X-ray Fluorescence Sensor Calibration for Lubricant Monitoring

The patent replaces complex mechanical laboratory analysis equipment with an X-ray fluorescence sensor system that uses electromagnetic radiation (X-rays) to detect chemical elements in lubricating oil. The X-ray source excites atoms in the oil sample, and the detector measures the characteristic fluorescent X-rays emitted, enabling element identification and quantification without mechanical sample preparation or complex laboratory apparatus.

The patent introduces an X-ray transparent window as an intermediary component that allows X-rays to pass through while separating the measurement chamber from the external environment. This window enables the X-ray fluorescence measurement to be performed on lubricating oil in its natural state within the sensor housing, eliminating the need for complex sample handling and preparation equipment.

The patent implements self-service calibration by using the sensor housing itself as the calibration reference. The housing material (aluminum alloy) serves as an built-in reference standard that automatically provides calibration signals. The system performs self-calibration by comparing the intensity of X-rays absorbed or scattered by the housing material, eliminating the need for external calibration personnel and liquid standard samples.

The sensor housing serves multiple functions: it provides structural support, contains the lubricating oil sample, and simultaneously acts as the calibration reference standard. The aluminum alloy housing material's known atomic structure and X-ray interaction properties enable it to function as both a container and a calibration reference, reducing the need for separate calibration equipment and procedures.

The patent segments the monitoring function into a compact, self-contained sensor unit that can be installed directly at the wind turbine location. The sensor is divided into functional modules: X-ray source, measurement chamber with transparent window, detector, and housing. This segmentation enables the equipment to be transported as a single integrated unit rather than elaborate laboratory equipment, and allows automated operation without expert intervention.

The patent replaces mechanical laboratory analysis systems with an automated X-ray fluorescence sensor that requires no manual sample preparation, injection, or handling. The system automatically draws lubricating oil through the sensor housing, performs fluorescence measurement, and processes results electronically, eliminating the need for trained personnel to operate complex mechanical laboratory equipment at remote locations.