The Design Of LabVIEW-based Robot Sound Localization System

Targeting technology is the field of intelligent robotics research hotspot. In recent years, robot technology of Acoustic caused great concern at home and abroad, and our relative rather late, the domestic research in this area, relatively few universities and research institutions, and to apply it little robot. In this paper, results and relevant reference materials have been based on research and design of a robot based on virtual instrument technology in sound localization system technology.This paper discusses the cross-square planar orientation quaternion model and target location equation; on the cross-correlation, adaptive algorithm and power spectrum of three types of delay are discussed and compared three types of delay algorithm, based on the interference of the system, algorithm accuracy, stability, comprehensive real-time requirements, select the application of generalized cross correlation method seeking the acoustic sensor to the target signal reception time difference, to gain a sound source of location information. Second, analysis of the sound card as the feasibility of data collection devices, as the robot sound source positioning system data acquisition hardware, the hardware, with open, you can upgrade the hardware to improve performance, low cost, reliable, very high cost Further application of National Instruments LabVIEW virtual instrument software for the software development platform for acoustic signal data acquisition, digital filtering, time and frequency domain analysis, seeking to achieve inter-related delay, implementation based on sound source localization equation targeting; modular design and object-oriented design methods, so that the system has good portability.Finally, in the interior and exterior of the experiment the system was verified. By a large number of experiments show that demand for the generalized correlation time delay estimation in theory and in practice totally feasible. Also confirmed the effectiveness of sound source localization system, and the results confirmed a high positioning accuracy. Sound source localization robot can meet the requirements.