JP2020024688A - Information service system, information service method, and program - Google Patents

Abstract

To provide an information service system, an information service method, and a program, which can easily grasp the action state of each target person in a predetermined area.SOLUTION: An information service system includes: first acquisition means 41 for acquiring information on the physical state of a plurality of target persons within a predetermined area; second acquisition means 42 for acquiring information on reception signal intensity when the other device receives a wireless signal transmitted from one of a terminal device provided for each target person and a communication device provided at a plurality of positions in the predetermined area; position estimation means 45 for estimating the position of the terminal device on the basis of the reception signal intensity of the wireless signal transmitted or received by the communication device; and presentation means 46 for presenting information on the action state of each target person within the predetermined area on the basis of at least one of the information on the physical state of each target person and the position of the terminal device.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an information providing system, an information providing method, and a program.

  For example, in the field of production / distribution, it has been considered to improve the work efficiency by analyzing the behavior of each of a plurality of workers who work in a factory or the like. As an example of such behavior analysis technology, a technology in which a stay time of a person in a facility such as an exhibition hall or a large store is displayed on a heat map is known (for example, Patent Document 1).

  According to the technology described in Patent Literature 1, in a system that detects a current position of a portable terminal by receiving a radio wave emitted from a radio wave transmitter installed at a predetermined position, a stay time is classified into four stages and stays. By displaying the time trajectory, it is configured such that it is possible to visually recognize at which position and for how long.

JP 2015-152483 A

  In the related art, it is possible to grasp only the stay time at each position in the facility. For example, if some work is being performed at a certain position and the stay time is long, or a break is taken at the position. Therefore, it was difficult to grasp how the subject of the behavior analysis was acting at the position (behavior situation), such as whether the stay time was long.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an information providing system, an information providing method, and a program capable of easily grasping the behavior status of each subject in a predetermined area. I do.

  In order to solve the above problem, first, the present invention provides a first acquisition unit for acquiring information on the physical condition of a plurality of subjects within a predetermined area, a terminal device provided for each subject, A second acquisition unit for acquiring information on a received signal strength when the other receives a wireless signal transmitted from one of the communication devices provided at a plurality of positions in the area; and Position estimating means for estimating the position of the terminal device based on the received signal strength of the received wireless signal, and at least one of the information on the physical condition of each subject and the position of the terminal device, within the predetermined area And a presentation unit for presenting information on the behavioral status of each subject (invention 1).

  Here, the information on the physical condition of the target person includes, for example, the acceleration of the target person (may be the acceleration at a predetermined location), the angular velocity (may be the angular velocity at a predetermined location), the heart rate (pulse), It may be a value such as blood pressure, body temperature, sweat rate, number of steps, walking speed, posture, exercise intensity (for example, heart rate / maximum heart rate) or calorie consumption, or the acceleration, angular velocity, heart rate (pulse rate) of the subject. ), Blood pressure, body temperature, amount of sweat, number of steps, walking speed, posture, exercise intensity, calorie consumption, etc., may be obtained by substituting any of the values into a predetermined calculation formula. It may be information indicating any degree such as acceleration, angular velocity, heart rate (pulse), blood pressure, body temperature, sweat rate, number of steps, walking speed, posture, exercise intensity, and calorie consumption.

  Further, the information on the received signal strength may be, for example, a value of the received signal strength, or may be a value obtained by substituting the value of the received signal strength into a predetermined formula, Information indicating the degree of the received signal strength may be used.

  According to this invention (Invention 1), at least one of the position of the terminal device estimated based on the information on the received signal strength of the radio signal transmitted or received by the communication device and the information on the physical condition of each subject. Based on the information, the information on the activity status of each subject in the predetermined area is presented. For example, the stay time of the subject in one or more places in the predetermined area is simply presented in a heat map. Instead, information about the behavior of each subject in the predetermined area (for example, how each subject performed at one or more positions in the predetermined area, etc.) may be presented. Since it becomes possible, it is possible to easily grasp the behavior status of each target person in the predetermined area.

  In the above invention (Invention 1), the information on the behavior situation may include information on at least one of a behavior classification, a moving ratio, a work amount, and the number of steps for each predetermined period (Invention 2).

  According to this invention (Invention 2), it is possible to easily grasp at least one of the behavior classification, the moving ratio, the work amount, and the number of steps of each subject in the predetermined area for each predetermined period.

  In the above inventions (Inventions 1 and 2), the information on the behavior situation may include information on a stay time for each of one or more places in the predetermined area (Invention 3).

  According to this invention (Invention 3), it is possible to easily grasp the staying time of each subject at each of one or more places in the predetermined area.

  In the above inventions (Inventions 1 to 3), the information on the behavior situation may include information on an amount of work for each of one or more places in the predetermined area (Invention 4).

  According to this invention (Invention 4), it is possible to easily grasp the workload of each subject at each of one or more locations in the predetermined area.

  In the above inventions (Inventions 1 to 4), the information on the activity situation may include a heat map representing the activity situation at one or more locations in the predetermined area (Invention 5).

  According to this invention (Invention 5), the behavior status of each subject at each of one or more locations in the predetermined area can be easily grasped by the heat map.

  In the above inventions (Inventions 1 to 5), the information on the behavior situation may include information on a probability of movement from any location in the predetermined area to another location (Invention 6).

  According to this invention (Invention 6), it is possible to easily grasp how each subject moves in the predetermined area.

  In the above inventions (Inventions 1 to 6), there is provided a third acquisition unit for acquiring information on an attribute of each subject, and the presenting unit is configured to provide information on an action status of a subject having a predetermined attribute among the subjects. It may be presented (Invention 7).

  According to this invention (Invention 7), it is possible to present information on the behavior status of a target person having a predetermined attribute among a plurality of attributes. In a state limited to a person, it is possible to grasp an action situation in a predetermined area.

  In the above invention (Invention 7), the predetermined attribute may be an attribute selected from a plurality of attributes (Invention 8).

  According to this invention (Invention 8), it is possible to present information on the behavior of a subject having an attribute selected from a plurality of attributes. By selecting, it is possible to grasp the behavior situation in the predetermined area in a state where the person to be subjected to the behavior analysis is limited to the person having the desired attribute.

  In the above inventions (Inventions 1 to 8), there is provided a behavior estimating means for estimating a behavior classification of each subject based on information on a physical state of each subject, and the presenting means includes a behavior classification and a body of each subject. Based on the information on the state and the position of the terminal device, a heat map representing an activity state related to a predetermined action at one or more places in the predetermined area is presented as information regarding the activity state of each subject. (Invention 9).

  According to this invention (Invention 9), the position of the terminal device estimated based on the information on the received signal strength of the wireless signal transmitted or received by the communication device and the information on the physical condition of each subject are estimated. Based on the behavior classification of each subject and the information on the physical condition of each subject, a heat map representing a behavioral state related to a predetermined behavior at one or more locations in a predetermined area is presented. When the subject's staying time at one or more locations within the predetermined area is not simply presented in the heat map, but the subject performs a predetermined action at one or more locations within the predetermined area. Can be presented on a heat map.

  In the above invention (Invention 9), the predetermined action may be an action selected from a plurality of action classifications (Invention 10).

  According to this invention (Invention 10), it is possible to present a heat map indicating the behavior status related to the behavior selected from the plurality of behavior classifications. By selecting, it is possible to grasp the behavior status regarding the desired behavior in the predetermined area.

  In the above inventions (Inventions 9 to 10), the behavior estimating means estimates the behavior classification of each subject by machine learning using information on a physical state corresponding to each of the plurality of behavior classifications as learning data. (Invention 11).

  According to this invention (Invention 11), the behavior classification of each subject can be estimated based on information on the physical condition of each subject without the need for subjective judgment.

  In the above inventions (1 to 11), the position estimating means includes at least two communication devices including a communication device having the highest received signal strength of a transmitted or received wireless signal among communication devices provided at the plurality of positions. A device is selected, a test is performed to determine whether there is a significant difference in the average value of the received signal strength within a predetermined period between the selected communication devices, and when it is verified that there is a significant difference, the received signal strength is determined. The highest position of the communication device may be estimated as the position of the terminal device (Invention 12).

  According to this invention (Invention 12), the received signal strengths of the specific communication apparatus and the received signal strengths of the other communication apparatuses are not simply compared with each other for the plurality of communication apparatuses. By estimating the position of the terminal device based on whether there is a significant difference between them (that is, whether the difference in received signal strength is accidental), for example, reduce the influence of radio wave fluctuation and the like. Then, the position of the terminal device can be accurately estimated.

  In the above inventions (1 to 12), the position estimating unit generates the position estimating unit based on a received signal strength of a radio signal transmitted or received by each of at least three of the communication devices provided at the plurality of positions. A first vector having a distance between each of the at least three communication devices and the terminal device as an element, and a second vector corresponding to a predetermined position in the predetermined region, wherein the at least three communication devices The position of the terminal device may be estimated based on a similarity between a second vector and a distance between the predetermined position and the predetermined position as an element (Invention 13).

  Here, the reception characteristics (for example, antenna gain or the like) of one of the communication device and the terminal device that receives the radio signal may differ depending on, for example, the type and / or individual of the one device. May exist at a certain position in the predetermined area, the received signal strength of the radio signal received by the one device may differ depending on the type and / or individual of the one device. That is, the relationship between the distance between the communication device and the terminal device and the received signal strength may be different for each type and / or individual device of one of the communication device and the terminal device that receives a wireless signal.

  According to this invention (Invention 13), the first vector having the distance between each of the at least three communication devices and the terminal device as an element based on the information on the received signal strength corresponding to each of the at least three communication devices. Since the first vector is generated, even if, for example, the reception characteristic of one of the communication device and the terminal device that receives the wireless signal is different for each type and / or individual of the one device, the first vector is , For each of the at least three communication devices, based on the relationship between the received signal strength corresponding to each of the at least three communication devices and the distance between each of the at least three communication devices and the terminal device. Since the position of the terminal device is estimated based on the similarity between the first vector and the second vector having the distance between each of the at least three communication devices and the predetermined position in the predetermined region as an element, for example, When the similarity between the first vector and the second vector is high, the predetermined position corresponding to the second vector can be estimated as the position of the terminal device. Thus, instead of simply comparing the distance between the communication device and the terminal device based on the information on the received signal strength, the position of the terminal device is estimated from the similarity between the first vector and the second vector. Accordingly, the position of the terminal device can be accurately estimated irrespective of the difference in the reception characteristics of one of the communication device and the terminal device that receives the wireless signal.

  Secondly, the present invention provides a computer comprising a step of acquiring information on the physical condition of a plurality of subjects in a predetermined area, a terminal device provided for each subject, and a plurality of terminals provided at a plurality of positions in the predetermined area. Obtaining information on the received signal strength when the other receives a wireless signal transmitted from any one of the communication device, based on the received signal strength of the wireless signal transmitted or received by the communication device Estimating the position of the terminal device, and presenting information on the behavioral state of each subject within the predetermined area based on at least one of the information on the physical condition of each subject and the location of the terminal device. And an information providing method for executing the respective steps (invention 14).

  Third, the present invention provides a computer with a function of acquiring information on the physical condition of a plurality of subjects in a predetermined area, a terminal device provided for each subject, and a computer provided at a plurality of positions in the predetermined area. A function of acquiring information on the received signal strength when the other receives a wireless signal transmitted from any one of the communication devices, and based on the received signal strength of the wireless signal transmitted or received by the communication device. A function of estimating the position of the terminal device and a function of presenting information on the behavior of each subject in the predetermined area based on at least one of the information on the physical condition of each subject and the position of the terminal device. Are provided (Invention 15).

  ADVANTAGE OF THE INVENTION According to the information provision system, the information provision method, and the program of this invention, the action situation for every target person in a predetermined area | region can be grasped | ascertained easily.

It is a figure showing roughly the basic composition of the information service system concerning one embodiment of the present invention. FIG. 3 is a block diagram illustrating a configuration of a terminal device. FIG. 2 is a block diagram illustrating a configuration of an information providing device. It is a functional block diagram for explaining a function which plays a major role in the information providing system. FIG. 4 is a diagram illustrating a configuration example of acquired data. It is a figure showing the example of composition of worker data. It is a figure showing the example of composition of the data for learning. It is a flowchart which shows an example of a position estimation process. FIG. 3 is a diagram illustrating a relationship between a distance between a communication device and a terminal device and a received signal strength. It is a figure showing the example of composition of action situation data. It is a figure showing the example of composition of a display screen. It is a figure showing the example of composition of a display screen. It is a flow chart which shows an example of the main processing of the information service system concerning one embodiment of the present invention. FIG. 13 is a diagram illustrating an example of a plurality of sub-regions to be subjected to position estimation in an information providing system according to a modification. FIG. 7 is a diagram illustrating a configuration example of second vector data. FIG. 3 is a diagram illustrating an example of a vector space model. It is a figure showing other examples of composition of action situation data. (A) is a figure which shows an example of the amount of work of the worker for every predetermined period, (b) is a figure which shows an example of the ratio of a worker's movement and stillness for every predetermined period. (A) is a figure which shows an example of the ratio of the stay time of the worker in one or more positions for every predetermined period, (b) is the stay time in one or more positions of the worker in a predetermined period It is a figure which shows an example of the ratio of. (A) is a figure which shows an example of the ratio of the work amount in one or more positions of the worker for every predetermined period, (b) is the work amount in one or more positions of the worker in a predetermined period It is a figure which shows an example of the ratio of. FIG. 7 is a diagram illustrating an example of a heat map representing an activity state of a worker at one or more positions. It is a figure showing an example of an operator's movement probability from any position to other positions. It is a flow chart which shows an example of the main processing of the information service system concerning a modification.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, this embodiment is an exemplification, and the present invention is not limited to this.

(1) Basic Configuration of Information Providing System FIG. 1 is a diagram schematically showing a basic configuration of an information providing system according to an embodiment of the present invention. As shown in FIG. 1, in this information providing system, for example, a plurality of communication devices 10 provided in a predetermined area R such as indoors of a factory and one or more workers (target persons) existing in the area R The information providing apparatus 30 transmits and receives a wireless signal to and from the terminal device 20 attached to (provided in) the area R based on information obtained from each communication apparatus 10 via the communication network NW. And a heat map indicating an action status related to the predetermined action at one or more places. Each communication device 10 and the information providing device 30 are connected to a communication network NW (network) such as the Internet or a LAN (Local Area Network).

  Each communication device 10 is provided at a position in the area R where wireless communication with the terminal device 20 can be performed using a wireless LAN (for example, Wi-Fi (registered trademark)). In addition, each communication device 10 is provided with an RSSI circuit that detects a received signal strength (RSSI) when a wireless signal transmitted from the terminal device 20 is received. Each communication device 10 may be, for example, a device that relays wireless communication between two or more terminal devices 20, or may be a device that communicates between the terminal device 20 and another terminal device (not shown) existing in the region R. It may be a device that relays wireless communication between the devices, or a device that relays communication between the terminal device 20 and another device connected via the communication network NW. Further, each communication device 10 may be a packet capture.

  The terminal device 20 is configured to be able to perform wireless communication with each communication device 10 using a wireless LAN when present in the area R. Further, the terminal device 20 transmits a wireless signal (for example, a probe request or the like) including its own identification information (for example, a MAC address or the like) at predetermined intervals (for example, several seconds) in order to perform wireless communication with each communication device 10. It is configured to transmit. Further, the terminal device 20 continuously or intermittently (for example, at a predetermined interval (for example, a predetermined interval (for example, a three-axis direction) and an angular speed in the three-axis direction) of the worker wearing the terminal device 20). A measuring device 25 (shown in FIG. 2) for measuring every 50 milliseconds or 5 seconds) is provided. Here, the wireless signal transmitted from the terminal device 20 may include information on the body condition measured by the measuring device 25. The terminal device 20 may be, for example, a wearable device that can be worn on the body of the worker, or a portable device that the worker can carry. In addition, the terminal device 20 is, for example, a mobile terminal, a smartphone, a PDA (Personal Digital Assistant), a personal computer, a television receiver having a two-way communication function (including a so-called multifunctional smart TV), and the like. As described above, a terminal device operated by an individual user may be used.

  Here, the case where wireless communication is performed using Wi-Fi (registered trademark) is described as an example, but the communication method is not limited to this case. For example, a wireless communication system such as Bluetooth (registered trademark), ZigBee (registered trademark), UWB, optical wireless communication (for example, infrared) may be used, or a wired communication system such as USB may be used.

  The information providing device 30 acquires from each communication device 10 information on the physical condition of the worker and information on the received signal strength when each communication device 10 receives the wireless signal transmitted from the terminal device 20. Is configured. In addition, the information providing device 30 estimates the behavior classification (for example, work content) of each worker based on the information on the physical state of each worker, and based on the received signal strength of the radio signal received by each communication device 10. To estimate the position of the terminal device 20, and based on the information on the behavior and the physical state of each worker and the position of the terminal device 20, indicate the behavior status regarding the predetermined behavior at one or more locations in the region R. It is configured to present a heat map. The information providing device 30 may be, for example, a general-purpose personal computer.

(2) Configuration of Terminal Device The configuration of the terminal device 20 will be described with reference to FIG. FIG. 2 is a block diagram showing the internal configuration of the terminal device 20. As shown in FIG. 2, the terminal device 20 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 22, a RAM (Random Access Memory) 23, a storage device 24, a measurement device 25, An interface unit 26 is provided, and a bus 20a for transmitting control signals or data signals between the units is provided.

  When power is applied to the terminal device 20, the CPU 21 loads various programs stored in the ROM 22 or the storage device 24 into the RAM 23 and executes them. The CPU 21 is configured to transmit information on the measured physical condition to each communication device 10 via the communication interface unit 26 each time the measuring device 25 measures the physical condition of the worker.

  The storage device 24 is, for example, a nonvolatile storage device such as a flash memory, a solid state drive (SSD), a magnetic storage device (for example, a hard disk drive (HDD), a floppy disk (registered trademark), a magnetic tape, or the like), and an optical disk. It may be a volatile storage device such as a RAM, and stores a program executed by the CPU 21 and data referred to by the CPU 21.

  The measuring device 25 is a device (for example, a three-axis acceleration sensor, an angular speed sensor, etc.) that continuously or intermittently measures the physical condition (three-axis acceleration and three-axis angular velocity) of the worker provided with the terminal device 20. Etc.). In the present embodiment, a case is described as an example in which the acceleration in the three-axis direction and the angular velocity in the three-axis direction are acquired as information on the physical condition. However, the information on the physical condition includes, for example, a heart rate (pulse), It may be blood pressure, body temperature (for example, skin temperature), sweating amount, exercise intensity (for example, heart rate / maximum heart rate), calorie consumption, and the like. In this case, the measuring device 25 may include, for example, a heart rate monitor, a blood pressure monitor, a thermometer, a perspiration meter, and the like.

  The communication interface unit 26 includes an interface circuit for performing communication with each communication device 10. The terminal device 20 may be provided with, for example, a display device (not shown) for displaying the display data provided from the CPU 21.

  The wireless signal transmitted from the terminal device 20 may include identification information of the terminal device 20 (for example, a MAC (Media Access Control) address or the like).

(3) Configuration of Information Providing Apparatus The configuration of the information providing apparatus 30 will be described with reference to FIG. FIG. 3 is a block diagram showing the internal configuration of the information providing device 30. As shown in FIG. 3, the information providing device 30 includes a CPU 31, a ROM 32, a RAM 33, a storage device 34, a display processing unit 35, a display unit 36, an input unit 37, and a communication interface unit 38. A bus 30a is provided for transmitting control signals or data signals between the units.

  When power is supplied to the information providing device 30, the CPU 31 loads various programs stored in the ROM 32 or the storage device 34 into the RAM 33 and executes them. In the present embodiment, the CPU 31 reads out and executes a program stored in the ROM 32 or the storage device 34 to thereby execute a first acquisition unit 41, a second acquisition unit 42, a third acquisition unit 43, and a behavior estimation unit 44, which will be described later. The functions of the position estimating means 45 and the presenting means 46 (shown in FIG. 4) are realized.

  The storage device 34 may be a nonvolatile storage device such as a flash memory, an SSD, a magnetic storage device (for example, an HDD, a floppy disk (registered trademark), a magnetic tape, or the like), an optical disk, or a volatile storage such as a RAM. The storage device may be a storage device that stores a program executed by the CPU 31 and data referred to by the CPU 31. Further, the storage device 34 stores acquired data (shown in FIG. 5), worker data (shown in FIG. 6), learning data (shown in FIG. 7), and action situation data (shown in FIG. 10), which will be described later. Have been.

  The display processing unit 35 displays the display data provided from the CPU 31 on the display unit 36. The display unit 36 is, for example, an LCD (Liquid Crystal Display) monitor including thin film transistors arranged in pixels in a matrix, and drives the thin film transistors based on display data to display data to be displayed on a display screen. indicate.

  When the information providing apparatus 30 is a button input type apparatus, the input unit 37 includes a button group including a plurality of instruction input buttons such as a direction instruction button and an enter button for accepting a user's operation input, and a numeric keypad or the like. A button group including a plurality of instruction input buttons such as character keys, and an interface circuit for recognizing a press (operation) input of each button and outputting the input to the CPU 31.

  When the information providing device 30 is a touch panel input type device, the input unit 37 mainly receives a touch panel type input by touching the display screen with a fingertip or a pen. The touch panel input method may be a known method such as a capacitance method.

  When the information providing device 30 is a terminal device capable of voice input, the input unit 37 may be configured to include a microphone for voice input, or may be input via an external microphone. An interface circuit for outputting audio data to the CPU 31 may be provided. Further, when the information providing device 30 is a terminal device capable of inputting a moving image and / or a still image, the input unit 37 may be configured to include a digital camera or a digital video camera for inputting an image. An interface circuit for receiving image data captured by an external digital camera or digital video camera and outputting the image data to the CPU 31 may be provided.

  The communication interface unit 38 includes an interface circuit for performing communication via the communication network NW.

(4) Overview of Functions in Information Providing System Functions implemented in the information providing system of the present embodiment will be described with reference to FIG. FIG. 4 is a functional block diagram for explaining functions that play a major role in the information providing system of the present embodiment. In the functional block diagram of FIG. 4, the first acquisition unit 41, the second acquisition unit 42, the position estimation unit 45, and the presentation unit 46 correspond to the main configuration of the present invention. The other units (the third obtaining unit 43 and the behavior estimating unit 44) are not necessarily indispensable components, but are components for making the present invention more preferable.

  The first acquisition unit 41 has a function of acquiring information on the physical condition of a plurality of workers (target persons) within the predetermined region R. Here, the information on the physical condition of the worker includes, for example, the acceleration of the worker (or the acceleration at a predetermined location), the angular velocity (or the angular velocity at a predetermined location), the heart rate (pulse), It may be a value such as blood pressure, body temperature, amount of sweat, number of steps, walking speed, posture, exercise intensity (for example, heart rate / maximum heart rate), calorie consumption, or the like, or the acceleration, angular velocity, heart rate (pulse) of the worker. ), A value obtained by substituting any value such as blood pressure, body temperature, amount of sweat, number of steps, walking speed, posture, exercise intensity, calorie consumption, etc. into a predetermined calculation formula, It may be information indicating any degree such as acceleration, angular velocity, heart rate (pulse), blood pressure, body temperature, sweat rate, number of steps, walking speed, posture, exercise intensity, and calorie consumption.

  The function of the first acquisition unit 41 is realized, for example, as follows. First, every time the measuring device 25 measures the worker's body condition (here, three-axis acceleration and three-axis angular velocity), the CPU 21 of the terminal device 20 stores information on the measured body condition in the RAM 23 or the storage device 24. Remember. Then, the CPU 21 of the terminal device 20 transmits the wireless signal to each communication device 10 via the communication interface unit 26 in a state including the information on the physical condition stored in the RAM 23 or the storage device 24. Here, the information regarding the physical condition may be transmitted in a state where the identification information (terminal device ID) of the terminal device 20 is associated with the information. Next, when each of the communication devices 10 receives the wireless signal from the terminal device 20, the communication device 10 transmits the received wireless signal data (including identification information of the terminal device 20 and information on the physical condition) to the communication network. The information is transmitted to the information providing device 30 via the NW.

  On the other hand, when the CPU 31 of the information providing apparatus 30 receives (acquires) the data of the wireless signal via the communication interface unit 38, the CPU 31 stores the information on the physical condition contained in the received data of the wireless signal, for example, in the RAM 33 or the storage device. 34. In this way, it is possible to acquire information on the physical condition of the worker present in the region R.

  The second acquisition unit 42 receives a wireless signal transmitted from one of the terminal device 20 provided for each worker (target person) and the communication device 10 provided at a plurality of positions in the predetermined region R. It has a function of acquiring information on the received signal strength when the other party receives the signal. Here, the information on the received signal strength may be, for example, a value of the received signal strength, or a value obtained by substituting the value of the received signal strength into a predetermined calculation formula. , Information representing the degree of the received signal strength.

  The function of the second acquisition unit 42 is realized, for example, as follows. Here, a case will be described as an example in which the second obtaining unit 42 obtains information on the received signal strength when each communication device 10 receives the wireless signal transmitted from the terminal device 20. First, each time the communication device 10 receives the wireless signal transmitted from the terminal device 20, the data of the received wireless signal (the identification information (terminal device ID) of the terminal device 20 and the information on the physical condition) are transmitted. Is included) to the information providing apparatus 30 via the communication network NW. Here, each communication device 10 transmits the value of the received signal strength of the radio signal detected by the RSSI circuit each time the radio signal is received to the information providing device 30 in a state where the value is associated with the data of the radio signal. I do.

  On the other hand, each time the CPU 31 of the information providing device 30 receives (acquires) the data of the wireless signal and the value of the received signal strength of the wireless signal via the communication interface unit 38, the data of the received wireless signal ( Here, for example, the acquired data shown in FIG. 5 is stored in a state where the information on the terminal device ID and the physical condition) and the value of the received signal strength of the wireless signal are associated with each other. The acquired data is the received signal strength detected by the RSSI circuit of each communication device 10 (in the example of the figure, the communication devices A to D) for one wireless signal for each identification information (terminal device ID) of the terminal device 20. Is described in a state where the value of the wireless signal and information on the body state (here, three-axis acceleration and three-axis angular velocity) included in the wireless signal are associated with each other. In this way, it is possible to acquire information on the received signal strength when each communication device 10 receives the wireless signal transmitted from the terminal device 20.

  The third acquisition unit 43 has a function of acquiring information on attributes of each worker (target person).

  The function of the third acquisition unit 43 is realized, for example, as follows. For example, when the CPU 31 of the information providing apparatus 30 receives (acquires) information on attributes of each worker from an external device via the communication interface unit 38, the CPU 31 stores the received information in, for example, worker data shown in FIG. I do. The worker data includes, for each piece of identification information (terminal device ID) of the terminal device 20, the attribute of the worker provided with the terminal device 20 (in the example of the figure, years of service, age, height, weight, sex, etc.). This is data described in a state of being associated. In this way, information on the attributes of each worker can be obtained. The information stored in the worker data may be input using the input unit 37, for example.

  In the storage device 24 of the terminal device 20, the identification information (terminal device ID) of the terminal device 20 and the information on the attribute of the worker provided with the terminal device 20 are associated with each other in advance. The information may be stored, and the wireless signal transmitted from the terminal device 20 may include information on the attribute of the worker. In this case, when the data of the wireless signal is received from each communication device 10, the CPU 31 of the information providing device 30 may store the information on the attribute of the worker included in the data of the wireless signal in the worker data. .

  The behavior estimating means 44 has a function of estimating the behavior classification of each worker (target person) based on information on the physical state of the worker.

  The behavior estimating unit 44 may estimate the behavior of each worker (target person) by machine learning using information on the physical state corresponding to each of the plurality of behavior classifications as learning data. Thereby, the behavior classification of each worker can be estimated based on the information on the physical state of each worker without the need for subjective judgment.

  The function of the behavior estimating means 44 is realized, for example, as follows. For example, the CPU 31 of the information providing device 30 sets, as learning data, data indicating a correspondence between a classification of a behavior performed by a worker (behavior classification) and a physical state of the worker when the behavior is performed. Perform machine learning. FIG. 7 shows an example of the learning data. The learning data shown in FIG. 7 indicates the work performed when the corresponding action is performed for each action classification (in the example of the figure, “walking”, “transportation by trolley”, “loading of luggage”, “loading of luggage”). This is data described in a state where the physical state of the person (in the example of the figure, three-axis acceleration and three-axis angular velocity) are associated with each other. Thus, as a result of the machine learning, it is possible to generate a probability model indicating the relationship between the physical state of the worker and the behavior classification of the worker. In this case, the CPU 31 inputs, for example, the information on the physical condition acquired based on the function of the first acquiring unit 41 into the probability model, so that the behavior classification of the worker corresponding to the information on the physical condition (here, Any one of “walking”, “transportation by trolley”, “loading of luggage”, and “loading of luggage” can be estimated. In the machine learning, for example, an arbitrary algorithm such as a neural network (deep learning) or a support vector machine may be used.

  The position estimating unit 45 has a function of estimating the position of the terminal device 20 based on the received signal strength of the wireless signal transmitted or received by the communication device 10.

  In addition, the position estimating unit 45 selects at least two communication devices 10 including the communication device 10 having the highest received signal strength of the transmitted or received wireless signal among the communication devices 10 provided at the plurality of positions, and selects It is tested whether or not there is a significant difference between the average values of the received signal strengths within a predetermined period between the communication devices 10 that have been subjected to the communication, and when it is determined that there is a significant difference, the communication device 10 having the highest received signal strength is determined. The position may be estimated as the position of the terminal device 20. Accordingly, the received signal strength corresponding to each of the plurality of communication apparatuses 10 is not simply compared in magnitude, but a significant difference between the received signal strength of a specific communication apparatus 10 and the received signal strength of another communication apparatus 10 is obtained. By estimating the position of the terminal device 20 on the basis of whether or not there is an error (that is, whether or not the difference between the received signal strengths is accidental), it is possible to reduce the influence of, for example, radio wave fluctuation. Can accurately estimate the position of the terminal device 20.

式（１）中、Ｐ_ｒは受信信号強度（ｄＢｍ）を示し、Ｐ_ｔは電波発信装置（ここでは、端末装置２０）の送信電力（ｄＢｍ）を示し、Ｇ_ｒは通信装置１０の受信アンテナの利得（ｄＢｉ）を示し、Ｇ_ｔは端末装置２０の送信アンテナの利得（ｄＢｉ）を示し、Ｌは自由空間損失（ｄＢｍ）を示している。このＬは式（２）でもとめられ、式（２）中、ｄは通信装置１０と端末装置２０との距離（ｍ）を示し、ｆは電波の周波数（Ｈｚ）を示し、ｃは光速（＝２．９９７９２４５８×１０^８）（ｍ／ｓ）を示している。式（１）及び式（２）によってもとめられる距離と受信信号強度の値との関係は、例えば図９に示す対数関数で表される。図９に示すように、通信装置１０と端末装置２０との距離が短いほど、受信信号強度の値が大きいことがわかる。 The function of the position estimating means 45 is realized as follows with reference to, for example, a flowchart shown in FIG. By the way, the distance between one communication device 10 and the terminal device 20 can be calculated by using, for example, the following equations (1) and (2).
_{P r = P t + G r} + G t -L ... (1)

Wherein (1), _{P r} represents the received signal strength (dBm), (in this case, the terminal device 20) _{P t} is the radio signal transmitting device indicates the transmission power of (dBm), the reception antenna of the _{G r} is the communication device 10 shows the gain (dBi), _{G t} represents the gain of the transmission antenna of the terminal device 20 (dBi), L represents the free space loss (dBm). This L is calculated by equation (2), where d indicates the distance (m) between the communication apparatus 10 and the terminal apparatus 20, f indicates the frequency of radio waves (Hz), and c indicates the speed of light ( = 2.9792458 × 10 ⁸ ) (m / s). The relationship between the distance obtained by Expressions (1) and (2) and the value of the received signal strength is represented by, for example, a logarithmic function shown in FIG. As shown in FIG. 9, it can be seen that the shorter the distance between the communication device 10 and the terminal device 20, the greater the value of the received signal strength.

  Therefore, referring to the flowchart of FIG. 8, the CPU 31 of the information providing apparatus 30 includes at least two communication apparatuses 10 including the communication apparatus 10 having the highest received signal strength (RSSI) corresponding to one wireless signal among the plurality of communication apparatuses 10. The communication device 10 is selected (Step S100). For example, the CPU 31 accesses the acquired data and, in each of the communication devices 10 (the communication devices A to D in the example of FIG. 5), two communication devices in the descending order of the value of the received signal strength corresponding to one wireless signal. Device 10 (for example, communication device A and communication device B) is selected.

  Next, the CPU 31 of the information providing apparatus 30 determines whether or not the values of the received signal strengths corresponding to the two selected communication apparatuses 10 follow a normal distribution (whether or not they have normality) (normality test). For example, the determination is made by performing a Kolmogorv-Smirnov test or a Shapiro-Wilk test (step S102).

  When the CPU 31 of the information providing apparatus 30 determines that the information has the normality (step S102: YES), the CPU 31 performs a parametric test. Specifically, the CPU 31 determines whether or not the values of the received signal strengths corresponding to the two selected communication devices 10 have equal variances, for example, by performing an F test (step S104). Further, if the CPU 31 determines that the two communication devices 10 have equal dispersion (step S104: YES), the CPU 31 determines whether there is a significant difference between the average values of the received signal strengths between the two selected communication devices 10. For example, it is determined by performing a t test (step S106). Further, when the CPU 31 determines that the two communication devices 10 do not have equal dispersion (step S104: NO), there is a significant difference between the average values of the received signal strengths within the predetermined period between the two selected communication devices 10. It is determined by performing, for example, Welch's t-test (step S108).

  When the CPU 31 of the information providing apparatus 30 determines that the information does not have the correctness (step S102: NO), the CPU 31 of the selected two communication apparatuses 10 calculates the average value of the received signal strength within a predetermined period. Whether or not there is a significant difference is determined by performing a non-parametric test such as a Mann-Whitney U test or a Wilcoxon rank sum test (step S110).

  Next, the CPU 31 of the information providing apparatus 30 determines that there is a significant difference between the average values of the received signal strengths in the predetermined period between the two selected communication apparatuses 10 in the processing of step S106, step S108, or step S110. (Step S112: YES), the position of the communication device 10 having the highest received signal strength of the two selected communication devices 10 (for example, the position of the communication device 10 in the vertical direction with respect to the plane extending horizontally in the region R). The position of the terminal device 20 may be estimated as the position of the terminal device 20 (the position of the projected image on the plane when the communication device 10 is projected) (step S114). When the CPU 31 of the information providing apparatus 30 determines that there is no significant difference between the average values of the received signal strengths within the predetermined period (step S112: NO), the current position of the terminal device 20 is not changed (that is, the current position is not changed). The position of the terminal device 20 is the same as the previous position of the terminal device 20), and the process may be terminated.

  When estimating the position of the terminal device 20, the CPU 31 of the information providing device 30 accesses the activity status data shown in FIG. 10 and identifies the identification information (terminal device ID) of the terminal device 20 and the activity estimation unit 44. The behavior classification of the worker provided with the terminal device 20, which is estimated based on the function, and the behavior status related to the behavior classification are stored in a state associated with the estimated position. The behavior status data includes, for each of one or more positions in the region R, the identification information (terminal device ID) of the terminal device 20 existing at the position, and the worker provided with the terminal device 20 at the position. The action classification of the action performed by the user and the action status of the action (in the example in the figure, “action date and time”, “speed”, “stay time”, “work amount”, and “number of steps”) are associated with each other. This is the data described in a state where

Here, the behavioral status is determined based on at least one of the information on the physical condition acquired based on the function of the first acquiring unit 41 and the position of the terminal device 20 estimated based on the function of the position estimating unit 45. You may. For example, the “action date and time” may be date and time information when the measuring device 25 of the terminal device 20 measures the physical condition. In this case, the date and time information is a timer (not shown) built in the CPU 21 of the terminal device 20. (Omitted) or the like, and may be included in a wireless signal transmitted from the terminal device 20. Further, the “speed” may be obtained by, for example, integrating the values of the three-axis acceleration. Further, the “stay time” may be a period during which the terminal device 20 is continuously present at the corresponding position. Furthermore, the “step count” may be determined by using a well-known step count detection technique using, for example, a three-axis acceleration sensor or a three-axis angular velocity sensor. The “work amount” can be represented by using an RMS (Root Mean Square) representing an average magnitude of a time signal, and an average work amount can be obtained by using the three-axis acceleration. Here, assuming that t is time and the continuous function x (t) is an aperiodic signal, the work amount x _rms can be calculated by using the following equation (3).

  The presenting unit 46 has a function of presenting information on the behavior of each subject in the predetermined region R based on at least one of the information on the physical condition of each worker (subject) and the position of the terminal device 20. .

  In addition, the presenting unit 46 performs the action related to the predetermined action at one or more locations in the predetermined area R based on the information regarding the action classification and the physical state of each worker (target person) and the position of the terminal device 20. A heat map representing the situation may be presented as information on the behavior of each worker. Accordingly, for example, the stay time of the worker at one or more places in the predetermined region R is not simply presented in the heat map, but the worker It is possible to present a stay time and the like when the user is performing an action on a heat map.

  Here, the predetermined action may be an action selected from a plurality of action classifications. This makes it possible to present a heat map representing an action status related to an action selected from a plurality of action categories. For example, by selecting a desired action from a plurality of action categories, It is possible to grasp the behavior status regarding the desired behavior in the region R.

  Further, the presenting unit 46 may present information on the behavior of a worker having a predetermined attribute among the workers (target persons). This makes it possible to present information on the behavior of a worker having a predetermined attribute among a plurality of attributes, so that a person to be analyzed for behavior is limited to a worker having a predetermined attribute, It is possible to grasp the behavior situation in the predetermined area R.

  Further, the predetermined attribute may be an attribute selected from a plurality of attributes. This makes it possible to present information on the behavior of the worker having the attribute selected from the plurality of attributes. For example, by selecting a desired attribute from the plurality of attributes, It is possible to grasp the behavior situation in the predetermined region R in a state where the person to be analyzed is limited to the worker having the desired attribute.

  The function of the presentation means 46 is realized, for example, as follows. For example, when an instruction to display the activity status of each worker in the region R is input using the input unit 37, the CPU 31 of the information providing apparatus 30 displays a display screen illustrated in FIG. To be displayed. This display screen includes a map information display unit S1 for displaying map information of the region R, and actions to be displayed by the heat map (here, “walking”, “transportation by trolley”, “loading luggage”, “ And a behavior input unit S2 including a drop-down menu for selecting any one of “load of luggage”) and a display item (in this case, any one of “number of people”, “speed”, “stay time”, and “work load”). And an attribute input unit S3 including a drop-down menu for selecting an attribute of a worker to be displayed by the heat map.

  In the drop-down menu of “years of service” of the attribute input unit S3, for example, one of a plurality of options such as “less than 3 years”, “3 years or more and less than 10 years”, “10 years or more” is selected. You may. In the “age” drop-down menu of the attribute input unit S3, for example, one of a plurality of options such as “under 20 years old”, “20 to 40 years old”, and “40 years or older” is selected. May be done. Further, in the drop-down menu of “height” of the attribute input unit S3, for example, one of a plurality of options such as “less than 150 cm”, “150 cm or more and less than 160 cm”, “160 cm or more and less than 170 cm”, and “170 cm or more” An option may be selected. Furthermore, in the drop-down menu of “weight” of the attribute input unit S3, for example, one of a plurality of options such as “less than 60 kg”, “60 kg or more and less than 80 kg”, “80 kg or more and less than 100 kg”, and “100 kg or more” May be selected. In the “gender” drop-down menu of the attribute input unit S3, for example, any one of a plurality of options such as “male” or “female” may be selected.

  Here, in the action input unit S2, when an action to be displayed by the heat map (for example, “transport by trolley”) and a display item (for example, “speed”) are selected using the input unit 37, information provision is performed. The CPU 31 of the device 30 accesses the activity status data and, for each position, corresponds to the selected display item among the activity statuses corresponding to the selected activity (here, “conveyed by cart”). The data of the action situation (here, “speed”) is extracted.

  Then, as shown in FIG. 12, the CPU 31 displays a heat map indicating the selected action and the degree of the action situation for each position extracted from the action situation data in the map information displayed on the map information display unit S1. Is generated and mapped to map information. Here, the heat map may be, for example, an average value of a degree of an action state related to a selected action at a certain position (for example, an average value of “speed” at which each worker “transports with a trolley”). The "speed" at which the "conveyance by trolley" is performed at the position may be equal to or greater than the predetermined value or the number of workers may be equal to or lower than the predetermined value.) Alternatively, it may be displayed such that the color of the portion corresponding to the position changes (for example, the color changes from a cool color to a warm color).

  When “number of people” is selected as a display item in the action input unit S2, the CPU 31 accesses the action situation data, and for each position, selects the action (here, “ The number of workers (the number of corresponding terminal device IDs) performing “transportation by trolley” during substantially the same “action time” (for example, a time zone within several seconds) is counted. Then, the CPU 31 may generate a heat map indicating the number of workers for each position and map the generated heat map to map information.

  When the selected display item is “stay time” or “work amount”, for example, the degree of the action status is, for example, “stay time” or “work It may be represented by the average value of the "amount", or may be represented by the number of workers whose "stay time" or "work amount" to "transport by trolley" at the position is equal to or more than a predetermined value or less than a predetermined value .

  Further, when an attribute to be displayed by the heat map (for example, “height” is “150 cm or more and less than 160 cm” and “sex” is “female”) is selected using the input unit 37 in the attribute input unit S3. The CPU 31 of the information providing device 30 accesses the worker data and extracts a terminal device ID associated with an attribute corresponding to the attribute selected in the attribute input unit S3. Next, the CPU 31 accesses the behavior situation data, and for each position, the behavior and the behavior state associated with the extracted terminal device ID, and the selected behavior (here, “ The data of the “transport”) and the action status (here, “speed”) are extracted. Then, the CPU 31 may generate a heat map using the extracted data, and map the generated heat map to map information.

  Here, the case where the display screen illustrated in FIGS. 11 and 12 is displayed on the display unit 36 of the information providing device 30 has been described as an example, but the present invention is not limited to this case. For example, the display screen illustrated in FIGS. 11 and 12 may be displayed on the terminal device 20. In this case, the terminal device 20 transmits, for example, a transmission request for information generated by the information providing device 30 for display to the information providing device 30 and uses the information received from the information providing device 30 as shown in FIGS. An exemplary display screen may be generated, and the generated display screen may be displayed on a display device (not shown) such as a monitor.

(5) Flow of Main Processing of Information Providing System of Present Embodiment Next, an example of the flow of main processing performed by the information providing system of the present embodiment will be described with reference to the flowchart of FIG.

  First, every time the measuring device 25 measures the worker's body condition (here, three-axis acceleration and three-axis angular velocity), the CPU 21 of the terminal device 20 stores information on the measured body condition in the RAM 23 or the storage device 24. Remember. Then, the CPU 21 of the terminal device 20 transmits the wireless signal to each communication device 10 via the communication interface unit 26 in a state including the information on the physical condition stored in the RAM 23 or the storage device 24. Next, when each communication device 10 receives a wireless signal from the terminal device 20, the communication device 10 transmits the data of the received wireless signal (including identification information of the terminal device 20 and information on the physical condition of the worker). , To the information providing device 30 via the communication network NW. On the other hand, when the CPU 31 of the information providing device 30 receives (acquires) the data of the wireless signal via the communication interface unit 38 (step S200), the CPU 31 relates to the physical condition of the worker included in the received data of the wireless signal. The information is stored in the RAM 33 or the storage device 34, for example.

  In step S200, each time the communication device 10 receives the wireless signal from the terminal device 20, the communication device 10 associates the value of the received signal strength of the wireless signal detected by the RSSI circuit with the data of the wireless signal. It may be transmitted to the information providing device 30 in a state. On the other hand, when the CPU 31 of the information providing apparatus 30 receives (acquires) the value of the received signal strength of the wireless signal in addition to the data of the wireless signal acquired in step S200 (step S202), the data of the received wireless signal (here, In this case, information on the terminal device ID and the physical condition, etc.) and the value of the received signal strength of the wireless signal are stored in association with each other, for example, in the acquired data shown in FIG.

  Next, for example, when the CPU 31 of the information providing apparatus 30 receives (acquires) information regarding the attribute of each worker from an external device via the communication interface unit 38 (step S204), the received information is, for example, shown in FIG. In the worker data shown in FIG.

  Next, the CPU 31 of the information providing apparatus 30 estimates the behavior of each worker based on the information on the physical condition of each worker acquired in step S200 (step S206). Here, for example, the CPU 31 performs machine learning using learning data as data indicating a correspondence between an action performed by the worker and a physical state of the worker at the time of performing the action. A probability model indicating the relationship between the physical state and the behavior of the worker may be generated. Then, the CPU 31 inputs the information on the physical state of each worker acquired in step S200 to the probability model, thereby performing the action of the worker (here, “walking”, “ Any of “transport”, “loading of luggage”, and “loading of luggage” may be estimated.

  The CPU 31 of the information providing device 30 estimates the position of the terminal device 20 based on the received signal strength of the wireless signal received by the communication device 10 (Step S208). Here, the CPU 31 selects at least two communication devices 10 including the communication device 10 having the highest received signal strength of the received wireless signal among the communication devices 10 provided at the plurality of positions, and selects the selected communication device 10. Whether there is a significant difference between the average values of the received signal strengths within a predetermined period, and if it is determined that there is a significant difference, the position of the communication device 10 having the highest received signal strength is determined by the terminal device. It may be estimated as 20 positions.

  Next, the CPU 31 of the information providing apparatus 30 determines an action status related to a predetermined action at one or more places in the region R based on the information on the action and the physical state of each worker and the position of the terminal device 20. The represented heat map is presented (step S210).

  In this way, based on the information on the behavior and the physical state of each worker and the position of the terminal device 20, a heat map representing the behavioral state related to the predetermined behavior in one or more places in the region R is presented. It becomes possible.

  As described above, according to the information providing system, the information providing method, and the program of the present embodiment, the position of the terminal device 20 estimated based on the information related to the received signal strength of the wireless signal received by the communication device 10, Based on the behavior of each worker estimated based on the information on the physical state of the worker and the information on the physical state of each worker, the behavioral state of the predetermined behavior at one or more locations in the region R is determined. Since the represented heat map is presented, for example, the stay time (behavior situation) of the worker in one or more places in the region R is not simply presented in the heat map, but is displayed in the one or more places. Since it is possible to present the stay time and the like when the worker is performing the predetermined action on the heat map, it is possible to easily grasp the action status regarding the predetermined action in the region R.

Hereinafter, a modified example of the above-described embodiment will be described.
(Modification 1)
In the present modification, the position estimating unit 45 generates the position estimating unit 45 based on the received signal strength of the radio signal transmitted or received by each of at least three of the communication devices 10 provided at a plurality of positions in the region R. A first vector having a distance between each of the at least three communication devices 10 and the terminal device 20 as an element, and a second vector corresponding to a predetermined position in the region R, It has a function of estimating the position of the terminal device 20 based on the degree of similarity between each of them and a second vector having a distance from the predetermined position as an element.

The function of the position estimating unit 45 in the present embodiment is realized, for example, as follows. In describing the function of the position estimating means 45 in the present embodiment, the worker provided with the terminal device 20 divides the region R along each of the x direction and the y direction as shown in FIG. It is assumed that the sub-region exists in any one of a plurality of sub-regions (in the example of FIG. 14, nine sub-regions R _{11 to} R ₃₃ ).

  First, the CPU 31 of the information providing device 30 transmits the wireless signal transmitted from the terminal device 20 to the plurality of communication devices 10 (in the example of FIG. 14, the plurality of communication devices A and B) based on the function of the second acquisition unit 42. , C, D), when the information on the received signal strength is received, each of the plurality of communication apparatuses A, B, C, D is connected to the terminal by using the obtained information on the received signal strength (for example, RSSI value). The distance from the device 20 is determined. Here, the distance between each of the plurality of communication devices A, B, C, and D and the terminal device 20 may be determined using the above equations (1) and (2).

Next, the CPU 31 of the information providing device 30 determines the distance between at least three of the plurality of communication devices A, B, C, and D (here, three of the communication devices A, B, and C) and the terminal device 20. A first vector u (shown in FIG. 16) as an element is generated. In the present embodiment, the first vector u is a three-dimensional vector. For example, assuming that the distance between the communication device A and the terminal device 20 is d ₁ , the distance between the communication device B and the terminal device 20 is d ₂ , and the distance between the communication device C and the terminal device 20 is d ₃ , _{A first} vector u having elements of ₁ , d ₂ and d ₃ is generated, and the values of d ₁ , d ₂ and d ₃ are stored in, for example, the RAM 23.

Then, CPU 31 of the information providing apparatus 30, for each of a plurality of sub-regions _R 11 _{to R 33,} a plurality of communication devices A, B, C, at least three of the D (in this case, the communication device A, B, the C 3) and generating a second vector v to the distance between each subregion _R 11 _{to R 33} elements (shown in FIG. 16). Here, the plurality of communication devices A, B, C, the distance between each and each subregion R ₁₁ to R ₃₃ in D may be measured in advance. Further, the CPU 31 may store each element of the second vector v corresponding to each of the plurality of sub-regions R _{11 to} R ₃₃ in, for example, the second vector data illustrated in FIG. In the second vector data, the distance between each of the plurality of communication devices A, B, C, and D and a predetermined position of each of the sub-regions R _{11 to} R ₃₃ (for example, the center position of the sub-region) is a plurality of sub-regions R _11. is data described for each to R _33. The second vector data is stored in the storage device 34 of the information providing device 30, for example.

Next, CPU 31 of the information providing apparatus 30, for each of a plurality of sub-regions _R 11 _{to R 33,} determine the similarity between the first vector u and a second vector v. Here, the similarity may be, for example, a cosine similarity, and the cosine similarity can be determined using the following equation (4). Further, the relationship between the first vector u, the second vector v, and the angle θ is shown as in FIG. In the example of FIG. 16 shows a first vector u, the relationship between the second vector v corresponding to the region R _11.

The maximum value of cos θ is 1, which indicates that the first vector u and the second vector v are oriented in the same direction. In addition, the minimum value of cos θ is −1, which indicates that the first vector u and the second vector v are in opposite directions. Further, when the value of cos θ is 0, it indicates that the first vector u and the second vector v are oriented in directions orthogonal to each other. For example, the value of each element of the first vector u (communication device A, B, a distance between each and the terminal device 20 of C), the second vector v (communication device A, B, C and each of the sub regions _{R 11} ~ as the value of each element of the distance) between the predetermined position of R ₃₃ is approximated, the higher the similarity vector.

Then, for example, the CPU 31 estimates a sub-region (for example, the sub-region R ₁₁ ) corresponding to the maximum similarity among the plurality of sub-regions R _{11 to} R ₃₃ as the position of the terminal device 20. Here, the case where the sub-region corresponding to the maximum similarity among the plurality of sub-regions R _{11 to} R ₃₃ is estimated as the position of the terminal device 20 has been described as an example, but the present invention is not limited to this case. For example, a sub-region whose similarity is equal to or greater than a predetermined value may be estimated as the position of the terminal device 20.

  As described above, according to this modification, the distance between each of the at least three communication devices 10 and the terminal device 20 is defined as an element based on the information on the received signal strength corresponding to each of the at least three communication devices 10. Is generated, for example, when the reception characteristic of one of the communication device 10 and the terminal device 20 that receives a wireless signal is different for each type and / or individual of the one device. At least, the first vector u is calculated based on the relationship between the received signal strength corresponding to each of the at least three communication devices 10 and the distance between each of the at least three communication devices 10 and the terminal device 20. It can be generated for each of the communication devices 10. Then, the position of the terminal device 20 is estimated based on the similarity between the first vector u and the second vector v having a distance between each of the at least three communication devices 10 and the predetermined position in the region R as an element. Therefore, for example, when the similarity between the first vector u and the second vector v is high, the predetermined position corresponding to the second vector v can be estimated as the position of the terminal device 20. Thus, instead of simply comparing the distance between the communication device 10 and the terminal device 20 based on the information regarding the received signal strength, the similarity between the first vector u and the second vector v By estimating the position, it is possible to accurately estimate the position of the terminal device 20 irrespective of the difference in reception characteristics of one of the communication device 10 and the terminal device 20 that receives a wireless signal.

(Modification 2)
In the above-described embodiment, a case has been described as an example where the second acquisition unit 42 acquires information on the received signal strength when each communication device 10 receives the wireless signal transmitted from the terminal device 20. Not limited. For example, the second acquisition unit 42 may acquire information on a received signal strength when the terminal device 20 receives a wireless signal transmitted from each communication device 10. Here, the terminal device 20 may be provided with an RSSI circuit that detects a value of a received signal strength when a wireless signal transmitted from each communication device 10 is received.

  In this case, each communication device 10 may request the terminal device 20 to transmit the value of the received signal strength of the wireless signal to each communication device 10. Then, the CPU 31 of the information providing apparatus 30 receives (acquires) the information (the value of the received signal strength of the wireless signal) transmitted from each communication apparatus 10 via the communication interface unit 38 as a function of the second acquisition unit 42. Then, the received information may be stored in the acquired data.

  As described above, according to the information providing system, the information providing method, and the program according to the present modification, it is possible to exhibit the same operational effects as those of the above-described embodiment.

(Modification 3)
In the above embodiment, the case where the behavior estimation unit 44 estimates the behavior classification of each worker by machine learning using the information on the physical state corresponding to each of the plurality of behavior classifications as learning data has been described as an example. However, it is not limited to this case. For example, when the information on the physical condition acquired based on the function of the first acquiring unit 41 satisfies the condition on the physical condition associated with a certain behavior class, the behavior estimation unit 44 May be estimated.

  The function of the behavior estimating means 44 in the present modified example is realized, for example, as follows. The CPU 31 of the information providing apparatus 30 uses a plurality of behavior classifications (here, “walking”, “conveyed by trolley”, “baggage”, for example) using information on the physical condition acquired based on the function of the first acquiring unit 41. It is determined whether or not a condition relating to a physical condition associated with one of the behavior classifications of “carrying out” and “loading of luggage” is satisfied. Here, in each of the plurality of behavior classifications, a condition (for example, acceleration and / or angular velocity is less than a predetermined value, or more than a predetermined value, or less than a predetermined value) related to a physical state estimated to be performing a corresponding action. Etc.). The data relating to the set conditions may be stored in, for example, the storage device 34 of the information providing device 30. Then, the CPU 31 may estimate a behavior classification that satisfies the set condition among the plurality of behavior classifications as the worker's behavior classification.

  As described above, according to the information providing system, the information providing method, and the program according to the present modification, it is possible to exhibit the same operational effects as those of the above-described embodiment.

(Modification 4)
In the above-described embodiment, a case has been described as an example in which the presenting unit 46 presents a heat map representing an activity status regarding a predetermined activity at one or more locations in the predetermined region R as information regarding an activity status of each worker. However, it is not limited to this case. The presenting means 46 may present various other information as information on the behavior of each worker, as described below.

  In this modification, when estimating the position of the terminal device 20 based on, for example, the function of the position estimating unit 45, the CPU 31 of the information providing device 30 accesses the activity situation data shown in FIG. The determined position and the behavioral status of the worker provided with the terminal device 20 may be stored in a state where the position is associated with the identification information (terminal device ID) of the terminal device 20. The behavior status data in FIG. 17 includes, for each piece of identification information (terminal device ID) of the terminal device 20 (that is, for each worker), the date and time (for example, the date and time when the measuring device 25 of the terminal device 20 measures the physical condition). Information), the position of the terminal device 20 at the date and time, and the activity status of the worker provided with the terminal device 20 (in the example of the figure, “activity classification”, “speed”, “stay time” , “The amount of work”, and “the number of steps”) are described in association with each other. The behavior status data of FIG. 17 is stored in a state where the behavior status of the worker is associated not with one or more positions in the region R but with each identification information (terminal device ID) of the terminal device 20. This is different from the behavior situation data of FIG.

  Hereinafter, some examples of the information on the behavioral status of each worker will be described. For example, the information on the behavior status may include information on at least one of a behavior classification, a movement ratio, a work amount, and the number of steps for each predetermined period. In this case, it is possible to easily grasp at least one of the behavior classification, the movement ratio, the amount of work, and the number of steps of each subject in the predetermined region R for each predetermined period.

  The function of the presentation means 46 in this case is realized as follows, for example. For example, the CPU 31 of the information providing apparatus 30 is selected when an instruction for displaying the activity status of the worker selected from the plurality of workers in the region R is input using the input unit 37. A display screen including information on the behavior of the worker is displayed on the display unit 36. This display screen may include, for example, a line graph representing the transition of the work amount of the selected worker for each predetermined period (one hour in the example of the figure) as shown in FIG. Then, as shown in FIG. 18B, a bar graph indicating the ratio of the selected worker to the movement and the stationary state (moving ratio) for each predetermined period (one hour in the example of the drawing) may be included.

  For example, when displaying the amount of work of the selected worker for each predetermined period (for example, one hour), the CPU 31 accesses the behavior status data of FIG. 17 and sets a terminal provided for the selected worker. The date and time associated with the identification information (terminal device ID) of the device 20 and the amount of work corresponding to the date and time are extracted, and the total amount of work is calculated for each predetermined period (for example, one hour), and the calculated amount of work is calculated. May be displayed as a graph on the display unit 36. As a result, it is possible to easily grasp the transition of the work amount of the selected worker every predetermined period. For example, when displaying the ratio (moving ratio) of the selected worker at a predetermined period (one hour in the example in the figure) of movement and rest, the CPU 31 accesses the behavior status data of FIG. Then, the date and time associated with the identification information (terminal device ID) of the terminal device 20 provided for the selected worker and the behavior classification corresponding to the date and time are extracted and moved every predetermined period (for example, one hour). (Here, it is assumed that all behavior classifications other than “still” are included as “movement”) and the ratio of stillness is calculated, and the calculated ratio of movement and stillness is graphed on the display unit 36. It may be displayed. Thereby, it is possible to easily grasp the movement ratio of the selected worker every predetermined period.

  Further, for example, when displaying the work classification of the selected worker for each predetermined period (for example, one hour), the CPU 31 accesses the behavior status data of FIG. 17 and is provided for the selected worker. The date and time associated with the identification information (terminal device ID) of the terminal device 20 and the behavior classification corresponding to the date and time are extracted, and the transition of the behavior classification for each predetermined period (for example, one hour) is graphed and displayed on the display unit 36. May be displayed, or the ratio of the behavior classification for each predetermined period (for example, one hour) may be calculated, and the calculated ratio of the behavior classification may be graphed and displayed on the display unit 36. Thereby, the behavior classification of the selected worker for each predetermined period can be easily grasped.

  Further, for example, when displaying the number of steps of the selected worker for each predetermined period (for example, one hour), the CPU 31 accesses the behavior situation data of FIG. 17 and is provided for the selected worker. The date and time associated with the identification information (terminal device ID) of the terminal device 20 and the number of steps corresponding to the date and time are extracted, the total number of steps for each predetermined period (for example, one hour) is calculated, and the total number of calculated steps is calculated. May be displayed as a graph on the display unit 36. Thereby, the number of steps of the selected worker for each predetermined period can be easily grasped.

  Further, the information on the behavioral status may include information on the stay time for each of one or more places in the predetermined region R. In this case, the staying time of each subject at each of one or more places in the predetermined region R can be easily grasped.

  The function of the presentation means 46 in this case is realized as follows, for example. For example, the CPU 31 of the information providing apparatus 30 is selected when an instruction for displaying the activity status of the worker selected from the plurality of workers in the region R is input using the input unit 37. A display screen including information on the behavior of the worker is displayed on the display unit 36. On this display screen, for example, as shown in FIG. 19 (a), one or more positions (positions A to position in the example of the figure) of the selected worker for each predetermined period (one hour in the example of the figure) are displayed. E) may include a bar graph representing the ratio of the staying time, or, as shown in FIG. 19B, a predetermined period (24 hours or a work period (for example, 9 A circle graph representing the ratio of the stay time at each position in the range from 17:00 to 17:00) may be included.

  For example, when displaying the ratio of the staying time of the selected worker in one or more positions (positions A to E) for each predetermined period (for example, one hour), the behavior status data shown in FIG. To extract the date and time associated with the identification information (terminal device ID) of the terminal device 20 provided for the selected worker, and the position and stay time corresponding to the date and time, and extract the information for a predetermined period (for example, 1 For each time), the ratio of stay time at each position (here, position A to position E) may be calculated, and the calculated ratio of stay time at each position may be graphed and displayed on the display unit 36. In addition, for example, when displaying the ratio of the staying time at each position within a predetermined period (for example, 24 hours) of the selected worker, the CPU 31 accesses the action situation data of FIG. The date and time associated with the identification information (terminal device ID) of the terminal device 20 provided to the worker, and the position and stay time corresponding to the date and time are extracted, and each position (for example, 24 hours) within a predetermined period (for example, 24 hours) is extracted. Then, the ratio of the stay time at the positions A to E) may be calculated, and the calculated ratio of the stay time at each position may be graphed and displayed on the display unit 36. Further, the CPU 31 displays, for example, the total of the staying time at one or more positions (positions A to E) of the selected worker for each predetermined period (for example, 1 hour or 24 hours) on the display unit 36. You may. Thereby, it is possible to easily grasp at which place (position) in the predetermined region R the selected worker has stayed well.

  Further, the information on the behavior situation may include information on the amount of work for each of one or more places in the predetermined region R. In this case, it is possible to easily grasp the workload of each subject at each of one or more locations in the predetermined region R.

  The function of the presentation means 46 in this case is realized as follows, for example. For example, the CPU 31 of the information providing apparatus 30 is selected when an instruction for displaying the activity status of the worker selected from the plurality of workers in the region R is input using the input unit 37. A display screen including information on the behavior of the worker is displayed on the display unit 36. On this display screen, for example, as shown in FIG. 20A, one or more positions (positions A to position A in the example of the figure) of the selected worker for a predetermined period (one hour in the example of the figure) are displayed. E) may include a bar graph representing the ratio of the amount of work, or as shown in FIG. 20B, a predetermined period (24 hours or a work period (for example, 9 A circle graph representing the ratio of the amount of work at each position in (17:00 to 17:00) may be included.

  For example, when displaying the ratio of the amount of work of the selected worker in one or more positions (positions A to E) for each predetermined period (for example, one hour), the behavior status data shown in FIG. To extract the date and time associated with the identification information (terminal device ID) of the terminal device 20 provided for the selected worker, and the position and the amount of work corresponding to the date and time, and extract the data for a predetermined period (for example, 1 For each time), the ratio of the amount of work at each position (here, positions A to E) may be calculated, and the calculated ratio of the amount of work at each position may be graphed and displayed on the display unit 36. In addition, for example, when displaying the ratio of the amount of work at each position within a predetermined period (for example, 24 hours) of the selected worker, the CPU 31 accesses the action situation data of FIG. The date and time associated with the identification information (terminal device ID) of the terminal device 20 provided for the worker, and the position and the amount of work corresponding to the date and time are extracted, and each position (for example, 24 hours) within a predetermined period (for example, 24 hours) is extracted. Then, the ratio of the amount of work at the positions A to E) may be calculated, and the calculated ratio of the amount of work at each position may be graphed and displayed on the display unit 36. Further, the CPU 31 displays on the display unit 36, for example, a total of the work amount of the selected worker at one or more positions (positions A to E) for each predetermined period (for example, 1 hour or 24 hours). You may. Thereby, it is possible to easily grasp at which place (position) in the predetermined region R the selected worker has been working well.

  Furthermore, the information on the behavior status may include a heat map representing the behavior status at one or more locations in the predetermined region R. In this case, the behavior status of each subject at each of one or more locations in the predetermined region R can be easily grasped by the heat map.

  The function of the presentation means 46 in this case is realized as follows, for example. The CPU 31 of the information providing apparatus 30 displays, for example, a display screen illustrated in FIG. 21 on the display unit when an instruction for displaying the behavior status of the plurality of workers in the region R is input using the input unit 37. 36 may be displayed. The display screen includes, for example, a map information display unit S1 for displaying map information of the region R. Further, on this display screen, for example, a drop-down menu (not shown) for selecting a period (for example, from 9:00 to 10:00, from 10 to 11 o'clock, etc.) corresponding to the action situation to be displayed by the heat map is displayed. ) May be included.

  Next, the CPU 31 accesses, for example, the behavior situation data of FIG. 10 and, for each position in the behavior situation data, data (the terminal device) including the behavior date and time within the period selected from the drop-down menu. ID, action classification, and action status). Then, based on the extracted data, the CPU 31 generates a heat map indicating the degree of the action situation at each position, and maps the generated heat map to the map information. Here, for example, the size of the circle represented as the heat map may be set to increase as the number of workers staying within the selected period increases. Further, for example, the color of a circle represented as a heat map may change according to the amount of work of each worker (for example, the color changes from a cold color to a warm color as the amount of work of each worker increases). Further, for example, the darkness of a circle represented as a heat map may be set so that the longer the worker stays at the corresponding position, the darker. This makes it possible to easily grasp the behavior of each worker at each location (position) within the selected period.

  Further, the information on the behavior situation may include information on the probability of movement from any location in the predetermined area R to another location. In this case, it is possible to easily understand how each subject moves in the predetermined area R.

  The function of the presentation means 46 in this case is realized, for example, as follows. For example, when an instruction for displaying the activity status of the worker selected from the plurality of workers in the region R is input using the input unit 37, the CPU 31 of the information providing apparatus 30 returns to FIG. An exemplary display screen may be displayed on the display unit 36. The display screen includes, for example, a map information display unit S1 for displaying map information of the region R.

  Next, the CPU 31 accesses the behavior status data of FIG. 17, and associates the date and time associated with the identification information (terminal device ID) of the terminal device 20 provided for the selected worker and the position corresponding to the date and time. Is extracted, and the number of times the position has changed from a predetermined position (for example, position A) to another position (for example, position B to position E) is counted for each extracted date and time. Then, the CPU 31 may calculate a movement probability from a predetermined position (for example, position A) to another position (for example, position B to position E), and map the calculated movement probability to map information. Further, the CPU 31 may map the number of times of movement from a predetermined position (for example, position A) to another position (for example, position B to position E) on the map information. In the example shown in FIG. 22, only the movement probability from the position A to each of the other positions B to E is shown, but the movement probability from each of the positions A to E to the other positions is shown. Is also good. Thereby, it is possible to easily grasp how the selected worker is moving in the predetermined region R.

  Next, an example of a flow of main processing performed by the information providing system of the present modification will be described with reference to the flowchart of FIG.

  First, the CPU 31 of the information providing apparatus 30 receives (acquires) wireless signal data via the communication interface unit 38 (step S300), similarly to step S200 of the flowchart of FIG. Is stored in, for example, the RAM 33 or the storage device 34.

  Next, the CPU 31 of the information providing apparatus 30 receives (acquires) the value of the received signal strength of the wireless signal in addition to the data of the wireless signal acquired in step S300 as in step S202 of the flowchart of FIG. Step S302), the data of the received wireless signal (here, information on the terminal device ID and the body condition, etc.) and the value of the received signal strength of the wireless signal are associated with the acquired data shown in FIG. 5, for example. Remember.

  Further, the CPU 31 of the information providing apparatus 30 estimates the position of the terminal device 20 based on the received signal strength of the wireless signal received by the communication device 10 as in step S208 of the flowchart of FIG. 13 (step S304).

  Further, the CPU 31 of the information providing apparatus 30 presents information on the physical condition of each worker and information on the behavior of each subject in the region R based on at least one of the positions of the terminal devices 20 ( Step S306).

  As described above, according to the information providing system, the information providing method, and the program of the present modified example, the position of the terminal device 20 estimated based on the information regarding the received signal strength of the wireless signal received by the communication device 10, Since information on the behavior of each subject in the region R is presented based on at least one of the information on the physical condition of the worker, for example, the subject in one or more places in the region R The staying time of the subject is not simply presented in the heat map, but the behavior of each subject in the region R (for example, how each subject behaves at one or more positions in the predetermined region). Information, etc.), it is possible to easily grasp the behavior status of each target person in the region R.

  Note that the program of the present invention may be stored in a computer-readable storage medium. The storage medium storing this program may be the ROM 22, the RAM 23, or the storage device 24 of the terminal device 20 shown in FIG. 2, or the ROM 32, the RAM 33, or the storage device of the information providing device 30 shown in FIG. 34. Further, for example, a CD-ROM or the like that can be read by being inserted into a program reading device such as a CD-ROM drive may be used. Further, the storage medium may be a magnetic tape, a cassette tape, a flexible disk, an MO / MD / DVD, or the like, or may be a semiconductor memory.

  The embodiments and the modified examples described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above-described embodiment and modified examples is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, in the above-described embodiment, a case has been described as an example where information regarding the physical condition of the worker is transmitted to the information providing device 30 via each communication device 10. However, for example, the terminal device 20 is connected to the communication network NW. In a case where the terminal device 20 is configured to be connectable, information on the physical condition of the worker may be directly transmitted from the terminal device 20 to the information providing device 30.

  In the above-described embodiment, the case where the measuring device 25 is provided in the terminal device 20 has been described as an example. However, for example, each of the measuring device 25 and the terminal device 20 may be provided as an individual device. . In this case, the measurement device 25 may be provided with an interface unit for transmitting measurement information to each communication device 10, the terminal device 20, or the information providing device 30.

  Furthermore, in the above-described embodiment, the case where one information providing device 30 is provided has been described as an example, but the present invention is not limited to this case. For example, a plurality of information providing apparatuses 30 may be provided. In this case, the operation content and processing result on any one of the information providing apparatuses 30 may be presented on another information providing apparatus 30 in real time. Alternatively, the processing result or the like in any one of the information providing apparatuses 30 may be shared among the plurality of information providing apparatuses 30.

  Furthermore, in the above-described embodiment, the case where the worker in the factory is the “subject” in the present invention has been described as an example. However, this “subject” may be any person that can be a target of the behavior analysis. For example, it may be a tourist, a customer, an elderly person, a disabled person, or the like.

  Further, in the above-described embodiment, a case has been described as an example in which a heat map representing an action situation related to a predetermined action of a worker having an attribute selected from a plurality of attributes is presented on the display screen. I can't. For example, a heat map indicating an action status regarding a predetermined action of a worker having a predetermined attribute among a plurality of attributes may be presented on the display screen.

  Furthermore, in the above-described embodiment, a case has been described as an example in which a heat map indicating an action status related to an action category selected from a plurality of action categories is presented on the display screen, but the present invention is not limited to this. For example, a heat map representing an action status related to a predetermined action category among a plurality of action categories may be presented on the display screen.

  In the embodiment described above, the information providing device 30 implements the functions of the first acquisition unit 41, the second acquisition unit 42, the third acquisition unit 43, the behavior estimation unit 44, the position estimation unit 45, and the presentation unit 46. However, the present invention is not limited to this configuration. For example, the functions of the units 41 to 46 are realized by a computer or the like (for example, a general-purpose personal computer or a server computer) communicably connected to the information providing apparatus 30 via a communication network such as the Internet or a LAN. It may be configured. Further, the function of at least one of the units 41 to 46 may be realized by the communication device 10 or the terminal device 20.

  The information providing system, the information providing method, and the program according to the present invention as described above can easily grasp the behavior status of each target person in a predetermined area, for example, business management for analyzing behavior of a worker or the like. Since it can be suitably used for systems and the like, its industrial applicability is extremely large.

10 Communication device 20 Terminal device 41 First acquisition unit 42 Second acquisition unit 43 Third acquisition unit 44 Behavior estimation unit 45 Position estimation unit 46 Presentation unit R Area

Claims (15)

First acquisition means for acquiring information on the physical condition of a plurality of subjects within a predetermined area;
Acquires information on received signal strength when the other receives a radio signal transmitted from one of a terminal device provided for each subject and a communication device provided at a plurality of positions in the predetermined area. Second acquisition means for performing
Position estimating means for estimating the position of the terminal device based on the received signal strength of the radio signal transmitted or received by the communication device,
Presentation means for presenting information about the behavior of each subject in the predetermined area based on at least one of the information about the physical condition of each subject and the position of the terminal device,
Information providing system equipped with.   The information providing system according to claim 1, wherein the information on the behavior status includes information on at least one of a behavior classification, a movement ratio, a work amount, and a number of steps for each predetermined period.   3. The information providing system according to claim 1, wherein the information on the behavioral status includes information on a stay time for each of one or more places in the predetermined area. 4.   The information providing system according to any one of claims 1 to 3, wherein the information on the behavioral status includes information on an amount of work for each of one or more places in the predetermined area.   The information providing system according to any one of claims 1 to 4, wherein the information on the behavior status includes a heat map representing the behavior status at one or more locations in the predetermined area.   The information providing system according to any one of claims 1 to 5, wherein the information on the action status includes information on a probability of movement from any location in the predetermined area to another location. A third acquisition unit configured to acquire information on an attribute of each subject;
The information providing system according to any one of claims 1 to 6, wherein the presenting unit presents information on a behavioral state of a subject having a predetermined attribute among the subjects.   The information providing system according to claim 7, wherein the predetermined attribute is an attribute selected from a plurality of attributes. A behavior estimating means for estimating a behavior classification of each subject based on information on a physical condition of each subject;
The presenting means, based on the information on the behavior classification and the physical state of each subject, and the position of the terminal device, generates a heat map representing a behavior state related to a predetermined behavior at one or more places in the predetermined area. The information providing system according to any one of claims 1 to 8, wherein the information is presented as information on the behavior of each subject.   The information providing system according to claim 9, wherein the predetermined action is an action selected from a plurality of action classifications.   The information providing system according to claim 9, wherein the behavior estimation unit estimates the behavior classification of each subject by machine learning using information on a physical state corresponding to each of the plurality of behavior classifications as learning data. .   The position estimating means selects at least two communication devices including the communication device having the highest received signal strength of the transmitted or received wireless signal among the communication devices provided at the plurality of positions, and selects the communication device of the selected communication device. Test whether there is a significant difference between the average values of the received signal strengths during a predetermined period, and if it is determined that there is a significant difference, the terminal device determines the position of the communication device having the highest received signal strength. The information providing system according to claim 1, wherein the information providing system estimates the position of the information.   The position estimating unit is configured to generate the at least three communication devices based on the reception signal strength of the radio signal transmitted or received by at least three communication devices among the communication devices provided at the plurality of positions. A first vector having a distance between each terminal and the terminal device as an element, and a second vector corresponding to a predetermined position in the predetermined region, wherein a distance between each of the at least three communication devices and the predetermined position is determined. The information providing system according to claim 1, wherein the position of the terminal device is estimated based on a degree of similarity to a second vector as an element. On the computer,
Obtaining information on the physical condition of a plurality of subjects within a predetermined area;
Acquires information on received signal strength when the other receives a radio signal transmitted from one of a terminal device provided for each subject and a communication device provided at a plurality of positions in the predetermined area. Steps to
Estimating the position of the terminal device based on the received signal strength of the wireless signal transmitted or received by the communication device,
Based on at least one of the information about the physical condition of each subject and the position of the terminal device, presenting information about the behavior of each subject in the predetermined area,
An information providing method for executing each step of the above. On the computer,
A function of acquiring information on the physical condition of a plurality of subjects within a predetermined area,
Acquires information on received signal strength when the other receives a radio signal transmitted from one of a terminal device provided for each subject and a communication device provided at a plurality of positions in the predetermined area. Function and
A function of estimating the position of the terminal device based on the received signal strength of the wireless signal transmitted or received by the communication device,
Based on at least one of the information about the physical condition of each subject and the position of the terminal device, a function of presenting information about the behavior of each subject in the predetermined area,
The program to realize.

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