Lumbar vertebra measuring equipment for automobile crash test and measuring method thereof

The invention discloses lumbar vertebra measuring equipment for an automobile crash test and a measuring method thereof. The measuring equipment comprises a fixing frame, a foam plate is fixedly connected into the fixed frame; hollow pipes are arranged in the foam plate in a penetrating and inserting mode. The middle of the hollow pipe is fixedly connected with a carrying plate. A distance sensoris fixedly connected to the middle of the carrying plate. A controller is fixedly connected to the top end of the fixed frame, fixed rods are fixedly connected to the four corners of the back face ofthe fixed frame, movable plates are arranged on the fixed rods in a penetrating mode, supporting legs are fixedly connected to the four corners of the bottom end of the fixed frame, a plurality of threaded holes are formed in the supporting legs, and a rubber ring is fixedly connected to one end of the hollow pipe. The lumbar vertebra shape is measured through different displacements borne by thehollow pipes during extrusi