&lt;title&gt;Accelerated aging and life tests of optical fibers&lt;/title&gt;

Berguiga, Lotfi; Lupi, Cyril; Hyon, Nicolas; Salomon, L.; Normand, Guy; Ny, R. Le; Tanguy, Éric; Leduc, Dominique; Auvray, M.-H.; Bizeul, Jean Claude; Gouronnec, Alain; Fornel, Frédérique de; Boisrobert, Christian; Poulain, M.; Poulain, Marcel

doi:10.1117/12.424384

Cited by 4 publications

(1 citation statement)

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“…This makes this type of fibers a suitable candidate for our research. Previous research also exists on the behavior of POF under mechanical stress used in sensor applications [14], and on accelerated life tests for telecommunication applications [15]. The conclusions of this body of work point to POF as an excellent candidate for the application of interest for our research, fast lead-acid battery chargers.…”

Section: Introductionmentioning

confidence: 92%

Density measurement into lead-acid batteries with multipoint optical fiber sensor

Marcos-Acevedo

Cao-Paz

Río-Vázquez

et al. 2009

2009 IEEE Intrumentation and Measurement Technology Conference

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There are numerous applications for the use of leadacid batteries: automotive applications, telecommunications, UPS, remote-area power-supply systems, etc. Modern energystorage applications require higher reliability than has been demanded in the past; in addition, systems have been developed for monitoring and managing the batteries so as to achieve duty in service. For determination of battery state, it is necessary to know the state of charge (SOC) and the state of health (SOH), one of the physical parameters with information about the SOC is the electrolyte density. An electrolyte density sensor must be able to measure the electrolyte density at different places because the battery-density varies with location. This paper presents a plastic optical fiber sensor developed for measuring in real time the electrolyte density into lead-acid batteries. The sensor measures the density at four different heights.The environment in the batteries that use an electrolyte with Sulfuric Acid (H 2 SO 4 ) at an elevated temperature during the use process is very hard and the accuracy of the density readout must be maintained through the useful life of the vehicle. We have done an accelerated test to check the reliability sensor. The test duration was over one calendar year (9,552 hours) using a sensor with four optical fibers. For the test, the electrolyte acid density was set to 35%, and the temperature to 70 degrees Celsius. An electronic system for emission and detection of light collected data periodically to assess the transmission loss in the fibers as they aged. In this paper we present the test results.

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Section: Introductionmentioning

confidence: 92%