Irrigation control system
US4423484A · kind A · utility
59Cited by
18References
11Claims
0Family size
Inventor
Key dates
| Filing date | Mar 30, 1981 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Mar 30, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86461
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An irrigation control system is provided which includes circuitry for minimizing electrical power consumption to permit battery-powered operation. The system also includes a microcomputer which is in a quiescent mode except when actuated by a rising edge of a clock signal which has been processed by two type C flip-flops. The microcomputer is programmed to drive a display and to control a valve which includes a bi-stable solenoid for controlling an irrigation cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.