Systems and methods for multi-criteria alarming
First Claim
1. A hazard detection system, comprising:
- a smoke sensor;
an alarm; and
a processing component in communication with the smoke sensor, the processing component operative to;
receive smoke data values from the smoke sensor;
receive a hush event command; and
in response to receiving the hush event command, transition among three or more states based on the received smoke data values and a plurality of transition conditions, wherein;
the three or more states comprise;
an alarm hush state, wherein transition from a first alarm state to the alarm hush state is available based on the smoke data values being less than a high smoke threshold level;
the first alarm state in which transition to the alarm hush state is available due to the smoke data values being less than the high smoke threshold level; and
a second alarm state in which transition to the alarm hush state is unavailable due to the smoke data values being greater than the high smoke threshold level;
the plurality of transition conditions comprises a plurality of different smoke thresholds; and
for each state transition, the transitioning comprises comparing the smoke data values to one of the different smoke thresholds.
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Abstract
Systems and methods for using multi-criteria state machines to manage alarming states and pre-alarming states of a hazard detection system are described herein. The multi-criteria state machines can include one or more sensor state machines that can control the alarming states and one or more system state machines that can control the pre-alarming states. Each state machine can transition among any one of its states based on sensor data values, hush events, and transition conditions. The transition conditions can define how a state machine transitions from one state to another. The hazard detection system can use a dual processor arrangement to execute the multi-criteria state machines according to various embodiments. The dual processor arrangement can enable the hazard detection system to manage the alarming and pre-alarming states in a manner that promotes minimal power usage while simultaneously promoting reliability in hazard detection and alarming functionality.
50 Citations
36 Claims
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1. A hazard detection system, comprising:
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a smoke sensor; an alarm; and a processing component in communication with the smoke sensor, the processing component operative to; receive smoke data values from the smoke sensor; receive a hush event command; and in response to receiving the hush event command, transition among three or more states based on the received smoke data values and a plurality of transition conditions, wherein; the three or more states comprise; an alarm hush state, wherein transition from a first alarm state to the alarm hush state is available based on the smoke data values being less than a high smoke threshold level; the first alarm state in which transition to the alarm hush state is available due to the smoke data values being less than the high smoke threshold level; and a second alarm state in which transition to the alarm hush state is unavailable due to the smoke data values being greater than the high smoke threshold level; the plurality of transition conditions comprises a plurality of different smoke thresholds; and for each state transition, the transitioning comprises comparing the smoke data values to one of the different smoke thresholds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for operating a hazard detection system comprising a smoke sensor, an alarm, and a processing component in communication with the smoke sensor, the method comprising:
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receiving smoke data values from the smoke sensor; receiving a hush event command; and in response to receiving the hush event command, transitioning among three or more states based on the received smoke data values, and a plurality of transition conditions, wherein; the three or more states comprise; an alarm hush state, wherein transition from a first alarm state to the alarm hush state is available based on the smoke data values being less than a high smoke threshold level; the first alarm state in which transition to the alarm hush state is available due to the smoke data values being less than the high smoke threshold level; and a second alarm state in which transition to the alarm hush state is unavailable due to the smoke data values being greater than the high smoke threshold level; the plurality of transition conditions comprises a plurality of different smoke thresholds; and for each state transition, the transitioning comprises comparing the smoke data values to one of the different smoke thresholds. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A tangible, non-transitory, machine-readable medium, comprising machine-readable instructions configured to cause a processing component to:
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receive smoke data values from a smoke sensor; receive a hush event command; and in response to receiving the hush event command, transition among three or more states based on the received smoke data values, and a plurality of transition conditions, wherein; the three or more states comprise; an alarm hush state, wherein transition from a first alarm state to the alarm hush state is available based on the smoke data values being less than a high smoke threshold level; the first alarm state in which transition to the alarm hush state is available due to the smoke data values being less than the high smoke threshold level; and a second alarm state in which transition to the alarm hush state is unavailable due to the smoke data values being greater than the high smoke threshold level; the plurality of transition conditions comprises a plurality of different smoke thresholds; and for each state transition, the transitioning comprises comparing the smoke data values to one of the different smoke thresholds. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification