plate and is especially suitable for detection of micro-cracks.
Owner:TIANJIN POLYTECHNIC UNIV
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