General fire systems are divided into detection and control systems, water systems, and broadcasting systems. At present, commonly used smoke detectors can be roughly divided into ion type, photoelectric type, infrared targeting type, laser type, etc. Below, the manufacturer of the fire alarm system will provide you with specific information on each type of detector

The smoke and fire detector adopts a photoelectric sensor with a special structural design and is produced using SMD chip processing technology. It has the characteristics of high sensitivity, stability and reliability, low power consumption, aesthetics and durability, and convenient use. The circuit and power supply can self check and perform simulated alarm testing.

This product is suitable for fire alarm in homes, shops, dance halls, warehouses, and other places. The ignition process of a fire is generally accompanied by three combustion products: smoke, heat, and light. In the early stages of a fire, due to the low temperature, substances are mostly in the smoldering stage, resulting in a large amount of smoke. Smoke is one of the important characteristics of early fires, and smoke detectors are developed based on this feature, which can respond to visible or invisible smoke particles. It is a device that converts changes in smoke concentration at the detection site into electrical signals to achieve alarm purposes. There are several types of smoke detectors, including ion smoke detectors, photoelectric smoke detectors, and infrared beam smoke detectors.

Ionic smoke detector is a point type detector that contains a small amount of radioactive material in the ionization chamber. It can make the air inside the ionization chamber a conductor, allowing a certain current to pass through the air between the two electrodes. The radiation ionizes the local air and forms an ion current through the action of voltage, which gives the ionization chamber an effective conductivity. When smoke particles enter the ionization zone, they decrease the conductivity of the air due to their binding with ions, resulting in a weakening of ion movement. When the conductivity falls below the predetermined value, the detector issues an alarm.

The photoelectric smoke detector is also a point type detector, which is developed based on the basic property that the smoke generated during a fire can change the propagation characteristics of light. Based on the absorption and scattering of light by smoke particles. Photoelectric smoke detectors are divided into two types: shading type and astigmatism type. According to different access methods and battery power supply methods, it can be further divided into networked smoke detectors, independent smoke detectors, and wireless smoke detectors.

The infrared beam smoke detector is a linear detector, which is a fire detector that responds to the smoke parameters around a narrow strip within the warning range. The main difference between it and the previous two types of point type smoke detectors is that the linear smoke detector divides the beam transmitter and photoelectric receiver into two independent parts, which are installed in opposite positions when in use and connected by a beam in the middle. Infrared beam smoke detectors can be divided into two types: opposed type and reflective type.

Smoke sensitive fire detectors are suitable for installation in places that produce large amounts of smoke or are prone to smoldering after a fire occurs; It should not be installed in places with high smoke or fast ventilation speed.