At present, the photoelectric conversion efficiency of DSC modules in a low-light environment (below 10,000 Lux/about 10% direct sunlight) is more than three times that of mainstream silicon solar technology, so it is quite suitable for low-light human activities. surroundings. The power generated by the self-powered module is captured by the power management chip and the maximum power is temporarily stored in the capacitor or rechargeable battery. The stored power can stably provide the sensor and the low-power WAN signal transmission chip module. energy consumption.