INFRARED SPECTROSCOPY-BASED ONLINE MONITORING SYSTEM FOR MICROBUBBLE CONCENTRATION
Keywords:
Microbubble concentration, Infrared spectroscopy, Cloud monitoring, Online monitoringAbstract
To address the urgent need for the real-time and precise monitoring of microbubble concentrations in industrial fluids, an online monitoring system for microbubbles was developed based on the principles of infrared spectroscopy sensing and light intensity attenuation, featuring an architecture that integrates array-based infrared photoelectric sensing with cloud collaboration. A 'three-emitter, three-receiver' array-based infrared detection scheme is adopted to effectively mitigate the issue of poor sample representativeness associated with single-optical-path detection in complex fluid phases. Centered around a Raspberry Pi as the primary controller, the system incorporates precise photoelectric signal conditioning circuitry, high-resolution analog-to-digital conversion modules, and industrial communication links. A dual-channel data communication architecture based on the RS485 bus and the MQTT IoT protocol was established. Testing demonstrates that the system exhibits high real-time performance, strong anti-interference capability, and excellent digital management features, enabling both on-site real-time monitoring of microbubble concentrations and remote visualization via a cloud dashboard.References
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