JP6979368B2 - Mobile communication system - Google Patents

Description

The present disclosure relates to mobile communication systems and is applicable to, for example, wireless systems for fire fighting.

Japanese Unexamined Patent Publication No. 2007-67562 discloses a digital mobile communication system that can be applied to a wireless system for fire fighting or a wireless system for emergency use.

Japanese Unexamined Patent Publication No. 2007-67562

Depending on the situation of the disaster, it is possible that a firefighter (hereinafter referred to simply as a member) may become a rescuer. It is assumed that the conductor may not be able to grasp the activity status of the members due to the injury of the members.
An object of the present disclosure is to provide a mobile communication system capable of grasping the activity status of a portable device owner.

The following is a brief description of the representative of the present disclosure.
That is, the mobile communication system receives the alarm data from the first portable device that wirelessly transmits the alarm data including the portable device ID when the activity of the owner is lower than the predetermined value, and the first portable device. A second portable device is provided. When the second portable device receives the alarm data, the second portable device transmits an automatic response request to the first portable device together with the portable device ID. Upon receiving the received automatic response request, the first portable device is in the press ON state for a predetermined time.

According to the mobile communication system, it is possible to grasp the activity status of the owner of the portable device.

It is a figure which shows an example of a mobile communication system. It is a figure which shows the internal operation image of a portable device 20. It is a figure explaining the alarm data output of a conductor device 30. It is a figure explaining the automatic voice monitor operation. It is a figure explaining the transmission of the alarm data of a modification.

Hereinafter, examples will be described with reference to the drawings. However, in the following description, the same components may be designated by the same reference numerals and repeated description may be omitted.

FIG. 1 is a diagram showing an example of a mobile communication system.

The mobile communication system 1 of the embodiment includes a base station device 10 and a plurality of mobile station devices B1 to B3 and C1 to C4. Mobile communication-less system 1 conforms to the standards of the Association of Radio Industries and Businesses (for example, ARIB STD-T61 (narrowband digital communication system (SCPC / FDMA) or ARIB STD-T79 (prefecture / municipal digital mobile communication system)). It is a system to do.

The base station device 10 includes an antenna 11 for transmission, an antenna 12 for reception, a wireless device 13 for performing wireless processing, and a control device 14 for performing control processing, and is operated by an operator to issue a command. It is equipped with multiple command desks (not shown) that perform processing such as accepting.

Examples of the mobile station device include in-vehicle mobile station devices B1 to B3 provided in a vehicle such as an automobile, and portable mobile station devices (hereinafter referred to as portable devices) C1 to C4 possessed by a person. , Anything may be used.

The base station device 10 forms a base station zone 2 which is an area for wireless communication, and wirelessly communicates with the mobile station devices B1 to B2 and the portable devices C1 to C3 existing in the base station zone 2.

Further, in the downlink communication from the base station device 10 to the mobile station devices B1 to B2 and the portable devices C1 to C3, the wireless carrier having the frequency F1 is used, and the mobile station devices B1 to B2 and the mobile station devices C1 to C3 to the base station device 10 In the uplink communication to, another radio carrier of frequency F2 is used.

The mobile station devices B1 to B2 and the portable devices C1 to C3 can perform communication by selecting the frequency (channel) of the base station 10 (this communication is referred to as communication via the base station). However, the mobile station device B3 and the portable device C4 located outside the service area of the base station zone 2 that cannot receive the radio waves from the base station 1 cannot communicate via the base station 1. If communication is not possible because it is located outside the base station zone 2 and interferes with group activities, a plurality of mobile station devices B1 to B3 and portable devices C1 to C4 are connected to each other by a predetermined direct wave (for example, frequency). After selecting F3), group activities can be performed (this is called direct communication).

The mobile station device used by the conductor (for example, the portable device C1 or the mobile station device B1) is referred to as a conductor device 30. When members B and C are dispatched to an environment where communication with the conductor device 30 may be interrupted, members B and C use the portable device 20 described later. For example, the portable device 20 used by the member B is the portable device C2 in FIG. 1, and the portable device 20 used by the member C is the portable device C3 in FIG.

Next, the determination of the activity inside the portable device and the alarm notification will be described with reference to FIG. FIG. 2 is a diagram showing an internal operation image of the portable device 20.

As shown in FIG. 2, inside the portable device 20, the CPU 21 periodically collects and holds the data of the 3-axis accelerometer 22. The CPU 21 has a state in which the change (ΔX, ΔY, ΔZ) of the value (Ax, Ay, Az) in the X-axis direction / Y-axis direction / Z-axis direction is lower than the preset threshold value (Tx, Ty, Tz). When (ΔX <Tx, ΔY <Ty, ΔZ <Tz) continues for a certain period of time (Tcp), it is determined that the activity of the member possessing the portable device 20 is low, and the alarm data is notified to the radio unit 23. do.

When the CPU 21 determines that the activity of the member is low, the wireless unit 23 of the portable device 20 automatically wirelessly transmits alarm data (including the portable device ID) by data communication (without being operated by the member). do. By outputting the alarm data from the conductor device 30, the conductor can grasp the members having low activity (for example, the members who cannot move due to unconsciousness or obstacles). The portable device C1 used by the conductor may also have the function of the portable device 20.

Next, the alarm data output will be described with reference to FIG. FIG. 3 is a diagram illustrating the alarm data output of the conductor device 30.

Alarm data is output from the commander device 30 in order to easily grasp the members with low activity. The output method is display on a display device, reading aloud, or the like. The output contents of the alarm data are a portable device ID (identification code), a name, and the like, in addition to the notification that an alarm has occurred.

As shown in FIG. 3, the commander device 30 has a storage unit 31 for storing data, a display unit 32 including a display device such as a liquid crystal display device, a storage unit 33 for storing voice synthesis software, and a speaker for outputting voice. 34 and. The portable device ID, the name, and the reading kana are combined and registered in the storage unit 31 in advance. When the conductor device 30 receives the alarm and the portable device ID, the conductor device 30 searches for the name and the reading pseudonym from the information registered in the storage unit 31, displays the name on the display unit 32, or uses the voice synthesis software of the storage unit 33 to search the reading pseudonym. Is read aloud and output from the speaker 34 to notify the conductor. If the portable device ID does not match the registered information, the number is displayed on the display unit 32, or the number is read out by voice synthesis software and output to the speaker 34.

Next, the automatic voice monitor operation will be described with reference to FIG. FIG. 4 is a diagram illustrating an automatic voice monitor operation.

The conductor device 30, the portable device 20 (portable device C2) used by the member B, and the portable device 20 (portable device C3) used by the member C are in the base station zone 2 for communication via the base station and the base station zone 2. Outside, we communicate directly.

The conductor device 30 (portable device ID = 1), the portable device C2 having an activity lower than a predetermined value (portable device ID = 2), and the portable device C3 having an activity higher than a predetermined value (portable device ID = 3) will be described. .. The conductor device 30 has an automatic response mode function capable of automatically requesting a response to the portable device 20. The portable device 20 has a function of automatically turning on the transmission button (press ON) in response to an automatic response request from the conductor device 30 so that voice can be transmitted.

The conductor who has recognized the alarm data designates the portable device ID having a low activity in the conductor device 30 and sets the automatic response mode (step S11). The conductor presses the send button (press ON operation) while selecting the automatic response mode, calls by voice (step S12), and ends the call (press OFF) (step S13). While the conductor device 30 is in the automatic response mode, an "automatic response request (ID designation of a portable device having a low activity)" is automatically transmitted as data after the end of the call (press OFF) (step S14). The portable device (portable device C2) that receives the "automatic response request" with the same ID will automatically be in the state of being pressed on for a predetermined time (Ton) without any operation by the members, and voice transmission will be possible ( Step S15). A portable device with a different ID (portable device C3) does not automatically turn on the press even if it receives an "automatic response request". The portable device C2 is pressed off after a predetermined time (Ton) from the press ON (step S16). When the conductor is no longer needed, the conductor device 30 cancels the automatic response mode (step S17).

The predetermined time (Ton) is notified to the portable devices C2 and C3 in the "automatic response request" from the conductor device 30. A predetermined time (Ton) may be set in advance in the portable devices C2 and C3, and the value may be specified to be used. The conductor may operate and arbitrarily set a predetermined time (Ton).

As a result, the voice can be monitored even if the member cannot operate the press ON.

According to the embodiment, the conductor can grasp the activity status of the members even in the situation where the communication with the members could not be performed in the past. The voice can be monitored even if the member cannot operate the portable device, and by repeating this, the intention equivalent to the press talk can be confirmed.

<Modification example>
Hereinafter, typical modifications will be illustrated. In the following description of the modified example, the same reference numerals as those in the above-described embodiment may be used for the portions having the same configuration and function as those described in the above-described embodiment. As for the explanation of such a portion, the explanation in the above-described embodiment can be appropriately incorporated within a technically consistent range. Further, a part of the above-described embodiment and all or a part of the modified example may be appropriately and combinedly applied within a technically consistent range.

In the embodiment, the conductor device 30 and the member's portable devices C2 and C3 communicate with each other by communication via the base station inside the base station zone 2 and by direct communication outside the base station zone 2.

However, the distance that can be directly communicated depends on the transmission output of the mobile station device (1 W or the like) and the communication environment (presence or absence of obstacles, etc.). Therefore, in the case of "the distance between the mobile station devices is large", "there is a shield or the like between the mobile station devices", etc., direct communication may not be possible.

Therefore, we will support the smooth activities of the team by temporarily expanding the communicable area by installing a device that relays the direct waves as appropriate. The relay device that receives the direct communication from the mobile station device relays (transmits) the received voice and data by means that does not cause radio wave interference with the direct wave. The relay (received) relay device transmits a wave directly to the mobile station device.

A method of transmitting alarm data of a modified example will be described with reference to FIG. FIG. 5 is a diagram illustrating transmission of alarm data of a modified example.

The first relay device 40 and the second relay device 50 are located between the portable device 20 and the conductor device 30. When the activity of the member is low, the portable device 20 automatically wirelessly transmits alarm data together with the portable device ID (without being operated by the member) in data communication. The first relay device 40 that wirelessly receives the alarm data from the portable device 20 relays the alarm data together with the portable device ID, and further, the received RSSI value indicating the RSSI value of the signal received from the first relay device ID and the portable device 20. To send wirelessly. The second relay device 50, which has received the alarm data wirelessly from the first relay device 40, relays the alarm data together with the portable device ID, the first relay device ID, and the received RSSI value, and further wirelessly transmits the second relay device ID. .. The conductor device 30 (for example, the portable device C1 and the mobile station device B1) receives the alarm data, the portable device ID, the first relay device ID, the received RSSI value, and the second relay device ID.

As a result, the conductor device 30 can transmit voice data and an automatic response request to the portable device 20 to which the direct wave does not reach, using the portable device ID, the first relay device ID, and the second relay device ID.

Further, the location of the portable device 20 that has transmitted the alarm data can be estimated from the first relay device ID and the received RSSI value. That is, it is possible to estimate how far the portable device 20 is from the first relay device 40 from the received RSSI value. The conductor device 30 may display, for example, the position of the first relay device 40 and the estimated distance between the first relay device 40 and the portable device 20.

Although the invention made by the present inventor has been specifically described above based on the embodiment, it is needless to say that the present invention is not limited to the above embodiment and can be variously modified.

For example, in the embodiment, the alarm data is output from the conductor device by display on the display device and reading aloud, but it may be either display on the display device or reading aloud. It may be a buzzer sound, a contact output for an external device, a packet output via LAN, or the like.

Further, in the modified example, an example in which there are two relay devices has been described, but one or three or more may be used.

1 ... Mobile communication system 2 ... Base station zone 10 ... Base station device 11 ... Antenna 12 ... Antenna 13 ... Wireless device 14 ... Control device 20 ... Portable device 21・ ・ ・ CPU
22 ... 3-axis accelerometer 23 ... Radio unit 30 ... Conductor devices B1 to B3 ... Mobile station devices C1 to C4 ... Mobile station device (portable device)

Claims (3)

A first portable device that wirelessly transmits alarm data including a portable device ID when the activity of the owner is lower than a predetermined value.
A second portable device that receives the alarm data from the first portable device, and
Equipped with
When the second portable device receives the alarm data, the automatic response mode in which the portable device ID is specified is set, and when the automatic response mode is set, the press is changed from the press ON state to the press OFF state. An automatic response request is sent to the first portable device together with the portable device ID.
The first portable device is a mobile communication system in which the press is turned on for a predetermined time when the received automatic response request is received. In claim 1,
The first portable device is
Data from the 3-axis accelerometer is collected and held periodically, and the change in the value in the X-axis direction, the change in the value in the Y-axis direction, and the change in the value in the Z-axis direction are all lower than the preset threshold value. A mobile communication system that determines that the activity is low if it continues for a predetermined time. In claim 1 or 2,
The second portable device is
A storage unit that stores the name as a set with the portable device ID,
A display unit that displays the name and
Equipped with
A mobile communication system that receives the alarm data and displays the name on the display unit when the portable device ID included in the alarm data and the portable device ID recorded in the storage unit match.

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