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A wireless interface for replacing the cables in bridge-sensor applications.

Pavlin M, Novak F - Sensors (Basel) (2012)

Bottom Line: In this approach, the concept of reciprocal topology is employed, where the transmitter side acquires signals with its own transfer function and the receiver side reconstructs them with the transfer function reciprocal to the transmitter transfer function.The performance was evaluated with a dedicated data-acquisition system and finally, the test results were analyzed.The two different sets of results indicated the high level of amplitude and the temporal accuracy of the wirelessly transferred sensor signals.

View Article: PubMed Central - PubMed

Affiliation: In.Medica d.o.o., Levicnikova 34, 8310 Sentjernej, Slovenia. marko.pavlin@inmedica.si

ABSTRACT
This paper presents a solution in which a wireless interface is employed to replace the cables in bridge-sensor measurement applications. The most noticeable feature of the presented approach is the fact that the wireless interface simply replaces the cables without any additional hardware modification to the existing system. In this approach, the concept of reciprocal topology is employed, where the transmitter side acquires signals with its own transfer function and the receiver side reconstructs them with the transfer function reciprocal to the transmitter transfer function. In this paper the principle of data acquisition and reconstruction is described together with the implementation details of the signal transfer from the sensor to the signal-monitoring equipment. The wireless data communication was investigated and proprietary data-reduction methods were developed. The proposed methods and algorithms were implemented using two different wireless technologies. The performance was evaluated with a dedicated data-acquisition system and finally, the test results were analyzed. The two different sets of results indicated the high level of amplitude and the temporal accuracy of the wirelessly transferred sensor signals.

No MeSH data available.


Signals captured at the lower level of the experiment.
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f10-sensors-12-10014: Signals captured at the lower level of the experiment.

Mentions: As shown in Figure 10, the signal pR is delayed after the signal pT. The wireless-data connection is not ideal; it exhibits some error in the time and the amplitude. In addition, the delay time and the amplitude error between the signals may change over time [18]. The main reason for the time-delay variability is the difference in the internal clocks between the transmitter and the receiver unit (Figure 10). The amplitude error is caused by component tolerances in the transmitter acquisition and receiver reconstruction circuits.


A wireless interface for replacing the cables in bridge-sensor applications.

Pavlin M, Novak F - Sensors (Basel) (2012)

Signals captured at the lower level of the experiment.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472813&req=5

f10-sensors-12-10014: Signals captured at the lower level of the experiment.
Mentions: As shown in Figure 10, the signal pR is delayed after the signal pT. The wireless-data connection is not ideal; it exhibits some error in the time and the amplitude. In addition, the delay time and the amplitude error between the signals may change over time [18]. The main reason for the time-delay variability is the difference in the internal clocks between the transmitter and the receiver unit (Figure 10). The amplitude error is caused by component tolerances in the transmitter acquisition and receiver reconstruction circuits.

Bottom Line: In this approach, the concept of reciprocal topology is employed, where the transmitter side acquires signals with its own transfer function and the receiver side reconstructs them with the transfer function reciprocal to the transmitter transfer function.The performance was evaluated with a dedicated data-acquisition system and finally, the test results were analyzed.The two different sets of results indicated the high level of amplitude and the temporal accuracy of the wirelessly transferred sensor signals.

View Article: PubMed Central - PubMed

Affiliation: In.Medica d.o.o., Levicnikova 34, 8310 Sentjernej, Slovenia. marko.pavlin@inmedica.si

ABSTRACT
This paper presents a solution in which a wireless interface is employed to replace the cables in bridge-sensor measurement applications. The most noticeable feature of the presented approach is the fact that the wireless interface simply replaces the cables without any additional hardware modification to the existing system. In this approach, the concept of reciprocal topology is employed, where the transmitter side acquires signals with its own transfer function and the receiver side reconstructs them with the transfer function reciprocal to the transmitter transfer function. In this paper the principle of data acquisition and reconstruction is described together with the implementation details of the signal transfer from the sensor to the signal-monitoring equipment. The wireless data communication was investigated and proprietary data-reduction methods were developed. The proposed methods and algorithms were implemented using two different wireless technologies. The performance was evaluated with a dedicated data-acquisition system and finally, the test results were analyzed. The two different sets of results indicated the high level of amplitude and the temporal accuracy of the wirelessly transferred sensor signals.

No MeSH data available.