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公开(公告)号：US20230419760A1
公开(公告)日：2023-12-28
申请号：US18462375
申请日：2023-09-06
发明人： Jitendra Sitaram Chaurasia , ArunManikanda Kalirajan , Mourian Balasubramanian , Hai Pham , Manik Jahagirdar , Lalitha M. Eswara , Ismaiel Shaik , Sivasanthanam Dhayalan , Bhavya Hanumegowda , Govindaraju KC , Mayur Salgar , Sheeladitya Karmakar , Vijay Dhamija
摘要： Methods and systems for maintaining a healthy building. In one example, an access card reader for controlling access to a secure area may comprise a card reader for reading an access card identifier from an access card presented by a user, a touchless thermal sensor for sensing a skin temperature of the user, a memory, and a controller operatively coupled to the card reader, the touchless thermal sensor and the memory. In response to a user presenting an access card to the card reader, the controller may be configured to store in the memory the access card identifier read by the card reader along with a corresponding skin temperature of the user. In another example, a system may be configured to perform contact tracing when an occupant has been identified as displaying signs of an illness
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公开(公告)号：US20170265041A1
公开(公告)日：2017-09-14
申请号：US15065053
申请日：2016-03-09
摘要： Systems, devices, and methods for indoor location are described herein. One device includes instructions stored thereon executable by a processor to determine a first location estimate of a mobile device in a facility via a first location technique, determine a second location estimate of the mobile device in the facility via a second location technique, and determine a third location estimate based on the first and second location estimates.
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公开(公告)号：US20210349456A1
公开(公告)日：2021-11-11
申请号：US16870719
申请日：2020-05-08
发明人： Hai Pham , Saul Cooper , Mark Finney , Arjun BJ
摘要： An unmanned aerial vehicle (UAV) navigation system includes a portable, ground-based landing pad comprising having a first antenna configured to transmit a data packet; a UAV comprising a second antenna configured to receive the data packet; and second processing circuitry configured to determine a signal strength between the first antenna and the second antenna; determine, based on the signal strength, an orientation of the vehicle relative to the landing pad; and determine, based on a time of flight of the data packet, a distance between the vehicle and the landing pad.
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公开(公告)号：US20140260523A1
公开(公告)日：2014-09-18
申请号：US13827464
申请日：2013-03-14
发明人： Andy Peczalski , Raj Mohan Bharadwaj , Hai Pham , David Wunderlin , Kyusung Kim , Dinkar Mylaraswamy
IPC分类号： G01H3/00
CPC分类号： G01H3/005
摘要： A method of calibrating a radar-based vibration sensor that includes a radar head coupled to a vibration device includes disposing the vibration sensor at a fixed distance from a target, and transmitting radio frequency (RF) signals toward, and receiving RF signals reflected by, the target. An excitation voltage is supplied, at a plurality of different excitation frequencies, to the vibration device to cause the vibration sensor to vibrate. Vibration sensor acceleration is determined at each of the different excitation frequencies. A calibration curve is generated based on the determined vibration sensor acceleration at each of the different excitation frequencies, and on the reflected RF signals at each of the different excitation frequencies.
摘要翻译： 一种校准基于雷达的振动传感器的方法，其包括耦合到振动装置的雷达头，包括：将振动传感器设置在与目标相距一定距离处，并且将射频（RF）信号传输到射频信号， 目标。 以多个不同的激励频率向振动装置提供激励电压，以使振动传感器振动。 在每个不同的激励频率下确定振动传感器的加速度。 基于在每个不同激发频率下确定的振动传感器加速度以及每个不同激励频率处的反射RF信号产生校准曲线。
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公开(公告)号：US11442140B1
公开(公告)日：2022-09-13
申请号：US16902699
申请日：2020-06-16
摘要： In some examples, a system includes at least three receivers configured to receive a surveillance packet from another vehicle at respective arrival times. The system includes a first receiver configured to receive a surveillance packet from the other vehicle at a first time. The system also includes a second receiver configured to receive the surveillance packet from the other vehicle at a second time. The system further include a third receiver configured to receive the surveillance packet from the other vehicle at a third time. In addition, the system includes processing circuitry configured to determine a location of the ownship vehicle based on the received surveillance packet and the respective arrival times.
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公开(公告)号：US11783658B2
公开(公告)日：2023-10-10
申请号：US17336985
申请日：2021-06-02
发明人： Jitendra Sitaram Chaurasia , ArunManikandan Kalirajan , Mourian Balasubramanian , Hai Pham , Manik Jahagirdar , Lalitha M. Eswara , Ismaiel Shaik , Sivasanthanam Dhayalan , Bhavya Hanumegowda , Govindaraju Kc , Mayur Salgar , Sheeladitya Karmakar , Vijay Dhamija
摘要： Methods and systems for maintaining a healthy building. In one example, an access card reader for controlling access to a secure area may comprise a card reader for reading an access card identifier from an access card presented by a user, a touchless thermal sensor for sensing a skin temperature of the user, a memory, and a controller operatively coupled to the card reader, the touchless thermal sensor and the memory. In response to a user presenting an access card to the card reader, the controller may be configured to store in the memory the access card identifier read by the card reader along with a corresponding skin temperature of the user. In another example, a system may be configured to perform contact tracing when an occupant has been identified as displaying signs of an illness.
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公开(公告)号：US20220242589A1
公开(公告)日：2022-08-04
申请号：US17212685
申请日：2021-03-25
发明人： Hai Pham , Arjun Bindu Jyothikumar , Thandava Krishna Edara , Nikolas Pardoe , Samuel Elliott Fleishman , Moses Bangura , Mohan Pulikkottil Jacob , Manik Jahagirdar , Vijay Venkataraman , Romi Srivastava
IPC分类号： B64F1/20 , H01L27/32 , H01L51/00 , G02F1/1333 , G09G5/02 , G09G5/37 , G01S19/46 , G01S19/45 , G09G3/00
摘要： A smart landing pad comprises a flexible display that shows images or patterns, and a protective layer over the display. The protective layer allows a UAV to land without damaging the display. Locator and range finder devices, coupled to the display, communicate with the UAV. The display is operative for wireless communications with a computer or mobile device that provides on-demand user functions, allowing for dynamically changing or customizing the images/patterns shown on the display. The images/patterns comprise a background area showing changeable images that match an environment where the landing pad is placed, and a target landing area surrounded by the background area. The target landing area includes a changeable insensitive, contrast portion, and changeable marker pattern portions having changeable colors/shapes. The images/patterns also include changeable QR codes on the target landing area. The display is IoT enabled so that data from the landing pad is remotely cloud accessible.
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公开(公告)号：US11024153B2
公开(公告)日：2021-06-01
申请号：US16845941
申请日：2020-04-10
摘要： A fall detection/fall indicator device that automatically senses when a user of fall protection equipment, such as a fall harness, has experienced an arrested fall, the fall harness having an electrical circuit that is a closed circuit in a first state and an open circuit in a second state after an arrested fall, and an alert device that is automatically responsive to the open circuit to emit an alert/alarm to other personnel that an arrested fall has been experienced.
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公开(公告)号：US10729922B2
公开(公告)日：2020-08-04
申请号：US16744292
申请日：2020-01-16
发明人： Steve Huseth , Hai Pham , Michael Seman , David Joseph Wunderlin
摘要： Embodiments relate generally to systems and methods for quickly detecting a fall and alerting appropriate parties of the fall. A fall protection device may comprise a fall detection module operable to sense when a fall occurs and generate wireless beacon, where the beacon may be received (or picked up) by any number of wireless devices, including wireless gateways, monitoring stations, and mobile devices.
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公开(公告)号：US10223898B2
公开(公告)日：2019-03-05
申请号：US16067441
申请日：2016-12-01
摘要： A fall detection/fall indicator device (20) that automatically senses when a user (14) of fall protection equipment, such as a fall harness (10), has experienced an arrested fall, the fall harness (10) having an electrical circuit (45) that is a closed circuit (46) in a first state and an open circuit (48) in a second state after an arrested fall, and an alert device (62) that is automatically responsive to the open circuit (48) to emit an alert/alarm to other personnel that an arrested fall has been experienced.
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