Method for collecting liquid temperature data from a fuel tank
US5613778A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for collecting liquid temperature data from a fuel tank id achieved by providing a thermal sensitive resistive element that produces a value proportional to the liquid's temperature, a capacitor for storing a charge representative of this value, and a resistor through which the capacitor is discharged. Circuitry and software is provided that compares the voltage across the resistor to a reference as the capacitor discharges, determines the number of clock counts for which a predetermined relationship exists between the voltage across the resistor and the reference, then consults a table to determine an absolute temperature based on this clock count.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.