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Electronic compass without dip angle compensation

An electronic compass and inclination compensation technology, applied in the field of navigation, can solve problems such as large errors, motion platforms that cannot be used with shaking or vibration, and achieve the effect of avoiding the influence of acceleration

Pending Publication Date: 2020-05-08
湖北麦格森斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the disadvantages that the current two-dimensional magnetic sensor generally uses a three-axis accelerometer to compensate the inclination angle, which has a large error under dynamic conditions and cannot be applied to a moving platform with shaking or vibration. Compensated two-dimensional magnetic sensor solution to adapt to the motion platform with shaking or vibration, and has high precision

Method used

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  • Electronic compass without dip angle compensation
  • Electronic compass without dip angle compensation
  • Electronic compass without dip angle compensation

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Embodiment Construction

[0020] like Figures 1 to 4 As shown, an electronic compass without tilt compensation is characterized in that it includes a sealed casing 4 and an external circuit 3, a gimbal 1 is arranged inside the sealed casing 4, a two-dimensional magnetic sensor is arranged on the gimbal 1, and a two-dimensional The magnetic sensor is connected with the external circuit 3 outside the housing 4 through the internal circuit 2 in the manner of wireless power supply and wireless communication. The gimbal 1 keeps the two-dimensional magnetic sensor in a horizontal state in real time. No matter when the housing 4 is tilted in any posture, due to the effect of the gravitational moment, and according to the principle of the lowest center of gravity, the two-dimensional magnetic sensor is always in a horizontal balance state, thus Enables the two-dimensional magnetic sensor to accurately measure the H of the local magnetic field X and H Y Two horizontal components. When the heading angle is c...

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Abstract

Provided in the invention is an electronic compass without dip angle compensation. The electronic compass comprises a sealed shell and an external circuit. A gimbal is arranged in the sealed shell, atwo-dimensional magnetic sensor is arranged on the gimbal, and the two-dimensional magnetic sensor is connected with the external circuit outside the shell through a wireless power supply communication internal circuit. According to the invention, the error of the existing electronic compass under the dynamic condition is large and the electronic compass can not be applied to a motion platform with shaking or vibration; in order to overcome the defects, the invention provides a two-dimensional magnetic sensor scheme without dip angle compensation to adapt to the motion platform with shaking orvibration; and the electronic compass has the advantages of higher precision and no limitation of the inclination posture of a mounting platform.

Description

technical field [0001] The invention relates to an electronic compass without tilt compensation, which belongs to the technical field of navigation. Background technique [0002] The compass is an ancient navigation and orientation tool, which is widely used in vehicles, ships, aircraft and other vehicles or platforms. Compass can be divided into two categories: one is the traditional pointer compass, its principle is to use the inherent pointing characteristics of the magnetic needle in the earth's magnetic field to indicate the direction; the other is the electronic compass, its principle is to use the three-axis magnetic sensor to measure The X, Y, and Z three-axis magnetic signals are collected by AD, and then combined with the tilt angle (pitch angle and roll angle) provided by the three-axis accelerometer (or inclinometer), a mathematical model is established to solve the heading angle data. [0003] The pointer compass is usually used under horizontal conditions. Wh...

Claims

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Application Information

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IPC IPC(8): G01C17/32
CPCG01C17/32
Inventor 不公告发明人
Owner 湖北麦格森斯科技有限公司