基于STM32刑事审讯之心率检测设计与实现∗

摘要

According to the deficiency of the evidence in criminal trial, based on low power series of consumption SCM⁃STM32L series, this paper designs and implements criminal interrogation heart rate detection system with strong practicability. Whether the things confessed by the criminal are true or false is judged by heart rate change and this method can be regarded as criminal interrogation detection scheme. This paper introduces the overall design of the system in detail, systematic hardware design and systematic software design, finally uses LCD to display the results, implements real⁃time, continuous and reliable heart rate detection and demonstrates the good application prospect of this system in criminal interrogation field.%针对刑事审讯证据不足的缺陷，基于低功耗系列单片机（ STM32L）设计并实现一种实用性强的刑事审讯心率检测系统，根据心率的变化来判断犯人所交待的事情是否是真实意思的表达；详细介绍了系统总体设计、硬件设计、软件设计，最后对结果进行LCD显示，实现了对心率实时、连续、可靠的检测，展示了本系统在刑事审讯领域的美好应用前景。