| With the rapid development and popularization of Internet of Things，smarthome has become a research hotspot. How to obtain and control the indoorenvironment parameters is a focus in the study of smart home. On the study ofdemand of the smart home, an intelligent monitoring system for indoorenvironment was designed and developed based on wireless sensor networkstechnology which can collect the indoor environment parameters and locateinterior equipment.First of all, the features of wireless sensor networks (WSN)are analyzed,the functional requirements of indoor environment monitoring system aredetermined, overall design of the system is put forward and selection and designof hardware platform and software platform are carried on. Aiming at therequirements of indoor equipments localization, RSSI localization algorithm isstudied and RSSI ranging model is analyzed in detail, after that RSSI values andRSSI localization algorithm in the distance measuring model are optimized toimprove the positioning accuracy. On this basis, according to the requirement ofdata acquisition and positioning, wireless sensor network nodes are programmedbased on software platform named MoteWorks, and the collection ofenvironmental parameters and the location data is realized; sensor network datareceive program was developed in the center of the data monitoring, but also amanagement system of data transmission environment parameters andpositioning data based on PostgreSQL database is developed, and the mobileterminal monitoring software on the Android platform is developed, so that theremote visualization management of indoor environment parameters can berealized.Finally, the indoor environment intelligent monitoring system was tested,and the test result show that the system can realize the real-time monitoring oftemperature、the positioning of the mobile personnel or equipment and thefunction of historical data query, etc, which can meet the requirement of data collection in smart home system. |
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