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US 10,852,276 B2Granted
Holistic sensing method and system
AssigneeHitachi, Ltd.
InventorsYasutaka Serizawa, Sudhanshu Gaur, Yusuke Shomura
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Abstract
Systems and methods described herein are directed to a specialized Internet of Things (IoT) device deploying both acoustic and radio wave signals. In example implementations described herein, camera data and acoustic sensor data is integrated to generate an acoustic sensor heatmap for the holistic sensing systems in an IoT area.
Claims18
A device configured to calculate direction of arrival (DOA) of acoustic waves and facilitate beamforming functionalities, comprising:
- an array of acoustic sensors configured to detect acoustic wave signals;
- a 3-dimensional accelerometer and magnetometer;
- an antenna configured to transmit and receive radio wave signals;
- an acoustic speaker configured to transmit acoustic wave signals;
- and
- a processor, configured to:
- simultaneously transmit an acoustic wave signal from the acoustic speaker and a radio wave signal from the antenna;
- detect another acoustic wave signal from the array of acoustic sensors and another radio wave signals from the antenna;
- determine a distance and a direction to another device that transmitted the another acoustic wave signal and the another radio wave signal based on an arrival difference between the another acoustic wave signal and the another radio wave signal;
- and
- transmit, to a gateway, the determined distance and the determined direction, and measurements from the 3-dimensional accelerometer and magnetometer.
8 more elements
A system, comprising:
- a plurality of devices configured to calculate direction of arrival (DOA) of acoustic waves and facilitate beamforming functionalities;
- and
- a server configured to interact with the plurality of devices, the server comprising:
- a processor configured to:
- transmit a command to the plurality of devices to simultaneously broadcast an acoustic wave signal and a radio wave signal;
- receive information regarding detected acoustic wave signals and detected radio wave signals, and 3-dimensional accelerometer and magnetometer measurements from each of the plurality of devices;
- and
- for the information indicative of each of the plurality of devices having at least one acoustic connection with another one of the plurality of devices, determine a position for each of the plurality of devices.
5 more elements
A method, comprising:
- transmitting a command to the plurality of devices to simultaneously broadcast an acoustic wave signal and a radio wave signal;
- receiving information regarding detected acoustic wave signals and detected radio wave signals, and 3-dimensional accelerometer and magnetometer measurements from each of the plurality of devices;
- and
- for the information indicative of each of the plurality of devices having at least one acoustic connection with another one of the plurality of devices, determining a position for each of the plurality of devices.
1 more element
Dependencies are inferred from the claim text.