Method, circuit arrangement, and system for identifying impedance changes in a signal line
AssigneeRobert Bosch GmbH
InventorFelix Fellhauer
Life of this patent
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Abstract
A method and to a circuit arrangement for identifying impedance changes in a signal line in a communication system. A first signal at a first frequency is input at a first end of the signal line, wherein a signal coming from the signal line and present at the first end is detected, is sampled at a second frequency different from the first frequency, and is analyzed for an impedance change. The state of the signal line is deduced on the basis of the analyzed signal.
Claims14
A method for identifying impedance changes in a signal line in a communication system, comprising the following steps:
- inputting a first signal at a first frequency at a first end of the signal line;
- detecting a signal coming from the signal line and present at the first end, sampling the signal at a second frequency different from the first frequency, and analysing the sampled signal for an impedance change;
- and
- deducing a state of the signal line based on the analyzed signal.
A circuit arrangement configured to identify an impedance change in a signal line in a communication system, comprising:
- a first signal generation unit configured to input a first signal at a first frequency at a connected first end of the signal line;
- and
- a first readout unit configured to detect a signal coming from the signal line and present at the connected first end, to sample the signal present at the connected first end at a second frequency different from the first frequency, and to analyze the sampled signal for the impedance change.
A system, comprising:
- a circuit arrangement including:
- a first signal generation unit configured to input a first signal at a first frequency at a connected first end of a signal line in a communication system, and
- a first readout unit configured to detect a signal coming from the signal line and present at the connected first end, to sample the signal present at the connected first end at a second frequency different from the first frequency, and to analyze the sampled signal for the impedance change;
- and
- a further circuit arrangement including:
- a second readout unit, which is configured to detect a signal coming from the signal line and present at a connected second end of the signal line and to determine its frequency as the first frequency, and
- a second signal generation unit configured to generate a second signal at the second frequency depending on the first frequency and to input the second signal at the connected second end of the signal line.
A computing unit configured to identify impedance changes in a signal line in a communication system, the computing unit configured to:
- input a first signal at a first frequency at a first end of the signal line;
- detect a signal coming from the signal line and present at the first end, sampling the signal at a second frequency different from the first frequency, and analysing the sampled signal for an impedance change;
- and
- deduce a state of the signal line based on the analyzed signal.
A non-transitory machine-readable storage medium on which is stored a computer program for identifying impedance changes in a signal line in a communication system, the computer program, when executed by a computer, causing the computer to perform the following steps:
- inputting a first signal at a first frequency at a first end of the signal line;
- detecting a signal coming from the signal line and present at the first end, sampling the signal at a second frequency different from the first frequency, and analysing the sampled signal for an impedance change;
- and
- deducing a state of the signal line based on the analyzed signal.
Dependencies are inferred from the claim text.