发明名称 System and method for estimating position of machine
摘要 A system having a primary inertial measurement unit and a secondary inertial measurement unit configured to generate a primary position signal and a secondary position signal respectively is provided. The system also includes an error detection module communicably coupled to the primary inertial measurement unit and the secondary inertial measurement unit. The error detection module is configured to receive the primary position signal and the secondary position signal and detect if an out-range error is present in at least one of the primary position signal and the secondary position signal. The error detection module is also configured to detect if an in-range error is present in at least one of the primary position signal and the secondary position signal and determine an action to be performed based on the presence of at least one of the out-range error and the in-range error.
申请公布号 US9254822(B1) 申请公布日期 2016.02.09
申请号 US201414519822 申请日期 2014.10.21
申请人 Caterpillar Inc. 发明人 Friend Paul R.;Evans Timothy;Chen Qi;Whitten Andrew T.;Vogel Nicholas R.;Chang Hong;Chikni Salman;Willis Frank A.
分类号 B60T7/12;G01C21/16 主分类号 B60T7/12
代理机构 Finnegan, Henderson, Farabow, Garrett & Dunner, LLP 代理人 Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
主权项 1. A system comprising: a primary inertial measurement unit configured to generate a primary position signal, the primary position signal indicative of an estimated position of a machine on a worksite; a secondary inertial measurement unit configured to generate a secondary position signal, the secondary position signal indicative of the estimated position of the machine; and an error detection module communicably coupled to the primary inertial measurement unit and the secondary inertial measurement unit, the error detection module configured to: receive the primary position signal from the primary inertial measurement unit;receive the secondary position signal from the secondary inertial measurement unit;detect if an out-range error is present in at least one of the primary position signal and the secondary position signal, wherein the presence of the out-range error is based on the respective primary position signal or the secondary position signal exceeding a first predetermined threshold;detect if an in-range error is present in at least one of the primary position signal and the secondary position signal based, at least in part, on the presence of the out-range error in the respective primary position signal or the secondary position signal, wherein the presence of the in-range error is based on the respective primary position signal or the secondary position signal exceeding a second predetermined threshold; anddetermine an action to be performed based, at least in part, on the presence of at least one of the out-range error and the in-range error in the respective primary position signal or the secondary position signal.
地址 Peoria IL US