Cotton gin monitoring system
US4003046A · kind A · utility
Inventors
Key dates
| Filing date | Sep 12, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Sep 12, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P1/103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for monitoring the operation of a plurality of rotating-shaft machines, including a switchable meter to indicate the shaft speed of any one of these machines. Each machine has a monitoring circuit including respective visual warning branch circuits to indicate if the machine shaft falls below a first preset speed and then to indicate if the machine shaft falls below a second preset speed, with provision for sounding an audible alarm. The system has a single power supply, switchable meter, audible alarm control circuit and warning reset circuit, and identical monitor modules for the respective machines to be monitored. Each module has an external sensor, consisting of a pickup coil and a magnet assembly attached to the rotating shaft of the monitored machine; a high-gain integrated circuit amplifier to amplify the pulses from the sensor; circuitry to convert the pulses to a D.C. voltage proportional to shaft speed; visual warning and alarm lamps; a switch to connect the audible alarm to the module or optionally to disconnect it; separate high-gain integrated circuit amplifiers to control the indicating meter, visual warning, and visual/audible alarm; and multi-turn potentio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.