The wireless location electronic whiteboard based on ultrasonic signal has many advantages, but this type electronic whiteboard is easily interfered by aculeated sound signal because the frequency of the ultrasonic signal the frequency is lower.
英
美
- 我們實(shí)驗室在基于無(wú)線(xiàn)定位理論的基礎上，已成功研制成基于超聲波信號定位的多功能交互式無(wú)線(xiàn)定位電子白板。 基于超聲信號定位的無(wú)線(xiàn)定位的電子白板雖然有諸多優(yōu)點(diǎn)，但是由于超聲信號的頻率較低，在實(shí)際應用場(chǎng)合極易受到其它尖銳聲音信號的干擾。
