基于自适应环境噪声的声光控LED照明灯设计

Design of a Sound-and-Light Controlled LED Lamp Based on Adaptive Ambient Noise

设计了一种具有自适应环境噪声的声光控LED照明灯,该照明灯通过实时采集环境噪声信号电压,通过A/D转换后计算出平均电平值,与前一时刻噪声平均电平值比较,根据电平差值的大小自适应地控制LED灯,克服了环境噪声误触发问题,实现了在不同环境噪声下声光控LED照明灯的智能触发。该电路结构简单、待机功耗低、工作稳定可靠、成本低,可广泛应用于走廊、公共卫生间等场合。

A sound-and-light controlled LED lamp based on adaptive ambient noise is designed in this paper.The designed LED lamp gathers voltage signals of ambient noise in real time,and the average level value,which is compared with the average of the previous noise level,will be calculated through A / D conversion. Then the LED lamp can be controlled adaptively according to the size of level difference,thus overcoming the problem of false triggering by ambient noise,and realizing intelligent triggering of the LED lamp under different ambient noises. Experiments show that the LED lamp has the advantages of simple circuit structure,micro-power consumption,high operation stability and low cost,which can be widely used in corridors,public toilets and so on.