원문정보
초록
영어
Aiming at the increasing demand of the monitoring of mechanical vibration signals, by improving the existing Sensor Monitoring Network, a low-power wireless sensor network is designed. The data transmission efficiency is increased by using the compressed sensing (CS) technology to compress the mechanical vibration signals of the devices monitored by the network. To realize real-time processing of monitoring signals, the FPGA+DSP architecture is treated as the core of the equipment processing the mechanical vibration signals of wireless sensor network. The modified designs of the hardware circuit and logic circuit with regard to the data collection, sampling, transmission, processing and the store section are introduced initially. Further, the effects of the improved Sensor Monitoring Network are tested by the experimental study on the rotating equipment. The results show that the real-time processing can be well implemented and the power can be cut down to a certain degree.
목차
1. Introduction
2. Overall Hardware Design of Wireless Sensor Monitoring Network(WSMN)
3. Hardware Design of a Monitoring Terminal
4. Algorithm of Vibration Signals Compressive Sensing
4.1. Sparse Decomposition of Mechanical Vibration Signals
4.2. Linear Measurement of Sparse Signals
4.3. Reconstruction of Sparse Signals
5. Design of Mechanical Vibration Signal Processing Device
5.1. Design of the FPGA Module
5.2. Design of the DSP Module
5.3. Design of the Control Module
5.4. Design of the Power Module
6. The WSMN System Spot Test
7. Conclusion
Acknowledgements
References