Research On Distributed Monitoring System Of Rolling Mill Test-bed Based On MCU

The rolling mill is the critical equipment in Iron and Steel industry, and when it runs, heavy accidents often appear, which are difficult in explaining with statics when suffering from the load including deadweight, impulsive forces and so on. So it is necessary to build a set of condition monitoring system with perfect function and high reliability, in order to protect equipments from accident and maintain in advance. At present, there are a great deal of domestic condition monitoring systems which acquire signals by DAQ plugging in ICU. The ICU is far from the field and connected with signals from sensors directly, so the transmission line is long and difficult for wiring, and as a result the capability of anti-interference should be enhanced.In this system of the dissertation, MCU is chose to acquire signals and then a rounded monitoring of the unit can be implemented. Generally, the study is focus on two parts. In the first part, the overall scheme has been designed, the position and objects of monitoring have been established which include electrical parameter, vibration, temperature, rotating speed , energetic parameter and displacement; Also, a mixed architecture has been put forward by comparing several prevailing architectures nowadays, which has both virtues of B/S and C/S modules and an excellent flexibility for good adaptability to different users. It utilizes resource in client and server with a high limit and characterized with the cross-over through fire wall for a utilization of Web Service. The second part studies the problem of data acquisition as a basis of condition monitoring and mainly probes into the design of hardware and software of field nodal point for acquisition. As a core part of hardware, Microprocessor chip unit is used to acquire signals which brings on an advantage that the nodal point can be established near measuring points. So the transmission line is short and convenient for wiring, and the capability of anti-interference has been enhanced remarkably. Then the RS485 Bus is used to communicate between PC and MCU. During designing the software of PC, Multi-thread idea has been applied in signal accepting and handling for a higher efficient utilization for system resource.Finally in the dissertation, based on software engineering, a condition monitoring system of rolling mill test-bed, which has the characteristic of good transplantation and expansion, strong anti-interference, convenient operation, is developed on BCB6. 0 and will use for reference for further perfection and expansion.