基于PID控制算法的热水器智能控制系统设计——语音识别系统设计

北京理工大学珠海学院2020届本科生毕业设计Design of Intelligent Control System of Water Heater Based on PIDControl Algorithm-Design of Speech Recognition SystemAbstractWith the development of the Internet of Things,big data and artificial intelligence,thereare higher requirements for voice recognition,which also means that the household productsin our lives are becoming more and more intelligent,entering all aspects of our lives,we asconsumers,The quality of life has been improved.The intelligentization of home applianceshas become a necessary trend in the development of the home appliance market.In order toachieve more humanity,save resources and provide more portable services,it is verynecessary to realize all-round information interaction in life!Electric water heaters,which areoften overlooked,have huge development prospects in terms of intelligent development.Inaddition to satisfying a certain degree of comfort,at the same time,it also hopes to achievevoice intelligence,but the existing water heaters on the market are mainly storage typeelectric water heaters and instant water heaters.Among them,the storage type electric waterheater is widely used,because its advantages are more in line with the requirements of homeinstallation,so this has a certain mass base for the replacement of products.Based on thestorage water heater,it has been improved and increased in function,combined with a voicerecognition system,mainly including the following content.According to the introduction of the main algorithms of speech recognition,after furtheranalysis,after understanding the principles of different algorithms,the operation difficulty ofseveral algorithms is compared,and combined with the main body of the design to select theappropriate algorithm.For the main body of the design,the storage type electric water heaterparticipated in the scheme design,introduced its structural design,related to speechrecognition,water temperature control and water level control,related adjustments,The algorithm based on dynamic time warping first extracts the voice content,uses thecomputer's sound card collection,digitizes and preprocesses the collected voice,and at thesame time,it is also crucial for the detection of voice endpoints.Feature extraction of speech