Detection of Bolt Looseness Based on Average Autocorrelation Function

Table 1

Specific parameters of vision-measurement system.

Component	Model	Specific parameters
Camera	IMI Tech/IMB-3213UP	Image sensor type: 1/3 CMOS
		Maximum resolution: 640×480 pixel
		Real frame rate: 300 fps
		Image: 8-bit grayscale
		Pixel size: 4.8 × 4.8 μm
		Lens mount: C/CS-Mount
		Digital interface/Transfer rate: USB3.0/5 Gbps
		S/N ratio: 40 dB or better
		Dynamic range: 60 dB in global shutter mode
Optical lens	TOKINA/TC1214-3MPG	Focal length: 12 mm
		Aperture range: F1.4–16
		Mount: C-mount
		Angle of view: 39.6 ° × 30.2 °
Accessories	USB3.0 cable