Surplus electric quantity online examination system of Lead-acid battery based on ARM

The lead-acid battery is widespread used in automobile, electric power and so on, but how to examine its surplus electric quantity accurately specially online surveys is a examines in the domain key question. So it has very extremely vital significance to design a practical lead-acid battery surplus electric quantity of online examination system. This article has designed a new kind of fiber sensor based on the light return principle. The principle is the receive of the luminous energy size and the electrolyte density will relate, and get battery surplus electric quantity by survey its density change on which we get the system. The system is including the optical fiber sensor, the photo electricity transforms, signal enlargement and ARM embedded system. And this system has realized the lead-acid battery electric quantity online examination. The experimental result indicated that this sensor and the online examination system able to realize the lead-acid battery electric quantity online examination, and it has many merits such as the structure simply, the survey accurate, the response keen, the service life long and so on. This system can become one kind of new lead-acid battery after the improvement, and it could be widely applies in automobile, electric power and so on.