Alarm method and device

The invention belongs to the technical field of nuclear power, and particularly relates to an alarm method and device. According to the improved time delay alarm system, traditional time delay is effectively improved, a dead zone is introduced on the basis of time delay, the influence of noise on process variable sampling can be restrained through the dead zone, and another angle is provided for optimizing alarm performance; and the accuracy and sensitivity of the improved alarm system can be changed by adjusting the size of the dead zone, so that the alarm system is more suitable for scenes with different requirements. 本公开属于核电技术领域，具体涉及一种报警方法及装置。本公开提的改进时间延迟报警系统是对传统时间延迟的有效改进，在时延的基础上引进了死区，不仅可以利用死区抑制噪声对过程变量采样的影响，还为优化报警性能提供了另一个角度；其次本公开改进的报警系统还可以通过调整死区大小改变报警系统的准确度和灵敏度，使得报警系统更加适用于不同需求的场景。