全國中小學科展

工程學

The Actuator

The purpose of the Actuator is to create a practical device that passively exercises\r the lower legs to help prevent blood clots, Deep Vein Thrombosis (DVT), in\r wheelchair-bound individuals of any age. The secondary purpose of the device is to\r improve range of motion of the lower legs and speed the recovery of their leg action. It is hoped that this invention will help to prevent DVT, and allow some people to even use their legs again, through passive or active muscular motion. The invention was produced using a number of prototypes and design sketches. Although the current model is quite functional, as it keeps the users legs in motion, it is still in the prototypic design stage.\r The Actuator is a simple to use, easy to retrofit device. It is also portable and will be\r able to attach onto the front of any wheelchair. It harnesses the motion of the wheelchair to drive the users legs in a circular motion.\r The invention was tested in a closed and controlled environment: the duration of the\r Actuator’s use was constant, a doctor was present to take blood pressure and heart rate, and the rotation speed of the user’s legs was controlled by keeping the wheelchair speed constant. The data was collected by monitoring heart rate and skin surface temperature of healthy individuals, and blood pressure and heart rate of a wheelchair bound individual.\r As seen with both experiments (wheelchair bound, and healthy individuals) heart rate\r increased. In addition, the wheelchair bound individual’s heart rate also noticeably\r increased, with an evident increase in blood pressure as well. However, skin surface\r temperature is sensitive to surroundings and often provides little indication of deep vein blood flow, thus the skin surface temperature measurements were too inaccurate for any conclusions to be formulated.\r The inventor’s grandmother had developed DVT’s in 2005, and passed away because of them. Had she been given an Actuator it may have prevented such a tragedy. Her death was the driving force behind the project’s development. Over the time period that this project has been in process, the true potential of this invention has been realized.\r I truly believe that it will revolutionize the way that we treat people in wheelchairs, and the way people in wheelchairs can treat themselves.

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.

環保綠能太陽能板冷卻及熱能回收系統設計實測與優化分析

本研究提出一套太陽能板冷卻與熱能回收系統,透過在太陽能板背面裝設一水冷板,以散熱鰭片搭配水強制對流來增加散熱的效率,並利用水塔的位能來提供冷卻水流的動力,在降低太陽能板溫度提升發電效率的同時,也可把熱能回收利用。本研究顯示正面水冷方式兼具清洗灰塵及散熱功效,背面水冷方式有效提升太陽能板發電效能及回收熱水效率;戶外日照實驗顯示,太陽能板輸出功率增加約12%,回收熱水效率約32.2%。藉由熱流分析軟體模擬優化水冷板模組後,太陽能板表面溫度及回收熱水效率可獲得進一步的改善。實用上,薄型大面積的水冷板,搭配溫控型的間歇性強制水冷及軌道式清潔系統,會是較佳設計組合,應用在屋頂太陽能板,將可達到提升發電量、回收熱水及屋頂隔熱的功效。

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.

浮體式波浪發電機模型之創作與應用

本研究為近海岸浮體式波浪發電設計,選擇理論推導與真實造波水槽測試,浮體式波浪發電設計概念,藉由一浮動載台將波浪運動能轉換為電能,而載台設計上利用浮體浮力,透過時規皮帶在浮體與活動掛重兩者中,產生時規皮帶的張力差,此刻的張力差與波浪的波高、週期與活動掛重三者產生連動效應,並有效率的將波能轉換為有用的機械能,最終再轉換為電能,本研究的波浪發電系統,當週期為1.5s、波高4公分時,有最佳週期平均發電效率為65%,依據模型相似理論縮尺為1/50,預估未來原型機組的最佳發電效率將發生在波浪週期10.6s、波高2公尺。

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。

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。

情境照明之仿真控制研究

本作品為一種可選定不同時間地點模仿朝陽/夕陽之情境照明系統,包括複數個發光裝置、濾光及擴散片,選擇接近朝陽/夕陽頻譜的波長,亦即複數個發出紅光、黃光及紅外線的發光元件。本作品提出新的控制法則,透過計時器、繼電器與時序間隔調整控制器,連接各發光元件,控制它們的發光狀態,提供旭日東升、夕陽西下等模式,使用者可調整發光顏色變換的時間間隔,延長夕陽下山前一刻的美好畫面,可讓使用者充分領略夕陽之美。本研究並且可以依某一筆特定時空資料,計算情境變化過程之每一時間點對應於色度圖之軌跡點,即時比對特定時空資料其對應於色度圖之軌跡線,而得到與該軌跡點間兩種累計誤差為最小距離之計算值,並啟亮與該軌跡點相對應之該發光元件組合,如此達到不同時間地點之模仿朝陽/夕陽及雲彩之最佳情境照明效果。

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。

自動化健康管理系統之研製

This study of health diagnosis based on using computer signal analysis technology. In order to make health management more perfect. The main points of this study are wrist pulse and body temperature information, remit to the database of the computer, analyze with the computer. With the internet network , transmit it to the medical center in order to carry and control, seek medical advice, prevent infective disease from spreading, defending healthy purposes of people, this research system includes the following six functions:(1) Automation measured: Can prevent popular disease from spreading , and ensure the medical personnel to avoid being infected.(2) The heart and lungs function warning system:When the pulse beats too fast or slowly, computer will send out warning signal immediately .(3) The body temperature is unusually warning system: When the body temperature is too high or too low, will send out warning signal immediately.(4) Pathology analyzed: Will pick and fetch the pulse wave form, which use the computer procedure to carry on frequency spectrum in order to analyze, then compared with database, with the purpose of analyze pathology. (5) The health managed: Remit the physiological information that quantity examines to the database of computer, offer pathology analysis, carry on the prevention of the disease. (6) Analysis results of the human exercise: With the operation of the database, we can analyze and obtain the effect that all previous sports accumulate .本研究係運用電腦訊號分析科技、資料庫軟體,使健康管理更為完善。研究重點為擷取人體手腕脈象、體溫生理訊息,匯入電腦資料庫,以電腦進行分析。藉由網際網路,傳輸至醫療單位,達到遠端監控、緊急就醫、防止傳染性疾病蔓延,守護國民健康之目的,本研究系統包含下列六大功能:(1) 自動化檢測:可防止流行疾病蔓延,並保障醫護人員避免遭受感染。(2) 心肺功能異常警示:脈搏跳動過快或過慢,立即發出警示。(3) 體溫異常警示:當體溫過高或過低,會發出警示。(4) 病理分析:將擷取脈搏波形,運用電腦程式進行頻譜分析,與資料庫比對,藉以分析病理。(5) 健康管理:將量測之生理訊息匯入電腦資料庫,提供病理分析,進行疾病之預防。(6) 運動成效分析:藉由資料庫之運作,可解析獲得歷次運動累積之成效。