Method for reading paper chart point longitude and latitude of extensible mechanical arm based on single grid ruler

A robotic arm and single grating technology, applied in the direction of optical devices, electromagnetic wave re-radiation, instruments, etc., can solve the problems of cumbersome operation of latitude and longitude values, improve reading efficiency and accuracy, simplify the reading process, and reduce reading effect of difficulty

Inactive Publication Date: 2017-09-05
TIANJIN NAVIGATION INSTR RES INST
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Problems solved by technology

[0004] The present invention aims at the disadvantage of cumbersome operation of measuring the latitude and longitude of a certain point on the paper chart. Through the measuring mechanism similar to the manipulator, the computer quickly calculates the latitude and longitude information

Method used

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  • Method for reading paper chart point longitude and latitude of extensible mechanical arm based on single grid ruler
  • Method for reading paper chart point longitude and latitude of extensible mechanical arm based on single grid ruler
  • Method for reading paper chart point longitude and latitude of extensible mechanical arm based on single grid ruler

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Embodiment Construction

[0021] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

[0022] A method for reading latitude and longitude of paper chart points based on a single grating ruler retractable mechanical arm, comprising the following steps:

[0023] ⑴. Obtain the position coordinates of the picked position point in the Cartesian coordinate system of the paper chart:

[0024] Establish a Cartesian coordinate system XOY along the lower edge and left edge of the effective area of ​​the paper chart, the right direction is positive, the front direction is positive, and the unit is the common length unit; Above, the reference of the absolute grating is along the x-axis direction. The computer reads the angle information α of the mechanical arm through the reading head of the absolute grating,...

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Abstract

The invention relates to a method for reading paper chart point longitude and latitude of an extensible mechanical arm based on a single grid ruler. The method comprises the following steps that 1, position coordinates of a pickup point in a paper-chart rectangular coordinate system are known according to the angle and length of the extensible mechanical arm; 2, according to the position coordinates of the pickup point in the rectangular coordinate system and basic information of a paper chart, longitude and latitude information of the pickup point is calculated. By adopting the method, the longitude and latitude information of a certain point position on the paper chart can be rapidly read by a computer by utilizing a position measurement mechanism similar to the mechanical arm, accordingly the complicated defects of a traditional calculating method are overcome, the process of reading the longitude and latitude information of the certain point position on the paper chart is simplified, the reading difficulty is reduced, and the reading efficiency and precision are improved.

Description

technical field [0001] The invention relates to the technical field of longitude and latitude information measurement of paper chart points on a ship chart drawing table, in particular to a method for reading longitude and latitude of paper chart points based on a single grating ruler retractable mechanical arm. Background technique [0002] When the ship is sailing, it is necessary to mark the position of the ship on the paper chart, and then observe on the paper chart whether there are obstacles to navigation, shoals and other factors that affect the safety of navigation near the ship, and obtain the obstruction of navigation from the paper chart in time. The longitude and latitude information of other marks such as objects, anchor positions, turning points, etc. are used to calculate their bearing and distance from the own ship. [0003] The current method of using paper charts to calculate the azimuth distance of obstructions, anchors, turning points and other marks from...

Claims

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Application Information

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IPC IPC(8): G01B11/26G01S17/08G01B11/00
CPCG01B11/26G01B11/002G01S17/08
Inventor 孙高翔刘季陈凯
Owner TIANJIN NAVIGATION INSTR RES INST
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