Passive direct laser rudder angular position sending device

Abstract

The invention relates to a passive direct laser rudder angular position sending device, and relates to a rudder angular position sending device which rotates with a rudder and is used for reading and sending rudder angular position information directly. The rudder angular position sending device consists of a laser recognizer, an identification piece, a circuit board, a setter, an interface, a shell and a cavity cover, wherein the laser recognizer, the identification piece and the circuit board are sealed in the shell; the setter, the laser recognizer and the interface are connected with the circuit board; the setter and the interface are formed in a cavity on the surface of the shell; the cavity cover capable of being opened is arranged above the setter and the interface, so that the setter and the interface are sealed in the cavity by the cavity cover; the identification piece is directly fixed on a rudder rod; the laser recognizer is fixed; and a read port of the laser recognizer is opposite to an identification on the non-horizontal identification piece in a non-vertical mode. The rudder angular position sending device is high in accuracy and is suitable to be used in various occasions for angular position detection.

Description

Technical field: [0001] The invention relates to an angular position sending device, in particular to a ship rudder angular position sending device. Background technique: [0002] The rudder instrument is a necessary instrument and equipment for ships of various sizes navigating on water. The rudder instrument displays the position of the rudder based on the information of the rudder angle sending device. At present, the rudder angle sending device uses a parallelogram The opposite sides are kept synchronously and the linkage mechanism of the parallel principle drives devices such as potentiometers, Hall elements, variable capacitors, and rotary encoders to rotate synchronously with the rudder. These devices will generate magnetic, electric, pulse, etc. values ​​when rotating. Change, use the change of these values ​​to simulate the angle of the rudder change. [0003] In addition to the problems of small transmission distance, poor anti-interference, and easy wear and tear...

AI Technical Summary

Problems solved by technology

[0004] 1. Even if it is a very precise linkage mechanism, it is inevitable to accumulate errors and conduction errors, and the accuracy is difficult to reach 0.1 degrees

[0005] 2. These devices are not specially designed for angular position sensing, the linearity of numerical changes is not perfect, and it is difficult to accurately simulate the changing angular position of the rudder

[0006] 3. Because these devices do not directly read the data of angle changes, nor generate usable digital information, but convert analog signals into digital signals, which not only affects the accuracy, but also affects the overall response time

[0007] 4. It is difficult to adjust the zero position. Although the detection of the rudder angle of the ship is basically not greater than 180 degrees, the zero position needs to be determined. The existing sensor devices for angle detection can rotate 360 ​​degrees, but except for the rotary encoder It cannot detect 360 degrees, and there is a numerical blind zone, which adds a lot of trouble to the determination of the zero position.

But still can not overcome the above defects

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