Patent number: 12107873
Abstract: The invention discloses a blockchain-based intrusion detection system for railway signal, which is built on a blockchain's distributed chain structure, without a central, trusted control center. This design mitigates the vulnerabilities associated with centralized intrusion detection centers. Additionally, by utilizing a blockchain-based distributed structure, it also eliminates the risk of a single point of failure for the intrusion detection center. Moreover, the data within the blockchain-based intrusion detection system is highly resistant to malicious tampering. This is achieved by leveraging the consensus mechanism inherent in the blockchain, which can achieve consensus among intrusion detection nodes. The current invention solves the internal evil attacks and avoid the inability to reach consensus between nodes due to internal evil, thereby affecting the intrusion detection performance; at the same time, the intrusion detection model can resist external network attacks.
Type:
Grant
Filed:
December 30, 2023
Date of Patent:
October 1, 2024
Assignees:
Signal and Communication Research Institute, China Academy of Railway Sciences Corporation Ltd., China Academy of Railway Sciences Corporation Ltd., Beijing Huatie Information Technology Corporation Ltd., Beijing Ruichi Guotie ITS Eng. & Tech. Ltd.
Inventors:
Qichang Li, Ran Zhao, Bingyue Lin, Hua Zhang, Gang Li, Yingying Cui, Lin Wang, Deji Fu, Fei Wang, Zibiao Fu, Fei Wang, Yazhou Kou, Jiali Zhao, Qiang Gao, Xianfeng Luan, Hui Zhang, Gang Zhao, Shi Yan, Hao Chang, Chaoping Zhu, Zhenzhen Liu, Zhiduo Xie, Yong Yang, Yuan Ma, Qizheng Hu
Patent number: 12098096
Abstract: A low dielectric sealing glass powder for a miniature radio-frequency glass insulator is made of the following raw materials expressed in molar percentages: SiO2: 70.5-74.0%, B2O3: 20.5-23.5%, Ga2O3: 0.5-2.0%, P2O5: 0.25-2.0%, Li2O: 0.4-6.0%, K2O: 0.1-1.5%, LaB6: 0.05-1.0%, and NaCl: 0.03-0.3%. The raw material components are simple, and the preparation method is easy to implement. The dielectric constant and dielectric loss of the prepared glass powder are low, and the melting and molding temperature is low, which are convenient for large-scale industrial production. The melting and molding temperature of the low dielectric sealing glass powder ranges from 1320° C. to 1360° C., and the obtained glass has a dielectric constant ranging from 3.8 to 4.1 and a dielectric loss ranging from 4×10?4 to 10×10?4 at a frequency of 1 MHz, and a sealing temperature ranging from 900° C. to 950° C.
Type:
Grant
Filed:
April 24, 2022
Date of Patent:
September 24, 2024
Assignee:
CNBM RESEARCH INSTITUTE FOR ADVANCED GLASS MATERIALS GROUP CO., LTD.
Inventors:
Shou Peng, Chong Zhang, Weiwei Wang, Changqing Li, Jinwei Li, Xiaofei Yang, Gang Zhou, Zhenkun Ke, Xin Cao, Chuanli Shan, Jia Ni, Jiedong Cui, Fengyang Zhao, Zhaojin Zhong, Pingping Wang, Qiang Gao, Na Han, Lifen Shi, Yong Yang