POC Breath using SMD commercial sensors
Dependencies: iAQ_Core Adafruit_SGP30_mbed mbed BME680
Diff: flow.h
- Revision:
- 6:f6faf142e5fc
- Parent:
- 5:646a7e58989e
- Child:
- 7:f37620a76a1d
diff -r 646a7e58989e -r f6faf142e5fc flow.h --- a/flow.h Thu Jan 23 15:24:41 2020 +0000 +++ b/flow.h Fri May 01 11:58:59 2020 +0000 @@ -50,7 +50,7 @@ if (flag==1) { FPressure=P1-fp; - finalflow=(0.24*sqrt(FPressure)); //flow in litter per second + finalflow=(0.1724*sqrt(FPressure))+0.1637; //flow in litter per second, recalibrated at Imperial if(isnan(finalflow)==true){ return 0; } @@ -120,38 +120,130 @@ ///////////////////// 8-CHANNEL SENSOR LOOP ///////////////////////// -int c2612() +int c2612S0() { float sen5; + float v5; + float res5; + float r5; + while(1){ - sen5=1000*((5/sensor5*3.3)-1); + v5=3.3*sensor5; + res5=5/v5; + r5=res5-1; + sen5=1000*r5; + return (int)sen5; + } +} + +int c2612S1() +{ + float sen5; + float v5; + float res5; + float r5; + + while(1){ + v5=(3.3*sensor5); + res5=5/v5; + r5=res5-1; + sen5=1000*r5; return (int)sen5; } } -int c2610() +int c2610S0() { float sen6; + float v6; + float res6; + float r6; + while(1){ - sen6=1000*((5/sensor6*3.3)-1); + v6=3.3*sensor6; + res6=5/v6; + r6=res6-1; + sen6=1000*r6; + return (int)sen6; + } +} + +int c2610S1() +{ + float sen6; + float v6; + float res6; + float r6; + + while(1){ + v6=(3.3*sensor6); + res6=5/v6; + r6=res6-1; + sen6=1000*r6; return (int)sen6; } } -int c2620() +int c2620S0() { float sen7; + float v7; + float res7; + float r7; + while(1){ - sen7=1000*((5/sensor7*3.3)-1); + v7=3.3*sensor7; + res7=5/v7; + r7=res7-1; + sen7=1000*r7; return (int)sen7; } } -int c2602() +int c2620S1() +{ + float sen7; + float v7; + float res7; + float r7; + + while(1){ + v7=(3.3*sensor7); + res7=5/v7; + r7=res7-1; + sen7=1000*r7; + return (int)sen7; + } +} + +int c2602S0() { float sen8; + float v8; + float res8; + float r8; + while(1){ - sen8=1000*((5/sensor8*3.3)-1); + v8=3.3*sensor8; + res8=5/v8; + r8=res8-1; + sen8=1000*r8; + return (int)sen8; + } +} + +int c2602S1() +{ + float sen8; + float v8; + float res8; + float r8; + + while(1){ + v8=(3.3*sensor8); + res8=5/v8; + r8=res8-1; + sen8=1000*r8; return (int)sen8; } }