Autopilots The first self-report of a pilot? T? established in Appendix? 1920 are controlled? l yachts mod? it, but it was not until 1948 that the principle? t? applied? ? yachts? great? scale. Stand? the bar for long p? periods, monitoring instruments and keeping a good look, can be brought tr? s tiring. An autopilot relieves the helmsman to steer the correct course leaving him the freedom? maintaining watch appropriate? e. The autopilot can be brought r? Gl? be? lead a compass or course by the wind. A fluxgate compass or vane? Electronic feeds of information? a microprocessor which then makes rudder movements n? necessary for the return of the ship? their required courses. The power m? Mechanics is applied? E on the rudder, or activators? Electrical linen? Areas, hydraulic pumps or rotary discs. GPS / card readers can? Be used? S to enter navigation instructions to the autopilot. Chargers will load completely? Ment batteries and extending their life. Chart Plotters G? N? Ally, a card reader consists of an antenna mount? High on the boat, to track GPS signals and a unit? display site? ? one or the other? the navigation station or the ship’s rudder. The boat position is sent? E of antenna? the unit? display that? turn, shows graphically on the map. The table itself m? Like me? sound? paper equivalent and show the depth, land mass, aids? such as navigation button? es and potential hazards in the form of? tiles and obstructions. The user can add checkpoints? the map and zoom and rear? re the? notch. Card readers can? be connected? s? drive an autopilot and / or send given? es GPS? a d? fish detector or radar. They can? Also interface with a laptop enabling complex passage planning? how far the boat is then input? in the card reader after? s his arrival? e to the boat. Magnetic compass? Tick transmission work like traditional compasses using magnets to d? Finished directing ships to the magnetic field? Tick the land which they then send the boats towards the display? Mail. They are steering easier than conventional compasses because they display more stable position and does not suffer? D? Timing? that occurs during a turn. They can interface with card readers, autopilots and radar. Fluxgate compass compos? two pieces of mat? rial magnetic? tick easily saturated? coiled coil?’re around them in opposite directions? es. The alternating current is pass? ? through the coils and the mat? the material is saturated? in one direction and then another. The magnetic field? Tick affects land? G? Rately the moment o? saturation occurs, more t? t in a coil, then the other. The diff? Ence is then calculated? taking an output proportional to the magnetic field? tick of the earth. They are pr? Cis? 0. 1 of a degree?. Their output can? Be displayed? E num? Ically the helmsman or they can interface with autopilots and radar card readers. Sounders work on the m? Same principle as sonar. A transducer? Is a bundle? Strait of sound? High en? accordingly. This is reflected by solid objects and of? Limit between the transmission and r? Exception of the eye is measured cho? E. The speed of sound in water is known and if the range or distance from the bottom of the sea can be brought calculation? E. Which is then displayed? E m? Very. Forward Looking Sonar (FLS) enables you to see the underwater hazards before you r? Alit? above them. A typical range of FLS is 150 m? Very. An Emergency Position Indicating Radio Beacon (EPIRB) is a pi? This for? Equipment jerk? U to float freely from one ship to? Braid. It then sends a radio signal that can? To be? Tect? Are the search and rescue satellite Assist? E Computer (SARSAT) satellites. They convey a message? a ground station that can? turn initiate an op-operation of search and rescue. FOR detectors use Fish m? Me that sonar technology. A? Strait sounds high beam en? Frequency is transmitted by a sensor, which is reflected by solid objects such as the seabed. In? Extends this technology to provide displays that show pollsters o? the fish are and they can diff? rencier fish-app? ts and sp? these larger Global Positioning System (GPS R? Receivers) – This system? Me a? T? con? u? origin? for military purposes and is poss? d? and achievement? by the minist? re am? Rican of D? defense. 24 satellites are arranged? S in a birdcage? Worldwide, they are positioned? S in such a manner? Re that anywhere? On the surface of the earth line of sight can be brought? Table ? a minimum of 4 satellites. A fix is obtained by measuring pr? precision the distance between a satellite and the r? GPS receiver? a moment pr? cis. Because the exact position of the satellite is known, these distances provide position lines which are converted by a microprocessor in the r? GPS receiver? read outs of latitude and longitude. The log is used? to measure the speed of boats in the water. A wheel? vanes or pm? running, mountain? under the waterline is activated? by d? bit of water, what g? n? re impulses? electrical which are transmitted? a microprocessor that displays speed and distance traveled. Inverters – On most boats today you will find machines Accessories domestic one kind or another. For Entertainment? t on there? s? sights and chained st? r? o. With the popularity? card readers comes from the PC or laptop. No maintenance? Necessity often use tools? Electric. Croisi? Res could have a machine? washing, dishwasher or microwave. Can be 12V, 24V or 48V supply and a convert? Curia 110 V or 220 V AC. Navtex can perhaps? Be better? To be? Described as a service does? Lex continuously updated? day supply of navigation and information m? t? Orologi areas sp? CIFI? are. A board on the r? Receiver, right? ? 518kHz, the en? Navtex frequency in the world, it is left? on? will either print or display last? res massage send to you by a local station. The service is available till? 400 miles of the c? You. Radar allows you to see what would otherwise be invisible. They offer more benefits in the night and in fog or rain and are of particular value? When re pr? S the c? You or sea routes. They are constituted? S an antenna and a? Notch. The antenna sends a stream of? RF energy is r? Fl? Shit on hard objects. When this? Energy is sent back?, It is converted into a signal that is displayed? user. The antenna rotates every few seconds, the? Screen continuously calculates the direction of the antenna and thus affect pr? Cise of the target is calculated? E. The time is measured? by? energy for? be taken into account and if the distance of the target is? also displayed?. T? L? Satellite phones compounds? an antenna, a modem and a T? l? normal phone. They are food? S by a battery of iridium. Their port? E is everywhere covered by the Inmarsat Mini-M satellite. Voice, fax, email and given? Es can? Be transmitted. No satellite TV? Necessity antenna and well s? R a t?? S vision. The r? Desk is available in a? Footprint? which is low? on EIRP (effective isotropic radiated power? e? equivalent) of a satellite transmission. The ASTRA satellite EUTELSAT with two cover Europe. Nilesat and Arabsat both cover Africa and the Middle East. Good coverage is? Also available in Am? North America, Am? Central America and even Britain ridionale. SSB Radio has a port? E thousands of miles. You will need an FFC license, or? Equivalent in any country you plan to run it. Consumption? Energy? Tick is a considers-operation. Up? 100 Watts can be brought n? Necessary for transmission. SSB radio requires several feet? these to? Equipment. A? Director-r? Receiver in? State to operate SSB, an antenna, it should? Be 8 m? Very long and in practice most boats use a backstay or shroud in order to have? quip? No insulation? sary. An antenna tuner corresponding to the mod? It? Director-r? Receiver. If you want to send an email, you will need? And also a radio modem and computer. The VHF power n? Necessary to transmit is minimal, all games have the possibility? transmission of each 1 Watt or 25 Watts and less? energy needs? be used? e whenever possible. Unlike t? L? Phones that allow? both talking and? listen m? me time most VHF sets require you to press a button? mission before speaking. This is called simplex. Duplex units are available, but are much more expensive. VHF radio waves travel in straight lines, so the antenna needs? be mounted? as high as possible, pr? f? Conference? the t? te m? t ??????????
Posts Tagged ‘Marine’
Marine Electronics
Monday, September 6th, 2010Glossary of Marine Electronics
Wednesday, August 25th, 2010Autopilots The first self-steering ratio has been set up in 1920 to control model yachts but it was not until 1948 that the principle has been applied to large scale yachts. Standing at the bar for long periods, monitoring instruments and keeping a good look, can be very tiring. An autopilot relieves the helmsman to steer the correct course leaving him free to maintain a proper lookout. The autopilot can be set to either steer a compass course or a course by the wind. A fluxgate compass or electronic vane feeds information to a microprocessor which then makes the necessary rudder movements to return the vessel to its required courses. The mechanical power is applied to the rudder by either electric linear activators, hydraulic pumps or rotary discs. GPS / card readers can be used to input navigation instructions to the autopilot. Battery Chargers will keep batteries fully charged thereby extending their working life. Chart Plotters Typically, a card reader comprises an antenna, mounted high on the boat, to track GPS signals and a display unit located either at the navigation station or the helm of ship. The boat position is sent from the antenna to the display unit, which in turn, shows graphically on the map. The table itself looks like its paper equivalent and show depth, land mass, navigational aids such as buoys and hazards in the form of wrecks and obstructions. The user can add waypoints to the map and zoom in and out of the screen. Card readers can be connected to drive an autopilot and / or send data to a GPS fish finder or radar. They can also interface with a laptop enabling complex passage planning to be away from the boat, then walked into the card reader after his arrival at the boat. Transmission Magnetic Compass work like traditional compasses using magnets to determine the direction of the magnetic field of ships land which they then send the boats to the electronic display. They are steering easier than conventional compasses because they display more stable position and do not suffer from “lag” that occurs during a turn. They can interface with card readers, autopilots and radar. Fluxgate compass composed of two pieces of magnetic material easily saturated with coils wound round them in opposite directions. The alternating current is passed through the coils and the material is saturated in one direction and then another. The Earth’s magnetic field affects slightly when the saturation occurs earlier in a coil, then the other. The difference is then calculated by taking an output proportional to the magnetic field of the earth. They are accurate to 0. 1 degree. Their output can be displayed digitally to the helmsman or they can interface with autopilots and radar card readers. Sounders work on the same principle as sonar. A transducer emits a narrow beam of high frequency sound. This is reflected by solid objects and the delay between transmission and reception of the echo is measured. The speed of sound in water is known and if the range or distance from the bottom of the sea can be calculated. Which is then displayed in meters. Forward Looking Sonar (FLS) enables you to see the underwater dangers before you actually above them. A typical range of FLS is 150 meters. An Emergency Position Indicating Radio Beacon (EPIRB) is a piece of equipment designed to float free of a ship in distress. It then sends a radio signal that can be detected by the search and rescue satellite Computer Aided Tracking (SARSAT) satellites. They send a message to a ground station which in turn may initiate a search operation and rescue. Fish finders use the same technology as sonar. A narrow beam of high frequency sound is transmitted by a sensor, which is reflected by solid objects such as the seabed. By developing this technology displays provide pollsters show where fish are and they can not differentiate between baitfish and larger speciesGlobal Positioning System (GPS Receivers) – This system was originally designed for military use and is owned and operated by the U.S. Department of Defense. 24 satellites are arranged in a bird cage “around the world, they are positioned so that anywhere on the surface of the earth line of sight can be set at a minimum of 4 satellites. A patch is obtained by accurately measuring the distance between a satellite and GPS receiver at a particular time. Because the exact position of the satellite is known, these distances provide position lines which are converted by a microprocessor in the GPS receiver to read outs of latitude and longitude. The log is used to measure the speed of boats in the water. A paddle wheel or impeller, mounted below the waterline is turned by water flow, which generates electrical impulses that are transmitted to a microprocessor that displays speed and distance traveled. Inverters – On most boats today you will find domestic equipment of one kind or another. For entertainment there are televisions on board and stereos. With the popularity of card readers is the PC or laptop. Maintenance often requires the use of power tools. Cruise could have a washing machine, dishwasher or microwave. May take 12V 24V or 48V supply and convert it into a stable 110 V or 220 V AC. Navtex can perhaps best be described as a telex service provides continually updated navigation and weather information within specified areas. A board on the receiver, tuned to 518kHz, frequency Navtex worldwide, if left turned on will either print or display the latest massages sent from a local station. The service is available up to 400 miles offshore . Radar lets you see what otherwise would be invisible. They offer more advantages in the night and in fog or rain and are of particular value when close to the coast or sea routes. They are made of an antenna and a screen. The antenna sends a stream of RF energy which is reflected by hard objects. When this energy is returned, it is converted into a signal that appears to the user. The antenna rotates every few seconds, the display continuously calculates the direction of the antenna and so a precise impact of the target is calculated. The time is measured by the energy to be taken into account and if the distance of the target is also displayed . Satellite phones consisting of an antenna, a modem and a regular phone. They are powered by a battery of iridium. Their range is anywhere covered by the Inmarsat Mini-M satellite. Voice, fax, email and data can be transmitted. satellite TV requires an antenna and of course television. The reception is available in a “fingerprint” that is based on EIRP (equivalent isotropic radiated power) of a satellite transmission. EUTELSAT satellites with ASTRA two cover Europe. Nilesat and Arabsat cover both Africa and the Middle East. Good coverage is also available in North America, Central and South America. SSB Radio has a range of several thousand miles. You need an FFC license, or equivalent in any country you plan to run it. Energy consumption is a consideration. Up to 100 Watts may be necessary for transmission. SSB radio requires several pieces of equipment. A transceiver capable of operating SSB, an antenna, it must be 8 meters long and in practice most boats use a backstay or shroud for the purpose of equipping the necessary insulation. A antenna tuner, the model transceiver. If you want to send an email, and you will also have a radio modem and computer. VHF power needed to transmit is minimal, every game has the possibility of transmission each 1 Watt or 25 Watts and less energy should be used whenever possible. Unlike phones that can both speak and listen at the same time most VHF sets require you to press a button issue before speaking. This is called simplex. Duplex sets are available but are much more expensive. VHF radio waves travel in straight lines, so the antenna must be mounted as high as possible, preferably masthead.
