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Helmet attitude measuring method, device and system

A measurement method and helmet technology, which is applied to measurement devices, navigation through speed/acceleration measurement, surveying and navigation, etc., can solve problems such as low accuracy, poor reliability, and slow update rate, so as to improve measurement accuracy and dynamic performance and the effect of eliminating accumulated errors

Active Publication Date: 2018-11-30
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a helmet attitude measurement method, a measurement device and a measurement system, which are used to overcome the defects of slow update rate, poor reliability and low precision in the prior art, improve the update rate, reliability and precision of the helmet attitude, and improve the aircraft's performance. combat performance

Method used

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  • Helmet attitude measuring method, device and system
  • Helmet attitude measuring method, device and system

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Experimental program
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Effect test

Embodiment 1

[0041] Please refer to Figure 1 to Figure 2 , the present invention provides a helmet attitude measurement method, comprising:

[0042] Step 1, receiving helmet inertial navigation information, body inertial navigation information and image information;

[0043] The helmet inertial navigation information is sent by the helmet inertial navigation device 10 installed on the helmet. The helmet inertial navigation device 10 can use inertial sensors to measure the position and attitude of the helmet in the inertial space. The output signals include three axes of X, Y and Z. The electrical speed signal, acceleration signal, magnetic intensity signal on the circuit, or a proprietary digital calibration circuit after conversion;

[0044] The body inertial navigation information is sent by the collective inertial navigation device 20 installed on the body, specifically including electrical rate signals on the X, Y, and Z axes, acceleration signals, angular velocity signals, and magne...

Embodiment 2

[0073] Please refer to Figure 8 , On the basis of Embodiment 1, the present invention provides a helmet attitude measurement device, including: an information receiving module 1, an information processing module 2, and a data fusion module 3, wherein the information processing module 2 includes a helmet attitude sub-module 21, Visual attitude submodule 22; Visual attitude submodule 22 includes preprocessing unit 221, detection unit 222, image coordinate unit 223, space coordinate unit 224, visual pose unit 225; Described data fusion module 3 includes error acquisition submodule 31, Error compensation sub-module 32; wherein:

[0074] Information receiving module 1 is used for receiving helmet inertial navigation information, body inertial navigation information and image information;

[0075] The information processing module 2 is used to perform calibration and relative motion compensation processing on the helmet inertial navigation information through the body navigation i...

Embodiment 3

[0080] refer to figure 2 , a helmet attitude measurement system, comprising a helmet inertial navigation device 10, a body inertial navigation device 20, a visual sensor 30, wherein:

[0081] The helmet inertial navigation device 10 is used to output the helmet inertial navigation information, and is arranged on the helmet, including a three-axis MEMS gyroscope 101, a three-axis MEMS acceleration sensor 102, and a three-axis magnetic sensor 103;

[0082] The body inertial navigation device 20 is used for outputting the body inertial navigation information, and is arranged on the body;

[0083] The visual sensor 30 is arranged on the helmet, and is used for taking pictures of the interior of the cabin and outputting image information;

[0084] The helmet attitude measurement device 40 of any embodiment is arranged on the helmet or the body, and is used to obtain helmet attitude information according to the helmet inertial navigation information, body inertial navigation infor...

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Abstract

The invention discloses a helmet attitude measurement method, device and system. The helmet attitude measurement method comprises the steps that helmet inertial navigation information, fuselage inertial navigation information and image information are received; the helmet inertial navigation information is calibrated and subjected to relative motion compensation processing through the fuselage navigation information, and thus helmet motion information is obtained; features calibrated in the image information is recognized and extracted, and thus visual pose information is obtained; and the visual pose information and the helmet motion information are subjected to data fusion, and thus helmet attitude information is obtained. According to the helmet attitude measurement method, the shortcomings that the update rate is low, reliability is poor, and the operational requirements for precision cannot be met are overcome, the update rate is increased, the reliability is improved, and the precision requirement is met.

Description

technical field [0001] The invention relates to the technical field of navigation attitude measurement, in particular to a helmet attitude measurement method, a measurement device and a measurement system. Background technique [0002] With the increasingly complex operation of modern fighter aircraft operating systems and on-board radar and other equipment, the pilot's helmet is not only a protective device, but also a powerful information platform. Modern aircraft generally use helmet-mounted displays with helmet-mounted aiming functions. The helmet-mounted display can guide the radar and other on-board equipment in real time with the rotation of the pilot's head, and perform target tracking and aiming operations, which greatly improves the combat performance of the aircraft. On the other hand, the helmet-mounted display can also display the battlefield environment outside the cabin from the current perspective, so that the pilot has an "immersion" in the battlefield envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/16
CPCG01C21/005G01C21/165
Inventor 肖定邦王朝光吴学忠陆阔高凯管锐赵启超岳林峰唐源江
Owner NAT UNIV OF DEFENSE TECH
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