公开(公告)号：US3928843A

公开(公告)日：1975-12-23

申请号：US48278374

申请日：1974-06-24

Applicant: OPTICAL COATING LABORATORY INC

Inventor： SPROUT JAMES COLE ,  BERMAN HERBERT L

IPC: H01H47/24 ,  G01J5/20 ,  G08B13/18 ,  G08B13/19

CPC classification number: G01J5/20 ,  G08B13/19 ,  Y10S250/01

Abstract: An infrared intrusion alarm system utilizes two sensing elements and two signal processing channels arranged such that an intruder produces signals of opposite polarities in the two channels. An alarm signal is delivered only in the event that the two signals of opposite polarities are present simultaneously. Disturbances, such as component noise, which affect only one channel cannot give rise to an alarm, nor can power supply disturbances which produce signals of the same polarity in both channels.

Abstract translation: 红外入侵报警系统利用两个感测元件和两个信号处理通道，这两个信号处理通道被布置成使得入侵者在两个通道中产生相反极性的信号。 只有在相反极性的两个信号同时存在的情况下才报告信号。 仅影响一个通道的干扰，例如元件噪声，不会引起报警，也不会在两个通道中产生相同极性信号的电源干扰。

公开(公告)号：US3703718A

公开(公告)日：1972-11-21

申请号：US10466771

申请日：1971-01-07

Applicant: OPTICAL COATING LABORATORY INC

Inventor： BERMAN HERBERT L

IPC: G08B13/19 ,  H01J39/00

CPC classification number: G08B13/19 ,  Y10S250/01

Abstract: Infrared intrusion detector system utilizing a single sensing element and optical means for focusing radiation from one or more discrete fields of view onto the sensing element. An amplifier tuned to have a frequency response corresponding to the walking speed of an intruder amplifies the signal from the sensing element and provides means for discriminating between changes in infrared radiation due to the presence of an intruder and gradual temperature changes such as room or ambient changes.

Abstract translation: 使用单个感测元件的红外入侵检测器系统和用于将来自一个或多个离散视场的辐射聚焦到感测元件上的光学装置。 调整为具有对应于入侵者的步行速度的频率响应的放大器放大来自感测元件的信号，并提供用于鉴别由于入侵者的存在而引起的红外辐射的变化和逐渐变化的温度变化（例如房间或环境变化）的装置 。