REAL-TIME SPATIAL PRECISE MAGNETIC POSITIONING APPARATUS, RAY IMAGING SYSTEM, AND REAL-TIME SPATIAL PRECISE MAGNETIC POSITIONING METHOD

摘要

A real-time spatial precise magnetic positioning apparatus, a ray imaging system, and a real-time spatial precise magnetic positioning method. The ray imaging system comprises a ray source, a beam limiting device, a flat panel detector, and a real-time spatial precise magnetic positioning apparatus. The magnetic positioning apparatus comprises a processor, a magnetic field generation apparatus and a magnetic sensor array, wherein the magnetic field generation apparatus and the beam limiting device are coaxially arranged; a plurality of magnetic sensors (4) of the magnetic sensor array are arranged on the flat panel detector in a distributed manner; the magnetic field generation apparatus at least comprises an alternating magnetic field generator (31) for generating an alternating magnetic field; the plurality of magnetic sensors (4) of the magnetic sensor array can independently measure a magnetic induction intensity, and can send data of the magnetic induction intensity, which is measured in real time, to the processor; and the processor determines the positional relationship between the beam limiting device and the flat panel detector according to the magnitude of the magnetic induction intensity measured by the magnetic sensors (4) in real time. Centimeter-level positioning precision in an indoor environment is realized; and the present invention is applicable to medical instruments and industrial control, and has a strong anti-interference capability.