Three-Dimensional Asphalt Pavement Crack Detection Based on Fruit Fly Optimisation Density Peak Clustering

Table 1

Performance parameters of the Gocator3110.

Product number	3110
Net distance (ND) (mm)	150
Measuring range (MR) (mm)	100
Near field of view (NFOV) (mm)	60  105
Far field of view (FFOV) (mm)	90  160
Z direction linearity (±% of MR)	0.005
Z direction resolution (±mm)	0.035–0.108
[X]  [Y] resolution (±mm)	0.0090  0.100–0.150  0.160
Equipment size (mm)	49  74.4  276
Weight (kg)	1.35
Light source	Blue LED (465 nm)
Scanning speed	5Hz
Interface	Gigabit Ethernet
Input	Differential encoder, light source/laser safety control, external trigger
Output	2 digital output, RS-485 serial port (115K)
Input voltage	+24∼+48 VDC (25 W), ±10%
Body protection	Aluminum alloy fully enclosed body, IP 67 protection grade
Operating temperature	0∼50°C
Save temperature	−30∼70°C
Vibration resistant	10∼55 Hz, 1.5 mm bidirectional amplitude in three directions (X, Y, Z), no direction lasts for two hours
Impact resistant	15 g, half sine wave, period 11 ms, X, Y, Z forward and reverse
3D feature measurement tool	Opening (hole, groove), cylinder, bolt (thread, nonthread), plane
3D volume measurement tool	Volume, area, bounding box, position (minimum, maximum, centroid), ellipse, direction
Measurement accuracy	±50 μm