As one of the most basic and most critical devices in the perception layer of the ubiquitous power Internet of Things, smart energy meters require high reliability, low cost, and low power consumption, as well as certain functional expansion capabilities. This article mainly focuses on the smart energy meter integrating the metering and billing functions with variable tariffs and flexible and expandable electricity price packages, and analyzes the requirements for MCU instruction set, kernel structure, and SOC peripherals of this type of smart energy meter when working with a lightweight microkernel real-time operating system. And put forward the key design of the main frequency and large-capacity storage, which can meet the basic functions of the smart energy meter, while meeting the needs of flexible and expandable functions.
In Urumqi, China, the occupancy rate of hotels during the low season is quite different from that of high season. This phenomenon can result in wasting energy. However, most energy saving design standards don't take seasonal use characteristics of buildings into consideration. This paper focused on the energy saving design based on seasonal use patterns for big hotels in Urumqi. Combining time-variation characteristics with the unique climate this study explored a different approach to energy management. Design strategies for big hotels in the Urumqi region were developed according to use patterns and climatic conditions, considering thermal, wind and luminous factors. This study provides design ideas for big hotels in temperate continental climate areas based on this alternative approach.
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