MULTIPLE PROCESOR HAZARD DETECTION SYSTEM
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Accused Products
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.
14 Citations
56 Claims
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1-19. -19. (canceled)
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20. A hazard detection system, comprising:
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at least one sensor; a sensor state machine operative to transition to any one of a plurality of sensor states, wherein sensor state machine transitions are based on data acquired by the at least one sensor, a first set of condition parameters, and hush events; and a system state machine operative to transition to any one of a plurality of system states, the system states comprising the sensor states, wherein system state machine transitions are based on the data acquired by the at least one sensor, the hush events, and a second set of condition parameters, and wherein the sensor states shared between the sensor state machine and the system state machine are controlled by the sensor state machine. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A hazard detection system, comprising:
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a plurality of sensors comprising a smoke sensor, a carbon monoxide sensor, and a heat sensor; an alarm; a speaker; a first processor communicatively coupled to the plurality of sensors and the alarm, the first processor comprising; a plurality of sensor state machine operation conditions, the sensor state machine operation conditions comprising a plurality of alarm thresholds, wherein each of the smoke sensor, the carbon monoxide sensor, and the heat sensor is associated with at least one alarm threshold, and wherein the first processor is operative to; acquire data values from the smoke sensor, the carbon monoxide sensor, and the heat sensor; and activate the alarm in response to determining that a data value associated with at least one of the plurality of sensors is one of equal to an greater than one of the sensor state machine operation conditions; and a second processor communicatively coupled to the first processor and the speaker, the second processor comprising; a plurality of system state machine operation conditions, the system state machine operation conditions comprising a plurality of pre-alarm thresholds, wherein the second processor is operative to; receive the acquired data values; and playback a message using the speaker in response to determining that a received data value is one of equal to and greater than one of the system state machine operation conditions. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56-119. -119. (canceled)
Specification