Fuel system safety device for run-dry conditions
First Claim
1. A power line fault response device, comprising:
- sensor circuitry configured for sensing an operational aspect of a power line;
analog signal processing circuitry configured to detect electrical current in the power line and configured to perform an output operation in response to detecting a fault comprising a variation in the detected electrical current; and
digital signal processing circuitry comprising a processor and memory that is configured to detect electrical current in the power line based on the operational aspect and to perform the output operation in response to detecting a variation in the detected electrical current.
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Accused Products
Abstract
Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line, such as current levels in a three-phase power line, and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time).
30 Citations
20 Claims
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1. A power line fault response device, comprising:
- sensor circuitry configured for sensing an operational aspect of a power line;
analog signal processing circuitry configured to detect electrical current in the power line and configured to perform an output operation in response to detecting a fault comprising a variation in the detected electrical current; and
digital signal processing circuitry comprising a processor and memory that is configured to detect electrical current in the power line based on the operational aspect and to perform the output operation in response to detecting a variation in the detected electrical current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- sensor circuitry configured for sensing an operational aspect of a power line;
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17. A power line fault response device, comprising:
- sensor circuitry configured for sensing an operational aspect of a power line;
analog signal processing circuitry configured to detect electrical current in the power line and configured to perform an output operation in response to detecting a fault comprising a variation in the detected electrical current;
digital signal processing circuitry comprising a processor and memory that is configured to detect electrical current in the power line based on the operational aspect and to perform the output operation in response to detecting a variation in the detected electrical current;
wherein the analog signal processing circuitry and the digital signal processing circuitry are each configured to operate independently and simultaneously to respond to faults as they occur to prevent a detected fault from damaging a load being supplied with power by the power line. - View Dependent Claims (18)
- sensor circuitry configured for sensing an operational aspect of a power line;
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19. A power line fault response device comprising:
- sensors configured for sensing an electrical current of a poly-phase power line;
analog-to-digital circuitry that receives analog signals from the sensors;
processor circuitry comprising a memory that is configured to receive digital signals from the analog-to-digital circuitry and to monitor the digital signals for conditions indicative of faults;
means for comparing the digital signals to known values in the memory to determine a fault condition; and
means for terminating the fault condition. - View Dependent Claims (20)
- sensors configured for sensing an electrical current of a poly-phase power line;
Specification