摘要：

In order to solve the existing suction nozzle needle type tray seeder easy blocking effects of sowing quality problems,DSP embedded image recognition system based on combining device,gas desorption gas blowing seeding principle,design a new mechanical self- cleaning seeding head. The device is mainly composed of a DSP embedded image recognition and automatic cleaning of the composition of the control system,the image processing module based on TMS320DM642 kernel,the function includes image preprocessing,feature extraction,feature coding and code matching process,the mechanical part comprises a nozzle,a fixed part,the cleaning piston,thimble and a reset spring,and image blocking by seed matching,output is connected with a positive air pressure action,dredge and seeding operations on the suction nozzle head using piston and the thimble. In order to verify the validity and reliability of the device,the system is tested,the results showed that,in the seeding speed for the 30 row / min,self cleaning head single grain sowing sowing rate was 98. 7%,the hole rate is 0. 52%,the playback rate is 1. 21%,the indexes and the traditional needle type nozzle compared to sowing quality and greatly improve the anti blocking effect.

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