隨著硬體技術的進步、無線傳輸技術的進步，以及家庭無線網路的架設率提升，同時智慧家庭的產品越來越多元，充斥在我們的生活中，許多的事情都可以自動且高效率的完成，讓我們的生活相較於過去，變得更加的方便。
本論文以物聯網為基礎，提出一套應用於居家冰箱內的食材存量監測系統，具有存量檢視、低存量警示、購買引導以及歷史查詢的功能。使用了低成本的嵌入式開發板STM32F103C8T6，利用荷重元(WS-50KG-1KR)和類比數位轉換器(HX711)作為重量感測器，並使用溫度感測器(DS18B20)偵測環境溫度，再對重量數值進行修正，同時使用藍芽模組(HM-10)傳送給冰箱外的接收裝置，再透過裝置將數值上傳至資料庫，使用者則可以透過應用程式隨時查看即時存量以及歷史存量紀錄。

Due to the development of hardware and wireless technology, as well as the popularity of wireless networks at home and the multiple of smart household appliances, we can use automatic and efficient way to complete things. All these modern inventions let our life become more convenient than the past.
This paper is based on Internet of Things, which propose a method to apply to the food inventory monitoring system in the refrigerator. In this system, it has the functions of inventory inspection, low inventory warning, purchase guidance and historical query. This paper uses a low-cost embedded development board STM32F103C8T6, uses load cell (WS-50KG-1KR) and analog-to-digital converter (HX711) as a weight sensor. We use a temperature sensor (DS18B20) to detect the ambient temperature and correct the weight value. Then Bluetooth module (HM-10) is used to transmit to the receiving device outside the refrigerator, and then upload the value to the database through the receiving device. User can view the real-time inventory and historical inventory records at any time through the application.

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