Excavator implement length and angle offset determination using a laser distance meter
US9995017B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Dec 8, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/265
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A framework comprises a laser distance meter (LDM), first and second laser reflectors at respective nodes, and an excavator including a chassis, a linkage assembly (LA) including a boom and stick, an implement including the nodes and tilting about axis TA, an implement sensor generating signal θtilt, and architecture. The LDM generates LDM distance signals DLDM and LDM angle of inclination signals θINC between the LDM and the laser reflectors. The architecture comprises LA actuators and a controller programmed to determine the TA relative to horizontal based on θtilt and execute an iterative process to curl the excavating implement and create bucket angles, align the LDM and the first node to determine a set of rotated IDV, align the LDM and the second node to determine a set of rotated IPV, and determine implement dimensions between the nodes based on the set of rotated IDV and IPV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.