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US 7,030,766 B2Granted
Ambient condition detector with multi-function test
AssigneeEdwards Systems Technology, Inc.
InventorsRobert Right, Hilario Costa, Jan Braam, Paul Schatz
Life of this patent
Estimating the term…
Abstract
A device with a multi-function test feature for assessing or directing multiple sensor functions is provided for monitoring and interrogating air flow through Heating/Ventilation/Air-conditioning (HVAC)-type ducts for changes to ambient conditions such as smoke, heat, gas, and/or relative humidity.
Claims28
A device for detecting an ambient condition, comprising:
- a first sensor that determines the presence of a first condition and provides a first alarm signal;
- a multi-test switch having a multiple engage positions with a first engaged position for activating a first activity and a second engaged position for activating a second activity;
- and
- a control unit comprising a processor coupled to the sensor, the control unit providing a status message indicative of the state of the first alarm signal the switch is disposed on both the control unit and on the first sensor, wherein when the switch is activated, the control unit determines a length of time the switch is active then initiates a dirty test if the switch is active for a specified length of time and initiates an alarm test if the switch is active for greater than specified length of time.
1 more element
A device for detecting an ambient condition, comprising:
- a sensor to determine the presence of a condition, the sensor providing an alarm signal;
- a multi-test switch having a multiple engage positions with a first engaged position for activating a first activity and a second engaged position for activating a second activity;
- and
- a processor that provides a status message indicative of the state of the alarm signal, wherein the switch is disposed on both the processor and on the sensor, wherein the processor determines a length of time the switch is activated then initiates a dirty test if the switch is active for a specified length of time and initiates an alarm test if the switch is active for greater than specified length of time.
1 more element
A detection system for detecting ambient conditions, comprising:
- first sensing means for determining the presence of a first ambient condition and for providing a first alarm signal;
- a multi-test switch having a multiple engage positions with a first engaged position for activating a first activity and a second engaged position for activating a second activity ;
- and
- control means comprising a processing means coupled to the sensing means for providing a status message indicative of the state of the first alarm signal, wherein the switching means is equipped with a multi test button disposed on both the control means and the sensing means, wherein the control means is configured to determine the length of time the switching means is activated then initiates a dirty test if the switch is active for greater than specified length of time.
1 more element
Dependencies are inferred from the claim text.