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What on earth is the smoke alarm used for?
2021-08-02

In life, we often encounter all kinds of sensors. These sensors can help us identify and detect various potential hazards such as smoke, noise, and water flooding.
And it is converted into an electric signal to give an alarm in time, so as to avoid the oc
In life, we often encounter all kinds of sensors. These sensors can help us identify and detect various potential hazards such as smoke, noise, and water flooding.
And it is converted into an electric signal to give an alarm in time, so as to avoid the occurrence of disasters.
The following will focus on the commonly used smoke sensors.


Smoke sensor, also known as smoke alarm or smoke detector, can detect the smoke generated in fire.
Photoelectric smoke sensing devices are used inside, which can be widely used in shopping malls, hotels, stores, warehouses, machine rooms, houses and other places for fire safety detection.
The smoke sensor has a built-in buzzer, which can make a strong sound after alarm.

From the internal principle, the smoke alarm realizes fire prevention by monitoring the concentration of smoke. The internal smoke alarm adopts ionic smoke sensor. It is a kind of sensor with advanced technology and stable and reliable operation. It is widely used in various applications. In this kind of fire alarm system, the performance is far better than that of gas-sensitive resistance fire alarms. It has a radioactive source americium 241 in the inner and outer ionization chambers, and the positive and negative ions produced by ionization move to the positive and negative electrodes under the action of the electric field. Under normal conditions, the current and voltage of the inner and outer ionization chambers are stable. Once there is smoke escaping outside the ionization chamber. Interfering with the normal movement of the charged particles, the current and voltage will change, destroying the balance between the inner and outer ionization chambers, so the wireless transmitter sends out a wireless alarm signal to notify the remote receiving host to transmit the alarm information.
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