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Temperature and Humidity Calibration of a Low-Cost Wireless Dust Sensor for Real-Time Monitoring

机译：用于实时监测的低成本无线灰尘传感器的温度和湿度校准

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This paper introduces the design, calibration, and validation of a low-cost portable sensor for the real-time measurement of dust particles within the environment. The proposed design consists of low hardware cost and calibration based on temperature and humidity sensing to achieve accurate processing of airborne dust density. Using commercial particulate matter sensors, a highly accurate air quality monitoring sensor was designed and calibrated using real world variations in humidity and temperature for indoor and outdoor applications. Furthermore, to provide a low-cost secure solution for real-time data transfer and monitoring, an onboard Bluetooth module with AES data encryption protocol was implemented. The wireless sensor was tested against a Dylos DC1100 Pro Air Quality Monitor, as well as an Alphasense OPC-N2 optical air quality monitoring sensor for accuracy. The sensor was also tested for reliability by comparing the sensor to an exact copy of itself under indoor and outdoor conditions. It was found that accurate measurements under real-world humid and temperature varying and dynamically changing conditions were achievable using the proposed sensor when compared to the commercially available sensors. In addition to accurate and reliable sensing, this sensor was designed to be wearable and perform real-time data collection and transmission, making it easy to collect and analyze data for air quality monitoring and real-time feedback in remote health monitoring applications. Thus, the proposed device achieves high quality measurements at lower-cost solutions than commercially available wireless sensors for air quality.
机译：本文介绍了一种用于实时测量环境中灰尘颗粒的低成本便携式传感器的设计，校准和验证。提议的设计包括低硬件成本和基于温度和湿度感应的校准，以实现对机载灰尘密度的精确处理。使用商业颗粒物传感器，针对室内和室外应用使用湿度和温度的实际变化设计和校准了高精度空气质量监测传感器。此外，为了提供一种用于实时数据传输和监视的低成本安全解决方案，已实现了带有AES数据加密协议的板载蓝牙模块。该无线传感器经过Dylos DC1100 Pro空气质量监测器和Alphasense OPC-N2光学空气质量监测传感器的准确性测试。通过在室内和室外条件下将传感器与其自身的精确副本进行比较，还对传感器进行了可靠性测试。已经发现，与市售传感器相比，使用所提出的传感器可以在现实的湿度和温度变化以及动态变化的条件下实现准确的测量。除了精确可靠的传感之外，该传感器还具有可穿戴性，并可以进行实时数据收集和传输，从而可以轻松收集和分析数据，以进行空气质量监测和远程健康监测应用中的实时反馈。因此，与用于空气质量的市售无线传感器相比，所提出的设备以低成本解决方案实现了高质量的测量。

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