Stone detection method and apparatus for harvester
US6601372B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Mar 18, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D75/187
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An agricultural harvester having a header with a reel and an auger, wherein the reel and the auger provide crop material to an elevator and a foreign object detecting mechanism, wherein the foreign object detecting mechanism includes a foreign object detecting circuit for detecting foreign objects and an object extrusion mechanism operationally connected to be activated by the detecting circuit. The detecting circuit includes a first vibration sensor, a programmable amplifier, a frequency bandpass filter, a variable threshold comparator, and a microprocessor including a pulse rejection network. The microprocessor is electronically connected to control the threshold comparator and the programmable amplifier, and activates the object extrusion mechanism when the pulse rejection network generates an internal signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.