The invention discloses a 
control system and control method of a small-size agricultural product intelligent sorting 
machine based on a DSP, and belongs to the technical field of classification and sorting in agricultural 
product processing. The 
control system comprises a material horizontal conveying device, an illuminating 
system, a real-time 
image capture and analysis 
system, an 
image capture triggering and sorting triggering 
system and a sorting system. The sorting system is connected with the 
tail end of the material horizontal conveying device, the illuminating system is arranged on the material horizontal conveying device, and the real-time 
image capture and analysis system and the image capture triggering and sorting triggering system are arranged above the illuminating system. According to the 
control system and control method, a DSP 
chip serves as the visual core of the intelligent sorting 
machine and replaces a common PC, real-time image capture, 
processing and analysis are achieved independently, capture triggering and sorting triggering are achieved through a 
single chip microprocessor and an optoelectronic switch to achieve control over sorting, therefore, a 
machine visual system is low in cost, high in integration level and high in 
processing speed, and real-time image capture, analysis and sorting can be carried out at the same time.