Patent ID: 11927476
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for detecting ambient light, comprising:
S1: obtaining brightness information of the ambient light;
S2: determining a brightness interval of the ambient light according to the brightness information of the ambient light; and
S3: determining a reference sensor basing on a preset correspondences between a plurality of ambient light sensors and different brightness intervals, and outputting a brightness signal of a current ambient light according to a preset conversion relationship of output signals of the reference sensor to the brightness signal of a current ambient light;
wherein sizes of photosensitive areas of the ambient light sensors are inversely proportional to values of the corresponding brightness intervals,
in step S3, the preset conversion relationship is defined as:, S
   =
   
    
     
      ∑
      
       i
       =
       1
      
      n
     
     
      (
      
       
        S
        i
       
       ×
       
        k
        i
       
      
      )
     
    
    n
   
  
  ,
 

S is the output brightness signal of the current ambient light, n is a number of the ambient light sensors, ki is a gain coefficient of an i-th ambient light sensor, and Si is an output signal of the i-th ambient light sensor.