作者：刘宝宇，程进，邹卓成，赵佳麒，常创创，姚宇军，李光东，王骏琦，周子肖，余兴，邹小平

单位：北京信息科技大学北京市传感器重点实验室，北京 100101

摘要：随着越来越多的儿童选择坐校车，儿童因滞留在校车内出现意外时有发生。为防止儿童滞留在校车内，设计了一种校车滞留儿童检测系统。系统采用STM32单片机作为控制模块，在校车的车门处安装了两组红外对管和一个数码管作为计数模块，在车内安装了人体热释电传感器和面式压力检测传感器作为检测模块，并以SIM900A为主要装置的报警模块。此系统在启动和停驻时都具有检测装置。通过实物模拟，此系统达到了要求。

关键词：防滞留；儿童；SIM900A；报警装置

中图分类号：TP277          

文献标识码：A           

文章编号：1006-883X(2020)02-0018-07

收稿日期：2019-12-04

 

摘要：旋转变压器作为一种精密角度传感器，可应用在环境恶劣的军工及高端工业领域，目前旋转变压器测角系统未能输出与光栅编码器兼容的ABZ三相脉冲接口信号，这限制了其应用。本文提出一种新型解码装置，以AD2S1210芯片构建传感处理单元与旋转变压器匹配后实现激励及模数信号的转换，随后再通过基于stm32微处理器的主控单元对模数转换后的数字信号进行融合处理成角度值，最后再经由基于逻辑门电路以及AM26LS31芯片构成的脉冲转换单元将角度值转换为可与光栅编码器兼容的ABZ三相脉冲接口信号，从而大幅提升旋转变压器测角系统的市场竞争力。

关键词：角度传感器；旋转变压器、定子；转子；脉冲接口；解码装置

 

Research on Detecting System for Children Forgotten in School Buses 

LIU Bao-yu, CHENG Jin, ZOU Zhuo-cheng, ZHAO Jiao-qi, CHANG Chuang-chuang, YAO Yu-jun, LI Guang-dong, WANG Jun-qi, ZHOU Zi-xiao, YU Xing, ZOU Xiao-ping

Beijing Information Science and Technology University, Research Center for Sensor Technology, Beijing 100101, China

Abstract: As more and more children choose to take the school buses, incidents of children forgotten in the school buses often occur. In order to prevent children from being forgotten in the school buses, a detection system is designed. This system uses STM32 single-chip microcomputer as the control module, two sets of infrared pair tubes and one digital tube as a counting module installed at the door of the school bus, human pyroelectric sensors and surface pressure sensors as a detection module installed in the bus, and a SIM900A as the core of alarm module. This system has detection devices at startup and parking. The physical simulation show that this system meets the requirements.

Key words: Anti-forgotten; child; SIM900A; alarm device

 

 

备注：2020年 第26卷 第02期