全國中小學科展

工程學

仿生科技應用於提高太陽能板發電效率之研究

本作品自行開發組立氣體輔助彈性氣膜球實驗系統,並研製可調控之類複眼陣列結構母模具系列實驗設備,藉以複製出類昆蟲複眼之陣列微結構,同時複合石墨烯(graphene)並將其裝設於太陽能板上進行系統化實驗,探討類昆蟲複眼之陣列微結構對太陽能板發電效率之影響。實驗結果顯示,類複眼陣列透鏡結構,其單一特徵形狀愈小、密度愈高(週期愈小),其發電效率愈佳,本實驗條件下,發電效率最高可提升達7.86%,此外,本研究在光捕捉上再為仿生類透鏡穿上自然界的類透明外衣複合石墨烯情況下,其發電效率更佳,透鏡面噴塗石墨烯複合薄層1μm厚度,發電效率短時間提升最佳為14.21%,但隨著光照時間的增加(24小時)後,發電效率提升最佳為12.45%,本研究同時增能探討調控菲涅爾透鏡(Fresnells)聚焦方式,並獲得經最佳聚焦位置的獲得,將有助於對太陽能板發電效率提升。

Using P.I.P. to strengthen roads: Plastic incinerated by plastic

People have become accustomed to single-use plastics. These are plastics that are used once only and are then thrown away or recycled. A piece of plastic can only be recycled 2-3 times before it is of bad quality and can no longer be of use. (Achyut K. Panda, 2019). Plastic waste fills up landfills and oceans, becoming hazardous and harmful to wildlife, while emitting greenhouse gasses. Alternatives, such as metal straws and paper bags have turned out inefficient and plastic is still a great need in society. Another way of getting rid of waste plastic is to burn it. Fossil fuels such as coal and natural gas are being utilised to burn plastic in industry. This causes many harmful emissions, such as carbon dioxide and carbon monoxide released from burning the plastic. It results in more damage being done than just leaving the plastic in a landfill. These emissions can be cleaned before being released into the atmosphere. Plastic is made of petroleum, so when it is burned it is converted back into a fuel. Plastic can be burned under controlled conditions to create a fuel source that can be used, thereby utilising the waste plastic. The research conducted aims to investigate the use of plastic waste to burn other plastic to create a renewable fuel source and to eliminate plastic waste.

Automated Inflation and Pressure Regulation for Recreational and Professional Cyclists

Cycling is a very popular mode of transport as well as a famous sport around the world. Many people enjoy this sport either professionally or recreationally. Cycling in the UK alone has grown up to 200% since lockdown in 2020. (Chandler, 2020) Cyclists make use of a broad selection of products to enhance their performance. Those products range from wireless gear shifting, advanced geometry, smart suspension. This project is aimed to indicate the importance of tire pressure and to introduce a product which will be able to adjust tire pressure while cycling. This product will give cyclist an advantage on different terrains as well as eliminate some common problems amongst cyclists. Flat tires are one of these problems. It occurs commonly amongst cyclists and can happen due to a variety of reasons. Another problem is wrongly inflated tires. This causes unnecessary loss in a cyclist’s power and speeds due to the high rolling resistance between the tires and the surface. This then results in losing time whether racing or commuting. In an article published in 2014 in Velonews.com, Lennard Zinn states: “Whether on tarmac or singletrack, a tire with lower rolling resistance reduces the power required to move forward while also providing a better quality ride. The tire absorbs small bumps by not transferring them into the bicycle and rider, resulting in a smoother ride, faster speeds, and better cornering." (Zinn, 2014) Taking this in consideration it becomes clear that it is important to develop a system which is able to control tire pressure.

斜槓元宇宙-智慧新農機:全球首創利用Arduino自動偵測「迴轉耕耘機」犁耕土壤深度的火犁仔(曳引機)、解決人類糧食危機

本研究以機電整合,發明了【曳引機迴轉犁偵測系統】,將大型農業機械智能化,並優化及整合工程技術,設計了六大系統,藉由量化評工程效益及作物的產量變化,觀察設計成效。 根據文獻,水稻管理使用「灌溉系統」+「雜草抑制蓆」+「生物肥料」的機制,可以增加產量[1,2]。因此我們優化這些機制,並設計「精準深耕」、「智慧噴桿」、「滴灌系統」形成六大系統。利用自創的【曳引機迴轉犁偵測系統】,犁耕時就可以在每一寸土地上,精確控制土壤深度在25cm的「精準深耕」。我們也發現,在這六大系統的協同效應下,不僅省下3~12倍的作業時間,同時在加乘效果的作用下,產量可以大幅提高至79%。 本實驗花二年時間,在台中清水地區1.2公頃的農地,實際建構這六大系統。並使用無人機偵測飛行高度的3D立體影像感測器、Arduino微控制器、燒入自行設計的Arduino C程式,成功發明【曳引機迴轉犁偵測系統】,並裝在大型曳引機,用來偵測迴轉耕耘機翻鬆土壤的深度,同步將該數據立即顯示在駕駛室的儀表板。 目前全球六大品牌大型曳引機,造價超過新台幣400萬元,尚無一款具有本研究自創的迴轉犁自動偵測功能。

朽木生花-初探以中藥萃取液對木材染色之防蟲抑菌效果

In our experiment, we used traditional Chinese medicine to dye on cheap wood, in addition to avoiding the impact of chemical paint on human body; After dyeing, the color and texture quality of the wood are improved, which makes cheap wood have higher price and improves the value of wood; At the same time, it can reduce the felling of slow growing precious wood, which has the functions of environmental protection, earth love and carbon saving. The test material was pretreated with hydrogen peroxide and surfactant, and the bleaching effect was obvious. After dyed with different Chinese medicinal, soak in strong acid and alkali solution for 15 minutes, which shows that strong acid and acid treatment is not allowed. On the other hand, after 15 minutes of immersion in detergent, the color difference value is less than 2, and the rubbing fastness is above grade 4. In the bacteriostasis experiment, no fungus grew in the first 3 days, and it did not grow in the 12th day. In the anti-termite experiment, the mortality rate on the fifth day was 65% for Lithospermum and 83.8% for Wolfberry, and the other groups had a good effect of total elimination. While plastic products have a great impact on the environment, wood that is dyed or modified with natural colored dye, its environmental value far exceeds the human visual perception.

提升纜車遭遇陣風之安全性-利用自製調諧質量阻尼器與可調式吊臂

遭遇強風是纜車停駛的條件之一,然而我們認為當低於停駛標準的陣風與纜車產生共振時,更會使纜車產生擺動造成危險。因此我們參考真實纜車的比例,製作出模型探討不同頻率及速度陣風對纜車造成的影響。我們發現即使風速未達停駛標準,但當其頻率與纜車接近時,即會發生共振並產生將近 30度的擺角、強度相較持續風吹拂增加 60分貝。 為了減低振動,我們首先製作可調式吊臂。但因為其在實際製作上具有困難,且可能造成乘客的不適。為此我們製作了調諧質量阻尼器,當共振發生時,將砝碼透過伺服馬達放下,使纜車的振動傳導至垂下的擺減緩振動。結果顯示阻尼器能將振動減低 10分貝,最佳的組別甚至有 16分貝的減振效果,能將擺角減低至小於 2度。期望將來能將系統自動化,在纜車遭遇陣風時自動調變阻尼器,抑制振動。

以仿生袋鼠進行跳躍研究並應用於外骨骼

此研究選擇以袋鼠為仿生對象,希望應用袋鼠高速移動的特點,製作仿生動物,並觀測其跳耀動作,提升動作的流暢度。 首先對澳洲袋鼠在跳躍時的動作,進行動態分析,取得跳躍時其最佳腿部彎曲動作。經歷二次的外觀與整體結構更改,以及數十次的細微尺寸與外觀修飾的調整,完成了此次使用的仿生袋鼠。 此仿生袋鼠使用18公分長的小腿為基準,設計跳躍動作影響便因。首先更改個部位的馬達扭力進行跳躍距離和高度的紀錄,測驗出距離最遠,高度最高的數據,並依同樣的變因條件,進行腿部長度的變更,同樣求得最佳數據再進行下一實驗,以此求得在各變因下最佳的條件。 本研究包含生物觀察、機械繪圖、動作分析,而希望此實驗數據在未來能應用於跳躍型的外骨骼。

DEVELOPMENT AND USE OF LASER 3D SCANNER OF PREMISES

This research work is devoted to the stages of development and creation of a prototype of a laser 3D scanner model, programming of a controlling microcontroller, construction of 3D models of a scanned object. In the course of the work, the market of 3D scanners, which are used to build three-dimensional models of premises, was analyzed, the equipment necessary for the development and creation of the prototype was analyzed, as well as the software necessary for the operation of the prototype. The result of the work was the creation of a laser 3D scanner based on an Arduino microcontroller using a Lidar type sensor that scans and builds 3D models of objects. This working model of the 3D scanner demonstrates good capabilities and turned out to be easy to use.

鑑色~藍染動力進行式

傳統藍染,染個深藍色的布,需要反覆侵染二、三十次才行,而每一次洗滌,都是藍水會對環境污染!我們自製鑑色儀器的設計,以白光照射吸光儀,讓光敏電阻感光後,測量一般電阻電壓大小,以不同濃度製作檢量線比較染液濃度;染布鑑色儀則是以GY-33顏色感測器校正後,快速測出色布上同樣區塊面積的RGB值,再利用線上顏色代碼轉換工具,轉換成HSB 值來分析染布顏色。而染布動力的部份我們想把一直都是用塑膠積木製作的二~六槳水車更新成金屬,然後再次比較出不同水位負載物的氧化及還原轉速,希望能找出最佳水車運轉速率及水位高度比,為了因應長度較大的藍巾,水車轉動還加入程式控制順逆轉軸的動力輪替。最後,我們比較增加風速或溫度可否加速藍染氧化之定色,讓精準快速的藍染文化成為可能。

PBC~ A home-use detection device for brain tumors that compress the brain stem and optic nerve

腦部腫瘤是沉默殺手, 藏匿在腦中數十年。 一旦發作,通常都會造成巨大的影響。雖有數種高階儀器,可以檢測。但檢測過程繁複、 等待時間以及價格, 對於民眾都是不小的負擔。 腦部腫瘤的診斷方式為: 神經內、 外醫生會用筆燈對患者做初步的瞳孔光反應檢查。 藉由患者瞳孔縮小的速率,判斷是否要安排進階的檢查。但此行為仰賴醫生的經驗,沒有統一的方法及數據可供判斷。 本研究設計一款成本約$1,300 元, 重量僅 159 g,圓柱直徑與柱高皆約為 7cm 的隨身裝置。 藉由 MCU 控制攝影機, 頂部 1.44 吋 TFT 螢幕可即時顯示患者眼部狀態,檢查結果計算後, 也會立即顯示在螢幕上。除提供醫護人員即時數據化的解讀患者狀態。更協助醫護人員在做瞳孔光刺激檢查時,有科學化的標準。