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用户手册(MQ-135-Gas-Sensor-UserManual).pdf

发布时间：2023-11-29 发布人：admin 分类：养殖 资料大小：0.13M 资料格式：pdf 举报 版权申诉
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    MQ-135 Gas Sensor 用户手册 微雪电子 MQ-135 Gas Sensor 用户手册 1. 产品特性 敏感气体 升压芯片 工作电压 产品尺寸 固定孔尺寸 氨气，氮氧化合物，醇类，芳族化合物，硫化物，烟雾 PT1301 2.5V-5.0V 40.0mm*21.0mm 2.0mm 表1. 产品特性 原理：MQ135 气体传感器所使用的气敏材料是在清洁空气中电导率较低的二 氧化锡(SnO2)。当传感器所处环境中存在污染气体时，传感器的电导率随空 气中污染气体浓度的增加而增大。MQ135 气体传感器对氨气、硫化物、苯系 蒸汽的灵敏度高，对烟雾和其它有害气体的监测也很理想。这种传感器可检 测多种有害气体，是一款适合多种应用的低成本传感器。 2. 主要用途 家庭和环境的有害气体检测装置 3. 接口说明 引脚号 标识 描述 1 2 3 4 DOUT AOUT GND VCC 表2. 接口说明 数字量输出 模拟量输出 电源地 电源正(2.5V-5.0V) 4. 操作与现象 下面，以接入我们的开发板为例。 ① 将配套程序下载到相应的开发板中。 ② 将串口线和模块接入开发板，给开发板上电。 模块与开发板连接如下表所示： 端口 STM32 单片机引脚 DOUT AOUT GND VCC GPIOA.4 GPIOA.6 GND 3.3V 表3. 模块接入 STM32 开发板 1
    MQ-135 Gas Sensor 用户手册 微雪电子 端口 DOUT AOUT GND VCC Arduino 引脚 D2 A0 GND 5V 表4. 模块接入 Arduino ③ 让传感器先预热一分钟。 ④ 把传感器放入含有敏感气体的装置中，模块上的信号指示灯点亮。 把传感器从敏感气体装置中取出，模块上的信号指示灯熄灭。 2
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