ALLMETEO OPEN WIND Data Format: MeteoHelix IoT Sigfox & LoRaWAN wireless message bit string verifier calculator
This calculator is meant for quick message decoding for MeteoHelix IoT micro-weather stations that send an 11byte bit-shifted string. (11Bytes comply with Worldwide regulations duty cycle to allow 144 messages/day (10minute interval per WMO meteorological standards)                        
WIND PROTOCOL START BIT (Type) = 3
Input 9 byte string (hex) =                          
hex converted to binary =                          
bit shifting string start position = 1st bit                            
Physical Property Measured = Type Battery Wind_ave10 Wind_max10 Wind_stdev10 Wdir_ave10 Wdir_max10 Wdir_min10 Wdir_stdev10 free                            
converted to binary =                            
converted to decimal =                            
Converted value in output units =                            
units n/a V m/s m/s m/s deg deg deg deg                              
resolution 1 0.05 0.1 0.1 0.1 1 1 1 1 0                            
bits 2 bits 5 bits 9 bits 9 bits 7 bits 9 bits 9 bits 9 bits 7 bits 6 bits                          
max no. of values                            
min value 0 3 0 0 0 0 0 0 0 0                            
max value                            
req min value 0 3 0 0 0 0 0 0 0 0                            
req max value 3 4.5 51 51 12.7 359 359 359 127 0 72                          
Check                          
Wind#_Max values are added to the Wind# values which are set to be 2 minute averages of 1 second measuring intervals.
Sensor Error or N/A = Maximum possible value for the physical property which in binary = 111111…. (FFFFF…. In hex)
                                                 
byte string conversion calculations to binary number format
 number position in byte string = 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
hex value @ position in byte string =
converted to binary value @ position in byte string =
                                                 
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