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62 results about "Radar navigation" patented technology
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Marine and aviation radar systems can provide very useful navigation information in a variety of situations. When a vessel is within radar range of land or special radar aids to navigation, the navigator can take distances and angular bearings to charted objects and use these to establish arcs of position and lines of position on a chart. A fix consisting of only radar information is called a radar fix.
Unmanned-gyroplane system used for automatic-inspection of bridges and tunnels and navigation method
ActiveCN104843176AFlexibleEffective dodgeNavigation by speed/acceleration measurementsSatellite radio beaconingUncrewed vehicleNavigation system
The invention provides an unmanned-gyroplane system used for automatic inspection of bridges and tunnels and a navigation method, belonging to the field of automatic detection of bridge and tunnel diseases. According to the invention, aimed at the characteristics of bridge and tunnel areas, the unmanned gyroplane inspection system which realizes autonomous navigation in virtue of GPS, laser radar and IMU is designed; and the system realizes autonomous inspection of an open bridge area by using a GPS navigation system and autonomous inspection of a closed tunnel area by using a laser radar navigation system, dodging of bridges, tunnels and motor vehicles via an automatic evadible system, and shooting of images of key areas, wherein the images are sent back to a ground station, and thematic pictures of diseases of bridge and tunnels are generated by the ground station and provided to related personnel for use. The unmanned-gyroplane system provided by the invention has the characteristics of mobility and flexibility in the process of inspection and has the advantages of a wide inspection coverage area, unblocking of traffic, real-time returning of live shots, etc.
Owner:恒华数元科技(天津)有限公司
Navigation method of pilotless automobile
InactiveCN102393744AAchieving Robust ControlStability Navigation ControlPosition/course control in two dimensionsGeolocationGps navigation
A navigation method of pilotless automobile is disclosed. The method comprises the following steps: (1) integrating three kinds of navigation strategies: vision navigation, radar navigation and GPS navigation; (2) calculating current geographical location information of an automobile according to an electronic map and a GPS signal; (3) selecting the navigation strategy according to the current geographical location information of an automobile: a priority of the vision navigation strategy is the highest, and if road boundary information perceived and identified by a vision navigation module corresponding to the vision navigation strategy is inaccurate and instable, the radar navigation strategy is the priority; if obstacle information identified by a laser radar detection module corresponding to the radar navigation strategy is inaccurate and instable, the GPS navigation strategy is selected. By using the method of the invention, a principle is simple; an applicable scope is wide; navigation precision is high; controllability and reliability are good. The method has many other advantages.
Owner:HUNAN UNIV
Positioning method and mobile robot based on multiple navigation modules
InactiveCN106918830AExtended suitable operating environmentOvercome limitationsSatellite radio beaconingElectromagnetic wave reradiationLongitudeGps navigation
The invention discloses a positioning method and mobile robot based on multiple navigation modules. A mobile robot includes a GPS navigation module, an inertial navigation module, and a laser radar navigation module. The method includes the following steps: the GPS navigation module converting the longitude and latitude coordinates at the t-1 moment and t moment to coordinate values in an X-Y coordinate system; the inertial navigation module obtaining changes to a yaw angle of the mobile robot through signal information corresponding to the t-1 moment and the t moment; acquiring scanning data of the laser radar navigation module at the t-1 moment and t moment; obtaining the inertial navigation pose and laser pose of the mobile robot at the t moment in combination with a motion model of the mobile robot that is established in advance; fusing the inertial navigation pose and the laser pose of the mobile robot in combination with the environment road sign information, obtaining the current pose of the mobile robot at the t moment. According to the invention, no need is required for arranging any other apparatus in the field, and real-time positioning of the body of the mobile robot can be realized and the positioning precision is increased.
Owner:ANKE SMART CITY TECH PRC
Method for designing array antenna with circular aperture field distribution based on Sinc function
The invention discloses a method for designing an array antenna with circular aperture field distribution based on a Sinc function. An antenna array is distributed on a circular aperture, and aperture fields are distributed on a concentric circle array composed of more than two concentric circles. Antenna units are arranged on each concentric circle, the number of the antenna units on the same concentric circle is at least 4 and is an even number, and the antenna units are uniformly distributed in a central symmetry mode. The aperture field distribution is regulated through a parameter weighting method based on the Sinc function, and the continuous aperture field distribution shaped with wave beams of different kinds is obtained. The radius and the excitation of each concentric circle in the concentric circle array corresponding to the wave beams of different kinds are obtained by calculating through a discrete method. The method avoids a complex and unordered multidimensional optimization process, and a realization method of deterministic and fast array antenna layout and excitation parameters is obtained. The method can be widely applied to analysis and design of array antennas such as phased array radar and navigational satellite, and the fast shaping of wave beams under different occasions is realized.
Owner:ZHEJIANG UNIV
Robot positioning device and method based on cross laser and machine vision
ActiveCN110231036AMake up for the lack of navigation accuracyAccurate HandoverNavigational calculation instrumentsElectromagnetic wave reradiationVision processingMachine vision
The invention discloses a robot positioning device and method based on cross laser and machine vision. The robot positioning device comprises a first robot, a second robot, a cross laser, a camera, across laser line, a vision processing system and a second robot control system, wherein the cross laser is arranged on the first robot, the cross laser irradiates the cross laser line on the ground, and the camera is arranged on the second robot; image acquisition and processing are carried out on the cross laser line through the camera, an offset angle and the offset are obtained, and the visualprocessing system outputs a computed result to the second robot control system, so that the second robot can adjust the pose relative to the first robot, and a purpose of accurately grabbing materialsor conveying materials is achieved, and thus the defects of navigation precision of a traditional laser radar navigation technology are overcome, the cost is reduced, and the operation convenience isimproved.
Owner:GUANGDONG BOZHILIN ROBOT CO LTD
Unmanned aerial vehicle autonomous navigation system and navigation method
The invention discloses an unmanned aerial vehicle autonomous navigation system and a navigation method. The system comprises a parameter navigation module, a radar navigation module, a central processing module, an information storage module and a heading control module, wherein the parameter navigation module comprises a GPS receiver, an angular rate gyroscope, an IMU module, a rudder deflection potentiometer, an image acquisition unit and a timer. The navigation method comprises the following steps: when GPS signals are instable or are lost transiently, state parameters outputted by the parameter navigation module are processed in the central processing module to obtain flight parameters; when the GPS signals are lost for a long time and the parameter navigation module can not be used for navigation, the radar navigation module is used for navigation; and when the GPS signals are lost for a long time, the parameter navigation module fails and radar signals can not be received, the central processing module is used for path planning. The system and the method provided by the invention can provide accurate navigation for the unmanned aerial vehicle in a condition without GPS signals.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
All-terrain all-source combined navigation system for intelligent agricultural machinery
InactiveCN109115223AImprove accuracyImprove intelligenceNavigational calculation instrumentsNavigation by terrestrial meansTerrainData synchronization
The invention discloses an all-terrain all-source combined navigation system for intelligent agricultural machinery and relates to the field of agricultural machinery operation. The all-terrain all-source combined navigation system comprises a laser radar navigation module, a Beidou satellite navigation module, an inertia navigation module, a visual navigation module, a route planning system, a data management module, a comprehensive environment sensing module and a navigation mode switching module, wherein the comprehensive environment sensing module can obtain environment data provided by alaser radar navigation system and a visual navigation system to construct a high-accuracy electronic map and can perform terrain match with navigation data; the data management module specifically comprises a data processing unit, a data synchronizing unit, a data sending unit and a data fusing unit and can provide high-accuracy and high-quality navigation data superior to a single sensor; the navigation mode switching module is mainly formed by a light intensity sensor, a satellite signal detection sensor, operation environment data and the like and can provide reference for navigation mode switching decision.
Owner:JIANGSU UNIV
Autonomous navigation system for drone and navigation method of autonomous navigation system
ActiveCN106352872ANavigation instrumentsSatellite radio beaconingAutonomous Navigation SystemState parameter
The invention discloses an autonomous navigation system for a drone and a navigation method of the autonomous navigation system. The system comprises a parameter navigation module, a radar navigation module, a central processing module, an information storage module and a course control module, wherein the parameter navigation module, the radar navigation module and the information storage module outputs information to the central processing module, the information is processed optionally, and the processed information is output to the course control module for navigation. The navigation method includes: when a GPS signal is instable or lost temporally, the parameter navigation module outputs state parameters to the central processing module, and the state parameters are processed to obtain flight parameters; when the GPS signal is lost for a long time and the parameter navigation module fails, the radar navigation module is used to output course information; when the GPS signal is lost for a long time, the parameter navigation module fails and a radar signal cannot be received, the central processing module is used to perform route planning. By the system and the method, accurate navigation can be provided for the drone when the GPS signal is lost.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Marine navigation radar enhancing infrared and visible light
InactiveCN104215963AImprove navigation performanceGood for observationRadio wave reradiation/reflectionInformation processingRadar systems
The invention relates to a marine navigation radar enhancing infrared and visible light, in particular to a marine navigation radar comprising a marine wireless navigation radar system, an infrared thermal imaging system and a visible light imaging system. The signal output end of the marine wireless navigation radar system is connected to a display and control terminal; the display and control terminal is connected to the signal output ends of the infrared thermal imaging system and visible light imaging system and receives radar image signals of the marine wireless navigation radar system, infrared video signals of the infrared thermal imaging system and visible light video signals of the visible light imaging system, and comprehensive display of the three varieties of the signals is implemented through information processing and combining. On the basis of an existing wireless navigation radar, the infrared thermal imaging system and the visible light imaging system are added, the function of the display and control terminal of the existing radar is expanded, the combination of three imaging manners is realized, the radar navigating capability under the radio disturbance is improved greatly, and safe driving of sailing ships is benefited.
Owner:INESA ELECTRON
Intelligent detection method for multiple types of diseases of near-water bridge and unmanned ship equipment
PendingCN112884760ASimple methodNovel Attention ModuleImage analysisNeural architecturesDiseaseGround station
The invention discloses an intelligent detection method for multiple types of diseases of a near-water bridge and unmanned ship equipment. According to the method, an infrastructure disease target detection network CenWholeNet and a parallel attention module PAM based on the bionic thought are included, and the CenWholeNet is an Anchor-free target detection network based on deep learning, mainly comprises a backbone network and a detector and is used for automatically detecting diseases in collected images with high precision. The PAM introduces an attention mechanism into the neural network, comprises two parts of space attention and channel attention, and is used for enhancing the expression ability of the neural network. The unmanned ship equipment comprises a ship body module, a video acquisition module, a laser radar navigation module and a ground station module, supports laser radar navigation without GPS information, remote real-time transmission of video information and high-robustness real-time control, and is used for automatically acquiring bridge bottom information. The method can be widely applied to disease detection of areas with weak GPS signals and complex environment, such as the bottoms of small and medium-sized bridges.
Owner:SOUTHEAST UNIV
Visual navigation and positioning method for rendezvous and docking based on coded targets
InactiveCN105659821BStationarity is not requiredHigh precisionInstruments for comonautical navigationPositioning technologyVisual perception
The invention belongs to the technical field of navigation and positioning based on image pattern recognition and computer, and discloses a rendezvous and docking visual navigation and positioning method based on coded targets. The present invention obtains the three-dimensional coordinates of the template points and feature points on the coded target under the CCD1 coordinate system through the design and identification of the coded target, and calculates The conversion parameters between the target spacecraft coordinate system and the CCD1 camera coordinate system are obtained, combined with the installation parameters of the CCD1 camera on the tracker, the relative position and attitude of the target relative to the tracker are obtained. Adopting the present invention to carry out navigation and positioning in the rendezvous and docking approach section does not require the radar navigation results of the short-distance guidance section, and the recognition results are not affected by the radar navigation results; the present invention can be used to produce different numbers of coded targets and install them on the space station. The accuracy and reliability of relative positioning between the tracker and the target can be improved.
Owner:BEIJING AEROSPACE CONTROL CENT
High-speed large-capacity I/Q data recorder based on multi-channel LVDS interface
The invention relates to an I / Q data recorder, in particular to a high-speed large-capacity I / Q data recorder based on a multi-channel LVDS interface. The high-speed large-capacity I / Q data recorder solves the problem that an existing I / Q data recorder is low in universality, low in recording rate and insufficient in storage capacity. The high-speed large-capacity I / Q data recorder based on the multi-channel LVDS interface comprises an I / Q data recording control module, an embedded computer main board, a high-capacity storage module, a touch display device and a power supply management module, wherein the I / Q data recording control module comprises a trigger signal management module, a data receiving module and a master control module; the embedded computer main board comprises a USB interface, a PCI-E interface, an Internet access, a VGA interface, a microprocessor and a main board memory; and the high-capacity storage module comprises a solid-state hardware. The high-speed large-capacity I / Q data recorder is suitable for the fields such as radar, navigation, military communication and electronic countermeasure equipment system detection.
Owner:ZHONGBEI UNIV
Opening rectangular ring loaded microstrip slot coupling metasurface antenna
PendingCN113540810AWide Impedance BandwidthEnables wide beamwidth radiationSimultaneous aerial operationsAntenna earthingsWide beamDielectric substrate
The invention relates to the technical field of metasurface antennas, in particular to an open rectangular ring loaded microstrip slot coupling metasurface antenna which comprises a metasurface structure layer and a feed grounding layer. The metasurface structure layer comprises a metasurface dielectric substrate, an open rectangular ring and a patch layer unit, and the open rectangular ring and the patch layer unit are arranged on the surface of the metasurface dielectric substrate. The feed grounding layer comprises a feed medium substrate, a grounding metal plate and a metal feed microstrip line. The antenna meets the characteristics of low profile, wide band, wide beam width and low profile, and can be applied to many fields of mobile communication systems, radar navigation, satellite communication and the like.
Owner:NAT SPACE SCI CENT CAS
Laser radar navigation method and laser radar navigation device
InactiveCN106646504ARealize 360-degree all-round inspectionRealize all-round detectionElectromagnetic wave reradiationPoint cloudDistance detection
The invention discloses a laser radar navigation method and a laser radar navigation device. A main control structure is used to transmit a starting instruction to a driving structure and a distance detection device, and a driving structure is used to drive a driving board to rotate, and is used to drive the distance detection device to rotate from an initial azimuth to detect an object disposed in front of the distance detection device, and the distance data at different azimuths is acquired. An angle detection device is used to detect deviation angles between the different azimuths and the initial azimuth of the distance detection device to acquire angle data. The main control structure is used to receive the distance data and the angle data, and is used to integrate the distance data and the angle data of every azimuth to acquire the integrated data of every azimuth. A PC is used to receive all of the integrated data to generate point cloud data. The PC is used to superpose and splice the point cloud data, and is used to generate a map after removing superposed data, and then a navigation function is realized by combining with a navigation algorithm.
Owner:湖南晖龙集团股份有限公司
Multifunctional radar navigation bracing frame apparatus
InactiveCN108983152AImprove the effect of receiving signalsWave based measurement systemsEngineeringFuselage
The invention relates to a radar bracing frame, and more specifically relates to a multifunctional radar navigation bracing frame apparatus. The multifunctional radar navigation bracing frame apparatus includes a damping wheel mechanism, a fuselage mechanism, a lifting bracket mechanism, and a rest folding seat mechanism. The multifunctional radar navigation bracing frame apparatus can provide support for a radar, can move the radar, can adapt to the rugged road condition, and can rotate and lift the radar, so as to improve the capability of receiving signals for the radar. Besides, when an operating position is limited, the multifunctional radar navigation bracing frame apparatus can move the lateral position of the radar to improve the capability of receiving signals, on the premise of not moving the multifunctional radar navigation bracing frame apparatus. The multifunctional radar navigation bracing frame apparatus can provide a seat, wherein the damping wheel mechanism is locatedbelow the fuselage mechanism; the connection mode between the damping wheel mechanism and the fuselage mechanism is bolted connection; the lifting bracket mechanism is arranged inside the fuselage mechanism; the connection manner between the lifting bracket mechanism and the fuselage mechanism is bolted connection; the rest folding seat mechanism is located on the outer wall of the right side of the fuselage mechanism; and the connection mode between the rest folding mechanism and the fuselage mechanism is welded connection.
Owner:张兆雷
Randomness testing method of pseudorandom sequence based on packet handling
InactiveCN101692616AImprove comprehensivenessMake up for the singularityTransmitter/receiver shaping networksGreek letter epsilonQuadratic nonlinearity
The invention discloses a randomness testing method of pseudorandom sequence, belonging to the testing field. The method aims to solve the problem that the testing of randomness characters is limited and unilateral in the existing randomness testing method. The method comprises the following steps: firstly performing grouped linear mapping or grouped cascade linear mapping or odd integer grouped second nonlinear transformation or grouped majority voting or grouped modulo 2 additon to a sequence to be tested to obtain a new sequence after grouping process; then selecting set pair standard sequences for statistics to obtain standard statistics value DEV; counting the new sequences after grouping process to obtain new sequence statistics value dev; then calculating to obtain the biggest distance D between the standard statistics value DEV and the new sequence statistics value dev; and finally comparing the biggest distance D and the distance standard value D epsilon to judge whether the tested sequence satisfy the randomness or not. The testing method of the invention has the advantage of comprehensive testing result, reliable use and effective effect and can be widely used in fields such as measurement and range-finding, spread spectrum communication, radar navigation and data security.
Owner:XIDIAN UNIV
Method for laser radar navigation of four-rotor aircraft in continuous multilateral geometric environment
ActiveCN108562289AStable flightNavigational calculation instrumentsNavigation by speed/acceleration measurementsMarine navigationRadar navigation
The invention discloses a method for laser radar navigation of a four-rotor aircraft in a continuous multilateral geometric environment, belonging to the fields of autonomous navigation and guidance.The method can be used for the navigation of the four-rotor aircraft in the multilateral geometric environment; a laser radar installed on the four-rotor aircraft is combined with an inertial sensor,so that navigation information is generated, and the multi-rotor aircraft is enabled to fly in the center of gravity of the multilateral geometric environment. According to the method, the multilateral geometric environment is identified by means of the laser radar, so that the relative distances and orientations between the four-rotor aircraft and all the sides of the environment can be estimated. The information estimated by the laser radar and the inertial sensor are subjected to data fusion by means of a filter, so that the position, velocity and attitude information of the four-rotor aircraft can be obtained. Then, the center of gravity of the geometric environment is calculated by means of data measured by the laser radar, so that the four-rotor aircraft is enabled to fly at the geometric center of gravity. The method enables the four-rotor aircraft to fly safely and stably in the multilateral geometric environment.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Novel multifunctional radar navigation auxiliary device
InactiveCN109188415AAvoid direct raysHeight adjustableRadio wave reradiation/reflectionMobile deviceRadar navigation
The invention relates to a radar navigation auxiliary device, in particular to a novel multifunctional radar navigation auxiliary device. The novel multifunctional radar navigation auxiliary device can effectively perform shock absorption during movement or transportation, and the novel multifunctional radar navigation auxiliary device is provided with a moving part capable of moving. The novel multifunctional radar navigation auxiliary device can be retracted into a box shape when not in use, can rotate to avoid direct sunlight, can adjust the height, and is suitable for people of various heights. A radar navigation fixing device is fixedly connected with lifting control devices, and a lifting device fixing bottom plate is fixedly connected with the lifting control devices. The lifting device fixing bottom plate is fixedly connected with shock absorption devices, and a shock absorption device fixing bottom plate is fixedly connected with the shock absorption devices. The shock absorption device fixing bottom plate is fixedly connected with radar navigation rotating devices, and fixing clamping hooks are fixedly connected with a radar retracting device. Mobile devices are fixedly connected with the radar retracting device, and the radar retracting device is in contact with mobile device fixing pins. The mobile devices are in contact with the mobile device fixing pins.
Owner:张淑芝
Litchi visual picking robot based on laser radar navigation and implementation method thereof
PendingCN114830915ASolve the problem that the size must be fixedImprove recognition rateProgramme-controlled manipulatorPicture interpretationLychee fruitEngineering
The invention discloses a litchi visual picking robot based on laser radar navigation and an implementation method thereof. The litchi visual picking robot comprises a navigation mechanism, a carrying mechanism, a lifting mechanism, a power source, a mechanical arm, a binocular vision mechanism, a tail end executing mechanism, a control cabinet and a fruit collecting device. The navigation mechanism is installed at the front end of a vehicle body bottom plate of the carrying mechanism. The lifting mechanism is mounted on a vehicle body bottom plate of the carrying mechanism; the mechanical arm, the power supply and the control cabinet are mounted on a working platform of the lifting mechanism; the binocular vision mechanism is installed on the end effector fixing piece. The tail end executing mechanism is mounted at the tail end of the mechanical arm; the fruit collecting device is installed on the side face of the lifting mechanism. The device can accurately recognize litchi stems and automatically pick the litchi stems, and is high in picking efficiency, simple in overall structure and high in automation and intelligence degree.
Owner:SOUTH CHINA AGRI UNIV +2
Map construction method of laser radar trolley in slope environment
The invention discloses a map construction method of a laser radar trolley in a complex slope environment, and aims to solve the problem that the SLAM composition and autonomous navigation capabilityof complex laser radar is poor. Firstly, laser radar data is preprocessed, and data exceeding the effective range of a laser radar is eliminated. Then, predicted navigation information of a laser radar trolley is recursively derived according to the data of an accelerometer and a gyroscope and is transmitted to a slope algorithm for laser radar data correction, and Kalman fusion filtering is performed to obtain the navigation information of the laser radar trolley. Finally, an environment map is updated according to the filtered navigation information of the laser radar trolley. In a complex slope environment, through the SLAM method disclosed by the invention, laser radar navigation information with higher precision can be obtained, and an accurate map can be drawn.
Owner:HANGZHOU NORMAL UNIV QIANJIANG COLLEGE
Autonomous operation robot chromatic aberration navigation control method
ActiveCN107390702AHigh control precisionIncrease control flexibilityPosition/course control in two dimensionsControl systemSimulation
The invention discloses an autonomous operation robot chromatic aberration navigation control method. The method comprises the steps of prefabricating a navigation circuit, configuring robot operation nodes, configuring a robot and performing positioning operation on the robot. The method is low in cost and high in control progress, on the one hand, control precision and control flexibility of navigation operation in the operation process of the autonomous operation robot are effectively improved, and the operation cost of the navigation control system of the autonomous operation robot is lowered; on the other hand, the method can be implemented in cooperation with systems such as existing satellite navigation and range radar navigation, the navigation control operation precision of the robot can be improved, the equipment general type is high, and therefore the reliability, flexibility and stability of robot equipment operation are effectively improved, and the operation and maintenance cost of the navigation system are effectively lowered.
Owner:鄄城睿鹰制药有限公司
Novel multifunctional radar navigation externally-connected supporting frame for vehicle
PendingCN108674331AFully adjustable fixed spaceEasy to installVehicle componentsFixed frameContact mode
The invention relates to a radar navigation tool, in particular to a novel multifunctional radar navigation externally-connected supporting frame for a vehicle. The novel multifunctional radar navigation externally-connected supporting frame comprises a navigation fixing frame, a universal rotating wheel, a base connecting piece and a double-fixing base. The fixed space of the novel multifunctional radar navigation externally-connected supporting frame can be adjusted in all directions, and the novel multifunctional radar navigation externally-connected supporting frame is suitable for navigation devices with various sizes, has two fixing modes, is suitable for different vehicle models and is convenient to mount. The navigation fixing frame and the universal rotating wheel are connected ina fixed contact mode through fastening screws, the universal rotating wheel and the base connecting piece are connected in a fixed contact mode through fastening screws, and the base connecting pieceand the double-fixing base are connected in a movable contact mode through fastening bolts.
Owner:张兆雷
Composite visual laser navigation system for autonomous driving of robot vehicle, and control method for composite visual laser navigation system
InactiveCN108153308ARealize Perceptual ReconstructionSuitable for positioning operation needsPosition/course control in two dimensionsLaser transmitterTime delays
The invention discloses a composite visual laser navigation system for the autonomous driving of a robot vehicle, wherein the system can effectively achieve a three-dimensional environment sensing fusion function based on multi-sensing information, and improves the control precision. The technical scheme of the invention is that the system comprises a case (2); the system is characterized in thatthe upper end of the case (2) is provided with a laser radar rotor (1); the laser radar rotor (1) is provided with a laser emitter (7) and a laser emission time delay receiver (8); an outer side plateof the case (2) is provided with a USB high-definition camera (5) and a supersonic range finder (6); the interior of the case (2) is provided with a laser radar navigation system embedded control unit and a stepping motor (4). The invention also discloses a control method for the system.
Owner:北京鼎盛光华科技有限责任公司
Phase-shifted overlapping anti-interference method for acoustic surface wave electric power temperature measurement collector
The invention relates to a phase-shifted overlapping anti-interference method for an acoustic surface wave electric power temperature measurement collector. By the aid of the fixed phase relationship among transmitting signals and temperature measurement tag echo signals, radio-frequency signals are repeatedly transmitted, the phase of the transmitting signals is transformed by one fixed value every time, and the acquired echo signals are overlapped, energy of effective echo signals is improved, so that resistance to fixed interference of an acoustic surface wave electric power temperature measurement system is improved. The method includes the steps: 1) repeatedly transmitting the radio-frequency signals to a temperature measurement sensor on a tested device by a collector antenna for 64 times; 2) receiving the echo signals reflected by the acoustic surface wave temperature measurement sensor on the related tested device by the collector antenna; 3) processing the echo signals by a DSP (digital signal processor) control unit; 4) eliminating interference signals reflected by the DSP control unit, and reserving the echo signals of a normal resonator. The method has the advantages that the interference signals larger than normal signals are processed, the method is used for the field of radar navigation and detection, and the interference resistance of the system can be improved.
Owner:BEIJING TH SUNRISE INNOVATIVE TECH
Navigation mark with annular phased-array radar
InactiveCN102514694BHigh gainPromote absorptionWave based measurement systemsAntenna arraysMarine engineeringTower
The invention relates to a navigation mark with an annular phased-array radar, comprising a navigation-mark ship, wherein a navigation-mark lamp and a navigation-mark tower are disposed on the navigation-mark ship, and the navigation-mark lamp is connected with the navigation-mark ship via the navigation-mark tower. The navigation mark with an annular phased-array radar further comprises a phased-array radar with a plurality of phased-array antennas, wherein the phased-array antennas are disposed on the navigation-mark tower around the navigation-mark tower to form an annular phased-array antenna layer. The navigation mark disclosed by the invention has the following advantages that: 1, a radar navigation mark low in energy consumption and high in reliability is provided, and via the radar navigation mark, ships know the situations of ships and channels around water body, so that the ships smoothly finish navigation, and safety is ensured; 2, the phased-array antenna layer is fixed below the navigation-mark lamp, and by means of static fixation, the rotation wear of mechanical device and circuit is reduced, the reliability of radar is enhanced, and the cost of radar is decreased; and 3, metal discs are installed on the upper surface and the lower surface of the phased-array antenna layer, and used for preventing electromagnetic wave from being absorbed by water body, so that the gains of phased-array antennas are increased.
Owner:WUHAN UNIV OF TECH
Petrochemical multi-dimensional perception inspection robot and power supply system thereof
PendingCN111506065AEasy to sendAvoid pollutionPosition/course control in two dimensionsVehiclesControl cellPetrochemical
The invention relates to the technical field of industrial inspection robots and discloses a petrochemical engineering multi-dimensional perception inspection robot and a power supply system thereof.The power supply system comprises a main power supply and a standby power supply; the main power supply is coupled with a voltage transformation plate; the standby power supply and the voltage transformation plate are both coupled with a voltage selection unit; a central control platform and a communication unit are coupled with the voltage selection unit; and a detection element, a drive controlunit, a laser radar, a GPS navigation system and a distance measuring device are all coupled with the voltage transformation plate. The standby power supply is adopted; the central control platform and the communication unit are coupled with the main power supply and the standby power supply through the voltage selection unit, so that the standby power supply can still supply power to the centralcontrol platform and the communication unit in case of emergency, and the fault location of an inspection robot can be conveniently sent to a remote control center, so that the inspection robot can wait for rescue.
Owner:海隆石油集团(上海)信息技术有限公司 +1
Explosion-proof laser radar navigation device
The invention belongs to the technical field of laser navigation, and relates to an explosion-proof laser radar navigation device. The device comprises an explosion-proof shell fixedly connected witha radar base, window pipes and a laser radar sensor are installed in the explosion-proof shell, the bottoms of the window pipes are pressed through a pressing ring, and the window pipes are bound to the periphery of the explosion-proof shell through epoxy resin; the laser radar sensor is fixedly installed on a pressing plate, and the pressing plate is fixedly connected to the pressing ring throughan internal grounding device; a wire outlet is formed in the bottom of the radar base; and a cable of the laser radar sensor extends out of a sealing device and a wire pressing joint through the wireoutlet. An explosion-proof laser radar accords with the IP65 sealing level, can adapt to various harsh environments, and avoids influence on safe, reliable and stable operation of the sensor due to short circuit of an internal circuit caused by water input; and via application of the device the, on-site construction intensity and cost are greatly reduced, autonomous three-dimensional scanning modeling can be realized, and accurate arrival at a specific task point can be realized by means of a three-dimensional virtual track.
Owner:XIAN ANCN INTELLIGENT INSTR
Three-dimensional laser radar navigation method and equipment in glass scene based on deep learning
ActiveCN111982124ASolve technical problems of inaccurate positioningEfficient integrationNavigational calculation instrumentsNeural architecturesVoxelPoint cloud
The invention discloses a three-dimensional laser radar navigation method and equipment in a glass scene based on deep learning. The navigation method comprises the following steps: performing offlinetraining to obtain a glass recognition deep neural network and an optical characteristic deep neural network; in the navigation process, inputting the glass probability recognized by the glass recognition deep neural network and the calculated glass direction into a space voxel map in real time; in a space voxel map containing the glass probability and the glass normal vector, simulating a laserbeam emitted by the laser radar by adopting a light projection method, obtaining the probability that the laser beam transmits the glass based on an optical characteristic deep neural network to screen radar points, and generating a simulated point cloud set; and finally, based on the real three-dimensional radar data and the simulation point cloud set, calculating the absolute pose of a robot inthe space voxel map by adopting normal distribution transformation. According to the navigation method, perception confusion based on laser radar positioning can be avoided, and the three-dimensionalnavigation precision of the mobile robot in a glass scene is improved.
Owner:HUAZHONG UNIV OF SCI & TECH
Navigation mark with annular phased-array radar
InactiveCN102514694AImprove reliabilityLow costWave based measurement systemsAntenna arraysMarine engineeringTower
Owner:WUHAN UNIV OF TECH
Automatic robot navigation method based on aircraft landing gear
PendingCN107885195AImprove navigation and positioning accuracyIncrease autonomyAutonomous decision making processPosition/course control in two dimensionsControl systemAircraft landing
The invention discloses an automatic robot navigation method based on an aircraft landing gear. The automatic robot navigation method comprises the following steps: starting monitoring after an aircraft enters a runway; equipping a color sensing device on the aircraft landing gear, setting colored runways on two sides of the runway, performing automatic adjustment and control by the color sensingdevice by virtue of an aircraft control system when the color sensing device equipped on the aircraft landing gear senses deviation, and determining a safe path from a current position to a takeoff position. According to the automatic robot navigation method disclosed by the invention, a momentary position of the aircraft in the takeoff process is determined, and aircraft runway motion decision-making is performed by virtue of multiple precise calculations and analysis, so that aircraft navigation can be automatically guided, the aircraft can take off within accurate time according to a presetrunway route, and the preset navigational duty is safely completed. The automatic robot navigation method is high in autonomy, reliable in operation and capable of realizing continuous operations, panoramic radar navigation is not limited by meteorological conditions, and the navigation positioning precision is high.
Owner:杜一特(珠海)飞行服务有限公司
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