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514results about How to "precise positioning" patented technology

Intelligent file cabinet, file management system and file positioning method

The invention discloses an intelligent file cabinet, a file management system and a file positioning method. The intelligent file cabinet comprises a cabinet body, an article storing unit, an RFID read-write module, a position indicating module, electronic tags and a main control system. The main control system is respectively connected with the RFID read-write module and the position indicating module; the article storing unit comprises a tray and at least two partition boards fixed to the tray; the RFID read-write module comprises a reader-writer, a multiplexer, a power divider and at least two antennas, the antennas are fixed to the tray and tightly attached to the partition boards, the reader-writer is connected with the main control system and meanwhile is connected with the multiplexer, the multiplexer is connected with the power divider, and the power divider is connected with the antennas. According to the intelligent file cabinet, the file management system and the file positioning method, files can be guided to be put into the cabinet and to leave the cabinet, file boxes and / or files are accurately positioned, the situation that the file boxes are dislocated can be prompted, the position state is prompted, and the intelligent file cabinet, the file management system and the file positioning method have the advantages of being high in safety, accurate in positioning, capable of achieving quick checking in real time and the like.
Owner:BEIJING KEDONG ELECTRIC POWER CONTROL SYST

Tracing and analyzing method for urban air pollutants

ActiveCN107917987Aprecise positioning
The invention provides a tracing and analyzing method for urban air pollutants. The tracing and analyzing method comprises the following steps: collecting monitoring data of various pollutant concentrations in the air by monitoring points arranged in a city; calculating a daily prevailing wind direction and major pollution time periods by combining the monitoring data, and air quality indexes of acceptor points and neighboring country stations; selecting mini-type stations in an upwind wind direction and adjacent four wind direction regions according to the daily prevailing wind direction andthe major pollution time periods; carrying out time correction on the selected mini-type stations; combining the mini-type stations subjected to the time correction and data of the acceptor points tocalculate sequencing indexes; selecting the mini-type stations with the front k sequencing indexes and carrying out empathized analysis; calculating a concentration contribution rate from a mini-typestation periphery pollution source to the corresponding mini-type station and returning back front N pollution sources with the highest concentration contribution rate. According to the tracing and analyzing method provided by the invention, the contribution rate of the pollution source to the mini-type station can be directly displayed and pollution degrees of the different pollution sources aredisplayed, so that accurate positioning of the pollution sources is realized.
Owner:BEIJING VIREADY TECH CO LTD +1

Automatic positioning and screwing mechanism of main and auxiliary seat frames and control method thereof

ActiveCN103586679Aprecise positioningFacilitate automated control and management
The invention discloses an automatic positioning and screwing mechanism of main and auxiliary seat frames and a control method of the automatic positioning and screwing mechanism. The automatic positioning and screwing mechanism comprises a base, wherein the base is horizontally provided with a first guide rail and two front-back propelling mechanisms in the forward and backward direction, the first guide rail is provided with a main supporting base and an auxiliary supporting base, the two front-back propelling mechanisms can propel the main supporting base and the auxiliary supporting base to move on the first guide rail respectively, the main supporting base is provided with a second guide rail and a first left-right propelling mechanism, the second guide rail is provided with a main installation base, the auxiliary supporting base is provided with a third guide rail and a second left-right propelling mechanism, the third guide rail is provided with an auxiliary installation base, the auxiliary installation base is provided with a rotary mechanism, the second left-right propelling mechanism can propel the auxiliary installation base to move left and right on the third guide rail, and the main installation base and the auxiliary installation base are respectively provided with a CCD visual positioning device and a screwing device. The automatic positioning and screwing mechanism of main and auxiliary seat frames and the control method of the automatic positioning and screwing mechanism can achieve assembly and screwing of seat basins and seat frames of a main seat and an auxiliary seat, bring convenience to automatic control and management, and improve production efficiency.
Owner:CHONGQING YANFENG ADIENT AUTOMOTIVE COMPONENTS CO LTD

Laser welding clamp and protecting device for titanium alloy thin-walled workpiece in shape of complex space

The invention relates to a laser welding clamp and a protecting device for a titanium alloy thin-walled workpiece in a shape of a complex space. The laser welding clamp and the protecting device comprise a clamp, a gas protecting device and a lower supporting base. The clamp is a back contact pattern. The outer surface of the back contact pattern is matched with the inner surface of a welding piece. A first workpiece to be welded and a second workpiece to be welded are fixed on the clamp through a plurality of pressing plates. A seam to be welded between the first workpiece to be welded and the second workpiece to be welded is right opposite to a vent groove on the back contact pattern. The gas protecting device comprises a protecting lateral plate, a flexible copper cover and a lower sealing plate. The protecting lateral plate, the flexible copper cover and the lower sealing plate form a sealed cavity on the periphery of a welded workpiece. A back vent pipe is arranged in the vent groove, and a front vent pipe is arranged between the flexible copper cover and the welded piece. The flexible copper cover can move along a preset track under the driving of a laser head, and sealing protection of a whole welding process can be achieved. The laser welding clamp and the protecting device solves the problem of being long in a machining period of the clamp through numerical control machining, high in cost and hard in achieving of gas protection of the welding seam of a complex track.
Owner:XI AN JIAOTONG UNIV +1

Automation device capable of implanting radioactive particles continuously

The invention discloses an automation device capable of implanting radioactive particles continuously. A linear module, a sliding block and a ball screw are connected into a whole. A motor is fixed to the top end of the linear module and connected with the ball screw, a middle adapting piece and the sliding block are fixed, a supporting plate is fixed to the back of the linear module, a quick locking nut is fixed to the top end of the supporting plate, a needle core holding frame is connected with the middle adapting piece together, a needle core is fixed in a clamping groove in the needle core holing frame, a detachable clip supporting frame is fixed to the bottom of the supporting plate, a detachable clip is fixed in the detachable clip supporting frame, a needle core guide pipe is located at the top of the right end of the detachable clip and communicated with a particle channel, the particles are arranged in a particle bin and compressed by a spring connected with a particle compression shaft, a clip cover and the detachable clip are connected together, and a needle sheath positioning piece is fixed to the bottom of the detachable clip. The automation device can achieve fully-automatic implantation of the radioactive particles, is easy to operate and suitable for being connected with puncture needles provided by different manufacturers as well.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Automatic crimping structure of FOG liquid crystal screen

The invention discloses an automatic crimping structure of a FOG liquid crystal screen. The automatic crimping structure comprises a base plate, a carrying tool, and a crimping device, the surface of the carrying tool is provided with a groove for containing and limiting a to-be-detected liquid crystal screen and a guiding groove for guiding and limiting a FPC of the to-be-detected liquid crystal screen, the crimping device comprises a clamping portion, a driving portion, and a signal transmission portion, the clamping portion comprises a clamping fixed part fixedly connected with the carrying tool and a clamping movable part movably connected with the clamping fixed part, the signal transmission portion comprises a signal switching probe and a signal line, the guiding groove guides the FPC of the to-be-detected liquid crystal screen to the clamping portion, the driving portion drives the clamping movable part to clamp or loosen a connector of the to-be-detected liquid crystal screen, the signal switching probe is arranged on the clamping movable part and can be connected with the connector of the to-be-detected liquid crystal screen, one end of the signal line is connected with the signal switching probe, and the other end of the signal line is electrically connected with a control terminal. According to the automatic crimping structure, automatic control is realized, the positioning is accurate, the precision is high, the liquid crystal screen can be lit at each connection, and the test efficiency and the screen-lighting success rate can be greatly increased.
Owner:武汉精毅通电子技术有限公司 +1

Underwater positioning method based on single acoustic beacon distance measurement

ActiveCN108614258ASimple physical structureprecise positioning
The invention discloses an underwater positioning method based on single acoustic beacon distance measurement; the method comprises the following steps: an underwater vehicle carries out slope distance measurement with an acoustic beacon in a fixed position via an underwater acoustic communication set at a fixed frequency, the acoustic beacon sends self depth to the vehicle, the vehicle combines the acoustic beacon and self real time depth so as to calculate the depth difference and horizontal distance between the vehicle and the acoustic beacon; secondarily, in a navigation process, the vehicle uses a compass and a Doppler tachymeter to obtain self accuracy course and speed, thus obtaining the accurate navigation locus of the vehicle in certain period; finally, the vehicle uses the rangefinding sequence and the curse as constraints, uses the acoustic beacon position as reference, and matches and positions a real time relative navigation locus in an acoustic beacon coverage area, thusdetermining the present position. An existing underwater acoustic positioning method has more elements, is complex in structure, high in cost, and a curse reckoning method has accumulated errors andneeds the start point position information in calculation; the underwater positioning method based on single acoustic beacon distance measurement can solve said problems.
Owner:TIANJIN UNIV

Shrinkage fit and positioning tool for stator core and casing

PendingCN108723699Aprecise positioningImprove concentricity
The invention provides a shrinkage fit and positioning tool for a stator core and a casing, belonging to the technical field of machinery. Therefore, a conventional shrinkage fit and positioning toolcan reliably position. The shrinkage fit and positioning tool for the stator core and the casing comprises an upper base, a lower base and at least two columns. A support panel is slidably connected onto the columns. An elevating driving source is arranged on the upper base. A downward installing seat is arranged on the support panel. The bottom of the installing seat is equipped with a positioning boss allowing the casing to sleeve. The center of the installing seat is provided with a perforating hole. The positioning boss is equipped with at least three sliding channels extending in a radialdirection to communicate with the perforating hole in circumferential direction. Each sliding channel is slidably connected with an internally-supporting sliding block. A telescopic guide rod is arranged in the perforating hole in a penetrating manner. The top of the installing seat is provided with a telescopic driving source. The installing seat is further equipped with a limiting structure. The lower base is fixed with a positioning seat which is coaxial to the installing seat. A positioning structure capable of positioning the stator core is arranged on the positioning seat. The shrinkagefit and positioning tool has better circumferential positioning accuracy and stability.
Owner:WENLING JIUZHOU ELECTROMECHANICAL

Aortic valve device conveyed by catheter

InactiveCN105496607Areduce paravalvular leakprecise positioning
The invention provides an aortic valve device conveyed by a catheter. The aortic valve device comprises a main support, wave leaflets and a skirt. The valve leaflets are fixed to the inner side of the middle of the main support. The skirt is fixed along the periphery of the inner side of the main support and fixed to the valve leaflets. An upper horn mouth structure in a three-valve form is formed by the upper end of the main support. Three circular connection jaws used for loads of the main support are arranged at the tail end of the horn mouth structure. A lower horn mouth structure used for reducing outward expanding of perivalvular leakage is arranged at the bottom end of the main support. Three lower end circular connection jaws are arranged at the lower end of the lower horn mouth structure. The aortic valve device further comprises a positioning ring located on the lower side of the main support and used for conducting positioning. The positioning ring comprises three V-shaped or U-shaped arc sections. The ends of the V-shaped or U-shaped arc sections are connected to form an annular shape. Three positioning circular connection jaws are formed at the ends. The lower end circular connection jaws are connected with the corresponding positioning circular connection jaws through flexible positioning lines respectively.
Owner:BEIJING MED ZENITH MEDICAL SCI CORP LTD
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