JP2012076585A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a vehicle capable of securing security, by using an on-vehicle display means in common, when managing a vehicle by failure diagnosis or the like.SOLUTION: This display device for the vehicle includes a display means 3 for displaying an image, and a control means 2 for displaying vehicle information based on information from an on-vehicle external apparatus on the display means 3 by inputting the information. The control means 2 can switch an ordinary mode of displaying first vehicle information based on the information on the display means 3 and a management mode of displaying second vehicle information including information different from the first vehicle information on the display means 3, and permits transfer to the management mode from the ordinary mode by the connection of an exclusive external terminal 5.

Description

  The present invention relates to a vehicular display device including a control unit that shifts to a management mode based on an external signal and controls a display unit to operate based on a predetermined program stored in a storage unit.

  In the confirmation mode, a system that can perform self-diagnosis of faults, such as checking whether it can operate properly with respect to pointers and lights mounted on the instrument, without depending on information from the vehicle, is proposed For example, it is disclosed in Patent Document 1.

JP 2003-182473 A

  However, in these systems, in order to shift to the confirmation mode for diagnosing faults, since it is performed using switches provided in the vehicle, anyone can read and update fault data etc. Therefore, there is a possibility that sufficient management cannot be performed.

  Accordingly, an object of the present invention is to pay attention to the above-described problem, and when managing a vehicle such as a failure diagnosis, the vehicle display that can also be used as a vehicle-mounted display means and can ensure security. To provide an apparatus.

  A vehicle display device according to the present invention includes a display unit that displays an image, and a control unit that inputs information from a vehicle-mounted external device and displays vehicle information based on the information on the display unit. In the display device, the control unit displays a normal mode in which the first vehicle information based on the information is displayed on the display unit, and second vehicle information including information different from the first vehicle information. The management mode displayed on the display means can be switched, and the transition from the normal mode to the management mode is permitted by connection of a dedicated external terminal.

  Further, the control means switches and displays the display contents displayed on the display means by a predetermined input means, and updates the second vehicle information based on the operation of the input means in the management mode. It is characterized by performing an urgent update process.

  Further, the display means and the control means are provided in a vehicle meter, and display first vehicle information including at least a travel distance in the normal mode, and include at least failure data in the management mode. Vehicle information is displayed.

  The present invention relates to a display device for a vehicle including a control unit that shifts to a management mode based on an external signal and controls the display unit to operate based on a predetermined program stored in a storage unit. When managing a vehicle such as a diagnosis, it is possible to use a vehicle-mounted display means and ensure security.

The figure which shows the structure of the display apparatus for vehicles of embodiment of this invention. The flowchart shown about the process of the control means of embodiment same as the above.

  Hereinafter, as an embodiment of the present invention, a vehicle display device of the present invention applied to a vehicle meter will be described with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a configuration of a vehicle meter, and includes an input unit 1, a control unit 2, a display unit 3, and a ringing unit 4.

  The input means 1 can apply a switch that can be operated by the confirming person, and outputs a signal to the control means 2 in accordance with the operation. In this case, the input means 1 is used as an illumination brightness adjustment switch or a liquid crystal display screen switching switch mounted on the instrument in the normal mode. Note that the input unit 1 may be a vehicle interface outside the instrument such as a steering switch.

  The control means 2 can be a microcomputer, a storage section for storing input information and a predetermined program, a calculation section for performing calculation processing based on these information and programs, and a signal from the input means 1 In addition, vehicle information from an external device such as an electronic control unit (ECU) or a permission signal is input via an external terminal (dedicated terminal) 5 via a serial communication cable, or the display means 3 and the sounding means 4 are controlled. An input / output interface for outputting signals is provided.

  Further, the control means 2 can switch between the normal mode and the management mode by a predetermined operation by the input means 1, and a control signal for operating the display means 3 and the sounding means 4 based on each prepared program. Is generated and output.

  The display means 3 can apply a matrix-like display panel capable of displaying an image based on a control signal from the control means 2. In this case, a thin film transistor (TFT) type liquid crystal display panel and the liquid crystal display panel are provided. It is composed of a backlight that transmits light. In this case, since the vehicle instrument displays various measurement values (first vehicle information) of the vehicle, a liquid crystal display that expresses measurement values such as integrated travel processing, fuel consumption information, and outside air temperature with numerical values and gauges. In addition to the unit, in order to display a measured value such as the vehicle speed, a so-called rotating pointer, a dial plate provided with an index to be indicated by the pointer, and a motor as a driving source for the pointer are provided. An analog display unit is provided.

  The sounding means 4 can be a speaker and is configured to emit a desired sound based on a control signal from the control means 2. In this case, the sounding means 4 operates in order to perform alerting at the time of alarm or voice guidance in the normal mode.

  Next, processing related to the management mode by the control unit 2 will be described.

  In the normal mode, the control means 2 performs a connection determination process (step S1) for determining whether or not the external terminal 5 is connected to the vehicle communication cable and is in a communication state. The external terminal 5 periodically outputs (transmits) a read permission signal to the serial communication cable. Therefore, the control unit 2 can monitor whether the read permission signal is received from the external terminal 5 and determine whether or not the external terminal 5 is connected on the serial communication.

  When the external terminal 5 is on the communication network by the connection determination process described above, the control unit 2 determines that the administrator is operating, and shifts from the normal mode to the management mode (step S2). The display of the display means 3 is changed from a display screen of normal vehicle information (first vehicle information such as accumulated travel distance information) to a display screen including vehicle information (second vehicle information) such as failure data. The second vehicle information can be browsed by switching the screen. In the management mode, the control unit 2 receives a signal based on the operation of the input unit 1 or the operation of the external terminal 5 and controls the display contents to be displayed on the display unit 3 to perform various displays. is doing.

  Furthermore, the control means 2 performs a signal determination process (step S3) for determining whether or not an update permission signal is transmitted from the external terminal 5. The external terminal 5 is configured to transmit an update permission signal to the serial communication cable by operating a predetermined switch provided in the external terminal 5.

  Therefore, the control unit 2 determines that the administrator having the authority to update the data read in the management mode is operating, and, for example, according to the switch operation of the input unit 1 or the external terminal 5, for example, failure data or The process proceeds to a state (updateable state) in which the second vehicle information is updated and stored, such as resetting other history information or changing a set value (step S4). Thus, for example, after replacing the target part based on the failure data, information on the vehicle storage medium can be managed by inputting part replacement information such as date and part number or resetting the failure data. it can. In the management mode, the control means 2 updates vehicle information (second vehicle information) including failure data stored in a nonvolatile storage medium in the vehicle meter, or communicates via a serial communication cable. Thus, the vehicle information (second vehicle information) stored in the storage medium provided in the external device can be updated.

  In addition, the control means 2 can carry out voice guidance using the ringing means 4, such as an operation method and function explanation in these management modes. Therefore, the administrator can easily perform vehicle management work such as operation and confirmation.

  Further, the control means 2 determines whether or not the predetermined condition continues (step S5), and if not, shifts to the normal mode (step S6) and shifts to the management mode. Disable state. Note that the control means 2 includes the input means 1 and the external terminal 5 within a predetermined time (for example, 10 minutes), the input state of the ignition switch, the parking position of the gear position, the periodic input of the read permission signal and the update permission signal. The condition such as the operation is determined as the predetermined condition described above.

  By repeating these processes, it is possible to switch to each mode or shift to an updatable state according to the state.

  Such a vehicle display device includes a display means 3 for displaying an image, and a control means 2 for inputting information from an external device mounted on the vehicle and causing the display means 3 to display vehicle information based on this information. The control device 2 is configured to display a normal mode in which the first vehicle information based on the information is displayed on the display device 3 and second vehicle information including information different from the first vehicle information. The management mode displayed on the display means 3 can be switched, and the transition from the normal mode to the management mode is permitted by connection of a dedicated external terminal 5.

  Therefore, different management methods and management items for each vehicle type can be managed by using a vehicle instrument provided differently for each vehicle type, so that the external terminal 5 transmits a read permission signal, an update permission signal, and the like. Since a simple program such as output is sufficient, the external terminal 5 can be easily generalized. Further, the display means 3 can be used for both normal measurement value display (display of first vehicle information) and management data display (display of second vehicle information). Further, by using the external terminal 5, a vehicle display device that can ensure security can be obtained.

  Further, the control means 2 switches and displays the display contents displayed on the display means 3 by the predetermined input means 1 and updates the second vehicle information based on the operation of the input means 1 in the management mode. Update processing for prompting can be performed. The display means 3 and the control means 2 are provided in the vehicle meter, display the first vehicle information including at least the travel distance in the normal mode, and include at least failure data in the management mode. The vehicle information of is displayed.

  Therefore, for example, the administrator can perform confirmation operations such as failure diagnosis accompanied by operation of the steering wheel and various operation panels while sitting on the driving seat of the vehicle, and can perform operations for managing failure data and the like. Property is improved.

  The vehicle display device of the present invention has been described by way of example in the configuration of the embodiment described above, but the present invention is not limited to this, and the gist of the present invention is also achieved in other configurations. It goes without saying that various improvements and design changes can be made without departing from the scope. For example, although a speaker is used as the sounding means 4, the buzzer may be substituted when fine output such as voice output is not required in the normal mode.

  The present invention can be applied as, for example, a vehicle instrument mounted on a moving body such as an automobile or an agricultural machine or a construction machine.

1 Input means 2 Control means 3 Display means

Claims (3)

Display means for displaying an image;
A vehicle display device comprising: a control unit that inputs information from an external device mounted on a vehicle and displays vehicle information based on the information on the display unit;
The control means manages the normal mode in which the first vehicle information based on the information is displayed on the display means and the second vehicle information including information different from the first vehicle information on the display means. The vehicle display device is characterized in that the mode can be switched and the transition from the normal mode to the management mode is permitted by connection of a dedicated external terminal.   The control means switches and displays the display contents displayed on the display means by a predetermined input means, and updates to prompt the update of the second vehicle information based on the operation of the input means in the management mode The vehicle display device according to claim 1, wherein processing is performed.   The display means and the control means are provided in a vehicle meter, display first vehicle information including at least a travel distance in the normal mode, and a second vehicle including at least failure data in the management mode. The vehicle display device according to claim 1 or 2, wherein information is displayed.

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