JP6460688B2 - Operation management system - Google Patents

Description

  The present invention relates to an operation management system.

  2. Description of the Related Art Conventionally, an operation management system for managing an operation state related to a business vehicle is known. For example, Patent Document 1 below discloses a technique in which a vehicle dispatching center that has received a vehicle pickup request transmits the vehicle pickup request information to a taxi vehicle (taximeter) via the Internet. Patent Document 2 below has the same management number for the same content between the data tables of the in-vehicle device and the center, and when the search result in the center is transferred to the in-vehicle device, the content management number Is transmitted, and detailed information is transmitted only for contents not recorded in the data table of the vehicle-mounted device.

JP 2012-243187 A JP 2008-128799 A

  Incidentally, in recent years, the amount of information transmitted / received to / from an in-vehicle device has increased due to diversification and advancement of functions of the in-vehicle device. For this reason, as for information to be transmitted / received, a case of transmitting / receiving a large amount of data and a case of transmitting / receiving a small amount of data are mixed. Therefore, conventionally, it is necessary to prepare a communication system capable of transmitting and receiving a large amount of data. However, such a communication system is not efficient because it has excessive communication performance when transmitting and receiving information with a small amount of data.

  Therefore, an object of the present invention is to provide an operation management system capable of efficiently transmitting and receiving information.

To achieve the above object, the present invention is characterized by the following.

The present invention is capable of transmitting and receiving data between a center side terminal installed in a center, an in-vehicle device mounted on a vehicle, and the center side terminal and the in-vehicle device, and capable of transmitting and receiving a predetermined amount. The first communication system, which is the upper limit value of the data amount, is capable of transmitting / receiving data between the center side terminal and the in-vehicle device, and is capable of transmitting / receiving data having a data amount larger than the predetermined amount. The second communication system is a high-cost communication system that has a relatively high communication cost for transmission of data related to transmission information, and a communication system that has a relatively low communication cost. A low-cost communication system capable of transmitting and receiving data between the center-side terminal and the in-vehicle device with an access point as a base point, and a control device for the center-side terminal and the When the data amount of the data related to the transmission information is equal to or less than the predetermined amount, the on-board control device allocates the first communication system as an information transmission path, and the data amount of the data related to the transmission information sets the predetermined amount to the predetermined amount. If it exceeds, the second communication system is assigned as an information transmission path, and the control device of the center side terminal and the control device of the in-vehicle device have the second communication system assigned as an information transmission path, The low-cost communication system in the second communication system is preferentially assigned to the information transmission path over the high-cost communication system in the second communication system, and the control device for the center-side terminal and the control device for the in-vehicle device are A second communication system is assigned as an information transmission path, and the in-vehicle device communicates with the access point. When the vehicle speed of the vehicle exceeds a predetermined vehicle speed for determining that there is a possibility of deviating from the effective range, the high-cost communication system in the second communication system is assigned as an information transmission path, and the first When the two communication systems are assigned as the information transmission path and the vehicle speed of the vehicle is equal to or lower than the predetermined vehicle speed, the low-cost communication system in the second communication system is assigned as the information transmission path. Wherein each of said control device, when the first communication system can be allocated as information transmission path is a plurality of types provided, among the plurality several first communication system, before Symbol communications costs relative the communication system small, it is desirable that assign priority on the information transmission path than the communication cost is relatively large communication system.

Further, the present invention is capable of transmitting and receiving data between a center side terminal installed in a center, an in-vehicle device mounted on a vehicle, and the center side terminal and the in-vehicle device. The first communication system, which is the upper limit of the possible data amount, can transmit and receive data between the center side terminal and the in-vehicle device, and can transmit and receive data having a data amount larger than the predetermined amount The second communication system includes a high-cost communication system having a relatively high communication cost for transmitting data related to transmission information, and a communication system having a relatively low communication cost. A low-cost communication system capable of transmitting and receiving data between the center-side terminal and the in-vehicle device with the access point as a base point, and a control device for the center-side terminal and When the data amount of the data related to the transmission information is equal to or less than the predetermined amount, the control device of the in-vehicle device allocates the first communication system as an information transmission path, and the data amount of the data related to the transmission information is the predetermined amount When the second communication system is assigned as an information transmission path, the control device of the center side terminal and the control device of the in-vehicle device are assigned when the second communication system is assigned as an information transmission path. The low-cost communication system in the second communication system is assigned when the low-cost communication system in the second communication system is assigned as an information transmission path and data transmission cannot be completed in the assigned low-cost communication system. To the information transmission path, the control device of the center side terminal and the control device of the in-vehicle device The vehicle speed of the vehicle is a predetermined vehicle speed for determining that there is a possibility that the second communication system is assigned as an information transmission path and the in-vehicle device is out of the communication range of the access point. If it exceeds, the high-cost communication system in the second communication system is assigned as an information transmission route, the second communication system is assigned as an information transmission route, and the vehicle speed is less than or equal to the predetermined vehicle speed In this case, the low-cost communication system in the second communication system is assigned as an information transmission path. Wherein each of said control device, when the first communication system can be allocated as information transmission path is a plurality of types provided, among the plurality several first communication system, before Symbol communications costs relative allocate less communication system as an information transmission path, when the transmission of data in the allocated communication system can not be completed, it is preferable assign abuts the communication cost is relatively large communications system the information transmission path .

  In addition, when each of the control devices gives identification information to the data at the time of transmission of the data, a plurality of duplicate data to which the same identification information is given exists in the received data In order to leave only one of the plurality of duplicate data, it is desirable to discard the surplus data.

  Further, each of the control devices divides the data into a plurality of data when the data amount of the data related to the transmission information exceeds a second predetermined amount larger than the predetermined amount, and divides and identifies each divided data. It is desirable to combine the plurality of pieces of divided data based on the division identification information when information is added and transmitted and a plurality of pieces of the divided data are received.

  The transmission information is preferably vehicle operation information.

  The operation management system which concerns on this invention can select the communication system used as an information transmission path | route according to the data amount of transmission information from several communication systems. For this reason, in this operation management system, the data transmission / reception of the efficient transmission information according to the data amount is attained.

Drawing 1 is a figure shown about the composition of the operation management system of an embodiment. FIG. 2 is a diagram illustrating a usable communication system. FIG. 3 is a flowchart for explaining the arithmetic processing at the time of data transmission. FIG. 4 is a flowchart for explaining the arithmetic processing at the time of data reception.

  Embodiments of an operation management system according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

[Embodiment]
One embodiment of the operation management system according to the present invention will be described with reference to FIGS.

  The operation management system of this embodiment is a system that is mainly used by operators who use vehicles such as taxi operators and courier operators for services, and facilities on the vehicle management side such as offices, offices, and branches. The operation status of the vehicle is managed by exchanging information (hereinafter referred to as “operation information”) between the vehicle (hereinafter referred to as “center”) and the in-vehicle device mounted on the vehicle.

  First, some application examples of this operation management system will be exemplified.

  For example, this operation management system can be used for taxi dispatch. In this case, the vehicle-mounted device transmits its own vehicle position information as operation information to the center constantly or periodically or by a driver's operation. Thereby, in the center, the position of each vehicle can be grasped. For this reason, in the center, when an incoming request is received from a user, a vehicle in the vicinity of the incoming position can be selected automatically or by an operator on the manager side. Then, from the center, dispatch information corresponding to the pick-up request (the pick-up position, the name of the user, etc.) is transmitted automatically or the operator on the manager side to the corresponding vehicle. The dispatch information as the operation information is received by the in-vehicle device of the corresponding vehicle and displayed on a display unit such as a monitor. The driver of the vehicle goes to the pick-up position based on the dispatch information. Thus, this exemplary operation management system can efficiently allocate taxis.

  The operation management system can be used for managing taxi operation history (travel route, travel time, sales, etc.). In this case, the in-vehicle device transmits operation history information as operation information to the center by a driver's operation. In the center, based on the received operation history information, the driver's labor management, health management, sales management, and the like can be performed. On the other hand, the driver of the vehicle can create a business diary or the like based on the operation history information sent to the center.

  The operation management system can be used for redelivery and collection of luggage. In this case, when the center receives a redelivery request or a collection request from the customer, the redelivery request information (customer name and address, desired redelivery time, etc.) or collection request information (customer request information) as operation information is received. Name, address, desired collection time, etc.) are sent to the vehicle in charge by the operator's operation. The in-vehicle device of the vehicle in charge displays the redelivery request information or the collection request information on the display unit. Based on the redelivery request information or the collection request information, the driver redelivery or collects the package.

  Moreover, this operation management system can be used for checking the status of the cargo compartment of the cargo vehicle. In this case, the in-vehicle device transmits image information and moving image information obtained by photographing the cargo room to the center. In the center, it is possible to confirm the status of the luggage in the cargo room based on image information or the like as the operation information.

  Next, the operation management system of this embodiment will be specifically described. The code | symbol 1 of FIG. 1 shows the operation management system of this embodiment.

  The operation management system 1 includes an electronic computer (hereinafter referred to as a “center-side terminal”) 10 installed in a center and an in-vehicle device 20 mounted on a vehicle.

  The center side terminal 10 includes a control device 11, an operation unit 12, a display unit 13, and a storage unit 14.

  The control device 11 includes a CPU, a ROM, a RAM, and the like. The control device 11 executes arithmetic processing based on at least the program of the present system. The operation unit 12 is a device for inputting at least commands and the like in this system. The operation unit 12 is operated by a center operator. The display unit 13 is a device for displaying at least a calculation result of the CPU. The memory | storage part 14 is an apparatus which memorize | stores the arithmetic processing result (operation information etc.) of CPU at least.

  The in-vehicle device 20 includes a control device 21, an operation unit 22, and a display unit 23.

  The control device 21 includes a CPU, ROM, RAM, and the like. The control device 21 executes arithmetic processing based on at least the program of the present system. The operation unit 22 is a device for inputting at least commands and the like in this system. The operation unit 22 is operated by an operator (mainly a driver) boarding the vehicle. The display unit 23 is a device for displaying at least the CPU processing result and the like.

  Furthermore, the in-vehicle device 20 includes an operation history storage unit 24 and a reception data storage unit 25.

  The operation history storage unit 24 is a device for storing operation history information of a vehicle or a storage region for operation history in a storage device. For example, taxi operation history information is the travel route information described above. In addition, the operation history information of the cargo vehicle includes travel route information, travel time information, delivery information and collection information on the luggage in the cargo compartment, and the like. The received data storage unit 25 is a device for storing information sent from the center terminal 10 or a storage area for the information in the storage device.

  Furthermore, the in-vehicle device 20 includes a drive device 26. The drive device 26 is a device that writes information to a portable storage medium (so-called removable media) and reads information from the portable storage medium. For example, the operation history information is stored in the portable storage medium by the operation of the operation unit 22 of the operator.

  In addition, a vehicle speed sensor 31 and a host vehicle position detection device 32 are connected to the illustrated in-vehicle device 20. The vehicle speed sensor 31 is a device that detects the traveling speed of the vehicle. The vehicle speed sensor 31 may be newly provided for the in-vehicle device 20, but a vehicle speed sensor already mounted on the vehicle may be used. The own vehicle position detection device 32 is a device that detects the position of the own vehicle. The vehicle position detection device 32 may use a so-called GPS (Global Positioning System). The own vehicle position detection device 32 may be newly provided for the in-vehicle device 20, but a device already installed in the vehicle (for example, a GPS of a car navigation system) may be used. Information on the detected vehicle traveling speed and vehicle position is transmitted to the control device 21.

  Here, in communication systems, there are a large amount and a small amount of data that can be transmitted per unit time (hereinafter referred to as “data amount that can be transmitted”). For this reason, in this operation management system 1, data transmission / reception between the center-side terminal 10 and the vehicle-mounted device 20 is performed using a plurality of communication systems. Among the plurality of communication systems, one used for transmission / reception of data having a data amount Vd equal to or smaller than a predetermined amount Vd0 (hereinafter referred to as “first communication system”) and a data amount Vd larger than the predetermined amount Vd0. There is at least one that can also be used for data transmission / reception (hereinafter referred to as “second communication system”). In other words, the first communication system is a communication system in which the predetermined amount Vd0 is the upper limit value of the data amount Vd that can be transmitted and received (that is, transmission can be completed within the predetermined time t0). The predetermined time t0 is, for example, a time corresponding to a communication timeout set in advance, and the transmission start time is a starting point.

  When information is transmitted from the center side terminal 10 to the vehicle-mounted device 20, the control device 11 of the center side terminal 10 performs transmission processing of data related to the information. When information is transmitted from the in-vehicle device 20 to the center-side terminal 10, the control device 21 of the in-vehicle device 20 performs transmission processing of data related to the information. When the data amount Vd of the information to be transmitted (hereinafter referred to as “transmission information”) is equal to or less than the predetermined amount Vd0, the control device 11 (21) allocates the first communication system as the information transmission path, and When the data amount Vd exceeds the predetermined amount Vd0, the second communication system is assigned as the information transmission path.

  By the way, in the conventional operation management system, for example, a wide-area mobile communication system (such as a third generation mobile communication system) is used for information transmission / reception, so communication costs are required for the information transmission / reception. In general, the payment method of communication costs of a mobile communication system is divided into a flat-rate system and a pay-per-use system. However, for business use, a pay-as-you-go system is adopted. In recent years, the data amount of information transmitted to and received from the in-vehicle device has increased due to diversification and advancement of functions of the in-vehicle device. For this reason, in the conventional operation management system, communication costs may increase. Even if the flat rate system can be used, in a mobile communication system, if the amount of information transmitted and received exceeds a predetermined amount, communication costs are often added to the excess data amount. Therefore, after all, in this conventional operation management system, there is a possibility that communication costs increase.

  Therefore, when a plurality of types of first communication systems that can be assigned as information transmission paths are prepared (when a plurality of types of communication systems corresponding to the first communication system are prepared), the control device 11 (21) Among a plurality of types of first communication systems, a communication system (hereinafter also referred to as a “low-cost communication system”) that has a relatively low communication cost for transmitting data related to transmission information is used to transmit data related to transmission information. Is assigned to an information transmission path with higher priority than a communication system (hereinafter also referred to as “high-cost communication system”) that has a relatively high communication cost (ie, a communication cost higher than that of a low-cost communication system). Similarly, when a plurality of types of second communication systems that can be assigned as information transmission paths are prepared (when a plurality of types of communication systems corresponding to the second communication system are prepared), the control device 11 ( 21) A communication system (low-cost communication system) having a relatively low communication cost for transmission of data related to transmission information among the plurality of types of second communication systems is related to transmission of data related to transmission information. The information transmission path is preferentially assigned to a communication system with a relatively high communication cost (high cost communication system). When the low-cost communication system cannot exchange data (that is, communication is impossible) between them, the high-cost communication system is assigned to the information transmission path. That is, the control device 11 (21) first assigns a low-cost communication system as an information transmission path, and assigns a high-cost communication system when data transmission cannot be completed by this low-cost communication system. Therefore, the operation management system 1 of this embodiment can suppress the communication cost at the time of data transmission. The cases where communication is impossible include cases where data cannot be transmitted / received due to radio wave directivity problems, or where the in-vehicle device 20 does not exist in an area (communication area) where data can be transferred. is there.

  In the following, a communication system that does not incur communication costs for transmission of transmission information data is given as an example of a low-cost communication system, and a communication system that incurs communication costs each time transmission information data is transmitted is a high-cost communication system. Take as an example.

  The communication system provided in this exemplary operation management system 1 is as follows.

  The operation management system 1 includes a radio system 40, a wireless LAN (Wireless Local Area Network) 50, and a mobile communication system 60. The radio system 40 corresponds to the first communication system and the low-cost communication system. The wireless LAN 50 corresponds to the second communication system and the low-cost communication system. The mobile communication system 60 corresponds to the second communication system and the high-cost communication system.

  The radio system 40 is a radio communication system that has been conventionally mounted in taxis and the like. The wireless device system 40 includes a transmission / reception unit 41 provided in the center-side terminal 10 and a transmission / reception unit 42 provided in the in-vehicle device 20. The transmission / reception unit 41 is connected to the control device 11 and transmits and receives information. The transmission / reception unit 42 is connected to the control device 21 and transmits and receives information. This wireless device system 40 has a wider communicable range than the wireless LAN 50, but has a smaller amount of data that can be transmitted than the wireless LAN 50 and the mobile communication system 60.

  The wireless LAN 50 is a wireless communication system that includes a transmission / reception unit 51 provided in the center-side terminal 10 and a transmission / reception unit 52 provided in the in-vehicle device 20 and performs transmission / reception of information between terminals based on the access point 53. The transmission / reception unit 51 is connected to the control device 11 and transmits and receives information. The transmission / reception unit 52 is connected to the control device 21 and transmits and receives information. This wireless LAN 50 has a narrower communication range than the wireless device system 40 and the mobile communication system 60, but has a larger amount of data that can be transmitted than the wireless device system 40.

  The mobile communication system 60 is a wide-area wireless communication system such as a third generation mobile communication system (so-called 3G) or a fourth generation mobile communication system (so-called 4G). The mobile communication system 60 includes a transmission / reception unit 61 provided in the center terminal 10 and a transmission / reception unit 62 provided in the in-vehicle device 20, and transmits / receives information between terminals via an IP (Internet Protocol) network 63. A wireless communication system. This mobile communication system 60 has a wider communicable range than the wireless LAN 50 and a larger amount of data that can be transmitted than the wireless system 40. However, the mobile communication system 60 incurs communication costs each time information is transmitted.

  FIG. 2 shows which of the three communication systems can be used based on the amount of data related to transmission information and whether data transmission is possible in each communication system. Is. FIG. 2 also shows information transmission path allocation priorities when a plurality of communication systems can be used. The case where data transmission is possible in the figure refers to the case where data transmission is completed within a predetermined time t0 from the start of transmission. On the other hand, the case where data transmission is impossible in the figure refers to a case where it is known that data transmission / reception cannot be performed due to a communication failure or the like before data transmission is started.

  In addition, the data amount shown below is small (small data amount) indicates that transmission is possible even with the radio system 40 having the smallest amount of data that can be transmitted. Also, a large amount of data (a large amount of data) means that transmission by the radio system 40 is impossible (including a case where transmission is practically impossible because it takes time to complete transmission). However, it indicates that transmission via the wireless LAN 50 or the mobile communication system 60 is possible.

  When the amount of data is small and data transmission is possible in all communication systems, the communication system can use all of them. In this case, the wireless system 40 and the wireless LAN 50 have a higher priority as an information transmission path than the mobile communication system 60 that has a high communication cost. In this case, since the data amount is small, the priority order of the wireless system 40 is higher than that of the wireless LAN 50. That is, in this case, the priority order as the information transmission path increases in the order of the mobile communication system 60, the wireless LAN 50, and the wireless device system 40. For this reason, the control device 11 (21) assigns the radio system 40 to the information transmission path, and when data transmission becomes impossible during data transmission in the radio system 40, the radio LAN 50 transmits information. Assign to a route. When the data transmission becomes impossible during the data transmission on the wireless LAN 50, the control device 11 (21) assigns the mobile communication system 60 to the information transmission path. When the data transmission becomes impossible during the data transmission in the mobile communication system 60, the control device 11 (21) determines that the data transmission has failed. The case where data transmission becomes impossible during data transmission refers to a case where a communication failure such as a decrease in radio wave reception sensitivity occurs during data transmission. In the case of the wireless LAN 50, the case where the in-vehicle device 20 is out of the communication range of the access point 53 is also applicable.

  When the amount of data is small and data transmission is impossible only by the mobile communication system 60, the communication system can use the radio system 40 and the wireless LAN 50. In this case, the priority order of the wireless device system 40 is higher than that of the wireless LAN 50. For this reason, the control device 11 (21) assigns the radio system 40 to the information transmission path, and when data transmission becomes impossible during data transmission in the radio system 40, the radio LAN 50 transmits information. Assign to a route. The control device 11 (21) determines that the data transmission has failed when the data transmission becomes impossible during the data transmission in the wireless LAN 50.

  When the amount of data is small and data transmission is impossible only by the wireless LAN 50, the radio system 40 and the mobile communication system 60 can be used. This case mainly corresponds to the case where the in-vehicle device 20 does not exist within the communicable range of the access point 53. In this case, the control device 11 (21) preferentially assigns the radio system 40 to the information transmission path. If the data transmission becomes impossible during the data transmission in the radio system 40, the control device 11 (21) assigns the mobile communication system 60 to the information transmission path. When the data transmission becomes impossible during the data transmission in the mobile communication system 60, the control device 11 (21) determines that the data transmission has failed.

  When the amount of data is small and only the radio system 40 can transmit data, the radio system 40 can be used as a communication system. In this case, the control device 11 (21) assigns the radio system 40 to the information transmission path. Then, the control device 11 (21) determines that the data transmission has failed if the data transmission becomes impossible during the data transmission in the radio system 40.

  Regardless of the amount of data, when data transmission is impossible only by the radio system 40, the radio LAN 50 and the mobile communication system 60 can be used. In this case, the control device 11 (21) preferentially assigns the wireless LAN 50 to the information transmission path. When the data transmission becomes impossible during the data transmission on the wireless LAN 50, the control device 11 (21) assigns the mobile communication system 60 to the information transmission path. When the data transmission becomes impossible during the data transmission in the mobile communication system 60, the control device 11 (21) determines that the data transmission has failed.

  When data can be transmitted only by the wireless LAN 50 regardless of the data amount, the communication system can use the wireless LAN 50. In this case, the control device 11 (21) assigns the wireless LAN 50 to the information transmission path. When the data transmission becomes impossible during the data transmission on the wireless LAN 50, the control device 11 (21) determines that the data transmission has failed.

  When only the mobile communication system 60 can transmit data regardless of the amount of data, the mobile communication system 60 can be used. In this case, the control device 11 (21) assigns the mobile communication system 60 to the information transmission path. If the data transmission becomes impossible during the data transmission in the mobile communication system 60, the control device 11 (21) determines that the data transmission has failed.

  Regardless of the amount of data, when data transmission is impossible in all communication systems, there is no communication system that can be used. In this case, the control device 11 (21) prohibits communication (data transmission).

  Below, an example of the arithmetic processing of the control apparatus 11 (21) is demonstrated based on the flowchart of FIG. The operator of the center (vehicle) operates the operation unit 12 (22) to execute a data transmission command of the transmission information to the vehicle (center) (step ST1).

  The control device 11 (21) gives identification information to data related to the transmission information (step ST2). The identification information includes at least date and time information.

  The control device 11 (21) determines whether or not the data amount Vd of the data related to the transmission information is equal to or less than a predetermined amount Vd0 (step ST3). The predetermined amount Vd0 is an upper limit value of the data amount Vd that allows the radio system 40 to complete data transmission within a predetermined time t0.

  When the data amount Vd is equal to or less than the predetermined amount Vd0, the control device 11 (21) assigns the radio system 40 to the information transmission path, and transmits data related to transmission information from the transceiver unit 41 (42) of the radio system 40. Is started (step ST4).

  The control device 11 (21) determines whether or not the data transmission in the radio system 40 is completed within the predetermined time t0 (step ST5). The completion of the data transmission can be determined, for example, by receiving reception completion information within a predetermined time t0 from the transmission destination control device 21 (11). The predetermined time t0 may be an eigenvalue set for the radio system 40, or may be a variable value that varies depending on the data amount Vd of transmission information.

  When the data transmission is completed within the predetermined time t0, the control device 11 (21) ends the data transmission process related to the transmission information.

  On the other hand, if the control device 11 (21) determines in step ST3 that the data amount Vd exceeds the predetermined amount Vd0, the data amount Vd further increases the predetermined amount (second predetermined amount) Vd1 (> Vd0). It is determined whether or not it exceeds (step ST6). This determination is for determining whether or not the data related to the transmission information should be divided and transmitted. For example, when the data amount Vd is large enough to congest the traffic of the wireless LAN 50 or the mobile communication system 60, the data is divided so that the congestion is reduced.

  When the data amount Vd exceeds the predetermined amount Vd1, the control device 11 (21) divides the data related to the transmission information into a plurality of pieces (step ST7). When the data is divided, division identification information is assigned to each piece of divided data. The division identification information is used when combining the divided data. The data division may be performed in advance by an instruction from the operation unit 12 (22) of the operator. In contrast, if the data amount Vd does not exceed the predetermined amount Vd1, the control device 11 (21) proceeds to step ST8 without dividing the data.

  The control device 11 (21) determines whether or not the transmission / reception unit 51 (52) of the wireless LAN 50 is within the communicable range of the access point (AP) 53 (step ST8). This determination is also executed when it is determined in step ST5 that the data transmission in the radio system 40 has not been completed within the predetermined time t0. This determination is performed by a well-known method in this technical field. For example, the control device 21 determines based on the detected own vehicle position. Further, when the detected vehicle speed exceeds the predetermined vehicle speed, the control device 21 determines that the in-vehicle device 20 of the own vehicle may be out of the communicable range of the access point (AP) 53, Even if the in-vehicle device 20 exists within the communicable range of the access point (AP) 53, it is desirable to determine that the on-vehicle device 20 does not exist within the communicable range. This is because there is a possibility of switching from the wireless LAN 50 to the mobile communication system 60 during data transmission. Therefore, in order to avoid the generation of duplicate data at the transmission destination, it is preferable to perform data transmission from the beginning in the mobile communication system 60. Because it is efficient.

  When the transmission / reception unit 51 (52) is within the communicable range of the access point 53, the control device 11 (21) allocates the wireless LAN 50 to the information transmission path, and the transmission / reception unit 51 (52) of the wireless LAN 50 ) Starts data transmission related to transmission information (step ST9). When the data is divided at step ST7, the respective divided data are transmitted. For example, the control device 11 (21) transmits a plurality of pieces of divided data one by one. The control device 11 (21) starts transmission of the next divided data after receiving the reception completion information regarding one divided data from the transmission destination.

  The control device 11 (21) determines whether or not the data transmission over the wireless LAN 50 is completed within the predetermined time t0 (step ST10). Here, the same predetermined time t0 as in step ST5 is used, but another time may be set for the predetermined time used in this determination. When the divided data is transmitted, it is determined whether transmission of all related divided data is completed within the predetermined time t0.

  When the data transmission by the wireless LAN 50 is completed within the predetermined time t0, the control device 11 (21) ends the data transmission process related to this transmission information. In the case of divided data, when the transmission of all related divided data is completed within the predetermined time t0, the data transmission process related to this transmission information is terminated.

  When the data transmission by the wireless LAN 50 is not completed within the predetermined time t0 (if it is divided data, the control device 11 (21) has not completed transmission of all related divided data within the predetermined time t0). Alternatively, when the transmission / reception unit 51 (52) does not exist within the communicable range of the access point 53, the mobile communication system 60 is assigned to the information transmission path, and the transmission / reception unit 61 (62) of the mobile communication system 60 Starts data transmission related to transmission information (step ST11). In the case of divided data, all related divided data are transmitted as described in step ST9.

  The control device 11 (21) determines whether or not the data transmission in the mobile communication system 60 is completed within the predetermined time t0 (step ST12). Here, the same predetermined time t0 as in step ST5 is used, but another time may be set for the predetermined time used in this determination. When the divided data is transmitted, it is determined whether transmission of all related divided data is completed within the predetermined time t0.

  When the data transmission by the mobile communication system 60 is completed within the predetermined time t0, the control device 11 (21) ends the data transmission process related to this transmission information. In the case of divided data, when the transmission of all related divided data is completed within the predetermined time t0, the data transmission process related to this transmission information is terminated.

  On the other hand, if the data transmission by the mobile communication system 60 is not completed within the predetermined time t0 (if it is divided data, the control device 11 (21) completes transmission of all related divided data within the predetermined time t0). If not, it is determined that data transmission related to this transmission information has failed (step ST13). For example, when this determination is performed, the determination result may be displayed on the display unit 13 (23), and the operator may be prompted to execute the data transmission command again. The display is desirably performed, for example, when the arithmetic processing after step ST3 is performed a plurality of times and it is still determined that the data transmission has failed.

  As described above, the operation management system 1 can select a communication system as an information transmission path according to the data amount Vd of transmission information from a plurality of communication systems. For this reason, the data amount Vd is increasing due to the diversification and sophistication of functions of the in-vehicle device 20 in recent years. In the operation management system 1, data of efficient transmission information corresponding to the data amount Vd is obtained. Transmission and reception are possible. Further, when selecting the communication system, the operation management system 1 first selects from low-cost communication systems (radio system 40, wireless LAN 50) that do not require communication costs at the time of data transmission. When data transmission cannot be completed by the system, a high-cost communication system (mobile communication system 60) is selected that requires communication costs for data transmission. Therefore, the operation management system 1 can efficiently transmit and receive data while suppressing communication costs during data transmission.

  In the illustration of FIG. 3, the control device 11 (21) selects a communication system as an information transmission path together with the operator's data transmission command. However, in this operation management system 1, a communication system serving as an information transmission path may be selected by an operation of the operation unit 12 (22) of the operator.

  So far, the calculation process of the control apparatus 11 (21) when transmitting transmission information has been described. In the following, calculation processing of the control device 11 (21) when receiving the transmission information will be described based on the flowchart of FIG.

  The control device 11 (21) starts receiving data related to transmission information transmitted from the vehicle side (center side) (step ST21). The reception of data may be started automatically when transmission information is transmitted from the vehicle side (center side), or started when the operator operates the operation unit 12 (22). It may be.

  The control device 11 (21) determines whether or not the data reception has been completed (step ST22). In the case of divided data, it is determined whether reception of all related divided data has been completed. Here, when data reception has not been completed, for example, when the time required for completion of reception has not yet elapsed, or when data reception has failed during reception due to a communication failure, etc. I mean.

  If the data reception has not been completed, the control device 11 (21) determines whether the data reception has failed (step ST23). For example, if the data being received is interrupted, it is determined that reception has failed.

  If the data reception has not failed, the control device 11 (21) returns to step ST22. On the other hand, if the data reception fails, the control device 11 (21) ends the arithmetic processing related to the data reception.

  When it is determined in step ST22 that the reception of data has been completed, the control device 11 (21) determines whether or not a plurality of duplicate data to which the same identification information is assigned exists in the received data. (Step ST24). In the case of divided data, the presence or absence of duplicate data is determined based on the division identification information. For example, even when it is determined in step ST5 or step ST10 that data transmission has not been completed, data reception may be completed at the transmission destination. In such a case, since the same data is transmitted in the next selected communication system, the data is duplicated. In the case of divided data, when it is determined in step ST5 or step ST10 that data transmission has not been completed, all the divided data are again used in the next selected communication system in order to avoid missing divided data. Start sending. For this reason, when a communication system is changed at the time of transmission of divided data, there is a possibility that overlapping divided data exists.

  When duplicate data exists, the control device 11 (21) discards surplus data so as to leave only one of the plurality of duplicate data (step ST25). For example, the control device 11 (21) leaves the data that has been received for the first time among the duplicate data, and discards the remaining data.

  The control device 11 (21) determines whether or not the received data is divided data after discarding the duplicate data or when it is judged in step ST24 that there is no duplicate data (step ST26). . This determination is performed based on the presence / absence of division identification information.

  When the control device 11 (21) determines that the data is not divided data, the control device 11 (21) ends the arithmetic processing related to the data reception. On the other hand, if the control device 11 (21) determines that the data is divided data, after receiving a plurality of related divided data, the control device 11 (21) combines the plurality of divided data based on the division identification information, and returns the original transmission information. It returns to the data concerned (step ST27).

  Thus, since this operation management system 1 has given identification information and division | segmentation identification information to the data of transmission information previously, even if the same data (division | segmentation data) is received in multiple numbers, the overlapping thing is discarded. And it can narrow down to only one.

  As described above, the operation management system 1 enables efficient data transfer and suppresses communication costs.

DESCRIPTION OF SYMBOLS 1 Operation management system 10 Center side terminal 11 Control apparatus 20 Car equipment 21 Control apparatus 40 Radio system 41,42 Transmission / reception part 50 Wireless LAN
51, 52 Transmission / reception unit 53 Access point 60 Mobile communication system 61, 62 Transmission / reception unit 63 IP network

Claims (7)

A center-side terminal deployed in the center;
An in-vehicle device mounted on the vehicle;
A first communication system capable of transmitting and receiving data between the center-side terminal and the in-vehicle device, and having a predetermined amount as an upper limit of the amount of data that can be transmitted and received;
A second communication system capable of transmitting and receiving data between the center-side terminal and the in-vehicle device, and capable of transmitting and receiving data having a data amount larger than the predetermined amount;
With
The second communication system is a high-cost communication system with a relatively high communication cost for transmission of data related to transmission information, and a communication system with a relatively low communication cost, and the access point is a base point. A low-cost communication system capable of transmitting and receiving data between the center-side terminal and the vehicle-mounted device is prepared,
Control device and a control device of the vehicle device of the center-side terminal, when the amount of data involved in the transmission information is less than the predetermined amount, allocating the first communication system as the information transmission path, related to the transmission information When the data amount of data exceeds the predetermined amount, the second communication system is assigned as an information transmission path ,
When the second communication system is assigned as an information transmission path, the center-side terminal control device and the in-vehicle device control device use the low-cost communication system in the second communication system in the second communication system. Preferentially assigned to the information transmission path over the high-cost communication system,
In the control device for the center side terminal and the control device for the in-vehicle device, the second communication system is assigned as an information transmission path, and the in-vehicle device is out of the communication range of the access point. When the vehicle speed of the vehicle exceeds a predetermined vehicle speed for determining that there is a possibility, the high-cost communication system in the second communication system is assigned as an information transmission path, and the second communication system is used as an information transmission path. An operation management system, wherein the low-cost communication system in the second communication system is assigned as an information transmission route when the vehicle speed of the vehicle is less than or equal to the predetermined vehicle speed . A center-side terminal deployed in the center;
An in-vehicle device mounted on the vehicle;
A first communication system capable of transmitting and receiving data between the center-side terminal and the in-vehicle device, and having a predetermined amount as an upper limit of the amount of data that can be transmitted and received;
A second communication system capable of transmitting and receiving data between the center-side terminal and the in-vehicle device, and capable of transmitting and receiving data having a data amount larger than the predetermined amount;
With
The second communication system is a high-cost communication system with a relatively high communication cost for transmission of data related to transmission information, and a communication system with a relatively low communication cost, and the access point is a base point. A low-cost communication system capable of transmitting and receiving data between the center-side terminal and the vehicle-mounted device is prepared,
When the data amount of the data related to the transmission information is equal to or less than the predetermined amount, the control device of the center side terminal and the control device of the in-vehicle device allocate the first communication system as an information transmission path and relate to the transmission information When the data amount of data exceeds the predetermined amount, the second communication system is assigned as an information transmission path,
When the second communication system is assigned as an information transmission path, the center side terminal control device and the in-vehicle device control device assign the low-cost communication system in the second communication system as an information transmission route, When transmission of data is not completed in the allocated low-cost communication system, the high-cost communication system in the second communication system is allocated to an information transmission path,
In the control device for the center side terminal and the control device for the in-vehicle device, the second communication system is assigned as an information transmission path, and the in-vehicle device is out of the communication range of the access point. When the vehicle speed of the vehicle exceeds a predetermined vehicle speed for determining that there is a possibility, the high-cost communication system in the second communication system is assigned as an information transmission path, and the second communication system is used as an information transmission path. An operation management system, wherein the low-cost communication system in the second communication system is assigned as an information transmission route when the vehicle speed of the vehicle is less than or equal to the predetermined vehicle speed. Each of the control device, when the information assignable said first communication system as the transmission path is a plurality of types provided, among the plurality several first communication system, before Symbol communications costs relatively little communication 2. The operation management system according to claim 1 , wherein the system is preferentially assigned to the information transmission route over a communication system having a relatively high communication cost . Each of the control devices, when a plurality of types of the first communication systems that can be assigned as information transmission paths are prepared, a communication system with a relatively low communication cost among the plurality of types of first communication systems. 3. The communication system according to claim 2 , wherein a communication system having a relatively high communication cost is allocated to the information transmission path when the transmission is not completed in the allocated communication system. Navigation management system. Each of the control devices gives identification information to the data at the time of transmission of the data, and when there is a plurality of duplicate data to which the same identification information is given in the received data, 5. The operation management system according to claim 1 , wherein surplus data is discarded so as to leave only one of a plurality of duplicate data . Each of the control devices divides the data into a plurality of data when the data amount of the data related to the transmission information exceeds a second predetermined amount larger than the predetermined amount, and sets the division identification information for each divided data. 6. The method according to claim 1 , wherein when a plurality of related divided data are received, the plurality of divided data are combined based on the division identification information. The operation management system described in 1. The operation management system according to claim 1, wherein the transmission information is operation information of the vehicle.

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