Indoor positioning method and system based on visible light communication

The invention relates to the technical field of positioning, and discloses an indoor positioning method and system based on visible light communication, an LED of a quantum dot light conversion material is introduced to emit a light signal of a specific wave band, and the light signal of the specific wave band carries the number of the inherent position of the LED in a room. The optical signals of the specific wave band are received and stored through a photoelectric detector of the mobile phone, screening is carried out according to whether the optical signals are in the specific wave band or not, whether the optical signals appear repeatedly or not and whether the time interval between the two appearing times is equal to the time slot interval of the LED emitting optical signals or not, and finally the optical signal with the maximum light intensity is selected from the optical signals to be decoded. And searching the corresponding LED on the indoor map according to the number obtained by decoding to obtain