Seeding absence real-time detection method for precision seed-metering device

• Main Authors: DING YOUCHUN, WANG XUELING, ZHANG WENYU, LI MING, LIAO QINGXI, HUANG HAIDONG
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2014
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERTILISING; FISHING; FORESTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HUNTING; PLANTING; SOWING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRAPPING

Belonging to the technical field of automatic detection, the invention in particular relates to a seeding absence real-time detection method for a precision seed-metering device. By adopting synchronous detection of seed plate rotating speed and seeding frequency and dual threshold constraints of seeding frequency and seeding time interval, the method realizes detection of different seeding absence. A seed plate standard seeding pulse and a seed charge port's seed flow can be sensed through a Hall sensor and an optical fiber sensor, conditioned and then accessed to an interrupt interface of a single-chip microcomputer. The seeding frequency of a seeding sequence and the seeding time interval statistical parameters can be acquired through a time window determined by seed plate standard seeding pulse signals, with the parameters involving a temporal summation greater than a triple standard time, a window time and seeding frequency smoothing. By combining a set seeding absence coefficient, two seeding absence st