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Portable vector magnetic field sensing device based on mobile terminal, and detection method thereof

A mobile terminal and vector magnetic field technology, applied in the field of magnetic field sensors, can solve the problems of inability to perceive the direction information of the magnetic field, inconvenient use, and bulky, and achieve the effects of easy access, improved accuracy, and small size

Pending Publication Date: 2019-04-09
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not difficult to find by summarizing that most of the reported sensors still belong to the category of scalar magnetic field sensing, that is, they can only detect the strength of the magnetic field but cannot perceive the direction information of the magnetic field; in addition, the devices used in the current research are bulky , expensive and inconvenient to use

Method used

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  • Portable vector magnetic field sensing device based on mobile terminal, and detection method thereof
  • Portable vector magnetic field sensing device based on mobile terminal, and detection method thereof
  • Portable vector magnetic field sensing device based on mobile terminal, and detection method thereof

Examples

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Effect test

Embodiment 1

[0031] A portable vector magnetic field sensing device based on a mobile terminal, comprising a sensing unit, a mobile terminal device and an accessory device electrically connected to the mobile terminal device; the sensing unit is used to sense changes in the external vector magnetic field, including side Polishing optical fiber and ferrofluid around the side polishing optical fiber; the mobile terminal device includes an LED for emitting an optical signal to the sensing unit, a camera for capturing the optical signal output by the sensing unit, and a A processing device for processing images captured by the camera; the accessory device is used to output the light signal of the mobile terminal device and receive the light signal fed back by the sensing unit.

[0032] Preferably, the polished optical fiber is provided with a glass capillary and optical ultraviolet glue, and the magnetic fluid is sealed and wrapped around the side polished optical fiber through the glass capill...

Embodiment 2

[0052] This embodiment provides a portable vector magnetic field sensing device based on a mobile terminal, including a sensing unit, a mobile terminal device, and an accessory device that can be electrically connected to the mobile terminal device; the sensing unit is used to sense an external vector magnetic field Changes, including side-polished optical fiber and magnetic fluid surrounding the side-polished optical fiber; the mobile terminal device includes an LED for emitting an optical signal to the sensing unit, and is used to capture the output of the optical signal from the sensing unit A camera, and a processing device for processing images captured by the camera; the accessory device is used for outputting an optical signal of the mobile terminal device and receiving an optical signal fed back by the sensing unit.

[0053] Preferably, the polished optical fiber is provided with a glass capillary and optical ultraviolet glue, and the magnetic fluid is sealed and wrappe...

Embodiment 3

[0062]A portable vector magnetic field sensing device based on a mobile terminal, comprising a sensing unit, a mobile terminal device and an accessory device electrically connected to the mobile terminal device; the sensing unit is used to sense changes in the external vector magnetic field, including side Polishing optical fiber and ferrofluid around the side polishing optical fiber; the mobile terminal device includes an LED for emitting an optical signal to the sensing unit, a camera for capturing the optical signal output by the sensing unit, and a A processing device for processing images captured by the camera; the accessory device is used to output the light signal of the mobile terminal device and receive the light signal fed back by the sensing unit.

[0063] Preferably, the polished optical fiber is provided with a glass capillary and optical ultraviolet glue, and the magnetic fluid is sealed and wrapped around the side polished optical fiber through the glass capilla...

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Abstract

The invention relates to the technical field of the magnetic field sensor, and specifically discloses a portable vector magnetic field sensing device based on a mobile terminal. The device comprises asensing unit, a mobile terminal device and an accessory device connected with the mobile terminal device; the sensing unit is used for sensing the change of an external vector magnetic field, and comprises a side-polished fiber and magnetic fluid surrounding the side-polished fiber; the mobile terminal device comprises an LED for transmitting a light signal to the sensing unit, a camera for capturing a light signal output by the sensing unit, and a processing device for processing an image captured by the camera. The change of the external to-be-detected magnetic field is sensed by arrangingthe sensing unit, the light signal transmitted to the sensing unit is transmitted and received through the mobile terminal device; the sensing unit and the mobile terminal device are connected by arranging the accessory device. The device realizes the precise detection of the vector magnetic field, and the device has the advantages of being small in volume, convenient to carry and low in cost.

Description

technical field [0001] The invention relates to the technical field of magnetic field sensors, in particular to a portable terminal-based vector magnetic field sensing device and a detection method thereof. Background technique [0002] Sensing technology, communication technology and computer technology together constitute the three pillars of the modern information industry, which play the roles of "sense", "nerve" and "brain" in the information system respectively. Among them, sensing technology, as a key component of information acquisition, is the basis for subsequent information transmission and processing, and its importance is self-evident. [0003] As one of the basic physical quantities, the magnetic field is of great significance to measure it accurately. For example, measuring the geomagnetic anomaly caused by submarines is one of the effective ways to search, alert and identify submarines. Traditional electrical magnetic field sensors such as Hall magnetometers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/032
CPCG01R33/0052G01R33/032
Inventor 陈耀飞罗云瀚陈哲蒋竹鹏熊鑫胡诗琦张雅馨卢惠辉关贺元张军
Owner JINAN UNIVERSITY
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