Sensor, method and computer program for determining the density or composition of a fluid
AssigneeWoePal GmbH
InventorsStefan PALZER, Gabriel RODRIGUEZ GUTIERREZ, Alvaro ORTIZ PEREZ
Life of this patent
Estimating the term…
Abstract
A sensor having a MEMS microphone (1) and a processor (2). The MEMS microphone (1) having a noise spectrum depending on a fluid to be analyzed. The processor (2) is configured to receive a measurement signal from the MEMS microphone; to identify a characteristic of the noise spectrum of the MEMS microphone in the measurement signal; and to determine a property of the fluid based on the characteristic identified.
Claims15
A sensor comprising:
- a MEMS microphone having a noise spectrum depending on a fluid to be analyzed;
- and
- processing means configured to
- receive a measurement signal from the MEMS microphone;
- identify a characteristic of the noise spectrum of the MEMS microphone in the measurement signal;
- and
- determine a property of the fluid based on the characteristic identified.
A non-transitory computer program configured to perform the following steps when executed on a processing means:
- receive a measurement signal from a MEMS microphone;
- identify in the measurement signal a characteristic of a noise spectrum of the MEMS microphone;
- and
- determine a property of the fluid based on the characteristic identified.
A method for measuring characteristics of a fluid, the method comprising:
- measuring measurement signal in a MEMS microphone arranged in the fluid;
- identifying with a processing means a characteristic of a noise spectrum of the MEMS microphone in the measurement signal;
- and
- determining with the processing means a property of the fluid based on the noise resonant frequency identified.
Dependencies are inferred from the claim text.