JP2011179415A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for vehicles, capable of inhibiting a sense of congruity given to a vehicle user by not performing an initial display process when returning from an idle stop function. <P>SOLUTION: An arithmetic section 3 is provided with a memory part 2 storing a flag (information) for discriminating a first state which is an engine stop state by the idle stop function and a second state which is an engine stop state by conditions other than at least the idle stop function, performs a determining process based on the flag stored in the memory part 2 at start of an engine as to whether or not the start of the engine is returning operation from the first state, and performs control for prohibiting the initial display process by a display part 1 when determining that the engine start is the returning operation from the first state and for performing the initial display process by the display part 1 when determining that the engine start is not the returning operation from the first state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  Control means mounted on a vehicle having an idle stop function for automatically stopping / starting the engine according to the running state of the vehicle and receiving display of power from a battery mounted on the vehicle is provided. For example, the vehicle display device is suitable for a vehicle display device that performs an initial display process as an effect.

  Conventionally, there is a vehicle equipped with an idle stop function for the purpose of saving energy or protecting the global environment. For example, the engine is stopped while the ignition switch is kept on for a relatively long time such as a relatively short stop time such as waiting for a signal, a person getting on and off, and loading or unloading a load.

  A display device for a vehicle such as a meter mounted on a vehicle that performs this kind of idle stop can be driven by power supply from a battery. For example, as described in Patent Document 1, in an idle stop state, In some cases, it is desired to reduce the illumination brightness in order to reduce the burden on the battery.

JP 2006-256397 A

  However, in the above-described vehicle display device, for example, in a state where the battery capacity is low such as deterioration, the power supply voltage to the control means including the microcomputer is temporarily increased due to the fluctuation of the battery voltage that occurs when returning from the idle stop state. A phenomenon that the control means is lowered and the control means is reset can be considered.

  In addition, for example, the initial display process may be performed for confirmation or production as in the case of an instrument, a navigation system, an in-vehicle audio, etc., but at the time of return accompanied by the reset of the control means as described above, the idle stop function There is a problem that not only the initial display process is performed every time the vehicle returns from the vehicle, but the vehicle user is bothered and uncomfortable, and the normal display of vehicle information is delayed.

  Accordingly, an object of the present invention is made by paying attention to the above-described problems, and a vehicle that can suppress a sense of discomfort given to a vehicle user by not performing initial display processing when returning from the idle stop function. It is to provide a display device.

  A display device for a vehicle according to the present invention is mounted on a vehicle that performs an idle stop function that automatically stops / starts an engine according to a running state of the vehicle, and displays a display by receiving power supply from a battery mounted on the vehicle. A vehicle display device comprising control means for controlling display of the means, wherein the control means is configured to stop the engine according to a first state in which the engine is stopped by the idle stop function and at least a condition other than the idle stop function. A storage unit for storing information for distinguishing the second state, which is a state, is provided, and starting the engine from the first state based on the information stored in the storage unit when starting the engine In the case where it is determined whether the operation is a return operation, and when it is determined that the operation is the return operation from the first state, an initial display process by the display unit is performed. Sealed, when it is determined that it is not the return operation from the first state, and controls to perform initial display processing by the display unit after starting of the engine.

  Also, a control means that is mounted on a vehicle that performs an idle stop function that automatically stops / starts the engine according to the running state of the vehicle, and that controls display by receiving power from a battery mounted on the vehicle. And the control means includes a first state in which the engine is stopped by the idle stop function and a second state in which the engine is in a stopped state due to a condition other than at least the idle stop function. A storage unit for storing information for determining whether the control unit is in the first state based on the information stored in the storage unit during the initial calculation process of the control unit. When it is determined whether or not there is a first state, the normal display process is performed without performing the initial display process by the display unit. And, when it is determined that the in the second state, and wherein said display controlling after performing initial display processing so as to perform normal display processing by unit after the initial processing.

  In addition, even when the engine is stopped by the idle stop function, the control unit updates the information as the second state when the ignition switch is operated from on to off as one of the conditions. It is characterized by.

  The present invention is mounted on a vehicle that performs an idle stop function for automatically stopping / starting an engine according to the running state of the vehicle, and controls display by receiving power supply from a battery mounted on the vehicle. With respect to the vehicle display device including the control means, it is possible to suppress a sense of discomfort given to the vehicle user by not performing the initial display process when returning from the idle stop function.

The block diagram which shows the structure in embodiment of this invention. The flowchart which shows the process sequence by the calculating part regarding the flag of embodiment same as the above. The flowchart which shows the process sequence by the calculating part at the time of engine starting of an embodiment same as the above, or the microcomputer initial stage calculation process.

  Hereinafter, as an embodiment of the present invention, an example in which the vehicle display device of the present invention is applied to a vehicle instrument including a speedometer will be described with reference to the accompanying drawings. In this case, the vehicle idle stop function automatically stops the engine when a predetermined time has elapsed after the vehicle stops, and automatically restarts the engine according to the pedal operation state by the vehicle user. It works.

  FIG. 1 is a diagram showing a configuration of a vehicle meter, and includes a display unit (display unit) 1, a storage unit (control unit) 2, and a calculation unit (control unit) 3.

  Although not shown in detail, the display unit 1 includes a pointer that is rotated by a motor that operates based on a measurement value, and a so-called pointer instrument that includes a scale and characters that are to be indicated by the pointer. In addition, a display panel that expresses vehicle information such as measurement values by characters, marks, bar graphs, and the like using a liquid crystal panel or an organic EL panel, an indicator light that indicates an indicator or alarm, and the like are provided. With these configurations, the display unit 1 displays the vehicle information such as the vehicle running speed, the engine speed, the vehicle outside temperature, the remaining fuel amount, and the shift position indicator based on the control signal from the calculation unit 3. To do.

  The display unit 1 performs initial display processing different from normal vehicle information display processing (hereinafter referred to as normal display processing) when the vehicle user gets on and operates the ignition switch from OFF to ON. After that, normal display processing is performed. As an initial display process, a reciprocating operation of the pointer, a display such as “HELLO” on the display panel, and confirmation of lighting of the indicator lamp are performed. In this case, a display panel for an external device such as an audio, an air conditioner, or a navigation system is used as a display unit outside the vehicle instrument, and the initial display process is performed in synchronization.

  The storage unit 2 is connected to the calculation unit 3 and is configured by a storage medium including a control program to be calculated by the calculation unit 3 and a RAM and a ROM for storing various data. Further, the storage unit 2 stores a flag (information) updated by the processing of the calculation unit 3.

  The calculation unit 3 can apply a CPU of a microcomputer as a control means, and inputs various signals from various sensors mounted on the vehicle, an ignition switch state signal, and the like, and performs arithmetic processing based on these signals. Thus, a process for updating various data in the storage unit 2 and a control signal for controlling the display unit 1 and the external device are generated and output.

  The calculation unit 3 updates the flag of the storage unit 2 as a first state in which the engine is stopped by the idle stop function and can be automatically returned (automatic start of the engine) by a pedal operation or the like. The engine operating state and the ignition switch off state are updated as the second state. In this case, the calculation unit 3 updates the flag according to the processing procedure as shown in FIG.

  The calculation unit 3 determines whether or not the ignition switch is on based on the signal input (step S1). If the ignition switch is on, is the engine stopped by the idle stop function? It is determined whether or not (step S2). In the case of the engine stop state by the idle stop function, a signal indicating this is transferred from the ECU as one of various signals, and therefore determination can be made based on this signal. Next, when it is determined in step S2 that the engine is stopped by the idle stop function, the calculation unit 3 updates and stores the flag as the first state (step S3).

  In addition, when it is determined in step S1 that the ignition switch is in the OFF state, or when the processing unit 3 determines in step S2 that the engine is in a state other than the engine stop state due to the idle stop function, The flag is updated and stored as the state 2 (step S4). Note that the calculation unit 3 may have a condition other than the idle stop function as an engine stop condition, such as when the ignition switch is operated from on to off after the engine is stopped by the idle stop function (automatic operation by pedal operation). If the engine cannot be started, the flag is updated to the second state and stored.

  In addition, the calculation unit 3 uses FIG. 3 to explain a processing procedure at the time of starting the engine or the initial calculation process of the microcomputer, based on the flag updated by repeating the processes of steps S1 to S4 described above. To do.

  The calculation unit 3 determines whether or not the ignition switch is in an on state (step S11). If the ignition switch is in an on state, the flag is in the second state or the second state. Whether or not is determined (step S12).

  When the flag is in the second state as a result of the determination process in step S12, the calculation unit 3 performs, as an initial display process, an effect display including a display different from the vehicle information, a display for operation confirmation, a pointer A control signal for controlling the display 1 and the external device is output so as to perform display for indicating position adjustment (step S13). Next, the calculation unit 3 performs normal display processing including normal display similar to when the vehicle is running, for example, display of vehicle information such as measured values such as instantaneous fuel consumption information of the vehicle, after the initial display processing is completed. Thus, a control signal is output to the display unit 1 (step S14).

  Further, when the flag is in the first state by the determination process in step S12, the calculation unit 3 performs the normal display process in step S14 without performing the initial display process in step S13.

  Such a vehicle display device is mounted on a vehicle that performs an idle stop function that automatically stops / starts an engine according to the traveling state of the vehicle, and receives a power supply from a battery mounted on the vehicle to display a display unit. 1 is a vehicle display device that includes a calculation unit 3 that controls display of the engine 1, and the calculation unit 3 is an engine that is in a first state in which the engine is stopped by the idle stop function and at least a condition other than the idle stop function. A storage unit 2 for storing a flag (information) for determining a second state that is a stop state is provided, and the engine is started based on the flag stored in the storage unit 2 when the engine is started. When it is determined whether or not the operation is a return operation from the first state, and when it is determined that the operation is the return operation from the first state, an initial display process by the display unit 1 is performed. Prohibited, if it is determined that it is not the return operation from the first state, controlling so as to perform initial display processing by the display unit 1 after start of the engine.

  Further, the calculation is performed in a vehicle that performs an idle stop function that automatically stops / starts the engine according to the running state of the vehicle, and that controls display on the display unit 1 by receiving power supply from a battery mounted in the vehicle. The display device for vehicles provided with the part 3, Comprising: The calculating part 3 is the 1st state which is the engine stop state by the said idle stop function, and the 2nd engine stop state by conditions other than the said idle stop function at least A storage unit 2 for storing a flag for determining the state of the first calculation process, and the state before the initial calculation process is based on the flag stored in the storage unit 2 during the initial calculation process of the calculation unit 3. If it is determined whether or not it is in the first state and the first state is determined, control is performed so that the normal display process is performed without performing the initial display process by the display unit 1. If it is determined that the second state, normal control so as to perform display processing after performing initial display processing by the display unit 1 after the initial processing.

  Therefore, the above-described display device for a vehicle does not perform an initial display process every return from the idle stop function when the engine operation is returned with a reset process of the microcomputer due to the low voltage state of the drive voltage. Vehicle information can be quickly displayed without bothering the user and feeling uncomfortable.

  In addition, even when the engine is stopped by the idle stop function, the arithmetic unit 3 updates the flag as the second state when the ignition switch is operated from on to off as one of the conditions. Accordingly, the initial display process can be performed except for the return from the engine stop by the idle stop function.

  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.

  The present invention can be applied as, for example, a display device for a vehicle mounted on a moving body including an automobile, a motorcycle, an agricultural machine, or a construction machine.

1 Display section (display means)
2 Storage unit (control means)
3. Calculation unit (control means)

Claims (3)

Control means mounted on a vehicle having an idle stop function for automatically stopping / starting the engine according to the running state of the vehicle and receiving display of power from a battery mounted on the vehicle is provided. Vehicle display device,
The control means stores information for determining a first state that is an engine stop state by the idle stop function and a second state that is at least an engine stop state by a condition other than the idle stop function. Set up a section,
Based on the information stored in the storage unit when the engine is started, it is determined whether or not the start of the engine is a return operation from the first state,
When it is determined that the return operation from the first state, the initial display processing by the display means is prohibited,
A vehicle display device that controls to perform an initial display process by the display means after the engine is started when it is determined that the return operation from the first state is not performed. Control means mounted on a vehicle having an idle stop function for automatically stopping / starting the engine according to the running state of the vehicle and receiving display of power from a battery mounted on the vehicle is provided. Vehicle display device,
The control means stores information for determining a first state that is an engine stop state by the idle stop function and a second state that is at least an engine stop state by a condition other than the idle stop function. Set up a section,
Based on the information stored in the storage unit during the initial calculation process of the control means, it is determined whether or not the state before the initial calculation process is the first state,
If it is determined that the state is the first state, control is performed to perform normal display processing without performing initial display processing by the display means,
A display device for a vehicle, characterized in that, when it is determined that the second state is established, control is performed so as to perform normal display processing after performing initial display processing by the display means after the initial calculation processing.   The control means updates the information as the second state when the ignition switch is operated from on to off as one of the conditions even when the engine is stopped by the idle stop function. The vehicle display device according to claim 1, wherein the display device is a vehicle display device.

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