Train smoke alarm communication method based on independent module combination 3U case structure

Abstract

The invention relates to a train smoke alarm communication method based on an independent module combination 3U case structure, and the method comprises the steps: recognizing a carriage signal through an IO board card external address line, and extracting the detector configuration; enabling a detector to collect temperature information and smoke and thick fog information, and transmitting the information to a CPU board card for processing; enabling the CPU board card to judge the collected information, and outputting alarm information; enabling the CPU board card to transmit alarm information to an HMI display screen of a driver's cab after alarm; enabling the IO board card to cut off the signal output of a vehicle safety loop, transmitting the alarm information to the HMI display screen of the driver's cab, and enabling a red alarm indicating lamp of a DISP board card to be turned on; and enabling a DS board card, an Enet board card and a wireless board card to collect, store and upload the temperature information, the smoke and thick fog information and alarm information. When the detector communicates with a CAN board card, the method carries out the progressive addition or subtraction calculation of a CAN frame address of the detector through the forwarding mechanism of the detector. When the detector receives CAN frames with different addresses, the addresses of response frames are also different, thereby improving the configurability of a system.

Description

technical field [0001] The invention relates to the technical field of rail vehicle fire alarms, in particular to a communication method for train fire and fire alarms based on a 3U chassis structure combined with independent modules. Background technique [0002] The high-speed EMU is a very complex and high-speed manned vehicle, which is loaded with electrical equipment with different functions, and a large number of wires and cables are laid. Due to its small transportation environment, dense personnel, and difficulties in evacuation and rescue, Once a fire occurs, if it is not detected in time and corresponding measures are not taken, it will cause greater casualties and economic losses. Because there are too many monitoring positions in the train, and the number, position and function of the detectors required by each type of vehicle are diversified, the smoke and fire alarm communication system and method can no longer meet the needs of the rapid development of trains....

AI Technical Summary

Problems solved by technology

That is, in the above-mentioned alarm method, it is only pointed out that the wireless routing method is adopted between the alarm node and the network node, and multiple detectors are suspended on the same communication bus. Since the number of detectors on the train changes with the demand, each model, each The number of probes on the carriage is not fixed. If the above-mentioned method of multi-node communication through a bus is used, the address encoding of the probes needs to be performed on the software or hardware, that is, each probe on the bus needs to be set with its own address. This is used to identify the corresponding detectors, which is more restrictive for detectors with a large number of detectors and more flexible configuration requirements

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