Wireless laser pointer with air mouse function

Abstract

The invention discloses a wireless laser pointer with an air mouse function. The wireless laser pointer comprises a shell, a mouse device and a laser pointer device, wherein the mouse device is arranged in the shell and comprises a measurement objective lens arranged at the front end of the shell, an image sensor arranged corresponding to the measurement objective lens, an image processor connected to the image sensor, a button matrix for inputting control information, a radio frequency emission controller connected with the image processor and the button matrix respectively and an emission antenna connected to the radio frequency emission controller; the laser pointer device is arranged in the shell and comprises a laser diode arranged at the front end of the shell and a collimation lens arranged in front of the laser diode; the button matrix comprises a laser button switch; and the laser diode is connected with the laser button switch and is controlled to be turned on / off through the laser button switch. The invention has the advantages that: the wireless laser pointer is not influenced by circuit noise, X-axis and Y-axis cross interference does not exist, and the like.

Description

technical field [0001] The invention relates to a data processing device, in particular to a wireless laser pointer with an air mouse function, which can be widely used for human-computer interaction in the multimedia information presentation process in teaching, conferences and other occasions. Background technique [0002] At present, multimedia has been widely used in various occasions such as classroom teaching, conference speeches, and business presentations. It can use rich forms of expression including text, pictures, photos, sounds, animations, and videos to convey information to participants. Commonly, the user uses a mouse for human-computer interaction, and often needs to cooperate with a laser pointer to indicate the content of the speech. Because the mouse and the laser pointer are products that are opposed to each other, it is not convenient for users to use. For this, the invention patent No. ZL200620014423.X authorized and announced by the State Intellectual ...

AI Technical Summary

Problems solved by technology

The wireless presentation controller can realize the remote operation control of the multimedia presentation, which provides great convenience for the user, but also has the following problems: (1) the movement caused by the user waving the wireless presentation controller The acceleration is very small, about 0.05~0.1g (g=9.8m / s2), which is about the same order of magnitude as the error signal generated by the acceleration sensor based on MEMS technology, so when the user swings the wireless demonstration controller with a small force , the signal-to-noise ratio of the output signal of the three-axis acceleration sensor is too low to judge the movement of the wireless demonstration controller; (2) For the micro-mechanical acceleration sensor, the acceleration input in the orthogonal direction of the X and Y axes should not cause acceleration in theory output, but due to the structural form and structural parameters, it will more or less cause the acceleration sensor to have an output, causing cross acceleration error interference; (3) The micromechanical acceleration sensor can only measure the linear motion of the carrier, in order to detect the wireless demonstration controller The rotation of the micromechanical gyro sensor needs to be added, which increases the complexity of the system and increases the product cost

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