柔性可穿戴活体表面冲击波测试系统设计OA

To address the significant deviation in the correlation between biological injury and shock wave physical parameters caused by the complex propagation path of shock waves where traditional testing of groud overpressure near living organisms fails to accurately re-present the actual shock waves experienced by the organism,an overall technical solution is proposed.This solution involves mounting pressure sensors and wireless data acquisition devices onto the living body using a flexible wearable apparatus.Key technologies are overcome,including pressure sensor selection,multiple re-tringgering technology,low-power circuit desing,structure miniaturization desing,rapid extraction of shock wave characteristic parameters,and flexible wearable shock wave test system is then applied to measure shock wave overpressure at specific points on the body surface of live sheep.The results show that the system works reliably and is con-venient to install.In tests using a certain type of high explosive munition during static explosion tests at two distances,and during firing from a certain type of artillery,the ratios of frontal(facing the blast)overpressure measured on the sheep surface to that measured at the groud location are 170.5％,119.8％and 52.7％,respectively.The values of the back surface shock wave overpressure are 46.6％,56.0％,and 55.8％of the frontal values,respectively.These findings indicate that the shock wave overpressure at different surface posi-tions of live organisms differs significantly from the shock wave overpressure measured on the ground.