312results about How to "Extend the scan range" patented technology

The invention provides a three-dimensional measurement device for a driving range and an evaluation system for the driving range. A three-dimensional measurement device based on a rotary laser radar and a camera is included; three-dimensional laser scanning is realized by the motor rotary single-line or four-line laser radar and image characteristics of the monocular camera are matched with a position posture change of an evaluation platform; and a three-dimensional point cloud of a surrounding is generated by motion compensation. A three-dimensional evaluation method for the driving region comprises the following steps: fusing data of the camera and the laser radar; and establishing traversing analysis of the possibility and evaluating the driving region. Compared with the international similar three-dimensional measurement device, the device has the characteristics of low cost, lower domestic difficulties and the like, and is easy to maintain and hide; and the evaluation on the driving region of a complicated cross-country environment can be effectively realized.

The invention provides a scanning method of a tracking type three-dimensional scanning device. The scanning method comprises feature capturing, coordinates matching, conversion matrix calculating anddemarcation. The invention further relates to a scanning system of the tracking type three-dimensional scanning device. The scanning system comprises a three-dimensional sensor which comprises a firstimage acquisition device and a first target feature which can be captured of a tag point, a calibration reference machine which comprises a second target feature which can be captured of a tag point,a tracker and a computing element which comprises a two-dimensional image feature calculator, a coordinate matcher and a calibration calculator. The invention further relates to a storage medium andequipment. A tracking type capture mode is adopted, the calibration process is quick, positioning accuracy is high, stability is excellent, calibration is convenient and quick, and application range is wide. The scanning range is enlarged, scanning application flexibility is improved, and blind area scanning is achieved. Technical bases are provided for three-dimensional scanning and measuring operation of large and complex objects to be scanned based on the tracking type three-dimensional scanning device.

The invention discloses a method of using intelligent glasses for vehicle maintenance, which belongs to the field of vehicle maintenance and aims at solving the technical problem that as intelligent glasses can not be used for vehicle maintenance, intelligence is not high. According to the technical points, the method comprises a step of head pose recognition on the intelligent glasses for vehicle maintenance, a step of sharing of other equipment data for vehicle maintenance by the intelligent glasses, a step of vehicle remote maintenance support by the intelligent glasses, a step of using of an intelligent glass touch board during the vehicle maintenance process, and a step of hand gesture recognition by the intelligent glasses during the vehicle maintenance process. The method of the invention has the advantages that applications of the intelligent glasses in the vehicle maintenance field can be realized.

The invention provides a laser radar and a working method thereof. The laser radar comprises a transmitting device, a beam splitting device, a galvanometer and a receiving device, wherein the transmitting device is used for transmitting a first laser beam to a to-be-detected object; the beam splitting device is used for splitting the first laser beam into a plurality of second laser beams, and thepropagation directions of the multiple second laser beams are different; the galvanometer comprises a first reflecting surface, the first reflecting surface is used for reflecting the second laser beams, the galvanometer is provided with a first rotary shaft and is rotated around the first rotary shaft, and an included angle between the first rotary shaft and a normal line of the first reflectingsurface is greater than zero; the receiving device is used for receiving echo beams reflected by the to-be-detected object. The laser radar has the advantage that the larger field angle can be obtained through smaller rotation angle of the galvanometer.

A system includes radiation source, scanning vehicle, control vehicle and remote control device for two vehicles. The rotary platform which can carry on relative motion is equipped on the scanning vehicle as parallelogram support built by fourlink mechanism of pin joint and level as well as vertical cantilevers connected with the support with detector are equipped on the rotary platform. The generator, work-chamber and rotary platform with the radiation source under its tail part are disposed at front and back parts of vehicle universal chassis separately. The sector formed by X ray from the radiation source is passed through low level position of container to be checked at back of tail part of the universal chassis.

A three dimensional radiation measurement scanning system includes a circular drive operable with horizontal and vertical drives for moving a radiation detector through first, second and third orthogonal axes in a three dimensional scanning of the detector in a water tank. Motor are coupled to the drives and activated by a controller for providing the movement of the radiation detector which providing radiation field sensing signals for locations of the detector throughout the tank. A reference detector is fixed for comparing its radiation field measurements with those of the scanned radiation detector. An offset mount carries the radiation detector allowing it to be extended beyond the circular ring gear during horizontal movement of the radiation detector and thus position the radiation detector at wall surfaces of the water tank.

A phased array for generating a directed radiation pattern includes a plurality of power divider ports, a first tunable element connected in series between each pair of adjacent power divider ports, an antenna connected to each of the power divider ports, and a second tunable element connected in parallel with each antenna The phased array can include equal phase differences between successive power divider ports, equal amplitude of the signal at each antenna, an equal amount of successive phase change in a signal at each antenna, a source connectible to at least one power divider port including an alternating power supply through a quarter-wave transformer, the first tunable element being either an inductor or a capacitor, the second tunable element being either an inductor or a capacitor, and / or each antenna separated by a successive antenna by a half wavelength.

The invention relates to a single-optical fiber scanning micro device as well as a production method and a control method thereof. The single-optical fiber scanning micro device is formed by wrapping an optical fiber with four pieces of piezoelectric ceramics, wherein a coating at the tail end of the optical fiber is removed, both ends of the four piezoelectric ceramics blocks are bonded around the optical fiber, a section of naked optical fiber is reserved, the four pieces of piezoelectric ceramics form a square cavity, the outer walls of the four pieces of piezoelectric ceramics are respectively provided with leads by tin soldering, the inner walls of the four pieces of piezoelectric ceramics on the cavity are conducted by conductive adhesives and are provided with one lead, the conducing wires of the two opposite pieces of ceramics in the horizontal direction are connected, and the leads of the two opposite pieces of ceramics in the vertical direction are connected. The single-optical fiber scanning micro device produced by the method has the advantages of short length, small size, good scanning repeatability, easy obtainment of raw materials, easy processing and low manufacturing cost, thereby having favorable application prospects on optical precise instruments as well as illumination devices, signal collection device and other devices in the field of clinical endoscopic operations.

The invention discloses a low-profile one-dimensional active transceiving phased-array antenna for satellite communication in motion. The antenna comprises dual-linear-polarization antenna units in inclined and staggered arrangement, flat waveguide dual-channel feed networks, flat waveguide dual-channel miniaturized duplexers, waveguide transition and miniaturized TR components and miniaturized printed board power division networks. The units of the phased-array antenna are dual-linear-polarization waveguide radiators in triangularly inclined and rear-staggered arrangement, so that the antenna is low. By the aid of a method of sharing the same aperture for horizontal polarization and vertical polarization, aperture utilization efficiency of the antenna is increased, a flat waveguide feedback mode is adopted for both horizontal polarization and vertical polarization, loss of the feed networks is reduced, and quite high antenna efficiency is achieved. After passing through the antenna units, the feed networks and the duplexers, dual-polarization signals are subjected to polarization adjustment via polarization adjustment modules in the TR components and are synthesized via pitching surface networks so as to achieve a transceiving function of radio-frequency signals.

The invention discloses a VCSEL (vertical cavity surface emitting laser)-based low-power-consumption gas detection method and device. The method comprises the following steps that: a microprocessor controls a sawtooth wave current driving circuit to drive a VCSEL to generate light with specified wavelength in the first step; the light emitted from the VCSEL reaches an optical fiber sensing probe and a reference air chamber through a light path; and an optical signal with concentration information enters a photoelectric conversion circuit and is converted into a corresponding analog voltage signal by the photoelectric conversion circuit, the analog voltage signal is converted into a digital voltage signal which can be identified by the microprocessor through an analog / digital (A / D) conversion circuit, a temperature measurement circuit transmits a measured environment temperature value to the microprocessor, and thus the microprocessor obtains the wavelength of the light emitted from the VCSEL in case of a given driving current and calculates a field gas concentration signal according to a Beer-Lambert law. The method has the advantage of implementing the gas concentration detection at low power consumption.

The invention discloses a security monitoring system which comprises at least one laser radar, a control module and at least one camera module. Each laser radar is provided with a preset target detection area; the laser radar is used for obtaining first point cloud data based on a laser radar coordinate system; the control module is connected with the at least one laser radar, and is used for converting the first point cloud data into second point cloud data under a space coordinate system and carrying out obstacle identification according to the second point cloud data, and determining the coordinates of the obstacle in the space coordinate system according to the third point cloud data of the obstacle in the space coordinate system when the obstacle is identified; the control module is further connected with at least one camera module and used for controlling the camera modules to acquire images of the obstacles according to the coordinates of the obstacles in the space coordinate system. According to the security and protection monitoring system provided by the invention, accurate illegal intrusion monitoring on the perimeter of a large-range area is realized.

The embodiment of the invention discloses a laser radar and a laser radar control method. The laser radar comprises two or more than two detection units, each detection unit comprises: one emitter configured to emit an emergent laser; one emitting terminal collimation unit configured to perform collimation of the emergent laser emitted by the emitter; one polarizing beam-splitting unit configuredto allow the emergent laser after collimation to enter from a first light port of the polarizing beam-splitting unit to allow the P polarized light in the emergent laser after collimation to be emergent from the emitting terminal collimation unit; a quarter-wave plate configured to allow the P polarized light emergent from the second light port of the emitting terminal collimation unit to become circular polarized light; and a galvanometric scanner configured to change the emergent direction of the circular polarized light to become the emergent laser. The laser radar and the laser radar control method can enhance the scanning range of the laser radar and improve the resolution and precision of the laser radar.

A rotation type optical tomography scanner is provided, including an illuminating unit disposed on a surface of an object-to-be-detected for emitting incident light to tissues under the surface of the object-to-be-detected; a detecting unit disposed on the object-to-be-detected and rotating around the illuminating unit to receive diffuse light diffused from the tissues under the surface of the object-to-be-detected and generate tissue sensing information; and a positioning unit for generating position information of the rotation type optical tomography scanner. The rotation type optical tomography scanner transmits the sensing information and the position information to a remodel module to rebuild the tissue images under the surface of the object-to-be-detected, thereby expanding the scanning range of the object-to-be-detected.

The invention discloses a 3D visual inspection system of gluing quality. The system comprises a 3D contour scanner, an image processing unit, an encoder, and a computer. The 3D contour scanner consists of an area array CCD and a straight linear laser generator. The image processing unit transmits an adhesive tape 3D image signal shot by the 3D contour scanner to the computer. The encoder fixed with the 3D contour scanner together generates a pulse and triggers the 3D contour scanner to collect an image. The computer with image processing software arranged inside the computer is able to locatean adhesive tape track, calculate the width and area of the adhesive tape, and compare the width and area of the adhesive tape with respective preset threshold values to determine whether the gluing is qualified. In addition, the invention also discloses a 3D visual inspection method of gluing quality. Compared with the prior art, the 3D visual inspection system and method have the following beneficial effects: the continuity and location of glue can be detected accurately and stably; the detection efficiency is improved; and the detection reliability is enhanced.

The invention discloses an array typed laser scanner comprising a base, a control driving system and a plurality of auxiliary mirrors arranged in array. The auxiliary mirrors are arranged on the same direction and are fixed on the base; gaps are reserved between two adjacent auxiliary mirrors, so that the auxiliary mirrors do not touch each other when inclining to each other; the control driving system is connected with piezoelectric drivers in Ns of the auxiliary mirrors to realize open loop control of deflecting angles of reflectors. A multiple light ray scanning method is utilized to connect a plurality of small scanning fields into a big scanning field, and is capable of ensuring scanning angles and scanning frequency at the same time, each auxiliary is capable of scanning independently and multiple task detection is realized. With the array typed laser scanner, space utilization rate is greatly increased, and scanning angles are improved; the array typed laser scanner is characterized in that the array typed laser scanner is fast in driving speed, high in control accuracy, no mechanical abrasion, compact in structure, high in space utilization rate and good in stability, small in volume, light in weight, high in rigidity and is especially suitable for application of satellite and unmanned machine imaging laser radar.

The invention relates to phased-array antenna equipment, a wide-angle impedance matching device of the phased-array antenna equipment and a phased-array antenna system. The phased-array antenna equipment comprises an antenna device array and the wide-angle impedance matching device arranged above the antenna device array. The wide-angle impedance matching device comprises a first substrate, a plurality of horizontal conductive geometrical structures and a plurality of vertical conductive geometrical structures. The horizontal conductive geometrical structures are horizontally arranged on one surface of the first substrate, the vertical conductive geometrical structures are arranged above or below the horizontal conductive geometrical structures and are arrayed to be perpendicular to the first substrate roughly. The phased-array antenna equipment and the wide-angle impedance matching device of the phased-array antenna equipment have the following advantages that the influence of scanning blind points on a required frequency band is reduced, wide-band and wide-angle phased array scanning impedance matching is achieved, hence, the wide-angle scanning gain is improved, the scanning coverage is expanded, and the antenna scanning performance is improved.

The invention discloses a phased array radar monopulse high-resolution angle measurement system and method. The system includes at least one transmitting antenna for transmitting monopulse signals, atleast two receiving antennas with the same configuration for receiving the monopulse echo signals reflected by the target to form a beam scanning angle, a signal processor for processing the monopulse echo signals received by the receiving antennas, calculating information of the target and the echo power sum value of the receiving antennas under the action of the target, and also for weighting of received / transmitted monopulse signals, correction of amplitude and phase and storage or loading of working parameters, and an upper computer for receiving the information transmitted by the signalprocessor through a network interface. The system has the advantages that the system adopts a mode that the transmitting antenna and the receiving antenna are separated, formation of low sidelobe transmitting and receiving beams is easy to realize, the scanning range is increased, the problem that the traditional monopulse angle measurement cannot be detected when the difference between two targetangles is very small is solved by the method, and the super-resolution of targets with adjacent angles is realized.

The invention provides a phased array antenna with a reconstructible directional diagram, belonging to the communication technology field, and relating to an antenna structure. The phased array antenna at least comprises a following line style phased array: the line style phased array comprises a medium substrate, a metal ground plate and a radiation patch, the radiation patch is formed by L excitation patches and L+3 parasitic patches, L is larger than or equal to 2, a parasitic patch is arranged between each two adjacent excitation patches, outboards of two excitation patches at left and right sides also are provided with two parasitic patches, a central position of each parasitic patch is opened with a vertical seam and four transverse seams which are crossed with the vertical seam, and the vertical seam is uniformly provided with three switches which are connected with parasitic patches at two sides of the vertical seam. According to the invention, a patch Yagi antenna unit with a reconstructible directional diagram is employed to form a phased array, through compressing the quantity of the parasitic patches of a reconstructible unit, the parasitic patches are combined with different excitation patches in different states, a dimension of the whole array is reduced to a large extent, an array sidelobe level is reduced, and a wave beam scanning scope is enlarged.

The invention discloses a measuring apparatus of a micro electronic mechanical system (MEMS) two-dimension (2d) scanning mirror scanning angle. After being scanned by a micro mechanical 2 d scanning mirror, a laser beam irradiates on a semi-transparent and semi-reflection mirror. The semi-transparent and semi-reflection mirror beam irradiates on an object and rest light is reflected on a PSD detector. After detecting a laser, the PSD detector outputs two paths of analog voltage signals. After A / D conversion is performed to the two paths of the voltage signals output by the PSD through an A / D converting circuit, digital signals are output. In a structure of the invention, a circuit is simple. A measuring scope is large. Instantaneity is strong and precision is high.

The invention provides a lidar device and a mobile robot. The lidar device comprises a lidar sensor, a rotating platform and a base. The lidar sensor is arranged above the rotating platform. The baseis used for bearing the rotating platform. An adjustment device is arranged between the lidar sensor and the rotating platform. The adjustment device is configured to drive the lidar sensor to rotatearound a first axial direction, wherein the first axial direction is parallel to the rotating platform. The adjustment device is arranged between the lidar sensor and the rotating platform so that thelidar sensor can be adjusted in the vertical direction to realize scanning in three-dimensional space, the scanning range of the lidar device is wider, other lidar devices are not required, the manufacturing cost is obviously reduced in comparison with the multi-line lidar device, and the technical problems of small scanning range of the single-line lidar device and high manufacturing cost of themulti-line lidar device in the prior art can be overcome.

A shape measuring system includes a laser emitter that emits a laser beam, a scanner that scans the laser beam emitted by the laser emitter over a region in which an object is placed, a camera that detects reflected light of the laser beam, a recognizer that performs three-dimensional measurement of the object on the basis of the detection result of the camera, and a controller that performs control so as to change a scanning range of the scanner in accordance with the region in which the object is placed, the region being detected by the camera.

The invention discloses a multi-beam medium column lens antenna, comprising a dielectric column lens, a metal plate waveguide, an antenna part and a feed source part, wherein the metal plate waveguide is provided with an upper metal plate and a lower metal plate; the antenna part comprises a dielectric substrate in the middle part, a patch antenna array at one side of the dielectric substrate and a coupled gap array at the other side of the dielectric substrate; the patch antenna array is formed by eight rectangle patches in parallel; the feed source part comprises a dielectric substrate in the middle part, a coupled gap array at a side surface inside the dielectric substrate and an L-shaped micro-strip feeder line array at a side surface outside the dielectric substrate; the coupled gap array of the feed source part and the coupled gap array of the antenna part are of the same shape and fitted mutually; the L-shaped micro-strip feeder line array is formed by eight paths of L-shaped micro-strip feeder lines; and one path of the L-shaped micro-strip feeder lines in the L-shaped micro-strip feeder line array corresponds to a rectangle slot of each coupled gap array respectively. The antenna has the characteristics that the structure is simple, the processing is easy, the weight is light, the scanning range is wide, and the cost is low and the like.

The invention provides a quasi-distribution optical fiber white-light strain sensing and demodulation device based on a nonequilibrium Michelson interferometer. The device consists of a photoelectric device, a nonequilibrium Michelson interferometer, a single mode connection optical fiber and a serial optical fiber sensor array, wherein the photoelectric device consists of a broadband light source, a three-port circulator and a photoelectric detector; the nonequilibrium Michelson interferometer consists of a plated optical fiber reflection end, a scanning reflection mirror, a focusing lens and a 3dB optical fiber 2x2 coupler; and the serial optical fiber sensor array is formed by connecting optical fiber sensors in series. The device has the advantages of simple structure, convenience of use, low production cost, distributed measurement expansion, wide dynamic measurement range, high measurement precision, high anti-interference performance and the like, can sense and detect physical values such as distributed deformation, strain, temperature, pressure and the like, and can be used for monitoring intelligent structures in large sizes, and sensing a plurality of tasks, a plurality of elements, local strain and large-scale deformation.

The invention discloses large-FOV (field of view) short-range laser radar. The laser radar comprises a laser transmitting module, a laser receiving module and a rotating structure, wherein the laser transmitting module comprises a laser used for transmitting outgoing laser beams, a control circuit used for controlling the laser to work as well as a one-dimensional galvanometer used for changing light path direction of the outgoing laser beams in the vertical direction; the laser receiving module is used for receiving reflection laser to execute target detection, and the reflection laser is aroused by the outgoing laser beams reflected by the one-dimensional galvanometer under action of an external obstacle; the rotating structure is used for driving the laser transmitting module and the laser receiving module to rotate horizontally. The invention further discloses a vehicle. The large-FOV short-range laser radar is arranged at the front end of the vehicle. Short-range detection blind zone can be reduced, the structure is simple, production, installation and adjustment are convenient, and production cost is reduced greatly.

The invention discloses an imaging system of an atomic force microscope (AFM) on the basis of a quartz tuning fork probe. An AFM controller in the system is respectively connected with a graphic display, a piezoelectric ceramic tube scanner, a drive circuit of a stepping motor, a feedback signal detection circuit and a scanning control signal processing circuit through wire cables so as to achieve transmission of electrical signals, a probe limiting seat is installed on a sample table, a round mounting table is mounted above the probe limiting seat, and the piezoelectric ceramic tube scanner, a displacement adjusting component and a circuit mounting box which is supported by four supporting columns are installed on the round mounting table. By means of the imaging system of the AFM on the basis of the quartz tuning fork probe, a student can know basic working principles of the AFM and operating steps of the imaging system, and the imaging system can be used for observing a microstructure of a sample. During an experiment, the student can measure force sensor--quartz tuning fork probe damping coefficient of the imaging system and observe bistable state phenomena to further understand AFM force action mechanism and parameter setting.

A small optical resolution photoacoustic microscope based on a micro-electromechanical scanning galvanometer belongs to the technical fields of automatic control and imaging. The small optical resolution photoacoustic microscope includes a light source assembly, a single-mode fiber coupling assembly, a light beam scanning assembly, a reflective support 4-1, a signal acquisition assembly and a computer, the computer controls pulsed laser emitted from the light source assembly to be collimated by the single-mode fiber coupling assembly and then enter the light beam scanning assembly, the light beam scanning assembly includes the micro-electromechanical scanning galvanometer 3-4 and a function generator 3-5, the computer controls the micro-electromechanical scanning galvanometer 3-4 to rotatethrough the function generator 3-5, the pulsed laser entering the light beam scanning assembly is reflected by the micro-electromechanical scanning galvanometer 3-4, and reacts with a target object through the reflective support 4-1 in order to generate a photoacoustic signal, and the photoacoustic signal is reflected by a light-transmitting and acoustic-reflecting sheet, is acquired by the signal acquisition assembly, is transmitted to the computer, and is stored and processed. The small optical resolution photoacoustic microscope has the advantages of small size, light weight, wide scanningrange and high scanning precision.

The invention relates to a new high-resolution adjustable vertical three-dimensional scanner, which includes a bracket, a pan platform is installed on the top of the bracket, a rotating platform is installed on the upper part of the platform, a handle is installed on the rotating platform, and the handle is connected with a lifting screw , the top of the turntable is connected with a support seat, and the upper part of the support seat is installed with a camera A, a scanning device and a camera B, the scanning device is connected with a processor, the processor is connected with a memory and a display screen, and the processor is connected with a power supply and A / D The conversion module, the A / D conversion module is connected with the camera A and the camera B, the processor is connected with the computer, the computer is connected with the rotary controller, and the rotary controller is connected with the rotary table, which has the advantages of reasonable design, simple and compact structure, simple operation, It has the advantages of small size, light weight, large scanning range, fast scanning speed, high precision, safety and reliability, stable operation, long service life, high economic benefit and wide application range.

The invention discloses an ultra-precise straightness measuring method based on single-measuring-head error separation. The method comprises the implementing steps that a measured workpiece is placed on a machine tool, and a scanning measuring head is mounted on a movement mechanism of the machine tool through a shearing platform provided with a micro-displacement structure; starting from the starting position of a selected moving distance, the movement mechanism is controlled to drive the scanning measuring head to conduct amplitude -limited movement, and every time the scanning measuring head is moved to a detection position, the scanning measuring head is driven by the shearing platform to conduct micro-displacement to collect distance detection data of at least two positions in the micro-displacement process until data acquisition of all detection positions of the measured workpiece at the selected moving distance is completed; the distance detection data collected at all the detection positions are subjected to error separation through a preset error separation algorithm to obtain a straightness measuring result. The method has the advantages that measurement accuracy is high, the scanning area is large, the measuring range is large, measurement is convenient and fast, influences of environmental low-frequency vibration can be suppressed, and influences of zero setting errors, spacing errors, property difference and thermal drift of the measuring head are eliminated.