Method for drawing paper chart based on active electro-magnetic induction pen

Abstract

The invention relates to a method for drawing a paper chart based on an active electro-magnetic induction pen. The method is characterized by comprising the following steps: triggering a starting point on the paper chart by a pen point of the active electro-magnetic induction pen and sending an electro-magnetic signal frequency F1; extracting a coordinate of the starting point by a digital plate; triggering a target point by the pen point of the active electro-magnetic induction pen and sending an electro-magnetic signal frequency F2; extracting the coordinate of the target point by the digital plate; operating a ship route drawing button of the active electro-magnetic induction pen and sending an electro-magnetic signal frequency F4; and drawing a ship route according to the recorded coordinate of the starting point and the coordinate of the sequential target point after the signal is detected by the digital plate. According to the invention, an electro-magnetic oscillation signal in a specific frequency is sent by the active electro-magnetic induction pen, an X / Y axial antenna array on the digital plate is used for receiving the signal, a processing module is used for processing and calculating the received signal, the specific drawing operation is completed and the quick positioning for the target is realized, so that the picking accuracy for the position information is increased and the target tracking and posture display capacities are promoted.

Description

technical field [0001] The invention belongs to the technical field of a ship chart drawing platform, in particular to a paper chart drawing method based on an active electromagnetic induction pen. Background technique [0002] From the early 1990s, my country began to introduce track instrument equipment, and developed into chart plotting station equipment on the basis of track instrument equipment. The chart plotting station equipment is mainly used in conjunction with paper charts. The local ship, target or waypoint can be positioned by the calibrator, and the position information can be indicated on the paper chart, and the digital planned route can be generated and plotted digitally. on paper charts. [0003] The traditional chart plotter cooperates with the digitization board through the electromagnetic coil of the scaler. The electromagnetic coil of the scaler is a passive coil, which generates current through electromagnetic induction when moving, and the digitizati...

AI Technical Summary

Problems solved by technology

Due to the principle of electromagnetic induction, the scaler must move to induce current. The existing problems are: first, there is a minimum threshold limit when positioning the coordinates; second, the positioning speed is slow, and the multi-target tracking switching operation is inconvenient.

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