Research of the scheduling method for fieldbus network real-time information

The real time property of fieldbus network is very important to industrial control system, and the scheduling method of real-time information is an important factor that influences the real time property of fieldbus network. According to industrial real-time applications, a node produces a variety of information which have different requirements for real-time characteristics, the mixed service strategies scheduling method has been presented. This method makes the information scheduling process have the real-time property and without losing its flexibility. The results of simulation show that, compared with the traditional way of using a single service rule, the mixed service rule makes the transmission delay time of real-time information reduced by 50.00%~53.75%.