Abstract: The coal transporting trestle is inevitably prone to tilting under its own load and external environmental influences. To address the inefficiencies, high costs, and poor real-time performance of traditional coal conveying gantry monitoring methods, a lightweight wireless inclination real-time measurement system is designed based on the principle of inclination measurement using MEMS three-axis gravity acceleration sensors. By integrating radio frequency (RF) technology and 4G CAT.1 technology, the system achieves on-site short-range wireless data acquisition and remote wireless transmission, featuring characteristics such as lightweight, low power consumption, high precision, and quick installation. Experimental tests demonstrate the stability and reliability of this measurement system, with an inclination measurement accuracy of up to 0.002° in static environments. Combined with internet of things (IoT) cloud platforms, this system can monitor the tilting attitude of the coal transporting trestle in (near) real-time. Application results indicate that the wireless inclination measurement system achieves an accuracy of 0.01° by effectively removing environmental noise generated by belt vibration through filtering regression algorithms. It promptly issues warning messages when the cumulative tilt exceeds 0.18°, ensuring the stable operation of the coal transporting trestle.

Key words: inclination monitoring, coal transporting trestle, wireless inclinometer, real time online monitoring