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看了《电子制作》97年第5期《摩托车防盗报警喇叭》一文,本人即邮购了一只。该喇叭小巧美观,安装使用方便。但本人试用后觉得其振动灵敏度不够高,须强烈振动才能报警,这给一些窃车高手以可乘之机。灵敏度不高主要是原振动传感器ZC太简单。于是本人决定弃原来的ZC不用,自制一高灵敏度传感器,它由一个直径约3cm的印刷电路的圆盘(可用敷铜板自制,如图)和一颗6～8mm的镀铬钢珠组
Read the “Electronic Production” No. 97 in 1997, “motorcycle burglar alarm horn,” a text, I was a mail order. The speaker small and beautiful, easy to install and use. However, I feel that after the trial vibration sensitivity is not high enough to be strong vibration to the police, which gave some stolen master to take advantage of the machine. Sensitivity is not high mainly the original vibration sensor ZC too simple. So I decided to abandon the original ZC do not have to make a high sensitivity sensor, which consists of a diameter of about 3cm of the printed circuit disc (available copper foil homemade, pictured) and a 6 ~ 8mm chrome ball group