The Design Of Storage Battery Failure And Battery Room Environment Monitoring System Based On STM32F103

The storage battery, as an independent power, has been widely used in various fields, such as uninterrupted power for banks and stock services, emergency power for tele-communications, railways, hospitals and other departments when electical power grid fails to work, and uninterrupted power for computer and network systems. Lead-acid storage battery is also an extremely important component of the DC power system of the power plants and transformer substations, which can provide the necessary power to the important equipment while system is breakdown, such as relay protection, automation equipments, the operation of equipments and emergency lighting. If a lead-acid storage battery is breakdown too, the severity of the consequences would be disastrous. From the health status to sub-health status and finally fail to work, the batteries will take some time. During this time it will show some features inevitably. In this paper, the author has designed a monitoring equipment which could discover the failure of batteries in time and made people handle it as quick as possible, which will improve the reliability of the direct current supply system. In the monitoring equipment, STM32F103MCU with ARM core is used as ARM core MCU has great advantages in functions, features and prices. The equipment is designed as modules to improve its reliability and maintainability. The monitoring data can be displayed, stored and upload. In this paper, the main composition of the cell circuit in the equipment is illustrated and the ways to make important circuits are discussed and compared. Also, how to select frequency of the sine wave generator which play a key role in the equipment and how to measure current rms are discussed, and detailed descriptions about the power amplification, the current injection measurement, the AC ripple voltage measurement and the AC ripple voltage measurement circuit and measuring procedures are given. The author looked up a large number of materials and element data manual, carefully selected the required components, especilly for important ones from different kinds of aspects, and discussed the failure mode of some components which will have significant impact on the equipment and the possible consequences resulted in.In this paper, a equipment to monitor battery failure and battery room environment is designed.This equipment can measure AC resistance and DC voltage of no more than128batteries on line. It can also measure the DC voltage and charge and discharge currents of batteries, and monitor battery room temperature, room relative-humidity and hydrogen content. The collected data can be processed, stored, and uploaded.In this paper, the designs of both monitoring equipment’s hardware and software are illustrated in detail, and the problems in debugging and related solutions are introduced. Also, the test of a real connection of the equipment and the battery is made. The test data are analyzed and described, and effect of use of the equipment is simply evaluated, The test results have reached the expect of design. The design of the monitoring equipment can improve the safety and efficiency of test.It also can reduce the risk of test.Finally, some deficiencies of the equipment are pointed out and some ideas to upgrade the equipment are proposed.