人员报警系统，采用51单片机为控制器，用在船舶运输工具上，为人员的危险地段作业，特意设置的，分别采用5分钟，10分钟，15分钟，25分钟，等等时间作业，当作业人员遇到到危险时，就报警，让外部人员知道，做及时的救援，并且采用两组电源检查，希望能给需要帮组的人提供参考-Staff alarm system, using 51 single-chip for the controller, means of transport used in ships for the personnel operating the danger area, specially set up, respectively, 5 minutes, 10 minutes, 15 minutes, 25 minutes, and so on time operation, When the workers to a dangerous encounter, they report to the police, so that outsiders know, to do a timely rescue, and the use of two sets of power to check, I hope to give people who need help the group to provide reference