公开(公告)号：US3925668A

公开(公告)日：1975-12-09

申请号：US45431874

申请日：1974-03-25

Applicant: F S INC

Inventor： ANDERSON NORMAN C ,  RUPERT ROBERT E

IPC: G01J1/36 ,  G01J1/04

CPC classification number: G01J1/36

Abstract: A spectral sensor operating with a radiation sensitive detector employs a pulsed signal. A chopper is interposed in the radiation path comprising a needle of a moving needle meter whose needle is restrained at its tip. An alternating current applied to its coil causes the needle to vibrate, alternately exposing and blocking the detector. The sensor is low cost, and sensitive enough to respond to a temperature differential between a normal area and an inflamed area of a human body. Operating ranges can be varied by adjustment of electrical circuits or by interchangeable filters.

Abstract translation: 用辐射敏感检测器操作的光谱传感器采用脉冲信号。 在包括针头在其尖端处被限制的移动针计数器的针的辐射路径中插入有斩波器。 施加到其线圈的交流电导致针头振动，交替地暴露和阻挡检测器。 该传感器成本低廉，并且足够敏感以响应正常区域和人体发炎区域之间的温差。 工作范围可以通过调整电路或可互换的过滤器来改变。