Does the smoke sensor really need a lot of smoke to sense it?

On August 24th, 20 16, a fire broke out in a three-story building in Sanjiao Town, Zhongshan City. The 1 floor of the building is a small shop for office equipment, and the second floor is an office. When the incident happened, two residents were sleeping on the third floor. The smoke generated during the fire triggered an independent smoke alarm installed on the 1 floor. A resident was awakened by the alarm and went downstairs to check the situation, and found a fire on the 1 floor in time. The resident immediately woke up another resident and successfully escaped from the window. ?

One of the rescued residents said that he had installed an independent smoke detector as early as 20 12. Some time ago, he found that it was out of order and replaced it with a new one. Unexpectedly, fire came in handy. Independent smoke fire detection alarm: it is a smoke fire detection alarm, which can detect the smoke generated during the fire and give an alarm in time. It can be widely used for fire safety monitoring in Internet cafes, dance halls, cafes, leisure halls, houses and other places. It has radioactive source americium 24 1 in the inner and outer ionization chambers, and the positive and negative ions generated by ionization move to the positive and negative electrodes respectively under the action of electric field. ?

Under normal circumstances, the current and voltage of the inner and outer ionization chambers are stable. Once there is smoke, the ionization chamber outside will disappear quickly. If the normal motion of charged particles is disturbed, the current and voltage will change, which will destroy the balance between the inner and outer ionization chambers. So the wireless transmitter sends out a wireless alarm signal to inform the remote receiving host and send alarm information. Smoke sensors are widely used in urban security, residential areas, factories, companies, schools, families, villas, warehouses, resources, petroleum, chemical industry, gas transmission and distribution and many other fields.

"Independent fire smoke detection alarm" does not need wiring, and uses battery power supply. Once smoke appears at the beginning of a fire, it can give an alarm. With a smoke detector that can alarm, if you forget to turn off the fire when cooking, you will be reminded. When you sense smoke, it will emit a sound greater than 80 decibels, and send out an optical alarm to inform users of a fire and take timely measures.