A home automation architecture based on LoRa technology and Message Queue Telemetry Transfer protocol

none5noIn recent years, Internet of Things technologies gained momentum in various application areas, including the Smart Home field. In this view, the smart objects available in the house can communicate with each other and with the outside world by adopting solutions already proposed for Internet of Things. In fact, among the challenges to face during the design and implementation of an Internet of Things–based Smart Home infrastructure, battery usage represents a key point for the realization of an efficient solution. In this context, the communication technology chosen plays a fundamental role, since transmission is generally the most energy demanding task, and Internet of Things communication technologies are designed to reduce as much as possible the power consumption. This article describes an Internet of Things-oriented architecture for the Smart Home, based on the long-range and low-power technology LoRa. Moreover, in order to enable the devices to communicate with each other and the outside world, the Message Queue Telemetry Transfer protocol is used as a domotic middleware. We show that LoRa, designed by having in mind the typical requirements of Internet of Things (i.e. low power consumption, sporadic transmission, and robustness to interference), is well-suited to also meet the need of more established home automation systems, specifically the low latency in message delivery. Interoperability among different devices may also be obtained through the Message Queue Telemetry Transfer midlleware.openEnnio Gambi, Laura Montanini, Danny Pigini, Gianluca Ciattaglia, Susanna SpinsanteGambi, Ennio; Montanini, Laura; Pigini, Danny; Ciattaglia, Gianluca; Spinsante, Susann

Розробка програмного комплексу для обліку товарів на складі

У тезах повідомляється про розробку програмного комплексу для автоматизації обліку товарів на складів, розглядається його структура та призначення. Висвітлюються окремі питання програмної реалізації програмного засобу, зокрема доступ та обробка даних через використання технології ADO та компонентів середовища програмування Delphi

Perancangan Aplikasi Web untuk Pemantauan dan Pengendalian Sistem Panel Surya Berbasis Long Range Wide Area Network (LoRaWAN)

Light or sunlight can be converted into electricity using solar panel technology. The measurement process is needed on current and voltage parameters to determine whether a solar panel is working correctly or not. The application of the Internet of Things (IoT) is a suitable method for monitoring efficiency measurements on solar panel performance in real-time by combining several computational components, protocols, and sensors to interact more quickly and help all activities become more efficient. One IoT technology that can work efficiently is the Long Range Wide Area Network (LoRaWAN). LoRa communicates using radio frequencies with a wide coverage range and has a low power consumption level. In this study, the implementation of LoRaWAN technology as a communication protocol between three series of nodes and one gateway in building a solar panel system is then visualized on a web that can monitor currents and voltages in the form of graphs and numbers. Displays notifications when there is a change in the condition of the large voltage from the solar panel can control the state of turning on or off the lights and turning off the whole node, and displaying a history of current and voltage readings. The functionality of the system will later be tested using black-box testing. There was also a distribution of questionnaires to 35 respondents to measure the level of agreement that the system designed was running well.

CoAP and MQTT Measurements over LoRaWAN

Abstract. Internet of Things (IoT) enables the system of interrelated computing devices such as sensors and actuators. Thus, IoT faces few challenges to execute predefined functionalities during device-to-device communication. Low latency, high bandwidth, privacy, security, reliability, resource and energy efficiency are key challenges in the IoT paradigm. The fundamental requirement includes uninterrupted secure and reliable services. The challenges become even more controversial for low powered IoT devices during information over the long-distance (measured in kilometer) especially when the bandwidth is subject to free of cost. Different network layer supports are required for present Internet of Things (IoT) solutions — from applications at a higher level to media-based support at a lower level. The interoperability of the fragmented IoT solutions are being enabled by various emerging integration platforms. However, Long-Range Wireless Area Network (LoRaWAN) is used to exchange small data packet in such long distance. On the other hand, IoT required suitable communication protocols for power critical IoT devices. Many studies show the possibility of using Message Queue Telemetry Transport (MQTT) and Constrained Application Protocol (CoAP) as two major enabling IoT communication protocols to act as middleware to obtain low power consumption, sporadic transmission, and robustness to interference. The main basis of the thesis work is to measure and analysis the performance of the MQTT protocol over LoRaWAN. To implement the analytical approach, MQTT and CoAP protocols are used as a transport vehicle or interoperability middleware on a full TCP/IP-stack to connect end devices, and data transmit over the LoRaWAN. This thesis performed the analytical performance for different Spreading Factors (SF) or Data Rates (DR) along with different payload sizes (the message length) over LoRaWAN by using MQTT and CoAP protocols. In LoRaWAN, the Receive_Delay1 and Receive_Delay2, the minimum time duration needed to establish an MQTT connection is one second for Receive_Delay1, while the maximum is two seconds for Receive_Delay2. The analysis shows for uplink and downlink time and proposes various important facts for future aspects