桥丝式电火工品射频感度试验研究

Radiofrequency Sensitivity of Hot-bridge Electric Explosive Device

为了研究射频对电火工品的影响,利用传导方法分别测定了三种不同的桥丝式电火工品试样的敏感频率,然后在敏感频率条件下根据升降法对试样的射频感度进行了测定和计算。对三种各30发电火工品进行了敏感频率探测试验,确定射频敏感频率均为0.4 GHz;在敏感频率条件下,利用升降法对三种各30发电火工品的射频感度进行了测试,射频感度随桥丝电阻增加而降低,计算得到50%发火功率分别为2.818 W、0.428 W和0.897 W。

The effect of radiofrequeney on three different hot-bridge electric explosive devices was studied by experiment and calculation. The sensitive frequency were measured using conduction method, and the radiofrequeney sensitivity was tested and calculated in the condition of sensitive frequency based on the up-down method. The sensitive frequencies are 0. 4 GHz through detection test of 30 samples for each electric explosive device; the fire powers are 2. 818 W,0. 428 W and 0. 897 W at 50% fire/no fire through radiofrequency sensitivity test of 30 samples for each electric explosive device,and the radiofrequeney sensitivity decreases along with the increase of electric resistance of hot-bridge.