JP2017010391A - Person individual detection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a person individual detection system capable of correctly detecting a person individually on the basis of radio communication between a radio device and a communication device in the case where the person carries around one or more arbitrary number of communication devices.SOLUTION: A traffic line acquisition system 100 comprises: a plurality of access points 20 for performing radio communication with two communication devices 60 carried around by a person; and a server 30. The server 30 stores: communication information (first communication information) on communication between the access points and one communication device at a plurality of time points accepted from the access points 20; and communication information (second communication information) on communication between the access points and the other communication device 60 at a plurality of time points. The server includes a determination unit 35c. The determination unit makes a first determination to determine whether the two devices are carried around by the same person, or by different persons respectively. The determination unit makes the first determination on the basis of the first communication information and the second communication information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a person individual detection system, and more specifically to a person individual detection system that individually detects a person based on wireless communication between a wireless device and one or more communication devices carried by the person.

  Conventionally, there is a case where a person is individually detected based on a communication result between a wireless device installed in a store or the like and a communication device that moves with the person, and the detection result is used for various purposes.

  For example, in Patent Document 1 (Japanese Patent Laid-Open No. 2006-236146), a signal transmitted from a wireless LAN built-in device using a plurality of wireless LAN access points installed in a store is attached to a shopping cart. Is received, the position of the wireless LAN built-in device is acquired, the presence position of the person is individually detected, and the flow line of the person is grasped.

  As another example, in a store or the like, a plurality of wireless devices that communicate with one communication device (for example, a smartphone) carried by each person are arranged, and the wireless device communicates with the communication device, resulting in communication. It is also conceivable to individually detect a person's location based on information from a wireless device.

  By the way, in recent years, it is assumed that each person carries an arbitrary number (one or a plurality) of communication devices under a concept such as IoT (Internet on Things).

  Therefore, unlike the case where a fixed number of wireless LAN built-in devices are attached to a shopping cart as in Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-236146), there are a plurality of communication devices with which a wireless device communicates. It is unclear whether it is carried by the same person or by another person, and there is a possibility that the person cannot be individually detected based on the information obtained as a result of communication.

  An object of the present invention is to provide a person individual detection system capable of correctly detecting a person individually based on wireless communication between a wireless device and a communication device when a person carries one or more arbitrary number of communication devices. Is to provide.

  A person individual detection system according to a first aspect of the present invention includes a plurality of wireless devices and a server. The plurality of wireless devices perform wireless communication with the first communication device and the second communication device carried by a person. The server receives first communication information related to communication between the wireless device and the first communication device at a plurality of points of time received from the wireless device, and second communication information related to communication between the wireless device and the second communication device at a plurality of points in time. accumulate. The server has a determination unit. The determination unit performs a first determination to determine whether the first communication device and the second communication device are carried by the same person or carried by different persons. The determination unit makes a first determination based on the first communication information and the second communication information.

  In the person individual detection system according to the first aspect of the present invention, based on information (first communication information and second communication information) regarding communication at a plurality of points in time between two communication devices and a wireless device, the communication devices are: A first determination is made as to whether it is carried by the same person or carried by different people. Therefore, even when a person carries an arbitrary number of one or more communication devices, the person can be correctly detected individually.

  The person individual detection system according to the second aspect of the present invention is the person individual detection system according to the first aspect, and the first communication information is time-series information regarding the position of the first communication device. The second communication information is time-series information regarding the position of the second communication device.

  In the individual human detection system according to the second aspect of the present invention, since the first determination is made based on time-series information regarding the position of the communication device, it is accurately determined whether or not the two communication devices are carried by the same person. It is easy to judge.

  The individual human detection system according to a third aspect of the present invention is the individual human detection system according to the second aspect, wherein the determination unit is obtained from the first communication information and the second communication information, and the first communication device and the second communication information. The first determination is made based on the distance information regarding the distance to the two communication devices.

  In the person individual detection system according to the third aspect of the present invention, it is easy to accurately determine whether or not two communication devices are carried by the same person by using distance information regarding the distance between the communication devices. is there.

  The person individual detection system according to the fourth aspect of the present invention is the person individual detection system according to the second aspect or the third aspect, in which both the first communication device and the second communication device are located at predetermined locations. For the first communication information and the second communication information at the timing estimated to exist, the first determination is performed with the information weighted low.

  In the individual human detection system according to the fourth aspect of the present invention, the first communication information and the second communication information (time-series information relating to the position of the communication device) at the timing when it is determined that two communication devices are present at a predetermined location. The first determination is made with decreasing weight. Therefore, even if the two communication devices are carried by different people, a place where the two communication devices move in the same way or the two communication devices are close to each other is likely to occur (for example, The influence of information in a movie theater, a restaurant, a place where a procession can be performed, etc.) can be reduced to correctly determine whether or not the communication device is carried by the same person.

  The person individual detection system according to the fifth aspect of the present invention is the person individual detection system according to the second aspect or the third aspect, and the determination unit is configured to place both the first communication device and the second communication device at a predetermined location. For the first communication information and the second communication information at the timing estimated to exist, the first determination is made by excluding the information.

  In the individual human detection system according to the fifth aspect of the present invention, the first communication information and the second communication information (time-series information related to the position of the communication device) at the timing when it is determined that two communication devices are present at a predetermined location. The first determination is made by excluding information. Therefore, it is possible to correctly determine whether or not the communication device is carried by the same person by omitting information in a place where a situation where the communication device is placed away from a person (for example, a place where a locker is installed) is omitted.

  The individual human detection system according to a sixth aspect of the present invention is the individual human detection system according to any one of the first to fifth aspects, wherein the determination unit includes the first communication device and the second communication device, respectively. When it is determined that they are carried by different people, the first communication device and the second communication device are carried by two people belonging to the same group that act together based on the first communication information and the second communication information. A second determination is further made to determine whether it has been performed.

  In the individual human detection system according to the sixth aspect of the present invention, in addition to whether or not two devices are carried by the same person, whether or not the two devices are carried by two persons belonging to the same organization. Because it is judged, it is possible to grasp the movement of people as a group.

  In the person individual detection system according to the first aspect of the present invention, based on information (first communication information and second communication information) regarding communication at a plurality of points in time between two communication devices and a wireless device, the communication devices are: A first determination is made as to whether it is carried by the same person or carried by different people. Therefore, even when a person carries an arbitrary number of one or more communication devices, the person can be correctly detected individually.

  In the person individual detection system according to the second and third aspects of the present invention, it is easy to accurately determine whether or not the communication device is carried by the same person.

  In the person individual detection system according to the fourth and fifth aspects of the present invention, it can be accurately determined whether or not the communication device is carried by the same person.

  In the individual human detection system according to the sixth aspect of the present invention, in addition to whether or not two communication devices are carried by the same person, whether or not the two devices are carried by two persons belonging to the same organization. Therefore, it is possible to grasp the movement of people as a group.

1 is an overall schematic diagram of a flow line acquisition system according to a first embodiment of an individual human detection system of the present invention. It is the top view which showed the example of arrangement | positioning of the access point contained in the flow line acquisition system of FIG. It is an example of the installation state of the access point contained in the flow line acquisition system of FIG. The access point is disposed adjacent to the indoor unit of the air conditioner. It is a block diagram of the server contained in the flow line acquisition system of FIG. It is an example of the flowchart of the flow line acquisition process of the flow line acquisition system of FIG. It is an example of the determination result according to time zone of the relationship of the carrier of two communication devices memorize | stored in a determination result storage area. FIG. 6A is an example of a determination result when two communication devices are carried by the same person. It is an example of the determination result according to time zone of the relationship of the carrier of two communication devices memorize | stored in a determination result storage area. FIG. 6B is an example of a determination result when two communication devices are carried by persons belonging to the same group that behaves differently. It is an example of the determination result according to time zone of the relationship of the carrier of two communication devices memorize | stored in a determination result storage area. FIG. 6C is an example of determination results when two communication devices are carried by different and unrelated persons. It is an example of the determination result of the relationship between two communication device carriers for all combinations of two communication devices stored in the determination result storage area. It is a whole schematic diagram of the visitor number counting system which concerns on 2nd Embodiment of the person individual detection system of this invention. FIG. 9 is a block diagram of a server included in the visitor number counting system of FIG. 8.

  A specific example of the individual human detection system according to the present invention will be described with reference to the drawings. In addition, the specific example of the person individual detection system demonstrated below is only an illustration, and can be suitably changed in the range which does not deviate from the meaning of this invention.

<First Embodiment>
A flow line acquisition system 100 according to a first embodiment of the individual human detection system of the present invention will be described with reference to the drawings.

(1) Overall Configuration FIG. 1 is an overall schematic diagram of a flow line acquisition system 100.

  The flow line acquisition system 100 includes a plurality of wireless LAN access points 20 and a server 30 (see FIG. 1). The access point 20 and the server 30 are connected by a communication line 40.

  The flow line acquisition system 100 is a system that acquires a flow line of a person carrying the communication device 60 for each person. More specifically, the flow line acquisition system 100 calculates the position of the communication device 60 in time series, identifies the communication device 60 carried by the same person among the plurality of communication devices 60, and identifies each person by person. It is a system that acquires human traffic lines. In the flow line acquisition system 100, a person who does not carry the communication device 60 is excluded from the flow line acquisition by the flow line acquisition system 100.

  The access point 20 is an example of a wireless device that performs wireless communication with a communication device 60 carried by a person. The access point 20 is installed in a space R (sale floor etc.) in a commercial facility such as a supermarket (see FIG. 2). Specifically, one access point 20 is attached adjacent to each of the plurality of indoor units 50 of the air conditioner installed on the ceiling of the space R (see FIG. 3). The indoor units 50 are generally installed at substantially equal intervals over the entire space R so that the entire area of the space R is subject to air conditioning. Therefore, the access points 20 attached adjacent to the indoor unit 50 are installed at substantially equal intervals throughout the space R, for example, as shown in FIG.

  The server 30 accumulates communication information regarding the communication between the access point 20 and the communication device 60 at a plurality of times received from the access point 20. Moreover, the server 30 acquires the flow line of the person carrying the communication device 60 for each person based on the communication information regarding the communication between the access point 20 and the communication device 60 at a plurality of points in time. The server 30 is installed in a commercial facility where the access point 20 is installed, for example, in a back yard of the commercial facility.

  Here, the air-conditioning communication line that connects the control unit (not shown) of the indoor unit 50 of the air conditioner and the control unit (not shown) of the outdoor unit using the data superposition technique is used as the access point 20 and the server. 30 is also used as a communication line 40 for connecting to 30. Thereby, the expense and effort which install separately the communication line which connects the access point 20 and the server 30 can be saved.

  In the present embodiment, the communication device 60 that performs wireless communication with the access point 20 (the communication device 60 that exists in the space R) includes the communication device 60A and the communication device 60B that are carried by the person P1, and the communication device that is carried by the person P2. 60C, a communication device 60D carried by the person P3, a communication device 60E carried by the person P4, and a communication device 60F carried by the person P5. Here, it is assumed that the person P2 and the person P3 belong to one organization G that acts together, and other persons are assumed to be unrelated to each other.

  Here, there are five persons and six communication devices 60 in the space R, but the present invention is not limited to this. The number of people and the number of communication devices 60 in the space R are arbitrary. Here, only a maximum of two communication devices 60 are carried by a person, but the present invention is not limited to this, and there may be a person carrying three or more communication devices 60.

  The communication device 60 carried by a person includes, for example, a smartphone, a tablet PC, a wearable terminal such as a wristband type, a wristwatch type, and a glasses type, a digital camera, and the like. The communication device 60 may be attached to shoes or clothes worn by a person, a bag carried by a person, or the like. However, the communication device 60 is not limited to these, and includes various communication devices that perform wireless communication with the access point 20.

  Each communication device 60 has a unique identification code (hereinafter referred to as a device ID). The communication device 60 transmits a radio wave (radio wave signal) including a device ID as information. In addition, from each communication device 60, information for identifying the user of the communication device 60 is not transmitted from the viewpoint of protecting personal information.

  Radio waves are transmitted from each communication device 60 periodically, for example, at intervals of 5 seconds. However, the transmission interval of the radio wave from the communication device 60 is an example, and is not limited to this.

(2) Detailed configuration (2-1) Access point The access point 20 receives radio waves transmitted by the communication device 60. The access point 20 detects the intensity of the radio wave received from the communication device 60.

  The access point 20 generates information about radio waves for each radio wave received from the communication device 60. For each radio wave, the radio wave information includes the time when the access point 20 received the radio wave, the device ID included as information in the received radio wave, and the value related to the strength of the radio wave detected by the access point 20. Including. The access point 20 transmits information about the generated radio wave to the server 30 together with an identification code unique to each access point 20 (hereinafter referred to as a wireless device ID).

  Here, each time the access point 20 receives a radio wave from the communication device 60, the access point 20 generates information about the received radio wave and transmits the generated information about the radio wave to the server 30. However, it is not limited to this. For example, the access point 20 may generate information about radio waves for each of the plurality of radio waves after receiving the radio waves a plurality of times, and transmit these to the server 30. Further, for example, the access point 20 may generate information on radio waves each time it receives radio waves, and may transmit the generated information on radio waves to the server 30 in a plurality of times.

(2-2) Server The server 30 is a general-purpose computer.

  The server 30 stores information regarding radio waves received from the plurality of access points 20. Specifically, the server 30 stores the information regarding the radio waves of each communication device 60 received from the plurality of access points 20 as communication information regarding communication between the access point 20 and the communication device 60 at a plurality of points in time. . Communication information regarding communication between the access point 20 and a certain communication device 60 is time-series information regarding the position of the communication device 60.

  Based on communication information related to communication between the access point 20 and the two communication devices 60, the server 30 is carried by the same person or by different people. (This determination may be hereinafter referred to as a first determination). The server 30 acquires a person's flow line for each person based on the communication information regarding the communication between the access point 20 and the communication device 60 and the determination result of the first determination.

  Further, when the server 30 determines that the two communication devices 60 are carried by different persons by the first determination, the server 30 is based on communication information regarding communication between the access point 20 and the communication devices 60. It is determined whether these communication devices 60 are carried by two persons belonging to the same group that act together or by two unrelated persons (this determination is referred to as a second determination below). Sometimes called).

As illustrated in FIG. 4, the server 30 mainly includes a communication unit 31, an input unit 32, an output unit 33, a storage unit 34, and a control unit 35.

(2-2-1) Communication Unit The communication unit 31 is a communication interface that enables communication between the access point 20 and the server 30 via the communication line 40.

The server 30 receives information regarding the wireless device ID and the radio wave from the access point 20. The received information regarding the wireless device ID and the radio wave is stored in a communication information storage area 34a of the storage unit 34 to be described later.

(2-2-2) Input unit The input unit 32 is, for example, a keyboard or a mouse. Various information and various commands are input to the input unit 32 by an operator of the server 30 or the like.

  (2-2-3) Output unit The output unit 33 is, for example, a liquid crystal display. Various kinds of information are output (displayed) to the output unit 33.

  The output unit 33 displays, for example, a screen in which a human flow line acquired by the control unit 35 is drawn with lines on a plan view of the space R in which the access point 20 is installed.

  When the flow lines of a plurality of people are shown on one screen, the output unit 33 includes, for example, different types of lines or different color lines for each person on the plan view of the space R. Is displayed. Also, for people belonging to the same organization, output so that it can be seen that they belong to the same organization (for example, the flow lines of people belonging to the same organization are displayed in the same color line) A person's flow line is displayed in the part 33.

  In addition, the display method of the person's flow line by the output part 33 is an illustration, Comprising: It is not limited to this.

(2-2-4) Storage Unit The storage unit 34 is mainly configured by a ROM, a RAM, and a hard disk.

  The storage unit 34 stores various programs executed by the control unit 35.

  Various information is stored in the storage unit 34. For example, the storage unit 34 stores information regarding the installation position of each of the plurality of access points 20 in the space R.

  The storage unit 34 includes a communication information storage area 34a, a position information storage area 34b, a distance information storage area 34c, and a threshold storage area as storage areas for main information related to individual human detection and human flow line acquisition. 34d, a determination result storage area 34e, an area storage area 34f, a determination result storage area 34g, and a human position information storage area 34h.

(2-2-4-1) Communication Information Storage Area In the communication information storage area 34a, information related to the wireless device ID and radio waves received by the server 30 from the access point 20 via the communication line 40 is stored. The radio wave information includes the time when the access point 20 having the radio ID transmitted together with the radio wave information receives a certain radio wave, the device ID included as information in the radio wave, and the intensity of the radio wave. Value (value relating to the intensity of the radio wave detected by the access point 20). In the communication information storage area 34a, for each device ID, a wireless device ID, a radio wave reception time, and a value related to the radio wave intensity are stored in association with each other. Information about a certain device ID (information in which a wireless device ID, a reception time of a radio wave, and a value related to the strength of a radio wave are associated with each other) stored in the communication information storage area 34a is a communication device of that device ID. 60, communication information relating to communication between the access point 20 and the communication device 60 at a plurality of points in time.

(2-2-4-2) Position Information Storage Area In the position information storage area 34b, communication between the access point 20 and the communication device 60 at a plurality of time points for each device ID stored in the communication information storage area 34a. Based on the information, the position of each communication device 60 calculated by a position calculation unit 35a of the control unit 35 described later is stored as time-series information (by time).

(2-2-4-3) Distance information storage area In the distance information storage area 34c, a time series relating to the distance between two different communication devices 60 calculated by the distance calculation section 35b of the control section 35 described later is provided. The distance information (by time zone) is stored in association with the device IDs of the two communication devices 60 for which the distance is to be calculated.

(2-2-4-4) Threshold Storage Area In the threshold storage area 34d, a determination unit 35c of the control unit 35 described later indicates that the two communication devices 60 are carried by the same person or are different from each other. A first threshold value D1 related to the distance, which is used when determining whether the user is carrying the object, is stored.

  Further, in the threshold storage area 34d, a determination unit 35c of the control unit 35 described later includes two persons (for example, the person P2 and the person P3 in FIG. 1) belonging to the same group in which the two communication devices 60 act together. Or a second threshold value D2 relating to the distance used when determining whether it is carried by two unrelated persons (for example, person P4 and person P5 in FIG. 1).

  The first threshold value D1 and the second threshold value D2 may be stored in advance in the threshold value storage area 34d, or may be input by the user of the flow line acquisition system 100 from the input unit 32.

(2-2-4-5) Determination Result Storage Area In the determination result storage area 34e, a determination unit 35c of the control unit 35 described later is based on the distance between the two communication devices 60 in a certain time zone (distance information). Based on the distance information between the two communication devices 60 stored in the storage area 34c in a certain time zone), the result of determining the relationship between the carriers of the communication devices 60 is stored. In the determination result storage area 34e, the determination result is stored as time-series (by time zone) information in association with the device IDs of the two communication devices 60 to be determined (see FIGS. 6A to 6C). ).

  In FIG. 6A to FIG. 6C, “same” means that the carriers of the two communication devices 60 are determined to be the same person. “Organization” means that the carriers of the two communication devices 60 are determined to be two different people belonging to the same organization. “Unrelated” means that the carriers of the two communication devices 60 are different people and are determined to be two unrelated persons.

  As will be described later, based on the determination result stored in the determination result storage area 34e, the determination unit 35c has two communication devices 60 that are carried by the same person or belong to the same group that acts together. It is judged comprehensively whether it is carried by a person or by two unrelated persons.

(2-2-4-6) Area storage area In the area storage area 34f, a determination unit 35c of the control unit 35 described later is a distance between two communication devices 60 at a predetermined timing (referred to as a first timing). Information used for making the first determination and the second determination with the information weighted low is stored. In addition, in the area storage area 34f, a determination unit 35c of the control unit 35 described later excludes distance information between the two communication devices 60 at a predetermined timing (referred to as second timing) and performs the first determination and the first determination. 2 Information used to make a decision is stored.

  In the first timing, even if two communication devices 60 are carried by unrelated persons, the determination unit 35c of the control unit 35 described later is the same when the communication devices 60 are the same person or act together. This is the timing when it is estimated that both of these communication devices 60 exist in the area X (see FIG. 2) that may be determined to be carried by two persons belonging to the group. In the area X, even if the two communication devices 60 are carried by different people, the two communication devices 60 move in the same manner or the two communication devices 60 are close to each other. For example, a cafeteria, a movie theater, a place where a procession can be made, etc.

  In the second timing, even if two different communication devices 60 are carried by unrelated persons, the determination unit 35c of the control unit 35 described later causes the communication devices 60 to be the same person or act together. This is the timing when it is estimated that both of the communication devices 60 exist in an area Y (see FIG. 2) that is likely to be determined as being carried by two persons belonging to the same group. The area Y is, for example, a place where a situation where the communication device 60 is placed away from a person occurs, specifically an installation place such as a locker.

  In addition, the example of the area X and the area Y is not limited to said place.

  Specifically, information relating to area X and area Y is stored in the area storage area 34f. More specifically, the area storage area 34f stores area X position information and area Y position information.

(2-2-4-7) Determination Result Storage Area The determination result storage area 34g stores the results of the first determination and the second determination performed by the determination unit 35c of the control unit 35 described later. In the determination result storage area 34g, for example, as shown in FIG. 7, it is associated with the device IDs of two different communication devices 60, and it is determined that the communication devices 60 are determined to be carried by the same person. It is memorized whether it was judged that it was carried by two persons belonging to the group of, or was carried by two unrelated persons.

  In FIG. 7, “same” means that it is determined that the two communication devices 60 are carried by the same person. “Organization” means that it is determined that two communication devices 60 are carried by two persons who are different persons and belong to the same group. “Unrelated” means that the two communication devices 60 are determined to be carried by two unrelated persons who are different persons.

(2-2-4-8) Person position storage area In the person position information storage area 34h, the time position series of the communication device 60 stored in the position information storage area 34b is stored in the person position determination section 35d of the control section 35 described later. And the first determination result stored in the determination result storage area 34g (whether or not the two communication devices 60 are carried by two persons belonging to the same organization) The position of the person determined for each person is stored as time-series information. The time-series information on the position of the person stored in the person position information storage area 34h is, in other words, information on a person's flow line indicating the path (trajectory) of the person's movement.

(2-2-5) Control unit The control unit 35 mainly includes a CPU. The control unit 35 executes the various programs stored in the storage unit 34, thereby acquiring the human flow line in the space R for each person.

  The control unit 35 executes various programs stored in the storage unit 34, so that the position calculation unit 35a, the distance calculation unit 35b, the determination unit 35c, and the human position determination unit 35d are mainly related to the acquisition of the human flow line. Function as.

(2-2-5-1) Position Calculation Unit The position calculation unit 35a stores communication information (wireless) between the access point 20 and the communication device 60 at a plurality of time points for each device ID stored in the communication information storage area 34a. The position of each communication device 60 is calculated based on the machine ID, the reception time of the radio wave, and the value related to the strength of the radio wave).

  The position calculation unit 35a calculates the position of each communication device 60 using, for example, a position calculation method based on an RSSI (Received Signal Strength Indicator) method.

  Specifically, when calculating the position of a certain communication device 60 (communication device 60 having a certain device ID) at a certain time, the position calculating unit 35a obtains the device ID from the communication information storage area 34a at a certain time, Then, a value related to the strength of the radio wave and a radio device ID associated with the reception time of the radio wave substantially the same as a certain time are called. The reception time of a radio wave substantially the same as a certain time means a reception time whose time difference from the certain time is smaller than a predetermined value (for example, 0.01 seconds). Then, the position calculation unit 35a selects three values in descending order from the value related to the radio wave intensity at a certain time and the reception time of the radio wave substantially the same as the certain time, and is associated with the selected value related to the radio wave intensity. Identify the radio ID. In addition, the position calculation unit 35a determines the distance from each of the identified three wireless device ID access points 20 to the target communication device 60 from the value related to the strength of the radio wave associated with each wireless device ID. The position satisfying the distance relationship calculated for all the access points 20 of the three wireless device IDs is calculated as the position of the communication device 60. The relationship between the value relating to the strength of the radio wave and the distance from the access point 20 is stored in advance in the storage unit 34 as a table or a mathematical expression.

  Note that the method for calculating the position of the communication device 60 by the position calculation unit 35a is an example, and the present invention is not limited to this.

  For example, when calculating the position of a certain communication device 60 (communication device 60 with a certain device ID) at a certain time, the position calculation unit 35a stores the same in the communication information storage area 34a as in the case of using the RSSI method. Based on the communication information of the device ID, three values are selected in descending order from the value related to the radio wave intensity at a certain time and the reception time of the radio wave substantially the same as the certain time, and the value relating to the selected radio wave intensity The wireless device ID associated with is identified. Then, the position calculation unit 35a uses a so-called TOA (Time of Arrival) method or a TDOA (Time Difference of Arrival) method for calculating the position based on the radio wave reception times of the access points 20 of the specified three wireless device IDs. It may be used to calculate the position of the communication device 60.

  Further, for example, when calculating the position of a certain communication device 60 (communication device 60 with a certain device ID) at a certain time, the position calculating unit 35a stores the same in the communication information storage area 34a as in the case of using the RSSI method. Based on the communication information of the device ID, the three values are selected in descending order from the value related to the radio wave intensity at a certain time and the reception time of the radio wave substantially the same as the certain time, and the selected radio wave intensity The radio ID associated with the value for is specified. And the position calculation part 35a may calculate the gravity center position of the access point 20 of three specified radio | wireless machine ID as a position of the communication device 60 using what is called a gravity center method.

  For example, when the position calculation unit 35a calculates the position of a certain communication device 60 (the communication device 60 with a certain device ID) at a certain time, the communication information of the device ID stored in the communication information storage area 34a. Based on the above, the largest value is selected from the values related to the radio wave intensity at a certain time and the reception time of the radio wave that is almost the same as the certain time, and the radio ID associated with the selected radio wave intensity value is specified. To do. Then, the position calculation unit 35 a may calculate the position of the access point 20 with the specified wireless device ID as the position of the communication device 60.

  For example, when calculating the position of the communication device 60 with a certain device ID, the position calculation unit 35a firstly has the earliest time (first earliest among the reception times of radio waves stored in the communication information storage area 34a. Time) and the reception time of the radio wave substantially the same as the first earliest time, and the information (value relating to the strength of the radio wave and the wireless device ID) associated with the position of the communication device 60 at the first earliest time Is calculated. Next, the position calculation unit 35a specifies the earliest time (second earliest time) from among the first earliest time and the reception time of the radio wave substantially the same as the first earliest time, 2 of the communication device 60 of the second earliest time by using the information associated with the earliest time and the reception time of the radio wave substantially the same as the second earliest time (the value related to the strength of the electric wave and the radio ID). Calculate the position. The position calculation unit 35a repeatedly performs the same processing on the information associated with the communication device 60 having a certain device ID stored in the communication information storage area 34a, thereby determining the position of the communication device 60 in time series. Calculate as information.

  The time-series information of the position of each communication device 60 calculated by the position calculation unit 35a is stored in the position information storage area 34b.

(2-2-5-2) Distance Calculation Unit The distance calculation unit 35b includes two communication devices based on the time-series position information of the communication device 60 for each device ID stored in the position information storage area 34b. The distance between 60 is calculated. Specifically, the distance calculation unit 35b communicates information on the position of the communication device 60 with a certain device ID stored in the position information storage area 34b at a certain time (referred to as a reference time) and communication with another device ID. The distance between the two communication devices 60 in a certain time zone is calculated using the position information of the device 60 at the comparison time close to the reference time. Here, the comparison time is, for example, a time within the radio wave transmission interval of the communication device 60 with respect to the reference time. Further, when the comparison time is a time before the reference time, the certain time zone is, for example, a time zone from the time before the reference time to the reference time by the radio wave transmission interval. Further, when the comparison time is a time later than the reference time, the certain time zone is, for example, a time zone from the reference time to a time after the radio wave transmission interval from the reference time.

  The distance calculation unit 35b calculates the distance from the communication device 60 with another device ID for each time zone, with respect to the communication device 60 with a certain device ID, using all the times stored in the position information storage area 34b as the reference time. Then, the distance calculation unit 35b calculates the distance between the two communication devices 60 for each combination of two device IDs for each time zone.

  The distance between the two communication devices 60 for each time zone calculated by the distance calculation unit 35b is stored in the distance information storage area 34c as time-series distance information.

(2-2-5-3) Determination Unit The determination unit 35c performs a first determination to determine whether the two communication devices 60 are carried by the same person or carried by different people. Do. Specifically, the determination unit 35c performs the first determination based on communication information for each device ID (information regarding communication between the access point 20 and the communication device 60 at a plurality of time points for each device ID). In other words, the determination unit 35c performs the first determination based on time-series information regarding the position of the communication device 60 for each device ID. More specifically, the determination unit 35c performs the first determination based on distance information regarding the distance between the two communication devices 60 obtained from the communication information for each device ID.

  In addition, when the determination unit 35c determines that the two communication devices 60 are carried by different persons, the two different communication devices 60 perform actions based on the communication information for each device ID. A second determination is made to determine whether the mobile phone is carried by two persons belonging to the same group (for example, friends, family, etc.). More specifically, when the determination unit 35c determines that the two communication devices 60 are carried by different persons, between the two communication devices 60 obtained from the communication information for each device ID. The second determination is made based on the distance information regarding the distance.

  The first determination and the second determination performed by the determination unit 35c will be described in detail later.

(2-2-5-4) Person Position Determination Unit The person position determination unit 35d stores the time-series position information of each communication device 60 stored in the position information storage area 34b and the determination result storage area 34g. Based on the result of the first determination, time-series information of the position of the person is determined for each person. In other words, the information on the position of the person in time series is information on the flow line of the person indicating the route (trajectory) along which the person moves. That is, the person position determination unit 35d acquires information on the person's flow line by person by determining time-series information of the person's position for each person.

  Specifically, the person position determination unit 35d stores the position information storage area 34b when it is determined that a certain communication device 60 and another communication device 60 are carried by the same person as a result of the first determination. Based on the stored time-series position information of the two communication devices 60, the position of the person carrying both the communication devices 60 is determined. More specifically, when it is determined that the two communication devices 60 are carried by the same person, the distance calculation unit 35b stores the communication device 60 of one device ID stored in the position information storage area 34b. The position information at a certain time (first time) and the second time close to the first time of the communication device 60 of the other device ID (for example, the radio wave transmission interval of the communication device 60 with respect to the first time) The position of the person at the intermediate time between the first time and the second time is determined using the position information at the time within 5 seconds).

  When it is determined as a result of the first determination that N (three or more) communication devices 60 are carried by the same person, the person position determination unit 35d may, for example, What is necessary is just to determine the position of a person. The human position determination unit 35d stores the position information of the communication device 60 having a certain device ID stored in the position information storage area 34b at a certain time (first time) and the other (N−1) device IDs. Information on the position of each communication device 60 at a corresponding time close to the first time (for example, a time within 5 seconds that is a radio wave transmission interval of the communication device 60 with respect to the first time), and N The center-of-gravity position of each communication device 60 may be determined as the position of the person at the central time of the earliest and last time among the (N-1) corresponding times close to the first time and the first time. .

  If it is determined as a result of the first determination that the person carrying the communication device 60 does not carry any other communication device 60, the person position determination unit 35d stores the information stored in the position information storage area 34b. The time-series position information of the communication device 60 is determined as the time-series position information of the user of the communication device 60.

(3) Flow Line Acquisition Processing The human flow line acquisition processing for each person by the flow line acquisition system 100 will be described based on the flowchart of FIG.

  At the start of the flow line acquisition process, the server 30 has already received communication information for each device ID from the access point 20 at the time when the flow line acquisition process is desired to be performed. It is assumed that it is stored in the storage area 34a.

  In step S1, the position calculation unit 35a calculates the position of each communication device 60 for each time based on the communication information for each device ID stored in the communication information storage area 34a, and uses the calculation result as time-series position information. Store in the location information storage area 34b.

  For example, when there are six communication devices 60A to 60F as shown in FIG. 1 in the space R, the position calculation unit 35a is classified by the communication device 60 stored in the communication information storage area 34a. Based on the communication information, the positions of the six communication devices 60 are calculated for each time, and the calculation results are stored in the position information storage area 34b as time-series position information.

  In step S2, the distance calculation unit 35b calculates the distance for each time zone for all combinations of the two communication devices 60 based on the time-series position information for each device ID stored in the position information storage area 34b. The calculation result is stored in the distance information storage area 34c as time-series distance information (by time zone).

  For example, when there are six communication devices 60A to 60F as shown in FIG. 1 in the space R, the distance calculation unit 35b is classified by the communication device 60 stored in the position information storage area 34b. Based on the time-series position information, the distance between the two communication devices 60 is calculated according to the time zone for all combinations for selecting two of the six communication devices 60 (for 15 combinations). The result is stored in the distance information storage area 34c as time-series position information.

  Next, in step S3, the determination unit 35c relates to a combination of two communication devices 60, and the distance between the communication devices 60 in the earliest time zone stored in the distance information storage region 34c is the threshold storage region 34d. It is determined whether it is below the 1st threshold value D1 memorize | stored.

  For example, the first threshold value D1 is a value obtained by multiplying the expected movement speed of the person by the time of the radio wave transmission interval of the communication device 60.

  In addition, the determination method of the 1st threshold value D1 used by step S3 is an illustration, Comprising: It is not limited to said method. For example, the first threshold value D1 is set to an appropriate value based on a field test or the like so that the determination as to whether or not the two communication devices 60 are carried by the same person can be realized with relatively high accuracy. Also good.

  When two communication devices 60 (for example, communication devices 60A and 60B in FIG. 1) are carried by the same person (for example, person P1 in FIG. 1), the two communication devices 60 in one time zone. Is likely to exist at a distance equal to or less than the first threshold value D1. Therefore, in step S3, the determination unit 35c determines that the distance between the communication devices 60 in a certain time zone, which is stored in the distance information storage area 34c, is stored in the threshold storage area 34d with respect to a combination of two communication devices 60. When it determines with it being below the 1st threshold value D1 memorize | stored, it determines with the two communication devices 60 being carried by the same person about the time slot | zone (step S4).

  On the other hand, in step S3, the determination unit 35c relates to a combination of two communication devices 60, and the distance between the communication devices 60 in the earliest time zone stored in the distance information storage region 34c is the threshold storage region 34d. When it is determined that the value is larger than the first threshold value D1 stored in, it is determined that the two communication devices 60 are carried by different persons for the time period. In addition, the determination unit 35c stores the distance between the communication devices 60 in the earliest time zone stored in the distance information storage area 34c in the threshold storage area 34d with respect to a combination of two communication devices 60. It is determined whether or not it is equal to or less than the second threshold value D2 (step S5).

  For example, the second threshold value D2 is a value obtained by multiplying the expected movement speed of a person by the time of the transmission interval of the radio wave of the communication device 60, and the distance between persons when friends and family walk next to each other. This is a value obtained by adding a general distance value.

  Note that the method of determining the second threshold value D2 used in step S5 is merely an example, and is not limited to the above method. For example, the second threshold value D2 is used for a field test or the like so that the determination as to whether or not two communication devices 60 are carried by two persons belonging to the same organization that acts together is performed with relatively high accuracy. An appropriate value may be set based on this.

  Two communication devices 60 (for example, communication devices 60C and 60D in FIG. 1) belong to the same organization that acts together (for example, people P2 and P3 that belong to the same organization G that acts together in FIG. 1). ), The two communication devices 60 are likely to exist at a distance equal to or smaller than the second threshold value D2 within one time period. Therefore, in step S5, the determination unit 35c determines that the distance between the communication devices 60 in a certain time zone stored in the distance information storage area 34c is stored in the threshold storage area 34d with respect to a combination of two communication devices 60. When it determines with it being below the 2nd threshold value D2 memorize | stored, it determines with the two communication devices 60 being carried by the two persons who belong to the same organization about the time slot | zone (step S6).

  On the other hand, in step S5, the determination unit 35c determines that the distance between the communication devices 60 in a certain time zone stored in the distance information storage area 34c is stored in the threshold storage area 34d with respect to the combination of two communication devices 60. When it determines with it being larger than the memorize | stored 2nd threshold value D2, it determines with the two communication devices 60 being carried by two unrelated persons about the time slot | zone (step S7).

  After step S4, step S6, or step S7 ends, the process proceeds to step S8. In step S8, communication devices for all time zones stored in the distance information storage area 34c with respect to the combination of the two communication devices 60 for which the carrier is determined in the previous step S4, step S6, or step S7. For the distance between 60, it is determined whether or not the determination process has been performed in step S3. If there is a time zone in which the determination process in step S3 has not yet been performed, the process returns to step S3, and the process for the next time period in which the determination process was performed in the previous step S3 is executed.

  In step S8, the distance between the communication devices 60 in all time zones is determined in step S3 with respect to the combination of the two communication devices 60 that have been determined as the carrier in step S4, step S6, or step S7 immediately before. If it is determined that the process has been performed, the process proceeds to step S9.

  In step S9, it is determined whether or not the determination processing after step S3 has been performed for all combinations of the two communication devices 60 stored in the distance information storage area 34c. If there is a combination of two communication devices 60 that has not yet been subjected to determination processing, the process returns to step S3, and a combination of two communication devices 60 that has not yet been subjected to determination processing subsequent to step S3. Then, the determination process after step S3 is executed. On the other hand, when it is determined that the determination process after step S3 is performed for all the combinations of the two communication devices 60, the process proceeds to step S10.

  At the end of step S9, the determination result of the relationship between the two communication devices 60 by time zone is stored in the determination result storage area 34e for all combinations of the two communication devices 60. Yes. FIG. 6A to FIG. 6C are examples of determination results of the relationship between the two communication devices 60 by time, which are stored in the determination result storage area 34e. Here, FIG. 6A is an example of a determination result of the relationship of the carrier for each time zone of the communication device 60A and the communication device 60B of FIG. FIG. 6B is an example of a determination result of the relationship of the carrier for each time zone of the communication device 60C and the communication device 60D of FIG. FIG. 6C is an example of the determination result of the relationship between the carriers for each time zone of the communication device 60E and the communication device 60F in FIG.

  In step S10, the determination unit 35c performs the first determination and the second determination on the communication devices 60 based on the communication information of the two communication devices 60 (note that the determination unit 35c is carried by the same person in the first determination). If it is determined that there is, the second determination is not performed). More specifically, the determination unit 35c uses the determination result of the relationship between the carriers for each time zone for the combination of the communication devices 60 based on the communication information of the two communication devices 60, and uses these communication devices. 60 is determined whether it is carried by the same person, carried by two persons belonging to the same group that acts together, or carried by two unrelated persons.

  Specifically, the determination unit 35c, for example, shows the relationship of the carrier determined most frequently among the determination results of the relationship of the carriers by time zone for each combination of the two communication devices 60 ( The relationship of the carrier having the highest number of appearances) is determined as the relationship of the carrier who carries the two communication devices 60 included in the combination.

  For example, as shown in FIG. 6A showing the determination result of the relationship between the first communication device (communication device 60A) and the second communication device (communication device 60B) according to the time zone, “same” When the determination is the most, the determination unit 35c performs a first determination that the communication device 60A and the communication device 60B are carried by the same person.

  For example, as shown in FIG. 6B showing the result of determination of the relationship between the first communication device (communication device 60C) and the second communication device (communication device 60D) according to the time zone, the “organization” When the determination is the most, the determination unit 35c performs a first determination that the communication device 60C and the communication device 60D are carried by different people. Furthermore, the determination unit 35c performs a second determination that the communication device 60C and the communication device 60D are carried by two people belonging to the same group that acts together.

  For example, as shown in FIG. 6C showing the determination result of the relationship between the first communication device (communication device 60E) and the second communication device (communication device 60F) according to the time zone, “unrelated” When the determination is the most, the determination unit 35c performs a first determination that the communication device 60E and the communication device 60F are carried by different people. Furthermore, the determination unit 35c performs a second determination that the communication device 60E and the communication device 60F are carried by two unrelated persons.

  Note that the determination unit 35c, for example, at a timing (first timing) at which it is estimated that the two communication devices 60 that perform the determination of the carrier exist in the area X stored in the area storage area 34f. For the communication information of these communication devices 60, the first determination and the second determination are performed with the information weighted low. Specifically, the distance information between the two communication devices 60 in a certain time zone stored in the distance information storage area 34c is the position information of the communication device 60 when both communication devices 60 exist in the area X. The determination unit 35c performs the first determination and the second determination on the determination result of the relationship between the carriers of the two communication devices 60 in the time period by reducing the weighting of the information.

  For example, the determination result of the relationship between the carriers of the two communication devices 60 is shown in FIG. 6B, and the basis of the determination of the time zone T1 is between the two communication devices 60 in the time zone T1. It is assumed that the distance information is generated from the position information of the communication device 60 when both communication devices 60 exist in the area X. In this case, the determination unit 35c does not count the determination result of the time zone T1 as having appeared “same” once, but counts, for example, 0.3 times.

  Further, the determination unit 35c, for example, at the timing (second timing) at which it is estimated that the two communication devices 60 that perform the determination of the carrier exist in the area Y stored in the area storage area 34f. For the communication information of those communication devices 60, the first determination and the second determination are performed by excluding the information. Specifically, the distance information between two communication devices 60 in a certain time zone stored in the distance information storage area 34c indicates the position of the communication device 60 when both communication devices 60 exist in the area Y. When the information is generated by information, the determination unit 35c excludes the determination result of the relationship between the carriers of the two communication devices 60 in the time period from the determination.

  For example, the determination result of the relationship between the carriers of the two communication devices 60 is shown in FIG. 6B, and the basis of the determination of the time zone T1 is between the two communication devices 60 in the time zone T1. It is assumed that the distance information is generated from the position information of the communication device 60 when both communication devices 60 exist in the area Y. In this case, the determination unit 35c does not count that the determination result (“same”) in the time zone T1 has appeared.

  Here, in order to simplify the description, the case where a person carries three or more communication devices 60 is not illustrated in FIG. 1, but the determination unit 35 c has three or more communication devices 60 identical to each other. When carried by a person, the following determination may be made. For example, it is determined that the first communication device 60 and the second communication device 60 are carried by the same person, and the second communication device 60 and the third communication device 60 are carried by the same person. If it is determined that the first communication device 60 and the third communication device 60 are carried by two persons belonging to the same organization (the same) The three communication devices 60 may determine that they are carried by the same person (even if it is not determined that they are carried by a person).

  Further, here, in order to simplify the explanation, when a person carries two or more communication devices 60, the case where the person belongs to the same organization as another person is not illustrated in FIG. For example, the unit 35c may determine that a person carrying two or more communication devices 60 and another person belong to the same group as follows. For example, it is determined that the first communication device 60 and the second communication device 60 are carried by the same person, and the second communication device 60 and the third communication device 60 belong to the same group. If it is determined that the first communication device 60 and the third communication device 60 are carried by two unrelated persons, the determination unit 35c The first communication device 60 and the third communication device 60 may be determined to be carried by two persons belonging to the same organization.

  When the determination unit 35c completes step S10, in other words, completes the first determination (second determination if necessary) for all combinations of the two communication devices 60, all of the two communication devices 60 are complete. A determination result as shown in FIG. 7 is obtained for these combinations.

  Next, in step S11, the human position determination unit 35d uses the time-series position information of each communication device 60 stored in the position information storage area 34b and the result of the first determination stored in the determination result storage area 34g. Based on the person, the position of the person in time series is determined and stored in the person position information storage area 34h. In other words, in step S11, the person position determination unit 35d acquires the flow line information of each person and stores it in the person position information storage area 34h.

(4) Features (4-1)
A flow line acquisition system 100 as an example of a person individual detection system according to the present embodiment includes a plurality of access points 20 and a server 30. The access point 20 is an example of a wireless device. The plurality of access points 20 perform wireless communication with the first communication device 60 and the second communication device 60 carried by a person. The server 30 receives from the access point 20 communication information (first communication information) regarding communication between the access point 20 and the first communication device 60 at a plurality of points in time, and the access point 20 and the second communication device at a plurality of points in time. And communication information (second communication information) related to communication with 60 is stored. The server 30 includes a determination unit 35c. The determination unit 35c performs a first determination to determine whether the first communication device 60 and the second communication device 60 are carried by the same person or carried by different persons. The determination unit 35c performs the first determination based on the first communication information and the second communication information.

  Here, based on information (first communication information and second communication information) regarding communication between the two communication devices 60 and the access point 20 at a plurality of points in time, are the communication devices 60 carried by the same person? Alternatively, a first determination is made as to whether each person is carried by a different person. Therefore, even when a person carries one or more arbitrary number of communication devices 60, the person can be detected correctly individually.

(4-2)
In the flow line acquisition system 100 according to the present embodiment, the first communication information is time-series information regarding the position of the first communication device 60. The second communication information is time-series information regarding the position of the second communication device 60.

  Here, since the first determination is made based on time-series information regarding the position of the communication device 60, it is easy to accurately determine whether or not the two communication devices 60 are carried by the same person.

(4-3)
In the flow line acquisition system 100 according to the present embodiment, the determination unit 35c uses the distance information related to the distance between the first communication device 60 and the second communication device 60 obtained from the first communication information and the second communication information. A first determination is made based on this.

  Here, it is easy to accurately determine whether or not the two communication devices 60 are carried by the same person by using distance information regarding the distance between the communication devices 60.

(4-4)
In the flow line acquisition system 100 according to the present embodiment, the determination unit 35c has a first timing (first timing) at which it is estimated that both the first communication device 60 and the second communication device 60 exist in the area X. For the communication information and the second communication information, the first determination is performed with the information weighted low.

  Here, the communication information of the two communication devices 60 (time-series information regarding the position of the communication device 60) at the timing when the two communication devices 60 are determined to exist in the area X is subjected to the first determination by reducing the weight. Is done. Therefore, even if the two communication devices 60 are carried by different people, the situation where the two communication devices 60 move in the same manner or the two communication devices 60 exist in close proximity is likely to occur. It is possible to reduce the influence of information in the area X (for example, a movie theater, a restaurant, a place where a procession can be performed) and correctly determine whether or not the communication device 60 is carried by the same person.

(4-5)
In the flow line acquisition system 100 according to the present embodiment, the determination unit 35c has a first timing (second timing) at which it is estimated that both the first communication device 60 and the second communication device 60 exist in the area Y. For the communication information and the second communication information, the first determination is made by excluding the information.

  Here, for the communication information of the two communication devices 60 at the timing when it is determined that the two communication devices 60 exist in the area Y (time-series information regarding the position of the communication device 60), the first information is excluded. Judgment is made. For this reason, it is possible to correctly determine whether or not the communication device 60 is carried by the same person by omitting information in a place where a situation where the communication device 60 is placed away from a person (for example, a place where a locker is installed) is omitted. be able to.

(4-6)
In the flow line acquisition system 100 according to the present embodiment, when the determination unit 35c determines that the first communication device 60 and the second communication device 60 are carried by different people, the first communication information And based on 2nd communication information, the 2nd judgment which judges whether the 1st communication device 60 and the 2nd communication device 60 are carried by the two persons who belong to the same group | seat who acts together is performed.

  Here, in addition to whether or not the two communication devices 60 are carried by the same person, it is determined whether or not the two communication devices 60 are carried by two persons belonging to the same group. It is possible to grasp the movements of other people.

Second Embodiment
A visitor number counting system 200 according to a second embodiment of the individual human detection system of the present invention will be described with reference to the drawings.

(1) Overall Configuration FIG. 8 is an overall schematic diagram of the visitor number counting system 200. The visitor number counting system 200 determines whether a plurality of communication devices 60 are carried by the same person or carried by different persons, and enters the space R in which the access point 20 is installed. It is a system that counts the number of

  In the visitor number counting system 200, the server 230 is different from the flow line acquisition system 100 in the first embodiment. Since the access point 20, the communication line 40, and the communication device 60 of the visitor number counting system 200 are the same as those in the first embodiment, description thereof is omitted.

(2) Detailed Configuration The server 230 in the visitor number counting system 200 of the second embodiment will be described below. However, since the server 230 has much in common with the server 30 in the flow line acquisition system 100 in the first embodiment mobile phone, differences from the server 30 will be mainly described.

(2-1) Server Like the server 30, the server 230 is a general-purpose computer.

  The server 230 stores information regarding radio waves received from the plurality of access points 20. Specifically, the server 230 stores the information regarding the radio waves of each communication device 60 received from the plurality of access points 20 as communication information regarding communication between the access point 20 and the communication device 60 at a plurality of points in time. .

  The server 230 makes a first determination and a second determination based on communication information related to communication between the access point 20 and the two communication devices 60. The first determination and the second determination are the same as in the first embodiment. The server 230 counts the number of people who entered the space R based on the determination result of the first determination. Moreover, the server 230 counts the number of persons who entered the space R as a group out of the number of persons who entered the space R based on the determination result of the second determination.

As shown in FIG. 9, the server 230 mainly includes a communication unit 31, an input unit 32, an output unit 233, a storage unit 234, and a control unit 235. Since the communication unit 31 and the input unit 32 are the same as the server 30 of the first embodiment, the description thereof is omitted.

(2-1-1) Output unit The output unit 233 is the first in that the number of visitors to the space R and the number of people who have entered the space R as a group are displayed instead of the human flow line information. It differs from the output unit 33 of the server 30 of the embodiment. Since the output unit 233 is the same as the output unit 33 in other points, description thereof is omitted.

(2-1-2) Storage Unit The storage unit 234 is different from the storage unit 34 of the server 30 according to the first embodiment in that the storage unit 234 does not include the person position information storage area 34h. Since the memory | storage part 234 is the same as that of the memory | storage part 34 about another point, description is abbreviate | omitted.

(2-1-3) Control Unit The control unit 235 is different from the control unit 35 of the server 30 of the first embodiment in that it does not have the human position determination unit 35d. Moreover, the control part 235 differs from the control part 35 of the server 30 of 1st Embodiment by the point which has the attendance number counting part 235e. Here, only the visitor number counting unit 235e, which is the main difference, will be described, and the other points are the same as those of the control unit 35, and thus description thereof will be omitted.

(2-1-3-1) Number of visitors counting unit The number of visitors counting unit 235e determines the number of visitors to the space R based on the result of the first determination stored in the determination result storage area 34g. .

  Specifically, the number of visitors counting unit 235e determines the number of visitors in the space R based on the number of communication devices 60 with which the access point 20 performs wireless communication and the result of the first determination. For example, when the determination result as shown in FIG. 7 is stored in the determination result storage area 34g, the number of visitors counting unit 235e includes six communication devices 60 with which the access point 20 performs wireless communication (communication device 60). 60A to 60F), it is determined that the communication device 60A and the communication device 60B are carried by the same person, so the number of visitors in the space R is determined to be five.

  Also, the visitor number counting unit 235e determines the number of visitors as a group that acts together with other people in the space R based on the result of the second determination stored in the determination result storage area 34g.

  For example, when the determination result as shown in FIG. 7 is stored in the determination result storage area 34g, the visitor number counting unit 235e has the communication device 60C and the communication device 60D carried by two persons belonging to the same organization. Therefore, the number of visitors is determined to be two as an organization for the space R.

  Also, the visitor number counting unit 235e determines the number of organizations that enter the space R and act together with other people based on the result of the second determination stored in the determination result storage area 34g. Also good.

(3) Counting process for the number of visitors The counting process for the number of visitors to the space R by the attendance number counting system 200 is performed in place of the process for determining the position of the person in step S11 in the flowchart of FIG. The number of people counting unit 235e is different in that it counts the number of visitors to the space R and the number of visitors to the space R as a group. The other points are the same as those in the flowchart of FIG.

(4) Features The visitor number counting system 200 according to the second embodiment also has the same features as the flow line acquisition system 100.

<Modification>
The modification of the said embodiment is shown below. A plurality of modified examples may be combined within a consistent range.

(1) Modification A
In the embodiment described above, the determination unit 35c of the server 30 and the server 230 determines the relationship between the carriers of the two communication devices 60 for each time zone based on the distance information regarding the distance between the two communication devices 60 for each time zone. Based on the determination result, a determination is finally made on the relationship between the carriers of the different communication devices 60, but the present invention is not limited to this.

  For example, the determination unit 35c determines the average distance between the two communication devices 60 over all time periods based on the distance information related to the distance between the two communication devices 60 for each time period stored in the distance information storage area 34c. May be calculated. Then, the determination unit 35c determines that different communication devices 60 are carried by the same person if the distance is equal to or less than a certain threshold, and different communication devices 60 are carried by different persons if the distance is greater than a certain threshold. It may be configured to determine that it has been. In this case, instead of the average distance, a median value of distances, a mode value of distances, or the like may be used.

(2) Modification B
In the embodiment described above, the determination unit 35c of the server 30 and the server 230 determines the relationship between the carriers of the two communication devices 60 for each time zone based on the distance information regarding the distance between the two communication devices 60 for each time zone. Based on the determination result, a determination is finally made on the relationship between the carriers of the different communication devices 60, but the present invention is not limited to this.

  For example, the determination unit 35c determines the similarity of the movement paths of the two communication devices 60 based on the position information of the two communication devices 60 according to time, and the movement paths of the two communication devices 60 match relatively well. If the two communication devices 60 are carried by the same person, and the movement paths of the two communication devices 60 are not similar, the two communication devices 60 are carried by different persons. One determination may be made. Further, the determination unit 35c determines the similarity of the movement paths of the two communication devices 60 based on the position information of the different communication devices 60 according to time, and the movement paths of the two communication devices 60 only partially match. In this case, the two communication devices 60 may be configured to perform the second determination that the two communication devices 60 are carried by two different persons who belong to the same group who act together.

(3) Modification C
In the above embodiment, the flow line acquisition system 100 and the visitor number counting system 200 are installed in a commercial facility, but are not limited thereto.

  For example, the flow line acquisition system 100 and the visitor number counting system 200 are installed in office buildings, hospitals, factories, warehouses, etc., and acquire the flow lines of people who act in the facilities or enter the facilities. Or a system that counts the number of persons. Moreover, the access point 20 does not need to be installed indoors, and may be installed outdoors.

(4) Modification D
In the above embodiment, the determination unit 35c of the server 30 and the server 230 performs the second determination in addition to the first determination, but is not limited thereto. For example, the determination unit 35c of the server 30 and the server 230 may perform only the first determination.

(5) Modification E
In the said embodiment, although one access point 20 is attached adjacent to each of the some indoor unit 50 of the air conditioner installed in the ceiling of the space R of a commercial facility, it is limited to this. is not. The access point 20 may be installed independently of the indoor unit 50. The access point 20 may not be installed on the ceiling, and may be attached to a wall of the space R or equipment installed in the space R.

  In the above embodiment, the air conditioning communication line is also used as the communication line 40. However, the present invention is not limited to this, and a wired or wireless communication line 40 different from the air conditioning communication line is used. Also good.

(6) Modification F
In the above embodiment, the server 30 and the server 230 are installed in a facility where the access point 20 is installed, but the present invention is not limited to this. For example, the server 30 and the server 230 may be installed in a place different from the facility where the access point 20 is installed. In addition, the server 30 and the server 230 may be devices that acquire human flow line information and count the number of visitors to the facility regarding a plurality of facilities where the access point 20 is installed.

(7) Modification G
In the above-described embodiment, the determination unit 35c of the server 30 and the server 230 includes the determination result of the most frequently determined carrier among the determination results of the relationship of the carrier by time zone for each combination of the two communication devices 60. It is determined that the relationship is the relationship between the carriers who have the highest number of appearances and the carrier who carries the two communication devices 60 included in the combination, but the relationship is not limited to this. For example, the determination unit 35c is included in the combination of the two communication devices 60 based on the appearance pattern of the relationship between the carriers in the determination result of the relationship between the carriers for each time zone. You may determine the relationship of the carrier who carries the two communication devices 60. FIG. For example, the determination unit 35c includes, in the combination, the relationship of the carrier that appears most continuously among the determination results of the relationship of the carrier for each time zone for each combination of the two communication devices 60. You may judge with the relationship of the carrier who carries the two communication devices 60. FIG.

(8) Modification H
In the above embodiment, the communication device 60 transmits radio waves at the same time interval, but is not limited to this. Each communication device 60 may be configured to transmit radio waves at a time interval unique to the communication device 60.

  The individual human detection system according to the present invention detects an individual person based on wireless communication between a radio and a communication device when the person carries an arbitrary number of one or more communication devices. Useful as a system.

20 Access point (radio device)
30, 230 Server 35c Determination unit 60 Communication device (first communication device, second communication device)
100 Flow line acquisition system (personal detection system)
200 Visitor Counting System (Personal Individual Detection System)

JP 2006-236146 A

Claims (6)

A plurality of wireless devices (20) that perform wireless communication with the first communication device (60) and the second communication device (60) carried by a person;
First communication information related to communication between the wireless device and the first communication device at a plurality of time points received from the wireless device, and second communication information related to communication between the wireless device and the second communication device at a plurality of time points, , Servers (30, 230) for storing
With
The server makes a first determination to determine whether the first communication device and the second communication device are carried by the same person or carried by different persons (35c). Have
The determination unit performs the first determination based on the first communication information and the second communication information.
Individual detection system (100, 200). The first communication information is time-series information regarding the position of the first communication device,
The second communication information is time-series information regarding the position of the second communication device.
The person individual detection system according to claim 1. The determination unit performs the first determination based on distance information about a distance between the first communication device and the second communication device obtained from the first communication information and the second communication information.
The person individual detection system according to claim 2. The determination unit weights information for the first communication information and the second communication information at a timing when it is estimated that both the first communication device and the second communication device are present at a predetermined location (X). Lower the first judgment,
The person individual detection system according to claim 2 or 3. The determination unit excludes information about the first communication information and the second communication information at a timing at which it is estimated that both the first communication device and the second communication device are present at a predetermined location (Y). And making the first determination,
The person individual detection system according to claim 2 or 3. When the determination unit determines that the first communication device and the second communication device are carried by different people, based on the first communication information and the second communication information, A second determination is further made to determine whether the communication device and the second communication device are carried by two persons belonging to the same group that act together;
The person individual detection system of any one of Claim 1 to 5.

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