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Papers by Franc Novak

Research paper thumbnail of Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity

Sensors

An electronic circuit for contactless detection of impedance changes in a tissue is presented. It... more An electronic circuit for contactless detection of impedance changes in a tissue is presented. It operates on the principle of resonant frequency change of the resonator having the observed tissue as a dielectric. The operating frequency reflects the tissue dielectric properties (i.e., the tissue composition and on the tissue physiological changes). The sensor operation was tested within a medical application by measuring the breathing of a patient, which was an easy detectable physiological process. The advantage over conventional contact bioimpedance measurement methods is that no direct contact between the resonator and the body is required. Furthermore, the sensor’s wide operating range, ability to adapt to a broad range of measured materials, fast response, low power consumption, and small outline dimensions enables applications not only in the medical sector, but also in other domains. This can be extended, for example, to food industry or production maintenance, where the obs...

Research paper thumbnail of Oscillation test structures of active RC filters

IEE Colloquium on Testing Mixed Signal Circuits and Systems

ABSTRACT

Research paper thumbnail of Sequential Diagnosis Tool For System Maintenance And Repair Orodje Za Sekvenno Diagnosticiranje Namenjeno Vzdrevanju In Popravilu Sistemov

ABSTRACT A general framework of the Sequential Diagnosis Tool that is currently under development... more ABSTRACT A general framework of the Sequential Diagnosis Tool that is currently under development in the Computer Systems Department at the Jo#ef Stefan Institute is presented in this paper. The tool can be used as an experimental environment for the analysis of solutions of the test sequencing problem. For example, changes of decision trees and their costs as a function of system failure data can be studied. The tool also represents the basis of system diagnosis software package for a system maintenance and repair. V #lanku je opisan splo#ni koncept orodja za sekven#no diagnosticiranje, ki ga razvijamo v Odseku za ra#unalni#ke sisteme na Institutu Jo#ef Stefan. Orodje lahko slu#i kot eksperimentalno okolje za analiziranje re#itev problema generiranja testnih sekvenc. Tako lahko na primer prou#ujemo spremembe odlo #itvenih dreves in njihovih cen v odvisnosti od podatkov o odpovedi sistema. Obenem je opisano orodje osnova programskega okolja za sekven#no diagnosticiranje v okviru si...

Research paper thumbnail of Finite-element model-based fault diagnosis, a case study of a ceramic pressure sensor structure

Microelectronics and Reliability, Dec 1, 2007

Research paper thumbnail of On system diagnosis for transient fault situations

Microprocessing and Microprogramming, 1988

Research paper thumbnail of Hardware Implementation of Aes Algorithm

Research paper thumbnail of Stimulus generation of a built-in self-test using oscillation based test structures

International Journal of Electronics, Nov 1, 2002

An oscillation based test method is a simple and in some cases quite efficient method for produci... more An oscillation based test method is a simple and in some cases quite efficient method for producing a go-no go test. In this approach, the circuit is transformed into an oscillator during the test mode and the frequency of oscillation is measured and compared to a reference value obtained on a known good circuit operating in the same conditions. The

Research paper thumbnail of On analog signature analysis

Design Automation and Test in Europe Conference and Exhibition 1999 Proceedings, 1999

Research paper thumbnail of A Methodology For Model-Based Diagnosis Of Analog Circuits

Research paper thumbnail of Modelling Dynamic Dependencies by Functional Database Model

ABSTRACT The database model CDM intended for modelling design objects is presented. All propertie... more ABSTRACT The database model CDM intended for modelling design objects is presented. All properties of the design object are modeled by means of functions. For modelling dynamic dependencies among objects we introduce the notion of dynamic function. The dynamic function comprises capabilities for the description of the object static structure and algorithmic dependencies among objects. Some constraints and practical problems in using dynamic functions in the domain of geometric modelling are identified.

Research paper thumbnail of On the diagnosing algorithm for networks

Http Dx Doi Org 10 1080 00207160008804918, Mar 19, 2007

Research paper thumbnail of Efficient go no-go test of active RC filters

International Journal of Circuit Theory and Applications, Sep 1, 1998

Research paper thumbnail of The Impact of Housing on the Characteristics of Ceramic Pressure Sensors—An Issue of Design for Manufacturability

Research paper thumbnail of On The Lower Bound Of Edge Guards Of Polyhedral Terrains

International Journal of Computer Mathematics, Sep 15, 2010

Guarding polyhedral terrains is a relatively new problem in computational geometry. It is known a... more Guarding polyhedral terrains is a relatively new problem in computational geometry. It is known as NP-hard problem. In 1997, P. Bose, T. Shermer, G. Toussaint and B. Zhu stated the bounds on the number of guards and proposed some algorithms for placing vertex and edge guards. In this contribution, we point to the inconsistency in the proof of the lower

Research paper thumbnail of Experimental Test Infrastructure Suppporting IEEE 1149.4 Standard

Research paper thumbnail of A Practical Approach To Fault Localization In Crystal Oscillators

Research paper thumbnail of Model-Based Diagnosis Of Analog Circuits With CLP(R)

Research paper thumbnail of Implementation of linear histogram based ADC testing, a case study

Research paper thumbnail of System Level Diagnosis-A Comparison of Two Alternative Approaches

Research paper thumbnail of Design of an IEEE 1149.4 Test Chip with Extended ABM Functionality

Research paper thumbnail of Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity

Sensors

An electronic circuit for contactless detection of impedance changes in a tissue is presented. It... more An electronic circuit for contactless detection of impedance changes in a tissue is presented. It operates on the principle of resonant frequency change of the resonator having the observed tissue as a dielectric. The operating frequency reflects the tissue dielectric properties (i.e., the tissue composition and on the tissue physiological changes). The sensor operation was tested within a medical application by measuring the breathing of a patient, which was an easy detectable physiological process. The advantage over conventional contact bioimpedance measurement methods is that no direct contact between the resonator and the body is required. Furthermore, the sensor’s wide operating range, ability to adapt to a broad range of measured materials, fast response, low power consumption, and small outline dimensions enables applications not only in the medical sector, but also in other domains. This can be extended, for example, to food industry or production maintenance, where the obs...

Research paper thumbnail of Oscillation test structures of active RC filters

IEE Colloquium on Testing Mixed Signal Circuits and Systems

ABSTRACT

Research paper thumbnail of Sequential Diagnosis Tool For System Maintenance And Repair Orodje Za Sekvenno Diagnosticiranje Namenjeno Vzdrevanju In Popravilu Sistemov

ABSTRACT A general framework of the Sequential Diagnosis Tool that is currently under development... more ABSTRACT A general framework of the Sequential Diagnosis Tool that is currently under development in the Computer Systems Department at the Jo#ef Stefan Institute is presented in this paper. The tool can be used as an experimental environment for the analysis of solutions of the test sequencing problem. For example, changes of decision trees and their costs as a function of system failure data can be studied. The tool also represents the basis of system diagnosis software package for a system maintenance and repair. V #lanku je opisan splo#ni koncept orodja za sekven#no diagnosticiranje, ki ga razvijamo v Odseku za ra#unalni#ke sisteme na Institutu Jo#ef Stefan. Orodje lahko slu#i kot eksperimentalno okolje za analiziranje re#itev problema generiranja testnih sekvenc. Tako lahko na primer prou#ujemo spremembe odlo #itvenih dreves in njihovih cen v odvisnosti od podatkov o odpovedi sistema. Obenem je opisano orodje osnova programskega okolja za sekven#no diagnosticiranje v okviru si...

Research paper thumbnail of Finite-element model-based fault diagnosis, a case study of a ceramic pressure sensor structure

Microelectronics and Reliability, Dec 1, 2007

Research paper thumbnail of On system diagnosis for transient fault situations

Microprocessing and Microprogramming, 1988

Research paper thumbnail of Hardware Implementation of Aes Algorithm

Research paper thumbnail of Stimulus generation of a built-in self-test using oscillation based test structures

International Journal of Electronics, Nov 1, 2002

An oscillation based test method is a simple and in some cases quite efficient method for produci... more An oscillation based test method is a simple and in some cases quite efficient method for producing a go-no go test. In this approach, the circuit is transformed into an oscillator during the test mode and the frequency of oscillation is measured and compared to a reference value obtained on a known good circuit operating in the same conditions. The

Research paper thumbnail of On analog signature analysis

Design Automation and Test in Europe Conference and Exhibition 1999 Proceedings, 1999

Research paper thumbnail of A Methodology For Model-Based Diagnosis Of Analog Circuits

Research paper thumbnail of Modelling Dynamic Dependencies by Functional Database Model

ABSTRACT The database model CDM intended for modelling design objects is presented. All propertie... more ABSTRACT The database model CDM intended for modelling design objects is presented. All properties of the design object are modeled by means of functions. For modelling dynamic dependencies among objects we introduce the notion of dynamic function. The dynamic function comprises capabilities for the description of the object static structure and algorithmic dependencies among objects. Some constraints and practical problems in using dynamic functions in the domain of geometric modelling are identified.

Research paper thumbnail of On the diagnosing algorithm for networks

Http Dx Doi Org 10 1080 00207160008804918, Mar 19, 2007

Research paper thumbnail of Efficient go no-go test of active RC filters

International Journal of Circuit Theory and Applications, Sep 1, 1998

Research paper thumbnail of The Impact of Housing on the Characteristics of Ceramic Pressure Sensors—An Issue of Design for Manufacturability

Research paper thumbnail of On The Lower Bound Of Edge Guards Of Polyhedral Terrains

International Journal of Computer Mathematics, Sep 15, 2010

Guarding polyhedral terrains is a relatively new problem in computational geometry. It is known a... more Guarding polyhedral terrains is a relatively new problem in computational geometry. It is known as NP-hard problem. In 1997, P. Bose, T. Shermer, G. Toussaint and B. Zhu stated the bounds on the number of guards and proposed some algorithms for placing vertex and edge guards. In this contribution, we point to the inconsistency in the proof of the lower

Research paper thumbnail of Experimental Test Infrastructure Suppporting IEEE 1149.4 Standard

Research paper thumbnail of A Practical Approach To Fault Localization In Crystal Oscillators

Research paper thumbnail of Model-Based Diagnosis Of Analog Circuits With CLP(R)

Research paper thumbnail of Implementation of linear histogram based ADC testing, a case study

Research paper thumbnail of System Level Diagnosis-A Comparison of Two Alternative Approaches

Research paper thumbnail of Design of an IEEE 1149.4 Test Chip with Extended ABM Functionality

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