Research On Key Technologies Of Software For Explosion Power Field Test System

In order to carry out the assessment of damage power of weapons and ammunition andimprove weapons’ research and development trends, we designed the software of explosionpower field testing system in LabVIEW software platform to perform the assessment ofweapon’s damage power with the coordination of explosion power testing hardware systemdeveloped by our laboratory. This testing system has shorten the research period of weapons,improved fighting performance and provided a technological means for the test phasesarmament system, as well as served as a method to test the weapons and protection facilitiesin explosion damage circumstance. It is of great significance for national defenseconstruction.The software system of explosion power field controls the working state of theintelligent detection head, before the test, we configure the detecting head with all parametersand control it by external trigger; During the experiment, ground reflection overpressure andvibration acceleration can be real-time acquired through optical fiber channel, and signals canbe processed and real-time displayed; After the explosion, host computer at1000meters farfrom the blast center can collect all the measurement data through wireless channel; If opticalfiber or wireless antenna were destroyed, we can use USB interface to complete datacollection; Then, we can display, store, and process gathered data; At last, perform theestimation of shock wave overpressure and evaluation of explosive damage power. The wholesoftware design procedure strictly followed the principle of software reliability to improve thesoftware performance.Key technological problems solved:1．Estimation of shock wave overpressure. This paper compares and analyzes empiricalformula of shock wave overpressure estimation and some fitting estimating formula in recent years which are suitable for the prescriptive test environment. Considering these formulas andtheir applicable conditions, the intelligent adaptation algorithm is proposed: when the scaledistance is greater than1, we could use empirical formula to estimate overpressure, when thescale distance is less than1, according to the similitude law of blast and least square fitting,we utilize the testing data to conclude a mathematical model which is suitable for this testingenvironment to estimate shock wave overpressure.2．Improved the reliability of software. Software reliability is improved by avoidingfault, troubleshooting, fault-tolerance three aspects. And designed the coping strategies withincorrectness data and user misoperation, and employed the method of using cache to preventpower-down data loss during the process of data acquisition and automatic data recovery aftersystem restart.