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公开(公告)号:US20200284895A1
公开(公告)日:2020-09-10
申请号:US16775592
申请日:2020-01-29
Applicant: Tata Consultancy Services Limited
Inventor: Rajat Kumar DAS , Arijit CHOWDHURY , Tapas CHAKRAVARTY , Arpan PAL
Abstract: This disclosure relates generally to tracking motion of target in indoor environment. The method includes estimating an initial position of the target in a mesh grid form based on radar data captured from radar devices installed in the indoor environment. For a subsequent target movement, a subsequent position of the target is estimated in the mesh grid form based on the initial position and a resultant velocity vector of the target. A number of outlier grid-points is computed with a threshold number, and based on comparison the outlier grid-points are either replaced with interpolated grid-points or the subsequent position of the target is repaired based on a probable position of the target obtained from at least one of a linear regression based analysis of prior positions of the target, prior knowledge of the target velocity and sampling interval, and a trilateration based technique.
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公开(公告)号:US20180310851A1
公开(公告)日:2018-11-01
申请号:US15765763
申请日:2016-10-04
Applicant: Tata Consultancy Services Limited
Inventor: Rajat Kumar DAS , Aniruddha SINHA , Debatri CHATTERJEE , Shreyasi DATTA , Rahul Dasharath GAVAS
IPC: A61B5/04 , A61B5/00 , A61B5/048 , A61B5/0478
CPC classification number: A61B5/00 , A61B5/04 , A61B5/04012 , A61B5/0476 , A61B5/16 , A61B5/7203 , A61B5/7221 , A61B5/7282
Abstract: A method and system is provided for pre-processing of an electroencephalography (EEG) signal for cognitive load measurement. The present application provides a method and system for pre-processing of electroencephalography signal for cognitive load measurement of a user, comprises of capturing the electroencephalography signal from the head of the user, detecting the plurality of system artifacts in the captured electroencephalography signal, detecting and removing noisy window from the captured electroencephalography signal, detecting an eye blink region and filtering out said detected eye blink region from the captured electroencephalography signal, utilizing the filtered electroencephalography signal for measuring the cognitive load of the user and subsequently computing different levels of mental workloads on the user using variation of spatial distribution of frontal scalp EEG electrodes for measured cognitive load.
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公开(公告)号:US20170103668A1
公开(公告)日:2017-04-13
申请号:US15286127
申请日:2016-10-05
Applicant: Tata Consultancy Services Limited
Inventor: Debatri CHATTERJEE , Aniruddha SINHA , Rahul Dasharath GAVAS , Rajat Kumar DAS , ARIJIT SINHARAY
IPC: G09B7/12 , A61B5/1455 , A63F13/212 , A61B5/0476 , A61B5/0205
CPC classification number: G09B7/12 , A61B5/0205 , A61B5/02405 , A61B5/02416 , A61B5/04014 , A61B5/0476 , A61B5/0533 , A61B5/14551 , A61B5/165 , A61B5/168 , A61B5/4884 , A61M21/00 , A61M2021/005 , A61M2230/06 , A61M2230/10 , A61M2230/205 , A61M2230/65 , A63F13/212 , G16H10/20 , G16H20/70
Abstract: A method and system is provided for assessing the learning experience of the person by monitoring the mental state of the person. The method involves measuring the brain signal, skin conductance using GSR device, and heart rate variability using the pulse oximeter. These physiological signals are measured when the person is performing an activity such as the modified Stroop test. Once the activity is performed, an offline questionnaire is also filled by the person. Based on the comparison of the offline questionnaire and the physiological signals, a model is generated. This model is used to assess the learning experience of the person. According to another embodiment, a method is also provided for maintaining the steady flow state of a person while performing any activity.
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公开(公告)号:US20210215521A1
公开(公告)日:2021-07-15
申请号:US17112414
申请日:2020-12-04
Applicant: Tata Consultancy Services Limited
Inventor: Arijit SINHARAY , Rajat Kumar DAS , Anwesha KHASNOBISH , Tapas CHAKRAVARTY
Abstract: This disclosure relates to a system and method for measuring average temperature of mixed fluid in an enclosed chamber. Measurement is based on two independent principle as measuring variation in acoustic wave velocity and variation in resistivity that works on a single setup. First principle is based on measuring acoustic wave velocity in a known medium, which is isolated from the surrounding. The system comprises a primary pipe and a secondary pipe, wherein the ends of the pipes reside inside the enclosed chamber. The primary pipe is made out of good conductor of heat and filled with air. Ends of the primary pipe is fitted with a transducers have one transmitter at one end and one receiver at another end. Average temperature of the mixed fluid is measured based on the variations in sound velocity of acoustic wave passed through the primary pipe and resistivity variations of the primary pipe.
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公开(公告)号:US20210012863A1
公开(公告)日:2021-01-14
申请号:US16923877
申请日:2020-07-08
Applicant: Tata Consultancy Services Limited
Inventor: Rajat Kumar DAS , Arijit SINHARAY , Arijit CHOWDHURY , Tapas CHAKRAVARTY , Arpan PAL
Abstract: Temperature measurement is an important part of many potential applications in process industry. Conventional temperature measurement methods require manual intervention for process monitoring and fail to provide accurate and precise measurement of temperature of an enclosed mixed fluid chamber. The present disclosure provides artificial intelligence based temperature measurement in mixed fluid chamber. A plurality of inputs pertaining to the mixed fluid chamber are received to build a fluid based model. The fluid based model is used to generate one or more fluid parameters. The one or more fluid parameters are used along with a ground truth temperature data and the received plurality of inputs for training an artificial intelligence (AI) based model. However, the AI based model is trained with and without knowledge of fluid flow. The trained AI based model is further used to accurately estimate temperature of the mixed fluid chamber for a plurality of test input data.
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公开(公告)号:US20190171348A1
公开(公告)日:2019-06-06
申请号:US16321286
申请日:2017-05-23
Applicant: Tata Consultancy Services Limited
Inventor: Arpit VISHWAKARMA , Aniruddha SINHA , Ratnamala MANNA , Debatri CHATTERJEE , Vedraj VEDRAJ , Kingshuk CHAKRAVARTY , Rajat Kumar DAS , Anagha Nikhil MEHROTRA , Arpan PAL , Rahul Dasharath GAVAS , Anwesha KHASNOBISH , Abhijit DAS
IPC: G06F3/0481 , G06F3/01 , G06N20/00
Abstract: System and method for aiding communication for subjects suffering from paralysis of muscles controlled by peripheral nervous system are disclosed. A method for aiding communication for said subjects includes capturing, from a plurality of sensors, sensor data generated based on an interaction of a subject with an interactive UI. The plurality of sensors includes one or more body-parts movement tracking sensors for tracking motion of body-parts of the subject and one or more physiological signal sensors for monitoring physiological signals generated from the subject during the interaction. A plurality of model parameters indicative of characteristics of the subject related to the interaction are determined based on the sensor data. The navigation at the interactive UI is controlled on the plurality of model parameters.
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