An object herein is to provide a fire alarm system which is capable of performing cable-deterioration diagnosis on a cable even if it is connected to a communication input type sensor. The fire alarm system includes: a sensor to which a communication signal to be used for detection is inputted intermittently; an input circuit unit for causing a current for measuring an impedance, to flow to the sensor constantly in a manner superimposed on the communication signal to be used for detection; a signal processor for measuring the impedance in a communication off-period of the communication signal; a storage in which a threshold value for the impedance is stored, the threshold value serving to determine deterioration of a cable connected to the sensor; and a controller for diagnosing, when the measured impedance exceeds the threshold value, that the cable connected to the sensor is deteriorated; to thereby perform cable-deterioration diagnosis.

A system for enabling one person testing and remote control of a fire control panel and generating text-to-speech audio during a walkthrough test of fire alarm system is disclosed. Typically, a technician interacts with a simulated interface displayed on the display of the mobile computing device. In response, commands are generated and sent to the control panel to cause the control panel to perform requested actions. The control panel then sends updated control panel user interface displayed information to the mobile computing device reflecting technician entered commands. Testing of the detection devices on the fire control panel generates event data that is sent to the mobile computing device, which receives the event data and enables a technician to select filtering options. The event data are then parsed to identify keywords and text-to-speech audio is generated for the filtered event data.

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, devices, and systems for an unmanned system (US) for smoke detector testing are described herein. In some examples, one or more embodiments include a test kit, a processor, and a memory having instructions stored thereon which, when executed by the processor, cause the processor to perform a test procedure on a projected beam smoke detector in a facility using the test kit and communicate a result of the test procedure to a smoke detector network associated with the facility.

Devices, methods, and systems for a self-calibrating fire sensing device are described herein. One device includes an adjustable particle generator and a variable airflow generator configured to generate aerosol having a particular particle size and optical scatter properties at a controllable density level, a first transmitter light-emitting diode (LED) configured to emit a first light that passes through the aerosol, a second transmitter LED configured to emit a second light that passes through the aerosol, a photodiode configured to detect a scatter level of the first light that passes through the aerosol and detect a scatter level of the second light that passes through the aerosol, and a controller configured to calibrate a gain of the photodiode based on the detected scatter level of the first light, the detected scatter level of the second light, and the controllable aerosol density level.

An improved fire detector test device and methods for conducting field sensitivity and functionality testing of a fire detector in-situ are provided. The test device can include ambient condition or stimulus generating devices, and a programmable processor, wherein the programmable processor can identify information about a detector under test, wherein the programmable processor can obtain a configuration file based on the identified information about the detector under test, wherein the configuration file can identify a combination, level, or rate of a plurality of stimuli that cause an alarm in the detector under test, and wherein the programmable processor can execute the configuration file to cause the ambient condition or stimulus generating devices to generate and emit the plurality of stimuli in the combination and at the level and the rate identified in the configuration file.

The system and method provide for the monitoring and trending the rate at which fire detection devices get dirty. This information is used to determine which devices are clogged or getting clogged and to establish that the chambers are open to air flow because they are accumulating dirt over time. Air flow through the detection chamber is proven using this analysis. Further self-testing is also employed for the fire detection devices by including modules that simulate the smoke interference with the light. This can be accomplished in two ways. In one example, light from the chamber light source can be reflected toward the scattered light photodetector to simulate alarm conditions. In another example, an additional chamber light source can be added to the detection chamber that can generate light to simulate alarm conditions.

A system and method for testing fire detection and fire annunciation/notification devices of a fire alarm system includes a central operations system, which provides a link between a control panel of the fire alarm system and a mobile computing device operated by a technician. One or more wireless nodes create a mesh network between the control panel and a testing computer. Then, during a walkthrough test, the on-site technician activates fire detection or fire annunciation devices of the fire alarm system and the activated devices signal the control panel and event data are generated. Event data from the control panel are sent to the central operations system via the mesh network. The central operations system sends the event data to a mobile computing device operated by the technician. The on-site technician is then able verify that the devices are physically sound, unaltered, working properly, and located in their assigned locations.

Systems and methods of increasing the efficiency and accuracy of a walk test in a fire alarm system are provided. Some methods can include receiving one or more walk test result signals from a system in a region, the signals indicative of one or more triggered input devices in the system and one or more activated output devices in the system, identifying one or more output devices in the system configured to be activated responsive to the one or more triggered input devices, comparing the activated output devices to the output devices configured to be activated, and transmitting a signal indicative of results of the comparing. Additionally or alternatively, some methods can include visually displaying or audibly emitting an indication of the results of the comparing.

Methods, systems, and apparatus, including computer programs encoded on a storage device, for using a drone to test a sensor. In one aspect, the method includes actions of detecting a message (i) broadcast by the drone and (ii) indicating that the drone is going to administer a test of a sensor, determining, by the monitoring system and based on the message and (i) sensor data generated by the sensor in response to the administration of the test, by the drone, within a predetermined period of time of the message or (ii) a lack of sensor data generated by the sensor in response to the administration of the test, by the drone, within a predetermined period of time of the message, whether the sensor is functioning properly, and in response to a determination that the sensor is not functioning properly, storing data indicating that the sensor is not functioning properly.