JP2010149668A - Vehicular display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular display device for accurately breaking down and analyzing a change of vehicle information and the adequacy/inadequacy of one's own driving operation in the past travel. <P>SOLUTION: The vehicular display device includes a display means 3 having first and second display areas, a storage medium 4 for storing travel information including at least vehicle information in a predetermined time, and a control means 2 for reading the travel information, and driving the display means 3 to display a vehicle information graph showing a change of the vehicle information on the first display area and display a travel track on the second display area. It also has a reproduction mode for reproducing the travel information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle display device mounted on a vehicle, and more particularly to a vehicle display device that displays changes in vehicle information in past travel.

  Conventionally, business vehicles such as trucks, taxis, and delivery vehicles are equipped with a storage medium such as a memory card that stores vehicle information such as vehicle position, speed, or engine speed that changes over time during travel. There is known a so-called tachograph, a vehicle operation information analysis apparatus that graphs or digitizes changes in vehicle information during past travel based on data stored in the storage medium and displays the graph on an external display device such as a personal computer ( For example, see Patent Document 1). Patent Document 1 discloses a function of displaying a map screen showing a travel location at a time indicated by a pointer superimposed on a graph display showing changes in vehicle information.

In recent years, with the growing awareness of environmental protection and energy saving, methods for supporting eco-driving with good fuel efficiency and consideration for the environment are being studied. As a specific method, there is a method of displaying vehicle information in a past run in a graph or numerical form on a vehicle display device mounted on a general vehicle, as in the above-described tachograph. Such a display is also a function suitable for analyzing and analyzing the state of the vehicle and the suitability of the driving operation in circuit driving.
JP 2001-43410 A

  However, to analyze and analyze the changes in vehicle information on the travel route and the suitability of the user's driving operation by looking at the graph or numerical values, the displayed graph and the like are collated with the memory of the user's travel route. There must be. Patent Document 1 discloses a method of displaying a map screen showing a travel location at a specified time in an overlapping manner. However, in this method, verification of changes in vehicle information and changes in the overall travel route or vehicle position is still used. There is room for further improvement as a function for analyzing and analyzing changes in vehicle information in the past driving and appropriateness of driving operation.

  The present invention has been made by paying attention to the above-described problems, and provides a vehicle display device that can accurately analyze and analyze changes in vehicle information in past driving and appropriateness of own driving operation. It is intended to provide.

  In order to solve the above problems, the present invention reads display means having first and second display areas, a storage medium that stores travel information including at least vehicle information during a predetermined time, and reads the travel information, Control means for displaying a vehicle information graph indicating a change in the vehicle information in a first display area and driving the display means to display a travel locus in the second display area. And

  In addition, a playback mode for playing back the travel information is provided, and the control means displays an instruction unit indicating a playback time point of the vehicle information graph in the first display area in the playback mode, and the second mode The display means is driven to display a vehicle position mark indicating a vehicle position on the travel locus at the time of reproduction in the display area.

  Further, the vehicle information includes vehicle position information, and the control means draws the travel locus based on the vehicle position information or displays the vehicle position mark.

  The present invention relates to a display device for a vehicle, and can accurately analyze and analyze changes in vehicle information in the past travel and appropriateness of own driving operation.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Embodiments in which the invention is applied to a vehicle display device that displays vehicle speed, engine speed, and the like will be described below with reference to the accompanying drawings.

  FIG. 1 shows a vehicular display device, which mainly includes a GPS receiver 1, a control means 2, a display means 3, a storage medium 4, and an operation means 5.

  The GPS receiving unit 1 includes a GPS receiving antenna, and amplifies a transmission radio wave as position information (latitude, longitude) received from the artificial satellite received by the receiving antenna as a high frequency signal and supplies the amplified signal to the control means 2. .

  The control means 2 is composed of a microcomputer, a ROM for storing a program for obtaining the vehicle speed, a CPU for executing the program, a RAM for temporarily storing calculation results and data (pulse period), and the vehicle. It has an interface circuit for inputting a state signal proportional to the traveling speed of the vehicle from the mounted vehicle speed sensor and the engine speed from the rotation sensor.

  The control means 2 inputs an SP pulse signal (vehicle speed pulse signal) as a state signal from a vehicle speed sensor (not shown) mounted on the vehicle, shapes the SP pulse signal, and generates the waveform-shaped pulse signal. A cycle or frequency is obtained, a vehicle speed as vehicle information is obtained according to the cycle or frequency, and this vehicle speed is output to the display means 3 as a control signal. The control means 2 inputs a TA pulse signal (engine speed pulse signal) as a status signal from an engine rotation sensor (not shown) mounted on the vehicle, shapes the TA pulse signal, and shapes the waveform. The period or frequency of the pulse signal thus obtained is obtained, the engine speed, which is vehicle information, is obtained according to this period or frequency, and this engine speed is output to the display means 3 as a control signal. The control means 2 may receive a vehicle speed information signal and an engine speed information signal from a separate control unit such as an ECU as a state signal indicating the vehicle speed and the engine speed.

  The vehicle display device has a travel information storage mode for storing travel information including vehicle information, and a travel information display mode based on the travel information. The control means 2 stores the travel information during a predetermined time in the storage medium 4 based on the operation of the operation means 5 in the travel information storage mode, reads the travel information in the travel information display mode, and changes the vehicle information. The display means 3 is driven and controlled to display the above. The present embodiment stores vehicle speed, engine speed, position information, travel distance, storage time, storage start and end times, and the like, which are vehicle information in the travel information storage mode. In addition, the present invention may store accelerator opening, brake stroke, water temperature, oil temperature, oil pressure, fuel pressure, exhaust temperature, acceleration, fuel consumption, etc. as vehicle information.

  The display means 3 consists of flat displays, such as a liquid crystal display device arrange | positioned, for example on the dashboard of a vehicle, and an organic electroluminescent display. The display unit 3 includes a drive circuit (not shown) and forms a predetermined display image based on a control signal corresponding to the speed and the engine speed from the control unit 2. FIG. 2 shows a display example in the normal display mode, which displays a display image indicated by a bar 33 that displays the vehicle speed as a numerical value 31 and displays the engine speed along the scale 32.

  FIG. 3 shows a display example of the display means 3 in the travel information display mode. The display means 3 has first and second display areas 3a and 3b in the travel information display mode. In the first display area 3a, an SP graph 34 indicating a change in vehicle speed and a TA graph 35 indicating a change in engine speed are displayed as vehicle information graphs indicating changes in vehicle information based on the travel information. The SP graph 34 and the TA graph 35 are graphs showing changes in vehicle information with respect to time, with the horizontal axis being time. In addition, SP graph 34 and TA graph 35 are good also as a graph which shows the change with respect to the travel distance of vehicle information by making a horizontal axis into a travel distance. In the second display area 3b, a map 36 and a travel locus 37 are displayed based on the position information included in the travel information. The travel locus 37 is drawn based on the position information stored in the storage medium 4 and indicates a travel course that has traveled during storage of vehicle information. The travel locus 37 may be drawn based on the vehicle speed and acceleration.

  Furthermore, the vehicle display device has a reproduction mode for reproducing the traveling information in the traveling information display mode. FIG. 4 shows a display example of the display means 3 in the reproduction mode. The control means 2 drives and controls the display means 3 to display a time bar (instruction part) 38 in the first display area 3a and to display a vehicle position mark 39 in the second display area 3b in the reproduction mode. The instruction unit 38 indicates the playback time point of the SP graph 34 and the TA graph 35. The vehicle position mark 39 indicates the position of the host vehicle on the travel locus 37 at the time of reproduction. Here, “reproduction of travel information” dynamically expresses (reproduces) changes in vehicle information in the travel information. That is, when the regeneration mode is executed, the time bar 38 moves at a predetermined speed in the first display area 3a in the horizontal direction in FIG. 4 to continuously indicate the vehicle speed or the engine speed at the regeneration time point, In synchronization with this, the vehicle position mark 39 moves on the traveling locus 37 and continuously indicates the position of the host vehicle at the reproduction time point. As an instruction method using the time bar 38, the SP graph 34 and the TA graph 35 are moved in the horizontal direction, or the time bar 38 is moved until a certain playback time, and thereafter, the position of the time bar 38 is fixed. For example, the SP graph 34 and the TA graph 35 may be moved together.

  The storage medium 4 is formed of a memory card having, for example, a flash memory capable of writing and reading data in the case body, and is detachably disposed on the vehicle display device, and is electrically connected to the control means 2. The storage medium 4 stores map information and the travel information.

  The operation means 5 has a plurality of switches such as a selection key and a determination key, and is for selecting and executing various functions of the vehicle display device.

  The vehicle display device is constituted by the above means.

  Such a vehicle display device displays the vehicle information graphs 34 and 35 and the travel locus 37 side by side on the display means 3 in the travel information display mode, thereby changing the vehicle information and the entire travel route or vehicle position. Can be compared with clear data recorded in the storage medium 4 regardless of the user's memory, and the user can check whether the vehicle information has changed in the past driving and whether or not his / her driving operation is appropriate. It is possible to analyze and analyze with high accuracy, and to enhance eco-driving support in consideration of the environment.

  The vehicle further includes the reproduction mode for reproducing the traveling information, and in the reproduction mode, a vehicle that indicates a time bar 38 indicating the reproduction time point of the vehicle information graphs 34 and 35 and a vehicle position on the traveling locus 37 at the reproduction time point. By displaying the position mark 39 on the display means 3 and synchronizing the continuous instruction by the time bar 38 and the vehicle position mark 39, the situation in which the vehicle information and the travel route in the past travel have changed from time to time can be simultaneously observed. It can be reproduced, and it is possible to instantly understand where and how the vehicle was in the vehicle and where it was driven, and further improve the accuracy of analysis and analysis by the user himself / herself Is possible.

The figure which shows the electrical constitution of the display apparatus for vehicles which is embodiment of this invention. The figure which shows the example of a display of the display means of embodiment same as the above. The figure which shows the example of a display of the display means of embodiment same as the above. The figure which shows the example of a display of the display means of embodiment same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 GPS receiving part 2 Control means 3 Display means 3a 1st display area 3b 2nd display area 34 SP graph (vehicle information graph)
35 TA graph (vehicle information graph)
36 Map 37 Traveling track 38 Time bar (indicator)
39 Vehicle position mark 4 Storage medium 5 Operating means

Claims (3)

Display means having first and second display areas;
A storage medium for storing travel information including at least vehicle information during a predetermined time;
Control means for reading the travel information, displaying a vehicle information graph indicating changes in the vehicle information in the first display area, and driving the display means to display a travel locus in the second display area; A vehicle display device comprising: A reproduction mode for reproducing the travel information, wherein the control means displays an instruction unit indicating a reproduction time point of the vehicle information graph in the first display area in the reproduction mode; and the second display The vehicle display device according to claim 1, wherein the display unit is driven to display a vehicle position mark indicating a vehicle position on the travel locus at the time of reproduction in an area. 3. The vehicle information according to claim 1, wherein the vehicle information includes vehicle position information, and the control means draws the travel locus or displays the vehicle position mark based on the vehicle position information. Vehicle display device.

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