Aiming at problems that existing industrial human-machine interface（ HMI） is immobile and has poor flexibility

mobile industrial human-machine interaction system based on Android is designed. The BluetoothRS485 gateway module is designed to establish reliable data channel between Android smart devices and programmable logic controller（ PLC）. The Android-based software is developed to provide visual data monitoring and graphical control input that implements mobile and intelligent human-machine interaction system. It is implemented in a hot melt glue machine. Experimental results show that the system can display sensor data and modify parameters at any place around the machine

improve efficiency of industrial human-machine interaction.