The push-button matrix includes a laser push-button switch, and a laser diode and a laser push-button switch are connected to the switch. In multimedia teaching, most teachers use a laser pointer to display the content on the screen. In the event of an accident, teachers have to go back to the office where the computer is and control the computer desktop with the mouse so that they can walk to the podium somewhere in between the computer and the computer and waste time in the classroom. In addition, the existing mouse does not have an integrated laser pointer, causing teachers to move back and forth between the computer and other places on the platform, which is not conducive to teachers' teaching.which has the following favorable technical effects: Position detection of laser pointer shift changes, the measurement results are not affected by the circuit, high measurement sensitivity, can control the speed of cursor movement and positioning accuracy.
Wireless laser brush lighthouse has two functions of mouse and Laser pointer, which integrates wireless lighthouse and laser pointer. The mouse device mounted in the housing consists of a measuring lens located at the front end of the housing corresponding to the measured value. The digital image information output by the image sensor is obtained in real time, and the adjacent images are monitored. The position change of the image feature points is converted into the X direction of the mouse image processor, and the phase shift information is converted into the Y direction. And through the button matrix input image feature point control information, image processing program and button matrix, radio frequency controller monitor button input information matrix and modify displacement information, used for transmission of control information real-time imaging processor and radio frequency matrix button controller and button controller connected to radio frequency. The transmitter controller is used to transmit radio signals to the transmitting antenna of the computer; A processing case in a laser device includes a laser diode, a case at the front end of the laser diode processing, and a collision lens in front of the laser diode. Using the wrist laser swing, the cursor can move quickly in a large range, handheld laser pointer can move, the cursor can move slowly in a small range, suitable for the precise positioning of the cursor; It senses both the translation and rotation of the laser coil. Speakers can give full play to their physical abilities to make teaching, language and presentation more vivid and perfect.
Compared with the displacement detection system of the existing radio remote control, the invention assumes the path detection of the laser range of the invention, and uses image feature points when the laser moves, If the teacher must use the content on the projector surface, please hold the mouse in your hand, turn on the laser and display. If the teacher has to change or end the screening mode, he will not return to his fixed position on the computer, but he can use the mouse. This button is used as the left mouse button and the right mouse button. It is suitable for the teaching process and avoids the teacher to return.