JP2018047738A - Vehicular control apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To start a system quickly when a start operation is initiated for starting the system.SOLUTION: When a stop operation is initiated for stopping a system, a step that can be ended within predicted time, among plural ending steps, is executed, the time predicted as time until a start operation is initiated since the stop operation has been initiated. By so doing, there is no ending step in the midst of execution when a start operation is initiated, and therefore the system can be started when a user initiates the start operation.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle control device, and more particularly, to a vehicle control device including a processing device that is mounted on a vehicle and that executes a plurality of end processes when a stop operation for stopping the system is performed.

  Conventionally, as this type of vehicle control device, a device that turns off a vehicle power supply that supplies power to in-vehicle electrical components has been proposed (for example, see Patent Document 1). In this apparatus, when the engine switch is operated to stop the system, when turning off the power supply state, the vehicle power supply is turned off based on at least one of the position of the user and the use status of the in-vehicle electrical components. . Thereby, it is suppressed that a power supply is turned off although a user is using the electrical component.

JP 2010-64607 A

  However, in the above-described vehicle control device, when a start operation for starting the system is performed in a relatively short time after an operation for stopping the system is performed by the user, the process of turning off the vehicle power supply ends. The process to start the system is started. Therefore, it takes a relatively long time until the vehicle system is activated after the user performs the activation operation.

  The main object of the vehicle control device of the present invention is to start the vehicle more quickly when the system is operated by the user.

  The vehicle control apparatus of the present invention employs the following means in order to achieve the main object described above.

The vehicle control device of the present invention includes:
A vehicle control device including a processing device that executes processing for stopping a system,
When a stop operation for stopping the system is performed, the processing device is predicted as a time period from when the stop operation is performed until a start operation for starting the system is performed among a plurality of end processes. Perform a process that can be completed within the estimated time,
This is the gist.

  In the vehicle control device of the present invention, when a stop operation for stopping the system is performed, a time period from when the stop operation is performed to when the start operation for starting the system is performed among the plurality of end processes. As a result, a process that can be completed within the predicted time is executed. As a result, when an activation operation is performed, there is no termination process in the middle of execution, so that the system can be activated quickly.

  In such a vehicle control device of the present invention, the processing device is in order from the processing in which the execution time required for execution of the processing is within a range that can be completed within the predicted time, among the plurality of termination processing. It may be executed. In this way, more end processing can be executed before the vehicle is started.

  Further, in the vehicle control device according to the present invention, the processing device is a process that is within a range that can be completed within the predicted time and is predetermined as a high-priority process among the plurality of end processes. It is good also as what is performed in order. By doing so, before starting a vehicle, a process with high priority can be more reliably performed among several end processes.

It is a block diagram which shows the outline of a structure of the vehicle 20 as one Example of this invention. It is a flowchart which shows an example of the system stop process routine performed by CPU of HVECU70 of an Example. It is explanatory drawing which shows an example of the relationship between the time change of the state of a system when the estimated time tpr for determination is more than sum (ta + tb + tc + td) and less than sum (ta + tb + ... + te) and required time ta-tf of each completion | finish process. is there.

  Next, the form for implementing this invention is demonstrated using an Example.

  FIG. 1 is a configuration diagram showing an outline of a configuration of a vehicle 20 as an embodiment of the present invention. The vehicle 20 of the embodiment includes an engine 22, a planetary gear mechanism 30, motors MG1 and MG2, inverters 41 and 42, a high voltage battery 44, a low voltage battery 46, and a hybrid electronic control unit (hereinafter referred to as “HVECU”). 70).

  The planetary gear mechanism 30 is configured as a single pinion type planetary gear mechanism. This planetary gear mechanism 30 has a drive shaft 32 in which a sun gear is connected to the rotor of the motor MG1, a carrier is connected to the crankshaft 26 of the engine 22, and a ring gear is connected to drive wheels 36a and 36b via a differential gear 34. It is connected to the.

  The high voltage battery 44 is connected to the inverters 41 and 42 via the system main relay 43, and is connected to the low voltage battery 46 via the system main relay 43 and the DC / DC converter 45.

  The low voltage battery 46 is connected to various auxiliary machines such as a meter and an information display (not shown).

  The ITS electronic control unit (hereinafter referred to as “ITSCU”) 52 is configured as a microprocessor centered on a CPU (not shown), and temporarily stores ROM and data for storing processing programs in addition to the CPU. RAM and input / output ports are provided.

  Information from various systems constituting the intelligent road traffic system (ITS) 90, for example, information from a road-to-vehicle communication system such as signal information and road information, is input to the ITS ECU 52 via wireless communication.

  The ITSECU 52 is connected to an in-vehicle infotainment electronic control unit (hereinafter referred to as “IVI ECU”) 54 via a communication port, and exchanges various signals and data with the IVIECU 54 as necessary.

  The IVI ECU 54 is configured as a microprocessor centered on a CPU (not shown), and includes a ROM for storing a processing program, a RAM for temporarily storing data, and an input / output port in addition to the CPU.

  A signal from the periphery monitoring device 56 that monitors the periphery of the vehicle is input to the IVI ECU 54 via the input port. Examples of the peripheral monitoring device 56 include a millimeter wave radar attached to the rear center of the vehicle, and a camera installed in front of the vehicle and capable of capturing a landscape image in front of the vehicle as a moving image or a still image.

  The IVI ECU 54 is connected to the ITSECU 52 and the HVECU 70 via a communication port, and exchanges various signals and data as necessary.

  The HVECU 70 is configured as a microcomputer centering on a CPU (not shown). In addition to the CPU, a ROM that stores a processing program, a RAM that temporarily stores data, an input / output port, a communication port, Is provided.

  Data from various sensors is input to the HVECU 70 via an input port. The data from the various sensors includes a push signal from a power switch 80 attached to the front panel of the driver's seat, a seating signal Ssit from a seating sensor 82 for detecting that a user is seated on the seat, motors MG1, MG2. The rotation position from the rotation position detection sensor for detecting the rotation position of the rotor of the motor, the phase current from the current sensor attached to the power line of each phase of the motors MG1, MG2, and the output terminal of the high voltage battery 44 Examples include output voltage and output current from the voltage sensor and current sensor, shift position from the shift position sensor, accelerator opening from the accelerator pedal position sensor, vehicle speed from the vehicle speed sensor, and the like.

  Various control signals and the like are output from the HVECU 70. As various control signals, switching control signals to the switching elements of the inverters 41 and 42, drive signals to the system main relay 43, drive signals to the DC / DC converter 45, lighting on the indicator 81 built in the power switch 80 A signal is output.

  The HVECU 70 is connected to the IVI ECU 54 via a communication port, and exchanges data and control signals as necessary.

  The HVECU 70 releases the connection of the high voltage battery 44 and the low voltage battery 46 by the system main relay 43 every time the power switch 80 inputs a short push signal that is pressed for less than a predetermined time (for example, less than 3 seconds). Is connected to the power line of the inverters 41 and 42 by the system main relay 43 and the ignition is turned on (ACCON). IGON), and the ignition main (IGOFF) state in which the system main relay 43 disconnects the high voltage battery 44 and stops the system is controlled in this order. When the HVECU 70 inputs a plurality of short-press push signals from the power switch 80 within a certain time during traveling, or when a long-press push signal that the power switch 80 is pressed for a predetermined time or more is input, the HVECU 70 After the driving of MG1 and MG2 is stopped, the connection of the high voltage battery 44 and the low voltage battery 46 by the system main relay 43 is released to put the system in a stopped state.

  The HVECU 70 executes a plurality of end processes in order when the system is stopped. As a plurality of end processes, an engine stop process for stopping the engine 22, a high-voltage shut-off process for turning off the system main relay 43 and releasing the connection between the high-voltage battery 44 and the power lines of the inverters 41 and 42, various controls A plurality of memory writing processes for writing information such as parameters and setting values in an application for performing the above to a memory (not shown) are executed in this order. As the memory writing process, an application for executing a memory writing process (hereinafter referred to as “memory writing process 1”) in an application for executing control of the start / stop state of the system of the vehicle 20, or an application for executing control during traveling. Memory write processing (hereinafter referred to as “memory write processing 2”), memory write processing (hereinafter referred to as “memory write processing 3”) in an application for managing the storage state of the high voltage battery 44, and the DC / DC converter 45 For example, a memory write process (hereinafter referred to as “memory write process 4”) in an application for controlling. These end processes cannot be interrupted while the processes are being executed.

  Next, the operation | movement at the time of stopping the system of the vehicle 20 of the Example comprised in this way is demonstrated. FIG. 2 is a flowchart illustrating an example of a system stop processing routine executed by the CPU of the HVECU 70 of the embodiment. This routine is executed when a short-push push signal is input from the power switch 80 while the system is in an activated state, that is, when a stop operation for stopping the system is performed by the user.

  When this routine is executed, the HVECU 70 executes a process of inputting data necessary for the process, such as the required times ta to tf and the estimated prediction time tpr (step S100). The required times ta to tf are predetermined times as the time required from the start to the end of the execution of the engine stop process, the high-pressure shut-off process, and the memory write processes 1 to 4, respectively. For example, the required times ta to tf 1 second, 1 second, 0.5 second, 0.5 second, 0.5 second, 0.5 second, and so on. The estimated time tpr for determination is the time when the power switch 80 is short-pressed in a state where the system is activated, that is, after the stop operation for stopping the system is performed, and then the power switch 80 is short-pressed. This is the time that is predicted as the time until the start operation for starting the system. The estimated time tpr for determination is set by the IVI ECU 54 by communication.

  Here, the setting of the estimated time tpr for determination by the IVI ECU 54 will be described. When a stop operation for stopping the system is performed, the IVI ECU 54 first inputs data necessary for processing such as a signal from the peripheral monitoring device 56, signal information, a push signal, a brake pedal position BP, and a seating signal Ssit. As the traffic signal information, information transmitted from the ITS 90 by wireless communication is input via the ITS ECU 52. The push signal, the brake pedal position BP, and the seating signal Ssit are the push signal from the power switch 80 and the brake pedal position BP from the brake pedal position sensor that detects the depression amount of the brake pedal (not shown), and the seating signal Ssit from the seating sensor 82. Is input from the HVECU 70 via communication.

Subsequently, it is determined whether each condition based on the vehicle information is satisfied. The following conditions can be mentioned as each condition.
(1) A condition in which the brake pedal position BP exceeds a threshold value and the brake pedal is turned on. That is, when the user is stepping on the brake pedal because the user intends to start the system for starting. In this case, it is necessary for the user to start the vehicle when the vehicle is stopped while the system is activated. However, the user has accidentally pressed the power switch 80 to stop the system, which is relatively short. It is considered that the vehicle is started by short-pressing the power switch 80 in order to start the system in time.
(2) A condition that the seating signal Ssit is on. That is, when the user is not getting off because the user intends to start the system for starting. In this case, it is considered that the user starts the vehicle by short-pressing the power switch 80 in order to activate the system in a relatively short time.
(3) The condition that the traffic signal information is red (stopped) when an operation for stopping the system is performed. That is, when the user stops the system in order to suppress a decrease in fuel consumption caused by waiting for a signal. In this case, it is considered that the user starts the vehicle by short-pressing the power switch 80 in order to start the system when the signal is switched to the green signal (progress is possible).
(4) When the system is stopped by inputting a plurality of push signals from the power switch 80 within a predetermined time while the vehicle is running when the system is in the activated state, the peripheral monitoring device 56 The vehicle speed of the succeeding vehicle is greater than or equal to a predetermined value by the signal from the vehicle, and the distance between the following vehicles is less than or equal to the predetermined distance. That is, when it is necessary to avoid a collision from the following vehicle. In this case, it is considered that the user starts the vehicle by short pressing the power switch 80 in order to activate the system in an emergency start.

  When all of the above conditions (1) to (4) are not satisfied, the IVI ECU 54 sets a predetermined time (for example, 10 seconds, 15 seconds) as the minimum value of the time required from the normal system stop operation to the start operation. , 20 seconds, etc.) is set as the estimated prediction time tpr. When at least one of the above conditions (1) to (4) is satisfied, it is determined that a start operation for starting the system is performed earlier than usual, and each of the above conditions (1) to (4) is performed. Is set to the determination prediction time tpr (for example, 0.8 seconds, 1.5 seconds, 3 seconds, 4 seconds, etc. in order from the above conditions (1) to (4)). . In the foregoing, the setting of the determination prediction time tpr by the IVI ECU 54 has been described.

  Subsequently, the estimated prediction time tpr and the required time ta are compared (step S110). When it is determined that the determination predicted time tpr is less than the required time ta, the engine stop process, which is the first of the plurality of end processes described above, is executed until the power switch 80 is pressed for the next time. It is determined that the engine stop process cannot be completed at this time, and without executing the end process, next, the input of a push signal by a short press of the power switch 80 is waited (step S120), and this routine is terminated. Thus, it is not necessary to wait for the end of the engine stop process, and the system can be quickly activated when the user next presses the power switch 80 for a short time.

  When it is determined that the determination predicted time tpr is equal to or longer than the required time ta, the determination predicted time tpr is compared with the sum (ta + tb) of the required times ta and tb (step S130). When the estimated determination time tpr is less than the sum (ta + tb), the engine stop process, which is the first of the plurality of end processes described above, can be completed until the power switch 80 is pressed for the next time. Then, it is determined that the execution cannot be finished even if the execution of the high pressure shut-off process which is the next process is started, the engine stop process is executed (step S140), and this routine is finished. As described above, since the engine stop process that can be surely ended before the user short-presses the power switch 80 among the plurality of end processes is executed, the next time the user short-presses the power switch 80 The system can be started quickly.

  When it is determined that the determination prediction time tpr is equal to or greater than the sum (ta + tb), the determination prediction time tpr is compared with the sum (ta + tb + tc) of the required times ta, tb, and tc (step S150). When the estimated determination time tpr is less than the sum (ta + tb + tc), the engine stop process and the high-pressure shut-off process among the plurality of end processes can be completed before the power switch 80 is pressed for the next time. Even if the execution of the writing process 1 is started, it is determined that the execution cannot be ended, the engine stop process and the high-pressure shut-off process are executed (step S160), and this routine is ended. As described above, among the plurality of end processes, the engine stop process and the high pressure shut-off process that can be surely ended before the user presses the power switch 80 for a short time are executed. The system can be activated quickly when pressed.

  When it is determined that the determination prediction time tpr is equal to or greater than the sum (ta + tb + tc), the determination prediction time tpr is compared with the sum of the required times ta to td (ta + tb + tc + td) (step S170). When the estimated time for determination tpr is less than the sum (ta + tb + tc + td), the process from the engine stop process to the memory write process 1 among the above-described end processes can be completed until the power switch 80 is pressed for the next time. Then, even if the execution of the memory write process 2 is started, it is determined that the execution cannot be ended, and the engine stop process to the memory write process 1 are executed (step S180), and this routine is ended. Thus, among the plurality of end processes, the engine stop process to the memory write process 1 that can be surely ended before the user short-presses the power switch 80 are executed. The system can be activated quickly when a short press is pressed.

  Thus, the predicted time tpr for determination and the sum of the required times ta to tf for each end process are sequentially compared, and the next time the power switch 80 is short-pressed, It is sequentially checked whether the process can be terminated, and the process is executed from the engine stop process to the process that can be terminated. When it is determined that the determination predicted time tpr is equal to or longer than the sum (ta + tb +... + Tf) (step 210), all the end processes are executed (step S230), and this routine is ended. As described above, since the processing up to the end that can be surely ended before the user short-presses the power switch 80 among the plurality of end processings is executed, the next time the user short-presses the power switch 80 You can start the system.

  FIG. 3 shows an example of the relationship between the time change of the system state and the required times ta to tf of each end process when the estimated prediction time tpr is greater than or equal to the sum (ta + tb + tc + td) and less than the sum (ta + tb +... + Te). It is explanatory drawing shown. As shown in the figure, when the estimated time tpr for determination elapses after the power switch 80 is pressed for a short time and the ignition is turned off (time t1), the power switch 80 is pressed for a short time and the ignition is turned on. At (time t2), the process from the engine stop process to the memory write process 2 can be completed, but the memory write process 3 cannot be completed. Since each termination process cannot be terminated halfway, if the memory write process 3 is executed when the estimated time tpr for determination is greater than or equal to the sum (ta + tb + tc + td) and less than the sum (ta + tb +. The system is started after the execution of the process 3 is completed. In the embodiment, when the estimated time tpr for determination is greater than or equal to the sum (ta + tb + tc + td) and less than the sum (ta + tb +... + Te), the process is executed from the engine stop process to the memory write process 2, and the memory write process 3 is not executed. It is possible to prevent the system from being started after waiting for the end of the process or the end of the process being executed. Thereby, a system can be started more reliably and rapidly.

  According to the vehicle 20 of the embodiment described above, when a stop operation for stopping the system is performed, a process that can be terminated within the estimated time tpr for determination among the plurality of termination processes is executed. When the activation operation is performed, the system can be activated more quickly.

  In the vehicle 20 of the embodiment, when the system is stopped, the engine stop process, the high-pressure shut-off process, and the memory write processes 1 to 4 are executed in this order. However, the order in which each end process is performed may be appropriately changed. For example, the processes may be executed in order from the process having the shortest required time ta to tf. In this way, more termination processing can be executed. Further, high priority processing may be executed first. By so doing, it is possible to execute processing with higher priority more reliably.

  In the vehicle 20 of the embodiment, when the system is stopped, the engine stop process, the high-pressure shut-off process, and the memory write processes 1 to 4 are executed in this order, but the process is limited to these processes. However, other processes may be executed.

  In the embodiment, the present invention is applied to a hybrid vehicle including the engine 22 and the motors MG1 and MG2. However, the present invention is applied to any vehicle such as a vehicle including only an engine as a driving source for traveling. It doesn't matter.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the ITSECU 52, the IVI ECU 54, and the HVECU 70 correspond to “processing devices”.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

  The present invention can be used in the manufacturing industry of vehicle control devices.

  20 Vehicle, 22 Engine, 26 Crankshaft, 30 Planetary gear mechanism, 32 Drive shaft, 34 Differential gear, 36a, 36b Drive wheel, 41, 42 Inverter, 43 System main relay, 44 High voltage battery, 45 DC / DC converter, 46 Low-voltage battery, 52 ITS electronic control unit (ITS ECU), 54 On-board infotainment electronic control unit (IV I ECU), 56 Perimeter monitoring equipment, 70 Hybrid electronic control unit (HV ECU), 80 Power switch, 81 Indicator, 90 Advanced Road traffic information system (ITS), MG1, MG2 motor.

Claims (1)

A vehicle control device including a processing device that executes processing for stopping a system,
When a stop operation for stopping the system is performed, the processing device is predicted as a time period from when the stop operation is performed until a start operation for starting the system is performed among a plurality of end processes. Perform a process that can be completed within the estimated time,
Vehicle control device.

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