Portable auxiliary touch screen equipment

The invention discloses portable auxiliary touch screen equipment, and relates to the technical field of touch control, in particular to portable touch control equipment with an ultrasonic positioning function. A capacitive touch screen, a resistive touch screen and a surface acoustic wave touch screen are generally adopted in the prior art, although the touch technologies are relatively mature, the touch technologies are generally relatively fixed, the invention aims to provide a more convenient touch screen device, and the device comprises a touch screen pen, three positioning receiving devices and a USB (Universal Serial Bus) wireless device. Wherein the touch screen pen generates ultrasonic signals, the three positioning receiving devices are responsible for receiving the ultrasonic signals and obtaining coordinate values of the touch pen on a two-dimensional plane through calculation, and finally, the USB wireless device transmits the coordinate information to the screen for control. The system is more c