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基于雙目視覺(jué)的飛行頭盔動(dòng)載特性測試技術(shù)研究
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(1.中航工業(yè)航宇救生裝備有限公司,湖北 襄陽(yáng) 441003;2.航空防護救生技術(shù)航空科技重點(diǎn)實(shí)驗室, 湖北 襄陽(yáng) 441003)

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沈文波(1973-),男,湖北襄陽(yáng)人,高級工程師,碩士,主要從事航空裝備試驗測試技術(shù)研究。 周 武(1968-),女,四川內江人,高級工程師,碩士,主要電子測量與控制技術(shù)研究。 [FQ)]

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Research on Dynamic Load Characteristics Test Technique for Flight Helmet  Based on Binocular Vision[HS)]
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(1.AVIC Aerospace Life-support Industries, LTD.,Xiangyang 441003, China;2.Aviation Key Laboratory of Science and Technology on Life-support Technology, Xiangyang 441003, China)[JZ)]

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    摘要:

    為了測試飛行員綜合顯示頭盔系統在動(dòng)態(tài)載荷下的穿戴運動(dòng)特性和人機工效性,針對頭盔與頭部相對運動(dòng)狀態(tài)難以量化測量的問(wèn)題,提出了一種基于雙目視覺(jué)的測量方法,并研制了相應的測試系統;測試前,對兩臺攝像機分別進(jìn)行標定以獲取其內外參數,在施加動(dòng)態(tài)載荷的測試過(guò)程中,通過(guò)攝像機提取被測目標事先編碼的標記點(diǎn),利用圖像處理軟件對其定位和立體匹配,確定標記點(diǎn)的坐標值及相互關(guān)系,調用OpenCV中的cvPOIST函數解算目標位置及三維姿態(tài),實(shí)現了頭盔與頭部模型三維相對位移、角度和角速度參數的精確測量,試驗結果表明,這種非接觸式的測量方法真實(shí)還原了動(dòng)態(tài)過(guò)載過(guò)程中頭盔與頭模的相對運動(dòng)過(guò)程,具有不改變試驗對象的質(zhì)量特性、不干擾試驗對象運動(dòng)狀態(tài)的優(yōu)點(diǎn),具有較高的應用價(jià)值。

    Abstract:

    The paper proposed a measurement method based on binocular vision meanwhile developed a testing system to examine the dynamic performance and ergonomics of helmet mounted display system, which could solve the problem that it is difficult to measure the relative movement between helmet and head quantitatively. Two cameras were standardized to have their internal and external parameters obtained before test. During test process, pre-encoded sign points were extracted by those two cameras, followed by locating and matching with image processing software to provide coordinate value and relative relationship. The function cvPOIST in OpenCV was used to calculate the locations and three-dimensional attitudes of the object. In this way, key parameters, relative three-dimensional displacement, angles and angular velocity, were measured accurately. Results of the test suggested that this non-contact measurement method could restore the relative movement between helmet and head model, it also has the advantages that do not change the quality characteristics as well as not affect the movement status of the test object, making it competitive in applications.

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沈文波,周武.基于雙目視覺(jué)的飛行頭盔動(dòng)載特性測試技術(shù)研究計算機測量與控制[J].,2016,24(6):52-55.

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  • 收稿日期:2015-12-02
  • 最后修改日期:2016-01-05
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  • 在線(xiàn)發(fā)布日期: 2016-07-27
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