Method for identifying a system state of a technical system with a sensor device having a passive component, as well as a sensor device and use of a sensor device
First Claim
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1. Method for identifying a system state of a technical system by a sensor device, comprising:
- detecting and communicating the system state with antenna elements for receiving and transmitting radio signals;
regulating the transmission behavior of the antenna elements by controlling at least one load impedance of the antenna elements, and controlling the load impedance of the antenna elements by a physical signal.
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Abstract
A method, as well as an associated sensor device and use of such method, for identifying a system state of a technical system (7) by a sensor device with an antenna element (1; 10) for receiving and transmitting radio signals (13; 14) to detect and communicate the system state. The transmission behavior of the antenna element is determined by controlling at least one load impedance (8) of the antenna element. The load impedance of the antenna element is controlled by a physical signal (6).
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Citations
27 Claims
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1. Method for identifying a system state of a technical system by a sensor device, comprising:
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detecting and communicating the system state with antenna elements for receiving and transmitting radio signals;
regulating the transmission behavior of the antenna elements by controlling at least one load impedance of the antenna elements, and controlling the load impedance of the antenna elements by a physical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 27)
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13. Sensor device, comprising:
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antenna elements receiving and transmitting radio signals; and
a load impedance of one of the antenna elements, wherein the transmission behavior of the one antenna element is regulated by controlling at least the load impedance, and wherein the load impedance is a passive component controlled by a physical signal.
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23. A method, comprising:
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transmitting a radio signal from a first element;
transmitting a further signal, at least one signal property of which is altered upon interaction of the signal with a test subject;
receiving the altered signal with a load impedance that operates without active components;
outputting a reaction of the load impedance to the altered signal to a second element;
reflecting the radio signal from the second element as a reflected radio signal modulated by the reaction output to the second element; and
evaluating the reflected radio signal.
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26. A device, comprising:
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a first antenna element transmitting a radio signal;
a source that outputs a physical signal having a signal property that is altered by interaction with an evaluation subject;
a passive load impedance that produces an output in response to the altered physical signal;
a second antenna element that reflects the radio signal modulated in accordance with the output of the passive load impedance; and
an evaluation unit that processes the reflected radio signal.
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Specification