Non-intrusive transient power detection system
First Claim
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1. A non-intrusive transient current detection system for an alternating current (AC) power cord, comprising:
- a split-core current transformer operable to wrap around at least one conductor of an alternating current (AC) power cord and configured to non-intrusively detect an alternating current in the AC power cord;
a power outage trigger coupled to the split-core current transformer and configured to send an outage signal when the alternating current ceases; and
an indicator coupled to the power outage trigger and a timer, wherein the indicator and the timer are configured to indicate when the alternating current ceases based on the outage signal received from the power outage trigger for a threshold amount of time after the outage signal.
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Abstract
A technology is described for a non-intrusive power detection system. An example system may include a non-intrusive power detector configured to be electrically coupled to an alternating current (AC) power line to non-intrusively detect at least one of an alternating current or a voltage in the AC power line. A power change trigger may be coupled to the non-intrusive power detector and configured to detect a change in power in the AC power line. An indicator may be coupled to the power change trigger. The indicator may be configured to indicate when a power change occurs based on an output of the power change trigger.
4 Citations
20 Claims
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1. A non-intrusive transient current detection system for an alternating current (AC) power cord, comprising:
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a split-core current transformer operable to wrap around at least one conductor of an alternating current (AC) power cord and configured to non-intrusively detect an alternating current in the AC power cord; a power outage trigger coupled to the split-core current transformer and configured to send an outage signal when the alternating current ceases; and an indicator coupled to the power outage trigger and a timer, wherein the indicator and the timer are configured to indicate when the alternating current ceases based on the outage signal received from the power outage trigger for a threshold amount of time after the outage signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A non-intrusive power detection system, comprising:
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a non-intrusive power detector configured to be electrically coupled to an alternating current (AC) power line to non-intrusively detect at least one of an alternating current or a voltage in the AC power line; a power change trigger coupled to the non-intrusive power detector and configured to detect a change in power in the AC power line; and an indicator coupled to the power change trigger and a timer, wherein the indicator and the timer are configured to indicate when a power change occurs based on an output of the power change trigger for a threshold amount of time after an outage signal from the power change trigger. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A non-intrusive voltage detection system for an alternating current (AC) power line, comprising:
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a capacitively coupled AC voltage detector configured to non-intrusively detect a voltage in the AC power line, wherein the detected voltage is proportional to a voltage in the AC power line; a voltage change detector coupled to the capacitively coupled AC voltage detector and configured to detect a change in voltage in the AC power line; an indicator coupled to the voltage change detector and a timer, wherein the indicator is configured to indicate when the voltage changes more than a selected threshold based on an output of the voltage change detector; and a timer coupled to the voltage change detector and the indicator, the timer being configured to communicate a voltage change signal to the indicator after an output of the voltage change detector indicates the voltage has changed for more than the selected threshold for a predetermined amount of time. - View Dependent Claims (17, 18, 19, 20)
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Specification