Design of pedestrian monitoring and protection system of continuous shearer
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摘要: 针对连续采煤机后部输送机在工作过程中存在误伤行人的安全隐患,设计了一种基于红外热成像技术的连续采煤机人员监测保护系统。首先利用长波红外探头对连续采煤机后部输送机监测敏感区域进行监测,实时采集监测敏感区域内红外影像信息;然后利用微处理机对采集的红外影像信息进行实时性处理,并对行人进行检测,当检测到有行人进入到监测敏感区域时,在1 s内快速判断行人信息,触发预警保护策略,当行人退出监测敏感区域后,预警保护机制自动停止,当行人越过监测敏感区域时,微处理机触发紧急停车控制策略,使连续采煤机后部输送机紧急停车,保护越界行人的安全。现场测试结果表明,该系统稳定、可靠,识别精度高,能够实现对连续采煤机后部输送机左前方1~2 m范围内的行人进行有效监测,保证了连续采煤机附近人员的生命安全。Abstract: In view of potential safety hazards of accidentally injuring pedestrians during operation process of conveyor at the back of continuous shearer, a pedestrian monitoring and protection system of continuous shearer based on infrared thermal imaging was designed. Firstly, long-wave infrared probe was used to monitor sensitive areas of the conveyor at the back of continuous shearer and real-timely collect infrared image information in the sensitive areas. Then, microprocessor was used to process the infrared image information, and pedestrians were detected; when pedestrians were detected entering the sensitive area, the pedestrian information would be rapidly judged by microprocessor within 1 s, meanwhile an early warning protection strategy would be triggered; when the pedestrians exited the sensitive area, the early warning protection mechanism would stop automatically; when the pedestrians passed over the sensitive area, at that time, an emergency stop control strategy would be triggered by microprocessor, so as to make the conveyor at the back of continuous shearer stop urgently to protect safety of crossing pedestrians. The site test results show that the system is stable and reliable with high recognition accuracy, and can effectively monitor pedestrians within the range of 1 to 2 meters on the front left area of the conveyor at the back of the continuous shearer, which effectively guaranteed life safety of pedestrians nearby the continuous shearer.
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