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Electronic compass with self-correcting function

An electronic compass and self-calibration technology, applied in compass, measuring device, surveying and navigation, etc., achieves the effect of simple structure, improving measurement accuracy and eliminating discrete errors

Inactive Publication Date: 2012-07-18
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a self-correcting electronic compass to solve the problem in the prior art that the electronic compass needs to be rotated anytime and anywhere to collect and compensate the magnetic field information in the environment during navigation.

Method used

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  • Electronic compass with self-correcting function
  • Electronic compass with self-correcting function

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Embodiment Construction

[0023] The present invention comprises a circuit board, a circuit part and a magnetic induction sensor group, the circuit part and the magnetic induction sensor group are installed on the circuit board, and the magnetic induction sensor group is composed of at least 4 magnetic induction sensors distributed at equal angles along a 360-degree circular ring, such as Figure 4 As shown, a peripheral circuit is provided corresponding to each magnetic induction sensor in the circuit part, and two magnetic induction sensors separated by an angle of 90 degrees are connected to the same peripheral circuit.

[0024] A sensor for measuring the inclination of the circuit board and a magnetic induction sensor for measuring the magnitude of the magnetic field perpendicular to the plane of the circuit board are also provided on the circuit board.

[0025] The magnetic induction sensor is a tunnel junction magnetic induction sensor, a giant magnetoresistance magnetic induction sensor, an aniso...

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Abstract

The invention discloses an electronic compass with a self-correcting function. The electronic compass comprises a circuit board, a circuit part and a magnetic induction sensor group, wherein the circuit part and the magnetic induction sensor group are arranged on the circuit board; the magnetic induction sensor group consists of at least four magnetic induction sensors which are distributed along a 360-degree circle at an equal angle interval; a peripheral circuit is arranged in the circuit part corresponding to each magnetic induction sensor; and two magnetic induction sensors between which an included angle of 90 degrees is formed are connected to the same peripheral circuit. Magnetic field information in an environment is not required to be acquired and compensated by rotating the electronic compass, and the electronic compass is convenient to use; meanwhile, the interference resistance of the electronic compass to an ambient interference magnetic field is effectively improved; and moreover, the electronic compass has a simple structure, the measurement accuracy can be improved further, and the number of corresponding magnetic induction sensors can be set according to the accuracy requirement.

Description

technical field [0001] The invention relates to an electronic compass navigation device for distinguishing directions according to the earth's magnetic field, in particular to an electronic compass design with a self-correcting function. Background technique [0002] Navigation systems are widely used in various fields including aircraft, ships, and vehicles. Compared with the current commonly used navigation technologies such as GPS navigation and gyroscope navigation, the magnetic electronic compass navigation technology has the advantages of small size, low cost, no cumulative error and intelligence. At present, the miniaturized magnetic electronic compass has been widely used in intelligent Mobile phones, car navigation and positioning, field exploration and search and rescue, geological exploration and various military applications have huge market value and potential. [0003] The principle of the electronic compass is to use the earth's magnetic field for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C17/20G01C17/38
Inventor 王磊蔡轲张超荀盼盼李明
Owner ANHUI UNIVERSITY
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