JP2001183160A - Gps plotter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the direction of a ship becomes unknown in the case that the ship is stopping on the sea and that the moving speed of the ship is slow, for example, when the ship is drifted by the tide even if radio waves are received by a GPS antenna and the locations of a mark 2 and the mark 3 of the ship are accurately displayed on a display part and to solve the defect that the direction of the movement of the ship is known only after seeing the display of the movements from the mark 2 and the mark 3 of the ship to the next marks. SOLUTION: A GPS receiver 4 is connected to the GPS antenna 3, and the output of the GPS receiver 4 is inputted to a computation control part 5. A magnetic compass 6 is connected to the computation control part 5, and the display part 7 is connected to the computation control part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a GPS plotter for displaying the position and orientation of a ship.

[0002]

2. Description of the Related Art Generally, the current GPS plotter
The radio wave from the satellite is received by the PS antenna, the radio wave is calculated by the calculation control unit, and the accurate position of the fishing boat is displayed on the display unit with the mark 2A with respect to the land 1, as shown in FIG.
A line 2B indicating the traveling direction of the ship is displayed on the mark 2A, and the position and direction of the ship are displayed by a ship-shaped mark 2C as shown in FIG.

[0003]

SUMMARY OF THE INVENTION However, GPS
Even if radio waves are received by the antenna and the position of the ship is accurately displayed on the mark 2A on the display and the mark 2C on the ship, the moving speed of the ship is such that the ship stops at sea or drifts by the tide If the ship is slow, it is difficult to know the direction of the ship, and the mark 2A and the ship's mark 2C have the disadvantage that the direction in which the ship moves can only be determined by looking at the next mark. Was.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a GPS antenna receives radio waves from a satellite and inputs them to a GPS receiver. The GPS receiver calculates the current position information of the ship using the input radio waves. The calculated position information is input to a calculation control unit, the direction indicated by a magnetic compass attached to the ship is input as an electric signal to the calculation control unit, and the calculation control unit calculates the position and direction of the ship. Is displayed on the display unit.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention combines a GPS plotter with a magnetic compass and displays the position and direction of the ship in real time, so that when the direction of the ship changes due to the tide, Since the direction of travel can be seen at a glance, it is possible to prevent the ship from moving in the wrong direction, and to prevent an unexpected accident caused by, for example, a reef nearby and inadvertently advancing the ship.

[0006]

FIG. 1 is a block diagram of a GPS plotter according to an embodiment of the present invention. A GPS receiver 4 is connected to a GPS antenna 3, and the output of the GPS receiver 4 is input to an arithmetic control unit 5. A magnetic compass 6 is connected to the arithmetic control unit 5,
Further, a display unit 7 is connected to the arithmetic control unit 5.

[0007] In the GPS plotter of the present embodiment configured as described above, when a radio wave is received from a satellite by the GPS antenna 3, the radio wave is converted into an electric signal and input to the GPS receiver 4, and the position of the ship is calculated. The direction of the ship is input to the arithmetic control unit 5 from the magnetic compass 6 mounted on the ship, and the position signal from the GPS receiver 4 and the direction of the ship from the magnetic compass 6 are input to the arithmetic control unit 5. According to the signal, as shown in FIG. 2, the ship 8 is displayed as a ship shape on the display unit 7, and it is possible to see at a glance which direction the ship 8 is facing on the display.

Therefore, if the reef mark 9 is displayed on the map of the display unit 7, the fishing hook is
It is possible to determine at a glance in which direction the vehicle 8 should be turned, and it is also possible to easily determine which direction the boat 8 should be turned when maneuvering.

[0009]

As described above, in the GPS plotter of the present invention, the position and orientation of the ship can be displayed on the display unit by combining the GPS receiver and the magnetic compass. When operating, or while operating a ship while flowing on the tide, the position and orientation of the ship can be checked at a glance, so that the next time the ship moves, the ship can be surely moved in the target direction. There is an advantage that shortage of contact with a nearby reef or collision with another ship can be avoided.

[Brief description of the drawings]

FIG. 1 is a block diagram of a GPS plotter according to one embodiment of the present invention.

FIG. 2 is a diagram showing a display on a display unit of FIG. 1;

FIG. 3 is a diagram showing a display on a conventional display unit.

FIG. 4 is a diagram showing a display on a conventional display unit.

[Explanation of symbols]

 3 GPS antenna 4 GPS receiver 5 Operation control unit 6 Magnetic compass 7 Display unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F029 AA04 AB01 AB07 AC02 AC04 5H180 AA25 FF05 FF07 FF27 5J062 AA03 BB02 CC07 FF06 HH03 5J083 EA12 EA36 EA42

Claims (1)

[Claims] 1. A radio wave from a satellite is received by a GPS antenna and input to a GPS receiver.
The current position information of the ship is calculated by the PS receiver, the calculated position information is input to the calculation control unit, and the direction indicated by the magnetic compass attached to the ship is input to the calculation control unit as an electric signal, A GPS plotter wherein the position and orientation of the ship are calculated by the arithmetic control unit and displayed on a display unit.