System for ensuring valid communications between a central control and a plurality of remote modules
US4992775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1988 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Oct 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/14
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An annunciation system for a wireless weighing system. The weighing system includes control keys for selecting and displaying the weights from a plurality of remote weighing pads, each having a separate through the air communications channel. The weighing system further provides a mode for storing a zero value for each pad. In the preferred embodiment, the annuniciation system comprises a plurality of LED combinations where each combination is located proximately to a corresponding pad select key which indicates a particular communications channel. Each LED combination has a plurality of states including off, green, red and amber which indicates a condition of the corresponding communications channel. Additionally, each LED combination can indicate a condition of a corresponding communications channel by being off, on steady, or blinking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.