JP2006094209A - Disaster prevention radio communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To always quickly and accurately grasp the position of a slave station serving as a caller in a base station, when a call from the slave station is made, and consequently to deal with it quickly and appropriately. <P>SOLUTION: When a telephone conversation button for an answerback call is operated in each field-type slave station FS1-FSn, a slave station monitoring response signal comprising a slave station's ID is generated, and is transmitted to a boss station BS. A console 1 of the base station BS receives a slave station monitoring response signal sent from each field-type station FS1-FSn, and extracts a slave station's ID from this signal. Along with reading out positional data of a corresponding slave station from a slave station management table 19a on the basis of this slave station's ID, the console 1 reads out map data comprising an installation position of the corresponding slave station from a map database 19b. On the basis of these read map data and positional data, the console 1 generates display data for displaying the installation position of the field-type slave station of the caller on a map, and displays these generated display data in its display section 18. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disaster prevention radio system that selectively calls and reports a plurality of slave stations from a master station, and more particularly to a disaster prevention radio system that has an answer back function from a slave station to a master station.

A digital broadcast communication system for disaster prevention administration is generally configured by adding a master station and a plurality of slave stations, or a relay station thereto. The master station is installed in, for example, a municipal office, and transmits a call signal and a notification signal to the slave station. The relay station is installed in a place with good visibility such as Yamagami, and the relay wave transmitted from the parent station is frequency-converted into a broadcast wave and transmitted to the child station. Each slave station enters a report operation state when a call signal addressed to itself is sent from the master station, receives a report signal sent from the master station in this state, and outputs the report content from the speaker To inform the residents (see, for example, Non-Patent Document 1).
“Municipal digital broadcast communication system recommended standard (draft)” Radio Industry March, 2003.

  By the way, there are two types of slave stations, the outdoor type and the door-to-door type, and among these, the outdoor type slave station has a so-called answer back function that enables a call by calling the master station according to the operation of the residents. Note that the door-to-door type slave station can only receive a report signal from the master station and output a loud sound.

  However, in the conventional system having the answer back function, a call from the slave station to the master station is performed by voice call. For this reason, the system operator of the master station cannot grasp the location of the inhabitant until actually making a call with the inhabitant, which may cause a delay in grasping the situation and implementing countermeasures. For example, if the river level rises abnormally or the landslide occurs at the location where the caller's inhabitant is present, the system operator may have to know the location of the abnormality or disaster from the conversation with the caller's inhabitant. I don't get it. For this reason, it takes time to specify the location of the site, and when the residents are upset, the location may not be specified, so the response of dispatching rescue personnel to the site is delayed.

  The present invention has been made paying attention to the above circumstances, and the object of the present invention is to always quickly and accurately grasp the position of the caller's slave station in the master station when a call from the slave station occurs. Thus, an object of the present invention is to provide a disaster prevention radio system that enables quick and appropriate response.

  In order to achieve the above object, the present invention provides a disaster prevention radio system having a function of making a call from a slave station to a master station and enabling voice communication between the slave station and the master station. A control signal transmitting means is provided in the station, and by this control signal transmitting means, a control signal including identification information of the own station is generated in response to a call operation for calling the master station from the slave station, and the generated control signal is Transmit to the master station. On the other hand, in the master station, a first storage means for storing map data of the management area and a second memory for storing position data representing the installation positions of the slave stations in association with the identification information of the plurality of slave stations, respectively Means and a slave station position display control means. Then, the slave station identification information is extracted from the control signal transmitted from the slave station at the time of calling, and the corresponding slave station position data is extracted from the second storage means based on the extracted slave station identification information. And generating and displaying the display data in which the installation position of the calling station is displayed on the map based on the read position data and the map data read from the first storage means. It is a thing.

  Therefore, according to the present invention, when a call operation for answerback is performed in the slave station, a control signal including identification information of the caller slave station is sent to the master station together with the call signal, and the control signal is transmitted to the master station. Based on the slave station identification information included in the signal, display data in which the installation position of the corresponding slave station is displayed on a map is created and displayed. For this reason, the system operator of the master station can grasp the current position of the caller from the display data before making a call with the caller, and based on the grasped position and the content of the caller's report, This makes it possible to implement various measures quickly and accurately.

  Further, the present invention is characterized in that the master station further includes means for displaying related information related to the caller's slave station whose installation position is displayed on the map superimposed on or displayed on the display data. With this configuration, the system operator of the parent station can grasp not only the current position of the calling slave station but also related information related to the slave station, thereby more accurately grasping the local situation. It becomes possible. Related information related to the slave station includes, for example, the operation status of the slave station, the past call history from the slave station, the address of the place where the slave station is installed, the terrain, the past disaster occurrence history, etc. Good.

  Furthermore, the present invention is characterized in that, in the display means for displaying data, a mark is displayed at the installation position of the calling station on the map, and the display of this mark is dynamically changed. Examples of the form of dynamic change include blinking, color change, mark change, and the like. With this configuration, the system operator of the master station can recognize the position of the caller slave station more quickly and clearly.

Therefore, according to the present invention, in response to a call operation in the slave station, a control signal including identification information of the caller slave station is transmitted to the master station together with the call signal, and the slave station identification information included in the control signal is transmitted to the master station. Based on the above, display data is created and displayed on the map showing the installation position of the corresponding slave station.
Therefore, according to the present invention, when a call from a slave station occurs, the master station can always quickly and accurately grasp the position of the caller slave station, thereby enabling quick and appropriate response. Disaster prevention radio system can be provided.

  FIG. 1 is a schematic configuration diagram showing an embodiment of a disaster prevention radio system according to the present invention. The system of this embodiment includes a master station BS, a relay station RS, and a plurality of slave stations, and is bidirectional or unidirectional between the master station BS and each slave station or directly via the relay station RS. Perform wireless communication. As a wireless communication system, a TDMA-TDD (Time Division Multiple Access-Time Division Duplex) system is used.

  The slave stations include outdoor-type communication devices (hereinafter referred to as outdoor-type slave stations) FS1 to FSn and indoor-type communication devices (hereinafter referred to as door-to-door receivers) GS1 to GSm. The outdoor type slave stations FS1 to FSn are installed, for example, in a schoolyard or the like, and are configured as follows. FIG. 2 is a block diagram showing the functional configuration.

  The outdoor type slave stations FS1 to FSn include an antenna 31 and a radio unit 32 for radio transmission / reception, a slave station control unit 33, and an ID storage unit 38, and an output interface 34 for outputting a report loudly and an outdoor unit A loudspeaker 35, and a microphone 36 and an input interface 37 used for an answer back call are provided.

  The antenna 31 and the radio unit 32 receive and demodulate the downlink radio signal transmitted from the master station BS, and input the calling signal and the notification signal reproduced by this demodulation to the slave station control unit 33. At the same time, an uplink radio signal modulated by the audio signal output from the slave station control unit 33 is generated, and the generated uplink radio signal is converted into a radio frequency assigned to the system, and is transmitted from the antenna 31 to the master station. Send to BS.

  The slave station control unit 33 includes, for example, a microcomputer as a main control unit, and has an answer back control function 33a in addition to the call notification control function. All of these control functions are realized by causing a CPU (Central Processing Unit) to execute an application program stored in a program memory (not shown).

  The call notification control function decodes the call signal input from the wireless unit 32 and then compares the slave station ID included in the decoded data with its own slave station ID stored in the ID storage unit 38. When both IDs match, the notification operation state is entered. In this state, the notification signal input from the wireless unit 32 is decoded and supplied to the output interface 34. The output interface 34 converts the supplied notification signal into an analog signal, amplifies the notification signal to a predetermined level, and outputs the amplified notification signal from the outdoor loudspeaker 35.

  When a send button (not shown) is operated, the answer back control function 33a generates a voice call signal and transmits this signal from the radio unit 32 to the master station BS. At the same time, a slave station monitoring response signal is generated in accordance with the operation of the transmission button (microphone press). The slave station ID stored in the ID storage unit 38 is inserted into this slave station monitoring response signal. Then, the generated slave station monitoring response signal is transmitted from the radio unit 32 to the master station BS.

  The door-to-door receivers GS1 to GSm have only a receiving function and are installed in each residence of the residents. Similarly to the outdoor type slave stations FS1 to FSn, the individual receivers GS1 to GSm are in a notification operation state when the ringing signal arrived by the downlink radio signal from the master station BS includes the slave station ID of its own device. In this state, the notification signal arriving from the master station BS by the downlink radio signal is received and demodulated, and is output from the speaker.

  The relay station RS is installed in a place with good visibility such as Yamagami, and includes first and second relay radio apparatuses 3 and 4. The first relay radio apparatus 3 receives the downlink radio signal transmitted by the relay wave from the radio apparatus 2 of the master station BS, and passes the received downlink radio signal to the second relay radio apparatus 4. The second relay radio device 4 frequency-converts the downlink radio signal passed from the first relay radio device 3 to a broadcast frequency, and transmits the frequency-converted downlink radio signal to the slave station.

On the other hand, the master station BS is installed in a municipal office or the like, and includes a console 1 and a wireless device 2. FIG. 4 is a block diagram showing the functional configuration.
The console 1 includes a master station control unit 11 having a microcomputer as a main control unit, and a storage unit 19 and an interface group are connected to the master station control unit 11. The interface group includes an output interface 12, an input interface 14, a display interface 16, and a wireless interface 21.

  The output interface 12 converts the caller's voice signal sent from the slave station in response to the answerback call into an analog signal and outputs it from the speaker 13. A microphone 15 and an input unit 17 are connected to the input interface 14. The input interface 14 converts the notification voice of the system operator input by the microphone 15 and the operation information input by the input unit 17 into a digital signal and outputs the digital signal to the master station control unit 11. The display interface 16 displays the display data output from the master station control unit 11 on the display unit 18. For example, a liquid crystal display is used for the display unit 18. The wireless interface 21 exchanges transmission / reception signals with the wireless device 2 under the control of the master station control unit 11.

  The radio apparatus 2 generates a downlink radio signal modulated by the transmission signal output from the console 1, and converts the generated downlink radio signal into a radio frequency assigned to the system and transmits the downlink radio signal. Further, it receives and demodulates the uplink radio signal sent from the slave station, and transfers the reception signal reproduced by this demodulation to the console 1. When transmitting the downlink radio signal directly to the slave station, a broadcast wave is used. When transmitting the downlink radio signal via the relay station RS, a relay wave having a frequency different from that of the broadcast wave is used.

  The storage unit 19 is provided with a slave station management table 19a and a map database 19b. The slave station management table 19a stores a busy flag indicating whether or not a call is in progress and position data indicating the location of the slave station in association with the slave station ID of each slave station belonging to the system. Yes. An example is shown in FIG. The position data is represented by latitude and longitude, for example. The map database 19b stores map data of a system management area, for example, a municipality.

  The master station control unit 11 is newly provided with an answer back reception control function 11a and a display control function 11b as control functions according to the present invention. All of these control functions are realized by causing a CPU (Central Processing Unit) to execute an application program stored in a program memory (not shown).

  The answer back reception control function 11a executes a process for establishing a call link with the caller slave station when a voice call signal requesting an answer back call is received from the outdoor slave stations FS1 to FSn. To do. At the same time, a slave station monitoring response signal arriving from the outdoor type slave stations FS1 to FSn following the voice call signal is received, and a slave station ID is extracted from the received slave station monitoring response signal.

  The display control function 11b reads out the position data of the corresponding slave station from the slave station management table 19a based on the extracted slave station ID, and also displays the region including the position represented by the position data from the map database 19b. Read map data. Then, based on the read map data and position data, the display data for displaying the location of the outdoor type slave station of the calling source on the map is created, and the created display data is displayed on the display interface. 16 and displayed on the display unit 18. At the same time, a slave station information display window W is provided on the display screen, and information indicating the status of the caller slave station is displayed on this window.

Next, the operation of the system configured as described above will be described. FIG. 5 is a flowchart showing the control procedure and control contents of the outdoor type slave stations FS1 to FSn, and FIG. 6 is a flowchart showing the control procedure and control contents of the console 1 in the master station BS.
The outdoor type slave stations FS1 to FSn operate the call button for answer back call (microphone in step 5b) while monitoring the occurrence of a call from the master station BS in step 5a in the slave station control unit 33. Press). When a call signal arrives from the master station BS in this state, a collation process of a slave station ID included in the call signal and a loudspeak output process of the notification signal are executed.

  On the other hand, it is assumed that the caller operates the call button in the outdoor type slave stations FS1 to FSn in order to make a call with the system operator of the master station BS. Then, the slave station control unit 33 of the outdoor type slave stations FS1 to FSn proceeds from step 5b to step 5c, and first transmits a voice call signal. Further, the slave station control unit 33 proceeds to step 5d, where it reads out the slave station ID of the local station from the ID storage unit 38, and generates a slave station monitoring response signal in which the slave station ID is inserted. Then, the generated slave station monitoring response signal is transmitted to the master station BS as shown in FIG. After the transmission of the voice call signal and the slave station monitoring response signal, if the master station BS responds and a call link is established, the slave station control unit 33 shifts from step 5e to step 5f to enter the call mode. Thus, thereafter, the caller can make a voice call with the system operator of the master station BS.

  On the other hand, the master station BS monitors the occurrence of an answer back in step 6b while monitoring the slave station call operation by the system operator in step 6a in the master station control unit 11. In this state, when the system operator performs a slave station call operation at the input unit 17, the master station control unit 11 transmits a call signal to the slave station designated as the call destination, and then reports the contents of the report by voice. A signal is generated and transmitted to the slave station.

  Now, assume that a voice call signal for answer back arrives from the outdoor type slave station FSi after the transmission of the notification signal. Then, the master station control unit 11 notifies the system operator of the occurrence of the call. Then, when the system operator responds to the call notification, a process for establishing a call link with the caller outdoor type slave station FSi is performed. Thus, thereafter, the system operator can make a call with the caller. At this time, the call flag corresponding to the corresponding slave station in the slave station management table 19a is set to "1" indicating that a call is in progress.

  When the voice call signal is received, the master station control unit 11 proceeds to step 6c and receives a slave station monitoring response signal. Then, the caller's slave station ID is extracted from the received slave station monitoring response signal (step 6d), and the position data of the corresponding slave station is obtained from the slave station management table 19a based on the extracted slave station ID. Read (step 6e).

  Subsequently, the master station control unit 11 proceeds to step 6f, where the map data of the area including the latitude and longitude represented by the position data is read from the map database 19b. Then, based on the read map data and the position data, display data in which a mark indicating the installation position of the caller outdoor type slave station FSi is displayed on the map is created, and the created display is displayed. Data is output to the display interface 16 in step 6g.

Thus, the display unit 18 displays a map showing the installation location of the caller outdoor type slave station FSi. FIG. 8 shows an example of the display result, and P in the figure is a mark indicating the installation position of the outdoor type slave station FSi. At this time, the mark is controlled to blink at a constant cycle. Therefore, the system operator can clearly see the installation position of the caller outdoor type slave station FSi by viewing the display image on the display unit 18.
Further, the master station control unit 11 provides a slave station information display window W at one corner of the display screen as shown in FIG. 8, and information indicating the state of the caller outdoor type slave station FSi is displayed in the slave station information display window W. indicate.

  As described above, in this embodiment, when the call button for answer back call is operated in the outdoor type slave stations FS1 to FSn, a slave station monitoring response signal including the slave station ID is generated and The signal is transmitted to the master station BS. On the other hand, the console 1 of the master station BS receives the slave station monitoring response signals sent from the outdoor slave stations FS1 to FSn when the answerback call is generated, and extracts the slave station ID from the received signal. Then, based on the slave station ID, the position data of the corresponding slave station is read from the slave station management table 19a, and the map data including the installation position of the corresponding slave station is read from the map database 19b. Based on the map data and the position data, display data is created by displaying on the map the installation location of the caller's outdoor type slave station, and the created display data is displayed on the display unit 18. .

  Therefore, according to this embodiment, the system operator of the master station BS can check the display data on the display unit 18 before making a call with the callers of the outdoor slave stations FS1 to FSn. The position of the type slave station FSi, that is, the current position of the caller can be grasped, and appropriate measures can be quickly and accurately executed based on the grasped position and the contents of the caller's notification. . At this time, since the mark indicating the position of the caller outdoor type slave station FSi is displayed blinking, the position of the caller type outdoor type slave station FSi can be visually recognized more clearly.

  Further, in this embodiment, a slave station information display window W is provided at one corner of the display screen, and information indicating the state of the caller outdoor type slave station FSi is displayed on the slave station information display window W. The system operator of the master station can check not only the current location of the calling slave station but also the status of the slave station.

  The present invention is not limited to the above embodiment. For example, in the embodiment, information indicating the status of the outdoor type slave stations FS1 to FSn during an answerback call is displayed on the slave station information display window W. However, the present invention is not limited to this, and the slave station management table 19a stores attribute information for each slave station, for example, the past call history, the address of the place where the slave station is installed, the terrain, the past disaster occurrence history in the surrounding area, and the like. Alternatively, this attribute information may be read from the slave station management table 19a and displayed on the display unit 18. In this way, the system operator of the master station BS can grasp not only the current location of the caller-type outdoor slave stations FS1 to FSn, but also the attribute information of the slave stations at the same time. It becomes possible to grasp more accurately.

  In the above embodiment, the mark indicating the position of the caller outdoor type slave station FSi is blinked. However, the display color of the mark may be changed at a constant period, and a plurality of different shapes may be used. These marks may be alternately switched and displayed at regular intervals. In addition to the mark, an icon, a symbol, or the like may be used as the current position display pattern.

  Further, in the master station, information indicating the urgency level of the call may be displayed together with the installation position of the caller slave station. For example, means for designating the degree of urgency is provided for the outdoor type slave stations FS1 to FSn. When the caller operates the call button and designates the urgency level by the above means, the data indicating the designated urgency level is inserted into the slave station management response signal together with the slave station ID to the master station BS. Send. On the other hand, the master station BS displays a mark indicating the urgency level on the display screen based on the information indicating the urgency level extracted from the slave station monitoring response signal. In this way, the system operator of the master station can grasp the urgent level of the answerback call together with the installation position of the caller slave station before or during the call.

In addition, the configuration of the slave station and the master station, the procedure and contents of the answerback transmission / reception control, the display form of the slave station installation position, the slave station ID notification means from the slave station to the master station, etc. Various modifications can be made without departing from the scope.
In short, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The schematic block diagram which shows one Embodiment of the disaster prevention radio | wireless system concerning this invention. The block diagram which shows the function structure of the outdoor type | mold slave station of the system shown in FIG. FIG. 2 is a sequence diagram showing an answer back control procedure performed between a master station and an outdoor slave station in the system shown in FIG. The block diagram which shows the function structure of the main | base station of the system shown in FIG. The flowchart which shows the answer back transmission control procedure and control content in the outdoor type | mold slave station shown in FIG. 5 is a flowchart showing a procedure and control contents of answer back reception control and display control in the master station shown in FIG. 4. The figure which shows an example of the memory content of the sub_station | mobile_unit management table provided in the main | base station shown in FIG. The figure which shows an example of the data displayed on the display part of the main | base station shown in FIG.

Explanation of symbols

  BS ... master station, RS ... relay station, FS1 to FSn ... outdoor type communication device (outdoor type slave station), GS1 to GSm ... indoor type communication device (door-to-door receiver), 1 ... console, 2 ... wireless device 3, 4 ... Relay wireless device, 11 ... Master station control unit, 11a ... Answer back reception control function, 11b ... Display control function, 12 ... Output interface, 13 ... Speaker, 14 ... Input interface, 15 ... Microphone, 16 ... Display interface, 17 ... Input unit, 18 ... Display unit, 19 ... Storage unit, 19a ... Slave station management table, 19b ... Map database, 21 ... Wireless interface, 22 ... Master station antenna, 31 ... Outdoor slave station antenna 32 ... Radio unit, 33 ... Slave station control unit, 33a ... Answerback transmission control function, 34 ... Output interface, 35 ... Outdoor loudspeaker, 36 ... Microphone, 37 ... Power interface, 38 ... ID storage unit.

Claims (3)

A master station, and a plurality of slave stations distributed in a management area and connectable to the master station via a wireless line, and calling the master station from the slave station to the slave station and the master station Disaster prevention radio system with a function to enable voice communication between,
The slave station is
In response to a call operation for calling a parent station from a slave station, a control signal including identification information of the own station is generated, and a means for transmitting the generated control signal to the parent station is provided.
The master station is
First storage means for storing map data of the management area;
Second storage means for storing position data representing the installation positions of the slave stations in association with the identification information of the plurality of slave stations,
Means for receiving a control signal transmitted from the slave station when calling from the slave station;
Means for extracting slave station identification information from the received control signal, and reading out the corresponding slave station position data from the second storage means based on the extracted slave station identification information;
Display data in which map data is read from the first storage means, and the installation location of the caller slave station is displayed on the map based on the read map data and the read position data. Means for generating
A disaster prevention radio system comprising: means for displaying the generated display data. The master station is
2. The disaster prevention radio system according to claim 1, further comprising means for displaying related information related to a caller's slave station whose installation position is displayed on the map so as to be superimposed or arranged on the display data.   2. The disaster prevention radio system according to claim 1, wherein said display data display means displays a mark at the location of the caller's slave station on the map and dynamically changes the display of this mark. .

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