Petr Bouchner | Czech Technical University in Prague (original) (raw)

Papers by Petr Bouchner

The paper describes specifics of various (and different) scenarios, in which in-car light conditi... more The paper describes specifics of various (and different) scenarios, in which in-car light conditions plays important role and their simulation could be positively affected by the use of Dynamic In-Cockpit Lighting System (DYICOLIS). A specially designed experiment was performed on the simulator equipped with DYICOLIS, with a goal to compare driving simulation fidelity with and without use of this system and also to compare it to driving in a real car in similar but real environments. Besides subjective drivers’ evaluation questionnaires, also the objective methods for assessment were involved ? in this case the eye-tracking device analysis. Finally the paper presents discussion on the results of both, subjective and objective measures.

Our paper describes a design and realization of the system DYICOLIS (Dynamic in-Cockpit Lighting ... more Our paper describes a design and realization of the system DYICOLIS (Dynamic in-Cockpit Lighting System) which allows dynamical illumination projected on the driver and the cockpit of a driving simulator and its incorporation into the driving simulator systems. It describes the ways of how the visual databases for the system are designed and the ways how the reflected or transmitted light from the virtual scene affects the "shadow world". It also presents the software and hardware realization of the system incorporated into our steady based driving simulator. Finally the paper proposes planned enhancements and improvements of DYICOLIS.

Software equipment of interactive vehicle simulators consists of two main parts; a generator of v... more Software equipment of interactive vehicle simulators consists of two main parts; a generator of virtual reality (generating 3D graphics and surrounding sound) and a mathematical model of vehicle dynamics. The basic elements of mathematical dynamics model of the vehicle consists first of a physics of an engine and a set of parameterization files that define the current values of the parameters of the vehicle, second of the world which with each particular vehicle can interact. The paper describes the development, implementation and testing of such a mathematical software model, which was subsequently used in the latest driving simulator in the laboratories at the Faculty of Transportation Sciences of the Czech Technical University in Prague.

In this contribution are discussed the following questions, related also to presentation [1]: a) ... more In this contribution are discussed the following questions, related also to presentation [1]: a) which kinds of human decision are most important when he/she interacts with artificial system, b) how the parameters of such decisions can be improved as concerns the reliability of human subject interaction with artificial system. Some of the presented ideas, measured results and proposed approaches are based on results obtained in 2008 and few past years in the range of project ME 949 of the Ministry of Education of the Czech Republic, of the project 1F84B042520 of the Ministry of Transportation of the Czech Republic, of the project 102/07/1191 of the Grant agency of Czech Republic and of the project IAA201240701 of the grant agency of the Academy of Sciences of the Czech Republic. This concerns also both the PhD. Theses [2] and [3].

SMO'06 Proceedings of the 6th WSEAS International Conference on Simulation, Modelling and Optimization, Sep 22, 2006

The paper discusses the problem of drowsiness and phenomenon of microsleeps of healthy drivers. I... more The paper discusses the problem of drowsiness and phenomenon of microsleeps of healthy drivers. It describes our experiments done on our driving simulators. First there is a brief description of simulator which was used for the experiments, its capabilities and necessary changes which we did so that it fits best the needs of such experiments. The paper presents requirements on the overall design of experiments performed on driving simulators. It describes requirements on the design of the testing tracks and our experiences with measurements. The results of classification based on EEG, video record expert analysis, steering wheel correction movements, lateral position and average velocity change trends and weaving and drive out from the lane are presented. Finally discussion on analysis methods used for investigation in driver's drowsiness is done.

International Conference on Systems, Jul 11, 2005

Investigation of Human Machine Interface (HMI) is on the top level of the interest when studying ... more Investigation of Human Machine Interface (HMI) is on the top level of the interest when studying the reliability of the human operators. We do this investigation using a complex measuring system involving a realistic Car Driving Simulators. The first part of this paper gives an overview of requirement on design of such an experimental laboratory equipped with driving simulator. Our research is mainly focused on the reliability of the interaction processes between the driver and vehicles so main part of the article deals with examples of usage and development of the methodology which we apply on experimentations on vehicle simulators.

Advances in transportation studies, 2011

The paper presents results from measurements focused on use of IVIS (especially in-car navigation... more The paper presents results from measurements focused on use of IVIS (especially in-car navigation systems) by elderly drivers. The whole set of analysis presented in the paper covers the outputs from the series of eight experiment sets each performed on 25 tested drivers (elderly drivers and a control group). Besides subjective measures, mainly objective ones were analyzed - reaction times - and were considered. In this paper the results of analysis of outputs from the set of the simulator experiments described above are shown. From the results it is possible to derive parameters of such devices which should fit the elderly driver population best in means of safe manipulation during driving. Keywords - Driver distraction, HMI, driving simulation, elderly drivers, IVIS Language: en

Springer eBooks, 2012

ABSTRACT In this contribution are discussed the main problems appearing in development of tools f... more ABSTRACT In this contribution are discussed the main problems appearing in development of tools for decreasing the negative impacts of human faults when driving the road vehicle. The interest is given especially to analysis of causes of these faults, to finding of suitable indicators for attention level measurements and to possibilities of improving the driver resistance to attention decreases.

The contribution deals with problems of a passive safety of autonomous vehicles, focused on speci... more The contribution deals with problems of a passive safety of autonomous vehicles, focused on specifics of car-crash accident. The paper describes a non-standard side crash test of two passenger cars, during which the interior equipment and placement of test figurines inside car were accommodated to simulate an expected arrangement of future autonomous cars. Motion of the equipment inside the car interior was tracked during the test with the focus on its possible impact on passenger's safety. The contribution further deals with specifics of autonomous vehicle crew protection from the point of view of passive and integrated safety.

One of the most serious problems concerning car safety is a driver's attention decrease and fatig... more One of the most serious problems concerning car safety is a driver's attention decrease and fatigue which could lead to the micro-sleep. For development of a warning system, which is able to detect driver's inability to drive safely, it is necessary to have a complex knowledge about the processes inside driver's body and mind. From that reason it is needed to perform plenty of experiments. Our laboratory investigates in actual driver's state mainly using the means of brain activity measurements (EEG analysis) and other additional biological signals. The EEG measurements are very sensitive to environmental influences. On the other hand it is necessary to put the experimenting person into the environment which is as close to reality as possible. Usage of car simulation devices appears to be a good compromise. The paper describes design of the experiments, scenarios and tracks, based on a knowledge obtained from a good ample of already performed measurements. The paper also shows certain results form the analysis of biological signals (mainly EEG and ECG) correlated with analysis of the ride and subjective ratings.

Summer Computer Simulation Conference, Jul 13, 2009

ABSTRACT The paper presents a systemic view of a structure of the system which allows illuminatio... more ABSTRACT The paper presents a systemic view of a structure of the system which allows illumination of the car simulator cockpit interior dynamically and describes recent features of its third generation. After a brief description of DYICOLIS's main idea and structure, a description of software and hardware implementation is presented. The core of the presented system is the generator of appropriate "shadow-light world", especially with use of car cockpit coulisse. Besides enhancements and refinements of already described functions, the paper depicts new features of the system. First, it is a unified approach for handling shadow-light world, joining together the previously separated static and dynamic interpretation. Such architecture allows us to bind 3D definition of projected virtual scenery with our shadow-light world generation, consequently with a possibility for automation of its creation process. Finally, the paper introduces incorporation of weather simulation into the shadow-light world, which indisputably affects the inner-car light conditions and also a look of patterns, which are projected onto the cockpit parts and the driver as well.

Университет еңбектері, 2022

ACMOS'05 Proceedings of the 7th WSEAS international conference on Automatic control, modeling and simulation, Mar 13, 2005

ABSTRACT The operator is required to be constantly vigilant and even more attentive when operatin... more ABSTRACT The operator is required to be constantly vigilant and even more attentive when operating the device. The paper introduces a cooperation of a car simulator realized in virtual reality (VR) environments and measurements of "human driver behavior" focused mainly on aspects of HMI and drivers' attention decrease. In the first part a conception and a development of our VR car simulation devices is described. During the development of car simulators many problems need to be solved. One of these problems is represented by a simplification and a partial automation of a scenery creation. The first part is dedicated to algorithms used in our tools, which help to automate the creation of virtual scenes. The next part analyses in more details tools themselves and the rest of this section deals with demonstration of scenes, which were modeled using these tools. For simpler and faster generation of virtual sceneries it is suitable to store the models within a hierarchical database 3D object. Our database includes model objects from which subsequently forms surroundings for road virtual scenes. In the article it is described how to specify 3D model properties-their fundamental characteristic and consequent differentiation into specific categories. Sound perception cues are one of the most important ones besides the visual cues in the car simulation. The audio section of this article deals with simulating a sound of a car engine as a most significant audio stimulant for the driver. It shows basics of cross fading system which renders the car audio from multiple looped samples. First part contains analysis of car engine sound; the second describes how to synthesize it on the computer. A validation measurements and consequent results are shown at the end of this section. The final paragraphs shows examples of experiments developed for measurements of driver's fatigue and other aspects of driver's behavior.

This paper presents experiences from several hundred measurements and analysis of experiments per... more This paper presents experiences from several hundred measurements and analysis of experiments performed on our driving simulators. Besides the experiment setup, it describes several different methods used for the classification of driver behavior based mainly on analysis of technical outputs from simulated driving. Our goal is to find out the objective methodology for evaluation of driver's actual state and for assessment of IVIS (or further any HMI devices used in the cars) with respect to drivers' skills and personalities. Such methodology, if successfully found, could serve in future as a comprehensive compound of automobile development process.

Neural Network World, 2020

Neural Network World, 2019

This article deals with a Human Machine Interface of Electric vehicles starting from the history ... more This article deals with a Human Machine Interface of Electric vehicles starting from the history of Electric Vehicles HMI, describes currently used system elements and provide evaluation of their advantages and disadvantages. A new concept of Dynamic HMI for Electric Vehicles is introduced to improve EV efficiency in terms of energy consumption and range distance, and consequently increase their popularity among users. This interface is capable to adapt itself to user or system needs and changes dynamically based on EV battery State of Charge or reachability of desired destination. Such implementation of HMI address one of the main reason why users still prefer conventional vehicles with internal combustion engine to EV - range anxiety phenomena. This article aims to be a guideline for a design of new concept of HMI for EV, studies user requirements and propose a methodology of system development including concept definition and user acceptance validation methodology on vehicle driving simulator.

This article states a set of problems associated with Human Machin Interface of future vehicles b... more This article states a set of problems associated with Human Machin Interface of future vehicles based on the technological and social trends of modern society. Smart Cities, Connected Cars, and new propulsion systems bring a new set of questions and problems for the HMI studies. This article tries to state these questions based on the history of the development and analysis of the modern in vehicle HMI from three layer Driver Vehicle interaction model. Additionally, future trends and technologies are considered and described.