A Unique Data Acquisition System for Electrical Resistance Tomography

This paper describes the design, development and calibration of a three-point auto hitch dynamometer for measuring the horizontal and vertical forces that existed at the three-point hitch of an agricultural tractor. The design concept of the dynamometer was based on an instrumented inverted U frame assembly that was mounted between tractor links and implement. The design incorporates for both lower point hitch spread and mast height adjustments, and quick hitch capability in accordance with category 1 and II three-point hitch system. The force sensing elements were comprised of three steel extended octagonal ring transducers that were located between the inverted U frame and hook brackets. Electrical resistance strain gauges were mounted on the extended octagonal ring transducer at strain angle nodes to independently monitor strains that were proportional to the horizontal and vertical forces at the ring center. Each transducer was designed for maximum horizontal and vertical forces of 25 kN and 10 kN at measurement mean sensitivities of 25.19 µStrain/kN and 25.60 µStrain/kN, respectively. However, the complete dynamometer has been designed to measure the maximum resultant horizontal and vertical forces of 50 kN and 20 kN, respectively. Field demonstration tests on the dynamometer and data acquisition system showed that they were able to function effectively as intended. The data acquisition system was able to successfully scan and record the dynamometer signals as programmed. This dynamometer was part of the complete instrumentation system to be developed onboard a Massey Ferguson 3060 tractor for the generation of a comprehensive database on the power and energy requirements of the tractor and its working implement in the field.

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Resistance of Cell in Fractal Growth in Electrodeposition

Investigations into Living Systems, Artificial Life, and Real-World Solutions ◽

10.4018/978-1-4666-3890-7.ch001 ◽

2013 ◽

pp. 1-8

Author(s):

Y. H. Shaikh ◽

A. R. Khan ◽

K. B. Patange ◽

J. M. Pathan ◽

S. H. Behere

Keyword(s):

Data Acquisition ◽

Real Time ◽

Electrical Resistance ◽

Cell Voltage ◽

Data Acquisition System ◽

Program Control ◽

Acquisition System ◽

Computer Based ◽

Fractal Character ◽

Analogue To Digital

This paper presents the study of dynamic electrical resistance of the electrodeposition cell during the growth metallic dendrites showing fractal character. The electric resistance of the circular electrodeposition cell is measured in real time using a computer based data acquisition system. The data acquisition system constructed is capable of measuring the cell voltage and the current through the cell under program control at pre-decided intervals. This allows for the measurement of the dynamic electrical resistance of the electrodeposition cell. The system is based on standard analogue to digital controller ADC interfaced to the computer through the printer port.

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Resistance of Cell in Fractal Growth in Electrodeposition

International Journal of Artificial Life Research ◽

10.4018/jalr.2011010102 ◽

2011 ◽

Vol 2 (1) ◽

pp. 17-27 ◽

Cited By ~ 1

Author(s):

Y. H. Shaikh ◽

A. R. Khan ◽

K. B. Patange ◽

J. M. Pathan ◽

S. H. Behere

Keyword(s):

Data Acquisition ◽

Electrical Resistance ◽

Cell Voltage ◽

Data Acquisition System ◽

Acquisition System ◽

Digital Controller ◽

Electric Resistance ◽

Computer Based ◽

Fractal Character ◽

Analogue To Digital

This paper presents the study of dynamic electrical resistance of the electrodeposition cell during the growth metallic dendrites showing fractal character. The electric resistance of the circular electrodeposition cell is measured in real time using a computer based data acquisition system. The data acquisition system constructed is capable of measuring the cell voltage and the current through the cell under program control at pre-decided intervals. This allows for the measurement of the dynamic electrical resistance of the electrodeposition cell. The system is based on standard analogue to digital controller ADC interfaced to the computer through the printer port.

Download Full-text