Abstract

With the rapid development of technology and application for Internet of Things (IoT), Low-Power Wireless Personal Area Network (LoWPAN) devices are more popularly applied. Evaluation of power efficiency is important to LoWPAN applications. Conventional method to evaluate the power efficiency of different LoWPAN devices is as follows: first measure the current of the devices under working/idle/sleep state and then make an average and estimation of the lifetime of batteries, which deeply relied on the accuracy of testing equipment and is not that accurate and with high cost. In this work, a low-cost, real-time power measurement platform called PTone is proposed, which can be used to detect the real-time power of LoWPAN devices (above 99.63%) and be able to determine the state of each module of DUT system. Based on the PTone, a novel abnormal status diagnosis mechanism is proposed. The mechanism can not only judge abnormal status but also find accurate abnormal status locating and classify abnormal status accurately. According to the method, each state of Device Under Test (DUT) during wireless transmission is estimated, different abnormal status can be classified, and thus specific location of abnormal module can be found, which will significantly shorten the development process for LoWPAN devices and thus reduce costs.

Highlights

  • The rapid development of information technology, for example, 3G/4G mobile communication technology and the Internet of Things (IoT), have largely changed our everyday lives

  • We propose a power measurement platform called PTone which can be used to detect the real-time power of Low-Power Wireless Personal Area Network (LoWPAN) devices and be able to determine the state of each module of Device Under Test (DUT) system which is meaningful to the R&D on LoWPAN devices/applications

  • In order to achieve wide dynamic range of gain, wide bandwidth, and low noise and high linearity and digitize a wide range of signals, it is necessary to set the value of reference voltage and input gain of Programmable-gain instrumentation amplifier (PGA) and output data rate of Analog-to-digital converter circuit (ADC) to reasonable values by system control module represented by Microcontroller unit (MCU) in the figure

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Summary

A Novel Low-Cost Real-Time Power Measurement Platform for LoWPAN IoT Devices

Conventional method to evaluate the power efficiency of different LoWPAN devices is as follows: first measure the current of the devices under working/idle/sleep state and make an average and estimation of the lifetime of batteries, which deeply relied on the accuracy of testing equipment and is not that accurate and with high cost. A low-cost, real-time power measurement platform called PTone is proposed, which can be used to detect the real-time power of LoWPAN devices (above 99.63%) and be able to determine the state of each module of DUT system. Each state of Device Under Test (DUT) during wireless transmission is estimated, different abnormal status can be classified, and specific location of abnormal module can be found, which will significantly shorten the development process for LoWPAN devices and reduce costs

Introduction
System Description
Hardware Implementation
A PGAIDUTin
Status Detection and Classification
Findings
Conclusions
Full Text
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