Design, Development and Evaluation of a Mass Flow Sensor for Grain Combine Harvesters
Journal Title: Journal of Agricultural Machinery - Year 2013, Vol 3, Issue 2
Abstract
In grain yield monitoring system, the amount of clean grain mass flow rate to the storage bin is the most important yield property. In this research, an impact-plate type grain mass flow sensor was designed, developed and evaluated. After construction of the impact sensor, it was calibrated by loading the impact plate with static weights ranging from 0.5 to 4.5 kg every 0.5 kg and its linear response to the applied loads was proved with a correlation coefficient of 0.99. Then, grain mass flow measurement tests and data collection were conducted according to the ASABE standard S587, developed for grain mass flow sensors. The tests were conducted in three phases: 1- constant and steady state flow, 2- linear variation of flow, 3- oscillating flow. The results showed that the output of impact plate sensor varies proportionally and linearly with increasing wheat grain (Rowshan cultivar) mass flow rate. The error in prediction of actual flow rate was decreased by increasing the mass flow rate such that the calculated errors at 25%, 50%, 75% and 100% of flow capacity (4.25 kg s-1) were 8.3%, 6.3%, 5.2% and 4.9%, respectively. The high coefficient of determination (R2 = 0.9975) between accumulated mass flow data of impact plate sensor and the reference scale data indicated high accuracy and sensitivity of impact plate sensor in prediction of mass flow variations. The average percent error of impact sensor in variable flow rate in âramp-up-ramp-downâ, âramp-down-ramp-upâ and oscillating flows were 7.4%, 8.6% and 8.3%, respectively.
Authors and Affiliations
S. M. R. Nazemsadat,M. Loghavi,
Keywords
Related Articles
- EP ID EP717687
- DOI -
- Views 89
- Downloads 0
Evaluation and Comparison of Geostatistical Methods to Generating Digital Management Map of CyanazineVariable Rate Cyanazine Application
In this study evaluation and comparison of various interpolation approaches for estimation un-sampled values of soil Organic Matter Content (OMC) and soil texture is presented. The main objective is to develop a precisio...
Drying Kinetics of White Seedless Grape Affected by High-Humidity Hot Air Impingement Blanching
IntroductionDue to the disadvantages of using chemical materials as pretreatment before grape drying, the application of non-chemical methods that not only take the environmental issues into account but also increase the...
Assessment of Riverine Currents to Estimate the Theoretical Hydrokinetic Power and Energy Using Hydraulic Geometry
IntroductionThere are two types of hydropower harvesting methods: conventional and unconventional. In the conventional method, the potential energy of water is harvested using a dam or barrage. However, in the unconventi...
Computer Vision Utilization for Detection of Green House Tomato under Natural Illumination
Agricultural sector experiences the application of automated systems since two decades ago. These systems are applied to harvest fruits in agriculture. Computer vision is one of the technologies that are most widely used...
Development of Rice Seedling Bank Location Method using Fuzzy-VIKOR-TOPSIS Hybrid Approach
Introduction To successfully provide and distribute agricultural services throughout the supply chain and enhance efficiency in this sector, selecting the right locations for service centers is a crucial and complex chal...