CAJ | 학술논문

目的研究中心眼位和上调眼位时受试者对观察综合显示头盔信息的影响,测定两种眼位下头盔的位移与观察信息的关系,为综合显示头盔设计和使用提供依据. 方法受试者为6名青年男性健康志愿者,视力良好.受试者佩戴综合显示头盔,头盔显示器为右眼单目,视场20°.中心眼位时,水平视线通过出瞳中心.上调眼位时,出瞳中心调整到水平视线上5°.通过分别施加与2.5Gz～8.0Gz的载荷相对应重量的沙袋模拟静载荷,保持10 s,重复3次；由低到高逐次加载.在AMST-HC-4E型载人离心机上,依次进行G值增长率为3 G/s,峰值分别为3.5Gz～8.0Gz持续10s的离心机试验.由受试者报告观察到的显示信息变化.通过三维坐标测量仪测量头盔位移. 结果静加载时,上调眼位的头盔平均位移约为中心眼位的50％,信息丢失仅在视场上、下端小于2.5°的范围.离心机试验,上调眼位的头盔在6.5Gz10 s时整个视场信息基本可见,但中心眼位的头盔在6.0Gz10s时50％以上的信息丢失.静加载试验和离心机试验,上调眼位观察信息的变化趋势是一致的. 结论上调眼位明显好于中心眼位对信息的观察.上调眼位对观察综合显示头盔信息的优势,为综合显示头盔的设计和使用提供了一条新途径.
목적 연구중심안위화상조안위시수시자대관찰종합현시두회신식적영향,측정량충안위하두회적위이여관찰신식적관계,위종합현시두회설계화사용제공의거. 방법 수시자위6명청년남성건강지원자,시력량호.수시자패대종합현시두회,두회현시기위우안단목,시장20°.중심안위시,수평시선통과출동중심.상조안위시,출동중심조정도수평시선상5°.통과분별시가여2.5Gz～8.0Gz적재하상대응중량적사대모의정재하,보지10 s,중복3차；유저도고축차가재.재AMST-HC-4E형재인리심궤상,의차진행G치증장솔위3 G/s,봉치분별위3.5Gz～8.0Gz지속10s적리심궤시험.유수시자보고관찰도적현시신식변화.통과삼유좌표측량의측량두회위이. 결과 정가재시,상조안위적두회평균위이약위중심안위적50％,신식주실부재시장상、하단소우2.5°적범위.리심궤시험,상조안위적두회재6.5Gz10 s시정개시장신식기본가견,단중심안위적두회재6.0Gz10s시50％이상적신식주실.정가재시험화리심궤시험,상조안위관찰신식적변화추세시일치적. 결론 상조안위명현호우중심안위대신식적관찰.상조안위대관찰종합현시두회신식적우세,위종합현시두회적설계화사용제공료일조신도경.
Objective To investigate the effects of eye position (EP) on the observation of helmet mounted display by studying the relations between the helmet displacement and observation loss,so as to provide references for improving the design of helmet prototype and guiding the use.Methods Six young men with normal visual acuity were selected as subjects.They wore the helmets with single display to right eye with 20° optical field of view (FOV).As applying the central EP the subject's horizontal viewing line was coaxial with the center of exit pupil.And the upper EP put the center of exit pupil pitch up 5° to the horizontal viewing line.Then in static test the load that respectively equivalent to 2.5 to 8.0 G was applied to helmet for simulating G-force effect.The 10 s-loading was gradually added and each repeated for 3 times.The dynamic tests were taken on human centrifuge with the profiles of 3 G/s onset rate,10 s duration and 3.5 to 8.0 Gz level.In above tests subjects reported the changes of observation and the displacement of helmet was simultaneously measured by 3-D digitizing system.Results In the static test the mean displacement of helmet as upper EP was about 50％ of that of the central EP,and the observation loss was within ±2.5° vertical FOV.In the centrifuge tests upper EP enabled subjects keeping integral observation as up to 6.5 Gz level comparing to the 50％ loss as central EP applied under the same G load.Both static and dynamic tests indicated an accordant trend of observation loss.Conclusions The upper EP is better than central EP for information viewing under G load and indicates a certain advantage in adopting helmet mounted display.It would bring new thoughts in the design of helmet mounted display and the applications.