With Voice Recognition Capabilities Of The Wireless Network Node Switch Control System

The wireless networked trends of measurement and control with the capacity of speech recognition is a research target of the measurement and control system. In some cases, the measurement and control system that uses both speech recognition technology and wireless network technology is need and there is no other choice. This text briefly introduces the designation and realization of a node switch of wireless networks with the capacity of recognizing and understanding speeches, using ZigBee wireless network technology, which realized the interconnection and control of the network node. The main points of the research work are as follows:1. In terms of speech recognition theory, a emulation software of speech signal processing under the MATLAB environment was given based on the analysis of the speech recognition procedure and the signal process method.2. In terms of wireless network communication, advantages and disadvantages of ZigBee technology over its mates are given beside its introduction.3. On account of hardware designation, speech recognition circuits which is composed of power supply part and speech IO part, wireless communication circuits which is mainly CC2430,and peripheral circuits are provided.4. With respect to software, the designation, coding and debug of speech recognition module and wireless communication module are finished. Inμ'nSP IDE and IAR compiler environment for the debugging, completed software to realize a speech recognition function and wireless communication function.5. Above all, a prototype was manufactured. It was a wireless network node switch control system with the capacity of recognizing and understanding speeches. Its recognition rate, as expected, is up to 98%, and foresee a treasury value.