JP6788530B2 - Transmitter detection system, transmitter detection program, mobile terminal and transmitter detection terminal program - Google Patents

Description

The present invention relates to a transmitter detection system, a transmitter detection program, a mobile terminal and a transmitter detection terminal program.

A wireless beacon transmitter is placed on the moving body, a receiver that receives the beacon signal is placed in a predetermined area, and identification information is extracted from the beacon signal received by the receiver to manage the position information of the moving body. The technology to do is known. In addition, a plurality of position-specific radio tags are arranged in space, and a movable radio tag reader identifies a position-specific radio tag whose position information is unknown and a position-specific radio tag, and the position of the position-specific radio tag is identified. A technique for identifying the position of a wireless tag to be positioned using information is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-145093

For example, a system that detects the position of a wireless tag by receiving a wireless signal from the wireless tag (transmitter) exemplified by the BLE (Bluetooth Low Energy) tag (Bluetooth is a registered trademark) by the receiver (receiver). Then, in order to prevent an area where the wireless tag cannot be detected, it is necessary to arrange a sufficient number of receivers.

However, since the device itself of the fixedly arranged receiver is expensive, it is expensive to install many receivers. Further, in order to install the receiver, it is necessary to secure a power source and install the device, which requires a lot of labor and cost. Furthermore, after the receiver is installed, a lot of costs are incurred for its maintenance.

In order to reduce the cost of installing such a receiver, a wireless tag (fixed transmitter) fixedly arranged at a predetermined position is provided instead of the receiver, and the mobile terminal is detected by the wireless tag (transmitter). ) And when the fixed transmitter is detected at the same time, there is known a technique for detecting that the transmitter to be detected is located at a position associated with the fixed transmitter (hereinafter, this technology is referred to as "indirect". "Detection method").

In such a technique, it is necessary for the mobile terminal to be able to detect the fixed transmitter. However, since the mobile terminal scans the wireless tag at a predetermined scan interval, the wireless signal from the fixed transmitter is detected when the mobile terminal is moving and the wireless tag is not scanned. It may not be possible to detect the fixed transmitter because it has passed through the possible area. By setting the scan interval short, the detection rate at which the mobile terminal detects the fixed transmitter can be increased, but frequent scanning increases the power consumption of the battery of the mobile terminal.

Therefore, the present invention has been made in view of the above problems, and in the above indirect detection method, a transmitter capable of appropriately detecting a transmitter to be detected by increasing the detection rate of the fixed transmitter. An object of the present invention is to provide a detection system, a transmitter detection program, a mobile terminal, and a transmitter detection terminal program.

In order to solve the above problems, the transmitter detection system according to one embodiment of the present invention is a transmitter attached to a movable mobile body among transmitters that transmit a radio signal including identification information of the source. A mobile transmitter that is a mobile transmitter and a fixed transmitter that is a transmitter that is fixedly provided at a predetermined position among the transmitters can detect the transmitter by receiving a radio signal from the transmitter. Transmission that detects that the mobile transmitter is located at a position associated with the fixed transmitter when the mobile terminal simultaneously detects by receiving the radio signals of the mobile transmitter and the fixed transmitter. In the device detection system, next to the acquisition unit that acquires detection information indicating the location area where the mobile terminal is located, the speed acquisition unit that acquires information on the movement speed of the mobile terminal, and the location area indicated by the detection information. , A radio for the mobile terminal to detect the transmitter when there is a reception area composed of the first fixed transmitter and it is determined that the mobile terminal is moving based on the movement speed. It is a determination unit that determines that the signal scan interval is changed from the preset first interval to the second interval shorter than the first interval, and the reception area is the radio signal of the fixed transmitter. It includes a determination unit, which is an area reached with a detectable intensity, and an instruction unit for instructing a mobile terminal to change the scan interval to a second interval.

Further, the transmitter detection program according to one embodiment of the present invention is a mover attached to a movable mobile body among transmitters that transmit a radio signal including identification information of the sender. A mobile terminal capable of detecting a transmitter and a fixed transmitter, which is a transmitter fixed at a predetermined position among the transmitters, by receiving a radio signal from the transmitter , A transmitter detection system that detects that the mobile transmitter is located at a position associated with the fixed transmitter when it is simultaneously detected by receiving the radio signals of the mobile transmitter and the fixed transmitter. It is a transmitter detection program that functions as a transmitter, and has an acquisition function for acquiring detection information indicating the location area where the mobile terminal is located, a speed acquisition function for acquiring information on the movement speed of the mobile terminal, and a location indicated by the detection information. Next to the area, there is a reception area composed of the first fixed transmitter, and the mobile terminal detects the transmitter when it is determined that the mobile terminal is moving based on the movement speed. It is a determination unit that determines to change the scan interval of the radio signal to be changed from the preset first interval to the second interval shorter than the first interval, and the reception area is the fixed transmitter. The determination function, which is an area where the radio signal of the above reaches with a detectable intensity, and an instruction function for instructing the mobile terminal to change the scan interval to the second interval are realized.

Further, the mobile terminal according to one embodiment of the present invention is a mobile transmitter which is a transmitter attached to a movable mobile body among transmitters that transmit a radio signal including identification information of the sender, and a mobile transmitter. A fixed transmitter, which is a transmitter fixedly provided at a predetermined position among the transmitters, can be detected by receiving radio signals from each of the mobile transmitter and the fixed transmitter, and is a mobile transmitter. And when the mobile transmitter and the fixed transmitter are detected at the same time by receiving the respective radio signals of the fixed transmitter, it is detected that the mobile transmitter is located at the position associated with the fixed transmitter. Next to the acquisition unit that acquires the detection information indicating the location area where the mobile terminal is located, the speed acquisition unit that acquires the information regarding the movement speed of the mobile terminal, and the location area indicated by the detection information. A radio signal for the mobile terminal to detect the transmitter when a reception area composed of the first fixed transmitter exists and it is determined that the mobile terminal is moving based on the movement speed. It is a determination unit that determines to change the scan interval of the above from a preset first interval to a second interval shorter than the first interval, and the reception area is detected by the radio signal of the fixed transmitter. It is provided with a determination unit, which is an area reached with possible strength, and an instruction unit for changing the scan interval to the second interval.

Further, the transmitter detection terminal program according to one embodiment of the present invention is a transmitter attached to a movable mobile body among transmitters that transmit a radio signal including identification information of the source of the computer. A mobile transmitter and a fixed transmitter, which is a transmitter fixedly provided at a predetermined position among the transmitters, can be detected by receiving radio signals from each of the mobile transmitter and the fixed transmitter. When the mobile transmitter and the fixed transmitter are detected at the same time by receiving the radio signals of the mobile transmitter and the fixed transmitter, the mobile transmitter is located at a position associated with the fixed transmitter. It is a transmitter detection terminal program that functions as a mobile terminal to detect that the mobile terminal is located, and has an acquisition function for acquiring detection information indicating the area where the mobile terminal is located and a speed acquisition function for acquiring information on the movement speed of the mobile terminal. When there is a reception area composed of the first fixed transmitter next to the location area indicated by the function and the detection information, and it is determined that the mobile terminal is moving based on the movement speed. In addition, it is a determination unit that determines that the mobile terminal changes the scan interval of the radio signal for detecting the transmitter from the preset first interval to the second interval shorter than the first interval. The reception area is an area where the radio signal of the fixed transmitter reaches with a detectable intensity, and realizes a determination function and an instruction function for changing the scan interval to the second interval.

In the above embodiment, when the mobile terminal simultaneously detects the mobile transmitter and the fixed transmitter, which are the transmitters to be detected, by receiving the respective wireless signals, the mobile transmitter corresponds to the fixed transmitter. It is premised on the technology to detect that it is located at the position where it can be attached. This technique is hereinafter referred to as "indirect detection method". According to the above embodiment, based on the acquired detection information, it is determined that there is a reception area composed of the first fixed transmitter next to the location area where the mobile terminal is located, and the movement is performed. When it is determined that the terminal is moving, the first fixed transmitter exists in the vicinity of the position where the mobile terminal is located, and the mobile terminal moves in the reception area composed of the first fixed transmitter. It is determined that there is a high possibility of movement. In such a case, the mobile terminal is instructed to shorten the scan interval of the radio signal for the mobile terminal to detect the transmitter, and the scan interval is changed to be shorter in the mobile terminal. Therefore, the detection of the first fixed transmitter is performed. The rate is increased. This makes it possible to appropriately detect the transmitter to be detected.

In the above indirect detection method, by increasing the detection rate of the fixed transmitter, it is possible to appropriately detect the transmitter to be detected.

It is a figure which shows the apparatus configuration of the transmitter detection system including the transmitter detection apparatus which concerns on this embodiment. It is a figure for demonstrating the technique (indirect detection method) for detecting the movement tag which is a premise in the transmitter detection system of this embodiment. It is a figure for demonstrating the problem to be solved by the transmitter detection device of this embodiment. It is a block diagram which shows the functional structure of a transmitter detection device. It is a block diagram which shows the functional structure of a mobile terminal. It is a hard block diagram of a transmitter detection device. It is a figure which shows the structure of the tag type storage part, and the example of the stored data. It is a figure which shows the structure of the log storage part, and the example of the stored data. It is a figure which shows typically the area information stored in the area information storage part. It is a figure which shows the structure of the detection information storage part, and the example of the stored data. It is a flowchart which shows the processing content of the transmitter detection method of this embodiment. It is a figure which shows the structure of a transmitter detection program.

An embodiment of the transmitter detection system according to the present invention will be described with reference to the drawings. If possible, the same parts will be designated by the same reference numerals, and duplicate description will be omitted.

FIG. 1 is a diagram showing a device configuration of a transmitter detection system 1 including a transmitter detection device 10 according to the present embodiment. As shown in FIG. 1, the transmitter detection system 1 includes a transmitter detection device 10, a mobile terminal 20, and a receiver R (receiver). The transmitter detection device 10, the mobile terminal 20, and the receiver R can communicate with each other via the network N. In FIG. 1, three receivers RA, RB, and RC are shown, but the number of receivers is not limited. Further, the number of mobile terminals 20 is not limited to one shown in FIG.

In the present embodiment, the transmitter detection device 10 is a mobile tag (movement) which is a wireless tag attached to a movable mobile body among wireless tags (transmitters) that transmit a wireless signal (for example, a beacon signal). Detects the location of the transmitter). The wireless tag is a device that transmits a wireless signal including the identification information of the wireless tag, and is exemplified by, for example, a BLE (Bluetooth Low Energy) tag (Bluetooth is a registered trademark; the same applies hereinafter).

The mobile terminal 20 is a mobile terminal device, and may be, for example, a portable personal computer, or a mobile terminal such as a high-performance mobile phone (smartphone) or a mobile phone. In the present embodiment, the mobile terminal 20 has a function of a receiver capable of receiving a wireless signal from a wireless tag. The receiver R is a device that detects a wireless tag by receiving a wireless signal from the wireless tag.

FIG. 2 is a diagram for explaining a technique for detecting a movement tag which is a premise in the transmitter detection system 1 of the present embodiment. In the transmitter detection system 1, in addition to the detection of the mobile tag TM by receiving the radio signal from the mobile tag TM by the receiver R, the fixed tag (fixed transmitter) which is a wireless tag fixed at a predetermined position is provided. And the mobile tag TM is detected using the mobile terminal 20.

As shown in FIG. 2, a fixed tag TF is provided in a certain area, and the fixed tag TF constitutes a reception area AF. The reception area composed of the radio tag is an area where the radio signal of the radio tag reaches with a detectable strength, and is mainly defined by the strength of the radio signal emitted by the radio tag. A mobile tag TM is attached to the mobile MO to be detected in order to detect the mobile MO. The movement tag TM constitutes the reception area AM. Then, the mobile terminal 20 capable of detecting the wireless tag by receiving the wireless signal from the wireless tag is located in the reception area AF and also in the reception area AM. In such a case, the mobile terminal 20 receives the radio signal of the fixed tag TF and the radio signal of the mobile tag TM, so that the mobile terminal 20 simultaneously detects the fixed tag TF and the mobile tag TM.
In the transmitter detection system 1, when the mobile terminal 20 acquires the information that the fixed tag TF and the mobile tag TM are detected at the same time, the mobile tag TM is located at a position associated with the fixed tag TF. Can be detected. Specifically, the mobile tag TM may be located within a range within the sum of the distances reached by the radio signals of the fixed tag TF and the mobile tag TM with the strength detectable by the mobile terminal 20 from the fixed tag TF. Detected. The technique for detecting the location of the moving tag TM in this way is hereinafter referred to as an indirect detection method.

FIG. 3 is a diagram for explaining a problem to be solved in the transmitter detection system 1 of the present embodiment. In the indirect detection method, the fixed tag TF is arranged at a predetermined position in the space for detecting the moving tag TM. In order for the mobile tag TM to be detected, it is necessary for the mobile terminal 20 to detect the fixed tag TF.

On the other hand, the mobile terminal 20 scans the wireless signal from the wireless tag at a predetermined interval. In the example shown in FIG. 3, the mobile terminal 20 scans at time st1 and time st2 while moving along the arrow r. Although it is shown in FIG. 3 that the scan is performed at a certain point on the time axis for convenience of illustration, the scan may be performed continuously for a certain period of time. In such a case, when the mobile terminal 20 passes through the reception area AF at a time when the scan between the scan at the time st1 and the scan at the time st2 is not performed, the mobile terminal 20 detects the fixed tag TF. Can not. By setting the scan interval short, the detection rate at which the mobile terminal 20 detects the fixed tag TF can be increased, but high-frequency scanning will increase the power consumption of the battery of the mobile terminal 20. .. The transmitter detection system 1 of the present embodiment appropriately detects moving tags by appropriately controlling the scan interval and increasing the detection rate of fixed tags.

FIG. 4 is a block diagram showing a functional configuration of the transmitter detection device 10. As shown in FIG. 4, the transmitter detection device 10 functionally includes an acquisition unit 11, a speed acquisition unit 12, a determination unit 13, and an instruction unit 14. Further, the transmitter detection device 10 can access storage units such as a tag type storage unit 16, a log storage unit 17, an area information storage unit 18, and a detection information storage unit 19. As shown in FIG. 4, these storage units 16 to 19 may be configured as storage devices capable of communicating with the transmitter detection device 10, or may be configured inside the transmitter detection device 10. Each functional unit of the transmitter detection device 10 will be described in detail later.

FIG. 5 is a block diagram showing a functional configuration of the mobile terminal 20. As shown in FIG. 5, the mobile terminal 20 includes a detection unit 21, a detection information transmission unit 22, a speed detection unit 23, and a speed information transmission unit 24.

The detection unit 21 detects the wireless tag by receiving the wireless signal from the wireless tag at a predetermined scan interval. Since the wireless signal includes the identification information of the wireless tag of the source, the detection unit 21 receives the identification information of the wireless tag included in the wireless signal.

Specifically, the detection unit 21 receives a radio signal from the mobile tag TM and the fixed tag TF provided for the indirect detection method. Further, the detection unit 21 receives a radio signal from a position determination tag, which is a radio tag provided corresponding to the position of the receiver R. When the mobile terminal 20 detects the position determination tag, it is detected that the mobile terminal 20 is located in the vicinity of the receiver R corresponding to the position determination tag.

The detection information transmission unit 22 transmits detection information indicating the location area where the mobile terminal 20 is located to the transmitter detection device 10. Specifically, the detection information transmission unit 22 transmits the identification information of the wireless tag received by the detection unit 21 as the detection information.

For example, the detection information transmission unit 22 transmits the detection of the position determination tag or the detection of the fixed tag as detection information. The detection of the position determination tag indicates that the detection area composed of the receiver corresponding to the position determination tag is the location area where the mobile terminal 20 is located. Further, the detection of the fixed tag indicates that the receiving area composed of the fixed tag is the location area where the mobile terminal 20 is located. The detection area composed of the receiver R is an area in which the receiver R can detect a radio signal from a radio tag located in the area, and is mainly defined by the strength of the radio signal emitted by the radio tag. It is a virtual area. The detection information transmission unit 22 may include the reception time at which the wireless signal from the wireless tag is received in the detection information.

The speed detection unit 23 detects the moving speed of the mobile terminal 20. The speed detection unit 23 may be composed of, for example, an acceleration sensor or the like. The speed detection unit 23 detects the moving speed of the mobile terminal 20 by a well-known technique based on the detected value of the acceleration sensor or the like.

The speed information transmission unit 24 transmits speed information regarding the movement speed of the mobile terminal 20 to the transmitter detection device 10. The speed information transmission unit 24 may transmit the speed value of the mobile terminal as speed information, or may transmit information indicating that the mobile terminal 20 is moving or stopped as speed information.

The block diagrams shown in FIGS. 4 and 5 show blocks for functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one physically and / or logically coupled device, or directly and / or indirectly by two or more physically and / or logically separated devices. (For example, wired and / or wireless) may be connected and realized by these plurality of devices.

For example, the transmitter detection device 10 according to the embodiment of the present invention may function as a computer. FIG. 6 is a diagram showing an example of the hardware configuration of the transmitter detection device 10 according to the present embodiment. The transmitter detection device 10 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. Further, the mobile terminal 20 shown in FIG. 5 may also be configured as a computer device in the same manner as the transmitter detection device 10.

In the following description, the word "device" can be read as a circuit, device, unit, or the like. The hardware configuration of the transmitter detection device 10 may be configured to include one or more of the devices shown in FIG. 6, or may be configured not to include some of the devices.

Each function of the transmitter detection device 10 is performed by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs a calculation, and communication by the communication device 1004, the memory 1002, and the memory 1002. It is realized by controlling the reading and / or writing of data in the storage 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, each of the functional units 11 to 14 shown in FIG. 1 may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, and data from the storage 1003 and / or the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, each functional unit 11 to 14 of the transmitter detection device 10 may be realized by a control program stored in the memory 1002 and operated by the processor 1001. Although it has been described that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 1002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done. The memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, or the like that can be executed to carry out the wireless communication method according to the embodiment of the present invention.

The storage 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. The storage 1003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 1002 and / or storage 1003.

The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. Bus 1007 may be composed of a single bus, or may be composed of different buses between devices.

Further, the transmitter detection device 10 includes hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented on at least one of these hardware.

With reference to FIG. 4 again, the process of controlling the scan interval of the scan performed by each functional unit of the transmitter detection device 10 and the mobile terminal 20 will be described. FIG. 7 is a diagram showing an example of the configuration of the tag type storage unit 16 and the stored data. The tag type storage unit 16 stores in advance the type of the wireless tag in association with the tag ID that identifies the wireless tag. For example, the tag ID "TRA" is associated with a "position determination tag" as a type of wireless tag. The position determination tag is a wireless tag provided corresponding to the position of the receiver R. When the mobile terminal 20 detects the position determination tag, it is detected that the mobile terminal 20 is located in the vicinity of the receiver R corresponding to the position determination tag.

Further, the tag ID "CCC" is associated with a "fixed tag" as a type of wireless tag. The fixed tag is a wireless tag that is placed at a predetermined position in the space for detecting the moving tag TM in the indirect detection method described above. Further, the tag ID to which the "position determination tag" is associated as the type of the wireless tag is further associated with the information for identifying the receiver R corresponding to the position determination tag.

FIG. 8 is a diagram showing an example of the configuration of the log storage unit 17 and the stored data. The log storage unit 17 stores the history of the receiver ID that identifies the receiver R that has detected a specific movement tag or the tag ID that identifies the fixed tag associated with the movement tag when the movement tag is detected by the indirect detection method. , Stored as log information. That is, when the transmitter detection device 10 detects that a specific movement tag is located in the detection area configured by the receiver R, or the movement tag is detected by the indirect detection method, the receiver ID of the receiver R Alternatively, the tag ID of the fixed tag is stored in the log storage unit in chronological order.

Further, when the transmitter detection device 10 stores the receiver ID or the log ID, it is determined whether the movement tag is detected by the receiver R or the fixed tag based on the indirect detection method. Associate as type information.

FIG. 9 is a diagram schematically showing area information stored in the area information storage unit 18. The area information is information indicating the positional relationship between the detection area composed of the receiver R and the reception area composed of the fixed tag. By referring to the area information, the information of the area existing next to a certain area can be acquired.

The transmitter detection device 10 may generate area information based on the log information illustrated in FIG. 8 as a preliminary preparation for the scan interval control process while referring to the tag type information illustrated in FIG. 7. it can.

For example, in the log information shown in FIG. 8, since the movement tag is detected in the detection area of the receiver RA and then detected in the detection area of the receiver RB, the detection area of the receiver RB is next to the detection area of the receiver RA. It turns out that it may exist. For example, the transmitter detection device 10 is the first when a predetermined number or more of such events indicating that the second area may exist next to the first area are accumulated in the log information. The area 2 is associated as an area next to the first area. Then, the transmitter detection device 10 generates area information by collecting information on associations between areas. It should be noted that the generation of area information based on log information as described above can be realized by a well-known technique. Further, the area information is not generated by the transmitter detection device 10, but may be preset information.

As shown in FIG. 9, as for the area information, the detection area ARB composed of the receiver RB exists next to the detection area ARA composed of the receiver RA, and the position determination tag TRA is associated with the receiver RA. It shows that it is provided.

Further, the area information includes the detection area ARA composed of the receiver RA, the detection area ARD composed of the receiver RD, the detection area ARE composed of the receiver RE, and the detection area ARE composed of the receiver RE next to the detection area ARB composed of the receiver RB. It is shown that the reception area AC configured by the fixed tag TC exists, and the position determination tag TRB is provided in association with the receiver RB.

Further, as for the area information, the detection area ARB composed of the receiver RB and the detection area ARE composed of the receiver RE exist next to the detection area ARD composed of the receiver RD, and the position determination is performed in the receiver RD. It shows that the tag TRD is provided in association with each other.

Further, as for the area information, the detection area ARB composed of the receiver RB and the detection area ARD composed of the receiver RD exist next to the detection area ARE composed of the receiver RE, and the position determination is performed in the receiver RE. It shows that the tag TRE is provided in association with each other.

Further, the area information indicates that the detection area ARB configured by the receiver RB exists next to the reception area AC configured by the fixed tag TC.

With reference to FIG. 4 again, the acquisition unit 11 acquires the detection information indicating the location area where the mobile terminal 20 is located from the mobile terminal 20. The detection information is information based on the fact that the mobile terminal 20 has detected the position determination tag or the fixed tag, includes the position determination tag or the tag ID of the fixed tag, and transmits the detection information of the mobile terminal 20. Sent by the department. That is, the acquisition unit 11 acquires information indicating that the mobile terminal 20 is located in the detection area composed of the receiver R corresponding to the position determination tag or the reception area composed of the fixed tag as detection information. To do. The acquisition unit 11 may acquire the position information acquired by the mobile terminal 20 by GPS as the detection information indicating the location area where the mobile terminal 20 is located.

FIG. 10 is a diagram showing an example of the configuration of the detection information storage unit 19 and the stored data. The detection information storage unit 19 stores the tag ID of the position determination tag or the fixed tag in the detection information acquired by the acquisition unit 11. That is, the acquisition unit 11 stores the tag ID of the position determination tag or the fixed tag in the acquired detection information in the detection information storage unit 19.

The speed acquisition unit 12 acquires information on the movement speed of the mobile terminal 20 from the speed information transmission unit 24 of the mobile terminal 20. The speed acquisition unit 12 may acquire the speed value of the mobile terminal 20 as speed information, or may receive information indicating that the mobile terminal 20 is moving or stopped as speed information.

The determination unit 13 has a reception area composed of fixed tags next to the location area of the mobile terminal 20 indicated by the detection information, and the mobile terminal 20 is moving based on the moving speed of the mobile terminal 20. When it is determined that there is, the mobile terminal 20 changes the scan interval of the wireless signal for detecting the wireless tag from the preset first interval to the second interval shorter than the first interval. To judge.

Specifically, the determination unit 13 is a detection area or a detection area composed of a receiver corresponding to the position determination tag based on the tag ID of the position determination tag or the fixed tag acquired as detection information by the acquisition unit 11. The reception area composed of the fixed tag is set as the location area of the mobile terminal 20, and it is determined whether or not the reception area composed of the fixed tag exists next to the location area.

For example, when the tag ID "TRA" shown in the detection information storage unit 19 of FIG. 10 is acquired as the detection information, the determination unit 13 refers to the area information shown in FIG. 9 and refers to the position determination tag. It recognizes that the detection area ARB composed of the receiver RB exists next to the detection area ARA composed of the receiver RA corresponding to the TRA, but the reception area composed of the fixed tag does not exist. Therefore, the determination unit 13 does not determine that the scan interval for detecting the wireless tag by the mobile terminal 20 is changed.

On the other hand, when the tag ID "TRB" shown in the detection information storage unit 19 of FIG. 10 is acquired as the detection information, the determination unit 13 refers to the area information shown in FIG. 9 and refers to the position determination tag. It recognizes that there is a reception area AC composed of the fixed tag TC next to the detection area ARB composed of the receiver RB corresponding to the TRB. As a result, it is determined that the fixed tag TC and the reception area AC exist in the vicinity of the position where the mobile terminal 20 is located.

Further, the determination unit 13 determines whether or not the mobile terminal 20 is moving based on the information regarding the movement speed of the mobile terminal 20 acquired by the speed acquisition unit 12. That is, when it is further determined that the mobile terminal 20 is moving, it is determined that there is a high possibility that the mobile terminal 20 will move in the reception area AC after this determination. Therefore, when the determination unit 13 determines that the reception area composed of the fixed tag exists next to the location area of the mobile terminal 20 and the mobile terminal 20 is moving, the mobile terminal 20 It is determined that the scan interval for detecting the wireless tag by is changed from the preset first interval to the second interval shorter than the first interval.

The instruction unit 14 instructs the mobile terminal 20 to change the scan interval in the mobile terminal 20 from the first interval to the second interval. Upon receiving this instruction, the mobile terminal 20 changes the scan interval to the second interval. By changing the scan interval in the mobile terminal 20 to be shorter in this way, the detection rate of the fixed tag TC can be increased.

Further, the instruction unit 14 may also transmit an instruction to return the scan interval to the first interval at a predetermined opportunity after transmitting an instruction to change the scan interval to the second interval to the mobile terminal 20. Good. The predetermined trigger may be, for example, that the mobile terminal 20 detects the fixed tag TC and that the predetermined time has elapsed (timeout).

Further, the predetermined trigger may be that it is detected that the mobile terminal 20 has moved from the location area to another area. Specifically, even if the mobile terminal 20 detects a position determination tag or a fixed tag other than the position determination tag or the fixed tag related to the detection information acquired by the acquisition unit 11, the predetermined trigger is Good. In this way, the scan interval is returned to the original interval at a predetermined opportunity, so that the power consumption in the mobile terminal 20 is suppressed.

Next, a transmitter detection method in the transmitter detection system 1 will be described with reference to FIG. FIG. 11 is a flowchart showing the processing contents of the transmitter detection method of the present embodiment.

In step S1, based on the detection information acquired by the acquisition unit 11, the determination unit 13 determines whether or not the mobile terminal 20 has detected the position determination tag or the second fixed tag corresponding to the receiver R. To do. If it is determined that the mobile terminal 20 has detected the position determination tag or the second fixed tag, the process proceeds to step S2. On the other hand, if it is not determined that the mobile terminal 20 has detected the position determination tag or the second fixed tag, the determination process of step S1 is repeated.

In step S2, the determination unit 13 is next to the detection area composed of the receiver R corresponding to the position determination tag or the reception area composed of the second fixed tag detected in step S1. It is determined whether or not a reception area composed of fixed tags exists. If it is determined that the reception area composed of the first fixed tag exists, the process proceeds to step S3. On the other hand, if it is not determined that the reception area composed of the first fixed tag exists, the process returns to step S1.

In step S3, the determination unit 13 determines whether or not the mobile terminal 20 is moving based on the information regarding the movement speed of the mobile terminal 20 acquired by the speed acquisition unit 12. If it is determined that the mobile terminal 20 is moving, the process proceeds to step S4. On the other hand, if it is not determined that the mobile terminal 20 is moving, the determination process in step S3 is repeated.

In step S4, the determination unit 13 determines that the mobile terminal 20 changes the scan interval for detecting the wireless tag from the set first interval to the second interval shorter than the first interval. Then, the instruction unit 14 instructs the mobile terminal 20 to change the scan interval from the first interval to the second interval.

In step S5, the instruction unit 14 determines whether or not it has become a predetermined trigger for returning the scan interval. If it is determined that the predetermined trigger has occurred, the process proceeds to step S6. On the other hand, if it is not determined that the predetermined trigger has occurred, the determination process of step S5 is repeated.

In step S6, the instruction unit 14 transmits an instruction to return the scan interval from the second interval to the first interval to the mobile terminal 20.

Next, a transmitter detection program for causing the computer to function as the transmitter detection device 10 of the present embodiment will be described. FIG. 12 is a diagram showing the configuration of the transmitter detection program P10.

The transmitter detection program P10 includes a main module m10, an acquisition module m11, a speed acquisition module m12, a determination module m13, and an instruction module m14 that collectively control the transmitter detection process in the transmitter detection device 10. Then, each module m11 to m14 realizes each function for the acquisition unit 11, the speed acquisition unit 12, the determination unit 13, and the instruction unit 14 in the transmitter detection device 10. The transmitter detection program P10 may be transmitted via a transmission medium such as a communication line, or may be stored in the recording medium D10 as shown in FIG. ..

In the transmitter detection device 10, the transmitter detection method, and the transmitter detection program P10 of the present embodiment described above, the first fixing is performed next to the location area where the mobile terminal 20 is located, based on the acquired detection information. By determining that the reception area composed of the tags exists and that the mobile terminal 20 is moving, the first fixed tag exists in the vicinity of the position where the mobile terminal 20 is located. Then, it is determined that the mobile terminal 20 is likely to move in the reception area composed of the first fixed tag. In such a case, the mobile terminal 20 is instructed to shorten the scan interval of the wireless signal for the mobile terminal 20 to detect the wireless tag, and the scan interval is shortened in the mobile terminal 20, so that the first fixed tag Detection rate is increased. This makes it possible to appropriately detect the wireless tag to be detected.

Further, in the transmitter detection system according to another form, the instruction unit may instruct the mobile terminal to return the scan interval to the first interval at a predetermined opportunity.

According to the above embodiment, the scan interval is changed to be shorter when the mobile terminal is likely to be located in the vicinity of the first fixed transmitter, and the scan interval is returned to the original interval at a predetermined trigger thereafter. , Power consumption in mobile terminals is suppressed.

Further, in the transmitter detection system according to another form, the acquisition unit is for position determination, which is a transmitter provided by the mobile terminal corresponding to the position of the receiver for receiving the radio signal from the transmitter. The detection of the transmitter or the detection of the second fixed transmitter is acquired as detection information, and the determination unit uses the detection area composed of the receiver corresponding to the position determination transmitter or the second fixed transmission. With the reception area composed of the device as the location area, it is determined whether or not there is a reception area composed of the first fixed transmitter next to the location area, and the detection area is set within the detection area. The area may be an area where the receiver can detect the radio signal from the located transmitter.

According to the above embodiment, the location area including the current location position of the mobile terminal is appropriately determined by the detection of the position determination transmitter or the second fixed transmitter.

Further, in the transmitter detection system according to another form, the area information storage unit that stores in advance the positional relationship between the detection area composed of one or more receivers and the reception area composed of one or more fixed transmitters. The determination unit is next to the detection area composed of the receiver corresponding to the position determination transmitter or the reception area composed of the second fixed transmitter with reference to the area information storage unit. , It may be determined whether or not there is a reception area composed of the first fixed transmitter.

According to the above embodiment, it is appropriately determined that the reception area composed of the first fixed transmitter exists next to the area including the current location of the mobile terminal.

Although the present embodiment has been described in detail above, it is clear to those skilled in the art that the present embodiment is not limited to the embodiment described in the present specification. This embodiment can be implemented as a modified or modified mode without departing from the spirit and scope of the present invention determined by the description of the claims. Therefore, the description herein is for purposes of illustration only and has no limiting implications for the present embodiment.

In the present embodiment, the transmitter detection system 1 is configured by the functional units 11 to 14 included in the transmitter detection device 10, but the present invention is not limited to this embodiment, and for example, the mobile terminal 20 is the functional unit 11 to 11. The transmitter detection system 1 may be configured with a functional unit corresponding to 14.

In this case, the mobile terminal 20 includes an acquisition unit having the same function as the acquisition unit 11, a speed acquisition unit having the same function as the speed acquisition unit 12, a determination unit having the same function as the determination unit 13, and a determination unit. An indicator unit having the same function as the indicator unit 14 may be provided.

The acquisition unit of the mobile terminal 20 acquires the tag ID of the position determination tag or the fixed tag received by the detection unit 21 as detection information indicating the location area where the mobile terminal 20 is located. The speed acquisition unit of the mobile terminal 20 acquires the movement speed detected by the speed detection unit 23 as information regarding the movement speed of the mobile terminal 20.

The determination unit of the mobile terminal 20 has a detection area or a fixed tag composed of a receiver corresponding to the position determination tag based on the tag ID of the position determination tag or the fixed tag acquired as detection information by the acquisition unit. With the configured reception area as the location area of the mobile terminal 20, it is determined by referring to the area information (see FIG. 9) whether or not there is a reception area composed of fixed tags next to the location area. ..

Further, the determination unit of the mobile terminal 20 determines whether or not the mobile terminal 20 is moving based on the information regarding the movement speed of the mobile terminal 20 acquired by the speed acquisition unit 12. Then, when the determination unit of the mobile terminal 20 determines that a reception area composed of a fixed tag exists next to the location area of the mobile terminal 20 and the mobile terminal 20 is moving, the determination unit determines that the mobile terminal 20 is moving. It is determined that the scan interval for detecting the wireless tag by the mobile terminal 20 is changed from the preset first interval to the second interval shorter than the first interval.

The instruction unit of the mobile terminal 20 causes the scan interval to be changed to the second interval when the determination unit determines that the scan interval is to be changed to the second interval. Specifically, the indicator causes the detection unit to change the scan interval to the second interval.

Further, a transmitter detection terminal program for causing the computer to function as a mobile terminal 20 having a functional unit corresponding to the functional units 11 to 14 will be described. The transmitter detection terminal program includes a main module, an acquisition module, a speed acquisition module, a determination module, and an instruction module that collectively control the transmitter detection process in the mobile terminal 20. Then, by these modules, each function for the acquisition unit, the speed acquisition unit, the determination unit, and the instruction unit in the mobile terminal 20 is realized. The transmitter detection terminal program may be transmitted via a transmission medium such as a communication line, or may be stored in a recording medium.

Each aspect / embodiment described herein includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to systems utilizing Bluetooth®, other suitable systems and / or next-generation systems extended based on them.

The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order, and are not limited to the particular order presented.

Information and the like can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).

Each aspect / embodiment described in the present specification may be used alone, in combination, or may be switched and used according to the execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.

Further, software, instructions, and the like may be transmitted and received via a transmission medium. For example, the software uses wired technology such as coaxial cable, fiber optic cable, twist pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave to websites, servers, or other When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described herein may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

In addition, the terms described in the present specification and / or the terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings.

The terms "system" and "network" as used herein are used interchangeably.

Further, the information, parameters, etc. described in the present specification may be represented by an absolute value, a relative value from a predetermined value, or another corresponding information. ..

The phrase "based on" as used herein does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

When the terms "first", "second", etc. are used herein, any reference to the elements does not generally limit the quantity or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

As long as "include", "including", and variations thereof are used within the scope of the present specification or claims, these terms are similar to the term "comprising". Is intended to be inclusive. Furthermore, the term "or" as used herein or in the claims is intended not to be an exclusive OR.

In the present specification, a plurality of devices shall be included unless the device has only one device apparently in the context or technically.

In the whole of the present disclosure, if the context clearly does not indicate the singular, it shall include more than one.

1 ... transmitter detection system, 10 ... transmitter detection device, 11 ... acquisition unit, 12 ... speed acquisition unit, 13 ... judgment unit, 14 ... indicator unit, 16 ... tag type storage unit, 17 ... log storage unit, 18 ... Area information storage unit, 19 ... Detection information storage unit, 20 ... Mobile terminal, 21 ... Detection unit, 22 ... Detection information transmission unit, 23 ... Speed detection unit, 24 ... Speed information transmission unit, D10 ... Recording medium, m10 ... Main Module, m11 ... acquisition module, m12 ... speed acquisition module, m13 ... judgment module, m14 ... instruction module, P10 ... transmitter detection program, R, RA, RB, RC, RD, RE ... receiver.

Claims (7)

Among the transmitters that transmit wireless signals including the identification information of the source, the mobile transmitter, which is a transmitter attached to a movable mobile body, and the transmitter, which is fixedly provided at a predetermined position among the transmitters. A mobile terminal capable of detecting a fixed transmitter, which is a transmitted transmitter, by receiving a radio signal from the transmitter, transmits each radio signal of the mobile transmitter and the fixed transmitter. A transmitter detection system that detects that the mobile transmitter is located at a position associated with the fixed transmitter when the mobile transmitter is detected at the same time by receiving the signal.
An acquisition unit that acquires detection information indicating the location area where the mobile terminal is located, and
A speed acquisition unit that acquires information on the movement speed of the mobile terminal, and
It was determined that there is a reception area composed of the first fixed transmitter next to the location area indicated by the detection information, and that the mobile terminal is moving based on the movement speed. In this case, a determination unit that determines that the mobile terminal changes the scan interval of the radio signal for detecting the transmitter from the preset first interval to the second interval shorter than the first interval. The reception area is an area where the radio signal of the fixed transmitter reaches with a detectable strength.
An instruction unit that instructs the mobile terminal to change the scan interval to the second interval, and
A transmitter detection system equipped with. The instruction unit instructs the mobile terminal to return the scan interval to the first interval at a predetermined opportunity.
The transmitter detection system according to claim 1. The acquisition unit has detected that the mobile terminal has detected a position determination transmitter, which is a transmitter provided corresponding to the position of the receiver for receiving a radio signal from the transmitter, or a second. Acquiring the detection of the fixed transmitter as the detection information,
The determination unit uses the detection area composed of the receiver corresponding to the position determination transmitter or the reception area composed of the second fixed transmitter as the location area, and next to the location area, the determination unit. It is determined whether or not there is a reception area composed of the first fixed transmitter.
The detection area is an area in which the receiver can detect a radio signal from a transmitter located in the detection area.
The transmitter detection system according to claim 1 or 2. Further, an area information storage unit that previously stores the positional relationship between the detection area composed of one or more of the receivers and the reception area composed of one or more fixed transmitters is provided.
With reference to the area information storage unit, the determination unit may be placed next to a detection area composed of a receiver corresponding to the position determination transmitter or a reception area composed of the second fixed transmitter. Determining whether or not there is a reception area composed of the first fixed transmitter.
The transmitter detection system according to claim 3. The computer is fixed at a predetermined position in the mobile transmitter, which is a transmitter attached to a movable mobile body, among the transmitters that transmit a wireless signal including the identification information of the source, and the transmitter. A mobile terminal capable of detecting the transmitter by receiving a radio signal from the transmitter with a fixed transmitter, which is a transmitter provided in the above-mentioned, is a mobile transmitter and the fixed transmitter, respectively. It is a transmitter detection program that functions as a transmitter detection system that detects that the mobile transmitter is located at a position associated with the fixed transmitter when it is simultaneously detected by receiving a wireless signal. hand,
An acquisition function that acquires detection information indicating the location area where the mobile terminal is located, and
A speed acquisition function for acquiring information on the moving speed of the mobile terminal, and
It was determined that there is a reception area composed of the first fixed transmitter next to the location area indicated by the detection information, and that the mobile terminal is moving based on the movement speed. In this case, a determination unit that determines that the mobile terminal changes the scan interval of the radio signal for detecting the transmitter from the preset first interval to the second interval shorter than the first interval. The reception area is an area where the radio signal of the fixed transmitter reaches with a detectable strength.
An instruction function for instructing the mobile terminal to change the scan interval to the second interval, and
A transmitter detection program that realizes. Among the transmitters that transmit wireless signals including the identification information of the source, the mobile transmitter, which is a transmitter attached to a movable mobile body, and the transmitter, which is fixed at a predetermined position among the transmitters. A fixed transmitter, which is a provided transmitter, can be detected by receiving radio signals from each of the mobile transmitter and the fixed transmitter, and the radio signals of the mobile transmitter and the fixed transmitter, respectively. A mobile terminal that detects that the mobile transmitter is located at a position associated with the fixed transmitter when the mobile transmitter and the fixed transmitter are detected at the same time by receiving. ,
An acquisition unit that acquires detection information indicating the location area where the mobile terminal is located, and
A speed acquisition unit that acquires information on the movement speed of the mobile terminal, and
It was determined that there is a reception area composed of the first fixed transmitter next to the location area indicated by the detection information, and that the mobile terminal is moving based on the movement speed. In this case, the determination unit determines that the mobile terminal changes the scan interval of the radio signal for detecting the transmitter from the preset first interval to the second interval shorter than the first interval. The reception area is an area where the radio signal of the fixed transmitter reaches with a detectable strength.
An indicator that changes the scan interval to the second interval,
A mobile terminal equipped with. The computer is placed at a predetermined position in the mobile transmitter, which is a transmitter attached to a movable mobile body, and the transmitter among the transmitters that transmit a wireless signal including the identification information of the source. A fixed transmitter, which is a fixed transmitter, can be detected by receiving radio signals from each of the mobile transmitter and the fixed transmitter, and each of the mobile transmitter and the fixed transmitter can be detected. When the mobile transmitter and the fixed transmitter are detected at the same time by receiving the radio signal of the mobile terminal, the mobile terminal detects that the mobile transmitter is located at a position associated with the fixed transmitter. It is a transmitter detection terminal program that functions as
An acquisition function that acquires detection information indicating the location area where the mobile terminal is located, and
A speed acquisition function for acquiring information on the moving speed of the mobile terminal, and
It was determined that there is a reception area composed of the first fixed transmitter next to the location area indicated by the detection information, and that the mobile terminal is moving based on the movement speed. In this case, a determination unit that determines that the mobile terminal changes the scan interval of the radio signal for detecting the transmitter from the preset first interval to the second interval shorter than the first interval. The reception area is an area where the radio signal of the fixed transmitter reaches with a detectable strength.
An instruction function for changing the scan interval to the second interval, and
A transmitter detection terminal program that realizes.

Images