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1、声光双控电子开关声光双控电子开关1.1.题目分析题目分析1.11.1 声光控制的概念声光控制的概念声光控制指通过利用声音以及光线的变化来控制电路实现特定功能的一种电子学控制方 法。声光控制延时开关主要由声控开关，光控开关，整流电路，延时电路，滤波电路几部分 组成。1.21.2 声光控制开关的控制方法声光控制开关的控制方法白天或光线较强时，电路为断开状态，灯不亮，当光线黑暗时或晚上来临时，开光进入 预备工作状态，此时，当来人有脚步声，说话声等声源时，开关自动打开，灯亮，并且触发 自动延时电路，延时一段时间后自动熄灭，从而实现了“人来灯亮，人去灯灭” ，杜绝了长 明灯，免去了在黑暗中寻找开关的麻烦
2、，尤其是上下楼道带来不便。2 2 原理分析原理分析2.12.1 总体原理分析总体原理分析2.22.2 声控电路原理声控电路原理因为声音是个模拟量且非电信号无法在数字电路中使用，所以我们在设计声控电路就面临 怎样把模拟量转化为数字量，把声音信号转化为电信号的问题。要解决这个问题，我们可以 设计一个接收设备专门用来接听声音信号并将声音信号转化为电信号传送到下一级电路。2.42.4 整流电路的原理整流电路的原理2.62.6 CD4011CD4011 芯片资料芯片资料2.6.1CD40112.6.1CD4011 内部结构框图内部结构框图CD4011CD4011 内部逻辑结构图内部逻辑结构图（1） 当
3、X=0，Y=0 时，将是两个 NAND 门之输出均为 1，违反触发器之功用，故禁止使用。 如真值表第二列。3 3 双控开关电路图及其工作原理双控开关电路图及其工作原理3.13.1 电路原理图电路原理图声光双控开关电路原理图声光双控开关电路原理图夜晚有声工作仿真结果材料清单材料清单序号器件名称主要参数及型号数量备注1电阻33K 1/4W1R12电阻180K 1/4W1R23电阻51 1/4W1R34电阻 1/4W1R45电阻270K 1/4W1R5 R66电阻27K 1/4W1R77电阻2.2M 1/4W1R88电解电容100uF/25V1C19瓷片电容1041C210电解电容10uF/50V1
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