30results about How to "High precision tracking" patented technology

Disclosed is a wireless positioning system and method that can perform a high-precision position tracking. The wireless positioning system includes a target device that is an object of wireless positioning, beacon devices and a processing unit. The beacon devices transmits wireless signals and sense reception time points of the wireless signals transmitted from the other beacon devices and the target device and received at time points after the transmission of the wireless signal. The target device receives the wireless signal transmitted from at least one of the beacon devices, and then transmits the wireless signal to the beacon devices. The processing unit obtains the position of the target device by calculating distances between the beacon devices and the target device using information about the reception time points of the wireless signals sensed by the respective beacon devices.

The invention discloses an overlapped-vision-field multi-camera cooperative target positioning and tracking system. Pixel points in a side length range of the upper side of a rectangular frame of a foreground area are sampled, and combined with geometric constraint of multiple cameras to acquire target candidate foot points, meanwhile, peaks of the lower side of the rectangular frame for expressing pedestrians not in a shielded view angle between the targets are projected, and a center of gravity of each projection point is computed, and at last, the candidate points are weighted, and the position of the target is positioned by using the centers of gravity and the weighted candidate foot points. Compared with target tracking by using the single camera, the system using the multiple camerashas the advantages of wide monitoring range and many observation view angles, can acquire a robust tracking effect by using multi-camera environment constraint and multiple foreground information, and well solves the shielding problem appearing in a tracking process; therefore, even the target is in the shielded view angle, the target can still be positioned and tracked highly accurately, and good market application value is provided.

An image signal processing apparatus includes a detecting unit configured to detect a motion vector of a tracking point provided in an object in a moving image, a computing unit configured to compute a reliability parameter representing the reliability of the detected motion vector, a determining unit configured to determine whether the detected motion vector is adopted by comparing the computed reliability parameter with a boundary, an accumulating unit configured to accumulate the reliability parameter, and a changing unit configured to change the boundary on the basis of the accumulated reliability parameters.

The invention discloses a refrigeration type common-caliber m medium / long-wave infrared double-waveband double-view-field dual-shift zoom optical system. The system comprises a first double-crescent positive lens, a second double-crescent positive lens, a first double-crescent negative lens, a third double-crescent positive lens, a second double-crescent negative lens, and a first light splitting prism for reflecting medium-wave infrared light and transmitting long-wave infrared light which are successively arranged along an optical axis. A reflection optical path of the medium-wave infrared light passing through the first light splitting prism is successively provided with a fourth double-crescent positive lens, a dual separate lens group, a first dual convex lens, a second dual concave lens, a sixth double-crescent positive lens and a seventh double-crescent positive lens, and a transmission optical path of the long-wave infrared light passing through the first light splitting prism is successively provided with an eighth double-crescent positive lens, a second dual convex lens, a third dual concave lens, a third double-crescent negative lens and a ninth double-crescent positive lens. The dual separate lens group is composed of a first dual convex lens and a fifth double-crescent positive lens. According to the system provided by the invention, a target image can be tracked, detected and captured in a high-accuracy manner.

The invention provides a target attitude cooperative planning method and system of multistage composite control of a spacecraft. A designed spacecraft multistage composite control system comprises a star first-stage control system and a load second-stage control system, and a load and a star are required to track the same target attitude in a wide-angle agile maneuvering process of the spacecraft.The control periods of the star are different, the target attitude of the load within the control period deltat2 is calculated by employing an interpolation method in the condition of knowing the target attitude of a star platform. Firstly, a target attitude thetabr in a next control period deltat1 is calculated through a star attitude planning algorithm; then the load calculates a target attitude thetapr of the load within each deltat2 time by employing a Newton interpolation method in the condition of knowing the target attitude thetabr within the deltat1 time; and in the condition of knowing the target attitudes of the star and the load at each time point, the spacecraft multistage composite control system performs attitude control by employing a star and load two-stage PID controllerso that high-stability control of the optical load of the spacecraft is realized.

The invention provides a differential feeding sewing machine, the operability of which is improved during sewing. An upper feeder has a first upper feeding section 31 feeding an upper fabric in the vicinity of a sewing needle 11, a second upper feeding section 32 adjoining the first upper feeding section 31 along the direction of intersecting the feeding direction and feeding the upper fabric and a driving means capable of controlling individually the amount of feed. A lower feeder has a lower feeding section 70 feeding a lower fabric and a driving means therefor and has an action control means 80 controlling the action of each driving means on the basis of a setting input to determine the amount of feed of the first upper feeding section and the second upper feeding section and the lower feeding section, respectively for each of a plurality of sewing sections changed during sewing.

The invention provides an envelope tracking power supply based on a class-E DC (direct current)-DC converter. The envelope tracking power supply comprises an envelope detection circuit, a frequency conversion control circuit and a class-E DC-DC converter, wherein the class-E DC-DC converter consists of a drive circuit, a class-E inverting circuit, a matching network and a resonant rectification circuit. According to the envelope tracking power supply, signal envelop is obtained through envelop detection, then the conversion from the envelop to frequency is carried out, and the output power of the class-E DC-DC converter is controlled through continuous frequency scanning or discrete frequency scanning, so that the tracking on the original signal envelop of output voltage is realized. Because the class-E DC-DC converter has high efficiency near the center frequency of the class-E DC-DC converter, works at a high frequency range, and has large slew rate, the envelope tracking power supply disclosed by the invention has the characteristics of high efficiency, high tracking precision and the like.

Provided is a robot control device (5) which can make a robot arm follow workpiece which moves arbitrarily in high precision. The robot control device includes a feature-point detecting unit that detects, from an image of an object acquired by a visual sensor, the positions of a plurality of feature points on the object in a predetermined cycle; a position / orientation calculating unit that updates, in the predetermined cycle, respective equations of motion of the plurality of feature points on the basis of the detected positions of the plurality of feature points and that calculates the position or orientation of the object on the basis of the detected positions of the plurality of feature points calculated from the updated equations of motion; and a robot-arm-movement control unit that controls the movement of a robot arm so as to follow the object, on the basis of the calculated position or orientation of the object.

The invention discloses a servo system non-switching attraction repetitive control method adopting equivalent disturbance compensation. According to the method, a given module generates periodical reference signals, a periodical feedback link is created, equivalent disturbance compensation is introduced into a non-switching attraction law, and an observer is utilized to estimate equivalent disturbance; an ideal error dynamic state is established based on the non-switching attraction law, a controller is designed according to the ideal error dynamic state, and a signal obtained through calculation is used as control input of a servo system; and specific controller parameter setting can be performed according to system convergence performance representing indexes, and calculation formulas ofa monotone decreasing region, an absolute attraction layer, a steady-state error zone boundary and the maximum number of steps of a tracking error entering a steady-state error zone for the first time, all of which represent a tracking error convergence process, are given. According to the non-switching attraction repetitive controller with the equivalent disturbance compensation function, through estimation of equivalent disturbance, system tracking precision can be improved, and periodical disturbance can be completely suppressed.

A system for biometric staff management for a physical jobsite is disclosed. It uses a centralized reporting server and a multi-purpose computing device having authentication software and in communication with at least one biometric sensor. The jobsite workers who are users of said software authenticate into the system by using the at least one biometric sensor.

The invention discloses a method for calculating the bandwidth of a fast reflector, including the following steps: determining a design input; inputting the design input; analyzing and calculating thedesign input; and outputting the bandwidths of the fast reflector under different deflection ranges. The method relies on a simulink simulation platform. A calculation model is set up by using simulink, and codes are written by using a custom module Matlab Function of simulink. The function of the algorithm is achieved step by step, and the algorithm is encapsulated into a block diagram for calling. The method and the model have the advantages as follows: the bandwidth simulation calculation model can be applied to large-load fast reflectors; the calculation result of the bandwidth simulationcalculation model is in line with the practical application; the bandwidth simulation calculation model is simple and practical, and has high calculation efficiency; the bandwidth simulation calculation model can satisfy the bandwidth calculation requirements under different deflection ranges; by using the calculation method, the bandwidth can be maximized under each deflection range; and the application effect will be better under the condition of same bandwidth compared with different ranges.

In the disclosed method, a primary formed body (G1) is formed by a bead ring (25) being fitted to the outside of both ends in the widthwise direction of a cylindrical body having: a inner liner at the innermost periphery comprising butyl rubber; a film that is layered to the outside periphery thereof and that comprises a thermoplastic resin or a thermoplastic elastomer composition; and a carcass material disposed at the outside periphery thereof. The inner liner is prevulcanized in the state wherein the center in the widthwise direction of the primary formed body (G1) is caused to bulge in the outer peripheral direction and is held by suction to the inner peripheral surface of a transferring / holding mold (9) that has a similar shape to the outer peripheral surface of a rigid inner mold (11). After the rigid inner mold (11) is interpolated in the primary formed body (G1), the suction of the transferring / holding mold (9) is suspended, the primary formed body (G1) is transferred to the outer peripheral surface of the rigid inner mold (11), a green tire is formed at the outer peripheral surface of the rigid inner mold (11), and this green tire is vulcanized.

The invention discloses a liquid crystal laser steering gear. The liquid crystal laser steering gear comprises multiple structure layers distributed up and down. Each structure layer comprises a firstsubstrate, a liquid crystal molecular layer and a second substrate. Each first substrate sequentially comprises first substrate glass, a first ITO electrode layer and a first orientation layer from top to bottom. Each second substrate sequentially comprises a second orientation layer, a second ITO electrode layer and second substrate glass from top to bottom. The liquid crystal molecular layers are located between the first orientation layers and the second orientation layers, and multiple spacers with the same height are sprayed into the liquid crystal molecular layers for supporting. The edges of the first substrates and the edges of the second substrates are sealed and packaged through frame glue. The deflection angle of emergent light is adjusted by changing the width of each region,the thickness of a liquid crystal box and voltages, light beams are tracked at high precision, the liquid crystal laser steering gear has the advantages of high precision and rapid response, and meanwhile wavefront distortion can be reduced.

The invention relates to a photovoltaic power generation physical reference control method, in particular to a control method adopting physical reference, and belongs to the field of photovoltaic power generation or optimal control methods. The photovoltaic power generation real object reference control method realizes the maximum output power of the photovoltaic cell. According to the first method, the open-circuit voltage and the short-circuit current of the reference photovoltaic cell are measured, the optimal reference resistance is calculated, and the working photovoltaic cell is controlled to reach the maximum output power. The second method comprises the following steps: measuring the open-circuit voltage and the short-circuit current of the reference photovoltaic cell, measuring the current at 80% of the open-circuit voltage and the voltage at 80% of the short-circuit current, calculating the optimal reference resistance, and controlling the working photovoltaic cell to reach the maximum output power. The third method comprises the following steps: measuring the open-circuit voltage or short-circuit current of the reference photovoltaic cell, scanning in a range of 50%-100% of the open-circuit voltage or short-circuit current, measuring the current or voltage at the same time, calculating the voltage and current or optimal reference resistance when the maximum output power is recorded, and controlling the working photovoltaic cell to reach the maximum output power.

The invention discloses a tracking device, an information processing method, a readable storage medium, and electronic equipment. The tracking device can be used for tracking a target object more precisely. The tracking device includes an acquisition unit, a direction determination unit, and a position determination unit. The acquisition unit acquires, from a camera whose installation position andimaging center direction are known in a facility, region data specifying a region in which an existing object is reflected in an image captured by the camera, and distance data specifying a distancefrom a preset reference position to the object. The direction determination unit determines, on the basis of the area data acquired by the acquisition unit, the amount of shift between the direction from the camera to the object and the imaging center direction. The position determination unit determines the position of the object in the facility on the basis of the installation position of the camera, the imaging center direction, the amount of displacement determined by the direction determination unit, and the distance data acquired by the acquisition unit.

The invention discloses a refrigeration type common-caliber m medium / long-wave infrared double-waveband double-view-field dual-shift zoom optical system. The system comprises a first double-crescent positive lens, a second double-crescent positive lens, a first double-crescent negative lens, a third double-crescent positive lens, a second double-crescent negative lens, and a first light splitting prism for reflecting medium-wave infrared light and transmitting long-wave infrared light which are successively arranged along an optical axis. A reflection optical path of the medium-wave infrared light passing through the first light splitting prism is successively provided with a fourth double-crescent positive lens, a dual separate lens group, a first dual convex lens, a second dual concave lens, a sixth double-crescent positive lens and a seventh double-crescent positive lens, and a transmission optical path of the long-wave infrared light passing through the first light splitting prism is successively provided with an eighth double-crescent positive lens, a second dual convex lens, a third dual concave lens, a third double-crescent negative lens and a ninth double-crescent positive lens. The dual separate lens group is composed of a first dual convex lens and a fifth double-crescent positive lens. According to the system provided by the invention, a target image can be tracked, detected and captured in a high-accuracy manner.

The invention discloses a tracking device, an information processing method, a readable storage medium and electronic equipment. The device comprises an acquisition part, a direction judgment part, afirst position judgment part and a second position judgment part. The acquisition unit acquires, from a plurality of cameras, region data indicating a region of an existing object and distance data indicating a distance to the object. The direction determination unit performs a process for determining, on the basis of the region data, the amount of displacement from the cameras to the direction ofthe object and the direction of the imaging center. The first position determination unit performs processing for determining the position of the object in the facility on the basis of the installation position of the cameras, the imaging center direction, the amount of displacement, and the distance data with respect to the plurality of cameras. The second position determination unit determinesthe position of the same object at the same time from a plurality of positions determined to be within the error range with respect to the same time, and determines the positions of different objectsat the time from a plurality of positions determined to be outside the error range.

The invention discloses a welding track tracking method. A single laser beam is used to irradiate the weld along the length direction of the weld, and the laser beam is reflected to the photosensitive element through the weld and the areas on both sides of the weld to generate corresponding electrical signals. Using the measurement principle of single-point laser triangulation, calculate the distance between the laser generating device and the welding plate, and measure the average value of the entire laser beam distance, and judge whether the welding track is offset by the average value of the distance; when the welding track exists When offset, the signal is fed back to the position adjustment mechanism on the welding machine to adjust the welding track. The present invention utilizes the height difference when the ranging laser beam moves from one side of the weld to the other side, resulting in different average values ​​and a linear change interval, and judges the offset of the welding track according to the average height difference, which is in the process of measurement It will not be affected by external light, especially the intensity of welding arc light, the measured data is stable and reliable, and has the actual application conditions of welding tracking.

A target attitude collaborative planning method and system for multi-level composite control of a spacecraft. The designed multi-level composite control system for a spacecraft includes a first-level control system for a star and a second-level control system for a load. The payload and the star are required to track the same target attitude during the large-angle agile maneuvering of the spacecraft. Due to the different control periods of stars, it is necessary to use the interpolation method to calculate the load control period Δt under the condition that the target attitude of the star platform is known. 2 target pose in time. First, the next control cycle Δt is calculated by the star attitude planning algorithm 1 The target pose θ within br . Then, load at a known Δt 1 The target pose θ in time br , using the Newton interpolation method to calculate each Δt 2 The target attitude θ of the load in time pr . In the case that the target attitude of the star and the payload at each time point is known, the spacecraft multi-level composite control system uses the star and payload two-stage PID controllers for attitude control to achieve high stability control of the spacecraft optical load.

Provided is a surveying instrument including a distance measuring light projector configured to project a distance measuring light to an object, a distance measuring light receiver having a photodetector configured to receive a reflected distance measuring light from the object, a tracking light projector configured to project a tracking light to the object, a tracking light receiver having a tracking photodetector configured to receive a reflected tracking light from the object, and an image pickup module configured to receive a background light, in which the distance measuring light projector and the tracking light projector include a first deflecting optical member, and the distance measuring light projector, the tracking light projector, and the image pickup module include a second deflecting optical member.

The present invention provides a measurement system, a measurement method and a storage medium for performing various measurements such as a tsunami based on the captured images by simultaneously photographing the same photographing target area with a plurality of cameras installed at different locations. The measurement system uses a photographic unit that captures images of the same photographic target area simultaneously through multiple cameras set at different locations, including mechanical control based on angle feedback and image measurement control based on image photography and image processing, and integrates mechanical control and The two-stage control unit of the image measurement control, in the mechanical control, roughly adjusts the line of sight of each camera so that each camera can capture the image within the shooting target area through the mechanical control based on the angle feedback obtained by the angle sensor. In the image measurement control of a part of the shooting target, each camera takes a photo and feeds back the captured image to precisely control the line of sight of each camera.

The invention relates to the technical field of automatically tracking the sun, and discloses a method for automatically tracking the sun and an automatic tracking system. The automatic tracking system comprises a photoelectric tracking system and a tracking actuating mechanism, wherein the tracking actuating mechanism comprises an east-west sun-around rotating mechanism and a north-south sun-around angle regulating rotating mechanism, the sun-around angle rotating mechanism comprises a ring gear 4 and a pinion 5 which are meshed and connected, the pinion 5 is connected with a stepping motor and arranged on a supporting base 6, two ends of the ring gear 4 are hinged with a main shaft 7 arranged in the center of a solar panel support 8, and the main shaft 7 rotates relative to the supporting base 6, a gear 3 arranged on the main shaft 7 is meshed and connected with a gear 9 arranged on a stepping motor shaft fixed on the solar panel support 8, and the solar panel support 8 rotates relative to the main shaft. According to the invention, the movement of solar rays can be automatically tracked, the plane where an energy transformation component of solar energy equipment is ensured to be vertical to the solar rays all the time, and the energy utilization ratio of receiving equipment is increased.

The invention provides an information processing apparatus and an information processing method for tracking movement of a user with high precision. The information processing apparatus estimates an action of a user who moves on a route formed by a plurality of segments by using a plurality of transportation means including at least a public transportation means. The apparatus comprises a first obtaining unit that obtains operation-related data which is data of operation services of the public transportation facility, and which represents a scheduled departure and arrival time for each segment; a second obtaining unit that obtains a scheduled movement route which is a set of a plurality of segments; a creation unit that obtains location information from a user terminal in a periodic manner, and creates movement track record data including the location information; and an estimation unit that estimates, based on the movement track record data and the operation-related data, a transportation means used by the user, and an entering and a leaving time thereof, with respect to a corresponding segment.