Response time evaluation of real-time sensor based variable rate technology equipment

2009 ◽  
Author(s):  
Praveen J Bennur ◽  
Randal K Taylor
Keyword(s):  
Response Time ◽  
Real Time ◽  
Variable Rate ◽  
Variable Rate Technology ◽  
Time Evaluation

scholarly journals Design and Development of a Variable Rate Applicator for Real-Time Application of Fertilizer

2021 ◽  
Vol 13 (16) ◽  
pp. 8694
Author(s):  
Hasan Mirzakhaninafchi ◽  
Manjeet Singh ◽  
Vishal Bector ◽  
Om P. Gupta ◽  
Rajvir Singh
Keyword(s):  
Real Time ◽  
Rotational Speed ◽  
Pulse Width Modulation ◽  
Cost Effective ◽  
Fertilizer Application ◽  
Drive Shaft ◽  
Variable Rate ◽  
Hydraulic Motor ◽  
Variable Rate Technology ◽  
To Receive

Variable rate technology offers a sustainable, efficient, and cost-effective solution for fertilizer application. A study was conducted to design and develop a variable rate fertilizer applicator to detect real-time deficiency of N within the field and apply it per requirement of the crop. The microcontroller system was designed to receive a signal from the N sensor and send a signal to the pulse-width-modulation valve to vary the rotational speed of the hydraulic motor resulting in variation in the rotation of the metering mechanism drive shaft based on the recommended amount of fertilizer. During the field study, three replications were conducted, each of which was divided into four plots. The response time between the N sensing and fertilizer discharging fell within the range of 3.49 to 4.90 s. Fertilizer applied using the developed variable rate applicator indicated that when the fertilizer rate is increased from N1 to N4 (kg ha−1), NDVI increased from 0.56 to 0.78 and drive shaft rotational speed decreased from 20 to 0 rpm in order to apply the fertilizer at a rate of 0.00 instead of 78.36 kg ha−1. Using the developed applicator demonstrates that this technology could reduce environmental impact, making farming more sustainable.

Real-Time Evaluation of Site Characterization to Direct and Conclude Exploration

2001 ◽  
Vol 1755 (1) ◽  
pp. 51-59 ◽  
Author(s):  
Andrew J. Graettinger ◽  
Thanaporn Supriyasilp ◽  
S. Rocky Durrans
Keyword(s):  
Real Time ◽  
Site Characterization ◽  
Time Evaluation

Real time evaluation of monolateral clubfoot with sonoelastography

2014 ◽  
Vol 119 (8) ◽  
pp. 601-606 ◽  
Author(s):  
Salvatore Masala ◽  
Guglielmo Manenti ◽  
Marco Antonicoli ◽  
Daniele Morosetti ◽  
Giulia Claroni ◽  
...  
Keyword(s):  
Real Time ◽  
Time Evaluation
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