Smoke sensor in the hotel fire auto-alarm system (1)

The hotel is for the domestic and foreign visitors, accommodation, meals and held a variety of meeting and banquet venues.

Modern hotel in general have all-in, comprehensive feature set for dining, lodging, entertainment, shopping, it is easy to cause a fire. Automatic fire alarm system, for the early detection of fire and the fire early in the fight, maximize minimize fire casualties, economic losses and negative social effects play an important role.

1. system architecture simplifies design

Automatic fire alarm system is mainly composed of triggers, fire alarm equipment, as well as coordinated control system, etc.

2. trigger parts

In the automatic fire alarm system, automatic or manually generate fire alarm signal devices, including manual alarm button and fire detectors.

Manual alarm button is manually produced fire alarm signal devices, fire detector is able to fire parameters (such as smoking, temperature, light and flame, gas concentration, etc.) and automatically generates the fire alarm signal device. For a hotel building, in order to accurately forecast the fire location to minimize the false positives, selection of the detector smoke detector and heat detector to form regional fire detector networks. In-room bedroom, study room, restaurant, reception room with buzzer base detectors, in-room any range detector to control room issued fire alarm signal simultaneously triggered buzzer beeps, reminder is sleeping or working state guests quick evacuation.

1) smoke detector

Smoke fire detector is the use of a small smoke sensor response in its surrounding neighborhood atmosphere of combustion and/or pyrolysis smoke aerosol (solid or liquid particles) of a fire detector.

General ion sensing and photoelectric smoke detector. This system adopt photoelectric smoke detector. Photoelectric smoke detector has a smoke detection room, inside there is a light and a PC components. Light rays usually does exposure to the PC component, but when there is smoke enters the light scattering in the smoke generation, thus some rays to the PC component, smoke more dense, scattering to the PC component of light on the more sensitive components and optical signal is converted to an electrical signal is output fire controllers.

2) thermal detectors

In the early stage of fire, use thermistors to probe fires when an effective means.

Temperature sensor-fire detectors can according to their principle is divided into fixed temperature fire detector, differential temperature fire detector and fixed temperature detector. This system adopt air pipelines-differential temperature detector. It consists of air hose and membrane cartridges, and circuit parts, slow when the ambient temperature changes, an air tube air from thermal expansion, from the film cartridge of the escape of air leakage holes, so it does not promote the ripple tablet, electric contact will not be closed when the ambient temperature rises rapidly, air tube air from thermal expansion rapidly, from the film cartridge escape gas leakage holes, increased pressure within the membrane cartridges, promote ripple Tablet displacement, make contact closed, resulting in a fire alarm signal.

3. fire alarm system

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