Design of ARM-based human-machine interface of plastic injection blow molding machine

This paper designs a plastic blow molding machine monitor system which takes ARM7 embedded processor as core and takes CAN bus as communication system. By analyzing the Human-machine interface system requirements, hardware use LCD screen, touch screen and keyboard as man-machine interface display and input device, use the LPC2478 with ARM7 microprocessor, large capacity memory and CAN communications interface circuits as man-machine interface control device. In software design, firstly μC/OS-II embedded operating system is transplanted to the ARM core to achieve real-time multi-task switching. Secondly μC/GUI is transplanted to display graphics and text. Write man-machine interface application program task-units. Finally LPC2478 connects with CAN bus controller CTM8251T to achieve communication between the modules. The injection blow molding machine embedded human-machine interface is completed.