Surface Acoustic Wave Vibration Sensors for Linear Electronic Warning Systems

Filipiak, J.; Solarz, Lech; Steczko, G.

doi:10.12693/aphyspola.116.302

Cited by 7 publications

(9 citation statements)

References 10 publications

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“…These SAW-based sensors are used to measure a number of physical quantities: gas concentration [5][6][7][8], temperature, pressure [9][10][11][12][13], and mechanical quantities: torque of a rotating shaft [14], stress [15][16][17], acceleration [18][19] and vibrations [20][21]. All these SAW-based sensors work on the basis of measuring changes in the delay of a surface wave due to the impact of a physical quantity being measured on its speed and the propagation path.…”

Section: Figurementioning

confidence: 99%

“…Thus the signal from every sensor passing thru a set of filters at the phase detector inlet can be separated. The system operation is discussed further in the following works [35] [36]. The said system required SAW-based vibration sensors having parameters given in the Table 2; the authors prepared these sensors.…”

Section: Measurements Of Vibration Sensor Parametersmentioning

confidence: 99%

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Seismic Vibration Sensor with Acoustic Surface Wave

Filipiak¹,

Steczko²

2013

Modeling and Measurement Methods for Acoustic Waves and for Acoustic Microdevices

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Section: Figurementioning

confidence: 99%

Section: Measurements Of Vibration Sensor Parametersmentioning

confidence: 99%

Seismic Vibration Sensor with Acoustic Surface Wave

Filipiak¹,

Steczko²

2013

Modeling and Measurement Methods for Acoustic Waves and for Acoustic Microdevices

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“…It is able to detect presence of intruder in close of the SAW-VS surrounding. The most important part of the system is the SAW-VS [1] and its schematic diagram is shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

“…As was shown in Refs. [1][2][3] the SAW-VS has only one normal frequency and it is dependent on its geometry. This allows us identifying any SAW-VS in a system and immediate thread localization.…”

Section: Introductionmentioning

confidence: 99%

Electronic Warning System Based on Surface Acoustic Wave Vibration Sensors

2011

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In the paper feasibility analysis of the surface acoustic wave based electronic warning system was presented. As a transducer in the system the surface acoustic wave delay line was proposed. It is fabricated in standard single mask process as a pair of interdigital transducers placed on the top of piezoelectric crystal substrate. Transducer is a plate with rectangular cross-section and it converts all environmental vibration to electric signal. From electronic point of view it was considered as a two-port network. Necessary condition for proper sensor operation is that the input signal frequency from external generator should be close to central frequency of delay line. Principle of operation of the sensor is that the measured phase shift of high frequency signal has frequency equal resonant frequency of vibrating plate and its amplitude is proportional to vibration amplitude of transducer. The environmental vibrations are defined by amplitude of the output signal and the threat location is pointed by resonant frequency of excited transducer. The described above principles of sensor operation allow us designing electronic warning system consisting of many sensors with different resonant frequencies of transducers. Output signals from precisely located sensors contain all necessary information about the whole warning system. This information is easy to transmit and detect by simple electronic circuits based on phase detector and proper data acquisition system, for which necessary conditions are presented.

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“…Frequency of phase change will be equal to vibration frequency of the sensor plate. The sensor plate must have one natural vibration frequency [8]. The amplitude of high frequency signal phase changes will be proportional to the amplitude of vibrations of the sensor plate.…”

Section: Introductionmentioning

confidence: 99%

Surface Acoustic Wave Vibration Sensor Electronic System

2011

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The paper presents surface acoustic wave vibration sensor electronic system. The system cooperates with surface acoustic wave delay line. The sensor has been designed for electronic warning systems. The sensor is a four-terminal network. In the system, there is a cascade connection of sensors by means of coaxial cable. Test signal and constant supply voltage are jointly sent between sensors. Separating the signals, their summation and amplification of test signal as well as matching the line to impedance 50 Ω are performed by surface acoustic wave vibration sensor electronic system. The electronic system devices and the making of them are discussed. System development of such a sensor is presented and its design is analysed. Experimental examination results of surface acoustic wave vibration sensor are presented. Parasitic effects occurring in vibration sensor electronic system operation connected with electromagnetic coupling and ground current coupling are discussed.

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Surface Acoustic Wave Vibration Sensors for Linear Electronic Warning Systems

Cited by 7 publications

References 10 publications

Seismic Vibration Sensor with Acoustic Surface Wave

Seismic Vibration Sensor with Acoustic Surface Wave

Electronic Warning System Based on Surface Acoustic Wave Vibration Sensors

Surface Acoustic Wave Vibration Sensor Electronic System

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