Audio Signal and Troubleshooting System Based on Wireless Sensor

摘要

To explore the application of audio signal in the troubleshooting system, a sound detection system wa s designed. The system consists of three parts: voice acquisition node, aggregation node and host computer monitoring software. Time protocol synchronization ( TPSN ) algorithm wa s used to realize the synchronization between nodes. The algorithm and the trilateration method we re applied to the system. The application s of the sound detection system in the field of fault sound source localization we re realized. Wireless sensor networks we re used in sound detection systems, which ha d many advantages. On the one hand, complicated wiring wa s avoided. It ha d the advantages of easy to set up and easy to move. On the other hand, some self-organizing and adaptive features in wireless sensor networks and some methods of synchronization and localization c ould be introduced. The whole system was more flexible and i ts application wa s more extensive. Using monitoring software, users can remotely access to the scene of the voice signal. The results show ed that the system ha d high transmission rate, stable operation and small positioning error. Therefore, it has good application prospects.