Excavator limb length determination using a laser distance meter
US10253476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2018 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | May 14, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/3681
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A framework comprises a laser distance meter (LDM), reflector, and excavator comprising a boom, a stick, boom and stick sensors, implement, and a controller. The LA comprises a boom and stick defining LA positions. The LDM is configured to generate a DLDM and θINC between the LDM and the reflector, and the controller is programmed to generate θB at a plurality of boom positions, generate θS at a plurality of stick positions, and calculate a height H and a distance D between a node on the stick and the LDM based on DLDM and θINC, build a set of H, D measurements and a corresponding set of θB, θS, and execute a linear least squares optimization process based on the H, D set and corresponding set of θB, θS to determine and operate the excavator using LB and LS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.