A method of testing a smoke alarm system including: receiving a first manual input via an input device of a mobile device from a user of the mobile device, the first manual input indicating that the user would like to initiate a test of the smoke alarm system including one or more smoke alarms, the one or more smoke alarms including at least a first smoke alarm; determining a time slot allocation, the time slot allocation indicating when each of the one or more smoke alarms should emit an alarm; transmitting the time slot allocation to each of the one or more smoke alarms, wherein each of the one or more smoke alarms is configured to activate the alarm in accordance with the time slot allocation; activating a first alarm on the first smoke alarm; and receiving a second manual input indicating that the user has heard the first alarm.

The present invention relates to a system for testing the availability of a detector for detecting smoke. More specifically, the present invention relates to a detector with a testing unit arranged to detect whether the detector has been covered, such that it is unable to perform its function as a smoke detector.

Methods and systems for performing a walk test for fire alarm systems using a mobile device are described herein. One fire alarm system, includes a system control panel fixedly positioned within a building for controlling a plurality of fire alarm system devices connected to the panel and positioned within the building, a mobile device wirelessly connected to the control panel, and a fire alarm system control application on the mobile device, wherein the fire alarm control system application gains access to the control panel and, therethrough, the plurality of fire alarm system devices and wherein the fire alarm control system application issues a command to a particular fire alarm system device of the plurality of fire alarm system devices to perform a particular test or maintenance function and the control panel relays the command to the particular fire alarm system device.

Methods, devices, and systems for an aspirating smoke detector device operational analysis are described herein. One device includes a memory, and a processor to execute executable instructions stored in the memory to receive operational information associated with an aspirating smoke detector device and generate, using the received operational information, an aspirating smoke detector device operational analysis including a real-time operational parameter associated with the aspirating smoke detector device, and a user interface configured to display the aspirating smoke detector device operational analysis.

Devices, methods, and systems for causing a self-testing fire sensing device to initiate a fire response are described herein. One device includes a user interface, a memory, and a processor configured to execute executable instructions stored in the memory to receive, via the user interface, a selection to initiate a fire response, receive, via the user interface, a selection of a self-testing fire sensing device to initiate the fire response, transmit a command to the self-testing fire sensing device to initiate the fire response, and receive a notification of a number of output events triggered by the initiation of the fire response by the self-testing fire sensing device.

A system for redundantly detecting a gas is provided. The system includes first and second series-connected gas sensors and a signaling module. If both gas sensors are functioning normally, the signaling module provides an alert when both gas sensors detect a predetermined gas concentration. If however any one of the gas sensors is experiencing a fault condition, the faulty gas sensor's alarm is shunted by operation of a fault relay, and the signaling module provides an alert when the non-faulty gas sensor detects a predetermined gas concentration. If both gas sensors are experiencing a fault condition, both gas sensors' alarms are shunted by fault relays, and an audible and/or visual alert is generated by the signaling module. Embodiments of the present invention are well suited for industrial facilities, manufacturing facilities, research and development laboratories, and other locations where unsafe gas concentrations may become present.

A system for redundantly detecting a gas is provided. The system includes first and second series-connected gas sensors and a signaling module. If both gas sensors are functioning normally, the signaling module provides an alert when both gas sensors detect a predetermined gas concentration. If however any one of the gas sensors is experiencing a fault condition, the faulty gas sensor's alarm is shunted by operation of a fault relay, and the signaling module provides an alert when the non-faulty gas sensor detects a predetermined gas concentration. If both gas sensors are experiencing a fault condition, both gas sensors' alarms are shunted by fault relays, and an audible and/or visual alert is generated by the signaling module. Embodiments of the present invention are well suited for industrial facilities, manufacturing facilities, research and development laboratories, and other locations where unsafe gas concentrations may become present.

A method for estimating a temperature of a motor of a pitch drive mechanism of a rotor blade of a wind turbine includes monitoring, via at least one sensor, an actual temperature and at least one additional operating condition of the motor during a normal operating period of the wind turbine. The method also includes storing, via a pitch controller, the monitored temperatures and the monitored additional operating conditions of the motor for the normal operating period. Further, the method includes determining a relationship between the monitored temperatures and the monitored additional operating conditions of the motor for the normal operating period. Thus, in the event that the sensor fails to operate, the method includes determining, via the pitch controller, an estimated temperature of the motor based on the relationship.

A method for estimating a temperature of a motor of a pitch drive mechanism of a rotor blade of a wind turbine includes monitoring, via at least one sensor, an actual temperature and at least one additional operating condition of the motor during a normal operating period of the wind turbine. The method also includes storing, via a pitch controller, the monitored temperatures and the monitored additional operating conditions of the motor for the normal operating period. Further, the method includes determining a relationship between the monitored temperatures and the monitored additional operating conditions of the motor for the normal operating period. Thus, in the event that the sensor fails to operate, the method includes determining, via the pitch controller, an estimated temperature of the motor based on the relationship.

Techniques for low power gunshot sensor testing are disclosed. An acoustic generator and an infrared generator are disposed in a housing. The housing encompasses the acoustic generator and the infrared generator. The housing covers the gunshot sensor. The acoustic generator and the infrared generator are used for testing a gunshot sensor. The infrared generator and the acoustic generator are coupled to an activation circuit. A switch is coupled to the acoustic generator and the infrared generator. The switch provides activation control of the acoustic generator and the infrared generator. The infrared generator includes a light source operating in the near-infrared (NIR) band. The light source operating in the NIR band provides testing for a gunshot muzzle flash sensor. The infrared generator includes a light source operating in the mid-infrared (MIR) band. The light source operating in the MIR band provides testing for a passive infrared (PIR) sensor.