US 12,009,858 B2
Multi-sensor data fusion-based self-powered online monitoring system for transmission line
Yongfu Li, Chongqing (CN); Xiping Jiang, Chongqing (CN); Xingzhe Hou, Chongqing (CN); Qian Wang, Chongqing (CN); Yingkai Long, Chongqing (CN); Qiang Yao, Chongqing (CN); Siquan Li, Chongqing (CN); Xiaoxiao Luo, Chongqing (CN); Yuxiang Liao, Chongqing (CN); Haibing Zhang, Chongqing (CN); Jiankang Bao, Chongqing (CN); and Haitao Wu, Chongqing (CN)
Assigned to State Grid Chongqing Electric Power Co. Electric Power Research Institute, Chongqing (CN); and State Grid Corporation of China, Beijing (CN)
Appl. No. 17/610,695
Filed by State Grid Chongqing Electric Power Co. Electric Power Research Institute, Chongqing (CN); and State Grid Corporation of China, Beijing (CN)
PCT Filed Aug. 24, 2021, PCT No. PCT/CN2021/114404
§ 371(c)(1), (2) Date Nov. 11, 2021,
PCT Pub. No. WO2022/252408, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 202110608970.X (CN), filed on Jun. 1, 2021.
Prior Publication US 2024/0039631 A1, Feb. 1, 2024
Int. Cl. H04B 10/11 (2013.01); H02N 99/00 (2006.01); H04B 10/50 (2013.01); H04B 10/80 (2013.01)
CPC H04B 10/11 (2013.01) [H02N 99/00 (2013.01); H04B 10/50 (2013.01); H04B 10/502 (2013.01); H04B 10/806 (2013.01); H04B 10/808 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A multi-sensor data fusion-based self-powered online monitoring system for a transmission line, comprising at least one detection node, an optical communication receiving and demodulation module, and a data processing module, wherein the detection nodes each comprise a vibration energy harvesting module, a sensing module, and an optical communication modulation and transmitting module;
the vibration energy harvesting module is configured to harvest vibration energy and convert it into electric energy for storage, to supply power to the detection node;
the sensing module is configured to acquire a plurality of types of sensing data at a position of the detection node;
the optical communication modulation and transmitting module is configured to modulate the plurality of types of sensing data acquired by the sensing module into an optical signal and radiate the optical signal into the air;
the optical communication receiving and demodulation module is configured to acquire the optical signal radiated into the air, perform optoelectronic conversion and demodulation on the acquired optical signal, and send demodulated data to the data processing module; and
the data processing module is configured to use a weighted least square method to fuse each type of sensing data to obtain a first fusion parameter corresponding to each type of sensing data;
and use a fuzzy comprehensive evaluation method to analyze the first fusion parameter to obtain a monitoring result;
wherein the vibration energy harvesting module adopts a vertical contact-separation mode triboelectric nanogenerator (TENG) to harvest the vibration energy;
wherein the vibration energy harvesting module comprises the TENG and an electric energy management unit (3), the electric energy management unit (3) comprises a rectifier bridge and a filter circuit, an output terminal of the TENG is connected to the rectifier bridge, the rectifier bridge is connected to the filter circuit, and charges are input to the filter circuit for rectification.