Fluid level measuring device
First Claim
Patent Images
1. In a container containing a fluid, a fluid level measuring device for measuring a fluid filling level in the container, the fluid level measuring device comprising:
- a float disposed in the container and having a given relative density less than a relative density of the fluid;
a magnet generating a magnetic field disposed in the container and coupled to said float in terms of movement and, in an event of a change in the fluid filling level said magnet executes a movement corresponding to the change in the fluid filling; and
a giant magneto resistor sensor disposed outside of the container in a zone of influence of the magnetic field generated by said magnet and outputs an electrical signal representative of a height of the fluid filling level of the container, said giant magneto resistor sensor serving to obtain contactless information concerning the fluid filling level.
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Abstract
A fluid level measuring device for measuring a fluid filling level in a container contains a float disposed in the container and a magnet disposed in the container. The magnet is coupled to the float in terms of movement and, in the event of a change in the fluid filling level, executes a movement that corresponds to a change in fluid level. A magnetic field sensor is disposed in a zone of influence of a magnetic field generated by the magnet and outputs an electrical signal which is representative of a height of the fluid level.
33 Citations
14 Claims
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1. In a container containing a fluid, a fluid level measuring device for measuring a fluid filling level in the container, the fluid level measuring device comprising:
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a float disposed in the container and having a given relative density less than a relative density of the fluid;
a magnet generating a magnetic field disposed in the container and coupled to said float in terms of movement and, in an event of a change in the fluid filling level said magnet executes a movement corresponding to the change in the fluid filling; and
a giant magneto resistor sensor disposed outside of the container in a zone of influence of the magnetic field generated by said magnet and outputs an electrical signal representative of a height of the fluid filling level of the container, said giant magneto resistor sensor serving to obtain contactless information concerning the fluid filling level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification
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Current AssigneeInfineon Technologies AG
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Original AssigneeSiemens AG
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InventorsVolpe, Francesco, Estevez-Garcia, Jaime
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Primary Examiner(s)Williams, Hezron
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Assistant Examiner(s)LOO, DENNIS S
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Application NumberUS09/401,389Time in Patent Office538 DaysField of Search733/05, 733/17, 733/19, 733/20, 733/21, 733/07, 200/84.CUS Class Current73/305CPC Class CodesG01F 23/36 using electrically actuated...G01F 23/38 using magnetically actuated...G01F 23/62 using magnetically actuated...G01F 23/72 using magnetically actuated...
