International Journal of Sensors and Sensor Networks

Volume 9, Issue 1, June 2021

  • A Magnetometer Calibration Method Using Single-Axis Motion Trajectory and Unscented Kalman Filter for Body Motion Capture Applications

    Farzan Farhangian, Saoussen Bilel, Faramarz Farhangian, Rene Jr. Landry

    Issue: Volume 9, Issue 1, June 2021
    Pages: 1-10
    Received: 18 December 2020
    Accepted: 25 December 2020
    Published: 12 January 2021
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    Abstract: Magnetometer calibration is a pre-processing step in the Attitude and Heading Reference Systems (AHRS) which has an essential role in many applications. The main purpose of this article is to derive an innovative and precise calibration approach for a magnetometer set installed on human body. To execute this calibration method, all the error parame... Show More
  • Computer Vision Syndrome and Its Predictors Among Secretary Employees Working in Jimma University, Southwest Ethiopia

    Mekonnin Tesfa, Mohammed Ibrahim, Yohannes Markos, Ashete Adere, Leyla Temam

    Issue: Volume 9, Issue 1, June 2021
    Pages: 11-18
    Received: 18 December 2020
    Accepted: 29 December 2020
    Published: 22 January 2021
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    Abstract: Background: Computer users are at high risk to experience eye discomfort and vision problems when viewing digital screens for extended periods. These problems are collectively termed Computer Vision Syndrome (CVS). Nearly more than 60 million people suffer from CVS globally with a million new cases occurring each year. The magnitude of CVS and its ... Show More
  • Design and Evaluation Method of Wireless Fire Detection Node Based on Multi-source Sensor Data Fusion

    Huang Ye, Wang Xiaogang, Gan Shuchuan

    Issue: Volume 9, Issue 1, June 2021
    Pages: 19-24
    Received: 17 January 2021
    Accepted: 25 January 2021
    Published: 30 January 2021
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    Abstract: In view of the problem that the traditional fire detection node is not intelligent enough for data processing when building fire occurs, a design and evaluation method of wireless fire detection node based on multi-source sensor data fusion is proposed. Firstly, the temperature and humidity sensor, carbon monoxide sensor and smoke sensor are select... Show More
  • Design and Construction of a Sensor Analytics System for the Monitoring of the Parameters of a Plastic Injection Mould

    Babalola Akinloluwa Samuel, Duncan Folley

    Issue: Volume 9, Issue 1, June 2021
    Pages: 25-29
    Received: 25 January 2021
    Accepted: 2 February 2021
    Published: 23 April 2021
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    Abstract: Values of parameters such as temperature, humidity, number of plastic products and the location of plastic injection moulds are required to determine the efficiency of plastic injection moulds with a view to improving the quality of the outputs. This article determined the appropriate sensors for the measurement of these essential parameters in the... Show More
  • People’s Fast Moving Detection Method in Buses Based on YOLOv5

    Zhang Xiaoping, Ji Jiahui, Wang Li, He Zhonghe, Liu Shida

    Issue: Volume 9, Issue 1, June 2021
    Pages: 30-37
    Received: 26 April 2021
    Accepted: 10 May 2021
    Published: 20 May 2021
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    Abstract: To ensure the public’s safety such as in buses, it is very important to accurately judge people’s behaviors and give early warnings. If by watching the video surveillance manually, the cost will be very high, and it cannot be effectively popularized, so video automatic monitoring is preferred. For buses, its environmental space is closed as well as... Show More
  • Guaranteed Cost Control Research for Networked Control System with Time-Varying Sampling Period

    Nana Wang, Nan Xie

    Issue: Volume 9, Issue 1, June 2021
    Pages: 38-44
    Received: 28 April 2021
    Accepted: 21 May 2021
    Published: 27 May 2021
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    Abstract: In practical industrial applications, the networked control system is often affected by external factors and internal components in operation, which leads to the fluctuation of some data transmitted by the system and reduces the system performance. Therefore, to ensure the normal operation of the system is the key, on this basis, we also need to ma... Show More
  • Power Regulation System and Charge-discharge Test Applied in Power Grid Based on the Flywheel Energy Storage Array

    Shusheng Li, Ping Liu

    Issue: Volume 9, Issue 1, June 2021
    Pages: 45-52
    Received: 14 June 2021
    Accepted: 24 June 2021
    Published: 29 June 2021
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    Abstract: Due to a larger intervention application of the wind-photovolatic new energy generation system, the stability and reliability of the main power grid will be greatly affected. One of the most effective methods to improve the quality of the power grid is to add the energy storage euipment. Based in this, according to the energy storage demand of shor... Show More