Driving diagnostic system

Abstract

To enable further activating communication between an object person to be watched and a watcher.SOLUTION: A processor 78 realizes an acquisition unit 71, a diagnosis unit 73, and a message application provision unit 80 by executing a program. The acquisition unit 71 acquires driving data of an object person to be watched from a vehicle 30. The diagnosis unit 73 performs driving diagnosis based on the driving data. The message application provision unit 80 displays a message input by the object person to be watched and a watcher on a chat screen 100. The message application provision unit 80 comprises a display control unit 84, and a message generation unit 82. The display control unit 84 displays the message on the chat screen 100. After an announcement message 102 for announcing that a result of the driving diagnosis is generated is displayed on the chat screen 100, the message generation unit 82 can generate a reaction message 108 with respect to the driving diagnosis.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This specification discloses an operation diagnosis system.

Background Art

[0002] By providing sensors on a vehicle, the behavior and driving operations of the vehicle can be detected. Based on the detected data (driving data), the driving content can be evaluated. For example, in Patent Document 1, if the result of the driving diagnosis is good, a privilege is given. This privilege is given to a person other than the driver (beneficiary). For example, when the driver is an elderly person, the driver's grandchild becomes the beneficiary. That is, if the driving content of the driver is good, a privilege is given to the driver's grandchild. By providing such a privilege service, a motivation to improve the quality of driving operations is generated in the driver.

[0003] Also, in Patent Document 2, when monitoring the behavior of a person to be monitored such as an elderly person, the person to be monitored is imaged by a camera. And the image of the person to be monitored is replaced with an avatar image. Thereby, the privacy of the person to be monitored is protected.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, it is conceivable to send the driving diagnosis obtained when the person to be monitored drives a vehicle not only to the person to be monitored but also to the monitor. Regarding the sent driving diagnosis, by having the person to be monitored and the monitor communicate with each other, an improvement in the driving operation by the person to be monitored can be expected.

[0006] However, there are times when it is difficult to immediately check the driving diagnosis, such as when the supervisor is at work. Therefore, this specification discloses a driving diagnosis system that can facilitate more active communication between the person being monitored and the supervisor. [Means for solving the problem]

[0007] The driving diagnostic system disclosed herein comprises a processor and a storage medium. A program is stored in the storage medium. By executing the program, the processor realizes an acquisition unit, a diagnostic unit, and a message application provision unit. The acquisition unit acquires driving data of the monitored person from the vehicle. The diagnostic unit performs a driving diagnosis based on the driving data. The message application provision unit displays messages entered by the monitored person and the monitor on a chat screen. The message application provision unit comprises a display control unit and a message generation unit. The display control unit displays messages on the chat screen. After a notification message announcing that the results of the driving diagnosis have been generated is displayed on the chat screen, the message generation unit can generate reaction messages to the results of the driving diagnosis.

[0008] With the above configuration, reaction messages to the driving diagnostic results are entered into the chat screen on behalf of the monitor. This encourages more active communication regarding the driving diagnostic results.

[0009] In the above configuration, the display control unit may also display a reaction message on the chat screen after a predetermined waiting period has elapsed from the time the notification message is displayed on the chat screen until the caregiver has entered a message.

[0010] With the above configuration, it is possible to prevent the reaction message generated by the message generation unit from appearing on the chat screen before the reaction message from the caregiver.

[0011] Furthermore, in the above configuration, the message generation unit may determine whether or not to generate a reaction message depending on the frequency of message input by the caregiver.

[0012] The message generation unit is provided to assist communication by caregivers. When caregivers are actively communicating, the generation of reaction messages is reduced, thereby minimizing interference with communication between the person being cared for and the caregivers.

[0013] Furthermore, in the above configuration, the message generation unit may send a safety confirmation message after a predetermined observation period from the time the person being monitored most recently entered a message.

[0014] According to the above configuration, if the whereabouts of the person being monitored are unknown from the messaging application, a safety confirmation message will be displayed, prompting a response from the person being monitored.

[0015] Furthermore, in the above configuration, the results of the driving diagnosis may include an assessment of the cognitive function of the person being monitored. In this case, the observation time is determined based on the assessment of cognitive function.

[0016] In the above configuration, if, for example, an assessment is made that cognitive function is impaired, it becomes possible to shorten the observation time or otherwise adjust the safety check according to the cognitive function of the person being monitored. [Effects of the Invention]

[0017] The driving diagnostic system disclosed herein allows for more active communication between the person being monitored and the person monitoring them. [Brief explanation of the drawing]

[0018] [Figure 1] This is a diagram showing the configuration of the driving diagnostic system. [Figure 2] This is a diagram showing the configuration of the vehicle. [Figure 3]It is a diagram illustrating the functional blocks of a mobile terminal and a center server. [Figure 4] It is a diagram illustrating an operation diagnosis report. [Figure 5] It is a diagram illustrating the processing from after driving to communication using a message application (direct communication by a caregiver). [Figure 6] It is a diagram illustrating a chat screen displayed on a mobile terminal when direct communication is being performed. [Figure 7] It is a diagram illustrating the processing from after driving to communication using a message application (alternate communication by a message generation unit). [Figure 8] It is a diagram illustrating a chat screen displayed on a mobile terminal when alternate communication is being performed. [Figure 9] It is a diagram illustrating the intervention frequency of communication by a message generation unit. [Figure 10] It is a diagram illustrating mixed communication in which direct communication and alternate communication are mixed. [Figure 11] It is a diagram illustrating a safety confirmation process. [Figure 12] It is a diagram illustrating a chat screen displayed on a mobile terminal when a safety confirmation process is executed. [Figure 13] It is a diagram explaining the observation time that triggers the input of a safety confirmation message.

Mode for Carrying Out the Invention

[0019] [Overall Configuration] Hereinafter, the configuration of the operation diagnosis system 10 will be described with reference to the drawings. FIG. 1 illustrates the overall configuration of the operation diagnosis system 10.

[0020] The driving diagnostic system 10 detects the behavior and driving operations of the vehicle 30. Based on the detected data (driving data), the driving diagnostic system 10 diagnoses changes in the driver's abilities and the suitability of the vehicle's operation. The results of the driving diagnosis are sent to the driver. Furthermore, if the driver is a person being monitored, the driving diagnostic system 10 also sends the diagnosis results to the person being monitored.

[0021] The individuals to be monitored include the elderly, novice drivers, and professional drivers. Furthermore, those acting as monitors include family members of the elderly, family members of novice drivers, and the drivers' employers.

[0022] Furthermore, the driving diagnostic system 10 provides a messaging application to both the caregiver and the person being monitored. Figure 6 shows an example of the chat screen 100. The chat screen 100 is displayed when the messaging application is launched. The chat screen 100 displays the message 104 entered by the caregiver and the message 106 entered by the person being monitored.

[0023] In addition, as illustrated in Figure 8, this messaging application displays messages 108 from a chatbot, in addition to messages from the caregiver and the person being monitored, on the chat screen 100. Messages are exchanged between the person being monitored, the caregiver, and the chatbot regarding the driving assessment of the person being monitored. This communication through the messaging application creates an incentive for the person being monitored to improve the quality of their driving. Details of the messaging application will be described later.

[0024] Referring to Figure 1, the driving diagnostic system 10 comprises a vehicle 30, a monitored person terminal 50, a monitor terminal 60, and a central server 70. The vehicle 30, the monitored person terminal 50, the monitor terminal 60, and the central server 70 are capable of sending and receiving data via a network N. Network N is, for example, the internet or a dedicated communication line. Network N is also a wireless communication network.

[0025] [vehicle] Vehicle 30 is a vehicle driven by a caregiver. Vehicle 30 is equipped with an on-board device 32. The on-board device 32 detects and collects the driver's actions and the behavior of vehicle 30. The on-board device 32 also transmits the collected data (driving data) to the center server 70 via the network N. As will be described later, the center server 70 evaluates the caregiver's driving operations based on the received driving data.

[0026] Figure 2 illustrates the detailed configuration of the vehicle 30. The onboard unit 32 is a computer. The onboard unit 32 includes a processor 34, memory 36, storage device 37, communication I / F 38, and in-vehicle communication I / F 40.

[0027] The storage device 37 is a storage medium that stores data for a longer period of time compared to, for example, the memory 36. The storage device 37 is composed of, for example, an HDD or an SSD. The storage device 37 stores a program that performs calculations on data sent from various ECUs (described later) of the vehicle 30. Driving data is generated when the processor 34 executes this program.

[0028] The vehicle 30 is equipped with multiple actuators 48. The multiple actuators 48 operate in response to instructions from the driver (i.e., the person being monitored). The multiple actuators 48 include, for example, a brake actuator 48a, a throttle actuator 48b, and a steering actuator 48c.

[0029] The vehicle 30 is also equipped with multiple sensors 44. These multiple sensors 44 detect the state of the vehicle 30. The multiple sensors 44 include, for example, a vehicle speed sensor 44a, a yaw rate sensor 44b, an external sensor 44c, a steering angle sensor 44d, a turn signal lever sensor 44e, and engine-related sensors 44f.

[0030] The external sensors 44c are a group of sensors used to detect the surrounding environment of the vehicle 30. These external sensors 44c include, for example, a camera, millimeter-wave radar, LiDAR, and GPS. The camera captures images of the area around the vehicle 30. The millimeter-wave radar is a ranging means that transmits probe waves and receives reflected waves. The LiDAR scans the area around the vehicle 30. The GPS detects the position of the vehicle 30.

[0031] Furthermore, the sensors 44f include an oil temperature sensor, an oil pressure sensor, and a rotation sensor. The oil temperature sensor measures the temperature of the engine oil. The oil pressure sensor measures the oil pressure of the engine oil. The rotation sensor detects the engine speed.

[0032] The vehicle 30 is further equipped with multiple ECUs 46 (Electronic Control Units). These multiple ECUs 46 include, for example, ADAS-ECU 46a, steering ECU 46b, brake ECU 46c, engine ECU 46d, and lamp ECU 46e.

[0033] Each ECU 46 is connected to at least one of the associated actuator 48 and sensor 44. The ECU 46 controls the operation of the connected actuator 48 based on instructions from the processor 34. The ECU 46 also transmits data detected by the sensor 44 to the in-vehicle unit 32 based on instructions from the processor 34.

[0034] The configuration of the vehicle 30 described above is an example and may be modified as appropriate. For example, the vehicle 30 may be an electric vehicle powered by a motor. In this case, the vehicle 30 includes a motor ECU, a motor sensor, a battery ECU, and a battery sensor. The motor ECU controls the operation of the motor. The motor sensor detects the operating state of the motor. The battery ECU controls the operation of the battery. The battery sensor detects the charging and discharging state of the battery.

[0035] Furthermore, the vehicle 30 may have advanced driver assistance functions or autonomous driving functions that automatically perform some or all of the acceleration / deceleration control and steering control.

[0036] [Monitoring target device] Referring to Figure 1, the monitored person terminal 50 is a communication terminal device owned by the monitored person. The monitored person terminal 50 is, for example, a smartphone. Physically, the monitored person terminal 50 comprises a communication interface 52, memory 54, storage device 56, and processor 58.

[0037] The processor 58 is a processing unit such as a CPU. The storage device 56 is a storage medium that stores data for a longer period of time compared to, for example, memory 54. The storage device 56 is composed of, for example, an HDD or an SSD.

[0038] The storage device 56 stores the message application program. The message application program is provided by the central server 70. When the processor 58 executes the message application program, the monitored person terminal 50 realizes the message application function unit illustrated in Figure 3. This function unit includes a display control unit 53, an input unit 55, and a display unit 57.

[0039] [Monitoring device] Referring to Figure 1, the caregiver terminal 60 is a communication terminal device owned by the caregiver. For example, similar to the monitored person terminal 50, the caregiver terminal 60 is a smartphone. In other words, if we replace the tens digit of the code from 5 to 6, the above description for the monitored person terminal 50 becomes a description for the caregiver terminal 60.

[0040] [Center Server] The central server 70 is, for example, a computer. The central server 70 provides data and services in response to requests from electronic terminals such as the in-vehicle device 32, the monitored person terminal 50, and the monitor terminal 60. The central server 70 is installed, for example, in a company that manufactures vehicles 30.

[0041] The central server 70 physically comprises a communication interface 72, memory 74, storage device 76, and processor 78. In Figure 1, the central server 70 is depicted as a single computer. However, the central server 70 may be composed of multiple computers that are physically separated from each other. Furthermore, at least one of the monitored person terminal 50, the monitor terminal 60, and the computer installed in the vehicle 30 may perform some of the functions of the central server 70, which will be described later.

[0042] The processor 78 is a processing unit such as a CPU. The storage device 76 is a storage medium that stores data for a longer period of time compared to, for example, memory 74. The storage device 76 is composed of, for example, an HDD or SSD. The storage device 76 stores a program related to operational diagnostics. When the processor 78 executes this program, the central server 70 realizes the functional blocks illustrated in Figure 3.

[0043] Specifically, the center server 70 comprises an acquisition unit 71, a diagnostic unit 73, a map information database 75, a diagnostic history database 77, and a message application provision unit 80. The acquisition unit 71 receives driving data of the monitored person from the in-vehicle device 32 via the network N (see Figure 1). The map information database 75 stores map information, as exemplified by the map image 90 in Figure 4. The diagnostic history database 77 stores the driving history and driving diagnostic history of the monitored person.

[0044] The diagnostic unit 73 performs a driving diagnosis based on the driving data of the person being monitored. For example, referring to Figure 4, the driving diagnosis is performed separately for each item: accelerator operation, brake operation, steering wheel operation, turn signal operation, and reverse operation.

[0045] For example, the system diagnoses whether there is sudden acceleration during acceleration, whether there is sudden deceleration during braking, whether there is sudden steering during steering, and the time taken from activating the turn signal lever to changing lanes during turn signal operation. Furthermore, the system diagnoses the number of times the vehicle moves forward and backward (the number of maneuvers).

[0046] For each of these diagnostic items, the diagnostic unit 73 performs a diagnostic process. In the diagnostic process, a comparison is made between predetermined reference values ​​and driving data. Based on the diagnostic process, the diagnostic unit 73 determines the rank of each item. From the ranks of each item, the overall safety rank (see Figure 4) is determined.

[0047] Furthermore, the diagnostic unit 73 generates advice comments for the ranks with relatively low evaluations among the ranks for each item. For example, the diagnostic history database 77 stores the advice comments for each item. The diagnostic unit 73 extracts the advice comments corresponding to the ranks with relatively low evaluations from the diagnostic history database 77.

[0048] The diagnostic unit 73 also creates a driving route image based on GPS data included in the driving data and a map information database. The created image is exemplified in Figure 4 as a map image 90. An image of a warning mark 96 may be superimposed on the driving route 92. For predetermined items, a warning mark 96 is placed at the point where the evaluation was deemed to be low.

[0049] [Message application] Referring to Figure 3, the central server 70 includes a message application provisioning unit 80. The message application provisioning unit 80 includes a message generation unit 82, a display control unit 84, and a message database 86.

[0050] The message application provider unit 80 provides a message application program to the monitored person's terminal 50 and the monitor's terminal 60. Figure 6 shows an example of the screen displayed when the monitored person's terminal 50 runs the message application.

[0051] A messaging application is a program that displays messages from both the user and the recipient in speech bubbles, facilitating communication in a chat format. When the messaging application is run, the monitored user's terminal 50 displays a chat screen 100 and a text box 101. The chat screen 100 displays messages from the monitored user 106 (self-message), messages from the caregiver 104 (other-user message), and messages from the messaging application provider 80 102 (notification message). Furthermore, the chat screen 100 displays the sender's icon 105 for the other-user message 104. The posting time is also displayed for each message.

[0052] In chat screen 100, the topic of driving diagnosis unfolds. As will be described later, the monitor views the monitored person's driving diagnosis report (see Figure 4) and enters a message (reaction message) about the report into the messaging application. Through communication about the driving results, the monitored person becomes motivated to improve their driving skills.

[0053] To notify the user that a driving diagnostic report (see Figure 4) has been created, the display control unit 84 displays a notification message 102 on the chat screen 100. In other words, the notification message 102 informs the user that the results of the driving diagnostic have been generated. Furthermore, the notification message 102 displays a link button image 103 for accessing the driving diagnostic report page.

[0054] Furthermore, referring to Figures 3 and 8, the message generation unit 82 can generate a reaction message 108. The reaction message 108 is automatically generated in response to the creation of the operation diagnostic report. In other words, the content of the reaction message 108 changes according to the content of the operation diagnostic report.

[0055] The message generation unit 82 is a so-called chatbot, and is composed of, for example, an image generation AI and a text generation AI. The image generation AI is composed of, for example, a convolutional neural network (CNN). The text generation AI is composed of, for example, a recurrent neural network (RNN).

[0056] For example, the image generation AI is input with the safety rank and the rank of each item. The output layer of the image generation AI generates the image that will be displayed in reaction message 108. Similarly, the text generation AI is also input with the safety rank and the rank of each item. The output layer of the text generation AI generates the text that will be displayed in reaction message 108.

[0057] Alternatively, instead of implementing a generation AI in the message generation unit 82, a program using a lookup table, which has a lower computational load, may be implemented. For example, a lookup table containing images and standard phrases corresponding to safety ranks is stored in the message database 86. The message generation unit 82 refers to the safety rank in the driving diagnosis report (see Figure 4) and extracts the corresponding image and standard phrase. The extracted image and standard phrase are displayed as reaction messages 108 on the chat screen 100.

[0058] Furthermore, reaction messages 108 are generated in response to notification messages (see S16 and S22 in Figure 7). However, the message generation unit 82 determines whether or not to generate reaction messages 108 depending on the frequency of posts by the observer. Details of this determination will be described later.

[0059] Furthermore, referring to Figure 12, if there are no posts from the person being monitored for an extended period, the message generation unit 82 generates a safety confirmation message 110. Details of the safety confirmation message generation process will be described later.

[0060] The display control unit 84 receives message data from the monitored person's terminal 50, the monitor's terminal 60, and the message generation unit 82. The display control unit 84 then sends the message to the monitored person's terminal 50 and the monitor's terminal 60 and displays the message.

[0061] The display control unit 84 also sets the timing for posting the safety confirmation message 110 (see Figure 12). The posting timing is set according to the cognitive function of the person being monitored. For example, if it is determined that the cognitive function of the person being monitored is declining, the display control unit 84 will post the safety confirmation message 110 relatively early. Details on setting the posting timing will be described later.

[0062] [Process from after driving to communication via messaging application] Figure 5 illustrates the data processing process after the vehicle 30 has been driven by the person being monitored. After driving, driving data is transmitted from the vehicle's onboard unit 32 to the acquisition unit 71 of the central server 70 (S10).

[0063] The diagnostic unit 73 performs an operational diagnosis based on the operational data (S12). The diagnostic unit 73 then creates an operational diagnosis report, as illustrated in Figure 4 (S14). For example, the diagnostic unit 73 saves the operational diagnosis report data in the message database 86.

[0064] The diagnostic unit 73 notifies the display control unit 84 that a driving diagnostic report has been created (S16). In response, the display control unit 84 sends a notification message to the message application program on the monitored person terminal 50 and the monitor terminal 60. For example, the notification message is a message informing that the results of the driving diagnostic have been generated, and is not the content of the driving diagnostic report itself.

[0065] Referring to Figure 6, when the messaging application is launched, the chat screen 100 is displayed on the displays of the monitored person's terminal 50 and the monitor's terminal 60. The display control unit 63 of each terminal displays a notification message 102 on the chat screen 100. A link button image 103 is superimposed on the notification message 102. By turning on the link image button, the driving diagnostic report (see Figure 4) stored in the message database 86 becomes viewable.

[0066] The monitor who has viewed the driving diagnostic report enters a message into the monitor terminal 60 (S18). Since this message includes comments on the driving diagnostic report, it is also called a reaction message 104 (see Figure 6). The reaction message 104 is first sent to the message application provider unit 80. Then, the message application provider unit 80 sends the reaction message 104 to the monitored person's terminal 50 and the monitor terminal 60.

[0067] The display control unit 53 of the monitored person's terminal 50 displays a reaction message 104 on the chat screen 100. The monitored person reads the reaction message 104 and enters a message 106 as a reply (S20).

[0068] In this way, the driver's driving habits are shared with the person being monitored. Furthermore, communication about the driving habits takes place. Such communication motivates the person being monitored to improve their driving skills.

[0069] [Proxy response by the message generation unit] Figure 7 shows an example of communication using an alternative message generated by the message generation unit 82. The processing from step S10 to step S16 is the same as in Figure 5, so the explanation is omitted.

[0070] Referring to Figures 7 and 8, when the notification message 102 is displayed on the chat screen 100 (S16), the message generation unit 82 determines whether or not to generate a reaction message 108, which is an alternative message. In determining whether or not to generate the message, the message generation unit 82 refers to the message frequency map illustrated in Figure 9. The message frequency map is stored in the message database 86.

[0071] The alternative messages generated by the message generation unit 82 are intended to assist communication by the caregiver. Therefore, if the caregiver frequently enters messages into the chat screen, the generation of alternative messages becomes unnecessary.

[0072] For example, the message generation unit 82 calculates the frequency of message input from the caregiver in response to the notification message. The message generation unit 82 then refers to the message frequency map to determine the input frequency (generation frequency or bot intervention frequency) of the reaction message 108 according to the caregiver's message input frequency. The higher the caregiver's input frequency, the lower the input frequency of the alternative message generated by the message generation unit.

[0073] For example, the message generation unit 82 counts the number of times the notification message 102 is entered (posted). If the frequency of alternative message input is 25%, then when the notification message 102 is entered 4 times, the message generation unit 82 generates a reaction message 108 as an alternative message.

[0074] When the message generation unit 82 generates a reaction message 108 in response to the display of the notification message 102, the display control unit 84 measures time from the moment the notification message 102 is displayed on the chat screen 100. When the measured time has elapsed to a predetermined waiting time ΔT1, the display control unit 84 retrieves the reaction message 108 from the message generation unit 82. The retrieved reaction message 108 is sent to the messaging applications of the monitored person's terminal 50 and the monitor's terminal 60.

[0075] A waiting time ΔT1 is set to prevent the display of reaction message 108 before a message is posted by the caregiver. The waiting time ΔT1 is the time to wait for the caregiver to input a message. In other words, the waiting time ΔT1 is set to prevent an immediate response by the message generation unit 82. For example, the waiting time ΔT1 is set to between 5 and 15 minutes.

[0076] For example, if a caregiver posts a message during the waiting time ΔT1, the display control unit 84 does not send the reaction message 108 to the person being cared for terminal 50 and the caregiver terminal 60.

[0077] Alternatively, as illustrated in Figure 10, a reaction message 108 may be posted by the message generation unit 82 regardless of whether or not a reaction message 104 is posted by the caregiver. When multiple reaction messages are displayed on the chat screen 100 in response to the driving diagnosis, the person being monitored is motivated to improve their driving skills.

[0078] [Checking on the well-being of the person being monitored] The messaging application can be used to check on the well-being of the person being monitored. Figure 11 illustrates a situation where there have been no messages from the person being monitored for a long period of time since the most recent message post (S20).

[0079] The display control unit 84 measures time from the most recent message input (message posting) of the person being monitored. When the measured time has elapsed to a predetermined observation time ΔT2, the display control unit 84 causes the message generation unit 82 to generate a safety confirmation message 110 (see Figure 12). The generated safety confirmation message 110 is sent from the display control unit 84 to the message applications of the monitored person's terminal 50 and the monitor's terminal 60.

[0080] The display of the safety confirmation message 110 on the chat screen 100 allows for a reaction from the person being monitored. Furthermore, for the caregiver, the safety confirmation message 110 provides an opportunity to contact the person being monitored.

[0081] The observation time ΔT2 is set based on the cognitive function map in Figure 13. The cognitive function map is stored in the message database 86. In the cognitive function map, for example, the horizontal axis represents the observation time and the vertical axis represents the cognitive ability evaluation value of the person being monitored.

[0082] The driving diagnostic report (see Figure 4) includes items related to the cognitive function of the person being monitored. For example, a high number of reversing maneuvers may indicate a decline in cognitive function. Alternatively, the activation of certain ADAS (Advanced Driver-Assistance Systems) functions may also indicate a decline in cognitive function. For instance, the activation of PCS (Pre-Collision System) or the unintended acceleration suppression system may indicate a decline in cognitive function.

[0083] For example, items related to cognitive function are pre-set from the driving data acquired from the vehicle 30. The diagnostic unit calculates an evaluation value for cognitive ability based on the data for these items. The display control unit 84 determines the observation time ΔT2 based on the calculated evaluation value and the cognitive function map. For example, the lower the evaluation value for cognitive function, the shorter the observation time ΔT2 is set to. The observation time ΔT2 is set to a range of, for example, 1 hour or more and 24 hours or less.

[0084] [Other embodiments] In the embodiment described above, notification message 102 (see Figure 6) was posted to the chat screen 100 for all driving diagnostic reports. However, to reduce the burden on the monitor, notification message 102 may be generated selectively.

[0085] For example, a focus item is set for one of the items in the driving diagnostic report. For example, a focus item is set by a monitor. Then, only the driving diagnostic report when there is a change in the focus item is subject to notification. The display control unit 84 refers to the driving diagnostic report and the focus item to determine whether or not to generate the notification message 102.

[0086] In this case, for example, notification message 102 may be displayed on the chat screen 100 at the end of the month. Notification message 102 will have a link button overlaid on it for viewing the driving diagnostic report, which will be compiled on a monthly basis.

[0087] Furthermore, in the above-described embodiment, as illustrated in Figure 3, the message application provisioning unit 80 is provided within the central server 70. Instead of this in-house installation configuration, the message application provisioning unit 80 may be installed on an external server. [Explanation of Symbols]

[0088] 10 Driving diagnostic system, 30 Vehicle, 32 In-vehicle device, 50 Monitored person terminal, 60 Monitor terminal, 70 Center server, 71 Acquisition unit, 73 Diagnostic unit, 75 Map information database, 76 Storage device (storage medium), 77 Diagnostic history database, 78 Processor, 80 Message application provision unit, 82 Message generation unit, 84 Display control unit, 86 Message database, 100 Chat screen, 102 Notification message, 104, 108 Reaction message, 110 Safety confirmation message.

Claims

1. It is a driving diagnostic system, Equipped with a processor and storage medium, By executing the program stored in the storage medium, the processor An acquisition unit that acquires driving data of the person being monitored from the vehicle, A diagnostic unit that performs operational diagnostics based on the aforementioned operational data, A message application provider unit that displays the messages entered by the person being monitored and the monitor on a chat screen, To achieve, The aforementioned message application provider unit, A display control unit that displays a message on the aforementioned chat screen, A message generation unit is provided that, after a notification message indicating that the results of the aforementioned driving diagnosis have been generated is displayed on the chat screen, the unit is capable of generating a reaction message to the results of the driving diagnosis. Equipped with, The display control unit displays the reaction message on the chat screen after a predetermined waiting period of time from the time the notification message is displayed on the chat screen, for waiting for the caregiver to input a message. Driving diagnostic system.

2. A driving diagnostic system according to claim 1, Depending on the frequency with which the observer inputs the message, the message generation unit determines whether or not to generate the reaction message. Driving diagnostic system.

3. A driving diagnostic system according to claim 1, After a predetermined observation period from the most recent message input by the person being monitored, the message generation unit sends a safety confirmation message. Driving diagnostic system.

4. A driving diagnostic system according to claim 3, The results of the aforementioned driving diagnosis include an evaluation of the cognitive function of the person being monitored. Based on the aforementioned assessment of cognitive function, the observation time is determined. Driving diagnostic system.

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