Patent ID: 11965821
Assignee: GUANGDONG OCEAN UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The optical fiber sensing system for temperature and salinity synchronous measurement according to claim 1, wherein the first translation amount and the second translation amount are respectively:, {
  
   
    
     
      
       Δ
       ⁢
       
        λ
        
         1
         ⁢
         2
        
       
      
      =
      
       
        
         α
         1
        
        ⁢
        Δ
        ⁢
        T
       
       +
       
        
         β
         1
        
        ⁢
        Δ
        ⁢
        S
       
      
     
    
   
   
    
     
      
       Δλ
       
        1
        ⁢
        3
       
      
      =
      
       
        
         α
         2
        
        ⁢
        Δ
        ⁢
        T
       
       +
       
        
         β
         2
        
        ⁢
        Δ
        ⁢
        S, wherein ΔT and ΔS respectively represent variations of the temperature and the salinity relative to a calibration points, Δλ12 is the first translation amount, Δλ13 is the second translation amount, α1 and β1 are temperature sensitivity and salinity sensitivity of the first interference spectra envelope respectively, and α2 and β2 are temperature sensitivity and salinity sensitivity of the second interference spectra envelope respectively; and
the temperature to be measured and the salinity to be measured are respectively:, {
  
   
    
     
      T
      =
      
       
        T
        0
       
       +
       
        Δ
        ⁢
        T
       
      
     
    
   
   
    
     
      S
      =
      
       
        S
        0
       
       +
       
        Δ
        ⁢
        S, wherein T is the temperature to be measured, S is the salinity to be measured, T0 is a temperature of the calibration points, and S0 is a salinity of the calibration points, and wherein the calibration point refers to the reference point of the sensor, corresponding to the specific temperature, salinity, the first interference spectra envelope and the second interference spectra envelope.