公开(公告)号：US20170284956A1

公开(公告)日：2017-10-05

申请号：US15507527

申请日：2015-09-02

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY ,  MEAT & LIVESTOCK AUSTRALIA LIMITED

Inventor： Kourosh KALANTAR-ZADEH ,  Kyle BEREAN ,  Nam HA ,  Jian Zhen OU

IPC: G01N27/407 ,  B01D53/22

CPC classification number: G01N27/407 ,  A61B5/01 ,  A61B5/073 ,  A61B5/14539 ,  A61B5/14542 ,  A61B5/42 ,  A61B5/6861 ,  A61B2562/0247 ,  B01D53/22 ,  B01D53/228 ,  B01D67/0079 ,  B01D69/02 ,  B01D69/141 ,  B01D69/147 ,  B01D69/148 ,  B01D71/021 ,  B01D71/022 ,  B01D71/024 ,  B01D71/44 ,  B01D71/50 ,  B01D71/70 ,  B01D2323/21 ,  B01D2325/10 ,  B01D2325/20 ,  B01D2325/48 ,  B82Y30/00 ,  C01B32/15 ,  C01G3/02 ,  C01G45/02 ,  C01G49/02 ,  C08F38/02 ,  C08G64/00 ,  C08G77/20 ,  G01N27/40

Abstract: A gas permeable, liquid impermeable membrane for use with gas sensors consists of a film forming polymer which incorporates nanoparticles selected to improve one or more of the following: permeability to gases, to selectively regulate permeability of selected gases through the membrane, to inhibit microbial growth on the membrane. A capsule shaped container consists of wall material biocompatible with a mammal GI tract and adapted to protect the electronic and sensor devices in the capsule, which contains gas composition sensors, pressure and temperature sensors, a microcontroller, a power source and a wireless transmission device. The microprocessor receives data signals from the sensors and converts the signals into gas composition and concentration data and temperature and pressure data for transmission to an external computing device. The capsule wall incorporates gas permeable nano-composite membranes with embedded catalytic and nano void producing nanoparticles, enhancing the operation, selectivity and sensitivity of the gas sensors.

公开(公告)号：US20180299395A1

公开(公告)日：2018-10-18

申请号：US15735626

申请日：2016-06-10

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY

Inventor： Kourosh KALANTAR-ZADEH ,  Jian Zhen OU ,  Nam HA ,  Yongxiang LI

IPC: G01N27/12

Abstract: This invention provides a highly-selective and sensitive Nitrogen oxide gas sensor based on the resistive transducing platforms using two-dimensional (2D) tin disulphide (SnS2) flakes that can operate below 150° C. This sensor operates based on the physisorption of nitrogen oxide on the surface of the sensitive layer. The fabrication of the sensors is low-cost. The tin disulphide is preferably produced by reacting tin dichloride at elevated temperature with powdered sulphur in a liquid phase to form tin disulphide nano particles and separating the tin disulphide nano particles from the liquid phase.

公开(公告)号：US20190183380A1

公开(公告)日：2019-06-20

申请号：US16325272

申请日：2017-08-14

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY

Inventor： Kourosh KALANTAR-ZADEH ,  Kyle BEREAN ,  Nam HA ,  Jian Zhen OU

IPC: A61B5/07 ,  A61B5/00 ,  A61B5/1491 ,  G01N33/497 ,  A61B5/145

CPC classification number: A61B5/073 ,  A61B5/002 ,  A61B5/14507 ,  A61B5/1451 ,  A61B5/14539 ,  A61B5/14542 ,  A61B5/1491 ,  A61B5/4238 ,  A61B5/4255 ,  A61B5/6861 ,  A61B2562/0271 ,  A61B2562/162 ,  G01N33/497

Abstract: A capsule adapted to be introduced into the digestive system and gastrointestinal (Gl) tract of a mammal which consists of a capsule shaped container consisting of a wall material capable of being bio compatible with the digestive system and being adapted to protect the electronic and sensor devices contained in the capsule. The capsule contains gas composition sensors operable at several temperature points for a short duration, a temperature sensor, a micro controller, a power source and a wireless transmission device. The capsule wall incorporates gas permeable membranes adjacent said gas sensors. The microprocessor is programmed to receive data signals from the sensors and convert the signals into gas composition and concentration data and temperature data suitable for transmission to an external computing device.

公开(公告)号：US20210131998A1

公开(公告)日：2021-05-06

申请号：US17083465

申请日：2020-10-29

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY ,  MEAT & LIVESTOCK AUSTRALIA LIMITED

Inventor： Kourosh KALANTAR-ZADEH ,  Kyle BEREAN ,  Nam HA ,  Jian Zhen OU

IPC: G01N27/407 ,  G01N27/40 ,  B82Y30/00 ,  A61B5/145 ,  A61B5/07 ,  B01D67/00 ,  B01D69/02 ,  B01D69/14 ,  A61B5/00 ,  B01D53/22

Abstract: A gas permeable, liquid impermeable membrane for use with gas sensors consists of a film forming polymer which incorporates nanoparticles selected to improve one or more of the following: permeability to gases, to selectively regulate permeability of selected gases through the membrane, to inhibit microbial growth on the membrane. A capsule shaped container consists of wall material biocompatible with a mammal GI tract and adapted to protect the electronic and sensor devices in the capsule, which contains gas composition sensors, pressure and temperature sensors, a microcontroller, a power source and a wireless transmission device. The microprocessor receives data signals from the sensors and converts the signals into gas composition and concentration data and temperature and pressure data for transmission to an external computing device. The capsule wall incorporates gas permeable nano-composite membranes with embedded catalytic and nano void producing nanoparticles, enhancing the operation, selectivity and sensitivity of the gas sensors.

公开(公告)号：US20200292480A1

公开(公告)日：2020-09-17

申请号：US16610678

申请日：2018-05-04

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY

Inventor： Adam CHRIMES ,  Kyle BEREAN ,  Nam HA ,  Kourosh KALANTAR-ZADEH

IPC: G01N27/12

Abstract: Disclosed herein is a method for determining a type and corresponding concentration of at least one gas in a multi-gas mixture, the method including: exposing a gas sensitive element of a gas sensor to the multi-gas mixture; modulating a drive signal supplied to a temperature control element of the gas sensor to cause a temperature of the gas sensitive element to change from an initial temperature; recording a transient impedance response of the gas sensitive element while the temperature of the gas sensitive element changes to obtain a transient impedance response that is characteristic of the multi-gas mixture; using the transient impedance response to determine a type and corresponding concentration of at least one gas in the multi-gas sample from a database including calibration data corresponding to the at least one gas. Also disclosed herein is a method of calibrating a multi-gas sensing system, a multi-gas sensing system, and related methods for determining a type and corresponding concentration of at least one gas in a multi-gas mixture.