93results about How to "Large capture range" patented technology

An alignment system uses a self-referencing interferometer that produces two overlapping and relatively rotated images of an alignment markers. Detectors detect intensities in a pupil plane where Fourier transforms of the images are caused to interfere. The positional information is derived from the phase difference between diffraction orders of the two images which manifests as intensity variations in the interfered orders. Asymmetry can also be measured by measuring intensities at two positions either side of a diffraction order.

The invention discloses an alignment system applied in a lithography device, which uses three periods phase grating with crude precision combination in a substrate marker or a substrate station reference marker, uses a first order diffraction light of the three periods as an alignment signal, simultaneously realizes a big capture range and gets high alignment precision, gets labeled deformation information and other useful information, and through the optimum design of the match and / or the layout of the three periods, the influence on an alignment position by asymmetrical deformation of the marker is effectively reduced.

A method and apparatus for convolutional neural network (CNN) regression based 2D / 3D registration of medical images is disclosed. A parameter space zone is determined based on transformation parameters corresponding to a digitally reconstructed radiograph (DRR) generated from the 3D medical image. Local image residual (LIR) features are calculated from local patches of the DRR and the X-ray image based on a set of 3D points in the 3D medical image extracted for the determined parameter space zone. Updated transformation parameters are calculated based on the LIR features using a hierarchical series of regressors trained for the determined parameter space zone. The hierarchical series of regressors includes a plurality of regressors each of which calculates updates for a respective subset of the transformation parameters.

Disclosed is a self-adaption claw mechanism of a spatial on-orbit service robot. The self-adaption claw mechanism is composed of a self-adaption claw, a motor, a transmission mechanism of the motor and a base part. The self-adaption claw is used for achieving the function of on-orbit target object capturing. The motor and the transmission mechanism of the motor are used for transmitting torque, and the motor provides active torque. The base part is used for maintaining the relative positions of all the parts of a system. The self-adaption claw mechanism has adaptivity, so that grabbing modes can be selected in a self-adaption mode according to the shapes of target objects, and the universality is strong. The claw mechanism has auto-stability, and after the claw mechanism makes contact with the target objects, the post grabbing process is prone to self-stabilization due to the fact that a torsion spring which has the effect of adjusting the torque in a passive mode is adopted. The active and passive composite driving design with the single motor and the torsion spring combined is adopted in the mechanism, so that control strategies are simplified, and impulsive loads can be effectively buffered. The self-adaption claw mechanism is applied to the on-orbit robot, and greatly improves the task executing efficiency.

A micromechanical rotation rate sensor has a seismic mass and driving devices which cause a driving vibration of the seismic mass in a first direction x. The rotation rate sensor has measuring devices which measure a deflection of the seismic mass in a second direction y, and generate a deflection signal. The deflection includes a measurement deflection caused by a Coriolis force and an interference deflection, the interference deflection being phase-shifted with respect to the measurement deflection by 90°. Compensation devices are provided at the seismic mass to reduce the interference deflection. Regulation devices are provided, to which the deflection signal is supplied as an input variable, which demodulate an interference deflection signal from the deflection signal, and which generate a compensation signal from the interference deflection signal, which is supplied to the compensation devices.

The system comprises: a light source module, a lighting module, an imaging module, a detection module and a signal processing and positioning module. The imaging module is used for collecting the reflected light and diffracted light of the alignment mark to form a first optical path and a second imaging optical path; after said alignment mark is imaged through the first and second imaging optical path, it is modulated by a first reference grating and second reference grating; the detection module detects the strength of the transmitting light of the alignment mark after modulated by the first reference grating and the strength of the transmitting light of the alignment mark after modulated by the second reference grating to get a first light signal and a second light signal; the signal processing and positioning module uses the amplitude information of the first light signal and the phase information of the second light signal to confirm the location information of the alignment mark.

The invention discloses an air vehicle capturing, connecting and separating device. The air vehicle capturing, connecting and separating device comprises an active unit and a passive unit. The active unit comprises a shell, a motor, a sliding lead screw and at least two capturing claws. The motor drives the sliding lead screw to rotate so that reverse motion of a nut and the capturing claws can be achieved. The passive unit comprises a passive part, a guiding rod and a pressing plate. The guiding rod is connected between the passive part and the pressing plate. The pressing plate slides on the guiding rod. Through the electric-driven hinged capturing claws, capturing, connecting and separating of air vehicles are achieved, and the air vehicle capturing, connecting and separating device has the advantages of being large in capturing range, simple in mechanism structure, low in mass and the like.

Carrier frequency estimation is completed in three phases: (1) receiver carries out coarse frequency estimation, (CFE) in order to locate frequency deviation correction within a small region; (2) non coherent auto frequency estimation (AFC) is carried out under obtained timing information is not completed; (3) coherent AFC is carried out under obtained timing information is completed i.e. the receiver enters into locking state, carrier frequency correction of data is completed by using a tracking loop in first order. The invention is realized at FPGA of Tsinghua DMB - T, ASIC version receiver. Favorable effect is obtained through actual try out broadcasting and testing, and performance is better than existing other system evidently.

A method and system for monitoring a driver is disclosed. Firstly, an inner cabin image of a vehicle's cabin is continuously captured. Next, a face detection of a driver for the inner cabin image is performed to obtain a face detection result. Next, the inner cabin image and the face detection result corresponding to the inner cabin image are stored. When the system observes that either the face of the driver is not detected or the face is not shown within a reasonable face region of at least two continuous inner cabin images according to each face detection result, the system outputs a warning signal to alert the driver. The invention determines a driving state of a driver in a cabin with a method of analyzing a position of a face or a head and using an image extractor having large capture range and a low resolution.

The invention belongs to the field of related equipment of deep sea rendezvous and docking and discloses a transportable type device applicable to capturing and butt joint of an underwater moving target. The transportable type device comprises a mechanical arm, a guide cover capturing unit, a light source guide unit and a butt joint unit, wherein the mechanical arm is designed into a multi-joint type underwater mechanical arm and can be folded and stored after operation is finished; the guide cover capturing unit is mounted at the tail end of the mechanical arm and has opening and closing functions, so that the capturing of the underwater moving target is finished; the light source guide unit is used for sensing a position and a posture of the underwater moving target; the butt joint unitis used for carrying out mutual and accurate butt joint on a butt joint socket for the underwater moving target through a plug manner. With the adoption of the transportable type device disclosed by the invention, capturing and butt joint operation of the underwater moving target can be finished under a moving state in a higher-precision manner; meanwhile, influences caused by seawater interference are effectively overcome, the capturing success rate and the capturing efficiency are remarkably improved, and the accuracy and applicability of the butt joint operation are ensured.

The invention discloses an adaptive under-actuated non-cooperative target capturing mechanism. An existing capturing mechanism is poor in adaptation of the size and shape of a target. A nut driving plate and a stretching platform form a helical pair with a first thread and a second thread of a variable pitch screw respectively; the nut driving plate is provided with an armature, and the stretchingplatform is provided with an armature and a travel switch; a mechanical arm driving plate is connected with the nut driving plate through a flexible connecting part; three five-rod type mechanical arm bodies are uniformly distributed in the circumferential direction and connected to the mechanical arm driving plate; a third connecting rod in each five-rod type mechanical arm body can cooperate with a torsional spring to be converted to be an under-actuated mechanism; mechanical arm tail end execution mechanisms are connected to the three five-rod type type mechanical arm bodies; a buffer guide mechanism is located in the center of the circumference where the three five-rod type type mechanical arm bodies are uniformly distributed. Accordingly, a single power source is adopted for achieving unfolding of three mechanical arms, the mechanism has the multi-degree of freedom and can flexibly adapt to target satellite spray pipes with different sizes and shapes.

The invention discloses a method and device for realizing attack processing and a honeypot deployment method, and the method at least comprises the steps: pulling a stored honeypot mirror image from ahoneypot mirror image cloud warehouse, wherein the honeypot mirror image is a honeypot structure supporting a multi-CPU architecture; creating a container on the cloud host, wherein the container correspondingly supports honeypots of different CPU architectures; capturing attack data through honeypots supporting different CPU architectures. According to the application, the capture range of honeypots is expanded based on a cloud deployment mode, an elastic and dynamic honeypot cluster management mode is realized, and the value of honeypot data is mined more deeply by combining big data analysis service on the cloud; moreover, based on the characteristics of the container, the honeypot deployment and maintenance cost is reduced, and the time is saved.

A method and apparatus for convolutional neural network (CNN) regression based 2D / 3D registration of medical images is disclosed. A parameter space zone is determined based on transformation parameters corresponding to a digitally reconstructed radiograph (DRR) generated from the 3D medical image. Local image residual (LIR) features are calculated from local patches of the DRR and the X-ray image based on a set of 3D points in the 3D medical image extracted for the determined parameter space zone. Updated transformation parameters are calculated based on the LIR features using a hierarchical series of regressors trained for the determined parameter space zone. The hierarchical series of regressors includes a plurality of regressors each of which calculates updates for a respective subset of the transformation parameters.

The invention discloses a flexible capturing connection device and a capturing connection method of the device. The device comprises a driving capturing connection unit and a driven capturing connection unit. The driving capturing connection unit comprises an upper connecting rod, a flange disc, a spherical head shaft, lead springs, a capturing rod, a guide head and a lock tongue, and the upper connecting rod is connected with the spherical head end of the spherical head shaft through the flange disc; the lead springs are in the pretightening state and are connected between the spherical head shaft and the flange disc; the spherical head shaft is connected with the capturing rod which is connected with the guide head; the lock tongue is arranged on the outer side, close to one end of the guide head, of the capturing rod; and the driven capturing connection unit comprises a conical opening and a lock hook, and the lock hook is arranged at the conical end of the conical opening. When capturing is completed, the guide head enters the conical opening, and the lock hook and the lock tongue are in contact for compressing. The method comprises the steps that the guide head enters the conical opening; the lock tongue and the lock hook generate spring lock capturing; a shifting rod rotates to trigger a sensor; and the driving capturing connection unit moves upwards, and the lock tongue and the lock hook are in contact for compressing. The device and method are simple in structure, small in mass and large in capturing range.

A photographing lens assembly includes seven lens elements, which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The third lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and at least one of an object-side surface and the image-side surface of the seventh lens element includes at least one inflection point. At least one surface of the seven lens elements is aspheric.

The invention relates to an automatic charging vehicle, including: an automatic walking module configured to travel to a device to be charged according to the route between the automatic charging vehicle and the device to be charged; a power module configured to store and provide energy; and an automatic docking and separation device configured to perform docking and separation between a first connector and a second connector capable of electrical contact with the first connector, wherein the first connector and the second connector are used for transmitting electric energy.The invention further relates to a method for running an automatic charging car and an automatic charging system. The automatic charging vehicle and the operation method thereof and automatic charging system can realizeautomatic walking and automatic docking, thereby greatly improving charging efficiency and reducing charging cost.

The invention relates to the technical field of artificial intelligence, and provides a video image recognition method based on artificial intelligence. The method comprises the steps of carrying outthe dynamic collection of the forward view angle of a vehicle in a vehicle driving process, and obtaining a plurality of collection data; performing video encoding and video decoding on the pluralityof acquired data to obtain a video image; determining a frame extraction frequency according to the front-end computing power of an embedded central processing unit CPU of the vehicle-mounted equipment; performing frame extraction on the video image according to the frame extraction frequency to obtain a plurality of video frames; sequentially identifying the plurality of video frames to obtain avehicle identification result of the vehicle and a marked line identification result of a traffic marked line passed by the vehicle; according to the vehicle identification result and the marked lineidentification result, analyzing the spatial position relationship between the vehicle and the traffic marked line to obtain a vehicle violation identification result; and uploading the vehicle violation identification result to a block chain. The method can be applied to a smart traffic scene, thereby promoting the construction of a smart city.

A micromechanical rotation rate sensor has a seismic mass and driving devices which cause a driving vibration of the seismic mass in a first direction x. The rotation rate sensor has measuring devices which measure a deflection of the seismic mass in a second direction y, and generate a deflection signal. The deflection includes a measurement deflection caused by a Coriolis force and an interference deflection, the interference deflection being phase-shifted with respect to the measurement deflection by 90°. Compensation devices are provided at the seismic mass to reduce the interference deflection. Regulation devices are provided, to which the deflection signal is supplied as an input variable, which demodulate an interference deflection signal from the deflection signal, and which generate a compensation signal from the interference deflection signal, which is supplied to the compensation devices.

A three-finger capture positioning mechanism relates to a robot tail end butting device and aims to solve the problems of small capture range and low correction capability of an existing robot tail end butting device. A worm shaft is mounted in a casing, an input end of the worm shaft is connected with an output shaft of a motor, two worm gears are meshed with teeth on the worm shaft and mounted on worm gear shafts, a single finger and double fingers are symmetric about the axis of the worm shaft, two single-finger connectors are mounted on one worm gear shaft, two double-finger connectors are mounted on the other worm gear shaft, a central line of a single-finger connecting arm and a central line of a double-finger connecting arm are positioned in the same plane, a V-shaped groove is arranged on a fixed plate, the fixed plate is fixedly connected with the casing, the V-shaped groove is positioned among the single finger and double fingers, the central line of the V-shaped groove is overlapped with the axis of the worm shaft, a handle on a capture joint device after capture is arranged in the V-shaped groove, and a V-shaped surface matched with the V-shaped groove is arranged on the handle. The three-finger capture positioning mechanism is used for a space robot to capture a floating target.

The invention discloses a three-coordinate radar technology based civil VAV capturing technology and a system thereof. The technology comprises that a three-coordinate radar technology is used to detect exotic objects in the air rotationally according to certain detection manner, a target signal is obtained, and the width of an orientation wave beam emitted during detection is greater than the width of an elevation angle wave beam; the target signal is received and processed to obtain and send a pre-processed signal; the pre-processed signal is received, digital processing is carried out on the pre-processed signal, and a distinguishable digital signal is obtained and sent; the digital signal is received and decoded to obtain a decoded signal; and the decoded signal is analyzed and determined, if the decoded signal is a UAV signal, a tracking and locking instruction is sent, and otherwise, rotary detection is continued. According to the three-coordinate radar technology based civil VAV capturing technology and the system thereof, the exotic objects in the air are searched, tracked and locked, the capturing range of the exotic objects in the air is increased, the speed is high, and the scanning range is wide.

The invention relates to the technical field of high-order APSK carrier synchronization, in particular to a phase tracking method of a low-earth-orbit satellite MAPSK communication system. Two phase discriminators are adopted, a loop filter with variable parameters is introduced, and the carrier recovery process is divided into coarse synchronization and fine synchronization; firstly, amplitude judgment is carried out on an MAPSK modulated signal, coarse synchronization is carried out on four constellation points with high signal-to-noise ratio on an excircle by using a polarity judgment algorithm of a simplified constellation, and at the moment, the bandwidth of a loop filter is relatively large, so that large frequency offset can be quickly captured; if the state controller finds that the loop filter is in a locked state by detecting the loop phase error, the loop filter is unlocked, it shows that the coarse synchronization is finished, the carrier recovery circuit is switched to thefine synchronization, phase discrimination is carried out on all constellation points by using a decision guide algorithm, and the loop filtering achieves the purpose of stable tracking through a small-bandwidth mode, thereby effectively improving the performance of the low-orbit satellite high-order APSK communication system.

The invention discloses a combined Doppler estimation method suitable for an underwater acoustic communication system. The method comprises the steps of S1, performing carrier capture and coarse synchronization by adding a start frame of an LFM+CW signal; and S2, performing fine synchronization by determining a peak value offset of an LFM signal. The step S1 includes the steps: after a first LFM signal is identified by an LFM pulse compression peak value obtained by the matched filtering, the single carrier is captured and coarsely synchronized by a COSTAS ring to obtain an initial Doppler estimation result, and the sampling rate is adjusted for the first time. Compared with the prior art, the method of the invention has the advantages of accurate and reliable estimation results, small calculation amount, simple realization, strong real-time performance, easy realization and so forth.

The invention relates to an automatic butt joint and separation device, which comprises a driving device and a driven device, wherein the driving device is provided with an actuating mechanism and a clamping jaw; under the condition that the driving device and the driven device are not in butt joint, the clamping jaw can be driven by the executing mechanism to extend out of the driving device andbe engaged with the driven device, and can be driven by the executing mechanism to retract to enable the driving device and the driven device to be in butt joint; under the condition that the drivingdevice is in butt joint with the driven device, the clamping jaw can separate the driven device from the driving device under the driving of the executing mechanism; and the driven device can be engaged with the clamping jaw in a detachable mode. According to the invention, automatic butt joint of a plug and a socket can be realized without good alignment of the plug and the socket, and automaticseparation of the plug and the socket can also be realized.

The invention discloses a mask alignment surface shape detection device for a DUV (deep ultra violet) photolithographic device. The mask alignment surface shape detection device comprises surface shape detection marks, an optical filter, a surface shape silicon photoelectric diode, an amplifier, a signal processing element, an analogue to digital conversion element, an operation processing element and an upper computer, wherein the surface shape detection marks include a plurality of independent detection marks; the optical filter comprises a plurality of optical filter units for converting DUV into visible light; the surface shape silicon photoelectric diode comprises a plurality of independent units; the amplifier comprises a plurality of paths of amplifier units; the signal processing element comprises a plurality of signal processing units; and the analogue to digital conversion unit comprises a plurality of analogue to digital conversion units for performing analogue to digital conversion on analogue signals output by corresponding signal processing units. The surface shape detection device comprises a plurality of detection units, and each detection unit is provided with onecorresponding detection mark, one optical filter unit, one silicon photoelectric diode unit, one amplifier unit, one signal processing unit and one analogue to digital conversion unit.

A photographing lens assembly includes seven lens elements, which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The third lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and at least one of an object-side surface and the image-side surface of the seventh lens element includes at least one inflection point. At least one surface of the seven lens elements is aspheric.

The invention concerns the adjustment of an oscillation frequency of an oscillator, in particular the digital coarse adjustment of a PLL oscillator by means of a circuit arrangement comprising at least one pair of capacitors (C, C′), of which first terminals are connected with the oscillator, and second terminals can selectively be connected by means of a switching arrangement with a first reference potential (vss), in order to incorporate the capacitor pair (C, C′) into an oscillating circuit of the oscillator, wherein the circuit arrangement comprises: first FETs (T1, T1′) for the respective connection of the second terminals with the first reference potential (vss), a second FET (T2) for the connection of the second terminals with each other, and third FETs (T3, T3′) for the respective connection of the second terminals with a second reference potential (vdd), which differs from the first reference potential (vss).

An alignment system uses a self-referencing interferometer that incorporates an objective lens system having a plurality of lens element groups. In an embodiment, the objective is configured and arranged to provide a large numerical aperture, long working distance, and low wavefront error.

A light barrier having a light emitter (9) spaced apart from a light receiver (10), the emitter including a light source (12) and transmission optics (13) emitting a substantially parallel light beam 11. The light receiver (10) and the light emitter (9) are aligned with each other for focusing the light beam (11) from the light emitter (9) by means of reception optics (15) on a reception element (17) for generating an electrical signal as a function of the light received. A partially reflecting optical boundary surface between the reception optics (15) and the reception element (17), and an alignment plate (18) which includes a light entry opening (19) and a target disk (20), are positioned in front of the reception optics (15) and are used for aligning the light receiver (10) and the light emitter (9).

A ring fiber core bird beak-shaped optical fiber optical tweezer system with a stable capturing function is characterized in that optical fiber optical tweezers are composed of a ring fiber core birdbeak-shaped optical fiber probe, a laser device, an adjusting frame, a sample groove, a microscopic imaging system, a Raman laser source and a Raman detector. The bird beak-shaped optical fiber probeis characterized in that evanescent field distribution of the side face of an optical fiber is enhanced by changing the curvature radius of a bent tip area of the optical fiber, gradient force borne by cells is increased, and therefore stable capture of the cells is achieved. Finally, Raman laser is emitted into the bird beak-shaped optical fiber optical tweezers, and corresponding Raman frequencyshift can be acquired through a detector, thereby realizing cell characteristic detection.