Thermal ignition temperature was defined,the thermal ignition process of electric hot wire initiating devices was divided as calefactive phase and explosion phase.

定义了热点温度,将桥丝工品的热点程分为升温阶炸阶。

In calefactive phase, the electro thermal model of hot bridge wire was established, the calefactive time of invariable current fire case and capacitance discharge fire case were both studied.

在升温阶建立桥丝热升温模型，分别求解恒定流点升温时间容放点升温时间。