344 results about "Positioning aids" patented technology

A method and system is described where a plurality of position reference devices use short-range wireless communication protocols to transmit positioning assistance data to nearby mobile devices, and the mobile devices use the assistance data to model errors and re-calibrate their positioning systems. The short-range communication methods include NFC, RFID, Bluetooth®, short-range 802.11, Wi-Fi Direct, and high frequency focused beams such as 60 GHz. The position reference devices are passive or active NFC tags, passive or active RFID tags, other devices that include such tags as their components, Bluetooth®-enabled devices, 60 GHz-enabled devices, and 802.11 access points that can lower their transmit power. The reference devices are located at various indoor and outdoor locations such as smart posters, kiosks, ATM machines, malls, store checkout counters, store security gates, wireless access points, cellular base-stations, tollbooths, traffic lights, and street lamp posts.

A method and system is described where a plurality of position reference devices use short-range wireless communication protocols to transmit positioning assistance data to nearby mobile devices, and the mobile devices use the assistance data to re-calibrate their positioning systems. In some embodiments, mobile device includes an accelerometer and the accelerometer measurements are used to calculate an updated velocity of the mobile device and an updated position of the mobile device based on the accelerometer measurements and previous velocity and position of the mobile device. The short-range communication methods include NFC, RFID, Bluetooth®, short-range 802.11, Wi-Fi Direct, and high frequency focused beams such as 60 GHz. The position reference devices are passive or active NFC tags, passive or active RFID tags, other devices that include such tags as their components, Bluetooth®-enabled devices, 60 GHz-enabled devices, and 802.11 access points that can lower their transmit power.

A removable stent for placement within a lumen is provided. The stent includes a scaffolding of struts configured to define a substantially cylindrical member having a proximal end and a distal end. The stent also includes at least one flexible element spirally wound along at least a portion of a respective strut, wherein the element comprises at least one engageable member such that a force applied to the engageable member does not result in purse-stringing.

Systems for distracting a facet joint and positioning a permanent implant in the joint are disclosed. The implants serve to retain a distracted position of the facet joint which is achieved with positioning of the leading end of a distraction tool in the facet joint and then distracting or enlarging the joint a desired amount. The permanent implant could be part of the distraction mechanism which can be separated from the delivery tool once the joint has been distracted or an auxiliary implant may be positioned before the distraction mechanism is removed from the distracted joint. The permanent implants can be solid, mechanical devices that may have fixation means thereon to hold them in place or injected fluids such as hydrogels or fluids confined within balloons.

The present invention relates to a novel constructional principle for electric heaters, wherein the functions of frame and resilient means are separated from one another. As a frame for an electric heater, a housing is used that consists of two half-shells. Positioning aids for the PTC heating elements are arranged in the housing. The longitudinal sides of the housing are essentially made open to allow for air throughput through the heating register. A resilient device is additionally inserted into the housing, the resilient device compressing the layered structure of radiator elements, PTC heating elements and contact sheets. After the heater has been assembled, the resilient device can be inserted through a lateral opening into the heater.

A computer-aided positioning and navigation system for dental implant includes a computer system having built therein a dental implant planning software and providing a 3D digital human tissues model to create an implant navigation information, a positioning assistive device including a body providing a positioning portion and a guide portion and a connection member carrying an optical positioning device, one or multiple optical capture devices, and a display device electrically connected to the computer system. The computer system controls the optical capture device to capture images and drives the display device to display a part of the content of the 3D digital human tissues model and the implant navigation information.

The invention discloses a method and system for precisely positioning a mine. The method for precisely positioning the mine comprises the steps that a plurality of positioning base stations and a plurality of marking cards which are used for positioning and are communicated with the positioning base stations through the wireless technology are arranged; distance data are calculated by measuring time spent by signals sent by the positioning base stations flying to the marking cards or the distance data are measured by measuring the time spent by signals sent by the marking cards flying to the positioning base stations; directed wireless antennas are arranged in roadway directions according to the roadway position of the positioning base stations under a coal mine well, the direction information of the positioning cards relative to the positioning base stations is calculated by obtaining antenna information used for communication between the positioning base stations and the positioning cards, and therefore the precise positions of the marking cards are obtained, and precise positioning is achieved. The method for precisely positioning the mine can be implemented under the condition that positioning auxiliary base stations are not required to be deployed, cost is reduced, engineering installation and deployment difficulty are greatly simplified, and time synchronization of the positioning base stations and the marking cards is not needed.

A method for determining the position of a vehicle, preferably of a portal stacking truck in relation to a container crane, in which a sensor serves for determining the position of the stacking truck, and evaluating devices are coupled to a detection device, and in which the posts of a container crane are detected as positioning aids in terms of angle and distance by means of a scanner mounted on the stacking truck and transmitted to an evaluating computer, which compares the signals with signals provided in its program and determines the exact position of the stacking truck in relation to the posts of the container, and drives the stacking truck from this position into an exactly predetermined position in relation to the posts of the container.

The invention belongs to the technical field of application such as wireless communication and unmanned aerial vehicle wireless precise positioning and provides an unmanned aerial vehicle near field guiding system. The system comprises a ground system and an onboard positioning system. The ground system comprises an unmanned aerial vehicle near field sensing system and a positioning base station which are connected in sequence. The onboard positioning system comprises an airport sensing system, an onboard UWB positioning system and a position computing system which are connected in sequence. The positioning base station is connected with power supply modules. The positioning base station and the onboard UWB positioning system are in wireless connection. The unmanned aerial vehicle near field sensing system and the airport sensing system are in wireless connection. The positioning base station and a positioning auxiliary communication system are connected. The invention also provides anunmanned aerial vehicle near field guiding method. The system and the method are clever in concept and simple and convenient for operation, and the technical problem that in the prior art, the precise positioning is greatly influenced by an environment and the technical cost is high is solved.

The invention provides a multi-site positioning method and device, relates to the technical field of communication, and is used for solving the problem of insufficient positioning precision caused byRTT measurement in a positioning architecture taking a positioning management function as a center. According to the method, the above problem is solved, RTT positioning is carried out through cooperation of multiple base stations, and the positioning precision is improved. The method comprises the following steps: target equipment receives positioning auxiliary information sent by a positioning center, wherein the positioning auxiliary information comprises cell identifiers and reference signal configurations of a service base station and at least one neighbor base station; the target equipment performs positioning measurement on the downlink reference signal according to the positioning auxiliary information; the target equipment sends an uplink reference to the serving base station andthe at least one neighbor base station according to the positioning auxiliary information; and the target equipment sends a downlink positioning measurement report to the positioning center, wherein the downlink positioning measurement report comprises the receiving and sending time difference of the reference signals corresponding to the service base station and the at least one neighbor base station measured by the target equipment.

The present invention relates to a single board fault location auxiliary device and its location method. Said invention is mainly characterized by that on the single board a removable special-purpose nonvolatile storage chip is added, said chip can be matched with test function on said single board, the running state information (including fault information) of said single board can be stored in the nonvolatile storage chip so as to prevent the information from losing due to causes of powerfail, etc. Said invention is applicable to on-line, off-line and remote fault location.

The invention provides a RTK (real time kinematic)-based piling positioning auxiliary system and a utilization method thereof. The system comprises a RTK-based reference station, a mobile station, a data processing system, an application service system, a mobile terminal, a data switcher and a pile driver. The reference station, the mobile station and the mobile terminal are connected with the data processing system and the application service system through the data switcher. The reference station is arranged at a relatively fixed known coordinate point of a target project, the mobile terminal is provided with the application service system, the mobile station and the mobile terminal are arranged on the pile driver, and the mobile station can be also arranged at an independent point outside the pile driver. An operator of the pile driver can complete pile driver positioning (piling position determination) according to display or prompt of the application service system installed on the mobile terminal, and accordingly intermediate links in a positioning process can be reduced, and directness, convenience and accuracy in operation of piling position determination are improved. Furthermore, construction efficiency of the pile driver is improved, the problems of pay-off difficulty in night construction and the like are solved, and the RTK-based piling positioning auxiliary system has the advantages of simplicity in operation, accuracy in positioning, monitorability in construction and sharability of construction data and achievements.

An exemplary nozzle ring has two fastening rings and a plurality of guide vanes, wherein holes are provided in one of the fastening rings for accommodating pins of the guide vanes, and openings are provided in the other fastening ring for accommodating positioning aids on the guide vanes.

The embodiment of the invention discloses a positioning method and device, which are used for reducing the number of sending stations so as to reduce the calculation complexity of positioning. The method provided by the embodiment of the invention comprises the following steps: a terminal receives positioning auxiliary information sent by a positioning entity, wherein the positioning auxiliary information comprises a cell identifier of a cell where a to-be-measured sending station is located, an identity identifier of the to-be-measured sending station and positioning reference signal configuration information of the to-be-measured sending station; the terminal measures the to-be-measured sending station according to the positioning auxiliary information to obtain a measurement result, andthe measurement result comprises measured positioning reference signal information of the to-be-measured sending station; and the terminal sends the measurement result.

A solution for the individual automatic rough positioning of ophthalmological equipment with respect to a to ensure the diagnostic or therapeutic treatment of the patient. The assembly includes a positioning aid and a control unit for the automatic alignment of the axis of vision of the eye with the optical axis of the ophthalmological equipment. The positioning aid includes a chin rest and a forehead support which have corresponding controllable actuating devices. The assembly has an additional measuring device for recording the geometry of the face of the patient.

The invention discloses a steel coil uncoiling automatic locating auxiliary threading system and method. According to the threading system, a position sensor is arranged on a piston rod of a swing guide plate hydraulic cylinder, and the swing guide plate hydraulic cylinder achieves stepless speed regulation through a proportion valve; and a photoelectric proximity switch is mounted at the front end of a telescopic guide plate. The threading method comprises the steps that after an inlet steel coil vehicle completes coil feeding successfully, an uncoiling machine is used for carrying out uncoiling threading; an uncoiling machine guide plate automatic locating subsystem calculates a swing guide plate swing target position coordinate, a piston rod stretching position and a telescopic guide plate stretching point target position coordinate according to a calculation model; the swing guide plate hydraulic cylinder carries out position locating; and after the telescopic guide plate stretchesin place, an uncoiling machine motor conveys out a belt head at crawling speed. According to the steel coil uncoiling automatic locating auxiliary threading system and method, by means of the uncoiling machine telescopic guide plate, a swing guide plate, a position sensor and the proximity switch, an uncoiling machine auxiliary guide plate threading mathematic model is established in a control system, and steel coil uncoiling automatic locating auxiliary threading is achieved.