基于超声相控阵技术的智能导盲装置设计

Design of Intelligent Guide Device Based on Ultrasonic Phased Array Technology

针对现有导盲系统存在的稳定性差、超声反射信号弱、障碍检测精度低、障碍定位性能差以及受环境因素影响大等不足,本文提出了一种基于超声相控阵技术,选用具有强大信号处理能力的STM32F103作为中央控制器件,利用拥有精确时间控制精度的EPM1270作为相控阵波束驱动控制器的智能导盲系统设计。本文对系统方案、硬件以及软件部分进行了设计,实现了前方道路障碍探测、道路危险智能识别以及正确向使用者报警等功能。该系统造价成本较低、操作简单、轻便、低功耗、便于携带、具有较高的实用性与性价比,可在导盲领域发挥重要作用。

Aiming at the shortage of the existing guide system stability difference, ultrasonic reflection of weak signals, obstacle detection accuracy is low, obstacle positioning poor performance and the impact of environmental factors, this paper puts forward a kind of ultrasonic phased array technology based on the selection of a powerful signal processing ability of the STM32F103 as the central control device, the guide system design by using precise time control accuracy EPM1270 as the phased array beam drive controller. The system scheme, hardware and software are designed, which can detect the obstacles in front of the road in real time, recognize the danger of the road ahead and warn the user correctly. The utility model has the advantages of low cost, simple operation, portability, low power consumption, portability, high practicability and cost performance, and can play an important role in the field of the guide.