431results about How to "Avoid Positioning Effects" patented technology

The invention discloses a heat forming method for an aluminum alloy sheet metal part after solid solution and water quenching, relates to a heat forming method for a heat-treatable strengthening aluminum alloy sheet metal part and aims at solving the technical problems that existing heat-treatable strengthening aluminum alloy is large in shape and size change in the process of heat treatment after the heat-treatable strengthening aluminum alloy is formed first, heat melting forming and cold mold quenching technique requires transfer locating and forming to be fast, in an aluminum alloy sheet metal part cold-hot compound mold forming method, control on temperature of an aluminum alloy slab is difficult, in-mold cooling and quenching speed after forming is slow and not beneficial for obtaining a supersaturated solid solution, requirements for forming equipment are high, and the like. The forming method includes the flowing steps: carrying out the solid solution and the water quenching to the aluminum alloy slab, then, placing the aluminum alloy slab in a hot-state mold to carry out secondary heating, and carrying out aging treatment after pressing forming. According to the heat forming method for the aluminum alloy sheet metal part after the solid solution and the water quenching, the requirements for the forming equipment are not high, precision of shape and size of the aluminum alloy sheet metal part is high, strength is greatly improved, and the heat forming method for the aluminum alloy sheet metal part after the solid solution and the water quenching is suitable for the heat-treatable strengthening aluminum alloy such as 2000 series aluminum alloy, 6000 series aluminum alloy and 7000 series aluminum alloy.

The invention discloses a scenic spot self-help tour system and a scenic spot self-help tour method based on a mobile Internet. The system comprises a scenic spot identification system, a user terminal, a scenic spot data service system, and an intelligent navigator. A PC terminal and a notebook access the scenic spot data service system via the Internet. A smart phone or a tablet computer terminal identifies a two-dimension identification code, a proximity identification device or a digital identification code of the scenic spot identification system, and accesses video and audio explanation information in the scenic spot data service system via a wireless network. The smart phone or the tablet computer terminal is further connected with the intelligent navigator through a data line interface, and looks up navigation information of a scenic spot in the intelligent navigator. According to the invention, accurate location information of a scenic spot is judged by using the smart phone or the tablet computer terminal to scan the two-dimension identification code, sense a proximity identification device signal or input the digital identification code, and the video and audio explanation information of the scenic spot is acquired by accessing the scenic spot data service system or directly accessing a rented intelligent navigator, thus realizing self-help tour guide.

The invention discloses a wireless sensor network node device used in an underground coal mine, which belongs to a hardware platform for personnel positioning and environmental monitoring based on a wireless sensor network in the underground coal mine. The wireless sensor network node device used in the underground coal mine is provided with wireless sensor fixed nodes (1) and wireless sensor mobile nodes (2); the sensor fixed nodes (1) are placed on a tunnel wall from space to space in the underground coal mine; and the sensor mobile nodes (2) are worn by mining personnel. The device has the following advantages: 1) the device has high positioning accuracy, and the mobile nodes carried by the personnel transmit wireless signals to communicate the approaching fixed nodes so as to determine the position of the device and improve the positioning precision; 2) both the wireless sensor fixed nodes and the wireless sensor mobile nodes have the capacity of bidirectional communication so as to accurately position the position of the personnel; 3) the design cost of the wireless sensor nodes is comparatively low, large amount of nodes can be arranged, and drain regions and blind points of positioning and monitoring are avoided; and 4) the arranged wireless sensor fixed nodes do not need wire connection, so the cost is low.

The invention discloses an electromagnetic induction device and a touch positioning method thereof, belonging to the field of electromagnetic handwritten input. The touch positioning method provided by the invention comprises the following steps of: simultaneously gating at least two groups of transmitter coils and receiving coils for scanning, detecting and recording an electromagnetic pen signal; primarily positioning an electromagnetic pen according to the maximum value of the detected electromagnetic pen signal and a coil combination corresponding to the maximum value after all boundary transmitter coils and boundary receiving coils in an antenna plate zone are scanned; and accurately positioning the electromagnetic pen according to the coil combination corresponding to the maximum value of the electromagnetic pen signal if the maximum value of the electromagnetic pen signal is smaller than a preset initial positioning threshold value, or else processing the combination of the receiving coils and the transmitter coils corresponding to the maximum value of the electromagnetic pen signal to confirm the position of the electromagnetic pen. The method provided by the invention can be adopted to rapidly realize the accurate positioning of the electromagnetic pen and can effectively avoid the problems of contact loss, delayed positioning, and the like when the electromagnetic pen rapidly moves.

The embodiment of the invention discloses an image-based relocation method and device, a terminal and a medium, wherein the method comprises the following steps: obtaining a current frame image and areference frame image from an image set; Extracting first feature information from the current frame image and extracting second feature information from the reference frame image, and obtaining a matching relationship between the first feature information and the second feature information; Determining a position parameter of the current frame image according to the matching relationship, the position parameter comprising a rotation parameter and a displacement parameter; Adjusting a position parameter of the current frame image according to a three-dimensional spatial position correspondingto the reference frame image and the matching relationship; determining The three-dimensional spatial position of the terminal according to the adjusted position parameters. The embodiment of the invention can improve the success rate of repositioning and the accuracy of the repositioning result.

The invention discloses an indoor AGV navigation method and system based on QR code guidance and visible light positioning. A QR code label is attached to the node of an AGV moving path, so that whenthe AGV moves to the position near the node, a QR code image captured by a high-speed camera can be analyzed to obtain the moving direction of the next step. The AGV can be positioned in real time through the RSS positioning method based on the visible light communication technology when the AGV moves between two nodes, and deviation can be prevented. The visible light communication positioning isadded when QR code recognition technology is used for navigation. The problem that the AGV is deviated from the direction due to lack of positioning information between QR codes which are too long indistance when only QR code navigation is used is avoided. An indoor AGV navigation positioning method which is low in cost is provided.

The present invention discloses a glass cutting method, a two-dimensional code is set on a glass substrate before glass cutting, two-dimensional code information is read before the glass cutting, and inputted into a control system, the control system interprets the two-dimensional code information and generates a cutting path according to interpretation information, and a cutting device cuts the glass substrate according to the cutting path. According to the method, different sizes and different shapes of glass to be cut can be optimized and arranged, the utilization rate of the glass substrate can be improved, the workload of manual input of parameters can be reduced, the relative position of the two-dimensional code on the cut glass is more precision, production efficiency of the glass subsequent processing can be improved, mixed production of different specifications of glass can be achieved, positional deviation increase, large glass size scattering difference and other defects caused by a plurality of times of repeated positioning can be avoided, and flexible secondary processing of the glass can be facilitated. The present invention also discloses the glass cutting device for cutting the glass substrate by use of the method.

The invention discloses a three-dimensional positioning and guiding device for penetrating a vertebral pedicle through skin. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin comprises a base, dip angle measuring devices and a measuring device supporting rod, wherein guiding grooves are arranged in length wise frame edges of the base, two dip angle measuring devices are matched on the measuring device supporting rod in a sliding mode, and an arc-shaped guiding groove is arranged in each dip angle measuring device. A bar-shaped hole is arranged in the measuring device supporting rod, a puncture needle guiding tube is in hinge joint with the dip angle measuring devices, and the puncture needle guiding tube penetrates through the bar-shaped hole. A guiding pin is arranged on the puncture needle guiding tube and is matched with the arc-shaped guiding grooves, marking needle fixing holes are arranged in the middle portion of the measuring device supporting rod, and two ends of the measuring device supporting rod are cylindrical segments. The measuring device supporting rod is matched with the guiding grooves in a sliding mode through sliding blocks, the cylindrical segments of the measuring device supporting rod extend out of the sliding blocks and are connected with a positioning rod, and the positioning rod is in the same plane with the measuring device supporting rod and the puncture needle guiding tube. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin is capable of three-dimensional positioning and guiding and shortening the operation time, high in efficiency, accurate in guiding and capable of improving the achievement ratio of operation.

The present invention provides a fault detection method for an optical distribution network, a fault detection device for an optical distribution network and a passive optical network system. The method includes the following steps that: the uplink/downlink optical path attenuation of a plurality of optical network units (ONU) to which optical line terminals (OLT) belong is acquired; whether the optical path attenuation of the plurality of ONUs is qualified is judged according to a preset threshold; the PON ports of a passive optical network are traversed, so that whether ONUs with valid optical path attenuation exist under the PON ports of the passive optical network can be judged, wherein the ONUs adopt the PON ports as units; and if the ONUs with valid optical path attenuation exist under the PON ports, the number of light splitting stages of optical paths under the PON ports corresponding to the valid ONUs is determined, and the fault of the optical distribution network (ODN) underdifferent light splitting stages are also determined. With the method of the invention adopted, the technical problem of low efficiency in determining the faults of the ODN in the prior art is solved.

The invention discloses a coal mine fully mechanized mining face advancing degree detection system and method. The coal mine fully mechanized mining face advancing degree detection system is composedof positioning anchor points, positioning tags, positioning controllers, a master control system and the like. The positioning anchor points are fixedly installed on the rock walls of an air intake roadway and an air return roadway at equal distances, the positioning tags and the positioning controllers are deployed on a hydraulic support, a coal mining machine and the like, the distances betweenevery two positioning nodes are measured, distance measurement data are transmitted to a main control computer by the positioning controllers through communication network, the positions of the equipment in the mining face advancing process are worked out by the main control computer according to the data, and therefore automatic detection can be achieved in the mining face advancing process.

The invention discloses a personalized minimally-invasive knee joint positioning guide plate used for knee arthroplasty and manufactured on the basis of medical image three-dimensional reconstruction and computer-aided design technologies, 3D (three-dimensional) printing or other machining methods, and particularly relates to accurate determination of a positioning joint surface. Firstly, a patient skeleton model is reconstructed on the basis of a two-dimensional medical image; preoperative planning is performed on the reconstructed model, and important parameters such as a lower extremity force line, a femoral rotation axis and an osteotomy reference point are determined to simulate osteotomy and prosthesis implantation; a positioning sheet (single positioning type and composite type) is determined and designed with the results. The positioning sheet is used for positioning with a local positioning principle by means of local area jointing, so that over-positioning and positioning instability are avoided; meanwhile, the wound area is reduced to the maximum extent. A dissection point is positioned through the reconstructed model, so that the lower extremity force line can be reconstructed accurately, and accurate osteotomy is realized.

The invention discloses a thin film thickness measurement method and system. The thin film thickness measurement system comprises a lighting optical device, an imaging optical device and a thin film thickness analyzing device, and is characterized in that the lighting optical device is used for generating a cone-shaped beam and projecting the cone-shaped beam to a point on the thin film surface of a sample; the imaging optical device comprises a focusing lens and an image acquisition module; the focusing lens projects light reflected from the surface of the sample to the image acquisition module according to the sequence of an incidence angle from small to large, the image acquisition module detects to acquire reflection intensity information of the beam at the surface of the sample and builds a relation curve between the reflectivity and the incidence angle according to the reflection intensity information; and the thin film thickness analyzing device builds a function of the reflectivity and a refraction angle cosine value by utilizing the relation curve between the reflectivity and the incidence angle and a Snell's law, and acquires the thin film thickness of the sample through performing Fourier transform and analysis on the function. The thin film thickness measurement system is not only high in measurement accuracy, but also simple, compact and stable in light path, low in cost and easy to realize online measurement.

The invention belongs to the technical field of detection equipment and discloses automatic cutter detection equipment which comprises a control center, a base, a feed plate, a chuck seat, a detection mechanism and a grabbing mechanism. The feed plate is arranged on the base, the chuck seat is rotatable and used for clamping a to-be-detected cutter, the detection mechanism is used for detecting the to-be-detected cutter, and the grabbing mechanism is capable of grabbing a cutter in the feed plate and arranged above the base. The chuck seat is arranged between the detection mechanism and the feed plate, and the control center controls operations of the feed plate, the chuck seat, the grabbing mechanism and the detection mechanism. The grabbing mechanism is capable of grabbing the to-be-detected cutter in the feed plate to place the cutter in the rotatable chuck seat under control of the control center, the detection mechanism detects the to-be-detected cutter and is capable of moving vertically and longitudinally, and the grabbing mechanism can further place the detected cutter on the feed plate. The whole operation process is automatic, and accordingly cutter detection efficiency is greatly improved, and accuracy in positioning and detection of cutters are achieved.

The invention provides a method for passively positioning a point sound source based on a spatial ten-element array and belongs to the technical field of sensing and test. The method for passively positioning the point sound source comprises the following steps: calculating a corresponding arrival time difference through all the nodes of a central base array of the spatial ten-element array, and then utilizing the arrival time difference to calculate the pitch angle and the azimuth angle of the point sound source; calculating a corresponding arrival time difference through all the nodes of a peripheral base array of the spatial ten-element array, and then utilizing the arrival time difference to calculate the sonic path distance information of the point sound source; finally calculating the coordinates of the point sound source according to the obtained pitch angle, the azimuth angle and the sonic path distance information. The method for passively positioning the point sound source prevents the condition that the sound source cannot be positioned or a positioning error suddenly changes due to a special sound source position and has the advantages of high precision and strong practicability.

The invention relates to a cylindrical battery shell, comprising a cylinder, an upper cover plate and a lower cover plate, and is characterized in that the head of the cylinder is open and an open supporting table is arranged at the bottom of the cylinder, the lower cover plate is covered on the open mouth of the supporting table, and further more, the open mouth is a step-shaped mouth or a conical mouth, the invention further relates to a cylindrical battery made by the shell. Applying the technic proposal, the invention provides a cylindrical battery shell and a cylindrical battery which is convenient for equipping and locating battery unit, and prevents the battery unit from skipping in the shell.

The invention provides a sitting type automatic lumbar fixed-point spinning reduction machine for treating soft tissue injuries and spinal diseases. The reduction machine comprises a chair, a crotch fixer, leg holddown units, a back fixer, a movable rod, a chest-rest board, a shifting mechanism, a forward bending mechanism, a sideward swaying mechanism, a spinning mechanism and a related electric control system. The shifting mechanism, the forward bending mechanism and the sideward swaying mechanism are driven by electrohydraulic rod type pushers, control is steady, the speed is moderate, the spinning mechanism is controlled by a servo system cooperating with a corresponding transmission mechanism, so that the needed speed and angle of spinning are accurate, and the back fixer is provided with artificial hand models, which are provided with buffer units and an automatic follow-up or withdrawal positioning function. The closed-loop control system comprising related sensors and a programmable controller is communicated with a computer via the RS232 serial communication technology, and cooperates with a computer user interface, and thereby the reduction machine has the advantages of simple operation, high automation degree, accurate control and remarkable efficacy.

A scattered-radiation collimator is disclosed for radiological radiation with a multiplicity of absorber elements that are arranged one behind the other in a collimation direction and held in a support frame. In at least one embodiment, the support frame includes a holding device for holding the absorber elements on opposite sides across the collimation direction, and at least one strip-like holding element spans the absorber elements in a collimation direction on the radiation entry side and/or the radiation exit side of the scattered-radiation collimator and additionally fixes the absorber elements on the longitudinal edges thereof in a mechanical fashion. In at least one embodiment, the holding elements prevent deformations of long absorber elements caused by centrifugal forces to a large extent. This affords the possibility of implementing scattered-radiation collimators with a large Z-coverage that meet the demand on the absorber elements in respect of dimensional stability and positional accuracy. Moreover, at least one embodiment of the invention relates to a method for producing such a scattered-radiation collimator.