Roland Rathmann - Support in the ongoing project

Vierkirchen, Germany

Experience

Jan 2024 - Jun 2024

6 months

Support in the ongoing project

Automotive supplier

Closing the safety case
Creating detailed traceability matrices and targeted test expansions
Transferring requirements to other database systems
Structuring requirements, evaluation, and completeness, including setting up new test cases based on use-case-based test strategies and results from internal traceability matrices
Partial automation of tasks within a requirement assessment tool
Tools and languages: MS Teams, ReqIF, Enterprise Architect, Codebeamer, proprietary tools for creating and evaluating traceability matrices (around 1000 x 1000)

Mar 2023 - Jun 2023

4 months

Process upgrades regarding functional safety

Maximator-Hydrogen

Process upgrades regarding functional safety and self-approval of fueling stations
Correcting formulas for failure rates and creating a concept for process changes
Support in expanding safety processes and coordinating safety standards (including DIN EN 61508, DIN EN 61511, VDI 2180)
Developing suitable formulas for (in)homogeneously redundant MooN architectures for SIL-dependent PFD calculation
SIL reduction and tool qualification
Coordination and cooperation with RAMS management
Tools and languages: MS Teams, Visio, MindManager, Functional Safety Suite, proprietary tools

Jul 2022 - Dec 2022

6 months

Concept for an autonomous driving platform, SAE Level 4

TTTech-Auto (on behalf of Sthree / Computer Future)

Optimizing and evaluating diversity in the redundant architecture
Conducting FMEA, DFA, and concept support
Various analyses, including Markov chain analyses and goal-structure notations
Considering cybersecurity
Tools and languages: MS Teams, Confluence, Enterprise Architect, PRISM, GitHub, use of proprietary tools

Mar 2022 - Jul 2022

5 months

Requirement assessment

Bosch

Creating a safety manual for a computing platform (SEooC)
Achieved success with an improved version of the safety manual
Conducting a requirements analysis and review of the safety manuals
Risk assessments during implementation
Evaluating a DFA and creating a DFA template
Revising the safety manual together with functional safety
Tools and languages: MS Teams, DOORS ("Jazz"), GitHub, use of proprietary tools

Sep 2021 - Jan 2022

5 months

Functional safety engineering

FEV / EVA Fahrzeugtechnik

Homologation and re-approval of a technically modified Li-ion energy storage system (after-sales safety for BMW)
Performing impact analysis and creating all resulting work products
Developing the verification and validation plan, safety case update, and safety argumentation
Identifying differences and similarities between homologation tests (UN ECE R100), transport standard UN 38.3, and GB 38031:2020 (Chinese standard)
Setting up appropriate test plans
Completing analyses and safety planning to close the safety case
Tools and languages: MS Teams, DOORS, Confluence, Tortoise, GitHub, cell simulation (fault injection simulation), fault tree analysis, event tree analysis (ETA)

Nov 2020 - Dec 2021

1 year 2 months

Vienna, Austria

Functional Safety Support for Driver Assistance Systems

TTTech

Middleware platform for autonomous driving, operating system and safety services as SEooC development
Support and advice for the agile feature development regarding functional safety, safety case, and safety argumentation
Conducting a software integration design FMEA and a process FMEA according to VDA guidelines, considering security
Participating in reviews and performing confirmation reviews for D-FMEA and P-FMEA
Supporting safety management and deriving relevant requirements from the FMEAs
Tools and languages: MS Teams, Windchill PTS, Confluence, Collaborator

Jan 2019 - Oct 2020

1 year 10 months

Unterschleißheim, Germany

Functional Safety Engineering

Center for Autonomous Driving (BMW)

Support and advice for the agile development work of feature teams regarding functional safety
Developing workflows for software safety analyses, such as DFA (Dependent Failure Analysis)
Support with SOTIF topics and automating steps for more efficient software FMEA execution
Semi-automating the analyses by extracting information from the build process and Magic Draw content
Developing a prototype for a SOTIF scenario generator
Python scripting for software analysis and management of DFA results
Identifying residual risks in adaptive AUTOSAR
Tools and languages: Python + JSON, Magic Draw, Bazel, model design for a fault propagation simulator (proprietary), tool for generating and evaluating SOTIF scenarios (proprietary)

Apr 2017 - Dec 2018

1 year 9 months

Functional Safety Management

Autoliv/Veoneer

Standards-compliant coordination of work products for functional safety according to ISO 26262
Hazard analysis with risk assessment for an emergency braking system and ACC with follow mode, ASIL B(D)
Defining a safety concept (safety-out-of-context)
Creating safety plans, a functional safety concept, and the technical safety concept
Conducting FMEA and aligning and coordinating distributed development (Sweden, Germany)
Advising and contributing to setting up an ASIL B capable development process for model-based software development
Item definition for the highway pilot and autonomous parking on public parking lots
Developing safety goals and requirements for autonomous driving according to SAE Level 3
Tools and languages: Telelogic DOORS, custom tool for editing GSN diagrams (Goal Structure Notation), Traceability Browser, Enterprise Architect, JIRA

Jan 2017 - Apr 2017

4 months

Functional Safety Management for fail-safe power supply of an autonomous vehicle

South German Automotive Supplier

Standards-compliant coordination of work products for functional safety according to ISO 26262
Defining the safety plan and a Development Interface Agreement (DIA) with the OEM
Integrating safety activities into the project plan
Determining the extra scope of requirements from ISO 26262 compared to project work under ASPICE
Creating safety plans and project plans
Identifying gaps and developing the deltas between ASPICE and ISO 26262
Tools and languages: Polarion, mind map, Microsoft Project (MSP), interfacing mind map with MSP

Oct 2015 - Dec 2016

1 year 3 months

Functional Safety Management for Steering Power Assist Systems

Thyssen Krupp

Standards-compliant coordination of work products for functional safety according to ISO 26262
Hazard analysis with risk assessment for steering assistance (ASIL D), automatic parking function (ASIL D), and calculation of absolute steering angle (ASIL B)
Creating safety plans and a functional safety concept
Identifying gaps at both functional and system levels
Improving audit results
Tools and languages: Telelogic DOORS, custom tool for editing GSN diagrams (Goal Structure Notation), IBM Change, Enterprise Architect

Mar 2014 - Sep 2015

1 year 7 months

Functional Safety Support

Porsche Engineering and Porsche AG

Creation of a standards-compliant functional safety concept (ISO 26262) for the power distribution network (high voltage, 12 V and 48 V) and a 7.2 kW on-board charger (OBC)
Hazard analysis with risk assessment and process-oriented work
Creation of safety plans and a functional safety concept for plug-in charging
Definition of safety goals and conducting hazard and risk analysis (H&R)
Preparation and participation in FMEA and FTA
Obtaining safety approval for the developed OBC component
Tools and languages: Telelogic DOORS, Dimensions, APIS Software, custom tool for editing GSN diagrams (Goal Structuring Notation)

May 2011 - Feb 2012

10 months

Electrical and functional safety of a high-voltage heater

Webasto

Standards-compliant hazard and risk analysis (ISO 26262) and electrical safety
Development of an electrical safety and isolation coordination concept according to ISO 6469-3 and 60664-X
Development of a comprehensive safety concept in collaboration with TÜV SÜD
Derivation of requirements from safety goals and support of software development under ASIL B
Creation of a tool for handling HARA deltas due to functional changes
Software development for the prototype using Infineon microcontroller TLE9832
Tools and languages: Excel with macros, Keil µVision, Serena PVCS, PRQA static quality analysis (MISRA), National Rhapsody, DOORS, MindManager, Vector CANape for XCP debugging

Aug 2010 - May 2011

10 months

Electrical and functional safety of high-voltage systems

TÜV SÜD Automotive

Assessment of concepts and chargers regarding standards compliance and electrical safety
Evaluation of projects in hybrid drives and on-board chargers regarding ISO 60664, EN 6469, IEC 61851, IEC 61508, and ISO 26262
Calculation of high-voltage insulation coordination
Support in creating test plans (DVPs) for a TÜV SÜD quality mark
Tools and languages: FMEA support tools, Office tools, MindManager

May 2009 - Mar 2010

11 months

Development of a BMS for lithium-ion batteries

Litec Battery GmbH

Development of a BMS system (HW+SW) for industrial storage systems as well as EV and PHEV vehicles
Construction of a complete battery simulator including aging model, thermal model, and performance prediction
Optimization of active cell balancing
Conducting a lecture series on BMS basics and balancing strategies
Expansion of the simulator to a HiL BMS test system with a virtual battery
Integration of Matlab models into the simulator interface under Labview 9.0
Creation of concepts for cell safety stabilization and cell balancing
Generated two patent proposals
Tools and languages: Infineon 164 XE, XC2267, XC888, Labview V8.6/9.0, Matlab, MS Office, OPEN Project

Apr 2007 - Jul 2007

4 months

Function development for supercap storage and Li-ion battery

SVDO

Prototype construction (A-samples) of supercap storage and Li-ion high-voltage batteries
Function development and derivation of formulas for microcontroller programming
Model-based development of a highly efficient balancing methodology for supercap storage
Development of computational models for battery self-discharge and aging
Construction of simulators for supercap and lithium-ion storage with performance prediction and driving cycle application (e.g., NEDC)
Tools and languages: Labview V8.2, Microsoft Office tools

Oct 2005 - Feb 2006

5 months

Requirement Tests for Airbag Control Unit

Conti/Temic

C programming for an airbag control unit and implementation of customer requirements
Creating the requirement test specifications for the airbag safety concept with redundant controller monitoring
Conducting tests and creating test reports
Participating in code reviews and working according to the V-model
Tools and languages: IAR development system, C, MISRA rules, EasyCase, PVCS, TestTrackPro, Motorola Star-12 processor, i-system ic4000 emulator, serial UART communication

Mar 2005 - Sep 2005

7 months

Firmware for the Quasar Confocal Microscope

Leica microsystems

Developed firmware for internal control of lasers, mirrors, shutters, and apertures
Developed a functional interface for CAN-bus-based stepper motor control functions
Expanded verification tests on a C# test bench under Windows XP
Troubleshooted image transmission from FPGA to PC over USB 2.0
Tools and languages: MS Visual Studio C#, .NET Framework v1.1, Keil uVision 3, Cypress EZ-USB FX2, Microchip 18FXXX CAN controller, MCP2515, I2C, Dallas OneWire bus, FPGA Spartan III

Jul 2004 - Sep 2004

3 months

Verification of an ASIC for battery level indication

mikron AG

Created a WINAPI application for analysis, verification, and demonstration of a sensor chip for lithium-ion cells
Independently managed the project including software-based compensation for on-chip bugs
Implemented security measures against software tampering and copying
Tools and languages: WINAPI, MS Visual C/C++ v6, Arcom I/O card, Xilinx FPGA, OneWire bus, mci

Nov 2002 - Jun 2003

8 months

Stuttgart, Germany

Test Monitor - Support for a chip series test

microtec GmbH Stuttgart

Developed a part of the production test program for ASIC testing on the DUO 176-S
Designed and implemented an assembly program to support series testing of an ASIC with embedded 8051 µC
Characterized an integrated 8-bit A/D converter and performed trim routines
Calculated the temperature guard band based on CPK values
Tools and languages: GCC, GNU tools, 8051 assembler

Jan 1993 - Dec 2003

11 years

Hybrid

Hardware and Software Development, Design, and QA

Battery Systems (Various Projects)

Developed a microcontroller-based battery management system (BMS) for hybrid buses, including cell internal resistance measurement
Developed a battery development and test system with 16-bit measurements for consumer electronics and automotive applications
Implemented driver software and test programs for series testing of battery modules
Developed firmware for the Accuron smart battery based on 0.6 µm chip technology, including bootloader design
Developed load-dependent algorithms to calculate the remaining runtime for mobile phones
Led projects and developed prototypes based on lithium-ion technology
Conducted audits and managed QA as the quality officer according to ISO 9001
Tools and languages: PIC assembler, Borland C/C++, SMBus, CAN bus

Jan 1981 - Dec 2003

23 years

Munich, Germany

Development of CAD/CAM tools and simulators

BMW / Munich

Developed CAD/CAM tools for designing and testing microelectronic circuits such as ASICs and PCBs
Developed mixed-mode logic simulators and fault simulators in Assembly and C
Implemented automated test pattern generation and autorouting functions
Developed a tool database for BMW body assembly using Oracle SQL Forms
Implemented a SQL Forms control for daily data backups at the BMW Munich development center
Contributed to the development of a driving simulator for real-time display of measurement data on test tracks

Summary

Low-level software development
CMMI and ASPICE-compliant design, development, documentation, and testing, developments according to ISO 26262
Battery technology: about 18 years of experience (Smart Battery Concept, charging regimes, battery management, BMS firmware models from coulomb counting to thermal monitoring and performance prediction, storage, energy management, cell balancing, system communication and diagnostics, simulation including aging in fast-forward mode/extraction of stress profiles in near real-time mode, safety analyses of HV systems, Markov chain simulation)
Functional safety; safety engineering and safety management since 2010

Skills

Operating Systems**
Real-time Operating Systems Such As Ercos
Unix (Linux)
Windows 10
Hardware**
Digital Signal Processors
Embedded Systems
Emulators
Measurement Devices, Test And Inspection Technology
Microcontrollers: Hc12 Derivatives ("Star 12"), Pic Families, Cypress Ez-usb, Fx2, Mpc555x, Msp430, Infineon 164me, Tms570, Aurix, And Others
Data Communication**
Usb 2 And Field Buses Like I2c, Smbus, Can, Lin, Spi, Onewire
Rs232, Rs454, Tcp/ip, Uucp, Xcp (Ccp), Smbus
Programming Languages**
Multiple Assemblers
C (Excellent Knowledge And Experience, > 20 Years)
C++ And C# (At Least 2 Years)
Fortran, Algol, Pascal
Python + Json, Unix Shell, Modeling Language Uml-2
Tools**
Codebeamer, Confluence
Unix Tools Make/makefile, Bazel
Sccs, Serena Pvcs
Labview Versions 6-12
Matlab/simulink/targetlink V3.0
Itemsoft (Functional Safety, Fmeda, Fta)
Enterprise Architect
Medini Analyzer (Functional Safety)
Provetech:ta
Ascet 4.2, Inca
Mks (3 Years), Doors (> 6 Years), Polarion (1/4 Year)
Pycharm/python Development Environment
Windchill Pts, Rhapsody (Introduction), Ptc, Jira, Rhapsody
Codewarrior
Isystem Ice 4000, Lauterbach Debugger
Mplab
Ms Visual C/c++ V6
Keil/µvision
Merant Error Tracker
Easycase
Ibm Change
Canoe/canape/canalyzer/diadem
Database Systems**
Dbase, Ingres, Ms Access, Oracle Including Sql Forms, Doors, Windchill
Others**
Development Of Software Products That Are On The Market In The Field Of Consumer Electronics Battery Management (Example "Accuron")
Consulting On Battery Knowledge For Oems, Battery Users, Battery Manufacturers, And Tüv Süd
Firmware Developer For The World's First Smart Battery With An Sbs-compliant Charging System
Patent Holder For Algorithms In Intelligent Batteries
Inventor And Developer Of Proprietary Tools And Methods In The Field Of Battery And Safety Engineering