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\title{PSPIOT - 01/2025}
\author{PSP GmbH\\Am Hügel 4, A-9560 Feldkirchen}
\date{}

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\maketitle

\section{Introduction}

The PSPIOT, designed and manufactured by \textbf{PSP GmbH}, is an advanced monitoring and control device capable of interfacing with various sensors and external systems. Its compact and robust design makes it ideal for both industrial and outdoor environments where precise measurements and control actions are critical. The PSPIOT is optimized for power efficiency and supports both PV input and battery power supply, providing reliable operation in challenging conditions.

\begin{figure}[h!]
    \centering
    \includegraphics[width=0.7\textwidth, angle=90]{../IMG-20240819-WA0000.jpg}
    \caption{PSPIOT Device}
    \label{fig:pspiot}
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\section{Key Features}

The PSPIOT offers a variety of features that make it an optimal choice for diverse industrial applications:

\begin{itemize}
		\item \textbf{Dimensions}: $L/W/H = 175/111/37\,\mbox{mm}$.
    \item \textbf{Version 2.03}: The latest iteration of the PSPIOT, providing enhanced performance and reliability.
    \item \textbf{PV Input}: Supports a 20-40V input range to facilitate solar panel connections.
    \item \textbf{Battery Support}: Compatible with 2xNL1835LTHP batteries for offgrid operation.
    \item \textbf{Rugged Design}: Encased in a durable housing, the PSPIOT offers easy access to critical connections like DMS1, DMS2, DMS3, DMS4, PT, BUS, LDS, and PV.
\end{itemize}

\section{On-board Sensor}

A key feature of the PSPIOT is its integrated \textbf{3D Inclination and Acceleration Sensor}, utilizing the \textbf{Murata SCL3300-D01}. This sensor provides high-precision inclination and acceleration measurements in three dimensions, making the PSPIOT ideal for applications requiring accurate positioning and motion detection. Key benefits of the sensor include:

\begin{itemize}
    \item \textbf{High Accuracy}: The SCL3300-D01 delivers exceptional accuracy and stability, ensuring reliable performance in both static and dynamic conditions.
    \item \textbf{Wide Measurement Range}: Capable of measuring inclination and acceleration across a broad range, making it suitable for structural fatigue assessment, machine control, and more.
    \item \textbf{Offset/Bias Calibration}: The PSPIOT must be zerod at system-level after installation to correct offset and bias of on-board sensors.
\end{itemize}

\section{Directly Connectable Sensors}

The PSPIOT supports the direct connection of various sensors, enhancing its versatility in monitoring applications:

\begin{itemize}
    \item \textbf{Strain Gauges}: The device supports up to four strain gauges via a 24-bit analog-to-digital converter, allowing for a sampling rate of 1000 Hz per channel.
    \item \textbf{Range Finder (TR-EVO-60M)}: The \texttt{TR-EVO-60M} from TeraBee offers object detection capabilities between 10m and 60m, with a sampling rate of 200 Hz, making it ideal for distance monitoring applications.
\end{itemize}

\section{Modbus Interface}

The PSPIOT supports up to eight nodes on the \texttt{BUS} connector, enabling the integration of multiple sensors and devices for various purposes:

\begin{itemize}
    \item \textbf{PSM (Bearing Movements)}: Measures movements between 20mm and 150mm using a magnetic Hall sensor.
    \item \textbf{PSD (Position Measurement)}: Utilizes a combination of a laser pointer and a position-sensitive device (PSD) to measure bridge curvature, defined as $\kappa = \frac{M}{E \cdot J}$.
    \item \textbf{MPS (Additional Rotation Measurement)}: Allows for the measurement of further rotations to obtain a beam’s bending curve, supplementing the on-board inclination sensor.
    \item \textbf{AMB (Environmental Monitoring)}: A special node featuring humidity, light, and multiple temperature sensors to monitor ambient conditions.
    \item \textbf{LDS (Laser Distance Sensor)}: The SEN0366 provides accurate measurements up to 20 Hz with a precision of $\pm 1\,\text{mm}$.
    \item \textbf{Other Sensors}: Integration of third-party sensors as Modbus nodes is supported, with mandatory power supply of $5\,\text{V}$.
\end{itemize}

\section{Operation Modes}

The PSPIOT supports three distinct operation modes:

\begin{itemize}
    \item \textbf{Static Mode}: Ideal for applications requiring intermittent measurements.
    \item \textbf{Streaming Mode}: Continuously transmits data at regular intervals.
    \item \textbf{Triggering Mode}: Data transmission is initiated by specific events or thresholds.
\end{itemize}

Data can be transmitted via the integrated GSM module to an MQTT broker, ensuring seamless remote monitoring and control.

\section{Applications}

The PSPIOT is ideal for a wide range of industries and applications:

\begin{itemize}
    \item \textbf{Industrial Automation}
    \item \textbf{Structural Health Monitoring}
    \item \textbf{Renewable Energy Systems}
    \item \textbf{Remote Monitoring and Control}
\end{itemize}

\section{Conclusion}

With its integrated 3D inclination and acceleration sensor, robust design, and versatile power options, the PSPIOT is a highly capable device suited for a wide range of monitoring and control applications. Whether you need precise motion detection or reliable remote control, the PSPIOT is engineered to meet the demands of modern industrial environments.

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