The importance of smoke detector
Except for the factors of falling, smashing and burning to death due to external force, most of them are because
of the smoke and temperature at the disaster site led to death;
When the smoke containing a large amount of smoke is inhaled by personnel at the fire site, it will adhere to the
nasal cavity, mouth, and trachea, enter the bronchus, bronchiole, and small bronchus, and even spread into the
lungs and adhere to the alveoli, resulting in insufficient ventilation of the lungs and eventually suffocated.
Smoke is one of the important signs in the early stage of a fire. Smoke sensors are developed to detect smoke at
an early stage. smoke detector can find visible or invisible smoke.
smoke detector classification
Smoke detector can be divided into the following types according to usage:
1.Standalone smoke detector
The stand-alone smoke detector is called stand-alone photoelectric smoke detection alarm. It does not
require power supply from the panel. It comes with 9V or 3V smoke detector battery power supply with
high level sound Buzzer,and Standalone smoke detector change battery more easy ，smoke detector
chirping sound alarm when alarming. There is no other external output，Easy installation;
2.Network smoke detector
Compared with the standalone smoke detector, the network smoke detector can not self-powered,which needs
to be supplied by the fire alarm control panel. There is no built-in buzzer. The panel can supply power and reset it.
Wiring is 2 or 4 wires. It will make alarm and network to inform the people or department.It can connect with
the fire alarm control panel for larger number of points through network function.The network smoke detector
can be applied to house,buildings,etc. People can monitor it through the panel or PC.
Conventional Network smoke detector
Addressable network smoke detector
3.wireless smoke detector
The wireless smoke detector is similar to the combination of the above two, which called wireless network smoke detector with battery and buzzer. In addition to its own sound and light alarm when alarming, it will also communicate
with the panel or other wireless smoke output. Due to its communication distance or other wireless characteristics,
the application scale is limited;
Basic composition of smoke detector
1.Smoke detector shell
Different shapes are designed according to the development requirements of each company and customer, generally divided into upper cover, and middle cover.
2.Smoke Labyrinth (Smoke Chamber)
The smoke traps from different manufacturers with a different circuit, shape and designed, it have an integratedsmoke detector and a split smoke detector.
3.Circuit board
According to the respective design requirements, we have discrete components, useMCU smoke detector
4.Mounting the base
Protected area of asmoke detector
When the install height of a smoke detector between 6-12m
Its protected area is 80 square meters, and the distance between two smoke detectors in the same level should less than 10 meters ;
The space height reaches 6m:
The protection area of a smoke detector is 60 square meters for a general protection place, and the distance between two smoke detectors is less than 8 meters based on the area of a circle;
*(The above data are calculated on the same plane. If there is a retaining wall, it should be calculated separately)
*(Specific parameters should be based on "Code for Design of Automatic Fire Alarm System")
Connection of smoke detector
2 Wiring smoke detector diagram
4 Wiringsmoke detectordiagram
Smoke Detector base installation diagram
Smoke detector application place
Such as residential houses, shops, companies, important warehouses, etc., basically can be installed in many places;
