System parameters No. Item Indicators 1 Detection speed 0~10km/h 2 Tighten state ±0.1mm 3 Installation status of spring bar (Error detection rate)＜2% (Leak detection rate)＜2% 4 Parts defect (Error detection rate)＜2% (Leak detection rate)＜2% 5 Plate thickness ±0.5mm 6 Left and right position of rail and rail bearing platform ±0.5mm 7 Clearance between longitudinal limit boss and rail bottom of iron backing plate ±0.5mm 8 Detection speed 0~10km/h 9 Continuous working time >4h 10 Test mode General survey 11 Working temperature (-20~50)℃ 12 Equipment weight about 30kg Data achievements    

System parameters No. Item name Technical indicator 1 Detection speed 0-10km/h 2 Equipment weight monomer about 30kg 3 Continuous working time ＞5 hours 4 Crack sensitivity 0.1mm 5 Detection accuracy of deviation value 0.2mm 6 Environment temperature (-20~50)℃   Data achievements  

System parameters Item Indicators Detection range and accuracy Absolute accuracy of point cloud (5mm) Relative accuracy of point cloud (1mm) Microscopic cracks (0.3mm) The lining of impellers (5mm) Water seepage (20mm*20mm) Contamination limit (5mm) Laser emission frequency 1 million dots per second Laser ranging accuracy 2mm (20m, 90% reflected intensity) Camera pixels 70 million pixels Working performance 5-15km/h Homework personnel 2-3 Working environment All-weather operation (except rain or snow)   Data achievements

System parameters No. Item Indicators 1 Stagger value Measuring range: 1400-1700mm 2 Conductance value Measuring range:150-300mm 3 Joint flatness Vertical and horizontal unevenness, alarm when greater than 1mm 4 Abrasion Contact rail wear detection accuracy＜±1mm 5 Included angle The third rail lower surface and rail surface included angle, detection accuracy＜±1° 6 Expansion joint Automatic recognition of Expansion joints over 3mm in width 7 Detection precision Pull out and guide height: ＜±3mm 8 Detection speed ≤6km/h 9 Working time >4 hours 10 Measuring way Real-time detection, over-limit audible and visual alarm 11 Equipment weight ≤24.5kg 12 The equipment size 1600L*650W*300H 13 Working temperature -10~50℃   Data achievements

System parameters No. Item name Measuring rangemm Display value allows error mm Indication repeatability mm 1 Contact line height 5100~6500 ±3.0 1.5 2 Stagger value -600~600 ±5.0 2.0 3 Hanging string elevation difference 0~2500mm ±5.0 2.0 4 Strut side limit 2400~6500 ±5.0 2.0 5 Locator slope 5.7°~18.4° ±1° ±0.3° 6 Range 0~9999KM accuracy 0.1% 7 Working speed 0-5km/h 8 Working time >4 hours 9 Dustproof grade IP65; (scanner) 10 Working environment Environment temperature-30℃～+60℃, relative humidity≤85%    

System parameters Item name Indicators Laser emission frequency 1 million dots per second Scanning frequency 200 rotation/speed Scanning angle 360° Measuring range 0.5m-119m Scanning resolution 0.0088° Detection precision 2mm (80m 90% reflection) Absolute accuracy 5mm (CP III control net) Gyroscope zero bias stability ≤0.015°/h Working performance 3-5km/h (Handbarrow) Detection range Metro tunnel: horizontal convergence, section analysis, ring plate misalignment, water seepage, fracture, Contamination limit detection, ring plate falling, etc   High-speed railway tunnel: section analysis, The lining of impellers, water seepage, cracks, catenary, cable trough Contamination limit detection, etc Working environment All-weather operation (except rain and snow) Homework personnel 2-3 Data achievements