Abstract:With the continuous development of weapons and equipment, the power, scientificity and particularity of ammunition are constantly improved, and the burrowing weapons for tunnels are also increasing day by day.In view of the increasing demand for shock wave test in tunnel, the test requirements are getting higher and higher. A test system for shock wave in tunnel is designed.FPGA software control provides a number of programmable parameters, endowing the system with different charge warhead shock wave testing versatility;Digital potentiometer combined with instrument amplifier combined with ICP sensor DC bias, to minimize the interference of the sensor's own DC signal to the data, improve the accuracy and reliability of the system;The bad block management of FLASH memory is carried out by using the method of reserve area replacement, which ensures the continuity of data storage and avoids the chaos of data recording between channels caused by bad blocks.The system has 1~100 times adjustable gain amplifier, the filter cutoff frequency is 40K ~ 500K, the sampling accuracy is 16bit, the sampling frequency can be up to 2MSPs per channel.The results of many live ammunition tests show that the system is convenient to operate and the data meet the expectation, which verifies the reliability of the system and provides a new means of shock wave test in tunnel.
