KR101098827B1 - Context-aware transmission control apparatus and its control method - Google Patents

Abstract

The present invention is to control the shift in the neutral forward control mode by using the situational awareness information, for this purpose, unlike the conventional method of controlling the shift automatically in accordance with the vehicle speed, the steering information, speedometer information while driving the vehicle Neutral forward control to check whether information such as Excel information, brake information, engine information, mission information is checked, and to disable the engine brake when the Excel state and the brake state are off while maintaining the preset speed or more. By performing the mode, the fuel consumption due to the use of the engine brake can be reduced.

Automatic transmission, situational awareness, neutral forward control mode

Description

Context-sensitive shift control device and its control method {CONTEXT-AWARE TRANSMISSION CONTROL APPARATUS AND ITS CONTROL METHOD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a situational shift control technique of a vehicle, and more particularly, to a situation shift control apparatus suitable for recognizing various situations during driving of a vehicle and automatically controlling a shift shift corresponding thereto. .

The present invention is derived from the research conducted as part of the IT growth engine technology development project of the Ministry of Knowledge Economy and the Ministry of Information and Communication Research and Development. [Task management number: 2008-S-017-01, Task name: Integrated control SW platform for vehicle electronics] Development].

As is well known, automobiles are now favored by automatic transmissions over manual transmissions because of their convenience.

In the case of the automatic transmission, unlike the manual transmission, in the D (drive) mode, the engine output is continuously transmitted from the transmission to the front wheel or the rear wheel according to the front wheel or the rear wheel driving method to transmit the driving force of the engine.

Particularly, in the automatic transmission, the engine and the transmission that are intended to deliver driving power without driving the accelerator pedal when driven at a speed higher than a certain speed are operated by an engine brake to provide driving force along with air and ground friction. It will decrease, and you will have to continually follow the Excel pedal to speed it up again.

At this time, in the case of the automatic transmission, the engine brake operation is not performed in the N (nutral, neutral) mode, and only the speed reduction by the frictional force between the air and the ground is performed, thereby moving the vehicle further.

That is, in the conventional case, if there is no input of the Excel pedal, the engine and the transmission are operated by the engine brake according to the operation of the automatic transmission, thereby causing fuel consumption. Therefore, in order to increase the speed again, the Excel pedal should be stepped on again. Because of the additional fuel consumption due to the operation of the Excel was a problem.

Accordingly, an aspect of the present invention is to provide a shift control apparatus and a method for recognizing a driving situation in which a fuel consumption can be reduced by automatically switching from a drive mode to a neutral forward control mode and from a neutral forward mode to a drive mode. .

In one aspect, the present invention provides a vehicle driver for providing situation awareness information and an Excel state and a brake state while maintaining at least a preset speed according to speedometer information, Excel information, and brake information among the situation awareness information while the vehicle is being driven. In the off state, the shift control apparatus includes a shift control unit or a situation in which the vehicle driving unit is controlled to perform the neutral forward control mode of controlling the speed by using a friction force after changing the mission to a neutral state.

According to another aspect of the present invention, there is provided a method of providing information on whether the situation is detected while driving the vehicle, checking the information on the provided situation, and, as a result of the check, an Excel state and a brake at least in a state of maintaining a predetermined speed. When the state is off state provides a situation-sensitive shift control method comprising the step of performing a neutral forward control mode for controlling the speed by using a friction force after changing the mission to a neutral state.

The present invention, unlike the prior art that automatically shifts according to the speed of the vehicle, by switching to the neutral forward control mode when the Excel and the brake is off at a predetermined speed or more, the fuel saving effect of using the engine brake of the vehicle As a result, it is possible to expect an increase in fuel economy.

That is, the present invention can improve the automatic transmission performance of the vehicle by applying the automatic transmission to recognize the information of the speedometer, Excel, brake, transmission, and the like and control the transmission mode of the transmission according to the situation.

The present invention is to check whether the situation information such as steering information, speedometer information, Excel information, brake information, engine information, mission information while driving the vehicle, the Excel state and the brake state is in the off state while maintaining the preset speed or more In this case, the engine brake is controlled not to be used, and a technical problem can be solved through such technical means.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block configuration diagram of a transmission device whether the situation is suitable for automatically switching the driving mode by recognizing the driving state of the vehicle according to an embodiment of the present invention, the shift control unit 102, the steering unit 104, the speed meter unit 106, an Excel unit 108, a brake unit 110, an engine unit 112, a mission unit 114, and the like. In the block diagram, the steering unit 104, the speedometer unit 106, the accelerator unit 108, the brake unit 110, the engine unit 112, the mission unit 114, and the like are divided into these components. May be collectively referred to as a vehicle driving unit, and the steering information, speedometer information, excel information, brake information, engine information, mission information, etc. detected therefrom may be collectively referred to as situation awareness information.

Referring to FIG. 1, the shift perception shift control unit 102 includes, for example, an electronic control unit (ECU), various communication modules, and the like, and recognizes a driving situation through the steering unit 104. Recognizing a shift state of the vehicle through the speed meter unit 106, and controls various driving operations through the Excel unit 106, the brake unit 110, the engine unit 112 and the mission unit 114, etc. Do this.

In addition, the shift control unit 102 may be configured to control each component to perform various operations of the vehicle by supplying a power and a clock. For example, a controller area network (CAN) and a LIN (local) may be used. It is in charge of communication with the speedometer 106, the engine 112, the mission 114, and the like through a communication module such as an interconnect network (hereinafter referred to as a “LIN”), for example, an analog to digital convertor (ADC). Sensor values from the steering unit 104, the Excel unit 108, the brake unit 110, and the like, and stores and extracts various application programs through, for example, nonvolatile memory (NVRAM). Also, it records various variables, various data, etc. during driving, extracts and uses them when restarting, and, for example, the mission unit 114 through, for example, a digital input output (DIO). Digital to drive various external actuators, such as the mission actuator And it outputs the call. Here, the situation-aware shift control unit 102 may record various variables and various travel functions according to the operation of the situation-aware shift control function in a memory, and also perform a memory protection function during recording.

In the meantime, the shift control unit 102 may recognize the steering unit 104, the speedometer unit 106, the accelerator unit 108, the brake unit 110, the engine unit 112, and the mission unit 114 in the driving mode of the vehicle. And various sensor values (e.g., steering sensor value, speed sensor value, RPM) corresponding to various situational information (e.g., steering information, speedometer information, Excel information, brake information, engine information, mission information, etc.). Sensor value, mission sensor value, Excel sensor value, brake sensor value, etc.) are continuously provided and through this, automatic shift control is performed.

In addition, when the situation-aware shift control unit 102 determines the sensor values provided, when the state of the Excel is OFF and the speed and the mission state are the N state, the neutral forward control mode is performed. Is in the OFF state, the speed and the mission state is the X state, the normal mode is performed, on the other hand, when the state of the Excel is ON or the brake state is ON In the normal mode, on the other hand, it checks whether it is in the stopped state, and if it is not in the stopped state, the normal mode is performed in the stopped state.

In this case, the neutral forward control mode may be performed when the Excel state is turned off while driving at a predetermined speed (for example, 40 km / h, etc.) during the normal mode operation, and the speed and the mission state become N states. In this case, the normal mode may be performed.

For example, FIG. 3 is a diagram illustrating a state transition corresponding to situational shift control according to an exemplary embodiment of the present invention. In the state according to the situational shift control, for example, a normal mode, a stop mode, and a neutral forward control mode. The normal mode is a state corresponding to a general shift control, and means a mode for automatically changing a shift state of a mission according to a preset speed. For example, the speed is 0-20 km / h. In case of 1 speed, in case of speed of 20-40km / h, in 2 speed, in case of speed of 40-60 km / h, in 3 steps, in case of speed of 60km / h or more, it can be operated in 4 steps. Means when stopping the vehicle to stop the vehicle, the neutral forward control mode has a speed of 40km / h or more (that is, at least 40km / h), the Excel state is OFF, the brake state If OFF, the mission will be neutral This means that the speed is reduced by the road friction and the friction force of the front wind without using the engine brake.

In other words, if the engine is turned on while the vehicle is in the stop mode while the vehicle is in the stop mode, the vehicle operates in the normal mode, and the excel is turned off at a speed higher than the preset speed (for example, 40 km / h) in the normal mode. When the N mode state is changed, the state is changed to the neutral forward control mode, and when any condition is out of the neutral forward control mode, the state may be changed to the normal mode.

Next, the steering unit 104 includes, for example, a steering sensor. The steering unit 104 acquires a signal for checking whether the vehicle is driven and the degree of steering operation by the driver, and the steering information is a situational shift control unit 102. )

The speedometer 106 includes, for example, a speed sensor. The speedometer 106 detects the speed of the vehicle and provides the speedometer information to the shift controller 102.

In addition, the Excel unit 108 includes, for example, an Excel sensor, and detects a state of stepping on the acceleration pedal by the driver, and provides the Excel information to the situation-aware shift control unit 102.

Next, the brake unit 110 includes, for example, a brake sensor. The brake unit 110 detects a state in which the driver has depressed the pedal and provides the brake information to the shift control unit 102 as a situation.

In addition, the engine unit 112 includes, for example, an RPM sensor, and detects the revolutions per minute of the vehicle engine, and provides engine information on the rotation state to the shift control unit 102 of the situation.

On the other hand, the mission unit 114 includes, for example, a mission sensor, for example, in response to a drive control signal provided from the shift control unit 102, which is a situation, for example, driving a mission actuator or the like to operate the mission. It changes to, and provides the mission information associated with the situation to the shift control unit 102.

Next, after determining the excel state, the mission state, and the speed state by the sensor values from the respective constituents during driving of the vehicle in the shift control apparatus having the above-described configuration, the excel state is in the off state, A process of switching to the neutral forward control mode when the speed state is the N state will be described.

2 is a flowchart illustrating a process of automatically switching a driving mode by recognizing a driving condition of a vehicle according to an exemplary embodiment of the present invention.

Referring to FIG. 2, in the driving mode of the vehicle (step 202), the shift control unit 102 may recognize the steering unit 104, the speedometer unit 106, the excel unit 108, the brake unit 110, and the engine. Various sensor values (e.g., steering information, speedometer information, Excel information, brake information, engine information, mission information, etc.) from the unit 112, the mission unit 114, etc. , A steering sensor value, a speed sensor value, an RPM sensor value, a mission sensor value, an Excel sensor value, a brake sensor value, and the like) are continuously input (step 204).

In addition, the shift control unit 102 determines whether the vehicle is in the state of automatic shifting by using various sensor values inputted, and whether the Excel state is off and the mission and speed states are N (step 206). .

As a result of the check in the step 206, the shift control unit 102 controls each component to perform the neutral forward control mode when the Excel state is the off state and the mission and the speed state are the N state (step 208). . Here, the neutral forward control mode is, for example, more than a predetermined speed (for example, 40 km / h, etc.), the Excel sensor value and the brake sensor value is not detected, and the engine brake is adjusted by adjusting the mission to a neutral state. Without using, it means controlling to move forward with decreasing speed by road friction and friction force caused by wind in the front.

On the other hand, if the result of the check in step 206 indicates that the Excel state is in the off state and the mission and the speed state are not in the N state, the shift control unit 102 determines whether the Excel state is in the off state and the mission and speed state. Check if X is in step 210 (step 210).

As a result of the check in step 210, when the Excel state is the off state and the mission and the speed state are the X state, the shift control unit 102 controls each component to perform the normal mode (step 212). In this case, the normal mode represents an operation state of a general transmission and automatically changes a transmission state of a mission according to a preset speed. For example, when the speed is 0-20 km / h, If the speed is 20-40 km / h, it is operated in two stages. If the speed is 40-60 km / h, it is operated in three stages. it means.

For example, FIG. 4 is a diagram illustrating a relationship between a mission and a speed state according to an exemplary embodiment of the present invention. In the case where the mission stage is 1 stage, the speed is 0-20km / h, and when the mission stage is 2 stage, 20-40km / h, 40-60km / h in the case of three stages and 60km / h in the case of four stages, the mission and the speed status to perform the normal mode according to the shift control whether the stage 1 and 2 It can be set to the X state, and in the case of the third and fourth stages, the mission and speed states are set to the N state so that the neutral forward control mode according to the shift control of the situation can be performed. Control mode can optionally be performed.

On the other hand, if the result of the check in step 210, the Excel state is off, and the mission and speed state is not the X state, the shift control unit 102 whether the situation is the Excel state is on state or the brake state is on state Is checked (step 214).

As a result of the check in the step 214, the shift control unit 102 controls each component to perform the normal mode whether the situation is the case when the Excel state is on or the brake state is on (step 212).

On the other hand, as a result of the check in step 214, unless the Excel state is on or the brake state is on, the shift control unit 102 checks whether it is a stop state (step 216).

As a result of the check in the step 216, the shift control unit 102 controls whether each situation is in a situation where the vehicle is not in the stopped state (step 212), and the shift control unit 102 determines whether the situation is in the stopped state. Control each component to perform the stop mode (step 218).

Therefore, using the respective sensor values corresponding to the situation information such as steering information, speedometer information, Excel information, brake information, engine information, mission information, etc. while driving the vehicle, the state is in the Excel off state, and the mission and speed states are in the N state. When determined, the neutral forward control mode can effectively control the automatic shift of the vehicle.

In the foregoing description, various embodiments of the present invention have been described and described. However, the present invention is not necessarily limited thereto, and a person having ordinary skill in the art to which the present invention pertains can make various changes without departing from the technical spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

1 is a block diagram of a transmission apparatus whether or not a situation suitable for automatically switching a driving mode by recognizing a driving condition of a vehicle according to an exemplary embodiment of the present disclosure;

2 is a flowchart illustrating a process of automatically switching a driving mode by recognizing a driving condition of a vehicle according to an embodiment of the present disclosure;

3 is a view showing a state transition corresponding to a situation-aware shift control according to an embodiment of the present invention;

4 is a diagram illustrating a relationship between a mission and a speed state according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

102: situational shift control unit 104: steering unit

106: speed meter 108: Excel unit

110: brake portion 112: engine portion

114: mission unit

Claims (10)

A vehicle driver for providing situational awareness information, If the excel state and the brake state are in an off state while maintaining at least a preset speed according to the speedometer information, excel information, and brake information among the cognitive information while driving the vehicle, change the mission to a neutral state and then use the speed by using friction force. A shift control unit that controls the vehicle driving unit to perform a neutral forward control mode for controlling a Situation shift control device including a situation. The method of claim 1, And the shift control unit is in a situation in which the vehicle control unit controls the vehicle driving unit to perform a normal mode of controlling a shift state of the mission according to the speed of the vehicle when the shift control unit is less than the preset speed. The method of claim 1, The shift control unit is a situation whether the shift control unit controls the vehicle driving unit to perform a normal mode for controlling the shift state of the mission in accordance with the speed of the vehicle when the Excel state or the brake state is on. 4. The method according to any one of claims 1 to 3, And the neutral forward control mode is a situation of controlling whether or not to use an engine brake. 4. The method according to any one of claims 1 to 3, And the situation awareness information includes steering information, speedometer information, Excel information, brake information, engine information, and mission information. Providing information on whether the situation is detected while driving the vehicle, Checking the information on whether the situation is provided; Performing a neutral forward control mode in which the speed is controlled using a friction force after changing the mission to a neutral state when the excel state and the brake state are in an off state while maintaining at least a preset speed; A cognitive shift control method comprising a situation. The method of claim 6, The situation-aware shift control method may further include: performing a normal mode of controlling a shift state of the mission according to the speed of the vehicle when the check result indicates that the speed is less than the preset speed. The method of claim 6, The shift-cognition shift control method may further include a step of performing a normal mode of controlling the shift shift state of the mission according to the speed of the vehicle when the Excel state or the brake state is turned on as a result of the check. Control method. The method according to any one of claims 6 to 8, And the neutral forward control mode is a situation of controlling not to use an engine brake. The method according to any one of claims 6 to 8, And the situation awareness information includes steering information, speedometer information, Excel information, brake information, engine information, and mission information.

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