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Sensor circuitry for gas sensing applications

a sensor circuit and gas sensing technology, applied in the field of nano gas sensing systems, can solve the problems of difficult to capture the true signal of interest, bulky and/or expensive other techniques that rely on optical methods of measurement and detection, and limited measurement rang

Inactive Publication Date: 2020-02-27
AERNOS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a new design for a gas sensor that can detect extremely small amounts of gases in the air. The sensor works by using a special mixture of nanosystems and a special formulation that targets specific gases. Each sensor has its own resistance and capacitance, which change when it interacts with gases. The sensor is made up of a large number of small electrodes and wells, which help to deposit the nanosystems consistently. Overall, this design allows for the efficient and accurate detection of gases in the air.

Problems solved by technology

In many applications there is a limited range of measurement, or a tradeoff between measurement range and accuracy.
Other techniques that rely on an optical method of measurement and detection are often bulky and / or expensive.
As the number of sensors increases, the delay between each sensor's measurement may lead to difficulty in capturing the true signal of interest.
Commercially available gas sensors can also be cumbersome to use, expensive and limited in performance (e.g. accuracy, selectivity, lowest detection limit, etc.).
In addition, other major drawbacks may include inability to detect different types of gases at the same time, inability to measure absolute concentration of individual gases, the requirement for frequent re-calibration, a size incompatible with integration into small form factor systems such as wearable devices, the reliance on power-hungry techniques such as heating or on technologies not well suited to manufacturing in very high volume.
Nanomaterial deposition and scaling up for volume manufacturing have presented key challenges.

Method used

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  • Sensor circuitry for gas sensing applications
  • Sensor circuitry for gas sensing applications
  • Sensor circuitry for gas sensing applications

Examples

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example 1

[0107]We take 20,000 breaths every day and the air we breathe impacts our health—the science is already clear on this—but we rarely know what is in the air we breathe. To take meaningful action, consumers, scientists, public officials and business owners need the ability to measure air pollution at a personal, local and granular level which has, before this invention, been impossible due to the limitations of commercially available gas sensors mentioned above.

[0108]Mounting evidence suggests that prenatal and early life exposure to common environmental toxins, such as air pollution from fossil fuels, can cause lasting damage to the developing human brain. These effects are especially pronounced in highly vulnerable fetuses, babies, and toddlers as most of the brain's structural and functional architecture is established during these early developmental periods. These disruptions to healthy brain development can cause various cognitive, emotional, and behavioral problems in later inf...

example 2

[0112]The sensor technology described herein can be used in smart appliances such as connected refrigerators, that will help customers monitor food freshness, detect spoilage and the presence of harmful pesticide residues. The simultaneous, multi-gas, sensing capability of the invention will enable sensors that can recognize the gas patterns associated with the condition of specific foods.

example 3

[0113]A network or grid of the sensors 400 described herein, can be integrated into industrial areas such as petrochemical complexes and oil refineries to allow companies to monitor the sites during regular operation (e.g. for leaks) or in the event of natural or human-made disasters. The sensors can also be installed in drones for data collection in hard to reach or potentially dangerous area. The ability of the technology to be deployed in wearables and in fixed and mobile networks will provide both personal protection and granular data across large area, allow the constant monitoring of a facility for preventive measures to be taken in a timely fashion, save critical time when urgent decision making is required and provide invaluable information to protect workers and emergency personnel.

[0114]The same technology can place powerful new tools in the hands of first responders and officials responsible for public safety and homeland security.

[0115]FIG. 6 shows an example product 600...

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Abstract

A nanomaterial-based gas sensor system comprising a specific Platinum (Pt) patterned electrode structure is built on a Silicon (Si) / Silicon Dioxide (SiO2) substrate. The pattern is compatible with high volume manufacturing and nano gas sensor development requirements.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Patent Application No. 62 / 721,289, filed Aug. 22, 2018, U.S. Provisional Patent Application No. 62 / 721,293, filed Aug. 22, 2018, U.S. Provisional Patent Application No. 62 / 721,296, filed Aug. 22, 2018, U.S. Provisional Application No. 62 / 721,302, filed Aug. 22, 2018, U.S. Provisional Patent Application No. 62 / 721,306, filed Aug. 22, 2018, U.S. Provisional Patent Application No. 62 / 721,309, filed Aug. 22, 2018, U.S. Provisional Application No. 62 / 721,311, filed Aug. 22, 2018, U.S. Provisional Patent Application No. 62 / 799,466, filed Jan. 31, 2019, the contents of which are incorporated herein by reference.BACKGROUND1. Technical Field[0002]The embodiments herein relate to a nano gas sensing system for detection and measurement of the absolute concentration of multiple gases at the same time and to the sensing of gases by a hybrid nanostructure array, and more specifically to the design of...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N27/22G01N27/12
CPCG01N33/0031G01N27/122G01N27/228G01N27/226G01N33/0011G01N33/0022G01N33/0037G01N33/004G01N33/0042G01N33/0047G01N27/127G01N27/128B82Y30/00Y02A50/20G01N27/227G01N27/4162G01N27/125G01N27/121G01N27/046G05B19/042G05B2219/25127G05B2219/25257G01N27/4075B01J21/185B01J31/1691B82Y40/00B01J23/00G01N27/12
Inventor DOSHI, SUNDIP R.SU, HENG CHIA
Owner AERNOS INC