Design and realization of online monitoring system for blade condition of mixture machine based on bluetooth

It is very important for mixture machine to make real-time pressure monitor of blade condition in order to ensure the quality of product and the safety of producing course. However, it is difficult to measure this pressure by using wire-method. Thus it is urgently required to develop the wireless monitoring system. In this paper, an on-line monitoring system by using the Bluetooth wireless transmission technology is designed and realized. According to the structure of mixture machine, several pressure sensors are fixed on the two blades which are the solid blade and the hollow blade respectively. The multi-channel switch, instrument amplifier and A/D converter are used to process the output signals of all pressure sensors. These signals could be acquired and transmitted by the Bluetooth acquisition module. Moreover, the Bluetooth module on the wall of mixture machine is utilized to receive these signals and to transmit them to the outside main controller. The real-time data acquisition of the blade condition is implemented by using the communication mode of one master and two slaves. This system has been tested successfully in the lad, the rationality and the feasibility is verified simultaneously.