A Data logger for educational purposes of a laboratory chemical reactor: an IoT approach
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This paper presents the development of an acquisition
system and data logger from an existing set of three continuous
stirred-tank reactors in series. The reactors are currently
used in chemical engineering educational laboratories to perform
kinetic and tracer experiments. In this sense, to accomplish the
store data process, the volumetric flow rate and the concentration
of tracer, reactants and/or products of the reaction must be
acquired as a function of time. In the original experimental setup,
only the signal conditioning system was operational, while
the acquisition, visualization, and control systems were obsolete
and damaged. Thus, a new system composed of an interface
and real-time acquisition data is proposed alongside preserving
the main reactor structure. A graphical user interface and the
automation of the various actuators were developed based on
worldwide usage and low cost, respectively. This system, based
on a common 8-bit microcontroller and an application developed
in Lazarus, allows the storage of the acquired data in a timeseries
database. In this way, students can analyze the results later
or in real time. Moreover, remote access allows controlling the
reactor and getting data by the Internet of Things (IoT) resources.
Additionally, the proposed system using IoT allows data to be
shared with the community as a dataset.
