Passive daytime radiative cooling (PDRC) can cool down objects by simultaneously reflecting sunlight and radiating heat to the cold external space, which has no energy consumption. Traditional PDRC design usually needs to rely on micro-nano structures, which are easily damaged and lose function. On the one hand, the mechanical strength of PDRC can be enhanced. On the other hand, by integrating self-monitoring character in the same membrane fault part can be easily distinguished for fixing or replacing. Monitoring the damage by using traditional sensors will cause additional energy loss. Therefore, an intelligent PDRC that can monitor the failure itself is urgently needed to be developed. Here we found that the polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) nanofiber membrane obtained by electrospinning technology can effectively scatter sunlight, while emitting infrared rays matching the atmospheric window to achieve effective heat dissipation. In the preparation process, the electrostatic field can effectively polarize the PVDF-HFP to obtain good piezoelectric performance, which can be used to monitoring the integrity of membrane function. Meanwhile, the membrane can be used as a nanogenerator to collect mechanical energy in the environment, such as raindrop energy when used on the roof, thereby not only reducing cooling energy loss, but also collecting energy additionally, achieving a dual energy-saving design. Its excellent self-cleaning and recyclable characteristic bring more benefits to its green and energy-saving features. Therefore, this intelligent PDRC provides ideas for new energy-saving designs. At the same time, a simple preparation method is more conducive to the promotion of this technology.

日间被动辐射冷却（PDRC）可以通过同时反射太阳光并将热量散发到寒冷的外部空间来冷却物体，从而降低了能耗。传统的PDRC设计通常需要依靠微纳米结构，这种结构很容易损坏并失去功能。一方面，可以提高PDRC的机械强度。另一方面，通过在同一膜故障部位集成自我监测特性，可以容易地区分固定或更换部位。使用传统传感器监控损坏会导致额外的能量损失。因此，迫切需要开发能够监视故障本身的智能PDRC。在这里，我们发现通过静电纺丝技术获得的聚偏二氟乙烯-六氟丙烯共聚物（PVDF-HFP）纳米纤维膜可以有效地散射阳光，同时发出与大气窗口匹配的红外线以实现有效的散热。在制备过程中，静电场可有效极化PVDF-HFP以获得良好的压电性能，可用于监测膜功能的完整性。同时，该膜可用作纳米发电机，用于收集环境中的机械能，例如在屋顶上使用时的雨滴能，从而不仅减少了冷却能的损失，而且还收集了能，实现了双重节能设计。其出色的自清洁和可循环利用特性为其绿色节能功能带来更多好处。因此，这种智能PDRC为新的节能设计提供了思路。同时，简单的制备方法更有利于该技术的推广。