Fire alarm equipment
AssigneeHochiki Corporation
InventorTetsuya Nagashima
Life of this patent
Estimating the term…
Abstract
A photoelectric smoke detector (14) connected to a signal line (12-1) drawn into a warning area from a receiver (10) transmits a fire signal including identification information of smoke caused in detection zones Z1 and Z2. In the detection zones, a sensor (18) for sensing a change of physical phenomenon other than smoke involved in fire is provided, and the sensor (18) is connected to the signal line (12-1) via a relay device (16). The sensor (18) is at least one of a CO2 sensor, a CO sensor, a fire sensor, and a heat sensor. A fire alarm control unit (48) of the receiver (10) causes an alarm to be given, when determining the identification information of the smoke by the photoelectric smoke detector (14) and a sensing value by at least one of the CO2 sensor, the CO sensor, the fire sensor, and the heat sensor.
Claims6
A fire alarm equipment for monitoring and alerting of fires in a warning area, the fire alarm equipment comprising:
- a photoelectric smoke detector that connects to a receiver and sends a fire signal containing identification information of the smoke that occurred in a predetermined warning zone;
- a sensor that is installed in the same warning zone as the photoelectric smoke detector and detects a change of a physical phenomenon other than smoke associated with a fire;
- and
- a fire alarm control unit provided in the receiver to determine the presence of a fire and output a fire alarm based on the identification information of the smoke by the fire signal from the photoelectric smoke detector and the detection signal from the sensor,
- wherein the fire alarm control unit of the receiver stores in advance a correspondence between a type of the warning zone and an interlocking control, and upon determining that a fire is present, performs the interlocking control corresponding to the type of the warning zone.
A fire alarm equipment for monitoring and alerting of fires in a warning area, the fire alarm equipment comprising:
- a photoelectric smoke detector that connects to a receiver and sends a fire signal containing identification information of the smoke that occurred in a predetermined warning zone;
- a sensor that is installed in the same warning zone as the photoelectric smoke detector and detects a change of a physical phenomenon other than smoke associated with a fire;
- and
- a fire alarm control unit provided in the receiver to determine the presence of a fire and output a fire alarm based on the identification information of the smoke by the fire signal from the photoelectric smoke detector and the detection signal from the sensor,
- wherein the photoelectric smoke detector comprises:
- a smoke detection unit that detects a first smoke detection value by receiving a light of a first wavelength and scattered light of the smoke by setting a first scattering angle, and detects a second smoke detection value by receiving a light of a second wavelength different from the light of the first wavelength and scattered light of the smoke by setting a second scattering angle different from the first scattering angle;
- and
- a detector control unit that identifies smoke based on the first smoke detection value and the second smoke detection value detected by the smoke detection unit, and transmits a fire signal containing the identification information of the smoke to the receiver.
A fire alarm equipment for monitoring and alerting of fires in a warning area, the fire alarm equipment comprising:
- a photoelectric smoke detector that connects to a receiver and sends a fire signal containing identification information of the smoke that occurred in a predetermined warning zone;
- a sensor that is installed in the same warning zone as the photoelectric smoke detector and detects a change of a physical phenomenon other than smoke associated with a fire;
- and
- a fire alarm control unit provided in the receiver to determine the presence of a fire and output a fire alarm based on the identification information of the smoke by the fire signal from the photoelectric smoke detector and the detection signal from the sensor,
- wherein the photoelectric smoke detector comprises:
- a smoke detection unit that detects a first smoke detection value by receiving a light of a first wavelength and scattered light of the smoke by setting a first scattering angle, and detects a second smoke detection value by receiving a light of a second wavelength different from the light of the first wavelength and scattered light of the smoke by setting a second scattering angle different from the first scattering angle, and
- a detector control unit that transmits a smoke detection value detection signal including the first smoke detection value and the second smoke detection value detected by the smoke detection unit to the receiver, and
- wherein the fire alarm control unit of the receiver identifies smoke based on the first smoke detection value and the second smoke detection value received from the photoelectric smoke detector.
Dependencies are inferred from the claim text.