- 學位論文
優化自動感應測距沖水系統之研究
Optimization for the automatic measuring induction distance of the flushing system
摘要
日常中馬桶及小便斗自動感應沖水器裝置為紅外線發光二極體感應，但常有誤判情形，只要有物體靠近便會觸發感測器，且由於該感應器僅能進行單純之距離感應，並無法有效判斷使用者與馬桶及小便斗之相對位置，所以就算使用者站的位置離馬桶及小便斗太遠，該感應器仍會啟動止水閥進行沖水，不僅如此，該感應器更會因為其他路過之物體或物體之顏色不同而有所誤判。紅外線發光二極體感測模組無法正確計算出使用者的使用位置，會因使用者身體稍微移動而感測誤判使用者離開，而有誤判動作沖水情形，長期下來便會造成水資源之嚴重浪費。 本論文使用雷射脈衝測距技術，將設於小便斗上方，並使控制單元與小便斗之止水閥連接，而利用雷射感測單元判斷出使用者與小便斗之相對位置，由控制單元開啟止水閥進行沖水。使達到可正確及精準辨識使用者之位置、避免誤判、以及有效節省水資源之功效。雷射為人工光源，具有不同於其他光的特性，具備高強度、單色光、相干性、方向性等優點，故能準確判斷被測物位置。現今雷射技術也越來越成熟，價格也越來越低，因此實用化技術被廣泛開發，應用於生活中各種領域中。
並列摘要
LED infrared sensors nowadays have been widely used in the automatic sense-and-flush device for toilet and urinal. Nevertheless, this type of sensor can only detect the distance between user and device instead of their relative position, which lead to misjudgment that the device flushes its urinal as long as something approaches even if the user is still far away from it. Moreover, this type of sensor may make different misjudgment resulting from the color of the approaching object. On account of that the LED infrared sensor module is not able to figure out the precise position of the user, it would consider that the user is leaving while the user is just moving his body slightly and activate the water valve to flush. If things go on like this, huge quantities of water resource will be wasted. In this study, we apply the laser pulse ranging technology to the sensor module of urinal by connecting this type of sensor module between the control unit and water valve. The laser detector unit is able to figure out the relative positions between user and urinal, and then the control unit activates the water valve to flush. By means of this laser pulse ranging technology, the sense-and-flush device becomes more intelligent and we can substantially reduce the waste of water resource. In summary, the laser is an artificial light source, which has the characteristics different from other lights. It has the advantages of high intensity, monochromatic light, coherence, and directivity, therefore it makes our devices able to determine the position of the measured object accurately.