Colorimetric system based on LED (light-emitting diode) lamp multi-light-path switching

The utility model discloses a colorimetric system based on LED (light-emitting diode) lamp multi-light-path switching, which comprises an emission plate, a detection room and photoelectric sensors, wherein the detection room is internally provided with a plurality of colorimetric grooves capable of placing cuvettes; one surface of each colorimetric groove is provided with a detection hole for placing the photoelectric sensor, the other surface is provided with a plurality of light holes, and the light holes are positioned right opposite to the detection hole; the emission plate is provided with a plurality of groups of lamp holes, an LED lamp is arranged in each lamp hole, each lamp hole is communicated with one light hole, and the diameter of the light hole is smaller than that of the lamp hole; and the LED is supplied with power by an external circuit board in a pulse way. The colorimetric system has the advantages of being wide in application scope, high in detection efficiency, good in flexibility and hig