Apparatus and method for controlling lane change in vehicle

CROSS-REFERENCE TO RELATED APPLICATION

0001This application claims priority to and the benefit of Korean Patent Application No. <patcit id="pcit0001" dnum="KR1020180143874"><text>10-2018-0143874, filed on November 20, 2018</text></patcit>, which claims priority to and the benefit of <patcit id="pcit0002" dnum="US62655831A"><text>U.S. Provisional Patent Application No. 62/655,831, filed on April 11, 2018</text></patcit>, the entire contents of which are incorporated herein by reference.

FIELD

0002The present disclosure relates to an apparatus and method for controlling a lane change system in a vehicle.

BACKGROUND

0003The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

0004With the development of the auto industry, an autonomous system and a driving assistance system which facilitates partially autonomous driving (hereinafter, for convenience of description, both of autonomous driving and driving assistance are referred to as "autonomous driving") have been developed. The autonomous system may provide a variety of functions, for example, setting speed keeping, vehicle-to-vehicle distance keeping, lane keeping, and a lane change. The autonomous system may perform autonomous driving using various devices such as a sensor for sensing environments outside the vehicle, a sensor for sensing information about the vehicle, a global positioning system (GPS), a detailed map, a driver state monitoring system, a steering actuator, an acceleration/deceleration actuator, a communication circuit, and a control circuit (e.g., an electronic control unit (ECU)). Sensors capable of sensing other vehicles located around the vehicle may be desired to perform an automatic lane change among the above-mentioned functions.

0005To safely perform an automatic lane change, it may be desired for a sensor to operate normally. Particularly, it is desired for a rear sensor which senses situations behind the vehicle, which are difficult to be checked with eyes of the driver, to operate normally. The rear sensor should have a sufficient sensing range capable of providing the safety of the vehicle.

0006The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure, and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

SUMMARY

0007The present disclosure provides an apparatus and method for changing a state of a lane change system in consideration of whether a sensor operates normally to provide the safety of a driver.

0008According to an aspect of the present disclosure, an apparatus for controlling a lane change in a vehicle may include a sensor configured to sense an object located behind the vehicle and a control circuit configured to be electrically connected with the sensor. The control circuit may be configured to receive sensing data from the sensor and switch a system for lane change in the vehicle to a stand-by state, when an object located outside a specified distance backward from the vehicle is sensed by the sensor.

0009According to a further aspect of the present disclosure, the control circuit may be configured to receive the sensing data from the sensor, when the vehicle is started.

0010According to a further aspect of the present disclosure, the control circuit may be configured to switch the system for lane change to the stand-by state, when data about the object located outside the specified distance is included in the sensing data.

0011According to a further aspect of the present disclosure, the control circuit may be configured to determine whether the sensor operates normally, based on the sensing data.

0012According to a further aspect of the present disclosure, the control circuit may be configured to switch the system for lane change to the stand-by state, when the object located outside the specified distance is sensed by the sensor and when the vehicle is located within a specified operation section of the system for lane change.

0013According to a further aspect of the present disclosure, the control circuit may be configured to switch the system for lane change from an off state to the stand-by state, when the object located outside the specified distance is sensed by the sensor.

0014According to a further aspect of the present disclosure, the control circuit may be configured to switch the system for lane change to an on state, when approval of a driver of the vehicle is received in the stand-by state.

0015According to a further aspect of the present disclosure, the apparatus may further include an output device. The control circuit may be configured to output a visual indication indicating an off state, the stand-by state or an on state of the system for lane change using the output device.

0016According to a further aspect of the present disclosure, the control circuit may be configured to maintain an off state of the system for lane change, when only an object located within the specified distance is sensed by the sensor.

0017According to a further aspect of the present disclosure, the apparatus may further include an output device. The control circuit may be configured to output a visual indication indicating the sensing of the object using the output device, when the object located outside the specified distance is sensed by the sensor.

0018According to a further aspect of the present disclosure, the apparatus may further include an output device. The control circuit may be configured to output a visual indication indicating a fault of the sensor using the output device, when only an object located within the specified distance is sensed by the sensor.

0019According to another aspect of the present disclosure, a method for controlling a lane change in a vehicle may include steps of obtaining sensing data about the rear of the vehicle and switching a system for lane change in the vehicle to a stand-by state, when an object located outside a specified distance backward from the vehicle is sensed by a sensor included in the vehicle.

0020According to a further aspect of the present disclosure, the method may further include a step of determining whether the sensor operates normally, based on the sensing data. The method may include a step of switching the system for lane change to the stand-by state, when the sensor operates normally.

0021According to a further aspect of the present disclosure, the method may include a step of switching the system for lane change to the stand-by state, when the object located outside the specified distance is sensed by the sensor and when the vehicle is located within a specified operation section of the system for lane change.

0022According to a further aspect of the present disclosure, the method may further include a step of switching the system for lane change to an on state, when approval of a driver of the vehicle is received in the stand-by state.

0023Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.

DRAWINGS

0024In order that the disclosure may be well understood, there will not be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which: <ul id="ul0001" list-style="none" compact="compact"><li><figref idref="f0001">FIG. 1</figref> is a block diagram illustrating a configuration of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure;</li><li><figref idref="f0002">FIG. 2</figref> is a block diagram illustrating a lane change system in a vehicle according to a form of the present disclosure;</li><li><figref idref="f0003">FIG. 3</figref> is a block diagram illustrating a state of a lane change system in an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure;</li><li><figref idref="f0004">FIG. 4</figref> illustrates an exemplary operation of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure;</li><li><figref idref="f0005">FIG. 5</figref> illustrates an exemplary operation of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure;</li><li><figref idref="f0006">FIG. 6</figref> illustrates an exemplary operation of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure;</li><li><figref idref="f0007">FIG. 7</figref> is a flowchart illustrating a method for controlling a lane change in a vehicle according to a form of the present disclosure; and</li><li><figref idref="f0008">FIG. 8</figref> is a block diagram illustrating a configuration of a computing system according to a form of the present disclosure.</li></ul>

0025The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.

DETAILED DESCRIPTION

0026The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

0027In describing elements of forms of the present disclosure, the terms 1^st, 2^nd, first, second, A, B, (a), (b), and the like may be used herein. These terms are only used to distinguish one element from another element, but do not limit the corresponding elements irrespective of the nature, turn, or order of the corresponding elements. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meanings as those generally understood by those skilled in the art to which the present disclosure pertains. Such terms as those defined in a generally used dictionary are to be interpreted as having meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted as having ideal or excessively formal meanings unless clearly defined as having such in the present application.

0028<figref idref="f0001">FIG. 1</figref> is a block diagram illustrating a configuration of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure.

0029Referring to <figref idref="f0001">FIG. 1</figref>, an apparatus 100 for controlling a lane change in a vehicle may include a sensor 110, an input device 120, an output device 130, and a control circuit 140. The apparatus 100 for controlling the lane change in <figref idref="f0001">FIG. 1</figref> may be a portion of an autonomous system and may be loaded into the vehicle.

0030The sensor 110 may be configured to sense information about the outside of the vehicle. Particularly, the sensor 110 may be a rear sensor configured to sense an object located behind the vehicle. To provide the safety of a lane change, a sensing range of the sensor 110, which is greater than or equal to a specified distance (e.g., about 55 m) backward from the vehicle, may be desired.

0031The input device 120 may be configured to receive an input from a driver of the vehicle. The input device 120 may be configured to receive, for example, an instruction to enable a lane change system from the driver. The input device 120 may include a switch, a lever, a button, or the like.

0032The output device 130 may be configured to output information visually sensible by the driver. The output device 130 may include, for example, a display, a lamp, and/or the like.

0033The control circuit 140 may be electrically connected with the sensor 110, the input device 120, and the output device 130. The control circuit 140 may control the sensor 110, the input device 120, and the output device 130 and may perform a variety of data processing and various arithmetic operations. The control circuit 140 may be, for example, an electronic control unit (ECU), a micro controller unit (MCU), or a sub-controller, which is loaded into the vehicle.

0034As shown in <figref idref="f0001">FIG. 1</figref>, the control circuit 140 may receive sensing data from the sensor 110. For example, when the vehicle is started, the control circuit 140 may receive sensing data from the sensor 110. When an idle stop and go (ISG) system is operated, the control circuit 140 may determine that the vehicle is started.

0035Furthermore, the control circuit 140 may determine whether the sensor 110 operates normally, based on the sensing data. For example, when an object located outside a specified distance backward from the vehicle is sensed by the sensor 110, the control circuit 140 may determine that the sensor 110 operates normally. For another example, when data for an object located outside the specified distance is included in the sensing data, the control circuit 140 may determine that the sensor 110 operates normally.

0036When the sensor 110 operates normally, the control circuit 140 may switch a system for lane change in the vehicle to a stand-by state. For example, when the object located outside the specified distance backward from the vehicle is sensed by the sensor 110, the control circuit 140 may switch the system for lane change to the stand-by state. The control circuit 140 may switch the system for lane change from an off state to the stand-by state.

0037When the object located outside the specified distance is sensed by the sensor 110 and when the vehicle is located within a specified operation section of the system for lane change, the control circuit 140 may switch the system for lane change to the stand-by state. The specified operation section may be, for example, a limited-access road. When the vehicle is located within the operation section of the system for lane change and when the sensor 110 operates normally, the control circuit 140 may switch the system for lane change to the stand-by state.

0038When approval of a driver of the vehicle is received in the stand-by state, the control circuit 140 may switch the system for lane change to an on state. For example, when the approval of the driver is received via the input device 120, the control circuit 140 may enable the system for lane change. When the system for lane change is enabled, the control circuit 140 may perform automatic lane change control depending on an input of the driver.

0039When only an object located within the specified distance is sensed by the sensor 110, the control circuit 140 may maintain the off state of the system for lane change. When the sensor 110 does not sense an object located outside the specified distance, since a normal operation of the sensor 110 is not provided, the vehicle may maintain the system for lane change in the off state.

0040Accordingly, the control circuit 140 may output a user interface for a state of the sensor 110 and a state of the system for lane change using the output device 130.

0041<figref idref="f0002">FIG. 2</figref> is a block diagram illustrating a lane change system in a vehicle according to a form of the present disclosure.

0042Referring to <figref idref="f0002">FIG. 2</figref>, the system according to an exemplary form of the present disclosure may include a vehicle starting determining device 210, a rear sensor device 220, a sensor performance check device 230, and a lane change system state transition device 240, and a system state display device 250. The system may be loaded into the vehicle.

0043The vehicle starting determining device 210 may detect starting of the vehicle. When a vehicle system changes from an off state to an on state and is kept in the on state, the vehicle starting determining device 210 may determine that the vehicle is started. While an ISG system is operated, the vehicle starting determining device 210 may determine that the vehicle is started. The vehicle starting determining device 210 may determine whether the vehicle is started and may provide the result to the sensor performance check device 230.

0044The rear sensor device 220 may measure a relative distance, a relative speed, relative acceleration, and the like between the vehicle and an object around the vehicle and may provide the measured data to the sensor performance check device 230.

0045The sensor performance check device 230 may check whether a sensor operates normally, based on the information received from the vehicle starting determining device 210 and the rear sensor device 220. While sensing data is received in the state where the vehicle is started, when surrounding objects are recognized one or more times outside the specified distance backward from the vehicle, the sensor performance check device 230 may determine that the sensor operates normally until the vehicle system is turned off and may provide related information to the lane change system state transition device 240.

0046The lane change system state transition device 240 may set a state of the lane change system to an off state, a stand-by state, or an on state. When the normal operation of the sensor is recognized from the sensor performance check device 230, the lane change system state transition device 240 may switch the lane change system from the off state to the standby-state. The lane change system state transition device 240 may deliver information about a state of the sensor and a state of the lane change system to the system state display device 250.

0047The system state display device 250 may visually display the state of the sensor and the state of the lane change system to the driver based on the information received from the lane change system state transition device 240. For example, the system state display device 250 may visually display whether the sensor operates normally. For another example, the system state display device 250 may visually display the off state, the stand-by state, and the on state of the lane change system.

0048<figref idref="f0003">FIG. 3</figref> is a block diagram illustrating a state of a lane change system in an apparatus for controlling a lane change in a vehicle according to an exemplary form of the present disclosure.

0049Referring to <figref idref="f0003">FIG. 3</figref>, the lane change system may be in an off state. When a vehicle enters an operation section of the lane change system and a normal operation of a rear sensor is recognized, the lane change system may switch from the off state to a stand-by state. When the vehicle departs from the operation section, the lane change system may switch from the stand-by state to the off state.

0050When a driver of the vehicle turns on a lane change input device in the stand-by state, the lane change system may switch from the stand-by state to an on state. The lane change system may provide a pop-up for receiving approval of the driver. When the approval of the driver is received through the pop-up, the lane change system may switch from the stand-by state to the on state. When the driver turns off the lane change input device, the lane change system may switch from the on state to the stand-by state or may maintain the stand-by state.

0051<figref idref="f0004">FIG. 4</figref> illustrates an exemplary operation of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure.

0052Referring to <figref idref="f0004">FIG. 4</figref>, a vehicle 410 may detect objects located behind the vehicle 410 using a rear sensor. For example, when only objects within a specified distance of 55 m backward from the vehicle 410 are sensed by the rear sensor, the vehicle 410 may determine that the sensor does not operate normally and may maintain a lane change system in an off state.

0053For another example, when objects outside the specified distance backward from the vehicle 410 are sensed by the rear sensor, the vehicle 410 may determine that the sensor operates normally and may switch the lane change system to a stand-by state. When the objects outside the specified distance are sensed once, the vehicle 410 may determine that the sensor operates normally. Although the objects outside the specified distance disappear thereafter, because the normal operation of the sensor is already verified, the vehicle 410 may determine that the sensor operates normally until the vehicle 410 is turned off.

0054<figref idref="f0005">FIG. 5</figref> illustrates an exemplary operation of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure.

0055When only an object located within a specified distance is sensed by a sensor of the vehicle, the vehicle may output a visual indication indicating a fault of the sensor using its output device. When an object located outside the specified distance is sensed by the sensor, the vehicle may output a visual indication indicating the sensing of the object using the output device.

0056Referring to <figref idref="f0005">FIG. 5</figref>, the vehicle may display information associated with the vehicle on its display. The vehicle may display an indication indicating whether a rear sensor of the vehicle operates normally. For example, when only an object located within a specified distance is sensed by the rear sensor, that is, when an object located outside the specified distance is not sensed, the vehicle may display a first color indication 510, as a visual indication indicating a fault of the sensor, under a vehicle icon.

0057For example, when the object located outside the specified distance is sensed, the vehicle may display a second color indication 520, as a visual indication indicating a normal operation of the sensor, under a vehicle icon.

0058<figref idref="f0006">FIG. 6</figref> illustrates an exemplary operation of an apparatus for controlling a lane change in a vehicle according to a form of the present disclosure.

0059The vehicle may output a visual indication indicating an off state, a stand-by state, or an on state of a system for lane change using its output device.

0060Referring to <figref idref="f0006">FIG. 6</figref>, the vehicle may display information associated with the vehicle on its display. The vehicle may display an indication indicating a state of the lane change system on the display. For example, when the lane change system is in the off state, the vehicle may fail to display a related icon on the display.

0061When the lane change system switches from the off state to the stand-by state, the vehicle may display a first color icon 610 as a visual indication indicating the stand-by state of the lane change system.

0062When the lane change system switches from the stand-by state to the on state, the vehicle may display a second color icon 620 as a visual indication indicating the on state of the lane change system. Only when the lane change system is in the on state, the vehicle may perform lane change control depending on an input of its driver.

0063The driver may determine whether a sensor operates normally through the visual indication and may identify the state of the lane change system. Furthermore, the driver may visually identify whether the sensor operates normally to easily determine the reason why the lane change system is not enabled.

0064<figref idref="f0007">FIG. 7</figref> is a flowchart illustrating a method for controlling a lane change in a vehicle according to a form of the present disclosure.

0065Hereinafter, it is assumed that a vehicle including an apparatus 100 for controlling a lane change in <figref idref="f0001">FIG. 1</figref> performs a process of <figref idref="f0007">FIG. 7</figref>. Furthermore, in a description of <figref idref="f0007">FIG. 7</figref>, an operation described as being performed by the vehicle may be understood as being controlled by a control circuit 140 of the apparatus 100 for controlling the lane change.

0066Referring to <figref idref="f0007">FIG. 7</figref>, in operation 710, the vehicle may obtain sensing data about the rear of the vehicle. When the vehicle is started, it may collect sensing data using its sensor.

0067In operation 720, the vehicle may determine whether an object located outside a specified distance backward from the vehicle is sensed by the sensor in the vehicle. To verify performance of the sensor, the vehicle may determine whether the object located outside the specified distance capable of providing the safety of a lane change is sensed. When the object located outside the specified distance is not sensed, the vehicle may obtain sensing data until the object is sensed and may determine whether the sensor operates normally.

0068When the object located outside the specified distance is sensed, in operation 730, the vehicle may switch the system for lane change in the vehicle to a stand-by state. When the system for lane change switches to the stand-by state, the vehicle may switch the system for lane change to an on state depending on an operation of its driver and may perform a lane change depending on an operation of the driver in the on state.

0069<figref idref="f0008">FIG. 8</figref> is a block diagram illustrating a configuration of a computing system according to a form of the present disclosure.

0070Referring to <figref idref="f0008">FIG. 8</figref>, a computing system 1000 may include at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, a storage 1600, and a network interface 1700, which are connected with each other via a bus 1200.

0071The processor 1100 may be a central processing unit (CPU) or a semiconductor device for performing processing of instructions stored in the memory 1300 and/or the storage 1600. Each of the memory 1300 and the storage 1600 may include various types of volatile or non-volatile storage media. For example, the memory 1300 may include a read only memory (ROM) and a random access memory (RAM).

0072Thus, the operations of the methods or algorithms described in connection with the forms disclosed in the specification may be directly implemented with a hardware module, a software module, or combinations thereof, executed by the processor 1100. The software module may reside on a storage medium (i.e., the memory 1300 and/or the storage 1600) such as a RAM, a flash memory, a ROM, an erasable and programmable ROM (EPROM), an electrically EPROM (EEPROM), a register, a hard disc, a removable disc, or a compact disc-ROM (CD-ROM). An exemplary storage medium may be coupled to the processor 1100. The processor 1100 may read out information from the storage medium and may write information in the storage medium. Alternatively, the storage medium may be integrated with the processor 1100. The processor and storage medium may reside in an application specific integrated circuit (ASIC). The ASIC may reside in a user terminal. Alternatively, the processor and storage medium may reside as a separate component of the user terminal.

0073The apparatus for controlling the lane change in the vehicle according to a form of the present disclosure may provide the safety of the driver of the vehicle by switching the lane change system to the stand-by state when the object located outside the specified distance backward from the vehicle is sensed.

0074In addition, various effects directly or indirectly ascertained through the present disclosure may be provided.

0075While this present disclosure has been described in connection with what is presently considered to be practical exemplary forms, it is to be understood that the present disclosure is not limited to the disclosed forms, but, on the contrary, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the present disclosure.