JP4563148B2 - Vehicle information collection system and vehicle information collection method - Google Patents

Description

  The present invention performs transmission / reception by a wireless LAN between a vehicle such as a dump truck used at the work site and a terminal device at a work site such as a mine, and collects vehicle information of the vehicle by the terminal device. The present invention relates to a vehicle information collection system and a vehicle information collection method.

  In general, work machines such as excavators and transport vehicles such as dump trucks are used at work sites such as mines. Such work machines and transport vehicles are regularly inspected for items such as operating time, engine rotation, and hydraulic pressure for maintenance management and early detection of failure locations. Based on the inspection result, the operating time and fuel consumption are accurately grasped, and maintenance such as oil change is performed.

  As one of methods for inspecting work machines and vehicles, for example, in WO 01/071109 (Patent Document 1), a work machine operation data transmission method in which the work machine operation status can be grasped by a remote management station. Is disclosed. According to the operation data transmission method described in Patent Document 1, the operation data of the work machine and the vehicle is stored at predetermined time intervals in the control device provided in the work machine and the vehicle, and the stored operation data is It is automatically transmitted (scheduled transmission) from the control device to a management station installed at a remote location via a predetermined communication means at a predetermined time. As a result, the management station away from the work site can surely grasp the operating status of the work machine, and can realize high-precision maintenance management of the work machine.

  In the above-mentioned patent document 1, as communication means for communicating operation data of a work machine from a control device, artificial satellite communication using a satellite, telephone communication such as a mobile phone, and wireless communication using a wireless device can be used. . However, when wireless communication is used as a communication means, the wireless communication distance is usually as short as several hundred meters. For this reason, in the case of a vehicle that freely travels over a wide work site such as a dump truck, for example, communication between the vehicle and the management station cannot always be secured wirelessly, and it is difficult to stably acquire vehicle information. It was.

  On the other hand, when cellular phone communication or artificial satellite communication is used as a communication means, the problem that transmission / reception between the vehicle and the management station due to a short communication distance, such as wireless communication, is prevented. However, mobile phone communication lines and satellite communication have a problem of high communication costs and inferior economy. In addition, in the case of mobile phone communication lines, when working at places such as mines where it is difficult to receive radio waves such as Iwain, the radio waves do not reach and communication with the management station becomes impossible. was there. Furthermore, in the case of satellite communication, the amount of information that can be transmitted is small, and enormous communication costs are required to sufficiently acquire information necessary for maintenance, etc., and as a result, the amount of information obtained at the management station is reduced. There were drawbacks.

  In response to the above problems, for example, Japanese Patent Application Laid-Open No. 2002-198887 (Patent Document 2) discloses a work machine that can communicate with a management station in accordance with a situation in which the work machine or the vehicle is working. A communication control method is disclosed. In the communication control method described in Patent Document 2, a plurality of different types of communication means are prepared in advance between the management station and the work machine or vehicle, and a communication line among the plurality of different types of communication means is prepared. Is selected, and communication is performed between the base station and the work machine or vehicle by the selected communication means.

In Patent Document 2, a plurality of communication lines including a specific low-power wireless communication line, a mobile phone communication line, and a satellite communication line are provided as communication means between the work machine and the management station. Of these multiple communication lines, try to establish a communication connection between the work machine and the management station one by one from the communication means with the lowest communication cost, and transmit data from the work machine using the communication means that secures communication. And request data from the management station. Therefore, it is said that optimization can be achieved in terms of both reliability and economic efficiency of communication between the work machine and the management station.
International Publication No. 01/071109 Pamphlet JP 2002-198887 A

  However, since Patent Document 2 includes a plurality of different types of communication means, there is a problem that the burden on the equipment cost is large and the communication device itself is complicated. In addition, when communication is performed between a vehicle that freely travels in a wide work site and a management station, communication using a wireless communication line is hardly available because the wireless communication range is narrow. For this reason, as a result, communication is performed using a mobile phone communication line or an artificial satellite communication line. Therefore, even if the communication control method as in Patent Document 2 is used when communicating between the vehicle and the management station, the problem of communication cost has not been fundamentally solved, and vehicle information can be stabilized at low cost. Development of a system that can be acquired in the future has been demanded.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide vehicle information of the vehicle easily and stably at a low cost even for a vehicle that freely travels over a wide work site. Another object of the present invention is to provide a vehicle information collection system and a vehicle information collection method that can be acquired and collected.

In order to achieve the above object, the vehicle information collection system of the present invention is within a range where wireless LAN can communicate with a plurality of vehicles traveling in an arbitrary direction at a limited work site such as a mine where there are many communication failures. A vehicle information collection system that collects vehicle information by performing transmission / reception with a terminal device disposed in a wireless LAN, wherein the terminal device is installed in the work site through which the plurality of vehicles pass in common . The at least one point area is covered, is located in a place where communication with the vehicle is possible in the covered area , and is movable to the vicinity of the vehicle where the vehicle information request is to be obtained. ID request transmission means for performing broadcast transmission for requesting a vehicle ID toward a vehicle in a predetermined cycle, and an information acquisition target vehicle that has received the responded vehicle ID A determination means for determining whether or not the vehicle has been requested to acquire; an information request transmission means for performing unicast transmission for requesting vehicle information to the vehicle determined as the information acquisition target vehicle by the determination means; Storage means for receiving and storing the responded vehicle information, and each of the plurality of vehicles has its own vehicle ID directed to the terminal device in response to a vehicle ID request from the terminal device. The ID transmission means for transmitting and the information transmission means for transmitting its own vehicle information to the terminal device in response to the vehicle information request from the terminal device are provided. It is a characteristic.

In such a vehicle information collection system of the present invention, the determination unit determines whether or not the vehicle ID received by the terminal device is a vehicle ID for which vehicle information has been acquired within a preset predetermined time. You need to do. Furthermore, in the present invention, the terminal device is not only arranged at a specific installation position but also movable to the vicinity of the vehicle for which vehicle information is desired to be acquired . Each of the plurality of vehicles preferably includes a vehicle-side storage unit that is set with the vehicle ID of the vehicle and that stores the vehicle information of the vehicle.

In addition, the vehicle information collection method of the present invention is a terminal arranged within a range where wireless LAN can communicate with a plurality of vehicles traveling in an arbitrary direction at a limited work site such as a mine. A vehicle information collecting method for collecting vehicle information by performing transmission / reception with a device via a wireless LAN, wherein at least one point region in the work site where the plurality of vehicles pass through the terminal device in common The terminal device can be moved to the vicinity of the vehicle from which the vehicle information is to be obtained, the cover from the terminal device to the cover. Broadcast transmission requesting a vehicle ID toward a vehicle in the area to be performed at a predetermined cycle, and the vehicle that has received the vehicle ID request transmits its own vehicle ID to the terminal device. Transmitting to the terminal, determining based on the vehicle ID received by the terminal device whether or not the received information acquisition target vehicle is a vehicle for which information acquisition has been obtained, and determining the information acquisition target Unicast transmission requesting vehicle information toward the vehicle identified as the vehicle, the vehicle receiving the vehicle information request transmits its vehicle information to the terminal device, and The most important feature is to receive and store the vehicle information.

  In such a vehicle information collecting method of the present invention, the vehicle ID received by the terminal device before the unicast transmission of the vehicle information request is the vehicle ID from which the vehicle information was acquired within a predetermined time. It is preferable to determine whether or not.

  According to the vehicle information collection system of the present invention, the terminal device that communicates with the vehicle is, for example, a point where a plurality of vehicles such as a fueling station, a pit where people get on and off, a meal, and a toilet pass without fail. It is arranged so as to cover at least one point area. By arranging the terminal device in this way, it is possible to make a state in which transmission / reception by a wireless LAN is possible between the terminal device and a vehicle passing through an area covered by the terminal device.

  In addition, the terminal device is provided with the ID request transmission unit, the determination unit, the information request transmission unit, and the storage unit as described above. On the other hand, each vehicle is provided with an ID transmission unit and an information transmission unit. As a result, when transmission / reception is performed between a vehicle that freely travels in a wide work site and a terminal device, even if a wireless LAN having a relatively narrow communication range is used as a communication means, the terminal device always passes through the vehicle. Since the area is covered, the vehicle information of the vehicle can be reliably acquired by the terminal device.

  That is, according to the present invention, vehicle information of a vehicle can be reliably acquired by performing communication between the vehicle and the terminal device by a wireless LAN capable of transmitting and receiving a large amount of data without incurring communication costs. For this reason, the vehicle information about the specific vehicle for which information acquisition is required can be sufficiently collected at a low cost as necessary. Moreover, for example, the vehicle information of each vehicle can be obtained from the terminal device at least once a day.

Moreover, according to the vehicle information collection method of the present invention, broadcast transmission requesting a vehicle ID is performed from a terminal device arranged so as to cover at least one point region among points through which a plurality of vehicles pass. Subsequently, transmission of the vehicle ID from the vehicle that has received the vehicle ID request, determination of the information acquisition target vehicle based on the vehicle ID received by the terminal device, and request vehicle information toward the vehicle determined as the information acquisition target vehicle Transmission / reception by a wireless LAN is performed between the terminal device and the vehicle in the order of unicast transmission, transmission of vehicle information from the vehicle that has received the vehicle information request, and storage of vehicle information received by the terminal device. By performing transmission and reception between the terminal device and the vehicle in this way, vehicle information of the vehicle for which information acquisition is required can be acquired and stored easily and stably at low cost.

  Further, in the present invention, before the unicast request for vehicle information is transmitted, the received vehicle ID is a vehicle ID obtained by acquiring vehicle information within a predetermined time set in advance by the determination means provided in the terminal device. It can be determined whether or not there is. Thus, by determining whether or not vehicle information is acquired within a predetermined time for the vehicle ID received by the terminal device, it is possible to prevent the vehicle information from being repeatedly acquired for the same vehicle within the predetermined time. Can be collected efficiently.

  Hereinafter, preferred embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments. Here, FIG. 1 is a schematic diagram schematically illustrating an example of a specific aspect of the vehicle information collection system according to the present embodiment. Moreover, FIG. 2 is a flowchart which shows the process sequence in a terminal device, and FIG. 3 is a flowchart which shows the process sequence in a vehicle. Furthermore, FIG. 4 is an explanatory diagram for explaining the flow of communication between the terminal device and the vehicle.

  First, the vehicle information collection system according to the present embodiment transmits and receives wireless LAN between a plurality of vehicles such as dump trucks traveling in a predetermined range and a terminal device and a terminal device in a wide work site such as a mine. This is a vehicle information collection system that can acquire vehicle information of a specific vehicle from a plurality of vehicles.

  In the vehicle information collection system of the present embodiment, the terminal device that transmits and receives to / from the vehicle is, for example, a fuel station where fuel is refueled, a pit where people get on and off, a cafeteria, and a toilet are all on a daily basis. The times are set so as to cover at least one point area among a plurality of points that will pass. By installing the terminal device so as to cover such a point area, the terminal device and a vehicle passing through the area covered by the terminal device can be in a state in which transmission and reception can be performed by a wireless LAN. .

  In the present embodiment, as another aspect, the terminal device may be installed in a vehicle that can be arbitrarily moved without being installed in a certain place and provided as a mobile base station. Further, for example, when the worker moves to a point where a plurality of vehicles pass with the terminal device, or near a specific vehicle where the worker wants to obtain information, the worker can A terminal device can also be arranged so that communication is possible.

  The terminal device is responded by an ID request transmitting means for performing broadcast transmission for requesting a vehicle ID at a predetermined cycle toward a vehicle that is in an area covered by the terminal device or traveling within the area covered by the terminal device. A determination unit that receives a vehicle ID and determines a vehicle for information acquisition; an information request transmission unit that performs unicast transmission for requesting vehicle information to the vehicle determined as the information acquisition target vehicle by the determination unit; Storage means for receiving and storing vehicle information returned from the vehicle is provided.

  As a specific example of this terminal device, for example, there is a terminal device 1 as shown in FIG. In the terminal device 1 shown in FIG. 1, an input device 6 and an output device 2 are connected to a main body 3 including a CPU 4, a memory 5, an auxiliary storage unit 9, and the like. In addition, a wireless module 7 and an antenna 8 are provided so that transmission / reception with the vehicle can be performed by wireless LAN.

  If it is the terminal device 1 which has such a structure, broadcast transmission which requests | requires vehicle ID can be performed with a predetermined period via the radio | wireless module 7 and the antenna 8, for example according to the command by CPU4. Further, the vehicle ID returned from the vehicle can be received and stored in the memory 5. Further, the CPU 4 determines whether or not the received vehicle ID is a vehicle ID for which information acquisition is requested by the worker. For example, by determining whether or not the vehicle ID has acquired vehicle information within a predetermined time set in advance in the memory 5, it is determined whether or not the vehicle having the vehicle ID is an information acquisition target vehicle. Can be determined.

  The terminal device 1 can perform unicast transmission for requesting vehicle information via the wireless module 7 and the antenna 8 to the vehicle determined to be the information acquisition target vehicle. Further, vehicle information responded from the vehicle can be received and stored in the auxiliary storage means 9.

  On the other hand, for each vehicle that performs transmission / reception with the terminal device by wireless LAN, an ID transmission unit that transmits its own vehicle ID to the terminal device in response to a vehicle ID request from the terminal device, and a vehicle from the terminal device Information transmitting means for transmitting own vehicle information to the terminal device in response to the information request is provided. Each of the vehicles has a vehicle-side storage unit in which the vehicle ID is set and the vehicle information is stored.

  As a specific example, as illustrated in FIG. 1, each vehicle 11 includes a CPU 13, a memory 14, and the like, and a controller 12 including a wireless module 15 and an antenna 16. By providing such a controller 12 in each vehicle, the controller 12 can receive a vehicle ID request or a vehicle information request transmitted from the terminal device 1 via the antenna 16 and the wireless module 15. Further, when the request from the terminal device 1 is received by each vehicle, the content of the request can be discriminated by the CPU 13 and the own vehicle ID or vehicle information can be transmitted to the terminal device wirelessly. Further, each vehicle 11 has its own vehicle ID set in advance in the memory 14 of the controller 12, and for example, its own vehicle such as operating time, engine rotation, hydraulic pressure, and error caution when a vehicle abnormality occurs. Information is stored.

Next, a vehicle information collection method for collecting specific vehicle information for which an operator requests information acquisition from a plurality of vehicles that freely travel in a wide work site such as a mine, using the vehicle information collection system described above. Will be explained.
In the present embodiment, the terminal device that performs vehicle and transmission and reception, the location where all of the plurality of vehicles as described above covers the one position point region from among a plurality of points which always passes through at least once a day The terminal device and the vehicle can transmit and receive each other within an area covered by the terminal device.

  First, as shown in the flowchart of the terminal device in FIG. 2, the worker sets the vehicle ID of the vehicle for which information is desired to be acquired in the terminal device installed at a predetermined location as described above (step S1). For example, in the case of the terminal device 1 having the configuration shown in FIG. 1, the worker inputs the vehicle ID of the vehicle whose information is to be collected from the input device 6 and gives a command to the terminal device 1 to acquire the vehicle information. . At this time, the worker can arbitrarily set a vehicle ID such as a vehicle that each worker is in charge of, or a vehicle that needs information acquisition on that day, as a vehicle that performs information acquisition in the terminal device. it can.

  On the other hand, in each vehicle 11 traveling on the work site, its own vehicle ID is set in advance in the memory 14 of the controller 12 and, for example, an error caution when an operation time, engine rotation, hydraulic pressure, or vehicle abnormality occurs is generated. The vehicle information such as the vehicle information is stored in the memory 14 while being periodically rewritten. Further, as shown in the flowchart of FIG. 3, the apparatus waits so that a request from the terminal device can be received at any time (step S11).

  Next, as shown in (1) of FIG. 2 and FIG. 4, the terminal device to which the information acquisition command is input from the operator is assigned a vehicle ID toward the vehicle in the area covered by the terminal device. The requested broadcast transmission is performed (step S2). At this time, broadcast transmission of the vehicle ID request by the terminal device is continuously performed in a predetermined cycle. Thereby, the vehicle in the reception waiting state can reliably receive the vehicle ID request from the terminal device when the vehicle is in the area covered by the terminal device or traveling in the area covered. it can.

  As shown in FIG. 3, the vehicle that has received the vehicle ID request from the terminal device first confirms that it has received the request from the terminal device (step S12), and the content of the request is a vehicle by broadcast transmission. It is determined whether it is an ID request or a vehicle information request by unicast transmission (step S13). And when the request | requirement from a terminal device is a vehicle ID request | requirement (step S14), as shown in (2) of FIG.3 and FIG.4, own vehicle ID is transmitted toward a terminal device from a vehicle ((2)). Step S15).

  The terminal device that performed the broadcast transmission of the vehicle ID request as described above waits in a state where the vehicle ID that is responded from the vehicle can be received at any time (step S3). And when vehicle ID responded from the vehicle is received, it can confirm that the vehicle which has the ID exists in the state which can communicate with a terminal device by wireless LAN.

  It is determined whether or not the vehicle ID received by the terminal device is present in the list of vehicle IDs set by the operator by the determining means of the terminal device (step S4). By making such a determination, even if there are a plurality of vehicles that can communicate with the terminal device, it is possible to specify only the vehicle for which information acquisition is requested by the worker.

  If the vehicle ID for which information acquisition is requested is specified from the received vehicle IDs by the determining means, then, for the vehicle ID specified by the determining means, the predetermined vehicle ID is set in advance. It is determined whether or not the vehicle ID has acquired vehicle information within the time (step S5). When the vehicle ID for which information acquisition is requested is confirmed by the determining means that the vehicle information has not been acquired within a predetermined time, the vehicle having the vehicle ID is determined as the information acquisition specific vehicle. Is done. Thereafter, vehicle information is requested from the terminal device to the vehicle identified as the information acquisition specific vehicle (step S6).

  In general, even if vehicle information is repeatedly acquired for a single vehicle within a short time, changes in vehicle information are rarely seen in a short time. Is done. Thus, if vehicle information having substantially the same content is frequently transmitted from the same vehicle in a short time, there is a risk of hindering work efficiency. Therefore, as in this embodiment, after it is confirmed that the vehicle ID received by the terminal device is in the list of vehicle IDs set by the operator by the determination unit, vehicle information is further acquired within a predetermined time. Make sure not. Accordingly, it is possible to prevent the vehicle information from being repeatedly acquired for the same vehicle within a predetermined time, and it is possible to efficiently collect the vehicle information of the vehicle for which information acquisition is required.

  On the other hand, if it is determined in step S4 that the vehicle ID received by the terminal device is not in the list of vehicle IDs set by the operator, or vehicle information is acquired within a predetermined time in step S5. If it is confirmed that the vehicle information has the vehicle ID, the vehicle information is not requested from the terminal device. Then, the terminal device receives the next vehicle ID (step S8), whether it is in the list of vehicle IDs set by the operator (step S4), as described above, and vehicle information within a predetermined time. Is determined (step S5).

  In addition, when determining the presence or absence of vehicle information acquisition within predetermined time about vehicle ID, the time used as the reference | standard is not specifically limited, The time which an operator can set can be changed suitably as needed. . For example, by setting the time to be set to 24 hours, vehicle information can be acquired once a day. In addition, it is not always necessary to determine whether or not vehicle information is acquired within a predetermined time for such a vehicle ID. For example, when it is desired to confirm a detailed change in vehicle information within a short time. Then it can be omitted.

  And it is confirmed by the discrimination means that the vehicle ID received by the terminal device is in the vehicle ID list set by the worker and vehicle information has not been acquired within a predetermined time, and a vehicle having the ID is When it is determined as the information acquisition target vehicle, as shown in FIG. 2 and FIG. 4 (3), unicast that requests vehicle information from the terminal device to the vehicle determined as the information acquisition target vehicle in step S6. Send.

  In the vehicle that has received the vehicle information request from the terminal device, it is determined that the content of the request from the terminal device is a vehicle information request by unicast transmission (step S16). Then, as shown in FIG. 3 and FIG. 4 (4), for example, the vehicle information stored in the memory 14 is transmitted from the vehicle to the terminal device (step S17). Thereafter, the terminal device receives the vehicle information responded from the vehicle and stores it in the storage means (step S7).

  The terminal device that has acquired the vehicle information of the specific vehicle obtained from the operator as described above further determines whether or not the next vehicle ID responding to the broadcast transmission is a vehicle information target vehicle as described above. The vehicle information is acquired for the vehicle determined as the vehicle information target vehicle. In step S8, when all the above operations are completed for the vehicle ID received by the terminal device, broadcast transmission requesting the vehicle ID from the terminal device to the vehicle is performed again.

  The operations from the above-described broadcast transmission requesting the vehicle ID by the terminal device to the storage of the vehicle information of the specific vehicle in the storage unit of the terminal device are repeatedly performed at a predetermined cycle.

  In this embodiment, the terminal device covers a point area through which a plurality of vehicles always pass, and is installed in a place where communication with the vehicle is possible. Therefore, by repeatedly performing the above work, it is possible to reliably perform transmission / reception by the wireless LAN between the vehicle and the terminal device from which the worker is seeking information acquisition. Therefore, according to the present embodiment, necessary vehicle information about the vehicle for which the operator has requested information acquisition can be automatically acquired by the terminal device.

  In addition, this embodiment can provide sufficient vehicle information about a vehicle for which an operator has requested information acquisition without using a conventional mobile phone communication line or artificial satellite communication line with a high communication cost. It can be reliably acquired by transmission / reception via a wireless LAN that is not applied. In particular, a large amount of information can be instantaneously communicated by performing transmission and reception between the vehicle and the terminal device via a wireless LAN. As a result, it is possible to collect detailed information on the vehicle, which has been difficult to obtain in the past due to cost, by the terminal device. Vehicle information can be obtained easily and stably at a low cost.

  In this embodiment, by collecting vehicle information with one terminal device installed at a predetermined location as described above, it becomes easy to create a database of vehicle information, and information management of a large number of vehicles is facilitated. It can also be done accurately. In addition, it becomes easy to collectively transfer information on a plurality of vehicles to another device (for example, a server). Furthermore, if information management of a large number of vehicles is performed by one terminal device in this way, for example, by displaying vehicle information of a plurality of vehicles on the output device of the terminal device, the operating statuses of the plurality of vehicles can be simply compared in real time. be able to. As a result, for example, it is possible to grasp the operation status such as the operation time of each vehicle, or to detect the vehicle abnormality early when the vehicle has an abnormality.

  In the above description, a case where one terminal device is installed so as to cover one point area among points through which a plurality of vehicles pass and collects vehicle information is mainly described. However, the present invention is not limited to this. For example, an operator moves to the vicinity of a specific vehicle that wants to acquire information together with the terminal device, and the vehicle and the terminal device are within the area covered by the terminal device. It is also possible to collect vehicle information by arranging a terminal device so as to be able to communicate. Moreover, if necessary, a plurality of terminal devices can be arranged so as to cover a plurality of point areas among points through which the vehicle always passes.

  The present invention can be effectively applied when collecting vehicle information of a vehicle such as a dump truck that freely travels in a large work site such as a mine.

FIG. 1 is a schematic diagram schematically illustrating an example of a specific aspect of the vehicle information collection system according to the present embodiment. FIG. 2 is a flowchart showing a processing procedure in the terminal device. FIG. 3 is a flowchart showing a processing procedure in the vehicle. FIG. 4 is an explanatory diagram illustrating the flow of communication between the terminal device and the vehicle.

Explanation of symbols

1 Terminal Device 2 Output Device 3 Body 4 CPU
DESCRIPTION OF SYMBOLS 5 Memory 6 Input device 7 Wireless module 8 Antenna 9 Auxiliary storage means 11 Vehicle 12 Controller 13 CPU
14 memory 15 wireless module 16 antenna

Claims (5)

Wireless LAN transmission / reception is performed between a plurality of vehicles traveling in an arbitrary direction at a limited work site such as a mine where there are many communication failures and terminal devices arranged within a range where wireless LAN communication is possible. Vehicle information collecting system for collecting vehicle information by
The terminal device
Covering at least one point area in the work site through which the plurality of vehicles pass in common , and being arranged in a place where communication with the vehicle is possible within the covered area , and obtaining a vehicle information request Move to the vicinity of the vehicle,
An ID request transmitting means for performing broadcast transmission for requesting a vehicle ID toward a vehicle in the area to be covered at a predetermined cycle, and a vehicle for which information acquisition target vehicle that has received the responded vehicle ID has requested information acquisition A determination means for determining whether or not there is an information request transmission means for performing unicast transmission for requesting vehicle information to a vehicle determined as an information acquisition target vehicle by the determination means; Storage means for receiving and storing,
In each of the plurality of vehicles,
ID transmitting means for transmitting the vehicle ID to the terminal device in response to the vehicle ID request from the terminal device; and directing the vehicle information to the terminal device in response to the vehicle information request from the terminal device. And an information transmitting means for transmitting
A vehicle information collection system characterized by that. The vehicle information collection according to claim 1 , wherein the determination unit determines whether or not the vehicle ID received by the terminal device is a vehicle ID for which vehicle information has been acquired within a predetermined time set in advance. system. 3. The vehicle information collection system according to claim 1 , wherein each of the plurality of vehicles includes a vehicle-side storage unit in which the vehicle ID of the vehicle is set and the vehicle information of the vehicle is stored. Wireless LAN transmission / reception is performed between a plurality of vehicles traveling in an arbitrary direction at a limited work site such as a mine where there are many communication failures and terminal devices arranged within a range where wireless LAN communication is possible. Vehicle information collecting method for collecting vehicle information by
Covering at least one point area in the work site through which the plurality of vehicles pass in common through the terminal device, and disposing in a place where communication with the vehicle is possible in the covered area;
Enabling the terminal device to be moved in the vicinity of a vehicle for which a vehicle information request is to be obtained;
Performing broadcast transmission for requesting a vehicle ID from the terminal device to a vehicle in the area to be covered at a predetermined period;
The vehicle that has received the vehicle ID request transmits its vehicle ID to the terminal device;
Based on the vehicle ID received by the terminal device, the determination unit determines whether the received information acquisition target vehicle is a vehicle for which information acquisition has been requested,
Performing unicast transmission requesting vehicle information toward the vehicle identified as the information acquisition target vehicle,
The vehicle that has received the vehicle information request transmits its vehicle information to the terminal device, and
Receiving and storing the vehicle information;
The vehicle information collection method characterized by comprising. Before the unicast transmission of the vehicle information request, the vehicle ID received by the terminal device includes determining whether or not the vehicle ID has been acquired within a predetermined time. The vehicle information collection method according to claim 4 , comprising:

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