The Design And Experimental Study Of A Kind of Speech Instruction Control System Prototype of Manned Spacecraft

Abstract

The application of speech instruction control system in man machine interface of the manned spacecraft can enrich the intelligentization of the man machine interface and lighten the operation load of cosmonauts. Speech recognition integrated with speech synthesis constructs Speech Instruction Control System (SICS). The design of a kind of Speech Instruction Control System (SICS) prototype is presented in this paper. The 32 bit embedded system is adopted as the hardware core, while the middle layer is embedded Linux. Outside the middle layer is the application software shell. The development and experimental study on the SICS prototype has been carried out. Under the 100Mbps fast switch Ethernet and WINDOWS 98 OS environment, a simplified Chinese SICS bas been realized. In the system, a broadening endpoint Dynamic Time Warping (DTW) algorithm is applied which implements speaker-dependent rapid speech recognition and has the adaptive performance to process the tiny diversification of the speech speed. The UDP protocal is adopted to implement the real time transmission of the recognition result code of speech commands. The SICS prototype have been also realized in Linux Redhat 7.0. It is concluded from the experiment that the SICS prototype is feasible. There are several aspects of the problems pointed out in this paper for the SICS prototype to be applied in man machine interface of the manned spacecraft.