In　order　to　improve　measurement　accuracy　and　reduce　maintenance　work　of　dynamic　measurement　system,　research　is　proposed　on　non-contract　measurement　method　based　on　machine　vision.　To　choose　real-time　measurement　system　of　mining　car　as　test　object,　and　use　binocular　vision　to　calculate　3　D　coordinates　of　contour,　and　obtain　the　values　of　volume　and　weight　with　material　through　operation.　Test　platform　and　work　flow　is　designed　in　detail.　A　calibration　method　combined　the　advantages　of　optical　calibration　with　camera　calibration　itself　is　proposed.　To　simplify　the　extraction　and　matching　of　feature　points　through　using　structured　light.　Test　results　show　that　this　method　can　effectively　improve　the　accuracy　of　dynamic　measurement　system　for　bulk　material.　©　(2013)　Trans　Tech　Publications,　Switzerland.