Keywords 3axis fluxgate magnetometer sensor, lessmaxx sensors. Aug 08, 2012 the basic fluxgate compass is a simple electromagnetic device that employs two or more small coils of wire around a core of highly permeable magnetic material, to directly sense the direction of the horizontal component of the earths magnetic field. The fluxgate is a floating ring core type, which means there is no need for mechanical gimbals to keep it in horizontal position. Gyroscopic flight instruments the flux gate compass system, remote indicating compass. The fluxgate sensor element is a saturable ring core, free floating in an inert fluid within a cylindrical lexan housing. Installing a digital fluxgate compass boat project. Gyroscopic flight instruments the flux gate compass system. Fluxgate compass test raymarine marine electronics. The range includes the legendary jupiter magnetic flat glass compass, a range of binnacles, a fluxgate pickoff, bypass arrangements and azimuth devices. It is equipped with 5,5 m 18 feet of simnet cable with connector. The flux gate compass that drives slaved gyros uses the characteristic of current induction. The c100 electronic compass is a stateoftheart microprocessorcontrolled fluxgate compass subsystem which consists of a detachable toroidal fluxgate sensing element and a small. Request pdf design of three axis fluxgate digital magnetic compass a novel fluxgate digital magnetic compass system is introduced based on fluxgate technology and two axis dip.
The 10 step compensation ensures an accurate heading. A fluxgate compass is typically more accurate than the gps in terms of bearing. This typically entails going round in circles a couple of times, which is known as swinging the compass. Compass basics a compass is one of the most basic navigation tools any hiker can own. Fluxgate compass model c500 inexpensive fluxgate heading sensor with high accuracy and stability automatic correction for local magnetic variation with an appropriate gps navigator or manual correction with the optional remote display rd30 compact waterproof housing with visual status indicators for a simple installation.
How to use a compass the most important piece of gear to help you find your way. Fluxgate based displacement sensor reference design tida00463 the tida00463 showcases a displacement sensor for linear distance measurements in a boosterpack form factor for ti launchpad. High resolution, low power consumption and orthogonal fields detection makes it suitable for portable compass applications. The compass module mounted on the center or the white breadboard is a dualaxis magnetic field sensor. This effect must be compensated in a fluid compass as well as in a fluxgate compass. In order to understand why, you have to understand that a fluxgate compass function on the laws of basic electromagnetism. An improved fluxgate compass ocean navigator january. The fluxgate magnetometer is a magnetic field sensor for vector magnetic field. The network compass display has three brightness settings or off. The fluxgate compass box may be either bracket mounted or flush mounted. The compass instrument shows both compass heading and steering indication.
Fluxgate compass the fluxgate compass is the direction sensor for the smart heading system. As mentioned earlier, the lines of flux in the earths magnetic field have two basic characteristics. One reason i went with a digital compass is the kvh model has a nmea0183 output, which can be connected to the chartplotter. Integrated fluxgate compass for portable applications. L 0 off l 3 high l 2 medium l 1 low example systems using network compass contd. Page 1 page 2 page 3 page 4 page 5 package contents page 6 page 7 page 8 table of contents page 9 page 10 chapter 1. It needs no batteries, works with any map, and even works without a map. On todays cruising boats, most digital heading data, whether from the autopilot or the masthead wind indicator, is from a fluxgate compass.
So when you turn on a new fluxgate compass for the first time, the displayed heading will be incorrect. Its normal range is suitable for measuring earths field and it is capable of resolving well below one 10,000 th of that. The fluxgate compass consists of two or more small coils of wire wound around an electromagnetically permeable core as opposed to a permanent magnet. Simrad fc40 fluxgate compassthe simrad fc40 fluxgate compass is designed for connection to the simnet network. Apr 25, 2014 enter the fluxgate compass, which is an electromagnetic device that produces an electrical signal output that can be digitized. Follow the manufacturers procedure for calibrating the compass. Using the earthos magnetic field, electronic compasses based on magnetoresistive mr sensors can electrically resolve better than 0. Applications of magnetoresistive sensors in navigation. Modern applications in industry, navigation and medicine demand small and sensitive magnetic field sensors. Gyroscopic flight instruments the flux gate compass. The nmea compass unit is a complete component for a compass indicating system. Where gps or similar positioning data is available from another instrument, course over ground cog is calculated and can be used to provide a true course display.
Simrad ci300x compass interface 20220471b 1 instruction manual this manual is intended as a reference guide for installing equipment connected to the ci300x compass interface unit, for use with the xseries and ap50 autopilot systems. Raymarine fluxgate compass installation guide compass area no8 x 34 inch panhead selftapping screws x4 compass warning label fluxgate compass with 8 m 26 ft cable d62681 pozidrive power drill screwdriver parts supplied tools required 3 mm 1 8 inch drill 30% 50% 1. On conventional fluid compasses this requires the services of a qualified specialist. A threeaxis fluxgate magnetometer was part of the mariner 2 and mariner 10 missions. Electronic fluxgate compasses offer some advantages over the mechanical magnetic compass in the areas of accuracy, stability, ease of installation, calibration, and magnetic heading information in readily usable electronic form. The sensing device on the compass module is a hitachi hm55b chip. Power and data in a seatalk system are fed via a single cable, so that instruments can be connected by plugging them into the network. The c100 electronic compass is a stateoftheart microprocessorcontrolled fluxgate compass subsystem which consists of a detachable toroidal fluxgate sensing element and a small electronics board.
It provides the gyroplus 2 unit with information about the boat s current heading. From june, 1943, until the end of the war it served in the b17 as a primary navigation aid for highaltitude bombing in europe. Setting the display back lighting modetimer lock setup lights enter network compass mode timer lock setup lights. Rc3000 mobile antenna controller users manual contents subject to change 1 december 2005 research concepts inc. The basic fluxgate compass is a simple electromagnetic device that employs two or more small coils of wire around a core of highly permeable magnetic material, to directly sense the direction of the horizontal component of the earths magnetic field. Applications of magnetoresistive sensors in navigation systems. Applications of magnetoresistive sensors in navigation systems michael j. When spot colors are expected, the same color might appear twice or more, each time with a different name. The measurement of the magnetization of a magnetic material like a ferromagnet is an example. The lessmaxx tinymag is a miniature, high accuracy, high temperature, low noise, rugged 3axis fluxgate magnetometer sensor.
A compass is one such device, one that measures the direction of an ambient magnetic field, in this case, the earths magnetic field. A magnetometer is a device that measures magnetismthe direction, strength, or relative change of a magnetic field at a particular location. This manual is intended to be used in conjunction with the autopilot manual, and references specific sections. Rather than repairing the compass, i decided to replace it with a kvh digital fluxgate compass. The fgm3d is a compact and high performance threeaxis fluxgate magnetometer. Introduction page 11 important information page 12 chapter 2. This fluxgate compass connects to the nke bus and it feeds the system with the magnetic compass heading value. Unlike an ordinary fluxgate that only outputs sinecosine data, the pg500 outputs the heading data in the format of iec 61162, nmea 0183 or.
If you or pierre have any good links to the fluxgate compass test, or to the manual for the 6000 model that would be much appreciated. If it occurs during flight the card will realign to the fluxgate signal, even if the fluxgate is incorrect. Fluxgate compass keeping you straight cruising world. Rfc35r rate compass installation and calibration the rfc35r rate compass also contains a magnetic fluxgate sensor, which means you have to take the same precautions at installation as for the standard rfc35. How a satellite compass works the technology explained any metallic or magnetic objects magnetic compasses are twitchy things at the best of times in close proximity and local variation affects the accuracy and the higher the latitude, the. Media in category fluxgate magnetometers the following 16 files are in this category, out of 16 total. Fluxgate definition is a device used to indicate the direction and intensity of the magnetic field as on a planet.
The gyro flux gate compass was developed by bendix aviation corp. Connect the fluxgate compass cables, colour for colour, to the fluxgate compass to display head connections. For prototyping your fluxgate compass and its associated software application i like to use the basic stamp any version 2 microprocessor should work fine. While entire books have been written about navigating with a compass, every compass. Input from simnet heading offset calibration start software uploadoutput on simnetnmea2000. Design of three axis fluxgate digital magnetic compass. Connect rfc35r robnet connector to the control unit or another available robnet input. Magnetometers were also a component instrument on the mercury messenger mission. In this thesis we have developed a new planar micro fluxgate magnetometer. This system is composed of a vector helium and fluxgate magnetometers. Sep 03, 2003 like the traditional magnetic compass, the more modern fluxgate compass also detects earths magnetic field, but it measures it electronically rather than merely pointing in the direction of the field. Drv425 data sheet, product information and support. Magnetic compass systems our magnetic compass equipment has evolved over many years to provide accurate and reliable compass systems. The design is suitable for any application where a distance measurement, even through nonmagnetic materials, is needed and noncontact, wearfree.
Attach the display head to the bulkhead using the fixing studs 2 and 2. Jan 01, 2003 an improved fluxgate compass jan 1, 2003. You have just purchased one of the most advanced electronic compass sensors available today. Used in advanced measurement gear for many years, magne. The compass transmit the heading even if the autopilot is switched off. The developed sensor is a fully integrated device based on cmos process that provides. The developed sensor is a fully integrated device based on cmos. Automatic compensation of the vdo compass all onboard iron masses of a ship are more or less magnetic and influ ence the compass. Rfc35 contains a main pcb onto which the fluxgate sensor is mounted. The processor monitors the coriolis force output by the solidstate rate gyroscope and stabilizes the compass heading. What i mean by that is if you coil any conductor you can create a magnetic field this is the basis of how a fluxgate compass works. The mounting location must be free from any magnetic influence vhf, high power cables, radar, etc. Installation page installing the fluxgate compass page 14 page 15 siting of the display head page 16 mounting the display. Maintain a permanent watch and regularly check all around for other vessels and obstacles to navigation no matter how clear the sea may appear a dangerous situation can develop rapidly.
Like the traditional magnetic compass, the more modern fluxgate compass also detects earths magnetic field, but it measures it electronically rather than merely pointing in the direction of the field. Fluxgate compass test the first part of troubleshooting a heading issue associated with a magnetic north seeking compass is to ensure that items capable of producing a magnetic field have neither been positioned nor installed within 3 of the magnetic north seeking compass. Kerkhoff mesa research institute university of twente p. Transmitting heading device with enhanced stability by a. At the time of its development it was hailed as the most significant compass development in 4000 years. Box 217 7500 ae enschede, the netherlands abstract a fully integrable electronic compass has been designed based on the pulse position method, using micromachined fluxgate magnetic. A dual technique magnetometer is part of the cassinihuygens mission to explore saturn. Fluxgate compasses cant tell north from south until calibrated.
1223 989 498 50 129 896 1166 785 439 1099 452 560 153 1394 927 1536 209 871 1471 1296 1042 391 508 1096 821 1195 240 854 956