Mosquitto: server and client implementation of the MQTT protocol

Light, Roger

doi:10.21105/joss.00265

Cited by 343 publications

(134 citation statements)

References 6 publications

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“…Messages may contain data from the sensors, data for controllers driving the actuators, or any other data. There are various MQTT implementations like open source Mosquitto [45], in the form of libraries for programming languages (MQTT.js [46] client for Node.js and the browser) and IDEs (Arduino IDE [47]), thus providing a range of choices for IoT projects. IoT cloud platforms like Cayenne offer support for MQTT.…”

Section: Mqtt Protocolmentioning

confidence: 99%

Pocket Labs Supported IoT Teaching

Cvjetkovic

2018

Int. J. Eng. Ped.

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Abstract-IoT is both a concept and a specific platform with large variety of applications that rapidly become inseparable part of everyday life not only improving it, but making it more interesting and fun. ICT based, it is devoted to interactions with environment that are usually not available with traditional ICT equipment and platforms. IoT is at the same time both complementary and compatible with existing non IoT world, which offers computing power and resources to IoT, making it a unique and powerful combination. Pocket Lab is a relatively new teaching concept that supports students' creativity and initiative allowing for carrying of and experimenting with real equipment at a time and place of choice, much like using of regular text books for studying. Although the IoT & Pocket Labs are not necessarily interconnected or mutually conditioned, this paper discusses such a real case of teaching practice, where the Pocket Labs are used for teaching of IoT. The paper deals with teaching experience of IoT as a university course. Obtained results and experience may be quite general except for university students profile defined with their previous education and knowledge. Besides the main goal of the course which is an introduction to IoT, some other aims were exploring the students' motivation for studying of IoT as a new technology and emphasizing the importance of new original ideas and views being as important as mastering the IoT technologies.

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Section: Mqtt Protocolmentioning

confidence: 99%

Pocket Labs Supported IoT Teaching

Cvjetkovic

2018

Int. J. Eng. Ped.

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“…We incorporated an ESP8266, which is a System-on-a-Chip (SOC) WiFi module with integrated TCP/IP protocol stack capable of giving any microcontroller access to the WiFi network, on the Limpet. We use Mosquitto [39], which implements a messaging protocol known as Message Queuing Telemetry Transport (MQTT), to send the data wirelessly from the Limpet to the PC. MQTT is a light-weight publish/subscribe messaging protocol used for remote communication.…”

Section: System Designmentioning

confidence: 99%

The Limpet: A ROS-Enabled Multi-Sensing Platform for the ORCA Hub

Sayed

Nemitz

Aracri

et al. 2018

Preprint

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Abstract:The oil and gas industry faces increasing pressure to remove people from dangerous offshore environments. Robots present a cost-effective and safe method for inspection, repair and maintenance of topside and marine offshore infrastructure. In this work, we introduce a new immobile multi-sensing robot, the Limpet, which is designed to be low-cost and highly manufacturable, and thus can be deployed in huge collectives for monitoring offshore platforms. The Limpet can be considered an instrument, where in abstract terms, an instrument is a device that transforms a physical variable of interest (measurand) into a form that is suitable for recording (measurement). The Limpet is designed to be part of the ORCA (Offshore Robotics for Certification of Assets) Hub System, which consists of the offshore assets and all the robots (UAVs, drones, mobile legged robots etc.) interacting with them. The Limpet comprises the sensing aspect of the ORCA Hub System. We integrated the Limpet with Robot Operating System (ROS), which allows it to interact with other robots in the ORCA Hub System. In this work, we demonstrate how the Limpet can be used to achieve real-time condition monitoring for offshore structures, by combining remote sensing with signal processing techniques. We show an example of this approach for monitoring offshore wind turbines. We demonstrate the use of four different communication systems (WiFi, serial, LoRa and optical communication) for the condition monitoring process. By processing the sensor data on-board, we reduce the information density of our transmissions, which allows us to substitute short-range high-bandwidth communication systems with low-bandwidth long-range communication systems. We train our classifier offline and transfer its parameters to the Limpet for online classification, where it makes an autonomous decision based on the condition of the monitored structure.

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“…Arduino-based radiation monitoring device collects environmental gamma dose rate and publishes it directly to MQTT broker in JSON format. In this prototype, mosquito [12] is used as the MQTT broker. Next, weather station is connected to the system through a personal computer.…”

Section: Figurementioning

confidence: 99%

Development of IoT based meteorological and environmental gamma radiation monitoring system

Susila

Istofa

Kusuma

et al. 2018

AIP Conference Proceedings

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Material selection for shell and tube heat exchanger using computational fluid dynamics method AIP Conference Proceedings 1977, 060005 (2018) (IoT) is an interconnection of various devices for collecting and exchanging data over network. Application of IoT includes many domains such as environmental monitoring, smart home, smart energy monitoring, healthcare, agriculture and smart transportation. In this paper, we propose a design of meteorological monitoring and environmental gamma radiation monitoring system for early detection of radioactive material in the environment. The study consists of system architecture, development of Arduino-based gamma radiation monitoring device, data transfer with MQTT protocol, storage of monitoring data to database, and development of user interface (UI) for data presentation. The prototype of the system has been developed and tested around the Center for Nuclear Facilities Engineering at Serpong Nuclear Complex. The presence of radioactive material was simulated using check source which emitted low dose rate gamma. The results were analyzed and presented, while meteorological data was compared with the monitoring result from the existing meteorological monitoring system. The results showed that the proposed system is able to detect the presence of gamma radiation source and meet the design requirement.

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Mosquitto: server and client implementation of the MQTT protocol

Cited by 343 publications

References 6 publications

Pocket Labs Supported IoT Teaching

Pocket Labs Supported IoT Teaching

The Limpet: A ROS-Enabled Multi-Sensing Platform for the ORCA Hub

Development of IoT based meteorological and environmental gamma radiation monitoring system

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