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An improved real-time method for smoke detection based on motion and color analysis is presented. Smoke detection in video surveillance is very important for early fire detection. In general, it is assumed that smoke is a low frequency signal, which may smooth the background. However, these conditions can be met by some pure-color objects, and smoke also produces high frequency signal on the edges...
In this paper, a variable gain amplifier designed in 130 nm CMOS technology is presented. The proposed amplifier is based on the bulk-driven approach, which brings a possibility to operate with low supply voltage (i.e. 0.6 V). Since the supply voltage of only 0.6 V is used for the amplifier to operate, there is no latchup risk that usually represents the main drawback of the bulk-diven approach. As...
An alternative method of fault simulation is presented in this paper. The proposed method is based on impedance calculations in the circuit under test. Calculation time and other properties of the method are addressed and evaluated. Possible application and results evaluation are demonstrated on an experimental circuit. This method could improve the test development time and quality.
This paper presents a novel concept of a smart wall outlet for intelligent home power metering systems. Smart functionality of the proposed metering plug is defined by its capability of power consumption measurement and wireless data transfer using an integrated Bluetooth Low Energy transceiver. Moreover, the device authentication and data security are enhanced by utilization of a HW secure element...
A new multi-protocol wireless measurement system applicable for smart households is presented in this paper. The system is based on a multi-standard wireless concept that by employing so-called RF network combiner can offer the interoperability of several protocols/networks. The main goal is monitoring several different parameters and processes by utilizing a multiplex oriented management software...
A novel impedance fault simulations methodology is presented in this paper. This methodology is based on an equation that calculates two-point impedance using the eigenvalues and eigenvectors of the circuit's nodal admittance matrix. This approach is applicable to active and passive circuits in both DC and AC domains. Possible applications of the proposed methods in the design of integrated circuits...
This paper deals with application of a feed-forward neural network for the production test of miniature antennas, where different 6-wire antennas with a ferrite core were tested. These devices under test were driven by a MOS H-bridge integrated in a dedicated ASIC controlled by non-overlapping clock signals. Tested devices were measured and seven significant parameters were evaluated and classified...
A novel resistance calculation method based on eigen calculus of the circuit's nodal admittance matrix is described and evaluated in this paper. More specifically, the calculation time efficiency of the method is examined and comparison to the traditional LU factorization based method is made. This evaluation is based on real and complex matrices that are both symmetrical and non-symmetrical as well...
This paper presents a novel wireless communication approach to modern households. A multi-standard wireless system concept for controlling and monitoring smart buildings is described. The goal of this paper is to point out the main issues regarding commonly used various home electronic systems, which leads to system complexity. Moreover, in the paper are presented solutions for the unification and...
The paper deals with the dynamic supply current testing (IDDT) of SRAM cells and arrays. An IDDT current sensor and sensing method are presented and explained. The effects of leakage current and static current consumption on the monitoring technique and efficiency are also discussed. The efficiency of the proposed test in unveiling weak open defects is demonstrated through simulations carried out...
This paper presents a numerical approach to DC fault analysis of analog circuits that improves the total computational time and reduces the total complexity of such analysis. The reduction is achieved by utilization of calculus that can substitute conventional simulations and thus, significantly reducing computational time. A detailed description of the approach including its mathematical background...
This paper deals with the comparison of the fault coverage of catastrophic faults in active analog integrated filter obtained by the measurement of filter parameters and by the Oscillation-based Built-In Self Test (OBIST) approach. In our experiment, firstly, the cut-off frequency, ripple in the pass band, DC gain in pass band and group delay of the filters have been monitored in the operating mode...
Dynamic supply current test method (IDDT test) in static random access memory (SRAM) cell arrays is addressed in order to unveil weak open defects. Simulations were carried out on a 64-bit SRAM circuit, where several parameters of the IDDT waveform were monitored. The SRAM circuit was designed in a 90 nm CMOS technology. Efficiency of IDDT test in unveiling open defects was evaluated and the achieved...
This paper deals with the investigation of the fault detection in separated parts of a mixed-signal integrated circuit example by implementing parametric test methods. The experimental Circuit Under Test (CUT) consisting of an 8-bit binary-weighted R-2R ladder D/A converter and additional on-chip test hardware was designed in a standard 0.35µm CMOS technology. For detection of catastrophic and parametric...
A new strategy for Oscillation-based Built-In Self Test (OBIST) of active analog filters, applicable for either a whole chip or a part of complex analog and mixed-signal systems, is described. In the test mode, a Circuit Under Test (CUT) is transformed to an oscillator, and the oscillation frequency is then compared to a reference frequency. In our approach, the reference frequency is given by the...
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