Research On The Performance Detection Device Of Precision Seed-metering

The application of precision seed-drill device has become the main character of modern sowing technology. It is also the major developmental direction of sowing. The precision seed-metering is the centre component of precision seed-drill and its performance influence the sowing quality directly. So supervising the precision seed-metering timely and precisely is very essential for the insurability of machines'working statues. This paper combines the project of"the the science and technology develop bureau of Jilin province"(No. 20040545) and"the project of doctoral program fundation of Chinese ministry of education"(No. 98018513).I analysis the method of detecting the performance of seed-metering throughout domestic and overseas, and chooses the optoelectronic method to detect the seed-metering at last. After showing the shortage of the existing sensor, this paper educes the leading matter that will be recited below:1)On the basis of summarizing the method of detecting the performance of seed-metering throughout domestic and overseas and reciting the shortage of the existing sensor, I put forward the aim of this paper: Research and manufacture a no blind area detecting device that can be apt to many types of seed-metering and detect the performance precisely, which composed of 2 optoelectronic sensors. 2)I analysis the radiant and acceptant apparatus of usual optoelectronic sensor,then choose twoФ5mm emit infrared as the radiant apparatus , 2 group of nude silicon-photocells (PD-0120A) as acceptant apparatus that is sensitive to infrared. Put the diode on the focus of convex lens, on the other side of the convex...