The paper is received on May 14, 2019
Abstract. The compass is a particularly important device on the ship. Using the
compass, the operator can determine the correct direction of the vessel, which
contributes to fuel economy and safety. The compass was first invented in China
during the Song Dynasty to indicate the direction of movement in the deserts. Currently,
different types of compasses are used for different purposes: electric,
satellite, magnetic compass, etc. Modern multifunctional compasses are produced
with high reliability by manufacturers from Japan, Russia, the USA, etc. Despite
the presence of a significantly large selection of compasses, existing devices
are not suitable for small vessels, their price in many cases is not affordable.
In this regard, research and manufacture of digital magnetic compass (DMC),
which can be connected to other onboard systems, allows the solution of
economic difficulties.
In
the process of studying the design of digital magnetic compass, a difficulty
arose that poses the problem of filtering noise for a digital magnetic compass.
In a pilot study, the authors used a Kalman filter to filter noise information
for a digital magnetic compass. In the process of testing, the authors found
that using the Kalman filter to filter out information noise for a compass was
very effective.
The
article describes the results of research, manufacturing the DMC, and the use
of the Kalman filter to filtering the noisy information from this compass. The
results of practical tests show that the use of the Kalman algorithm provides
significantly better accuracy of filtration. The manufactured DMC (with the
Kalman filter) was certificated and its readiness was shown for operation under
real conditions.
Key words: digital magnetic compass, microcontroller, magnetic course, real noisy
information, filtering, Kalman algorithm, output information, accuracy estimates,
IMO, azimuth, I2C protocol, data NMEA0183.
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For citation:
Vu Xuan Hau, V. E.
Ivanov, S. I. Kumkov, Nguyen Dinh Thach.
Research, manufacturing of a
shipborne digital magnetic compass and applying the Kalman filter to filter the
noisy information of a given compass. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 5. Available at http://jre.cplire.ru/jre/may19/6/text.pdf
DOI 10.30898/1684-1719.2019.5.6