VITAL CURRENT SENSOR
First Claim
Patent Images
1. A system for sensing current, comprising:
- a processor;
a current sensor coupled to the processor, the current sensor having a first sensor threshold value and a second sensor threshold value; and
a current generator coupled to the current sensor;
wherein the current generator is operable to generate a time-varying linear test current signal having a first value below the first sensor threshold value and a second value above the second sensor threshold value;
the current sensor is operable to be coupled to an external device and the current generator;
the current sensor is operable to output a sensor output signal to the processor, the sensor output signal being dependent on a first current associated with the current generator and a second current associated with the external device; and
the processor is operable to determine a time between a crossing of the first sensor threshold and a crossing of the second sensor threshold.
4 Assignments
0 Petitions
Accused Products
Abstract
A system for sensing current, comprising: a processor; a current sensor coupled to the processor and including a sensor threshold value; and a current generator coupled to the current sensor; wherein the current generator is operable to generate a test current signal defined by a time-varying linear function, the current sensor is operable to be coupled to an external current source, the current sensor is operable to output a sensor output signal based on a detected current to the processor, and the processor is operable to determine a magnitude of the sensor threshold value based on the sensor output signal.
-
Citations
18 Claims
-
1. A system for sensing current, comprising:
-
a processor; a current sensor coupled to the processor, the current sensor having a first sensor threshold value and a second sensor threshold value; and a current generator coupled to the current sensor; wherein the current generator is operable to generate a time-varying linear test current signal having a first value below the first sensor threshold value and a second value above the second sensor threshold value; the current sensor is operable to be coupled to an external device and the current generator; the current sensor is operable to output a sensor output signal to the processor, the sensor output signal being dependent on a first current associated with the current generator and a second current associated with the external device; and the processor is operable to determine a time between a crossing of the first sensor threshold and a crossing of the second sensor threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for sensing current, comprising:
-
applying a time-varying linear test current to a current sensor, the current sensor having a current sensor output being dependent on a current flowing through an external device and the test current, the current sensor having a first sensor threshold value and a second sensor threshold value; determining a time between a crossing of the first sensor threshold and a crossing of the second sensor threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification