JP7390604B2 - Estimation method, estimation device, and program - Google Patents

Description

The present disclosure relates to an estimation method, an estimation device, and a program, and particularly relates to an estimation method, an estimation device, and a program that estimate a planar shape, etc. in a target area using a sensor that estimates the position of a living body using a wireless signal. .

BACKGROUND ART Methods have been disclosed for estimating the position, posture, or behavior of a living body in a room using wireless signals (see, for example, Patent Documents 1 to 3). For example, Patent Document 1 discloses a method of detecting a living body using a Doppler sensor. Further, Patent Document 2 discloses a method of detecting human motion or biological information using a Doppler sensor and a filter. Further, Patent Document 3 discloses a method of knowing the position or state of a person to be detected by analyzing components including Doppler shift using Fourier transform.

Special table 2014-512526 publication International Publication No. 2014/141519 Japanese Patent Application Publication No. 2015-117972 Japanese Patent Application Publication No. 2011-215031 JP2015-59812A JP2008-275324A

However, in the conventional techniques disclosed in Patent Documents 1 to 3, in order to estimate the position or situation of a living body indoors using wireless signals, a target area that is an area for estimating the position of a living body, etc. Information regarding the target area, including the shape of the target area, must be accurately input and known in advance. Furthermore, the shape of a room or the like, that is, the shape of the target area is often not rectangular. For this reason, there is also the problem that it is troublesome to input information regarding the target area accurately.

The present disclosure has been made in view of the above circumstances, and provides an estimation method, an estimation device, and a program that can easily and highly accurately estimate information regarding a target area using radio signals. With the goal.

In order to achieve the above object, an estimation method, etc. according to an embodiment of the present disclosure is an estimation method that estimates information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves. acquires first information regarding the length forming the planar shape of the target area, acquires second information regarding the installation state of a transmitting antenna and a receiving antenna included in the estimation device, and determines whether the living body is in a predetermined position in the target area. acquiring third information regarding a trajectory consisting of a plurality of positions of the living body estimated by the estimation device when moving along a route, and using the acquired first information, second information, and third information; Based on the information regarding the target area, at least one of (1) estimating the planar shape by correcting the first information, and (2) estimating the installation state by correcting the second information. Do it as an estimate.

Note that these general or specific aspects may be realized by an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM. It may be realized by any combination of programs and recording media.

According to the estimation method and the like of the present disclosure, information regarding a target area can be estimated easily and with high accuracy using radio signals.

FIG. 1 is a block diagram showing an example of the configuration of an estimation device according to the first embodiment. FIG. 2 is a schematic diagram conceptually showing a space in which the estimation device according to the first embodiment is installed. FIG. 3 is a block diagram showing an example of a detailed configuration of the processing section according to the first embodiment. FIG. 4 is a flowchart showing an overview of the processing of the estimation device according to the first embodiment. FIG. 5 is a flowchart showing specific aspects of steps S1 and S2 shown in FIG. FIG. 6 is a schematic diagram showing an example of first information and second information that are initially input in steps S1 and S2 shown in FIG. FIG. 7 is a flowchart showing specific aspects of steps S3 and S4 shown in FIG. FIG. 8 is a schematic diagram showing an example of the route instructed in step S3 and the calculation result performed in step S4 shown in FIG. FIG. 9A is a schematic diagram showing another example of the route instructed in step S3 and the calculation result performed in step S4 shown in FIG. FIG. 9B is a schematic diagram showing another example of the route instructed in step S3 shown in FIG. FIG. 10 is a flowchart showing another specific aspect of steps S3 and S4 shown in FIG. FIG. 11 is a schematic diagram showing an example of the route instructed in step S3A shown in FIG. 10. FIG. 12A is a flowchart illustrating a processing overview of the estimation device according to Modification 1 of Embodiment 1. FIG. 12B is a flowchart showing a specific aspect of step S5 shown in FIG. 12A. FIG. 13 is a schematic diagram showing an example of a target area, a predetermined route, and a specific area according to the second modification of the first embodiment.

(Findings that formed the basis of this disclosure)
The inventors have developed a detailed method for the prior art disclosed in Patent Documents 1 to 3 mentioned above, that is, a method of estimating the position, posture, or behavior of a living body in a room using wireless signals. We conducted a thorough study.

As a result, in order to estimate the position or situation of a living body in a room using the conventional techniques disclosed in Patent Documents 1 to 3, information regarding the target area to be sensed by a device that can estimate the position of the living body, that is, a sensor, is required. It turns out that it is necessary to enter it accurately in advance and make it known. Here, the information regarding the target area includes the position and orientation of the sensor, floor plan information of the room to be sensed, and the like.

However, if the shape of the room to be sensed is not rectangular such as a square, or if the shape of the room is rectangular but there are many obstacles such as furniture, the floor plan of the room cannot be accurately illustrated. It takes time to understand this. Therefore, it is difficult for the sensor user to accurately input information regarding the target area, such as floor plan information of the room.

Furthermore, if the position or orientation of the sensor input as information regarding the target area is incorrect, or if the error in the input sensor position or orientation is large, the sensor may not be able to accurately estimate the position of the living body. Understood.

By the way, for example, Patent Document 4 discloses a device that uses a Doppler sensor to estimate the presence or absence, rest, and activity status of a person. However, the device disclosed in Patent Document 4 has a problem in that the situation such as the position or posture of the user is not known.

Note that as a method of knowing the position of a living body, there is also a method of using equipment such as a vibration sensor or a camera (see, for example, Patent Documents 5 and 6). For example, Patent Document 5 discloses a device that estimates the position of a person using a vibration sensor, and Patent Document 6 discloses a device that estimates the position of a person and an object using a camera and an RF tag. Disclosed.

However, according to the device disclosed in Patent Document 5, it is possible to estimate the position of the living body using a vibration sensor and to estimate the self-position by tapping the sensor installation location. There is a problem in that the external shape must be entered manually.

Further, according to the device disclosed in Patent Document 6, although it is possible to estimate the movement of people and luggage using electronic tags and camera images, it is necessary to take images of people and luggage, so privacy is compromised. There are challenges.

As a result of repeated research on the above issues, the inventors determined the shape of the target area using the propagation characteristics of the reflected signal transmitted from a transmitting antenna including an antenna element placed in the target area and reflected by the living body. The present disclosure has been made based on the discovery that it is possible to obtain or correct information related to the invention.

That is, an estimation method according to an aspect of the present disclosure is an estimation method that estimates information regarding a target region using an estimation device that estimates information including the position of a living body using radio waves, and the estimation method estimates information regarding a target region. and second information regarding the installation state of a transmitting antenna and a receiving antenna of the estimating device, and when the living body moves along a predetermined route in the target area, Obtain third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device, and based on the obtained first information, second information, and third information, (1) (2) estimation of the installation state by correcting the second information; and (2) estimation of the installation state by correcting the second information.

Thereby, information regarding the target area can be estimated easily and with high accuracy using radio signals. More specifically, by using wireless signals, it is possible to easily and highly accurately estimate, for example, the planar shape such as the external shape or the installation state such as the installation position, as information regarding the target area where biological sensing is desired. .

Here, for example, the predetermined route is a route in which the living body passes through the center of the target region, and the predetermined route is a route that the living body passes through the center of the target region, and the predetermined route is a route that the living body passes through the center of the target region, and the predetermined route is a route that the living body passes through the center of the target region, and By correcting the second information based on the first information, the second information, and the third information, the installation state including the installation position of the transmitting antenna and the receiving antenna can be estimated based on the information regarding the target area. Do it as an estimate.

Further, for example, the predetermined route is a route along the outer periphery of the target area in which the living body can move in the target area, and when at least one of the planar shape estimation and the installation state estimation is performed, The planar shape is estimated by correcting the first information based on the acquired first information, second information, and third information.

Further, for example, the installation state may include at least one of a position, a height, and an angle at which the transmitting antenna and the receiving antenna are installed.

Further, for example, the target area is one or more rooms indoors, and further, when the living body is kept stationary at the position of an installation installed in the target area, the estimated by the estimation device is acquiring fourth information indicating the position of the living body, associating the fourth information with information identifying the installed object or a room in which the installed object is installed among the one or more rooms, and storing the information in a storage unit; You may remember it.

Further, for example, the fourth information may be further displayed on a display device as information indicating the position of the installation object or the position of the room in which the installation object is installed, and the fourth information may be displayed as information indicating the position of the installation object input by the user or Modification information regarding the position of the room may be received, and the fourth information may be modified based on the received modification information.

Further, for example, when the living body is stopped at a position facing a predetermined direction when viewed from the center of the target area, the position of the living body estimated by the estimation device is acquired; The direction toward the position of the living body and the predetermined orientation may be associated with each other and stored in the storage unit as the orientation of the target area.

Here, for example, the estimating device estimates the position of the living body based on a signal component influenced by the living body, which is extracted by a predetermined method from the signal received by the receiving antenna.

Further, an estimation device according to an aspect of the present disclosure estimates information regarding a target area using a position estimation unit that includes a transmitting antenna and a receiving antenna and estimates information including a position of a living body using radio waves. The apparatus acquires first information regarding a length forming a planar shape of the target area, acquires second information regarding an installation state of the transmitting antenna and the receiving antenna, and determines that the living body is in a predetermined position in the target area. an acquisition unit that acquires third information regarding a trajectory consisting of a plurality of positions of the living body estimated by the position estimation unit when moving along a route; and the acquired first information, the second information, and Based on the third information, at least one of (1) estimation of the planar shape by correcting the first information, and (2) estimation of the installation state by correcting the second information, is performed. A correction estimation unit that performs estimation of information regarding the target area.

Further, a program according to an aspect of the present disclosure is a program that causes a computer to execute an estimation method for estimating information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves, a step of acquiring first information regarding the length forming the planar shape of the target area; a step of acquiring second information regarding the installation state of a transmitting antenna and a receiving antenna included in the estimation device; a step of acquiring third information regarding a trajectory consisting of a plurality of positions of the living body estimated by the estimation device when moving along a predetermined route; and the acquired first information, the second information, and the acquired information. Based on the third information, at least one of (1) estimation of the planar shape by correcting the first information, and (2) estimation of the installation state by correcting the second information is performed on the object. The computer is caused to perform the step of estimating information regarding the area.

Note that the present disclosure can be realized not only as a device, but also as an integrated circuit including processing means included in such a device, or as a method in which the processing means constituting the device is a step, or as a method in which the processing means constituting the device is a step. It can also be realized as a program for a computer to execute, or as information, data, or signals indicating the program. These programs, information, data, and signals may be distributed via a recording medium such as a CD-ROM or a communication medium such as the Internet.

Embodiments of the present disclosure will be described in detail below with reference to the drawings. Note that each of the embodiments described below represents a preferred specific example of the present disclosure. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are examples, and do not limit the present disclosure. Furthermore, among the constituent elements in the embodiments below, constituent elements that are not described in the independent claims representing the most important concept of the present disclosure will be described as arbitrary constituent elements constituting a more preferable embodiment. Note that, in this specification and the drawings, components having substantially the same functional configurations are designated by the same reference numerals and redundant explanation will be omitted.

(Embodiment 1)
In the following, an estimation method and the like of the estimation device 10 according to the first embodiment will be explained with reference to the drawings.

[Configuration of estimation device 10]
FIG. 1 is a block diagram showing an example of the configuration of an estimation device 10 in the first embodiment. FIG. 2 is a schematic diagram conceptually showing a space in which the estimation device 10 according to the first embodiment is installed.

The estimation device 10 shown in FIG. Estimate information. Here, the target area 100 is a space to be sensed by the estimation device 10, and is, for example, a room in which the estimation device 10 is installed, as shown in FIG. The target area 100 may be one or more rooms indoors. The information regarding the target area 100 may be, for example, the planar shape (external shape) of the target area 100, or the installation state of the transmitting antenna 61 and the receiving antenna 62 installed in the target area 100, although the details will be described later. You can. The detailed configuration of the estimation device 10 will be described below.

[Input section 30]
The input unit 30 receives first information regarding the length forming the planar shape of the target region 100, and transmits the input first information to the processing unit 20. Further, the input unit 30 receives second information regarding the installation state of the transmitting antenna 61 and the receiving antenna 62, and transmits the input second information to the processing unit 20. In the present embodiment, the input unit 30 initially receives first information regarding the vertical and horizontal lengths of the rectangle 1001 shown in FIG. 2 as the first information regarding the length forming the planar shape of the target region 100. The input unit 30 also outputs at least one of the positions, heights, and angles (hereinafter referred to as installation positions, installation heights, and installation angles) at which the transmitting antenna 61 and the receiving antenna 62 are installed as second information regarding the installation state. is input.

The input unit 30 includes an interface for transmitting information including input first information and second information to the processing unit 20. The input unit 30 may include an interface, such as a keyboard or a touch pad, through which information is input by being directly operated by the user of the estimation device 10. The input unit 30 may also include an interface that connects to other electronic devices or a communication medium such as the Internet to receive information (that is, information is input).

Furthermore, the input unit 30 may be a device that reads information recorded on a recording medium in advance from the storage medium and transmits the read information to the processing unit 20.

Note that the input unit 30 may be arranged at the same position as the processing unit 20 and the position estimation unit 60 that constitute the estimation device 10, or as shown in FIG. 20 and the position estimating unit 60 may be located at a different and distant position. In other words, the input unit 30 may be configured to be physically integrated with the estimating device 10, or may be arranged at a different location from the estimating device 10. When the input unit 30 is located at a different location from the processing unit 20 and the position estimating unit 60, the input unit 30 remotely transmits input information to the processing unit 20.

[Output section 40]
The output unit 40 includes an interface for outputting information indicating processing results of the processing unit 20 or instructions to the user. Here, the user is an example of the living body 200 shown in FIG. 2, and operates the estimation device 10 within the target region 100.

The output unit 40 may include an interface such as a display or a speaker that directly presents information to the user, or may include an interface that outputs information by connecting to other electronic devices or communication media such as the Internet. You may be prepared.

Note that the output unit 40 may be a device integrated with the input unit 30, such as a smartphone or a computer. In other words, the output unit 40 may be placed at the same location as the processing unit 20 and the position estimation unit 60 that make up the estimation device 10, or as shown in FIG. The unit 20 and the position estimating unit 60 may be located at a different and distant position. When the output unit 40 is located at a different location from the processing unit 20 and the position estimating unit 60, the output unit 40 remotely receives information to be output from the processing unit 20.

In the present embodiment, the output unit 40 outputs, as information for instructing the user, information indicating an instruction to move along a predetermined route, and the location of an installation installed in the target area 100. For example, information indicating an instruction to stand still is output. Here, the predetermined route may be a route in which the living body 200 passes through the center of the target area 100, or may be a route along the outer periphery of the target area 100 in which the living body 200 is movable in the target area 100. Moreover, the installed object may be furniture in the room such as a bed or a chair, or may be a toilet, kitchen, washing machine, bathtub, or the like.

Further, the output unit 40 outputs, as information indicating the processing result of the processing unit 20, information indicating the estimated planar shape of the target area or information indicating the estimated installation state.

Note that the output unit 40 may output information indicating an instruction to input the first information, the second information, and the third information.

Further, the output unit 40 may present the information stored in the storage unit 50 or display it on another display device. For example, the output unit 40 may display the fourth information indicating the position of the living body 200 corresponding to the position of the installed object on its own or on a display device as information indicating the position of the installed object or the position of the room in which the installed object is installed. It may be displayed. Then, when correction information for the position of the displayed installation object or the position of the room is received, the received correction information may be transmitted to the processing unit 20. The modification information is not limited to the case where the output unit 40 or the display device receives it, but the input unit 30 may also receive it. Further, the correction information may be input by the living body 200 or may be input by a user of the estimation device 10 different from the living body 200.

[Storage unit 50]
The storage unit 50 is composed of a nonvolatile storage area (auxiliary storage device), and stores information used in various processes performed by the estimation device 10. The storage unit 50 is, for example, a ROM (Read Only Memory), a flash memory, an HDD (Hard Disk Drive), or the like.

In the present embodiment, the storage unit 50 includes first information regarding the length forming the planar shape of the target region, second information regarding the installation state of the transmitting antenna 61 and the receiving antenna 62, and a plurality of positions of the living body 200. It stores third information regarding the trajectory.

Further, the storage unit 50 may store fourth information indicating the position of the living body 200 corresponding to the position of the installed object and information identifying the installed object or the room in which the installed object is installed, in association with each other. Furthermore, the storage unit 50 may store the orientation of the target area 100. In this case, the storage unit 50 stores the orientation of the target area 100 by associating the direction from the center of the target area 100 toward the position of the living body 200 in a predetermined orientation as seen from the center with the predetermined orientation. do.

Note that the storage unit 50 may store a program for operating the processing unit 20, the input unit 30, the output unit 40, and the position estimation unit 60. Further, the storage unit 50 may not be included in the estimation device 10, but may be included in a cloud or an external server device.

[Position estimation unit 60]
The position estimation unit 60 estimates information including the position of the living body 200 using radio waves, that is, wireless signals. More specifically, the position estimating unit 60 has a transmitting antenna 61 and a receiving antenna 62 arranged within the target area 100, and estimates the position of the living body 200 using a wireless signal. The position estimating unit 60 may be, for example, a position estimating device that estimates the position of the living body 200 using a wireless signal, or may be a sensor that estimates the position of the living body 200 using a wireless signal.

The position estimation unit 60 estimates the position of the living body 200 based on the signal component influenced by the living body 200, which is extracted by a predetermined method from the signal received by the receiving antenna 62. More specifically, the position estimating unit 60 transmits radio waves (wireless signals) such as those disclosed in Patent Document 3 from a transmitting antenna 61, and calculates Doppler shift components contained in reflected waves received by a receiving antenna 62. By analyzing this, the position of the living body 200 to be detected is estimated.

In this embodiment, the transmitting antenna 61 and the receiving antenna 62 are arranged at both ends of one side of the target area 100, such as the side 1004, for example, as shown in FIG. The position estimation unit 60 is controlled by the processing unit 20 and estimates a plurality of positions of the living body 200 when the living body 200 moves along a predetermined route in the target region 100. Further, the position estimation unit 60 is controlled by the processing unit 20 and estimates the position of the living body 200 when the living body 200 is kept stationary at the position of an installation object installed in the target area 100. Note that the position estimation unit 60 may be controlled by the processing unit 20 to estimate the position of the living body 200 when the living body 200 is kept stationary in the specific area 110 within the target area 100. Here, the specific area 110 shown in FIG. 2 may be a room included in the target area 100, or may be an area included in the target area 100 whose position or external shape is desired to be grasped. . For example, the specific area 110 may be an area such as a room with a toilet or a bathroom, or an area indicating furniture in the room such as a bed or a chair.

Further, the position estimation unit 60 may be controlled by the processing unit 20 to estimate the position of the living body 200 when the living body 200 is stopped at a position facing a predetermined direction when viewed from the center of the target region 100. Here, the predetermined direction is, for example, north of north, south, east, and west.

[Processing unit 20]
The processing unit 20 executes various processes for operating the estimation device 10. The processing unit 20 includes, for example, a processor that executes a control program, and a volatile storage area (main memory) used as a work area when executing the control program. The volatile storage area is, for example, RAM (Random Access Memory).

Note that the processing unit 20 may be constituted by a dedicated circuit for performing various processes for operating the estimation device 10. That is, the processing unit 20 may be a circuit that performs software processing or a circuit that performs hardware processing.

FIG. 3 is a block diagram showing an example of a detailed configuration of the processing unit 20 according to the first embodiment. The processing unit 20 shown in FIG. 2 includes an acquisition unit 201, a movement instruction unit 202, a calculation unit 203, a correction estimation unit 204, and a registration processing unit 205. The detailed configuration will be explained below.

<Acquisition unit 201>
The acquisition unit 201 acquires first information regarding the length forming the planar shape of the target region 100 from the input unit 30 . In the example shown in FIG. 2, since inputting the exact length of the planar shape of the target area 100 is complicated, the length of the planar shape of the rectangle 1001 is initially input. That is, the acquisition unit 201 acquires, from the input unit 30, first information regarding the vertical and horizontal lengths of the rectangle 1001 that is initially input to the input unit 30.

The acquisition unit 201 also acquires second information regarding the installation state of the transmitting antenna 61 and the receiving antenna 62 included in the position estimating unit 60 from the input unit 30. In the example shown in FIG. 2, the acquisition unit 201 acquires information from the input unit 30 that includes at least one of the installation position, height, and angle at which the transmitting antenna 61 and the receiving antenna 62, which are initially input to the input unit 30, are installed. Obtain second information regarding the state.

The acquisition unit 201 also acquires third information regarding a trajectory composed of a plurality of positions of the living body 200 estimated by the position estimating unit 60 when the living body 200 moves along a predetermined route in the target area 100. As described above, the predetermined route may be a route passing through the center of the target area 100, or may be a route along the outer periphery of the movable target area 100.

Note that the acquisition unit 201 acquires fourth information indicating the position of the living body 200 estimated by the position estimation unit 60 when the living body 200 is kept stationary at the position of the installation object installed in the target area 100. Good too. Further, the acquisition unit 201 may acquire the position of the living body 200 estimated by the position estimating unit 60 when the living body 200 is stopped at a position facing a predetermined direction as viewed from the center of the target area 100.

<Movement instruction section 202>
The movement instruction unit 202 generates information that instructs the living body 200 to move along a predetermined route or to move to a predetermined position and stand still.

In the present embodiment, movement instruction unit 202 generates information indicating an instruction for living body 200 to move along a predetermined route in target area 100 and transmits it to output unit 40 . Further, the movement instruction unit 202 may generate information indicating the position of an installation installed in the target area 100 or an instruction to remain stationary in the specific area 110, and may transmit the information to the output unit 40. Further, the movement instruction unit 202 may generate information indicating an instruction to stand still at a position facing a predetermined direction when viewed from the center of the target area 100, and may transmit the information to the output unit 40.

<Calculation unit 203>
The calculation unit 203 calculates the length forming the planar shape of the target region 100 included in the first information.

In the present embodiment, the calculation unit 203 calculates, for example, the length of the side 1004 included in the first information, based on the third information regarding the trajectory composed of a plurality of positions of the living body 200, which is acquired by the acquisition unit 201. Calculate. Note that the calculation unit 203 calculates the length of the side 1004 anew even though the first information regarding the vertical and horizontal lengths of the rectangle 1001 shown in FIG. 2 has been initially input. This is because the length of the rectangle 1001 that is initially input by the living body 200 as first information may include a measurement error, or the installation positions of the transmitting antenna 61 and receiving antenna 62 may include a deviation. It is from.

Note that the calculation unit 203 calculates the installation positions or installation angles of the transmitting antenna 61 and the receiving antenna 62 based on the third information regarding the trajectory composed of a plurality of positions of the living body 200 acquired by the acquisition unit 201. You can.

<Correction estimation unit 204>
The correction estimation unit 204 calculates the planar shape (external shape) of the target area 100 or the transmitting antenna 61 and receiving antenna installed in the target area 100 based on the first information, second information, and third information acquired by the acquiring unit 201. Information regarding the target area 100, such as the installation state of 62, is estimated. More specifically, the correction estimation unit 204 estimates the information regarding the target region 100 based on the first information, second information, and third information, and (1) corrects the first information to estimate the planar shape. At least one of estimation and (2) estimation of the installation state is performed by correcting the second information.

For example, the acquisition unit 201 configures the predetermined route from a plurality of positions of the living body 200 estimated by the position estimating unit 60 when the living body 200 moves in the target area 100 along a route passing through the center of the target area 100. Assume that third information regarding the trajectory has been acquired. In this case, the correction estimation unit 204 estimates the installation state including the installation positions of the transmitting antenna 61 and the receiving antenna 62 by correcting the second information based on the first information, the second information, and the third information. .

Further, for example, when the acquisition unit 201 moves a route along the outer periphery of the target area 100 in which the living body 200 can move in the target area 100, the plurality of living bodies 200 estimated by the position estimation unit 60 may be Assume that third information regarding the trajectory consisting of the positions of is acquired. In this case, the correction estimation unit 204 estimates the planar shape (outer shape) of the target area 100 by correcting the first information based on the first information, the second information, and the third information.

In this embodiment, the correction estimation unit 204 estimates the length of the side 1004 on which the transmitting antenna 61 and the receiving antenna 62 shown in FIG. The corrected area may be estimated as the outer shape of the target area 100.

More specifically, the correction estimation unit 204 estimates the length of the side 1004 calculated by the calculation unit 203 to be the more accurate length of the side 1004, and uses the target initially input as the first information. The horizontal length of the region 100 may be corrected. Note that the correction estimating unit 204 corrects the first information by replacing the horizontal length of the target area 100 that was initially input as the first information with the length of the side 1004 calculated by the calculating unit 203. Good too.

Further, the correction estimating unit 204 estimates the installation positions or installation angles of the transmitting antenna 61 and the receiving antenna 62 calculated by the calculation unit 203 to be more accurate installation positions or installation angles of the transmitting antenna 61 and the receiving antenna 62. You may. Then, the correction estimating unit 204 converts the installation position or installation angle of the transmitting antenna 61 and receiving antenna 62, which was initially input as second information, into the installation position or installation angle of the transmitting antenna 61 and receiving antenna 62 calculated by the calculation unit 203. The angle may be corrected.

Further, the correction estimating unit 204 calculates a trajectory including a plurality of positions of the living body 200 when the living body 200 moves along a route along the outer periphery of the target area 100, which is shown in the third information. It may be assumed that In this case, the correction estimation unit 204 may use the trajectory to correct the length forming the planar shape of the target area 100 that is initially input as the first information. For example, in the example shown in FIG. 2, the correction estimation unit 204 uses the trajectory to determine the length of the right side and the length of the top side among the lengths of the four sides forming the rectangle 1001 that was initially input as the first information. The area obtained by shortening the area may be estimated as the planar shape of the target area 100.

<Registration processing unit 205>
The registration processing unit 205 performs a registration process of registering the position of the installation object in the target area 100 or the position of the specific area 110 in the target area 100. For example, the registration processing unit 205 associates fourth information indicating the position of the living body 200 corresponding to the position of the installed object with information identifying the installed object or a room in which the installed object is installed among one or more rooms. The position of the installed object is registered by storing it in the storage unit 50. In other words, the registration processing unit 205 stores the fourth information in the storage unit 50 in association with each other in this way, so that the fourth information indicating the position of the living body 200 corresponding to the position of the installed object can be stored in the storage unit 50 in association with the installed object. The information can be information indicating the location of the room where the information is displayed.

Note that the fourth information registered as information indicating the position of the installed object or the position of the room in which the installed object is installed may be modified by the living body 200 or the user of the estimation device 10 different from the living body 200. good. In other words, when correction information regarding the position of the installation object or the position of the room is received by the output unit 40 or the like, the fourth information may be corrected based on the received correction information.

Further, the registration processing unit 205 may perform a registration process of registering the orientation of the target area 100. For example, assume that the acquisition unit 201 acquires the position of the living body 200 estimated by the position estimating unit 60 when the living body 200 is stopped at a position facing a predetermined direction as viewed from the center of the target area 100. In this case, the registration processing unit 205 associates the direction from the center of the target area 100 toward the position of the living body 200 with a predetermined orientation, and stores this in the storage unit 50 as the orientation of the target area 100. 100 directions may be registered.

[Operation, etc. of estimation device 10]
A process in which the estimation device 10 configured as described above estimates information regarding the target area 100 will be described.

FIG. 4 is a flowchart showing an overview of the processing of the estimation device 10 according to the first embodiment.

First, as shown in FIG. 4, the estimation device 10 acquires first information regarding the length forming the planar shape of the target region 100 (S1). Next, the estimation device 10 acquires second information regarding the installation state of the transmitting antenna 61 and the receiving antenna 62 (S2). Next, the estimation device 10 acquires third information regarding a trajectory composed of a plurality of positions of the living body 200 estimated by the position estimating unit 60 when the living body 200 moves along a predetermined route in the target area 100 ( S3). Next, the estimation device 10 performs at least one of estimating the planar shape of the target area 100 by correcting the first information, and estimating the installation state of the transmitting antenna 61 and the receiving antenna 62 by correcting the second information (S4 ). In this way, in step S4, the estimation device 10 estimates information regarding the target area 100.

Hereinafter, specific aspects of steps S1 to S4 shown in FIG. 4 will be explained using the drawings.

FIG. 5 is a flowchart showing specific aspects of steps S1 and S2 shown in FIG. FIG. 6 is a schematic diagram showing an example of first information and second information that are initially input in steps S1 and S2 shown in FIG. Note that in FIG. 6, elements similar to those in FIG. 2 are denoted by the same reference numerals, and detailed explanations will be omitted.

In step S1, first, the vertical and horizontal lengths of the rectangle 1001 including the target area 100 are input into the input unit 30 as initial input by the user of the estimation device 10 (S11). In the example shown in FIG. 6, the length and width of the rectangle 1001 are length L1 and length L2. The input unit 30 transmits the vertical and horizontal lengths of the input rectangle 1001 to the processing unit 20. Note that the output unit 40 may output an instruction to the user to initially input first information regarding the length forming the planar shape of the target area 100. This allows the user to initially input the first information at an appropriate timing.

Next, the estimation device 10 acquires the vertical and horizontal lengths of the rectangle 1001 including the target area 100 input in step S11 as first information regarding the length forming the planar shape of the target area 100 (S12). More specifically, the processing unit 20 acquires the vertical and horizontal lengths of the rectangle 1001 input in step S11 as first information regarding the length forming the planar shape of the target area 100, and uses the acquired first information. is recorded in a volatile storage area (not shown) inside the processing unit 20 or in the storage unit 50.

Next, in step S2, the user of the estimation device 10 inputs the installation positions, installation heights, and installation angles of the transmitting antenna 61 and the receiving antenna 62 into the input unit 30 (S21). FIG. 6 shows an angle θ1 indicating the front direction of the transmitting antenna 61 and an angle θ2 indicating the front direction of the receiving antenna 62 as an example of the installation angle of the transmitting antenna 61 and the receiving antenna 62. Further, the installation positions of the transmitting antenna 61 and the receiving antenna 62 may be, for example, the coordinates within the target area 100 or the length of the side 1004. The input unit 30 transmits the input installation positions, installation heights, and installation angles of the transmitting antenna 61 and the receiving antenna 62 to the processing unit 20. Note that the output unit 40 may output an instruction to the user to initially input second information regarding the installation state of the transmitting antenna 61 and the receiving antenna 62. This allows the user to initially input the second information at an appropriate timing.

Next, the estimation device 10 acquires the installation position, installation height, and installation angle of the transmitting antenna 61 and receiving antenna 62 input in step S21 as second information regarding the installation state of the transmitting antenna 61 and receiving antenna 62 ( S22). More specifically, the processing unit 20 converts the installation position, installation height, and installation angle of the transmission antenna 61 and reception antenna 62 input in step S21 into second information regarding the installation state of the transmission antenna 61 and reception antenna 62. , and records it in the volatile storage area inside the processing unit 20 or the storage unit 50.

FIG. 7 is a flowchart showing specific aspects of steps S3 and S4 shown in FIG.

FIG. 8 is a schematic diagram showing an example of the route instructed in step S3 and the calculation result performed in step S4 shown in FIG. Note that in FIG. 8, elements similar to those in FIG. 2 are denoted by the same reference numerals, and detailed explanations will be omitted.

In step S3, the estimation device 10 first instructs the user to move along the route 1002A shown in FIG. 8 as a predetermined route in the target area 100 (S31). More specifically, the processing unit 20 generates information instructing movement along the route 1002A shown in FIG. 8, and transmits it to the output unit 40. Thereby, the output unit 40 can instruct the living body 200, which is the user, to move along the route 1002A shown in FIG. 8.

Here, a route 1002A shown in FIG. 8 is an example of a route passing through the center of the target area 100. In the example shown in FIG. 8, the starting point of the route 1002A is a predetermined distance (for example, 0.5 m) from the intersection of the perpendicular bisector of the straight line connecting the transmitting antenna 61 and the receiving antenna 62 with the side 1004 in the target area 100. The point 1003A is located inside (upper side in FIG. 8). The end point of the route 1002A is a point that is inside the target area 100 (lower side in FIG. 8) by a predetermined distance (for example, 0.5 m) from the intersection of the side opposite the side 1004 and the perpendicular bisector. It is 1003B. In other words, as shown in FIG. 8, the route 1002A is a route passing through the center of the target area 100 starting from a point 1003A and ending at a point 1003B.

Next, the estimating device 10 causes the position estimating unit 60 to estimate a plurality of positions of the living body 200 that has moved along the route 1002A (S32). More specifically, the position estimating unit 60 uses the initially input first information and second information to estimate the location within the target area 100 when the living body 200 is present at points 1003A and 1003B shown in FIG. 8, for example. The position is estimated and transmitted to the processing unit 20.

Next, the estimation device 10 acquires third information regarding the trajectory composed of the plurality of positions estimated in step S32 (S33). Note that the estimation device 10 may acquire the plurality of positions estimated in step S32 as third information. For example, as shown in FIG. 8, the processing unit 20 may acquire, for example, the positions of the living body 200 corresponding to points 1003A and 1003B as the third information.

Next, in step S4, the estimation device 10 first calculates the angle 1005A and the angle 1005B shown in FIG. 8 using the acquired third information (S41). More specifically, the processing unit 20 uses the acquired third information to determine the angle that the straight line connecting the receiving antenna 62 and the point 1003A (that is, the position of the living body 200 corresponding to the point 1003A) makes with the side 1004. Calculate angle 1005A. Furthermore, using the acquired third information, the processing unit 20 calculates the angle 1005B, which is the angle that the straight line connecting the receiving antenna 62 and the point 1003B (that is, the position of the living body 200 corresponding to the point 1003B) makes with the side 1004. calculate.

Next, the estimation device 10 calculates the length of the side 1004 using the angle 1005A and the angle 1005B calculated in step S41 (S42). More specifically, the processing unit 20 calculates the length of the side 1004 using the angle of the corner 1005A calculated in step S41 and the distance between the side 1004 and the point 1003A. Furthermore, the processing unit 20 calculates the length of the side 1004 using the angle of the corner 1005B calculated in step S41 and the distance between the side 1004 and the point 1003B. Here, the calculated side 1004 corresponds to the horizontal length of the target area 100 with higher precision that should be included in the first information. More specifically, the processing unit 20 calculates the length of the side 1004 using the following (Formula 1).

In (Formula 1), a is the length of the side 1004 desired to be obtained as a calculation result. Further, b is the distance between the point 1003A and the side 1004, and is the distance between the point 1003B and the side 1004. θ is the angle of corner 1005A and the angle of corner 1005B.

Next, the estimating device 10 estimates the installation state of the transmitting antenna 61 and the receiving antenna 62 by correcting the second information or the first information using the side 1004 calculated in step S42 (S43). More specifically, the processing unit 20 calculates the average length of the plurality of sides 1004 calculated in step S42 to obtain a more accurate length of the side 1004. Then, the processing unit 20 uses the more accurate length of the side 1004 to correct the horizontal length of the rectangle 1001, which is included in the first information and is initially input as the horizontal length of the target area 100. Note that the processing unit 20 converts the horizontal length of the rectangle 1001, which is included in the first information and is initially input as the horizontal length of the target area 100, into the length of the side 1004 indicating the horizontal length of the target area 100. It may be corrected by replacing it with

Note that in the above-described specific embodiment, as an example, the correction was performed using the positioning results at two points on the perpendicular bisector of the side 1004, but the correction may be performed at three or more points. If the correction is performed at three or more points, the horizontal length of the target area 100 can be corrected more accurately.

FIG. 9A is a schematic diagram showing another example of the route instructed in step S3 and the calculation result performed in step S4 shown in FIG. FIG. 9B is a schematic diagram showing another example of the route instructed in step S3 shown in FIG. Note that in FIGS. 9A and 9B, elements similar to those in FIGS. 2 and 8 are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, the route passing through the center of the target area 100 is not limited to the route 1002A shown in FIG. 8. A route 1002B parallel to the side 1004 shown in FIG. 9A may be used, or a route 1002B shown in FIG. 8 and a route 1002B shown in FIG. 9A may be combined, such as a route 1002C shown in FIG. 9B.

Note that even when using the route 1002B shown in FIG. 9A as the route passing through the center of the target area 100, calculation can be performed using (Equation 1) in the same way as when using the route 1002A. In this case, in (Equation 1), b is the distance between the point 1003C and the side 1004, and may be the distance between the point 1003D and the side 1004. Further, θ is the angle of the corner 1005C, and may be the angle of the corner 1005C. The angle 1005C is the angle that the line connecting the receiving antenna 62 and the starting point 1003C of the route 1002B makes with the side 1004. Corner 1005D is the angle that a line connecting point 1003D, which is the end point of route 1002B, and receiving antenna 62 makes with side 1004.

Further, the specific aspects of steps S3 and S4 shown in FIG. 4 are not limited to those shown in FIGS. 7 to 9B. The structure shown in FIG. 10 may also be used. Hereinafter, another specific aspect of steps S3 and S4 shown in FIG. 4 will be described using FIG. 10.

FIG. 10 is a flowchart showing another specific aspect of steps S3 and S4 shown in FIG. FIG. 11 is a schematic diagram showing an example of the route instructed in step S3A shown in FIG. 10. Note that in FIG. 11, elements similar to those in FIG. 2 are denoted by the same reference numerals, and detailed explanations will be omitted.

In step S3A, first, the estimation device 10 instructs the user to move along the route 1002D shown in FIG. 10 as a predetermined route in the target area 100 (S31A). More specifically, the processing unit 20 generates information instructing movement along the route 1002D shown in FIG. 11, and transmits it to the output unit 40. Thereby, the output unit 40 can instruct the living body 200, which is the user, to move along the route 1002D shown in FIG. 11.

Here, a route 1002D shown in FIG. 11 is an example of a route along the outer periphery of the target area 100 in which the living body 200 can move.

Next, the estimating device 10 causes the position estimating unit 60 to estimate a plurality of positions of the living body 200 that has moved along the route 1002D (S32A). More specifically, the position estimating unit 60 uses the first information and the second information to determine the target area 100 of the living body 200 during the period when the living body 200 is moving along a route 1002D shown in FIG. and transmits a plurality of positions of the living body 200 in chronological order to the processing unit 20. Note that the first information and second information used by the position estimation unit 60 are initially input or corrected in step S43.

Next, the estimation device 10 acquires third information regarding the trajectory composed of the plurality of positions estimated in step S32A (S33A). Note that the estimation device 10 may acquire a plurality of positions along the time series estimated in step S32A as the third information.

Next, in step S4A, the estimation device 10 first estimates the planar shape (outer shape) of the target area 100 by correcting the first information using the acquired third information. More specifically, the processing unit 20 estimates the movement trajectory of the living body 200 when the living body 200 moves along the route 1002D estimated by the position estimation unit 60 as the outer shape of the target region 100. The processing unit 20 estimates the outer shape of the target area 100 by correcting the length forming the planar shape of the target area 100 included in the first information using the estimated length of the movement trajectory. Become.

In addition, although the said embodiment demonstrated the example where the target area 100 is one room, it is not limited to this. The target area 100 may be two or more adjacent rooms that can be accessed through an indoor door.

Further, in the above embodiment, the information regarding the target area 100 is explained as an example of the planar shape such as the external shape or the installation state such as the installation position of the transmitting antenna 61 and the receiving antenna 62, but the information is not limited to this. do not have. The information regarding the target area 100 may further include the position of an installation in the target area 100, and may also include information such as the position of a specific area 110 such as a toilet in the target area 100. Furthermore, the information regarding the target area 100 may further include the orientation of the target area 100.

(Modification 1)
In this modification, an outline of the operation and one specific aspect will be described when the estimation device 10 performs a process of registering information such as the position of an installed object or the specific area 110 in the target area 100.

FIG. 12A is a flowchart illustrating a processing overview of estimation device 10 according to Modification 1 of Embodiment 1. In FIG. 12A, elements similar to those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The flowchart illustrating the processing outline of the estimation device 10 according to the first modification shown in FIG. 12A differs from the flowchart illustrating the processing outline of the estimation device 10 shown in FIG. 4 in that the processing of step S5 is added.

That is, in this modification, the estimation device 10 further registers the position of the installation object installed in the target area 100 in step S5. Note that in step S5, the estimation device 10 may register the position of the specific area 110 in the target area 100.

Hereinafter, a specific aspect of step S5 shown in FIG. 12A will be described.

FIG. 12B is a flowchart showing a specific aspect of step S5 shown in FIG. 12A.

In step S5, the estimation device 10 first instructs the living body 200, which is the user, to move to the position of the installation object installed in the target area 100 (S51). More specifically, the processing unit 20 generates information instructing movement to the position of the installed object that requires setting or registration, and transmits it to the output unit 40. Thereby, the output unit 40 can instruct the living body 200, which is the user, to move to the installed object.

Next, the estimating device 10 moves to the specified position of the installed object and causes the position estimating unit 60 to estimate the position of the stationary living body 200 (S52). More specifically, the position estimating unit 60 estimates the position of the living body 200 at the time when the living body 200 is stationary, and transmits the estimated position to the processing unit 20. Note that the position estimating unit 60 may estimate a position where the living body 200 does not move for a certain period of time or more after a movement instruction is given to the living body 200 as the position of the living body 200 at rest. Further, the position estimating unit 60 may estimate the position of the living body 200 at the time when the timing at which the movement of the living body 200 is completed is inputted to the input unit 30 by the living body 200.

Next, the estimation device 10 acquires fourth information indicating the position estimated in step S52 (S53).

Next, the estimating device 10 associates the fourth information acquired in step S53 with information for identifying the installed object or the room in which the installed object is installed, and stores the associated information in the storage unit 50 (S54).

In this way, the estimation device 10 registers the position of the installation object installed in the target area 100.

(Modification 2)
In this modification, a case will be described with reference to FIG. 13 in which the estimation device 10 registers the position of a specific area 110 in a target area 100 consisting of two adjacent indoor rooms that can be accessed via a door.

FIG. 13 is a schematic diagram showing an example of a target area 100, a predetermined route, and a specific area according to the second modification of the first embodiment.

The target area 100 according to the second modification shown in FIG. 13 is different from the target area 100 consisting of one room as shown in FIG. It is possible to go in and out of room 100A and room 100B. In addition, in the target area 100 according to the second modification shown in FIG. has been done.

Further, a route 1002E according to Modification 2 shown in FIG. 13 is an example of a route along the outer periphery of the movable target area 100, and for example, compared to the route 1002D shown in FIG. The route follows the outer periphery of room 100A and room 100B.

Then, by moving the living body 200 along the path 1002E in the target area 100 shown in FIG. It is assumed to have an external shape of 100.

Further, in the target area 100 according to the second modification shown in FIG. 13, the position of the specific area 110A of the room 100A and the position of the specific area 110B of the room 100B may be registered.

In this case, the estimation device 10 according to the second modification first instructs the living body 200 to move to the position of the specific area 110A of the room 100A or the specific area 110B of the room 100B. Next, the estimating device 10 moves to the specified specific area 110A or 110B, and causes the position estimating unit 60 to estimate the position of the stationary living body 200. Then, the estimating device 10 stores the fourth information indicating the position estimated by the position estimating unit 60 and information identifying the specific area 110A or the specific area 110B in the storage unit 50 in association with each other.

Note that, for example, in order to set attributes such as usage, the living body 200 may be instructed to move to the room 100A or room 100B that has the desired attribute. In this case, the estimation device 10 estimates the position of the living body 200A in the specific area 110A of the room 100A or the living body 200B in the specific area 110B of the room 100B. Then, the estimation device 10 may store the surrounding area including the estimated position as the specific area 110A or 110B having the desired attribute.

Note that the target area 100 for estimating the external shape is not limited to one or more indoor rooms as described above, but may also be a small room such as a toilet, an area around furniture such as a bed or a table, etc. Further, as the external shape of the target area 100, for example, indoor boundaries such as a kitchen, a hallway, an entrance, a bathroom, etc. may be estimated.

Further, when registering the position of a specific area or the position of an installed object, the height of the living body 200 may be estimated and the height may also be stored in the storage unit 50. Thereby, the estimating device 10 can estimate the height of a specific area such as a bed or a floor.

[Effects etc.]
As described above, according to the estimation device 10 and the like of the present disclosure, information regarding the target area 100 can be easily and highly accurately estimated using radio signals. More specifically, by using wireless signals, information regarding the target area 100 where biological sensing is desired, such as the planar shape such as the external shape or the installation state such as the installation position of the transmitting antenna 61 and the receiving antenna 62, can be easily obtained. And it can be estimated with high accuracy.

Furthermore, by using the estimation device 10 of the first embodiment, the outline of the target area 100 can be easily and highly accurately estimated by having the living body 200 move along a predetermined path. The floor plan required for home monitoring using wireless signals can be estimated without complicated manual input.

Although the estimation method, estimation device, and program according to one aspect of the present disclosure have been described based on the embodiments, the present disclosure is not limited to these embodiments. Unless departing from the spirit of the present disclosure, various modifications that can be thought of by those skilled in the art to the present embodiment, or forms constructed by combining components of different embodiments are also included within the scope of the present disclosure. .

Further, the present disclosure can be realized not only as a sensor including such characteristic components, but also as an estimation method using the characteristic components included in the sensor as steps. Moreover, each characteristic step included in such a method can also be realized as a computer program that causes a computer to execute it. It goes without saying that such a computer program can be distributed via a non-transitory computer readable recording medium such as a CD-ROM or a communication network such as the Internet.

The present disclosure can be used for an estimation method, an estimation device, and a program that estimate the direction and position of a living body using wireless signals. In particular, the initial setting method installed in measuring instruments that measure the direction and position of moving objects including living organisms and machines, home appliances that perform control according to the direction and position of moving objects, and monitoring devices that detect intrusion of moving objects. Available.

10 Estimation device 20 Processing unit 30 Input unit 40 Output unit 50 Storage unit 60 Position estimation unit 61 Transmission antenna 62 Receiving antenna 100 Target area 100A, 100B Room 110, 110A, 110B Specific area 200 Living body 1001 Rectangle 1002A, 1002B, 1002C, 10 02D , 1002E Route 1003A, 1003B, 1003C, 1003D Point 1004 Side 1005A, 1005B, 1005C, 1005D Corner

Claims (14)

An estimation method that estimates information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves,
obtaining first information regarding the length forming the planar shape of the target area;
obtaining second information regarding the installation state of a transmitting antenna and a receiving antenna possessed by the estimation device;
acquiring third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device when the living body moves along a predetermined route in the target area;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. performing at least the planar shape estimation of the installation state estimation as an estimation of information regarding the target area;
Estimation method. An estimation method that estimates information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves,
obtaining first information regarding the length forming the planar shape of the target area;
obtaining second information regarding the installation state of a transmitting antenna and a receiving antenna possessed by the estimation device;
acquiring third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device when the living body moves along a predetermined route in the target area;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. thereby performing at least one of the estimations of the installation state as estimation of information regarding the target area,
The predetermined path is a path in which the living body passes through the center of the target area in the target area,
When performing at least one of estimating the planar shape and estimating the installation state,
Based on the acquired first information, second information, and third information, the second information is corrected to estimate the installation state including the installation positions of the transmitting antenna and the receiving antenna in the target area. carried out as an estimation of information about,
Estimation method. An estimation method that estimates information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves,
obtaining first information regarding the length forming the planar shape of the target area;
obtaining second information regarding the installation state of a transmitting antenna and a receiving antenna possessed by the estimation device;
acquiring third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device when the living body moves along a predetermined route in the target area;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. thereby performing at least one of the estimations of the installation state as estimation of information regarding the target area,
The predetermined route is a route along the outer periphery of the target area in which the living body can move in the target area,
When performing at least one of estimating the planar shape and estimating the installation state,
Estimating the planar shape by correcting the first information based on the acquired first information, second information, and third information, as estimation of information regarding the target area;
Estimation method. The installation state includes at least one of the position, height, and angle at which the transmitting antenna and the receiving antenna are installed.
The estimation method according to any one of claims 1 to 3. The target area is one or more rooms indoors,
Furthermore, when the living body is kept stationary at the position of an installation installed in the target area, fourth information indicating the position of the living body estimated by the estimation device is obtained,
storing the fourth information in a storage unit in association with information identifying the installation object or a room in which the installation object is installed among the one or more rooms;
The estimation method according to any one of claims 1 to 4. Furthermore, displaying the fourth information on a display device as information indicating the position of the installation object or the position of the room in which the installation object is installed,
accepting correction information input by the user regarding the position of the installation or the position of the room;
modifying the fourth information based on the received modification information;
The estimation method according to claim 5. Further, when the living body is stopped at a position facing a predetermined direction as viewed from the center of the target area, the position of the living body estimated by the estimation device is obtained,
a direction from the center toward the acquired position of the living body and the predetermined orientation are associated with each other and stored in a storage unit as the orientation of the target area;
The estimation method according to any one of claims 1 to 3. The estimation device estimates the position of the living body based on a signal component influenced by the living body, which is extracted by a predetermined method from the signal received by the receiving antenna.
The estimation method according to any one of claims 1 to 7. An estimation device that estimates information regarding a target area using a position estimation unit that has a transmitting antenna and a receiving antenna and estimates information including the position of a living body using radio waves,
acquiring first information regarding a length forming a planar shape of the target area; acquiring second information regarding installation states of the transmitting antenna and the receiving antenna; and determining whether the living body has moved along a predetermined path in the target area. an acquisition unit that acquires third information regarding a trajectory composed of a plurality of positions of the living body estimated by the position estimation unit;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. a correction estimator that performs at least the planar shape estimation of the installation state estimation as an estimation of information regarding the target area;
Estimation device. An estimation device that estimates information regarding a target area using a position estimation unit that has a transmitting antenna and a receiving antenna and estimates information including the position of a living body using radio waves,
acquiring first information regarding a length forming a planar shape of the target area; acquiring second information regarding installation states of the transmitting antenna and the receiving antenna; and determining whether the living body has moved along a predetermined path in the target area. an acquisition unit that acquires third information regarding a trajectory composed of a plurality of positions of the living body estimated by the position estimation unit;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. a correction estimator that performs at least one of the estimations of the installation state as an estimation of information regarding the target area;
The predetermined path is a path in which the living body passes through the center of the target area in the target area,
The correction estimator includes:
When performing at least one of estimating the planar shape and estimating the installation state,
Based on the acquired first information, second information, and third information, the second information is corrected to estimate the installation state including the installation positions of the transmitting antenna and the receiving antenna in the target area. carried out as an estimation of information about,
Estimation device. An estimation device that estimates information regarding a target area using a position estimation unit that has a transmitting antenna and a receiving antenna and estimates information including the position of a living body using radio waves,
acquiring first information regarding a length forming a planar shape of the target area; acquiring second information regarding installation states of the transmitting antenna and the receiving antenna; and determining whether the living body has moved along a predetermined path in the target area. an acquisition unit that acquires third information regarding a trajectory composed of a plurality of positions of the living body estimated by the position estimation unit;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. a correction estimator that performs at least one of the estimations of the installation state as an estimation of information regarding the target area;
The predetermined route is a route along the outer periphery of the target area in which the living body can move in the target area,
The correction estimator includes:
When performing at least one of estimating the planar shape and estimating the installation state,
Estimating the planar shape by correcting the first information based on the acquired first information, second information, and third information, as estimation of information regarding the target area;
Estimation device. A program that causes a computer to execute an estimation method for estimating information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves, the program comprising:
obtaining first information regarding the length forming the planar shape of the target area;
acquiring second information regarding the installation state of a transmitting antenna and a receiving antenna possessed by the estimation device;
acquiring third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device when the living body moves along a predetermined route in the target area;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. causing a computer to perform the step of estimating at least the planar shape of the installation state estimation as an estimation of information regarding the target area;
program. An estimation method that estimates information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves,
obtaining first information regarding the length forming the planar shape of the target area;
acquiring second information regarding the installation state of a transmitting antenna and a receiving antenna possessed by the estimation device;
acquiring third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device when the living body moves along a predetermined route in the target area;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. performing at least one of the estimations of the installation state as an estimation of information regarding the target area;
The predetermined path is a path in which the living body passes through the center of the target area in the target area,
In the step of making the estimation,
When performing at least one of estimating the planar shape and estimating the installation state,
Based on the acquired first information, second information, and third information, the second information is corrected to estimate the installation state including the installation positions of the transmitting antenna and the receiving antenna in the target area. carried out as an estimation of information about,
A program that causes a computer to execute an estimation method. An estimation method that estimates information regarding a target area using an estimation device that estimates information including the position of a living body using radio waves,
obtaining first information regarding the length forming the planar shape of the target area;
acquiring second information regarding the installation state of a transmitting antenna and a receiving antenna possessed by the estimation device;
acquiring third information regarding a trajectory composed of a plurality of positions of the living body estimated by the estimation device when the living body moves along a predetermined route in the target area;
Based on the acquired first information, second information, and third information, (1) estimate the planar shape by correcting the first information, and (2) correct the second information. performing at least one of the estimations of the installation state as an estimation of information regarding the target area;
The predetermined route is a route along the outer periphery of the target area in which the living body can move in the target area,
In the step of making the estimation,
When performing at least one of estimating the planar shape and estimating the installation state,
Estimating the planar shape by correcting the first information based on the acquired first information, second information, and third information, as estimation of information regarding the target area;
A program that causes a computer to execute an estimation method.

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