THE DESIGN OF WIRELESS EMITTER OF SHIFTING SIGNALS
Abstract
This direction introduces a wireless emitter of some certain shifting signals. And this equipment can control the computer through tracking hand’s position in the space and the actions instead of the mouse.
This equipment set the position of the hand in the space and its action as the objects, making it possible for the mouse’s finger to follow the position then operating the computer according to the actions. The equipment is designed wireless and connected with the computer by UBS access.
The equipment consists of four parts. The first part tests the relative shift of hands in the space, and sends two routs of signals through the gyroscope of the fiber sensor. The second part examines the signals through AT89C2051, identifying the direction of the movement. The third part designs the wireless digital circuit for sending or receiving the signals. The sending circuit is composed as AM/ASK emitter by TX4915 single-chip microcomputer and the receiving circuit as ASK radio chip by RX3400 single-chip microcomputer, accomplishing the function of sending or reviving digital signals. The last part is the USB access, which adopts the CY7C63000 chip.
The wireless emitter of shifting signals adopts AT89C2051 as the core chip and ASK modem to transmit the data of the mouse. Meanwhile the current standard USB series access and adopted and the integrated circuit (IC) is designed as the main circuit. Finally the software ensure that the mouse will work under the waiting mode if it is not used at the time.
In brief, the equipment designed has the advantages of good versatility, small bulk and low power dissipation.