JP6051718B2 - Wireless broadcasting system and wireless broadcasting method - Google Patents

Description

  The present invention relates to a radio broadcast system and a radio broadcast method, and more particularly to a radio broadcast system and a radio broadcast method that suppress waste of a backup power source.

  2. Description of the Related Art In recent years, wireless broadcasting systems that perform emergency broadcasting that conveys disaster information or the like in an emergency and perform normal broadcasting that conveys administrative information, event information, or the like during normal times have become widespread. In this wireless broadcasting system, a master station transmits broadcast contents wirelessly, and a slave station receives the broadcasts wirelessly. For example, the sound of the broadcast contents is loudened by a loudspeaker or the like and notified to the residents and the like.

  A technique relating to such a wireless broadcasting system is disclosed in Patent Document 1. A wireless notification broadcasting system disclosed in Patent Literature 1 includes a center device, a receiving terminal device connected to the center device via a wireless network, a primary battery, a secondary battery, and the like provided in the receiving terminal device. A backup power supply. The center device transmits emergency information such as disaster information and notification information indicating normal information such as administrative information and event information. The receiving terminal device receives the notification information transmitted from the center device and broadcasts this information (notification broadcast). The receiving terminal device can usually be operated by a commercial power source and a backup power source (battery). The receiving terminal device is disposed in, for example, a house of each household or a public facility. Also, when a disaster occurs and residents evacuate to public facilities, etc., the residents etc. listen to the broadcast of information transmitted from the center device at this evacuation site by carrying the receiving terminal device at the evacuation site be able to.

  For example, when a power failure occurs in an area where a receiving terminal device is installed due to an earthquake or the like, the receiving terminal device operates by switching from a commercial power source to a backup power source (battery). Then, emergency information such as disaster information about the earthquake is transmitted from the center device. In addition to the emergency information, normal information such as administrative information and event information is also transmitted from the center device. The receiving terminal device receives and broadcasts emergency information and normal information transmitted from the center device via a wireless network.

JP 2010-166419 A

  The wireless broadcasting system described in Patent Document 1 described above operates by switching to a backup power source (battery) when an earthquake or the like occurs and a power failure occurs in an area where the reception terminal device is installed. . Then, the receiving terminal device receives and broadcasts emergency information and normal information transmitted from the center device via the wireless network. In this way, even when a power failure occurs, this wireless broadcasting system receives and broadcasts normal information with low urgency in addition to emergency information, so that the backup power supply (battery) of the receiving terminal device is wasted. There is a problem that the operation time is shortened.

  An object of the present invention is to provide a wireless broadcasting system and a wireless broadcasting method that solve the above-described problems and suppress waste of a backup power source of a receiving apparatus when a power failure occurs.

  The wireless broadcast system of the present invention receives and broadcasts broadcast information transmitted from a master station, and transmits a battery operation information to the master station when switching from operation by a commercial power source to operation by a battery; and And the master station that stops transmission of a part of the broadcast information when the battery operation information is received from the slave station.

  The wireless broadcasting method of the present invention transmits broadcast information by a master station, receives and broadcasts broadcast information transmitted from the master station by a slave station, and switches from operation by a commercial power source to operation by a battery. Battery operation information is transmitted to the master station, and when the master station receives the battery operation information from the slave station, transmission of a part of the broadcast information is stopped.

  ADVANTAGE OF THE INVENTION According to this invention, when the power failure has generate | occur | produced, the wireless broadcasting system and the wireless broadcasting method which suppress the waste of the backup power supply of the apparatus of the receiving side can be provided.

It is a figure which shows an example of the radio broadcasting system which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the radio broadcasting system which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows an example of operation | movement of the radio broadcasting system which concerns on the 2nd Embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing an example of a wireless broadcast system according to the first embodiment of the present invention.

  The wireless broadcasting system 1 according to the present embodiment is configured by a master station 2 and a slave station 3.

  In this wireless broadcasting system 1, the master station 2 transmits the broadcast content wirelessly, and the slave station 3 receives the broadcast wirelessly. For example, the audio of the broadcast content is transmitted through a loud speaker or the like provided in advance in the slave station 3. This is a system that speaks out and informs residents.

  The master station 2 transmits broadcast information to the slave station 3. Broadcast information includes normal information including emergency information including disaster information, information about the administration of the area (administration information), and information about the event such as the district where the residents live (event information). Further, when the master station 2 receives battery operation information indicating that the slave station 3 is operating with a battery, the master station 2 detects the occurrence of a power outage in the service area, and a part of the broadcast information (for example, the emergency level) Stop sending low normal information). The service area indicates an area where the master station 2 transmits emergency information and normal information.

  The slave station 3 is provided with a battery in advance and is normally operated by a commercial power source and is operated by the battery during a power failure. The slave station 3 receives and broadcasts broadcast information (emergency information and normal information) transmitted from the master station 2. In addition, the slave station 3 transmits battery operation information to the master station 2 when switching from operation by a commercial power source to operation by a battery.

  Here, the operation of the first embodiment will be described. The master station 2 normally transmits emergency information and normal information. Further, the master station 2 transmits a status monitoring command to the slave station 3 periodically, for example, every minute. This regular numerical value may be appropriately changed by the system without being particular about one minute. The slave station 3 normally receives and broadcasts emergency information and normal information transmitted from the master station 2. In addition, the state monitoring command is periodically received from the master station 2, and for example, when the slave station 3 is operated by a commercial power source, commercial power source operation information is obtained. Is transmitted to the master station 2 every time a status monitoring command is received. Here, for example, when an earthquake or the like occurs and a power failure occurs in an area where the slave station 3 is installed, the slave station 3 operates by switching from a commercial power source to a battery. Then, the slave station 3 transmits battery operation information to the master station 2 when receiving the state monitoring command from the master station 2. The master station 2 receives the battery operation information from the slave station 3, determines that a power failure has occurred in the service area, and stops transmitting normal information with a low degree of urgency. The normal information includes, for example, administrative information, event information, and device maintenance confirmation information indicating information for confirming the maintenance of the slave station 3. The device maintenance confirmation information is, for example, a siren sound, red dragonfly music, or a phrase such as “This is a broadcast for confirming the sound emission of the speaker”. By broadcasting this at regular times (12:00 or 17:00), the normality of the speaker can be confirmed. Normal information with low urgency is, for example, event information or device maintenance confirmation information.

  In the above description, the case where there is one slave station 3 has been described, but a plurality of slave stations 3 may exist in the service area. In this case, the master station 2 periodically transmits a state monitoring command to each of the plurality of slave stations 3, and a predetermined ratio (for example, 20%) of the slave stations 3 out of the plurality of slave stations 3 It is determined that a power outage has occurred in the service area by receiving operation information. The predetermined ratio may be appropriately changed depending on the system without being limited to 20%. These slave stations 3 may be, for example, devices having loudspeakers arranged outdoors, or may be receivers having normal speakers. Further, it may be a relay station that relays between the master station 2 and the slave station 3.

  As described above, according to the first embodiment of the present invention, when the slave station 3 is switched from the operation by the commercial power source to the operation by the battery due to the power failure, the battery operation information is transmitted to the master station 2. Then, when the master station 2 receives the battery operation information from the slave station 3, the master station 2 detects the occurrence of a power failure in the service area and stops transmission of normal information with a low degree of urgency.

For this reason, according to the first embodiment of the present invention, when a power failure occurs in the area where the slave station is arranged and the slave station is operated by a battery, the master station Since the transmission is stopped, the slave station does not receive and broadcast normal information with low urgency. For this reason, when the power failure has occurred, the waste of the battery of the slave station can be suppressed.
(Second Embodiment)
FIG. 2 is a diagram illustrating an example of a wireless broadcast system according to the second embodiment of the present invention.

  The second embodiment is a more specific example of the master station 2 of the first embodiment. Therefore, the difference from the first embodiment will be mainly described.

  The wireless broadcasting system 1 according to the present embodiment is configured by a master station 2 and a slave station 3. The master station 2 includes an operation console 4, a remote control device 5, a telephone 6, and a base station 7.

  The console 4 performs an emergency broadcast for transmitting emergency information, a general broadcast for transmitting administrative information, and a device maintenance confirmation broadcast (automatic scheduled broadcast) for transmitting device maintenance confirmation information at a fixed time. In addition, the console 4 periodically transmits a status monitoring command to the slave station 3 and periodically receives battery operation information from the slave station 3 in response to the transmission of the status monitoring command. It is determined that a power outage has occurred, and transmission of normal information with low urgency among normal information is stopped.

  The remote control device 5 is connected to the console 4 and performs an emergency broadcast for transmitting emergency information and a general broadcast for transmitting administrative information via the console 4. The remote control device 5 is installed in a remote place such as a destination engine, for example.

  The telephone 6 is connected to the console 4 via a general telephone line, and performs remote broadcasting via the console 4 in the service area for transmitting, for example, event information for residents.

  The base station 7 is connected to the console 4 and transmits each broadcast performed by the console 4, the remote control device 5, and the telephone 6 to the slave station 3 by radio. Further, a state monitoring command from the console 4 is transmitted to the slave station 3 by radio. Further, the battery operation information transmitted from the slave station 3 is received and output to the console 4.

  Next, the operation of the radio broadcast system according to the second embodiment of the present invention will be described in detail with reference to FIG.

  FIG. 3 is a flowchart showing an example of the operation of the wireless broadcast system according to the second embodiment of the present invention.

  The master station 2 normally transmits emergency information and normal information. The console 4 transmits a state monitoring command to the slave station 3 periodically (for example, every minute) via the base station 7. The slave station 3 normally receives and broadcasts emergency information and normal information transmitted from the master station 2. In addition, a status monitoring command is periodically received from the master station 2, and for example, when the slave station 3 is operated by a commercial power source, commercial power source operation information is obtained, and when the slave station 3 is operated by a battery, battery operation information is obtained. Is transmitted to the master station 2 every time a status monitoring command is received.

  In step S1 of FIG. 3, for example, when an earthquake or the like occurs and a power failure occurs in an area where the slave station 3 is installed, the slave station 3 operates by switching the operating power source from a commercial power source to a battery. Then, the slave station 3 transmits battery operation information to the master station 2 when receiving the state monitoring command from the master station 2.

  In step S2 of FIG. 3, the console 4 receives battery operation information from the slave station 3 via the base station 7, determines that a power failure has occurred in the service area, and stops transmission of normal information with low urgency. To do. That is, the console 4 stops the device maintenance confirmation broadcast transmitted by itself and the district remote broadcast transmitted by the telephone 6. Here, the normal information includes, for example, administrative information transmitted from the console 4, event information, and device maintenance confirmation information, and the normal information with low urgency refers to the device maintenance confirmation broadcast transmitted by the console 4. Indicates.

  In step S3 of FIG. 3, after determining that a power failure has occurred, the console 4 receives battery operation information from the slave station every time a status monitoring command is transmitted, and when a predetermined time has elapsed, the remote control device The general broadcast transmitted by 5 is further stopped. The general broadcast transmitted by the remote control device 5 is a broadcast on administrative information transmitted by the remote control device 5. The predetermined time is, for example, 7 hours, and this value may be appropriately changed depending on the system.

  In the above description, the case where there is one slave station 3 has been described, but a plurality of slave stations 3 may exist in the service area. In this case, the master station 2 periodically transmits a state monitoring command to each of the plurality of slave stations 3, and a predetermined ratio (for example, 20%) of the slave stations 3 out of the plurality of slave stations 3 It is determined that a power outage has occurred in the service area by receiving operation information.

  As described above, according to the second embodiment of the present invention, when the slave station 3 is switched from the operation by the commercial power source to the operation by the battery due to the power failure, the battery operation information is transmitted to the master station 2. Then, when the master station 2 receives the battery operation information from the slave station 3, the master station 2 detects the occurrence of a power failure in the service area and stops transmission of normal information with a low degree of urgency.

  For this reason, according to the second embodiment of the present invention, when a power failure occurs in the area where the slave station is arranged and the slave station is operated by a battery, the master station Since the transmission is stopped, the slave station does not receive and broadcast normal information with low urgency. For this reason, when the power failure has occurred, the waste of the battery of the slave station can be suppressed.

Part or all of the above-described embodiments can be described as in the following supplementary notes, but is not limited thereto.
(Appendix 1)
Receiving and broadcasting broadcast information transmitted from the master station, a slave station that transmits battery operation information to the master station when switching from operation by commercial power supply to operation by battery; and
When receiving the battery operation information from the slave station, the master station to stop transmission of a part of the broadcast information,
A wireless broadcasting system comprising:
(Appendix 2)
The master station transmits a status monitoring command to the slave station, receives the battery operation information from the slave station in response to the transmission of the status monitoring command,
The slave station receives the status monitoring command from the master station, and when the operation is switched to operation by the battery, transmits the battery operation information to the master station.
The wireless broadcasting system according to supplementary note 1, wherein:
(Appendix 3)
A plurality of the slave stations exist in a service area indicating an area transmitted by the master station,
The master station transmits the status monitoring command to each of the plurality of slave stations, and receives the battery operation information from a predetermined percentage of the plurality of slave stations, thereby causing a power failure in the service area. Determining that it has occurred and stopping transmission of part of the broadcast information,
The wireless broadcasting system according to supplementary note 2, wherein
(Appendix 4)
The part of the broadcast information indicates normal information with a low degree of urgency, and the normal information includes administrative information, event information, and device maintenance confirmation information indicating information for confirming the maintenance of the device in the slave station. The normal information with low urgency includes the event information and the device maintenance confirmation information.
The wireless broadcast system according to supplementary note 2 or 3, wherein
(Appendix 5)
The master station is
The general broadcast for transmitting the administrative information and the device maintenance confirmation broadcast for transmitting the device maintenance confirmation information are transmitted, the state monitoring command is transmitted to the slave station, and the state monitoring command is transmitted in response to the transmission of the state monitoring command. An operation console that determines that a power failure has occurred by receiving the battery operation information from a slave station, and that stops transmission of the normal information with low urgency among the normal information;
A remote control device connected to the console and performing the emergency broadcast and the general broadcast for transmitting the emergency information via the console;
A telephone that is connected to the console via a general telephone line and performs remote broadcasting through the console to transmit event information;
A base station that is connected to the console and outputs each broadcast performed by the console, the remote control device, and the telephone;
The wireless broadcast system according to appendix 4, characterized by comprising:
(Appendix 6)
If the console determines that a power outage has occurred, it stops the equipment maintenance confirmation broadcast and the district remote broadcast,
The wireless broadcast system according to supplementary note 5, wherein
(Appendix 7)
The wireless broadcasting system according to claim 6, wherein the console further stops the general broadcasting performed by the remote control device when a predetermined time has elapsed after determining that a power failure has occurred. .
(Appendix 8)
Broadcast information is sent by the master station,
The slave station receives and broadcasts broadcast information transmitted from the parent station, and transmits battery operation information to the parent station when switching from operation by commercial power supply to operation by battery,
When receiving the battery operation information from the slave station by the master station, the transmission of a part of the broadcast information is stopped.
A wireless broadcasting method characterized by the above.
(Appendix 9)
The master station sends a status monitoring command to the slave station,
When the slave station receives the status monitoring command from the master station and switches to operation by the battery, the battery operation information is transmitted to the master station,
The battery operation information is received from the slave station by the master station.
The wireless broadcast method according to appendix 8, wherein
(Appendix 10)
A plurality of the slave stations exist in a service area indicating an area transmitted by the master station,
The master station transmits the status monitoring command to each of the plurality of slave stations, and receives the battery operation information from a predetermined percentage of the plurality of slave stations, thereby causing a power failure in the service area. Determining that it has occurred and stopping transmission of part of the broadcast information,
The wireless broadcasting method according to appendix 9, wherein
(Appendix 11)
The part of the broadcast information indicates normal information with a low degree of urgency, and the normal information includes administrative information, event information, and device maintenance confirmation information indicating information for confirming the maintenance of the device in the slave station. The normal information with low urgency includes the event information and the device maintenance confirmation information.
The wireless broadcasting method according to appendix 9 or 10, characterized by the above.
(Appendix 12)
The wireless broadcasting method according to appendix 11, wherein the master station further stops communication of the administrative information when a predetermined time has elapsed after determining that a power failure has occurred.

DESCRIPTION OF SYMBOLS 1 Radio broadcasting system 2 Master station 3 Slave station 4 Console 5 Remote control device 6 Telephone 7 Base station

Claims (10)

Receiving and broadcasting broadcast information transmitted from the master station, a slave station that transmits battery operation information to the master station when switching from operation by commercial power supply to operation by battery; and
When receiving the battery operation information from the slave station, the master station to stop transmission of a part of the broadcast information,
A wireless broadcasting system comprising: The master station transmits a status monitoring command to the slave station, receives the battery operation information from the slave station in response to the transmission of the status monitoring command,
The slave station receives the status monitoring command from the master station, and when the operation is switched to operation by the battery, transmits the battery operation information to the master station.
The wireless broadcasting system according to claim 1. A plurality of the slave stations exist in a service area indicating an area transmitted by the master station,
The master station transmits the status monitoring command to each of the plurality of slave stations, and receives the battery operation information from a predetermined percentage of the plurality of slave stations, thereby causing a power failure in the service area. Determining that it has occurred and stopping transmission of part of the broadcast information,
The wireless broadcasting system according to claim 2. The part of the broadcast information indicates normal information with a low degree of urgency, and the normal information includes administrative information, event information, and device maintenance confirmation information indicating information for confirming the maintenance of the device in the slave station. The normal information with low urgency includes the event information and the device maintenance confirmation information.
The wireless broadcasting system according to claim 2 or 3, wherein The master station is
The general broadcast for transmitting the administrative information and the device maintenance confirmation broadcast for transmitting the device maintenance confirmation information are transmitted, the state monitoring command is transmitted to the slave station, and the state monitoring command is transmitted in response to the transmission of the state monitoring command. An operation console that determines that a power failure has occurred by receiving the battery operation information from a slave station, and that stops transmission of the normal information with low urgency among the normal information;
Is connected to the console, a remote control device for performing said general broadcast emergency broadcast for transmitting emergency information via the console,
A telephone that is connected to the console via a general telephone line and performs remote broadcasting through the console to transmit event information;
A base station that is connected to the console and outputs each broadcast performed by the console, the remote control device, and the telephone;
The wireless broadcasting system according to claim 4, further comprising:

If the console determines that a power outage has occurred, it stops the equipment maintenance confirmation broadcast and the district remote broadcast,
The wireless broadcasting system according to claim 5.   The wireless broadcasting according to claim 6, wherein the console further stops the general broadcasting performed by the remote control device when a predetermined time has elapsed after determining that a power failure has occurred. system. Broadcast information is sent by the master station,
The slave station receives and broadcasts broadcast information transmitted from the parent station, and transmits battery operation information to the parent station when switching from operation by commercial power supply to operation by battery,
When receiving the battery operation information from the slave station by the master station, the transmission of a part of the broadcast information is stopped.
A wireless broadcasting method characterized by the above. The master station sends a status monitoring command to the slave station,
When the slave station receives the status monitoring command from the master station and switches to operation by the battery, the battery operation information is transmitted to the master station,
The battery operation information is received from the slave station by the master station.
The wireless broadcasting method according to claim 8. A plurality of the slave stations exist in a service area indicating an area transmitted by the master station,
The master station transmits the status monitoring command to each of the plurality of slave stations, and receives the battery operation information from a predetermined percentage of the plurality of slave stations, thereby causing a power failure in the service area. Determining that it has occurred and stopping transmission of part of the broadcast information,
The wireless broadcasting method according to claim 9.

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