Device for measuring the resonance frequency of string tensometric sensors with two-wire connection and automatic set-up

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00331632" target="_blank" >RIV/68407700:21230/19:00331632 - isvavai.cz</a>

Result on the web

<a href="https://data.epo.org/publication-server/pdf-document?pn=3076144&ki=B1&cc=EP&pd=20190605" target="_blank" >https://data.epo.org/publication-server/pdf-document?pn=3076144&ki=B1&cc=EP&pd=20190605</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Device for measuring the resonance frequency of string tensometric sensors with two-wire connection and automatic set-up

Original language description

The system works on the principle of measuring the damped oscillations of sensors with synchronized excitation. Excitation pulses are generated by a processor (12), which in response to the properties of the connected sensor (2) adjusts their amplitude, number, period and rate. The processor (12) also controls the entire behavior of the system, thus considerably enhancing its flexibility. Based on the measured excitation rate and the level of the induced voltage during tail oscillations of the sensor string, the processor (12) also sets the corresponding gain of a differential amplifier (4) and tunes a narrow-band amplifying SC filter (6). This allows to excite and identify vast range of various sensor types efficiently. An initial determination of the resonance frequency of the sensor (2) in the non-synchronized state is based on the spectral analysis of sensed impulse response of the sensor (2) performed by the processor (12). The exciter (1) of the system is enhanced with the current protection against a short circuit. Due to the bridge structure of the exciter (1) it is possible to excite the sensor (2) efficiently and use the subsequent an input amplifier of the induced voltage as a differential amplifier (4), which amplifies the useful induced signal while suppressing the common interference. ### The patent is exploited by its owner.

Czech name

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Czech description

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Type

P - Patent

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

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Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Patent/design ID

EP3076144

Publisher

EPO_1 -

Publisher name

European Patent Office

Place of publication

Munich, The Hague, Berlin, Vienna, Brussels

Publication country

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Date of acceptance

Jun 5, 2019

Owner name

České vysoké učení technické v Praze, 166 27 Praha 6 (CZ)

Method of use

A - Výsledek využívá pouze poskytovatel

Usage type

P - Využití výsledku jiným subjektem je v některých případech možné bez nabytí licence