JP2003208682A - Road tunnel information providing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a road tunnel information providing device capable of rapidly providing disaster information or escape instruction to road users in the occurrence of a fire in a road turnnel. <P>SOLUTION: This device is provided with an FM receiving means 28 for receiving FM broadcast wave with road information multiplied thereon and outputting an FM receiving signal; a disaster information generating means 22 for generating disaster information in the occurrence of a disaster in the road tunnel; an FM multiple modulation means 24 for generating a disaster FM signal in which the disaster information is multiplied as road information; and a signal switching means 25 for generally outputting the FM receiving signal and outputting the disaster FM signal in the occurrence of the disaster, and an antenna 31 for transmitting an output signal from the signal switching means 25 into the road turnnel. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road tunnel information providing device, and more specifically, to a road user in a road tunnel at the time of occurrence of a disaster or after the occurrence of the disaster, via a road information terminal, to provide disaster time information. The present invention relates to a road tunnel information providing system for providing.

[0002]

2. Description of the Related Art FIG. 12 is an explanatory view showing equipment conventionally provided in a road tunnel for a disaster such as a fire. A number of sensors and TV cameras for monitoring are installed at predetermined intervals in the road tunnel along the main tunnel of the road tunnel where automobiles pass, and using these sensors and TV cameras, disasters in the road tunnel occur. Are watching. For example, about every 25m fire detector,
Every about 150m, the TV camera has an anemometer, smoke densitometer,
Thermometers and CO (carbon monoxide) meters are installed at wider intervals.

In the case of a mountain tunnel or the like, an evacuation pit is provided along the main road tunnel, and evacuation openings leading to the evacuation pit are provided at predetermined intervals, for example, 300 to 5 in the main road tunnel.
It is provided at intervals of 00m. Further, the evacuation pit is provided with evacuation pit exits which are connected to the open space outside the road tunnel at wider intervals. Normally, a road tunnel is a one-way street, so if there is a fire ahead while the road tunnel is passing, the road user (passenger of the vehicle) exits and exits the road tunnel to the nearest exit. Will be evacuated from. In other words, it is possible to evacuate outside the tunnel by walking on the side road in the main tunnel of the road tunnel, entering the evacuation pit through the evacuation pit, and walking the evacuation pit to find the evacuation pit exit.

As another road tunnel, if two road tunnel main shafts (for example, upper and lower lanes) are provided close to each other, one of them can be used as the other evacuation shaft. In this case, the access port provided between the main tunnels of the road tunnel becomes the evacuation port. Further, in the case of an underground tunnel or the like, an evacuation pit is omitted because a relatively large number of exits to the outside of the road tunnel can be provided. In this case, the exit to the outside of the road tunnel becomes the evacuation exit.

FIG. 13 is a block diagram showing an outline of a conventional road tunnel information providing system. Sensor signals from the sensors 7 and 8 in the road tunnel are sent to a road tunnel management center that manages the road tunnel. The central information management device 1 is installed in the road tunnel management center, and when a fire occurs, the signal detection unit 5 of the central information management device 1 detects these sensor information and displays it on the display unit 2. This display allows the operator to know the fact of the fire and the location of the fire.

Further, the operator can control the shooting direction of the TV camera 9 in the road tunnel from the management center, and display the image of the fire occurrence place in the road tunnel on the display unit 2 of the central information management device 1. You can Therefore, the operator can confirm the fact of the disaster occurrence, grasp the disaster occurrence situation and the disaster occurrence point, and further know the subsequent progress situation and the spread range in detail.

When a fire occurs in a road tunnel, it is necessary to provide road users in the road tunnel with disaster information and evacuation information based on such information, and information displayed in the road tunnel is displayed. The location of the fire, the evacuation method, etc. can be identified by electronically displaying information on a board (not shown), re-broadcasting the radio on the AM radio channel via the antenna 70, and loud broadcasting by the loudspeaker 71 installed in the road tunnel. It provided the information as a brief message.

However, since the road tunnel is usually a closed space in which the sound absorbing effect is less likely to occur on the inner wall surface, there is a problem that the loudspeaker broadcast by the loudspeaker 71 is echoed in the road tunnel and is difficult to hear. Further, there is a problem that the display of the information display plate may be invisible due to smoke generated by the fire.

[0009] Here, if the road user has a navigation terminal, the current position of the road user can be known, and most recent navigation terminals have a VI.
It is also possible to obtain road information by CS (Vehicle Information Communication System). Therefore, if the current position and the disaster occurrence point can be displayed on the navigation terminal, the road user can easily understand the situation at the time of the disaster and can take an appropriate evacuation action.

However, since the VICS terminal normally obtains the road information multiplexed in the character portion of the FM text multiplex broadcast, the VICS can be used in the road tunnel where the FM broadcast cannot be received. Therefore, disaster information cannot be obtained. In addition, even if it is possible to obtain the general information of the disaster occurrence point by using loudspeaker broadcasting in the road tunnel and know the current position of the road user with the navigation terminal, the relative position of the two in the road tunnel. There was a problem that it was not easy to accurately grasp the relationship in such an emergency.

Further, even if the relative position relationship between the disaster occurrence point and the current position can be grasped, it is not easy for the road user to make a judgment based on the information and take an appropriate evacuation action. . In particular, disaster situations and the extent of their impact are changing from moment to moment, but road users make such judgments based on simple messages such as loud broadcasts, and take appropriate actions depending on the situation. I can't expect that. For example, it can be considered that it is not easy for a road user to judge by himself whether to stop the vehicle, get out of the vehicle and evacuate from the evacuation exit, or which evacuation exit should be taken.

[0012]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides disaster prevention information and evacuation instructions to road users when or after a disaster such as a fire occurs in a road tunnel. It is an object of the present invention to provide a road tunnel information providing device that promptly provides the information. Further, another object of the present invention is to provide a road tunnel information providing device for giving an appropriate evacuation instruction to a road user according to a position in the road tunnel.

[0013]

A road tunnel information providing device according to the present invention according to claim 1 receives an FM broadcast wave in which road information is multiplexed and outputs an FM reception signal.
M receiving means, disaster information generating means for generating disaster time information for users of the road tunnel when a disaster occurs in the road tunnel, and a predetermined F as road information using this disaster time information.
FM multiplex modulation means for generating an FM signal at the time of disaster by multiplexing with M modulation signal, and signal switching means for outputting the FM reception signal at the time of normal and outputting the FM signal at the time of disaster,
And an antenna for transmitting an output signal from the signal switching means into the road tunnel.

The receiving means receives the FM broadcast wave in which the road information is multiplexed in the FM broadcasting station outside the road tunnel and outputs the FM reception signal. During normal times when no disaster has occurred, this FM reception signal is rebroadcast from the antenna installed in the road tunnel, and road users passing through the road tunnel can obtain road information from the road information terminal. it can.

On the other hand, when a disaster occurs in a road tunnel, the disaster information generation means generates disaster time information for the road user, and the FM multiplex modulation means converts this disaster time information into road information into a predetermined FM modulated signal. FM in case of disaster by multiplexing
Generate a signal. It should be noted that this FM-modulated signal contains the above-mentioned FM.
The same frequency channel as the broadcast wave is used, and disaster information is also F
It is desirable to be multiplexed in the same format as the road information in the M broadcasting station.

When a disaster occurs in the road tunnel, the signal switching means switches the output signal to the antenna from the FM reception signal to the FM signal at the time of disaster, and the FM signal at the time of disaster is sent to the inside of the road tunnel. Road users who are passing through can obtain disaster information from the same road information terminal.

In the road tunnel information providing apparatus according to the present invention as defined in claim 2, the FM modulated signal includes voice information for notifying a user of the road tunnel of a disaster. With such a configuration, the road user can obtain the disaster time information not only by the road information terminal but also by the audio output of the FM radio.

In the road tunnel information providing apparatus according to the third aspect of the present invention, the disaster information generating means determines the disaster occurrence point based on the identification information assigned to each road tunnel section that preliminarily divides the road tunnel into two or more sections. It is configured to generate the identified disaster information.

The identification information is a code assigned to each road tunnel section in which the road tunnel is divided into two or more in advance, and a disaster FM signal obtained by multiplexing disaster information in which the disaster occurrence point is specified by the identification information is multiplexed. By sending the information to the inside of the tunnel, the road user who is passing through the road tunnel can know the disaster occurrence point from the road information terminal that can recognize the identification information. In particular, by displaying the disaster occurrence point on the map together with the current position of the user by the road information terminal, the disaster occurrence point can be easily grasped.

In the road tunnel information providing device according to a fourth aspect of the present invention, the antenna is installed so as to cover each evacuation section for each evacuation section in which the road tunnel is divided into two or more in advance, and the disaster occurs. The information generating means is configured to generate evacuation information for each evacuation section.

In the road tunnel, a plurality of antennas are installed along the road tunnel, and each evacuation section of the road tunnel is associated with one or more antennas covering the section. The disaster information generating means generates evacuation information for each evacuation section, and the disaster FM signal in which the evacuation information is multiplexed is sent from the antenna corresponding to the evacuation section into the tunnel.

In the road tunnel information providing apparatus according to a fifth aspect of the present invention, the disaster information generating means uses the identification name assigned to each road tunnel section that preliminarily divides the road tunnel into two or more, and the disaster information is generated after the disaster occurs. It is configured to generate disaster information specifying a spread range.

The disaster information generating means sends the FM signal at the time of disaster, which is multiplexed not only at the time of occurrence of the disaster, but also at the time of disaster, which specifies the spread range after the disaster occurs, to the road user. , You can know the situation after the disaster.

[0024]

1 is a diagram showing an outline of a configuration example of a road tunnel information providing system according to a first embodiment of the present invention. In the figure, 1 is a central information management device, 7 is a fire detector, 8 is various measuring instruments, 9 is a television camera, 30 is a terminal device, 31 is an antenna, and 40 is a navigation terminal. Further, the central information management device 1 includes a display unit 2, an input unit 3, a camera control unit 4, a signal detection unit 5, and an information providing unit 6.

The central information management device 1 is installed in the road tunnel management center of the road manager, and monitors the situation inside the road tunnel from outside the road tunnel.
Information is provided to road users in a road tunnel by using an FM modulated signal. With this FM modulated signal,
In addition to providing road information such as traffic jam information during normal times,
When a disaster occurs, it provides disaster information and evacuation information.

The fire detector 7 is a sensor that can immediately detect the occurrence of a fire inside a road tunnel, and normally can output a detection signal within 1 minute after the occurrence of a fire. The measuring instrument 8 is an anemometer, smoke densitometer, thermometer, CO meter (carbon monoxide densitometer), etc. installed inside the road tunnel, and mainly measures the spread range of fire, smoke, etc. after a fire occurs. It is provided to detect.

Detection signals of the fire detector 7 and various measuring instruments 8
The measurement signal of is transmitted to the central information management device 1 and input to the signal detection unit 5. The signal detection unit 5 detects these input signals and outputs them to the display unit 2, and the fire occurrence point and various measurement data are displayed on the display unit 2. The display unit 2 is a display device for displaying disaster information to the operator, and the operator confirms the disaster situation in the road tunnel by the TV camera 9 based on this disaster information. That is,
The operator instructs the photographing direction of the television camera 9 from the input unit 3, the camera control unit 4 controls the driving of the television camera 9, and displays the photographed image on the display unit 2. The operator who confirms the occurrence of a disaster such as a fire in this way inputs disaster information and an evacuation instruction from the input unit 3, and the information providing unit 6 provides the disaster information and the evacuation instruction to the road users in the road tunnel. .

The information providing unit 6 is an FM in which road information, disaster information or evacuation instructions are multiplexed in accordance with an operator's instruction.
The modulated signal is output, and this FM multiplex modulated signal is sent out from the antenna 31 into the road tunnel via the terminating device 30.

The navigation terminal 40 not only has a function of detecting its own current position and displaying map information including the current position on the screen, but also acquires road information from FM broadcast waves, optical beacons, and radio wave beacons as a VICS terminal. It also has a function as a road information terminal for displaying. This navigation terminal 40 receives the FM multiplex modulated signal transmitted from the antenna 31 in the road tunnel and uses the VI as the received signal.
The road information or disaster information multiplexed as CS information is extracted and displayed on the screen, or output as voice.

FIG. 2 is a block diagram showing an example of the configuration of the information providing unit 6 of the central information management device 1 of FIG. In the figure, 20 is a signal switching control unit, 21 is a notification message generation unit,
22 is a report data generation unit, 23 is an FM modulator, 24 is F
An M multiplex modulator, 25 is a signal switching unit, 26 is an FM signal generator, 27 is an antenna, and 28 is an FM receiver.

The antenna 27 is an antenna for receiving an FM broadcast wave transmitted from a general FM broadcast station,
The FM reception signal received and processed by the FM receiver 28 is input to the signal switching unit 25. This FM reception signal is a composite signal in which road information of VICS levels 1 to 3 is multiplexed on a stereo broadcast signal in a general FM broadcast station.

In the normal time when no disaster occurs, this FM reception signal is sent to the FM signal generation section 26 via the signal switching section 25.
To the RF standard signal to generate an RF signal. This RF signal is transmitted by wire to the terminal device 30 of the road tunnel and is rebroadcast from the antenna 31 in the road tunnel. Therefore, the navigation terminal 40
The road information can be displayed by receiving this rebroadcast wave and extracting the VICS road information multiplexed in the received signal. That is, normally, the road user can obtain the road information from the navigation terminal 40 even in the road tunnel where the FM broadcast wave does not reach.

The notification message generating section 21 is means for generating a voice message for notifying the disaster situation, evacuation instruction, etc. when a disaster occurs according to the operator's instruction from the input section 3, and is a voice input means, a voice synthesizing means. Alternatively, it is composed of a recorded sound reproducing means. FM modulator 23
Generates a FM signal at the time of disaster by FM-modulating this voice message.

The notification data generation unit 22 generates disaster data when a disaster occurs according to an operator's instruction from the input unit 3. This disaster data is data for notifying the road information terminal 40 of the fact that the disaster has occurred, the location of the disaster, the extent of its spread, etc., and is composed of data such as characters and figures. The FM multiplex modulator 24 multiplexes the disaster time data with the FM modulated signal generated by the FM modulator 23 to generate a disaster FM signal as a composite signal.

The VICS information has information providing formats of levels 1 to 3. At level 1, road information is provided as text information, at level 2, road information is provided as graphic information, and at level 3, road information associated with link information is provided. The link information (link name) is an identification name assigned in advance to each section obtained by finely dividing the road. Since the VICS terminal also has the same link information in advance, the VICS terminal can know the position of the road information on the map by adding the link name to the road information and transmitting it.

Here, in the notification data generation unit 22, the character information "fire occurrence" is generated as VICS level 1 information, and the link information of the fire occurrence point is generated as VICS level 3 information, and FM multiplexing is performed. In the modulator 24, it is assumed that these pieces of information are multiplexed with the FM modulated signal.

The signal switching control unit 20 controls the switching of the signal switching unit 25 in accordance with the operator's instruction from the input unit 3. Further, the signal switching unit 25 outputs to the FM signal generator 26 one of the two composite signals, that is, one of the disaster FM signal from the FM multiplex modulator 24 and the received FM signal from the FM receiver 28. It is a switching means, which outputs an FM reception signal during normal times and outputs a FM signal during a disaster when a disaster occurs.

The modulation method in the FM modulator 23,
The multiplex modulation method in the FM multiplex modulator 24 is the same as the modulation method in a general broadcasting station, and a composite signal of the same signal format is input to the signal switching unit 25.
Therefore, the FM signal at the time of a disaster transmitted from the antenna 31 into the road tunnel can be used by a normal FM radio or a VICS terminal.

Although not shown in FIG. 2, the central information management device 1 does exactly the same as in the case of the FM modulated signal.
It is also possible to AM-modulate the voice message generated by the notification message generator 21 when a disaster occurs to generate an AM-modulated signal and send it out into the road tunnel. That is, the AM receiver for receiving the AM broadcast wave outside the road tunnel, and the voice message generated by the notification message generating unit 21 are AM.
An AM modulator that modulates to generate a disaster AM signal, a signal switching unit that switches and outputs a reception AM signal and a disaster AM signal, and an antenna 70 for an AM modulation signal provided in a road tunnel During normal times, the received AM signal is sent out into the tunnel, and when a disaster occurs, the AM signal at the time of disaster is sent out. In this way, it is more desirable to provide disaster information in both FM and AM modulated signals.

FIG. 3 is a block diagram showing a configuration example of the terminating device 30 of FIG. The terminating device 30 is composed of an amplifier 32 and a coupler 33, and comprises a central information management device 1
The RF signal (FM multiplex modulation signal) input from is amplified and output to the antenna 31 via the coupler 33. In this way, the FM modulated signal is transmitted from the antenna 31 into the road tunnel. Generally, a plurality of the antennas 31 are installed in a road tunnel and can receive FM modulated signals in all sections of the road tunnel. As the antenna 31, various antennas can be applied, but it is preferable to use a linear antenna such as a leaky coaxial cable rather than a dipole antenna.

FIG. 4 is a sequence diagram showing an operation example of the road tunnel information providing system when a fire occurs. This figure shows the operation of a sensor in a road tunnel, a road tunnel management center (central information management device 1), and a road user (navigation terminal 40) when a fire occurs.

When the fire detector 7 detects the fire occurrence in the road tunnel, the operator of the central information management device 1 uses the television camera 9 to confirm the fact of the fire occurrence and the place where the fire occurred. Is specified (S101-
S103). When a fire is confirmed, a disaster is reported. That is, the type of disaster, the location of the disaster, and the like are designated from the input unit 3 of the central information management device 1 to instruct the road users to provide information (S104).

By the operator's notification, the voice message generated by the notification message generation unit 21 is FM-modulated, and the signal switching unit 25 is switched from the FM reception signal side to the disaster FM signal side (S105). In addition,
When the central information management device 1 can generate a disaster AM signal, the voice message generated by the notification message generator 21 is also AM-modulated and switched to a disaster AM signal.

Next, the voice message generated by the notification message generation unit 21 is FM-modulated, and the VICS level 1 character information "fire occurrence" and "listen to the radio" generated by the notification data generation unit 21 are multiplexed. The generated FM multiplex modulated signal is generated and transmitted in the road tunnel (S10).
6).

The navigation terminal 40 receiving this FM multiplex modulation signal extracts the character information of "fire occurrence" from the received signal, displays it on the screen as character or graphic information, or outputs it by voice (S108, S109). . Also,
FM if you are listening to FM or AM radio
A voice message is output from the radio or AM radio.

Further, the navigation terminal 40 extracts the character information "Listen to the radio" which prompts the user to listen to the radio from the received signal and displays it on the screen as character or graphic information.
Alternatively, the sound is output (S110). As a result, the road user can be prompted to turn on the FM radio or AM radio and listen to the disaster information on the radio.

Further, the VICS level 3 link information generated by the notification data generator 22 is multiplexed with the FM modulated signal and transmitted in the road tunnel (S107).
The navigation terminal 4 which has received this FM multiplex modulated signal
0 extracts link information from the received signal and displays the fire occurrence point based on this link information together with the current position on the map (S111, S112).

According to the present embodiment, in a normal time, the FM broadcast wave is received and re-broadcast as it is in the road tunnel to provide road users with road information such as congestion, and at the time of a disaster, a disaster occurs. Information can be provided.

Further, since the disaster information is displayed on the screen or output by voice from the navigation terminal, it becomes invisible due to smoke like an information display board in a conventional road tunnel, or hard to hear like a loud broadcast in a road tunnel. There is no problem.

Further, since the disaster occurrence point can be displayed on the map by the navigation terminal, the road user can easily grasp the disaster occurrence point, and further,
By displaying together with the current position of the road user, the relative positional relationship with the disaster occurrence point can be grasped. Therefore, it can be useful for taking an appropriate evacuation action.

Embodiment 2. FIG. 5 is a block diagram showing a configuration example of the navigation terminal according to the second embodiment of the present invention, and shows the navigation terminal 40 of FIG. 1 in detail. In the figure, 41 is an antenna, 42 is a reception processing unit, 43 is an extraction processing unit, 44 is a discrimination processing unit, 45 is a locator, 46 is a storage device, 47 is a display processing unit, and 48.
Is a display unit, 49 is a voice processing unit, and 50 is a voice output unit.

The FM multiplex modulated signal received by the antenna 41 is subjected to reception processing by the reception processing unit 42, and then VICS information is extracted by the extraction processing unit 43. The extracted VICS level 1 and 2 information is output to the display processing unit 47, and is displayed on the display unit 4 such as an LCD as character or graphic information.
8 is displayed. Alternatively, it is output to the voice processing unit 49, voice-synthesized, and output from the voice output unit 50 such as a speaker.

VIC extracted by the extraction processing unit 43
The link information indicating the disaster occurrence point of S level 3 is output to the determination processing unit 44. When displaying the disaster occurrence point on the map, the determination processing unit 44 identifies the fire occurrence point by collating the extracted link information with the link information stored in the storage device 46. The display processing unit 47 includes a storage unit 46.
Image information in which the fire occurrence point is added to the map information stored in is generated, and the display unit 48 displays this.

The navigation terminal 40 not only outputs the disaster information by utilizing the function as the VICS terminal, but also itself based on the extracted VICS level 3 link information and the output information of the locator 45. Evacuation information is generated and evacuation instructions are given to road users.

The locator 45 is a GPS (Global Posit
(ioning system), traveling distance, moment of inertia, etc. to detect the current position and traveling direction. The determination processing unit 44 generates evacuation information based on the fire occurrence point obtained from the link information and the current position and traveling direction obtained from the locator 45. That is, when a fire occurs in the road tunnel, the vehicle is instructed to stop before the fire occurrence point, and is instructed to continue as it is after passing through the fire occurrence point. Further, if the location information of the evacuation exit of the road tunnel is stored in the storage device 46, the nearest evacuation exit that can be safely evacuated is determined, and the evacuation exit and the evacuation route to the evacuation exit are identified by the road user. Let us know.

FIG. 6 is a diagram showing an example of display by the display unit 48. In the display area 60 at the top of the screen, the text information of VICS level 1 "Fire in tunnel" is displayed, and in the display area 61 on the left side of the screen, VICS level 3 is displayed.
Based on the link information, the fire occurrence point 62 and the current position 63 are displayed on the map of the road tunnel including the evacuation gate. In addition, in the display areas 64 and 65 on the right side of the screen,
On the front side of the fire spot, there is a stop, and on the other side of the fire spot, a display indicating that the vehicle can pass at a speed limit of 40 km and an evacuation route instruction for evacuating from the evacuation exit on the left front are displayed.

According to the present embodiment, when a disaster occurs in a road tunnel, a road user passing through the road tunnel receives the FM multiplex modulated signal and multiplexes it with the received signal. The disaster information can be displayed on the screen of the navigation terminal or output by voice. Moreover, the disaster occurrence point can be displayed by extracting the link information multiplexed in the received signal. Furthermore, the navigation terminal generates evacuation information based on the current position and the disaster occurrence point, and gives an appropriate evacuation instruction to the road user. That is, an individual evacuation instruction is given according to the current position of the road user.

Third Embodiment In the first and second embodiments, the example of the road tunnel information providing system that provides the common disaster information to the road users in the road tunnel has been described. However, in the present embodiment, the road users in the road tunnel are provided. A road tunnel information providing system that provides different disaster information depending on the position of the, especially evacuation information will be described.

7 and 8 show the third embodiment of the present invention.
It is a figure showing an example of 1 composition of an important section of a road tunnel information service system by. FIG. 7 shows an installation example of the antenna 31 in the road tunnel, and FIG. 8 shows the central information management device 1
Another configuration example of the information providing unit 6 is shown.

The road tunnel is divided into a plurality of (at least two) evacuation sections. It is desirable that each evacuation section should include at least one evacuation opening. In FIG. 7, one evacuation opening is included in each evacuation section, and each evacuation opening is provided on the upstream side (front side in the vehicle traveling direction) of the center of the evacuation section. Road users who need to evacuate by foot are located upstream of the fire site. Therefore, if an evacuation exit is specified for each evacuation section and an evacuation instruction is given, a road user located upstream of the evacuation exit within the evacuation section will evacuate toward the fire occurrence point. Therefore, by providing an evacuation opening upstream of the center of the evacuation section, such road users can be reduced and the evacuation distance can be shortened.

That is, it is desirable that the evacuation port is provided at or near the upstream end of the evacuation section. It is desirable to evacuate to the point of fire occurrence within one minute, and the evacuation speed on foot is approximately 1.5 to 1.7 m / sec. Therefore, the evacuation gate is 100 m from the upstream end of the evacuation section. Must be installed within. In addition, an evacuation gate should be installed within 50 m from the upstream end of the evacuation section to increase the evacuation time to 3
It is more desirable to set it within 0 seconds.

At least one antenna 31 is installed for each evacuation section, and is installed so that the same FM multiplex modulated signal can be properly received within the evacuation section. That is, the antenna area covered by the one or more antennas 31 installed in one evacuation section generally matches the evacuation section. Further, an antenna is not arranged near the boundary of the evacuation section so that the antenna areas do not overlap at the boundary of the evacuation section. However, even if the antenna areas slightly overlap, the FM receiver generally has a property of directing stronger radio waves. There is no problem because it exists.

The information providing unit shown in FIG.
In order to generate a signal for each evacuation section, a notification message generation unit 21, a notification data generation unit 22, an FM modulator 23,
Processing blocks B1 to Bn each including an FM multiplex modulator 24, a signal switch 25, and an FM signal generator 26 are provided for each evacuation zone.

When a disaster occurs, the operator issues an evacuation instruction for each evacuation section from the input unit 3. For example, the evacuation exit to be evacuated is designated for each evacuation section. Report data generator 2
2 generates the notification data for each evacuation section consisting of the evacuation gate number and position according to the operator's instruction, and FM
The FM signal at the time of a disaster for each evacuation section is generated by the multiplex modulator 24, and is transmitted from the antenna 31 to the corresponding evacuation section. Further, the notification message generating unit 21 may also generate a notification message for each evacuation section and generate an FM modulation signal for each evacuation section by the FM modulator 23 according to the instruction of the operator.

Evacuation information for each evacuation section is usually VIC.
The information of S level 1 may be used. Therefore, in such a case, the VICS level 2 of the report data generation unit 22
The functional part that generates the information of No. 3 is the blocks B1 to Bn.
It can be shared between the two. Further, the notification message generation unit 21 and the FM modulator 23 also include blocks B1 to B
You may make it common among n. Further, since the notification message generation unit 21 and the notification data generation unit 22 are usually realized by software processing, they can be realized by one hardware (computer) including the VICS level 1 processing of the notification data generation unit 22. .

FIG. 9 is a sequence diagram showing an operation example of providing evacuation information when a fire occurs. The operator of the road tunnel management center creates an evacuation instruction for each evacuation section and inputs it from the input unit 3 of the central information management device 1 (S201). The notification data generation unit 22 generates an evacuation instruction for each evacuation section as VICS level 1 character information, and a disaster FM signal for each evacuation section is generated and transmitted to the corresponding evacuation section (S20).
2).

The navigation terminal 40 can receive the FM signal at the time of a disaster in the evacuation zone in which it is located (S203). Then, the evacuation instruction of VICS level 1 multiplexed with this received signal is extracted and displayed in characters on the display screen. Alternatively, the voice output function outputs a voice message associated with the character information in advance or a voice message synthesized from the character information from the speaker.

According to the present embodiment, when a disaster occurs in a road tunnel, different evacuation instructions can be issued for each evacuation section, and road users who are passing through the road tunnel will be able to You can receive appropriate evacuation instructions and concrete evacuation instructions according to your location.

Fourth Embodiment FIG. 10 shows the fourth embodiment.
FIG. 6 is a sequence diagram showing an operation example of providing evacuation information when a fire occurs due to. When a fire occurs in a road tunnel, a large amount of smoke or toxic gas is usually generated, and the air moves in the road tunnel and expands while being affected by wind in the road tunnel. In addition, the range of fire expands or moves from the time the fire occurs until the time it is extinguished.

Inside the road tunnel, a thermometer, smoke densitometer, C
Various measuring instruments 8 such as an O meter are installed, and temperature, smoke concentration, CO concentration, etc. are measured by these measuring instruments 8 and the measurement results are transmitted to the central information management device 1 (S301 to S301).
S303). The operator determines the spread of the fire and the spread of the smoke after the fire has occurred, based on the measurement data aggregated and displayed in the central information management device 1 (S30).
4). Then, based on this judgment result, the fire spread range and the smoke spread range are reported. That is, the notification data generation unit 22 converts the spread range of fire and the spread range of smoke into one or more pieces of link information based on an instruction from the operator, and VICS level 3 information including these pieces of link information is generated. The FM modulated signal in which this information is multiplexed is sent out into the road tunnel (S305).

When the navigation terminal 40 receives this FM-modulated signal (S306), the extraction processing section 43 extracts the multiplexed VICS level 3 link information,
The discrimination processing unit 44 collates with the link information of the storage device 46 to identify the spread range of a fire or the like. The display processing unit 47 generates image data in which the spread range of a fire or the like is displayed on the map of the road tunnel based on the spread information, and displays the image data on the display unit 48 (S307).

After the fire occurs, the operator monitors the spread situation of the fire or the like based on the measurement data and the like, and sends new information at regular time intervals or when the situation changes. Therefore, the road user can be provided with real-time information regarding the extent of the spread of the fire or the like, which changes from moment to moment.

In the same manner, the evacuation instruction from the operator in the third embodiment can be sent as new information at regular intervals or when there is a change in the situation, based on the spread range of a fire or the like. Good. For example, a road user who has a fire behind a road tunnel is instructed to pass the road as it is. For road users in front of a road tunnel where a fire has occurred, depending on the distance from the current position to the point where the fire occurred, if the distance is longer than a predetermined distance, only stop is instructed. If it is too short, instruct them to stop and evacuate. When instructing the evacuation, it is also possible to instruct the nearest evacuation gate that can be safely evacuated and the evacuation route to the evacuation gate.

FIG. 11 is a timing chart showing an example of the operation of the navigation terminal 40. In each of (a) to (e) in the figure, the horizontal axis is the time elapsed since the fire started. (A) shows from the occurrence of the fire to the end of the fire. (B) has shown the operation | movement of the information provision of "fire occurrence." Immediately after the occurrence of the fire, the text information “fire occurrence” of VICS level 1 is transmitted to all sections of the road tunnel and displayed on the navigation terminal 40 until the end of the fire. (C) has shown the operation | movement of the information provision of a fire spread range. After the fire has occurred, VICS level 3 fire spread information is transmitted to all sections of the road tunnel, and the fire spread information that is updated at any time is displayed on the map by the navigation terminal 40 until the end of the fire.

(D) and (e) show the operation of providing evacuation instruction information according to VICS level 1 provided for each evacuation section. (D) is an evacuation instruction in an evacuation section upstream of the fire occurrence point (that is, an evacuation section in which a fire has occurred in front of the section). Since it is far from the fire occurrence point, the operator of the management center judges that there is no need to evacuate at the beginning of the fire and only the stop instruction is sent to the evacuation section. However, due to the subsequent spread of fire and smoke, the central information management device 1
Operator judges that the road user in the evacuation section also needs to evacuate, and the evacuation instruction is issued. On the other hand, (e) is an evacuation instruction in an evacuation section downstream of the fire occurrence point (that is, an evacuation section in which a fire has occurred after the section), and is instructed to pass while riding. .

According to the present embodiment, it is possible to provide disaster information and an evacuation instruction not only about the point of occurrence of a fire, but also the extent of the subsequent spread of fire or smoke. Therefore, the road user can take an appropriate evacuation action according to the extent of the spread of fire or the like.

In the present embodiment, an example has been described in which the operator of the management center gives an evacuation instruction for each evacuation section based on the spread information, but in the same way as in the case of the second embodiment, Navigation terminal 40
The evacuation instruction may be given based on the spread information. That is, on the basis of the spread range of a fire or the like obtained from the link information, the current position and the traveling direction obtained from the locator 45, the discrimination processing unit 44 of the navigation terminal 40
If an evacuation instruction (whether to stop or evacuate, evacuation exit, direction, or route to evacuate) is discriminated and displayed on the display unit 48, the road user can see (d) and (e) in FIG. The same evacuation instructions can be given.

In each of the above embodiments, an example in which a road user uses a VICS terminal has been described, but the VICS terminal is an example of a road information terminal, and the present invention is not limited to the VICS terminal. Not done. Also, this road information terminal is usually an in-vehicle terminal fixed to the vehicle,
It may be a portable terminal that can be carried.

[0079]

According to the present invention, it is possible to provide a road tunnel information providing device for promptly providing disaster information and evacuation instructions to road users when a disaster such as a fire occurs in a road tunnel. For road users,
A road tunnel information providing device for giving an appropriate evacuation instruction according to a position in a road tunnel can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a configuration example of a road tunnel information providing system according to a first embodiment of the present invention.

2 is a block diagram showing a configuration example of an information providing unit 6 of the central information management device 1 of FIG.

FIG. 3 is a block diagram showing a configuration example of a terminal device 30 of FIG.

FIG. 4 is a sequence diagram showing an operation example of the road tunnel information providing system when a fire occurs.

FIG. 5 is a block diagram showing a configuration example of a navigation terminal according to a second embodiment of the present invention.

FIG. 6 is a diagram showing an example of a display on a display unit 48 of the navigation terminal 40.

FIG. 7 is a diagram showing an arrangement example of antennas 31 in a road tunnel.

FIG. 8 is a block diagram showing another configuration example of the information providing unit 6 of the central information management device 1.

FIG. 9 is a sequence diagram showing an operation example of providing evacuation information when a fire occurs.

FIG. 10 is a sequence diagram showing an operation example of providing evacuation information when a fire occurs according to the fourth embodiment.

FIG. 11 is a timing chart showing an example of the operation of the navigation terminal 40.

FIG. 12 is an explanatory diagram showing equipment conventionally provided in a road tunnel when a disaster such as a fire occurs.

FIG. 13 is a block diagram showing an outline of a conventional road tunnel information providing system.

[Explanation of symbols]

1 Central Information Management Device 2 Display Section 3 Input Section 4 Camera Control Section 5 Signal Detection Section 6 Information Providing Section 7 Fire Detector 8 Measuring Instrument 9 TV Camera 20 Signal Switching Control Section 21 Notification Message Generation Section 22 Notification Data Generation Section 23 FM Modulator 24 FM multiplex modulator 25 Signal switcher 26 FM signal generator 27 Antenna 28 FM receiver 30 Termination device 31 Antenna 32 Amplifier 33 Coupler 40 Navigation terminal 41 Antenna 42 Reception processing unit 43 Extraction processing unit 44 Discrimination processing unit 45 Locator 46 storage device 47 display processing unit 48 display unit 49 audio processing unit 50 audio output unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ichiro Nakahori             1-8-4 Higashikawasaki-cho, Chuo-ku, Kobe-shi Kobe-shi             Industrial Promotion Center Room 708 emerged             System Research Center (72) Inventor Naoki Yokota             6-9-14 Hiyoshi, Kohoku-ku, Yokohama-shi Stock Association             Inside the Meguro Radiometer F-term (reference) 5C087 AA02 AA03 AA10 AA24 AA25                       AA37 AA44 BB03 BB11 BB18                       BB73 DD04 DD14 DD49 EE05                       EE15 FF01 FF02 FF04 FF17                       FF19 FF20 GG02 GG11 GG12                       GG19 GG23 GG31 GG32 GG65                       GG66 GG67 GG68 GG70 GG71                       GG82 GG85                 5G405 AA08 AB05 AD08 BA08 CA22                       CA25 CA28 DA21 DA22 EA22                       FA24 FA25

Claims (5)

[Claims] 1. An FM receiving means for receiving an FM broadcast wave in which road information is multiplexed and outputting an FM received signal, and disaster information for a user of the road tunnel when a disaster occurs in the road tunnel. A disaster information generating means, an FM multiplex modulating means for multiplexing the disaster time information as a road information into a predetermined FM modulated signal to generate an FM signal at the time of disaster, an FM reception signal at a normal time, and an FM signal at the time of disaster at the time of disaster occurrence
A road tunnel information providing device comprising: a signal switching means for outputting a signal; and an antenna for sending an output signal from the signal switching means into a road tunnel. 2. The road tunnel information providing device according to claim 1, wherein the FM modulated signal includes voice information for notifying a user of the road tunnel of occurrence of a disaster. 3. The disaster information generating means generates disaster time information in which a disaster occurrence point is specified by an identification name assigned to each road tunnel section in which the road tunnel is divided into two or more in advance. Item 1. The road tunnel information providing device according to Item 1. 4. The antenna comprises a road tunnel in advance.
The road tunnel information according to claim 1, wherein the evacuation section is installed so as to cover each evacuation section, and the disaster information generating means generates evacuation information for each evacuation section. Providing device. 5. The disaster information generating means generates disaster information in which a spread range after a disaster occurs is specified by an identification name assigned to each road tunnel section in which the road tunnel is divided into two or more in advance. The road tunnel information providing device according to claim 1.