JP2017183785A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication system capable of letting a communication device appropriately receive a signal transmitted by a mobile communication terminal.SOLUTION: A communication system 1 comprises: a plurality of communication devices 10 for transmitting a confirmation signal; a mobile communication terminal 20 for transmitting a response signal if it receives a confirmation signal transmitted by any of the communication devices 10; and a communication control unit 15 for adjusting timing of transmission of confirmation signals by the communication devices 10. The communication control unit 15 lets one communication device 10A of mutually adjacent communication devices 10 transmit a confirmation signal A, and then lets the other communication device 10B transmit a confirmation signal B after a prescribed waiting time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication system.

In recent years, a communication terminal owned by a user transmits a response signal to a signal (beacon signal) transmitted from a communication device, and the communication device receives the response signal, so that the communication terminal approaches the communication device. A detecting communication system is used (for example, see Patent Document 1).
Such a communication system, for example, when a communication device is installed in a picture displayed in a museum or the like, when a user having a predetermined mobile communication terminal approaches the picture, the mobile communication terminal A signal (beacon signal) transmitted from the communication device is received, a response signal is transmitted to the communication device, and the communication device transmits information about the painting to the terminal side according to the response signal.
However, in such a communication system, when a communication device is arranged in each of a plurality of pictures, a beacon signal is transmitted from each communication device at an individual timing, so each communication device is installed in an adjacent picture. In some cases, the response signal transmitted from the mobile communication terminal cannot be properly detected due to the influence of the beacon signal of the communication device.

Patent No. 5200135

  The subject of this invention is providing the communication system which can make a communication apparatus receive appropriately the signal transmitted from the portable communication terminal.

  The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this. In addition, the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

The first aspect of the invention relates to a plurality of communication devices (10) for transmitting confirmation signals and a portable device for transmitting a response signal when receiving a confirmation signal transmitted from any one of the plurality of communication devices. A communication terminal (20), and a communication control unit (15) that adjusts the timing of transmission of each confirmation signal of the plurality of communication devices, wherein the communication control unit is one of the communication devices adjacent to each other. A communication system (1) is characterized in that after a confirmation signal is transmitted from a communication device, a confirmation signal is transmitted from the other communication device with a predetermined waiting time.
According to a second aspect of the present invention, in the communication system (1) of the first aspect, the communication control unit (15) is configured such that any one of the plurality of communication devices (10) is the mobile communication terminal (20). ), The transmission of the confirmation signal by the adjacent communication device is stopped until the reception of the response signal is completed.

  According to the present invention, the communication system can cause the communication device to properly receive the signal transmitted from the mobile communication terminal.

1 is a diagram illustrating an overall configuration of a communication system 1 according to an embodiment. It is a figure which shows the inside of the room 100 where the communication apparatus 10 of embodiment is arrange | positioned. It is a figure which shows the state of the signal detected in communication part 11A of 10 A of communication apparatuses of embodiment. It is a figure which shows the state of the signal detected in 11 A of communication parts of 10 A of communication apparatuses by the conventional communication system. It is a flowchart explaining the operation | movement between the communication control apparatus 15 and each communication apparatus 10 of embodiment.

(Embodiment)
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating an overall configuration of a communication system 1 according to the embodiment.
FIG. 2 is a diagram illustrating the inside of the room 100 in which the communication device 10 according to the embodiment is arranged.
1 shows a state in which two communication devices (10A, 10B) are connected to the communication control device 15, but in reality, eight communication devices ( 10A to 10H) are connected.

As illustrated in FIG. 1, the communication system 1 includes a plurality of communication devices 10, a communication control device 15, and a mobile communication terminal 20. In the communication system 1, the mobile communication terminal 20 transmits a response signal to the confirmation signal transmitted from the communication device 10, and the communication device 10 receives the response signal, whereby the mobile communication terminal 20 for the communication device 10. Can be detected.
In the present embodiment, as shown in FIG. 2, the communication system 1 includes a communication device 10 (10 </ b> A to 10 </ b> H) installed in the vicinity of each of a plurality of paintings (not shown) displayed in a museum room 100. Yes. The mobile communication terminal 20 is handed to the user P who has visited the painting, and when the user P having the mobile communication terminal 20 approaches the painting, the communication device 10 related to the picture approaching from the mobile communication terminal 20. A response signal is transmitted, and the communication device 10 transmits detailed information about the painting to the mobile communication terminal 20 in response to the response signal.

In the present embodiment, eight communication devices 10 </ b> A to 10 </ b> H are arranged corresponding to the eight pictures displayed in the room 100. As shown in FIG. 2, four communication devices 10 are arranged on each of opposing walls 101 and 102 in the museum room 100, and the communication devices 10A, 10C, 10E, and 10G are equally spaced on the wall 101. The communication devices 10B, 10D, 10F, and 10H are arranged on the wall 102 at equal intervals.
Here, in this embodiment, it is assumed that the distance between communication devices arranged adjacent to each wall of the room 100 is sufficiently shorter than the distance between communication devices arranged between opposing walls. For example, the distance between the communication device 10A arranged on the wall 101 and the communication device 10C adjacent to the communication device 10A is about 2 m, and the communication device 10A provided on the wall 101 and the opposite wall 102 The distance to the communication device 10B provided in is about 10 m.

Hereinafter, the communication device 10A will be described, but the same applies to the communication devices 10B to 10H.
As illustrated in FIG. 1, the communication device 10A includes a communication unit 11A, a storage unit 12A, a control unit 13A, and the like.
The communication unit 11A is an existing wireless communication module (for example, wireless LAN, Bluetooth (registered trademark)) that performs two-way communication with a terminal communication unit 21 of the mobile communication terminal 20 to be described later using radio waves. In addition, the communication unit 11A transmits a rectangular radio wave (beacon signal) having a predetermined strength at a predetermined cycle (for example, about 300 msec) as a confirmation signal, or from the mobile communication terminal 20 according to the confirmation signal. A response signal to be transmitted is received, or information on a picture related to the communication device 10 is transmitted to the mobile communication terminal 20.
The communication distance of the communication device 10 is, for example, a range having a radius of 30 m with the communication unit 11A as the center.

The storage unit 12A is a storage device such as a hard disk or a semiconductor memory element for storing programs, information, and the like necessary for the operation of the communication device 10A. In addition, the storage unit 12A stores information on a picture in which the communication device 10A is disposed (for example, the name of the author, information on the author, detailed information on the work, etc.).
The control unit 13A is a control circuit that performs overall control of each unit of the communication device 10A, and includes, for example, a CPU (central processing unit). 13 A of control parts implement | achieve various functions based on this invention in cooperation with each part of 10 A of communication apparatuses mentioned above by reading and running suitably the various programs etc. which were memorize | stored in the memory | storage part 12A.
Further, the control unit 13A transmits the picture information stored in the storage unit 12A to the mobile communication terminal 20 side through the communication unit 11A based on the response signal received from the mobile communication terminal 20.

  The communication control device 15 is a control circuit that controls the communication functions of the plurality of communication devices 10 in an integrated manner, and includes, for example, a CPU. The communication control device 15 is connected to the control unit 13 of each communication device 10, and a confirmation signal transmitted from the plurality of communication devices 10 by appropriately reading and executing a program stored in a storage unit (not shown). The output timing of (beacon signal) is adjusted (details will be described later).

As shown in FIG. 1, the mobile communication terminal 20 includes a terminal communication unit 21, a terminal storage unit 22, a power supply unit 23, a display unit 24, a terminal control unit 25, and the like. As described above, the portable communication terminal 20 is a portable communication terminal that is lent to the user P who has visited the museum, and can display information on the painting received from the communication device 10 on the display unit 24.
The terminal communication unit 21 is an existing wireless communication module (for example, wireless LAN, Bluetooth (registered trademark)) that performs two-way communication with the communication unit 11 of the communication device 10 using radio waves. The terminal communication unit 21 receives a confirmation signal (beacon signal) transmitted from the communication device 10, transmits a response signal to the communication device 10, or receives a picture information signal from the communication device 10.

The terminal storage unit 22 is a storage device such as a hard disk or a semiconductor memory element for storing programs, information, and the like necessary for the operation of the mobile communication terminal 20.
The power supply unit 23 is a power supply source for driving the mobile communication terminal 20, and is composed of, for example, a rechargeable battery.
The display unit 24 is a monitor that displays setting information of the mobile communication terminal 20 or displays information about a picture received from the communication device 10, and includes, for example, a liquid crystal monitor (LCD).
The terminal control unit 25 is a control circuit that performs overall control of each unit of the mobile communication terminal 20, and includes, for example, a CPU (central processing unit). The terminal control unit 25 reads out and executes various programs stored in the terminal storage unit 22 as appropriate, thereby cooperating with each unit of the communication device 10 described above to realize various functions according to the present invention.

Next, the operation of the communication system 1 of the present embodiment will be described.
FIG. 3 is a diagram illustrating a state of a signal detected in the communication unit 11A of the communication device 10A of the present embodiment. FIG. 3A is a diagram illustrating a signal state when a confirmation signal is transmitted from each communication device, and FIG. 3B is a signal state when a response signal is received from the mobile communication terminal. FIG. FIG. 3C is a diagram illustrating a signal state when the confirmation signal of another communication device is stopped until reception of the response signal is completed when the response signal is received from the mobile communication terminal.
FIG. 4 is a diagram illustrating a state of a signal detected in the communication unit 11A of the communication device 10A according to the conventional communication system.

3 and 4, the vertical axis represents signal strength (for example, power value [dBm]), and the horizontal axis represents time [msec].
3 and 4 show the strength of signals detected by the communication unit 11A of the communication device 10A. Therefore, the detected signal is not only the confirmation signal A transmitted from the communication device 10A, but also the confirmation signal C of the adjacent communication device 10C, the confirmation signal B of the communication device 10B facing the communication device 10A, and the communication device 10B. The confirmation signal D and the like of the communication device 10D adjacent to is also detected in a state where the signal intensity is lowered by the distance from the communication device 10A.
Here, in each of FIGS. 3 and 4, the detection states of the confirmation signals A to D of the communication devices 10A to 10D arranged in the vicinity of the communication device 10A are illustrated, and the confirmation signals E to H are omitted. doing.

In the museum room 100, the control unit 13 of each communication device 10 arranged in the vicinity of each of the plurality of paintings transmits a confirmation signal (beacon signal) from the communication unit 11 at a predetermined cycle.
When the user P having the mobile communication terminal 20 enters the room 100 and approaches to view a picture related to the communication device 10A as shown in FIG. 2, for example, the terminal control unit of the mobile communication terminal 20 25 receives the confirmation signal A transmitted from the communication unit 11A of the communication device 10A by the terminal communication unit 21, and transmits a response signal to the communication device 10A.
The control unit 13A of the communication device 10A receives a response signal transmitted from the mobile communication terminal 20. Then, the picture information stored in the storage unit 12A is read out and transmitted to the mobile communication terminal 20 through the communication unit 11A.
The terminal control unit 25 of the mobile communication terminal 20 receives the picture information transmitted from the communication device 10 </ b> A, stores it in the terminal storage unit 22, and displays the information on the display unit 24.
As described above, the user P can obtain detailed information on the paintings displayed through the mobile communication terminal 20, and can more enjoy the exhibits in the museum.

  Here, in the case of a conventional communication system, each communication device arranged in the vicinity of each painting randomly transmits a confirmation signal at an individual timing. Therefore, for example, as shown in FIG. 4, the confirmation signals A to D transmitted from the communication devices 10 </ b> A to 10 </ b> D may overlap with each other when viewed from the communication unit 11 </ b> A of the communication device 10 </ b> A. In such a case, for example, when a response signal is transmitted from the mobile communication terminal in response to the confirmation signal A of the communication device 10A, the response signal is the confirmation signal B of the other communication device (communication devices 10B to 10D). In some cases, the communication device 10 </ b> A may not be properly received and may interfere (become buried) with C and the like.

Therefore, the communication system 1 according to the present embodiment includes the communication control device 15 and adjusts the timing so that the transmissions of the confirmation signals of the communication devices adjacent to each other do not overlap. Specifically, after transmitting a confirmation signal from one communication device, the communication control device 15 transmits a confirmation signal from a communication device adjacent to the communication device after providing a predetermined waiting time.
In this embodiment, as shown in FIG. 3A, for example, a confirmation signal A is transmitted from the communication apparatus 10A for 75 msec, and after waiting for 75 msec, the confirmation is performed from the communication apparatus 10C adjacent to the communication apparatus 10A. The signal C is transmitted for 75 msec, a waiting time of 75 msec is provided, and the operation of transmitting the confirmation signal A from the communication device 10A is repeated again. For this reason, the confirmation signal A of the communication device 10A and the confirmation signal C of the communication device 10C are alternately transmitted at a cycle of 300 msec.

Similarly, the confirmation signal A is also transmitted from the communication device 10D, the communication device 10E, and the communication device 10H simultaneously with the transmission of the confirmation signal A of the communication device 10A, and the communication device is simultaneously transmitted with the confirmation signal C of the communication device 10C. Confirmation signals are also transmitted from 10B, communication device 10F, and communication device 10G. As described above, the communication control device 15 can prevent the confirmation signals from being overlapped between each communication device and the communication device adjacent to each communication device.
Thereby, as shown in FIG. 3B, the communication system 1 according to the present embodiment, for example, when the communication device 10A receives a response signal from the mobile communication terminal 20, is within the waiting time after the transmission of the confirmation signal A. Since the response signal can be received, the response signal can be suppressed from overlapping with the confirmation signal transmitted from the other communication devices (10B to 10H) to interfere with the communication device 10A. The signal can be properly received.

Here, the signal strength of the response signal transmitted from the mobile communication terminal 20 may be weaker than the signal strength of the confirmation signal C of the adjacent communication device 10C, and the reception timing of the response signal is the confirmation signal. There may be a case where the waiting time has elapsed after A is transmitted. In such a case, the response signal overlaps with the confirmation signal of the adjacent communication device and interferes, and the response signal may not be detected properly.
Therefore, in order for the communication control device 15 of the present embodiment to detect the reception of the response signal from the mobile communication terminal 20 more reliably, when any one of the communication devices 10 detects the response signal, the reception of the response signal is completed. Until then, the transmission of the confirmation signal of each communication device is stopped. Thereby, as shown in FIG.3 (c), it can prevent that the confirmation signal transmitted from the mobile communication terminal 20 overlaps with the confirmation signal of the other communication apparatus 10, and the communication system 1 is more A confirmation signal can be reliably received.

Here, details of the operation between the communication control device 15 and each communication device 10 of the present embodiment will be described.
FIG. 5 is a flowchart for explaining the operation between the communication control device 15 and each communication device 10 of the present embodiment.
In the following description, the communication system 1 will describe the transmission of confirmation signals from the four communication devices 10A to 10D, but the same applies to the communication devices 10E to 10H.

As shown in FIG. 5, in step (hereinafter referred to as S) 1, the communication control device 15 first transmits a signal (request signal) for transmitting a confirmation signal to the communication device 10A and the communication device 10D. .
When the confirmation signal transmission request is received from the communication control device 15, the control unit 13A of the communication device 10A transmits the confirmation signal A by controlling the communication unit 11A in S2. At the same time, in S3, the control unit 13D of the communication device 10D controls the communication unit 11D to transmit the confirmation signal D.

Subsequently, after the elapse of a predetermined time (the time (150 msec) in which the communication devices 10A and 10D add the waiting time (75 msec) to the transmission time (75 msec) of the confirmation signal), the communication control device 15 performs the communication device in S4. A signal (request signal) for transmitting a confirmation signal is transmitted to 10B and the communication device 10C.
If the confirmation signal transmission request is received from the communication control device 15, the control unit 13B of the communication device 10B controls the communication unit 11B to transmit the confirmation signal B in S5. At the same time, in S6, the control unit 13C of the communication device 10C controls the communication unit 11C to transmit the confirmation signal C.
As described above, the communication system 1 repeatedly transmits a confirmation signal from each communication device at a predetermined timing (see FIG. 3A).

In S7, the communication control device 15 transmits again a signal (request signal) for transmitting a confirmation signal to the communication device 10A and the communication device 10D.
In S8, the control unit 13A of the communication device 10A transmits a confirmation signal A, and in S9, the control unit 13D of the communication device 10D transmits a confirmation signal D.
Here, when the user P having the mobile communication terminal 20 is located in the vicinity of the communication device 10A, the terminal control unit 25 of the mobile communication terminal 20 receives the confirmation signal A and then transmits a response signal. To do.
And control part 13A of communication apparatus 10A receives the response signal transmitted from portable communication terminal 20 by communication part 11A in S10. At the same time, the control unit 13A transmits a signal (reception start signal) to the effect that the response signal is received to the communication control device 15. When the reception of the response signal is completed, the control unit 13A transmits a signal indicating that the reception is completed (reception completion signal) to the communication control device 15.
At this time, when receiving the reception start signal from the communication device 10A, the communication control device 15 stops transmission of a signal (request signal) for transmitting a confirmation signal to each communication device until the reception completion signal is received. . Thereby, it can prevent that the response signal transmitted from the portable communication terminal 20 overlaps with the confirmation signal of the other communication devices 10B to 10D, and the communication device 10A can detect the response signal more reliably. Can do.

When receiving the reception completion signal from the communication device 10A, the communication control device 15 transmits again a signal (request signal) for sending a confirmation signal to the communication device 10B and the communication device 10C in S11.
In S12, the control unit 13B of the communication device 10B transmits a confirmation signal B, and in S13, the control unit 13C of the communication device 10C transmits a confirmation signal C.
The communication system 1 continuously transmits a confirmation signal from each communication device 10 and waits for a response signal from the mobile communication terminal 20.

As described above, the invention of this embodiment has the following effects.
(1) The communication system 1 includes a communication control device 15 that adjusts the timing of transmission of each confirmation signal of a plurality of communication devices, and the communication control device 15 receives confirmation signals from one of the adjacent communication devices. After a predetermined waiting time is set, a confirmation signal is transmitted from the other communication device. Thereby, the communication system 1 of this embodiment suppresses that the confirmation signal transmitted from the adjacent communication apparatus 10 overlaps, and the response signal transmitted from the mobile communication terminal 20 interferes and is buried. And the communication apparatus 10 can appropriately receive the response signal.
(2) The communication system 1 is adjacent to the communication control device 15 until reception of the response signal is completed when any one of the plurality of communication devices receives the response signal from the mobile communication terminal 20. Transmission of the confirmation signal by the communication device is stopped. Thereby, the communication system 1 of this embodiment can prevent that the confirmation signal transmitted from the portable communication terminal 20 overlaps with the confirmation signal of the other communication apparatus 10, and receives a confirmation signal more reliably. Can be made.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made as in the modifications described later, and these are also included in the present invention. Within the technical scope. In addition, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments. It should be noted that the above-described embodiment and modifications described later can be used in appropriate combination, but detailed description thereof is omitted.

(Deformation)
(1) In the above-described embodiment, the communication control device 15 is an example configured separately from the communication device 10, but is not limited thereto. For example, the communication control device 15 is provided in any one of the plurality of communication devices 10 (for example, the communication device 10A) or is incorporated in the control unit of the communication device so that the confirmation signal of each communication device is received. You may make it adjust the timing of transmission.

(2) In the above-described embodiment, the communication control device 15 is an example in which when one communication device (10A) receives a response signal from the mobile communication terminal 20, the communication control device 15 stops sending confirmation signals from all the communication devices. Although described, the present invention is not limited to this. For example, the communication control device 15 includes a communication device (10B) adjacent to the communication device (10A) that receives the response signal, and a communication device (10C, 10B, 10D) disposed in the vicinity of the communication device (10A). Only the transmission of the confirmation signal may be stopped.

(3) In the above-described embodiment, the communication system 1 has been described as an example including eight communication devices 10A to 10H. However, the communication system 1 may include a number other than eight.

(4) Each communication device 10 may transmit a signal indicating the completion of the transmission of the confirmation signal to the communication control device 15 after transmitting the confirmation signal.

(5) In the above-described embodiment, the example in which the picture information is stored in the storage units 12A to 12H of each communication device is shown, but the present invention is not limited to this, and the terminal storage unit of the mobile communication terminal 20 The information of each picture may be stored in the batch 22. In this case, after the portable communication terminal 20 transmits a response signal to the communication device 10, the identification information of the picture displayed on the display is transmitted from the communication device 10, and the portable communication terminal 20 receives the information on the painting based on the identification information. Is read from the terminal storage unit 22 and displayed on the display unit 24.

(6) In the above-described embodiment, each communication device has shown an example of wireless communication using radio waves, but is not limited to this, and communication devices using light, sound, electric field, magnetic field, etc. You may make it utilize.

DESCRIPTION OF SYMBOLS 1 Communication system 10 (10A-10H) Communication apparatus 11 (11A-11H) Communication part 12 (12A-12H) Storage part 13 (13A-13H) Control part 15 Communication control apparatus 20 Portable communication terminal 21 Terminal communication part 22 Terminal storage Unit 23 power supply unit 24 display unit 25 terminal control unit

Claims (2)

A plurality of communication devices for transmitting confirmation signals;
A portable communication terminal that transmits a response signal when receiving a confirmation signal transmitted from any one of the plurality of communication devices;
A communication control unit that adjusts the timing of transmission of each confirmation signal of the plurality of communication devices,
The communication control unit transmits a confirmation signal from one of the communication devices adjacent to each other and then transmits a confirmation signal from the other communication device after providing a predetermined waiting time. ,
A communication system characterized by the above. The communication system according to claim 1,
The communication control unit, when any one of the plurality of communication devices receives the response signal from the mobile communication terminal, until the reception of the response signal is completed by the adjacent communication device Stopping the transmission of the confirmation signal;
A communication system characterized by the above.

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