A Lightweight and Multisource Information Fusion Method for Real-Time Monitoring of Lump Coal on Mining Conveyor Belts

Table 1

Coal particle size classification.

Numbers	Particle size names	Particle size symbols	Particle size (mm)
1	Jumbo lump	T	100∼300
2	Large lump	D	50∼100
3	Medium lump	Z	25∼50
4	Small lump	X	13∼25
5	Pellets coal	L	6∼13
6	Pulverized coal	F	<6