WO2017154806A1 - Location detection system, location detection method, transmission device, location detection device, and facility equipment - Google Patents

Abstract

Provided is a location detection system (10) equipped with a management device (40), a transmission device (20), and a terminal device (30). The management device (40) stores building information model data (BIM data) relating to a building (60). The transmission device (20) is installed in the building (60) and transmits a wireless signal. The terminal device (30) receives the wireless signal. The location detection system (10) extracts from the management device (40) additional information that includes map information represented by the building information model data, and shows in the map information the location at which the terminal device (30) received the wireless signal. The map information is displayed on the monitor of the terminal device (30).

Description

POSITION SEARCH SYSTEM, POSITION SEARCH METHOD, TRANSMITTER, POSITION DETECTOR, AND EQUIPMENT DEVICE

The present invention relates to a position search system, a position search method, a transmission device, a position detection device, and equipment.

Conventionally, a technique for positioning a terminal device by a satellite positioning system such as a GPS (Global Positioning System) is known. The satellite positioning system is used for outdoor positioning. Further, a positioning technique that seamlessly performs positioning outdoors and indoors has been proposed (see, for example, Patent Document 1).

Patent Document 1 describes a positioning system including an indoor transmitter that is installed indoors and transmits a radio signal, and a mobile terminal that performs indoor positioning based on the distance between each of the plurality of indoor transmitters. In this positioning system, the radio signal transmitted by the indoor transmitter is compatible with the positioning satellite signal transmitted by the artificial satellite. In this positioning system, the mobile terminal is configured to perform indoor positioning using a radio signal transmitted by the indoor transmitter.

And as described in Patent Document 2, in recent years, a service has been proposed that measures the position information of a pedestrian and provides various information using the measured position information.

JP 2014-105993 A JP 2011-214834 A

By the way, as a service provided by using location information, a navigation system that performs route guidance is known. In this type of service, a technique for representing the measured position information on a map is used. Therefore, in order to provide this type of service, map information for expressing the map is required. Various map information is provided for outdoors, and it is possible for a service provider to provide services without creating map information. However, how to provide indoor map information is not described in either Patent Document 1 or Patent Document 2.

The present invention aims to provide a position search system that can easily provide map information in a building. Another object of the present invention is to provide a position search method in a position search system. Furthermore, this invention aims at providing the transmitter which comprises a position search system, and a position detection apparatus, and also this invention aims at providing the installation apparatus provided with a transmitter.

The position search system according to the present invention includes a management device, a transmission device, and a terminal device. The management device stores data of a building information model for a building. The transmitting device transmits a radio signal. The terminal device receives the radio signal. The location search system extracts additional information including map information represented by the data of the building information model from the management device, and represents the location where the terminal device has received the radio signal in the map information.

The position search method according to the present invention includes the following two steps. A 1st step is a step which extracts the additional information containing the map information expressed with the data of the said building information model from the management apparatus which has memorize | stored the data of the building information model about the building. A 2nd step is a step which represents the position of the terminal device which received the radio signal which the transmitting apparatus installed in the said building transmitted to the said map information.

The transmission device according to the present invention is arranged in a building and transmits a radio signal. The transmission device includes a control unit, a storage unit, and a high frequency circuit. The said control part extracts the additional information containing the map information expressed with the data of the said building information model from the management apparatus which has memorize | stored the data of the building information model about the said building. The storage unit stores the additional information extracted from the management device so that the position of the transmission device is included in the map information. The high-frequency circuit communicates bidirectionally with the terminal device. Further, the control unit always transmits a radio signal including identification information and not including the additional information, and when the terminal device requests transmission of the additional information, the control unit transmits the radio signal including the additional information. Send.

A position detection device according to the present invention communicates with a terminal device that receives a radio signal from a transmission device arranged in a building, and stores a building information model data for the building Extract information from. The position detection device includes a first processing unit and a second processing unit. When the first processing unit receives the identification information of the transmitting device included in the wireless signal from the terminal device, the first processing unit extracts additional information including map information represented by data of the building information model from the management device. . The second processing unit transmits the additional information to the terminal device. The first processing unit extracts the additional information from the management device so that the map information includes a position where the terminal device receives the radio signal.

The equipment according to the present invention is a main body unit that is installed in a building and provides a predetermined service to the building, and a transmission device as a component of a position search system, and is provided integrally with the main body unit. A transmission device.

According to the configuration of the present invention, there is an advantage that map information in a building can be easily provided.

FIG. 1 is an overall configuration diagram showing a position search system of Configuration Example 1. FIG. 2 is a block circuit diagram of a transmitting device that constitutes the position search system of Configuration Example 1. FIG. 3 is a perspective view of the entire building represented by shape information in the position search system. FIG. 4A is a plan view of a floor represented by shape information in the position search system. FIG. 4B is a perspective view of a room represented by shape information in the position search system as viewed from the inside. FIG. 5 is a sequence diagram of an operation in the position search system of Configuration Example 1. FIG. 6 is an overall configuration diagram showing the position search system of Configuration Example 2. FIG. 7 is an overall configuration diagram showing a position search system of Configuration Example 3. FIG. 8 is a block circuit diagram of a transmitter and its peripheral configuration that constitute the position search system of Configuration Example 3. FIG. 9 is an overall configuration diagram showing a position search system of Configuration Example 4. FIG. 10 is an overall configuration diagram illustrating a configuration example in which the position search system is used for monitoring. FIG. 11 is a perspective view illustrating an example of facility equipment including a transmission device that constitutes the position search system.

The configuration example described below relates to a position search system that searches for the position of a terminal device and a position search method in the position search system. In the following, a description will be given of a transmission device and a position detection device that constitute the position search system. Furthermore, the following description includes the description regarding the equipment provided with the transmission device.

The configuration example described below relates to a position search system that includes a terminal device as a mobile terminal that receives a radio signal and detects the position of the terminal device in a building. Moreover, below, the position search method in this position search system is disclosed. Furthermore, a transmitting device and a management device that constitute the position search system are disclosed. In addition, the equipment installed in the building and provided with the transmitting device is also disclosed.

The building is assumed to be a building that is not used for housing, such as an office building or a commercial building, but the building may be a collective housing or a detached house that is used for housing. Further, the building may be a building that constitutes a facility such as a school, a supermarket, a sports facility, a hotel, an art museum, a museum, a hospital, a warehouse, or a factory. Furthermore, even when a building does not belong to a general building such as a road, a bridge, etc. (that is, there are no roofs, columns, and walls), it is possible to adopt the technique described below. .

In the position search system, a terminal device receives a radio signal transmitted from a transmitting device installed in a building, and detects the position of the terminal device in the building based on information obtained from the radio signal received by the terminal device. .

In the following, “information” is used in the same meaning as “data”. However, “data” only needs to be expressed in a format that can be recognized by the apparatus without the user recognizing the meaning, but “information” is conditional on being expressed in a format in which the user recognizes the meaning. Therefore, “information” may be data itself in a format recognizable to the user, or may be created by processing data so that it can be recognized by the user.

In the position search system described below, the radio signal transmission medium is mainly radio waves, but the radio signal transmission medium may be selected from light, ultrasonic waves, and the like. The radio wave is assumed to be in the microwave frequency region, but may be in the millimeter wave frequency region. The light may be any of visible light, infrared light, and ultraviolet light. Ultrasound means an inaudible dense wave that propagates through a medium, and may be a continuous wave, a burst wave, or an isolated wave.

The radio signal transmits information that is clarified in the following configuration example. Further, the radio signal transmitted by the transmitting device is not necessarily a single transmission medium, and a plurality of transmission media may be used. When a plurality of transmission media are used for a radio signal, there are a configuration in which the same information is transmitted by a plurality of transmission media and a configuration in which different information is transmitted by a plurality of transmission media. Furthermore, even if there is only one type of radio signal transmission medium, the radio signal modulation scheme, the frame configuration for transmitting information, the radio signal transmission procedure, and the like are selected to suit the environment in which the radio signal is transmitted. Sometimes.

The terminal device can be carried by a building user and can receive a radio signal from the transmitting device. The precondition for the user of the building to enjoy the service provided by the position search system is to carry the terminal device. That is, in order for many users to enjoy the service, it is desirable that the terminal device is widely spread. Therefore, the terminal device is normally selected from general-purpose mobile terminals such as smartphones, tablet terminals, and notebook personal computers. However, the terminal device may be a dedicated device.

The position search system described below is an example where the building is a building having a plurality of floors. Further, a case where the wireless signal is a radio wave belonging to the microwave frequency region and has specifications corresponding to BLE (Bluetooth (registered trademark) Low Energy) will be described as an example. This type of radio signal is sometimes called a beacon. Further, the terminal device is assumed to be a smartphone.

Hereinafter, a configuration example of the present invention will be described in detail with reference to the drawings. In addition, all the structural examples demonstrated below show one preferable specific example of this invention. Accordingly, numerical values, components, arrangement and connection forms of components, steps (steps), order of steps, and the like shown in the following configuration examples are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following configuration examples, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are described as arbitrary constituent elements.

Each figure is a schematic diagram and is not necessarily shown strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same component.

(Configuration example 1)
Hereinafter, the position search system 10 of the configuration example 1 will be described with reference to FIGS. 1 to 5.

FIG. 1 is an overall configuration diagram showing a position search system 10 of Configuration Example 1. As shown in FIG. 1, the position search system 10 of this configuration example is configured such that a terminal device 30 that is a mobile terminal receives a radio signal transmitted by one transmitting device 20. Although only one transmitting device 20 may be installed in one building 60, in general, a plurality of transmitting devices 20 are installed in one building 60. In the example shown in FIG. 1, one transmission device 20 is installed on the ceiling 611 of one room 61 in a building 60. The transmitting device 20 is configured so that the terminal device 30 can receive a radio signal in the entire area of the room 61. That is, the transmission device 20 includes an omnidirectional antenna.

The location search system 10 includes a management device 40 and a location detection device 50 in addition to the transmission device 20 and the terminal device 30. The management device 40 stores data of a building information model related to the building 60. The position detection device 50 detects the position of the terminal device 30 in the building 60 based on information obtained from the radio signal received by the terminal device 30.

The position search system 10 performs different operations in the construction stage in which the transmitting device 20 is installed in the building 60 and the operation stage in which the terminal device 30 detects the position of the terminal device 30 by receiving a radio signal. However, in this configuration example, the position search system 10 does not operate at the construction stage. In other words, the position search system 10 performs a different operation that does not operate in the construction stage but operates in the operation stage. The position detection device 50 is configured as a computer server that can communicate with the terminal device 30, and the management device 40 is configured as a computer server that can communicate with the position detection device 50.

FIG. 2 is a block circuit diagram of the transmitting device 20 constituting the position search system 10 of the configuration example 1. As shown in FIG. 2, the transmission device 20 controls the operation of the high-frequency circuit 21 for transmitting a radio signal, the storage unit 22 that stores identification information for specifying the transmission device 20, and the operation of the transmission device 20. And a control unit 23. The storage unit 22 is configured by a rewritable nonvolatile memory, and identification information is written by the operation stage of the position search system 10. In addition to the configuration in which the storage unit 22 stores the identification information, the transmission device 20 may have a configuration in which the identification information is set by a DIP switch (DIP: Dual In-line Package), a jumper switch, or the like. When the identification information is fixedly set for each transmission device 20, the transmission device 20 may be configured such that the identification information is set before factory shipment. This type of configuration includes a configuration in which identification information is represented by a conductive pattern formed on a circuit board. In addition, the identification information should just be uniquely set to the transmitter 20 in the range of the building 60. Therefore, the identification information may be identification information uniquely set by the user in addition to identification information selected from an address of MAC address (Media Access Control Address), IPv6 (Internet Protocol Version 6), or the like.

The high frequency circuit 21 is configured to intermittently transmit radio signals at predetermined time intervals. The predetermined time interval is set to about 100 [ms], for example. Moreover, transmission of a radio signal is performed in about 1 [ms] time, for example. Therefore, the transmitter 20 has low power consumption, and can transmit a radio signal for several years even when a battery with a small capacity such as a button battery is used as a power source. However, here, a configuration is assumed in which power is supplied to the transmitting device 20 from indoor wiring corresponding to a commercial power source.

The terminal device 30 uses a smartphone in this configuration example. The terminal device 30 executes a function of receiving a radio signal from the transmission device 20 and a function of transmitting a radio signal to and from the position detection device 50 by executing an application program (so-called “application”). To do. That is, the operation of the terminal device 30 described below is realized by executing an application on the terminal device 30.

When the terminal device 30 receives the wireless signal from the transmission device 20, the terminal device 30 acquires the identification information of the transmission device 20. Thereafter, the terminal device 30 transmits a radio signal for requesting the position detection of the terminal device 30 to the position detection device 50. The radio signal requesting position detection includes the identification information of the transmission device 20 acquired by the terminal device 30. Here, it is desirable that the frequency of the radio signal transmitted from the terminal device 30 to the position detection device 50 is different from the frequency of the radio signal transmitted from the transmission device 20. Further, since the transmitting device 20 intermittently transmits wireless signals, the terminal device 30 transmits wireless signals to and from the position detecting device 50 during a period when the wireless signals from the transmitting device 20 are suspended. May be. In this case, the terminal device 30 may use the same frequency for each radio signal transmitted between the transmission device 20 and the position detection device 50.

As shown in FIG. 1, the position detection device 50 includes a high-frequency circuit 51 that transmits a radio signal to and from the terminal device 30 and a communication interface unit 52 that communicates with the management device 40. The communication path between the position detection device 50 and the management device 40 may be either a wireless communication path or a wired communication path. That is, the communication interface unit 52 may have either a configuration for performing wireless communication or a configuration for performing wired communication. Here, it is assumed that the communication interface unit 52 performs wired communication with the management device 40.

The position detection device 50 includes a processing unit 53 in order to detect the position of the terminal device 30 using information stored in the management device 40. The processing unit 53 includes a first processing unit 531 that detects the position of the transmission device 20 from which the terminal device 30 has received a radio signal, and a second processing unit 532 that creates information to be presented to the user.

The management device 40 stores data of a building information model related to the building 60. The architectural information model is a model that expresses a building in a virtual space constructed using a computer. Here, BIM (Building Information Modeling) is assumed as a building information model. Hereinafter, the data of the building information model is referred to as “BIM data”.

In BIM data, not only data representing the shape and dimensions of the building 60 but also data relating to members constituting the building 60 and data relating to equipment arranged in the building 60 are related to the building 60. Many types of data are integrated. That is, the BIM data represents not only data for building the building 60 but also a total of various data related to the building 60. Further, the BIM data may include data that enables simulation according to various conditions for the environment inside or outside the building 60.

The BIM data used by the position search system 10 of this configuration example includes the shape information representing the shape of the building 60, the position information representing the position in the virtual space, and the location in the building 60 corresponding to the position represented by the position information. And additional information for identification. Further, in the BIM data in this configuration example, the position information of the position where the transmission device 20 is installed in the building 60 is associated with the identification information for specifying the transmission device 20. In addition, when the equipment installed in the building 60 is integrally provided with the transmission device 20, the position information of the transmission device 20 can be substituted with the position information of the equipment.

The shape information is information expressed using, for example, a three-dimensional CAD system (CAD: Computer Aided Design), and is created using data representing the shape and dimensions of the building 60. If the shape information is used, it is possible to display a graphic representing the whole or part of the building 60 on the monitor screen. The shape information is hierarchized according to the shape of the building 60. The shape information is, for example, information representing the entire building 60 in front view or perspective view, information representing each of a plurality of floors of the building 60 in plan view or perspective view, and plan views of rooms included in one floor. Or the hierarchical structure hierarchized by the information shown with a perspective view is employ | adopted. The shape information in this example has a hierarchical structure in which the entire building 60 is hierarchized in the order of floor, room. The overall shape information of the building 60 represents the shape of the exterior of the building 60, and the floor shape information represents the internal shape of the building 60. Therefore, even if the building 60 has only one floor, the floor level is not omitted.

The shape information described above is an example, and the hierarchical structure of the shape information and the content of the shape information can be designed as appropriate. Moreover, about the content of shape information, you may perform simplification of a shape, coloring, etc. based on BIM data. Processing such as shape simplification and coloring can be automated by setting conditions, but it is also possible for a person to manually create shape information based on BIM data. An example in which the content of the shape information is displayed on the screen 31 of the terminal device 30 is shown in FIGS. 3, 4A, and 4B. FIG. 3 is a perspective view of the entire building 60 represented by shape information in the position search system 10. FIG. 4A is a plan view of the floor 61 represented by shape information in the position search system 10. FIG. 4B is a perspective view of the room 62 represented by shape information in the position search system 10 as viewed from the inside. The shape information includes, for example, data representing a perspective view of the entire building 60 as shown in FIG. 3, data representing a plan view of one floor 61 as shown in FIG. 4A, and view of the room 62 from the inside as shown in FIG. 4B. Data representing a perspective view. Of course, the content of the shape information shown in FIGS. 3 to 4B is an example.

The position information is represented by a two-dimensional coordinate value or a three-dimensional coordinate value in the virtual space. Here, since the building 60 includes a plurality of floors, not only information (two-dimensional coordinate values) in one floor but also information for distinguishing the floors is necessary. Therefore, in principle, three-dimensional coordinate values are used for the position information. However, when a floor can be specified, the position information within one floor can be represented by two-dimensional coordinate values. Further, when the building 60 is composed of only one floor, the position information can be represented by a two-dimensional coordinate value.

The additional information includes place information for specifying a place in the building 60 and map information including a place represented by the place information. The additional information has a hierarchical structure based on the hierarchical structure of the BIM data. The BIM data has a hierarchical structure in which the entire building 60 is the highest layer, the lower layer of the building 60 is a floor layer, and the lower layer of the floor is a room layer (including a corridor). . In this example, the BIM data has three layers and the room is the lowest layer. However, when the room is divided into smaller sections, the BIM data may have a hierarchical structure of four or more layers.

As the location information, for a building having a plurality of floors, a combination of a floor name and a room name is used. For example, the name of the floor is expressed by the number of floors, and the name of the room is expressed by the usage of the room. As a specific example, the location information is expressed in the form of “9th floor-hot water room”, “5th floor-office room”, and the like. The location information may include a section that is a lower hierarchy than the room. In this case, the location information is represented in a format such as “5th floor-office room-A section”, “5th floor-office room-B section”, and the like. In other words, the location information is information in which the building 60 is divided into a plurality of locations, and names are given to the divided locations. The location information is linked to the location information. That is, the name represented by the location information is associated with the range of coordinate values represented by the location information. The location information is associated with one coordinate value representing the location specified by the location information.

The map information is information that represents the location specified by the location information with a graphic of the building 60. That is, the map information is information in which shape information is linked to location information. In the map information, the shape information of the lowest hierarchy in the shape information is linked to the place specified by the location information. In addition to the shape information of the lowest hierarchy, the shape information of the upper hierarchy is made the same location information. It is tied. In the case of shape information including a plurality of figures (for example, a plan view and a perspective view) in a single hierarchy, the plurality of figures are all linked to the same location information.

Now, when the shape information is expressed in a hierarchical structure of 4 levels of building-5th floor-office-section A, and the place specified by the location information is "5th floor-office-section A" Suppose. Since the lowest hierarchy of the shape information in this example is “Fifth floor-office room-A section”, “fifth floor-office room-A section” is linked to the place specified by the place information. In the shape information, the upper layers including “Fifth Floor-Office-A Section” are “Fifth Floor-Office”, “Fifth Floor”, and “Building”. The shape information of these hierarchies is also linked to the place to be used.

If the above-described BIM data is stored in the management device 40 and the identification information of the transmission device 20 is known, the location information of the transmission device 20 is obtained. Then, the position information of the terminal device 30 obtained by the management device 40 is processed into information to be presented to the user and displayed on the monitor screen of the terminal device 30.

Hereinafter, operations of the position detection device 50 and the management device 40 will be described. As shown in FIG. 5, when the terminal device 30 receives the identification information from the transmitting device 20 (P11), the terminal device 30 delivers the identification information to the position detection device 50 (P12). When receiving the identification information of the transmission device 20 from the terminal device 30, the first processing unit 531 of the position detection device 50 requests the management device 40 to collate the identification information of the transmission device 20 (P13). In this configuration example, in the BIM data, the location information of the transmission device 20 is linked to the identification information of the transmission device 20, and the management device 40 is requested to collate the identification information of the transmission device 20 from the position detection device 50. Then, the position information of the transmitting device 20 associated with the identification information is extracted (P14).

When the management device 40 extracts the location information of the transmission device 20, the management device 40 extracts additional information using this location information (P14). The additional information includes location information and map information. That is, the management device 40 extracts location information and map information from the position information of the transmission device 20. The map information is information for displaying a place specified by the place information on the building 60 as a map, and is created from the shape information. The map information of the place specified by the place information is composed of the shape information of the lowest hierarchy corresponding to the place specified by the place information and the shape information of all the upper layers including the shape information of the lowest hierarchy. Has been. When extracting the map information from the position information, the management device 40 extracts the shape information of all layers related to the place specified by the place information as the map information.

As described above, when the management device 40 extracts additional information in response to a request from the first processing unit 531 of the position detection device 50, the management device 40 sends the extracted additional information to the position detection device 50 (P15). Further, when the second processing unit 532 of the position detection device 50 receives the additional information from the management device 40, the marks M1 and M2 (FIG. 3, FIG. 3) indicating the locations specified by the location information in the map information included in the additional information. 4A) is added (P16). Thereafter, the second processing unit 532 transmits the map information added with the marks M1 and M2 to the terminal device 30 (P17).

Here, the shape information of the lowest hierarchy corresponds to the location specified by the location information, and a spatial region narrower than the location information cannot be specified. Therefore, in the shape information of the lowest hierarchy, a mark is added at the representative position in the range indicated by the shape information. In this case, it is assumed that the shape information of the lowest hierarchy represents a plan view. As the representative position, the center position is usually selected, but it may be the position of the entrance.

Marks M1 and M2 are added to the representative position of the place specified by the place information for shape information that is not the lowest hierarchy. In the example shown in FIG. 3, in the perspective view showing the entire building 60, the floor on which the terminal device 30 that received the radio signal is present is hatched as a mark M <b> 1. In the example shown in FIG. 4A, a mark (M2) is attached to a place (room) where the terminal device 30 exists in the floor plan of the floor where the terminal device 30 that receives the radio signal exists.

When receiving the map information from the position detecting device 50, the terminal device 30 displays the map information on the monitor screen (P18). Here, since the map information extracted from the management apparatus 40 includes shape information of a plurality of layers, it is necessary to select the shape information to be displayed on the monitor screen. The process of selecting the shape information to be displayed on the monitor screen from the multi-layer shape information is performed by the second processing unit 532 of the position detection device 50 or the terminal device 30 that executes the application. The shape information that is first displayed on the monitor screen when the terminal device 30 receives the radio wave from the transmitting device 20 is determined by the second processing unit 532 or the terminal device 30 that executes the application. For example, the shape information initially displayed on the monitor screen by the terminal device 30 that has received the radio signal from the transmitting device 20 is the shape information of the lowest layer among the shape information of the plurality of layers included in the map information. It is determined as follows.

In a state where the shape information is displayed on the monitor screen of the terminal device 30, the terminal device 30 is required to display the shape information of the other layers among the shape information of the plurality of layers included in the map information on the monitor screen. A user operates an operation unit provided. In other words, by operating the operation unit in a state where the map information is displayed on the monitor screen of the terminal device 30, shape information of a layer different from the layer displayed on the monitor screen is displayed on the monitor screen. The In this configuration example, since the terminal device 30 is a smartphone, the operation unit is a touch panel or the like. When the terminal device 30 is a personal computer, the operation unit is a keyboard or a mouse. Note that, regardless of the level of the shape information displayed on the monitor screen, the shape information displayed on the monitor screen can be enlarged or reduced by operating the operation unit.

Here, the shape information of a plurality of layers included in the map information is held by the second processing unit 532 of the position detection device 50, and when the operation unit is operated in the terminal device 30, the shape information of the layer specified in the operation unit Is transmitted to the terminal device 30 by the second processing unit 532. Therefore, the terminal device 30 does not need to store the shape information of multiple layers included in the map information. That is, since the terminal device 30 does not store the shape information that is not displayed on the monitor screen, the storage capacity of the terminal device 30 is not wasted.

In addition, it is also possible to employ a configuration in which a process of transmitting shape information of a plurality of layers included in the map information from the second processing unit 532 to the terminal device 30 and storing the shape information of the plurality of layers in the terminal device 30 is possible. . When this configuration is adopted, it is not necessary to perform communication between the terminal device 30 and the position detection device 50 when changing the shape information displayed on the monitor screen by operating the operation unit. There is a possibility that the time required for switching displayed contents may be shortened.

As described above, in order to display the position of the terminal device 30 in the building 60 on the monitor screen of the terminal device 30, the terminal device 30 that has received the radio signal from the transmission device 20 transmits to the position detection device 50. The identification information of the device 20 is notified. Thereafter, the first processing unit 531 of the position detection device 50 requests the management device 40 to collate the identification information of the transmission device 20 with the BIM data, and the management device 40 adds information corresponding to the position information of the terminal device 30. Get information. Then, the second processing unit 532 of the position detection device 50 receives the location information and map information of the terminal device 30, adds the marks M1 and M2 to the map information, and adds the map information with the marks M1 and M2 added thereto to the terminal device 30. Is displayed on the monitor screen. Further, by operating the operation unit of the terminal device 30 in a state where the shape information of a specific layer included in the map information is displayed on the monitor screen, the shape information of other layers is displayed on the monitor screen. . Therefore, the user carrying the terminal device 30 can recognize the user's own position based on the position of the terminal device 30 in the building 60.

In the operation example described above, the additional information at the time when the terminal device 30 receives the radio signal from the transmitting device 20 is used, and the shape information is displayed as a still image on the monitor screen of the terminal device 30. That is, information is displayed on the screen of the monitor so that the terminal device 30 can know the position of the terminal device 30 at the time when the terminal device 30 receives the radio signal from the transmitting device 20. On the other hand, when used for route guidance or the like, it is necessary to update information displayed on the monitor screen of the terminal device 30 as the position of the terminal device 30 moves. Therefore, if the position of the terminal device 30 changes, the first processing unit 531 can be updated from the management device 40 so that the content of the shape information can be updated if necessary according to the position of the terminal device 30. Extract information. When only the positions of the marks M1 and M2 correspond to the position of the terminal device 30 without changing the shape information, the second processing unit 532 changes the positions of the marks M1 and M2.

For example, if the data of the lowest hierarchy in the shape information represents a perspective view seen from the inside of the room, the shape information of the lowest hierarchy will surely change if the position of the terminal device 30 changes. In this case, the first processing unit 531 extracts information from the management device 40. On the other hand, regarding the data representing the floor plan in the shape information, even if the position of the terminal device 30 changes, it is not necessary to change the shape information if the terminal device 30 exists on the same floor. Accordingly, the second processing unit 532 changes the position of the mark M2. When the terminal device 30 includes a gyro sensor or the like, a perspective view viewed from the inside of the room may be changed according to the orientation of the terminal device 30.

The management device 40 and the position detection device 50 include a processor that operates according to a program. That is, the management device 40 and the position detection device 50 include a computer as a main hardware element. This type of processor is selected from an MPU (Micro-Processing Unit) that requires a separate memory, a microcomputer (Microcontroller) that has a memory in a single device, and the like. Note that the management device 40 and the position detection device 50 may share hardware. That is, one processor may be used as both the management device 40 and the position detection device 50. Further, each of the position detection device 50 and the management device 40 may be a computer server. The computer server may be configured by a single computer, or may be configured such that a plurality of computers communicating through a computer network cooperate to behave as a single computer from a user. The computer server may be constructed as a cloud computing system.

The program is provided in a state of being stored in a ROM (Read Only Memory) of the memory, and can also be provided on a recording medium such as a computer-readable optical disk, an external storage device, or a memory card. The program may be provided through an electric communication line such as the Internet. A program provided through a storage medium or a telecommunication line is stored in a rewritable nonvolatile memory.

(Configuration example 2)
In the configuration example 1, the terminal device 30 receives the identification information of the transmission device 20 by a radio signal, and based on this identification information, the map information corresponding to the location where the terminal device 30 exists in the building 60 is extracted from the management device 40. is doing.

In the configuration example 2, the terminal device 30 measures the reception signal strength (RSSI: Received Signal Strength) indicator of the radio signal from the transmission device 20, and the application so that the received signal strength is delivered to the position detection device 50 in addition to the identification information. Is designing. The terminal device 30 gives an evaluation value of about three levels to the received signal strength of the radio signal. For example, the terminal device 30 classifies the received signal strength of the radio signal into three levels of “strong”, “medium”, and “weak”. In this example, each of “strong”, “medium”, and “weak” corresponds to the evaluation value.

FIG. 6 is an overall configuration diagram showing the position search system 10 of Configuration Example 2. When the terminal device 30 receives a radio signal from one transmitting device 20, the terminal device 30 transmits not only the identification information of the transmitting device 20 but also an evaluation value of the received signal strength of the wireless signal to the position detecting device 50. . The position detection device 50 receives the additional information related to the terminal device 30 from the management device 40 using the identification information of the transmission device 20 as in the configuration example 1.

Incidentally, as shown in FIG. 6, the position detection device 50 includes a third processing unit 533 for specifying a location where the terminal device 30 exists using the evaluation value of the received signal strength. The third processing unit 533 combines the additional information received from the management device 40 with the evaluation value of the received signal strength, so that the position where the terminal device 30 exists is identified by the location information included in the additional information. Narrow down to a range narrower than the range. That is, it is assumed that the received signal strength of the radio signal generally corresponds to the distance from the transmission device 20, and the range of the location specified by the map information is divided according to the distance from the transmission device 20.

Specifically, the third processing unit 533 of the position detection device 50 receives the identification information of the transmission device 20 and the evaluation value of the received signal strength from the terminal device 30, and the addition that the second processing unit 532 extracts from the management device 40. Receive map information included in the information. Further, the third processing unit 533 narrows down the spatial region in which the terminal device 30 exists based on the evaluation value of the received signal strength, and fits the spatial region narrowed down to the shape information of the lowest hierarchy in the map information. That is, the third processing unit 533 adds information for distinguishing the narrowed-down spatial area from other spatial areas to the shape information of the lowest hierarchy. When information is added to the shape information, when the shape information is displayed on the monitor screen of the terminal device 30, the narrowed-down spatial region is represented by a color different from the other spatial regions. Of course, the narrowed-down spatial area and other spatial areas may be distinguished not by color but by a pattern such as hatching.

When the third processing unit 533 narrows down the spatial region in which the terminal device 30 exists and adds information that distinguishes the narrowed spatial region from other spatial regions to the shape information, the third processing unit 533 2 Return to the processing unit 532. When receiving information from the third processing unit 533, the second processing unit 532 adds marks M1 and M2 (see FIGS. 3 and 4A) to the representative positions of the spatial regions narrowed down by the third processing unit 533. That is, in Configuration Example 1, it was impossible to put a mark indicating the position of the terminal device 30 in a range narrower than the shape information of the lowest hierarchy constituting the map information. It is possible to mark a spatial region narrower than the spatial region represented by the shape information of the lower hierarchy.

By the way, if the transmitting device 20 has no directivity in the direction in which the radio signal is transmitted, the region divided by the received signal strength of the radio signal is ideally circular or annular. Therefore, in the case of an annular region, even if it is the range of the place specified by the map information, positions that are separated from each other may be included in the same region. For example, if the transmitting device 20 is arranged at the center of the ceiling 611 of the room, the peripheral portion of the room may be included in the same region regardless of the location.

Therefore, when using the received signal strength information to identify the position of the terminal device 30, it is desirable to provide directivity in the direction in which the radio signal is transmitted from the transmitting device 20. Further, the radio signal may be divided into a plurality of directions in which the radio signal is transmitted, and information that enables identification of the divided directions may be included in the radio signal. In addition, in the range of the place specified by the place information, when the transmitting device 20 can be arranged at the end position, it can be divided into regions according to the distance from the end of the place range.

Further, it is expected that the radio signal is reflected by the building 60. If the radio signal is reflected, there is a possibility that the received signal strength of the terminal device 30 does not correspond to the distance from the transmitting device 20. Therefore, the received signal strength at the terminal device 30 corresponding to the positional relationship with the transmission device 20 may be measured in advance, and the measured information may be stored in the position detection device 50. If such information is registered in the position detection device 50, the terminal device 30 can know the relative position with respect to the transmission device 20 that transmitted the radio signal based on the received signal strength of the radio signal received by the terminal device 30. It becomes possible to obtain the position of 30 with higher accuracy. Other configurations are the same as those of the configuration example 1.

In the configuration example 2, not only the identification information of the transmission device 20 but also information on the received signal strength of the radio signal at the terminal device 30 is included in the radio signal, so the amount of information for determining the position of the terminal device 30 is configured. More than Example 1. As a result, the position of the terminal device 30 can be obtained in a range narrower than the range of the location specified by the location information.

In the configuration example described above, it is a condition that the terminal device 30 receives a radio signal from one transmitting device 20, but depending on the arrangement of the transmitting device 20, one terminal device 30 may include a plurality of transmitting devices. There is a possibility of receiving a radio signal from 20. In this case, the terminal device 30 distinguishes the plurality of transmission devices 20 that are receiving the radio signal by the identification information, and notifies the position detection device 50 of the received signal strength of each of the plurality of transmission devices 20.

Here, when there is a possibility that one terminal device 30 receives radio signals from a plurality of transmission devices 20, that is, when the transmission devices 20 are arranged at a relatively close distance, a plurality of transmission devices 20 are provided. It is necessary to prevent interference of radio signals transmitted by the. For this reason, the plurality of transmitting devices 20 arranged at relatively close distances have different timings for transmitting radio signals. In order to vary the timing for transmitting radio signals, a configuration is employed in which a plurality of transmitters 20 intermittently transmit radio signals and irregularly change the timing for transmitting radio signals. In this case, even if the period during which the plurality of transmission devices 20 transmit wireless signals temporarily overlaps, the terminal device 30 has a period in which the wireless signals from the plurality of transmission devices 20 can be individually received.

In order for the plurality of transmission devices 20 to transmit radio signals at different timings, the plurality of transmission devices 20 may be configured as follows. That is, the plurality of transmission devices 20 may be configured to transmit radio signals at different time intervals. In addition, the plurality of transmission devices 20 may be configured to arbitrate the timing for transmitting the radio signal. Alternatively, a device that supervises the operation of the plurality of transmission devices 20 may adjust the timing of transmitting a radio signal from the transmission device 20. When the radio signal is a radio wave, a configuration may be employed in which a plurality of transmitting devices 20 transmit radio signals having different frequencies in a frequency range that the terminal device 30 can receive. In other words, the transmitting device 20 may select a channel for transmitting a radio signal from a plurality of channels having different frequencies, and the terminal device 30 may identify the channel of the radio signal.

As described above, when receiving radio signals from a plurality of transmitting devices 20, the space area where the terminal device 30 exists is a space in which the terminal device 30 can receive the radio signals respectively transmitted by the plurality of transmitting devices 20. Among the areas, the spatial areas overlap with each other. Therefore, it is possible to narrow down the position where the terminal device 30 exists, compared to the case where the terminal device 30 receives a radio signal from only one transmitting device 20.

In the configuration example 2, since the terminal device 30 evaluates the received signal strength of the radio signal, when the terminal device 30 receives radio signals from a plurality of transmitting devices 20, the received signal strength information is combined. When used, the position of the terminal device 30 can be further narrowed. For example, the terminal device 30 receives radio signals from three transmitters 20, and the received signal strengths of the radio signals from the three transmitters 20 are “weak”, “medium”, and “weak”. Assume. In this example, the spatial region in which the terminal device 30 exists is relatively far from the first and third transmitting devices 20 among the spatial regions in which the wireless signals from the three transmitting devices 20 can be received. It can be said that it is a space area relatively close to the second transmitter 20. And it can be said that this space area is the same distance from the 1st and 3rd transmitter 20.

That is, when the third processing unit 533 of the position detection device 50 receives the identification information and the received signal strength of each of the plurality of transmission devices 20 from the terminal device 30, the information extracted by the second processing unit 532 from the management device 40. Use to narrow down the space area in which the terminal device 30 exists.

By the way, when the terminal device 30 receives a radio signal from a plurality of transmission devices 20, the second processing unit 532 may extract additional information corresponding to each of the plurality of transmission devices 20. In this case, the shape information of the lowest layer included in the map information extracted by the second processing unit 532 may be different for each transmission device 20. However, since the distance between the plurality of transmitting devices 20 from which the terminal device 30 is receiving radio signals is relatively small, other shapes other than the shape information of the lowest hierarchy among the shape information included in the map information are included. Information is expected to be common.

For example, if a plurality of transmission devices 20 are installed in one room and the section into which the room is divided is the lowest hierarchy of the map information, the map information extracted by the second processing unit 532 The shape information of the lowest hierarchy may be different. However, the shape information one level higher than the shape information of the lowest level corresponds to a room. Therefore, there is a high possibility that the shape information that is the second hierarchy from the bottom of the map information extracted by the second processing unit 532 matches. In this case, the second processing unit 532 extracts common shape information from a plurality of pieces of map information obtained based on radio signals from a plurality of transmission devices 20, and the lowest hierarchy among the common shape information. Is transferred to the third processing unit 533.

The processing performed by the third processing unit 533 is the same as the case where the terminal device 30 receives a radio signal from one transmitting device 20. That is, information for displaying a mark at a representative position in the space area where the terminal device 30 exists is added to the shape information delivered from the second processing unit 532. In this case, the shape information initially displayed on the monitor screen of the terminal device 30 is the shape information of the lowest layer among the shape information extracted in common from the radio signals of the plurality of transmitting devices 20.

As described above, when the terminal device 30 receives a radio signal, the position of the terminal device 30 is specified using not only the identification information of the transmission device 20 but also the evaluation value of the received signal strength. Thus, the position of the terminal device 30 can be obtained with high accuracy. In particular, when the terminal device 30 receives radio signals from a plurality of transmitting devices 20, the range in which the terminal device 30 exists can be obtained more accurately.

(Configuration example 3)
In the configuration example 1 and the configuration example 2, the location information and identification information of the transmission device 20 are registered as BIM data in the management device 40, and the management device 40 adds the BIM data in response to a request from the location detection device 50. A configuration for extracting information is adopted. Therefore, when the terminal device 30 receives the radio signal from the transmission device 20, the terminal device 30 makes a request for the position where the terminal device 30 exists to the position detection device 50.

FIG. 7 is an overall configuration diagram showing the position search system 10 of Configuration Example 3. FIG. 8 is a block circuit diagram of the transmitter 20A constituting the position search system 10 of Configuration Example 3 and its peripheral configuration.

As shown in FIG. 7, the configuration example 3 is a configuration in which the transmission device 20A communicates with the management device 40, and does not include the position detection device 50. As shown in FIG. 8, the transmission device 20 </ b> A includes an interface unit 24 for communicating with the management device 40 in addition to the high-frequency circuit 21, the storage unit 22, and the control unit 23. The high-frequency circuit 21 communicates bidirectionally with the terminal device 30.

The storage unit 22 stores not only the identification information but also additional information received from the management device 40 through the interface unit 24. The interface unit 24 communicates with the management apparatus 40 through a wired communication path or a wireless communication path. The management apparatus 40 collates identification information set in advance in the transmission apparatus 20A with the BIM data, thereby transmitting the transmission apparatus 20A. Extract additional information about. Similar to the configuration example 1, the additional information includes the location information of the part where the transmission device 20A is installed and the map information, and the map information includes a plurality of layers of shape information. Further, the shape information includes information of marks M1 and M2 (see FIGS. 3 and 4A) corresponding to the position of the transmitting device 20A.

The additional information is written in the storage unit 22 during a period until the operation of the position search system 10 is started after the transmission device 20A is installed. The timing for reading the additional information from the management device 40 may be instructed from either the transmission device 20A or the management device 40. For example, the terminal device 30 is instructed to transmit the additional information to the transmitting device 20A, and the transmitting device 20A reads the additional information from the management device 40 and stores it in the storage unit 22. Further, the identification information is specified for the transmitting device 20A that the worker has confirmed installation, and the additional information is transmitted from the management device 40 to the transmitting device 20A, and the additional information is stored in the storage unit 22 of the transmitting device 20A. You may comprise. The control unit 23 controls the operation of storing the additional information in the storage unit 22. When the location of the transmitting device 20A is changed or when the transmitting device 20A is additionally installed, additional information is stored in the storage unit 22 of the transmitting device 20A.

The control unit 23 of the transmission device 20A in which the additional information is stored in the storage unit 22 controls the high-frequency circuit 21 so as to transmit a radio signal intermittently at all times. This radio signal includes not only the identification information of the transmitting device 20A but also the location information of the additional information and the shape information of the lowest layer included in the map information. Although the amount of data included in this wireless signal increases as compared with the case where only the identification information is included, it is possible to transmit the wireless signal at a practical time interval. In this configuration, it is possible to change the shape information displayed on the monitor screen by requesting the transmitting device 20A from the terminal device 30 to transmit the shape information of another layer in the map information.

Even with the above-described operation, the transmitting device 20A can transmit a radio signal at a practical time interval, but a radio signal including additional information is transmitted rather than transmitting a radio signal not including additional information. The power consumption of the transmitting device 20A increases when transmitting. Therefore, if a radio signal including additional information is transmitted during a period in which the terminal device 30 is not receiving a radio signal, power consumption increases.

In order to reduce power consumption, the transmitting device 20A may adopt a configuration in which only the identification information is always transmitted using a radio signal. In this configuration, when receiving the radio signal from the transmitting device 20A, the terminal device 30 requests the transmitting device 20A to transmit additional information using the identification information included in the radio signal. Then, the transmission device 20A requested to transmit the additional information from the terminal device 30 transmits the additional information stored in the storage unit 22 to the terminal device 30. Here, the additional information transmitted first from the transmitting device 20A in response to the request from the terminal device 30 is the location information and the shape information of the lowest hierarchy. That is, the information received by the terminal device 30 is the location information and the shape information of the lowest hierarchy, as in the configuration example 1.

As described above, the point to which the terminal device 30 requests and receives additional information is the position detection device 50 in the configuration example 1, but the transmission device 20A in the configuration example 3. Other configurations and operations of the configuration example 3 are the same as those of the configuration example 1. Similarly to the configuration example 2, the technology of the configuration example 3 can be applied to a configuration in which the terminal device 30 receives radio signals from the plurality of transmission devices 20A and narrows down the position of the terminal device 30. In this case, the same process as the third processing unit 533 of the position detection device 50 may be added to the application that operates the terminal device 30.

(Configuration example 4)
In the configuration example 3, the transmission device 20A communicates with the management device 40, and the storage unit 22 of the transmission device 20A stores additional information in addition to the identification information. The identification information is uniquely set in the transmitting device 20A within the range of the building 60, and is selected from a MAC address, an IPv6 address, identification information uniquely set by the user, and the like. The MAC address, IPv6 address, and the like are set before the transmitter 20 is shipped from the factory. On the other hand, when adopting identification information uniquely set by the user, it is necessary to individually set identification information in the transmitting device 20A. If the identification information set before the factory shipment of the transmitting device 20A is adopted, the work of associating the position information of the transmitting device 20A with the identification information is required. Take it.

FIG. 9 is an overall configuration diagram showing the position search system 10 of Configuration Example 4.

In Configuration Example 4, as shown in FIG. 9, a technique is described in which a measuring device 70 that measures the position of the transmitting device 20, 20 </ b> A is arranged and the position information measured by the measuring device 70 is associated with the transmitting device 20, 20 </ b> A. The technology of this configuration example is applicable to both the transmission device 20 of the configuration example 1 and the configuration example 2 and the transmission device 20A of the configuration example 3. The transmitting devices 20 and 20A can transmit a radio signal after being installed in the building 60, and can communicate with the terminal device 30 similarly to the configuration example 3. In the configuration example 4, the terminal device 30 can communicate with the management device 40.

The terminal device 30 can select to select a preparation operation for associating position information with the identification information of the transmission devices 20 and 20A in the preparation stage, not the original operation in the operation stage of detecting the position in the building 60. That is, the terminal device 30 can perform an operation for associating the location information and the identification information of the transmission devices 20 and 20A before use. The operation of the terminal device 30 is determined by an application that operates on the terminal device 30.

However, the terminal device 30 that originally performs the operation and the terminal device 30 that performs the preparatory operation may be the same or different. That is, the terminal device 30 that performs the original operation and the terminal device 30 that performs the preparatory operation can be combined. However, as illustrated in FIG. 9, the terminal device 30 that performs the preparatory operation performs the original operation as a dedicated setting device 30A. You may have a different structure from the terminal device 30 to perform. In other words, the terminal device 30 that originally performs the operation does not need to be used as the setting device 30A. If the dedicated setting device 30A is provided, the user of the terminal device 30 that performs the original operation and the setting device 30A are operated. It becomes possible to distinguish the worker. In this configuration example, a case where the terminal device 30 is used for both the preparation operation and the original operation will be described.

The measuring device 70 is an example of a device called a laser scanner. However, if a three-dimensional coordinate value can be measured, the three-dimensional coordinate value is measured according to a principle such as a time-of-flight method, a phase shift method, or a stereo image method. It may be configured to. Here, in order to obtain the position information of the transmitting devices 20 and 20A installed in the room with the laser scanner, the laser scanner is installed on the floor, and the radiation direction of the laser light so that the beam-shaped laser light is scanned over the entire room. Take the case of changing as an example.

The head that emits laser light rotates in the horizontal direction, and scans the laser light in the vertical direction during rotation. The laser scanner measures the distance from the head to the object by obtaining information corresponding to the time from when the laser light is emitted until the reflected light is received. Therefore, a three-dimensional coordinate value in the coordinate system defined for the laser scanner is obtained for the object from the direction of laser light irradiation and the distance to the object.

Here, the position of the object in the virtual space can be obtained by matching the coordinate system defined for the laser scanner with the coordinate system of the virtual space representing the building 60 by the BIM data. That is, after installing the transmission devices 20 and 20A on the building 60, the measurement device 70 measures the position of the transmission devices 20 and 20A and collates the measurement result with the BIM data stored in the management device 40. The information can be associated with the position information of the transmission devices 20 and 20A included in the data.

In addition, since the measurement value output from the measurement device 70 includes data of various objects existing in the room, the measurement value (coordinate value) of the transmission devices 20 and 20A is specified from the measurement value output from the measurement device 70. There is a need to. The measurement values (coordinate values) of the transmission devices 20 and 20A are recognized by applying an appropriate determination condition to the measurement values output from the measurement device 70, for example. As the determination condition, the shape of the transmission devices 20 and 20A, the arrangement of the transmission devices 20 and 20A in a room, and the like are used. The measurement values of the transmission devices 20 and 20A may be specified by the user from the measurement values measured by the measurement device 70, instead of being automatically extracted according to the determination conditions.

Now, it is assumed that the identification information is set in the transmission device 20 or 20A before the shipment of the transmission device 20 or 20A. Further, the terminal device 30 is in a state of performing a preparation operation. When the terminal device 30 receives a radio signal from the transmission devices 20 and 20A, the terminal device 30 extracts identification information. In addition, the terminal device 30 acquires the position information of the transmission devices 20 and 20A measured by the measurement device 70. The position information of the transmitting devices 20 and 20 </ b> A can be input by the user to the terminal device 30 as the measurement value of the measurement device 70. The terminal device 30 is connected to an interface unit that outputs the measurement value of the measurement device 70. Thus, it is desirable to acquire the position information of the transmission devices 20 and 20A.

The terminal device 30 communicates with the management device 40 after acquiring the identification information of the transmission devices 20 and 20A from the radio signal and the position information of the transmission devices 20 and 20A from the measurement values of the measurement device 70. Upon receiving the location information and identification information of the transmission devices 20 and 20A from the terminal device 30, the management device 40 adds information that associates the location information and identification information of the transmission devices 20 and 20A to the BIM data. Thereafter, the management device 40 stores additional information in the storage unit 22 of the transmission devices 20 and 20A. The subsequent operation is the same as that of the configuration example 3. Therefore, if the terminal device 30 is operating with an originally operating application, the transmitting devices 20 and 20A can provide location information and map information to the terminal device 30 through wireless signals.

In the above-described operation example, the terminal device 30 associates the identification information included in the radio signals from the transmission devices 20 and 20A with the location information of the transmission devices 20 and 20A obtained by the measurement device 70. On the other hand, if the adapter device for communicating with the transmission devices 20 and 20A is connected to the measurement device 70, the location information of the transmission devices 20 and 20A obtained by the measurement device 70 is transmitted by radio signals to the transmission devices 20 and 20A. Can be notified. In this operation example, there is a convenience that the terminal device 30 does not need to be operated in the preparation operation. Further, instead of sending the location information of the transmission devices 20 and 20A from the measurement device 70 to the management device 40 via the terminal device 30, the location information of the transmission devices 20 and 20A obtained by the measurement device 70 is sent to the management device 40. A direct sending configuration may be employed.

When the configuration in which the location information of the transmission devices 20 and 20A is acquired using the measurement device 70 is adopted, even if the location information of the transmission devices 20 and 20A is not included in the BIM data, the transmission device 20 is included in the BIM data. , 20A position information can be added. That is, even if the transmission devices 20 and 20A are installed after the construction of the building 60, the position of the terminal device 30 can be represented in the map information using the radio signal from the transmission devices 20 and 20A.

By the way, when setting the identification information of the transmission devices 20 and 20A after the transmission devices 20 and 20A are installed in the building 60, the terminal device 30 transmits a radio signal immediately after the transmission devices 20 and 20A are installed in the building 60. Even if it is received, the identification information of the transmitting devices 20 and 20A cannot be obtained. Therefore, the terminal device 30 that is operating with the application for the preparation operation is used to set the identification information of the transmission devices 20 and 20A. That is, the terminal device 30 operates so as to transmit a radio signal to the transmission devices 20 and 20A and set identification information in the transmission devices 20 and 20A in the preparation operation.

Similarly to the above-described operation example, the transmitter 20 and 20A is notified of the position information of the transmitters 20 and 20A measured by the measuring device 70 by radio signals. With such an operation, it is possible to give identification information and position information from the terminal device 30 to the transmission devices 20 and 20A. Next, the location information is transmitted from the transmission device 20, 20A to the management device 40, the location information of the transmission device 20, 20A in the BIM data stored in the management device 40, and the location received from the transmission device 20, 20A Match information.

When both pieces of position information match within the error range, the management apparatus 40 recognizes the transmission apparatuses 20 and 20A that have transmitted the position information to the management apparatus 40 as transmission apparatuses 20 and 20A registered as BIM data. The additional information is transmitted to the transmitting devices 20 and 20A. Note that the fact that two pieces of position information are matched within an error range means that the distance between the two pieces of position information represented by coordinate values is smaller than a predetermined threshold value.

Other configurations and operations of the configuration example 4 are the same as those of the configuration example 3. In the configuration example 1 or the configuration example 2, the technology of the configuration example 4 can be applied as long as the transmission devices 20 and 20A can communicate with the terminal device 30 and the management device 40.

Note that the relationship between the transmitting devices 20 and 20A and the terminal device 30 that constitute the position search system 10 is such that the transmitting devices 20 and 20A are connected to the terminal device 30 like a relationship between an RFID (Radio Frequency Identifier) reader and a tag. It may be configured to read information. In this case, it is necessary to configure the information obtained by the terminal device 30 based on the radio signal received from the transmission device 20, 20 </ b> A so that the transmission device 20, 20 </ b> A reads from the terminal device 30.

In Configuration Example 3 and Configuration Example 4, the transmission device 20 communicates with the management device 40, and the transmission device 20 stores additional information. Therefore, the additional information to be stored in the transmission device 20 needs to be selected by the management device 40. That is, it is desirable that the management device 40 has the same function as the second processing unit 532 of the position detection device 50 described in the configuration example 1 and the configuration example 2. In other words, the management device 40 has a function of extracting additional information stored in the transmission device 20 from the BIM data. However, this function may be provided not in the management device 40 but in the transmission device 20, and may be provided in a dedicated device separately from the management device 40.

Incidentally, all of the above-described configuration examples are configured to display the position of the terminal device 30 on the monitor screen of the terminal device 30. That is, it is assumed that the user carrying the terminal device 30 confirms the location where the user exists on the monitor screen. On the other hand, it is possible to use the above-described technique for other users to monitor the position of the person carrying the terminal device 30.

FIG. 10 is an overall configuration diagram showing a configuration example in which the position search system 10 is used for monitoring.

For example, the additional information extracted from the management device 40 by the position detection device 50 of the configuration example 1 and the configuration example 2 or the additional information received by the terminal device 30 from the transmission devices 20 and 20A of the configuration example 3 and the configuration example 4 is shown in FIG. As described above, the data can be transmitted to the monitoring device 80 provided separately from the terminal device 30. The monitoring device 80 employs a computer having a monitor, such as a personal computer, a tablet terminal, and a smartphone, as a hardware configuration. The monitoring device 80 has the same function as the terminal device 30 in that the content of the additional information can be displayed on the monitor and the shape information layer included in the map information can be selected.

However, the monitoring device 80 has a function different from that of the terminal device 30 in that the positions of the plurality of terminal devices 30 can be simultaneously displayed on the monitor screen. With this configuration, it is possible to know the number (approximate number) or distribution of the terminal devices 30 existing in the building 60, and monitor the movement of the person by monitoring the position of the terminal device 30. Is possible. If the movement of a person is monitored, it can be used for assistance for guiding an evacuee to an appropriate guidance route when evacuating from the building 60. Further, it can be used for guiding to a seat in a facility having a large number of seats such as a stadium, a theater, and a movie theater. The monitoring device 80 can also be used as the terminal device 30 if an application is installed in the terminal device 30.

FIG. 11 is a perspective view illustrating an example of the equipment 90 including the transmission devices 20 and 20A constituting the position search system 10.

In the configuration example described above, the transmitting devices 20 and 20A provided alone are shown, but the transmitting devices 20 and 20A may be incorporated in the equipment 90 installed in the building 60 as shown in FIG. FIG. 11 shows a lighting fixture as the equipment 90 attached to the ceiling 611 of the building 60. The equipment 90 may be a lighting fixture, an air conditioner, a fire detector, a chair, or the like. The chair here assumes the equipment 90 installed in buildings 60, such as a stadium, a movie theater, and a theater. The equipment 90 includes a main body 91 that provides a predetermined service to the building 60, and the transmission devices 20 and 20 </ b> A are integrated into the main body 91. The transmitting devices 20 and 20A have the same configuration as the transmitting devices 20 and 20A in the configuration example described above, and function in the same manner.

In the case of the equipment 90 in which the transmitters 20 and 20A are incorporated in the main body 91 that functions as a lighting fixture, the location information of the transmitters 20 and 20A is included in the BIM data because the arrangement of the lighting fixtures is described in the BIM data. Inevitably included. Therefore, if the arrangement of the equipment 90 such as a lighting fixture is described without describing the location information of the transmission devices 20 and 20A when creating the BIM data, the location information of the transmission devices 20 and 20A is also described as BIM data. The

In the configuration example described above, one management device 40 and one position detection device 50 are provided for each building 60, but may be provided so as to be shared by a plurality of buildings 60. . That is, the management device 40 may be configured to store the data of the building information model for the plurality of buildings 60. The position detection device 50 may be configured to detect the position of the terminal device 30 in the plurality of buildings 60. Further, the management device 40 may be provided so as to correspond to each of the plurality of buildings 60, and the position detection device 50 may be shared by the plurality of buildings 60. Alternatively, the management device 40 may be shared by a plurality of buildings 60, and the position detection device 50 may correspond to each of the plurality of buildings 60.

In addition, when the terminal device 30 communicates with the management device 40, the position detection device 50, the monitoring device 80, and the like, it is possible to use a route that passes through the transmission devices 20 and 20A. For example, in the communication between the position detection device 50 and the terminal device 30 in the configuration example 1 and the configuration example 2, the transmission device 20 can be routed. Further, the communication between the terminal device 30A and the management device 40 in the configuration example shown in FIG. 9 or the communication between the terminal device 30 and the monitoring device 80 in the configuration example shown in FIG. It is possible to make it.

The position search system 10 described above includes a management device 40, transmission devices 20, 20A, and a terminal device 30. The management device 40 stores building information model data (BIM data) for the building 60. The transmission devices 20 and 20A are installed in the building 60 and transmit radio signals. The terminal device 30 receives a radio signal. The position search system 10 extracts additional information including map information expressed by the data of the building information model from the management apparatus 40, and represents the position where the terminal apparatus 30 has received the radio signal in the map information.

According to this configuration, since the additional information including the map information is expressed by the building information model data (BIM data), it is not necessary to separately generate the map information indicating the position of the terminal device 30. That is, in the building 60 in which BIM data has already been created, additional information including map information can be easily extracted or created from the BIM data, so that it does not take time to create additional information.

It is desirable that the transmission devices 20 and 20A are arranged at a plurality of locations of the building 60, respectively, and the radio signal includes identification information defined for each of the plurality of transmission devices 20 and 20A.

According to this configuration, when the terminal device 30 receives a radio signal, it is possible to identify from which of the plurality of transmission devices 20 and 20A the radio signal is based on the identification information. Therefore, the position where the terminal device 30 has received the radio signal can be accurately known based on the positions of the transmitting devices 20 and 20A.

It is desirable that the position search system 10 further includes a position detection device 50 that receives the identification information included in the radio signal from the terminal device 30 and collates the identification information with the data (BIM data) of the building information model. The position detection device 50 includes a first processing unit 531 that extracts additional information from the management device 40 based on the identification information received from the terminal device 30, and a second processing unit 532 that transmits the additional information to the terminal device 30. Prepare. The first processing unit 531 is configured to extract the additional information from the management device 40 so that the position where the terminal device 30 receives the radio signal is included in the map information.

According to this configuration, the position detection device 50 mediates information between the terminal device 30 and the management device 40. When the terminal device 30 receives the radio signal from the transmission devices 20 and 20A, the terminal device 30 notifies the position detection device 50 of the identification information of the transmission devices 20 and 20A, and the first processing unit 531 of the position detection device 50 transmits the signal. When the identification information of the devices 20 and 20A is received, the BIM data is extracted from the management device 40 with the identification information of the transmission devices 20 and 20A. That is, when the position detection device 50 mediates between the terminal device 30 and the management device 40, the position where the terminal device 30 receives the radio signal from the transmission devices 20, 20A can be included in the map information. In other words, in addition to the management device 40 storing the BIM data and the terminal device 30, by adding the transmission devices 20, 20A and the position detection device 50, the position of the terminal device 30 can be represented in the map information. It becomes possible.

The position detection device 50 includes a third processing unit 533 that narrows down a spatial region in which the terminal device 30 exists using the received signal strength of the wireless signal received by the terminal device 30 when the terminal device 30 receives the wireless signal. It is desirable. In this case, the second processing unit 532 adds the information on the spatial area narrowed down by the third processing unit 533 to the additional information extracted by the first processing unit 531 and transmits the additional information to the terminal device 30.

According to this configuration, in the space area where the terminal device 30 receives the radio signal from the transmitting device 20, the location can be narrowed down by the received signal strength, and the position where the terminal device 30 is receiving the radio signal. Can be obtained more accurately.

Further, the transmitting device 20A may include a control unit 23, a storage unit 22, and a high-frequency circuit 21. The control unit 23 extracts additional information from the management device 40 so that the position of the transmission device 20A is included in the map information. The storage unit 22 stores additional information. The high frequency circuit 21 communicates with the terminal device 30 in both directions. The control unit 23 always transmits a radio signal including identification information and not including additional information, and transmits a radio signal including additional information when the terminal device 30 requests transmission of the additional information.

According to this configuration, the transmitting device 20A stores the map information extracted from the management device 40, and when the terminal device 30 requests transmission of additional information, the transmitting device 20A transmits the map information to the terminal device 30. After the map information is written on the management device 40, the management device 40 becomes unnecessary. That is, at the time of operation, the configuration is simple if the transmitting device 20A and the terminal device 30 are provided. Further, since the additional information generally has a larger data amount than the identification information, if the transmitting device 20A constantly transmits a radio signal including the additional information, the power consumption of the transmitting device 20A increases. By transmitting wireless signals that are not included, an increase in power consumption is suppressed.

In addition to the configuration of the position search system 10 described above, a measurement device 70 that measures the position of the transmission device 20 and a setting device (terminal device 30A) that acquires identification information from the transmission devices 20 and 20A may be provided. In this case, the management device 40 constructs information that associates the position of the transmission devices 20 and 20A measured by the measurement device 70 with the identification information of the transmission devices 20 and 20A acquired by the setting device (terminal device 30A). It has a function to be added to data of the information model.

According to this configuration, even when the information regarding the transmission devices 20 and 20A does not exist in the BIM data, for example, when the transmission devices 20 and 20A are installed in the existing building 60, the positions of the transmission devices 20 and 20A Information and identification information can be added to the BIM data. That is, even when the information regarding the transmitting devices 20 and 20A does not exist in the BIM data, it is possible to detect the position of the terminal device 30 by adding the location information and identification information of the transmitting devices 20 and 20A to the BIM data. become.

It is desirable that the additional information has a hierarchical structure of the entire information of the building 60, the information on the floor in the building 60, and the information on the sections included in the floor.

According to this configuration, it is possible to represent the map information hierarchically using the hierarchical structure of the additional information. That is, it is possible to select a state in which the terminal device 30 has received the wireless signal, a state represented in the entire building 60, a state represented in the floor, and a state represented by a section included in the floor.

The terminal device 30 is a mobile terminal, and it is desirable to display map information including the position where the radio signal is received from the transmission devices 20 and 20A on the monitor.

That is, in a mobile terminal (terminal device 30) such as a smartphone, a tablet terminal, or a portable personal computer, the position in the building 60 can be displayed on the monitor, and the mobile terminal (terminal device 30) is provided. The user can check his / her position in the building 60. Therefore, it can be used for the purpose of the user knowing the current position or for the purpose of searching for a route from the current position to the target position.

The terminal device 30 is a mobile terminal, and the position search system 10 is provided separately from the terminal device 30 and displays on the monitor map information including the position at which the terminal device 30 has received wireless signals from the transmitting devices 20 and 20A. A configuration further including a monitoring device (terminal device 30A) may be employed.

That is, since the position where the terminal device 30 which is a mobile terminal receives the radio signal is displayed on the monitor of the terminal device 30A which is a monitoring device provided separately from the terminal device 30, the position of the person who has the terminal device 30 is displayed. It becomes possible to monitor. For example, it is possible to monitor the distribution of people in the building 60, and it is possible to use it for evacuation guidance by monitoring the movement of people in the building 60.

The position search method in this configuration example includes the following two steps. A 1st step is a step which extracts the additional information containing the map information expressed with the data of a building information model from the management apparatus 40 which has memorize | stored the data (BIM data) of the building information model about the building 60. FIG. A 2nd step is a step which shows the position of the terminal device 30 which received the radio signal which the transmitters 20 and 20A installed in the building 60 transmitted to map information.

According to this method, the additional information including the map information is expressed by the building information model data (BIM data), so that it is not necessary to separately generate the map information indicating the position of the terminal device 30. That is, in the building 60 in which BIM data has already been created, additional information including map information can be easily extracted or created from the BIM data, so that it does not take time to create additional information. Further, when the terminal device 30 receives the radio signal, the management device 40 represents the position of the terminal device 30 in the map information after extracting the additional information including the map information represented by the BIM data of the management device 40. It is only necessary to store additional information. That is, the transmission devices 20, 20A and the terminal device 30 do not need to store additional information, and the demand for hardware resources is reduced.

Further, the position search method may include the following three steps. In the first step, when the identification information of the transmitting devices 20 and 20A is received from the terminal device 30 that has received the radio signal, the identification information is collated with the data (BIM data) of the building information model, and the additional information is received from the management device 40. Is a step of extracting. The second step is a step of extracting the additional information from the management device 40 so that the position where the terminal device 30 receives the radio signal is included in the map information. The third step is a step of transmitting additional information to the terminal device 30.

This method includes a step of transmitting additional information to the terminal device 30 in addition to the position search method described above, so that the terminal device 30 can recognize map information included in the additional information. Therefore, the terminal device 30 that has received the radio signals from the transmission devices 20 and 20A can recognize the position of the terminal device 30 in the map information. For example, the terminal device 30 that has received wireless signals from the transmitting devices 20 and 20A can display its own position on the monitor.

The transmitting device 20A described above is arranged in the building 60 and transmits a radio signal. The transmitting device 20A includes a control unit 23, a storage unit 22, and a high frequency circuit 21. The control unit 23 extracts additional information including map information represented by the building information model data from the management device 40 that stores the building information model data (BIM data) for the building 60. The storage unit 22 stores additional information extracted from the management device 40 so that the position of the transmission device 20A is included in the map information. The high frequency circuit 21 communicates bidirectionally with the terminal device. Furthermore, the control unit 23 always transmits a radio signal including identification information and not including additional information, and transmits a radio signal including additional information when the terminal device 30 requests transmission of the additional information.

According to this configuration, the transmitting device 20A stores the map information extracted from the management device 40, and when the terminal device 30 is requested to transmit additional information, the map information is transmitted to the terminal device 30. The configuration is simple if the transmitting device 20A and the terminal device 30 are provided. In addition, by constantly transmitting a radio signal that does not include additional information, an increase in power consumption in transmitting device 20A during operation is suppressed.

The position detection device 50 described above communicates with the terminal device 30 that receives a radio signal from the transmission device 20 arranged in the building 60, and the building information model data (BIM data) for the building 60. Information is extracted from the stored management device 40. Therefore, the position detection device 50 includes a first processing unit 531 and a second processing unit 532. When the first processing unit 531 receives the identification information of the transmission device 20 included in the wireless signal from the terminal device 30, the first processing unit 531 extracts additional information including map information represented by data of the building information model from the management device 40. The second processing unit 532 transmits the additional information to the terminal device 30. In addition, the first processing unit 531 extracts additional information from the management device 40 so that the map information includes the position where the terminal device 30 received the radio signal.

According to this configuration, the position detection device 50 mediates information between the terminal device 30 and the management device 40, so that the position where the terminal device 30 receives the radio signal from the transmission device 20 can be included in the map information. It becomes possible. That is, by adding the transmission device 20 and the position detection device 50 in addition to the management device 40 storing the BIM data and the terminal device 30, the position of the terminal device 30 can be represented in the map information. .

The above-described equipment 90 is a main body 91 that is installed in the building 60 and provides a predetermined service to the building 60, and the transmission devices 20 and 20A as components of the position search system 10, and is integrated with the main body 91. The transmission devices 20 and 20A are provided.

When the equipment 90 is installed in the building 60, the position of the equipment 90 corresponds to the position of the transmission device 20, 20A. Therefore, for the BIM data, the transmission device 20, There is no need to set information regarding the position of 20A.

The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

For example, the steps included in the position search method may be executed by a computer (computer system). The present invention can be realized as a program for causing a computer to execute the steps included in these methods. Furthermore, the present invention can be realized as a non-transitory computer-readable recording medium such as a CD-ROM on which the program is recorded.

For example, when the present invention is realized by a program (software), each step is executed by executing the program using hardware resources such as a CPU, a memory, and an input / output circuit of a computer. . That is, each step is executed by the CPU obtaining data from a memory or an input / output circuit or the like, and outputting the calculation result to the memory or the input / output circuit or the like.

Further, the components included in the position search system of the above configuration example may be realized as an LSI (Large Scale Integration) that is an integrated circuit (IC).

Further, the integrated circuit is not limited to an LSI, and may be realized by a dedicated circuit or a general-purpose processor. A programmable FPGA (Field Programmable Gate Array) or a reconfigurable processor in which connection and setting of circuit cells inside the LSI can be reconfigured may be used.

Furthermore, if integrated circuit technology that replaces LSI appears due to advancement of semiconductor technology or other derived technology, naturally, even if the integrated circuit of components included in the position search system is performed using that technology. Good.

In addition, a form obtained by making various modifications conceived by those skilled in the art to the above configuration examples, and a form realized by arbitrarily combining the components and functions in each configuration example without departing from the gist of the present invention. It is included in the present invention.

DESCRIPTION OF SYMBOLS 10 Position search system 20 Transmission apparatus 20A Transmission apparatus 30 Terminal apparatus 30A Terminal apparatus (setting apparatus)
DESCRIPTION OF SYMBOLS 40 Management apparatus 50 Position detection apparatus 60 Building 70 Measuring apparatus 80 Monitoring apparatus 90 Equipment 91 Main body part

Claims (14)

1. A management device that stores the data of the building information model for the building;
   A transmission device installed in the building and transmitting a radio signal;
   A terminal device for receiving the radio signal,
   A location search system, wherein additional information including map information represented by data of the building information model is extracted from the management device, and the location at which the terminal device receives the radio signal is represented in the map information.
2. The transmitting device is disposed at each of a plurality of locations of the building,
   The position search system according to claim 1, wherein the wireless signal includes identification information defined for each of the plurality of transmitting devices.
3. The apparatus further comprises a position detection device that receives the identification information included in the wireless signal from the terminal device, and collates the identification information with data of the building information model,
   The position detection device includes:
   A first processing unit that extracts the additional information from the management device based on the identification information received from the terminal device;
   A second processing unit that transmits the additional information to the terminal device,
   The location search system according to claim 2, wherein the first processing unit extracts the additional information from the management device such that a location where the terminal device receives the radio signal is included in the map information.
4. The position detection device includes:
   A third processing unit that narrows down a spatial region in which the terminal device exists using the received signal strength of the wireless signal received by the terminal device when the terminal device receives the wireless signal;
   The position search system according to claim 3, wherein the second processing unit adds the information on the spatial region narrowed down by the third processing unit to the additional information extracted by the first processing unit and transmits the information to the terminal device. .
5. The transmitting device is
   A control unit that extracts the additional information from the management device such that the position of the transmission device is included in the map information;
   A storage unit for storing the additional information;
   A high-frequency circuit that communicates bidirectionally with the terminal device;
   The controller is
   At all times, a radio signal including the identification information and not including the additional information is transmitted,
   The position search system according to claim 2, wherein when the transmission of the additional information is requested from the terminal device, a radio signal including the additional information is transmitted.
6. A measuring device for measuring the position of the transmitting device;
   A setting device for obtaining the identification information from the transmission device;
   The management device has a function of adding, to the data of the building information model, information that associates the position of the transmission device measured by the measurement device with the identification information of the transmission device acquired by the setting device. The position search system according to any one of claims 2 to 5.
7. The additional information is
   The position search system according to any one of claims 1 to 6, wherein the position search system has a hierarchical structure including information on the entire building, information on a floor in the building, and information on a section included in the floor.
8. The position search system according to any one of claims 1 to 7, wherein the terminal device is a mobile terminal, and displays the map information including a position at which the radio signal is received from the transmitting device on a monitor.
9. The terminal device is a mobile terminal;
   The position search system is further provided with a monitoring device that is provided separately from the terminal device and displays the map information including a position at which the terminal device has received the wireless signal from the transmitting device on a monitor. The position search system according to any one of the above.
10. Extracting additional information including map information represented by the data of the building information model from a management device that stores the data of the building information model for the building;
    And a step of representing the position of the terminal device that has received the radio signal transmitted by the transmitting device installed in the building in the map information.
11. Receiving the identification information of the transmitting device from the terminal device that has received the wireless signal, collating the identification information with the data of the building information model, and extracting the additional information from the management device;
    Extracting the additional information from the management device so that the location where the terminal device receives the radio signal is included in the map information;
    The position search method according to claim 10, further comprising: transmitting the additional information to the terminal device.
12. A transmitting device that is arranged in a building and transmits a radio signal,
    A control unit that extracts additional information including map information represented by the data of the building information model from a management device that stores the data of the building information model for the building;
    A storage unit that stores the additional information extracted from the management device so that the position of the transmission device is included in the map information;
    A high-frequency circuit for bidirectional communication with the terminal device,
    The controller is
    At all times, a radio signal including identification information and not including the additional information is transmitted,
    A transmission apparatus, wherein when the transmission of the additional information is requested from the terminal device, a radio signal including the additional information is transmitted.
13. A position detection device that communicates with a terminal device that receives a radio signal from a transmission device arranged in a building and extracts information from a management device that stores data of a building information model for the building There,
    A first processing unit for extracting additional information including map information represented by data of the building information model from the management device upon receiving identification information of the transmitting device included in the wireless signal from the terminal device;
    A second processing unit that transmits the additional information to the terminal device,
    The first processing unit extracts the additional information from the management device so that the location where the terminal device receives the radio signal is included in the map information.
14. A main body that is installed in a building and provides a predetermined service to the building;
    A facility device comprising: a transmission device as a component of the position search system according to any one of claims 1 to 9, wherein the transmission device is provided integrally with the main body.

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