智能家居外文翻譯(編輯修改稿)
2025-07-26 02:27 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 is organized into four sections, including this introduction. Section II presents the architecture of the PIR sensorbased indoor locationaware system (PILAS), and the locationrecognition algorithm. Section III describes a residentdetection method using PIR sensors, and evaluates the performance of the system under various conditions using an experimental test bed. Finally, a summary and theconclusions are presented in Section IV.II. ARCHITECTURE OF THE PIR SENSORBASED INDOORLOCATIONAWARE SYSTEMA. Framework of the smart homeGiven the indoor environment of the smart home, an indoor locationaware system must satisfy the following requirements. First, the locationaware system should be implemented at arelatively low cost because many sensors have to be installed in rooms of different sizes to detect the resident in the smart home. Second, sensor installation must be flexible because the shape of each room is different and there are obstacles such as home appliances and furniture, which prevent the normal operation of sensors. The third requirement is that the sensors for the locationaware system have to be robust to noise, and should not be affected by their surroundings. This is because the smart home can make use of various wireless munication methods such as wireless LAN or radiofrequency (RF) systems, which produce electromagnetic noise, or there may be significant changes in light or temperature that can affect sensor performance. Finally, it is desirable that the system’s accuracy is adjustable according to room types.Among many systems that satisfy the requirement, the PIR sensorbased system has not attracted much attention even though the system has several advantages. The PIR sensors,which have been used to turn on a light when it detects human movement, are less expensive than many other sensors. In addition, because PIR sensors detect the infrared wavelengthemitted from humans between ~ μm, they are reasonably robust to their surroundings, in terms of temperature, humidity, and electromagnetic noise. Moreover, it ispossible to control the location accuracy of the system by adjusting the sensing radius of a PIR sensor, and PIR sensors are easily installed on the ceiling, where they are not affected by the structure of a room or any obstacles. Figure 2 shows the framework for the PILAS in a smart home that offers locationbased intelligent services to a resident. Within this framework, v
環(huán)評(píng)公示相關(guān)推薦
鄂ICP備17016276號(hào)-1