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91results about How to "Large capture range" patented technology

Self-adaption claw mechanism of spatial on-orbit service robot

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.
Owner:BEIHANG UNIV

Transportable type device applicable to capturing and butt joint of underwater moving target

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.
Owner:HUAZHONG UNIV OF SCI & TECH

Adaptive under-actuated non-cooperative target space capturing mechanism

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.
Owner:ZHEJIANG SCI-TECH UNIV

Flexible capturing connection device and capturing connection method thereof

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.
Owner:SHANGHAI AEROSPACE SYST ENG INST

Video image recognition method based on artificial intelligence and related equipment

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.
Owner:PINGAN INT SMART CITY TECH CO LTD

Three-finger capture positioning mechanism

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.
Owner:HARBIN INST OF TECH

Three-coordinate radar technology based civil UAV (Unmanned Aerial Vehicle) capturing technology and system thereof

InactiveCN106338716ALarge capture rangeFast track capture functionWave based measurement systemsTarget signalRadar
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.
Owner:成都老鹰信息技术有限公司

Phase tracking method of low earth orbit satellite MAPSK communication system

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.
Owner:中国星网网络应用有限公司

Mask alignment surface shape detection device for DUV (deep ultra violet) photolithographic device

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.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD +1
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