IDT ZMOD4410 TVOC和IAQ气体传感器模块解决方案

IDT公司的ZMOD4410是用来检测总挥发性有机物(TVOC)和监测室内气体质量(IAQ)的气体传感器模块,12引脚LGA装配(3.0x 3.0x0.7 mm)包含了气体检测元件和CMOS信号调理IC,而模块检测元件有对基于Si的MEMS结构和金属氧化物(MOx)化敏电阻器的加热元件;信号调理控制传感器温度,并测量MOx导电率,它是气体浓度的函数.测量结果通过I2C接口(频率高达400kHz)由用户微处理器来读出,并处理数据来确定TVOC浓度,IAQ额度, 估算二氧化碳(eCO2)水平.取决于工作模式,ZMOD4410软件能产生控制信号,它能基于气味水平来触发动作.器件在低功耗工作模式,具有低工作电流.因此ZMOD4410在低电压和低功耗电池应用中是极好的选择,内置了非易失存储器(NVM)存储了配置参数,并提供任意用户数据存储空间.工作电压1.7V - 3.6V,主要用在室内空气监测,用于健康舒适的监测家庭,办公室和个人环境中.检测有害物质和非健康条件(如建筑材料产生的烟雾),基于室内环境空气质量(如HVAC,空气净化器,加热器等)的自动化等.本文介绍了ZMOD4410主要特性,框图,应用电路图以及评估板ZMOD4410 EVK主要特性,通信板和传感器板电路图,材料清单和PCB设计图.
The ZMOD4410 Gas Sensor Module is designed for detecting total volatile organic compounds (TVOC) and monitoring indoor air quality (IAQ) in different use cases. It is a 12-pin LGA assembly (3.0x 3.0x0.7 mm) that consists of a gas sense element and a CMOS signal conditioning IC. The module’s sense element con-sists of heater element on a Si-based MEMS structure and a metal oxide (MOx) chemiresistor. The signal conditioner controls the sensor temperature and measures the MOx conductivity, which is a function of the gas concentration.
The measurement results can be read via an I2C interface with the user’s microprocessor, which processes the data to determine the TVOC concentration, IAQ rating, and estimated carbon dioxide (eCO2) level. Alternatively, depending on the operation mode, the ZMOD4410 software can generate a control signal, which can trigger actions based on odor levels. With its low operating current consumption in Low-Power Operation Mode, the ZMOD4410 is an excellent choice for low-voltage and low-power battery appli-cations. Built-in non...