774results about How to "Avoid precision" patented technology

The invention provides a tire transfer robot which comprises a transfer robot body, a tire grabbing device, an infrared distance measuring sensor and a robot controller, wherein the tire grabbing device is mounted on the transfer robot body; the infrared distance measuring sensor is connected with the robot controller, and is used for detecting the target position in real time and transferring the position information to the robot controller; the robot controller is connected with the transfer robot body. The transfer robot, which is higher in movement and operation precision, has a vertically-hung six-degree-of-freedom rectangular coordinate structure, and the tire grabbing device driven by a cylinder are adopted, the grabbing range is adjustable, and the high-precision and large-stroke movement requirement can be achieved; based on the closed-loop path planning method of a sensor and an intelligent instruction system, the teaching programming time of an operator is saved greatly, and the operation efficiency of the robot is improved; the open-type robot control system structure helps a developer to expand and develop the robot control system in the follow-up stage, and the flexibility of the system is improved.

The invention relates to a multi-scale normal feature point cloud registering method. The multi-scale normal feature point cloud registering method is characterized by including the steps that two-visual-angle point clouds, including the target point clouds and the source point clouds, collected by a point cloud obtaining device are read in; the curvature of radius neighborhoods of three scales of points is calculated, and key points are extracted from the target point clouds and the source point clouds according to a target function; the normal vector angular deviation and the curvature of the key points in the radius neighborhoods of the different scales are calculated and serve as feature components, feature descriptors of the key points are formed, and a target point cloud key point feature vector set and a source point cloud key point feature vector set are accordingly obtained; according to the similarity level of the feature descriptors of the key points, the corresponding relations between the target point cloud key points and the source point cloud key points are preliminarily determined; the wrong corresponding relations are eliminated, and the accurate corresponding relations are obtained; the obtained accurate corresponding relations are simplified with the clustering method, and the evenly-distributed corresponding relations are obtained; singular value decomposition is carried out on the final corresponding relations to obtain a rigid body transformation matrix.

The invention discloses a metal wire rod precision alignment cutting device and a method. The device comprises a double-layer machine frame. A front end guiding tank, a revolving alignment tank, a traction mechanism, a back end guiding tank, a cutting mechanism and a machinery sizing mechanism are arranged on the top portion of the double-layer machine frame. The revolving alignment tank comprises a revolving alignment straight tank support seat, an alignment guiding tank, a plurality of alignment modules and a protection cover. The traction mechanism comprises a traction mechanism support seat, a servo motor, a driving friction wheel and a driven friction wheel. The cutting mechanism comprises a cutting wheel support frame, an air cylinder, a cutting wheel motor and a slice-shaped cutting wheel. The machinery sizing mechanism comprises a horizontal scale plate, a pressure sensor, an infrared transmitting sensor and an infrared receiving sensor. The method includes the steps that the metal wire rod enters the revolving alignment tank through a front end guiding rank. The metal wire rod is alignmented, tracted, cut and prepared and enters the next working circulation. The metal wire rod precision alignment cutting device and the method is high in automatic degree. The shape of the cut metal line segment and the size precision are high. The cutting opening is smooth, free of deckle edge and free of splitting off. The metal wire rod precision alignment cutting device and the method are strong in practicality.

The invention discloses a camera focusing device, which comprises a ranging sensor, a control module and a focusing module. The invention further discloses a camera focusing method. The method comprises the following steps that (1) the ranging sensor measures a distance from a tested object to the ranging sensor, and transmits the measured distance information to the control module; (2) the control module receives the distance information transmitted by using the ranging sensor, judges according to the distance information, and transmits a control signal to the focusing module; and (3) the focusing module focuses according to the control signal transmitted by using the control module. According to the camera focusing device and the camera focusing method, the focusing times are not required to be controlled through a focusing key, and the zooming magnitude is determined according to the distance of the tested object for adjusting a focal length, sensed by the range sensor, so that the defects of slow response, poor sensitivity and low accuracy of the focusing key used in the prior art are overcome, and camera focusing can be realized flexibly and rapidly.

The invention discloses an image retrieval system integrating classification with hash partitioning, which comprises a downloading module, a classification module training module, an image classification module, a characteristic extraction module, a recording table building module, a partitioning module, a request processing module, a retrieval module, a similarity acquiring module and a result returning module. The downloading module is used for downloading images so as to build an image library, the classification model training module classifies the images in the image library according tothe shapes and selects representative sample images from the image library to form a sample library firstly, then extracts characteristic descriptors of the classification bottom layer of all images in the sample library and performs trainings on the characteristic descriptors of the classification bottom layer by a support vector machine so as to obtain discriminant of each classification. Classification models are formed according to the discriminants of all the classifications. Precision ratio of the image retrieval system is increased, the problem of low recall ratio during classificationmistakes is overcome, and the retrieval speed of the image retrieval system is increased integrally.

The invention provides a method and a system for controlling a working state of a touch screen of a mobile terminal. The mobile terminal comprises an infrared proximity sensor and an ambient light sensor. The infrared proximity sensor is used for sensing infrared light intensity values, and the ambient light sensor is used for sensing ambient light intensity values. The method includes steps of detecting whether communication operation is carried out or not; acquiring an infrared light intensity value sensed by the infrared proximity sensor if the communication operation is carried out; detecting to judge whether the infrared light intensity value is larger than a proximity threshold value or not; acquiring an ambient light intensity value sensed by the ambient light intensity sensor if the infrared light intensity value is larger than the proximity threshold value; detecting to judge whether the ambient light intensity value is smaller than a preset intensity value or not; and locking the touch screen if the ambient light intensity value is smaller than the preset intensity value. The method and the system have the advantage that the threshold value of the infrared proximity sensor is set, so that influence of ambient light on the accuracy of a detection function of the infrared proximity sensor can be prevented.

The invention discloses an online detection method for water in a continuous grain drying process. Water is calculated by using a relation of water and volume weight. The online detection method has the advantages of simple structure, convenience in installation, simplicity in operation, strong interference resisting capacity, good environmental suitability and the like, is suitable for a continuous drying operation of crops such as corns, rice and wheat, and avoids main defects of detection of water in the prior art.

The invention discloses a millimeter wave rectangular-circular transition integrated corrugated horn antenna and a processing method and adopts integrated disposable electroforming for processing. A shell is internally provided with an inner cavity communicating from top to bottom in the shell, and the inner cavity consists of a corrugated inner wall radiation section, a circular waveguide extension section, a rectangular-circular transition waveguide section and a rectangular waveguide extension section from top to bottom, and one end of the port of the rectangular waveguide extension sectionin the shell is assembled with a connection part through sleeve joint. The corrugated horn antenna is electroformed by an inner core with the structure the same as that of the inner cavity, the integrated structure is adopted instead of various independent parts, the discontinuity of inner section change and deteriorated smoothness of a transition part caused by the processing dimension difference of all components, assembly and positioning error and other reasons are avoided, voltage standing wave ratio is reduced and antenna performance is improved, and compared with the traditional discrete part scheme, the scheme also reduces the requirement on processing accuracy properly. In the invention, the antenna performance, production technology complexity and time cost are all improved.

The invention relates to a screen unlocking method. The screen unlocking method comprises the following steps: an electronic device receives an unlocking operation of a user; the electronic device judges whether the unlocking operation is matched with an existing unlocking scheme or not and unlocks when the unlocking operation is matched with the existing unlocking scheme, wherein the existing unlocking scheme comprises the unlocking operation in an unlocking region, the unlocking region is a touch screen any region or an appointed unlocking region, and the unlocking operation is one or combination of single click, double click, and long-press; therefore, the convenience and the variety of the unlocking manner are realized; after being unlocked, the touch screen can automatically enter an appointed application program interface according to the configuration of the user so that the operation is simplified; simultaneously, the position of the unlocking region on the touch screen is random so that the problem of reduced abrasion, sensitivity and precision of the touch screen caused by long-term operation on a constant region can be effectively avoided.

The invention discloses a man-robot communion safety protection control system based on vision. The man-robot communion safety protection control system based on the vision comprises a safety protection control unit, a vision tracking unit and a robot control unit. The safety protection control unit receives operator body skeleton data acquired by the vision tracking unit and joint position data fed back by the robot control unit, a safety protection model of a robot and an operator is established, the site behavior evolution at the next moment is forecasted according to a movement trail of the robot and the body skeleton data, the minimum distance between the robot and the operator is calculated on the basis of the protection model, and therefore collision forecasting is conducted, localpath planning and correction are conducted on collision which possibly happens, then the robot is controlled to respond to the collision which possibly happens in the man-robot collaboration process,and finally safety protection control in the man-robot collaboration process is achieved. The man-robot communion safety protection control system based on the vision is simple in structure and easy to engineer, and can provide safety protection of a three-dimensional space for man-robot collaboration.

A large wind-proof daylight collector able to automatically track sun is composed of a daylight gathering module array, supporting frame, azimuth and altitude angle driver, a tracking controller, andazimuth and altitude angle sensors for sending the signals to the tracking controller. Its advantages are simple structure and wind-proof performance and high tracking precision.

The invention discloses a method for realizing gray scale controllability of an LED (Light-Emitting Diode) constant-current driver. The method comprises the following steps of: according to a needed gray scale, controlling digits for storing data of data registers; when m gray scales (m(n) are needed, storing the data by the m data registers; resetting and zeroing to enable the data stored in residual (n-m) data registers to be zero so as to obtain the data type of the gray scale; and transmitting the data to a counting comparison module in parallel by the n data registers to generate a corresponding duty ratio signal driving output. According to the invention, the defects in the prior art are overcome; an LED driver is applicable to random display of 1-16-bit gray scales and a shifting register does not need to be fully filled; a chip can sufficiently utilize a clock frequency so that the requirements of the chip on the clock frequency are reduced; the cascading working capability of the chip of the driver is stronger; and furthermore, the invention further discloses the LED constant-current driver capable of realizing the gray scale controllability.

The invention discloses high-precision vegetable and fruit quick intelligent selecting equipment. The high-precision vegetable and fruit quick intelligent selecting equipment comprises a feeding conveying device, a horizontal conveying device and a pneumatic mechanism, wherein a horizontal conveyer belt comprising rollers is arranged on the horizontal conveying device; one or more groups of screening and discharging mechanisms which are opposite to the pneumatic mechanism in an up and down manner are arranged above the horizontal conveying belt; each screening and discharging mechanism comprises a discharging platform which is fixedly arranged above the horizontal conveying device; anti-falling baffles are respectively arranged on the front side and the rear side of each discharging platform; a rotational flow cover is arranged on each discharging platform; the side edge of each rotational flow cover is arc-shaped; a substandard product blowing-out opening is formed by two side edges of each rotational flow cover and two side edges of the corresponding discharging platform; each substandard product blowing-out opening is in up-and-down correspondence with air jet holes of the pneumatic mechanism. According to the high-precision vegetable and fruit quick intelligent selecting equipment disclosed by the invention, the screening and discharging mechanisms adopting special structures, a feeding and conveying device and rollers in the horizontal conveying device are arranged, the effects of positioning and precise photographing of vegetables and fruits are increased in an omnidirectional manner, and the screening efficiency is also greatly improved.

A panel-type input device including a first electrode plate, a second electrode plate and an intermediate layer fixing the first electrode plate to the second electrode plate. The first electrode plate includes a first substrate and a first conductive coat on the first substrate. The second electrode plate includes a second substrate and a second conductive coat on the second substrate, the second conductive coat being formed by using a conducting polymer. The intermediate layer is provided along outer edges of mutually opposed first and second conductive coats and ensures a spacing distance therebetween. The first and second electrode plates have a frame area including a region in which the intermediate layer is provided, and an input-permissible area surrounded by the frame area. When the panel-type input device is attached to an object with the first electrode plate being laid on the object, the second electrode plate is disposed in such a manner that an outer peripheral portion of the input-permissible area, adjoining the frame area, is exposed so as to permit an input operation.

The invention discloses a confocal transverse scanning device and a confocal transverse scanning method based on a reflection type liquid crystal spatial light modulator, belongs to the technical field of optical precision measurement, and in particular relates to a confocal microscope and a scanning method thereof. The reflection type liquid crystal spatial light modulator is adopted to take the place of a transverse scanning mechanism in a conventional confocal transverse scanning device; and by changing the phase driving spectrum loaded by the reflection type liquid crystal spatial light modulator, the two-dimensional deviation of a light beam is realized, and the non-mechanical transverse scanning is realized. Due to such design, the microscope and a tested object both do not need to be transversely moved, but the transverse light beam scanning on the tested object is realized; not only is the precise and complex control on a three-dimensional micro-displacement platform avoided, but also the scanning precision and the repetitiveness are improved; and particularly, the effect is more remarkable for easily-deformed samples, so that the types of measured samples are widened.

The invention provides an integrated dynamic weighing system for rectifying illegal driving. The system comprises an integrated weighing platform used for bearing weighed vehicles which drive by, six perpendicular force sensors used for detecting perpendicular force applied on the integrated weighing platform, two horizontal force (pulling force / pressure) sensors used for detecting horizontal force applied on the integrated weighing platform, and a data acquisition controller used for processing weighing data. By installing the horizontal force (pulling force / pressure) sensors on a pull rod stop device and through the data acquisition controller for processing signals detected by the pulling force sensors and a weighing sensor, cheating vehicles are identified and final weight values is corrected. Cheating behaviors such as jumping pounds, S shape, snub and the like are inhibited effectively. Thus, vehicle weighing accuracy is raised. The invention provides an integrated dynamic weighing method for rectifying illegal driving. According to the method, vehicle weight is calculated by difference, axial position computing method and integral axis group weight algorithm.

The invention relates to an electromagnetic induction energy-supply device used for implantation-type medical equipments, which comprises a transmitting circuit arranged in vitro and a receiving circuit implanted in vivo; the receiving circuit in vivo comprises a receiving coil composed by the spiral inductance coil with board non-core plane, a rectifier circuit and a filter circuit which are connected with the receiving coil sequentially; the transmitting circuit in vitro comprises a transmitting coil composed by the spiral inductor with board non-core plane and a launching driving circuit which is connected with the input end of the transmitting coil and comprises a power circuit, an oscillation circuit and a power amplification circuit. The device adopts the electromagnetic induction principle to transmit the transcutaneous energy from an external control module, thus realizing the energy-supply to the implantation-type medical equipments, and is applied in the implantation-type medical equipments.

The invention discloses an integrated optical vector-matrix multiplier. The optical vector-matrix multiplier comprises extensible inner product operation units formed by a plurality of tunable micro-ring resonators which have a parallel waveguide structure and are arranged in a one-dimensional manner. The optical vector-matrix multiplier realizes a multiplication between a matrix M*N and a vectorN*1 by employing the integrated optical mode, wherein elements in the matrix and the vector are all binary numbers (0 or 1) and M and N are natural numbers. The integrated optical vector-matrix multiplier based on the micro-ring resonators is high in integrated level, good in scalability and convenient in integration with electric elements, and enables to raise information transfer rates, reduce information transfer delays, avoid disadvantages of poor precision and weak programmable ability of analog optical computing systems and solve the problem of low space diversity efficiency of traditional optical vector-matrix multiplier.

A plurality of modified parts are formed at a first formation pitch for a line arranged along the M-plane of a single-crystal sapphire substrate to construct a modified region and cause a fracture occurring from the modified region to reach a principal surface of the single-crystal sapphire substrate. A plurality of modified parts are formed at a second formation pitch narrower than the first formation pitch for a line arranged along the A-plane of the single-crystal sapphire substrate to construct a modified region and cause a fracture occurring from the modified region to reach the principal surface of the single-crystal sapphire substrate. Along the lines, a knife edge is pressed against a wafer from the side of the single-crystal sapphire substrate opposite from the principal surface of the single-crystal sapphire substrate where the fractures have reached, to cut the wafer along the lines.

The invention discloses a data processing method and system applied to an edge computing gateway. The method comprises: acquiring industrial application data generated when each industrial device in aproduction system performs application operation, performing data preprocessing on the industrial application data, and forwarding the industrial application data to a plurality of data branches, sothat each data branch performs corresponding branch data processing; storing the industrial application data subjected to branch data processing into corresponding storage spaces in a classified manner, and monitoring the space capacity of each storage space in real time; and when the space capacity of the current storage space is insufficient, executing a corresponding space management strategy according to the data volume of the industrial application data needing to be stored, and transmitting the generated space early warning log to a cloud server, so that the cloud server executes a corresponding decision strategy according to the log level of the current log. According to the invention, the problems that the existing intelligent execution system lacks real-time management on the equipment data acquisition end and abnormal events cannot be discriminated and fed back in real time are solved.

The invention discloses a reactive power synergic control method and system of a large-scale energy storage participating in new energy field station. According to the method, an energy storage converter is divided to active power synergic control group and a reactive power synergic control group, wherein the active power synergic control group is in a way that an active power is controlled with full capacity, smooth wind light output is performed and an active power target value of the full station is traced, and the reactive power synergic control group is in a way that a reactive power is controlled with full capacity, a reactive power voltage demand of a grid-connected point is traced, and reactive power standby of each reactive power source in the new energy field station is optimized. By the method, active power and reactive power decoupling control of large-scale energy storage under different control periods is achieved, the influence of active power and reactive power simultaneous control of an energy storage converter on stability and accuracy of active power control can be prevented, the smooth wind light output fluctuation of the energy storage is achieved, the influence of active power fluctuation on a voltage of the grid-connected point is reduced, the reactive power target control of the energy storage participating in tracing the voltage of the grid-connected point is also achieved, enough reactive power standby is reserved, and the grid-connected running stability of new energy power generation is improved.

A rotation angle detecting device includes a magnet, a magnetic flux concentrator, a first magnetic sensor, and a second magnetic sensor. The magnet is provided in a rotary member and is substantially coaxially aligned with a rotational axis thereof. The magnet has a magnetic flux generation section and a magnetic flux absorption section oriented in radial directions vertical to the rotational axis. The magnetic flux concentrator is made of a magnetic material and rotates integrally with the magnet. The magnetic flux concentrator is substantially coaxially aligned with the rotational axis and disposed substantially parallel to the magnet. The first and second magnetic sensors are disposed between the magnet and the magnetic flux concentrator at a predetermined angle away from each other in a rotational direction. The rotation angle detecting device detects the rotation angle of the rotary member based on magnetic flux passing through the first and second magnetic sensors.

The embodiment of the present invention discloses a method for determining a motion vector predicted value and a related device. The method includes: acquiring the motion vector precision of a block to be processed; acquiring at least one first predicted motion vector of the block to be processed; determining a target predicted motion vector according to the motion vector precision and the at least one first predicted motion vector, wherein the target predicted motion vector has the motion vector precision; after the target predicted motion vector is obtained, using the target predicted motionvector as a decoding-side motion vector to derive a DMVD motion vector predicted value to be inserted into a candidate motion vector predicted value list, wherein the candidate motion vector predicted value list also has the motion vector precision. The method in the embodiment of the invention can further shorten the encoding and decoding time, reduces a code rate, and increases video transmission efficiency.

A plurality of modified parts are formed at a first formation pitch for a line arranged along the M-plane of a single-crystal sapphire substrate to construct a modified region and cause a fracture occurring from the modified region to reach a principal surface of the single-crystal sapphire substrate. A plurality of modified parts are formed at a second formation pitch narrower than the first formation pitch for a line arranged along the A-plane of the single-crystal sapphire substrate to construct a modified region and cause a fracture occurring from the modified region to reach the principal surface of the single-crystal sapphire substrate. Along the lines, a knife edge is pressed against a wafer from the side of the single-crystal sapphire substrate opposite from the principal surface of the single-crystal sapphire substrate where the fractures have reached, to cut the wafer along the lines.

The invention discloses a portable spliced guide rail, a butt joint method and a work fixture. The spliced guide rail is divided into a base section part, an extension section and a tail section which are mutually in butt joint along a cross section direction, wherein butt joint faces are connected in a mutual intersection manner, so that the defects of poor butt-joint stability, low connection strength and difficult in precision guarantee on the same horizontal plane are avoided. On the butt joint faces of a guide rail body, two pairs of positioning pins and positioning holes are adopted, sothat the positioning is accurate and the positional connection is reliable; guide posts and guide faces are mutually matched so that the splicing accuracy is enhanced; and auxiliary dowel shafts are used for fixed connection so that the structural stability and the integrity of the spliced guide rail are ensured, and the specially designed work fixture ensures that the butt joint process of the guide rail is more accurate and easier to operate. The entire spliced guide rail has a simple structure, is convenient for butt joint, and can be dismounted and assembled without professional personnel, and the extended guide rail is beneficial to enlargement of an applicable range for product processing and is suitable for popularization and application in various industries and fields.

The invention provides an on-line closed loop optimally-adjusting-and-controlling method for a mine ventilation system. A constructed mine ventilation on-line closed loop optimally-adjusting-and-controlling system comprises a mine ventilation monitoring platform, air needing air flue state collecting subsystems distributed to air needing air flues, draught fan working condition collecting subsystems distributed to the air needing air flues and adjusting and controlling subsystems distributed to adjusting air flues and used for adjusting the wind resistance change amount of a wind resistance adjusting device. According to the on-line closed loop optimally-adjusting-and-controlling method, as the actual measurement air supply amount of wind needing points and draught fan actual working conditions are directly used for calculating target function values, and the actual adjusting amount of the wind resistance adjusting device serves as a control strategy, the problems of inaccuracy, agnosticism and the like of parameters of the ventilation system can be effectively solved, a large number of state identification sensors of the ventilation system can be saved, and more importantly, the adjusting effect can be directly obtained. On-time as-required low-power-dissipation air supply of the mine ventilation system is fundamentally guaranteed, and airflow control over the mine ventilation system in the normal period and the catastrophe period can be effectively achieved through the method.

The invention discloses a tree-structure-based question answering system and method. A tree structure is built according to correlation of all question service attributes and different levels of all questions under services that the questions belong to; each node of the tree structure stores the questions and corresponding answers; each node of the tree structure is provided with a node identifier. The node questions and node identifiers in the tree structure are displayed to a client; after the node identifiers transmitted by the client over internet are received, the questions stored in the nodes corresponding to the node identifiers and the corresponding answers are supplied to the client. The tree-structure-based question answering system and method provides questions of the client with more accurate answers, so that user experience of the client is improved.

The system comprise: a revolving server, a click server and a statistic server. Wherein, the resolving server is used for receiving the click to the point already exposed, and based on said click, the statistic server provides the click information; the statistic server is used for counting the click when determining the exposure information matches the click information. The invention also reveals a method thereof.

The invention discloses an automatic feeding and extrusion forming machine. The automatic feeding and extrusion forming machine is characterized by comprising a charging box, an automatic feeding mechanism, an extrusion forming mechanism and a control system, wherein the automatic feeding mechanism and the extrusion forming mechanism are connected with the control system respectively; the automatic feeding mechanism is arranged between the charging box and the extrusion forming machine and comprises a feeding bracket, a guide rail arranged on the feeding bracket, a sliding seat mounted on the guide rail, a power device for driving the sliding seat to move along the guide rail, a loading mechanical arm and an unloading mechanical arm; the extrusion forming mechanism comprises a forming bracket, an upper pressure cylinder, an upper die, a lower die, an extrusion die and a forming pressure cylinder; the upper pressure cylinder is connected with the upper die; the lower die is arranged on the forming bracket; the extrusion die consists of a left die, a right die and guide rails corresponding to the left die and the right die; the left die and the right die are arranged on the two sides of the lower die respectively and are driven by the forming pressure cylinder to slide along the guide rails. The automatic feeding and extrusion forming machine is simple in structure, convenient to control and high in production efficiency.