由於近年感測技術及無線技術的長足進步，物聯網(Internet-of-Things, IoT)相關的技術與應用也隨之蓬勃的發展，其被應用在醫療、保全、物流、建築，工業自動化…等不同的領域中。應用的領域之廣泛、裝置種類之多元、裝置數量規模之廣大，都是目前物聯網面臨的挑戰，也是本研究欲解決的課題。

在面臨裝置多元、數量龐大的挑戰下，對於物聯網系統的建構而言，其主要的問題是開發、維護及系統規模擴展。本研究的目的，在於提供一個架構，來達到高效率且具有彈性的開發與維護，同時維持一致性，去適應大量且種類眾多的裝置。這個架構，包含一個物聯網裝置的基礎類別，和一個可被描述語言描述的代理伺服器。遵循這個物聯網裝置的基礎類別，可以維持所有裝置開發的一致性及延伸性。同時，透過這個可描述化的代理伺服器，整個物聯網行為可以被描述語言所設定。

採用描述語言的優點在於語法簡單、跨平台移植容易、便於結合其它應用程式開發，以及易於維護，這也是絕大多數作業系統皆以描述語言來執行系統初始化設定的原因。除此之外，代理伺服器也提供一個Event-Driven Script的機制，使主機可將裝置託管給代理伺服器，且完全不佔用主機資源及主機和代理伺服器間通訊的頻寬。整個系統的反應時間也更為即時。物聯網的應用可藉由此機制擴大整個規模。

然而，描述語言的缺點在於直譯造成的效能落差。透過本研究可得知，相對於最有效率的C語言，犧牲僅約3%的存取時間及多佔用13%的處理器負載，但得到了描述語言所帶來的優點及彈性，為物聯網系統開發及維護增添效益。

Owing to recent advances in sensing and wireless technology, the IoT (Internet-of-Things) has been exploited in various fields, including medical, security, logistics, home automation, industrial automation and others. Like the fields of applications, the related devices are diverse and the number of devices become huge, various. System scale and the number of device become huge, the construction of the IoT becomes increasingly challenging.

To meet the challenges of the very large number of diverse devices, the construction of any IoT system must consider the efficiency of development, maintenance, and scaling. This work proposes a script framework, which comprises the IoT fundamental class, and a scriptable agent. Based on the fundamental class, the development of devices must be consistent. A scriptable agent enables IoT to be configured by scripts.

The advantages of script language are the simplicity of the syntax, cross-platform portability, ease of integration with other applications, and the efficiency of development and maintenance. Therefore, scripts are usually used to initialize most operating systems. This proposed script framework offers an event-driven script mechanism for delegating the script to the agent with the specified device’s reporting event to manage the devices on agent. With the event-driven script mechanism, the host takes no resource and no communication traffic passes between the host and the agent. The response time is shorter than when the response is controlled by the host directly. Hence, the scale of IoT can be increased using the agent and the event-driven script mechanism.
The disadvantage of a script language is its weak performance that is caused by the interpreter in the run-time. This study estimates that the agent access time when as script language is used is 3% greater than when the code is programmed in C language and the CPU loading is 13% higher. However, the flexibility and scalability of script language is gained for this small increase in overhead.

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