JP2019121222A - Communication system - Google Patents

Abstract

To provide an operation system capable of designating or modifying a mode of alarming to be performed by onboard equipment without forcing an operator to bear a burden.SOLUTION: A communication system 1 includes onboard equipment 10 that is mounted in a vehicle, records operation data concerning a vehicle, and has a wireless communication feature, and a data center 20 that has the wireless communication feature, acquires the operation data from the onboard equipment 10 through wireless communication with the onboard equipment 10, and preserves the operation data. When an index value representing a traveling state of the vehicle exceeds a predetermined threshold, the onboard equipment 10 gives the alarm on a predetermined alarm level. The data center 20 modifies at least one of the threshold and alarm level on the basis of the preserved operation data, and transmits the contents of modification to the onboard equipment 10. When receiving the contents of modification from the data center 20, the onboard equipment 10 gives the alarm on the basis of the threshold and alarm level dependent on the contents of modification.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a communication system comprising an onboard unit and a data center.

  2. Description of the Related Art A communication system for transmitting and storing operation data of a vehicle temporarily recorded on a vehicle-mounted device mounted on a vehicle to a data center wirelessly at predetermined timings is widely known (eg, patent See documents 1-3). A shipping company using this communication system makes a request for viewing operation data of a plurality of vehicles owned by the company (taxi, trucks and other sales vehicles) from the operation terminal of the company to the data center, thereby making the operation data And manage the operation status of the plurality of vehicles.

Unexamined-Japanese-Patent No. 2009-163583 Unexamined-Japanese-Patent No. 2010-224686 JP, 2016-4498, A

  It is also widely known that an on-vehicle device performs an alarm at a predetermined alarm level when an index value (vehicle speed or the like) indicating a traveling state of the vehicle exceeds a predetermined threshold. The shipping company using the above communication system sets the above threshold and alarm level individually for each vehicle at its own operation terminal, and the setting content is indirectly or via the data center By transmitting directly to each vehicle-mounted device without passing through the center, the above-mentioned threshold and alarm level can be set individually for each vehicle.

  In recent years, there is a tendency to mount vehicle-mounted devices on vehicles in a wide variety of vehicle types and in various regions and countries. In such a situation, it is a heavy burden for the worker to set the above-mentioned threshold and alarm level individually for each vehicle and transmit the contents at the operator's own operation terminal. .

  This invention is made in view of the situation mentioned above, The objective is to provide the operation system which can set and change the mode of the alarm which a vehicle-mounted device performs without putting a burden on a worker. .

In order to achieve the objective mentioned above, the communication system concerning the present invention is characterized by following (1)-(5).
(1)
An on-vehicle device mounted on a vehicle and having operation data related to the vehicle and having a wireless communication function;
A data center having a wireless communication function and acquiring and storing the operation data from the in-vehicle device by wireless communication with the in-vehicle device;
A communication system comprising
The onboard unit is
Alarming is performed at a predetermined alarm level when the index value representing the traveling state of the vehicle exceeds a predetermined threshold value;
The data center is
Changing at least one of the threshold value and the alarm level based on the stored operation data, and transmitting the change content to the on-vehicle device;
The onboard unit is
The communication system is configured to perform the alarm based on the threshold based on the change content and the alarm level when the change content is received from the data center.
(2)
In the communication system described in (1) above,
The data center is
Based on the stored operation data, it is determined whether or not the vehicle is located in a predetermined place, and at least one of the threshold and the alarm level is changed based on the determination result. Being a communication system.
(3)
In the communication system according to (1) or (2) above,
The data center is
Based on the stored operation data, the number of times the alarm is performed by the vehicle-mounted device within a predetermined period is specified, and at least one of the threshold and the alarm level is determined based on the number of alarms. Being a communication system configured to change.
(4)
In the communication system according to any one of the above (1) to (3),
The data center is
The vehicle type of the vehicle on which the on-board unit is mounted is specified based on the stored operation data, and at least one of the threshold and the alarm level is changed based on the vehicle type. Be a communication system.
(5)
In the communication system according to any one of the above (1) to (4),
The data center is
Based on the stored operation data, the country in which the vehicle equipped with the on-board unit is located is identified, and in consideration of the identified country law, at least one of the threshold and the alarm level is determined. Being a communication system configured to change.

  According to the communication system configured as described in (1) above, the warning mode (the threshold and the alarm level) performed by the on-board unit based on the operation data of the vehicle that the data center acquires and stores from the on-board unit by wireless communication. One) is automatically set and changed by the data center, and the change is automatically transmitted to the on-board unit. The vehicle-mounted device automatically sets and changes the mode of the alarm based on the transmitted contents of change, and performs the alarm based on the mode of the alarm thus set and changed. Therefore, it becomes possible to set and change the mode of the alarm which a vehicle-mounted device performs, without putting a burden on a worker.

  According to the communication system configured as described in (2) above, an alarm performed by the on-vehicle device depending on whether the vehicle is located in a predetermined place (specifically, in a predetermined area, a predetermined country, etc.) Mode is automatically set and changed. Therefore, depending on the area or country where the vehicle is located, the alarm can be issued in the form of an appropriate alarm considering the area or country.

  According to the communication system configured as described in (3) above, the mode of the alarm performed by the on-board unit is automatically set and changed according to the number of times the on-board unit performs the alarm within the predetermined period. Therefore, in accordance with the frequency of the alarm, the alarm can be performed in a mode of an appropriate alarm in consideration of the frequency of the alarm.

  According to the communication system configured as described in (4) above, the mode of the alarm performed by the on-board unit is automatically set and changed according to the type of vehicle (passenger car, truck, etc.) on which the on-board unit is mounted. Therefore, in accordance with the type of vehicle, the alarm can be issued in a mode of an appropriate alarm in consideration of the type of vehicle.

  According to the communication system configured as described in (5) above, the mode of the alarm performed by the on-board unit is automatically set and changed in consideration of the laws of the country in which the vehicle is located. Therefore, in accordance with the law of the country in which the vehicle is located, the alarm can be issued in the form of an appropriate alarm in consideration of the law.

  ADVANTAGE OF THE INVENTION According to this invention, the operation system which can set and change the aspect of the warning which a vehicle-mounted apparatus performs can be provided, without burdening a worker.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the modes for carrying out the invention described below (hereinafter referred to as "embodiments") with reference to the attached drawings.

FIG. 1 is a block diagram showing the configuration of a communication system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the vehicle-mounted device shown in FIG. FIG. 2 is a block diagram showing the configuration of the data center shown in FIG. FIG. 4 is a flowchart showing the flow of processing when the data center shown in FIG. 1 changes the mode of the alarm.

Embodiment
Hereinafter, a communication system 1 according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the communication system 1 includes an on-vehicle device 10 having a wireless communication function, and a data center 20 having a wireless communication function.

  The communication system 1 transmits the operation data of the vehicle temporarily recorded in the on-board unit 10 mounted on the vehicle to the data center 20 at predetermined timing via the wide area communication network 40 and the Internet communication network 50. It is supposed to be saved. The operation data includes various data relating to the vehicle operation such as speed information, position information, engine rotation speed information, vehicle model of the vehicle, and the execution status of the alarm by the on-vehicle device 10.

  Communication system 1 is typically utilized by a shipping company. The transportation company using the communication system 1 uses the viewing software (browser) 31 from its own office PC 30 to request viewing of the operation data of a plurality of vehicles (taxi, trucks, and other sales vehicles) owned by the company. Then, by performing the operation to the data center 20 via the Internet communication network 50, it is possible to obtain the operation data and manage the operation states of the plurality of vehicles.

(On-board unit 10)
Hereinafter, first, the configuration of the vehicle-mounted device 10 will be described with reference to FIG. As shown in FIG. 2, the vehicle-mounted device 10 includes a microcomputer (CPU) 11, a display unit 12, a memory (SRAM) 13, a memory (ROM) 14, a serial interface (I / F) 15, a communication interface 16, and an external The display 17, the communication module 18, the communication antenna 19, the operation unit 61, the audio output unit 62, the speaker 63, the signal processing unit 64, and the GPS receiver 65 are provided.

  The microcomputer 11 performs various controls necessary to realize the entire function of the vehicle-mounted device 10 by executing a program incorporated in advance and a program existing on the memory 14.

  The display unit 12 has a function of displaying visible information with a relatively small amount of information, and can be controlled by the microcomputer 11 to display numerical values such as vehicle speed, time, and position.

  The memory 13 is volatile and can freely read and write data by access of the microcomputer 11. The memory 13 is used to temporarily hold various data including operation data of the vehicle.

  The memory 14 is non-volatile and can freely read and write data by access of the microcomputer 11. The memory 14 is used to hold software necessary for realizing various functions of the vehicle-mounted device 10, for example, a program such as firmware, and a constant data group such as a hazard map.

  The external display 17 has a function of displaying various visible information in a state in which the crew can easily view. The external display 17 is connected to the microcomputer 11 via the serial interface 15. The external display 17 is used, for example, to display the state of the on-board unit 10, or to display a message of characters useful for safe driving, a message for prompting an input operation to the on-board unit 10, and the like.

  The communication module 18 is required to secure a wireless communication line for data communication by performing wireless communication with, for example, a predetermined wide area communication network 40 provided by a mobile communication carrier using the communication antenna 19. Communication function. The communication module 18 is connected to the microcomputer 11 via the communication interface 16.

  The operation unit 61 has a plurality of operation buttons (not shown) that can be operated by the crew. The microcomputer 11 can detect the input operation of the crew by reading the change of the state of each operation button of the operation unit 61.

  The voice output unit 62 can synthesize a pseudo voice signal from a text message. The pseudo voice signal generated by the voice output unit 62 is output from the speaker 63 as a voice message. For example, it is possible to output voice messages prompting crew members to drive safely, voice messages useful for efficient vehicle operation, voice messages for prompting input operations, and the like.

  The signal processing unit 64 can process the plurality of signals SG1, SG2, and SG3 representing the operation state of the vehicle and give the processed signals to the microcomputer 11. Specifically, a signal representing the on / off state of the ignition of the vehicle, a pulse signal representing the vehicle speed, a pulse signal representing the engine speed, etc. are input as the signals SG1, SG2, and SG3.

  The GPS receiver 65 can receive radio waves from a plurality of GPS (Global Positioning System) satellites, and calculate the reception point, that is, the position (latitude / longitude) of the vehicle based on the received time information.

  Therefore, the microcomputer 11 can grasp the on / off state of the ignition, the vehicle speed, the engine rotational speed and the like based on the signal input from the signal processing unit 64, and the current position of the vehicle is determined from the output of the GPS receiver 65. It can also be grasped. Further, for example, based on the detection result of the button operation of the operation unit 61 or the like, it is also possible to grasp "actual vehicle" and "empty vehicle" representing the difference in the operation state of the vehicle. Further, the microcomputer 11 can automatically save the information on the memory 14 or transfer it to the data center 20 via the wide area communication network 40.

(Data center 20)
Next, the configuration of the data center 20 will be described with reference to FIG. As shown in FIG. 3, the data center 20 includes a server main body 21, a large capacity storage device 22, a user management unit 24, an on-vehicle device management unit 25, a user communication interface 26, and an on-vehicle communication interface 27. Means

  The server main body 21 is configured by a predetermined computer, and data is transmitted between the on-vehicle unit communication interface 27 and the on-vehicle unit 10 of each vehicle via the Internet communication network 50 and the wide area communication network 40 as necessary. Communicate. Further, the server main body 21 performs data communication with the office PC 30 of each user via the user communication interface 26 and the Internet communication network 50 as needed.

  Further, the server main body 21 performs various processing in accordance with a predetermined processing procedure or in accordance with a result of analyzing a request input from the office PC 30. For example, data can be acquired from each vehicle-mounted device 10 at a required timing, the acquired data can be stored in the mass storage device 22, predetermined analysis processing can be performed on the acquired data, or the acquired data can be Can be transferred to the office PC 30. Also, the message transmitted by the office PC 30 can be transferred to the on-vehicle device 10.

  The mass storage device 22 can store a large amount of data acquired from each of the large number of vehicle-mounted devices 10 or can store data of analysis results.

  The user management unit 24 holds information necessary to manage a user who uses a service of the data center 20. That is, the user management unit 24 holds a user ID required to identify each user registered in advance, a unique password for each user required for authentication, and the like.

  When each user accesses the server body 21 of the data center 20 for the first time, it is necessary to identify the user who uses the service and perform authentication. At this time, whether or not the user is a legitimate user is identified by collating information such as the user ID and password input from the office PC 30 to the server main body 21 with the information held on the user management unit 24. it can.

  The vehicle-mounted device management unit 25 holds information (specifically, a vehicle-mounted device management table, etc.) necessary for grasping, for each user, each vehicle-mounted device 10 mounted on a vehicle owned or managed by each user. ing. By using the vehicle-mounted device management unit 25, the server main body 21 can grasp each of the vehicle-mounted devices 10 under the control of the user for each user.

(Communication system 1)
The vehicle-mounted device 10 is configured to issue an alarm at a predetermined alarm level when the “index value representing the traveling state of the vehicle” exceeds a predetermined threshold. Specifically, the alarm by the vehicle-mounted device 10 can be performed by generation of an alarm sound by the speaker 63, display of a message by the external display 17, or the like.

  Specifically, the “index value representing the traveling state of the vehicle” includes the vehicle speed, the engine rotation speed, the idling duration time, the continuous operation time, the number of times of sudden start and rapid acceleration / deceleration, and the like. For each index value, a single value or one selected from a plurality of values is set as the “threshold”. A plurality of levels (stages) are set as the "alarm level". For example, if the alarm is sounded, the higher the alarm level, the higher the alarm volume. If the alert is triggered by a message, for example, the higher the alert level, the stronger the content of the message, or the larger (thicker) the characters that describe the message.

  In the communication system 1, an aspect (a threshold or an alarm level) of an alarm performed by the on-board unit 10 based on operation data acquired by the data center 20 from the on-board unit 10 by wireless communication and stored in the mass storage device 22. Are automatically set and changed, and the contents of the change are automatically transmitted to the on-vehicle device 10. The vehicle-mounted device 10 to which the change content has been transmitted automatically sets / changes the manner of the alarm based on the transmitted change content, and performs the alarm based on the manner of the alarm set / changed in this manner. .

  Hereinafter, the flow of processing when the data center 20 changes the mode of the alarm as described above will be described with reference to the flowchart shown in FIG. Specifically, the process shown in FIG. 4 is executed by the server main body 21 of the data center 20 at each elapse of a predetermined period. For example, one day, one week, one month, etc. may be employed as the predetermined period. In FIG. 4, for convenience of explanation, only the “vehicle speed” is adopted as “the index value representing the traveling state of the vehicle”, and the case where the warning is given by voice is shown.

  First, operation data (vehicle performance data) for a predetermined period acquired from the vehicle-mounted device 10 is acquired from data stored in the large-capacity storage device 22 (S1), and within the predetermined period from the vehicle performance data In step S2, it is determined whether the vehicle is located in a designated place (S2). The designated place typically includes a predetermined area and a predetermined country. The case where the vehicle is located in the designated place ("Yes" in S2) will be described later.

  If the vehicle is located outside the designated place ("No" in S2), it is determined from the vehicle result data whether or not there is a history (speed over) where the vehicle speed exceeds the threshold within a predetermined period (S3) If the speed is not exceeded ("No" in S3), it is determined whether or not the number of times the alarm has been issued by the vehicle-mounted device 10 is equal to or more than the specified number within the predetermined period (S4).

  If there is no overspeeding and the number of alarms is less than the prescribed number within a predetermined period (S3, S4 "No"), the mode (threshold or alarm level) of the alarm is changed (S5) . Specifically, for example, the setting of the alarm volume is changed to a level one step lower than the current level, or the vehicle speed threshold is changed to a value one step lower than the current value. However, if the current value of the alarm volume or the current value of the vehicle speed threshold has reached a predetermined lower limit (the most severe value), the alarm volume or vehicle speed threshold is not changed. .

  On the other hand, if the speed is over within the predetermined period ("Yes" in S3), it is determined whether the alarm volume is at the maximum level (S6), and if the alarm sound is not at the maximum level ("No in S6" And the alarm volume setting is changed to a level one step higher than the current level (S7). If the alarm sound is at the maximum level ("Yes" in S6), the mode of the alarm (threshold or alarm level) is changed (S8). Specifically, for example, the threshold value of the vehicle speed is changed to a value one step higher than the current value. However, when the current value of the vehicle speed threshold has reached a predetermined upper limit (the least severe value), the vehicle speed threshold is not changed.

  Similarly, if the number of times of alarming is equal to or more than the prescribed number of times within the predetermined period ("Yes" in S4), it is determined whether the alarm volume is at the maximum level (S9). (“No” in S9), the setting of the alarm volume is changed to a level one step higher than the current level (S10). If the alarm sound is at the maximum level ("Yes" in S9), the mode of the alarm (threshold or alarm level) is changed (S8). Specifically, as described above, for example, the vehicle speed threshold is changed to a value one step higher than the current value. However, when the current value of the vehicle speed threshold has reached a predetermined upper limit (the least severe value), the vehicle speed threshold is not changed.

  Heretofore, the case where the vehicle is located outside the designated place ("No" in S2) has been described. On the other hand, when the vehicle is located in the designated place ("Yes" in S2), the setting change corresponding to the designated place is made (S11). Specifically, for example, when a factory of a vehicle manufacturer corresponds as a designated place, the threshold value of the vehicle speed is a value set for a general road or highway (for example, 60 km / h, 100 km / h) It is changed to a much smaller value (e.g. 10 km / h). Alternatively, when the vehicle manufacturer's high-speed test course falls under the designated place, the vehicle speed threshold is significantly higher than the values set for ordinary roads and expressways (for example, 60 km / h, 100 km / h) It is changed to a large value (for example, 200 km / h).

  As described above, when the current process shown in FIG. 4 is completed, the data center 20 (server main body 21) automatically transmits, to the vehicle-mounted device 10, the contents of the change of the alarm mode in the current process. The vehicle-mounted device 10 to which the change content has been transmitted automatically sets and changes the aspect of the alarm based on the transmitted change content, and thereafter, based on the aspect of the alarm thus set and changed. Give an alert.

  The communication system 1 sets / changes the mode of the alarm by the on-vehicle device 10 based on the motion data (vehicle performance data) of the vehicle individually for each of a plurality of vehicles owned by the transportation company using the communication system 1 it can.

(Action / effect)
As described above, according to the communication system 1 according to the present embodiment, the alarm performed by the on-board unit 10 based on the operation data of the vehicle that the data center 20 has acquired and stored from the on-board unit 10 by wireless communication. The mode (at least one of the threshold and the alarm level) is automatically set and changed by the data center 20, and the change is automatically transmitted to the on-vehicle device 10. The vehicle-mounted device 10 automatically sets and changes the mode of the alarm based on the transmitted content of the change, and performs the alarm based on the mode of the alarm set and changed as described above. Therefore, it becomes possible to set and change the mode of the alarm which the onboard equipment 10 performs without imposing a burden on the worker.

  Furthermore, according to whether the vehicle is located in a predetermined place (specifically, in a predetermined area, a predetermined country, etc.), the mode of the alarm performed by the on-vehicle device 10 is automatically set and changed. Ru. Therefore, depending on the area or country where the vehicle is located, the alarm can be issued in the form of an appropriate alarm considering the area or country.

  Furthermore, in accordance with the number of times the vehicle-mounted device 10 has issued an alarm within a predetermined period, the mode of the alarm issued by the vehicle-mounted device 10 is automatically set and changed. Therefore, in accordance with the frequency of the alarm, the alarm can be performed in a mode of an appropriate alarm in consideration of the frequency of the alarm.

<Other aspects>
The present invention is not limited to the above embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the embodiments described above, and appropriate modifications, improvements, etc. are possible. In addition, the material, shape, size, number, arrangement location, and the like of each component in the embodiment described above are arbitrary and not limited as long as the present invention can be achieved.

  For example, in the above embodiment, the data center 20 identifies the vehicle type of the vehicle equipped with the vehicle-mounted device 10 based on the operation data (vehicle performance data) for a predetermined period, and based on the identified vehicle type It may be configured to change the aspect (threshold or alarm level). According to this, according to a vehicle type (a passenger car, a truck, etc.) of the vehicle carrying the on-board unit 10, the aspect of the alarm which the on-board unit 10 performs is set and changed automatically. Therefore, in accordance with the type of vehicle, the alarm can be issued in a mode of an appropriate alarm in consideration of the type of vehicle.

  Furthermore, in the above embodiment, the data center 20 identifies the country in which the vehicle equipped with the vehicle-mounted device 10 is located based on the operation data (vehicle performance data) for a predetermined period, and takes into consideration the laws of the identified country. Then, it may be configured to change the aspect of the alarm (threshold or alarm level). According to this, in consideration of the laws of the country in which the vehicle is located, the mode of the alarm performed by the on-board unit 10 is automatically set and changed. Therefore, in accordance with the law of the country in which the vehicle is located, the alarm can be issued in the form of an appropriate alarm in consideration of the law.

  Furthermore, in the above-described embodiment, in consideration of the company definition of the shipping company using the communication system 1, the aspect of the alarm (threshold or alarm level) may be changed. According to this, the mode of the alarm performed by the on-board unit 10 is automatically set and changed in consideration of the company's regulations of the shipping company. Therefore, in accordance with the company regulations of the shipping company, the alarm can be issued in the form of an appropriate alarm taking into consideration the company regulations.

Here, the features of the embodiment of the communication system 1 according to the present invention described above will be briefly summarized and listed in the following (1) to (5).
(1)
An on-vehicle device (10) mounted on a vehicle and recording operation data relating to the vehicle and having a wireless communication function;
A data center (20) having a wireless communication function and acquiring and storing the operation data from the onboard unit (10) by wireless communication with the onboard unit (10);
A communication system (1) comprising
The vehicle-mounted device (10)
Alarming is performed at a predetermined alarm level when the index value representing the traveling state of the vehicle exceeds a predetermined threshold value;
The data center (20)
Changing at least one of the threshold value and the alarm level based on the stored operation data, and transmitting the change content to the onboard unit (10);
The vehicle-mounted device (10)
A communication system (1) configured to perform the alarm based on the threshold based on the change content and the alarm level when the change content is received from the data center (20).
(2)
In the communication system (1) described in (1) above,
The data center (20)
Based on the stored operation data, it is determined whether or not the vehicle is located in a predetermined place (S2), and at least one of the threshold and the alarm level is changed based on the determination result. Communication system (1), configured as follows.
(3)
In the communication system (1) described in the above (1) or (2),
The data center (20)
Based on the stored operation data, the number of times the alarm is performed by the vehicle-mounted device (10) within a predetermined period is specified, and based on the number of alarms (S4), the threshold and the alarm A communication system (1) configured to change at least one of the levels.
(4)
In the communication system (1) according to any one of the above (1) to (3),
The data center (20)
Based on the stored operation data, a vehicle type of the vehicle equipped with the vehicle-mounted device (10) is identified, and at least one of the threshold and the alarm level is changed based on the vehicle type. Communication system (1).
(5)
In the communication system (1) according to any one of the above (1) to (4),
The data center (20)
Based on the stored operation data, the country in which the vehicle equipped with the onboard unit (10) is located is identified, and in consideration of the laws of the identified country, at least the threshold and the alarm level Communication system (1), configured to change one.

1 Communication system 10 On-board unit 20 Data center 30 Office PC

Claims (5)

An on-vehicle device mounted on a vehicle and having operation data related to the vehicle and having a wireless communication function;
A data center having a wireless communication function and acquiring and storing the operation data from the in-vehicle device by wireless communication with the in-vehicle device;
A communication system comprising
The onboard unit is
Alarming is performed at a predetermined alarm level when the index value representing the traveling state of the vehicle exceeds a predetermined threshold value;
The data center is
Changing at least one of the threshold value and the alarm level based on the stored operation data, and transmitting the change content to the on-vehicle device;
The onboard unit is
The communication system is configured to perform the alarm based on the threshold based on the change content and the alarm level when the change content is received from the data center. In the communication system according to claim 1,
The data center is
Based on the stored operation data, it is determined whether or not the vehicle is located in a predetermined place, and at least one of the threshold and the alarm level is changed based on the determination result. Communication system. In the communication system according to claim 1 or 2,
The data center is
Based on the stored operation data, the number of times the alarm is performed by the vehicle-mounted device within a predetermined period is specified, and at least one of the threshold and the alarm level is determined based on the number of alarms. A communication system configured to change. The communication system according to any one of claims 1 to 3.
The data center is
The vehicle type of the vehicle on which the on-board unit is mounted is specified based on the stored operation data, and at least one of the threshold and the alarm level is changed based on the vehicle type. Communications system. The communication system according to any one of claims 1 to 4.
The data center is
Based on the stored operation data, the country in which the vehicle equipped with the on-board unit is located is identified, and in consideration of the identified country law, at least one of the threshold and the alarm level is determined. A communication system configured to change.

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