1、 Smoke alarms can be divided into two types based on information transmission methods: wired and wireless, from the detector to the host. Most wired alarms are networked and require an external power supply, but can be linked with other systems, such as sprinkler and alarm systems. Once an accident occurs, they can be immediately linked and processed, and are mostly used in supermarkets, office buildings, and other places.

而无线的则为独立式，主要使用电池，相比有线来说，安装更方便，不需要额外找电源插口，但需要定期 更换电池。目前一些智能烟雾报警器，增加了WIFI模块，即使是独立式也可以与同网络环境下的其他报警产 品联动。从安装角度来看，独立型大多为直接粘贴式，通过胶直接粘贴在天花板上即可。

The wireless version is independent and mainly uses batteries. Compared to wired versions, it is more convenient to install and does not require additional power sockets, but requires regular battery replacement. At present, some intelligent smoke alarms have added WIFI modules, which can even be independent and linked with other alarm products in the same network environment. From an installation perspective, most independent models are directly attached, which can be directly attached to the ceiling through adhesive.

二、烟雾报警器从使用的传感器可分为

2、 Smoke alarms can be divided into

离子烟雾报警器

Ionic smoke alarm

离子烟雾报警器有一个电离室，离子室所用放射元素一一锯241 (Am241),强度约0.8微居里左右，正 常状态下处于电场的平衡状态，当有烟尘进入电离室会破坏这种平衡关系，报警电路检测到浓度超过设定的阈 值发出报警。

The ion smoke alarm has an ionization chamber, where the radioactive elements used in the ionization chamber are sawn 241 (Am241), with an intensity of about 0.8 microcuries. Under normal conditions, it is in an equilibrium state of the electric field. When smoke enters the ionization chamber, it will disrupt this equilibrium relationship. The alarm circuit detects that the concentration exceeds the set threshold and sends an alarm.

它是在电离室内含有少量放射性物质，可使电离室内空气成为导体，允许定电流在两个电极之间的空气中 通过，射线使局部空气成电离状态，经电压作用形成离子流，这就给电离室一个有效的导电性。当烟粒子 进入电离化区域时，它们由于与离子相接合而降低了空气的导电性，形成离子移动的减弱。当导电性低于预定 值时，探测器发出警报。

It contains a small amount of radioactive material in the ionization chamber, which can make the air inside the ionization chamber a conductor, allowing a constant current to pass through the air between two electrodes. The radiation ionizes the local air and forms an ion current through the action of voltage, providing an effective conductivity to the ionization chamber. When smoke particles enter the ionized region, they reduce 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 emits an alarm.

光电烟雾报警器

Photoelectric smoke alarm

光电烟雾报警器内有一个光学迷宫，安装有红外对管，无烟时红外接收管收不到红外发射管发出的红外 光，当烟尘进入光学迷宫时，通过折射、反射，接收管接收到红外光，智能报警电路判断是否超过阈值，如果 超过发出警报

There is an optical maze inside the photoelectric smoke alarm, which is equipped with an infrared tube. When there is no smoke, the infrared receiving tube cannot receive the infrared light emitted by the infrared transmitting tube. When smoke enters the optical maze, the receiving tube receives infrared light through refraction and reflection. The intelligent alarm circuit determines whether the threshold is exceeded, and if it exceeds the threshold, an alarm will be issued

它是利用起火时产生的烟雾能够改变光的传播特性这一基本性质而研制的。根据烟粒子对光线的吸收和散 射作用。光电感烟探测器又分为遮光型和散光型两种。

It is developed based on the fundamental 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: blackout type and astigmatic type.

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