一种用于无线空气质量监测应用的三步分辨率可重构有害多气体传感器接口。

A Three-Step Resolution-Reconfigurable Hazardous Multi-Gas Sensor Interface for Wireless Air-Quality Monitoring Applications.

作者信息

Choi Subin, Park Kyeonghwan, Lee Seungwook, Lim Yeongjin, Oh Byungjoo, Chae Hee Young, Park Chan Sam, Shin Heugjoo, Kim Jae Joon

机构信息

School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea.

School of Mechanical, Aerospace and Nuclear Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea.

出版信息

Sensors (Basel). 2018 Mar 2;18(3):761. doi: 10.3390/s18030761.

DOI:10.3390/s18030761

PMID:29498686

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5876904/

Abstract

This paper presents a resolution-reconfigurable wide-range resistive sensor readout interface for wireless multi-gas monitoring applications that displays results on a smartphone. Three types of sensing resolutions were selected to minimize processing power consumption, and a dual-mode front-end structure was proposed to support the detection of a variety of hazardous gases with wide range of characteristic resistance. The readout integrated circuit (ROIC) was fabricated in a 0.18 μm CMOS process to provide three reconfigurable data conversions that correspond to a low-power resistance-to-digital converter (RDC), a 12-bit successive approximation register (SAR) analog-to-digital converter (ADC), and a 16-bit delta-sigma modulator. For functional feasibility, a wireless sensor system prototype that included in-house microelectromechanical (MEMS) sensing devices and commercial device products was manufactured and experimentally verified to detect a variety of hazardous gases.

摘要

本文提出了一种用于无线多气体监测应用的分辨率可重构宽量程电阻式传感器读出接口，该接口可在智能手机上显示结果。选择了三种类型的传感分辨率以最小化处理功耗，并提出了一种双模式前端结构，以支持对具有广泛特征电阻范围的多种有害气体进行检测。读出集成电路（ROIC）采用0.18μm CMOS工艺制造，以提供三种可重构数据转换，分别对应于低功耗电阻-数字转换器（RDC）、12位逐次逼近寄存器（SAR）模数转换器（ADC）和16位Δ-Σ调制器。为了验证功能可行性，制造了一个无线传感器系统原型，该原型包括内部微机电（MEMS）传感设备和商业设备产品，并通过实验验证了其对多种有害气体的检测能力。