Smoke and fire alarm system of China railway high-speed train

Abstract

A smoke and fire alarm system of a China railway high-speed train comprises a power source, a network control system located in a master control room and independent smoke and fire alarm subsystems arranged in carriages, wherein the network control system is provided with a fire protection circuit, each smoke and fire alarm subsystem comprises a controller connected with the power source and a smoke and fire detector connected with the power source, the controllers are connected with the network control system, each controller comprises a microprocessor, each microprocessor is connected with an input unit, an output unit and two CAN transceivers, each microprocessor is provided with two CAN bus interfaces, the number of the smoke and fire detectors is larger than one, the smoke and fire detectors are connected with one another in series through CAN buses, the first smoke and fire detector in the smoke and fire detectors connected in series is connected with the two CAN bus interfaces on the corresponding controller, and the last smoke and fire detector in the smoke and fire detectors connected in series is connected with the two CAN bus interfaces on the corresponding controller. Each smoke and fire detector is of a multi-layer circuit board structure and comprises a microcontroller, a smoke sensor, a linear heat detector and two CAN transceivers, and the smoke sensor, the linear heat detector and the two CAN transceivers are connected with the microcontroller.

Description

technical field [0001] The invention relates to a fire detection and alarm system, in particular to a pyrotechnic alarm system applied to high-speed EMUs. Background technique [0002] The high-speed EMU is a very complex and high-speed manned vehicle. It is loaded with electrical equipment with different functions, and a large number of wires and cables are laid. Moreover, the transportation environment is small, densely populated, and difficult to evacuate and rescue. If a fire occurs, if it is not discovered in time and corresponding measures are not taken, it will cause greater casualties and economic losses. Therefore, it is very necessary to invent a fire and fire alarm system that is applicable to high-speed EMUs, and can detect smoke early and accurately predict it. [0003] Traditional fire alarm systems include smoke-sensing, temperature-sensing, and light-sensing types, which judge the occurrence of a fire by sensing changes in smoke concentration and temperature...

AI Technical Summary

Problems solved by technology

[0003] Traditional fire alarm systems include smoke-sensing, temperature-sensing, and light-sensing types, which judge the occurrence of a fire by sensing changes in smoke concentration and temperature; fire alarm control systems are multi-line, bus-type, and intelligent; but The multi-line system has a single function, and the traditional bus system has poor anti-interference performance. The multi-functional intelligent composite fire alarm system is the development direction of the fire alarm system.

Images