Research on Control System of Ring Pump Type Foam Mixing Device for Fire Truck
The commonly automatic adjustment foam mixing device has some disadvantages such as complex operation,poor control effectiveness and control precision.A control method of negative pressure ring pump type foam mixing device based on neural network PID algorithm is proposed,and a set of foam proportioning control system for fire trucks is designed on this basis.A reasonable foam mixing system is analyzed and designed.A human-computer interaction interface is designed.The PLC controller can automatically realize the injection of the foam and water mixture according to the operation command and the vehicle's status.The neural network PID algorithm is used to control the opening of the foam suction proportional valve to achieved accurate control of the foam proportion of the foam mixture.The experiment proves the system can realize one key operation and automatically control the foam fire truck to output stable foam mixed solution with a mixing ratio of 3％～6％,and the control precision exceeds the national standard.
fire trucknegative pressure ring pump typefoam rationeural network PID algorithm
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