Abstract: Devices, systems, and methods for event device system operation are described herein. In some examples, one or more embodiments include a controller comprising a memory and a processor to execute instructions stored in the memory to transmit, to a plurality of event devices via a power line communications (PLC) protocol, a synchronization message according to a predetermined schedule to cause the plurality of event devices to synchronize timing of the plurality of event devices with the controller, transmit, to the plurality of event devices via the PLC protocol, a command according to the predetermined schedule, and receive, from the plurality of event devices via the PLC protocol, a response to the command according to the predetermined schedule.

Abstract: Systems and methods for delaying or activating a blowout device in a sampling pipe network of an aspirated smoke detection system are provided. Some systems can include an aspirated smoke detector, a sampling pipe coupled to the aspirated smoke detector, a blowout device coupled to the sampling pipe, and a delay device coupled to the blowout device. Responsive to the aspirated smoke detector detecting a triggering event, the delay device can delay the blowout device from performing a blowout action in the sampling pipe or can instruct the blowout device to perform the blowout action in the sampling pipe.

Abstract: Systems and methods for delaying or activating a blowout device in a sampling pipe network of an aspirated smoke detection system are provided. Some systems can include an aspirated smoke detector, a sampling pipe coupled to the aspirated smoke detector, a blowout device coupled to the sampling pipe, and a delay device coupled to the blowout device. Responsive to the aspirated smoke detector detecting a triggering event, the delay device can delay the blowout device from performing a blowout action in the sampling pipe or can instruct the blowout device to perform the blowout action in the sampling pipe.

Abstract: A method of operating an aspirated smoke detector includes providing an ambient condition detector, establishing a first flow baseline for the detector, establishing a second, lower, flow baseline for the detector, sampling a selected airflow, and determining if the slected airflow as sampled should be compared to the first flow baseline or the second, lower, flow baseline, and responsive thereto, determining if a trouble indictor should be generated.

Abstract: Systems and methods for optimizing battery life in wireless multi-hop communication systems are provided. Some methods include a child node transmitting a data packet to a parent node in a wireless system, wherein the data packet includes a parent node identifier, data information, and a length of the data information, and wherein the data packet omits inclusion of a child node identifier. Some methods include a parent node receiving a data packet from a child node in a wireless system, wherein the data packet includes a parent node identifier, data information, and a length of the data information, and wherein the data packet omits inclusion of a child node identifier.

Abstract: A method of operating an aspirated smoke detector includes providing an ambient condition detector, establishing a first flow baseline for the detector, and, establishing a second, lower, flow baseline for the detector. A selected airflow is sampled, and determining if the airflow sample should be compared to the first flow baseline or the second flow baseline, and, responsive thereto determining if a trouble indictor should be generated.

Abstract: Systems and methods for optimizing battery life in wireless multi-hop communication systems are provided. Some methods include a child node transmitting a data packet to a parent node in a wireless system, wherein the data packet includes a parent node identifier, data information, and a length of the data information, and wherein the data packet omits inclusion of a child node identifier. Some methods include a parent node receiving a data packet from a child node in a wireless system, wherein the data packet includes a parent node identifier, data information, and a length of the data information, and wherein the data packet omits inclusion of a child node identifier.

Abstract: A sensor assembly includes a sensor configured to detect at least one material or condition, such as a smoke detector, fire detector, or carbon monoxide detector. The sensor assembly also includes a base configured to be mounted on a structure, such as a wall or ceiling, and to receive the sensor. The sensor assembly further includes a wireless module located between the sensor and the base. The wireless module is configured to transmit position information. The wireless module may include one or more electrical contacts used to form at least one electrical connection between the base of the sensor assembly and the sensor. The wireless module may also include a printed circuit board having the contacts, wireless radio circuitry, an antenna, and other components. The printed circuit board could be substantially hidden from view when the sensor is attached to the base and the base is mounted on the structure.

Abstract: A sensor assembly includes a sensor configured to detect at least one material or condition, such as a smoke detector, fire detector, or carbon monoxide detector. The sensor assembly also includes a base configured to be mounted on a structure, such as a wall or ceiling, and to receive the sensor. The sensor assembly further includes a wireless module located between the sensor and the base. The wireless module is configured to transmit position information. The wireless module may include one or more electrical contacts used to form at least one electrical connection between the base of the sensor assembly and the sensor. The wireless module may also include a printed circuit board having the contacts, wireless radio circuitry, an antenna, and other components. The printed circuit board could be substantially hidden from view when the sensor is attached to the base and the base is mounted on the structure.

Abstract: The members of a multi-processor communication system can be loaded with a common set of control programs. Subsequently, the functionality of the various processors can be specified by providing linking information to the respective processors. The linking information specifies which control programs, in which order, are to be executed by a respective processor. Processors can be associated with or bound to a respective system using encrypted control codes. The functional integrity of one or more modules at a respective processor can be verified.