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工程學

主動式車門安全開啟裝置

根據我國警政署統計,現今由於汽車駕駛人或乘客因為開車門不慎而導致的車禍致傷或致死的悲慘案例幾乎天天都在發生,嚴重影響了道路行車安全,更造成寶貴人命的無謂損失以及社會成本的慘痛付出。本研究主要目的係針對防止此類車禍一再發生,利用超音波測距模組、Arduino晶片模組做為處理系統,除現有閃燈、蜂鳴等被動裝置外,加上了主動式阻尼制動器,主動防止車門在機車騎士經過時被推開,以達到避免這種意外一再發生的效益。本研究發現採用傳統液壓式阻尼器成效良好,但是近一步改採磁性流體填充之阻尼器之成效仍有待改進。

Prototype Educational resources for teaching basic pneumatic

The didactic prototype for the teaching of the pneumatic Basic is designed, so teachers can instruct knowledgement of pneumatics focused to identification, handling and application of its elements based on constructivist theory in which the student learns making, working on projects and in a collaborative way. This implies that his presentation should include the basic elements to be used in this study area, as well as allowing that the student can interact with it, still easy to use, and take them by the teacher into his area of education, which can be a classroom, room, Auditorium, workshop, lab, and even training courses to the industry, the only thing that requires is compressed air (2 to 4 bars). As well as, to create a secure environment for the user when this is manipulating. Its construction based on a compact, lightweight and ergonomic, structure to ensure that it can be transported without difficulty. Also that must comply with the minimum essential to enable the student to acquire competencies in the curriculum which consider the identification, handling and application of pneumatic elements; IE has the following 2 directional valves 3/2 NC, 1 directional valve 3/2 NC-operated with a knob, 2 valves 3/2 pneumatic drive, a 5/2 valve NC NC of stable pneumatic drive, 1 valve of simultaneity or function, and 1 valve selector or function, or double effect with pressure regulator piston1 piston of double effect, 1 piston for simple effect, 1 valve 3/2 NC with motorized drive and roller.

Smart Washer

Data and records show accidents caused by loose bolts or nuts often occur in building or mechanical structures all over the world. They may be train derailments, parts falling off amusement rides, escalator breakdowns or wheels coming off automobiles. These incidents can often cause serious casualties and should not be ignored. At present, the only devices used to prevent screws loose are spring washer and nylon locking nuts, but they are not readily detectable with the naked eye when they failed to tighten. Based on simple mechanics and spring principled, our “Smart Washer” has been designed to detect loosen screws. Whenever the bolt or nut gets even slightly loose, the lower part of the washer will spring up, this is a sign to alert and remind the user to carry out maintenance and re-tighten the loosen screw before serious accidents occur.

魚能發電之開發及應用

「魚能發電」是全新的能量擷取研究,讓魚類游動變成電能。海洋魚類生態研究著重在魚類追蹤,傳統追蹤器受限於電池容量無法長期追蹤,故以魚類追蹤器為目標,以流體分析軟體ANSYS模擬三維流場不同水流速度與形變量,找出追蹤器的最佳設計為前端鈍體為「正三角柱加尾翼」。 透過自製大型文氏管,將迴流水槽原僅每秒0.6公尺流速提高9倍達每秒5.37公尺,是目前台灣壓電發電水流實驗的最高流速。並透過快速傅利葉轉換及自製微電能整流儲能模組,獲得水流速度之頻率特性、發電量上升率,得到許多寶貴的研究數據。 本研究提出創新的壓電陶瓷軟性固定法,有效解決傳統迫緊固定易斷裂及防水問題,讓壓電陶瓷能應用在「魚能發電」;亦自製微電能整流儲能模組量測電能、仿魚尾鰭之不對稱尾翼,獲得最高發電量10μW,是魚類生態追縱新里程碑。

Graphene Nanoplatelet-Embedded Acrylic Paint for Low Cost Waterproof Paintable Capacitive Sensors and Free Standing Supercapacitors

Modern capacitive touch input and proximity sensing technologies are rigid and limited to flat substrates making it impossible to apply them onto objects with irregular geometries like textiles or car handles. Furthermore, the high cost restricts the applications to small surfaces and cannot be scaled up to be applied on large surfaces such as walls. Therefore, a paint-on scheme would broaden the applications of capacitive touch input and proximity sensing devices. Paintable capacitive sensors are an emerging technology hindered by the high cost and lackluster properties of conductive paints. Existing conductive paints utilize expensive filler materials such as silver and gold to achieve high conductivity but suffer from low surface area. High surface area is critical for capacitive proximity sensors to detect objects from far distances and for overall sensitivity. Carbonaceous alternatives using micronized graphite exhibit low conductivity, require high loadings and most disintegrate when in contact with water. Multilayer graphene nanoplatelets are investigated for their high conductivity, high surface area, low cost, flexibility and eco friendliness. A waterproof acrylic latex is combined with multilayer graphene and dispersed via bath sonication. The optimal time of sonication and optimal graphene loading is determined through systematic testing. An Arduino Uno is loaded with a CapSense library and the graphene based paint is utilized as the interface to sense both touch and proximity.

不偏不倚--奈米級修準方法與敏感度評估之研究

Positive –A Study on a Nanoscale Revision Method and Sensitivity Evaluation This paper took a pyramid and a fixed point as the reference level. It was the intention of our team to establish and prove a new hardness value revising method that is to be used in the deflection of indentation of nano indentor. Such new method was named Material Surface Nanoscale Hardness Revision Method with which we re-measured various materials and error sensitivity of hardness values. We obtained the following conclusions:(1). This paper revision modification method have a highly precision. (2). When the round tip or plane tip was closed to ideal indentor tip, the contact areas during indentation process were close, not demonstrating significant difference. (3). The indentation triangle created when loading effort P was similar with the one left on the sample material when unloading the effort; thus, even though the sink-in and pile up effects due to the mechanical properties of sample material caused the differentiation of side lengths and two indentation areas, the angles of two indentation areas was the same. (4). When the effort was loaded by the tip onto the sample material, if the tip had a certain deflection ψ or rotation ω, the indentation triangle left on the sample material was still significant. (5). In the observation of the indentation triangle left on the sample material, when the triangle cannot become a regular triangle, it meant that there is a deflection or rotation happening to the tip and a further revision of the deflected angle ψ or rotated angle ω is required. (6). The hardness value revision method under indentation deflection situation had the best effect on the projected area revision; the second was on the indentation volume revision and than on the indentation contact area revision. (7). The hardness error sensitivity of hardness value revision method under indentation deflection situation had the best effect on the projected area; the second was on the contact area and than on the indentation volume revision. (8). The method proposed by this study was proved by the silica and aluminum single crystal indentation results and is thus able to be applied to the engineering in the nanoscale measurement of metal materials to obtain more precise data.不偏不倚-奈米級修準方法與敏感度評估之研究在這篇研究報告中,以一個三角錐和一個定點為基準,本團隊建立並證明一個新的在奈米硬度測試儀壓痕偏斜情況下,硬度值的修正方法,取名材料表面奈米硬度修正方法。在新的材料表面奈米硬度修正方法下,重新檢測各種材料及硬度誤差敏感度,得到許多好的結論:(1)本研究之修準方法具有高度精確性。(2)利用圓球尖端或平面尖端的方法近似理想壓頭時其壓痕過程中之接 觸面積相近,並無明顯差異。(3)作用力P 施加(Loading)時之壓痕三角形與卸載時(unloading)殘留於測試材料上之壓痕三角形係屬於相似形;因此,即使各該三角形之邊長因為該測試材料本身的機械性質所產生的滲入(sink-in)與堆放(pile-up)的效應而造成作用力施加與卸載時,壓痕面積上的差異。不過,該兩壓痕面積的角度卻是一致的。(4)當該作用力隨著該壓頭施加於測試材料時,若該壓頭產生某一程度的偏斜ψ 或旋轉ω 時,該殘留於測試材料上之壓痕三角形仍然具有代表性。(5)藉由觀察該殘留於測試材料上之壓痕三角形,當該三角形無法成為一正三角形時,其係表示壓頭已產生偏斜或旋轉的之情況,需要進一步對該偏斜角度ψ 或旋轉角度ω 進行修正。(6)在壓痕偏斜情況下硬度值的修正方法以投影面積修正為最佳,其次是壓痕體積再其次是壓痕接觸面積方法作修正。(7)在壓痕偏斜情況下硬度值修正方法的硬度誤差敏感度則以投影面積為最佳,其次是接觸面積再其次是壓痕體積修正方法。(8)本研究提出之修正方法經由矽、鋁單晶壓痕結果驗證,足以說明適用於工程學上金屬材料進行奈米壓痕硬度檢測時更精確的數據獲得。

肘節式駐腳架

我媽媽體重只有38公斤,每次她在牽機車一直在抱怨車子好重,媽媽因為個子很矮,只有150公分,而且她每次又喜歡穿高跟鞋,所以每次在騎機車、牽機車,而且她又怕車子cc數太小容易被風吹倒,自己又喜歡騎150cc的機車(機車重量一般為70kg~250kg),每次牽機車時自己還常常牽到跌倒,跌倒曾經有一次跌到骨折住院(技術真差!),或每天在喊著關節痛、腰酸背痛,我對我媽媽的行為都感到很辛苦,機車有那麼重嗎?結果我自己牽才知道有那麼重,所以我一直在想,在媽媽的抱怨,體重38公斤、身高150公分這麼瘦弱的女孩子,又騎著150cc的機車,說真的機車的腳架對她來講受力實在太大,所以我一直在想怎麼去設計一個機車腳架,可以讓媽媽不再那麼痛苦、不再有那麼多的抱怨!甚至穿高跟鞋也很好用,所以我一直在想機車腳架怎麼去使用它,直到機械科二年級我上了機件原理裡面有解說機構,我想所有的機車駐車架都是用力矩原理,那為什麼我們不在力矩原理再加上使用肘節機構(Toggle mechanism),因為機件原理講肘節機構是最省力,肘節機構當它形成一直線的時候力量最大,所以我利用高職所學的所有的東西來設計肘節機構設計一個省力的機車腳架,使媽媽不再痛苦、讓媽媽很輕易的就把機車立起來,這就是我的設計---- 肘節式(Toggle mechanism)駐車架。

Universal Cable Tester

The purpose of the research was to develop en easy to use/ affordable\r product that can indicate defects in any kind of cable carrying an electrical\r current or signal without any damage to the cable… and if there are defects,\r it can show you the kind of defects.

以有機溶劑摻雜改善高分子分散型液晶性質之探討Resistin透過活化WHSC1/Twist途徑促進肺癌惡化

高分子分散型液晶(Polymer Dispersed Liquid Crystal,簡稱PDLC)是由高分子聚合物包覆的液晶微滴所組成,透過電場量值的改變能有不透光與透光的變化。然而目前PDLC的閾值電壓相對於傳統液晶而言較高,成為發展的阻礙之一,因此我們希望透過摻雜有機溶劑的方式來降低PDLC的閾值電壓。 我們先探討不同製程變因對PDLC的影響,以建立影響PDLC光電性質的理論模型,接下來我們嘗試摻雜不同的有機溶劑,並發現以乙醇的效果最佳,於是我們便進行不同重量百分率的摻雜實驗以及調整摻雜方式。我們發現酒精的摻雜可以大幅降低PDLC的閾值電壓,摻入25%的酒精約可使閾值電壓降低50%,除此之外,酒精的摻雜似乎可以降低PDLC的遲滯效應,而PDLC的初始光穿透率與摻入酒精的重量百分率約成正相關。這樣的結果相信對於PDLC在節能省電的應用方面將有很大的幫助。

以分頻多工及交流差動磁場強度為基礎之定位系統應用於無人飛行器控制系統的研究

本研究提出一套創新的定位系統,僅需設置單一已知參考點即能達成高精確度的定位,由該參考點上的兩個永久磁鐵的靜磁場轉換成時變場型之交流磁場,再透過分頻多工的數位訊號處理,分離出這兩個磁場源之差動磁場強度及其相位,以求得物體的位置資訊,達成不受空間中的多重路徑干擾及障礙物影響的精確定位。透過實驗證明,本套系統在實驗設定下具有10公分以內的定位精準度,同時可以支援微型無人飛行器的即時定位,對於未來各種行動裝置、穿戴科技與自動控制系統之定位需求,可提供具體的貢獻。