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公开(公告)号：US20210275045A1
公开(公告)日：2021-09-09
申请号：US17176396
申请日：2021-02-16
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
Abstract: One or more electromagnetic radiation sources, such as a light emitting diode, may emit electromagnetic waves into a volume of space. When an object enters the volume of space, the electromagnetic waves may reflect off the object and strike one or more position sensitive detectors after passing through an imaging optical system such as glass, plastic lens, or a pinhole located at known distances from the sources. Mixed signal electronics may process detected signals at the position sensitive detectors to calculate position information as well as total reflected light intensity, which may be used in medical and other applications. A transparent barrier may separate the sources and detectors from the objects entering the volume of space and reflecting emitted waves. Methods and devices are provided.
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公开(公告)号：US20200346518A1
公开(公告)日：2020-11-05
申请号：US16826258
申请日：2020-03-22
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
Abstract: System and apparatus for carbon dioxide detection within an automobile. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a stationary and moving vehicle. There is a need for a such a system to prevent loss of life and contribute to a safer traffic environment. This disclosure provides a highly efficient optical measurement system based on principals of optical absorption spectroscopy. It detects the presence of neglected children and animals and changes the vehicle's interior environment accordingly so as to preclude many potentially dangerous conditions. The present disclosure can also optimize ventilation for a driver. To this end, a driver can maximize alertness and attentiveness.
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公开(公告)号：US20190150839A1
公开(公告)日：2019-05-23
申请号：US15816609
申请日：2017-11-17
Applicant: Analog Devices, Inc.
Inventor： Neal Tait KURFISS , Shrenik DELIWALA
IPC: A61B5/00 , A61B5/1455
Abstract: Device for detecting characteristic signals of tissues and materials and methods for calculating thereof. Apparatus and methods for detecting the presence of tissue (skin) in pulse oximeter are disclosed. Specifically, analysis using optical techniques are used to identify characteristic signals of different compositions of matter. The present application discloses using a plurality of photodetectors at different distances from a source to measure light scattering through a variety of materials, and more specifically, to detect the presence of tissue.
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公开(公告)号：US20240085318A1
公开(公告)日：2024-03-14
申请号：US18484971
申请日：2023-10-11
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01N21/3504 , G01N21/01
CPC classification number: G01N21/3504 , G01N21/01 , G01N2021/3513 , G01N2201/0636 , G01N2201/1211
Abstract: System and apparatus for robust, portable gas detection. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a compact package using two optical pathways. There is a need for a very compact, low-power, gas detection system for gases such as CO2, NOx, water vapor, methane, etc. This disclosure provides an ultra-compact and highly stable and efficient optical measurement system based on principals of optical absorption spectroscopy using substantially collinear pathways.
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公开(公告)号：US20230349807A1
公开(公告)日：2023-11-02
申请号：US18345335
申请日：2023-06-30
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01N15/06 , G08B17/107 , G08B17/113
CPC classification number: G01N15/06 , G08B17/107 , G08B17/113 , G01N2015/0046
Abstract: Herein disclosed in some embodiments is a fault detector for power amplifiers of a communication system. The fault detector can detect a portion of the power amplifiers that are in fault condition and can prevent or limit current flow to the power amplifiers in fault condition while allowing the rest of the power amplifiers to operate normally. The fault detector can further indicate which power amplifiers are in fault condition and/or the cause for the power amplifiers to be in fault condition. Based on the indication, a controller can direct communications away from the power amplifiers in fault condition and/or perform operations to correct the fault condition.
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Patent Agency Ranking
公开(公告)号：US20200175848A1
公开(公告)日：2020-06-04
申请号：US16699677
申请日：2019-12-01
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G08B29/24 , G01N21/94 , G01N21/61 , G08B17/107 , G08B17/12
Abstract: Comprehensive system for fire detection and implementing thereof. The disclosed system combines and optimizes optical, electrical, and sensor sub-systems to provide the functionality demanded by the market. While many of the individual functions exist separately, none of the existing products combine elements from different sub-systems to provide a much higher level of functionality. The present disclosure shows how to build a very compact housing around the smoke detector while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust.
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公开(公告)号：US20190187037A1
公开(公告)日：2019-06-20
申请号：US16181878
申请日：2018-11-06
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01N15/06
CPC classification number: G01N15/06 , G01N2015/0046 , G01N2015/0693 , G08B17/107
Abstract: Device for optically detecting smoke and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build a very compact housing around the smoke detector while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust.
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公开(公告)号：US20170261425A1
公开(公告)日：2017-09-14
申请号：US15457258
申请日：2017-03-13
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
CPC classification number: G01N21/31 , A61B5/0075 , A61B5/0205 , A61B5/02427 , A61B5/02433 , A61B5/14532 , A61B5/14542 , A61B5/442 , A61B5/443 , A61B5/681 , A61B5/6824 , A61B5/721 , A61B2560/0233 , A61B2562/0233 , A61B2562/04 , G01N21/314 , G01N21/3554 , G01N21/4738 , G01N21/55 , G01N33/18 , G01N2021/3144
Abstract: Aspects of the embodiments are directed to compact and non-contact systems, methods, and devices for optical detection of target chemicals on/in samples are disclosed. Light of at least two different wavelengths, or different bands of wavelengths, interacts with a target chemical, and at least some of the light that has interacted with the target chemical is incident on at least two photodetectors. Each of the photodetectors is configured to detect light of a different wavelength, or a different band of wavelengths, that has interacted with the target chemical. A processing logic is configured to compute a ratio between a parameter indicative of the intensity of light detected by one photodetector and a parameter indicative of the intensity of light detected by the other photodetector, and to determine the presence and/or the amount of the target chemical based on the computed ratio.
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公开(公告)号：US20230120444A1
公开(公告)日：2023-04-20
申请号：US18066766
申请日：2022-12-15
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: G01N21/3504 , G01N33/00
Abstract: Device for improving an optical detecting smoke apparatus and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are (disclosed. Specifically, the present disclosure shows how to build one or more optimized blocking members in a smoke detector to augment signal to noise ratio. This is performed while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical defection elements, are disclosed.
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公开(公告)号：US20220142584A1
公开(公告)日：2022-05-12
申请号：US17582842
申请日：2022-01-24
Applicant: Analog Devices, Inc.
Inventor： Shrenik DELIWALA
IPC: A61B5/00 , A61B5/1455 , G16H40/63
Abstract: A plethysmography (“PPG”) measurement system may include at least one source of PPG radiation and at least one auxiliary sensor for detection of PPG radiation. The radiation source emits a portion of the PPG radiation toward a subject and another portion along an optical path for direct communication between the PPG radiation source and the auxiliary sensor. The auxiliary sensor may develop a profile against which measurements from primary PPG sensors, which receive light returning from the subject, may be compared. From this comparison, new PPG signals may be generated that exhibit lower noise than the PPG signals output by PPG sensors. These noise mitigation techniques may be used advantageously by a PPG system to generate more accurate measurements and also to reduce power consumption by the radiation sources.
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