Evaluation of Seed Distribution Uniformity of a Multi-flight Auger as a Grain Drill Metering Device

Maleki, Mohammad Reza; Jafari, Jalil; Raufat, M.H.; Mouazen, Abdul Mounem; Baerdemaeker, Josse De

doi:10.1016/j.biosystemseng.2006.04.003

Cited by 49 publications

(29 citation statements)

References 16 publications

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“…Valentin et al [11] examined the influence of groove direction on the uniformity of small seed distribution under certain diameter, groove number, and length conditions. Maleki et al [8] found that fertilizer feeder uniformity increases with the outer diameter of the spiral grooved-wheel, groove depth and width, spiral quantity, and revolving speed, but they did not study the influence of helix angle on uniformity. Ning et al [12] confirmed that the working parameters of the grooved-wheel contributed to the improvement of the fertilizer feeding performance of the grooved-wheel, but they did not consider the influence of helix angle on uniformity.…”

Section: State Of the Artmentioning

confidence: 99%

“…The latter uses the discrete element method to optimize key parameters of the fertilizer feeder, and it is direct and universal. Researchers have used the discrete element method to study the parameters of the grooved-wheel fertilizer feeder, such as diameter, effective working length, revolving speed, and groove number [2,8], but the method cannot solve the pulsation problem under low revolving speeds and small feeding quantities. Only a few studies have been conducted on the influence of the grooved-wheel's helix angle on fertilizer feeding uniformity.…”

Section: Introductionmentioning

confidence: 99%

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Fertilizer Feeding Mechanism and Experimental Study of a Spiral Grooved-Wheel Fertilizer Feeder

Zhang¹,

Zhang²,

Zheng³

2018

JESTR

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Outer grooved-wheel fertilizer feeders are extensively used for the application of solid fertilizers. As a key structure of the fertilizer feeding apparatus, this type of feeder's performance directly affects fertilizer feeding quality. Given that the teeth ridge of the traditional outer straight grooved-wheel fertilizer feeder is parallel to the axis, the teeth ridge and groove appear in a staggered manner during fertilizer feeding, and the fertilizer appears a pulsation phenomenon that affects the uniformity of fertilizer feeding. Therefore, for the fertilizer feeding pulsation problem caused by the structure of the outer straight grooved-wheel fertilizer feeder during fertilizer feeding, the spiral grooved-wheel was used in this study to replace the straight grooved-wheel. Design optimization was performed on the key structural parameters of the spiral grooved-wheel fertilizer feeder, and the uniform fertilizer feeding mechanism of the spiral grooved-wheel was studied using particular discrete element. Then, an experimental comparison and analysis of the fertilizer feeding performance of the two grooved-wheel types were implemented. Results showed that under similar conditions, the fertilizer feeding quantity of the spiral grooved-wheel was higher than that of the straight grooved-wheel when the helix angle was 60.83°. Through this mechanism, the spiral grooved-wheel was always a constant axial teeth ridge section participating in the fertilizer feeding process. The uniformity of fertilizer feeding is improved. The fertilizer feeding uniformity of the spiral grooved-wheel fertilizer feeder is much better than that of the straight grooved-wheel fertilizer feeder when the revolving speed is low. This study is important for mechanical-structural optimization of solid fertilizer feeders and improvement of fertilizer feeding precision.

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Section: State Of the Artmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fertilizer Feeding Mechanism and Experimental Study of a Spiral Grooved-Wheel Fertilizer Feeder

Zhang¹,

Zhang²,

Zheng³

2018

JESTR

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“…This metering device is simple and cheap, and it is easy to adjust the sowing rate and adapt to high working speeds [56] . A spiral grooved metering device can improve the seed distribution uniformity in the sowed row [57,58] . Amasone designed control seed wheels ( Figure 2) with sowing rate adjustable from 1.5 to 400 kg/hm 2 and high precision [59] .…”

Section: Review Of Precision Rice Metering Devicesmentioning

confidence: 99%

Review of precision rice hill-drop drilling technology and machine for paddy

Zhang

Wang

Luo

et al. 2018

International Journal of Agricultural and Biological Engineering

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Mechanized rice direct seeding is a cost-effective and efficient approach for rice cultivation. Recently, the use of rice direct seeding has been increasing rapidly owing to rural labour shortages and continuous increases in agricultural production costs. This article reviews the research and application progress of mechanized rice direct seeding including direct seeding technologies, precision rice seeding, precision rice seed-metering devices, key supporting agronomy technologies for mechanized rice direct seeding. South China Agricultural University developed precision rice hill-drop drilling (PRHDD) with synchronous furrowing and ridging technology and series machines for paddy that affords remarkable advantages in terms of saving time and labour, higher yield, and higher efficiency. In this approach, pre-germinated seeds are uniformly hill-dropped in the expected positions in puddled soil. It significantly improved the crop growth population and effectively solved the problems of high frequency of disease and pests caused by the irregular distribution of rice seeds with manual broadcasting, and generally reduces seed usage and increases the yield. Therefore, this technology has broad application prospects and great potential for promoting the development of mechanized rice direct seeding in China.

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“…The difficulty lies in overcoming the vibration interference from the machine during field operation and reliably extracting the weighing signal [23]. These methods have been proven to effectively measure the cumulative application rate over a certain period, but the feasibility of closed-loop control for the application rate of wheat fertilizing and seeding operations has not been reported.For wheat seeding and fertilizing applications, an applicator with fluted rollers is widely used in the seed-fertilizer drill machine, due to its reliability and stability, and is especially suitable for the seeding of non-single seeds or granular material, such as solid granular fertilizer and wheat [24,25]. The application rate of seeding and fertilizing applicators with fluted rollers is dependent on the material density, material filling coefficient, driving layer characteristic coefficient, wear and tear (brush damage, gap change between brush and fluted rollers), material adhesion, and clogging [26].…”

mentioning

confidence: 99%

Development and Evaluation of a Calibrating System for the Application Rate Control of a Seed-Fertilizer Drill Machine with Fluted Rollers

Ding

Liu

et al. 2019

Applied Sciences

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Seed-fertilizer drill machines with fluted rollers generally utilize a calibrated relationship between the fluted-roller rotation speed and mass flow rate to control the application rate. However, this relationship model gradually deteriorates with operating time and is easily affected by working conditions. To maintain the initial operating accuracy, a self-calibrating system for adjusting the control model parameters was designed. It utilizes the application-rate information and fluted-rollers rotation speed data during the operation process to dynamically establish the calibrated relationship. During the field tests performed 18 times, the self-calibrating system could dynamically re-calibrate the relationship model. After the model parameters were updated, the application rate control system maintained a high accuracy level, though the relative deviation of control parameters was relatively higher. The average relative deviations between actual and theoretical cumulative application rates were 0.97% and 1.22% for seeding and fertilizing, respectively, and the standard deviations were 0.69% and 0.62%. Correspondingly, the average relative deviations of control parameters were 7.29% and 7.86%, and the standard deviations were 1.16% and 3.06%. These results indicate that the proposed method with closed-looped control can maintain high-quality control performance and improve the productivity of the drill machine, which will benefit the agricultural production. Appl. Sci. 2019, 9, 5434 2 of 15 depend on the relationship model between the mass flow rate of fertilizing or seeding and the rotation speed of the driving shaft to the control. Based on this relationship model, real-time control of the driving shaft rotation speed can be performed to control the application rate when the target application rate and vehicle speed are given [8]. This kind of open-looped control structure is simple and economic. The disadvantages are that it cannot eliminate the error caused by interference and the control accuracy easily decreases once the relationship model parameters change because of the change of working conditions. The closed-looped control structure can effectively suppress this interference and improve the response performance of the control system [9].Closed-loop application-rate control structure has not been widely applied, due to the lack of efficient and real-time application-rate measurement sensors. Over the past 30 years, agricultural scientists and technicians around the world have conducted extensive research on seeding and fertilizing application-rate measurement sensors. The main techniques for application rate measurement include the photoelectric method [10,11], impulse method [12,13], capacitance method [14], and weighing method [15]. The principle of the photoelectric method is that the photoelectric sensor will be blocked in the process of material flow and a photoelectric signal will be generated. The quantity of material can be calculated by the sparse degree of the photoelectric signal to measu...

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Evaluation of Seed Distribution Uniformity of a Multi-flight Auger as a Grain Drill Metering Device

Cited by 49 publications

References 16 publications

Fertilizer Feeding Mechanism and Experimental Study of a Spiral Grooved-Wheel Fertilizer Feeder

Fertilizer Feeding Mechanism and Experimental Study of a Spiral Grooved-Wheel Fertilizer Feeder

Review of precision rice hill-drop drilling technology and machine for paddy

Development and Evaluation of a Calibrating System for the Application Rate Control of a Seed-Fertilizer Drill Machine with Fluted Rollers

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