1. Faculty of Electronic and Information Engineering, West Anhui University, Lu’an 237012, China, P. R. China
2. Generic Technology Research Center for Anhui Traditional, Chinese Medicine Industry West Anhui University, Lu’an 237012, Anhui, P. R. China
3. Undergrowth Crop Intelligent Equipment Engineering, Research Center, West Anhui University, Lu’an 237012, P. R. China
4. Faculty of Mechanical and Vehicle Engineering, West Anhui University, Lu’an 237012, P. R. China