基于MMA7260QT的危险场所跌倒检测设备的研制  

Development of Falling Detection Equipment Used in Hazardous Area Based on MMA7260QT

作　　者：朱亮[1] 邹兵[1] 严龙[1] 

机构地区：[1]中国石油化工股份有限公司青岛安全工程研究院化学品安全控制国家重点实验室,山东青岛266071

出　　处：《工业安全与环保》2012年第5期45-48,共4页Industrial Safety and Environmental Protection

摘　　要：在石化企业生产过程中,如何正确检测判别跌倒行为已成为危险场所安全防护的关键,传统的判别方法已不适应石化行业特殊的工作环境和行为特点。通过对三轴加速度传感器MMA7260QT原理的研究,结合毒性气体传感器和无线传输技术,采用低功耗微处理器MSP430F249,研制了一种危险场所用跌倒检测设备。介绍了三轴加速度传感器MMA7260QT的结构和原理,给出了设备系统设计。根据石化行业危险场所特点,建立了跌倒模型,分析了三轴加速度传感器检测信息的处理,确定出跌倒判断阈值。实验结果表明,研制的设备跌倒检测准确,符合石化行业危险场所应用需求。During the production process of petrochemical industry, how to detect and judge fall activity correctly is a key factor for hazardous area safety protection, the traditional method is not applicable for the special working envlmnment and behavior characteristics in petrochemical industry anymore. Based on the research of 3 - axis accelerometer＇ s principle, combined with toxic gas sensor and wireless transmission technology, using low power microprocessor MSP430F249, devel- oped falling detection equipment used in hazardous area. Firstly, introduced structure and principle of 3 - axis accelemmeter MMA7260QT, presented system design of fall detection equipment. Then, a fall model was established on the basis of char- aeteristics of hazardous area in petrochemical industry, while analyzed process of messages detected by 3 - axis accelereme- ter, determined the falling judgment threshold. Finally, the research results show that the falling equipment detects correct- ly, and meet application demand in petrochemical hazardous area.

关 键 词：MMA7260QT 跌倒检测 毒性气体 危险场所 MSP430F249 

分 类 号：X932[环境科学与工程—安全科学]