Application Of Embedded Speech Recognition & Control Technique In Intelligent Home Systems

With development of the technology and improvement of living standards, people ask for a higher demand in domestic environment. In such a case, intelligent home system has become an important research topic in this field. Voice is the most natural interactive mode of human being, so the application of using speech recognition and control technique to control the home appliances has become an important part of the intelligent home research.Basing on the Microsoft Speech SDK Speech development platform, the thesis studied integrates the voice recognition technology in Windows XP Embedded, a kind of embedded operating system, to build a smart home system and then realize the voice control of household appliances.Major jobs are as follows:The completion of the design for the intelligent home control system, which is based on the speech recognition technology. The system composes of software and hardware parts. PC achieves the acquisition, recognition of the voice signals, and handles these signals, then issues Corresponding action commands. Through a serial control network based on serial communication, people can control the equipments with standard Interface, realizing the remote control of household appliances.Research on the voice recognition technology. After some analysis and comparisons, the Microsoft Speech SDK development platform based on HMM recognition algorithm is adopted. This identification method has a high recognition accuracy, can realize the seamless connection to operating system expediently, and has the advantages of easy call.The application of the Embedded System (Windows XP Embedded) in Intelligent Home System . The reserch also designs the key technologies of the system configuration, voice-drive, etc. The customized operating system can match speech recognition software packages well, and with low hardware configuration requirements, it helps to reduce system cost.This system constructs the implementing structure by using Single Chip Micyoco (SCM), and can communicate with PC reliably. Still there are complex control functions such as infrared remote control, but with low cost.The research completes application design by using Visual Programming, with friendly interface, expanded functionality. New functions and control equipments can be increased conveniently.The Intelligent Home Control System researched in this thesis, can achieve the control of household appliances effectively, with convenient installation, low-cost, practical. And the transformation of the original household control system can be conveniently finished .The methods and techniques researched in this thesis can be applied in other related fields extensively.