基于虚拟仪器技术的超声波导盲系统的研制

Development of Ultrasonic Guidance System for the Blind Based on Virtual Instrument

超声波非常适合应用于导盲系统。本文构造了一种基于虚拟仪器技术的超声波导盲系统研究平台。我们获得障碍物的距离信息和超声回波的强度信息,进行音频调制,向盲人提供更加丰富的信息。本文从系统组成、软硬件设计等方面阐述了该虚拟仪器平台。

Ultrasonic sensors are optimal to the guidance system for the blind. A research platform of ultrasonic guidance system for the blind based on the virtual instrument technology was built. The system acquired the distance information of obstacles as well as the power of reflected ultrasonic, and informs the blind with modulated audio signal. In this paper, the virtual instrument on the aspects of the system constitution and designs of hardware and software were studied.