Ferenc Péter Speiser

58851057800

Publications - 4

Embedded System Simulation Using Renode †

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

In the automotive industry, the reduction of development costs is of key importance. The development of electrical hardware is an expensive, time-consuming process with a lot of development stages (e.g., prototyping, electrical testing, mechanical testing, lifecycle testing). There is a growing need to increase the cost-effectiveness of the development and testing phases of embedded software using virtualization. Using this method, less prototype manufacturing is necessary since the simulations allow for faster and more effective discovery of a large portion of possible faults without building a hardware prototype. Renode is an open source embedded system simulation framework that facilitates software-based testing. The main goal of this paper is to explore the usability of the framework for automotive applications.

Open Access: Yes

DOI: 10.3390/engproc2024079052

Embedded System Simulation for Electrical Hardware Test Virtualization

Publication Name: Chemical Engineering Transactions

Publication Date: 2024-01-01

Volume: 114

Issue: Unknown

Page Range: 799-804

Description:

In the automotive industry, the reduction of development costs has a key importance. Also, the duration of the development is a significant aspect. Electrical hardware development is an expensive, time-consuming process with a lot of development stages (e.g., prototypes, electrical tests, mechanical tests, lifecycle tests). Virtualization is an important factor in making electrical component development more sustainable; using this method, less prototype manufacturing is necessary since the simulations make it faster and more effective to find out a large portion of possible faults without building a hardware prototype. The main goal of the paper is to explore the capabilities of seven software solutions that can manage the virtualization of the electrical development toolchain. The simulation environment should manage the simulation of the electrical circuit, including the sensors and loads, the microcontroller, and the execution and debugging of the uploaded program code. The study provides guidance on choosing the proper simulator depending on the simulation focus.

Open Access: Yes

DOI: 10.3303/CET24114134

Energetic Analysis of Mixed-Flow Grain Dryers: a Case Study in Hungary

Publication Name: Chemical Engineering Transactions

Publication Date: 2024-01-01

Volume: 114

Issue: Unknown

Page Range: 847-852

Description:

Convective grain drying powered by natural gas is a highly energy-intensive process with a substantial impact on the secure storage of harvested grain. By improving energy efficiency and reducing natural gas consumption, it is possible to decrease the operation's ecological footprint by lowering CO2 emissions. However, previous studies often analyse the drying process as a whole, giving less attention to individual processes. For instance, uneven drying can lead to issues during storage, such as microbial growth and dust accumulation. This paper presents an energetic analysis of mixed-flow grain dryers based on a case study in Hungary for the long term. It examines the fundamental physical characteristics of each dryer and identifies key modifications to ensure proper operation. The paper also introduces a precision drying method that allows fine-tuning of process parameters (e.g., airflow, grain flow) to optimise grain moisture content to the desired level based on large-scale continuous temperature measurements. These measurements can also validate previous modifications, enabling ongoing monitoring of optimal operating conditions via heatmaps.

Open Access: Yes

DOI: 10.3303/CET24114142

Web-Based Map Service Connected to ROS2 Robot Network

Publication Name: Chemical Engineering Transactions

Publication Date: 2023-01-01

Volume: 107

Issue: Unknown

Page Range: 55-60

Description:

The key for testing the driving assistance and autonomous vehicle systems is to establish an advanced infrastructure. For special manoeuvres, a special track is necessary. The path of the track is always changing as the investigated function changes. This means a lot of track construction work for the operation of the proving ground. The engineers of the ZalaZone proving ground perform continuous track construction tasks for the various dynamic tests, which is a time-consuming, resource-intensive task. The goal is to develop an environment that can manage a semi-automatic test track building in a sustainable way. The placing of traffic cones can also be carried out by autonomous robots designed for this purpose, according to pre-designed plans, which are under development at the University of Győr. Automating this task can save a lot of energy, live work, and fuel also can optimize the load and the route of the robots. This paper discusses the theoretical design and possible physical architecture of a framework for the coordination of the tools used. It presents a possible software environment for managing and publishing data in a form that can be integrated with map data represented in different map projection systems. This requires the development of an HTTP-ROS2 interface that can transfer position and other descriptive data of participants communicating on the ROS2 network to the web server that provides the base maps. This work presents a map interface for the near real-time display of positional data from robotic tests carried out in the ZalaZone area. As a result, the map allows the movement of registered objects to be tracked and displayed on the web map via the internet on a publicly accessible server running on the university network. The server is currently capable of mapping the data recorded on the ROS2 network, but only on the local network. It implements the display of pre-saved data from the ROS2 network via the Internet. The long-term goal is to develop a web-accessible mapping framework that allows the current position of the cone-positioning robots to be displayed and controlled through this interface.

Open Access: Yes

DOI: 10.3303/CET23107010