Patent ID: 8887548

Claim:
A land mine simulator, comprising: a housing having an opening formed in one end thereof; a rigid plate movably supported in said housing at said opening thereof, said plate having a first face adapted to be exposed to a surrounding environment and a second face exposed to an interior region of said housing; a reservoir disposed in said housing, said reservoir including a flexible diaphragm opposing and spaced apart from said second face of said plate; a plurality of plungers disposed between and in contact with each of said second face of said plate and said diaphragm; a non-compressible fluid filling said reservoir; at least one air spring disposed in said housing, each said air spring including a cylinder having a movable piston sealed therein, wherein a first side of said piston is in fluid communication with said fluid in said reservoir and a second side of said piston is in fluid communication with a pressurized volume of gas within said cylinder; and a pressure sensor in fluid communication with said fluid in said reservoir.