用 Raspberry Pi + Python 製作阿里山小火車上的影音導覽系統 - sosorry
歡迎來到 PyCon TW 2023 共筆
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共筆入口:https://hackmd.io/@pycontw/2023
手機版請點選上方 按鈕展開議程列表。
Welcome to PyCon TW 2023 Collaborative Writing
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Collaborative Writing Workplace:https://hackmd.io/@pycontw/2023
Using mobile please tap to unfold the agenda.
Collaborative writing start from below
從這裡開始共筆
任務目標
- 多節車廂同步播放影音
- 毫米級定位系統
- 遠端系統更新
定位
- 傳統GPS,使用GNSS訊號,精度在5m
- Real Time Kinematic(RTK)可以到毫米級
- 架構:基站+流動站+電話(20km)
- 原理:接受GNSS訊號+合併RTCM校正
影音播放
播放器
兩個方案
- OMXPlayer(2012~2019)
- 優點:支援硬解H.264
- 缺點:不支援64bit kernals
- VLC(2019~)
+
同步播放方案
切分or溶接?
遠端更新
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Python專案
- 火車頭接收GNSS訊號
- 使用MQTT傳遞訊號給車廂
QA
- 實際導入有什麼問題?
- 隧道問題怎麼解決?
- Pi的震動問題?
- 不同Pi4的規格有差異嗎?
- 定位有考慮用Beacon?
- 更新走什麼?
Below is the part that speaker updated the talk/tutorial after speech
講者於演講後有更新或勘誤投影片的部份
投影片下載