发明名称 |
Device and method for measuring the level of a liquid within a container |
摘要 |
A device for measuring the level of a liquid within a container, in particular the level of liquid gas, comprises a housing and a piezoelectric element adapted for generating vibrations when energized. A coupling pad is provided which is bonded to the piezoelectric element for transmitting the vibrations to a surface of the container. Further, a non-tilting element is provided which surrounds the coupling pad. A method for measuring the level of liquid within a container uses a piezoelectric element for generating vibrations which are transmitted into the shell of the container. An analyzing strategy is used which distinguishes between normal post-pulse oscillations of the piezoelectric element after a measurement was triggered, and extended post-pulse oscillations which are the result of echoed oscillations in the shell of the container. |
申请公布号 |
US9395228(B2) |
申请公布日期 |
2016.07.19 |
申请号 |
US201313768608 |
申请日期 |
2013.02.15 |
申请人 |
Truma Geraetetechnik GmbH & Co. KG |
发明人 |
Molitor Thomas;Ibach Frank |
分类号 |
G01F23/28;G01F23/296 |
主分类号 |
G01F23/28 |
代理机构 |
McNees Wallace & Nurick LLC |
代理人 |
McNees Wallace & Nurick LLC |
主权项 |
1. A device for measuring the level of a liquid within a container, in particular the level of liquid gas, comprising a housing, a piezoelectric element adapted for generating vibrations when energized, a coupling pad bonded to the piezoelectric element for transmitting the vibrations to a surface of the container, and a non-tilting element which surrounds the coupling pad, the device being a handheld device wherein the coupling pad is mounted displaceably in the housing and cooperates with an electric switch for automatically triggering a measurement when said device is being pressed against a container, said coupling pad protruding over a forward surface of said non-tilting element such that a measurement can only be triggered when said measuring device is pressed against a surface of said container in an orientation which is generally perpendicular to said surface. |
地址 |
Putzbrunn DE |