Granted Patent B2

US 12,553,749 · App. 18/273,254 · Granted Feb 17, 2026

Inventors: Tadayuki Iwano (Tokyo, JP); Yoshiaki Aono (Tokyo, JP)

Assignee: NEC CORPORATION

G01D5/35338G01H9/004G01V8/24

Abstract

Claims (50)

1 . A spatial sensing device comprising:

at least one memory configured to store instructions; and

at least one processor configured to execute the instructions to:

acquire sensing data based on optical fiber sensing using a first optical fiber cable laid in a first direction departing from a land surface or approaching the land surface and second optical fiber cable laid in a second direction that is not parallel to the first direction; and

detect a location of an object in a target space by using the sensing data,

wherein the location includes a first coordinate value corresponding to the first direction.

2 . The spatial sensing device according to claim 1 , wherein the target space is a two-dimensional plane corresponding to a coordinate plane including a first axis corresponding to the first direction and a second axis corresponding to a second direction, and

wherein the at least one processor detects a location of the object in the two- dimensional plane by using the sensing data.

3 . The spatial sensing device according to claim 1 , wherein the target space is a three-dimensional space corresponding to a coordinate space including a first axis corresponding to the first direction and a second axis and a third axis corresponding to directions different from each other, and

wherein the at least one processor detects a location of the object in the three- dimensional space by using the sensing data.

4 . The spatial sensing device according to claim 1 , wherein the first optical fiber cable is laid in a height direction of a high-rise building.

5 . The spatial sensing device according to claim 1 , wherein the second optical fiber cable is erected on a plurality of steel towers or on a plurality of power poles or is buried in ground.

6 . The spatial sensing device according to claim 1 , wherein the object is a flying body or a bird.

7 . The spatial sensing device according to claim 1 , wherein information indicating the location of the object is output.

8 . The spatial sensing device of claim 1 , wherein the sensing data includes at least-one of vibration, sound, or temperature based on distributed fiber optic sensing (DFOS).

9 . A spatial sensing device of claim 1 , wherein the object is separate from and moves relatively to the plurality of optical fiber cables.

10 . A spatial sensing system comprising:

at least one memory configured to store instructions; and

at least one processor configured to execute the instructions teto:

acquire sensing data based on optical fiber sensing using a first optical fiber cable laid in a first direction departing from a land surface or approaching the land surface and second optical fiber cable laid in a second direction that is not parallel to the first direction; and

detect a location of an object in a target space by using the sensing data,

wherein the location includes a first coordinate value corresponding to the first direction.

11 . The spatial sensing system according to claim 10 , wherein the target space is a two-dimensional plane corresponding to a coordinate plane including a first axis corresponding to the first direction and a second axis corresponding to a second direction, and

wherein the at least one processor detects a location of the object in the two-dimensional plane by using the sensing data.

12 . The spatial sensing system according to claim 10 , wherein the target space is a three-dimensional space corresponding to a coordinate space including a first axis corresponding to the first direction and a second axis and a third axis corresponding to directions different from each other, and

wherein the at least one processor detects a location of the object in the three-dimensional space by using the sensing data.

13 . The spatial sensing system according to claim 10 , wherein the first optical fiber cable is laid in a height direction of a high-rise building.

14 . The spatial sensing system according to claim 10 , wherein the second optical fiber cable is laid on a plurality of steel towers or on a plurality of power poles or is buried in ground.

15 . The spatial sensing system according to claim 10 , wherein the object is a flying body or a bird.

16 . The spatial sensing system according to claim 10 , wherein information indicating a location of the object is output.

17 . The spatial sensing system of claim 10 , wherein the sensing data includes at least one of vibration, sound, or temperature based on distributed fiber optic sensing (DFOS).

18 . A spatial sensing system of claim 10 , wherein the object is separate from and moves relatively to the plurality of optical fiber cables.

19 . A spatial sensing method comprising:

acquiring, by at least one memory configured to store instructions;, and at least one processor configured to execute the instructions, sensing data based on optical fiber sensing using a first optical fiber cable laid in a first direction departing from a land surface or approaching the land surface and second optical fiber cable laid in a second direction that is not parallel to the first direction; and

detecting, by the at least one processor, a location of an object in a target space by using the sensing data,

wherein the location includes a first coordinate value corresponding to the first direction.

20 . The spatial sensing method according to claim 19 , wherein the target space is a two-dimensional plane corresponding to a coordinate plane including a first axis corresponding to the first direction and a second axis corresponding to the second direction, and

wherein the at least one processor detects a location of the object in the two-dimensional plane by using the sensing data.

21 . The spatial sensing method according to claim 19 , wherein the target space is a three-dimensional space corresponding to a coordinate space including a first axis corresponding to the first direction and a second axis and a third axis corresponding to directions different from each other, and

wherein the at least one processor detects a location of the object in the three-dimensional space by using the sensing data.

22 . The spatial sensing method of claim 19 , wherein the sensing data includes at least one of vibration, sound, or temperature based on distributed fiber optic sensing (DFOS).

23 . A spatial sensing method of claim 19 , wherein the object is separate from and moves relatively to the plurality of optical fiber cables.

24 . A spatial sensor, comprising:

at least one memory configured to store instructions; and

at least one processor configured to execute the instructions to:

acquire sensing data from optical fiber cables oriented in different directions,

wherein the optical fiber cables include a first optical fiber cable laid in a first direction departing from a land surface or approaching the land surface, and

wherein the optical fiber cables define a target space; and

detect an object moving within and relatively to the target space based on the sensing data, wherein the object is remote from the optical fiber cables,

wherein the detected location of the object includes a first coordinate value corresponding to the first direction.

Assignments (1)

Continuity (1)

References Cited (10)