Tools/Emissions

generated on 2018-10-19 00:15:55.594646 from the wiki page for Tools/Emissions for SUMO git

SUMO includes some small-sized tools and tests that help to develop and evalue the implemented emission models. These tools are presented in the following.

emissionsMap

This tool generates matrices of emissions for a given range of velocities, accelerations, and slopes, given the vehicle's emission class mainly.

P 7 6 CO2.png The tool obtains parameter that describe the ranges and the emission classes to generate. If the option --iterate <BOOL> is set, emissionsMap iterates over all available emission classes. In this case, the option --output-file <PATH> should denote a folder the emission maps shall be written into. If --iterate <BOOL> is not set, --output-file <FILE> should name the file to generate and the emission class to write the map for must be defined using the option --emission-class <STRING>. If PHEMlight shall be used, one has to define the path to the CEP-files using the option --phemlight-path <PATH>.

The tool is located in <SUMO_HOME>/bin.

The image shows the visualisation of CO2 emission of the HBEFA v2.1-based "P_7_6" emission class.

Options

Processing

Option Description
-i <BOOL>
--iterate <BOOL>
If set, maps for all available emissions are written
-e <STRING>
--emission-class <STRING>
Defines the name of the emission class to generate the map for
--v-min <FLOAT> Defines the minimum velocity boundary of the map to generate (in [m/s]); default: 0
--v-max <FLOAT> Defines the maximum velocity boundary of the map to generate (in [m/s]); default: 50
--v-step <FLOAT> Defines the velocity step size (in [m/s]); default: 2
--a-min <FLOAT> Defines the minimum acceleration boundary of the map to generate (in [m/s^2]); default: -4
--a-max <FLOAT> Defines the maximum acceleration boundary of the map to generate (in [m/s^2]); default: 4
--a-step <FLOAT> Defines the acceleration step size (in [m/s^2]); default: .5
--s-min <FLOAT> Defines the minimum slope boundary of the map to generate (in [°]); default: -10
--s-max <FLOAT> Defines the maximum slope boundary of the map to generate (in [°]); default: 10
--s-step <FLOAT> Defines the slope step size (in [°]); default: 1

Output

Option Description
-o <FILE>
--output-file <FILE>
Defines the file (or the path if --iterate was set) to write the map(s) into

The format of the output is a CSV-like with ; as the column separator:

<speed>;<acceleration>;<slope>;<Pollutant-Type>;<Polutant-Value-in-mg/s-or-ml/s>

Emissions

Option Description
-p <PATH>
--phemlight-path <PATH>
Determines where to load PHEMlight definitions from.

Report

Option Description
-v <BOOL>
--verbose <BOOL>
Switches to verbose output; default: false
-? <BOOL>
--help <BOOL>
Prints the help screen

emissionsDrivingCycle

This tools computes emissions given a timeline of speeds/accelerations for a single vehicle. The driving cycle definition must be given using the option --timeline-file <FILE>. It must be a ';'-separated .csv-file with the following columns:

  • time (in [s]); must start at zero and be increasing in steps of 1 s
  • velocity (in [m/s] unless --kmh is set, see below)
  • acceleration (in [m/s^2]); this column may be omitted or recalculated using the option --compute-a
  • optional: slope (in [°]); if given, one has to enable it using the option --have-slope

The tool generates a ';'-separated .csv file which contains the following columns:

  • time (in [s])
  • velocity (in [m/s])
  • acceleration (in [m/s^2])
  • slope (in [°])
  • CO emissions (in [mg/s])
  • CO2 emissions (in [mg/s])
  • HC emissions (in [mg/s])
  • PMx emissions (in [mg/s])
  • NOx emissions (in [mg/s])
  • fuel consumption (in [ml/s])
  • electricity consumption (in [Wh/s])

Additionally, the sums of the generated emissions / the consumed fuel are printed on the screen.

The tool is located in <SUMO_HOME>/bin.

Options

Input

Option Description
-t <FILE>
--timeline-file <FILE>
Defines the file to read the driving cycle from.
-n <FILE>
--netstate-file <FILE>
Defines the file to read the trajectory from either in netstate or in Amitran format.
-e <STRING>
--emission-class <STRING>
Defines for which emission class the emissions shall be generated.

Processing

Option Description
-a <BOOL>
--compute-a <BOOL>
If set, the acceleration is computed instead of being read from the file.
-s <BOOL>
--skip-first <BOOL>
If set, the first line of the read file is skipped.
--kmh <BOOL> If set, the given speed is interpreted as being given in km/h.
--have-slope <BOOL> If set, the fourth column is read and used as slope (in [°]).
--slope <FLOAT> Sets a global slope (in [°]) that is used if the file does not contain slope information.

Output

Option Description
-o <FILE>
--output-file <FILE>
Defines the file to write the emission cycle results into.

Emissions

Option Description
-p <PATH>
--phemlight-path <PATH>
Determines where to load PHEMlight definitions from.

Report

Option Description
-q <BOOL>
--quiet <BOOL>
When set, the tool does not report anything; default: false
-? <BOOL>
--help <BOOL>
Prints the help screen

Seventh Framework Programme COLOMBO project This part of SUMO was developed, reworked, or extended within the project "COLOMBO", co-funded by the European Commission within the Seventh Framework Programme.



This page was last modified on 19 April 2017, at 14:31.