在現今這個社會中，瓦斯是生活中不可或缺的能源，由於家中與商店仍普遍使用桶裝瓦斯，故以消費者的角度提出問題，ㄧ是無法準確的知道瓦斯殘餘容量，二是使用中擔心瓦斯外洩或一氧化碳中毒。另外，與瓦斯業者訪談後，發現目前瓦斯行所遇到的困境如下:人力搬運管理不當、不知消費者的使用狀態、客戶等待過久以及無法正確計算庫存量等。本研究建立一個物聯網之遠端智慧瓦斯容量感測系統，從瓦斯行的角度去幫瓦斯客戶建製一套檢測瓦斯容量的方法，使家庭跟商家的生活環境更安全。首先，為瓦斯桶創建一個二維條碼，從而可以方便地了解瓦斯桶相關資訊（如ID、存儲位置等）和有用瓦斯氣體殘餘量，然後客戶和瓦斯行可以通過手機應用程式和物聯網監控最新的燃氣瓦斯消耗量，其他功能包括瓦斯是否外洩及一氧化碳濃度是否超標等。並開發專用App完成資料的收集，將收集資料藉由網路傳輸到雲端作業平台ThingSpeak。在雲端的資料可以經由網路達到資料的共享及同步更新。此外，手機App與雲端平台還有即時監控與警示功能，如有危險可立即知會客戶跟瓦斯行，業者也可以透過網路平台知道所有客戶的使用狀態，提前幫客戶更換瓦斯作準備，亦可減少瓦斯桶庫存，達到雙贏的局面。

In nowadays society, gas is an indispensable energy source for life. Since barreled gas is still commonly used in home and shops, questions are raised from the perspective of consumers. Firstly, it is impossible to accurately know the residual gas capacity. Secondly, it has to worry about gas leakage or carbon monoxide poisoning during use. In addition, after interviewing with gas providers, it was discovered that the current difficulties encountered by the gas providers are as follows: improper human handling management, ignorance of consumers use status, customers waiting too long and inability to calculate inventory correctly. This research establishes a remote intelligent gas capacity sensing system based the Internet of Things, from the perspective of gas industry. It can help gas customers to establish a set of methods to detect gas capacity to make the living environment of homes and businesses safer. At first, a QR code for each gas tank is created, therefore the gas tank information (ID, storage location etc) and useful gas residual amount can be conveniently known via IoT. Then the user and supplier can monitor the up-to-date gas consumption through the mobile phone App or internet web page of ThingSpeak. The other functions include whether the gas is leaking and the carbon monoxide concentration exceeds the standard, etc. Furthermore, an Android App is developed to complete the data collection and transmit the collected data to the cloud operating platform ThingSpeak via the internet. The data in the cloud can be accessed through the internet to achieve data sharing and synchronization update. In addition, the mobile App and cloud platform also have real-time monitoring and warning functions. If there is a danger, customers and the gas providers can be notified immediately and the gas industry can also know the all consumer's use status through the internet platform to help consumers to replace the gas tank in advance and reduce the inventory of gas barrels to achieve a win-win situation.

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