🚗 AutoSimX – Automotive ECU Simulator

A Python-based Automotive ECU Simulator featuring a Virtual CAN Bus, Multi-ECU Communication, Digital Dashboard, CAN Analyzer, DTC Management, Fault Injection, CAN Log Replay, and a lightweight AUTOSAR Runtime Environment.

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📖 Project Overview

AutoSimX is a software-based simulation platform that mimics communication between multiple automotive Electronic Control Units (ECUs) using a Virtual CAN Bus.

The simulator demonstrates how ECUs exchange CAN messages, update vehicle status, generate diagnostic information, monitor ECU health, and communicate through an AUTOSAR-inspired Runtime Environment (RTE).

The project is designed for learning Automotive Embedded Systems, CAN Communication, AUTOSAR concepts, and ECU software development.

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✨ Features

• Virtual CAN Bus Simulation
• Multi-ECU Communication
• Engine ECU
• Instrument Cluster ECU
• Body ECU
• Gateway ECU
• Digital Dashboard (PySide6)
• Live CAN Analyzer
• ECU Health Monitoring
• Diagnostic Trouble Codes (DTC)
• Fault Injection
• CAN Message Logger
• CSV Log Export
• CAN Replay Mode
• AUTOSAR Runtime Environment (RTE)
• Software Components (SWCs)

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🏗 System Architecture

Application Software Components
│
▼
AUTOSAR Runtime Environment (RTE)
│
▼
ECUs
├── Engine ECU
├── Cluster ECU
├── Body ECU
└── Gateway ECU
│
▼
Virtual CAN Bus
│
▼
Dashboard + Logger + Replay

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📁 Project Structure

AUTOSIMX/
│
├── autosar/
│   ├── rte.py
│   ├── software_component.py
│   ├── engine_component.py
│   └── cluster_component.py
│
├── communication/
│   ├── can_bus.py
│   ├── can_frame.py
│   └── message_ids.py
│
├── ecu/
│   ├── ecu.py
│   ├── engine_ecu.py
│   ├── cluster_ecu.py
│   ├── body_ecu.py
│   └── gateway_ecu.py
│
├── gui/
│   └── dashboard.py
│
├── logger/
│   ├── can_logger.py
│   └── csv_logger.py
│
├── replay/
│   └── can_replay.py
│
├── scheduler/
│   └── task_scheduler.py
│
├── models/
│
├── logs/
│
├── docs/
│
├── main.py
├── run_dashboard.py
└── run_replay.py

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⚙ Technologies Used

• Python
• PySide6
• Object-Oriented Programming
• CAN Protocol
• Automotive ECU Concepts
• AUTOSAR Runtime Environment
• CSV Logging
• Multithreading

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🚀 Installation

Clone the repository

git clone https://github.com/YOUR_USERNAME/AUTOSIMX.git

cd AUTOSIMX

Create virtual environment

python -m venv .venv

Activate

Windows

.venv\Scripts\activate

Install dependencies

pip install PySide6

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▶ Running the Simulator

Console Mode

python main.py

Dashboard

python run_dashboard.py

Replay Recorded CAN Logs

python run_replay.py

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🖥 Dashboard Features

• Live Vehicle Speed
• RPM
• Fuel Level
• Headlights
• Door Lock Status
• ECU Health Monitor
• Live CAN Monitor
• DTC Viewer

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📡 CAN Message Flow

Engine ECU
│
▼
Virtual CAN Bus
│
├────────► Cluster ECU
│
├────────► Body ECU
│
└────────► Gateway ECU

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🔄 Replay Mode

The simulator records every CAN frame into

logs/can_log.csv

Replay the recorded communication using

python run_replay.py

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🚨 Fault Injection

Supports simulation of

• Engine Failure
• CAN Message Loss
• ECU Offline
• Communication Faults

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🔧 Diagnostic Trouble Codes (DTC)

Example DTCs

Code	Description
P0100	Mass Air Flow Sensor Fault
P0200	Fuel Injector Circuit
U0100	Lost Communication With ECU

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🚘 AUTOSAR Runtime Environment

The project includes a lightweight AUTOSAR-inspired Runtime Environment (RTE) allowing Software Components (SWCs) to communicate independently of ECU implementation.

Implemented Components

• Engine Software Component
• Cluster Software Component
• Runtime Environment

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📷 Screenshots

docs/

Example

docs/
dashboard.png
can_monitor.png
ecu_health.png
dtc.png
replay.png

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📈 Future Improvements

• CAN FD Support
• LIN Bus Simulation
• UDS Diagnostics
• ISO-TP Transport Layer
• OBD-II Scanner
• ECU Firmware Update Simulation
• Secure CAN Authentication
• Automotive Ethernet Support

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📄 License

This project is licensed under the MIT License.

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👩‍💻 Author

Nakshathraa N B

B.E. Electronics and Communication Engineering

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⭐ If you like this project

Give this repository a ⭐ on GitHub.