Closed loop control system, sensing apparatus and fluid application system for a precision irrigation device
US5927603A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Sep 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An automatic irrigation system includes a movable irrigation device having a fluid delivery nozzle and a fluid manifold positioned along the mobile irrigation device and adapted to receive irrigation fluid from a supply source. The system includes a detector of moisture present within an agricultural field including an output on which signals representing the detected moisture level are placed. The system also includes an electronic storage device having an addressing and reproduction unit that can selectively address and reproduce a plurality of stored command signals. The system also includes first electronic circuitry coupled to the storage device and including an input for command control signals reproduced from the storage device. The electronic circuitry applies the reproduced command control signal to cause the detector to detect moisture from a plurality of different locations within an agricultural field. A second electronic circuitry compares the detected moisture level at each location within the agricultural field with the reproduced command control signals to ascertain whether the moisture level matches the moisture level indicated by the command control signals. One o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.