KR101548868B1 - Apparatus and method for controlling safety driving of vehicle based on brain wave signal - Google Patents

Abstract

The present invention relates to an apparatus for controlling safe driving of a vehicle using a brain wave signal and a method therefor. The present invention comprises: a brain wave extractor measuring a brain wave from a driver to generate a brain wave signal in real-time; a storage unit where driver state range information displaying the information which can classify a state of a driver as one state among the states and a delta wave value of alcohol concentration are pre-stored; a vehicle control unit controlling a vehicle audio and a vehicle emergency light and ignition; and a control unit generating a brain wave signal through the brain wave extractor and extracting the brain wave signals from the generated brain wave signal, respectively and calculating an average value of the extracted brain wave signals and determining the state of the driver as one state among the states based on the calculated average value and the driver state range information and generating the vehicle control signal corresponding to one determined state and controlling at least one motion among the vehicle audio and the vehicle emergency light and the ignition in accordance with the vehicle control signal generated in the vehicle control unit.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for controlling safe operation of a vehicle using an EEG signal,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for controlling a safe driving of a vehicle, and more particularly to a technique for controlling safe driving of a vehicle by using an EEG signal of a driver.

The Korean auto market has steadily increased by 13% in 2010, 4.3% in 2011, and 4.4% in 2012 from 2010 to 2012, respectively. This has led to an increase in the demand for automobiles in the Korean automobile market as well as the global automobile market. Korea is the world's fifth-largest producer of automobiles. Despite being the world's 10th largest economy in the world among the 31 OECD member economies in 2012, the annual traffic accident death rate is 11.3 deaths per 100,000 population per year. In Korea, the death toll per 10,000 cars is more than twice the average annual death toll in other OECD countries. In the Republic of Korea, social expenditure due to traffic accidents is 1% of GDP, consumes more than 6% of the national budget, and is regarded as an underdeveloped country by OECD member countries. Therefore, it is required to develop a technology that measures the driver 's condition and feeds back the measured driver' s condition to the car to prevent traffic accidents.

KR 1020130061901 A

The embodiment of the present invention controls the safe operation of the vehicle using the EEG signal that can measure the EEG of the driver in real time and analyze the measured EEG signal to provide the vehicle control signal for safe driving The present invention also provides an apparatus and a method for controlling a display device.

In addition, the embodiment of the present invention classifies the driver's state into one of the states of sleepiness, excitement, and drinking from the measured brain waves of the driver and outputs an EEG signal capable of providing a vehicle control signal for safe operation corresponding to each state The present invention also provides an apparatus and method for controlling the safe operation of a vehicle using the same.

An apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention includes an EEG extractor for measuring an EEG from a driver and generating an EEG signal in real time; A storage unit in which driver state range information and alcohol concentration delta wave values indicating information that can divide the driver's state into one of a plurality of states are stored in advance; A vehicle control unit capable of controlling audio, emergency, and start of the vehicle; And generating an EEG signal through the EEG extractor, extracting a plurality of EEG signals from the generated EEG signal, calculating an average value of the extracted EEG signals, calculating the average value of the extracted EEG signals, And a vehicle control signal generating unit that generates a vehicle control signal corresponding to the determined one of the plurality of states based on the vehicle control signal generated by the vehicle control unit, And a controller for controlling operations of at least one of the emergency light and the start-up.

The plurality of EEG signals may be selected from the group consisting of a Delta Wave, a Theta Wave, a Low Alpha Wave, a High Alpha Wave, a Low Beta Wave, (High Beta Wave), a Low Gamma Wave, and a Mid Gamma Wave.

Wherein the average value is obtained by converting the plurality of EEG signals into digital data values of eight 3-byte unsigned integer format in a little endian format that each represents an unsigned integer, And the sum of the converted digital data values is divided by the number of the plurality of EEG signals.

The plurality of states may include a drowsy state, a normal state, an excited state, and a drinking state.

Wherein the control unit permits a start-on state through the vehicle control unit, regenerates an EEG signal through the EEG extractor, determines an average value of the EEG calculated from the regenerated EEG signal, And generating a vehicle control signal corresponding to the classified drowsy state or the excited state by classifying the driver state range information into one of the drowsy state or the excited state, And controlling the operation of the audio or the emergency light according to the control signal.

Wherein the control unit determines whether the driver's blood alcohol concentration is less than an allowable blood alcohol concentration when the driver's condition is determined to be a drinking state and if the blood alcohol concentration is less than the allowable blood alcohol concentration, And controls the operation of the audio or the emergency light according to the drinking state vehicle control signal generated through the vehicle control unit. When the driver's alcohol concentration is equal to or higher than the permissible blood alcohol concentration, the driver is prevented from drinking driving Generating a vehicle activation signal including command information for limiting the startup state, and controlling the starting of the vehicle in accordance with the vehicle activation signal generated through the vehicle control unit.

Wherein the control unit determines whether the digital data value converted from the delta wave among the plurality of EEG signals constituting the average value has a value less than the blood alcohol concentration delta wave value so that the blood alcohol concentration is less than the allowable blood alcohol concentration .

A method for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention includes generating EEG signals through an EEG extractor; Determining a drunk state of the driver from the generated EEG signal; Allowing the vehicle to be turned on when the vehicle is not in the drinking state; Regenerating an EEG signal through the EEG extractor; Classifying the driver's state into a drowsy state or an excited state from the regenerated EEG signal; Generating a vehicle control signal corresponding to the classified drowsy state or excited state; And controlling operation of the audio or emergency light of the vehicle according to the generated vehicle control signal.

The method for controlling safe operation of a vehicle using the EEG signal includes the steps of: determining whether a blood alcohol concentration of the driver is less than an allowable blood alcohol concentration in the drinking state; Controlling the operation of the audio or the emergency light when the blood alcohol concentration is less than the allowable blood alcohol concentration; And maintaining the active state of the vehicle when the blood alcohol concentration is equal to or higher than an allowable blood alcohol concentration; As shown in FIG.

The step of maintaining the active state of the vehicle includes the steps of generating a vehicle activation signal including command information for limiting the starting state of the vehicle so as to prevent the driver from drunk driving; And controlling the starting of the vehicle in accordance with the generated vehicle activation signal.

A method for controlling safe operation of a vehicle using the EEG signal includes extracting a plurality of EEG signals having respective unique frequency bands from the first EEG signal before determining a drunk state of the driver; Converting the extracted plurality of EEG signals into digital data values of eight 3-byte unsigned integer format in a little endian format that each represents an unsigned integer; And calculating an average value by dividing the total of the converted digital data values by the number of the plurality of EEG signals.

The plurality of EEG signals may be selected from the group consisting of a Delta Wave, a Theta Wave, a Low Alpha Wave, a High Alpha Wave, a Low Beta Wave, (High Beta Wave), a Low Gamma Wave, and a Mid Gamma Wave.

The step of determining the driver's drinking state may determine whether the calculated average value is included in the average values of the drinking state range included in the driver state range information stored in advance in the storage unit.

The classifying of the drowsiness state or the excitement state may include classifying the average value calculated from the regenerated EEG signal into average values of the drowsiness state range included in the driver state range information previously stored in the storage unit or average values of the excitation state range Can be determined.

According to the embodiment of the present invention, the EEG is measured in real time, eight EEG signals are extracted from the measured EEG signals, an average value is calculated, and the driver's state is analyzed through the analysis of the calculated average value. And an apparatus and method for controlling the safe operation of the vehicle using the EEG signal capable of performing the function of providing the vehicle control signal for the EEG signal.

According to the embodiment of the present invention, a function of classifying the driver's state into one of drowsiness, excitement, and alcohol is calculated from the calculated average value, and a vehicle control signal for safe driving corresponding to each state is provided The present invention can provide an apparatus and method for controlling safe operation of a vehicle using an EEG signal.

According to the embodiment of the present invention, when the driver's state is a drinking state, the controller classifies the alcohol state into an alcohol state below an allowable blood alcohol concentration or an abnormal state, and provides a vehicle control signal for safe operation corresponding to each state The present invention can provide an apparatus and method for controlling safe operation of a vehicle using an EEG signal.

1 is a block diagram illustrating an apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention.
2 (a) and 2 (b) are flowcharts illustrating a method for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention.
FIG. 3 is a graph showing the highest value among average values of waveforms of brain waves according to the driver's condition according to the embodiment of the present invention. FIG.
FIG. 4 is a graph illustrating a minimum value of average values of waveforms of brain waves according to the driver's condition according to an embodiment of the present invention. FIG.

Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the contents described in the accompanying drawings. However, the present invention is not limited to or limited by the exemplary embodiments. Like reference numerals in the drawings denote members performing substantially the same function.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software .

The storage unit according to an embodiment of the present invention may include all kinds of recording media in which programs and data are stored so that the storage medium can be read by a computer system. For example, a punch card, a paper tape, a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a flash-EPROM, Read only memory (ROM), a random access memory (RAM), a compact disk (CD), a compact disk read-only memory (CD-ROM), a digital video disk (DVD) , A flexible disk, an optical data storage device, a hard disk drive (HDD), a solid state drive (SSD), a solid state hybrid drive (SSHD), and an embedded multimedia card (eMMC) . And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet).

First, the following terms will be explained in order to facilitate understanding of an apparatus and method for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention.

EEG (Electroencephalography) according to an embodiment of the present invention refers to an electrical signal waveform generated by measuring an EEG from a driver through an EEG extractor equipped with an apparatus for controlling a safe operation of a vehicle using an EEG signal .

In addition, an apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention can detect the state of the driver through four signals of EEG measured by a driver, such as a normal state, a drowsy state, Respectively.

In addition, the driver's drinking state according to the embodiment of the present invention may be classified into a state below the permissible blood alcohol concentration or a state with the permissible blood alcohol concentration abnormality.

In addition, an apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention can extract eight types of EEG signals from EEG signals measured by a driver. The eight types of EEG signals include Delta Wave, Theta Wave, Low Alpha Wave, High Alpha Wave, Low Beta Wave, (High Beta Wave), a Low Gamma Wave, and a Mid Gamma Wave, and each EEG signal may have a unique frequency band. For example, an apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention separates signals corresponding to respective unique frequency bands from EEG signals measured by a driver, Can be extracted.

Eight kinds of EEG signals according to the embodiment of the present invention can be converted into digital data values representing an unsigned integer. The value of the digital data can be represented by a format of eight 3-byte unsigned integers in a little endian format.

Also, the storage unit according to the embodiment of the present invention may store the setting cycle information, the setting frequency information, the driver condition range information, and the permissible blood alcohol concentration delta wave value in advance.

The set period information according to the embodiment of the present invention is a device for controlling the safe operation of the vehicle using the EEG signal according to the embodiment of the present invention extracts 8 types of EEG signals from the EEG signals measured by the driver, The total sum of the digital data values each representing eight types of EEG signals and calculating a mean value of the calculated total sum may be included.

The set frequency information according to the embodiment of the present invention is a device for controlling the safe operation of the vehicle using the EEG signal according to the embodiment of the present invention extracts eight types of EEG signals from the EEG signal measured by the driver, The total number of digital data values representing eight types of EEG signals, and the number of times of calculating the average value of the total sum calculated according to the set period.

The apparatus for controlling the safe operation of the vehicle using the EEG signal according to the embodiment of the present invention extracts 8 types of EEG signals from the EEG signals measured by the driver, The total sum of the digital data values representing the different types of EEG signals, and multiplying the total sum calculated according to the set period by 1/8.

In addition, the average value according to the embodiment of the present invention can be calculated a plurality of times by a preset number of times indicated by the setting number information during a predetermined period indicated by the setting period information.

The maximum average value according to an embodiment of the present invention means an average value having a maximum value among a plurality of calculated average values.

The minimum average value according to an embodiment of the present invention means an average value having a minimum value among a plurality of calculated average values.

The driver state range information according to the embodiment of the present invention may include information of values of a minimum average value or a maximum average value or less of the respective states of the driver.

In addition, the driver status range information according to the embodiment of the present invention may include at least one of average value information of the drowsiness state range, average value information of the normal state range, average value information of the excitement state range, and average value information of the drinking state .

The average value information of the drowsiness state range according to the embodiment of the present invention may include information of average values having a value greater than or equal to a minimum average value indicating a drowsy state of the driver. In addition, the average values included in the average value information of the drowsiness state range may have digital data values smaller than the average values included in the average value information of the normal state range.

The average value information of the range of the non-normal state according to the embodiment of the present invention may include information of average values having a value from a minimum average value to a maximum average value that indicate a driver's normal condition. The average values included in the average value information of the range of the normal state include average values included in the average value information of the range of the average value of the drowsiness state range or the average value of the information about the average value of the excitement state range, Lt; RTI ID = 0.0 > value. ≪ / RTI >

The digital data values converted from the delta waves among the eight EEG signals constituting the average values of the range of the drinking state according to the embodiment of the present invention are converted from the delta waves among the eight EEG signals constituting the average values of the excitation state, May have values that exceed the data values.

The blood alcohol concentration delta wave value according to the embodiment of the present invention may mean a digital data value that is a delta wave-converted digital data value indicating the blood alcohol concentration allowed in the Road Traffic Law among eight EEG signals.

The start-on state according to the embodiment of the present invention may indicate a state in which the vehicle can be started.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram illustrating an apparatus for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention. Referring to FIG. 1, an apparatus 100 for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention includes an EEG extractor 110, a storage unit 120, a controller 130, 140).

The EEG extractor 110 may generate an EEG signal in real time by measuring the EEG from the driver under the control of the controller 130. For example, the EEG extractor 110 is implemented as a wearable device so that the driver is not disturbed by the operation, measures the EEG of the driver under the control of the controller 130, generates an EEG signal converted into an electrical signal by the measured EEG To the control unit 130.

The EEG extractor 110 may transmit the EEG signal generated according to the control of the controller 130 through a wired cable connected to the controller 130 as well as a wireless communication system.

The storage unit 120 may store the setting period information, the setting frequency information, the driver condition range information, and the permissible blood alcohol concentration delta wave value in advance.

The driver state range information may indicate information that can classify the driver's state into one of a plurality of states. The plurality of states may include a drowsy state, a normal state, a drinking state, and an excited state.

Further, the driver state range information includes average value information of the drowsiness state range for determining the drowsiness state, average value information of the normal state range for determining the normal state, average value information of the excitation state range for determining the excitation state, And the average value information of the drinking state to be used.

The vehicle control unit 140 includes an audio control unit 141 that can control the audio of the vehicle under the control of the control unit 130, an emergency light control unit 142 that can control the emergency light of the vehicle, And a start control unit 143. [

The controller 130 may include an EEG processor 131, a driver state classifier 132, an allowed blood alcohol concentration determiner 133, and a vehicle control signal generator 134.

The EEG processing unit 131 generates an EEG signal through the EEG extractor 110 and extracts a plurality of EEG signals from the generated EEG signals. For example, the EEG processing unit 131 generates an EEG signal through the EEG extractor 110, and receives the EEG signal generated from the EEG extractor 110 to extract a plurality of EEG signals. The plurality of EEG signals may include eight types of EEG signals consisting of delta waves, seta waves, low alpha waves, high alpha waves, low beta waves, high beta waves, low gamma waves and middle gamma waves. In addition, the EEG processing unit 131 may store the extracted EEG signals in the storage unit 120 in real time.

Thereafter, the EEG processing unit 131 may calculate an average value from the extracted EEG signals. For example, the EEG processing unit 131 may convert the extracted eight types of EEG signals into digital data values each representing an unsigned integer. Thereafter, the EEG processing unit 131 calculates the sum of the converted digital data values, and calculates the average value by multiplying the calculated sum by 1/8.

Thereafter, the EEG processing unit 131 may transmit the calculated average value to the driver state classifying unit 132. [

Thereafter, the driver state classifying unit 132 may determine whether the driver is in the drunk state based on the average value received from the EEG processor 131 and the driver state range information stored in advance in the storage unit 120. For example, when the average value transmitted from the EEG processing unit 131 matches the average value of at least one of the average value information of the drinking state included in the driver state range information, the driver state classifying unit 132 determines the driver's state as the drunk driving state can do.

As a result of the determination, if the driver is not in a drinking state, the driver state classifying unit 132 may generate an unheated state signal indicating that the driver is not in a state of being drunk and may transmit the unborn state signal to the vehicle control signal generating unit 134.

Thereafter, the vehicle control signal generating section 134 can generate a starting state permitting signal that allows starting of the vehicle. The vehicle control signal generation unit 134 may transmit the generated start state permission signal to the start control unit 143 of the vehicle control unit 140. [ The startup state permission signal may include information allowing other installed electronic devices of the vehicle to generate and deliver an ignition signal when the driver inserts a key into the key box and rotates or generates a signal related to startup.

Thereafter, the startup control unit 143 of the vehicle control unit 140 can deliver the startup state permission signal received from the vehicle control signal generation unit 134 to the ECU (not shown) mounted on the vehicle.

Then, the EEG processing unit 131 receives EEG signals from the EEG extractor 110 in real time, and extracts EEG signals from the received EEG signals. In addition, the EEG processing unit 131 may calculate an average value from the extracted EEG types of EEG signals.

Thereafter, the driver state classifying unit 132 may classify the driver's state into a drowsy state, a normal state, and an excited state based on the received average value and the driver state range information stored in the storage unit 120 in advance. The driver state classifying unit 132 may generate at least one of a drowsiness state signal indicating a driver's drowsiness state and an excitation state signal indicating an driver's state of excitement and may transmit the signal to the vehicle control signal generation unit 134.

In addition, when classifying the driver's state into a drowsy state, the driver state classifying unit 132 may use the average value calculated from the EEG signals measured for 3 minutes before and after the classification through the EEG extractor 110 from the classification point.

In addition, when classifying the driver's state into an excited state, the driver state classifier 132 may use the average value calculated from the EEG signal measured for 1 minute through the EEG extractor 110 from the classification point.

Thereafter, the vehicle control signal generator 134 may receive at least one signal of the drowsiness state signal and the excitation state signal from the driver state classifier 132.

Thereafter, the vehicle control signal generating section 134 may include at least one of a drowsiness state vehicle control signal, an excitation state vehicle control signal, a drinking state vehicle control signal, and a vehicle activation signal.

Thereafter, the vehicle control signal generating unit 134 may transmit at least one of the generated drowsy state vehicle control signal, the excited state vehicle control signal, the drinking state vehicle control signal, and the vehicle's operation signal to the vehicle control unit 140 .

The drowsy state vehicle control signal may include an audio control signal capable of controlling audio provided in the vehicle as a signal corresponding to the drowsy state signal and an emergency light control signal capable of controlling an emergency light provided in the vehicle.

The excitation state vehicle control signal may include an audio control signal capable of controlling audio provided in the vehicle as a signal corresponding to the excitation state signal and an emergency light control signal capable of controlling an emergency light provided in the vehicle.

The audio control signal included in the drowsy state vehicle control signal is received by the audio control unit 141 provided in the vehicle control unit 140 from the vehicle control signal generation unit 134, (Not shown) to output at least one of an alarm sound and a voice message stored in advance in the storage unit 120.

The emergency light control signal included in the drowsy state vehicle control signal is received by the emergency control section 142 provided in the vehicle control section 140 from the vehicle control signal generation section 134 and is supplied to the vehicle And information for instructing to drive repeatedly flashing through an emergency light (not shown).

The audio control unit 141 included in the vehicle control unit 140 controls the audio control unit 141 based on the audio control signal received from the vehicle control signal generating unit 134 and stores the audio control signal in advance in the storage unit 120 through a speaker An alarm sound, and a voice message.

The audio control unit 141 provided in the vehicle control unit 140 receives the audio control signal from the vehicle control signal generation unit 134 and outputs the audio control signal to the storage unit 120 through a speaker (not shown) And outputting at least one of an alarm sound and a voice message stored in advance.

Thereafter, the emergency light control unit 142 provided in the vehicle control unit 140 can drive the vehicle through an emergency light (not shown) provided in the vehicle, in accordance with the emergency light control signal transmitted from the vehicle control signal generation unit 134. [

Thereafter, the vehicle control signal generating unit 134 can determine whether the vehicle is turned off through the start control unit 143 provided in the vehicle control unit 140. If the start-up of the vehicle is on, the operation of extracting the brain waves of the driver can be re-executed.

When the driver is in the drinking state, the driver state classifying unit 132 generates a drinking state signal indicating the driver's drinking state, and outputs the generated drinking state signal and the average value received from the EEG processing unit 131 to the permissible blood alcohol concentration And transmits it to the determination unit 133.

Thereafter, the permissible blood alcohol concentration determination unit 133 can determine whether the blood alcohol concentration of the driver is less than the permissible blood alcohol concentration from the EEG signal measured by the driver. For example, the permissible blood alcohol concentration determination unit 133 recognizes that the driver is in the drinking state through the received drinking state signal, and determines the permissible blood alcohol concentration from the delta wave among the eight EEG signals constituting the average values received from the driver state classifying unit 132 It is possible to judge whether the blood alcohol concentration of the driver is less than the allowable blood alcohol concentration by judging whether the digital data value is less than the pre-stored blood alcohol concentration delta value stored in the storage unit 120. [

As a result of the determination, if the driver's blood alcohol concentration is less than the permissible blood alcohol concentration, the permissible blood alcohol concentration determination unit 133 determines a permissible alcohol concentration sublimation alcohol state signal including information indicating that the driver has undergone the alcohol drinking less than the permissible alcohol concentration And transmits it to the vehicle control signal generation unit 134.

Thereafter, the vehicle control signal generating unit 134, when the alcohol status signal of less than the permissible alcohol concentration is transmitted from the permissible blood alcohol concentration determination unit 133, notifies the driver of the drinking state of the alcohol- Lt; / RTI >

Thereafter, the vehicle control signal generating unit 134 may transmit the generated drinking state vehicle control signal to the audio control unit 141 and the emergency light control unit 142 of the vehicle control unit 140. The drinking state vehicle control signal may include an audio control signal capable of controlling audio provided in the vehicle as a signal corresponding to the alcohol state signal of less than the allowable alcohol concentration and an emergency light control signal capable of controlling an emergency light provided in the vehicle .

The audio control unit 141 provided in the vehicle control unit 140 receives the audio control signal from the vehicle control signal generation unit 134 and outputs the audio control signal to the storage unit 120 through a speaker (not shown) And outputting at least one of an alarm sound and a voice message stored in advance.

Thereafter, the emergency light control unit 142 provided in the vehicle control unit 140 can drive the vehicle through an emergency light (not shown) provided in the vehicle, in accordance with the emergency light control signal transmitted from the vehicle control signal generation unit 134. [

As a result of the determination, when the driver's blood alcohol concentration is equal to or higher than the permissible blood alcohol concentration, the permissible blood alcohol concentration determination unit 133 generates a permissible alcohol concentration abnormality drinking state signal including information indicating that the driver has consumed more than the permissible alcohol concentration And transmits it to the vehicle control signal generating unit 134.

Thereafter, the vehicle-control-signal generating unit 134, when receiving the alcohol-status abnormality alcohol concentration abnormality signal from the permissible blood alcohol concentration determination unit 133, notifies the driver of the vehicle including command information for restricting the start- And can generate a visible sustain signal.

Thereafter, the vehicle control signal generation unit 134 may transmit the generated vehicle activation signal to the startup control unit 143 of the vehicle control unit 140. [

In addition, the vehicle control signal generating unit 134 may re-execute the process of extracting the brain waves of the driver through the EEG extractor 110.

Thereafter, the startup control unit 143 provided in the vehicle control unit 140 allows a visible state in which the electronic device mounted on the vehicle can be driven in accordance with the received vehicle activation signal, and the engine is ignited or the electric motor The starting state that is driven is not allowed.

The control unit 130 of the apparatus 100 for controlling safe operation of the vehicle using the EEG signal described with reference to FIG. 1 can generate an EEG signal through the EEG extractor 110. Also, the controller 130 extracts a plurality of EEG signals from the generated EEG signals, and calculates an average value of the extracted EEG signals. The plurality of EEG signals may be converted into digital data values each representing an unsigned integer. The value of the digital data can be represented in the format of eight 3-byte unsigned integers in the endian format. The plurality of EEG signals may include a delta wave, a seta wave, a low alpha wave, a high alpha wave, a low beta wave, a high beta wave, a low gamma wave and a middle gamma wave.

In addition, the controller 130 may determine the driver's state as one of a plurality of states based on the calculated average value and the driver state range information stored in the storage unit 120 in advance. The plurality of states may include a drowsy state, a normal state, a drinking state, and an excited state.

Also, the control unit 130 may generate a vehicle control signal corresponding to the determined driver's state.

The control unit 130 may control at least one of audio, emergency, and start of the vehicle according to the vehicle control signal generated through the vehicle control unit 140. [

Each element of the apparatus 100 for controlling the safe operation of the vehicle using the EEG signal is separately shown in order to show that it can be functionally and logically separated, It does not mean that it is implemented in a separate code.

In this specification, each function means a functional and structural combination of hardware for carrying out the technical idea of the present invention and software for driving the hardware. For example, each functional unit may refer to a logical unit of a predetermined code and a hardware resource for executing the predetermined code, and may be a code physically connected to the functional unit, But can be easily deduced to the average expert in the field of the invention.

Hereinafter, an operation of a method for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention will be described with reference to the accompanying drawings.

2 (a) and 2 (b) are flowcharts illustrating a method for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention. Referring to FIG. 2, a controller 130 of an apparatus 100 for controlling safe operation of a vehicle using an EEG signal according to an embodiment of the present invention generates a first EEG signal of a driver through an EEG extractor 110 (201). For example, the control unit 130 can extract eight kinds of EEG signals from the EEG signals generated through the EEG extractor 110. FIG. EEG types of EEG signals may include delta waves, seta waves, low alfa waves, high alfa waves, low beta waves, high beta waves, low gamma waves and middle gamma waves. In addition, the control unit 130 may store the extracted EEG waveforms in the storage unit 120. FIG.

Thereafter, the EEG processing unit 131 may calculate the first average value of the extracted EEG signals. For example, the EEG processing unit 131 may convert eight types of EEG signals into digital data values representing an integer without sign. Then, the EEG processing unit 131 can calculate an average value from each of the converted digital data values.

Thereafter, the controller 130 may determine the drunk state of the driver from the calculated first average value and the driver state range information stored in advance in the storage unit 120 (step 202). For example, when the calculated first mean value is equal to at least one average value of the average values of the drinking states included in the driver state range information stored in advance in the storage unit 120, the control unit 130 determines the driver's state as the drunk driving state can do.

As a result of the determination, if the driver is not in the drinking state, the control unit 130 may allow the vehicle to be turned on. For example, the control unit 130 may generate a start-on state permission signal that allows the vehicle to be turned on. Thereafter, the control unit 130 transmits the generated start-on state permission signal to the start control unit 143 of the vehicle control unit 140 to start the ECU (not shown) mounted on the vehicle through the start control unit 143 It is possible to generate and transmit an ignition signal to be turned on.

Thereafter, the controller 130 may generate the second brain wave signal of the driver through the EEG extractor 110 (204). For example, the control unit 130 may extract eight types of EEG signals from the second EEG signal generated through the EEG extractor 110. [ EEG types of EEG signals may include delta waves, seta waves, low alfa waves, high alfa waves, low beta waves, high beta waves, low gamma waves and middle gamma waves. In addition, the control unit 130 may store the extracted EEG waveforms in the storage unit 120. FIG.

Thereafter, the EEG processing unit 131 may calculate the second average value of the extracted EEG signals. For example, the EEG processing unit 131 may convert eight types of EEG signals into digital data values representing an integer without sign. Then, the EEG processing unit 131 can calculate an average value from each of the converted digital data values.

Thereafter, the controller 130 may classify the driver's state into one of a drowsy state, a normal state, and an excited state based on the calculated second mean value and the driver state range information stored in advance in the storage unit 120 205).

In addition, when classifying the driver's state into a drowsy state, the controller 130 may use an average value calculated from the EEG signal measured from the EEG signal through the EEG extractor 110 from the classification time point for three minutes before and after the classification.

When classifying the driver's state into an excited state, the controller 130 may use an average value calculated from the EEG signal measured for 1 minute through the EEG extractor 110 from the classification time point.

Thereafter, the controller 130 may generate a drowsy state signal indicating the drowsy state of the driver when the driver's state is classified as a drowsy state. In addition, when the driver's state is classified as an excited state, the control unit 130 can generate an excitation state signal indicating an excited state of the driver.

Thereafter, the control unit 130 may generate a vehicle control signal (206). The vehicle control signal may include at least one of a drowsiness state vehicle control signal, an excitation state vehicle control signal, a drinking state vehicle control signal, and a vehicle activation signal.

Thereafter, the control unit 130 may control at least one of audio and emergency lights provided in the vehicle according to the generated vehicle control signal (207). For example, the control unit 130 may control to repeatedly turn on and off the vehicle through an emergency light (not shown) provided in the vehicle according to the emergency light control signal included in the generated vehicle control signal. Also, the control unit 130 may be configured to output at least one of an alarm sound and a voice message stored in advance in the storage unit 120 through a speaker (not shown) provided in the vehicle according to an audio control signal included in the generated vehicle control signal Can be controlled.

Thereafter, the control unit 130 can determine whether the vehicle is turned off. For example, the control unit 130 may determine whether the vehicle is in the off state through the startup control unit 143 provided in the vehicle control unit 140 (step 208). If the vehicle is in the on-state, the controller 130 may proceed to step 203 and perform the corresponding process.

Meanwhile, when the driver is in a drinking state, the control unit 130 can determine whether the alcohol concentration in the blood of the driver is less than an allowable alcohol concentration (209). For example, the control unit 130 determines whether the digital data value converted from the delta wave among the eight EEG signals constituting the mean value calculated from the EEG signal generated by measuring the EEG signal of the driver is stored in the storage unit 120, It can be determined whether the blood alcohol concentration of the driver is less than the allowable blood alcohol concentration.

As a result of the determination, when the driver's blood alcohol concentration is less than the permissible blood alcohol concentration, the control unit 130 notifies the driver of the drinking state under the allowable alcohol concentration through the speaker (not shown) and the emergency light (not shown) Can be performed. For example, the control unit 130 may generate a drinking state vehicle control signal including an audio control signal and an emergency light control signal indicating a drinking state that is less than the permissible alcohol concentration of the driver. Thereafter, the control unit 130 may control to repeatedly drive the vehicle through the emergency light (not shown) provided in the vehicle according to the emergency light control signal included in the generated vehicle control signal. Also, the control unit 130 may be configured to output at least one of an alarm sound and a voice message stored in advance in the storage unit 120 through a speaker (not shown) provided in the vehicle according to an audio control signal included in the generated vehicle control signal Can be controlled.

Thereafter, the controller 130 moves to step 203 and performs the corresponding process.

If it is determined that the alcohol concentration of the driver is equal to or higher than the permissible alcohol concentration, the control unit 130 may control the vehicle to maintain the vehicle in the active state through the start control unit 143 of the vehicle control unit 140 (step 211) . For example, the control unit 130 may generate a vehicle activation signal including command information for limiting the activation state to prevent the driver from drunk driving. Thereafter, the control unit 130 may control the vehicle to maintain the vehicle in the active state through the start control unit 143 of the vehicle control unit 140. [

Thereafter, the controller 130 moves to step 201 and performs the corresponding process.

The methods according to exemplary embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. Program instructions to be recorded on the medium may be those specially designed and constructed for the present invention or may be known and available to those of ordinary skill in the computer software arts.

Hereinafter, each average value of brain waves according to the driver's condition according to the embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a graph illustrating a maximum value among average values of waveforms of EEG according to the driver's condition according to an embodiment of the present invention. Referring to FIG. 3, the controller 130 of the apparatus 100 for controlling safe operation of the vehicle according to the present invention may generate an EEG signal by measuring the brain waves of the driver through the EEG extractor 110 have.

Thereafter, the control unit 130 extracts eight kinds of EEG signals such as a Delta Wave, a Theta Wave, a Low Alpha Wave, a High Alpha Wave, Low Beta Wave, High Beta Wave, Low Gamma Wave and Mid Gamma Wave can be extracted.

Thereafter, the control unit 130 may calculate a plurality of average values by a predetermined number of times during the set period from the extracted EEG types of EEG signals, and extract an average value having a maximum value among the calculated plurality of average values. 8 kinds of EEG signals constituting an average value having a maximum value can be expressed by converting them into digital data values as shown in FIG. 3 by the control unit 130, respectively.

The average value having the maximum value shown in FIG. 3 is calculated by averaging the values of the average values of the drowsiness state range, the average values of the normal state range, the average values of the excitement state range, May be used as the maximum value that defines the range of at least one of the average values of the states.

4 is a graph showing a minimum value among the average values of waveforms of EEG according to the driver's condition according to the embodiment of the present invention. Referring to FIG. 4, the controller 130 of the apparatus 100 for controlling safe operation of the vehicle according to an embodiment of the present invention may generate an EEG signal by measuring a brain wave of a driver through an EEG extractor 110 have.

Thereafter, the control unit 130 extracts eight kinds of EEG signals such as a Delta Wave, a Theta Wave, a Low Alpha Wave, a High Alpha Wave, Low Beta Wave, High Beta Wave, Low Gamma Wave and Mid Gamma Wave can be extracted.

Thereafter, the control unit 130 may calculate a plurality of average values by the set number of times during the set period from the extracted EEG types of EEG signals, and may extract an average value having a minimum value among the calculated plurality of average values. The eight types of EEG signals constituting the average value having the minimum value can be converted into digital data values and represented by the controller 130 as shown in FIG.

The average value having the minimum value shown in FIG. 4 may be calculated from the average values of the drowsiness state range, the average values of the normal state range, the average values of the excitement state range, As a minimum value that defines the range of at least one of the average values.

Although the present invention has been described with reference to the accompanying drawings and the foregoing embodiments, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope of the present invention as defined by the appended claims.

100: a device for controlling the safe driving of a vehicle
110: EEG extractor
120:
130:
131: EEG processing unit
132: Driver status classification section
133: Permissible Blood Alcohol Concentration Judgment
134: vehicle control signal generation unit
140:
141: Audio control unit
142: Emergency light control unit
143:

Claims (14)

An EEG extractor for measuring an EEG from a driver and generating an EEG signal in real time;
Driver state range information indicating information that can be classified into one of a sleep state, a normal state, an excited state, and a drinking state, and an alcohol concentration delta wave value stored in advance in a storage unit;
A vehicle control unit capable of controlling audio, emergency, and start of the vehicle; And
The EEG signal is generated by the EEG extractor and the EEG signal is generated from the generated EEG signal using a Delta Wave, a Theta Wave, a Low Alpha Wave, a High Alpha Wave, Extracts a plurality of EEG signals including a Low Beta Wave, a High Beta Wave, a Low Gamma Wave, and a Mid Gamma Wave, The average value of the EEG signals is calculated by multiplying the EEG signals by digital data having a format of eight 3-byte unsigned integers each of which is a little endian representing an unsigned integer And calculating a sum of the values of the converted digital data by the number of the plurality of EEG signals, and calculating the state of the driver from the calculated average value and the driver state range information A state of being in the drowsy state, a normal state, an excited state and a drunk state, generating a vehicle control signal corresponding to the determined one state, and, in accordance with the generated vehicle control signal through the vehicle control section And a control unit for controlling at least one of the audio, the emergency light, and the start-up,
Wherein the control unit determines whether the driver's blood alcohol concentration is less than an allowable blood alcohol concentration when the driver's condition is determined to be a drinking state and if the blood alcohol concentration is less than the allowable blood alcohol concentration, And controls the operation of the audio or the emergency light according to the drinking state vehicle control signal generated through the vehicle control unit. When the driver's alcohol concentration is equal to or higher than the permissible blood alcohol concentration, the driver is prevented from drinking driving Further comprising generating a vehicle activation signal including command information for limiting a starting state of the vehicle and controlling the starting of the vehicle in accordance with the vehicle activation signal generated through the vehicle control section To control the safe operation of the vehicle Device.
delete delete delete The apparatus of claim 1,
Wherein the control unit permits a start-on state through the vehicle control unit, regenerates an EEG signal through the EEG extractor, determines an average value calculated from the regenerated EEG signal, Classifying the state into one of the drowsy state or the excited state from the range information, generating a vehicle control signal corresponding to the classified drowsy state or the excited state, and, in accordance with the vehicle control signal generated through the vehicle control section Wherein the control unit controls the operation of the audio or the emergency light.
delete The apparatus of claim 1,
Determining whether the blood alcohol concentration is less than the allowable blood alcohol concentration by determining whether the digital data value converted from the delta wave among the plurality of EEG signals constituting the average value has a value less than the blood alcohol concentration delta wave value A device for controlling the safe operation of the vehicle using the EEG signal.
Generating an EEG signal through an EEG extractor;
Determining a drunk state of the driver from the generated EEG signal;
Allowing the vehicle to be turned on when the vehicle is not in the drinking state;
Regenerating an EEG signal through the EEG extractor;
Classifying the driver's state into a drowsy state or an excited state from the regenerated EEG signal;
Generating a vehicle control signal corresponding to the classified drowsy state or excited state; And
And controlling operation of the audio or emergency light of the vehicle in accordance with the generated vehicle control signal,
Determining whether the driver's blood alcohol concentration is less than an allowable blood alcohol concentration when the driver is determined to be in a drinking state in the step of determining a driver's drinking state from the generated EEG signal;
Controlling the operation of the audio or the emergency light when the blood alcohol concentration is less than the allowable blood alcohol concentration; And
Further comprising the step of: maintaining the active state of the vehicle when the blood alcohol concentration is equal to or higher than the permissible blood alcohol concentration.
delete 9. The method of claim 8, wherein maintaining the active state of the vehicle further comprises:
Generating a vehicle activation signal including command information for limiting a starting state of the vehicle so as to prevent the driver from drunk driving; And
Controlling the starting of the vehicle in accordance with the generated vehicle activation signal; The method comprising the steps of: (a) inputting an EEG signal;
The method as claimed in claim 10, wherein the method for controlling safe operation of the vehicle using the EEG signal comprises:
Extracting a plurality of EEG signals having respective unique frequency bands from EEG signals generated through the EEG extractor before the step of determining a driver's drinking state;
Converting the extracted plurality of EEG signals into digital data values of eight 3-byte unsigned integer format in a little endian format that each represents an unsigned integer; And
Calculating an average value by dividing the total of the converted digital data values by the number of the plurality of EEG signals; The method comprising the steps of: (a) inputting an EEG signal;
12. The method according to claim 11,
Delta Wave, Theta Wave, Low Alpha Wave, High Alpha Wave, Low Beta Wave, High Beta Wave, Low A low gamma wave, and a mid gamma wave. The method for controlling safe operation of a vehicle using the EEG signal.
13. The method according to claim 12, wherein the step of determining the driver '
And determining whether the calculated average value is included in average values of the range of the drinking state included in the driver state range information stored in advance in the storage unit.
14. The method of claim 13, wherein classifying the drowsy state or excitement state comprises:
And determining whether the average value calculated from the regenerated EEG signal is included in average values of the drowsiness state range or average values of the excitement state range included in the driver state range information stored in advance in the storage unit. For controlling the safe operation of the vehicle.

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