JP2007284049A - Economical drive support device, car-navigation system, and economical drive support program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an economical drive support device, a car-navigation system and an economical drive support program, which support economical and safe driving of a vehicle by making a driver recognize one's own travelling condition in real time. <P>SOLUTION: A determination whether speed, acceleration and idling time correspond to a predetermined warning condition or not is done based on measurement data from a GPS receiver 30, and a warning message is displayed in a touch panel type crystal liquid display 15 based on a result of the determination. With this structure, economical and safe drive of the vehicle are supported by making the driver visually recognize the warning message to awake attention. Especially, since an alarm generating section 17 generates alarm sound when the warning message is displayed in the touch panel type crystal liquid display 15, the alarm sound alerts to the driver to securely recognize the warning message on display. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an eco-drive support device, a car navigation system, and an eco-drive support program for supporting economical and safe driving of a vehicle.

  Conventionally, as a vehicle operation management system, in a commercial vehicle such as a route truck, the engine speed, engine load, idling time, sudden acceleration / deceleration, steering wheel angle, etc. are obtained from various sensors and stored in an in-vehicle device. In addition, there is one in which information stored in the in-vehicle device is taken out after the operation is completed so that it is possible to know in what state the vehicle is driven (for example, see Patent Document 1).

However, since this conventional system does not have real-time characteristics, it becomes a follow-up measure, and if the driver is driving dangerously, the driver cannot be alerted at that time. In addition, since the in-vehicle device is expensive, the spread of the in-vehicle device is hindered. Further, in the case of a vehicle that has been entrusted with transportation from another person, there is a problem that operation management by the in-vehicle device becomes impossible. In view of such circumstances, a portable terminal having a current position information acquisition unit that is carried by a passenger in a vehicle and that acquires current position information and a communication unit that communicates with an information processing unit via a communication network. The mobile terminal intermittently transmits the current position information to the information processing means, and the information processing means uses the current position information intermittently transmitted from the mobile terminal to calculate the speed or acceleration as the traveling state of the vehicle. There has been proposed a vehicle management system configured to calculate and transmit information based on the calculation result to a portable terminal (see, for example, Patent Document 2). According to this prior art, a mobile terminal, for example, a mobile phone, is cheaper than a conventional in-vehicle device for operation management, and can be operated in any vehicle as long as it has a mobile terminal. There is an advantage that it is possible to alert the driver in real time when driving dangerously, such as sudden start or excessive speed.
Japanese Patent Publication No. 5-14315 JP 2004-171191 A

  However, in the conventional configuration described in Patent Document 2 described above, the fact that the energy-saving operation is not performed is merely notified by an alarm from the alarm generation unit of the mobile phone or a sound from the speaker. There is a problem that the driver cannot be expected to improve the driving method effectively by specifically recognizing the problem of his / her driving situation.

  The present invention has been made in view of the above-mentioned problems, and the problem to be solved is an eco-driving capable of supporting an economical and safe driving of a vehicle by allowing a driver to recognize his / her driving situation in real time. It is to provide a support device, a car navigation system, and an eco-drive support program.

  Hereinafter, each means suitable for solving the above-described problems will be described with additional effects and the like as necessary.

1. An eco-drive support device that supports driving of an economical and safe vehicle mounted on a vehicle,
GPS receiving means for receiving radio waves from GPS satellites and outputting positioning data at predetermined time intervals;
A display capable of screen display;
Warning condition determination means for determining whether or not a predetermined warning condition is met based on the positioning data from the GPS receiving means;
An eco-drive support device comprising: warning message display control means for displaying a warning message on the display based on a determination result by the warning condition determination means.

  According to the means 1, the GPS receiving means receives the radio wave from the GPS satellite and outputs the positioning data at predetermined time intervals, and the warning condition determining means determines the predetermined warning based on the positioning data from the GPS receiving means. It is determined whether or not the condition is met, and the warning message display control means displays a warning message on a display capable of screen display based on the determination result by the warning condition determination means. Therefore, it is possible to support economical and safe driving of the vehicle by causing the driver to visually recognize the warning message displayed on the display and call attention. In addition, since positioning data from the GPS receiving means is used, it is easier to attach and detach the device to / from the vehicle than to obtain speed information from the vehicle, and it can be mounted on any vehicle. is there.

2. The warning condition determination means determines whether or not a predetermined warning condition is satisfied with respect to at least one item of overspeed, idling, rapid acceleration, and rapid deceleration,
2. The eco-drive support device according to claim 1, wherein the warning message display control means displays a warning message regarding the item on the display based on the determination result of the item by the warning condition determination means.

  According to the means 2, the warning condition determination means determines whether or not a predetermined warning condition is satisfied with respect to at least one item of overspeed, idling, rapid acceleration and rapid deceleration, and the warning message display control means includes: Since the warning message regarding the item is displayed on the display based on the determination result of the item by the warning condition determination means, the driver can visually recognize the warning message of the item displayed on the display and call attention. Economical and safe driving of the vehicle can be supported.

3. The warning condition determining means determines whether or not a predetermined warning condition is satisfied for all items of overspeed, idling, rapid acceleration and rapid deceleration,
3. The eco-drive support device according to claim 2, wherein the warning message display control means displays a warning message corresponding to each item on the display based on a determination result by the warning condition determination means.

  According to the means 3, the notification condition determination means determines whether or not a predetermined warning condition is satisfied for all items of overspeed, idling, rapid acceleration and rapid deceleration, and the warning message display control means Based on the determination result by the condition determination means, a warning message corresponding to each item is displayed on the display, so that the driver can visually recognize the warning message of each item displayed on the display and call attention. It is possible to reliably support economical and safe driving of the vehicle.

  4). The eco-drive support device according to any one of means 1 to 3, further comprising warning sound generating means for generating a warning sound in association with display of a warning message on the display.

  According to the means 4, the warning sound generating means generates a warning sound in relation to the display of the warning message on the display, so that the warning message is displayed on the display by alerting the driver with the warning sound. Can be visually recognized.

  5. Any of means 1 to 4 further comprising a notice device for notifying that the warning condition is approached when the predetermined warning condition is not met and the predetermined warning notice condition is met. Eco drive support device as described in Crab.

  According to the means 5, the notice notifying means notifies that the warning condition is approached when the warning condition is not met and the warning condition is met, so that the driver satisfies the warning condition. It is possible to take measures such as reducing the speed before reaching the vehicle, and it is possible to prevent driving that satisfies the warning condition in advance, thereby facilitating economical and safe driving of the vehicle.

6). The positioning data from the GPS receiving means includes altitude data,
Any of the means 1 to 5, wherein the warning message display control means displays a warning message prompting the use of the engine brake on the display when the decrease in altitude for a certain moving distance is a predetermined value or more. Eco drive support device as described in Crab.

  According to the means 6, the positioning data from the GPS receiving means includes altitude data, and the warning message display control means displays the engine brake on the display when the decrease in altitude for a certain moving distance is a predetermined value or more. Since the warning message for prompting use is displayed, it is possible to support economical and safe driving of the vehicle by prompting the driver to use the engine brake on a long steep downhill or the like.

  7). The eco-drive support device according to any one of means 1 to 6, further comprising a caution message display control means for displaying a caution message on a caution point before starting operation immediately after the apparatus is started on the display.

  According to the means 7, the caution message display control means causes the caution message regarding the cautions before the start of driving to be displayed on the display immediately after the device is started, so that the driver takes a predetermined action according to the caution message displayed on the display. This makes it possible to drive the vehicle more economically and safely. The caution message is, for example, a message related to tire pressure check, unnecessary baggage confirmation, or air conditioner setting.

8). Traveling history storage means for storing a history of traveling conditions based on the positioning data from the GPS receiving means;
The eco-drive support device according to any one of means 1 to 7, further comprising: an evaluation unit that evaluates an eco-drive based on a history of travel conditions stored in the travel history storage unit.

  According to the means 8, the travel history storage means stores the travel situation history based on the positioning data from the GPS receiving means, and the evaluation means ecologically stores the travel situation history stored in the travel history storage means. Evaluate the drive. Therefore, by giving the driver an evaluation of eco-driving based on the travel situation history, it is possible to support economical and safe driving of the vehicle.

9. The travel history storage means stores the accumulated time of overspeed exceeding the speed threshold, the accumulated idling time, the number of sudden accelerations where the acceleration exceeds the sudden acceleration threshold, and the number of sudden decelerations where the acceleration falls below the sudden deceleration threshold. And
The evaluation means evaluates the eco-drive based on the accumulated speed excess time, the accumulated idling time, the number of sudden accelerations and the number of sudden decelerations stored in the traveling history storage means. Eco-drive support device described in 1.

  According to the means 9, the travel history storage means is a rapid deceleration that the speed exceeds the speed threshold, the total idling time, the number of times that the acceleration exceeds the sudden acceleration threshold, and the acceleration that falls below the sudden deceleration threshold. Since the evaluation means evaluates the eco-drive based on the accumulated speed excess time, the accumulated idling time, the number of sudden accelerations and the number of sudden decelerations stored in the traveling history storage means, Reliable evaluation can be obtained regarding economy and safety.

  10. The eco-drive support device according to claim 9, wherein when the state where the speed is less than a predetermined value continues for a certain time or more, the idling time is recognized, and the total of each idling time is stored in the travel history storage means.

  According to the means 10, when the state where the speed is less than the predetermined value continues for a certain time or more, it is recognized as the idling time, and the total of each idling time is stored in the travel history storage means. Can be excluded from the idling time, and the total of only the long idling time that greatly affects the economics of driving can be used for the evaluation of eco-driving.

  11. In the means 9 characterized in that the evaluation means determines sudden acceleration using a value obtained by multiplying the acceleration by a predetermined coefficient less than 1 within a certain period of time after the speed becomes a predetermined value or more. The eco-drive support device described.

  According to the means 11, the evaluation means makes a sudden acceleration determination using a value obtained by multiplying the acceleration by a predetermined coefficient less than 1 within a certain period of time after the speed becomes a predetermined value or more. Taking into account the characteristics of the GPS receiving means that is likely to come out at a low speed immediately after the start of running from the state, it is possible to perform a more accurate determination of sudden acceleration.

  12 The evaluation means determines sudden acceleration and sudden deceleration using a value obtained by multiplying the sudden acceleration threshold and the sudden deceleration threshold by a coefficient that decreases as the speed increases. The eco-drive support device according to means 9.

  According to the means 12, the evaluation means determines sudden acceleration and sudden deceleration using a value obtained by multiplying the sudden acceleration threshold and the sudden deceleration threshold by a coefficient that decreases as the speed increases. Therefore, it is possible to perform more accurate determination of sudden acceleration and sudden deceleration in consideration of the point that acceleration becomes difficult to occur due to the gear ratio and air resistance as the speed increases.

  13. The eco-drive support apparatus according to any one of means 8 to 12, wherein the evaluation means has two or more evaluation criteria according to the proficiency level of eco-drive.

  According to the means 13, since the evaluation means has two or more evaluation criteria according to the proficiency level of the eco-driving, for example, the evaluation criteria for beginners of the eco-driving is first used to improve the proficiency level. By changing to evaluation criteria for experts, you can familiarize yourself with eco-driving step by step.

  14 The graph display control means which displays the graph showing the present driving condition on the display based on the positioning data from the GPS receiving means is further provided. Eco-drive support device.

  According to the means 14, the graph display control means displays a graph representing the current traveling state on a display capable of screen display based on the positioning data from the GPS receiving means. Therefore, it is possible to support the driving of the vehicle economically and safely by allowing the driver to visually recognize the graph indicating the current driving situation displayed on the display and to recognize the driving condition specifically and in real time. .

15. Travel history storage means for storing a history of travel conditions based on the positioning data from the GPS receiving means;
15. The eco according to claim 14, wherein the graph display control means displays a travel history graph for a predetermined time immediately before on the display based on a travel situation history stored in the travel history storage means. Drive support device.

  According to the means 15, the travel history storage means stores the travel situation history based on the positioning data from the GPS receiving means, and the graph display control means is based on the travel situation history stored in the travel history storage means. The driving history graph for the immediately preceding predetermined time is displayed on the display, so that the driver can recognize the driving situation history for the immediately preceding predetermined time specifically and in real time, so that an economical and safe vehicle Can support driving.

  16. The graph display control means causes the display to display at least one of a speed history graph representing a speed history for the immediately preceding predetermined time and an acceleration history graph representing an acceleration history as the travel history graph. Eco-drive support device described in 1.

  According to the means 16, the graph display control means displays at least one of the speed history graph representing the speed history for the immediately preceding predetermined time and the acceleration history graph representing the acceleration history as the travel history graph on the display. In this way, at least one of a speed history and an acceleration history for a predetermined time immediately before is specifically and real-time recognized, so that economical and safe driving of the vehicle can be supported.

  17. The eco-drive support device according to claim 16, wherein the graph display control means displays the speed history graph and the acceleration history graph simultaneously and at the same time coordinate.

  According to the means 17, the graph display control means displays the speed history graph and the acceleration history graph at the same time and at the same time coordinate, so that the relationship between the speed change and the acceleration and deceleration can be easily recognized. .

  18. The eco-drive support device according to any one of means 15 to 17, wherein the graph display control means displays the travel history graph on the display when the current speed is less than a predetermined value.

  According to the means 18, when the current speed is less than the predetermined value, the graph display control means displays the travel history graph on the display, so that the driver can display the display on the display between driving such as when the signal is stopped. The traveling history graph can be visually confirmed with certainty.

  19. The eco-drive support according to claim 18, wherein the graph display control means switches the graph display on the display to an indicator representing the current speed and / or acceleration when the current speed is a predetermined value or more. apparatus.

  According to the means 19, the graph display control means switches the graph display on the display to an indicator representing the current speed and / or acceleration when the current speed is a predetermined value or more, so that the driver can The current speed and / or acceleration can be easily grasped by an indicator on the display.

  20. 15. The eco-drive support device according to claim 14, wherein the graph display control means displays an indicator indicating a current speed and / or acceleration on the display.

  According to the means 20, the graph display control means displays an indicator indicating the current speed and / or acceleration on the display, so that the driver can easily grasp the current speed and / or acceleration by the indicator on the display. Can do.

21. A travel history storage means for storing a history of travel status based on the positioning data from the GPS receiving means;
Based on the positioning data from the GPS receiving means, the graph display control means displays an indicator representing the current speed and an indicator representing the current acceleration on the display when the current speed is a predetermined value or more. On the other hand, when the current speed is less than the predetermined value, the speed history graph and the acceleration history representing the speed history for the immediately preceding predetermined time are represented based on the history of the driving situation stored in the driving history storage means. 15. The eco-drive support device according to claim 14, wherein an acceleration history graph is displayed on the display.

  According to the means 21, the GPS receiving means receives the radio wave from the GPS satellite and outputs the positioning data at a predetermined time interval, and the traveling history storage means records the traveling situation history based on the positioning data from the GPS receiving means. Remember. Then, when the current speed is equal to or higher than the predetermined value based on the positioning data from the GPS receiving means, the graph display control means causes the display indicating an indicator indicating the current speed and an indicator indicating the current acceleration. While driving, the current speed and acceleration can be easily grasped by the indicator on the display. On the other hand, when the current speed is less than the predetermined value, the graph display control unit is configured to display a speed history graph and an acceleration representing a speed history for the immediately preceding predetermined time based on the travel status history stored in the travel history storage unit. Since the acceleration history graph representing the history is displayed on the display, it is possible to make the driver recognize the speed history and acceleration history for a predetermined time period in a specific manner in real time between driving such as when waiting for a signal. it can. Therefore, by allowing the driver to recognize the current speed and acceleration and the speed history and acceleration history for the immediately preceding predetermined time specifically and in real time, it is possible to support economical and safe driving of the vehicle. In addition, since positioning data from the GPS receiving means is used, it is easier to attach and detach the device to / from the vehicle than to obtain speed information from the vehicle, and it can be mounted on any vehicle. is there.

  22. The graph display control means changes the height of the block of each indicator according to the current speed / acceleration value, and changes the color of each indicator according to the current speed / acceleration band. The eco-drive support device according to means 21, wherein the eco-drive support device is displayed.

  According to the means 22, the graph display control means changes the height of the block of each indicator according to the current numerical value of the speed / acceleration and displays the color of each indicator according to the current speed / acceleration band. Therefore, the driver can instantly determine whether the vehicle is traveling at the economic speed / acceleration without looking at the scale of the speed meter.

  23. A car navigation system comprising the eco-drive support device according to any one of means 1 to 22.

  According to the means 23, since the car navigation system includes the eco-drive support device, it is possible to support not only road guidance using map information but also economical and safe driving of the vehicle. In addition, since the car navigation system includes a GPS receiving unit and a display capable of displaying a screen, the car navigation system can be configured to be used as an eco-drive support device without making a major change.

24. Computers to help you drive economically and safely,
Warning condition determination means for determining whether or not a predetermined warning condition is met based on the positioning data from a GPS receiver that receives radio waves from GPS satellites and outputs positioning data including speed at predetermined time intervals And warning message display control means for displaying a warning message on the display based on the determination result by the warning condition determination means,
Eco-driving support program to function as

  According to the means 24, a GPS receiver that receives radio waves from GPS satellites and outputs positioning data including speed at predetermined time intervals by a computer executing an eco-drive support program functioning as warning condition determination means. Based on the positioning data from, it is determined whether or not a predetermined warning condition is met, and further by functioning as a warning message display control means, a warning message is displayed on the display based on the determination result by the warning condition determination means. Display. Therefore, it is possible to support economical and safe driving of the vehicle by causing the driver to visually recognize the warning message displayed on the display and call attention.

25. Said computer further
A travel history storage means for storing a history of travel conditions based on positioning data from the GPS receiver, and an evaluation means for evaluating an eco-drive based on the history of travel conditions stored in the travel history storage means;
The eco-driving support program according to means 24, wherein the eco-drive support program is made to function as:

  According to the means 25, the computer stores the history of the driving situation based on the positioning data from the GPS receiver by functioning as the driving history storage means, and stores in the driving history storage means by functioning as the evaluation means. The eco-driving is evaluated based on the history of the driving conditions. Therefore, by giving the driver an evaluation of eco-driving based on the travel situation history, it is possible to support economical and safe driving of the vehicle.

26. Said computer further
Graph display control means for displaying on the display a graph representing the current driving situation based on the positioning data from the GPS receiver,
The eco-driving support program according to means 24 or 25, wherein

  According to the means 26, the computer that executes the eco-driving support program functions as a graph display control means, so that a graph representing the current driving situation is displayed on the display based on the positioning data from the GPS receiver. Therefore, it is possible to support the driving of the vehicle economically and safely by allowing the driver to visually recognize the graph indicating the current driving situation displayed on the display and to recognize the driving condition specifically and in real time. .

  ADVANTAGE OF THE INVENTION According to this invention, a driver | operator can be supported economically and safely by making a driver | operator visually recognize and alert a warning message displayed on the display. In addition, since positioning data from the GPS receiving means is used, it is easier to attach and detach the device to / from the vehicle than to obtain speed information from the vehicle, and it can be mounted on any vehicle. is there.

  Hereinafter, an embodiment of an eco-drive support device of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of the eco-drive support device 1 of the present embodiment. FIG. 2 is a plan view showing the appearance of the eco-drive support device 1. In the present specification, the term “eco-driving” is used to mean driving of a vehicle that is economical and safe and environmentally friendly.

  As shown in FIGS. 1 and 2, the eco-drive support device 1 includes a portable information terminal 10 and a GPS (global positioning system) receiver 30 attached to the portable information terminal 10. The eco-drive support device 1 is mounted in the vicinity of a driver's seat of a vehicle so that a screen display of a touch panel type liquid crystal display 15 to be described later can be easily seen by the driver, and is connected to the vehicle via a battery or a power cord built in the portable information terminal 10. It is connected to the cigarette lighter plug and operates by supplying power from the in-vehicle battery.

  The portable information terminal 10 is a portable computer and is a personal information terminal device generally referred to as PDA (Personal digital assistants). As shown in FIG. 1, the portable information terminal 10 includes a CPU 11, a ROM 12, a flash ROM 13, a RAM 14, a touch panel type liquid crystal display 15, a plurality of input buttons 16, an alarm generation unit 17, a communication port 18, and the like. It is configured with.

  The CPU 11 is a central processing unit that reads out a control program (including an eco-drive support program 14a described later) from the ROM 12 or the flash ROM 14, performs various arithmetic processes, and controls each component. The ROM 12 is a read-only memory that stores a control program for operating the portable information terminal 10 and various data. The RAM 13 is a readable / writable memory used as a work area when the control program is executed by the CPU 11. The flash ROM 14 is a rewritable nonvolatile memory that stores application programs and various data. Note that an eco-drive support program 14a and an operation data file 14b described later are stored in the flash ROM 14.

  The touch panel type liquid crystal display 15 is formed by laminating a transparent touch panel on a color liquid crystal display, and is capable of displaying a screen in color. In addition, an input operation corresponding to the screen display can be performed by touching the surface with the tip of a finger or a pen-shaped stick. It is a known apparatus capable of performing the above. The input button 16 is a button for performing various input operations. The communication port 17 is a port for the CPU 11 to acquire positioning data output from the GPS receiver 30, and a communication buffer is provided.

  The GPS receiver 30 includes a reception antenna 31 and a reception circuit 32, and the reception circuit 32 outputs positioning data based on reception of radio waves from the GPS satellite 50 by the reception antenna 31. The positioning data includes satellite information reception status, position information (latitude and longitude), moving speed (unit: knots), moving direction (unit: radians), altitude (unit: m), and GPS time. The GPS receiver 30 is electrically connected by being mounted in a memory card slot (not shown) provided on the back surface of the portable information terminal 10, and positioning data output from the GPS receiver 30 is input to the portable information terminal 10. Is done.

  Next, the flow of processing executed in the eco-drive support device 1 will be described based on screen display examples shown in FIGS. 3 to 9 and flowcharts shown in FIGS. 10 to 17. First, when an icon (not shown) of the eco-drive support program 14a is clicked on the screen of the touch panel type liquid crystal display 15 provided in the portable information terminal 10, the eco-drive support program 14a is started and the main routine shown in FIG. The execution of is started.

  First, initialization processing is performed (step 1. Hereinafter, step 1 is abbreviated as S1. The other steps are also the same), and then, a transition is made to a new / continuous selection mode for selecting a new operation or a continuous operation. (S2), as shown in FIG. 3, a confirmation message “Are you sure you want to measure a new trip? Are you sure?” And “Yes” and “No” buttons are displayed on the screen (S3). If “Yes” is clicked in S3, the process proceeds to S5. On the other hand, if “NO” is selected in S3, the previous operation data is read from the flash ROM 13 (S4), and then the process proceeds to S5.

  In S5, input screen processing is executed. In the input screen process, an input screen 150 shown in FIG. 4 is displayed on the touch panel type liquid crystal display 15, and each input item can be selected. The input screen 150 includes a date display unit 1501, a fuel supply display unit 1502, a vehicle name display unit 1503, a driver display unit 1504, an evaluation mode display unit 1505, a warning notice check box 1506, a registration button 1507, a return button 1508, and an evaluation button. 1509 and a log deletion button 1510 are displayed, and a vehicle name, a driver, an evaluation mode, and whether to perform a warning notice alarm can be selected.

  The vehicle name is selected by clicking the inverted triangle mark at the right end of the vehicle name display portion 1503 to display a pull-down list of vehicle names and clicking on any vehicle name in this state. The vehicle name selected in this way is displayed on the vehicle name display unit 1503. The driver is selected by clicking the inverted triangle mark at the right end of the driver display unit 1504 to display a pull-down list of drivers and clicking any driver name in this state. The driver thus selected is displayed on the driver display unit 1504. The selection of the evaluation mode is performed by clicking the inverted triangle mark on the right end of the evaluation mode display section 1505 to pull down “Eco-Beginner” and “Veteran” and clicking either mode in this state. The evaluation mode selected in this way is displayed on the evaluation mode display unit 1505.

  Here, “eco-beginner” is an eco-drive determination mode for eco-drive beginners, while “expert” is an eco-drive determination mode for eco-drive experts. In “experienced”, the determination reference value of each item is set so that the eco-drive determination is stricter than “eco-beginner”. FIG. 18 is a table showing the criterion values for each item for eco beginners and veterans.

  Next, it is determined which button on the input screen 150 has been clicked (S6). If there is a click, the process proceeds to each step corresponding to the clicked button, and if there is no click, the process returns to S5.

  When the evaluation button 1507 is clicked in S6, the process proceeds to an operation diagnosis screen process in S17 described later. When the log deletion button 1508 is clicked, the GPS log file including the data received from the GPS receiver 30 is deleted (S7), and the process returns to S5. When the return button 1506 is clicked, the process proceeds to a main screen process of S9 described later. When the registration button 1506 is clicked, input data registration processing is executed (S8). In the registration process of S8, the vehicle name, the driver, and the evaluation mode are registered, and the presence / absence of a warning notice alarm is set. Thereafter, the process proceeds to the main screen process of S9.

  In the main screen process of FIG. S9 (FIG. 11), the main screen 151 is displayed on the touch panel type liquid crystal display 15. Here, FIG. 5A shows the configuration of the main screen 151 when stopped (current speed <4 km / h), and FIG. 5B shows the configuration of the main screen 151 when running (current speed ≧ 4 km / h). FIG. 6A shows a display example of the initial screen of the main screen 151, FIG. 6B shows a display example of the traveling screen, and FIG. 6C shows a display example of the stopped screen. As shown in FIG. 5A, the main screen 151 includes a speed graph panel 1511, an acceleration graph panel 1512, a speed display unit 1513, an altitude display unit 1514, a general road / highway display switching button 1515, an elapsed time display unit. 1516, moving distance display unit 1517, overspeed display unit 1518, idle time display unit 1519, rapid acceleration number display unit 1520, rapid deceleration number display unit 1521, direction graph panel 1522, acceleration display unit 1523, start button 1524, input A button 1525 and an end button 1526 are displayed.

  The speed scale in the speed graph panel 1511 is displayed according to the selection state of the general road / highway display switching button 1515. That is, when a general road is selected with the general road / highway display switching button 1515, the maximum value is displayed at 80 Km / h and the center line is 40 Km / h, and when a highway is selected, the maximum value is 120 Km. / H, the center line is 60 km / h. The mode switching between the general road and the highway is performed by the driver clicking the general road / highway display switching button 1515 as the road changes.

  Next, it is determined which button is clicked on the main screen 151 (S10). If there is a click (S: Yes), the process proceeds to each step corresponding to the clicked button, and if there is no click, S9. Return to.

  When the start button 1524 is clicked in S10, the communication port 18 is opened and reception of GPS data is started (S11). Thereafter, every time GPS data is written from the GPS receiver 30 to the communication buffer of the communication port 18 every second, the operation state display / determination routine shown in FIG. 12 is executed.

  In the operation state display / determination routine, as shown in FIG. 12, first, the communication buffer is read (S101). Subsequently, the GPS positioning data read from the communication buffer is analyzed (S102). That is, based on GPS positioning data, speed / acceleration, reception state / direction / elevation, travel distance / elapsed time, overspeed time / idle time, sudden acceleration / deceleration times are analyzed, and operation state data is updated. Do.

  Specifically, in the GPS data analysis routine of FIG. 13, first, the current speed (km / h) is calculated from the moving speed (unit: knots) of the GPS positioning data (S201). Further, the current acceleration (km / h / s) is calculated based on the change in the current speed (S202). Further, based on the GPS positioning data, the satellite reception state / azimuth / elevation is updated (S203), and the moving distance / elapsed time is updated (S204). Next, it is determined whether or not the current speed exceeds the speed threshold (S205). If not exceeded (S205: No), the speed overtime timer is stopped and the count value is added to the speed overtime. After resetting the count value (S206), the process proceeds to S209. If the current speed exceeds the speed threshold (S205: Yes), it is determined whether or not the speed excess timer is on (S207). If not (S207: No), the speed excess timer is set. After turning on (S208), the process proceeds to S209. On the other hand, when the overspeed timer is on (S207: Yes), the process proceeds to S209.

  Next, it is determined whether the current speed is less than 4 km / h (S209), and if it is 4 km / h or more (that is, traveling) (S209: No), the idling timer count is stopped and the count value is Only when it is 3 minutes or longer, it is added to the idling time, the count value is reset (S210), and the process proceeds to S213. When the current speed is less than 4 km / h (that is, when the vehicle is stopped) (S209: Yes), it is determined whether or not the idling timer is on (S211), and when it is not on (S211: No), After the idling timer is turned on (S212), the process proceeds to S213. On the other hand, when the idling timer is on (S211: Yes), the process proceeds to S213.

  Subsequently, it is determined whether or not the current acceleration is equal to or greater than the rapid acceleration threshold (S213). If the acceleration is equal to or greater than the rapid acceleration threshold (S213: Yes), the number of rapid accelerations is updated by 1 (S214), and then S215. Proceed to When the current acceleration is less than the rapid acceleration threshold (S213: No), the process proceeds to S215. Similarly, it is determined whether or not the current acceleration is equal to or less than the rapid deceleration threshold (S215). If the acceleration is equal to or less than the rapid deceleration threshold (S215: Yes), the number of rapid deceleration is increased by 1 and updated (S216), and then the return. To do. If the current acceleration is larger than the rapid deceleration threshold (S215: No), the process returns.

  Next, the operation state data is displayed on the main screen 151 using the analysis result of the GPS data in S102 (S103). Specifically, speed, elapsed time, travel distance, altitude, overspeed time, idle time, number of sudden accelerations, number of sudden decelerations are displayed.

  Subsequently, an operation state graph display process is performed (S104 to S108). First, it is determined whether or not the current speed is 4 km / h or more (S104). When the current speed is 4 km / h or more (S104: Yes), as shown in FIG. 5B, the left half of the speed graph panel 1511 is a speed indicator panel 1531 and the current speed is displayed as an indicator (S105). . The height of the block varies depending on the numerical value. Further, the remaining almost right half of the speed graph panel 1511 is used as an acceleration indicator panel 1532, and the current acceleration is displayed as an indicator (S106).

  It should be noted that the speed indicator panel 1531 and the acceleration indicator panel 1532 display different indicator colors depending on the speed / acceleration band. In the speed indicator panel 1531, for example, less than 30 km / h: light blue, 30 km / h to speed determination reference value −5 km / h: blue, speed determination reference value −5 km / h to less than speed determination reference value: yellow, speed determination Reference value to speed determination reference value + 10 km / h or less: Orange, and when the speed determination reference value + 10 km / h is exceeded: Indicators are displayed in red. On the other hand, in the acceleration indicator panel 1532, for example, less than 3 km / h / s or a rapid acceleration determination reference value less than −3 km / h / s: green, sudden acceleration determination reference value−3 km / h / s to sudden acceleration determination reference value− Less than 1 km / h / s: yellow, sudden acceleration judgment reference value -1 km / h / s to sudden acceleration judgment reference value or less: orange, when exceeding the sudden acceleration judgment reference value: red, an indicator is displayed in each color . By performing such display, it is possible to instantly determine whether the driver is traveling at economic speed / acceleration without looking at the scale of the speed meter.

  If the current speed is less than 4 km / h in S104 (S104: No), a speed history graph for 3 minutes is displayed on the speed graph panel 1511 with reference to the operation data stored in the flash ROM (S107). Here, the speed history graph represents the speed history for the last three minutes as a vertical bar graph every second. In addition, when the speed is 4 km / h or higher, the speed history graph displays a vertical bar graph of a length proportional to the speed in blue, and when the speed is less than 4 km / h, the vertical history has a length corresponding to 4 km / h. The bar graph is displayed in black. Different display of blue and black makes it easy to determine whether the vehicle is running or stopped.

  Next, a 3-minute acceleration history graph is displayed on the acceleration graph panel 1512 with reference to operation data (S108). Here, the acceleration history graph represents the acceleration history for the last three minutes as a vertical bar graph every second. The three-minute history graph of speed and acceleration is displayed when driving on a general road, because there is a high frequency of stoppage due to red lights, so a series of movements from start to constant speed, deceleration, and stop This is so that it can be confirmed as a flow. In addition, since the speed graph panel 1511 and the acceleration graph panel 1512 arranged in the vertical direction have the same time coordinate in the horizontal direction, the relationship between the speed fluctuation and the acceleration / deceleration can be easily grasped. In addition, since the time axis of the graph is represented by a vertical bar graph every second, it is possible to visually understand how much the vehicle is rising and falling at the start acceleration and deceleration brakes.

  Subsequently, the current moving direction is displayed in a graph on the direction graph panel 1522 (S109). In addition, as for circular direction graph panel 1522, the uppermost part represents the north. Therefore, the rightmost part represents west, the lowermost part represents south, and the leftmost part represents east.

  Next, an eco-drive determination process is executed (S110). In the eco-drive determination process, as shown in the flowcharts of FIGS. 14 to 15, first, it is determined whether or not the relationship of current speed> speed threshold is satisfied (S301). The speed threshold value is determined according to the determination reference value list of FIG. 18. For example, when the eco beginner is selected as the mode on the input screen 150 and the general road is selected on the main screen 151, the speed determination reference value is 60 km. / H is used as the speed threshold. When the current speed> the speed threshold (that is, overspeed) (S301: Yes), the overspeed flag is turned on (S302).

  Next, it is determined whether or not the count value of the idling timer is 3 minutes or more (S303). When the count value of the idling timer is 3 minutes or more (S303: Yes), the idling flag is turned on (S304).

  Next, it is determined whether the relationship of current acceleration ≧ rapid acceleration threshold is satisfied (S305). Here, it is assumed that sudden acceleration threshold = rapid acceleration determination reference value × {1− (current speed / 100) × 0.5} (the rapid acceleration determination reference value follows the determination reference value list of FIG. 18). The reason for changing the sudden acceleration threshold according to the current speed is to make a more accurate determination of sudden acceleration, taking into account that the acceleration becomes difficult to occur due to gear ratio and air resistance as the speed increases. Yes (same for sudden deceleration). However, the current acceleration × coefficient is compared with the rapid acceleration threshold within 3 seconds after the current speed becomes 4 km / h or more. Here, the coefficient is a value set according to the characteristics of the GPS receiver 30, and is set to 0.5 to 0.8, for example. This is because, depending on the characteristics of the GPS receiver, a numerical value lower than the actual speed may be output at the beginning of the speed, and then the speed suddenly increases to approach the actual speed from the low speed state. This is because there are cases where this occurs.

  If the current acceleration is equal to or greater than the rapid acceleration threshold value in S305 (S305: Yes), the rapid acceleration flag is turned on (S306). If current acceleration <rapid acceleration threshold (S305: No), it is determined whether or not the relationship of 3 km / h / s ≦ current acceleration <4 km / h / s is satisfied (S307). : Yes), the warning warning sound 1 flag is turned on (S308). If not applicable in S308 (S308: No), it is determined whether or not the relationship of 4 km / h / s ≦ current acceleration <rapid acceleration threshold value is satisfied (S309), and if applicable (S309: Yes), a warning is given. The warning sound 2 flag is turned on (S310).

  Next, it is determined whether the relationship of current acceleration ≦ rapid deceleration threshold is satisfied (S311). Here, sudden deceleration threshold = rapid deceleration determination reference value × {1− (current speed / 100) × 0.5} (the rapid deceleration determination reference value follows the determination reference value list of FIG. 18). If the current acceleration ≦ the rapid deceleration threshold (S311: Yes), the rapid deceleration flag is turned on (S312). If the current acceleration> the rapid deceleration threshold (S311: No), it is determined whether or not the relationship of −4 km / h / s <current acceleration ≦ −3 km / h / s is satisfied (S313). (S313: Yes), the warning warning sound 1 flag is turned on (S314), and the process proceeds to S317. If not applicable in S313 (S313: No), it is determined whether or not the relationship of sudden deceleration threshold <current acceleration ≦ −4 km / h / s is satisfied (S315), and if applicable (S315: Yes), The warning warning sound 2 flag is turned on (S316), and the process proceeds to S317. Next, it is determined whether or not the relationship of speed threshold value−5 km / h ≦ current speed <speed threshold value is satisfied (S317), and if applicable (S317: Yes), the warning warning sound 3 flag is turned on (S318). ), Return. If not applicable (S317: No), the process directly returns.

  Next, warning message display / alarm generation processing is performed (S111). Specifically, as shown in the flowchart of FIG. 16, when the overspeed flag is on (S401: Yes), the overspeed warning message: “Be careful with the speed, let's reduce the speed” (S402), The alarm generation unit 17 generates a warning sound B (S403) and returns. In order to make it easier for the driver to know that the warning message has been displayed, the display characters are blinked for 3 seconds after the warning message display is started, and then the characters are displayed without blinking for 3 seconds. Display for a total of 6 seconds (same for other warning messages). Also, a message timer count is used to display an overspeed warning message every 30 seconds while the overspeed state continues. However, if the current speed does not become 5 km / h lower than the speed excess determination speed, the message timer continues counting. This prevents the warning message “Warning about speed ...” from being displayed many times when the speed threshold is exceeded for a short time and the speed is exceeded again. After displaying the message, reset the timer count.

  When the idling flag is on (S404: Yes), an idling warning message: “Idling is wasting fuel. Let's turn off the engine” is displayed (S405), and the alarm generation unit 17 generates a warning sound A ( S403) and return. Further, an idling warning message is displayed every 30 seconds while the idling state continues using the timer count for messages. After displaying the message, reset the timer count.

  When the sudden acceleration flag is on (S406: Yes), a sudden acceleration warning message: “It is sudden acceleration. Use a lot of fuel. Let's accelerate slowly” (S407), and the alarm generator 17 warns you. A is generated (S403), and the process returns.

  When the sudden deceleration flag is on (S408: Yes), a sudden deceleration warning message: “Sudden braking is recommended. Take the distance between the cars and slow down slowly” (S409), and the alarm generator 17 generates a warning sound A. Generate (S403) and return.

  When the warning warning sound 1 flag is on (S410: Yes), the warning warning sound 1 is generated in the alarm generation unit 17 (S411). On the other hand, when the warning warning sound 2 flag is on (S412: Yes), the alarm generation unit 17 generates a warning warning sound 2 that is different from the warning warning sound 1 (S413). If the warning warning sound 3 flag is on (S414: Yes), the alarm generation unit 17 generates a warning warning sound 3 that is different from the warning warning sounds 1 and 2 (S415). However, if the warning notice check box 1506 is not checked on the input screen 150, an alarm is not generated in S411, S413, and S415. Thereafter, each flag of the warning message and warning warning sound is reset (S416). A warning warning sound for sudden acceleration and deceleration is generated every second, and a warning warning sound for speed is generated every three seconds. When the warning conditions are not met and the warning warning conditions are met, the warning warning sound is used to notify that the warning conditions have been approached, so the driver will reduce the speed before reaching the warning conditions. Therefore, it is possible to prevent the driving corresponding to the warning condition and to facilitate eco-driving.

  Here, FIG. 7 is a diagram showing a display example of a warning message on the main screen 151, (a) is a display example of an overspeed warning message, (b) is a display example of an idling warning message, and (c). Indicates a display example of a sudden acceleration warning message, and (d) shows a display example of a sudden deceleration warning message.

  Then, returning to the operation state display / determination routine of FIG. 12, the operation data is written to the flash ROM 14 (S112), and this routine ends. Thereafter, every time GPS positioning data is written from the GPS receiver 30 to the communication buffer of the GPS communication port 18 every second, the operation state display / determination routine is repeatedly executed.

  Returning to the flowchart of FIG. 11, when the input button 1525 is clicked in S10, the process proceeds to the input screen display in S5. When the end button 1526 is clicked in S10, the communication port 18 is closed and the operation data is stored in the flash ROM 14 (S14), and then the operation data summary file is read from the flash ROM 14 (S15), and the eco-drive operation diagnosis is performed. Is executed (S16).

  In the eco-drive operation diagnosis of S16, as shown in the flowchart of FIG. 17, first, ranks A to E are obtained for each item of rapid acceleration, rapid deceleration, idling, and overspeed (S501). FIG. 19 shows an example of a rank determination table for determining the rank of each item. Next, an eco-driving degree score is calculated based on the rank determination result of each item (S502). The score of the eco-driving degree is calculated by a deduction method, for example, with a perfect score of 100 points, A: no deduction points, B: -10 points, C: -15 points, D: -20 points, E: -25 points . Then, based on the score calculation result of the eco-driving degree, the overall rank of A to E is determined (S503). The overall rank of the eco-driving degree is, for example, A: 80 points or more, B: 60 points or more and less than 80 points, C: 40 points or more and less than 60 points, D: 20 points or more and less than 40 points, E: 0 points or more and 20 points Judge as less than. Subsequently, an eco-driving degree message to be displayed on the operation diagnosis screen 154 is determined (S504). FIG. 20 is a list showing eco-drive degree messages for each item and each rank. The eco-driving degree message is displayed with priority on the message of the item with the lowest rank. Further, when ranks are the same for a plurality of items, for example, the priority is set in the order of overspeed, rapid deceleration, rapid acceleration, and idling.

  Next, returning to the flowchart of FIG. 11, the operation diagnosis screen 154 is displayed with reference to the operation data for displaying the operation diagnosis list created in the eco-drive operation diagnosis of S16 (S17). As shown in FIG. 8, the operation diagnosis screen 154 includes a diagnosis result list display unit 1541, an eco-drive degree display unit 1542, an operation time display unit 1543, an overspeed display unit 1544, an idling time display unit 1545, and the number of rapid accelerations. Display unit 1546, rapid deceleration number display unit 1547, and diagnostic comment display unit 1548 are each displayed on the screen. The diagnosis result list display unit 1541 displays a list of all the operation data read from the operation data totaling file, and the latest operation data is highlighted in the bottom row. Each operation data includes a start date and time, an end time, a driver, a distance, and a determination result (rank). The eco-driving degree display unit 1542 displays the rank, score, and description of the eco-driving degree of the current operation data highlighted in the diagnosis result list display unit 1541. FIG. 9A is a display example of the operation diagnosis screen 154, and FIG. 9B is another display example.

  When other operation data is clicked in the diagnosis result list display unit 1541, the eco-drive degree display unit 1542, the operation result data display unit 1543, and the diagnosis comment display unit 1544 correspond to the operation data selected by the click. Operation result data such as eco-driving degree, overspeed time, and diagnostic comments are displayed.

  Next, it is determined whether or not the end button 1549 has been clicked (S18). If the end button 1549 is clicked (S18: Yes), the execution of the eco-drive support program 14a is ended, and otherwise ( S18: No), it returns to S17.

  Note that data determined to be abnormal values due to the accuracy of the GPS receiver 30 is not used for determination. Specifically, (1) If three or more satellite radio waves cannot be acquired, the positioning is not performed, and the correct speed cannot be measured. Therefore, the screen update and the warning determination are not performed in the unpositioned state. (2) In order to determine the stop / idling state because a speed of about 2-3 km / h may be detected even when the vehicle is completely stopped due to a GPS error when the radio wave condition is poor. First, the slight speed generated by the GPS error is removed, and the stop state is determined. (3) Abnormal speed changes occur due to building reflections of satellite radio waves, etc., and may suddenly change to sudden acceleration / deceleration thresholds. Acceleration / deceleration data of 0.0 km / h / s or higher is not used for determination of sudden acceleration / deceleration. (4) The speed change acquired from the GPS receiver 30 may be delayed due to the state of the satellite radio wave or the characteristics of the GPS speed calculation logic, or may appear as an acceleration that is abrupt. Judgment is made by moving average value for 3 seconds. (5) The GPS speed when changing from the non-positioned state to the positioning state, such as after exiting the tunnel, suddenly becomes the actual traveling speed from 0 km / h, and it may be judged as sudden acceleration / deceleration. Therefore, the GPS speed when changing from the unpositioned state to the positioning state uses the speed when the positioning state is entered as the initial value, and the acceleration due to the speed change at that time is treated as 0 Km / h / s.

  As is clear from the above detailed description, according to the eco-drive support device 1 of the present embodiment, the GPS receiver 30 receives radio waves from the GPS satellite 50 and outputs positioning data at intervals of 1 second. The CPU 11 causes the touch panel type liquid crystal display 15 to display a graph representing the current traveling state based on the positioning data from the GPS receiver 30 by executing the eco-drive support program 14a. Therefore, the driver is allowed to visually recognize the current driving situation displayed on the touch panel type liquid crystal display 15 and to recognize the driving situation specifically and in real time, thereby supporting economical and safe driving of the vehicle. can do. In addition, since positioning data from the GPS receiver 30 is used, it is easier to install and remove the device from the vehicle than to obtain speed information from the vehicle, and can be mounted on any vehicle. It is.

  In addition, the CPU 11 stores an operation data file 14b, which is a history of traveling conditions, in the flash ROM 14 based on the positioning data from the GPS receiver 30, and when the current speed is less than 4 km / h, Based on this, since the previous three-minute driving history graph (speed history graph and acceleration history graph) is displayed on the touch panel type liquid crystal display 15, while the vehicle is stopped such as waiting for a signal, The history (continuous changes in speed and acceleration) can be recognized specifically and in real time. Further, when the current speed is equal to or higher than a predetermined value (4 km / h), the graph display on the touch panel type liquid crystal display 15 is switched to an indicator representing the current speed and acceleration. And the acceleration can be easily grasped by the indicator.

  Further, based on the positioning data from the GPS receiver 30, it is determined whether or not the speed, acceleration, and idling time satisfy predetermined warning conditions, and a warning message is displayed on the touch panel type liquid crystal display 15 based on the determination result. Therefore, it is possible to support the driving of the vehicle economically and safely by making the driver visually recognize the warning message and call attention. In particular, since the alarm generation unit 17 generates a warning sound when a warning message is displayed on the touch panel type liquid crystal display 15, the warning message can be alerted to the driver and the warning message display can be surely seen. .

  Further, since the eco-drive evaluation is performed based on the travel situation history (operation data file 14b) stored in the flash ROM 14, it is economical by giving the driver the eco-drive evaluation based on the travel situation history. In addition, safe vehicle driving can be supported. In addition, since there are two-level evaluation standards (eco-beginner / experienced) according to the level of proficiency of eco-driving, for example, the evaluation standard for eco-driving beginners is used first, and for experts to improve the proficiency level By changing to the evaluation standard, eco-driving can be mastered step by step.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, when the vehicle is in a stopped state (when the current speed is less than 4 km / h), a message prompting to stop idling may be displayed for 10 seconds after 15 seconds from the stop. This is because if there is sufficient stoppage time during stoppage due to traffic lights, railroad crossings, etc., fuel consumption is greatly improved by stopping the engine (idling stop) or shifting the AT shift lever to the N range. For example, a message such as “idling stop (N range)” may be displayed.

  Further, the portable information terminal 10 may be configured to automatically turn off after a predetermined time when the battery power source is not used. According to this configuration, the power is automatically turned off after a predetermined time (for example, 1 minute) after the engine is stopped (ignition off), and when the engine is started again, the eco-drive support program screen is displayed and the operation is measured. Can be resumed.

  Further, in the above-described embodiment, the two-stage evaluation criteria of eco beginner and veteran are provided, but three levels of ranks of beginner, intermediate, and advanced may be provided. For example, in the beginner level, it is considered that a relatively high score is obtained for a driver who performs an average driving operation, and a low score is obtained for a driver who performs an abrupt driving operation. At the intermediate level, a relatively high score is given to a driver who can drive close to eco-driving to some extent, and a driver who performs an average driving operation also gets a low score. At the advanced level, a high score is given to a driver who can make an optimal eco-driving, and a high score is considered otherwise.

  In the above embodiment, the speed history graph is displayed only when the vehicle is stopped (less than 4 km / h). However, the speed history graph may be displayed even while the vehicle is traveling according to user settings.

  In the above embodiment, the current speed acquired from the GPS receiver 30 every second is displayed as a numerical value on the main screen 151. However, the travel distance is divided by the time obtained by combining both the travel time and the stop time. It may be possible to switch to the display of the total average speed obtained in this way or the average travel speed obtained by dividing the travel distance by the travel time.

  Also, if more than 1 hour has passed since the last time the engine (power) was turned off, the message “Warm-up operation is unnecessary. Let's leave early when safety is confirmed” should be displayed. May be. Although the water temperature drops after a while after the engine is turned off, in recent automobiles, it is almost unnecessary to perform warm-up operation, so it is possible to prevent waste of fuel by starting without performing warm-up operation. For example, a message is displayed for 10 seconds after 15 seconds in spring / summer autumn (March to October) and 30 seconds in winter (November-February). May not be displayed.

  In the above embodiment, when the decrease in altitude with respect to a certain moving distance (for example, 100 m) is a predetermined value (for example, 13 m) or more for the traveling distance for 10 seconds, the engine brake is applied to the touch panel type liquid crystal display 15. It may be configured to display a warning message prompting the use of. According to this configuration, it is possible to support economical and safe driving of the vehicle by encouraging the driver to use the engine brake on a long steep downhill or the like.

  Further, when the eco-drive support device 1 is activated, a point to be noted before starting driving may be displayed on the touch panel type liquid crystal display 15 as a caution message. According to this configuration, the driver can drive the vehicle more economically and safely by taking a predetermined action according to the caution message. This warning message may be displayed continuously until the [Confirm] or [OK] button is pressed in order to confirm that the driver has seen it. For example, (1) a message that prompts the user to check whether the tire air pressure is appropriate may be displayed. This is because when the tire air pressure is lowered, the fuel efficiency is deteriorated. Once the message is displayed, it will be displayed when 30 days or more have passed. (2) A message for confirming whether unnecessary packages are loaded may be displayed. This is because if you carry unnecessary luggage, the fuel economy will deteriorate. Once the message is displayed, it may be displayed next time when five days or more have elapsed. (3) In May-September, a message that calls attention to whether the air-conditioner setting is appropriate for eco-driving may be displayed. This is because the use of an air conditioner greatly affects fuel consumption, and it is preferable to set an appropriate temperature and air volume. Once the message is displayed, it will be displayed when 12 hours or more have passed.

  Moreover, it is good also as a structure which converts operation data and the result of eco-drive evaluation into two-dimensional barcodes, such as QR code, and displays on the screen of the touch-panel-type liquid crystal display 15. FIG. According to such a configuration, it is possible to acquire operation data and the like using only a screen interface without using a separate communication interface using a mobile phone or the like.

  Moreover, although the eco-drive support device of the present invention has been described as an example in which the GPS receiver 30 is connected to the portable information terminal 10 that is a PDA in the above embodiment, the present invention is not limited to this. For example, the eco-drive support device may be realized by configuring the existing car navigation system to execute the eco-drive support program 14a. In other words, since the car navigation system originally includes a GPS receiver and a display capable of displaying a screen, the car navigation system can function as an eco-drive support device without changing hardware. According to the car navigation system having the configuration of the eco-drive support device 1, it is possible to support not only road guidance based on map information but also economical and safe driving using a GPS receiver and a display. Is possible.

  In the embodiment, the eco-drive support program 14a is stored in advance in the flash ROM 14 of the portable information terminal 10, but the eco-drive support program 14a is recorded on a computer-readable recording medium such as a CD-ROM. It may be installed and executed on a desired vehicle-equipped computer having a GPS receiver and a display.

  The present invention is applicable to electronic devices such as a portable information terminal and a car navigation system equipped with a GPS receiver.

1 is a block diagram illustrating an overall configuration of an eco-drive support device according to an embodiment of the present invention. It is a top view which shows the external appearance of an eco-drive assistance apparatus. It is a figure which shows the example of a display of a confirmation message. It is explanatory drawing which shows the structure of an input screen. It is explanatory drawing which shows the structure of a main screen, (a) has shown the screen structure in the stop, (b) has shown the screen structure in driving | running | working. It is a figure which shows the example of a display of a main screen, (a) has shown the initial screen, (b) has shown the screen during driving | running | working, (c) has shown the screen which has stopped. It is a figure which shows the example of a display of the warning message in a main screen, (a) is a display example of an overspeed warning message, (b) is a display example of an idling warning message, (c) is a display example of a rapid acceleration warning message. (D) shows a display example of a sudden deceleration warning message. It is explanatory drawing which shows the structure of an operation diagnosis screen. (A) is a figure which shows one example of a display of an operation diagnosis screen, (b) is a figure which shows another example of a display. It is a flowchart which shows the main routine of an eco-drive assistance program. 11 is a flowchart showing a continuation of the main routine of FIG. It is a flowchart which shows an operation state display and determination routine. It is a flowchart which shows a GPS data analysis routine. It is a flowchart which shows an eco-drive determination processing routine. It is a flowchart which shows the continuation of the eco-drive determination processing routine of FIG. It is a flowchart which shows a warning message display / alarm generation routine. It is a flowchart which shows an eco-drive service diagnostic routine. It is a criterion value list which shows the criterion value of each item. It is a rank determination table | surface which shows the eco-drive degree rank of each item. It is a message list of eco-driving degree.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Eco-drive support device 10 Portable information terminal 11 CPU (Graph display control means, Warning message display control means, Evaluation means, Caution message display control means)
14 Flash ROM (travel history storage means)
14a Eco-drive support program 14b Operation data file (travel history)
15 Touch panel liquid crystal display (display)
17 Alarm generator (notification means)
30 GPS receiver (GPS receiving means)
50 GPS satellites

Claims (16)

An eco-drive support device that supports driving of an economical and safe vehicle mounted on a vehicle,
GPS receiving means for receiving radio waves from GPS satellites and outputting positioning data at predetermined time intervals;
A display capable of screen display;
Warning condition determination means for determining whether or not a predetermined warning condition is met based on the positioning data from the GPS receiving means;
An eco-drive support device comprising: warning message display control means for displaying a warning message on the display based on a determination result by the warning condition determination means. The warning condition determination means determines whether or not a predetermined warning condition is satisfied with respect to at least one item of overspeed, idling, rapid acceleration, and rapid deceleration,
The eco-drive support device according to claim 1, wherein the warning message display control unit displays a warning message regarding the item on the display based on a determination result of the item by the warning condition determination unit. The warning condition determining means determines whether or not a predetermined warning condition is satisfied for all items of overspeed, idling, rapid acceleration and rapid deceleration,
3. The eco-drive support device according to claim 2, wherein the warning message display control unit displays a warning message corresponding to each item on the display based on a determination result by the warning condition determination unit.   8. The eco-drive support device according to claim 1, further comprising warning sound generating means for generating a warning sound in association with display of a warning message on the display.   5. A notice device for notifying that a warning condition is approached when the predetermined warning condition is not met and the predetermined warning notice condition is met. The eco-drive support device according to any one of the above. The positioning data from the GPS receiving means includes altitude data,
The warning message display control means displays a warning message prompting the use of an engine brake on the display when the decrease in altitude for a certain moving distance is a predetermined value or more. The eco-drive support device according to any one of the above.   The eco-drive support device according to any one of claims 1 to 6, further comprising a caution message display control unit that causes the display to display a caution message about a caution point before starting driving immediately after the device is started. Traveling history storage means for storing a history of traveling conditions based on the positioning data from the GPS receiving means;
The eco-drive support device according to any one of claims 1 to 7, further comprising: an evaluation unit that evaluates an eco-drive based on a history of travel conditions stored in the travel history storage unit. The travel history storage means stores the accumulated time of overspeed exceeding the speed threshold, the accumulated idling time, the number of sudden accelerations where the acceleration exceeds the sudden acceleration threshold, and the number of sudden decelerations where the acceleration falls below the sudden deceleration threshold. And
The evaluation means evaluates an eco-drive based on a cumulative overspeed time, a total idling time, a number of sudden accelerations and a number of sudden decelerations stored in the travel history storage unit. The eco-drive support device according to 9.   The eco-driving support device according to claim 9, wherein when the state where the speed is less than a predetermined value continues for a certain time or more, the idling time is recognized, and a cumulative total of each idling time is stored in the travel history storage unit. .   10. The rapid acceleration determination is performed using the value obtained by multiplying the acceleration by a predetermined coefficient less than 1 within a predetermined time after the speed becomes equal to or higher than a predetermined value. Eco-drive support device described in 1.   The evaluation means performs determination of sudden acceleration and sudden deceleration using a value obtained by multiplying the sudden acceleration threshold and the sudden deceleration threshold by a coefficient that decreases as the speed increases. The eco-drive support device according to claim 9.   The eco-drive support device according to any one of claims 8 to 12, wherein the evaluation unit has two or more evaluation criteria according to the proficiency level of the eco-drive.   The graph display control means which displays the graph showing the present driving condition on the display based on the positioning data from the GPS receiving means is further provided. Eco-drive support device.   A car navigation system comprising the eco-drive support device according to any one of claims 1 to 14. Computers to help you drive economically and safely,
Warning condition determination means for determining whether or not a predetermined warning condition is met based on positioning data from a GPS receiver that receives radio waves from a GPS satellite and outputs positioning data at predetermined time intervals, and the warning Warning message display control means for displaying a warning message on the display based on the determination result by the condition determination means,
Eco-driving support program to function as

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