發射器錯位對超音波定位系統之影響

本論文探討與分析在系統裝配時，若發射器產生錯位誤差對超音波定位系統可能造成的影響。本論文利用三個超音波接收器，安排成正三角形排列，並且在三角形中央放置一個超音波發射器，形成超音波定位系統。當超音波發射器在裝配的時候產生偏移或移位，會影響超音波定位系統的定位準確度。為了瞭解超音波發射器在裝配的時候產生偏移或移位對系統造成的影響，我們引入實際裝配時可能產生的偏移或移位誤差量以進行分析，偏移值以在x方向及y方向±0.2㎝以內為考量。本論文的討論與分析是限定在發射器前方1至2公尺、±15度的範圍內，且在系統的測距誤差可被忽略的情況下。

關鍵字

超音波；誤差分析

並列摘要

The effect of emitter location deviations for an ultrasonic positioning system is introduced in this thesis. The ultrasonic system has three sensors. These sensors are located at different apex of an equilateral triangle. An ultrasonic emitter is arranged at center of the equilateral triangle. In this thesis, the locations of all sensors are precisely correct, only the location deviations of the emitter are considered. To understand how serious the location deviation is, a small amount of deviation within ± 2 mm was added on X-direction or Y-direction of the emitter. To simplify the analysis on location deviation, the range finding error of the ultrasonic system is not considered in this thesis. Regarding the deviations’ effect, all discussions are limited to the area of ± 15 degree and 1-2 meters in front of the emitter.