Analysis of energy consumption characteristics of bluetooth low energy module

Coal mine electrical equipments can realize bluetooth communication function of low power consumption by integrating bluetooth low energy module(BLE). However, in the process of integrated design, power protection circuit and battery capacity should be designed according to energy consumption characteristics of BLE module. For the problem, under different power supply voltage and radio frequency power, high-side current monitoring chip ZXCT1010 was adopted to analyze energy consumption characteristics of BLE module under different working states such as reset, initialization, broadcasting and connection. The results indicate that energy consumption of BLE module in radio frequency(RF) transceiving is high, and RF transceiving duration is short, while energy consumption of BLE module in RF static state is low, and RF static state duration is long. Energy consumption of BLE module is less affected by change of RF power, but is greatly affected by change of power supply voltage. The higher the power supply voltage is, the higher the working current and energy consumption of BLE module in each running state will be. Therefore, suitable power supply voltage should be provided and RF power should not be limited in integration application of BLE module.