瞬态脉冲试验法用于电火工品感度分类的研究

Application of Transient Pulse Testing to Sensitivity Classification of Electro-explosive Devices

进行了电火工品瞬态脉冲试验,利用电热响应曲线计算了电火工品桥丝的温升,根据温升大小将电火工品分组进行升降法试验和发火试验。升降法试验表明温升较大组的电火工品 50%发火电流较低,t检验结果表明这 2组电火工品的 50%发火电流有显著差异。发火试验结果说明,在相同的试验电流下,温升较大组的电火工品发火个数较温升小的多。2项试验结果表明,温升大的组感度较高,说明瞬态脉冲试验是一种可对电火工品进行感度分类的方法。

The transient pulse testing is employed to evaluate the sensitivity performance of electro-explosive devices (EEDs) . The temperature rises of bridgewire are calculated according to the thermal responce curve of EEDs . The EEDs are classified into several groups according to the temperature rise. The up and down method is used to estimate the 50% firing currents of the EEDs that are sampled from the groups having different ranges of temperature rise. The experimental result shows that the 50% firing current of the group with higher temperature rises is lower, and t -analysis presents there is notable difference between 50% firing currents of the two groups. The firing test also shows the firing amount of EEDs having higher temperature rises is more than that having lower temperature rises when the current of firing test is the same. The results show that the higher the temperature rise is, the more sensitive the EED is,and it is feasible to use transient pulse testing for sensitivity classification of electro-explosive devices.