JP2012151558A - Wireless communications system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that it takes a time for sound announcement from a master station to a slave station, which causes that the sound announcement at the slave station may delay for announcements requiring urgency, such as an emergency earthquake alert.SOLUTION: A wireless communications system has a master station connected with a slave station by wireless, and a distribution device connected with the slave station by wire. The master station receives first distribution information from external, and transmits second distribution information by wireless to the slave station based on the first distribution information. The distribution device receives third distribution information from external, and transmits fourth distribution information by wire to the slave station based on the third distribution information. The slave station is configured to have: a first reception unit receiving the second distribution information transmitted from the master station; a second reception unit receiving the fourth distribution information transmitted from the distribution device; a slave station controller performing exclusive control preventing the second distribution information from being accepted if the fourth distribution information has been received, and producing a sound signal based on the second distribution information or the fourth distribution information; and a loudspeaker outputting the produced sound signal.

Description

  The present invention relates to a wireless communication system, for example, a connection between an outdoor loudspeaker station in a disaster prevention radio system such as a municipal disaster prevention radio broadcast system and a first external alarm system such as J-ALERT (National Instantaneous Alarm System). And connection with a second external alarm system other than the first external alarm system. The disaster prevention radio system is installed, for example, in units of municipalities, and transmits information on disaster prevention to local residents using an outdoor loudspeaker or the like.

  As a method of transmitting information in a conventional wireless communication system, for example, a municipal disaster prevention digital wireless communication system is known. In this municipal disaster prevention digital wireless communication system, an emergency information is transmitted from a master station to a slave station (outdoor loudspeaker station) installed outdoors and equipped with a loudspeaker, and the emergency information is received. The slave station transmits urgent information and the like to the local residents by voice notification using a loudspeaker. In the following Patent Document 1, for example, as a disaster prevention radio system installed in a municipal unit, a master station obtains a disaster bulletin from J-ALERT (National Instantaneous Warning System), and a plurality of slave stations (mobile stations) from the master station ) Is described.

  FIG. 5 is a diagram showing a system in connection between a municipal disaster prevention radio broadcast system (hereinafter, broadcast system) and J-ALERT (National Instantaneous Warning System). In FIG. 5, 110 is a master station facility, 140 is a J-ALERT facility, and 150 is a slave station facility. The master station facility 110 includes an operation console 120 and a wireless transmission / reception device 130. The J-ALERT equipment 140 includes a J-ALERT reception equipment 141, an automatic starter 142, and a CS (communication satellite) antenna 143. The slave station facility 150 includes an outdoor loudspeaker slave 151 and a door-to-door receiver 152.

First, the operation of the broadcast system will be described. In the system configured as shown in FIG. 5, the console 120 transmits various control signals including an activation signal for activating the slave station to the wireless transmission / reception device 130, and voices such as emergency information by the operator. Sends out signals. The wireless transmission / reception apparatus 130 receives various control signals including an activation signal from the console 120 and audio signals such as emergency information, and activates the local station equipment 150 such as the outdoor loudspeaker slave 151 and the door-to-door receiver 152. Various control signals including signals and voice signals such as emergency information are transmitted and received wirelessly.
The wireless transmission / reception device 130 includes a control unit and a wireless unit, and the control unit receives and processes a control signal and an audio signal from the console 120, and the wireless unit transmits the control signal and the audio signal to the slave station 150. It is. The outdoor loudspeaker slave 151 and the door-to-door receiver 152 which are the slave station facilities 150 receive the control signal and the voice signal sent from the wireless transmission / reception device 130, convert the voice signal into voice, and output the voice through a speaker. . The broadcast system uses these devices to notify the residents of the contents of reports such as emergency information from the master station 110 via the slave station device 150.

Next, the J-ALERT equipment 140 will be described. The CS antenna 143 receives J-ALERT emergency information sent from the fire department. The J-ALERT receiving equipment 141 demodulates, analyzes and processes the emergency information received by the CS antenna 143. The automatic activation device 142 transmits an audio signal and an activation signal corresponding to the signal analyzed and processed by the J-ALERT reception equipment 141 to the console 120.
The connection procedure between J-ALERT and the broadcast system will be described with reference to FIG. As shown in FIG. 5, for example, emergency information from the Japan Meteorological Agency or the Cabinet Secretariat is sent to each municipality as distribution information 11 by broadcast using satellite communications. Next, the CS antenna 143 of the J-ALERT equipment 140 installed in the municipal office and the J-ALERT receiving equipment 141 receive and analyze emergency information from the fire department. The voice signal 12 corresponding to the activation signal and the emergency information is sent to the console 120 of the information system. Upon activation, the console 120 responds to emergency information from J-ALERT via the radio transceiver 130 by the slave station equipment 150 (outdoor loudspeaker slave 151 or door-to-door receiver 152) installed in the municipality. Report the voice signal to the residents.

  The connection procedure between J-ALERT and the broadcast system will be described in more detail with reference to FIG. In FIG. 6, the J-ALERT equipment 140 receives a J-ALERT signal, which is distribution information from the fire department (S611 in FIG. 6). When receiving the J-ALERT signal, the J-ALERT equipment 140 sends an activation signal to the console 120 (S612). The console 120 that has received the activation signal S613 performs notification processing (transmission of activation signal to the wireless transmission / reception device 130) to the wireless transmission / reception device 130 (S614). When receiving the notification process (S614), the wireless transmission / reception device 130 activates the wireless transmission / reception device 130 and becomes ready for transmission / reception. When the transmission / reception operation is enabled, the wireless transmission / reception device 130 returns a response signal indicating that the transmission / reception operation is possible to the console 120 (S615). Upon receiving the response S615, the console 120 transmits a slave station call signal to the slave station equipment 150 via the wireless transmission / reception device 130 (S616).

  When the slave station call signal is received, the called slave station equipment 150 (the outdoor loudspeaker slave station 151 and the door-to-door receiver 152) establishes a line from the standby (standby) state so far, and enters a reportable state. (S617).

After transmitting the slave station calling signal to the slave station equipment 150, the wireless transmission / reception device 130 transmits a status notification signal indicating that the voice signal can be transmitted to the console 120 (S618). . Upon receiving the status notification signal, the console 120 enters a reportable state in which the voice signal from the J-ALERT equipment 140 can be received and processed (S619). It transmits with respect to the equipment 140 for J-ALERT (S620). When receiving the report enable signal, the J-ALERT equipment 140 transmits an audio signal to the console 120 (S621). Upon receiving the audio signal S622 from the J-ALERT facility 140, the console 120 transmits the audio signal S623 to the wireless transmission / reception device 130. Upon receiving the audio signal S623 from the console 120, the wireless transmission / reception device 130 transmits the audio signal S624 to the slave station facility 150. When receiving the audio signal S624, the slave station facility 150 outputs the audio based on the audio signal S624 from the speaker (S625).
As described above, the communication procedure between the master station and the slave station is established. That is, a communication procedure between the console 120 and the wireless transmission / reception device 130, a communication procedure between the wireless transmission / reception device 130 and the slave station facility 150, and the like are established.

JP 2008-306262 A

  With conventional communication from a master station to a slave station, it takes time to establish a communication procedure between the master station and the slave station. In particular, it takes time to establish a communication procedure such as notification processing between the console and the wireless transmission / reception device. For this reason, after receiving an emergency call from outside the J-ALERT equipment, etc., it takes time to make a voice call at the slave station. There was a problem of becoming.

  The present invention was made in order to solve such a conventional problem. After an emergency call is issued, the time until a voice call is made at a slave station is shortened, and an emergency call is required. However, an object of the present invention is to provide a wireless communication system that functions effectively.

In the present invention, in order to achieve the above-mentioned object, distribution information such as emergency information from the outside is reported wirelessly from the master station to the slave station, and distribution information such as emergency information from the outside is separated from the master station. A message is sent from the distribution device to the slave station by wire. A typical configuration of the present invention for solving the above problems is as follows. That is,
A slave station capable of outputting audio, a master station connected to the slave station by radio, and a distribution device connected to the slave station by wire, and transmitting distribution information from the master station or the distribution device to the slave station And a wireless communication system for outputting the distribution information received by the slave station by voice,
The master station receives the first distribution information from the outside, and transmits the second distribution information to the slave station wirelessly based on the first distribution information,
The distribution device receives third distribution information from the outside, and transmits fourth distribution information to the slave station by wire based on the third distribution information,
The slave station includes a first receiver that receives the second distribution information transmitted from the parent station, a second receiver that receives the fourth distribution information transmitted from the distribution device, and A slave station control unit that performs exclusive control not to accept the second distribution information when the fourth distribution information has been received, and creates an audio signal based on the second distribution information or the fourth distribution information; And a speaker for outputting the created audio signal.

  According to the invention of the present application, since the distribution information such as emergency information from the outside is notified to the slave station from a distribution device different from the master station by wire, the emergency information is issued from the emergency information announcement as compared with the loudspeaking notification in the conventional wireless communication system. The time to voice report at the station can be greatly shortened. Also, as in the past, since emergency information and other distribution information from outside is reported wirelessly from the master station to the slave station, emergency information can be reported as usual even when the wired line is disconnected due to an emergency disaster. it can.

It is a figure which shows the structural example of the radio | wireless communications system in the Example of this invention. It is a figure which shows the structure of the outdoor loudspeaker station in the Example of this invention. It is a figure which shows the communication procedure establishment operation | movement between a main | base station and a delivery apparatus, and an outdoor loudspeaker station in the Example of this invention. It is a figure which shows the communication procedure establishment operation | movement between a main | base station and a delivery apparatus, and an outdoor loudspeaker station at the time of the wire line disconnection between the delivery apparatus of an Example of this invention and an outdoor loudspeaker station. It is a figure which shows the structural example of the radio | wireless communications system in a prior art. It is a figure which shows the flow of the signal until the communication procedure establishment between a parent station and a slave station in a prior art.

  A wireless communication system as an example of an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram illustrating a configuration example of a radio communication system according to an embodiment of the present invention, for example, a municipal disaster prevention administrative radio system. The same components as those of the wireless communication system in the related art described with reference to FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. As shown in FIG. 1, the wireless communication system of this example includes a master station 110, a distribution device 20, and a slave station 50. The master station 110 is usually installed in a building of an administrative authority such as a disaster prevention center, city hall or town / village office. Although only one slave station 50 is shown in FIG. 1, a plurality of slave stations 50 can exist. The master station 110 includes, for example, a J-ALERT facility 140 that receives first urgent distribution information such as an emergency earthquake bulletin from an external information source such as J-ALERT (National Instantaneous Warning System), and an operator. Includes a console 120 that creates distribution information and performs manual broadcasting or automatic broadcasting by setting registration, and a wireless transmission / reception device 130 that transmits and receives various types of information to and from the slave station 50.

  The console 120 is used by an operator to manually create distribution information and broadcast, and includes input means such as a keyboard for the operator to input and display output means such as an LCD display. Further, the console 120 transmits various control signals including an activation signal for activating the slave station, an audio signal, and the like to the wireless transmission / reception device 130.

  The J-ALERT equipment 140 includes a receiving antenna 143, a J-ALERT receiving equipment 141, and an automatic activation device 142. The antenna 143 is, for example, a CS (communication satellite) antenna, and receives first distribution information that is emergency information from an external information source such as J-ALERT (National Instantaneous Warning System). The J-ALERT reception equipment 141 analyzes the demodulated and demodulated signal from the first distribution information received by the antenna 143, and sends the analyzed signal to the automatic activation device 142. Receiving the analyzed signal, the automatic activation device 142 calls an audio signal corresponding to the stored first distribution information, and creates an activation signal for activating the wireless transmission / reception device 130.

  The wireless transmission / reception device 130 performs wireless transmission / reception with the slave station 50, and transmits second distribution information to the slave station 50 based on the first distribution information received by the J-ALERT equipment 140. For example, the data is transmitted to the outdoor loudspeaker station 30.

  The distribution device 20 performs transmission by wire such as an NTT (registered trademark) dedicated line or a regional intranet to the outdoor loudspeaker station 30. In this example, the distribution device 20 is an external device that is different from the external information source of the master station 110. Based on the third distribution information such as the earthquake early warning 14 received from the information source, the fourth distribution information such as the warning telegram 15 is transmitted to the outdoor loudspeaker station 30. In this example, the outdoor loudspeaker slave station 30 receives the fourth distribution information using the connection adapter 40.

FIG. 2 is a diagram showing the configuration of the outdoor loudspeaker station in the embodiment of the present invention. As shown in FIG. 2, the outdoor loudspeaker slave station 30 includes a first receiver 31 that receives a radio signal from the master station 110, a second receiver 32 that receives a wired signal from the distribution device 20, and an outdoor loudspeaker. The overall operation of the slave station 30 is controlled, and when the fourth distribution information has been received, the second distribution information is not accepted and the second distribution information transmitted from the master station 110 is controlled. The slave station control unit 33 that converts the fourth distribution information transmitted from the distribution device 20 into an audio signal, the loudspeaker unit 34 that amplifies (speaks) the audio signal output from the slave station control unit 33, and is amplified. And a speaker 35 for outputting the sound signal as sound. In this example, the second receiving unit 32 is configured as the connection adapter 40 shown in FIG.
The connection adapter 40 stores an audio signal corresponding to the type of emergency earthquake warning that is the fourth distribution information. When the fourth distribution information is received, the corresponding audio signal is called and the activation signal is called. It can also be configured to output to the slave station controller 33.

Next, the communication procedure establishment operation between the master station 110 and the distribution device 20 and the outdoor loudspeaker station 30 corresponding to the distribution information such as the earthquake early warning will be described with reference to FIG. FIG. 3 is a diagram showing a communication procedure establishing operation between the master station 110 and the distribution device 20 and the outdoor loudspeaker station 30.
In FIG. 3, for example, the distribution device 20 of an earthquake early warning distributor receives an earthquake early warning that is distribution information issued by the Japan Meteorological Agency (S <b> 41 in FIG. 3). When the earthquake early warning is received, the distribution device 20 performs an information distribution operation to the outdoor loudspeaker station 30 (S42), and transmits distribution information as an alarm signal (S43). The alarm signal distributed to the outdoor loudspeaker station 30 is received by the second receiving unit 32 of the outdoor loudspeaker station 30, and converted into an activation signal and an audio signal to the outdoor loudspeaker station 30 by the slave station control unit 33. . Based on this activation signal, the outdoor loudspeaker slave station 30 prepares for self-reporting to be reported from its own station (S44), and outputs sound from the speaker 35 (S45).
In addition, when the outdoor loudspeaker station 30 receives an alarm signal from the distribution device 20, the outdoor loudspeaker station 30 performs exclusive control so as not to accept a control signal from the wireless transmission / reception device 130 (S46), and performs outdoor broadcasting that performs local broadcasting. Priority is given to the report of the loudspeaker slave station 30.

Next, the operation of the master station 110 corresponding to emergency information such as J-ALERT will be described. In FIG. 3, the J-ALERT equipment 140 receives a J-ALERT signal, which is distribution information from the fire department (S11 in FIG. 3). When receiving the J-ALERT signal, the J-ALERT equipment 140 sends an activation signal to the console 120 (S12). The console 120 that has received the activation signal S13 performs notification processing (transmission of activation signal to the wireless transmission / reception device 130) to the wireless transmission / reception device 130 (S14). When receiving the notification process (S14), the wireless transmission / reception device 130 activates the wireless transmission / reception device 130 and enters a state where transmission / reception is possible. When the transmission / reception operation is enabled, the wireless transmission / reception device 130 returns a response signal to the console 120 that the transmission / reception operation is possible (S15). Upon receiving the response S15, the console 120 performs call control on the wireless transmission / reception device 130 (S16), and the wireless transmission / reception device 130 performs call processing on the outdoor loudspeaker station 30 (S17).
However, this calling process (S17) is not accepted by the outdoor loudspeaker station 30 due to the exclusive control (S46) of the outdoor loudspeaker station 30 described above.

The wireless transmitting / receiving apparatus 130 performs a calling process on the outdoor loudspeaker station 30 (S17), and then transmits a status notification signal indicating that a voice signal can be transmitted to the console 120 (S18). . Upon receiving the status notification signal, the console 120 enters a reportable state in which the voice signal from the J-ALERT equipment 140 can be received and processed (S19), and a report enable signal indicating that the report is possible, It transmits with respect to the equipment 140 for J-ALERT (S20). When receiving the report enable signal, the J-ALERT equipment 140 transmits an audio signal to the console 120 (S21). When receiving the audio signal S22 from the J-ALERT equipment 140, the console 120 transmits the audio signal S23 to the wireless transmission / reception device 130. When receiving the audio signal S23 from the console 120, the wireless transmission / reception device 130 transmits the audio signal S24 to the outdoor loudspeaker station 30, but cannot be accepted by the outdoor loudspeaker station 30 due to the above-described exclusive control. .
When receiving the call process from the wireless transmission / reception device 130 during the exclusive control, the slave station control unit 33 of the outdoor loudspeaker slave station 30 wirelessly notifies the master station 110 that the emergency earthquake warning process is being performed. It may be configured. In this case, the console 120 that has received the notification determines that reporting is not possible, displays that fact on the display unit of the console 120, and the master station 110 does not perform the processing of S19 to S24 in FIG. Thereby, the operator of the console 120 can confirm that the report of the earthquake early warning has already been implemented.

Next, the operation when the wired line from the distribution device 20 to the outdoor loudspeaker station 30 is disconnected will be described with reference to FIG. FIG. 4 is a diagram illustrating an operation for establishing a communication procedure between the master station 110 and the distribution device 20 and the outdoor loudspeaker station 30 when the wired line between the distribution device 20 and the outdoor loudspeaker station 30 is disconnected. In this case, a conventional broadcast system using the J-ALERT equipment 140 and the master station 110 is used.
In FIG. 4, for example, the distribution device 20 of an emergency earthquake bulletin distributor receives an emergency earthquake bulletin that is distribution information issued by the Japan Meteorological Agency (S <b> 141 in FIG. 4). When the earthquake early warning is received, the distribution device 20 performs an information distribution operation to the outdoor loudspeaker station 30 (S142), and transmits distribution information as an alarm signal (S143). However, since the wired line from the distribution device 20 to the outdoor loudspeaker station 30 is disconnected, the alarm signal is not delivered to the outdoor loudspeaker station 30. Therefore, exclusive control of the outdoor loudspeaker station 30 is not performed.
Note that the slave station control unit 33 of the outdoor loudspeaker slave station 30 monitors a health check signal periodically transmitted from the distribution device 20, and can determine that the line is disconnected when the health check signal is interrupted.

Next, the operation of the master station 110 corresponding to emergency information such as J-ALERT will be described. In FIG. 4, the J-ALERT equipment 140 receives a J-ALERT signal, which is distribution information from the fire department (S111 in FIG. 4). When the J-ALERT signal is received, the J-ALERT equipment 140 sends an activation signal to the console 120 (S112). The console 120 that has received the activation signal S113 performs notification processing (transmission of activation signal to the wireless transmission / reception device 130) to the wireless transmission / reception device 130 (S114). When receiving the notification process (S114), the wireless transmission / reception device 130 activates the wireless transmission / reception device 130 and becomes ready for transmission / reception. When the transmission / reception operation is enabled, the wireless transmission / reception device 130 returns a response signal indicating that the transmission / reception operation is possible to the console 120 (S115). Upon receiving the response S115, the console 120 performs call control on the wireless transmission / reception device 130 (S116a), and the wireless transmission / reception device 130 performs call processing on the outdoor loudspeaker station 30 (S116b).
When the calling process (S116b) is received, the called outdoor loudspeaker station 30 establishes a line from the standby (standby) state up to that point and becomes in a reportable state (S117).

  The wireless transmission / reception apparatus 130 performs a calling process on the outdoor loudspeaker station 30 (S116b), and then transmits a status notification signal indicating that a voice signal can be transmitted to the console 120 (S118). . When the status notification signal is received, the console 120 enters a reportable state in which the voice signal from the J-ALERT equipment 140 can be received and processed (S119), and a report enable signal indicating that the report is possible, It transmits with respect to the equipment 140 for J-ALERT (S120). When receiving the report enable signal, the J-ALERT equipment 140 transmits an audio signal to the console 120 (S121). Upon receiving the audio signal S122 from the J-ALERT equipment 140, the console 120 transmits the audio signal S123 to the wireless transmission / reception device 130. When receiving the audio signal S123 from the console 120, the wireless transmission / reception device 130 transmits the audio signal S124 to the outdoor loudspeaker station 30. When receiving the audio signal S124, the outdoor loudspeaker slave station 30 outputs the audio based on the audio signal S124 from the speaker (S125).

  As described above, the time required for the notification from the outdoor loudspeaker station 30 can be shortened by the delivery of the earthquake early warning via a wired line. Furthermore, since the notification by the broadcast system can be performed as usual even when the wired line is disconnected, it is possible to reliably transmit information such as an urgent notification.

Note that the present invention is understood not only as a system for executing the processing according to the present invention, but also as an apparatus and method, a program for realizing such a method and system, and a recording medium for recording the program. can do.
Further, the present invention may be configured such that the CPU performs control by executing a control program stored in a memory, or may be configured as a hardware circuit.
Furthermore, the present invention is not limited to the above-described embodiments, and can be implemented with various modifications. For example, the external system connected to the master station 110 is not limited to J-ALERT, and may be another system (for example, a system in another area or a higher system).

  20 .. Distribution device, 30 .. Outdoor loudspeaker, 31 .. First receiver, 32 .. Second receiver, 33 .. Slave controller, 34 .. Loudspeaker, 35. · · Antenna, 40 · · Connection adapter, 50 · · Slave station equipment, 110 · · Master station equipment, 120 · · Console, 130 · · Wireless transceiver, 140 · · J-ALERT equipment, 141 · · J -ALERT receiving equipment, 142 ... automatic starter, 150 ... slave station equipment.

Claims (1)

A slave station capable of outputting audio, a master station connected to the slave station by radio, and a distribution device connected to the slave station by wire, and transmitting distribution information from the master station or the distribution device to the slave station And a wireless communication system for outputting the distribution information received by the slave station by voice,
The master station receives the first distribution information from the outside, and transmits the second distribution information to the slave station wirelessly based on the first distribution information,
The distribution device receives third distribution information from the outside, and transmits fourth distribution information to the slave station by wire based on the third distribution information,
The slave station includes a first receiver that receives the second distribution information transmitted from the parent station, a second receiver that receives the fourth distribution information transmitted from the distribution device, and A slave station control unit that performs exclusive control not to accept the second distribution information when the fourth distribution information has been received, and creates an audio signal based on the second distribution information or the fourth distribution information; And a speaker for outputting the created audio signal.

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