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Industry NewsHow does the smoke detector work
Time: 2018-11-23 View: 2127
The function of smoke detector is: in the initial stage of burning and generating smoke, it can automatically send out fire alarm signal, so as to extinguish the fire before the disaster.
1, by monitoring the concentration of the smoke to realize the fire prevention, household smoke alarm internal adopts the ion type smoke sensor, ion type household smoke alarm is a kind of advanced technology, stable and reliable work of the sensor, is widely applied to various kinds of fire alarm system, the performance is far better than that of gas sensor resistance class fire alarm.
2. The domestic smoke detector has americium 241 radiation source in the internal and external ionization chamber. Positive and negative ions generated by ionization move to positive and negative electrodes respectively under the action of electric field. Under normal circumstances, the current and voltage of internal and external ionization Chambers are stable. Once there is smoke escaping from the external ionization chamber, which interferes with the normal movement of charged particles, the current and voltage will change, and the balance between the internal and external ionization chamber will be destroyed. Therefore, the wireless transmitter sends out a wireless alarm signal, notifies the remote receiver host, and sends out the alarm information.
3. Photoelectric smoke detector is also a point-type detector. The working principle of photoelectric smoke detector is developed by using the basic property that smoke generated during fire can change the propagation characteristics of light. According to the absorption and scattering of light by smoke particles. Photoelectric smoke detector is divided into two types: shading type and astigmatism type. According to the different access mode and battery power supply mode, it can be divided into networked smoke sense, independent smoke sense, no linear smoke sense.
1, by monitoring the concentration of the smoke to realize the fire prevention, household smoke alarm internal adopts the ion type smoke sensor, ion type household smoke alarm is a kind of advanced technology, stable and reliable work of the sensor, is widely applied to various kinds of fire alarm system, the performance is far better than that of gas sensor resistance class fire alarm.
2. The domestic smoke detector has americium 241 radiation source in the internal and external ionization chamber. Positive and negative ions generated by ionization move to positive and negative electrodes respectively under the action of electric field. Under normal circumstances, the current and voltage of internal and external ionization Chambers are stable. Once there is smoke escaping from the external ionization chamber, which interferes with the normal movement of charged particles, the current and voltage will change, and the balance between the internal and external ionization chamber will be destroyed. Therefore, the wireless transmitter sends out a wireless alarm signal, notifies the remote receiver host, and sends out the alarm information.
3. Photoelectric smoke detector is also a point-type detector. The working principle of photoelectric smoke detector is developed by using the basic property that smoke generated during fire can change the propagation characteristics of light. According to the absorption and scattering of light by smoke particles. Photoelectric smoke detector is divided into two types: shading type and astigmatism type. According to the different access mode and battery power supply mode, it can be divided into networked smoke sense, independent smoke sense, no linear smoke sense.
