Apparatus for measuring weight of bulk material conveyed by belt conveyor
US4134465A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1975 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Dec 16, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G11/046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for cumulatively measuring the weight of a continuous bulk material conveyed by a belt conveyer, comprising; a pulse generator operatively coupled to the conveyer for generating pulses of the frequency associated with the conveyer speed; a decimal counter for counting the speed associated pulses; a full scale detector coupled to the decimal counter; a load cell operatively coupled to the conveyer for providing an analog signal representative of the weight of the material within a predetermined span of the conveyor; an analog-to-digital converter responsive to the full scale output for converting the analog signal into a bit parallel coded digital signal; logical processing means for modifying the number of pulses obtainable from the decimal counter within one full scale of the counter as a function of the bit parallel coded digital signal and a cumulative counter for counting the pulses thus modified of the pulse number. Preferably, the decimal counter, the logical processing means and the analog-to-digital converter each comprises the most significant digit portion and the less significant digit portions, and the outputs from the most and less significant digit portio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.