To simplify system and reduce hard ware costs, monitoring, alarm, operation and control function were implemented by soft codes.

为了简化系统结构和降低硬件成本，监测、报警、操作和控制功能全部由软件实现。

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Setting codes of the normal-open fire-proof door, safety control and alarm escape latch system are analyzed and electrical matching design measures are discussed.

摘 要 对现行规范和地方消防规定中常开式防火门、安全控制与报警逃生门锁系统的设置规定进行分析，探讨电气配套设计措施。

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Two thresholds can improve the detection rate, and reduce the false alarm rate of ranging codes.

双门限判决能够提高测距码检测率，降低虚警率。

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