Design and development of a lightning counter for metallic structures to register the maximum value of the lightning current.

摘要

The aim of this study is to measure the current peak value of a lightning in struck metallic structures, in this paper the design and development of a lightning counter is described using Rogowski coil for current measure and Arduinos. The design of the device consists of three parts, a Rogowski coil as sensor, two Arduinos for storage and a PCB for the union between the sensor and the Arduino. The geometrical parameters from a Rogowski coil are the base from which the electrical parameters are calculated, those were used to obtain the frequency response of the sensor and the sensibility. The Arduinos were coded to analyze, store and show the measurements. Both work independent from each other, using one to collect the data from the sensor, calculate the data obtained and send the maximum current value of a lightning to the other Arduino, who stores the data and shows them in a LCD Display. The PCB is designed to reduce and filter the signals from the Rogowski coil. The Lightning counter was tested using reduced lightning impulses to test the precision and the sample speed of the device.