A Reconfigurable Smart Sensor Interface for Industrial WSN in IoT Environment

TLDR

Industrial WSN sensor interfaces are essential but limited by device connectivity, sampling rate, and signal types, and require complex programming, while IEEE1451.2 specifies a framework for intelligent acquisition. The paper proposes a reconfigurable smart sensor interface for industrial WSN in IoT that uses a CPLD core controller to address these limitations. The design adopts IEEE1451.2 specifications and integrates the latest CPLD programmable technology to enable parallel, real‑time, high‑speed data reading from multiple sensor types. The system achieves parallel, real‑time, high‑speed data acquisition, offers a new solution to traditional sensor data acquisition, and demonstrates effective performance in practical IoT water‑environment monitoring.

Abstract

A sensor interface device is essential for sensor data collection of industrial wireless sensor networks (WSN) in IoT environments. However, the current connect number, sampling rate, and signal types of sensors are generally restricted by the device. Meanwhile, in the Internet of Things (IoT) environment, each sensor connected to the device is required to write complicated and cumbersome data collection program code. In this paper, to solve these problems, a new method is proposed to design a reconfigurable smart sensor interface for industrial WSN in IoT environment, in which complex programmable logic device (CPLD) is adopted as the core controller. Thus, it can read data in parallel and in real time with high speed on multiple different sensor data. The standard of IEEE1451.2 intelligent sensor interface specification is adopted for this design. It comprehensively stipulates the smart sensor hardware and software design framework and relevant interface protocol to realize the intelligent acquisition for common sensors. A new solution is provided for the traditional sensor data acquisitions. The device is combined with the newest CPLD programmable technology and the standard of IEEE1451.2 intelligent sensor specification. Performance of the proposed system is verified and good effects are achieved in practical application of IoT to water environment monitoring.