Dual-Chip Guide Blind Device Based on STC89C51 and STM32

Abstract

The paper introduces a kind of dual-processor guide blind device based on chip STC89C51 and STM32. The STC89C51 single-chip microcontroller as the main controller, with an integrated ultrasonic module, calculates obstacle distance while achieving voice broadcast. STM32 single-chip microcontroller serially receives GPS module data to assist the main chip in completing GPS positioning and reduces the system response time by using dual processors while realizing the essential functions of the guide blind instrument. The reliability and practicability in the guide blind of the dual-chip device are verified by testing and analyzing the ranging error, system response time, and position offset rate on the dual-processor and the emergency program.