The core component of the infrared platform based on Fourier spectroscopy is the Michelson interferometer. In order to improve the stability, reliability and durability of the interferometer system, reduce the precision of processing and assembly, and reduce the system size, a double-angular cone Michelson interferometer with optically optimized physical autocollimation was used for interferometric spectroscopy, which ensured the good optical performance of the device. With the advancement of instrument technology, a large number of intelligent, networked and other high-tech technologies have been introduced into infrared analysis instrument technology, the technical level has been contin...