Vampire: A Smart Energy Meter for Synchronous Monitoring in a Distributed Computer System

This paper presents the design and implementation of a low-cost system oriented to the synchronised and real-time surveillance and monitoring of electrical parameters of different computer devices. To measure energy consumption in a computer system, it is proposed to use, instead of a general-purpose wattmeter, one designed ad-hoc and synchronously collects the energy consumption of its various nodes or devices. The implementation of the devised system is based on the confluence of several technologies or tools widely used in the Internet of Things. Thus, this article the intelligent objects are the power meters, whose connections are based on the low-cost ESP32 microcontroller. The message transmission between devices is carried out with the standard message queuing telemetry transport (MQTT) protocol, the measurements are grouped in a database on an InfluxDB server that store the sensor data as time series, and Grafana is used as a graphical user interface. The efficiency of the proposed energy monitoring system is demonstrated by the experimental results of a real application that successfully and synchronously records the voltage, current, active power and cumulative energy consumption of a distributed cluster that includes a total of 60 cores.Spanish Ministry of Science, Innovation, and Universities under grants PGC2018–098813-B-C31 and PID2022–137461NB-C31ERDF fun

Shifting the maturity needle of ICT for Sustainability

The ubiquity of ICT means the potential of ICT4S covers a broad range of sustainability topics and application domains. However, ICT4S research can be ill positioned with regard to the complexity of transforming society in such a way that people and environmental ecologies can coexist in a sustainable system. The danger is that ICT4S becomes partitioned into a small subset of sustainability and using a limited set of the levers at our disposal. Grounded in the Mann-Bates maturity scale for sustainability this paper performs an analysis of the ICT4S conference corpus to measure how mature the research is in our field with regard to sustainability. Based on this analysis we identify areas in which the ICT4S community can begin to shift the maturity of research in order to promote sustainable futures. By applying the Transformation Mindset our article demonstrates through a series of illustrative how ICT4S can apply this mindset to shift ICT4S research towards more sustainable trajectories. This is an essential first step in taking stock, highlighting shortcomings and identifying opportunities in ICT for sustainability