人们最初对窗户的防范是在窗口安装一个由细金属丝串成的网,这些细金属丝与一个金属夹相联形成一个回路。当有人破窗而入时,就会碰掉夹子上的金属丝而形成开路报警。这种金属丝网并不能探测玻璃破碎,仅仅是探测到入侵者通过被破坏了的窗户进入房间。 铝箔的应用使对玻璃破碎的探测向前跨进了一大步。约1厘米宽的铝箔带沿玻璃边缘贴在玻璃窗上,铝箔带形成回路。由于铝箔带 The first thing people did was to prevent the windows from installing a mesh of thin metal wires in the window. These fine wires were connected to a metal clip to form a circuit. When someone breaks through the window and enters, it will touch off the wire on the clip and form an open circuit alarm. This wire mesh does not detect broken glass. It merely detects intruders entering the room through broken windows. The application of aluminum foil has taken a big step forward in the detection of broken glass. About 1 cm wide aluminum foil tape is attached to the glass window along the edge of the glass, and the aluminum foil tape forms a loop. Due to the aluminum foil