Self-turn-off energy collection circuit started at low power and having voltage monitoring function

The invention discloses a self-turn-off energy collection circuit started at low power and having a voltage monitoring function, which reduces the energy collection starting power to 0.14 [mu]W and can significantly improve the sensitivity of energy collection. The self-turn-off energy collection circuit can be used for energy collection in environments with weak illumination, low vibration intensity, small temperature difference and the like, and is particularly suitable for a scene based on radio frequency energy collection; tests show that the minimum radio frequency input power capable ofoperating is-22dBm at 915MHz, and the space range of radio frequency energy collection can be effectively expanded; and meanwhile, a voltage monitoring function is added, so that normal power utilization of the system is ensured. 本发明公开了一种低功率启动并有电压监视功能的自关断能量收集电路，将能量收集启动功率降低到了0.14μW，能够显著提高能量收集的灵敏度；本发明可用于微弱光照、低振动强度、微小温差等环境中的能量收集，而且本发明尤其适用于基于射频能量收集的场景中；经试验，本发明能够运行的最小射频输入功率-22dBm@915MHz，能够有效扩展射频能量收集的空间范围；同时，通过增加电压监视功能，保证系统的用电正