1什么叫周界防范在入侵报警系统的设计中,需要符合整体纵深防护和局部纵深防护的要求,纵深防护体系包含周界、监视区、防护区和禁区。周界根据整体纵深防护和局部纵深防护的要求分为外周界和内周界。一般情况下,行业上的周界防范系统是对外周界进行防范保护,在外 1 What is the perimeter precaution In intrusion alarm system design, in line with the overall depth of defense and partial depth protection requirements, depth protection system includes the perimeter, surveillance zone, protection zone and restricted zone. The perimeter is divided into the outer perimeter and the inner perimeter according to the requirement of overall depth protection and partial depth protection. Under normal circumstances, the industry’s perimeter defense system is to prevent the protection of the outer perimeter