公开(公告)号：EP0530596A1

公开(公告)日：1993-03-10

申请号：EP92114180.0

申请日：1992-08-20

Applicant: BIOMAGNETIC TECHNOLOGIES, INC.

Inventor： Buchanan, Scott D. ,  Riley, Scott

IPC: A61B5/04 ,  A61B6/08

CPC classification number: A61B5/04005 ,  A61B6/08

Abstract: An apparatus (10) for making magnetic measurements of the human body (12) includes a biomagnetometer (18) having a magnetic field sensing coil (20) that measures magnetic fields arising from a selected portion (14) of a body (12). A position monitor (40) used in conjunction with the biomagnetometer (18) produces no magnetic fields that can interfere with the taking of magnetic field measurements, and can operate simultaneously with the taking of magnetic field measurements. The position monitor (40) includes an optical target (42) mounted on the selected portion (14) of the body (12), the optical target (42) having a variation in light reflectance across the target (42). An input optical guide (50) directs a beam of light at the target (42), an output optical guide (52) collects a reflected beam of light from the target (42), and a limit detector (66) receives the beam of light from the output optical guide (52) and determines whether the intensity of the received light varies outside of predetermined limits.

Abstract translation: 一种用于进行人体（12）的磁测量的装置（10）包括具有测量从身体（12）的选定部分（14）产生的磁场的磁场感测线圈（20）的生物计量器（18）。 与生物计量器（18）一起使用的位置监视器（40）不产生可能干扰磁场测量的磁场，并且可以与采取磁场测量同时进行操作。 位置监视器（40）包括安装在主体（12）的选定部分（14）上的光学目标（42），光学目标（42）具有穿过目标（42）的光反射率变化。 输入光导（50）引导目标（42）上的光束，输出光导（52）收集来自目标（42）的反射光束，并且限位检测器（66）接收 来自输出光导（52）的光，并确定接收光的强度是否在预定极限之外变化。