The laser pointer is used as a pointer in the classroom. After the teacher uses the laser pointer tool, when no other tools are used, the style of the laser pointer will be changed to the style of the laser pointer when the teacher uses other tools. When the teacher stops using other tools, the style of the laser pointer will be changed to the style of the laser pointer. After selecting the laser pointer, other teaching tools can be used normally. When the teacher does not click on the screen, the student will see the teacher's mouse style to display the state of the laser pointer. The traditional pointer is a simple stick, with the difference of materials (such as wood, iron, etc.), and the difference of styles (such as antenna type telescopic). Later, the laser pen appeared, with the laser way to indicate the position of the point of interest on the blackboard, this way can realize the remote whiteboard indication.
The laser pen controller receives the level signal of the laser pen indicating button to control the laser pen firing or closing; The camera controller receives the level signal of the face detection and recognition button to start the camera to collect the face image, and trigger the work of the face recognition SCM system; The face recognition microcontroller system is triggered to display the image collected by the camera on the micro LCD screen, and to identify the collected face image, but also under the control of the level signal of the identity information display button will display the identification results on the micro LCD screen; The electronic whiteboard controller receives the level signal of the electronic whiteboard control button to control the computer system connected to the electronic whiteboard to realize the whiteboard page turning function; The battery pack system powers the control circuit board, laser pointer, camera and tiny LCD screen.
The new classroom laser pointer:
With the further application and in-depth use of PPT presentation, the electronic teaching whip of PPT presentation is also accompanied by the application. In the existing technology, most of the electronic pointer on the market is a simple remote control page turning laser pointer, push-button operation, can realize simple up/down page turning, with play/black screen function. In addition, part of the electronic pointer is a multi-functional demonstration laser pointer, push-button operation, adding a simple mouse marker function, its own track ball, but also can carry the clock, vibration, recording and other functions. But first, due to its large size, relatively single function, with the laser pen insecurity, so that its use scope is greatly limited. Second, the operation mode of electronic pointer is all push-button operation, which is easy to appear button failure and finger pressing fatigue. Third, the laser of the electronic pointer in the existing technology will cause damage to the eyes, there are security risks, and increase the volume and energy consumption of the electronic high powered laser pointer. Fourth, the function of the existing electronic teaching whip is relatively simple, unable to quickly achieve painting, marking and other writing functions, unable to achieve further interactive communication, detailed teaching and so on in the teaching process.