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US 2015/0028163 A1Published application
Current Sensor for Monitoring a Wayside Signal Lamp for a Positive Train System
AssigneeAlstom Transport SA
InventorsRobert I. Hochman, Bruce Vernon Johnson
Life of this patent
Estimating the term…
Abstract
A sensor for monitoring the current flowing in a wire of a circuit is provided. The sensor includes a variable inductance contactless current detector to sense the current flowing in the wire, serially connected to an internal power source and a resistor to form a voltage divider circuit. The sensor also includes a voltage detector to monitor the voltage level across the resistor and generate an output signal. A system is also provided.
Claims10
A current sensor for monitoring the current flowing in a wire of a circuit, the current sensor comprising:
- a variable inductance contactless current detector to sense the current flowing in the wire, serially connected to an internal power source and a resistor to form a voltage divider circuit;
- and
- a voltage detector to monitor the voltage level across the resistor and generate an output signal.
Dependencies are inferred from the claim text.