Using Publish/Subscribe for Short-lived IoT Data

Johnsen, Frank T.

doi:10.15439/2018f232

Cited by 12 publications

(4 citation statements)

References 5 publications

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“…From the technological side, the functioning of smart cities requires the use of various types of sensors, providing data in real time [18]. The key features of such devices include having a small size and low energy consumption [19].…”

Section: Air Pollution Sensorsmentioning

confidence: 99%

Hardware Efficient Solutions for Wireless Air Pollution Sensors Dedicated to Dense Urban Areas

et al. 2020

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This paper proposes novel solutions for the application of air pollution monitoring systems in so called 'smart cities'. A possibility of the implementation of a relatively dense network of wireless air pollution sensors that can collect and process data in real time was the motive behind our research and investigations. We discuss the concept of the wireless sensor network, taking into account the structure of the urban development in cities and we present a novel signal processing algorithm that may be used to control the communication scheme between particular sensors and an external network. We placed a special emphasis on the computational complexity to facilitate the implementation directly at the transistor level of particular sensors. The algorithm was verified using real data obtained from air pollution sensors installed in Krakow, Poland. To ensure sufficient robustness of the variability of input data, we artificially added high amplitude noise to the real data we obtained. This paper demonstrates the performance of the algorithm. This algorithm allows for the reduction of the noise amplitude by 23 dB and enables a reduction of the number of wireless communication sessions with a base station (BS) by 70%-80%. We also present selected measurement results of a prototype current-mode digital-to-analogue converter to be used in the sensors, for signal resolutions up to 7 bits.

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Section: Air Pollution Sensorsmentioning

confidence: 99%

Hardware Efficient Solutions for Wireless Air Pollution Sensors Dedicated to Dense Urban Areas

et al. 2020

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“…New technologies in the area of the information and communication technologies (ICT) are crucial for the development of the future pollution monitoring systems. The ability to collect data from a large number of locations and transferring them to a central station in real time is the key feature here …”

Section: State‐of‐the Art Studymentioning

confidence: 99%

“…The ability to collect data from a large number of locations and transferring them to a central station in real time is the key feature here. 17 Development of energy-efficient WSNs calls for novel solutions from such areas as microelectronics (hardware layer of the overall network), IT (control and data processing), and telecommunications (data exchange). Networks of this type are currently intensively developed around the world.…”

Section: Wireless Sensor Network In Smart Citiesmentioning

confidence: 99%

New technologies for smart cities – high‐resolution air pollution maps based on intelligent sensors

Banach

Talaśka

Dalecki

et al. 2019

Concurrency and Computation

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Summary This paper presents a contribution in the development of a wireless sensor network, which can be used for building, in real time, dense air pollution maps, for compact urban areas. Such system may be useful for cyclists and pedestrians moving through the city. Based on such data, they can select the route in such a way, as to avoid the most polluted areas. An important step here may be development of miniaturized and cheap intelligent sensors, capable not only of data recording and transmitting, but also of some on‐site data processing and prediction. Such sensors require a development of small and power efficient circuit, including data processing unit integrated with an artificial neural network (ANN) in a single chip. We present a prototype chip that contains main components of such sensors, which include a programmable 10‐bit analog‐to‐digital converter, a programmable clock generator, and selected blocks of the ANN. The chip is a reconfigurable device, with many testing abilities. For this reason, one of the main challenges was a fast and efficient programming and testing tool. Such tool has been developed by us and is described in this work in detail along with selected measurement results. The presented work is an extended version of our conference paper (“Novel solutions for smart cities—creating air pollution maps based on intelligent sensors”).

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“…Segundo Kale [2014], um servidor de mensagens é um Middleware Orientado a Mensagem que funciona como uma infraestrutura do tipo cliente/servidor responsável por intermediar a comunicação entre aplicações. Os consumidores realizam subscrições no servidor de mensagem indicando o seu interesse em um determinado tópico e tão logo um produtor publique alguma mensagem no respectivo tópico, o servidor de mensagens envia uma notificação para um ou mais consumidores interessados, com o conteúdo da mensagem publicada [Coulouris et al 2011;Johnsen 2018;Magnoni 2014]. Dessa forma, clientes heterogêneos (produtores e consumidores) interagem indiretamente através de mensagens assíncronas de notificação de eventos transmitidas por um protocolo de comunicação.…”

Section: Introductionunclassified

Análise de desempenho de protocolos para computação em névoa

Moreno

Pigatto

Sant'Ana

et al. 2023

Anais Do XIV Computer on the Beach - COTB'23

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The rise in popularity of mobile devices has been made possibledue to advances in processing power and the miniaturization ofmodern processors. Mobile devices are often embedded systemswith limited resources such as battery, processing power, and memory,which impact the user experience. These devices located atthe edge of the network can also generate large amounts of data,which makes it difficult to centralize the data in the cloud. To addressthe scalability issues, fog computing is used to intermediatestorage and communication services between cloud computing andend devices, allowing for decentralized and scalable data. In fogcomputing, a message server may be used to distribute informationthrough one or more communication channels, reducing computationalresources. To transmit messages, it is necessary to choosea communication protocol, and it is important to consider the limitationsof mobile devices when analyzing the behavior of fogcommunication protocols. This paper evaluates the performanceof three fog computing protocols: MQTT, AMQP, and STOMP. Resultsindicate that MQTT achieves the best performance in termsof power and processing consumption, AMQP has lower memoryusage, and STOMP has a shorter round trip time for each message.

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Using Publish/Subscribe for Short-lived IoT Data

Cited by 12 publications

References 5 publications

Hardware Efficient Solutions for Wireless Air Pollution Sensors Dedicated to Dense Urban Areas

Hardware Efficient Solutions for Wireless Air Pollution Sensors Dedicated to Dense Urban Areas

New technologies for smart cities – high‐resolution air pollution maps based on intelligent sensors

Análise de desempenho de protocolos para computação em névoa

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