Design Of Smart Home Voice Control System Oriented To Traditional Home Appliance Networking

With the development of China's economy and the improvement of people's living standards,it is an inevitable trend that the traditional home living system changes to the smart home living system.Based on the research and analysis of the development of voice control system of smart home at home and abroad,this paper points out that there are still some deficiencies in the current smart home system that need to be improved.On the one hand,for the traditional household appliances,the current smart home system is lack of transition mode,which makes it difficult to network.Therefore,the consumers who choose the smart home system have to spend a huge cost to update the home appliances,which improved the use threshold of the smart home system,resulting in its slow development.On the other hand,for the construction of the future smart home model,the key point is to improve the understanding recall rate and response speed of intelligent voice control.However,the existing voice recognition system can not meet such needs,so it is necessary to optimize the design for the future.In view of the above two problems,this paper mainly finished the following work:First of all,considering the current demand of smart home,aiming at the problem of poor compatibility of smart home products,a voice control system scheme is designed,which can control the existing home appliances network.The smart home voice control system is divided into application layer,transmission layer,control layer and perception layer,and is designed according to the function of each layer.In the transmission layer,a smart home internet gateway based on ARM11 is designed.The gateway is equipped with Wi-Fi module and Ethernet module,which realizes the networking function of the internal Internet of things and the connection function of the external Internet.In the control layer,by the idea of distributed control,this paper designed the smart home secondary controller based on STM32.The traditional home appliances are controlled by network,and the sensor module isused to collect the indoor environment data.The hardware platform of voice control system in smart home is designed.Secondly,in order to meet the prospective need of smart home for voice control,this paper optimized the voice control system.In the part of building application layer cloud service platform,aiming at solving the problems of low recall rate and slow response speed of voice instruction understanding of existing smart home voice products,the voice cloud recognition method is adopted to improve the operation ability.in the aspect of voice recognition algorithm,the speech enhancement stage and speech recognition stage are optimized specifically.In the speech enhancement stage,the method of combining spectral subtraction and Wiener filter is used to ensure the speech enhancement effect and improve the processing speed.In the stage of establishing the recognition model,attention mechanism is used to optimize the existing RNN speech recognition model,which improves the speech recognition speed and the recall rate of speech instruction understanding.Finally,the reliability,response speed and recall rate of speech instruction recognition of the intelligent home voice control system are verified through the test of traditional home appliance networking scheme,speech enhancement algorithm and overall operation.It is proved that the smart home voice control system designed in this paper can satisfythe needs of the intelligent home in the transition based on the status quo,.At the same time,its speech recognition scheme can make the system meet the requirements of response speed and the recall rate for the future smart home on the basis of realizing the networking of traditional home appliances.