Research On Hardware-in-the-Loop Simulation Of CAFS In Fire Vehicle

Nowadays,with the increasing number of high-rise buildings,fire protection has become a national topic of increasing concern,which is highly valued by the state.Therefore,the state has higher requirements for fire protection.It is the general trend to manufacture high-end intelligent fire-fighting equipment.The fire vehicle is an important part of the fire equipment,which plays an important role in the fire fighting operation.As the leader in the city fire,the fire truck in the city main station responds to the fire operation quickly in the first time,which plays an important role in the fire response.City main battle fire vehicle adopts compressed air foam system(CAFS),which has the characteristics of efficient fire fighting,energy saving and environmental protection.Because of its low cost and good market prospect,the development of highend city main fire fighting vehicle is an important development direction of fire fighting.At this stage,there are too many buttons on the control panel of the pump room of the city’s main fighting fire vehicle,so there are many problems in the fire rescue operation,such as tedious operation and misoperation.Therefore,this paper designs the fire control system of urban main battle fire vehicle to improve the intelligent level of urban main battle fire vehicle and to simplify the control panel.At first,a hardware-inthe-loop simulation platform for SP70 pipeline of fire vehicle is built to verify the one key control function of the controller.The controller is IMC-T3940,the port data acquisition uses PXI data acquisition platform,and the pipeline model is established by AMESim software according to the pipeline of the fire vehicle SP70.In this hardwarein-the-loop simulation test platform,the control signal is sent to the controller by the upper computer to open or close valves in the AMESim model.The intelligent one key control function is verified by the upper computer by monitoring the flow information of the model in real time.At the same time,the pressure loss simulation experiment of AMESim pipeline model is carried out,which provides a theoretical basis for making a reasonable control mode.Then the fire control system of the fire vehicle is designed: the overall state of the fire-fighting system is monitored in real time through sensors such as the flow and pressure of the fire pipeline,the liquid level of the liquid tank and the pressure of the gas cylinder;also each pneumatic valve can be manually controlled through the visual interface that make the fire-fighting operation more flexible;and the real-time monitor of the fire-fighting system provides an effective state detection of the fire-fighting system;by adding the opening adjustment function to the traditional foam proportioning controller,the problem that the opening control can only be adjusted by the button is solved,and the opening size can be quickly adjusted to make the control more intelligent;the system also adds the one key operation function of the dry powder system that adds new functions to the city’s main fighting fire vehicle.Finally,the controller is installed and debugged on the fire vehicle prototype.The monitoring function of the fire control system has been tested,and the intelligent one button control function of class a foam system,B foam system and dry powder system has been tested.At the same time,the sensor data is calibrated and the function of the control system is tested.The controller IMC-T3940 has been formally used in the vehicle prototype.There are 66 figures,17 tables and 83 references in this thesis.