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Fire alarm system, also known as automatic fire alarm system, it is composed of trigger device, fire alarm device, fire alarm device and other auxiliary function devices, it has the ability to burn the smoke, heat, flame and other physical quantities in the early stage of the fire, through the fire detector into an electrical signal, transmitted to the fire alarm controller, and at the same time show the location of the fire, time, etc., so that people can find the fire in time, and take effective measures in time to extinguish the initial fire, Minimizing the loss of life and property caused by fire is a powerful tool for people to fight fire.
The signal line mainly refers to the line used to transmit sensing information and control information in the electrical control circuit. With the continuous progress of technology and application, the signal line has developed from metal carriers to other carriers, such as optical cables. Signal lines for different purposes often have different industry standards to facilitate standardized production and application.
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The water level signal line and the smoke detector line are generally not a line, the water level detection is generally an independent detection system, there will be a small host display in the monitoring room, and the fire alarm system is not a system.
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The water level is also monitored by the fire alarm host, which is monitored by the input module, and the 2 buses of the input module and the 2 buses of the smoke detector are the same way. When the water level is low, the water level detection thing will give a closed signal to the alarm input module, and the input module will report the action. The control center knows that module is defined, and when it is defined, it will deliberately describe and write that the water level is low.
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Hello, happy to answer for you! The signal line for fire smoke exhaust and smoke detector is not the same line. Fire alarm system, also known as automatic fire alarm system, it is composed of triggering pretending to laugh and excited, fire annihilation and disaster alarm device, fire alarm device and other auxiliary function devices, it has the ability to burn the smoke, heat, flame and other physical quantities generated by the fire detector into an electrical signal through the fire detector, transmitted to the fire alarm controller, and at the same time show the location and time of the fire, so that people can find the fire in time, and take effective measures in time to extinguish the initial fire. Minimizing the loss of life and property caused by fire is a powerful tool for people to fight fire.
Hope mine is helpful to you!
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There is not a single signal line for fire smoke exhaust and smoke detector.
There are two signal cables for smoke detector controller and smoke exhaust communication.
Two signal lines are not divided into positive and negative poles, it is forbidden to destroy the two signal lines short, although the wiring is not divided into positive and negative poles, but can not be directly short-circuited, as long as it is auspicious in the same circuit, the signal line can be connected casually, tree network can.
The installation of smoke detectors meets the following requirements: 1. The horizontal distance from the detector to the wall and beam should not be less than the horizontal distance around the detector rubber, and there should be no obstruction.3 The horizontal distance between the detector and the nearest side of the air supply outlet of the air conditioner should not be less than; The horizontal distance to the orifice of the porous air supply roof should not be less than When the detector is installed on the roof of the inner walkway with a width of less than 3m, it should be installed by Liangshanhui in Livable.
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There are two signal lines for communication between the smoke detector controller and the fire controller.
The two signal lines are not divided into positive and negative poles (it is forbidden to short connect the two signal wires, although the wiring is not divided into positive and negative poles, but can not be directly short-circuited), as long as it is in the same circuit, the signal line can be connected casually, and the tree network can be.
The installation of smoke detectors shall meet the following requirements:
1. The horizontal distance from the detector to the wall and beam edge should not be less than;
2. Within the horizontal distance around the detector, there should be no obstruction;
3. The horizontal distance between the detector and the nearest side of the air supply outlet of the air conditioner should not be less than; The horizontal distance to the orifice of the porous air supply roof should not be less than;
4 When installing the detector on the roof of the inner walkway with a width of less than 3m, install it in the habitable environment.
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In some products in the network with low power consumption, it acts as a power line + signal line, while on the high-power products in the network, due to the weak power supply capacity of the bus, it can only be used as a signal line, and then connected to the high-power power supply alone.
Because the functional capabilities of the fire bus are limited, some products with less power consumption, such as:
Smoke detectors, hand reports, these power consumption is small, do not connect the external power cord, directly use the fire bus power supply + plus communication, on two lines.
For some products with large power, such as sound and light alarms, floor displays, the power consumption is relatively large, it is only used for fire bus communication, and the power supply is provided separately nearby, and there will be a fire power supply with backup power near the equipment to provide additional power supply for the equipment in the fire division.
I don't know if it's clear... Draw a picture and see if you can understand it clearly.
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Many of the fire protection systems are bus system, which are connected hand in hand, so you can see only one line. Smoke and temperature sensitivity, power is definitely needed, and the alarm button is not. These need to be familiar with the product, and it will be naturally understood.
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