Lightning strike alarm system using bipolar conventional air terminal

A lightning strike system alarm using a Bipolar Conventional Air Terminal (BCAT) comprising:

• a sensor electrically connected to a rod element electrified by a ground charge and an electrification plate-cone or an electrification plate-tube electrified by a thunderstorm cloud, and configured to measure electric energy induced in the electrification plate-cone or the electrification plate-tube by the thunderstorm cloud;
• and
• a controller configured to determine that the thunderstorm cloud has approached when the electrical energy measured by the sensor is greater than a reference energy set in advance;
• and
• an alarm device configured to output an alarm signal, based on a result of determining that the thunderstorm cloud has approached,
• wherein the sensor comprises:
• a luminescence unit, including a voltage stabilizer preventing induction of a high voltage due to the thunderstorm cloud, configured to emit light by the electric energy;
• and
• a light receiver configured to receive the light emitted from the luminescence unit, convert the light to electric energy, and transfer the electric energy to the controller.