JP2003009214A - Method and system for managing location of pit worker and movable vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent crosstalk of radio waves and also to extend the operating time of a battery by suppressing battery consumption of mobile radio in performing location management of pit workers and movable vehicles. SOLUTION: Sub fixed stations 2 are fixedly arranged along the extending direction of a tunnel in an appropriate interval so as to overlap radio wave reachable areas on each other to construct a two-way transmission system in the extending direction of the tunnel. Each of the sub fixed stations 2 can respectively and mutually communicate with mobile stations 32 , 33 ,... carried by the pit workers and with a mobile station 31 mounted on a movable vehicle 7 under a certain condition inside the radio wave reachable area. The sub fixed stations 2 fixedly arranged inside the tunnel calls each of mobile stations 31 , 32 , 33 ,... moving inside the tunnel in turn by transmitting a call signal, a mobile station 3n responding to the call signal instantly transmits a response signal in the form of responding to the call signal, and the current location of the pit worker and the movable vehicle 7 are grasped according to the position of a sub fixed station 2n that receives the response signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position management method and a position management system for diggers and moving vehicles in a tunnel.

[0002]

2. Description of the Related Art In recent years, in tunnel construction and the like, as part of safety management and labor management in the mine, vehicle accidents can be prevented by monitoring the position of a moving vehicle such as a battery loco that moves in the mine by radio. In addition to preventive measures, workers and staff (collectively referred to as diggers) are also managed in and out of the tunnel.

For example, in Japanese Unexamined Patent Publication No. 11-34871 (Prior Art 1), a magnet is attached to a battery locomotive, and a battery is installed at a position with a proper distance along a track laid from a wellhead to a face of a face in a tunnel. In addition to installing a magnetic sensor to detect the current and traveling direction of the loco, install a relay unit to which a patrol light is connected, and when the battery loco approaches, the relay unit lights the patrol light that detected it, and work A safe driving management system for a battery loco has been proposed that informs employees and staff members of the approach of the battery loco.

On the other hand, regarding the management of the person who entered the pit, conventionally, a method of displaying the entry into the pit by reversing the name plate of the entry management board was often used, but in recent years, it has been installed in the pit. Automatically detects the person entering the tunnel, or as proposed by the applicant in the above-mentioned Japanese Patent Application No. 2000-160008, a wireless mobile transceiver (hereinafter also referred to as mobile radio) carried by the person entering the tunnel. .) Is always a few bits of I
A method has also been proposed in which the D signal is transmitted and the position of the digger is determined from the position of the fixed transceiver in the tunnel that receives the D signal.

[0005]

However, in order to construct a position management system for all moving bodies including diggers and moving vehicles, it is necessary to prepare frequency bands corresponding to the number of mobile stations. However, it is often difficult for a communication system based on specific low power radio and the like, and there are problems that a good communication state cannot be secured because various frequencies are crossed in a pit.

Further, as described above, when the ID signal is constantly transmitted from the mobile radio, there is a problem that the battery is consumed so much that the battery needs to be charged in about 2 hours. It was

Therefore, a first object of the present invention is to grasp the positions of the digging person and the moving vehicle by communicating with the mobile radio carried by the digging person and the mobile radio mounted on the moving vehicle. (EN) Provided are a position management method and a position management system for a digger and a moving vehicle capable of preventing radio lines from crossing each other to ensure a good communication state and suppressing the battery consumption of a mobile radio to extend the usage time. Especially.

The second problem is that in addition to the above problems,
It is an object of the present invention to provide a position management method and a position management system for a digger and a moving vehicle, which enables communication with many mobile radios by using as few communication frequencies as possible.

[0009]

In order to solve the above-mentioned first problem, according to the present invention according to claim 1, a wireless system is provided at appropriate intervals along a tunnel extension direction so that radio wave arrival areas overlap each other. While the transceivers are fixedly arranged, a bidirectional transmission system is constructed in the tunnel extension direction by these wireless fixed transceiver groups, and under the condition that each wireless fixed transceiver is within the radio wave reachable area, A wireless fixed transmitter / receiver, which is fixedly arranged in the tunnel, is capable of communicating with a wireless mobile transmitter / receiver carried by a digger and a wireless mobile transmitter / receiver mounted on a moving vehicle. Sequentially call each of the wireless mobile transceivers moving in the tunnel, and the wireless mobile transceiver corresponding to the call signal instantaneously sends a response signal in a form of responding to the call. And, entrance into drift person and location management method of a mobile vehicle, characterized in that to grasp the current position of the entrance into drift's and moving vehicles from the position of the wireless fixed transceiver that has received the response signal.

In the invention according to claim 1, the wireless fixed transceivers fixedly arranged in the tunnel sequentially call the respective wireless mobile transceivers moving in the tunnel, and the wireless corresponding to the calling signal is transmitted. The mobile transmitter / receiver instantaneously transmits a response signal in response to the call. Therefore, since the wireless fixed transceiver and the wireless mobile transceiver that are used are always only one system, it is possible to completely prevent radio wave crosstalk. Further, since the wireless mobile transmitter / receiver instantaneously transmits a response signal only when its own call is made, it is possible to suppress battery consumption and extend the durability time.

In order to solve the second problem, the present invention according to claim 2 is such that radio transceivers are fixedly arranged at appropriate intervals along the tunnel extension direction so that the radio wave arrival areas overlap each other. At the same time, a bidirectional transmission system is constructed in the tunnel extension direction by these wireless fixed transceiver groups, and each wireless fixed transceiver is carried by the digger under the condition that it is within the radio wave arrival area. The wireless mobile transceiver and the wireless mobile transceiver mounted on a mobile vehicle can communicate with each other, and the wireless mobile transceiver fixedly arranged in the tunnel can communicate with a plurality of switchable frequencies. In addition, it is possible to transmit a plurality of ringing signals including ID information for each frequency, while each of the wireless mobile transceivers moving in the tunnel has the plurality of frequencies. Together are capable of communicating with each other and the wireless-type fixed transceiver at any frequency of the,
Any one of the plurality of ID information is assigned, a response signal including the assigned ID information can be transmitted, and the wireless fixed transceiver fixedly arranged in the tunnel changes the frequency. While sequentially switching, each of the wireless mobile transceivers moving in the tunnel is sequentially called by sequentially transmitting a paging signal including ID information for each frequency, and the wireless mobile transceiver corresponding to the paging signal is The present invention is characterized in that a response signal including ID information is momentarily transmitted in response to a call, and the current positions of the entrance person and the moving vehicle are grasped from the position of the wireless fixed transceiver which receives the response signal. A method for managing the positions of a digger and a moving vehicle is provided.

In the invention according to claim 2, by combining a plurality of IDs with a plurality of frequencies, "I
It is possible to prepare as many identification signals as the number of D times the number of frequencies, and it is possible to communicate with many wireless mobile transceivers by using as few communication frequencies as possible.

According to a third aspect of the present invention, the response signal from the wireless mobile transceiver mounted on the mobile vehicle includes traveling direction information.
2. A position management method for a digger and a moving vehicle according to any of 2 above is provided.

According to a fourth aspect of the present invention, a single frequency is assigned to the wireless mobile transceiver mounted on the mobile vehicle, and a fixed wireless transceiver is fixedly arranged in the tunnel. The method for managing the positions of a digger and a moving vehicle according to any one of claims 1 to 3, wherein the wireless mobile transceiver mounted on the moving vehicle is called every time the frequency is switched when calling the device. To be done.

According to a fifth aspect of the present invention, the wireless transceivers are fixedly arranged at appropriate intervals along the tunnel extension direction so that the radio wave arrival areas overlap each other, and a group of these wireless fixed transceivers is arranged. By constructing a bidirectional transmission system in the tunnel extension direction, and under the condition that each wireless fixed transceiver is within the radio coverage area,
In a communication system in a tunnel capable of mutually communicating with a wireless mobile transceiver carried by a digger and a wireless mobile transceiver mounted in a mobile vehicle, a wireless fixed transceiver fixedly arranged in the tunnel Has a calling function for sequentially calling each of the wireless mobile transceivers moving in the tunnel by transmitting a calling signal, while the wireless mobile transceiver corresponding to the calling signal responds to the calling with a response signal. A momentary transmission function is provided, and a position display device for displaying the current positions of the entrance person and the moving vehicle, which is calculated from the position of the wireless fixed transceiver that has received the response signal, is provided. A location management system for a digger and a moving vehicle is provided.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Communication System in Tunnel Underground] First, a communication system in a tunnel underground required for carrying out the position management method will be described in detail. Figure 1
FIG. 2 is a schematic diagram of a communication system in a tunnel, and FIG. 2 is an enlarged view of a main part thereof.

As shown in FIGS. 1 and 2, a wireless fixed transceiver is installed in the central control room S to serve as an information communication main fixed station 1 (hereinafter, simply referred to as fixed station) and a tunnel. At intervals within the radio wave reach along the extension direction, for example, 100 to 1000 m, preferably 150 to 5 m
Wireless fixed transmitters / receivers are installed at intervals of 00 m to serve as information transmission secondary fixed stations 2, 2, ... (Hereinafter, simply referred to as secondary fixed station). .. can be set by adjusting the output of radio waves. The main fixed station 1 and the sub fixed stations 2, 2 ... Can communicate with the adjacent fixed stations 2, 2, respectively. Specifically, the signal transmitted from the fixed station 1 in the central control room S is transmitted in the order of the fixed station 1 → the sub-fixed stations 2 ₁ , 2 ₂ , 2 ₃ ... , The transmission from the secondary fixed station 2 _e installed on the face to the central control room S is performed by the secondary fixed station 2 _e.
→ Secondary fixed station 2 _e-1 → Secondary fixed station 2 _e-2 … → The signal transmitted from the second fixed station 2 _n in the order of the fixed station 1 and transmitted from the intermediate second fixed station 2 _n in both the face direction and the wellhead direction Each is transmitted. That is, a radio transmission system for transmitting radio waves bidirectionally in the tunnel extension direction is configured by serial radio wave transmission by the main fixed station 1 and the sub fixed stations 2, 2.

Since the above example is applied to the tunnel construction site, in consideration of the radio wave interference due to the tunnel curved portion and the construction machine, it is parallel to the wireless transmission system and wired such as balanced pair cable, coaxial cable or optical fiber. The information communication fixed stations 1, 2, ... Are connected by the cable 4,
A wired transmission system is also installed at the same time. Of course, at a construction site where the radio wave transmission environment is good, the fixed stations can communicate with each other wirelessly.

On the other hand, a wireless mobile transceiver 3 ₁ mounted on a mobile vehicle 7 such as a battery locomotive running in a tunnel.
And wireless mobile transceivers 3 ₂ , 3 carried by each digger
_The mobile station 3 is composed of the groups ₃ , 3, ₄ ... These mobile stations 3 ₁ , 3
₂ , 3 ₃ ... Are basically used under the condition of moving inside the tunnel pit T, and as shown in FIG. 1, radio wave arrival by the main fixed station 1 and sub fixed stations 2, 2 ... Since the areas overlap each other, the mobile stations 3, 3 ... Can mutually transmit / receive to / from one or a plurality of sub fixed stations 2, 2 ... It is in a state.

[Position Management for Immigrants and Moving Vehicles] Moving Vehicles
Mobile station 3 mounted on both 7₁And carried by the digger
Mobile station 3_TwoThree _Three, 3_Four... is each mobile station 3₁, 3_Two, 3
_ThreeHas the ID information in the outgoing information
And each mobile station 3₁, 3_TwoThree
_ThreeFrom the position of the secondary fixed station 2 that receives the radio wave transmitted by ...
It is possible to know the position in the tunnel tunnel T.

In order to know the positions of the mobile stations 3 ₁ , 3 ₂ , 3 _3, ... In the present embodiment, the sub fixed stations 2, 2 ... Send the call signals to the mobile stations 3 ₁ , 3 ₂ ,. 3 3 _... calls the order carried out in, the ID information corresponding to the calling signal mobile station 3 _n assigned originates a response signal including the ID information in the form that responds to the call. Then, the position of the mobile station 3 _n is determined from the position of the secondary fixed station 2 that has received the response signal.

Hereinafter, a more preferable call / answer mode will be described in detail based on specific examples.
... and each mobile station 3 ₁ , 3 ₂ , 3 ₃ ... during communication,
When a predetermined number of communication frequencies, for example, 11 kinds of communication frequencies I to XI are prepared, first, the communication frequencies of I to X are compared with the mobile stations 3 ₂ , 3 ₃ ... It is allocated for communication, and the communication frequency XI is independently allocated for communication with the moving vehicle 7.

The sub fixed stations 2, 2 ...
It is possible to switch the frequency to the communication frequency,
For example, a call signal including ID information of A to J is transmitted to each of the communication cycles.
It is supposed to be able to transmit on radio waves of the wave number. Also, the move
Mobile station 3 mounted on vehicle 7 ₁Moving car to call
Call signal can be transmitted by dual-use communication frequency XI
There is.

On the other hand, mobile stations 3 ₂ , 3 ₃ carried by diggers
In ..., the sub fixed station 2 can be communicated with any of the communication frequencies of I to X and the ID of any of A to J is assigned. A response signal including its own ID information can be instantaneously transmitted. Further, in the mobile station 3 ₁ mounted on a moving vehicle 7, and can transmit a response signal by the communication frequency of the XI.

In the above example, the dedicated communication frequency XI is assigned to the moving vehicle 7. However, it is treated in the same manner as the mobile stations 3 ₂ , 3 _3, ... The ID of any of A to J may be assigned to any of the frequencies.

The communication function, specifically, the calling function in the secondary fixed stations 2, 2, ..., The mobile stations 3 ₁ , 3 ₂ , 3
₃ , the sub-fixed stations 2, 2 ... At first, as shown in FIG. 3, the sub fixed stations 2, 2 ... Transmit the call signal including the ID information in the order of A to J at the communication frequency I. performs, performs transmission of the last mobile station 3 _first paging signal mounted on a moving vehicle 7, then the communication frequency II
In, performs transmission of the call signal including the ID information in the order of A-J, performs transmission of the last mobile station 3 _first paging signal mounted on a moving vehicle 7, since the communication in order frequency
In III～X, performs transmission of the call signal including the ID information in the order of A-J, by repeating the call procedure for transmission of installed mobile station 3 _first paging signal to a mobile vehicle 7, each mobile station 3 ₁ , 3 ₂ , 3, ₃ ... Are sequentially called. In the figure, I * A means that the ID information of A is transmitted at the frequency I.

Each mobile station 3₁, 3_Two, 3_ThreeIn ...
For example, the mobile station 3 to which the communication condition of II * B is given_nIs II *
If you catch the radio wave of B, your own ID information (B)
A response signal including a signal is transmitted instantaneously (about 0.5 seconds). This
Substation 2 which received the response signal of_nSends this response signal
Secondary fixed station 2 which sent to central control room S and received the response signal _n
Mobile station 3 to which the II * B communication condition is added from the position_n
The current position of is determined. Two sub fixed stations 2,
When the response signal is received by 2, the radio wave arrival error
Since it will be the overlapping area, the center of the secondary fixed stations 2 and 2
It can be judged to be a place. In addition, the
If the area is large, the reception level of each of the secondary fixed stations 2 and 2
Mobile station 3 comparing bells_nThe current position of
It is possible to calculate

The reason why the moving vehicle 7 is called for each communication frequency is that the moving vehicle 7 moves faster than the digging person, so that the current position is frequently grasped. This is because. Further, upon transmission of response signals from the mobile station 3 ₁ mounted on a moving vehicle 7, whether running on the tunnel face side, including the traveling direction information of either running the tunnel wellhead side response signal transmission By doing so, it is possible to grasp the traveling direction as well as the current position of the moving vehicle 7. In the central control room S, as shown in FIG. 4, each mobile station 3 ₁ ,
The positions of 3 ₂ , 3 ₃ ... Are indicated by a lamp.

By the way, it is desirable for the person entering the pit to perform the entrance control at the same time as confirming the current position in the tunnel pit T. For example, as shown in Fig. 5, an RF that stores its own identification information for a helmet
-The ID tag 40 is provided, and when passing through the wellhead gate 41, the radio wave transmitted from the sheet antenna 42 is transmitted to the RF
-The ID tag 40 receives and transmits the toneback ID signal, and the toneback ID signal is transmitted to the wellhead gate 4
The entry person management device 43 installed beside 1 stores the ID of the entry person who has received and passed, and the entry person management device 4
The lamp is displayed on 3. It is desirable that the ID signal of the digger is also sent to the central control room S. After that, when the digging person exits from the tunnel, when the pit entrance gate 41 is passed, the stored ID is erased and the lamp is turned off. You can check it.

Although the location management method of the digger and the moving vehicle has been described in detail for the tunnel construction site, this method is applicable to the construction work of a large-scale underground space, the dam construction work, etc. in addition to the tunnel. Applicable.

By the way, the communication system by the main fixed station 1 and the sub fixed stations 2, 2 ... Includes a voice for communication between the staff in the central control room S and staff / workers in the mine, and communication between workers. Call signal, CCD installed in various places in the mine
Image information signals taken by shooting devices such as cameras and sensor signals from various sensors installed inside the mine and in the ground, shield machines, excavators such as tunnel boring machines, mortar or concrete sprayers, drill jumbo, etc. It is used as a transmission system for data signals, such as various measurement signals sent from, tunnel operation machine operation status signals, machine remote control signals, and the like.

As shown in FIG. 6, the main fixed station 1 and the sub fixed station 2 are respectively a transmission / reception section 5 and an information control section 6.
In the main fixed station 1 which is a transmitter / receiver composed mainly of information and is a main source of information and a main source of information, the operation control panel 11 of the construction machine and the monitors 12 and 13 for monitoring cameras are installed to the information communication main fixed station 1. , Computers 14 and 15, emergency microphones 16 and extension telephones 17 for collecting construction information from various construction machines, collecting and storing measurement data of measurement sensors, and performing processing and analysis.
And an outside line telephone 18 and the like are connected.

On the other hand, in the sub fixed station 2 installed in the mine,
For example, various types of sensors, construction status sensors from various construction machines, remote control equipment 24, etc. are connected to the extension telephone 20, the monitoring camera 21, the emergency speaker 22, the patrol light 23, and various data signal input / output sections, and these voice signals are output. , Various multimedia information such as image signals and data signals are transmitted in the information transmission between the sub fixed stations 2, 2, ...
It is multiplexed and transmitted.

More specifically, as shown in FIG. 7, the image signal taken by the surveillance camera 21 is coded by the video coding unit 31 via the video control unit 30, that is, the time signal is encoded. Discretization in direction (sampling), discretization in amplitude direction (quantization), binarization, and digitization processing suitable for multiplex transmission. Further, the extension telephone 20 is provided with a voice encoding / decoding unit 32 because bidirectional communication for transmission and reception is required. Further, in order to digitize analog signals of data communications, an emergency equipment encoding / decoding unit 33a, various sensor encoding / decoding unit 33b, construction data / control encoding / decoding unit 33c. The respective signals are encoded by. In addition,
The reason why the signal conversion unit for the data signals has the decoding function at the same time is that the data signals can be taken out.

These various kinds of multimedia information are centralized and managed by the control unit (CPU) 34, multiplexed by the multiplexing / demultiplexing unit 35, and then transmitted by the wireless transmission / reception unit 5 and the wired cable 4 to obtain information. The fixed stations 2, 2, ..., Which relay, transmit various multimedia information while repeating the accumulation and transfer of information. Control unit (CPU) at each sub fixed station 2, 2 ...
By repeatedly accumulating and transmitting (transmitting) information to 34, it becomes possible to accurately transmit each multimedia information while preventing attenuation / deterioration of radio waves and noise mixing, and also to all sub fixed stations. 2 and 2 can centrally hold the same information, it is possible for an employee or a worker to arbitrarily retrieve desired information from any of the secondary fixed stations 2, 2 and so on. .

The multiplexing is roughly divided into a time division multiplexing method in which a voice signal, an image signal and a data signal are mixed for each allocation bit in a transmission frame, and a frequency division multiplexing method in which information is allocated to each frequency-divided channel. There are methods and wavelength division multiplexing methods that allocate information to each wavelength-divided channel for optical fibers, but especially when transmitting data signals, various sensor signals, construction status signals, operation control signals, and other data. In order to transmit signals in real time,
It is desirable to use time division multiplexing so that various information can be transmitted in parallel for each bit allocation. As shown in FIG. 8, when a plurality of sensor signals such as sensors No1, No2, No3, ... Are measured, one or more bits from the beginning of each data are 1 after encoding this analog measurement signal. It is taken out as a unit and assigned on the transmission frame. A synchronization signal for communication synchronization is given to the beginning of the transmission frame. If this transmission frame is sent to, for example, the main fixed station 1 in the main control room S, it will be separated and then reproduced as the measured values of various sensors in the order of decoding on a computer or by printing to a printer. , It becomes possible to transmit and display a plurality of data types in real time without delay.

In the above example, the case where all of various kinds of multimedia information are transmitted by the same type of wireless transmission system and wired transmission system has been described. However, if a dedicated wireless is used as a wireless type, permission is granted to the opening station. In addition to the requirement, there is a problem that the qualification of a wireless engineer is required for operation, and it is difficult to employ it at a construction site where the number of users is unspecified. Therefore, for voice signals and data signals, it is realistic to use a specific low-power radio or a simple mobile phone (PHS) that does not require wireless qualification. In this case, since the specific low power radio cannot transmit the video signal due to the problem of use restriction, the radio of another frequency band, for example, the FM wave or the 50 GHz band simple radio may be transmitted. Of course, only the video signal may be transmitted by the wired cable.

[0039] Further, the mobile vehicle 7 equipped with a mobile station _{3 1}
In order to perform the operation management of the mobile station 3 more accurately, an interpolating receiving station that receives a position signal from the mobile station 3 at a predetermined interval, for example, an interval of 5 to 50 m, in the middle of the sub fixed stations 2, If not shown) is installed, the position of the mobile station 3 ₁ (moving vehicle 7) can be accurately detected. Further, in the above example, as each sub-fixed station 2, an extension telephone 20, a monitoring camera 21, an emergency speaker 22, a patrol light 23, various sensors at the input / output section of various data signals, a construction status sensor from various construction machines, and a remote. Although the multi-function type transmitter / receiver to which the control device 24 and the like are connected is used, a relay device can be used instead when only mediating the transmission of information.

[0040]

As described above in detail, according to the present invention, the positions of the entrance person and the moving vehicle are grasped by the communication with the mobile radio carried by the entrance person and the mobile radio mounted on the moving vehicle. In this case, it is possible to prevent radio lines from being crossed to each other and ensure a good communication state, and it is possible to suppress the battery consumption of the mobile radio and extend the usage time.

Further, since it is possible to communicate with many mobile radios by using as few communication frequencies as possible, it is possible to manage the positions of all the diggers and moving vehicles.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a communication system in a tunnel used in the present location management method.

FIG. 2 is an enlarged view of a main part thereof.

FIG. 3 is a diagram showing a calling procedure by the secondary fixed stations 2, 2 ...

FIG. 4 is a diagram showing an example of position display of a moving vehicle and a person entering a pit.

FIG. 5 is a schematic view of an entrance control device for an entrance person.

FIG. 6 is a configuration diagram of a main fixed station 1 and a sub fixed station 2.

FIG. 7 is a control block diagram of a secondary fixed station 2.

FIG. 8 is a diagram showing time division multiplexing of data signals.

[Explanation of symbols]

1 ... Main fixed station, 2 ... Secondary fixed station, 3 ... Mobile station, 4 ... Wired cable, 5 ... Transmission / reception section, 6 ... Information control section, 7 ... Mobile vehicle, 10 ... Position display LED version

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shin Tsushima             1-17-1 Minamihonmachi, Saitama City, Saitama Sato             Industry Co., Ltd. Kanto Branch F-term (reference) 5C083 AA01 BB04 DD09 EE11 EE18                       GG05 HH35 JJ35 JJ39                 5K067 AA03 AA21 AA43 BB21 BB33                       BB41 BB43 DD17 DD24 EE02                       EE10 FF03 FF23 HH23 JJ53                       JJ54 KK15

Claims (5)

[Claims] 1. A radio transmitter / receiver is fixedly arranged at appropriate intervals along the tunnel extension direction so that radio wave reaching areas overlap each other, and bidirectional in the tunnel extension direction by these radio transmitter / receiver groups. Under the condition that each wireless fixed transmitter / receiver is within the radio wave reach area, the wireless mobile transmitter / receiver carried by the digger and the wireless mobile transmitter / receiver mounted on the moving vehicle are constructed. A wireless fixed transceiver that is fixedly arranged in the tunnel and that sequentially communicates with each wireless mobile transceiver that moves in the tunnel by transmitting a calling signal, and responds to the calling signal. The wireless mobile transmitter / receiver instantaneously transmits a response signal in the form of responding to the call, and the entrance person and the mobile vehicle are moved from the position of the wireless fixed transceiver which receives the response signal. A method for managing the positions of a digger and a moving vehicle, characterized by grasping the current positions of both. 2. A radio transmitter / receiver is fixedly arranged at appropriate intervals along the tunnel extension direction so that radio wave arrival areas overlap each other, and bidirectional in the tunnel extension direction by these radio transmitter / receiver groups. Under the condition that each wireless fixed transmitter / receiver is within the radio wave reach area, the wireless mobile transmitter / receiver carried by the digger and the wireless mobile transmitter / receiver mounted on the moving vehicle are constructed. The wireless fixed transceiver, which is fixedly arranged in the tunnel and is capable of communicating with each other, is capable of communicating at a plurality of frequencies that can be switched, and calls including a plurality of ID information for each frequency. A signal is capable of being transmitted while each of the wireless mobile transceivers moving in the tunnel is interoperable with the wireless fixed transceiver at any one of the plurality of frequencies. The communication is enabled, and any one of the plurality of ID information is assigned, and the assigned ID is assigned.
A wireless fixed transmitter / receiver that is capable of transmitting a response signal containing information and is fixedly arranged in the tunnel switches IDs for each frequency while sequentially switching frequencies.
Each of the wireless mobile transceivers moving in the tunnel is sequentially called by sequentially transmitting a paging signal containing information, and the wireless mobile transceiver corresponding to the paging signal includes ID information in response to the paging. Position management method for an entrance person and a moving vehicle characterized by instantaneously transmitting a response signal and grasping the current positions of the entry person and the moving vehicle from the position of the wireless fixed transceiver that receives the response signal. . 3. The entrance person and the moving vehicle according to claim 1, wherein the response signal from the wireless mobile transceiver mounted on the moving vehicle includes traveling direction information. Location management method. 4. A single frequency is assigned to the wireless mobile transceiver mounted on the mobile vehicle, and the frequency of the frequency is fixed when calling by the wireless fixed transceiver fixedly arranged in the tunnel. The method of managing the positions of a digger and a moving vehicle according to any one of claims 1 to 3, wherein a wireless mobile transceiver mounted on the moving vehicle is called every switching. 5. A radio transmitter / receiver is fixedly arranged at appropriate intervals along the tunnel extension direction so that radio wave arrival areas overlap each other, and bidirectional in the tunnel extension direction by these radio transmitter / receiver groups. Under the condition that each wireless fixed transmitter / receiver is within the radio wave reach area, the wireless mobile transmitter / receiver carried by the digger and the wireless mobile transmitter / receiver mounted on the moving vehicle are constructed. In the in-tunnel communication system capable of mutually communicating with the device, the fixed wireless transceiver fixedly arranged in the tunnel sequentially calls the respective wireless mobile transceivers moving in the tunnel by transmitting a paging signal. A wireless mobile transceiver corresponding to the ringing signal has a ringing function for instantaneously transmitting a ringing signal in response to the ringing; Position management of the entrance person and the moving vehicle, which is provided with a position display device that displays the current positions of the entrance person and the moving vehicle, which are calculated from the position of the wireless fixed transceiver that receives the response signal. system.