Patent application number | Description | Published |
20090115655 | Managed traverse system and method to acquire accurate survey data in absence of precise GPS data - A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The system comprises a GPS receiver mounted on a survey pole, with an inertial measurement unit (IMU) and an electronic distance meter (EDM) also mounted on the pole. The system and method obtains GPS data when outside the zone and uses the IMU inside the zone to traverse to a target point, using the EDM to obtain data reduce accumulated errors which occur with the IMU. | 05-07-2009 |
20100141759 | Land survey system - A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The system comprises position measurement components such as a GPS receiver, together with an inertial measurement unit (IMU) and an electronic distance meter (EDM) or an image capture device all mounted on a survey pole. The system and method obtains GPS data when outside the zone and uses the other position measurement systems, such as the IMU, inside the zone to traverse to a target point. The EDM or the image capture device may be used within or without the zone to obtain data to reduce accumulated position errors. | 06-10-2010 |
20110102255 | Land survey system - A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The system comprises position measurement components such as a GPS receiver, together with an inertial measurement unit (IMU) and an electronic distance meter (EDM) or an image capture device all mounted on a survey pole. The system and method obtains GPS data when outside the zone and uses the other position measurement systems, such as the IMU, inside the zone to traverse to a target point. The EDM or the image capture device may be used within or without the zone to obtain data to reduce accumulated position errors. | 05-05-2011 |
20110238303 | Land survey system - A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The system comprises position measurement components such as a GPS receiver, together with an inertial measurement unit (IMU) and an electronic distance meter (EDM) or an image capture device all mounted on a survey pole. The system and method obtains GPS data when outside the zone and uses the other position measurement systems, such as the IMU, inside the zone to traverse to a target point. The EDM or the image capture device may be used within or without the zone to obtain data to reduce accumulated position errors. | 09-29-2011 |
Patent application number | Description | Published |
20080284643 | Post-mission high accuracy position and orientation system - A method of generating post-mission position and orientation data comprises generating position and orientation data representing positions and orientations of a mobile platform, based on global navigation satellite system (GNSS) data and inertial navigation system (INS) data acquired during a data acquisition period by the mobile platform, using a network real-time kinematic (RTK) subsystem to generate correction data associated with the data acquisition period, and correcting the position and orientation data based on the correction data. The RTK subsystem may implement a virtual reference station (VRS) technique to generate the correction data. | 11-20-2008 |
20090024325 | AINS enhanced survey instrument - The invention comprises a survey pole having a survey pole bottom end, with a position-transducer coupled to a survey pole top end. A ground contact spike is on the bottom end. The survey pole uses an AINS as a combined tilt and heading sensor. The AINS provides heading and Euler angle outputs characterizing the tilt of the survey pole. The heading and Euler angle outputs are used by a computer and program to perform position transfers from a position-transducer at the pole top end to the GCZVI switch or spike on the ground using a set of position offset or transfer equations. The position-transducer is either a GNSS or an RTS serving as a position-transducer. The transfer of the position data from the position of the position-transducer provides the earth referenced or grid referenced position of the spike at the survey pole survey bottom end. | 01-22-2009 |
20090093959 | REAL-TIME HIGH ACCURACY POSITION AND ORIENTATION SYSTEM - A real-time high accuracy position and orientation system (RT-HAPOS) system for a vehicle, such as an aircraft, comprises a global navigation satellite system (GNSS) receiver disposed on the vehicle and an integrated inertial navigation (IIN) module disposed on the vehicle. The GNSS receiver generates GNSS position data indicating approximate positions of the vehicle during a data acquisition period in which the vehicle is moving. The IIN module executes a real-time kinematic (RTK) algorithm during the data acquisition period to generate output position data indicating positions of the vehicle at a greater precision than the GNSS position data, based on the GNSS position data, inertial measurement data acquired on the vehicle during the data acquisition period, and a set of virtual reference station (VRS) observables received during the data acquisition period from a remote source external to the vehicle, where the VRS observables are based on the GNSS position data. | 04-09-2009 |
20120163656 | METHOD AND APPARATUS FOR IMAGE-BASED POSITIONING - Method and apparatus are provided for image based positioning comprising capturing a first image with an image capturing device. Wherein said first image includes at least one object. Moving the platform and capturing a second image with the image capturing device. The second image including the at least one object. Capturing in the first image an image of a surface; capturing in the second image a second image of the surface. Processing the plurality of images of the object and the surface using a combined feature based process and surface tracking process to track the location of the surface. Finally, determining the location of the platform by processing the combined feature based process and surface based process. | 06-28-2012 |
20140152493 | QUASI TIGHTLY COUPLED GNSS-INS INTEGRATION PROCESS - A quasi tightly coupled (QTC) aided INS (AINS) process has an inertial navigator system with a loosely-coupled AINS Kalman filter that constructs INS-GNSS position measurements, a GNSS position engine that computes a position fix from observables and an externally provided a priori position and position VCV matrix. An INS position seeding process in which the externally provided a priori position to the GNSS position engine is an antenna position computed from the INS position and attitude solution. An observable subspace constraint (OSC) process computes an OCS matrix that suppress the components of the GNSS position error due to a poor geometry in the GNSS position solution in the IG position measurement constructed by the AINS Kalman filter and that multiplies the OSC matrix and the IG position measurement and measurement model matrix to suppress uncorrected component of the GNSS position error in the IG position measurement and measurement model. | 06-05-2014 |
20140267700 | METHOD AND APPARATUS FOR IMAGE-BASED POSITIONING - Method and apparatus are provided for image based positioning comprising capturing a first image with an image capturing device. Wherein said first image includes at least one object. Moving the platform and capturing a second image with the image capturing device. The second image including the at least one object. Capturing in the first image an image of a surface; capturing in the second image a second image of the surface. Processing the plurality of images of the object and the surface using a combined feature based process and surface tracking process to track the location of the surface. Finally, determining the location of the platform by processing the combined feature based process and surface based process. | 09-18-2014 |
Patent application number | Description | Published |
20110120401 | Adjustable Camshaft Arrangement - A camshaft arrangement for a motor vehicle engine has a hollow outer shaft and an inner shaft supporting inner shaft cams. The inner shaft cams are non-rotatably attached to the inner shaft by at least one connection element that protrudes with clearance through an aperture in the outer shaft and is attached to the respective inner shaft cam which is rotatably mounted on the outer shaft. When inserted into a receiver in the inner shaft, a portion of the connection element protrudes out of the receiver, and the protruding portion is at least partially inserted into an aperture located at the joint diameter of the inner shaft cam. This aperture is open at least towards an end face of the inner shaft cam. The protruding portion has at least two opposite-lying side surfaces lying with an interference fit against corresponding inner surfaces of the aperture of the inner shaft cam. | 05-26-2011 |
20120279467 | Assembled Camshaft, Main Camshaft Body and Method for Producing an Assembled Camshaft - A camshaft that is assembled or is to be assembled carries at least one cam element that is to be disposed on a main camshaft body to be rotationally fixed and axially movable, and at least one cam element to be disposed on the main camshaft body so as to be rotationally fixed and axially immovable. The main camshaft body has first axial sub-sections having a multi-tooth profile, so that due to a positive connection between shaft and hub the cam element to be disposed in the sub-section so as to be axially movable is seated so as to be rotationally fixed. The main camshaft body also has second axial sub-sections having an extended diameter so that by a non-positive connection between shaft and hub it is ensured that the cam element to be disposed in the sub-section is seated so as to be rotationally fixed and secured against movement. | 11-08-2012 |
20140109851 | MOUNTING OF A CAMSHAFT - Reciprocating-piston internal combustion engine having a crank mechanism, with at least one cylinder head, the intake and exhaust ducts of which are controlled by in each case at least one gas exchange valve which is configured as an intake or exhaust valve, which gas exchange valves can be actuated by cams of at least one camshaft and by transmission elements which are driven by said cams, wherein the cams are configured as sliding cams with at least two cams per sliding cam unit, which sliding cams are arranged via internal splining on an externally splined basic shaft such that they are fixed so as to rotate with it but can be displaced axially, at least one device which is fixed to the internal combustion engine for displacing the sliding cam unit into different axial positions via displacement grooves on the circumference of the sliding cam unit which interact with an actuator pin, and bearings for fixing the camshaft radially and axially on a component of the internal combustion engine, wherein the basic shaft is guided by bearings on the component of the internal combustion engine. | 04-24-2014 |
Patent application number | Description | Published |
20110167148 | SYSTEM AND METHOD FOR MERGING MONITORING DATA STREAMS FROM A SERVER AND A CLIENT OF THE SERVER - A method, system, and computer program product for merging monitoring data streams includes: receiving a first monitoring data stream relating to a server containing first records, each first record has a first transaction identifier relating to a first transaction and first monitoring data, relating to a performance of executing the first transaction; receiving a second monitoring data stream relating to a client containing second records, each second record has a list of second transaction identifiers relating to one or more second transactions and second monitoring data, relating to a performance of executing the second transactions; buffering at least parts of the first and the second monitoring data streams; and merging the buffered first and second monitoring data streams by computing an outer-join with a join-condition that the first records have the first transaction identifier that occurs in the list of second transaction identifiers to provide a merged data stream. | 07-07-2011 |
20110302367 | Write Buffer for Improved DRAM Write Access Patterns - The present invention relates to a method and respective system for operating a DRAM main memory. One buffer line is provided for multiple pages. When writing data to the buffer it is decided which to which buffer-line the data is written to based on its destination main memory address. A tuple consisting of lower memory address and data is stored. Data entered into the buffer-line will be sorted by page in case the line is flushed to the main memory. Sorting the buffer entries results in less page openings and closings, since the data is re-arranged by memory address and therefore in logical order. By using one line for multiple pages only a fraction of memory of a common set-associative cache is needed, thus decreasing the amount of overhead significantly. | 12-08-2011 |
20120079098 | Performance Monitoring of a Computer Resource - A method, computer program product, and system for performance monitoring of a computer resource utilized by a user community. The computer resource is monitored, and sets of performance metrics characterizing a state of the computer resource are collected and analyzed to detect performance incidents. External information such as contextual information and user annotations are also collected and analyzed. If a performance incident is detected, its set of performance metrics and associated external information are used to search a data repository of past performance incidents for related incidents, in order to identify critical performance incidents, determine recommended solutions for the performance incidents, and determine performance forecasts for the computer resource. | 03-29-2012 |
20120259980 | Performance Monitoring of a Computer Resource - A method, computer program product, and system for performance monitoring of a computer resource utilized by a user community. The computer resource is monitored, and sets of performance metrics characterizing a state of the computer resource are collected and analyzed to detect performance incidents. External information such as contextual information and user annotations are also collected and analyzed. If a performance incident is detected, its set of performance metrics and associated external information are used to search a data repository of past performance incidents for related incidents, in order to identify critical performance incidents, determine recommended solutions for the performance incidents, and determine performance forecasts for the computer resource. | 10-11-2012 |
Patent application number | Description | Published |
20080252155 | SPRAY COOLED V-WEDGE FOR AEROSPACE GENERATOR - A high speed generator cooling system directs a cooling oil spray through a chamber inside a coil support wedge assembly, which may be disposed adjacent to the generator coils. Heat from the generator coils may be conducted through the walls of the coil support wedge assembly and into the chamber where it is removed by the cooling oil spray passing through the chamber. The cooling oil passes through a generator rotor shaft and into a cooling passage in least one of the rotor laminations. | 10-16-2008 |
20080272671 | HIGH SPEED GENERATOR ROTOR DESIGN INCORPORATING POSITIVELY RESTRAINED BALANCE RINGS - A generator may incorporate a positively restrained balance ring. A generator may include a rotor core including a rotor, and a balance ring. The balance ring may include a weight. The balancer may include a plurality of balance holes in the ring, at least one of the plurality of balance holes to receive a weighted insert. A method of balancing a rotor of a generator may include mounting a balance ring adjacent to a rotor core, and adjusting weights to be located at one or more of a plurality of positions equally spaced around the balance ring to balance the rotor. | 11-06-2008 |
20090056498 | BALL SCREW RESETTABLE MECHANICAL DISCONNECT - A disengagement/disconnect assembly for disengaging a generator from a gear box includes an inner ball screw having an angled threading on an outer surface thereof and surrounding and operatively engaged to a rotating generator drive shaft to cause rotation of the inner ball screw, the inner ball screw having axial dog teeth engaged to corresponding teeth of the gear box drive shaft, an outer ball screw surrounding and normally rotating with the inner ball screw and having a spherical ball and an angled ball track between the inner and outer ball screws, a lock, and a brake for slowing or stopping rotation of the outer ball screw so that the inner ball screw rotates relative to the outer ball screw along the ball track and slides axially toward the lock thereby disengaging the generator from the gear box drive shaft. | 03-05-2009 |
20090184691 | DUAL PURPOSE PERMANENT MAGNET EXCITER - A permanent magnet rotor of a generator is used to excite a permanent magnet stator to generate electric power for the generator and to control a disengagement mechanism whereby the generator can disengage from an accessory, such as a gear box drive shaft, when the generator is not working properly. The permanent magnet is affixed to an outer ball screw which normally rotates with an inner ball screw that is operatively engaged to the accessory. An increased load to the permanent magnet stator slows or stops rotation of the permanent magnet rotor and outer ball screw, causing the inner ball screw to move axially from the outer ball screw and away from an accessory and toward a re-settable lock. | 07-23-2009 |