1       Definition

The set of Environment Data such as: temperature, air pressure, humidity etc.

2       Functional Requirements

  1. Temperature is expressed in degrees Celsius.
  2. Pressure is expressed in millibar.
  3. Air humidity can be:
    1. Relative, i.e., the ratio between the actual amount of moisture and the maximum amount possible at the current temperature and expressed in %.
    2. Absolute, i.e., the actual amount of moisture in the unit volume of air and is expressed in grams per kilogram (g/kg).
  4. Wind speed is expressed in m/s.

3       Syntax


4       Semantics

Label Size Description
Header N1 Bytes
·         Standard 9 Bytes The characters “CAV-OED-V”
·         Version N2 Bytes Major version – 1 or 2 characters
·         Dot-separator 1 Byte The character “.”
·         Subversion N3 Byte Minor version – 1 or 2 characters
OtherEnvironmentDataID N4 Bytes ID of the Other Environment Data set.
OtherEnvironmentData N5 Bytes The Other Environment Data set.
·         CAVIdentifier N6 Bytes Preferred seat position.
·         Time N7 Bytes Measure in second.
·         Temperature N8 Bytes Measured in degrees Celsius
·         Pressure N9 Bytes Measured in millibar
·         Air humidity N10 Bytes Measured in g/kg.
·         Wind speed N11 Bytes Measured in m/s
DescrMetadata N12 Bytes Descriptive Metadata