A Multi-Point Sensor Based on Optical Fiber for the Measurement of Electrolyte Density in Lead-Acid Batteries

作者：Cao Paz Ana M^*; Marcos Acevedo Jorge; del Rio Vazquez Alfredo; Martinez Penalver Carlos; Lago Ferreiro Alfonso; Nogueiras Melendez Andres A; Doval Gandoy Jesus

来源：Sensors, 2010, 10(4): 2587-2608.

DOI：10.3390/s100402587

• plastic optical fiber
• bending losses
• electrolyte density
• liquid level
• lead acid batteries
• state of charge
• battery maintenance

This article describes a multi-point optical fiber-based sensor for the measurement of electrolyte density in lead-acid batteries. It is known that the battery charging process creates stratification, due to the different densities of sulphuric acid and water. In order to study this process, density measurements should be obtained at different depths. The sensor we describe in this paper, unlike traditional sensors, consists of several measurement points, allowing density measurements at different depths inside the battery. The obtained set of measurements helps in determining the charge (SoC) and state of health (SoH) of the battery.

• 出版日期2010-4