Course Display Board (Signal Converter)
This course display board converts position signals from the GPS navigation system into display signals with a signal converter to let passengers on board know where their ship is sailing on its normal course. The display board uses high-luminance light emitting diodes (LEDs) arranged on the chart of the beard. This display board can contribute to improved service to passengers traveling regular routes.
■Features of the display board include:
(1) The display is well visible and easy to understand.
(2) As it uses LEDs, there is no need to replace light bulbs.
(3) The display board can steadily operate and display the ship's position even in stormy weather.
(4) A single signal converter can control up to 32 course display boards.
■Main Particulars
1. Course Display Board
(1) Configuration:
LED lamps to indicate the present position of the ship are arranged on a map depicting its course housed in an aluminum box, and a printed circuit board to control the display and a power supply unit for these items is built into the box.
(2) Display:
40 high-luminance LEDS (colored in orange for positions at sea and green for positions in port)
(3) Function:
Position signals from GPS are converted by the signal converter into display signals, which indicate the present position of the ship.
(4) Power supply:
A.C. 100 to 120 V, 50/60 Hz
(5) Dimensions:
500 mm (l) × 500 mm (w) × 100 mm (h)
(6) Mode of fitting:
Hung on a wall on board (indoors)
(7) Protection:
Non-waterproof (IP 20)
2. Signal Converter
(1) Configuration:
A printed circuit board to convert position signals from GPS into display signals and LED lamps to monitor the present State of received signals are housed in an aluminum box, and a power supply unit for these items is built into the box.
(2) Function:
GPS position signals delivered from the hull over a current loop are converted into display signals, which are transmitted to the display board. The overall state of the system is displayed with LED lamps on the surface of the body in the following way:
・Power supply being received: …Green LED
・GPS signals being received: …Green LED
・GPS signals outside the displayed course range: …Orange LED
・GPS signals abnormal: …Orange
(3) Power supply:
A.C. 100 to 120 V, 50/60 Hz
(4) Dimensions:
250 mm (1) × 250 mm (w) × 100 mm (h)
(5) Mode of fitting:
Hung on a wall on board (indoors)
(6) Protection:
Drip-proof (IP 22)
3. Common Specifications
(1) Assumed environmental conditions:
Class 1 of JIS FO416
・Temperature: …20 to 30°
・Relative humidity: …50 to 80%
・Vibration: …1.5 m/s or less (0.15 G or less)
・Angle of inclination: …1.50 laterally, 5° vertically
・Power fluctuation tolerance: …+6% to -10% for voltage, ±5% for frequency
(2) Communication between course display board and signal converter
・Signal form: …RS-485
・Communication method: …Serial transmission (two-way)
・Transfer speed: …9,600 bit/sec
・Synchronization system: …Start-stop transmission
