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US 10,684,158 B2Granted
Method and system for monitoring a state
AssigneeTDK-Micronas GmbH
InventorsPhilip Herbst, Hans-Joerg Fink
Life of this patent
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Abstract
A system for monitoring a state, for example a filling state of a container, with a first sensor which in operation produces a measured value, and a second sensor which in operation produces a second, discrete measured value. The first measured value and the second measured value are forwarded to an evaluation unit via a common line.
Claims6
A system for monitoring a state, including:
- a first sensor which in operation produces a first measured value, wherein the first measured value comprises a range of measured values;
- a second sensor which in operation produces a second measured value, wherein the second measured value comprises a limited number of discrete measured values and wherein the first sensor and the second sensor are electrically connected in parallel and have a common two-wire line;
- an evaluation unit, wherein the common two-wire line is adapted to transmit the first measured value and the second measured value to the evaluation unit, wherein the evaluation unit includes:
- a computing unit with a first input and a second input for comparing the signals at the first input and the second input;
- and
- a first resistor and a second resistor, wherein the first input is connected to the common two-wire line and the second input is connected across the first resistor to the common two-wire line, wherein the common two-wire line is connected to the second input via the first resistor, and wherein the second resistor at a first connector is connected to the second input and to the first resistor, and is connected to a ground line at its other connector.
3 more elements
Dependencies are inferred from the claim text.