Methods and systems for detecting compromised sensors using dynamic watermarking
AssigneeThe Texas A&M University System
InventorsPrasad N. Enjeti, Le Xie, Panganamala R. Kumar
Life of this patent
Estimating the term…
Abstract
Systems and methods for detecting compromised sensors using dynamic watermarking. In some examples, a method includes injecting a dynamic random signal into an input of a power distribution system. The power distribution system includes at least one sensor and at least one power electronic controller configured to use the at least one sensor. The method includes monitoring a sensor signal from the at least one sensor. The method includes determining whether the at least one sensor is compromised based on a comparison between the dynamic random signal and the sensor signal.
Claims20
A method comprising:
- injecting a dynamic random signal into an input of a power distribution system, the power distribution system comprising at least one sensor and at least one power electronic controller configured to use the at least one sensor;
- monitoring a sensor signal from the at least one sensor;
- and
- determining whether the at least one sensor is compromised based on a comparison between the dynamic random signal and the sensor signal.
A system comprising:
- a watermarking device comprising:
- an input for receiving an electrical signal;
- a watermark injector circuit configured for injecting a dynamic random signal into the electrical signal;
- and
- an output for outputting the electrical signal with the dynamic random signal superimposed on the electrical signal to a power distribution system, the power distribution system comprising at least one sensor and at least one power electronic controller configured to use the at least one sensor;
- and
- a monitoring system, implemented on at least one processor, configured for monitoring a sensor signal from the at least one sensor and determining whether the at least one sensor is compromised based on a comparison between the dynamic random signal and the sensor signal.
Dependencies are inferred from the claim text.