Magnetometer used for cardiac magnetic field measurement and based on nitrogen-vacancy (NV) centers in diamond, and cardiac magnetic field measurement system

US11678826B2 · kind B2 · utility

Assignee

• NORTH UNIVERSITY OF CHINA · CN

Inventors

• Zongmin Ma · Taiyuan, CN
• Jun Liu · Shanghai, CN
• Li Qin · Lo Wu, CN
• Xiaoming Zhang · Beijing, CN
• Doudou Zheng · Taiyuan, CN
• Yunbo Shi · Taiyuan, CN
• Jun Tang · Beijing, CN
• Hao Guo · Taiyuan, CN
• Xiaocheng Wang · Shandong, CN

Key dates

• Filing date: May 22, 2021
• Grant date: Jun 20, 2023
• Expiry date: Feb 1, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A90/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present disclosure provides a cuboid magnetometer with high fluorescence collection efficiency, used for cardiac magnetic field measurement, and based on nitrogen-vacancy (NV) centers in diamond, and a cardiac magnetic field measurement system. The cardiac magnetic field measurement system includes a magnetic shielding chamber, a non-magnetic bed, an array probe for cardiac magnetic field measurement, a three-axis displacement platform, a high-speed data collection card, a fiber laser source, a microwave source, and a computer. The array probe for cardiac magnetic field measurement includes a non-magnetic shell, a stepping motor, a porous rotary fiber coupling apparatus, a fiber bundle set, a special photodetector (PD) set, a filter set, a ring-shaped antenna, and special diamond.