Livermore, CA, United States

Topcon Positioning Systems

www.topconpositioning.com
Livermore, CA, United States
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Patent
Topcon Positioning Systems | Date: 2017-02-08

Disclosed is a method for mapping network identifiers to a set of sensor modules that measure a three-dimensional action vector and that are sensitive to orientation in three-dimensional space. Each sensor module is mounted at a different position on a machine such that the orientation of each sensor module is different. The method includes one or two stages. In the first stage, the machine is placed in a stationary state, and measurements of a static action vector from a sensor module identified by a network identifier are correlated with expected measurements from a sensor module having a corresponding orientation and corresponding position. In the second stage, the machine is placed in a dynamic state, and measurements of a dynamic action vector from a sensor module identified by a network identifier are correlated with expected measurements from a sensor module having a corresponding orientation and corresponding position.


Patent
Topcon Positioning Systems | Date: 2017-05-03

A system and method for scheduling tasks of a construction project includes dividing a plan for a construction project into a plurality of tasks. Each particular task of the plurality of tasks is defined by one or more parameters. The one or more parameters of each particular task are modified based on an operational model defining a sequence of actions for performing the particular task. A construction machine is assigned to each particular task based on the modified one or more parameters of the particular task. Each particular task is dispatched to the construction machine assigned to the particular task for presenting the sequence of actions for performing the particular task.


Method of identification and compensation for inversion of the input bit stream when decoding LDPC codes includes obtaining a code word of the LDPC code from a demodulator output and writing the code word into a buffer memory, decoding the code word, calculating a syndrome for each iteration when decoding, making an analysis of converging the weight of the syndrome, generating an inversion feature for the input bit stream based on this analysis, continuing the decoding, if the inversion feature for the input bit stream does not give evidence of detecting inversion, resetting, if the inversion feature for the input bit stream shows inversion, the LDPC decoder and analysis parameters for the convergence of the weight of the syndrome, reading next code word from the buffer memory, and producing an inversion of this code word, and feeding the word to the decoder input to implement the next decoding operation.


An estimate of the relative attitude between an implement and a vehicle body is computed from a body angular velocity measurement received from at least one body gyro mounted on the vehicle body and from an implement angular velocity measurement received from at least one implement gyro mounted on the implement. A first system state vector estimate corresponding to a first time instant includes a representation of a first relative attitude estimate. An updated system state vector is computed based at least in part on the first system state vector estimate, the body angular velocity vector measurement, and the implement angular velocity vector measurement. A second system state vector estimate corresponding to a second time instant is predicted based at least in part on the updated system state vector and a time-dependent system model. The second system state vector estimate includes a representation of a second relative attitude estimate.


A system and method for providing guidance to a user of a construction machine include computing kinematic behavior of a construction machine based on data received from the construction machine while performing a task. The kinematic behavior is compared with a model for operating the construction machine for performing the task. Feedback data is sent to the construction machine based on the comparing to provide guidance to the user of the construction machine for performing the task.


A method of movement mode determination comprising measurement of vehicles position and orientation and calculation of movement parameters, a compass on the vehicle, is azimuthally oriented along the prevailing and is mostly used movement direction (forward direction), a movement vector measurement unit, is used for measuring the azimuth of movement vector. A calculation unit being used for measuring an angle between vehicle movement vector azimuth measured by the movement vector measurement unit and vehicle azimuth measured by the compass fixed on the vehicle; movement is regarded as backward if the calculated angle is greater than 90 degrees, and forward if the calculated angle is smaller than 90 degrees. Also, an apparatus for movement direction determination includes a compass and a computation unit and further comprises a movement vector measurement unit for determining vehicle movement azimuth and connected through a signal connection to the computation unit.


Patent
Topcon Positioning Systems | Date: 2017-08-09

A dual-frequency patch antenna (200) includes a ground plane (202), an inside radiator (204), and an outside radiator (206). The inside radiator is configured as a region with a periphery, along which is a series of first protrusions separated by first grooves. The outside radiator is configured as a ring with an outer periphery, along which is a set of capacitive elements, and an inner periphery, along which is a series of second protrusions separated by second grooves. A set of conducting elements (208) electrically connect the series of second protrusions with the ground plane. The inside radiator and the outside radiator can be fabricated on a dielectric substrate (210) separated from the ground plane by a dielectric solid or air. The inside radiator and the outside radiator can be disposed on the same surface or on different surfaces of the dielectric substrate.


Patent
Topcon Positioning Systems | Date: 2017-04-19

A method and a system in which an image of an object having a tip end and a plurality of markings disposed on an outer surface is acquired, a distance between the measurement system and each of the plurality of markings and a plurality of angles at which the object is positioned in the three-dimensional space are determined, a three- dimensional vector of the object is determined based on the distance between the measurement system and each of the plurality of markings and based on the plurality of angles at which the object is positioned in the three-dimensional space, and a position of the tip end in the three-dimensional space is determined based on the distance to each of the plurality of markings and based on the three-dimensional vector of the object.


Patent
Topcon Positioning Systems | Date: 2017-05-10

A system for displaying information to an operator of a machine comprises a head tracking system and a projection system. One system for displaying information uses a projection system and a see-through display to present two-dimensional images to an operator. One system uses a projection system and a see-through display to present three-dimensional images to an operator. One system uses a pair of smart glasses to display information to a user based a direction a user is looking.


Patent
Topcon Positioning Systems | Date: 2017-05-03

Systems and methods for automating a task of a construction machine include receiving machine data from a first construction machine and a second construction machine. A load balance of the first construction machine is determined based on the received machine data. A location on the first construction machine to release a load is determined based on the load balance. A message is sent to the second construction machine to control movement for releasing a load of the second construction machine at the determined location on the first construction machine.

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