Application Research On Real-time Status Monitoring And Faults Diagnosis System That Based On DSP

The paper puts forward preliminary scheme of equipment registration on the base of commerical test scheme of the status monitoring & faults diagnosis of N - S Crash-Grind Machine. In the scheme we adopt double CPUs system structure. The DSP chip is used to process data and the MCU is used as peripheral equipment controller and I/O interface processor. The scheme optimizes the architecture and makes the system better to satisfy the actual operation. And we design relevant software to assure real time condition monitoring of N-S Crash-Grind Machine.First, we make relevant alterations on the hardware design aimed at the defects of commerical test scheme. The system is yet divided into signal acquisition module, signal processing module, interactive module and data communication module. But we make change on the choice of element. Especially we adopt the 16-bit fixed DSP processor TMS320VC5402 and the 80C51 on the host-slave system. So the TMS320VC5402 and 8051 can sufficiently exploit the particular of each and achieve the distinct functions of the system, C5402 is used as the digital signal processing core, the 80C51 is used to realize I/O control function. So CPUs can be made full use of advantages and system can better accomplish functions of every module.Secondly, we chiefly accomplish the module of digital signal processing except for modules such as communication module and interactive module on the aspect of software design. The data after A/D sampling will be extracted spectrum characteristic by the FFT. Then signal will be processed by the IIR software wave filter and the self-adaptive software wave filter to filter noise. In the paper, the IIR wave filter theory, self-adaptive filtering theory and Fast Fourier Transforms (FFT) theory are detailed introduced. The correlative arithmetic, the imitation realization in the C language or MATLAB, the relevant problems in the TMS320VC5402 DSP realization of correlation algorithm and the questions should be paid attention to are introduced. We also complete the concrete arithmetic compare between DSP program and imitation program.The knowledge on the aspect of Digital Signal Processing and the development on the mechanical failure are introduced in the paper.