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52results about How to "Accurate angle measurement" patented technology
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Inertial navigation method applicable to AGV storage
InactiveCN105180932ALow costSolve defects that are more affected by dusty environmentsNavigation by speed/acceleration measurementsPosition/course control in two dimensionsMagnetic markerGyroscope
The invention discloses an inertial navigation method applicable to AGV storage, which comprises the following steps of S1, building a navigation system; S2, reading magnetic marker data; S3, acquiring trolley offset data; S4, programming a route; S5, acquiring gyroscope angle; S6, correcting the angle; S7, reading RFID; S8, determining an operational mode; S9, controlling movement; and S10, repeating the steps S2-S9. According to the invention, the magnetic marker is adopted to replace a magnetic stripe and a two-dimension code, so that the cost is saved, and the defect that the two-dimension code is influenced seriously by dirty environment at the same time, and the trackless navigation can be realized; the system is accurate in measurement position, the positional accuracy can be + / -5mm, the angle accuracy is + / -0.1 degree, the navigation accuracy is high and can be + / -10mm and the navigation speed is 1m / s, and the resource is saved effectively.
Owner:CHENGDU SIWI HIGH TECH IND GARDEN
Rotary encoder
InactiveUS6922899B2Accurate angle measurementEfficient removalAngles/taper measurementsUsing electrical meansClassical mechanicsError function
There is provided a rotary encoder which can eliminate an angle error caused by an eccentricity from a measured angle without strictly adjusting hardware and which can also eliminate a graduation error. Detection of a rotation angle of the rotating section and measurement of an error E (θn) included in the detected angle θ are performed in advance, an error function E(θ) represented by a periodic function of the detected angle θ is calculated on the basis of these values, a storing means for storing the periodic function of the calculated error E(θ) is arranged, and an angle obtained by subtracting a value obtained by substituting the detected angle θa for variables in the error function E(θ) from the detected angle θa is displayed on a display unit.
Owner:SOKKOIA COMPANY LIMITED
Identification and positioning method and system for acquiring arrival angle of wireless signal by intelligent antenna
ActiveCN110687500AReduce the impact of noiseAccurate angle measurementRadio wave direction/deviation determination systemsPosition fixationSmart antennaArray element
The invention belongs to the technical field of wireless positioning navigation, and discloses an identification and positioning method and a system for acquiring an arrival angle of a wireless signalby an intelligent antenna. The method comprises the following steps: carrying out a phase synchronization processing on received array data; solving an actual signal initial arrival angle by methodssuch as Orthogonal Matching Pursuit (OMP); carrying out a more accurate signal arrival angle estimation on a preliminary estimation value of the arrival angle by using a neighboring angle power difference method so as to perform positioning; after an accurate arrival angle is obtained for the first time, obtaining an initial arrival angle of a next position state by using beam forming, and carrying out continuous estimations and positioning of high-accuracy arrival angles by using an Auto Astro Position Device (AAPD). The identification and positioning method and the system for acquiring the arrival angle of the wireless signal by the intelligent antenna have the advantages that estimation precision of an arrival angle of a target wireless signal can be effectively improved under the conditions of low signal-to-noise ratio and less receiving end array element number; and estimation errors caused by multipath are suppressed, thereby achieving an algorithm with strong stability and highfeasibility, and improving related positioning precision.
Owner:WUHAN UNIV
Multi-angle testing device and operation method thereof
InactiveCN107101937ARealize stepless adjustmentMeet the test requirementsUsing mechanical meansMaterial analysisLocking mechanismEngineering
The invention discloses a multi-angle testing device and an operation method thereof. The device comprises a first fixing ring and a second fixing ring which are arc-shaped and oppositely arranged, and waist-shaped grooves are arranged in the middle parts of the arc shapes, wherein a roller is arranged at one end of each of a first clamp and a second clamp; the rollers are positioned in the waist-shaped grooves; locking mechanisms are arranged on clamps beside the rollers; the other end of each of the first clamp and the second clamp is used for compressing a to-be-tested test piece; a rod type driving machine is connected between the first clamp and the first fixing ring; an angle sensor is mounted between the first clamp and the second fixing ring; connecting columns are connected to the outer sides of the arc shapes of the first fixing ring and the second fixing ring. The device is complete in functions, simple to assemble, and capable of realize intelligent testing and stepless adjustment; the adhering intensity of the interface of a solid rocket motor can be completely and accurately tested; the device and the testing method are used repeatedly in interface adhering performance monitoring and evaluation of a plurality of products, and good results are obtained.
Owner:HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
Circulating ball type electric power steering gear
InactiveCN111284556AObvious beneficial effectLight steeringSteering linkagesMechanical steering gearsElectric power steeringReduction drive
The invention relates to the technical field of steering equipment for vehicles, and provides a circulating ball type electric power steering gear which comprises a mechanical steering gear, a speed reducer, an integrated motor controller and a sensor. The mechanical steering gear is provided with a steering gear shell and a steering screw, and the speed reducer is provided with a speed reducer shell. The steering gear shell and the speed reducer shell are fixed in a detachable connection mode. A steering input shaft and a worm wheel shaft are arranged in the speed reducer and are flexibly connected through an elastic torsion bar; and a sensor is arranged at the joint of the input end of the steering input shaft and the output end of the worm wheel shaft. The Hela torque sensor capable ofoutputting a torque signal and a corner signal at the same time is adopted, induction is more sensitive, and the signals are more stable and reliable.
Owner:山东先河汽车转向器有限公司
Low-power-consumption wideband single-compartment-ball sea seismograph
InactiveCN106680877ALower center of gravityImprove installation accuracySeismology for water-covered areasOcean bottomEngineering
The invention discloses a low-power-consumption wideband single-compartment-ball sea seismograph which comprises a plastic shell, a glass instrument compartment ball, a variable-buoyancy mechanism and a weight upspring frame. The glass instrument compartment ball is fixedly mounted in the plastic shell, the variable-buoyancy mechanism is positioned at the top end of the plastic shell, and the weight upspring frame is positioned at the bottom end of the plastic shell; the variable-buoyancy mechanism and the weight upspring frame are fixedly connected by a tensioning steel wire to fix the plastic shell in the weight upspring frame. The sea seismograph integrates an independently developed wideband seismograph (30s-100Hz) with a water sound pressure sensor mounted outside an instrument, thereby being capable of realizing multipurpose seaquake detection.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
Angle sensor
ActiveCN102589412AError minimizationAchieve high sensitivityUsing electrical meansSteering partsControl theoryGear ratio
Owner:LG INNOTEK CO LTD
Two-dimensional laser autocollimator with air disturbance resistance
InactiveCN108061527AEliminate measurement errorsAccurate angle measurementUsing optical meansOptical pathWaveplate
The invention discloses a two-dimensional laser autocollimator with air disturbance resistance. Through realizing a fact that the light transmission areas of a lambda / 4 wave plate and an attenuating plate in an optical axis are same, two light beams which are imaged on a reference surface array CCD and a measuring surface array CCD are in the same optical path. The coverage areas of the two lightbeams in the optical path are completely same. The influences of air disturbance to the two light beams are completely same. By means of a method of performing differential calculation on the images on the two CCDs, the measurement error generated by air disturbance can be eliminated, and finally the rotating angle of a reflector is accurately measured. The two-dimensional laser autocollimator issuitable for long-distance measurement by the autocollimator.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Collision avoidance system based on ADS-B
ActiveCN109131909AReduce dependenceReduce distractionsAircraft indicatorsAircraft traffic controlInformation processingComputer module
The invention discloses a collision avoidance system based on ADS-B, including: an ADS-B information decoding module used to decode the received ADS-B information of the neighboring machine, and calculate the position information of the neighboring machine; a anti-collision information processing sub-module used for converting the position information of the neighboring machine into the angle of the neighboring machine relative to the local machine, the distance, the height and the time stamp of the neighboring machine relative to the local machine, confirming whether the neighboring machine is tracked, and then sending the tracing information list to the anti-collision information processing module; an anti-collision information processing sub-module used for converting the position information of the neighboring machine into the distance, the height and the time stamp of the neighboring machine relative to the local machine. The invention can reduce the dependence on the radio frequency module in the traditional TCAS, simplify the equipment, reduce the cost and is more suitable for the use of the light aircraft or the unmanned aerial vehicle, reduce the frequency of the inquiry sending and reduce the interference to the airspace wireless environment.
Owner:CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
Construction layout and angle measurement tool
ActiveUS20050257390A1Accurate angle measurementAccurate measurementRoof toolsOther artistic work equipmentsBuilding materialEngineering
A construction layout and angle measurement tool includes opposite working sides having unique indicia for establishing angles from side edges or corners of building materials. When used with a reference line, and when attached to the workpiece, the tool allows site layout and evaluation by only one person. The tool may be mounted on vertical, horizontal, and inclined workpieces. Angles are determined and evaluated directly with the tool while avoiding mathematical computation.
Owner:MOSS JOHN B
Micro-impulse torsion device for differential measurement of laser interferometry
ActiveCN111630946BRealize measurementReasonable rangeApparatus for force/torque/work measurementConverting sensor output opticallyBeam splitterPhotodetector
The invention discloses a micro-impulse torsion device for differential measurement of laser interferometry, which solves the problems of low precision of torsion, defocus, and translation caused by impact force loading. Including the torsion part and the laser interference part; the torsion part includes a vertical frame, an upper cross bar and a lower cross bar, an oblique beam, a lifting adjustment mechanism and a translation adjustment mechanism; between the upper cross bar and the lower cross bar of the shaped frame The pendulum wire is suspended between the wires, and the middle part of the wire is fixed with a pendulum beam perpendicular to the wire. The vertical rod is fixed on the upper end of the inclined beam through the lifting adjustment mechanism. The lower end of the inclined beam is installed on the translation adjustment mechanism, and the translation adjustment mechanism is fixed on the test bench. ; The laser interference part includes beam expanders, reflectors, beam splitters, He-Ne lasers for generating interference beams, photodetectors and signal processing terminals. The measuring range of the device system of the invention is reasonable, the measurement accuracy is higher, the measurement process period is short, and the high-precision laser micro-pulse measurement is realized.
Owner:PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
Open land combined foundation pit excavation monitoring and early warning system suitable for high slope and river channel double steps and operation method of open land combined foundation pit excavation monitoring and early warning system
PendingCN113865551ASpeed up the flowNon-adhesiveFoundation testingUsing electrical meansLaser rangefinderGeotechnical engineering
An open land combined foundation pit excavation monitoring and early warning system suitable for a high slope and river channel double steps comprises an unmanned aerial vehicle, a soil body displacement monitoring device and a high slope sliding monitoring device, the soil body displacement monitoring device is located in a river channel, and the high slope sliding monitoring device is located in the high slope; the soil displacement monitoring device comprises a steel shell, a center rod piece, a fixing bolt, a transmission antenna, a laser lens, an anchoring device, a threaded opening, a limiting baffle, a rotating shaft, a piston, a hydraulic five-way valve, an anchoring horizontal pile, a horizontal displacement monitoring device, a power source, an ampere meter, data transmission equipment and a drill bit; and the high slope sliding monitoring device comprises a positioning rod, a sliding surface monitoring unit, a high-strength spring, a guide rod, a steel ejector pin, a pressure position sensor and an upper transmission unit; and an infrared thermal imaging camera and a laser range finder are installed on the unmanned aerial vehicle. The invention further provides an operation method of the monitoring and early warning system. The system has an intelligent early warning function, and the safety of foundation pit engineering construction can be guaranteed.
Owner:THE THIRD ENG CO LTD OF CHINA RAILWAY SEVENTH GRP +1
Microscopic dynamic monitoring device and repairing method for ceramic historical relic painting layer micron-scale crack
ActiveCN105199495AHigh fine resolutionPrecise positioningOptically investigating flaws/contaminationEpoxy resin coatingsMicron scaleDynamic monitoring
The invention discloses a microscopic dynamic monitoring device and a repairing method for a ceramic historical relic painting layer micron-scale crack. The device is formed by connecting a work bench, an ultra depth-of-field microscope, a repairing table, a tripod, a rotating shaft, an adjusting frame screw and a lens. When the ceramic historical relic painting layer micron-scale crack is repaired by the device, a cultural relic is arranged on the rotating shaft; a lens of the ultra depth-of-field microscope is adjusted to amplify a historical relic painting layer; the micron-scale crack is positioned through an image processor; the lens is adjusted by rotating the tripod, so that the image processor clearly displays the crack and then fixes the cultural relic; the crack is repaired with a reattachment repairing agent; and the whole repairing process is recorded and taken. According to the microscopic dynamic monitoring device disclosed by the invention, the painting layer micron-scale crack can be accurately positioned; the crack size can be accurately measured; multi-angle and multi-azimuth observation is achieved; an image and a video in the repairing process can be collected in real time; data and image collection is visual and accurate; and the repaired crack is completely closed and fitted.
Owner:SHAANXI NORMAL UNIV
Automatic real-time measurement device for bending angle of bending machine
ActiveCN103335625AAccurate transmissionAccurate angle measurementMeasurement devicesMeasurement deviceLeft half
The invention discloses an automatic real-time measurement device for a bending angle of a bending machine and aims to solve the technical problems of steel wire flexible deformation, inaccurate transmission and the necessity of extra mechanism for backing to an initial state, in case of a conventional bending angle measurement device in the prior art. The technical scheme adopted is that the device provided by the invention comprises an upper die, a lower die and a workpiece, and further comprises a base and at least one bending angle measurement device body on the base, wherein the bending angle measurement device bodies and the lower die are fixed on the base; the bending angle measurement device bodies are positioned between the lower dies. The measurement device body, in the initial state, comprises a saddle fixed on the base, a guide rod fixed on the saddle, a left half part and a right half part both arranged on the guide rod in a sliding manner, and a tension spring connecting the left half part and the right half part. The device provided by the invention has the advantages that a link mechanism is adopted for accurate transmission, and self-return under the action of gravity is realized; and the bending angle of the overall workpiece is measured in a way of measuring the bending angles of two sides of the bended piece at the same time. Therefore, the automatic measurement device is simple, accurate in transmission, and easy to realize.
Owner:南京埃斯顿软件技术有限公司
Polygonal angle-extensible measurement folding rule and angle measurement method
PendingCN110542357ASimple structureEasy to get materialsAngles/taper measurementsRulers for direct readingLap jointEngineering
The invention provides a polygonal angle-extensible measurement folding rule. The folding rule comprises a graduated frame, a transitional scale and a cuing scale, wherein the graduated frame is of aframe body structure consisting of at least three graduated scales which are movably or fixedly connected end to end; one end of the transitional scale is fixedly connected with the graduated frame, the other end of the transitional scale is in pin-joint with the first end of the cuing scale, and the pin-joint point is located at the center of a circumcircle of the graduated frame; and the secondend of the cuing scale is arranged on the graduated frame in a lap-joint mode, and the length of the cuing scale is greater than or equal to the radius of the circumcircle of the graduated frame. Theinvention further provides an angle measurement method. The method comprises the steps of measurement, reading and the like. The folding rule is simple in structure, materials are convenient to get, and manufacturing cost is low; the graduated frame is formed by sequential pin-joint of the multiple graduated scales, so that the folding rule is convenient to fold and store; the transitional scale and the graduated frame are convenient to disassemble and assemble, so that the folding rule is convenient to carry around; and by setting the graduated scales in different shapes, angle measurement with different precision can be realized, the measurement precision is high, the measurement range is wide, and the angle measurement range from 0 to 360 degrees can be realized.
Owner:长沙六都寨生态农业有限公司
Portable angle ruler
InactiveCN104848756AEasy to carry and useAccurate angle measurementAngles/tapers measurement gaugesEngineeringMeasuring ruler
The invention relates to a measuring ruler, especially a portable angle ruler. The angle ruler comprises a main scale, a graduated scale with scale, and an auxiliary scale. The main scale comprises a first base ruler and a second base ruler. The first base ruler is hinged to one end of the second base ruler, and is hinged to one end of the graduated scale. The second base ruler is equipped with the auxiliary scale. The other end of the graduated scale passes through a chute of the auxiliary scale to be in sliding fit with the chute. The first base ruler, the second base ruler and the graduated scale form an isosceles triangle structure. The isosceles triangle serves as the bottom edge of the isosceles triangle structure. Compared with the prior art, the angle ruler is advantageous in that the angle ruler is portable, is convenient to use, can be folded, is precise in angle measurement, is large in measurement range, can be used for directly reading data, and is low in manufacture cost.
Owner:付润久
Method and device for measuring light beam angle
InactiveCN102914283AEasy to useAccurate angle measurementAngle measurementPresent methodMeasurement device
The invention aims to overcome the defects of the present method, provides a method for measuring a light beam angle and also provides a device for measuring the light beam angle. The method comprises the following steps: amplifying a flare angle of parallel light beam passing by a telescope system relative to a horizontal line; causing the light beam to enter into a photoelectric detector, detecting the position information of the center of the light beam on a sensor by the photoelectric detector, and simply converting the position information, thereby obtaining angle information; simultaneously receiving the information of an electronic level meter and the photoelectric detector by a data processing unit; giving an inclined angle between the axis and the horizontal line in the whole light beam angle measuring device system by the electronic level meter; indirectly giving the inclined angle between a to-be-measured light beam and the axis of the whole light beam angle measuring device system by the photoelectric detector; calculating, thereby obtaining the inclined angle between the to-be-measured light beam and the horizontal line; and performing by using a peripheral circuit, thereby sending a numerical value of the inclined angle between the to-be-measured light beam and the horizontal line to a display unit.
Owner:蓝景恒
Two-degree of freedom serial servo joint structure
InactiveCN106272536ASimple structureReduce manufacturing costProgramme-controlled manipulatorJointsMulti degree of freedomDegrees of freedom
The invention relates to the technical field of multi-degree of freedom joints, in particular to a two-degree of freedom serial servo joint structure. The two-degree of freedom serial servo joint structure comprises a top plate, an inclined plate, a first-degree-of-freedom mechanism and a second-degree-of-freedom mechanism, wherein a through hole for accommodating the inclined plate is formed in the top plate; the first-degree-of-freedom mechanism comprises an electric ejector rod, linkage plates symmetrically arranged at the bottom of the inclined plate, top plate connecting plates symmetrically arranged at the bottom of the top plate, and a first bearing connecting component; the second-degree of freedom mechanism comprises a primary gear, a secondary gear and a motor fixedly connected with the inclined plate, and a second bearing connecting component. The two-degree of freedom serial servo joint structure provided by the invention is simple in structure, low in manufacturing cost, convenient to mount, use and control, relatively high in universality and practicality, long in service life, and convenient to popularize and use.
Owner:CHINA AGRI UNIV
Automatic poling device for telegraph pole
InactiveCN106760898AEasy to installGood function and effectTowersEngineeringUltimate tensile strength
The invention provides an automatic poling device for a telegraph pole and belongs to the technical field of outdoor working tools. The automatic poling device comprises a mounting body, a balancing switch, a poling switch, a loading body, a positioning pole sleeve and a connecting pole sleeve. A balance weight is arranged at one end of the mounting body, the positions, on the two side of a groove, of the other end of the mounting body are each provided with a fixing plate, and the two sides of the bottom of the mounting body are each provided with two hydraulic supporting legs. A first level gauge and a T-shaped perpendicular plate are arranged at the bottom of the mounting body, the T-shaped perpendicular plate is tangent to the outer surface of the longitudinally-perpendicular positioning pole sleeve, and the diameter of a cylindrical hole between the positioning pole sleeve and the connecting pole sleeve is the same with the external diameter of the telegraph pole. The loading body is fixed to the end face of one end of the positioning pole sleeve of the mounting body through connection of threads, and a supporting body is mounted at the bottom of the loading body. The automatic poling device for the telegraph pole is good in effect and high in practicability, the problem that existing mounting of the telegraph pole is high in labor intensity is solved, manpower can be effectively saved, and the labor intensity is lowered; and meanwhile, the telegraph pole can be stably mounted, and functionality is greatly improved.
Owner:JINAN CITY CHANGQING DISTRICT POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
Structure bending moment measuring device under pure bending condition
ActiveCN111024516AAccurate measurementCompact structureMaterial strength using steady bending forcesMaterial strength using steady torsional forcesElectric machineryPure bending
The invention discloses a structure bending moment measuring device under a pure bending condition, and the structure bending moment measuring device is suitable for pure bending loading and bending moment measuring of mechanical parts. The structure bending moment measuring device is mainly composed of two sets of same torque measuring devices, a guide rail and a base, wherein the two sets of torque measuring device are the same in assemblies, and each torque measuring device comprises a rotating shaft, a driving motor, a speed reducer, a torque sensor, an adjustable clamp, a fixing frame, abase, an angle control panel, a jackscrew and a buckle. And the driving motor provides power with controllable size and stable operation for the rotating shaft. The speed reducer, the torque sensor and the adjustable clamp transmit motor power to the two ends of a to-be-tested piece, and pure bending is achieved. According to the device, a loading system and a measuring system are integrated together, so that bending moment at two ends of the test piece is continuously and accurately acquired while pure bending loading of the test piece is realized. Meanwhile, the device is simple to operate and suitable for test pieces of any configuration. The device has certain theoretical significance and practical application value.
Owner:BEIJING UNIV OF TECH
Angle measuring device and equipment with the same
PendingCN110793469AEasy to useAvoid over-tighteningUsing optical meansMechanical measuring arrangementsGear wheelControl theory
The invention relates to the technical field of angle measurement, in particular to an angle measuring device and equipment with the same. The angle measuring device includes: a first support; a driving gear suitable for being fixedly connected with a rotating part of to-be-detected equipment; a driven gear meshed with the driving gear; an encoder comprising an encoder body and an encoder rotatingshaft, wherein the encoder rotating shaft is fixedly connected with the driven gear, and the encoder rotating shaft is suitable for driving the driving gear to rotate to drive the driven gear to rotate under the driving of the to-be-detected equipment so as to drive the encoder rotating shaft to rotate relative to the encoder body; at least one elastic piece, wherein one end of the at least one elastic piece is connected with the encoder body, and the other end of the at least one elastic piece is connected with the first support. By arranging the at least one elastic piece, when the drivinggear and the driven gear are abraded and the axis deviates, the at least one elastic piece can drive the encoder to drive the driven gear to be automatically adjusted to be in the meshed state that the driven gear is matched with the driving gear, the two gears are prevented from being meshed too tightly or not tightly, and normal use of the angle measuring device is guaranteed.
Owner:HUADIAN HEAVY IND CO LTD
A two-degree-of-freedom joint structure
The invention relates to the technical field of multi-freedom-degree joints, in particular to a two-freedom-degree joint structure. The two-freedom-degree joint structure comprises a U-shaped fixed plate, a U-shaped connecting plate, a first-freedom-degree mechanism and a second-freedom-degree mechanism arranged on the U-shaped connecting plate, wherein the U-shaped fixed plate and the U-shaped connecting plate can rotate oppositely. A bottom plate of the U-shaped fixed plate and a bottom plate of the U-shaped connecting plate are arranged oppositely. A first side plate of the U-shaped connecting plate is connected to the inner side of a first side plate of the U-shaped fixed plate through the first-freedom-degree mechanism. A second side plate of the U-shaped connecting plate is rotationally connected to the inner side of a second side plate of the U-shaped fixed plate. The two-freedom-degree joint structure is simple in structure, reasonable in design, convenient to mount, use and control, high in universality and practicability, long in service life and convenient to use and popularize.
Owner:CHINA AGRI UNIV
Real-time automatic measuring device for bending angle of bending machine
ActiveCN103335625BAccurate transmissionAccurate angle measurementMeasurement devicesMeasurement deviceLeft half
Owner:南京埃斯顿软件技术有限公司
Angle sensor
ActiveUS20120153938A1Error minimizationMinimizes valueUsing electrical meansSteering partsAngular degreesControl theory
Disclosed is an angle sensor, which is capable of accurately measuring an angle of a steering shaft by selecting an optimum gear ratio between main and subsidiary gears constituting the angle sensor, measures a rotation amount of a vehicle steering shaft, and includes a ring-shaped main gear rotating along with the steering shaft, a first subsidiary gear rotated by rotation of the main gear and having a magnet coupled to a surface thereof, and a magnetic device detecting a change in magnetic field of the magnet and outputting data on a rotation amount, so that the first subsidiary gear rotates four times while the main gear rotates once, and a value of a scale factor is minimized during a process of acquiring valid data for measuring the angle of the main gear and thereby an error of a measured value is minimized.
Owner:LG INNOTEK CO LTD
Wall-hanging directional fixing device for measuring electrode and measuring method thereof
ActiveCN109655923AFast deploymentEasy to insertElectric/magnetic detectionAcoustic wave reradiationEngineeringRotating disc
The invention relates to a wall-hanging directional fixing device for a measuring electrode and a measuring method thereof. The wall-hanging directional fixing device comprise an anchor rod, a rubberhandrail, a measuring cable hook, a vertical pointer adjusting leveling bubble, a damping fixing rotating disc I, a damping fixing rotating disc II, an electrode sleeve and an angle reader, wherein the rubber handrail is arranged on the upper portion of the right side of the anchor rod; the measuring cable hook is also arranged on the right side of the anchor rod and is arranged on the lower portion of the rubber handrail; an upper connecting supporting rod and a lower connecting supporting rod are vertically arranged on the left side of the anchor rod; the damping fixing rotating disc I is rotatably connected with the upper connecting supporting rod; the vertical pointer adjusting leveling bubble is fixedly connected with the damping fixing rotating disc I; the damping fixing rotating disc II is rotatably connected with the lower connecting supporting rod; and the angle reader and the directional rotating electrode sleeve are fixedly connected to the damping fixing rotating disc II. By the device, the measuring angle of the measuring electrode is accurate, directional data can be accurately collected, and the problem of slope body detection is effectively solved.
Owner:ANSTEEL GRP MINING CO LTD
Four-channel main lobe interference suppression angle measurement method based on feature projection preprocessing
ActiveCN113238192AImplement angle measurementOvercoming the flaws of interferenceWave based measurement systemsSide lobeComputer science
The invention relates to a four-channel main lobe interference suppression angle measurement method based on feature projection preprocessing. The method comprises the following steps of: firstly, filtering main lobe interference in a sampling sample only containing interference noise through feature projection matrix preprocessing, calculating a weight for suppressing side lobe interference through constrained adaptive beam forming, forming a new sum channel, a new pitch difference channel, a new azimuth difference channel and a new double-difference channel, suppressing main lobe interference through a four-channel main lobe suppression monopulse angle measurement technology, detecting a target, and measuring a target angle. According to the method, after main lobe interference is suppressed, angle measurement of the target can be realized, the target can be detected under the conditions of main lobe interference and side lobe interference, and accurate angle measurement can be performed on the target, so that the defect that the traditional four-channel main lobe interference suppression monopulse angle measurement technology can only suppress one main lobe interference theoretically is overcome.
Owner:XIDIAN UNIV
Anti-collision system based on ads-b
ActiveCN109131909BReduce dependenceReduce distractionsAircraft indicatorsAircraft traffic controlInformation processingTimestamp
The invention discloses an ADS-B-based anti-collision system, comprising: an ADS-B information decoding module: used to decode the received ADS-B information broadcast by a neighboring machine, and calculate the position information of the neighboring machine; ADS-B B monitoring and tracking processing module: used to convert the position information of the neighboring machine into the angle of the neighboring machine relative to the own machine, the distance, height and time stamp of the neighboring machine relative to the own machine, and confirm whether the neighboring machine is tracked, and then The tracking information list is sent to the anti-collision information processing sub-module; the anti-collision information processing sub-module is used to use the anti-collision algorithm to process the angle, distance, height and time stamp of the adjacent aircraft in the tracking information list, and make an anti-collision alarm decision-making and traffic alert decision-making. The invention can reduce the dependence on the radio frequency module in the traditional TCAS, simplify the equipment and reduce the cost, and is more suitable for light aircraft or unmanned aerial vehicles. At the same time, the frequency of query sending is reduced, and the interference to the airspace wireless environment is reduced.
Owner:CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
Device and method for measuring azimuth angle and rotating speed of wind wheel of wind turbine based on ball switch
ActiveCN113803221AAccurate angle measurementAccurate measurement of angular velocityWind motor controlMachines/enginesTurbine bladeAngular velocity
The invention provides a device and method for measuring the azimuth angle and the rotating speed of a wind wheel of a wind turbine based on a ball switch. The device comprises the ball switch and a signal processing terminal which is in communication connection with the ball switch. The ball switch is arranged at a position corresponding to a wind turbine blade of the wind turbine. By arranging the ball switch in a hub of a wind generating set, the attitude angle and the angular velocity of the wind wheel of the wind turbine are accurately measured, the structure is simple, implementation is easy, the measurement precision is high, and the use requirements of high-power and offshore units can be met. Effective, timely and stable detection of the azimuth angle of the wind wheel of the wind turbine can be achieved, independent variable pitch control can be achieved, the purpose of reducing the fatigue load of a unit can be achieved, and the service life of the unit is prolonged.
Owner:CRRC WIND POWER(SHANDONG) CO LTD
Round ruler
InactiveCN103204020AAccurate measurementAccurate angle measurementCircular curve drawing instrumentsStraightedgesEngineering
The invention discloses a round ruler comprising a round frame, a cross frame and an indicator. The round frame and the cross frame are integrated. A connecting post is arranged at the center of the cross frame. The cross frame and the indicator are in key joint through the connecting post. The vertical projection of a pinpoint of the indicator to the round frame just falls on the inner frame line of the round frame. Scales are marked on the round frame. The round frame can be used for drawing circles. Due to the joint of the cross frame and the indicator, the round ruler can be used as an angel gauge. The cross frame can be used for drawing auxiliary lines. The indicator just points to the inner side of the round frame, so that errors can be reduced during angle measuring.
Owner:张汉兵
Thread detection system for underwater stay horizontal type granulator and detection method thereof
InactiveCN108189267ASo as not to damageSave guide slot spaceRadiation pyrometryUnderwaterContact mode
The invention discloses a thread detection system for an underwater stay horizontal type granulator. The thread detection system comprises a thread detection device which is arranged above a startinghead in a non-contact mode and is relatively parallel to the starting head. The thread detection device comprises an upper bracket, a lower bracket, a right installation plate, a left installation plate and infrared thermometers; infrared probes of the infrared thermometers face towards a discharging outlet of a casting strip head; a fan-shaped rail for conveniently adjusting the angle of the infrared probe is formed between the right installation plate and the left installation plate, and the angle of the fan-shaped rail is 0-90 degrees; and the infrared probes are uniformly distributed on the fan-shaped rail. The thread detection system achieves non-contact thread detection and is high in detection precision, good in control effect, high in instantaneity and capable of quickly and accurately reflecting the thread state and judging whether the melt stacking phenomenon occurs or not, accordingly, the chain reaction halting is efficiently controlled in real time, the granulator is protected from being damaged or little damaged, intelligentization and automation are achieved, the space is saved, installation is convenient, the reliability is high, and the cost is greatly reduced.
Owner:CAMALUOYANGELECTROMECHANIC
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