技术领域technical field
本发明涉及录播设备技术领域，尤其涉及一种移动投影式精品课录像视线引导系统。The invention relates to the technical field of recording and broadcasting equipment, in particular to a mobile projection-type video-recording sight-guiding system for excellent courses.
背景技术Background technique
随着在线教育的迅速发展，近年来精品课程、慕课等网上课程大量涌现，因此需要制作大量的视频课程，在大部分视频课程中，教师需要出现在视频画面中，用于增加师生的交流感，提高教学效果，但是目前由于教师普遍缺乏在摄像机面前讲课的训练，同时视频课程的录制现场多数是没有学生的，所以不可避免的造成了视频课程一些普遍的缺憾：With the rapid development of online education, a large number of online courses such as quality courses and MOOCs have emerged in recent years. Therefore, a large number of video courses need to be produced. In most video courses, teachers need to appear in the video screen to increase the interaction between teachers and students. A sense of communication to improve teaching effects. However, at present, teachers generally lack training in front of cameras, and most of the recording sites of video courses do not have students, so it is inevitable that some common shortcomings of video courses are caused:
1、精品课录制现场大部分是没有学生的，很多教师非常不习惯，无法找到讲课的感觉，不知道视线该往哪里看，常常会感到手足无措，目光呆滞，导致录制效果较差。1. Most of the high-quality course recording sites have no students. Many teachers are not used to it, unable to find the feeling of lecturing, and do not know where to look. They often feel at a loss and their eyes are dull, resulting in poor recording effects.
2精品课录制和平时上课不同，需要内容精炼，讲课流畅，所以在录制时，所以很多讲课老师会在对面安装一个显示课件字幕的屏幕，起到提示讲课内容的作用，但是此种方式，因为屏幕的位置时固定不变的，在老师授课过程中，往往一直观看一个方向，画面效果显得不自然，观众很容易看出老师在看提词字幕，影响教学效果。2 The recording of excellent courses is different from that of ordinary classes. It requires refined content and smooth lectures. Therefore, when recording, many lecturers will install a screen displaying courseware subtitles on the opposite side to remind the lecture content. However, this method, because The position of the screen is fixed. During the teaching process, the teacher often looks at one direction all the time, and the picture effect appears unnatural. It is easy for the audience to see that the teacher is watching the prompt subtitles, which affects the teaching effect.
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种可以引导教师视线方向的移动投影式精品课录像视线引导系统，能引导授课教师保持视线交流的自然状态，提高精品课录像的授课质量。The technical problem to be solved by the present invention is to provide a mobile projection type excellent course video sight guidance system that can guide the teacher's sight direction, which can guide the teacher to maintain a natural state of sight communication and improve the teaching quality of the excellent course video.
为解决上述技术问题，本发明的技术方案是：移动投影式精品课录像视线引导系统，包括投影屏幕、课件电脑、投影机、电控云台以及控制台；In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a mobile projection-type excellent course video sight guidance system, including a projection screen, a courseware computer, a projector, an electronically controlled pan-tilt, and a console;
投影屏幕，设置在讲台对面，用于显示课件字幕；Projection screen, set on the opposite side of the podium, used to display courseware subtitles;
课件电脑，用于生成课件字幕；Courseware computer, used to generate courseware subtitles;
投影机，安装在所述电控云台上，与所述课件电脑连接且位于所述投影屏幕的前方，所述课件电脑上生成的课件字幕通过所述投影机投射至所述投影屏幕上，在所述投影屏幕上显示课件字幕，所述投影屏幕的尺寸大于所述投影屏幕上显示的课件字幕所占区域的尺寸；The projector is installed on the electric control platform, is connected with the courseware computer and is located in front of the projection screen, and the courseware subtitles generated on the courseware computer are projected onto the projection screen by the projector, Display courseware subtitles on the projection screen, the size of the projection screen is greater than the size of the area occupied by the courseware subtitles displayed on the projection screen;
控制台，包括与所述电控云台信号连接的视线引导控制模块，所述控制台上还设置有与所述视线引导控制模块连接的云台控制摇杆，所述云台控制摇杆通过所述视线引导控制模块控制所述电控云台运动，从而控制所述投影机的运动方向和运动速度；The console includes a line-of-sight guidance control module connected with the electronically controlled pan-tilt signal, and a pan-tilt control rocker connected with the line-of-sight guidance control module is also provided on the console, and the pan-tilt control rocker passes through The line-of-sight guidance control module controls the motion of the electronically controlled pan-tilt, thereby controlling the motion direction and motion speed of the projector;
所述控制台上还设置有与所述视线引导控制模块连接的目标位置快捷键，所述视线引导控制模块可以预设所述电控云台的目标位置数据，当按下所述目标位置快捷键时，所述视线引导控制模块按照预设的所述目标位置数据控制所述电控云台转动至相应位置。The console is also provided with a target position shortcut key connected to the line of sight guidance control module, the line of sight guidance control module can preset the target position data of the electronic control platform, when pressing the target position shortcut When the button is pressed, the line-of-sight guidance control module controls the electronically controlled pan-tilt to rotate to a corresponding position according to the preset target position data.
作为优选的技术方案，所述投影屏幕上设置有透光反光区，所述透光反光区由透光反光单元阵列组成；As a preferred technical solution, the projection screen is provided with a light-transmitting reflective area, and the light-transmitting reflective area is composed of an array of light-transmitting and reflective units;
所述透光反光单元包括透光孔，所述透光孔的外周设置有透光孔边框，所述透光孔的上部设置有安装在所述透光孔边框上的遮光反光部，所述遮光反光部的外侧设有一个向下倾斜的反射面，所述反射面上设置有漫反射材料，来自所述投影机的光经所述反射面反射至讲台方向，可以使授课教师看到投影图像，所述投影机照射至所述遮光反光部形成的阴影完全覆盖所述透光孔；所述透光反光单元除了所述反射面之外的其余部分表面均由吸光材料构成，任一所述透光反光单元的长宽均小于1mm。The light-transmitting reflective unit includes a light-transmitting hole, a frame of the light-transmitting hole is arranged on the periphery of the light-transmitting hole, and a light-shielding reflective part installed on the frame of the light-transmitting hole is arranged on the upper part of the light-transmitting hole. The outside of the light-shielding reflective part is provided with a downward-sloping reflective surface, and the reflective surface is provided with a diffuse reflective material. The light from the projector is reflected to the direction of the podium through the reflective surface, so that the teacher can see the projection Image, the shadow formed by the projector irradiating the light-shielding reflective part completely covers the light-transmitting hole; the rest of the surface of the light-transmitting light-reflecting unit except the reflecting surface is made of light-absorbing material, and any The length and width of the light-transmitting and reflecting unit are both less than 1mm.
作为优选的技术方案，所述视线引导系统还包括分别与所述课件电脑、所述控制台、所述投影机连接的信号叠加器；As a preferred technical solution, the line-of-sight guidance system also includes a signal superimposer connected to the courseware computer, the console, and the projector respectively;
所述控制台还包括媒体播放模块，所述媒体播放模块播放的媒体信号与所述课件电脑输出的课件字幕分别传输至所述信号叠加器上，所述信号叠加器将所述媒体播放模块上的媒体信号与所述课件电脑的课件字幕叠加后传输至所述投影机。The console also includes a media player module, and the media signal played by the media player module and the courseware subtitles output by the courseware computer are respectively transmitted to the signal superimposed device, and the signal superimposed device is connected to the media player module. The media signal is superimposed with the courseware subtitles of the courseware computer and then transmitted to the projector.
作为优选的技术方案，所述视线引导系统还包括用于测量教师头部转动角度的转动角度检测器，所述转动角度检测器包括陀螺仪、角度检测电路和无线发射电路，所述角度检测电路用于检测所述陀螺仪的转动角度数据信号，并将所述转动角度数据信号传输至所述无线发射电路；As a preferred technical solution, the line of sight guidance system also includes a rotation angle detector for measuring the rotation angle of the teacher's head, and the rotation angle detector includes a gyroscope, an angle detection circuit and a wireless transmission circuit, and the angle detection circuit It is used to detect the rotation angle data signal of the gyroscope, and transmit the rotation angle data signal to the wireless transmitting circuit;
所述控制台还包括与所述无线发射电路对应的无线接收电路，所述无线接收电路接收所述无线发射电路发射的所述转动角度数据信号并传输至所述视线引导控制模块，所述视线引导控制模块驱动所述电控云台运动，从而控制所述投影机的运动方向和运动速度；The console also includes a wireless receiving circuit corresponding to the wireless transmitting circuit, the wireless receiving circuit receives the rotation angle data signal transmitted by the wireless transmitting circuit and transmits it to the line of sight guidance control module, and the line of sight The guidance control module drives the electronically controlled pan-tilt to move, thereby controlling the moving direction and moving speed of the projector;
所述控制台上还设置有用于切换主动引导模式与被动跟踪模式的主被动切换按键，当按下所述主被动切换按键时，所述视线引导控制模块可以在所述主动引导模式与被动跟踪模式之间切换，当所述视线引导控制模块处于所述主动引导模式时，所述视线引导控制模块接收所述云台控制摇杆与所述目标位置快捷键的控制信号；当所述视线引导控制模块处于所述被动跟踪模式时，所述视线引导控制模块接收所述无线接收电路接收的转动角度数据信号。The console is also provided with an active-passive switch button for switching between the active guidance mode and the passive tracking mode. When the active-passive switch button is pressed, the sight guidance control module can switch between the active guidance mode and passive tracking switch between modes, when the line of sight guidance control module is in the active guidance mode, the line of sight guidance control module receives the control signals of the pan/tilt control rocker and the target position shortcut key; when the line of sight guidance When the control module is in the passive tracking mode, the line-of-sight guidance control module receives the rotation angle data signal received by the wireless receiving circuit.
作为优选的技术方案，所述投影屏幕设置为圆弧型屏幕，所述投影机安装在所述圆弧型屏幕的中心的上方位置。As a preferred technical solution, the projection screen is set as an arc-shaped screen, and the projector is installed above the center of the arc-shaped screen.
由于采用了上述技术方案，本发明的有益效果是：授课过程中，所述控制台可以控制所述电控云台运动，从而来调整所述投影机的运动，使得在所述投影屏幕上显示的课件字幕可以运动至所述投影屏幕的不同区域，课件字幕移动过程中，教师的视线可以跟随课件字幕移动，使得教师授课过程中，视线不会一直集中在某处，视线可以做到自然移动，使得所呈现出的课程视频画面更加自然，并且不会被发现是在观看课件字幕，提高授课效果。Due to the adoption of the above-mentioned technical solution, the beneficial effect of the present invention is that during the teaching process, the console can control the movement of the electronically controlled pan-tilt, thereby adjusting the movement of the projector so that it can be displayed on the projection screen. The courseware subtitles can be moved to different areas of the projection screen. During the movement of the courseware subtitles, the teacher's sight can follow the movement of the courseware subtitles, so that the teacher's sight will not always focus on a certain place during the teaching process, and the sight can move naturally , making the presented course video images more natural, and will not be found to be watching courseware subtitles, improving the teaching effect.
附图说明Description of drawings
以下附图仅旨在于对本发明做示意性说明和解释，并不限定本发明的范围。其中：The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:
图1是本发明实施例俯视角度的结构布置图；Fig. 1 is the structural layout diagram of the top view angle of the embodiment of the present invention;
图2是本发明实施例透光反光区的透光反光区；Fig. 2 is the light-transmitting light-reflecting area of the light-transmitting light-reflecting area of the embodiment of the present invention;
图3是本发明实施例透光反光区的结构示意图；Fig. 3 is a schematic structural view of a light-transmitting and reflective region according to an embodiment of the present invention;
图4是本发明实施例透光反光区的正视图；Fig. 4 is a front view of the light-transmitting and reflective area of the embodiment of the present invention;
图5是本发明实施例的模块示意图；Fig. 5 is a block diagram of an embodiment of the present invention;
图中：1-投影屏幕；11-透光反光区；12-透光孔；13-透光孔边框；14-遮光反光部；2-课件电脑；3-投影机；4-电控云台；5-控制台；6-摄像机；7-信号叠加器；8-转动角度检测器。In the figure: 1-projection screen; 11-light-transmitting reflective area; 12-light-transmitting hole; 13-light-transmitting hole frame; 14-shading reflective part; 2-courseware computer; 3-projector; 4-electrically controlled pan/tilt ; 5-console; 6-camera; 7-signal superimposer; 8-rotation angle detector.
具体实施方式Detailed ways
下面结合附图和实施例，进一步阐述本发明。在下面的详细描述中，只通过说明的方式描述了本发明的某些示范性实施例。毋庸置疑，本领域的普通技术人员可以认识到，在不偏离本发明的精神和范围的情况下，可以用各种不同的方式对所描述的实施例进行修正。因此，附图和描述在本质上是说明性的，而不是用于限制权利要求的保护范围。Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
实施例一：Embodiment one:
如图1和图5所示，移动投影式精品课录像视线引导系统，包括投影屏幕1、课件电脑2、投影机3、电控云台4以及控制台5。As shown in Fig. 1 and Fig. 5, the mobile projection type excellent course video sight guidance system includes a projection screen 1, a courseware computer 2, a projector 3, an electronically controlled pan-tilt 4 and a console 5.
其中，所述投影屏幕1设置在讲台对面，用于显示课件字幕；所述课件电脑2用于生成课件字幕；所述投影机3安装在所述电控云台4上，所述电控云台4作为所述投影机3的安装基体，使得所述投影机3可以随着所述电控云台4运动，所述投影机3与所述课件电脑2连接且位于所述投影屏幕1的前方，一般位于前方上侧，用于避免对教师视线造成阻挡，所述投影机3由上方向下方倾斜投影至所述投影屏幕1上，所述课件电脑2上生成的课件字幕通过所述投影机3投射至所述投影屏幕1上，在所述投影屏幕1上显示课件字幕，所述投影屏幕1的尺寸大于课件字幕所占区域的尺寸。Wherein, the projection screen 1 is arranged on the opposite side of the podium for displaying courseware subtitles; the courseware computer 2 is used for generating courseware subtitles; the projector 3 is installed on the electric control platform 4, and the electric control cloud The platform 4 is used as the installation base of the projector 3, so that the projector 3 can move with the electric control platform 4, and the projector 3 is connected with the courseware computer 2 and is located on the side of the projection screen 1 The front, generally located on the upper side of the front, is used to avoid blocking the teacher's line of sight. The projector 3 is obliquely projected from the top to the bottom on the projection screen 1, and the courseware subtitles generated on the courseware computer 2 pass through the projection The computer 3 projects onto the projection screen 1, and the courseware subtitles are displayed on the projection screen 1. The size of the projection screen 1 is larger than the size of the area occupied by the courseware subtitles.
所述控制台5包括与所述电控云台4信号连接的视线引导控制模块，所述电控云台4为数字云台，所述视线引导控制模块通过数字信号控制所述电控云台4，所述控制台5上还设置有与所述视线引导控制模块连接的云台控制摇杆，所述云台控制摇杆通过所述视线引导控制模块控制所述电控云台4运动，从而控制所述投影机3的运动方向和运动速度。所述云台控制摇杆可以根据其方向和幅度来控制所述投影机3的运动方向和速度，工作人员可以根据需要灵活控制所述电控云台4的运动。Described console 5 comprises the line-of-sight guide control module that is connected with described electric control platform 4 signals, and described electric control platform 4 is a digital platform, and described line-of-sight guidance control module controls described electric control platform by digital signal 4. The console 5 is also provided with a pan-tilt control rocker connected to the line-of-sight guidance control module, and the pan-tilt control rocker controls the movement of the electronically-controlled pan-tilt 4 through the line-of-sight guidance control module, Thereby controlling the moving direction and moving speed of the projector 3 . The pan-tilt control rocker can control the motion direction and speed of the projector 3 according to its direction and range, and the staff can flexibly control the motion of the electronically-controlled pan-tilt 4 as required.
所述控制台5上还设置有与所述视线引导控制模块连接的目标位置快捷键，所述视线引导控制模块可以预设所述电控云台的目标位置数据，当按下所述目标位置快捷键时，所述视线引导控制模块按照预设的所述目标位置数据控制所述电控云台4转动至相应位置。所述目标位置数据可以为某个具体位置和方向的数据，即教师最常注视的方向，当按下所述目标位置快捷键后，所述视线引导控制模块会按照预设的所述目标位置数据控制所述电控云台4运动至教师最常注视的方向，而教师的视线也会自然跟随；所述目标位置数据也可以为某种运动方式，例如扫视移动、注意点转移移动等，扫视移动一般在上课的开始、下课以及中间提问时同学思考问题时出现，平时上课时，教师一般会在上课开始或结束时，与所有的同学有一个眼神的交流，采用视线眼神平稳扫过所有同学的方式，实现移动速度均匀；注意点转移移动一般是有学生提问采用，特点是运动速度较快。只要按下快捷键就能按照所述目标位置数据进行运动，不再通过所述云台控制摇杆控制，控制方式更加方便。所述电控云台4具有全自动方式模式，就是把课程中教师的视线转移做成一个自动程序，自动程序可以智能的控制所述投影机3的投影方向，自动程序编制可以参照讲课比较自然的教师的视线转移的规律编制，转移媒体的时间和方向速度都是可以有一定的随机变化范围，不是一成不变的。Described console 5 is also provided with the target position shortcut key that is connected with described line of sight guidance control module, and described line of sight guidance control module can preset the target position data of described electric control platform, when pressing described target position When the shortcut key is pressed, the line-of-sight guidance control module controls the electronically controlled pan-tilt 4 to rotate to a corresponding position according to the preset target position data. The target position data can be the data of a certain specific position and direction, that is, the direction that the teacher most often looks at. When the shortcut key of the target position is pressed, the sight guidance control module will follow the preset target position Data control described electronically controlled pan-tilt 4 moves to the direction that teacher looks at the most, and teacher's line of sight also can follow naturally; Described target position data also can be some kind of movement mode, for example glance moves, attention point shifts and moves etc., Saccade movement usually occurs when students are thinking about problems at the beginning of class, after class, and when asking questions in the middle. In normal class, the teacher usually has eye contact with all the students at the beginning or end of the class, and uses the gaze to scan all the students smoothly. Classmates' way, to achieve uniform moving speed; attention point transfer movement is generally used by students to ask questions, and it is characterized by faster movement speed. As long as the shortcut key is pressed, the movement can be carried out according to the target position data, instead of being controlled by the joystick of the pan/tilt control, the control method is more convenient. The electric control pan/tilt 4 has a fully automatic mode, which is to transfer the sight of the teacher in the course into an automatic program, the automatic program can intelligently control the projection direction of the projector 3, and the automatic program can be compared naturally with reference to the lecture According to the law of the teacher's sight transfer, the time and direction speed of the transfer media can have a certain range of random changes, and are not static.
本实施例的工作原理为：The working principle of this embodiment is:
精品课录制过程中，教师站在讲台上，对着讲台上的黑板或电子显示板进行授课，教师讲课过程中，所述课件电脑2上生成的课件字幕通过所述投影机3投射至所述投影屏幕1上，用于为教师提供提示的课件字幕；授课过程中，所述控制台5可以控制所述电控云台4运动，从而来调整所述投影机3的运动，使得在所述投影屏幕1上显示的课件字幕可以运动至所述投影屏幕1的不同区域，课件字幕移动过程中，教师的视线跟随课件字幕移动，使得教师授课过程中，视线不会一直集中在某处，视线可以做到自然移动，使得所呈现出的课程视频画面更加自然，并且不会被发现是在观看课件字幕，提高授课效果。本发明所述的视线引导系统，主要用于教师需要面向同学的讲课的情况，并不影响讲课教师回头观看、指示黑板和讲台屏幕内容。During the recording process of the high-quality class, the teacher stands on the podium and gives lectures to the blackboard or electronic display board on the podium. During the teacher's lecture process, the courseware subtitles generated on the courseware computer 2 are projected to the computer via the projector 3. On the projection screen 1, it is used to provide the teacher with prompt courseware subtitles; during the teaching process, the console 5 can control the movement of the electric control platform 4, thereby adjusting the movement of the projector 3, so that the The courseware subtitles displayed on the projection screen 1 can be moved to different areas of the projection screen 1. During the movement of the courseware subtitles, the teacher's line of sight follows the movement of the courseware subtitles, so that the teacher's line of sight will not always focus on a certain place during the teaching process. It can move naturally, so that the course video picture presented is more natural, and it will not be found that you are watching the subtitles of the courseware, which improves the teaching effect. The line of sight guidance system of the present invention is mainly used in the situation where the teacher needs to give lectures to the classmates, and does not affect the lecturer to look back and indicate the content of the blackboard and the screen of the podium.
参见图2至图4，所述投影屏幕1上设置有透光反光区11，所述透光反光区11由透光反光单元阵列组成。Referring to FIG. 2 to FIG. 4 , the projection screen 1 is provided with a light-transmitting and reflecting area 11 , and the light-transmitting and reflecting area 11 is composed of an array of light-transmitting and reflecting units.
所述透光反光单元包括透光孔12，所述透光孔12的外周设置有透光孔边框13，所述透光孔12的上部设置有安装在所述透光孔边框13上的遮光反光部14，所述遮光反光部14外侧设有一个向下倾斜的反射面，所述反射面上设置有漫反射材料，来自所述投影机3的光经所述反射面反射至讲台方向，可以使授课教师看到投影图像，所述投影机3照射至所述遮光反光部14形成的阴影完全覆盖所述透光孔12；所述透光反光单元除了所述反射面之外的其余部分表面均由吸光材料构成，任一所述透光反光单元的长宽均小于1mm。所述投影机3发出的光照射在所述遮光反光部14的反射面，所述反光材料反射的光可以被授课教师看到，所述投影机3照射至所述遮光反光件形成的阴影完全覆盖所述透光孔12，即不会经过所述透光孔12，此时摄像机可以通过所述透光反光区11进行录像，照射到所述投影屏幕的另一面。The light-transmitting reflective unit includes a light-transmitting hole 12, the outer periphery of the light-transmitting hole 12 is provided with a light-transmitting hole frame 13, and the upper part of the light-transmitting hole 12 is provided with a light shielding device installed on the light-transmitting hole frame 13. Reflective portion 14, the outside of the light-shielding reflective portion 14 is provided with a downwardly inclined reflective surface, the reflective surface is provided with a diffuse reflective material, and the light from the projector 3 is reflected to the direction of the podium through the reflective surface, The projected image can be seen by the lecturer, and the shadow formed by the projector 3 on the light-shielding reflective part 14 completely covers the light-transmitting hole 12; the rest of the light-transmitting reflective unit except the reflective surface The surfaces are all made of light-absorbing materials, and the length and width of any one of the light-transmitting and reflecting units are less than 1mm. The light emitted by the projector 3 is irradiated on the reflective surface of the light-shielding reflective part 14, and the light reflected by the reflective material can be seen by the teacher, and the shadow formed by the light-shielding reflective member irradiated by the projector 3 is completely Covering the light-transmitting hole 12 , that is, not passing through the light-transmitting hole 12 , the camera can record video through the light-transmitting reflective area 11 and illuminate the other side of the projection screen.
所述视线引导系统还包括戴在授课教师头部用于测量教师头部转动角度的转动角度检测器8，所述转动角度检测器8包括陀螺仪、角度检测电路和无线发射电路所述角度检测电路用于检测所述陀螺仪的转动角度数据信号，并将所述转动角度数据信号传输至所述无线发射电路。Described line-of-sight guidance system also comprises the rotation angle detector 8 that is worn on teacher's head and is used for measuring teacher's head rotation angle, and described rotation angle detector 8 comprises gyroscope, angle detection circuit and wireless transmitting circuit. The circuit is used to detect the rotation angle data signal of the gyroscope, and transmit the rotation angle data signal to the wireless transmitting circuit.
所述控制台5还包括与所述无线发射电路对应的无线接收电路，所述无线接收电路接收所述无线发射电路发射的所述转动角度数据信号并传输至所述视线引导控制模块，所述视线引导控制模块驱动所述电控云台4运动，从而控制所述投影机3的运动方向和运动速度。The console 5 also includes a wireless receiving circuit corresponding to the wireless transmitting circuit, the wireless receiving circuit receives the rotation angle data signal transmitted by the wireless transmitting circuit and transmits it to the sight guidance control module, the The line-of-sight guidance control module drives the electronically controlled pan-tilt 4 to move, thereby controlling the moving direction and moving speed of the projector 3 .
所述控制台5上还设置有用于切换主动引导模式与被动跟踪模式的主被动切换按键，当按下所述主被动切换按键时，所述视线引导控制模块可以在所述主动引导模式与被动跟踪模式之间切换。The console 5 is also provided with an active-passive switch button for switching the active guidance mode and the passive tracking mode. When the active-passive switch button is pressed, the sight guidance control module can switch between the active guidance mode and passive tracking mode Switch between tracking modes.
当所述视线引导控制模块处于所述主动引导模式时，所述视线引导控制模块接收所述云台控制摇杆与所述目标位置快捷键的控制信号；具体为：此时后台人员可以通过控制所述云台控制摇杆和所述目标位置快捷键来控制所述视线引导控制模块，使得所述电控云台4和安装在所述电控云台4上的投影机3运动，课件字幕在所述投影屏幕1上运动，教师授课过程中，视线跟随课件字幕的移动而转移；When the line-of-sight guidance control module is in the active guidance mode, the line-of-sight guidance control module receives the control signals of the pan-tilt control rocker and the target position shortcut key; The pan-tilt controls the rocker and the target position shortcut key to control the line-of-sight guidance control module, so that the electronically controlled pan-tilt 4 and the projector 3 mounted on the electronically controlled pan-tilt 4 move, and the courseware subtitles Moving on the projection screen 1, during the teaching process of the teacher, the line of sight follows the movement of the subtitles of the courseware and shifts;
当所述视线引导控制模式处于所述被动跟随模式时，所述视线引导控制模块接收所述无线接收电路接收的转动角度数据信号；具体为：教师授课过程中头部转动，所述角度检测电路检测到转动角度数据信号，并将信号传输至所述无线发射电路，所述无线发射电路将所述转动角度数据信号传递至所述无线接收电路，并传输至所述视线引导控制模块，使得所述电控云台4和安装在所述电控云台4上的投影机3运动，课件字幕在所述投影屏幕1上运动，课件字幕会跟随教师头部转动角度而发生相应转移。When the line-of-sight guidance control mode is in the passive following mode, the line-of-sight guidance control module receives the rotation angle data signal received by the wireless receiving circuit; The rotation angle data signal is detected, and the signal is transmitted to the wireless transmitting circuit, and the wireless transmission circuit transmits the rotation angle data signal to the wireless receiving circuit, and is transmitted to the sight guidance control module, so that the The electric control pan-tilt 4 and the projector 3 installed on the electric control pan-tilt 4 move, and the courseware subtitles move on the projection screen 1, and the courseware subtitles will follow the teacher's head rotation angle and correspondingly transfer.
所述视线引导控制模块还可以具有头部转动角度检测器8的校准功能，在授课教师上课前，授课教师分别面向屏幕的中心和四角位置进行角度校准，可以使课件字幕显示位置在被动跟踪时，授课教师的视线方向和课件字幕投射方向对应更加精准。The line of sight guidance control module can also have the calibration function of the head rotation angle detector 8. Before the teacher attends the class, the teacher carries out angle calibration facing the center and four corners of the screen respectively, so that the courseware subtitle display position can be passively tracked. , the teacher's line of sight corresponds more accurately to the projected direction of courseware subtitles.
所述视线引导系统还包括与所述课件电脑2、所述控制台5、所述投影机3连接的信号叠加器7；所述控制台5还包括媒体播放模块，所述媒体播放模块播放的媒体信号与所述课件电脑2输出的课件字幕分别传输至所述信号叠加器7上，所述信号叠加器7将所述媒体播放模块上的媒体信号与所述课件电脑2的课件字幕叠加后传输至所述投影机3。所述媒体播放模块可以播放符合教师教课内容的学生图像，大学课程就播放大学生上课的各种图像，小学课程就播放小学生的图像，并且可以根据课堂的内容，分别播放学生不同表情如认真听讲、相互讨论、跃跃欲试等表情的图像，更好的帮助教师进入的讲课状态。在有课件字幕的时候，可以作为课件字幕的背景图像出现。The line of sight guidance system also includes a signal superimposer 7 connected to the courseware computer 2, the console 5, and the projector 3; the console 5 also includes a media player module, and the media player module plays The courseware subtitles output by the media signal and the courseware computer 2 are respectively transmitted to the signal superimposed device 7, and the signal superimposed device 7 superimposes the media signal on the media playing module with the courseware subtitles of the courseware computer 2 transmitted to the projector 3. Described media playing module can play the student image that accords with teacher's teaching content, and university course just plays various images of college students in class, and primary school course just plays the image of primary school student, and can play different expressions of students such as listening carefully according to the content of class , Discussing with each other, eager to try and other facial expressions can better help teachers enter the state of lectures. When there are courseware subtitles, it can appear as the background image of the courseware subtitles.
所述投影屏幕1设置为圆弧型屏幕，所述投影机3安装在所述圆弧型屏幕的中心的上方位置。The projection screen 1 is set as an arc-shaped screen, and the projector 3 is installed above the center of the arc-shaped screen.
实施例二：Embodiment two:
本实施例是在实施例一的基础上增设了摄像机6，所述摄像机6设置在暗室内，所述投影屏幕1的透光反光区11是暗室的一个面，此时摄像机6可以通过所述透光反光区11进行录像，当投影机3向下投射的角度为30°时，讲台方向光线经过透光反光区11到达摄像机3的光线透光率，可以做到40％以上，照度降低大致相当于摄像缩小一级光圈多一点的水平，所以只要保持良好的照明，就不会产生摄像质量下降的问题。从教师方向来看，通过所述透光孔12的阵列区域反射的课件字幕会和其他区域反射的课件字幕质量不太一致，影响一定的观看效果，但是观看课件字幕内容的目的是可以实现的。In this embodiment, a camera 6 is added on the basis of Embodiment 1. The camera 6 is arranged in a dark room, and the light-transmitting and reflective area 11 of the projection screen 1 is a face of the dark room. At this time, the camera 6 can pass through the dark room. The translucent reflective area 11 is used for video recording. When the downward projection angle of the projector 3 is 30°, the light transmittance in the direction of the podium passes through the translucent reflective area 11 and reaches the camera 3. The light transmittance can be more than 40%, and the illuminance is reduced by approximately It is equivalent to reducing the aperture of the camera by a little more than one stop, so as long as good lighting is maintained, there will be no problem of camera quality degradation. From the teacher's point of view, the courseware subtitles reflected by the array area of the light-transmitting hole 12 will not be consistent with the quality of courseware subtitles reflected in other areas, which will affect certain viewing effects, but the purpose of watching the courseware subtitle content can be achieved .
以上显示和描述了本发明的基本原理、主要特征及本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.
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| CN202111156544.3ACN113888907B (en) | 2021-09-30 | 2021-09-30 | Mobile Projection Video Sight Guidance System for Excellent Classes |
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