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Digital Measuring System for Monitoring Motor Shaft Parameters on Ships (CROSBI ID 155001)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Džapo, Hrvoje ; Stare, Zoran ; Bobanac, Nenad Digital Measuring System for Monitoring Motor Shaft Parameters on Ships // IEEE transactions on instrumentation and measurement, 58 (2009), 10; 3702-3712. doi: 10.1109/TIM.2009.2019316

Podaci o odgovornosti

Džapo, Hrvoje ; Stare, Zoran ; Bobanac, Nenad

engleski

Digital Measuring System for Monitoring Motor Shaft Parameters on Ships

The robust measuring system for continuous monitoring of the ship motor shaft average torque, power and rotational speed was developed and tested. The system was designed for permanent installation in ships under realistic working conditions. The strain gage sensor is employed to measure the torque, while the shaft rotational speed is measured by the inductive proximity switch. The strain gage signal conditioning circuit design was highly simplified by using high-resolution sigma-delta A/D converter. Such approach minimizes the overall number of analog components and the input measuring chain errors. Contactless power transmission subsystem was developed, based on the specifically designed rotary transformer operating at the low frequency. Strain measurement results are transmitted over the near-field low frequency capacitive link by using specifically designed communication protocol, based on the digital modulation principle. Receiver microprocessor-based unit processes measured data and transmits the results to the monitoring human-machine interface over some commonly used industrial analog and digital communication protocols. The principal advantages of the novel measuring system design over some state-of-the-art commercial solutions are simplicity, higher accuracy, stability, reliability, simplified calibration procedure and contactless signal transmission and processing completely in a digital form, hence reducing the most common shortcomings of similar analog-based systems.

marine electronic equipment; mechanical variables measurement; strain measurement; torque measurement; digital measurements

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Podaci o izdanju

58 (10)

2009.

3702-3712

objavljeno

0018-9456

10.1109/TIM.2009.2019316

Povezanost rada

Elektrotehnika

Poveznice
Indeksiranost