公开(公告)号：US20190257802A1

公开(公告)日：2019-08-22

申请号：US16279698

申请日：2019-02-19

Applicant: Arizona Board of Regents on behalf of Arizona State University

Inventor： Erica Forzani ,  Nongjian Tao ,  Di Zhao ,  Francis Tsow

IPC: G01N33/00 ,  A61B5/00 ,  G01N21/84 ,  A61B5/08 ,  G01N33/497

Abstract: A method for CO2 detection includes obtaining a gas sample; exposing a CO2 sensor to the gas sample, where the sensor includes a reversible and selective pH-sensitive nanocomposite sensor element for CO2 detection, and a hydrophobic surface; compensating for humidity and temperature; coupling at least one light source to receive signals from the CO2 sensor and respond to color changes in the sensor by transducing the color change into a light intensity change; measuring flow; and receiving signals from the at least one light source by at least one photodiode which responds to light intensity changes by transducing the light intensity changes into electronic signals representing varying degrees of light intensity.

公开(公告)号：US10663442B2

公开(公告)日：2020-05-26

申请号：US16279698

申请日：2019-02-19

Applicant: Arizona Board of Regents on behalf of Arizona State University

Inventor： Erica Forzani ,  Nongjian Tao ,  Di Zhao ,  Francis Tsow

IPC: G01N31/00 ,  G01N33/00 ,  A61B5/08 ,  G01N21/84 ,  G01N33/497 ,  A61B5/00 ,  G01N1/22

Abstract: A method for CO2 detection includes obtaining a gas sample; exposing a CO2 sensor to the gas sample, where the sensor includes a reversible and selective pH-sensitive nanocomposite sensor element for CO2 detection, and a hydrophobic surface; compensating for humidity and temperature; coupling at least one light source to receive signals from the CO2 sensor and respond to color changes in the sensor by transducing the color change into a light intensity change; measuring flow; and receiving signals from the at least one light source by at least one photodiode which responds to light intensity changes by transducing the light intensity changes into electronic signals representing varying degrees of light intensity.

公开(公告)号：US10209232B2

公开(公告)日：2019-02-19

申请号：US15104668

申请日：2014-12-17

Applicant: Arizona Board of Regents on behalf of Arizona State University

Inventor： Erica Forzani ,  Nongjian Tao ,  Di Zhao ,  Francis Tsow

IPC: G01N1/22 ,  G01N31/00 ,  G01N33/00 ,  A61B5/08 ,  G01N21/84 ,  G01N33/497 ,  A61B5/00

Abstract: A CO2 detection chamber includes a gas inlet and a gas outlet. A CO2 sensor is housed in the CO2 detection chamber, where the sensor includes a reversible and selective pH-sensitive nanocomposite sensor element for CO2 detection, and a hydrophobic surface. A flowmeter, a thermistor and a humidity sensor operate to read flow and compensate for humidity conditions. A light source is coupled to receive signals from the CO2 sensor and respond to color changes in the sensor by transducing the color change into a light intensity change. A photodiode receives signals from the light source and responds to light intensity changes by transducing the light intensity changes into electronic signals representing varying degrees of light intensity. Data representing CO2 measurements is transmitted for display to a mobile device.

公开(公告)号：US20160313290A1

公开(公告)日：2016-10-27

申请号：US15104668

申请日：2014-12-17

Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY

Inventor： Erica Forzani ,  Nongjian Tao ,  Di Zhao ,  Francis Tsow

IPC: G01N33/00 ,  G01N21/84 ,  G01N33/497 ,  A61B5/08 ,  A61B5/00

CPC classification number: G01N33/004 ,  A61B5/0022 ,  A61B5/0059 ,  A61B5/082 ,  A61B2560/0242 ,  A61B2560/0252 ,  G01N21/8483 ,  G01N33/497

Abstract: A CO2 detection chamber includes a gas inlet and a gas outlet. A CO2 sensor is housed in the CO2 detection chamber, where the sensor includes a reversible and selective pH-sensitive nanocomposite sensor element for CO2 detection, and a hydrophobic surface. A flowmeter, a thermistor and a humidity sensor operate to read flow and compensate for humidity conditions. A light source is coupled to receive signals from the CO2 sensor and respond to color changes in the sensor by transducing the color change into a light intensity change. A photodiode receives signals from the light source and responds to light intensity changes by transducing the light intensity changes into electronic signals representing varying degrees of light intensity. Data representing CO2 measurements is transmitted for display to a mobile device.

Abstract translation: CO 2检测室包括气体入口和气体出口。 CO 2传感器被容纳在CO 2检测室中，其中传感器包括用于CO 2检测的可逆和选择性pH敏感的纳米复合传感器元件和疏水表面。 流量计，热敏电阻和湿度传感器用于读取流量并补偿湿度条件。 耦合光源以从CO 2传感器接收信号，并通过将颜色变化转换为光强度变化来响应传感器中的颜色变化。 光电二极管从光源接收信号并通过将光强度变化转换成表示不同程度的光强度的电子信号来响应光强度变化。 发送表示二氧化碳测量的数据被发送以便显示到移动设备。