Sensor device, nontransitory recording medium, and presuming method

Patent metadata

Field	Value
Publication number	US-12468384-B2
Application number	US-202418795196-A
Country	US
Kind code	B2
Filing date	Aug 6, 2024
Priority date	Aug 10, 2023
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A sensor device includes a first inertial sensor that contacts a body of a user, a second inertial sensor that contacts a neck of the user, and circuitry that presumes a behavior of the user based on a first signal detected by the first inertial sensor and a second signal detected by the second inertial sensor.

First claim

The invention claimed is:

1 . A sensor device, comprising:
a first inertial sensor to contact a user; a second inertial sensor to contact the user; and circuitry configured to
presume a behavior of the user based on a first signal detected by the first inertial sensor and a second signal detected by the second inertial sensor;
detect first direction information of the user via the first inertial sensor;
detect second direction information of the user via the second inertial sensor;
communicate, with an information processing system through a network. positional information of the user and the first direction information, wherein the information processing system groups a plurality of users based on the positional information and the first direction information; and
presume a listening level of the user included in a group of the plurality of users based on the first direction information and the second direction information.

2 . The sensor device according to claim 1 , wherein
the first signal represents a first acceleration acting in a vertical direction of the user, the second signal represents a second acceleration acting in a front-back direction of the user, the behavior indicates the user nodding, and the circuitry is configured to presume the behavior based on the first acceleration and the second acceleration.

3 . The sensor device according to claim 1 , wherein
the first signal represents an acceleration acting in a vertical direction of the user, the second signal represents an angular velocity of rotation about an axis in a lateral direction of the user, the behavior indicates the user nodding, and the circuitry is configured to presume the behavior based on the acceleration and the angular velocity.

4 . The sensor device according to claim 1 , wherein the circuitry is further configured to:
calculate a frequency spectrum from each of the first signal and the second signal; and presume the behavior of the user nodding based on an intensity of the frequency spectrum calculated from each of the first signal and the second signal.

5 . The sensor device according to claim 1 , wherein
the first signal represents a first acceleration acting in a vertical direction of the user, the second signal represents a second acceleration acting in the vertical direction of the user, the behavior indicates the user leaning backward, and the circuitry is configured to presume the behavior of the user leaning backward based on the first acceleration and the second acceleration.

6 . The sensor device according to claim 1 , wherein
the first signal represents a first acceleration acting in a vertical direction of the user, the second signal represents a second acceleration acting in the vertical direction of the user, the behavior indicates the user leaning forward, and the circuitry is configured to presume the behavior based on the first acceleration and the second acceleration.

7 . The sensor device according to claim 1 , wherein
the first signal represents a first acceleration acting in a vertical direction of the user, the second signal represents a second acceleration acting in the vertical direction of the user, the behavior indicates the user leaning rightward or leftward, and the circuitry is configured to presume the behavior based on the first acceleration and the second acceleration.

8 . The sensor device according to claim 1 , wherein
the first signal represents a first acceleration acting in a vertical direction of the user, the second signal represents a second acceleration acting in the vertical direction of the user, and the behavior indicates the user standing and stooping, and the circuitry is configured to presume the behavior based on the first acceleration and the second acceleration.

9 . The sensor device according to claim 1 , wherein
the first signal represents a first angular velocity of rotation about an axis in a vertical direction of the user, the second signal represents a second angular velocity of rotation about the axis in the vertical direction of the user, the behavior indicates the user shaking their head, and the circuitry is configured to presume the behavior based on the first angular velocity and the second angular velocity.

10 . The sensor device according to claim 1 , wherein
the first signal represents a first acceleration acting in a vertical direction of the user, the second signal represents a second acceleration acting in the vertical direction of the user, the behavior indicates the user cocking their head, and the circuitry is configured to presume the behavior based on the first acceleration and the second acceleration.

11 . The sensor device according to claim 1 , wherein
the first inertial sensor includes:
a microphone; and
circuitry configured to acquire utterance data of the user acquired by the microphone, and
when the presumed behavior and the acquired utterance data are registered in behavior utterance information associating a type of behavior with utterance data that reinforces the behavior, the circuitry is configured to determine that the presumed behavior is stronger than the behavior presumed when the utterance data associated with the behavior is not acquired.

12 . The sensor device according to claim 1 , wherein
the second inertial sensor detects vital data of the user, and the circuitry is configured to presume psychological safety of the user in a group of users based on the vital data.

13 . The sensor device according to claim 1 , wherein when the circuitry presumes the behavior, the circuitry is configured to output by light, sound, or vibration that the behavior is presumed.

14 . The sensor device according to claim 1 , wherein the circuitry is further configured to transmit behavior information related to the presumed behavior to the information processing system, the information processing system transmitting the behavior information to a second sensor device different from the sensor device that has transmitted the behavior information and in a same group as the sensor device, the second sensor device outputting light, sound, or vibration according to the behavior information.

15 . The sensor device according to claim 1 , wherein the first inertial sensor and the second inertial sensor are coupled to each other via a serial cable into a necklace shape to communicate with each other.

16 . The sensor device according to claim 1 , further comprising:
a dummy having a same shape as the second inertial sensor and not including a sensor, wherein the dummy and the second inertial sensor are symmetrically disposed with respect to a neck of the user, and first inertial sensor, the second inertial sensor, and the dummy have a necklace shape.

17 . A non-transitory recording medium storing a plurality of instructions which, when executed by one or more processors, causes the one or more processors to perform a presuming method, the method comprising:
presuming a behavior of a user based on a first signal detected by a first inertial sensor configured to contact the user and a second signal detected by a second inertial sensor configured to contact the user; detecting first direction information of the user via the first inertial sensor; detecting second direction information of the user via the second inertial sensor; communicating, with an information processing system through a network, positional information of the user and the first direction information, wherein the information processing system g

Assignees

• Kimura Yuta
• Murata Haruki
• Ricoh Co Ltd

Inventors

• Kimura Yuta
• Murata Haruki

Classifications

• G06F3/167

  Audio in a user interface, e.g. using voice commands for navigating, audio feedback · CPC title

• G06F3/017

  Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883) · CPC title

• A61B5/746

  Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms · CPC title

• A61B5/02438

  with portable devices, e.g. worn by the patient · CPC title

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title