Quantum dot fluorescence temperature sensing system

The utility model relates to a quantum dot fluorescence temperature sensing system, which comprises a laser light source, a Y-shaped optical fiber, a quantum dot fluorescence temperature sensor, a USB (Universal Serial Bus) optical fiber spectrometer and a PC (Personal Computer) terminal, the laser light source and the USB optical fiber spectrometer are respectively connected with two receiving ends of the Y-shaped optical fiber, the quantum dot fluorescence temperature sensor is connected with a transmitting end of the Y-shaped optical fiber, and the USB optical fiber spectrometer is connected with the PC terminal through a USB data line; the quantum dot fluorescence temperature sensor comprises a copper shell, an optical fiber interface, a convex lens, a collimating lens, a condensation cup, a quantum dot film and a base. The quantum dot film is coated on the glass sheet adhered to the cylindrical bottom surface of the base, the quantum dot film is placed at the focus end of the light-gathering cup, the col