WO2022244169A1 - 決定装置、決定方法、携帯端末、制御方法、位置通知システム、および位置通知方法 - Google Patents
決定装置、決定方法、携帯端末、制御方法、位置通知システム、および位置通知方法 Download PDFInfo
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- WO2022244169A1 WO2022244169A1 PCT/JP2021/019107 JP2021019107W WO2022244169A1 WO 2022244169 A1 WO2022244169 A1 WO 2022244169A1 JP 2021019107 W JP2021019107 W JP 2021019107W WO 2022244169 A1 WO2022244169 A1 WO 2022244169A1
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- 238000009434 installation Methods 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 19
- 238000009795 derivation Methods 0.000 claims description 15
- 238000005286 illumination Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Definitions
- the present invention relates to technology of a determination device, a determination method, a mobile terminal, a control method, a location notification system, and a location notification method.
- dedicated lighting equipment In technology that uses visible light, dedicated lighting equipment is used as the lighting equipment installed on the ceiling. This dedicated lighting equipment is LED lighting having a driver circuit and the like for modulating the ID, so it is more expensive than normal LED lighting.
- Dedicated lighting equipment can transmit identification information such as ID information with changes in light or color.
- the mobile terminal can acquire the identification information from the intensity information of the received light. Since the position of the dedicated lighting device is associated with the identification information, the position of the mobile terminal can be estimated.
- the present invention aims to provide a technology that can economically construct a position notification system.
- One aspect of the present invention is a determination device for determining an installation position of a lighting device having a transmission function of transmitting information according to a change in light output mode, comprising: a position where the lighting device can be installed; A position information acquisition unit that acquires position information indicating an irradiation target area to which light is irradiated when a device is installed, and an adjacent irradiation target area based on the position information acquired by the position information acquisition unit an adjacent information acquisition unit that acquires adjacent information indicating a relationship; and a non-irradiation target that is not irradiated with light whose output mode changes due to the lighting device not being installed, based on the adjacent information acquired by the adjacent information acquisition unit. and a determination unit that determines the installation position of the lighting device so that the areas are not adjacent to each other.
- One aspect of the present invention is a determination method for determining an installation position of a lighting device having a transmission function of transmitting information according to a change in light output mode, comprising: a position where the lighting device can be installed; a position information obtaining step for obtaining position information indicating an irradiation target area to which light is irradiated when the device is installed; and an adjacent irradiation target area based on the position information obtained by the position information obtaining step.
- One aspect of the present invention includes a detection unit that detects a moving direction of a mobile terminal, a determination unit that determines whether or not it is possible to acquire position specifying information transmitted by a change in light output mode from a lighting device, and the determination unit.
- a moving direction acquiring unit that acquires the moving direction detected by the detecting unit when the unit determines that the position specifying information cannot be acquired; and the determining unit determines that the position specifying information cannot be acquired.
- a position deriving unit for deriving the position of the mobile terminal based on the position specifying information obtained before the moving direction obtaining unit and the moving direction obtained by the moving direction obtaining unit.
- One aspect of the present invention is a control method for a mobile terminal, comprising: a detection step of detecting a moving direction of the mobile terminal; a moving direction acquiring step of acquiring the moving direction detected by the detecting step when the determining step determines that the position specifying information cannot be acquired; and the determining step a position deriving step of deriving the position of the mobile terminal based on the position specifying information acquired before the position specifying information is determined to be unacquirable; and the moving direction acquired by the moving direction acquiring step. It is a control method provided.
- One aspect of the present invention is a position notification system including a mobile terminal and a server, wherein the mobile terminal includes a detection unit that detects a moving direction of the mobile terminal and a change in the output mode of light from a lighting device. a determining unit that determines whether or not the position specifying information to be transmitted can be obtained; and if the determining unit determines that the position specifying information cannot be obtained, the movement direction detected by the detecting unit is obtained. and a moving direction acquiring unit, wherein the server acquires the position specifying information acquired before the determining unit determines that the position specifying information cannot be acquired, and the moving direction acquiring unit acquires the position specifying information. and a position deriving unit that derives the position of the mobile terminal based on the moving direction.
- One aspect of the present invention is a position notification method in a position notification system including a mobile terminal and a server, wherein the mobile terminal detects a moving direction of the mobile terminal; a determination step of determining whether or not it is possible to acquire position specifying information transmitted from a device according to a change in light output mode; a moving direction acquiring step of acquiring the moving direction detected by the detecting step; and the position specifying information acquired before the server determines that the position specifying information cannot be acquired by the determining step and a position deriving step of deriving the position of the mobile terminal based on the moving direction obtained by the moving direction obtaining step.
- the present invention makes it possible to economically construct a system that notifies the location.
- FIG. 2 is a functional block diagram showing the functional configuration of the determination device 100;
- FIG. It is a figure which shows the example of an area ID database.
- 4 is a flow chart showing the flow of processing of the determination device 100.
- FIG. It is a figure which shows an example of an irradiation object area
- 3 is a functional block diagram showing the functional configuration of the mobile terminal 40;
- FIG. It is a figure which shows the example of an area ID database.
- It which shows the specific example of a direction database.
- 4 is a flow chart showing the flow of processing of the mobile terminal 40.
- FIG. FIG. 10 is a sequence diagram showing processing in the position notification system;
- FIG. 1 is a diagram showing a configuration example of a system for notifying a position (hereinafter referred to as a "position notifying system").
- a position notification system 1 includes a plurality of lighting devices 20-1, 20-2, 20-3, and 20-4 on a ceiling 10.
- the lighting device 20 is LED lighting and irradiates light toward the floor surface 30 .
- the lighting device 20 can transmit a signal to the mobile terminal 40 by a change in the light output mode (blinking pattern in this embodiment) corresponding to the identification information (hereinafter referred to as “ID”).
- ID is uniquely assigned to the irradiation target area, and the lighting device 20 transmits a signal to the mobile terminal 40 with a blinking pattern indicating this ID. Therefore, when the ID is acquired, the irradiation target area is specified from the ID, so it is known that the position of the portable terminal 40 is any position within the irradiation target area.
- the mobile terminal 40 can acquire an ID in the irradiation target area irradiated with the light of the lighting equipment 20 .
- the portable terminal 40 cannot obtain an ID in the irradiation target area where the lighting device 20 is not installed and thus the light is not irradiated.
- the irradiation target area irradiated with the light of the lighting device 20 is expressed as an ID-present area, as shown in FIG.
- An irradiation target area in which the illumination device 20 is not installed and is not irradiated with light having ID information is referred to as an ID-free area.
- the ID-free area simply indicates that the light having ID information is not irradiated, and an ID is assigned to the irradiation target area.
- the lighting devices 20 are not installed at the installation positions 50-1 and 50-2. This shows two ID-less areas.
- the installation positions of the lighting devices 20 are determined so that the ID-less areas are not adjacent to each other. A determination device for determining the installation position will be described.
- FIG. 2 is a functional block diagram showing the functional configuration of the determination device 100.
- the determination device 100 includes a CPU (Central Processing Unit), a memory, an auxiliary storage device, etc. connected via a bus, and functions as a device including a control unit 120 and an area ID storage unit 141 by executing a control program. .
- CPU Central Processing Unit
- control unit 120 and the area ID storage unit 141 uses hardware such as ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), and FPGA (Field Programmable Gate Array). may be implemented.
- the control program may be recorded on a computer-readable recording medium.
- Computer-readable recording media include portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, semiconductor storage devices (such as SSD: Solid State Drives), and storage such as hard disks built into computer systems. It is a device.
- a control program may be transmitted via an electric communication line.
- the area ID storage unit 141 is configured using a storage device such as a semiconductor storage device or a magnetic hard disk device.
- the area ID storage unit 141 stores an area ID database.
- FIG. 3 is a diagram showing a specific example of the area ID database when a maximum of N lighting devices 20 can be installed.
- the area ID database consists of ID, area name, location, radius and fit information. Among them, the ID is uniquely assigned to each irradiation target area as described above.
- the area name is the name of the irradiation target area. In the case of FIG. 3, the area name is obtained by adding an ID to the end of "area".
- the position indicates the coordinates of the installation position when the ceiling 10 is regarded as the XY plane.
- the floor surface 30 is also regarded as an XY plane, and the coordinates at which a perpendicular line drawn from the coordinates of the installation position to the floor surface 30 intersects the floor surface 30 are the same XY components as the coordinates of the ceiling 10 .
- the radius is the radius of a circle centered on the coordinates, and this circle indicates the irradiation target area.
- the position and radius in the area ID storage unit 141 are an example of position information.
- the compatibility information is information that indicates whether or not the lighting equipment is suitable for installation. "Suitable” indicates suitable, and “Unsuitable” indicates unsuitable. Not suitable for installation of the lighting equipment means that the lighting equipment 20 can be installed, but fixtures, etc., are installed in the irradiation target area, or it is far from the entrance and the mobile terminal 40 cannot acquire the position. Indicates an installation position that is not very preferable in terms of operation, such as an irradiation target area that is difficult to confirm whether or not it is. Note that the degree of conformity may be indicated in stages. For example, the degree of suitability may be set in five stages, and the higher the stage, the less suitable the lighting apparatus may be installed.
- control section 120 in FIG. 2 is executed by a device having a processor such as a CPU and a RAM, for example.
- the control unit 120 functions as a position information acquisition unit 121, an adjacent information acquisition unit 122, and a determination unit 123 by executing control programs.
- the position information acquisition unit 121 acquires from the area ID storage unit 141 position information indicating a position where the lighting device 20 can be installed and an irradiation target area to which light is irradiated when the lighting device 20 is installed at that position. do.
- the adjacency information acquisition unit 122 acquires adjacency information indicating the adjacency relationship of the irradiation target regions based on the position information. Based on the adjacency information, the determination unit 123 determines the installation position of the lighting device 20 so that the irradiation target areas that are not irradiated with light due to the lighting device 20 not being installed do not adjoin each other.
- Adjacent information acquisition unit 122 will explain an example of determining whether or not the two irradiation target areas A and B are adjacent to each other.
- Adjacent information acquisition unit 122 first acquires the distance between the position of A and the position of B based on FIG. The adjacent information acquisition unit 122 determines that the irradiation target areas A and B are adjacent when the distance is less than or equal to the sum of the radius of A and the radius of B, and determines that the distance is less than the sum of the radius of A and the radius of B. is large, it is determined that the irradiation target areas A and B are not adjacent to each other.
- FIG. 4 is a flow chart showing the processing flow of the determining device 100.
- the position information acquisition unit 121 acquires position information (step S101).
- the adjacent information acquisition unit 122 acquires adjacent information.
- the determining unit 123 searches for installation positions where the k ID-less areas are not adjacent (step S104).
- the determination unit 123 determines whether or not the search is successful (step S105). Here, if even one is found, the determination is affirmative. If the search is successful (step S105: YES), the determination unit 123 increments k by 1 (step S106), and searches again in step S104. That is, the determining unit 123 increases the number of ID-free areas by one and searches for non-adjacent installation positions.
- the determination unit 123 searches for an installation position based on matching information among the installation positions where k ⁇ 1 ID-less areas are not adjacent (step S107). In other words, the determination unit 123 searches for the installation position where the number of irradiation target areas with matching information of "unsuitable" and no ID areas is the largest.
- the determining unit 123 determines, as the installation position of the lighting device 20, the installation position with the largest number of ID-less areas in the irradiation target areas for which the compatibility information is "inappropriate” (step S108), and ends the process.
- the compatibility information makes it possible to reduce the irradiation target areas where there are fixtures, etc., and the irradiation target areas where it is difficult to confirm whether or not the position of the mobile terminal 40 can be acquired, thereby reducing the cost required for installation. can be used, and suitable operation can be performed.
- ⁇ Derivation phase> a derivation phase will be described in which the portable terminal 40 derives its own position from the lighting device 20 installed at the installation position determined in the determination phase.
- the mobile terminal 40 is assumed to be a smart phone.
- FIG. 5 is a diagram showing an example of an irradiation target area.
- the irradiation target regions used in the description of the derivation phase are composed of nine square irradiation target regions. The number attached to the square indicates the ID of the irradiation target area.
- FIG. 6 is a diagram showing areas with IDs and areas without IDs. Areas 2, 4, 6, and 8 are areas with IDs, and areas 1, 3, 5, 7, and 9 are areas without IDs. As shown in FIG. 6, no ID areas are adjacent. Based on these, the derivation phase will be explained below.
- FIG. 7 is a functional block diagram showing the functional configuration of the mobile terminal 40.
- the mobile terminal 40 includes a CPU, a memory, an auxiliary storage device, etc. connected by a bus, and by executing a derivation program, the control unit 200, the area storage unit 241, the direction storage unit 242, the light receiving unit 221, the communication unit 222 , a display operation unit 223 and an acceleration sensor 224 .
- All or part of the functions of the control unit 200, the area storage unit 241, and the direction storage unit 242 may be implemented using hardware such as ASIC, PLD, and FPGA.
- the derivation program may be recorded on a computer-readable recording medium.
- Computer-readable recording media include portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, semiconductor storage devices (eg, SSD), and storage devices such as hard disks incorporated in computer systems.
- the derivation program may be transmitted via telecommunication lines.
- the area storage unit 241 is configured using a storage device such as a semiconductor storage device or a magnetic hard disk device.
- the area storage unit 241 stores an area database.
- FIG. 8 is a diagram showing a specific example of the area ID database.
- the area database indicates whether the irradiation target area is an ID area or an ID non-area.
- the area database consists of IDs and presence/absence. The presence/absence is "Yes" in the ID-present area, and "No" in the case of the ID-less area. As shown in FIG. 6, areas 2, 4, 6, and 8 are areas with IDs, and areas 1, 3, 5, and 7 are areas without IDs.
- the direction storage unit 242 is configured using a storage device such as a semiconductor storage device or a magnetic hard disk device.
- the direction storage unit 242 stores a direction database.
- FIG. 9 is a diagram showing a specific example of the direction database.
- the direction database consists of areas with IDs and north, south, east, and west directions.
- the direction database indicates which areas exist in the north, south, east, and west directions of the ID-bearing area. NULL indicates that the area does not exist.
- the north, south, east, and west directions are such that the upward direction is north, the right direction is east, the left direction is west, and the downward direction is south.
- area 2 has area 3 in the east direction, no area in the north direction, area 1 in the west direction, and area 5 in the south direction. Therefore, for area 2, 3 is east, NULL is north, 1 is west, and 5 is south.
- the light receiving unit 221 receives the light emitted by the lighting equipment 20 .
- the light receiving unit 221 is composed of, for example, a CCD sensor, an illuminance sensor, a PD (Photo Diode), and the like.
- the communication unit 222 performs various communications using communication lines such as 4G and 5G, wireless LAN, Bluetooth (registered trademark), and the like.
- the display operation unit 223 is composed of liquid crystal, organic EL, touch panel, hard keys, and the like.
- the acceleration sensor 224 detects acceleration and movement direction when the mobile terminal 40 moves.
- a control unit 200 in FIG. 7 controls the operation of each unit of the mobile terminal 40 .
- the control unit 200 is executed by a device having a processor such as a CPU and a RAM, for example.
- the control unit 200 functions as a detection unit 201, a determination unit 202, a moving direction acquisition unit 203, and a position derivation unit 204 by executing derivation programs.
- the detection unit 201 detects the moving direction of the mobile terminal 40 detected by the acceleration sensor 224 .
- the determination unit 202 determines whether it is possible to acquire the position specifying information transmitted from the lighting device 20 using light.
- the ID is an example of position specifying information.
- the movement direction acquisition unit 203 acquires the movement direction detected by the detection unit 201 when the determination unit 202 determines that the position specifying information cannot be acquired.
- the moving direction before it is determined that the position specifying information cannot be acquired is acquired.
- the detection unit 201 detects the direction of movement each time a predetermined time elapses, and stores the time of detection and the direction of movement at that time. Thereby, the moving direction acquisition unit 203 can acquire the previous moving direction.
- the position deriving unit 204 calculates the position of the mobile terminal 40 based on the position specifying information acquired before the determining unit 202 determines that the position specifying information cannot be acquired and the moving direction acquired by the moving direction acquiring unit. derive For example, if the position specifying information acquired before it is determined that the position specifying information is not obtainable is 4 and the acquired moving direction is north, the position derivation unit 204 uses the direction database to determine the current The location is derived to be Area 1.
- FIG. 10 is a flowchart showing the processing flow of the mobile terminal 40.
- FIG. This flowchart is executed by an application installed in the mobile terminal 40 .
- the user of the mobile terminal 40 activates the application when entering the area where the location notification system 1 is built.
- the detection unit 201 detects the moving direction each time a predetermined time elapses as a separate thread from the thread that executes the following flowchart, and sequentially detects the detected time and the moving direction at that time. Assume that you remember.
- step S201 when the light receiving unit 221 receives light (step S201), the determining unit 202 determines whether or not the ID can be acquired from the received light (step S202). If the ID can be acquired (step S202: YES), the determination unit 202 stores the ID (step S207), displays the position corresponding to the ID (step S206), and returns to step S201. In step S207, the ID of the currently positioned irradiation target area is successively updated.
- step S202 the movement direction acquisition unit 203 acquires the movement direction stored by the detection unit 201 (step S203).
- the moving direction before it is determined that the ID cannot be obtained is obtained.
- the position derivation unit 204 acquires the ID stored in step S207. This makes it possible to acquire the ID of the irradiation target area where the mobile terminal 40 was located before it was determined that the ID could not be acquired.
- the position derivation unit 204 derives the current position of the mobile terminal 40 from the moving direction and the ID using the direction database (step S205), displays the derived position on the display operation unit 223 (step S206), Return to step S201.
- FIG. 11 is a sequence diagram showing processing in a position notification system in which the server 500 is added to the position notification system 1. As shown in FIG.
- the mobile terminal 40 In a normal sequence, when the mobile terminal 40 receives light and acquires an ID, it transmits an ID notification to the server 500 .
- the server 500 acquires the ID from the ID notification and stores the ID. Also, the mobile terminal 40 displays the position corresponding to the acquired ID.
- the mobile terminal 40 acquires the moving direction before it was determined that the ID was not obtainable (step S302).
- the mobile terminal 40 transmits a notification that acquisition is not possible to the server 500 (step S303).
- the acquisition-impossibility notification includes the movement direction acquired in step S302.
- the server 500 uses the direction database to derive the current position of the mobile terminal 40 from the stored ID and the direction of movement received in the acquisition impossibility notification (step S304).
- the server 500 transmits the position notification to the mobile terminal 40 (step S305).
- the location notification contains the derived location.
- the mobile terminal 40 displays the position received in the position notification on the display operation unit 223 (step S306).
- the direction database has only four directions of north, south, east and west, but it is not limited to this.
- the present invention can be applied even when the shape of the area is other than the circle or square used in the examples so far.
- the installation positions are determined so that the ID-less areas are not adjacent to each other, but the present invention is not limited to this.
- they may be slightly adjacent to each other depending on the required accuracy.
- the number of ID-less areas allowed to be adjacent may be flexibly changed according to the required accuracy. As a result, the number of lighting devices 20 can be further reduced, so that a system for notifying positions can be constructed economically.
- the light emitted by the lighting device 20 is not limited to visible light, and may be near-infrared light or the like as long as the light can be received by the illuminance sensor or camera.
- information is transmitted using a blinking pattern, but instead of this, a change in color or intensity of light may be used.
- the present invention is applicable to a location notification system that notifies locations indoors.
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Abstract
Description
図1は、位置を通知するシステム(以下、「位置通知システム」という)の構成例を示す図である。位置通知システム1は、天井10に複数の照明機器20-1、20-2、20-3、20-4を備える。以下の説明において、照明機器20-1、20-2、20-3、20-4をそれぞれ区別しない場合には、照明機器20と表現する。
次に、上記決定フェーズにより決定された設置位置に設置された照明機器20により、携帯端末40が自らの位置を導出する導出フェーズについて説明する。携帯端末40は、スマートフォンを想定している。
Claims (8)
- 光の出力態様の変化により情報を送信する送信機能を備える照明機器の設置位置を決定する決定装置であって、
照明機器を設置可能な位置と、前記位置に前記照明機器が設置された場合に光が照射される照射対象領域と、を示す位置情報を取得する位置情報取得部と、
前記位置情報取得部により取得された前記位置情報にもとづき、照射対象領域の隣接関係を示す隣接情報を取得する隣接情報取得部と、
前記隣接情報取得部により取得された前記隣接情報にもとづき、前記照明機器が設置されないことにより前記出力態様の変化する光が照射されない非照射対象領域が隣接しないように前記照明機器の設置位置を決定する決定部と、
を備えた決定装置。 - 前記決定部は、前記非照射対象領域の数が最大となるように前記照明機器の設置位置を決定する請求項1に記載の決定装置。
- 設置位置ごとに、前記照明機器の設置に適しているか否かを示す適合情報が設けられ、前記決定部は、前記隣接情報および前記適合情報にもとづき、前記照明機器が設置されないことにより前記非照射対象領域が隣接しないように前記照明機器の設置位置を決定する請求項1または請求項2に記載の決定装置。
- 光の出力態様の変化により情報を送信する送信機能を備える照明機器の設置位置を決定する決定方法であって、
照明機器を設置可能な位置と、前記位置に前記照明機器が設置された場合に光が照射される照射対象領域と、を示す位置情報を取得する位置情報取得ステップと、
前記位置情報取得ステップにより取得された前記位置情報にもとづき、照射対象領域の隣接関係を示す隣接情報を取得する隣接情報取得ステップと、
前記隣接情報取得ステップにより取得された前記隣接情報にもとづき、前記照明機器が設置されないことにより前記出力態様の変化する光が照射されない非照射対象領域が隣接しないように前記照明機器の設置位置を決定する決定ステップと、
を備えた決定方法。 - 携帯端末の移動方向を検出する検出部と、
照明機器から光の出力態様の変化により送信される位置特定情報を取得可能か否かを判定する判定部と、
前記判定部により、前記位置特定情報が取得不可能と判定された場合に、前記検出部により検出された移動方向を取得する移動方向取得部と、
前記判定部により前記位置特定情報が取得不可能と判定される前に取得された前記位置特定情報と、前記移動方向取得部により取得された移動方向にもとづき、携帯端末の位置を導出する位置導出部と、
を備えた携帯端末。 - 携帯端末の制御方法であって、
前記携帯端末の移動方向を検出する検出ステップと、
照明機器から光の出力態様の変化により送信される位置特定情報を取得可能か否かを判定する判定ステップと、
前記判定ステップにより、前記位置特定情報が取得不可能と判定された場合に、前記検出ステップにより検出された移動方向を取得する移動方向取得ステップと、
前記判定ステップにより前記位置特定情報が取得不可能と判定される前に取得された前記位置特定情報と、前記移動方向取得ステップにより取得された移動方向にもとづき、携帯端末の位置を導出する位置導出ステップと、
を備えた制御方法。 - 携帯端末と、サーバとを含む位置通知システムであって、
前記携帯端末は、
前記携帯端末の移動方向を検出する検出部と、
照明機器から光の出力態様の変化により送信される位置特定情報を取得可能か否かを判定する判定部と、
前記判定部により、前記位置特定情報が取得不可能と判定された場合に、前記検出部により検出された移動方向を取得する移動方向取得部と、
を備え、
前記サーバは、
前記判定部により前記位置特定情報が取得不可能と判定される前に取得された前記位置特定情報と、前記移動方向取得部により取得された移動方向にもとづき、前記携帯端末の位置を導出する位置導出部、
を備えた位置通知システム。 - 携帯端末と、サーバとを含む位置通知システムにおける位置通知方法であって、
前記携帯端末が、前記携帯端末の移動方向を検出する検出ステップと、
前記携帯端末が、照明機器から光の出力態様の変化により送信される位置特定情報を取得可能か否かを判定する判定ステップと、
前記携帯端末が、前記判定ステップにより、前記位置特定情報が取得不可能と判定された場合に、前記検出ステップにより検出された移動方向を取得する移動方向取得ステップと、
前記サーバが、前記判定ステップにより前記位置特定情報が取得不可能と判定される前に取得された前記位置特定情報と、前記移動方向取得ステップにより取得された移動方向にもとづき、前記携帯端末の位置を導出する位置導出ステップと、
を備えた位置通知方法。
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JP2009053118A (ja) * | 2007-08-28 | 2009-03-12 | Panasonic Electric Works Co Ltd | 方向特定システム |
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