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Practical aspects of the applied impedance spectroscopy are considered. A concept and demonstrator for embeddable impedance spectroscopy device are discussed. The proposed concept is based on the use of simple binary signals as for excitation. Signal generation as well as later processing of response signals is handled inside single chip digital signal processor. Minimal amount of supporting circuitry...
The impedance analyzers are widely used to measure, test and validate the properties of the materials, tissues, electrical and electronics networks etc. To make simple power-and cost-efficient device for real-time dynamical measurements in the wide frequency range, special binary waveforms excitation signals can be used, covering the desired spectrum points. Drawback of the using of the binary measurement...
Reliable, standard-based networking is one of the key enablers for mobile and ubiquitous health monitoring. In particular, multi-hop IPv6-based wireless sensor body area network is one of the most attractive candidates for true internet of things in healthcare. This paper describes a proposal for a modular system comprising 6LoWPAN communication modules, optimized modules for application-specific...
Capacitive sensors are widely used, e.g. for measurement of humidity and various physical movement (proximity, linear or angular acceleration, speed or position) of some element in the environment or in the material or structure.
A measurement system has been developed and investigated to acquire and process the acceleration data, from the array of MEMS sensors, for the structural health monitoring applications. The current solutions includes up to 20 analog sensor boards, each with ADXL326 and ADXL377 MEMS type sensors (from Analog Device, with range of ±16g or ±200g), the data acquisition box USB-6259 (from National Instruments)...
Using of binary waveforms in the fast impedance spectroscopy of biological objects is discussed in the paper. There is shown that the energy of binary waveforms can be concentrated onto selected separate frequencies. We can optimize the binary excitation waveform depending on the shape of frequency response of the impedance under study to maximize the levels of signal components with certain selected...
TMS320F28335 (real-time digital signal processor of Delfino-family) is an ideal platform for developing of ultrasound (in the frequency range of up to 1 MHz) “almost-single-chip” piezosensor based measuring devices. Preliminary prototype of measurement sensor node, capable of measuring impedance spectra of the piezosensor, but also of sending and catching of the ultrasound measurement signal bursts...
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