发明名称 |
SYSTEM AND METHOD FOR SENSING THE LEVEL AND COMPOSITION OF LIQUID IN A FUEL TANK |
摘要 |
In a liquid sensing system, an RF signal is applied to a series-resonant circuit. The coil of the resonant circuit is placed proximate to a fuel tank, causing electromagnetic radiation to propagate into the fuel space. The fuel acts as an electrical load to the resonant circuit in a manner proportionate to the volume of fuel in the tank and/or to variations in electrical properties of the fuel itself. The loading effect of the fuel can change the resonant frequency and/or the Q of the resonant circuit. The loading effect of the fuel is determined by monitoring a change in one or more electrical parameters associated with the excited resonant circuit, such as a voltage across the resistor in the resonant circuit. Changes in this voltage are analyzed by a controller, the result of which is used to output a value indicative of level and/or composition of the fuel. |
申请公布号 |
EP1880173(A2) |
申请公布日期 |
2008.01.23 |
申请号 |
EP20060752472 |
申请日期 |
2006.05.10 |
申请人 |
SCHRADER BRIDGEPORT INTERNATIONAL, INC |
发明人 |
BOUDADOUD, IDIR;STEWART, WILLIAM DAVID;MCCALL, ALAN KENNETH |
分类号 |
G01F23/22 |
主分类号 |
G01F23/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|