BCI 问题整改方案是否可行？大神请进！

redforest

  <p>目前产品测试BCI，<span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA" lang="EN-US">BCI</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">测试中的<span lang="EN-US">450mm</span>的<span lang="EN-US">CBCI</span>按照<span lang="EN-US">LEVEL1</span>的限值，两个样品在<span lang="EN-US">CW</span>及<span lang="EN-US">AM</span>模式均出现问题，频段在<span lang="EN-US">167-253MHz</span>出现灯变红的现象，样品出风正常，测试结束后灯正常出风正常。</span></span></span></p><p><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"></span></span></span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"></span></span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">测试过程中，指示灯由冰蓝色变成红色，直接表象就是红灯被控制打开，蓝灯被控制关闭，可能的原因如下</span></p><p><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">输入线端的干扰影响到灰尘传感器电路，</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">AN5</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">脚得到的电压值升高，达到软件设定的空气质量差的阀值，</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">MCU</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">控制</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">RC4</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">关闭冰蓝灯，控制</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">RC5</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">点亮了红灯。经分析这种可能性是最大的。而引起</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">AN5</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">脚电压值升高的原因，只能是供电的</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">IN6</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">，也就是</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">+5V</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">进来有干扰。而</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: en-US">+5V</span><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">被干扰，可能电源供电电路也被干扰。即整个电源包括地抗干扰能力不够。</span></span></p><p><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN"><span style="FONT-FAMILY: 微软雅黑; COLOR: black; FONT-SIZE: 10pt; mso-ascii-font-family: 微软雅黑; mso-fareast-font-family: 微软雅黑; mso-bidi-font-family: +mn-cs; mso-color-index: 1; mso-font-kerning: 12&#46;0pt; language: zh-CN">整改方案如下：</span></span></p>

amo

可以的，思路没什么问题。

如果怀疑电源有问题，就做滤波。

磁珠用大一些，电容，你配的是低频稳压电容，你还需要配一些高频电容，比如1NF 0.1NF。

另外，你可以用示波器去抓图，看看测试的时候是否真的受干扰了。
你还要关注BCI注入端口的滤波是否足够。

redforest

[s:12] 谢谢。