Line data    Source code

       1             : /****************************************************************************/
       2             : // Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
       3             : // Copyright (C) 2001-2024 German Aerospace Center (DLR) and others.
       4             : // This program and the accompanying materials are made available under the
       5             : // terms of the Eclipse Public License 2.0 which is available at
       6             : // https://www.eclipse.org/legal/epl-2.0/
       7             : // This Source Code may also be made available under the following Secondary
       8             : // Licenses when the conditions for such availability set forth in the Eclipse
       9             : // Public License 2.0 are satisfied: GNU General Public License, version 2
      10             : // or later which is available at
      11             : // https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
      12             : // SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
      13             : /****************************************************************************/
      14             : /// @file    HelpersHBEFA4.h
      15             : /// @author  Daniel Krajzewicz
      16             : /// @author  Michael Behrisch
      17             : /// @date    Mon, 10.05.2004
      18             : ///
      19             : // Helper methods for HBEFA4-based emission computation
      20             : /****************************************************************************/
      21             : #pragma once
      22             : #include <config.h>
      23             : 
      24             : #include <vector>
      25             : #include <limits>
      26             : #include <cmath>
      27             : #include <utils/common/StdDefs.h>
      28             : #include <utils/geom/GeomHelper.h>
      29             : #include <utils/common/SUMOVehicleClass.h>
      30             : #include "EnergyParams.h"
      31             : #include "PollutantsInterface.h"
      32             : 
      33             : 
      34             : // ===========================================================================
      35             : // class definitions
      36             : // ===========================================================================
      37             : /**
      38             :  * @class HelpersHBEFA4
      39             :  * @brief Helper methods for HBEFA4-based emission computation
      40             :  *
      41             :  * The parameter are stored per vehicle class; 6*6 parameter are used, sorted by
      42             :  *  the pollutant (CO2, CO, HC, fuel, NOx, PMx), and the function part
      43             :  *  (c0, cav1, cav2, c1, c2, c3).
      44             :  */
      45             : class HelpersHBEFA4 : public PollutantsInterface::Helper {
      46             : private:
      47             :     static const int HBEFA4_BASE = 7 << 16;
      48             : 
      49             : public:
      50             :     /** @brief Constructor (initializes myEmissionClassStrings)
      51             :      */
      52             :     HelpersHBEFA4();
      53             : 
      54             :     /** @brief Returns the emission class described by the given parameters.
      55             :      * @param[in] base the base class giving the default
      56             :      * @param[in] vClass the vehicle class as described in the Amitran interface (Passenger, ...)
      57             :      * @param[in] fuel the fuel type as described in the Amitran interface (Gasoline, Diesel, ...)
      58             :      * @param[in] eClass the emission class as described in the Amitran interface (Euro0, ...)
      59             :      * @param[in] weight the vehicle weight in kg as described in the Amitran interface
      60             :      * @return the class described by the parameters
      61             :      */
      62             :     SUMOEmissionClass getClass(const SUMOEmissionClass base, const std::string& vClass, const std::string& fuel, const std::string& eClass, const double weight) const;
      63             : 
      64             :     /** @brief Returns the vehicle class described by this emission class as described in the Amitran interface (Passenger, ...)
      65             :      * @param[in] c the emission class
      66             :      * @return the name of the vehicle class
      67             :      */
      68             :     std::string getAmitranVehicleClass(const SUMOEmissionClass c) const;
      69             : 
      70             :     /** @brief Returns the fuel type described by this emission class as described in the Amitran interface (Gasoline, Diesel, ...)
      71             :      * @param[in] c the emission class
      72             :      * @return the fuel type
      73             :      */
      74             :     std::string getFuel(const SUMOEmissionClass c) const;
      75             : 
      76             :     /** @brief Returns the Euro emission class described by this emission class as described in the Amitran interface (0, ..., 6)
      77             :      * @param[in] c the emission class
      78             :      * @return the Euro class
      79             :      */
      80             :     int getEuroClass(const SUMOEmissionClass c) const;
      81             : 
      82             : 
      83             :     /** @brief Computes the emitted pollutant amount using the given speed and acceleration
      84             :      *
      85             :      * For most emissions the function yields mg/s. For fuel ml/s is returned if volumetric fuel has been requested.
      86             :      *  Coasting and an engine which is off by the given param result directly in zero emission.
      87             :      *
      88             :      * @param[in] c emission class for the function parameters to use
      89             :      * @param[in] e the type of emission (CO, CO2, ...)
      90             :      * @param[in] v The vehicle's current velocity
      91             :      * @param[in] a The vehicle's current acceleration
      92             :      * @param[in] slope The road's slope at vehicle's position [deg]
      93             :      * @param[in] param parameter of the emission model (only used for the coasting deceleration and to determine whether the engine is off)
      94             :      * @return The amount emitted by the given emission class when moving with the given velocity and acceleration [mg/s or ml/s]
      95             :      */
      96    14484204 :     inline double compute(const SUMOEmissionClass c, const PollutantsInterface::EmissionType e, const double v, const double a, const double slope, const EnergyParams* param) const {
      97    14484204 :         if (param != nullptr && param->isEngineOff()) {
      98             :             return 0.;
      99             :         }
     100    14484204 :         const std::string& fuel = getFuel(c);
     101    14484204 :         if (fuel != "Electricity" && v > ZERO_SPEED_ACCURACY && a < getCoastingDecel(c, v, a, slope, param)) {
     102             :             return 0.;
     103             :         }
     104    12311838 :         const int index = (c & ~PollutantsInterface::HEAVY_BIT) - HBEFA4_BASE;
     105             :         double scale = 1.;
     106    12311838 :         if (e == PollutantsInterface::FUEL && myVolumetricFuel) {
     107           0 :             if (fuel == "Diesel") {
     108             :                 scale *= 836.;
     109           0 :             } else if (fuel == "Gasoline") {
     110             :                 scale *= 742.;
     111             :             }
     112             :         }
     113    12311838 :         const double* f = myFunctionParameter[index][e];
     114    12311838 :         return (f[0] + f[1] * v + f[2] * a + f[3] * v * v + f[4] * v * v * v + f[5] * a * v + f[6] * a * v * v) / scale;
     115             :     }
     116             : 
     117             : 
     118             : private:
     119             :     /// @brief The function parameter
     120             :     static double myFunctionParameter[833][7][7];
     121             : 
     122             : };