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This paper presents exemplary exercise on the fundamentals of signal processing course which is offered for second year bachelor level students. Application of Field Programmable Analog Array (FPAA) for pulse amplitude modulation (PAM) exercise is described with signal processing laboratory. There are presented two methods for implementing PAM modulation and demodulation technique in FPAA module....
The paper presents a method of obtaining short-term positioning accuracy based on micro electro-mechanical system (MEMS) sensors and analysis of the results. A high-accuracy and fast-positioning algorithm must be included due to the high risk of accidents in cities in the future, especially when autonomous objects are taken into account. High-level positioning systems should consider a number of sub-systems...
There is an increasing demand for indoor navigation and localization systems along with increasing popularity of location based services in last years. The paper presents our work in progress for locating indoor objects based on signal fusion. The location is based on two signals: RSSI (Received Signal Strength Indication) and video camera. This paper presents a vision-based system for human detection...
There is an increasing demand for indoor localization and tracking objects with high accuracy. The GPS system is not efficient for positioning in such areas. Rising number of smartphones allow for their utilization in indoor positioning system. RSSI (Radio Signal Strength Index) is commonly applied but it is limited to pattern matching methods. A map called fingerprint is created at the first stage...
The paper provides a case study on the wireless circuit for the purpose of the EGG (Electrogastrography) signal acquisition. The authors present an amplifier based on the ADS1298, wireless communication module (Bluetooth) and the microprocessor unit which have been recently built. The system is currently under examination but the outcome is very promising because the amplifier input is fed with the...
The nature of wireless communication protocols used in automotive industry (eg. TPMS - Tire Pressure Monitoring System, RKE Remote Key-less Entry or PEPS- Passive Entry & Passive Start) and fact, that transmission between remote sensor and main controller has to be received and correctly decoded, require sophisticated receiver systems. Complexity of systems installed in modern vehicles and variety...
This article presents maximisation of components tolerance together with finding optimal frequency of a periodic excitation in fault diagnosis of analogue electronic circuits. Addi-tionally classical two-stage “detection → location” diagnosis se-quence is merged into single step in order to reduce test time. Presented optimisation problems are solved by means of a ge-netic algorithm.
The paper presents new hybrid procedure for analog circuit fault clustering with the use of simulated annealing and self-organizing neural network. Main goal of the method is to find best PWL excitation under maximum diagnosability of the circuit. Optimization is done with simulated annealing. For each node in the optimization the goal function ranks how well a neural network performs in the classification...
This paper presents the method of an analog functional testing which applies a non-periodic responses analyzing during the testing stage. The difference of energy levels for responses obtained to a pair of optimized stimuli was engaged to a circuit state determination. The proposed testing excitations have multi-band spectra of amplitude densities and they are specialized for investigation of assumed...
A new test method using multidimensional search space (TMMSS) for analog electronic circuits is presented. During test mode the circuit under test is connected to active N-terminal network. The structure and values of elements of this network is selected (by heuristic particle swarm optimization algorithm) in way that the best localization/identification of faults is obtained. The differences between...
This paper describes the technique dedicated to an analog integrated circuit testing by means of supply current monitoring. The minimal set of test points, that allows to achieve the highest possible fault coverage, is determined with the use of genetic algorithm. Thanks to the proposed dynamic scheme of phenotype coding, the optimization process is more efficient than for a standard, static genotype...
Design for Manufacturability and Yield is one of the most important concepts in analogue integrated circuits manufacturing. The process of adjusting the nominal values of circuit parameters allows for partial immunisation of its performance against deviations in value of the circuit's parameters. This paper proposes the use of an evolutionary tool, the genetic algorithm, for design centring. The process...
The paper describes one exercise (QRS detector) in the signal processing laboratory which are performed by biomedical engineering students. The QRS detector is built in the FPAA and the students can analyze the influence of the following blocks (band pass filter, rectifier, threshold circuit and comparator) on the final result. A single FPAA board, an oscilloscope and PC are utilized for the exercise...
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