Intensive vibration caused by uneven field terrain and imbalance of working components in a combine harvester is commonly experienced by yield monitors, causing a significant influence on the performance of impact-type grain flow sensors. A yield monitor test stand was constructed based on a commercial combine harvester, and a method was developed to eliminate the effects of vibration disturbance on impact-type flow sensors. The vibration caused by combine harvesters was simulated well in the experiment, and moreover the actual grain flow rate could be adjusted and measured precisely by the weighing sensors fixed under the grain feed tank in real time. An impact-type grain flow sensor was manufactured using two parallel-beam load cells: one was impacted by the grain flow, and the other was applied as a reference beam that was only excited by the vibration of the sensor frame. A harmonic extraction method was introduced to exploit the essential characteristics involved in the collision process between the grain and the impact plate driven by the elevator paddles of the combine harvester. Then adaptive interference cancellation was utilized to eliminate the vibration noise from the measurement of the impact force of the grain flow according to data from the reference parallel-beam load cell. The experimental results showed that the relative error was less than 2.2 % when the reference parallel-beam load cell was used alone, and relative error was reduced further to less than 1.6 % when both the data from the reference load cell and the harmonic extraction method were applied.
Precision Agriculture – Springer Journals
Published: Apr 23, 2014
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera