JP6901952B2 - Tunnel underground emergency warning system - Google Patents

Description

The present invention relates to an emergency warning system in a tunnel mine, and more particularly to a system capable of generating a reliable and appropriate warning in the event of an emergency in a tunnel mine.

In the conventional tunnel mine, emergency telephones and push-button emergency alarm devices are installed at regular intervals to make emergency calls in an emergency. Currently, there are cases where an underground network is constructed by installing a Wi-Fi router at the location where the emergency alarm device is installed.

For example, the Ministry of Health, Labor and Welfare Labor Standards Bureau Director's Notification (Basic No. 523) states, "In the tunnel, a telephone, emergency bell, manual siren, and other reporting equipment shall be installed. , The type of alarm sound shall be determined in advance. In addition, an emergency power supply shall be provided in the reporting equipment that requires a power supply in order to maintain its function in the event of a power failure. " .. In order to respond to this notification, various devices for generating an alarm when a fire breaks out in a tunnel have been developed (see, for example, Patent Document 1 and Patent Document 2).

The technique described in Patent Document 1 relates to a tunnel fire notification facility for notifying a moving driver that a fire has occurred in a tunnel. In this tunnel fire notification equipment, smoke generators are arranged at predetermined intervals in the traveling direction in the tunnel, and when a fire is detected, the control device operates the smoke generators installed in the fire occurrence section and the section on the approach side to emit smoke. It has become like. In addition, flashlights and swivel warning lights arranged at predetermined intervals in the traveling direction in the tunnel are installed, and when a fire is detected, the control device uses the flashlights or swivel warning lights installed in the fire occurrence section and the section on the approach side thereof. It is designed to operate.

In this tunnel fire notification equipment, the transmitter, the response indicator, and the fire detector provided in the fire hydrant device are connected to the disaster prevention receiving panel installed in the disaster prevention center or the like by the signal line. Further, in a vehicle equipped with an ETC device, a fire notification message is output to the roadside wireless device, and this fire notification message is wirelessly transmitted from the roadside wireless device, and the ETC device of a passing vehicle detected by the vehicle detector. To receive. Then, the fire notification telegram can be demodulated and the driver can be notified by voice message that a fire is occurring in front of the tunnel.

The technique described in Patent Document 2 relates to a tunnel warning system for notifying a user of a countermeasure for an abnormality occurring in a tunnel. This tunnel alarm system displays and outputs an alarm based on alarm position information indicating the position of its own device in response to the input of the alarm signal from the alarm device and the alarm device that activates and transmits the alarm signal when operating in the tunnel. At the same time, the first alarm device that transmits an alarm signal based on the notification signal and the second alarm device that displays and outputs an alarm based on the alarm position information indicating the position of the own device in response to the reception of the alarm signal. I have.

Further, by providing a plurality of notification devices and a plurality of alarm devices in the tunnel, when one of the plurality of notification devices is activated, the one notification device activates the notification signal and the other. A notification signal is transmitted to the notification device, and all or part of one notification device and another notification device wirelessly transmits the notification signal. Then, each of the plurality of alarm devices displays and outputs an alarm based on the alarm position information indicating the position of the own device in response to the reception of the wirelessly transmitted notification signal. With such a configuration, the notification signal is transmitted between the notification devices, and the notification signal is wirelessly transmitted from the predetermined notification device to the alarm device, so that the signal wiring between the alarm devices becomes unnecessary.

Japanese Unexamined Patent Publication No. 2011-206115 Japanese Unexamined Patent Publication No. 2015-82181

By the way, when a worker discovers a disaster at a tunnel construction site, it is necessary to move to the place where the emergency alarm device is installed and report it. Furthermore, the location of the disaster is left to the discoverer, and evacuation guidance may not be properly implemented depending on the situation.

Further, the emergency telephone and the push button type emergency alarm device installed as the emergency alarm device in the tunnel mine are installed at intervals of 200 m or less, for example. In addition, it is necessary to replace various devices and electric wires due to the laying of wiring and the movement of the center. Furthermore, if the wired LAN (or telephone line) is disconnected or does not have an emergency power supply, the cut point or the face side beyond the emergency alarm device that does not have an emergency power supply should be evacuated appropriately. You may not be able to give instructions.

In the technique described in Patent Document 1 described above, it is necessary to connect the alarm device with a wired signal line, and no consideration is given to disconnection of the wired signal line. Further, in the technique described in Patent Document 2, the notification signal is wirelessly communicated between the notification devices, but the technology relates to an alarm system when the tunnel is completed and operated, and the tunnel There is no mention of appropriately and reliably notifying the occurrence of an emergency when a worker discovers the occurrence of an emergency at the construction site.

The present invention has been proposed in view of the above circumstances, and provides an emergency warning system under a tunnel that allows a discoverer to appropriately and surely notify the occurrence of a disaster when a disaster occurs at a tunnel construction site. The purpose is to provide.

The tunnel underground emergency warning system according to the present invention has the following features in order to achieve the above-mentioned object. That is, the tunnel underground emergency warning system according to the present invention is a system for generating an alarm by a report from an operator when an emergency occurs in the tunnel underground, and includes a signal relay means and a signal transmission / reception means. It is characterized by being equipped with a mobile information terminal.

The signal relay means is a means for relaying and transmitting a signal by wireless communication, and a plurality of signal relay means are provided in the tunnel mine at predetermined intervals. The signal transmission / reception means is a means capable of transmitting / receiving a signal from each signal relay means within a predetermined range by using wireless communication having a lower directivity than the wireless communication used between the signal relay means. A portable information terminal is a means possessed by an operator and capable of transmitting and receiving signals to and from signal transmitting and receiving means and transmitting an alarm signal.

In the tunnel underground emergency alarm system having the above-described configuration, the portable information terminal can be provided with an alarm signal transmission means, an alarm signal transmission notification means, and an alarm signal transmission stop means. The alarm signal transmitting means is a means for transmitting an alarm signal based on an operator's operation. The alarm signal transmission notification means is a means for notifying the operator that the alarm signal has started to be transmitted from the start of transmission of the alarm signal until a predetermined time elapses. The alarm signal transmission stop means is a means for stopping the transmission of the alarm signal from the start of transmission of the alarm signal until a predetermined time elapses.

In the tunnel underground emergency warning system having the above-described configuration, the portable information terminal can be provided with an emergency type identification signal transmitting means for transmitting a signal for specifying the type of emergency when transmitting the warning signal.

In the tunnel underground emergency warning system having the above-described configuration, it is possible to provide a position information signal transmitting means for acquiring the position information of the mobile information terminal that has transmitted the alarm signal and transmitting the position information signal based on the acquired position information. It is possible.

In the tunnel underground emergency warning system having the above-described configuration, the location of the emergency is specified based on the location information signal received from the location information signal transmitting means, and the operator is moved away from the location of the emergency. It is possible to provide an evacuation direction indicating means for instructing evacuation.

In the tunnel underground emergency warning system according to the present invention, signals are relayed and transmitted by a plurality of signal relay means using wireless communication, and signals are transmitted and received to and from a portable information terminal owned by an operator via the signal transmission and reception means. can do. Then, the portable information terminal possessed by the worker can send an alarm signal to the signal transmitting / receiving means and can receive information on an emergency situation.

Therefore, when the worker recognizes an emergency situation, he / she sends an alarm signal using his / her own personal digital assistant, receives the alarm signal by the signal transmitting / receiving means, and then manages the computer via the signal relay means. An alarm signal can be sent to. At this time, since wireless communication is used for signal transmission / reception, there is no possibility that signal transmission / reception will be interrupted due to disconnection. Further, even if a mobile device such as a centre exists between adjacent signal relay means, by appropriately changing the installation location of the signal relay means, it is not necessary to replace various devices and electric wires.

As described above, according to the tunnel underground emergency warning system according to the present invention, when an emergency occurs at the tunnel construction site, the discoverer can appropriately and surely notify the occurrence of the emergency.

The schematic diagram which shows the schematic structure of the tunnel underground emergency warning system which concerns on embodiment of this invention. The functional block diagram of the tunnel underground emergency warning system which concerns on embodiment of this invention. Schematic diagram of the main screen of a mobile information terminal. The schematic diagram of the alarm signal transmission notification screen of a mobile information terminal. Schematic diagram of the evacuation direction instruction screen of the mobile information terminal. The schematic diagram of the alarm management screen in the tunnel underground emergency alarm system which concerns on embodiment of this invention. The flowchart of the alarm generation processing in the tunnel underground emergency alarm system which concerns on embodiment of this invention. Enlarged view of the alarm management screen.

Hereinafter, the tunnel underground emergency warning system according to the embodiment of the present invention will be described with reference to the drawings. 1 to 8 show the tunnel underground emergency warning system according to the embodiment of the present invention, FIG. 1 is a schematic diagram of the system, FIG. 2 is a functional block diagram, and FIG. 3 is a schematic diagram of the main screen of a mobile information terminal. FIG. 4 is a schematic diagram of an alarm signal transmission notification screen of a mobile information terminal, FIG. 5 is a schematic diagram of an evacuation direction instruction screen of a mobile information terminal, FIG. 6 is a schematic diagram of an alarm management screen, and FIG. 7 is an alarm generation process. The flowchart and FIG. 8 are enlarged views of the alarm management screen.

<Overview of tunnel underground emergency warning system>
As shown in FIG. 1, the tunnel underground emergency warning system according to the embodiment of the present invention uses two wireless communication means (signal relay means 10, signal transmission / reception means 20) as a main configuration, and is used by an operator. When an emergency situation that occurs in the tunnel mine is discovered, it is possible to promptly and surely notify the occurrence of the emergency situation and issue an alarm.

The two wireless communication means are a plurality of signal relay means 10 for transmitting and receiving signals over almost the entire area inside the tunnel, and an emergency situation occurs from a worker within the wireless communication range of each signal relay means 10. It is a signal transmitting / receiving means 20 for receiving a notification signal. The signal relay means 10 uses highly directional wireless communication (for example, long-distance Wi-Fi) in order to reliably transmit and receive signals between adjacent signal relay means 10. Further, the signal transmitting / receiving means 20 is a radio having low directivity so that the signal can be reliably transmitted / received to / from the mobile information terminal 30 possessed by the worker in each area in charge of transmitting / receiving the signal. Communication (eg, short-range Wi-Fi) is used.

As described above, the tunnel underground emergency warning system according to the embodiment of the present invention is composed of a backbone network for connecting the signal relay means 10 via LAN and a short-range network for connecting the signal transmitting / receiving means 20 and the mobile information terminal 30 via LAN. ing.

<Signal relay means>
The signal relay means 10 is a device for relaying and transmitting a signal by wireless communication. For example, a long-distance Wi-Fi having high directivity (radio waves reach only the vicinity of adjacent signal relay means 10) is used. It consists of a wireless communication device that performs wireless communication. As shown in FIG. 1, a plurality of the signal relay means 10 are installed at intervals of, for example, 500 m to 600 m, and power is supplied by the power cable 40.

Each signal relay means 10 is provided with an UPS (uninterruptible power supply / not shown), and can operate for a predetermined time even when the power supply via the power cable 40 is interrupted. It has become. The operating time by UPS depends on the performance of UPS, but in order to maintain the emergency warning system, it is preferable to use UPS that can secure the operating time of about 30 minutes to 2 hours.

Further, as shown in FIG. 1, a SIP server 50 is connected to the signal relay means 10 on the wellhead side, and the signal relay means 10 and the signal transmission / reception means 20 are used for telephone communication with the mobile information terminal 30. It can be performed. Further, the signal relay means 10 may include a telephone and an alarm button.

<Signal transmission / reception means>
The signal transmission / reception means 20 is a device capable of transmitting / receiving signals from each signal relay means 10 within a predetermined reach by using wireless communication having a lower directivity than the wireless communication used in the signal relay means 10. For example, it comprises a wireless device that performs wireless communication using a short-range wireless Wi-Fi having low directivity (radio waves reach a wide range / omnidirectional). As shown in FIG. 1, the signal transmitting / receiving means 20 is installed at substantially the same position as each signal relay means 10.

Like the signal relay means 10, the signal transmission / reception means 20 is supplied with power by the power cable 40, and the power is also supplied from the UPS (uninterruptible power supply) installed in each signal relay means 10. ing. Since the signal relay means 10 and the signal transmission / reception means 20 are installed at substantially the same position, the communication between the two may be wired communication or wireless communication, or both may be used in combination for communication. May be done. For example, in a normal state, signals are transmitted and received by wired communication, and when a disconnection occurs, signals are transmitted and received by wireless communication.

The signal transmitting / receiving means 20 can transmit / receive signals to and from the mobile information terminal 30 owned by the operator. That is, the signal transmitting / receiving means 20 and the mobile information terminal 30 are LAN-connected by a short-distance Wi-Fi.

<Mobile information terminal>
The mobile information terminal 30 is possessed by an operator, and can transmit and receive signals to and from the signal transmitting and receiving means 20, and can also transmit an alarm signal. Since the mobile information terminal 30 of the present embodiment is highly portable, a smartphone is used, but a tablet terminal, a mobile PC, or the like may be used. As described above, the signal transmitting / receiving means 20 and the mobile information terminal 30 are LAN-connected by a short-distance Wi-Fi. Further, by lending a small receiver to a temporary mine (for example, a visitor), the small receiver may function as a portable information terminal 30. With such a configuration, a temporary digger can know the occurrence of an emergency and receive an evacuation direction instruction as well as a worker.

Further, in addition to the original communication function and telephone function, the mobile information terminal 30 has an alarm signal transmitting means 31, an alarm signal transmitting / notifying means 32, an alarm signal transmitting / stopping means 33, and an emergency situation type identification, as shown in FIG. It has functions as a signal transmitting means 34, a position information signal transmitting means 35, and an evacuation direction indicating means 36. Each means exerts its function when the application program installed in the mobile information terminal 30 operates in cooperation with hardware such as a CPU built in the mobile information terminal 30.

<Display device of mobile information terminal>
On the display device (liquid crystal display device) of the mobile information terminal 30, in addition to general operation icons such as telephone, calendar, and mail, as shown in FIGS. 3 to 6, operations for use in the present embodiment. Icons and various screens are displayed. For example, as shown in FIG. 3, an alarm signal transmission icon 31a for transmitting an alarm signal is displayed on the main screen. Further, the display device of the mobile information terminal 30 transitions from the main screen, and as shown in FIG. 4, displays an alarm signal transmission notification screen displayed after operating the alarm signal transmission icon 31a. On the alarm signal transmission notification screen, the alarm signal transmission stop icon 33a for stopping the transmission of the alarm signal is displayed.

Further, although not shown, an emergency type identification screen for transmitting an emergency type identification signal may be displayed. Further, as shown in FIG. 5, an evacuation direction instruction screen for instructing the evacuation direction may be displayed. Further, the voice generation means (sound source storage device, voice synthesizer, voice amplification device, speaker, etc.) built in the mobile information terminal 30 may generate voice corresponding to the above-mentioned operation.

<Means for transmitting alarm signals>
The alarm signal transmitting means 31 is a means for transmitting an alarm signal based on an operator's operation, and as shown in FIG. 3, the alarm signal transmitting icon 31a displayed on the display device of the mobile information terminal 30 and the alarm signal transmitting icon 31a. It consists of a program for transmitting an alarm signal by operating (for example, tapping) the alarm signal transmission icon 31a. When the worker discovers an emergency situation, the alarm signal is transmitted by operating the alarm signal transmission icon 31a displayed on the display device of the mobile information terminal 30.

<Alarm signal transmission notification means>
The alarm signal transmission notification means 32 is a means for notifying the operator that the alarm signal has started to be transmitted from the start of transmission of the alarm signal to the elapse of a predetermined time, and is as shown in FIG. An alarm signal transmission notification screen indicating that an alarm signal has been transmitted is displayed on the display device of the mobile information terminal 30, and an alarm sound is generated from the built-in speaker.

The alarm signal transmission notification screen has an alarm signal transmission display 32a (an image expressing the ringing of a bell) that blinks when a sound is generated from the built-in speaker, and an alarm signal transmission stop icon 33a (an image expressing the ringing of a bell). The “STOP” image) and the position change icon 35a (“position change” image) for changing the disaster occurrence position are displayed. In addition, the alarm signal transmission notification screen may be changed to an emergency type identification screen (not shown) for specifying the type of disaster that has occurred, or an emergency type identification icon (fire, flood, collapse, collapse, etc.). An icon) for selecting the occurrence of an injured person or the like may be displayed.

<Means for stopping transmission of alarm signal>
The alarm signal transmission stop means 33 is a means for stopping the transmission of the alarm signal from the start of transmission of the alarm signal until a predetermined time (for example, 30 seconds) elapses. The alarm signal transmission stop means 33 is a means for stopping the transmission of the alarm signal when the operator has emitted the alarm signal due to an erroneous operation, or when the emergency signal can be immediately resolved even if an emergency occurs. Is. As described above, the alarm signal transmission stop icon 33a (STOP image) is displayed in the alarm signal transmission notification screen as shown in FIG. 4, but may be displayed as a separate screen.

<Emergency type specific signal transmission means>
The emergency type identification signal transmitting means 34 is a means for transmitting a signal for identifying the type of emergency when transmitting an alarm signal. The types of emergencies are, for example, fires, floods, collapses, outbreaks of injured and sick people. As described above, the alarm signal transmission notification screen (FIG. 4) may be transitioned to the emergency type identification screen (not shown) for specifying the type of disaster that has occurred, or the emergency type identification icon (not shown) may be used. An icon / not shown) for selecting a fire, flood, collapse, occurrence of an injured person, etc. may be displayed.

Further, when identifying the type of emergency, it is preferable to inform the relationship between the discoverer and the position where the emergency occurred. For example, by notifying the discoverer whether the location of the emergency is on the wellhead side or the face side, it becomes effective information when instructing the evacuation direction. The place where the emergency occurs may be estimated from a conversation using the telephone function of the mobile information terminal 30 or an image taken by using the camera function. Alternatively, a gyro and a compass may be used to notify the location of the emergency by pointing the mobile information terminal 30 at the location of the emergency for a predetermined time.

<Location information signal transmission means>
The position information signal transmitting means 35 is a means for acquiring the position information of the mobile information terminal 30 that has transmitted the alarm signal and transmitting the position information signal based on the acquired position information. Generally, since the GPS function cannot be used in the tunnel, the position information of the mobile information terminal 30 that has transmitted the alarm signal is received by the signal transmitting / receiving means 20 that transmits / receives information to / from the mobile information terminal 30. Estimated based on strength. Further, the mobile information terminal 30 is provided with a short-range wireless function, and the information transmission / reception means 20 (signal relay means 10) receives the identification ID of the mobile information terminal 30 to identify the mobile information terminal 30. The position information may be obtained.

For example, when the worker is between the signal transmitting / receiving means 20 having the SSID of M1 and the signal transmitting / receiving means 20 having the SSID of M2 to transmit an alarm signal, it is based on the reception strength in M1 and the reception strength in M2. Therefore, the distance from M1 and the distance from M2 can be estimated. Thereby, the position information of the mobile information terminal 30 that has transmitted the alarm signal can be specified.

The position information signal transmitting means 35 for transmitting the position information of the mobile information terminal 30 may be a function of the mobile information terminal 30 or a function of the signal transmitting / receiving means 20 that has received the position information signal.

<Evacuation direction instruction means>
The evacuation direction indicating means 36 identifies the place where the emergency occurs based on the position information signal received from the position information signal transmitting means 35, and evacuates the worker in a direction away from the place where the emergency occurs. It is a means to instruct. The evacuation direction instruction by the evacuation direction instruction means 36 is performed, for example, by the display device of the mobile information terminal 30. That is, as shown in FIG. 5, the display device of the mobile information terminal 30 has an emergency type display 36a (fire in the example shown in FIG. 5), a place of occurrence (around 300 m from the wellhead), and an evacuation direction instruction display 36b (wellhead direction). In addition to displaying information such as (evacuation to), an alarm sound is generated from the built-in speaker, and the above-mentioned information is voice-guided.

Further, although not shown, an arrow lamp, a voice generator, or the like may be installed at an appropriate place in the mine to instruct the worker in the evacuation direction. In this case, these devices also function as the evacuation direction indicating means 36. The evacuation direction is instructed not only to the worker who sent the alarm signal, but also to all the workers in the mine. At this time, the position information of each worker can be acquired by the function of the position information signal transmitting means 35.

<Management computer>
The signal relay means 10 is connected to the management computer 60 and can transmit and receive signals to and from each other. The management computer 60 is installed in a management office or the like outside the tunnel, and transmits / receives signals to / from the signal relay means 10 (signal transmission / reception means 20), various judgment processes, and transmission of instruction signals based on the judgment processes. And so on. That is, in the present embodiment, various information collected in the tunnel mine is transmitted to the management computer 60 to perform a determination process, and based on the determination result, various processes related to the emergency alarm are performed. The signal relay means 10 closest to the wellhead and the management computer 60 may be connected by wire or wirelessly.

Although not shown, the management computer 60 includes a calculation means including a CPU, a storage means such as an HDD, an input means such as a keyboard, a mouse, and a touch panel, a transmission / reception means, a liquid crystal display device, and an output means such as a printer. It is provided with various means for exerting the function as 60.

<SIP server>
In the present embodiment, the SIP server 50 is connected to the signal relay means 10 (the signal relay means 10 closest to the wellhead), and is a portable information terminal via the signal relay means 10 and the signal transmission / reception means 20 connected by LAN. 30 has a telephone function.

<Power cable / LAN cable, UPS>
Normally, power is supplied to the signal relay means 10 and the signal transmission / reception means 20 via the power cable 40. Further, the signal relay means 10 is LAN-connected to the management computer 60 via a LAN cable. The power supply via the cable and the wired LAN connection are premised on normal use, and the tunnel underground emergency alarm system according to the present invention is a long-distance Wi-Fi in the event of an emergency. By using the short-distance Wi-Fi and the mobile information terminal 30 owned by the worker and the management computer 60 via LAN, it is possible to reliably adapt to the occurrence of an emergency.

Further, UPS (uninterruptible power supply) is connected to the signal relay means 10 and the signal transmission / reception means 20, and even if the power cable 40 is disconnected or a power failure occurs, the signal relay means 10 and the signal The power supply of the transmission / reception means 20 can be backed up. Therefore, even if the power supply from the power cable 40 is interrupted due to an unexpected disaster, the tunnel underground emergency warning system is operated for the predetermined time required for the worker to report and evacuate. Can be made to.

<Application to Centre>
During the construction of the tunnel, there is lining work, and it is common to install a centre for lining. A general centre is designed to be lining every 10.5 m, and the lining is constructed while moving in the extension direction of the tunnel. In the conventional technology, if a centre is present in the tunnel, it is necessary to replace various devices and electric wires every time the center is moved.

On the other hand, in the tunnel underground emergency warning system according to the present invention, by installing the signal relay means 10 and the signal transmission / reception means 20 in the center, it is not necessary to replace various devices and electric wires, and the working time is reduced. Not only can this be shortened, but the emergency warning system in the tunnel will not be stopped due to various equipment and wire replacement work, etc., so that safety against the occurrence of an emergency situation can be enhanced.

<Procedure for generating an emergency alarm>
The procedure for generating an emergency alarm using the above-mentioned tunnel underground emergency alarm system will be described with reference to FIGS. 3 to 8.

A signal relay means 10 and a signal transmission / reception means 20 are installed at appropriate locations (for example, every 500 m to 600 m) in the tunnel mine. Further, during the construction work of the lining by the centle, the signal relay means 10 and the signal transmission / reception means 20 are also installed in the center. Then, as shown in FIG. 7, when the worker (discoverer) discovers the occurrence of an emergency (fire, flood, collapse, victim, etc.) (S1), the emergency alarm application of the mobile information terminal 30 (smartphone) is activated. It is activated and emits an emergency alarm signal (S2).

At this time, it is preferable to display the type of emergency (icon for selecting the type of emergency (fire, flood, collapse, occurrence of injured person, etc.)) and identify the type of emergency to the discoverer. Further, by acquiring the position information of the mobile information terminal 30 that has transmitted the alarm signal, the place where the emergency occurs (reporting place) can be specified. In addition, the discoverer may use the telephone function to report the type and location of the emergency, or the imaging means (camera function) built into the mobile information terminal 30 may be used to photograph the location of the emergency. An image may be transmitted (S2).

Specifically, as shown in FIG. 3, when the alarm signal transmission icon 31a of the display device (main screen) of the mobile information terminal 30 is operated, the alarm signal transmission notification screen is displayed on the display device. As shown in FIG. 4, the alarm signal transmission notification screen is a screen for displaying to the display device of the mobile information terminal 30 that an alarm signal has been transmitted, and at the same time, an alarm sound is generated from the built-in speaker.

Then, if the discoverer does not operate the alarm signal transmission stop icon 33a (STOP image) within a predetermined time on the alarm signal transmission notification screen, the alarm signal transmission is continued. On the other hand, if the alarm signal transmission stop icon 33a (STOP image) is operated within a predetermined time (S3), the alarm signal transmission is stopped as if the discoverer made an erroneous operation or the emergency situation was resolved (S3). S4).

Various information in the event of an emergency is transmitted to the management computer 60, and appropriate processing is performed. That is, when the management computer 60 receives various emergency signals, information for notifying the occurrence of an emergency is transmitted to the mobile information terminals 30 (smartphones) of all the workers in the mine, and FIG. As shown, the occurrence of an emergency is displayed on the display device, and a sound for notifying the occurrence of the emergency is generated from the built-in speaker (S5).

That is, as shown in FIG. 5, information such as the type of emergency (fire), the place of occurrence (around 300 m from the wellhead), the evacuation direction of the worker (evacuation toward the wellhead), etc. is displayed on the display device of the mobile information terminal 30. Is displayed and an alarm sound is generated from the built-in speaker (S5). Further, a siren installed in the mine or an alarm bell provided in the signal relay means 10 may be ringed, and a warning light may be turned on or blinked to display a warning. Further, the evacuation direction may be indicated by an arrow lamp, a display device, or the like.

Further, as shown in FIGS. 6 and 8, the display device of the mobile information terminal 30 and the display device attached to the management computer 60 can be used as an alarm management screen to indicate the place where an emergency occurs, the situation of an emergency, and the work in the mine. It is preferable that the workers and managers can take appropriate measures by displaying the number and position of the persons (S6). It is preferable that the alarm notification to the worker and the alarm notification to the manager are performed at the same time.

In the examples shown in FIGS. 6 and 8, the position where an emergency (fire) occurs and the position of each worker are displayed, and the worker icons having a size corresponding to the number of workers are displayed. For example, when there is a worker who is moving in a direction different from the direction to be evacuated, the manager uses the worker's mobile information terminal 30 to instruct an appropriate evacuation direction or request relief. Can be done.

Further, in the example shown in FIG. 6, an example in which the alarm management screen is displayed on the display device of the mobile information terminal 30 (smartphone) is shown, but the alarm management screen is displayed on the display device attached to the management computer 60. May be good. When displaying the alarm management screen on the display device of the management computer 60, it is possible to display more detailed information than the examples shown in FIGS. 6 and 8. For example, comprehensive alarm management can be performed by displaying the detailed position of each worker, the scale of an emergency, the response status of each worker, the operation icons of various alarm devices, and the notification icon to the relevant government agencies. Can be done.

10 Signal relay means 20 Signal transmission / reception means 30 Mobile information terminal 31 Alarm signal transmission means 31a Alarm signal transmission icon 32 Alarm signal transmission notification means 32a Alarm signal transmission stop display 33 Alarm signal transmission stop means 33a Warning signal transmission stop icon 34 Emergency type identification Signal transmission means 35 Position information signal transmission means 35a Position change icon 36 Evacuation direction instruction means 36a Emergency type display 36b Evacuation direction instruction display 40 Power cable 50 SIP server 60 Management computer

Claims (5)

It is a system to generate an alarm by a report from a worker when an emergency occurs in the tunnel mine.
Multiple signal relay means that relay and transmit signals by wireless communication,
A signal transmission / reception means capable of transmitting / receiving signals from each signal relay means within a predetermined range by using wireless communication having a lower directivity than the wireless communication used between the signal relay means.
A mobile information terminal possessed by an operator, capable of transmitting and receiving signals to and from the signal transmitting and receiving means, and capable of transmitting an alarm signal.
An emergency warning system in the tunnel, which is characterized by being equipped with. The mobile information terminal is
An alarm signal transmitting means that transmits an alarm signal based on an operator's operation,
From the start of transmission of the alarm signal to the elapse of a predetermined time, the alarm signal transmission notification means for notifying the operator that the alarm signal has started to be transmitted, and
An alarm signal transmission stop means for stopping the transmission of the alarm signal from the start of transmission of the alarm signal until a predetermined time elapses.
The tunnel underground emergency warning system according to claim 1, wherein the system is provided with. The mobile information terminal is
The tunnel underground emergency warning system according to claim 1 or 2, further comprising an emergency type identification signal transmitting means for transmitting a signal for specifying the type of emergency when transmitting an alarm signal. The third to third aspects of claim 1, wherein the position information signal transmitting means for acquiring the position information of the mobile information terminal that has transmitted the warning signal and transmitting the position information signal based on the acquired position information is provided. The tunnel underground emergency warning system according to any one item. An evacuation direction indicating means that identifies the place where an emergency occurs based on the position information signal received from the position information signal transmitting means and instructs the worker to evacuate in a direction away from the place where the emergency occurs. The tunnel underground emergency warning system according to claim 4, wherein the system is provided.

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