RenesasZMOD4510超低功耗时内外空气质量传感器平台方案

Renesas公司的ZMOD4510是超低功耗户外和室内空气质量传感器平台,解锁个性化空气质量NO2 和O3监测体验.平台是12引脚LGA封装(标准版本3.0 × 3.0 × 0.7 mm),包含了气体检测元件和CMOS信号调理集成电路.检测元件包含基于硅MEMS结构的加热元件和金属-氧化物(MOx)化敏电阻器.信号调理器控制传感器温度和测量MOx电阻,它是气体浓度的函数,它的数据确定气体目前的存量,并根据国际标准指示AQI.测量结果通过用户微处理器和I2C接口进行读取.ZMOD4510具有最新的超低工作电流消耗,是低压和低功耗电池应用的极好选择.器件内部自动补偿温度传感器,I2C接口频率高达400kHz,内置非易失存储器(NVM)用来存储模块数据,超低平均功耗可低至0.2mW.RoHS兼容,工作温度-40C到+65C,工作电压1.7V - 3.6 V. 增强型平台为可穿戴设备,智能手机和工业监测设备提供了可选定臭氧检测功能,微型传感器和IP67防水封装.主要用在空调二氧化氮和臭氧检测,室外空气非健康条件检测,个人空气质量监视器,智能城市仪表和基于AQI(HVAC系统,建筑物空气纯化系统)的自动化.本文介绍了ZMOD4510主要特性,功能框图和应用电路,评估板ZMOD4510 EVK主要特性,电路图(通信板和传感器板),材料清单和PCB设计图.

The ZMOD4510 Gas Sensor Platform detects air quality in a variety of indoor and outdoor applications. The module is a 12-pin LGA assembly (standard version 3.0 × 3.0 × 0.7 mm) that consists of a gas sense element and a CMOS signal conditioning IC. The modules sense element consists of a heater element on a silicon-based MEMS structure and a metal-oxide (MOx) chemiresistor. The signal conditioner controls the sensor temperature and measures the MOx resistance, which is a function of the gas concentration.

The device is ideal for monitoring and reporting Outdoor Air Quality (OAQ). The provided free firmware enables different ZMOD4510 features based on traditional and machine learning algorithms with an embedded artificial intelligence (AI) using the same hardware platform. This is used to determine the Air Quality Index (AQI) output, which is based on gases present. The outdoor air quality includes nitrogen dioxide (NO2) and ozone (O3). Alternatively, depending on the operation mo...