JP6927936B2 - System and method for estimating the mounting position of the terminal in a person - Google Patents

Description

The present invention relates to a technique for estimating the position of a person using radio waves of a short-range wireless communication system.

Conventionally, there is a technique of estimating the position of a person in an indoor space by a short-range wireless communication type radio wave transmitted from a tag device.
Tag devices that send public relations packets are placed throughout the indoor space. A person holding a terminal (for example, a smartphone) moves in the room. The terminal receives the publicity packet each time it approaches each tag device by the scanner function of BLE. At this time, the terminal acquires the beacon ID included in the received public relations packet and its reception strength (RSSI: Received Signal Strength Indication) and transmits it to the position estimation device via the access network.

The position estimation device estimates where the person who owns the terminal is located based on the beacon ID and the reception intensity received from the terminal. Specifically, as a learning phase for each of a plurality of predetermined positions, a "fingerprint" in which a set of RSSIs from a plurality of tag devices is measured in advance is used. The reception strength group for each tag device as a fingerprint is compared with the reception strength group for each tag device that is the query received at the present time. Then, the position of the reference point in the reception intensity group of the most similar fingerprint is estimated to be the position of the person who owns the terminal.

As another conventional technique, there is also a pedestrian dead reckoning (PDR) technique in which the position of a person in an indoor space is estimated by an acceleration sensor or the like in order to grasp the action context of the user.
Among them, for example, there is a technique for estimating where a person is wearing a terminal around his / her waist (see, for example, Non-Patent Document 1). According to this technology, the acceleration sensor mounted on the terminal is used to collect acceleration / angular velocity data by walking and identify by machine learning.
Specifically, joint angle table data showing the relationship between the angle of each joint used for walking of a person and the mounting position of the acceleration sensor is created in advance. It collects acceleration data transmitted from an acceleration sensor worn on the waist or abdomen of a person, smoothes the acceleration data, and detects maximum and minimum values. Then, the position close to the table created in advance by performing the time integration of the second floor is calculated as the position with respect to the grounding point of the acceleration sensor.

Further, as another conventional technique, there is a technique of analyzing the flow line of a person who acts in the store (see, for example, Patent Document 1). According to this technique, a flow line analysis device tracks a person included in an image of the inside of a store to generate a flow line corresponding to the moving object.

Japanese Unexamined Patent Publication No. 2009-258782

"Method of estimating mounting position / direction of sensor device using acceleration / angular velocity", IPSJ 74th National Convention 6X-6, [online], [Search on September 10, 2018], Internet <URL: https //ipsj.ixsq.nii.ac.jp/ej/? action=repository_action_common_download & item_id = 110210 & item_no = 1 & attribute_id = 1 & file_no = 1>

Even if the person holding the terminal is in the same position in the room, there is a phenomenon that the radio wave intensity received from the tag device differs depending on the position of the terminal worn by the person. From the terminal's point of view, it is not possible to recognize whether the reception strength from the tag device is in a state of good visibility or in a state of intervening a shield.
One cause is that the person wearing the terminal itself acts as a shield against radio waves received from the tag device. For example, when a person wears the terminal on the left side, the radio field strength from the tag device on the left side with good visibility is high, but the radio field strength from the tag device on the right side where the person himself / herself is a shield is low. As a result, the estimated position of the person can also be significantly wrong.

However, even if an attempt is made to estimate the wearing position of a terminal in a person according to the above-mentioned Non-Patent Document 1, there is a problem that prior learning is required and it cannot be identified unless the person is walking. In addition, Non-Patent Document 1 attempts to estimate a mounting position around the waist, which will affect the movement of a person (walking, running, going up stairs, going down stairs).
On the other hand, the inventor of the present application considered that it is necessary to estimate the mounting position of the terminal in a person, which will affect the reception intensity of radio waves.

Therefore, an object of the present invention is to provide a system and a method for estimating a mounting position of a terminal in a person.

According to the present invention, a transmitter that transmits a public relations packet including a different transmitter ID (IDentifier) corresponding to each of a plurality of areas, and a transmitter.
A terminal that receives public relations packets while attached to a person,
A person detection device that detects the time zone when a person flow line exists in each area,
It is a system having a mounting position estimation device that acquires a transmitter ID, a terminal ID, and a reception strength of a public relations packet from a terminal and estimates the mounting position of the terminal in a person on a person flow line existing in the area.
The mounting position estimation device is
A map table in which the transmitter IDs of multiple transmitters to be searched are registered for each area,
A person flow line associating means for associating a target terminal that has received a publicity packet of a transmitter ID in the area with the person flow line during a time zone in which the person flow line exists in the area.
For the target terminal, a transmitter ID search means for searching the transmitter ID corresponding to the area using the map table, and
A person existing in the area is characterized by having a mounting position estimating means for presuming that the target terminal is mounted at a position on the transmitter side having a relatively high reception intensity.

According to other embodiments in the system of the present invention
It is also preferable that the person detection device detects the time zone only when the number of people detected in the area is equal to or less than a predetermined number.

According to other embodiments in the system of the present invention
Regarding the person flow line associating means of the mounting position estimation device, the target terminal receives the terminal that received the most publicity packets of the transmitter ID in the area, or receives the publicity packets of the transmitter ID in the area relatively high. It is also preferable that the terminal receives the signal with high intensity.

According to other embodiments in the system of the present invention
It is also preferable that the photographing device is a camera that photographs each area or a lidar (light detection and ranging) that irradiates each area with a light wave.

According to other embodiments in the system of the present invention
The person detection device detects a person in both areas adjacent to each other across the counter, and detects a time zone in which the person in the area is positively present in the counter.
It is also preferable that the mounting position estimating means of the mounting position estimating device estimates a plurality of sides with respect to the forward direction of the person as the mounting position of the target terminal.

According to other embodiments in the system of the present invention
Regarding the mounting position estimating means of the mounting position estimating device, it is also preferable that the plurality of sides are two or more sides located at equal angles with respect to the person.

According to other embodiments in the system of the present invention
The terminal is equipped with or connected to an angular velocity sensor
It is also preferable that the person detection device corrects the forward orientation of the detected person based on the angular velocity received from the terminal.

According to other embodiments in the system of the present invention
Terminal angular velocity sensor detects an angular velocity, or equipped with an acceleration sensor for detecting acceleration or connected,
It is also preferable that the person detection device stops functioning when the angular velocity or acceleration received from the terminal changes by a predetermined threshold value or more.

According to other embodiments in the system of the present invention
The transmitter and terminal are devices based on the same short-range wireless standard of BLE (Bluetooth Low Energy) or iBeacon (registered trademark) or wireless LAN.
It is also preferable that the transmitter ID included in the public relations packet is a beacon ID included in the Advertising Packet.

According to the present invention, a transmitter that transmits a public relations packet including different transmitter IDs corresponding to each of a plurality of areas, and a transmitter.
A terminal that receives public relations packets while attached to a person,
A person detection device that detects the time zone when a person flow line exists in each area,
A method of estimating the mounting position of a system having a mounting position estimation device that acquires the transmitter ID, terminal ID, and reception strength of a public relations packet from a terminal and estimates the mounting position of the terminal in a person with a person flow line existing in the area. There,
The mounting position estimation device is
Each area has a map table in which the transmitter IDs of a plurality of transmitters to be searched are registered.
The first step of associating the target terminal that received the publicity packet of the transmitter ID in the area with the person flow line during the time zone when the person flow line exists in the area, and
For the target terminal, the second step of searching for the transmitter ID corresponding to the area using the map table, and
A person present in the area is characterized by having a third step of presuming that the target terminal is attached to a position on the transmitter side where the reception intensity is relatively high.

According to the system and method of the present invention, it is possible to estimate the mounting position of the terminal in a person.

It is a system block diagram in this invention. It is a floor map showing the indoor space where people exist. It is explanatory drawing which shows the process of the person flow line correspondence part. It is explanatory drawing which shows the process of the transmitter ID search unit and the mounting position estimation unit. It is explanatory drawing which shows the reception strength of the radio wave based on the mounting position of a terminal. It is explanatory drawing which shows the contradiction of the reception intensity of the radio wave based on the mounting position of a terminal. It is a graph which shows the reception strength for each transmitter ID.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a system configuration diagram according to the present invention.

According to FIG. 1, a situation is shown in which a clerk is explaining a product to a customer via a counter inside the store. Here, when the person to be action-recognized is a clerk, the accuracy of the action recognition using the radio wave of the short-range wireless communication method for the clerk can be improved by estimating the mounting position of the terminal in the clerk. ..

According to the system of FIG. 1, it has a mounting position estimation device 1, a transmitter 2, a terminal 3, a person detection device 4, and a photographing device 5.

[Transmitter 2]
The transmitter 2 is installed in each of a plurality of areas, and transmits a public relations packet including a different transmitter ID (IDentifier) for each area.
The transmitter 2 is a tag device of a short-range wireless communication system, and constantly transmits an Advertising Packet. As the short-range wireless communication method, for example, Bluetooth (registered trademark), Zigbee (registered trademark), or wireless LAN is used. Among them, "BLE (Bluetooth Low Energy)", which has a narrow range of radio waves, is particularly suitable. As a low power consumption version of Bluetooth, it operates with about 1/3 of the power, so even a button battery can operate for several years. In addition, the public relations packet is periodically transmitted at intervals of, for example, 100 ms (20 ms to 10.24 s as a standard). In addition, iBeacon (registered trademark) based on Apple's iOS 7 or later OS is also based on BLE.
According to the BLE standard, the transmitter 2 functions as an "advertiser", and the public relations packet includes a "beacon ID" as the transmitter ID. The beacon ID includes a UUID (Universally Unique Identifier) that identifies the tag module.

FIG. 2 is a floor map showing an indoor space in which a person exists.

According to FIG. 2, the interior space of the store is divided into a plurality of areas. For example, the area S where the clerk stays (seats) and the area C where the customer stays (seats) are divided for each counter. Then, assuming that the behavior recognition target is a clerk, it is recognized whether or not a person exists in each area S.

The transmitter 2 is arranged above (or below) the counter in each area.
In addition, a "map table" that associates the area with the beacon ID is defined.
According to FIG. 2, the map table is associated with beacon IDs transmitted from at least two transmitters for each area ID.
In the following, a case where a person wears the terminal 3 on his / her left side or right side will be described as an example.
-Beacon ID of the transmitter on the left side of the person when the person stays in the area
-Beacon ID of the transmitter on the right side of the person when the person stays in the area
The mounting position is not limited to the two left and right sides, but may be four sides in front, back, left and right, or a plurality of sides (for example, sides located at equal angles with respect to the person). good.
According to FIG. 2, for example, when a person stays in the area S4, the beacon ID: b4 of the transmitter on the left side of the person and the beacon ID: b5 of the transmitter on the right side of the person are associated with each other. Has been done.

[Terminal 3]
The terminal 3 receives the public relations packet while being attached to the person. The terminal 3 is like, for example, a smartphone possessed by a clerk who is a person to be recognized for behavior. When the clerk moves around the room with the terminal 3 attached, the terminal 3 receives the public relations packet transmitted from the nearby transmitter 2. That is, the terminal 3 functions as, for example, a scanner in the BLE standard.
The terminal 3 acquires the beacon ID (transmitter ID) and reception strength included in the publicity packet. Then, the terminal 3 transmits data including the “reception time”, “terminal ID”, “beacon ID”, and “reception intensity” recorded each time the public relations packet is received to the mounting position estimation device 1.

As another embodiment, the terminal 3 may be equipped with or connected to an angular velocity sensor or an acceleration sensor.
For the person who owns the terminal 3, when the direction is suddenly changed, a large angular velocity is detected. Angular velocity is the angle of rotation per unit time. When a person changes direction while the person is wearing the terminal 3, the reception strength of the public relations packet from each transmitter detected by the terminal 3 also changes.
Further, when the person holding the terminal 3 is seated, the change in acceleration is small, whereas when the person suddenly stands up, a large value of acceleration is detected. When a person suddenly stands up with the terminal 3 attached, the reception strength of the public relations packet from each transmitter detected by the terminal 3 also changes.
The terminal 3 may further include the measured values of the angular velocity sensor or the acceleration sensor in the data transmitted when the publicity packet is received, and transmit the measured values to the mounting position estimation device 1.

[Photographing device 5]
The photographing device 5 captures an image around the area. The photographing device 5 may be, for example, a general camera or a lidar (light detection and ranging) that detects an image by a laser.
For example, in the case of an omnidirectional camera, it is installed on the ceiling or the like, takes a picture of the room, and transmits the omnidirectional image to the person detection device 4.

[People detection device 4]
The person detection device 4 analyzes the flow line of a person based on the image detected by the photographing device 5. The person reflected in the image is detected, and the position of the person is detected from the person detection coordinates on the image and the coordinate system in the physical space of the shooting area. Then, an arbitrary flow line ID is assigned to the flow line connecting the positions where the person has moved, and the person with the flow line ID is tracked.
Then, the person detection device 4 detects the time zone in which the person flow line exists for each area. The "area ID" and "time zone" in which the person's flow line exists and the "flow line ID" of the person are transmitted to the device position estimation device 1.
For example, according to FIG. 2, since there is no person flow line in the time zone in the area S3, it is detected that "there is no person", and the person flow line exists in the area S4 in the time zone. Therefore, it is detected that "a person exists".

The person detection device 4 preferably detects a time zone only when the number of people detected in the area is a predetermined number (for example, one person) or less. Generally, since there is only one clerk in the counter, it is sufficient that the mounting position of the terminal 3 can be estimated only for that clerk. On the contrary, when there are more than a predetermined number of people (for example, two or more people) in one area, the estimation of the mounting position of the terminal is not executed.

Further, the person detection device 4 may detect a time zone in which a person in the area exists "forwardly". When there are people with each other across the customer service counter, the people in the area S4 always have the counter facing forward. Therefore, it is also preferable to detect the person only when the persons (the clerk and the customer) face each other through the counter. For example, as in areas S4 and C4 of FIG. 2, only when a person is detected in both areas via the counter, it is assumed that the person in area S4 exists positively, and the time zone is detected.

As another embodiment, when the data received from the terminal 3 includes angular velocity and / or acceleration, the person detection device 4 functions as follows.
(1) When the angular velocity is received, the person detection device 4 corrects the forward direction of the detected person based on the angular velocity received from the terminal 3.
(2) When the angular velocity or acceleration is received, the person detection device 4 stops the function when the angular velocity or acceleration received from the terminal 3 changes by a predetermined threshold value or more. This makes it possible to extract only the time zone when the person is positive.

[Mounting position estimation device 1]
The mounting position estimation device 1 estimates the mounting position of the terminal 3 on a person. The mounting position estimation device 1 acquires the "transmitter ID", "terminal ID", and "reception strength" of the public relations packet from the terminal 3, and determines the mounting position of the terminal in a person staying in the area detected by the person detection device 4. presume.

According to FIG. 1, the mounting position estimation device 1 has a map table 101, a person flow line associating unit 11, a transmitter ID search unit 12, and a mounting position estimation unit 13. These functional components are realized by executing a program that makes the computer mounted on the device function. Further, the processing flow of these functional components can be understood as a mounting position estimation method.

<Person flow line mapping unit 11>
The person flow line associating unit 11 associates the target terminal that has received the publicity packet of the transmitter ID in the area with the person flow line during the time zone when the person flow line exists in the area.

FIG. 3 is an explanatory diagram showing the processing of the person flow line associating unit.

FIG. 3A is a table showing the “reception time”, “terminal ID”, “beacon ID”, and “reception strength” recorded each time each terminal receives a publicity packet.
<Reception time><TerminalID><BeaconID><Receptionstrength>
10:00 e2 b0 -65dBm
10:01 e1 b3 -70dBm
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・

FIG. 3B is a table showing a time zone in which the presence of a person is detected for each area. This is received from the person detection device 4.
<Person flow line ID><AreaID><Timezone>
・ ・ ・ ・ ・ ・ ・ ・ ・
201 S2 9: 45-9: 49
202 S4 10: 00-10: 10
・ ・ ・ ・ ・ ・ ・ ・ ・

FIG. 3 (c) is a summary of FIG. 3 (a) divided into "time zones" of FIG. 3 (b) for each terminal ID.
<Terminal ID><BeaconID><Average reception strength><Timezone>
e1 b3 -80dBm 10: 00-10: 10
e1 b4 -65dBm 10: 00-10: 10
e1 b5 -70dBm 10: 00-10: 10
e2 b4 -75dBm 10: 00-10: 10
e2 b5 -70dBm 10: 00-10: 10
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・
Further, for each terminal ID, the beacon ID received in the time zone of FIG. 3B is associated with the average reception intensity for each beacon ID.

In FIG. 3D, a terminal ID to be a “target terminal” is selected from FIG. 3C by any of the following methods.
(1) A terminal that receives a relatively large number of transmitter ID publicity packets in the area (2) A terminal that receives a relatively high receiver ID publicity packet in the area Specifically, for example, an area The target terminal staying in the area S4 during the time zone in which the person exists in S4 receives the beacon ID: b4 with a relatively high reception intensity.

For example, it is assumed that the person detection device 4 detects a person with the person flow line ID 202 in the area S4 in the time zone from 10:00 to 10:10. In that case, the beacon IDs received in the time zone from 10:00 to 10:10 are collected for each terminal ID, and the average reception intensity for each beacon ID is acquired. Then, the terminal ID: e1 having a relatively high average reception intensity of the beacon ID: b4 is searched for in the time zone 10:00 to 10:10 in the area S4.
As a result, the terminal ID of the target terminal is associated with the area ID and the person flow line ID staying in the time zone (for example, referred to as "counter ID matching").

As a result, the person flow line mapping unit 11 can associate the target terminal that has received the publicity packet of the transmitter ID in the area with the person flow line during the time zone when the person flow line exists in the area. ..

<Transmitter ID search unit 12>
The transmitter ID search unit 12 searches the target terminal for the transmitter ID corresponding to the area using the map table 101. As described above in FIG. 2, the map table 101 associates the area with the beacon ID.

FIG. 4 is an explanatory diagram showing the processing of the transmitter ID search unit and the mounting position estimation unit.

According to FIG. 4, the beacon ID: b4 on the left side and the beacon ID: b5 on the right side associated with the area S4 are searched for the target terminal using the map table 101.

For example, specifically, it is assumed that each transmitter is arranged in each area as follows.
Transmitter ID of the transmitter located in area 3: b3
Transmitter ID of the transmitter located in area 4: b4
Transmitter ID of the transmitter located in area 5: b5
In this case, the beacon ID used to determine whether the wearing position of the target terminal in the person staying in the area 4 is the left side or the right side is the beacon ID: b4 + b5 according to the map table 101.
At this time, the map table may have a beacon ID: b3 + b5 as another association with the area 4.

That is, the area ID and the beacon ID registered in the map table may be the optimum beacon ID registered for each area. That is, it is not necessarily limited to the beacon ID of the transmitter arranged in the area adjacent to the area. Further, as shown in FIG. 2, it is not always necessary for the area ID 4 to include the beacon ID: b4. Of course, other IDs: b2 + b6 may be associated with the area 4.

<Mounting position estimation unit 13>
The mounting position estimation unit 13 estimates that the person existing in the area by the person detection device 4 wears the target terminal at a position on the transmitter side where the reception intensity is relatively high. Most simply, the mounting position estimation unit 13 estimates the right side or the left side of the person facing forward as the mounting position of the target terminal.

FIG. 5 is an explanatory diagram showing the reception intensity of radio waves based on the mounting position of the terminal.

According to FIG. 5, a person (clerk) staying in the area S4 wears the terminal 3 on his waist.
When a person wears the terminal 3 on the left side, the reception strength of the beacon ID: b4 of the transmitter on the left side is higher than the reception strength of the beacon ID: b5 of the transmitter on the right side.
On the other hand, when the person wears the terminal 3 on the right side, the reception strength of the beacon ID: b5 of the transmitter on the right side of the area S4 is higher than the reception strength of the beacon ID: b4 of the transmitter on the left side of the area S4. It's getting higher.
Such a difference in the reception strength of the public relations packet is based on the fact that the person himself / herself is a radio wave shield.

FIG. 6 is an explanatory diagram showing a contradiction in the reception intensity of radio waves based on the mounting position of the terminal.

According to FIG. 6A, when a person wears the terminal on the left side, the reception strength from the transmitter on the left side is usually higher than the reception strength from the transmitter on the right side. This is because the reception intensity from the transmitter on the right side is reduced by the shield of the person himself.
The terminal mounting position for a person is on the left side:
Average reception strength from the left transmitter> Average reception strength from the right transmitter

According to FIG. 6B, it is a contradiction that when a person wears the terminal on the left side, the reception strength from the transmitter on the right side is larger than the reception strength from the transmitter on the left side.

According to FIG. 6C, when a person wears the terminal on the right side, the reception strength from the transmitter on the right side is usually higher than the reception strength from the transmitter on the left side. This is because the reception intensity from the transmitter on the left side is reduced by the shield of the person himself.
The mounting position of the terminal in a person is on the right side:
Average reception strength from the left transmitter <Average reception strength from the right transmitter

According to FIG. 6D, it is a contradiction that when a person wears the terminal on the right side, the reception strength from the transmitter on the left side is larger than the reception strength from the transmitter on the right side.

FIG. 7 is a graph showing the reception strength for each transmitter ID.

According to FIG. 7, in the terminal e1, the vertical axis represents the reception intensity [dBm] and the horizontal axis represents the elapsed time.
(1) The horizontal axis represents a time zone in which a person is detected in, for example, the area S4 by the person detection device 4.
(2) Since the terminal e1 has a relatively high average reception intensity of the beacon ID: b4 as compared with other terminals, it is determined that a person possessing the terminal e1 is staying in the area S4. Will be done. Here, the beacons IDs: b4 and b5 are searched using the map table of FIG. 2 described above, and the average reception intensity thereof is also acquired.
(3) Here, the average reception intensity of the beacon ID: b4 is higher than the average reception intensity of the beacon ID: b5.
(4) Therefore, it can be determined that the person who possesses the terminal e1 is wearing the terminal e1 on the left side. In the above description, the average reception strength of the transmitter is used to determine the left and right mounting positions, but instead, the number of receptions of the public relations packet from the transmitter having a reception strength equal to or higher than a predetermined number (that is, the number of receptions). It is determined that the transmitter is mounted on the side of the transmitter with the largest number of packets).

The mounting position estimation device 1 described above may be executed once a day for each store clerk, for example. This is because terminals are not replaced very often. Further, the execution time in the day may be fixed or may be arbitrarily changed.

As described in detail above, according to the system and method of the present invention, it is possible to estimate the mounting position of the terminal in a person.
According to the present invention, the learning phase is not required and the person himself / herself does not need to walk in order to estimate the mounting position of the terminal. In particular, it is suitable for a clerk who often stands still at the counter for customer service.

With respect to the various embodiments of the present invention described above, various changes, modifications and omissions within the scope of the technical idea and viewpoint of the present invention can be easily made by those skilled in the art. The above explanation is just an example and does not attempt to restrict anything. The present invention is limited only to the claims and their equivalents.

1 Mounting position estimation device 101 Map table 11 Person terminal association unit 12 Transmitter ID search unit 13 Mounting position estimation unit 2 Transmitter 3 Terminal 4 Person detection device 5 Imaging device

Claims (10)

A transmitter that sends a public relations packet containing a different transmitter ID (IDentifier) corresponding to each of multiple areas,
A terminal that receives the public relations packet while attached to a person,
A person detection device that detects the time zone when a person's flow line exists in each area using a shooting device,
A system including a mounting position estimation device that acquires a transmitter ID, a terminal ID, and a reception strength of the public relations packet from the terminal and estimates the mounting position of the terminal in a person on a person flow line existing in the area.
The mounting position estimation device is
A map table in which the transmitter IDs of multiple transmitters to be searched are registered for each area,
A person flow line associating means for associating a target terminal that has received a publicity packet of a transmitter ID in the area with the person flow line during a time zone in which the person flow line exists in the area.
With respect to the target terminal, a transmitter ID search means for searching a transmitter ID corresponding to the area using the map table, and
A system characterized in that a person existing in the area has a mounting position estimating means for presuming that the target terminal is mounted at a position on the transmitter side having a relatively high reception intensity. The system according to claim 1, wherein the person detection device detects the time zone only when the number of people detected in the area is equal to or less than a predetermined number. Regarding the person flow line associating means of the mounting position estimation device, the target terminal relatively receives the terminal that received the most publicity packets of the transmitter ID in the area, or the publicity packets of the transmitter ID in the area. The system according to claim 1 or 2, wherein the terminal receives with a high reception strength. The system according to any one of claims 1 to 3, wherein the photographing apparatus is a camera that photographs each area or a lidar (light detection and ranging) that irradiates each area with light waves. The person detection device detects a person in both areas adjacent to each other with the counter in between, and detects a time zone in which the person in the area is positively present in the counter.
6. System. The system according to claim 5, wherein the plurality of sides of the mounting position estimation device are two or more sides located at equal angles with respect to a person. The terminal is equipped with or connected to an angular velocity sensor.
The system according to claim 5 or 6, wherein the person detection device corrects the forward orientation of the detected person based on the angular velocity received from the terminal. The terminal angular velocity sensor detects an angular velocity, or equipped with an acceleration sensor for detecting acceleration or connected,
The system according to any one of claims 1 to 6, wherein the person detection device stops functioning when the angular velocity or the acceleration received from the terminal changes by a predetermined threshold value or more. The transmitter and terminal are devices based on the same short-range wireless standard of BLE (Bluetooth Low Energy) or iBeacon (registered trademark) or wireless LAN.
The system according to any one of claims 1 to 8, wherein the transmitter ID included in the public relations packet is a beacon ID included in the Advertising Packet. A transmitter that sends a public relations packet containing different transmitter IDs corresponding to each of multiple areas,
A terminal that receives the public relations packet while attached to a person,
A person detection device that detects the time zone when a person flow line exists in each area,
Mounting position estimation of a system having a mounting position estimation device that acquires the transmitter ID, terminal ID, and reception strength of the public relations packet from the terminal and estimates the mounting position of the terminal in a person with a person flow line existing in the area. It ’s a method,
The mounting position estimation device is
Each area has a map table in which the transmitter IDs of a plurality of transmitters to be searched are registered.
The first step of associating the target terminal that received the publicity packet of the transmitter ID in the area with the person flow line during the time zone when the person flow line exists in the area, and
For the target terminal, a second step of searching for a transmitter ID corresponding to the area using the map table, and
A person present in the area has a third step of presuming that the target terminal is mounted at a position on the transmitter side having a relatively high reception intensity. Method.

Images