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Link to VSS Files

https://github.com/COVESA/vehicle_signal_specification/blob/master/spec/Cabin/HVAC.vspec

https://github.com/COVESA/vehicle_signal_specification/blob/master/spec/Cabin/SingleHVACStation.vspec


Climate Data Capabilities

Data Capability Name

Data Type

VSS Alignment

Android VHAL Alignment

Data Element Names

Element Data Type

VSS Values

Possible Interface

Data Elements

Element Data Type

Provide On/Off State of HVAC system





HVAC_POWER_ON

Provide On/Off State of Air Conditioning System

boolean

IsAirConditioningActive

boolean

True/False

HVAC_AC_ON



Provide On/Off State of Air Recirculation

boolean

IsRecirculationActive

boolean

True/False

HVAC_RECIRC_ON



Provide On/Off State of Front Defroster

boolean

IsFrontDefrosterActive

boolean

True/False

HVAC_MAX_DEFROST_ON



Provide On/Off State of Rear Defroster

boolean

IsRearDefrosterActive

boolean

True/False




Provide Estimated Cabin Air Temperature

boolean

AmbientAirTemperature

float

degrees celsius 

HVAC_TEMPERATURE_CURRENT



Provide Temperature per zone (HVAC Station)

Structure

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




Temperature

float

degrees Celsius


HVAC_TEMPERATURE_SET



Provide Fan Speed per zone (HVAC Station)

Structure

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




FanSpeed

uint8

Percentage 0 to 100

0 = off, 100 = max

HVAC_FAN_SPEED



Provide Air Distribution per zone (HVAC Station)

Structure

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




AirDistribution

Enumeration

['UP', 'MIDDLE', 'DOWN']

HVAC_FAN_DIRECTION



Provide All Climate Settings per Zone (HVAC Station)

Array of Structure

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




Temperature

float

degrees Celsius




FanSpeed

uint8

Percentage 0 to 100

0 = off, 100 = max




AirDistribution

Enumeration

['UP', 'MIDDLE', 'DOWN']




IsStationPresent

(not in VSS)

boolean

True/False

Is the Station present in THIS vehicle









HVAC_AUTO_ON?










Climate Control Capabilties

Data Capability Name

VSS Alignment

Android VHAL Alignment

Parameters / Arguments

Data Type

VSS Values

Possible Interface

Parameters / Arguments

Data Type

Control On/Off State of HVAC system




HVAC_POWER_ON

Control On/Off State of Air Conditioning System




HVAC_AC_ON

Control On/Off State of Air Recirculation

IsRecirculationActive

boolean

True/False

HVAC_RECIRC_ON



Control On/Off State of Front Defroster

IsFrontDefrosterActive

boolean

True/False

HVAC_MAX_DEFROST_ON



Control On/Off State of Rear Defroster

IsRearDefrosterActive

boolean

True/False




Control Temperature for a zone (HVAC Station)

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




Temperature

float

degrees Celsius

HVAC_TEMPERATURE_SET



Control Fan Speed for a zone (HVAC Station)

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




FanSpeed

uint8

Percentage 0 to 100

0 = off, 100 = max

HVAC_FAN_SPEED



Control Air Distribution for a zone (HVAC Station)

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




AirDistribution

Enumeration

['UP', 'MIDDLE', 'DOWN']

HVAC_FAN_DIRECTION



Control All Climate Settings for a Zone

Station

Enumeration

    - Row[1,4]

    - ["Driver","Passenger"]




Temperature

float

degrees Celsius




FanSpeed

uint8

Percentage 0 to 100

0 = off, 100 = max




AirDistribution

Enumeration

['UP', 'MIDDLE', 'DOWN']

























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