公开(公告)号：US20030052780A1

公开(公告)日：2003-03-20

申请号：US10033536

申请日：2001-11-01

Applicant: HONEYWELL, INC.

Inventor： Mark C. Buckley

IPC: G08B013/08

CPC classification number: G08B13/08 ,  G08B29/046 ,  H01H36/0046

Abstract: A tamper resistant magnetic contact switch apparatus for alarm systems that has a plurality of magnetic reed switches configured in a logic circuit and a magnetic pack for actuation. A magnetic shield disposed around the switches defines an actuation zone. In combination with the magnetic shield preventing magnetic fields from reaching the switches from locations outside the actuation zone, the magnet pack activates two of the five switches when positioned within the actuation zone to complete the logic circuit. The magnet pack does not, however, activate any of the other switches. If any of the other three switches are activated, or if either of the two activated switches are deactivated, the logic circuit is broken and the alarm circuit is activated.

Abstract translation: 一种用于报警系统的防篡改磁接触开关装置，其具有配置在逻辑电路中的多个磁簧开关和用于致动的磁性组件。 设置在开关周围的磁屏蔽限定了致动区。 与磁屏蔽结合防止磁场从致动区域外的位置到达开关，磁体组件在定位在致动区域内时激活五个开关中的两个，以完成逻辑电路。 然而，磁体包不会激活任何其他开关。 如果其他三个开关中的任何一个被激活，或者如果两个激活的开关中的任何一个被禁用，则逻辑电路断开，并且报警电路被激活。