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Three-axis TMR magnetometer for UAV aeronautical magnetic survey platform

An aerial magnetic survey and magnetometer technology, which is used in unmanned aerial vehicles, electrical/magnetic exploration, radio wave measurement systems, etc., can solve the problem of low sensitivity, achieve high magnetic field resolution, ensure accuracy, and small volume effect

Inactive Publication Date: 2019-02-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a three-axis TMR magnetometer applied to the UAV aerial magnetic survey platform to solve the above-mentioned problems

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  • Three-axis TMR magnetometer for UAV aeronautical magnetic survey platform

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Embodiment Construction

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] The three-axis TMR magnetometer applied to the UAV aerial magnetic survey platform consists of five parts: a three-axis TMR sensor, an analog-to-digital converter, an attitude sensor, a storage module, and a processor. The overall structure is as follows: figure 1 shown.

[0021] The three-axis TMR magnetometer sensor includes three two-two orthogonal TMR magnetic sensors, which are used to measure the three components of the geomagnetic field. The output of the three-axis TMR magnetometer sensor is a DC voltage signal, and the output voltage fluctuates with the geomagnetic field. The signal follows fluctuations, and its output voltage signal has a linear relationship with the magnetic field strength in its sensi...

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Abstract

The invention applies to a three-axis TMR magnetometer for a UAV aeronautical magnetic survey platform. The magnetometer comprises a three-axis TMR magnetometer sensor, an analog-to-digital converter,an attitude sensor, a storage module and a processor, wherein the three-axis TMR magnetometer sensor measures three components of a geomagnetic field and outputs a DC voltage signal; the analog-to-digital converter receives the DC voltage signal and converts the signal into a digital signal for transmission to the processor; the attitude sensor acquires the UAV flight attitude data for flight attitude correction and compensation, and transmits the attitude data to the processor; the storage module stores the magnetic field data and the attitude data received by the processor; and the processor controls the analog-to-digital converter to acquire the DC voltage signal, convert the signal into magnetic field data, and store the magnetic field data and the attitude data in the storage module.The three-axis TMR magnetometer has small volume and low power consumption, improves the accuracy of aeromagnetic measurement, has a fast measurement speed, and is easy to install and carry the UAV.

Description

technical field [0001] The invention specifically relates to a three-axis TMR magnetometer applied to an unmanned aerial vehicle magnetic survey platform. Background technique [0002] At present, scalar magnetometers such as proton magnetometers (including ordinary proton magnetometers and Overhauser magnetometers) and optical pump magnetometers are mostly used in airborne magnetic surveys to measure the total field strength of the geomagnetic field. But the geomagnetic field is a vector field, and the three-component measurement (vector measurement) can obtain more information about the magnetic field. As the most commonly used vector magnetometer, the fluxgate magnetometer is also gradually used in the measurement of aviation magnetic field components. However, the performance of the fluxgate sensor is greatly affected by the volume, and the sensitivity is greatly reduced when it is miniaturized. After development, aeromagnetic surveying began to enter the stage of refin...

Claims

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Application Information

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IPC IPC(8): G01V3/40B64C39/02
CPCG01V3/40B64C39/02B64U2101/00
Inventor 董浩斌王冠中葛健罗望刘欢张骋
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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