Non-inductive piezoelectric energy collection circuit, energy collection method and zero cross detection circuit

• Main Authors: LIU XIAOKE, XU JIACHENG, PING QINGYUN, YAO JUN, LUO CONG, LI QIANYUAN, XIE ZHIWEI, QU SIZHUO, CHEN YANDONG
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a non-inductive piezoelectric energy collection circuit, an energy collection method and a zero-cross detection circuit. The non-inductive piezoelectric energy collection circuit comprises a charge overturning main circuit, the zero-cross detection circuit, a state judgment circuit, a pulse signal circuit and a pulse sequencing circuit, the beneficial effects of the invention are that when micro-electronic equipment is used to collect weak vibration energy in an environment, a simpler structure is adopted to improve and optimize an existing non-inductive energy collection technology based on a synchronous switch; a more accurate zero-cross detection circuit in a sampling resistor mode is adopted, so that the accuracy of the detection circuit is improved; a simple pulse signal circuit is designed by using fewer digital logic circuit elements, so that the system loss is reduced, the circuit work is more efficient, and the system volume is smaller. 本发明公开了一种无电感压电能量收集电路、能量收集方法及过零检测电路，包括电荷翻转