Fusokukei.h

00001 #ifndef FUSOKUKEI_H
00002 #define FUSOKUKEI_H
00003 
00004 #include "mbed.h"
00005 
00006 #define AIR_K 0.14737
00007 #define AIR_N 1.19
00008 #define AIR_A 1.4314
00009 #define AIR_B 0.209
00010 #define AIR_SUM_NUM 20
00011 #define AIR_BUFFER 30
00012 
00013 float airSpeed = 0.0;
00014 float airSpeed_ave = 0.0;
00015 float airSpeed_max = 0.0;
00016 int air_counter = 0;
00017 float air_sum[AIR_SUM_NUM] = {0.0};
00018 
00019 class Fusokukei{
00020     protected:
00021     
00022     public:      
00023     float make_ave(float s[], int n){
00024         float p = 0;
00025         int i;
00026         for(i = 0; i < n; i++){
00027            p += s[i];    
00028         }
00029         if(n != 0)
00030         return p / n;    
00031         else
00032         return 0;
00033     }
00034     
00035     void calcAirSpeed(float x){
00036           air_sum[air_counter % AIR_SUM_NUM] = (float)AIR_K * (float)pow((double)x, 1 / AIR_N);
00037           if(air_counter % AIR_SUM_NUM == 0)
00038             air_counter = 0;
00039           airSpeed_ave = make_ave(air_sum, AIR_SUM_NUM);
00040           airSpeed = airSpeed_ave*AIR_A+AIR_B;
00041           if(airSpeed > airSpeed_max)
00042             airSpeed_max = airSpeed;  
00043           air_counter++;
00044       }
00045 };
00046 #endif