JP2010021700A - Communication detection system, and communication detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quantitatively acquire the communication state of a plurality of human beings and to perform visible display. <P>SOLUTION: The communication detection system 1 has a plurality of mobile stations T1-T4 capable of moving in a prescribed movable area and base stations R1-R4 for transmitting and receiving information by wireless communication to/from the plurality of mobile stations T1-T4, and detects the communication state of a plurality of employees P1-P4 respectively carrying the plurality of mobile stations T1-T4. The respective positions of the plurality of mobile stations T1-T4 are detected on the basis of radio wave signals transmitted from the antenna 32 of the plurality of mobile stations T1-T4, a communication element relating to the employees P of the respective mobile stations T is recorded on the basis of the detected result, the communication activity degree of the respective employees P with each other is calculated on the basis of the recorded contents, and the corresponding communication state is displayed at a display part 24 on the basis of the calculated result. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication detection system and a communication detection apparatus that detect communication states of a plurality of persons to be detected.

For example, the behavior described in Patent Document 1 is known as a behavior prediction system that predicts the behavior of a target user. In this prior art, the mobile terminal device possessed by a person transmits a location registration signal by wireless communication at a predetermined timing, the base station outputs the received location registration signal to the server, and the server outputs the current location of the mobile terminal device. Calculate information. Based on the calculated current position information, the server forms the action pattern information of the user, and predicts the action of the current user.
JP 2000-293506 A

  For example, for an administrator of an organization consisting of multiple persons, what is the state of communication between the members of the organization (who and who have good communication, who and who have good communication) It is very important from the viewpoint of command chain, information transmission, labor management, and other various management viewpoints. For example, when an employee in a living room is talking to another employee and the manager is viewing it from his / her desk, the manager is generally active in communication between the two employees. It is common practice to assume that communication is relatively good on a daily basis.

  However, managers do not observe employees all day. For this reason, the two employees happened to have some conversation at that time, but in reality, there is a possibility that they are not usually talking. In this case, the manager says that the communication status of the two employees will be high daily because of the above visual impression, although the communication status of the two employees is not usually very high. It will have misunderstandings and preconceptions. On the other hand, even if other employees who happened to have no conversation at the time of visual recognition when the manager sat at the desk, the communication state may be high daily.

  Here, in the above prior art, the current position information of the person and the corresponding time information are stored as action history, and the action pattern information of the person is formed using the history, and behavior tendency analysis and action prediction are performed. It can be performed. However, no consideration is given to detecting the communication state between a plurality of persons as described above, and the communication state cannot be quantitatively detected or further visualized.

  An object of the present invention is to provide a communication detection system and a communication detection apparatus that can quantitatively acquire communication states of a plurality of persons and perform visualization display.

  In order to achieve the above object, the first invention comprises a storage unit for storing information and a first antenna means for transmitting / receiving information, and a plurality of mobile stations capable of moving in a predetermined movable region, A base station provided with a second antenna means for transmitting and receiving information to and from the mobile station by wireless communication, and detecting a communication state of a plurality of detected persons respectively possessing the plurality of mobile stations Position detecting means for detecting the position of each of the plurality of mobile stations based on radio signals transmitted from the first antenna means of the plurality of mobile stations and received by the second antenna means of the base station; Based on the detection result of the position detecting means, a communication element recording means for recording a communication element relating to the detected person of each mobile station, and Based on the recorded contents of the communication element recording means, the communication activity level calculating means for calculating the communication activity level between each detected person constituting the plurality of detected persons, and the communication activity level in the communication activity level calculating means Communication display means for displaying a corresponding communication state based on the calculation result.

  1st invention of this application detects the communication state in the to-be-detected person used as a detection target. Each detected person possesses a mobile station, and a radio signal from the first antenna means of the mobile station is received by the second antenna means of the base station. Based on the radio wave signal received by the second antenna means, the position detection means detects the position of each mobile station (in other words, each detected person; the same applies hereinafter).

  Based on the position detection result thus detected, the communication element of each detected person is recorded by the communication element recording means, and based on the recorded contents, the communication activity level calculating means indicates an index indicating the communication state between the detected persons. Calculate the communication activity level. Then, based on the communication activity calculated in this way, the communication display means displays the corresponding communication state.

  As described above, each detected person has a mobile station to detect a position, and a communication state is indexed and displayed as a communication activity level using a communication element based thereon. As a result, it is possible to quantitatively represent and acquire the communication status of a plurality of humans, which is usually difficult, and to visualize and display them for example to a plurality of human managers.

  According to a second invention, in the first invention, the communication element recording means records a position of each mobile station for each time as the communication element, and the communication activity calculating means relates to a plurality of the mobile stations. The communication activity level is calculated according to the length of time that the distance between the mobile stations is within a predetermined range based on the recorded contents of the communication element recording means.

  When humans communicate with each other, they are usually located at a distance that is relatively close to each other, and the proximity state continues during the conversation. Therefore, in the second invention of this application, the communication activity level calculating means calculates the communication activity level according to the length of time that the distance between the mobile stations is within a predetermined range. Thereby, it is possible to perform indexing in a form that accurately reflects the state of conversation.

  In a third aspect based on the second aspect, the mobile station detects a conversation state of the corresponding detected person based on a sound detection means for detecting surrounding sound and a detection result of the sound detection means. Conversation activity detection means, the communication activity level calculation means, based on the recorded contents of the communication element recording means related to a plurality of mobile stations, whether the distance between the mobile stations is within a predetermined range, The communication activity level is calculated in accordance with a detection result of the conversation detection means regarding the mobile stations.

  The mobile station is provided with voice detection means such as a microphone to detect voice, and the conversation detection means detects the conversation state based on the detection result. In this way, the mobile station side directly detects the conversation state, and the communication activity level calculation means calculates the communication activity level in consideration of the detection result. Thereby, it is possible to perform indexing in a form that more reliably reflects the state of conversation.

  A fourth invention is the above-mentioned third invention, wherein the conversation detection means of the mobile station is based on a detection result of the voice detection means and determines whether or not the detected person is talking. A conversation signal transmitting means for generating a corresponding conversation signal and transmitting to the base station via the first antenna means when the conversation determination means determines that the detected person is talking. The communication element recording means records, as the communication element, the position of each mobile station and the presence / absence of the conversation signal for each time, and the communication activity calculation means is provided to a plurality of the mobile stations. Based on the recorded contents of the communication element recording means, whether the distance between the mobile stations is within a predetermined range, and the conversation signal of the mobile stations exists. Depending on the how, and calculates the communication activity level.

  In the fourth invention of the present application, it is determined whether the conversation determination means is conversation or non-conversation based on the detection result continuously detected by the voice detection means as, for example, the voice level. Is converted into a corresponding signal (conversation signal) and transmitted to the base station. By making such a signal, the communication element recording means can reliably record for each time in the form of the presence / absence of the conversation signal, and the communication activity level calculation means takes into account the presence / absence of the conversation signal. The operation can be performed with. That is, by converting the voice detection result into the presence / absence of conversation, the indexing can be easily and reliably incorporated into the calculation content.

  According to a fifth invention, in any one of the second to fourth inventions, the communication activity level is calculated by the communication activity level calculation unit based on the map information of the movable area and the position detection result by the position detection unit. It has the 1st correction | amendment means which correct | amends the said communication activity according to which area | region of the said movable area | region where the said to-be-detected persons calculated exist.

  When a conversation is performed between a plurality of people, a place where the conversation is performed may have a certain correlation with the density of the conversation or the content of the conversation. For example, if you are sitting at a desk, it is a story about work, if it is a break room, it is a chat, and if it is a conference room, it is highly likely that it is a meeting. Therefore, in the fifth invention of the present application, after the communication activity level calculation means calculates the communication activity level, the first correction means corrects the communication activity level according to which region the corresponding detected persons are in. As a result, more detailed indexing can be performed corresponding to the difference in the nature of the conversation depending on the place as described above, and convenience is improved.

  A sixth invention is the communication activity level according to any one of the second to fourth inventions, based on map information including arrangement information of a predetermined part in the movable area and a position detection result by the position detecting means. It has the 2nd correction means which corrects the communication activity according to whether the detected persons whose communication activity was calculated by calculation means exist in the vicinity of the equipment.

  When a conversation is performed between a plurality of people, depending on the type of equipment, the conversation near the equipment may have a certain correlation with the density of the conversation or the content of the conversation. For example, if it is close to a desk, it is a talk about work, if it is close to a sofa, it is a chat, and if it is close to a white board or a projector, it is highly likely that it is a meeting. Therefore, in the sixth invention of the present application, after the communication activity level calculation means calculates the communication activity level, the second correction means corrects the communication activity level according to which equipment the corresponding detected persons are close to. To do. Thereby, in response to the difference in the nature of conversation based on the type of equipment as described above, more detailed indexing can be performed, and convenience is improved.

  According to a seventh invention, in the fifth or sixth invention, the correction means is configured such that the detected persons are present in a predetermined area of the movable area or in the vicinity of the equipment. If it exists, the correction is performed by multiplying the corresponding communication activity by a corresponding weighting factor.

  Thereby, the difference in the nature of the conversation based on the location and the type of equipment can be quantified and characterized by the difference in the value of the weighting factor, and can be reliably indexed.

  According to an eighth invention, in any one of the second to seventh inventions, the communication display means displays a communication display between the detected persons having a high communication activity calculated by the communication activity calculation means. The communication state is displayed in such a manner as to be more emphasized than the communication display between the detected persons.

  Thereby, in a communication state in which a plurality of persons to be detected can exist, a relationship (intercourse) in which communication is particularly active can be made visually more prominent than other relationships. As a result, for example, the administrator can clearly recognize such a state.

  A ninth invention is the display according to the eighth invention, wherein the communication display means displays the specific detected person as a reference according to the level of communication activity between the detected person and each of the plurality of other detected persons. In an aspect, the communication state is displayed.

  Thereby, for example, it is possible to make the administrator recognize the communication relationship based on a specific person in an easy-to-understand manner.

  In order to achieve the above object, a tenth aspect of the present invention is a communication detection apparatus for detecting a communication state by a plurality of detected persons, wherein the communication elements related to the detected persons are based on the positions of the detected persons. A communication element recording means for recording, a communication activity level calculating means for calculating a communication activity level between each detected person constituting the plurality of detected persons based on the recorded contents of the communication element recording means, and the communication Communication display means for displaying a corresponding communication state based on the calculation result of the communication activity level by the activity level calculation means.

  In the communication detection apparatus according to the tenth invention of the present application, the communication elements of each detected person are recorded by the communication element recording means based on the positions of the plurality of detected persons to be detected, and the communication activity level is determined based on the recorded contents. The calculating means calculates a communication activity level that serves as an index representing a communication state between the detected persons. Then, based on the communication activity calculated in this way, the communication display means displays the corresponding communication state.

  As described above, the communication state is indexed and displayed as the communication activity level using the communication element based on the position of each detected person. As a result, it is possible to quantitatively represent and acquire the communication status of a plurality of humans, which is usually difficult, and to visualize and display them for example to a plurality of human managers.

  According to the present invention, it is possible to quantitatively acquire communication states of a plurality of persons and perform visualization display.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(A) System Basic Configuration FIG. 1 is an explanatory diagram schematically showing the overall configuration of an embodiment of the communication detection system 1 of the present invention.

  In FIG. 1, this example shows a case where the communication detection system 1 of the present embodiment is applied to one entire floor of a building (in this example, a building of a predetermined company). The floor includes an experimental room Z1, a living room Z2, a toilet Z3, a meeting space M, and a plurality of rooms Z1 to Z3 and M (hereinafter, including the meeting space M, as described above, “rooms Z1 to Z3 And a corridor B communicating with each other (referred to as “M”), which serve as positioning possible areas (predetermined movable areas).

  The living room Z2 has one desk DK1 (for manager K described later) and four desks DK2 (for employee P described later), one chair CH1 (for manager K) and four chairs CH2 (for employee P). And are provided. In this example, the meeting space M is divided into two areas Ma and Mb through a wall WA. Each region Ma, Mb is provided with one table TT, four chairs CH3, and one whiteboard WB.

  The communication detection system 1 according to the present embodiment has a plurality of employees (four in the illustrated example) that are owned by employees P1, P2, P3, and P4 (detected persons) (or are provided on personal belongings). Mobile stations T1, T2, T3, and T4 (which may be associated with each other), a plurality of (four in the illustrated example) base stations R1, R2, R3, and R4 installed in the floor, and the room Z2 And a management server S (communication detection device) connected to each of the base stations R1 to R4 via the communication network NW.

  Each of the base stations R1, R2, R3, and R4 is installed on, for example, a wall surface of the floor, and cooperates with the entire area in the floor as a communication range. Then, mobile stations T1, T2, T3, and T4 that move together with employees P1, P2, P3, and P4 (hereinafter collectively referred to as “employee P” as appropriate) (hereinafter referred to as “mobile station T” as appropriate). The position of the employee P in the floor can be detected by the management server S based on the result of information transmission / reception via wireless communication (details will be described later).

  The management server S stores map information on the floor. The management server S monitors the location in the floor of the mobile station T (that is, the location of the employee P) based on the distance to the mobile station T detected by each of the base stations R1 to R4 (details will be described later). To do). For example, a plane coordinate system is set on the floor, and the coordinate area occupied by the floor, the installation positions of the base stations R1 to R4, the arrangement positions and the occupation areas of the desks DK1 and DK2, and the chairs CH1 and CH2 are previously set. , CH3 arrangement position and occupation area, each table TT arrangement position and occupation area, wall WA arrangement position and occupation area, each whiteboard WB arrangement position and occupation area are managed as map information as shown in FIG. Stored in the server S.

  In addition, the management server S detects the location in the floor of the mobile station T (that is, the location of the employee P) based on the distance to the mobile station T detected by each of the base stations R1 to R4. Also, the management server S calculates the distance from the mobile station T related to a certain employee P to the mobile station T related to another employee P in accordance with the detection result of the location of the employee P and the map information. Based on the distance, the communication activity between the employees is calculated (details will be described later).

  FIG. 2 is a functional block diagram showing a functional configuration of the communication detection system 1 of the present embodiment.

  In FIG. 2, the communication detection system 1 includes, as described above, the mobile stations T1 to T4 possessed by the employees P1 to P4, the base stations R1 to R4 that perform radio communication with the mobile stations T, and these base stations. The management server S is connected to the stations R1 to R4 via an appropriate communication network NW.

  For example, when the manager K (operator in charge of management, in this example, the managers of the employees P1 to P4) operates the management server S, a control signal is transmitted from the management server S to each of the base stations R1 to R4 via the communication network NW. And a signal including the position detection result of each mobile station T is output to the management server S.

  Base stations R1 to R4 (hereinafter simply referred to as “base station R” when referring to a single unit) have a main body 11 and an antenna 12 (second antenna means).

  The main body unit 11 includes a radio unit 16, an RSSI unit 17, a network communication control unit 18, a clock unit 19 </ b> A, an arrival time detection unit 19, and a control unit 20.

  The wireless unit 16 implements a so-called wireless communication function, and transmits and receives radio waves using the antenna 12. The radio unit 16 transmits a radio wave including a command for controlling the operation of the mobile station T. In addition, the radio unit 16 receives radio waves transmitted from the mobile station T, and outputs the contents to an arrival time detection unit 19 (to be described later) as necessary to execute processing. That is, the radio unit 16 generates an oscillator that generates a carrier wave having a predetermined frequency, modulates the carrier wave based on a signal transmitted by radio waves, performs a modulator that performs digital modulation, and outputs the modulated carrier wave to a predetermined output. A receiving amplifier that amplifies a received wave received by the antenna 12, a filter that extracts only a predetermined frequency component from the received wave, a demodulator that performs demodulation by digital demodulation, a detector, or the like It is realized by. At this time, since the wireless communication performed by the wireless unit 16 is preferably used, for example, so-called digital communication, the wireless unit 16 includes a mechanism for modulation or demodulation necessary for the digital communication.

  As described above, the antenna 12 is used when the wireless unit 16 transmits and receives radio waves. An omnidirectional antenna is preferably used as the antenna 12 so that radio waves can be received well regardless of the position of the mobile station T.

  The arrival time detector 19 calculates a correlation value between the spreading code included in the radio wave transmitted from the mobile station T and the replica code of the spreading code. Specifically, the arrival time detection unit 19 has the same replica code as the spreading code transmitted from the mobile station T in advance, and the spread code extracted from the received radio wave from the mobile station T. By inputting the code (reception code) to the matched filter, the correlation value between them can be obtained. The time indicating the peak of the correlation value is the radio wave reception time. Accordingly, the reception time is detected by obtaining the time indicating the peak of the correlation value from a clock 19A described later.

  The RSSI unit 17 detects the signal strength of the received signal.

  The network communication control unit 18 controls transmission / reception of control signals and information signals with the management server S via the communication network NW. The clock unit 19A has a function of outputting the current time (time information). Each base station R1 to R4 has its own clock, and these times are synchronized in advance by performing communication between base stations. In the present embodiment, a wired network using a cable or the like is assumed for the communication network NW. However, the present invention is not limited to this, and a wireless network may be used.

  The control unit 20 controls the operation of the entire base station R including the radio unit 16, the RSSI unit 17, the network communication control unit 18, the arrival time detection unit 19, and the clock unit 19A. That is, the control unit 20 performs signal processing according to a program stored in advance in the ROM while using the temporary storage function of the RAM. Specifically, the control unit 20 receives an input of an execution command for position detection processing from the management server S, and transmits a transmission command to the mobile station T and a transmission signal from the mobile station T by wireless communication via the antenna 12. The detection result is output to the management server S via the communication network NW.

  Further, as shown in FIG. 3, the mobile stations T1 to T4 are possessed or attached by the corresponding employee P as described above by an appropriate method such as putting in a pocket in the form of a card or hanging from the neck. Has been. The mobile station T includes an IC circuit unit 31 (storage unit) and an antenna 32 (first antenna means) (the clock unit 35 will be described later).

  The IC circuit unit 31 includes a radio unit 33 that realizes radio functions such as modulation, demodulation, and amplification for transmitting and receiving radio signals, and a control unit 34 that controls the operation of the entire mobile station T including the radio unit 33. Have.

  The radio unit 33 generates a carrier wave of a predetermined frequency, modulates the carrier wave based on a signal transmitted by radio waves, a modulator that performs digital modulation, and amplifies the modulated carrier wave to a predetermined output It has a transmission amplifier. Further, the radio unit 33 is realized by a reception amplifier that amplifies the reception wave received by the antenna 32, a filter that extracts only a predetermined frequency component from the reception wave, a demodulator that performs demodulation by digital demodulation, a detector, or the like. Includes reception function. At this time, for example, so-called digital communication is preferably used as the wireless communication performed by the wireless unit 33. Therefore, the wireless unit 33 includes a mechanism for modulation or demodulation necessary for the digital communication.

  The control unit 34 performs transmission / reception switching, carrier frequency setting, and output setting in the transmission amplifier for the radio unit 33. Further, the command relating to the control operation of the mobile station T is analyzed from the contents of radio waves from the base stations R1 to R4 demodulated by the radio unit 33. The control unit 34 generates a spreading code transmitted by the mobile station T by radio waves by reading a spreading code stored from a storage unit (not shown) or based on a predetermined generation method, for example, a predetermined primitive polynomial. To decide.

  Note that the mobile station T used in this example is an active tag that is driven by a power supply (not shown in particular) provided therein. As a result, the mobile station T can transmit radio waves by itself and can communicate with a base station at a distance.

  The management server S also includes a CPU (Central Processing Unit) 21, a memory 22, an operation unit 23, a display unit 24 (communication display means), a mass storage device 25, and a network communication control unit 26. ing.

  The memory 22 is composed of, for example, a RAM or a ROM. Instructions and information from the administrator K are input to the operation unit 23. Various information and messages are displayed on the display unit 24. The large-capacity storage device 25 is composed of a hard disk device and functions as a database for storing various types of information related to floor map information, employee P, and the like (details will be described later). The network communication control unit 26 controls transmission / reception of signals to the base stations R1 to R4 via the communication network NW.

  In the above, the biggest feature of this embodiment is that the communication state between employees (whether or not they are talking or whether or not the conversation is active) according to the detection position of the mobile station T related to each employee P. )), And the detection result is quantitatively visualized and displayed. Hereinafter, the details will be sequentially described.

(B) Method Principle of Mobile Station Position Detection FIG. 4 is a diagram for explaining the principle of a method for detecting the position of the mobile station T in the communication detection system 1 of the present embodiment. 4 shows an example in which the position of one mobile station T is detected by three base stations R1 to R3 in order to avoid the complexity of illustration.

  In FIG. 4, the mobile station T possessed by the employee P can move to any coordinate position within the floor where the plane coordinate system is set as described above, whereas the three base stations R1 to R3 are within the same floor. Are fixedly arranged at known installation positions. Each base station R1 to R3 is connected to one management server S through a communication network NW so as to be able to send and receive information.

  In this configuration, the management server S measures and detects the distances from the base stations R1 to R3 to the mobile station T based on the reception time difference of the radio signal from the mobile station T at the base stations R1 to R3. That is, at least one of the base stations R1 to R3 transmits a predetermined transmission request signal to the mobile station T, and the mobile station T correspondingly transmits a radio signal (distance detection radio signal) to each of the base stations R1 to R1. Transmit to R3. At this time, the time (arrival time) from when the mobile station T transmits the radio signal for distance detection until it is received at the base station R is proportional to the spatial distance between the base station R and the mobile station T. . When the distance from each base station R to the mobile station T is different, the arrival time is different depending on each base station R, and a time difference occurs. The management server S can calculate the position of the mobile station T based on the time difference.

  The coordinates of the base stations R1, R2, and R3 are (x1, y1), (x2, y2), and (x3, y3), respectively. In each of the first base station R1, the second base station R2, and the third base station R3, the reception times when the distance detection radio signals transmitted from the mobile station T at the time T0 are received are T1, T2, and T3. To do.

Under the above conditions, in FIG.
c × (T1−T0) = √ {(x−x1) ² + (y−y1) ² } (1A)
c × (T2−T0) = √ {(x−x2) ² + (y−y2) ² } (1B)
c × (T3−T0) = √ {(x−x3) ² + (y−y3) ² } (1C)
Holds.

Then, by subtracting equation (1B) from equation (1A),
√ {(x−x1) ² + (y−y1) ² } −√ {(x−x2) ² + (y−y2) ² } = c × (T1−T2) (1D)
Moreover, by subtracting the formula (1C) from the formula (1A),
√ {(x−x1) ² + (y−y1) ² } −√ {(x−x3) ² + (y−y3) ² } = c × (T1−T3) (1E)
The relationship expressed by In addition, c is a radio wave speed (light speed: about 3.0 × 10 ⁸ [m / s]).

  At this time (the reception times T1, T2, and T3 are known as measured values), there are only two variables x and y. Therefore, the above two equations (1D) and (1E) are expressed by, for example, the Newton-Raphson method. By solving, the x and y coordinates (x, y) of the position of the mobile station T can be specified. In addition, by providing four base stations R1 to R4 as in the present embodiment, more accurate position detection can be performed.

  In the above example, each base station R1 to R3 only detects the reception time of the radio signal and transmits it to the management server S, and positioning processing (calculation of the distance from the base stations R1 to R3 to the mobile station T). Is performed by the management server S, but is not limited thereto. That is, one control unit 20 among the base stations R1 to R3 may collect other reception time information and perform positioning.

(C) Communication between employees (in this example) What is the daily communication status of subordinate employees P1, P2, P3, and P4 for manager K who is a supervisor (who communicates with whom) It is very important to know who and who is not in good communication with each other from the viewpoint of command system, information transmission, labor management, and various other management. .

  For example, as shown in FIG. 5, when the employee P1, the employee P2, and the employee P3 are having a conversation in the living room Z2, and the manager K is viewing it, the manager K is assigned to the employees P1, P2, and P3. In general, there is active communication between the two, and it is common to assume that communication is relatively good on a daily basis.

  However, the manager K does not observe the employees P1 to P3 all day. For this reason, the employees P1 to P3 happen to have some conversation at that time shown in FIG. 5, but there may be a possibility that the conversation is not usually performed. In this case, the administrator K actually misunderstands that the communication status of the employees P1 to P3 will be high from the daily impression, although the communication status of the employees P1 to P3 is not usually very high. Will have a preconception. On the other hand, even if the employees P who happened to have no conversation at the time of visual recognition when the manager K sat down at the desk DK1, the communication state may be high daily.

  In addition, the manager K cannot easily recognize the conversation in the room Z2 where the manager K cannot see from the desk DK1, or the conversation in another room outside the room Z2 or the corridor B. . In addition, in order to know the accurate communication state between the employees P, it is not unimaginable to monitor all rooms of the company with a video camera or to confirm the conversation history of each employee P by voice recording. . However, such a method takes a lot of time and is not realistic considering the possibility of infringing on the privacy of each employee P.

  As described above, it is very difficult for the manager K to accurately grasp the communication state between the employees P.

(D) Communication state detection (D-1) Map information database

  Next, the details of the map information will be described. As conceptually shown in FIG. 6, the map information is a coordinate area occupied by each room (laboratory Z1, living room Z2, toilet Z3, meeting space M, corridor B) in the plane coordinate system, and each base station R1 to R1. This includes the installation position of R4 and the like, and is composed of a room database described below.

  FIG. 7 is a diagram showing the main part of the room database including the relationship between the name, ID, and x-coordinate y-coordinate range of each room stored in the large-capacity storage device 25 of the management server S. In FIG. 7, the coordinate range of the meeting space M is the range where the x coordinate is Xca <x <Xcb and the y coordinate is Ycb <y <Ycc, and the coordinate range of the laboratory Z1 is that the x coordinate is 0 <x <Xca and y. The coordinate range is Ycb <y <Ycc, the coordinate range of the living room Z2 is the range of x coordinate Xca <x <Xcb and the y coordinate is 0 <y <Yca, and the coordinate range of the toilet Z3 is x coordinate 0 <X <Xca and the y coordinate are in the range of 0 <y <Yca, and the corridor B has a coordinate range in which the x coordinate is 0 <x <Xcb and the y coordinate is in the range of Yca <y <Ycb. Therefore, by comparing the detected coordinates of the mobile station T with the coordinate range data of each room described above, where the mobile station T is in the laboratory Z1, the room Z2, the toilet Z3, the meeting space M, and the hallway B. Can be determined.

  FIG. 8 is a diagram illustrating a room database related to the room Z2 constituting an example of a detailed portion of the room database stored in the mass storage device 25 of the management server S. As shown in FIG. 8, this room database is similar to FIG. 7, and shows the relationship between the names, IDs, and x-coordinates / y-coordinates of the equipment in the room (in this example, the desks of each employee P and manager K). Contains. FIG. 9 is a diagram conceptually showing the contents, and corresponds to FIG. 8 and 9, the coordinate range of employee P1's desk and DK2-P1 is the range where x coordinate is 14 <x <16 and y coordinate is 2.5 <y <4. The coordinate range of P2 is the range where the x coordinate is 16 <x <18 and the y coordinate is 2.5 <y <4. The coordinate range of the desk of the employee P3 and DK2-P3 is that the x coordinate is 14 <x <16 and The y coordinate is in the range of 1 <y <2.5 <, and the coordinate range of employee P4's desk and DK2-P4 is in the range of x coordinate of 16 <x <18 and y coordinate of 1 <y <2.5. is there.

(D-2) Conversation Detection A method for detecting the communication status of the employee P1 to the employee P4 described above will be described with reference to FIGS. Communication is communication (will communication) of each other's intentions, feelings, thoughts, etc., and is generally performed by conversation as a means. Therefore, normally, the two who talk are present in relatively close positions. Therefore, in the present embodiment, when the positions of the plurality of employees P are within a predetermined proximity range (same coordinates in this example), it is considered that the plurality of employees P are having a conversation with each other ( Conversation detection). For this purpose, the management server S detects the positions of the mobile stations T1, T2, T3, T4 detected by the positioning process (in other words, the positions of the employees P1, P2, P3, P4) at predetermined intervals, The data is stored in the mass storage device 25 as a database (employee location database).

  FIG. 10 is a diagram showing the employee position database. In FIG. 10, in this employee position database, the positions (x coordinate, y coordinate; communication element) of mobile stations T1, T2, T3, T4 at each detection time at a predetermined interval (1 second interval in this example) are stored. ing. The management server S can acquire the location history of the mobile stations T1 to T4 from this database.

  In the example shown in FIG. 10, the mobile station T1 (in other words, employee P1) has the employee P1 in the room Z2 for 30 seconds from 11:23:45 to 11:24:15 for XX year. It is located at coordinates (15, 4), which is the position of the seat (see FIG. 9).

  The mobile station T2 (in other words, the employee P2) is the position of the seat of the employee P2 (see FIG. 9) for 3 seconds from XX year Δmonth × day 11:23:45 to 11:23:48. It is located at the coordinates (17, 4). After that, it moves and is located at the coordinates (15, 4), which is the seat position of the employee P1, for 10 seconds from 11:23:50 to 11:24:00. After that, it moves further and is positioned at coordinates (17, 1) which is the position of the seat of the employee P4 (see FIG. 9) for 8 seconds from 11:24:07 to 11:24:15.

  The mobile station T3 (in other words, employee P3) is the position of the seat of employee P3 (see FIG. 9) for 24 seconds from XX year △ month × day 11:23:45 to 11:24:09. It is located at the coordinates (15, 1). After that, it moves and is located at the coordinates (17, 1), which is the position of the seat of the employee P4, for 4 seconds from 11:24:11 to 11:24:15.

  The mobile station T4 (in other words, employee P4) has the above coordinates (17, 1) that is the position of the seat of employee P4 for 30 seconds from XX year △ month × day 11:23:45 to 11:24:15. ).

  As described above, the following communication state can be detected in a section of 30 years from XX year Δ month × day 11:23:45 to 11:24:15. That is, for 3 seconds from 11:23:45 to 11:23:48, employee P1, employee P2, employee P3, and employee P4 are located in their seats and no one is talking to each other. (The state shown in FIG. 9 described above). Then, due to the movement of the employee P2, the employee P1 and the employee P2 are positioned at the seat of the employee P1 (coordinates (15, 4)) for 10 seconds from 11:23:50 to 11:24:00. It becomes a conversation state with two people (see FIG. 11). Further, due to the movement of the employee P2, the employee P2 and the employee P4 are positioned at the seat of the employee P4 (coordinates (17, 1)) for 3 seconds from 11:24:07 to 11:24:10. It becomes a conversation state with two people (see FIG. 12). Thereafter, due to the movement of the employee P3, the employee P2, the employee P3, and the employee P4 are placed in the seat of the employee P4 (coordinates (17, 1)) for 4 seconds from 11:24:11 to 11:24:15. It is located and it becomes a conversation state with these three persons (refer FIG. 13). As a result of the above, when viewed by the employee P2 and the employee P4, the conversation state is established for 8 seconds from 11:24:07 to 11:24:15.

(D-3) Quantification of communication state based on communication activity level In this embodiment, in order to quantify the degree of communication of a communication (conversation) state detected by the above-described method as a numerical value, Define and use degrees. This communication activity level is a time range in which a plurality of mobile stations T are located at the same coordinates in a predetermined time range (section) when the position of each mobile station T is detected every moment as described above. (Accumulated value in seconds in this example).

  FIG. 14 shows a calculation example of the communication activity level in the example shown in FIG. 10 (that is, a period of 30 seconds from XX year Δ month × day 11:23:45 to 11:24:15). It is a figure showing a communication active degree.

  In FIG. 14, since employee P1 and employee P2 are in conversation for 10 seconds from 11:23:50 to 11:24:00, as described above, employee P1 and employee P1 and employee in the 30-second section are shown. Communication activity with P2 is 10. Similarly, since the employee P2 and the employee P3 are in a conversation state for 4 seconds from 11:24:11 to 11:24:15, the communication activity level is 4. Further, since the employee P2 and the employee P4 are in a conversation state for 8 seconds from 11:24:07 to 11:24:15, the communication activity level is 8. Further, since the employee P3 and the employee P4 are in a conversation state for 4 seconds from 11:24:11 to 11:24:15, the communication activity level is 4.

  Other than the above, that is, the combination of employee P1 and employee P3 and the combination of employee P1 and employee P4 are not in a conversation state in the 30-second section. Becomes 0.

(D-4) Visualization of communication state In the present embodiment, for example, the display unit 24 of the management server S is used by using the communication activity level in the predetermined time range (section) calculated as described in (D-3) above. In, the visualization of the communication status is performed. The details will be described below with reference to FIGS.

  As an example of visualization, focusing on a specific employee P (employee P1 in the following example), visualization according to the value of communication activity with other employees P2, P3, and P4 based on the employee P1 Do. FIG. 15A shows an example of communication activity in another time range (for example, 1 hour, ie, 3600 seconds) calculated by the method described above in (D-3). The communication activity level with each of the other employees P2, P3 and P4 is shown.

  As shown in FIG. 15 (a), in this example, the communication activity level between the employee P1 and the employee P2 in the above section is 250 (the total of conversation time is 250 seconds). Similarly, the communication activity level between the employee P1 and the employee P3 is 200 (the total time spent in conversation is 200 seconds), and the communication activity level between the employee P1 and the employee P4 is 150 (time spent in the conversation). Is a total of 150 seconds).

  Next, the minimum value of the three communication activity levels (150 in the above example) is divided by each of the three communication activity levels to make it dimensionless. FIG. 15B shows an example of this dimensionless value. The combination of employee P1 and employee P2 is 0.6 (= 150/250), and the combination of employee P1 and employee P3 is 0.75 (= 150/200), and 1.0 (= 150/150) for the combination of employee P1 and employee P4. As a result, the higher the communication activity level (= the better the communication), the smaller the dimensionless value, and the lower the communication activity level (= the worse the communication), the greater the dimensionless value. Become.

  Finally, the communication state between the employee P1 and the employees P2, P3, and P4 is visualized by drawing a concentric circle with the value made dimensionless as described above as a radius. FIG. 16 shows an example of drawing with such a concentric circle, and an image of the employee P1 is displayed at the center of the concentric circle. Then, in accordance with the above dimensionless value, the icon of the employee P2 is displayed on a circle with a radius of 0.6r from the center, the icon of the employee P3 is displayed on a circle with a radius of 0.75r, and the employee P4's image is displayed. The image is displayed on a circle with a radius r. As a result, the partner with whom employee P1 can communicate most actively is employee P2 (displayed with emphasis over the others because of the closest distance), and the partner with whom employee P1 does not communicate much (the most distant) The manager K can easily understand sensuously that the employee P4 (displayed far away) and the middle of the employee P4 is the employee P3.

  In the above example, the communication activity level is visualized and displayed by drawing a concentric circle having a radius that is made dimensionless by the above-described method. However, the present invention is not limited to this. That is, for example, the images of each employee P are arranged at regular intervals and connected to each other by a straight line, and the straight line between the employees P having a high communication activity level is thicker than the others according to the communication activity level. Or may be emphasized so that the color stands out (not shown).

(E) Control Sequence FIG. 17 is a sequence diagram illustrating an example of transmission and reception of various signals and control operations between the management server S, the base stations R1 to R4, and the mobile stations T1 to T4 in the present embodiment. . In FIG. 17, each procedure is basically represented by a time series change from the upper side to the lower side in the drawing. As described above, signals are sent and received between the management server S and the base stations R1 to R4 via the communication network NW. In addition, signals are transmitted and received between the base stations R1 to R4 and the mobile stations T1 to T4 via wireless communication.

  First, in step SS10, the CPU 21 of the management server S sends the mobile stations T1 to T4 to the base stations R1 to R4 (or one specific base station R) via the network communication control unit 26. An instruction signal is output so as to transmit a radio wave transmission request for distance detection. Thus, in step SR10, the radio unit 16 of each base station R1 to R4 (or one specific base station R) transmits a radio wave transmission request signal to the mobile stations T1 to T4 via the antenna 12.

  And the radio | wireless part 33 of the mobile station T which received this transmission request signal transmits the radio | wireless signal for a corresponding distance detection via the antenna 32 in step ST10. The radio unit 16 of each of the base stations R1 to R4 receives each distance detection radio signal via the antenna 12 in step SR20. Then, the arrival time detection unit 19 detects the reception time information at that time, and the control unit 20 outputs the reception time information to the management server S via the network communication control unit 18.

  Then, in step SS20, the CPU 21 of the management server S determines the position coordinates of the mobile stations T1 to T4 based on the difference in reception time (= difference in arrival time) input from the base stations R1 to R4 with reference to FIG. Calculation is performed by the above-described method (position detecting means).

  In step SS10, the instruction signal is constantly output at a predetermined time interval (for example, at intervals of one second) so as to transmit a radio wave transmission request for distance detection from the management server S to the mobile station T to the base station R. . As a result, the position detection of the mobile station T is always performed in real time. Moreover, although the distance detection radio signal from the mobile station T is transmitted in response to the transmission request from such base stations R1 to R4 (or a specific base station R), the present invention is not limited to this. That is, the mobile station T continues to transmit radio signals spontaneously at regular time intervals, and each base station R receives the radio signals continuously transmitted, and based on this, the management server S performs distance detection. Good. Also in this case, the position detection of the mobile station T is always performed in real time.

  Next, in step SS30, the CPU 21 of the management server S stores the position coordinates and position detection time of each mobile station T as a communication element calculated in step SS20 in the mass storage device 25 of the management server S. Write in the above-mentioned employee location database (communication element recording means), update the location history of each mobile station T, and proceed to step SS40.

  In step SS40, the CPU 21 of the management server S determines whether or not the administrator K described above has received an instruction input for calculating the communication activity described above. This determination may be made by, for example, inputting an instruction for calculating the communication activity level using the operation unit 23 of the management server S (for example, a program created to start calculating the communication activity level when a certain program is started). It may be determined whether or not there has been activation. If the administrator K has not input an instruction for calculating the communication activity level, the determination is not satisfied, and the process returns to step SS10 and the same procedure is repeated. The determination is satisfied, and the routine goes to Step SS50.

  In step SS50, the CPU 21 of the management server S generates a display signal and outputs it to the display unit 24 of the management server S, and calculates various calculation / display conditions for calculating and displaying the communication activity level, that is, the calculation. Time range (for example, XX year △ month × day 9 o'clock to XX year △ month × day 17:00), target employee P (for example, limited to between employee P1 and employee P4), and reference when displaying A predetermined display (not shown) that prompts the administrator K to input an instruction such as employee P (see FIG. 16 above, for example, display based on employee P1) is performed. At this time, it is also possible to prompt the instruction input of the floor to be calculated (for example, only in the living room Z2). Further, the administrator K may be selectively input from preset items.

  Then, the process proceeds to step SS60, and in response to the display in step SS50, it is determined whether or not the calculation / display conditions are input by the administrator K via the operation unit 23. The determination is not satisfied until the administrator K inputs the calculation / display condition, and the process returns to step SS50 and the same procedure is repeated. If the calculation / display condition is input, the determination is satisfied and the process proceeds to step SS70.

  In step SS70, according to the condition (calculation condition) input by the administrator K in step SS60, the CPU 21 of the management server S determines the position of each mobile station T (in other words, each employee P) updated in step SS30. Based on the history database, the communication activity level is calculated by the above-described calculation method (communication activity level calculation means).

  Then, in step SS80, the CPU 21 of the management server S generates a display signal according to the condition (display condition) input by the administrator K in step SS60 and outputs it to the display unit 24 of the management server S. The calculated communication activity level is visualized and displayed on the display unit 24 (see FIG. 16 described above). After step SS80 is completed, the management server S returns to step SS10 and repeats the same procedure.

  As described above, in the communication detection system 1 of the present embodiment, when a radio signal for distance detection is transmitted from each mobile station T, the radio signal is received by the radio unit 16 of each base station R. The reception time of the radio signal at this time is detected by the arrival time detector 19. Thereby, the management server S detects the position of each mobile station in real time based on the reception time difference of each base station R (step SS20). Based on the position detection result, the management server S updates the position history of each mobile station T related to each employee P (step SS30), and further becomes an index representing the communication state between the employees P based on the position history. A communication activity level is calculated (step SS70). Then, based on the communication activity calculated in this way, the display unit 24 performs visualization display of the corresponding communication state (step SS80).

  As described above, each employee P has the mobile station T to detect the position, and the communication status between the employees P is indexed and displayed as the communication activity level according to the position detection result. As a result, the communication state between the employees P, which is normally difficult, can be quantitatively represented and acquired on the server S side, and can be visualized and displayed to the manager K. As a result, the manager K can clearly grasp the communication state between the employees P without misidentification or preconception.

  In addition, when humans communicate with each other, they are usually located at a distance that is relatively close to each other, and the close state continues during the conversation. Therefore, in the present embodiment, in particular, according to the length of time that the distance between the mobile stations T is within a predetermined range (in this example, the same coordinates. The adjacent coordinates may be within a predetermined distance range in the vicinity) Calculate communication activity. Thereby, indexing can be performed in a form that accurately reflects the state of conversation between the employees P.

  In the present embodiment, in particular, when displaying the communication activity level, a mode in which the communication display between the employee Ps with high communication activity level is emphasized over the communication display between the other employee Ps (the above-described example). In the case, the distance from the circle center is displayed). As a result, in a communication state that can exist between a plurality of employees P, it is possible to make the relationship (interaction) in which communication is particularly prominent visually more prominent than the other relationships. As a result, the manager K can be made to recognize such a state clearly.

  Further, in particular, when the above display is performed, a specific employee P (employee P1 in the example of FIG. 16) is used as a reference in accordance with the degree of communication activity with other employees P (in the example of FIG. Change the distance). Thereby, it is possible to make the manager K recognize the communication relationship based on the specific employee P in an easily understandable and reliable manner. Therefore, for example, it is possible to take measures such as reviewing the group organization for employees P with low communication status, and communication within the organization (in this example, a company) can be activated. As a result, information sharing among employees P can be promoted, and the organization can be activated.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit and technical idea of the present invention. Hereinafter, such modifications will be described.

(1) When detecting conversational voice In the above embodiment, a state in which the distance between the mobile stations T is within a predetermined range (same coordinates in the above example) is regarded as a communication state (conversation state), and the communication activity level However, the present invention is not limited to this. That is, the voice of the conversation may be directly detected with a microphone or the like.

  FIG. 18 is a functional block diagram showing a functional configuration of the communication detection system 1 according to such a modification, and corresponds to FIG. 2 of the above embodiment. Components equivalent to those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted or simplified as appropriate.

  In FIG. 18, in this modification, the mobile stations T1 to T4 are newly provided with a microphone 36 (voice detection means) for detecting the voice around the corresponding employee P in addition to the IC circuit unit 31. The audio signal detected by the microphone 36 is input to the control unit 34 to determine whether or not it is a conversation (details will be described later).

  FIG. 19 is a sequence diagram illustrating an example of transmission / reception of various signals transmitted / received among the management server S, the base station R, and the mobile station T and a control operation in the present modification, and corresponds to FIG. 17 of the above embodiment. FIG. Components equivalent to those in FIG. 17 are denoted by the same reference numerals, and description thereof is omitted or simplified as appropriate.

  FIG. 19 is different from FIG. 17 in that steps ST2, ST5, and ST20 are newly provided for the mobile station T, and steps SS30 ′ and SS70 ′ are provided for the management server S instead of steps SS30 and SS70.

  That is, the mobile station T receives the transmission request signal transmitted from the base station R in step SR10 by the radio unit 33, and then inputs the audio signal detected by the microphone 36 to the control unit 34 in step ST2 newly provided. To do. In the subsequent step ST5, the control unit 34 determines whether or not a predetermined threshold is exceeded in this example based on the output level of the audio signal detected in step ST2 (or further considering frequency, sustainability, etc.). It may be determined whether or not the detected voice is conversation (conversation determination means). If the output level is less than the threshold value, the determination in step ST5 is not satisfied, and the process proceeds to step ST10 similar to FIG. 17, and the radio unit 33 of the mobile station T detects the corresponding distance via the antenna 32 as described above. Transmit radio signal for use. On the other hand, if the output level is equal to or higher than the threshold value, the determination in step ST5 is satisfied, and the process proceeds to newly provided step ST20. In step ST20, a conversation signal corresponding to conversation detection is generated, and the radio unit 33 transmits a distance detection radio signal including the conversation signal to the base station R via the antenna 32 (conversation signal transmission means). In addition, step ST5 and step ST20 comprise the conversation detection means as described in each claim.

  The distance detection radio signal transmitted from the mobile station T in step ST10 or step ST20 is received via the antenna 12 in step SR20 by the radio unit 16 of each base station R1 to R4, as in the above embodiment. . After that, as described above, the arrival time detection unit 19 outputs the reception time information at that time (including the conversation signal if there is a conversation signal) to the management server S. In step SS20, the CPU 21 of the management server S Based on the difference between the reception times input from R1 to R4, the position coordinates of the mobile stations T1 to T4 are calculated (position detection means).

  Thereafter, in step SS30 ′ newly provided, as in step SS30, the CPU 21 of the management server S calculates the position coordinates and position detection time of each mobile station T as a communication element calculated in step SS20. Is updated in the employee location database (communication element recording means) and the location history of each mobile station T is updated. At this time, if the conversation signal is included in the distance detection radio signal input from the base station R (see step ST20), the fact that the conversation signal is present (see flag “1” shown in FIG. 20 described later). ) As a communication element together with the corresponding position coordinates and position detection time in the employee position database. If the conversation signal is not included in the distance detection radio signal input from the base station R (see step ST10), the communication element indicates that there is no conversation signal (see flag “0” shown in FIG. 20 described later). Are written together with the corresponding position coordinates and position detection time in the employee position database.

  Subsequent Step SS40, Step SS50, and Step SS60 are the same as those in FIG. 17, and if there is an instruction input for calculating the communication activity level from the administrator K, the display unit 24 calculates the communication activity level and inputs the display condition instruction. When the input is made, the process proceeds to step SS70 ′ newly provided.

  In step SS70 ′, as in step SS70, the CPU 21 of the management server S stores the location history database of each mobile station T updated in step SS30 ′ according to the calculation condition input by the administrator K in step SS60. Based on the calculation method described above, the communication activity level is calculated (communication activity level calculation means). At this time, unlike (D-3) of the above embodiment, in the present modification, a plurality of mobile stations T are located within a predetermined range (same coordinates in this example), and the flag is “1”. Only in some cases, the mobile stations T1 to T4 are recognized as being in a conversation state. Then, in a predetermined time range (section), a cumulative value of a time range in which a plurality of mobile stations T are located at the same coordinate and the flag is “1” (accumulated value of seconds in this example) is calculated as a communication activity level. To do.

  Subsequent display in step SS80 and its display mode are the same as those in the above embodiment, and a description thereof will be omitted.

  FIG. 20 is a diagram illustrating the employee position database in the present modification, and corresponds to FIG. 10 described above. In FIG. 20, in this employee position database, as described above, in addition to the positions of the mobile stations T1, T2, T3, and T4 at the detection times of 1 second intervals, the conversation signals of the mobile stations T1, T2, T3, and T4 (Conversation signal present: flag “1”, no conversation signal: flag “0”) is stored as a communication element. The management server S can acquire the position history and conversation signal history of the mobile stations T1 to T4 from this database, and as described above, the positions of the plurality of mobile stations T are located at the same coordinates, and the flag Recognize that mobile stations T1 to T4 having "1" are in a conversation state.

  In the example shown in FIG. 20, the mobile station T1 (in other words, the employee P1) has the employee P1 in the room Z2 for 12 seconds from XX year Δ month × day 11:23:45 to 11:23:57. It is located at coordinates (15, 4) which is the position of the seat (see FIG. 21 described later), and the flag is “0”. After that, it is located at the same coordinate (15, 4) for 10 seconds from 11:23:58 to 11:24:08, and the flag is “1”. After that, it is located at the same coordinate (15, 4) for 6 seconds from 11:24:09 to 11:24:15, and the flag is “0”.

  The mobile station T2 (in other words, the employee P2) is in the position of the seat of the employee P2 for 3 seconds from 11:23:45 to 11:23:48 (see FIG. 21 described later). Located at a certain coordinate (17, 4), the flag is “0”. Thereafter, it is located at the coordinate (15, 4), which is the position of the seat of the employee P1, for 7 seconds from 11:23:50 to 11:23:57, and the flag is “0”. After that, for 10 seconds from 11:23:58 to 11:24:08, it is located at the coordinates (15, 4), which is the seat position of the employee P1, and the flag is “1”. And it is located in the said coordinate (17, 4) which is the position of the seat of the employee P2 for 5 seconds from 11:24:10 to 11:24:15, and a flag is "0".

  The mobile station T3 (in other words, employee P3) is in the position of the seat of employee P3 for 30 seconds from 11:23:45 to 11:24:15 (see Fig. 21 described later). Located at a certain coordinate (15, 1), the flag is “0”.

  The mobile station T4 (in other words, employee P4) is in the position of the seat of employee P4 for 30 seconds from 11:23:45 to 11:24:15 (see Fig. 21 described later). Located at a certain coordinate (17, 1), the flag is “0”.

  As described above, the following conversation state can be detected in a section of 30 years from XX year Δ month × day 11:23:45 to 11:24:15. That is, for 3 seconds from 11:23:45 to 11:23:48, employee P1, employee P2, employee P3, and employee P4 are located in their seats and no one is talking to each other. (See FIG. 21). Thereafter, due to the movement of the employee P2, the employee P1 and the employee P2 are located at the seat of the employee P1 (coordinates (15, 4)) for 7 seconds from 11:23:50 to 11:23:57. However, since the flag is “0”, the user is not in a conversation (for example, the employee P2 is waiting for the employee P1 to be free). (See FIG. 22) Then, for 10 seconds from 11:23:58 to 11:24:08, employee P1 and employee P2 are located at the seat of employee P1 (coordinates (15, 4)), and the flag is Since it is “1”, the conversation state of these two persons is established (see FIG. 23).

  Also in this modification, the same effect as the above embodiment is obtained. In addition, in this modified example, as described above, the microphone 36 is provided in the mobile station T to detect voice, and the conversation state is detected based on the detection result. In this way, the conversation state is directly detected on the mobile station T side, and the communication activity is calculated by the management server S in consideration of the detection result. Thereby, it is possible to perform indexing in a form that more reliably reflects the state of conversation.

  At this time, in particular, it is determined whether the mobile station T is talking or not talking based on the detection result continuously detected as a voice level by the microphone 36, and if it is in a talking state, it is converted into a corresponding talking signal form. Transmit to base station R. By performing such signalization, the management server S can reliably record for each time in the form of the presence / absence of the conversation signal (see step SS30 ′), and the communication activity level can be determined by the presence / absence of the conversation signal. It can be calculated in a form that takes into account. That is, by converting the voice detection result into the presence / absence of conversation, the indexing can be easily and reliably incorporated into the calculation content.

(2) Case where communication activity level is corrected according to place This modification corresponds to a case where the place where the conversation is performed has a certain correlation with the density of the conversation or the content of the conversation. That is, in the present modification, the communication activity level is corrected according to which area of the rooms Z1 to Z3, M and the corridor B the employees P are present.

  For example, as shown in FIG. 24, when employee P1 and employee P2 are talking in meeting space Ma, for example, as shown in FIG. 25, employee P1 and employee P2 are talking in toilet Z3, and Then, the nature of conversation (concentration of conversation, conversation content, etc.) is generally different. If it is a conversation in the meeting space Ma, there is a high possibility that it is a conference (dense conversation), and if it is a conversation in the toilet Z3, there is a high possibility that it is a chat. That is, since the nature of communication (conversation) differs depending on the area where each employee P exists, the communication activity level can be corrected in consideration of this.

  FIG. 26 is a sequence diagram illustrating an example of transmission / reception of various signals transmitted / received among the management server S, the base station R, and the mobile station T and control operations in the present modification, and corresponds to FIGS. 17 and 19 described above. FIG. Components equivalent to those in FIG. 17 are denoted by the same reference numerals, and description thereof is omitted or simplified as appropriate.

  26 is different from FIG. 17 in that step SS75 is newly provided between step SS70 and step SS80 for the management server S. After calculating the communication activity level by the above-described method in step SS70, the process proceeds to step SS75.

  In step SS75, based on the position detection result in step SS20, communication is performed depending on in which of the rooms Z1 to Z3, M and corridor B the employees P whose communication activity levels are calculated in step SS70. The degree of activity is corrected (first correction means). In this example, the communication activity calculated in step SS70 is multiplied by a weighting factor (details will be described later).

  FIG. 27 is a diagram illustrating an example of a weighting coefficient when the above correction is performed. As shown in the figure, in this example, the meeting space M has a weighting factor 3, the living room Z2 has a weighting factor 2, the corridor B has a weighting factor 1, and the toilet Z3 has a weighting factor 0.5.

  According to this modification, more detailed indexing can be performed in response to the difference in the nature of the conversation depending on the location, and convenience is improved. In particular, it is possible to characterize and characterize the difference in the nature of the conversation by quantifying the difference in the value of the weight coefficient.

  In the above modification, for example, the weighting factor may be set to 0 with the toilet Z3, the corridor B, and the like as non-calculation areas (for example, set by the administrator K), and the communication activity level may not be calculated. In this case, it is possible not to calculate the communication activity level in a place where it is not necessary, such as a work story excluding chat (in other words, only where it is necessary).

(3) When correcting the communication activity level according to the equipment When correcting the communication activity level as in (2) above, which equipment in the rooms Z1 to Z3 and M are near the equipment P Accordingly, the communication activity level may be corrected.

  For example, as shown in FIG. 28, when the employee P1 and the employee P2 have a conversation in the vicinity of the whiteboard WB in the meeting space Mb, there is a high possibility that it is a conference (dense conversation). For example, as shown in FIG. In the case where the employee P1 and the employee P2 are talking in the corridor B, it is highly likely that it is a chat. For example, as shown in FIG. 30, the employee P1 and the employee P2 talk in the vicinity of the desk DK2 in the room Z2. If you are, it is likely that you are talking about work. When paying attention to such a point, step SS75 in FIG. 26 is used by using the same weighting coefficient as that of the modified example of (2) (set according to which equipment each employee P is in the vicinity of). The communication activity level can be corrected by multiplying the corresponding weighting factor in (constituting the second correction means).

  FIG. 31 is a diagram illustrating an example of a weighting coefficient when the above correction is performed. As shown in the figure, in this example, the weighting factor is 3 in the area where the whiteboard WB is installed, the weighting factor is 2 in the area where the desk DK2 is located, and the weighting factor is 0.5 in the sofa SF (not shown). ing.

  According to the present modification, as in the modification (2) above, more detailed indexing can be performed in response to the difference in the nature of conversation based on the type of equipment, and convenience is improved.

(4) TOA method In the above, the so-called TDOA (Time Difference of Arrival) method that performs distance measurement processing based on the reception time difference of each base station R with respect to the radio signal for distance detection from the mobile station T is taken as an example. Although explained, it is not limited to this. That is, distance measurement processing may be performed using a method using RSSI (Received Signal Strength) or a TOA (Time of Arrival) method. In the case of the TOA system, the above-described clock 35 is provided in the mobile stations T1 to T4 and the clocks of the mobile stations T1 to T4 and the base stations R1 to R4 are adjusted. Then, the arrival times (propagation times) from the mobile stations T1 to T4 to the base stations R1 to R4 are calculated based on the transmission times at the mobile stations T1 to T4 and the reception times at the base stations R1 to R4. The position detection process can be performed at each of the mobile stations T1 to T4.

  Also by this modification, the same effect as the above-mentioned embodiment and each modification is acquired.

  In addition, in the above, the arrow shown in each figure of FIG.2, FIG.18 etc. shows an example of the flow of a signal, and does not limit the flow direction of a signal.

  The sequence shown in FIGS. 17, 19, and 26 is not limited to the procedure illustrated in the present invention, and the addition and deletion of the procedure, the change of the order, etc. are within the scope not departing from the gist and technical idea of the invention. You may do.

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

It is explanatory drawing which shows roughly the whole structure of the communication detection system which is one Embodiment of this invention. It is a functional block diagram showing the functional structure of a communication detection system. It is a figure showing the mode of possession of a mobile station. It is explanatory drawing for demonstrating the technique principle of the position detection of a mobile station. It is explanatory drawing showing a mode that the administrator is looking at the employee's conversation. It is the figure which represented the outline of map information notionally. It is a figure showing the principal part of a room database. It is a figure showing a living room database. It is the figure which expressed the outline of the map information in a living room notionally. It is a figure showing an employee position database. It is explanatory drawing explaining the example of a communication state. It is explanatory drawing explaining the example of a communication state. It is explanatory drawing explaining the example of a communication state. It is a figure showing the example of calculation of communication activity level. It is explanatory drawing explaining the process for visualization of a communication state. It is a figure showing an example of the visualization display of a communication state. It is a sequence diagram showing an example of transmission / reception of various signals transmitted / received among a management server, a base station, and a mobile station, and a control operation. It is a functional block diagram showing the functional structure of the modification which detects conversation voice. It is a sequence diagram showing transmission / reception of various signals transmitted / received among a management server, a base station, and a mobile station, and control operation. It is a figure showing an employee position database. It is explanatory drawing explaining the example of a communication state. It is explanatory drawing explaining the example of a communication state. It is explanatory drawing explaining the example of a communication state. It is explanatory drawing explaining the modification which correct | amends a communication active degree according to a place. It is explanatory drawing explaining the modification which correct | amends a communication active degree according to a place. It is a sequence diagram showing transmission / reception of various signals transmitted / received among a management server, a base station, and a mobile station, and control operation. It is a figure showing an example of a weighting coefficient. It is explanatory drawing explaining the modification which correct | amends a communication active degree according to fixtures. It is explanatory drawing explaining the modification which correct | amends a communication active degree according to fixtures. It is explanatory drawing explaining the modification which correct | amends a communication active degree according to fixtures. It is a figure showing an example of a weighting coefficient.

Explanation of symbols

1 Communication detection system 12 Antenna (second antenna means)
24 Display section (communication display means)
31 IC circuit part (memory part)
32 Antenna (first antenna means)
36 Microphone (voice detection means)
P1-P4 Employee (Detected person)
R1-R4 base station T1-T4 mobile station

Claims (10)

A plurality of mobile stations comprising a storage unit for storing information and first antenna means for transmitting and receiving information, and capable of moving in a predetermined movable region;
A base station comprising second antenna means for transmitting and receiving information to and from the plurality of mobile stations by wireless communication;
A communication detection system for detecting a communication state of a plurality of detected persons respectively possessing the plurality of mobile stations,
Position detecting means for detecting the position of each of the plurality of mobile stations based on radio signals transmitted from the first antenna means of the plurality of mobile stations and received by the second antenna means of the base station;
Communication element recording means for recording a communication element related to the detected person of each mobile station based on the detection result of the position detection means,
Based on the recorded content of the communication element recording means, communication activity level calculating means for calculating the communication activity level of each detected person constituting the plurality of detected persons,
A communication detection system comprising: a communication display unit that displays a corresponding communication state based on a calculation result of the communication activity level by the communication activity level calculation unit. The communication element recording means includes:
As the communication element, record the position of each mobile station for each time,
The communication activity level calculating means includes:
The communication activity level is calculated according to the length of time that the distance between mobile stations is within a predetermined range based on the recorded contents of the communication element recording means relating to a plurality of mobile stations. Item 4. The communication detection system according to item 1. The mobile station
Voice detecting means for detecting surrounding voice;
A conversation detecting means for detecting a conversation state of the corresponding detected person based on a detection result of the voice detecting means;
The communication activity level calculating means includes:
Based on the recorded contents of the communication element recording means related to a plurality of the mobile stations, depending on whether the distance between the mobile stations is within a predetermined range, and the detection result of the conversation detection means regarding the mobile stations, The communication detection system according to claim 2, wherein the communication activity level is calculated. The conversation detection means of the mobile station is
Conversation determining means for determining whether the detected person is talking based on the detection result of the voice detecting means;
A conversation signal transmitting means for generating a corresponding conversation signal and transmitting it to the base station via the first antenna means when the conversation determination means determines that the detected person is talking. And
The communication element recording means includes:
As the communication element, for each time, record the position of each mobile station and the presence or absence of the conversation signal,
The communication activity level calculating means includes:
Based on the recorded contents of the communication element recording means related to a plurality of mobile stations, depending on whether the distance between the mobile stations is within a predetermined range, and whether the conversation signal of those mobile stations exists, The communication detection system according to claim 3, wherein the communication activity level is calculated. Based on the map information of the movable area and the position detection result of the position detecting means, the detected persons whose communication activity is calculated by the communication activity calculating means are in which area of the movable area 5. The communication detection system according to claim 2, further comprising a first correction unit configured to correct the communication activity level depending on whether the communication activity level exists. Based on the map information including the arrangement information of the predetermined part in the movable area and the position detection result of the position detection means, the detected persons whose communication activity level is calculated by the communication activity level calculation unit are 5. The communication detection system according to claim 2, further comprising: a second correction unit that corrects the communication activity level depending on whether the equipment is present in the vicinity of the equipment. The correction means includes
When the detected persons are present in a predetermined area of the movable area or in the vicinity of the equipment, a corresponding weighting factor is set for the corresponding communication activity level. The communication detection system according to claim 5 or 6, wherein the correction is performed by multiplication. The communication display means includes
The display of the communication state is performed in such a manner that the communication display between the detected persons having a high communication activity level calculated by the communication activity level calculating means is emphasized more than the communication display between the other detected persons. The communication detection system according to claim 2, wherein the communication detection system is performed. The communication display means includes
The communication state is displayed in a display mode corresponding to the level of communication activity between the detected person and each of a plurality of other detected persons with reference to a specific detected person. 8. The communication detection system according to 8. A communication detection device for detecting a communication state by a plurality of detected persons,
A communication element recording means for recording a communication element related to each detected person based on the positions of the plurality of detected persons;
Based on the recorded content of the communication element recording means, communication activity level calculating means for calculating the communication activity level of each detected person constituting the plurality of detected persons,
A communication detection device comprising: a communication display unit that displays a corresponding communication state based on a calculation result of the communication activity level by the communication activity level calculation unit.

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