机动车尾气中一氧化碳检测的硬件设计

Hardware Design of Carbon Monoxide Detection in Motor Vehicle Exhaust

本文针对机动车尾气中一氧化碳的检测,提出了一种一氧化碳检测系统的硬件设计方案。该方案以STM32为处理核心,利用双路比较信号处理电路,使得模拟信号更准确的传送到单片机,以RS232串行通信协议为基础,设计了PC机与一氧化碳检测之间的通信,启用光源脉冲信号发送数据,通过上位机实时监测结果。

In this paper, aiming at the detection of carbon monoxide in automobile exhaust, a hardware design scheme of carbon monoxide detection system is proposed. The program to STM32 as the core of the processing, the use of dual comparison signal processing circuit, making the analog signal is more accurately transmitted to the microcontroller to RS232 serial communication protocol as the basis, designed PC and carbon monoxide detection communication between the start pulse light source Signal transmission data, through the host computer real-time monitoring results.