Measuring device and method for determining temperature and/or pressure using measuring device
AssigneeSiemens Aktiengesellschaft
InventorsHans-Gerd Brummel, Uwe Linnert, Klaus Newerla, Michael Willsch
Life of this patent
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Abstract
At least one transceiver sends ultrasonic pulses through an object, which at least partially transmits ultrasonic pulses, into an element which reflects the ultrasonic pulses. The ultrasonic pulse(s) can be reflected in a temperature-correlated manner from the reflective element to the transceiver.
Claims30
A measuring device for determining temperature through a wall at least partially transmissive of ultrasonic pulses, comprising:
- reflection means, arranged on a surface of the wall, for reflecting ultrasonic pulses in a temperature-correlated manner;
- and
- a transmission/reception unit, arranged on the wall with the wall surface on which said reflection means is arranged facing away from said transmission/reception unit, transmitting at least one ultrasonic pulse through the wall to said reflection means and receiving at least a fraction of the at least one ultrasonic pulse reflected in the temperature-correlated manner from said reflection means towards said transmission/reception unit,
- wherein said reflection means comprises a container with a thermally conductive wall and an orifice facing the wall, the container containing a material, the sound velocity of which has a higher temperature coefficient than the wall.
A measuring device for determining temperature through a wall at least partially transmissive of ultrasonic pulses, comprising:
- reflection means, arranged on a surface of the wall, for reflecting ultrasonic pulses in a temperature-correlated manner;
- and
- a transmission/reception unit, arranged on the wall with the wall surface on which said reflection means is arranged facing away from said transmission/reception unit, transmitting at least one ultrasonic pulse through the wall to said reflection means and receiving at least a fraction of the at least one ultrasonic pulse reflected in the temperature-correlated manner from said reflection means towards said transmission/reception unit, wherein said reflection means comprises:
- a surface wave resonator;
- and
- one of an acoustic mode transformer and a piezoelectric transformer, transmitting the at least one ultrasonic pulse between the surface wave resonator and the wall.
A measuring device for determining temperature through a wall at least partially transmissive of ultrasonic pulses, comprising:
- reflection means, arranged on a surface of the wall, for reflecting ultrasonic pulses in a temperature-correlated manner;
- and
- a transmission/reception unit, arranged on the wall with the wall surface on which said reflection means is arranged facing away from said transmission/reception unit, transmitting at least one ultrasonic pulse through the wall to said reflection means and receiving at least a fraction of the at least one ultrasonic pulse reflected in the temperature-correlated manner from said reflection means towards said transmission/reception unit, wherein said reflection means comprises a piezoelectric oscillator having two electrodes and being excited into resonant oscillation by the at least one ultrasonic pulse.
Dependencies are inferred from the claim text.