Patent ID: 11971493
Assignee: NANNING FULIAN FUGUI PRECISION INDUSTRIAL CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The electronic device of claim 9, wherein further comprising:
matching the signal strength values of the Wi-Fi tag with the signal strength list in the map database using a matching formula represented as:, M
    ⁡
    (
    
     x
     ,
     y
    
    )
   
   =
   
    
     
      ∏
      
       i
       =
       1
      
      N
     
      
     
      
       (
       
        1
        +
        λ
       
       )
      
      ⁢
      
       exp
       ⁡
       (
       
        -
        
         
          (
          
           
            (
            
             
              x
              i
             
             -
             
              y
              i
             
            
            )
           
           
            
             x
             i
            
            -
            α
           
          
          )
         
         2
        
       
       )
      
     
    
    =
    
     
      
       (
       
        1
        +
        λ
       
       )
      
      N
     
     ⁢
     
      
       ∏
       
        i
        =
        1
       
       N
      
       
      
       exp
       ⁡
       (
       
        -
        
         
          (
          
           
            (
            
             
              x
              i
             
             -
             
              y
              i
             
            
            )
           
           
            
             x
             i
            
            -
            α
           
          
          )
         
         2
        
       
       )
      
     
    
   
  
  ;
 

where N is the number of the Wi-Fi APs within a signal range of the Wi-Fi tag, x is a signal strength value between a Wi-Fi AP and a Wi-Fi tag in the map database, y is a signal strength value between a Wi-Fi AP and a Wi-Fi tag collected in a positioning phase, and λ and α are measured values.