Theft detection in HVAC unit having persistent alarm
First Claim
1. A notification system for an air conditioning system, comprising:
- a source of electric power having a first power terminal and a second power terminal;
a first connector and a second connector configured to be connected to a continuity sensor;
a first switching device, the first switching device operably coupled and configured to connect the first power terminal to a first output responsive to an interruption of current from the first connector to the second connector;
a second switching device having a second output coupled to the first output, the second switching device configured to connect the first power terminal to the second output responsive to the presence of current on the second output;
a notification device having a first terminal coupled to the first output and the second output, and having a second terminal connected to the second power terminal.
0 Assignments
0 Petitions
Accused Products
Abstract
A notification system for an air conditioning system includes a power source, first and second connectors, first and second switches, and a notification device. The power source has first and second power terminals. The first and second connectors are connected to a continuity sensor. The first switching device is configured to connect the first power terminal to a first output responsive to an interruption of current from the first connector to the second connector. The second switching device has a second output coupled to the first output, and is configured to connect the first power terminal to the second output responsive to current on the second output. The notification device is coupled to the first and second outputs, and is configured to generate an audible and/or visible notification responsive to power received from the outputs.
30 Citations
18 Claims
-
1. A notification system for an air conditioning system, comprising:
-
a source of electric power having a first power terminal and a second power terminal; a first connector and a second connector configured to be connected to a continuity sensor; a first switching device, the first switching device operably coupled and configured to connect the first power terminal to a first output responsive to an interruption of current from the first connector to the second connector; a second switching device having a second output coupled to the first output, the second switching device configured to connect the first power terminal to the second output responsive to the presence of current on the second output; a notification device having a first terminal coupled to the first output and the second output, and having a second terminal connected to the second power terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for detecting activity in an air conditioning system, comprising:
-
providing electric power between a first power terminal and a second power terminal; extending a continuity sensor in a conduit extending from an exterior unit of an HVAC system to a location within a facility; providing a first switching device, the first switching device operably configured to transition from an open state to a connected state responsive to an interruption of current through the continuity sensor, wherein the first switching device connects the first power terminal to a first output in the connected state; providing a latching device configured to transition from a first state to a latched state responsive to the first switching device transitioning to the connected state, and wherein the latching device remains in the latched state when the first switching device transitions from the connected state to the open state, and where the latching device connects the first power terminal to the first output in the latched state; and activating a notification device responsive to a voltage at the first output. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification