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    JS、RFID與行動設備,實戰自行車繞圈賽即時成績系統 === ###### tags: `2018`, `R1` ##### 位置: R1 ##### 講者:詹凱盛 {%slideshare 貼這裡xxxx/yyyy %} --- [toc] --- ## 個人經歷 - 社會系畢業的前端軟體工程師 目前在Yahoo任職 > 文組也可以寫程式的 [name=阿財] ## 台灣城市單車聯盟 - 成立兩年來做過許多計畫 - 台北高雄都有舉辦相關活動 ## 為何還需要舉辦單車競賽活動 馬斯洛需求最高層級 **自我實現** ## RFID 自行車賽必備技術 ![](https://i.imgur.com/CbExxfP.png) - 排除門禁卡(自行車速度、距離考量) - 微波成本太高,因此選用超高頻RFID ## 1.0版本 ![](https://i.imgur.com/w1hIUQA.png) ![](https://i.imgur.com/w1hIUQA.png) - RFID 讀寫器:Java SDK - 讀寫器接收指令 - 讀寫器回傳資料 Socket.io - 後台網站:MongoDB + React - 前台網站:PReact - 系統架構 - RFID系統 - 家用主機(NAS) - 架構不夠穩定,陷入隕石開發法 ![](https://i.imgur.com/DXqqdjz.png) 1. RFID讀取效果不佳 - 更換RFID讀取模式,將充電時間長的模式換成充電短但回傳頻率高的模式 2. 網站response不穩 - 女兒的灰姑娘影片解碼影響家裡網路速度 3. Bug 太多 ## 2.0版本 ![](https://i.imgur.com/XF9ggYG.png) - 調校java SDK - server :租借google k8s 發現問題 1. 網路斷線時,比賽會中斷 - 比賽現場需要有本地主機 - 本地端與遠端主機在進行資料同步 2. API 漏接讀取資料 > 又被隕石炸了一次 - 是不是 Sails.js 太肥了,要不要用 Golang 改寫 API erver - DualTarget讀取模式時,每張標籤通過天線感應15~20次,20名選手,相當於600QPS - 解法 : ## 3.0版本 ![](https://i.imgur.com/kBznWbM.png) 1. 網站太醜 2. 網站的選手名單加大頭照 ## 4.0版本 1. iOS APP選手拍照功能 2. 找到贊助商,真的把比賽辦起來了 - 比賽一個月前宣傳,媒體觸及率超過百萬 3. 後台管理系統 - 裁判 - 選手 ## 心路歷程 1. 去年五月到今年三月,開發時間共八個月 2. 前端長得漂亮很重要,後端如何亂搞別給人 家看到就好 XD 3. 想當Full Stack ? 開個Side project練練功 4. 即將發生隕石開發時,務必先檢討程式設計 5. 技術不熟的情況下,推薦使用framework降低踩雷風險 6. Unit Test 不可少

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