1. Innovative full-spectrum receiver device, achieving spectral line analysis across the full range of 140nm-750nm; 2. Independent spectral acquisition and processing module, high-performance ARM processor, real-time operating system, and optimized data processing algorithms. The innovative DF-VII type full-spectrum receiver device can achieve spectral line analysis from 140-750nm. It is capable of detecting various matrices such as iron, copper, aluminum, and more, with an elemental analysis range covering F-U and a concentration range from ppm to 100%.