一种高精度重锤落体测速装置

在火工品验收检测中，爆炸冲量是一个非常关键的参量。炸药在空中爆炸时生成的空气冲击波的峰值和冲量是衡量弹药爆破及杀伤效果的一项重要指标，其准确测量具有重要的意义。针对火工品爆炸元件测试的需求，在现有测试技术的基础上，提出并实现了重锤落体测速装置；利用双狭缝探测结构，使光源和重锤的速度同步；设计红外发射和红外接收阵列，对电路进行抗干扰设计；在强电磁场等恶劣环境下，系统可自动完成多组数据连续测试，并给出测量数据；与铅柱法冲量测量进行了对比，测量精度大于±1%的设计要求，证明本测试装置稳定可靠。

High accuracy velocity device work on falling bodies

In the explosive detection, explosion impulse is a key parameter. The peak value and impulse of the explosion generation when they are in the air are important parameters, and it is an important index to measure the effect of blasting and kill, especially ammunition damage. A high accuracy velocity device work on falling bodies was given for the measurement needs of initiating explosive devices based on the current measure technique. For keeping the synchronization of light source and the hammer speed, double aperture slit was used in the device. The infrared transmitter, infrared receiver array and the circuit anti jamming were designed to keep the device working in harsh environments such as strong electromagnetic fields. The system can give the measured data, and realize the multiple sets of data automatically and continuously. The impulse measure result was compared between chamber column and this method. The measurement accuracy is greater than ± 1%. The results prove that this test device can work stable and reliable.