嵌入式非特定人车载电器声控终端系统的研制

Development of embedded speaker-independent voice control terminal system of in-vehicle devices

文章提出一种基于HMM算法的嵌入式非特定人车载电器本地语音控制终端设计方案,并以内核是ARM11嵌入式微处理器S3C6410A为车载电器主控平台,采用基于LD3320的语音识别模块和TFT-LCD显示终端,以Linux2.6.38和Qt4.6.3,为开发平台,设计并完成了非特定人车载电器语音控制系统样机,实现了非特定人语音指令识别和对音响、空调、车灯、车窗、雨刷等车载电器的实时控制,以及在显示终端上实时显示操作结果等功能。在样机上进行非特定人语音指令识别率测试实验,结果表明,系统具有识别率高、实时性好、显示界面友好、可扩展性强等优点。

A design scheme of embedded speaker‐independent local voice control terminal of in‐vehicle devices based on HMM algorithm is presented .The embedded processor S3C6410A with ARM11 core is used as main controller of in‐vehicle devices ,speech recognition module is based on LD3320 ,and TFT‐LCD is used as display terminal .On the development platform of Linux2.6.38 and Qt4.6 .3 ,a prototype of the speaker‐independent voice control terminal system of in‐vehicle devices is designed and implemented ,the prototype realizes the recognition of speaker‐independent voice command ,the real‐time control of air‐conditioner ,audio ,vehicle’s lights ,vehicle’s windows ,windshield wipers and other in‐vehicle devices ,and the real‐time display of operating results on system terminal screen and other functions .Finally ,the recognition rate test of speaker‐independent voice command is performed on the prototype system ,the experimental results show that the system has many advantages such as high recognition rate ,good stability ,friendly display interface and good scalability .