123results about How to "Good scan effect" patented technology

A MEMS apparatus for scanning an optical beam comprises a mirror operative to perform a rotational motion to a maximum rotation angle around a mirror rotation axis, and a bouncing mechanism operative to provide a bouncing event and to reverse the rotational motion. The bouncing event provides the mirror with a piecewise linear response to actuation by intrinsically nonlinear electrostatic forces. The bouncing mechanism includes an element chosen to impart an overall nonlinear stiffness to the system and is selected from the group of elements consisting of a bouncer and a pre-curved nonlinear stiffness element.

The invention relates to a DLP three-dimensional printer and a three-dimensional printing method based on a digital light processing technology and a three-dimensional scan technology, wherein the DLP three-dimensional printer comprises a frame, a control unit, a scanning and projecting unit, a scanning molding carrying unit as well as a molding groove mounted on the frame, wherein the molding groove is used for containing a light-cured resin solution; the scanning and projecting unit comprises a scanning light source, a molding light source, a digital micro-lens wafer and a scanning reflective light receiver; the scanning molding carrying unit is used for carrying a scanned object and molding a three-dimensional object in the molding groove; the digital micro-lens wafer is controlled by the control unit to process light generated by the scanning light source and the molding light source so as to correspondingly form scanning light for three-dimensional scanning on the object or molding light for curing the light-cured resin solution in the molding groove. According to the DLP three-dimensional printer, the processing capability of the digital micro-lens wafer on light can be fully utilized, so that the shape and the size of facula of the scanning light beam are no longer limited by the scanning light source.

The invention discloses an undisturbed loess preferential flow dynamic observation device for CT scanning and a method of use. The loess is stored in a visual container of the device. A continuous fluid adding device continuously supplies liquid to a percolation chamber. During the gradual seepage of the loess, CT can clearly scan related parameters such as pore changes in the loess and seepage paths of the liquid. The device is simple in structure, convenient to mount and dismount, and high in automation degree. The method of using the device adopts advanced X-ray CT non-destructive testing technology to perform dynamic CT scanning on undisturbed loess samples in an undisturbed soil visual seepage device under continuous humidification conditions, and uses an AVIZO three-dimensional visual reconstruction platform to perform image processing, three-dimensional visual reconstruction, pore fracture characteristic analysis and preferential flow seepage path extraction on CT scanning results under dry wet conditions to obtain preferential seepage channels of the pore fracture and dynamic development rules of the preferential flow.

The invention discloses a rapid three-dimensional scanning method and system applicable to complex object surfaces. The method includes the steps: setting exposure time, gains or apertures of a plurality of cameras according to color information of the detected object surfaces; controlling a projector to project horizontal and vertical stripes to detected objects; simultaneously acquiring projection images on the detected object surfaces by the cameras to generate a phase diagram; searching corresponding points in the phase diagram based on the projector to perform three-dimensional reconstruction. According to the rapid three-dimensional scanning method and system applicable to the complex object surfaces, various complex object surfaces can be rapidly scanned without developing agents, three-dimensional online detection requirements are met, one time of projection and reconstruction can be realized without adding hardware equipment, scanning effects are better, and speed and precision are higher.

The invention discloses a multifunctional industrial scanner. The multifunctional industrial scanner comprises a carrier platform for accommodating an object to be scanned, a vertical column arranged on the carrier platform and a camera assembly; the industrial scanner further comprises a height regulating system; the height regulating system comprises a guide rail and a lifting motor mounted on the guide rail; the guide rail is mounted on the vertical column; the camera assembly is mounted on the guide rail, and is driven by the lifting motor to move up and down along the guide rail; the multifunctional industrial scanner further comprises light source compensation systems and a light source and power source control system, and adopts the rolling-type carrier platform. According to the multifunctional industrial scanner, the height regulating system is used for detecting height and realizing automatic scanning height regulation; the light source compensation systems are used for light source compensation; through the light source and power source control system, the light source brightness regulation and work signal receiving can be realized, so that clear and bright light during shooting is ensured, and the optimal scanning effect is realized.

The invention relates to a laser scanning method, a readable storage medium and a laser scanning control device. The laser scanning method comprises the steps that a work area to be scanned is acquired, and a plurality of boundary lines are applied to partition the work area into a plurality of partition areas; a control scanner is used to sequentially scans line by line for the multiple partitionareas, wherein, a plurality of scanning lines scanning the same one of the partition areas are parallel to each other; and included angles between the scanning lines of each of the partition areas and the boundary lines of the partition areas are not equal to 90 degree, and the included angles between the scanning lines of each two adjacent partition areas are not equal to 0 degree or 180 degree.According to the laser scanning method, the readable storage medium and the laser scanning control device, the partition scanning can be realized to enable the stress generated by the laser scanningto be more dispersed, so that the problems of the buckling deformation or the cracking of the scanned workpiece are not prone to be caused, and the scanning effect is good.

The invention discloses a two-degree-of-freedom laser scanning method and a hollow numerical control holder. The scanning method includes the following steps of 1 scanning target points setting which includes selecting N ground points in a preset scanning area as target points, 2 target points three-dimensional coordinates determining which includes determining three-dimensional coordinates of the selected N target points respectively and 3 automatic scanning which includes that the hollow numerical control holder comprises a two-degree-of-freedom holder body which comprises a cabinet body and a hollow horizontal rotating platform installed on the cabinet body, a laser is installed in the cabinet body, and a light reflection mirror used for reflecting laser light beams transmitted by the laser and driven by a pitching adjusting mechanism to rotate vertically in the vertical face is installed on the horizontal rotating platform. The method and the holder are reasonable in design, convenient to operate and achieve, good in use effect and capable of solving the problem that complex and accurate coordinate demarcation is required on site in use of the existing two-degree-of-freedom holder, a laser facula position calculation result is low in accuracy and the like.

The embodiment of the invention discloses a WiFi scanning method, a WiFi scanning device and an electronic device, and relates to the technical field of terminals, wherein the method comprises the steps of: obtaining wireless environment parameters in multiple channels; determining the scanning time according to the wireless environment parameters in each channel; and scanning the channel according to the scanning time. Thereby, channel scanning relatively accords with a current practical use environment; and a good scanning effect is obtained.

The invention discloses a three-dimensional 3D scanner. The scanner comprises an objective table used for placing an object, a motor and a first scanning unit. The scanner of the invention can scan materials with different heights and different widths. Three-dimensional scanning can be performed on the object on the objective table. A scanning scope is large, scanning data is comprehensive and a scanning effect is good. Unnecessary scanning operation is reduced, resources are saved and the efficiency is increased. Scanning can be performed from an upper portion and a lower portion of the object, and scanning quality is effectively guaranteed.

The invention discloses an ultra-wideband strong mutual coupling phased array antenna based on a grounded metal strip, belonging to the field of radar technology and wireless communication technology.The antenna comprises a lower metal floor, an upper dielectric substrate having a matching function, and a middle vertical dielectric substrate vertically arranged between the metal floor and the upper dielectric substrate. A metal patch of a microstrip gradient balun and a dipole is prin on that vertical type dielectric substrate; The inner core of the coaxial joint is connected with the microstrip graded balun through the metal floor, and the dipole metal patch is fed by the microstrip graded balun. Between one arm of that dipole metal patch and the metal floor, a ground metal strip is alsoarranged. The ground metal strip ensures the wide-angle scanning performance of the antenna by reducing the mutual coupling between adjacent antenna elements, and makes the E-plane scanning range ofthe strongly mutually coupled phased array antenna reach+ / - 60 degrees within the bandwidth of 6 times the frequency.

The invention refers to an antenna system (1) for an airborne radar system. The antenna system (1) comprises a dorsal unit (8) having two opposing long sides (9) extending in a height direction (Z) and a longitudinal direction (X), and two opposing short sides (10) extending in a lateral direction (Y) and the height direction (Z), and an upper side (11) opposing a bottom side (12) each extending in the longitudinal direction (X) and the lateral direction (Y). The antenna system (1) comprises antenna devices (14) being interspaced and mounted in connection to one of the short sides or both the short sides (10) and extending in the height direction (Z). Each of the antenna devices (8) comprises a waveguide board (21).

The invention relates to a method for filtering the conical defects of a chip by regulating the parameters of a defect inspection device, and the method comprises the following steps: step A, three values of the system parameters Lo of a scanning device machine are adjusted to be between the system default values and 0 under the situation of the given polarization combination; step B, different regions are selected under the full chip observation mode of the scanning device machine, the region in the mapping function is selected as a logic region, then the histogram function is selected to obtain a distribution diagram of scattering dynamic received intensities of three receivers in the region; step C, three values of the transverse coordinates of the corresponding points which start to increase at the left sides of three peak forms on the distribution diagram are determined on the distribution diagram of the scattering dynamic received intensities of the three receivers in the region, that is the three values of the Lo parameters; step D, the three Lo parameters obtained in the step C are used as the Lo parameter values for carrying out the scanning. The method can not only ensure the conical defects of the open region to be successfully filtered, but also ensure the killer defects of the logic region not to be missed by the inspection.

A phased array antenna comprising a dielectric superstrate material, a ground plane material, a plurality of dipole structures located between the superstrate and ground plane materials, and a plurality of balun and matching networks in electrical communication with the plurality of dipole structures, wherein the phased array antenna is adapted to achieve a bandwidth of at least about 7:1.

The invention discloses wireless bar code scanning equipment with an intelligent power saving function, which comprises an equipment use interval statistics module, a use frequency analysis module and a sleep mode automatic setting module. According to the wireless bar code scanning equipment, a function of carrying out statistics on a time interval of two adjacent times of scanning a bar code by a user is added into equipment system, a use frequency case of a client user is obtained by statistic analysis, and according to different use frequencies, different sleep modes are automatically set, and thus, when the client uses the scanning equipment under a high frequency, an optimal scanning effect can be achieved, and when a use frequency of the client is very low, an optimal power saving effect can be achieved.

The invention discloses a flying spot formation device which comprises a radiation source and a shielding body, wherein at least two pairs of spiral grooves are formed in a side wall of the shielding body; each spiral groove has preset slope; a first incident slot is adjacent to a second incident slot; the head end of the first incident slot is higher than the head end of the second incident slot; the tail end of the first incident slot is higher than the tail end of the second incident slot; a preset distance is formed between the tail end of the first incident slot and the head end of the second incident slot; the tail end of the first incident slot is not higher than the head end of the second incident slot; a first axis section of the shielding body is intersected with the tail end of the first incident slot; a second axis section of the shielding body is intersected with the head end of the second incident slot; and an included angle between the first axis section and the second axis section is 0 degree. The invention also discloses a design method for the flying spot formation device. By utilizing the invention, the tensile property of the shielding body can be improved.

The invention provides a vehicle-mounted X-ray whole-boy perspective safety check system. The system comprises a vehicle and an X-ray scan imaging system mounted in the vehicle. The X-ray scan imaging system includes an X-ray generator, a collimation device, an X-ray detector, a controller and a conveyor which rotates around the X-ray detector and allows a human body to be checked in seat. The conveyer is provided with a chair, armrests and pedals, by which one to be checked has to sit with his arms and legs opened while being scanned, so that the optimum scanning effect is obtained, the height of the X-ray detector is greatly lowered, and the problem that the conventional body safety check system cannot completely meet the requirements of fluid safety check is solved. The system provided by the invention is applicable in common passenger carriages, and can reduce the cost, having a wide application range. Besides, the system is particularly suitable to be used for providing efficient general check for ordinary persons in unfixed fields, and is easy to implement.

The present invention relates to an x-ray detector system for a computed tomography scanner. The x-ray detector system includes at least one detector row which includes a plurality of detector modules each having a plurality of detector elements. Along the at least one detector row, a first portion of the detector elements is arranged in a grid at a first grid spacing a1 in relation to its respective neighboring detector elements, and a second portion of the detector elements is arranged in a grid at a second grid spacing a2 in relation to its respective neighboring detector elements.

According to the embodiment, the invention relates to a computed tomography device, which comprises a fixed frame (1), a rotary frame (2), a light source generating device (3), a signal detection device (4) as well as a scanned object supporting device (5) and a light source collimation device (8), wherein the rotary frame (2) can rotate around some fixed point in an X-Y plane; the light source generating device (3) is arranged on the rotary frame (2), and scanning light of a cone beam can be outputted and a focus can do continuous movements in an Z direction; the signal detection device (4) is arranged on the rotary frame (2) and is fixed relative to the position of the light source generating device (3); the signal detection device (4) is of an area-array structure adaptive to collectionof the cone beam, and the signal detection device comprises a plurality of light sensing elements; and the light source collimation device (8) can do translation in the Z direction along with the change in a focus position of the light source generating device (3).

The invention provides an ultra-wideband dual-polarization phased-array antenna based on a strong coupling dipole. The antenna comprises a horizontally disposed radiation unit, a dielectric matching layer located above the radiation unit, a vertically disposed feed structure located below the radiation unit, and a horizontally disposed metal grounding plate located below the radiation unit. The radiation unit comprises three layers of horizontal dielectric substrates which are horizontally arranged, dipole units are respectively printed on the top surface and the bottom surface of the middle dielectric substrate, the two dipole units are vertically arranged in different planes, and reinforced coupling patches are respectively printed on the top surface of the upper dielectric substrate and the bottom surface of the lower dielectric substrate. Each reinforcing coupling patch wraps and clamps the vertical crossing part of the dipole unit, and the dielectric substrate, the dipole unit and the reinforcing coupling patch are connected through a plurality of first metalized via holes. The ultra-wideband dual-polarization phased-array antenna based on the strong coupling dipole is low in profile, the isolation degree between ports can be improved, and cross polarization is reduced.

The invention relates to a triangular rasterized scanning structure based on TLM (Transaction Level Models), including an initialization unit which is connected with a data acquisition unit through atransaction level port and is used for receiving triangular data information and obtaining the X-axis starting coordinates and the Y-axis detection range according to the triangular data information,a Y-axis stepping unit which is connected with the initialization unit through a transaction level port and is used for carrying out enabling identification on the X axis and controlling the steppingof detection elements along a first direction according to the Y-axis detection range, and a number of X-axis scanning units which are used for controlling the scanning of the detection elements alongthe X axis according to the enabling identification of the X axis and the X-axis starting coordinates. The triangular rasterized scanning structure integrates the initialization unit, the Y-axis stepping unit and the X-axis scanning units, and the initialization unit, the Y-axis stepping unit and the X-axis scanning units are connected in turn through the transaction level ports, so that X-axis scanning and the Y-axis stepping can be executed in parallel, the complexity of triangular rasterization is reduced, and the scanning performance and speed of the triangular rasterized scanning structure are improved.

The invention belongs to the technical field of computer hardware equipment, and particularly provides a scanner with a cleaning device. The scanner comprises a scanner body (1), an upper cover plate (2), and a scanning panel (3). A cleaning device (4) is arranged on the upper surface of the scanner body (1), and the cleaning device (4) comprises a cleaning brush (42) attached to a screen of the scanning panel (3). Slide bar slots (5) are arranged on the left and the right sides of the scanning panel (3), and slide bars (6) are arranged in the slide bar slots (5). The cleaning device (4) is provided with hook rings (41) at the two ends, and the hook rings (41) are hooked to the slide bars (6). The scanner is provided with the cleaning device, so that a user can clean the scanning panel of the scanner conveniently at any time without using a piece of wiping cloth. Thus, wear of the scanning panel caused by external factors is avoided, and the scanning effect is improved.

The invention provides a three-dimensional scanning device. The motor shaft of a dual-shaft wheel hub motor is vertically arranged; the bottom end of the dual-shaft wheel hub motor is installed at thecenter of a fixing base; the top end of the dual-shaft wheel hub motor is fixed at the bottom center of a scanning platform; one end of a rotating platform is connected with the outer edge of the wheel hub of the dual-shaft wheel hub motor; the other end of the rotating platform extends outwards along the radial direction of the motor shaft so as to be connected with the bottom end of a lifting mechanism; a servo is mounted on the lifting mechanism through a mounting bracket, the output shaft of the servo is connected with a scanner, and therefore, a scanner assembly can be formed; the pitchangle of the scanner can be adjusted by means of the driving of the servo; the scanner assembly as a whole can be driven to move up or down by the motor of the lifting mechanism, and can be limited during the upward and downward movement through an upper stroke switch and a lower stroke switch mounted on the lifting mechanism; and the rotating platform can rotate with the wheel hub with as the motor shaft adopted as a rotating shaft, and can be limited during rotation through a rotation stroke switch on the fixing base. The three-dimensional scanning device can complete three-dimensional scanning operation on the basis that an object to be scanned is motionless. The three-dimensional scanning device has the advantages of low processing cost and operational easiness.

The invention discloses a laser scanning sampling device using a paraboloid mirror for correcting scanning angles. The laser scanning sampling device using the paraboloid mirror for correcting the scanning angles comprises a laser group, a beam combiner group, a semi-transparent and semi-reflective mirror, an optical deflector, a paraboloid mirror, a dichroic mirror group and a detector group, wherein lasers with different wavelengths are emitted by the laser group, combined by the beam combiner group, and emergent to the semi-transparent and semi-reflective mirror, the lasers are divided into transmission lasers and reflection lasers by the semi-transparent and semi-reflective mirror, wherein the transmission lasers are deflected by the optical deflector to form scanning lasers with a certain angle, after the transmission lasers are reflected by the paraboloid mirror, the formed parallel scanning lasers are vertically incident to a scanning face, parts of laser signals scattered by the scanning face return to the optical deflector along an original light path and then are reflected to the semi-transparent and semi-reflective mirror through the optical deflector, and laser signals with the different wavelengths are sent into the detector group through the dichroic mirror group. The problem that under the non-vertically incident condition, laser information decays along with the increase of an incident angle of the scanning lasers is solved.

The invention discloses a three-dimensional ultrasound biomicroscope for cylinder scanning. In the three-dimensional ultrasound biomicroscope, a motor 1, a coupling sheet 1, a photoelectric encoder 1 and a motor fixing sleeve are connected sequentially; one end of a motor 2 passes through an aperture on the base of the motor fixing sleeve and is fixedly connected with a coupling sheet 2; a supporting frame is fixed on the base of the motor fixing sleeve; a photoelectric encoder 2 is arranged between the base of the motor fixing sleeve and the coupling sheet 2; both ends of a transmission bar are connected with an off-centre position of the coupling sheet 2 and a transmission frame respectively; a guide rail is in a linear type and passes through a slot of the transmission frame, and both ends of the guide rail are fixed on the supporting frame; a sliding block is arranged below the guide rail and is fixed on the transmission frame; one end of a probe is connected with the transmission frame, and the other end of the probe is provided with a sensor; the sensor is connected with a control line board; the photoelectric encoder 1 and the photoelectric encoder 2 are connected with the control line board; and the control line board is connected with a programming controller. The three-dimensional ultrasound biomicroscope has a simple structure, a controllable scanning range and high scanning efficiency and is convenient to operate and simple in data processing.

The invention relates to a bidirectional driving micro-mirror chip and a manufacturing method thereof. The problems that a two-layer comb tooth structure is adopted in the prior art, only one-way driving can be achieved, the stress of a micro-mirror is asymmetric, and the micro-mirror cannot completely rotate around a center shaft are solved. A brand-new design structure is applied, an upper-layercomb tooth structure, a middle-layer comb tooth structure and a lower-layer comb tooth structure are provided, two-way driving force is provided for the micro-mirror, and a better micro-mirror scanning effect is achieved.