KR102552714B1 - Wearable device for a vehicle and operating method thereof - Google Patents

Abstract

A method of operating a wearable device having a smart key function is disclosed. The operation method may include connecting the wearable device, the terminal, and the electronic control device for a vehicle through blue communication; calculating, by the wearable device, a driver condition index based on information received from the terminal and information received from the vehicle electronic control device; and generating, by the wearable device, a notification signal corresponding to the driver condition index, and transmitting the notification signal to the terminal and the vehicle electronic control device.

Description

Vehicle wearable device and its operating method {WEARABLE DEVICE FOR A VEHICLE AND OPERATING METHOD THEREOF}

The present invention relates to a wearable device, and more particularly, to a wearable device that interworks with a vehicle.

As is well known, a wearable device is a next-generation electronic device that is developed to be small and light so that it can be worn on the body or clothing so that the user can freely use it during movement or activity and can communicate with the user at the closest place to the body.

Wearable devices are used in various fields such as fitness, wellness, healthcare, medical, infotainment, military, and industrial.

On the other hand, when considering wearability, a wearable device can be used as a very useful device as a device that replaces a smart key (or FOB key) for a vehicle. That is, if the wearable device has a smart key (or FOB key) function, the driver may be able to solve the inconvenience of having to carry the smart key (or FOB key).

In addition to these smart key functions, if it is possible to provide the driver with a quantified condition of the driver by using the unique function of the wearable device, the driver recognizes his/her condition through the wearable device and acts safely (e.g. If you do, you will be able to take a break). However, development of a wearable device that simultaneously provides a smart key function and a function to assist safe driving is still insufficient.

Accordingly, an object of the present invention is to provide a wearable device that simultaneously provides a smart key function and a function to assist safe driving, and an operating method thereof.

A wearable device having a smart key function for a vehicle according to an aspect of the present invention for achieving the above object includes a communication module connecting the wearable device to a terminal and an electronic control device for a vehicle through blue communication; and the wearable device calculates a driver condition index based on the information received from the terminal and the information received from the vehicle electronic control device, generates a notification signal corresponding to the driver condition index, and transmits the information through the communication module. and a processor module that transmits a notification signal to the terminal and the vehicle electronic control device.

A method of operating a wearable device having a smart key function for a vehicle according to another aspect of the present invention includes connecting the wearable device, a terminal, and an electronic control device for a vehicle through blue communication; calculating, by the wearable device, a driver condition index based on information received from the terminal and information received from the vehicle electronic control device; and generating, by the wearable device, a notification signal corresponding to the driver condition index, and transmitting the notification signal to the terminal and the vehicle electronic control device.

According to the present invention, since the wearable device is implemented to have a smart key function, it is possible to enter and start the vehicle only by wearing the wearable device, so that the driver does not need to carry a separate smart key.

In addition, by providing a function to check the driver's condition based on the wearable device's original function, that is, the heart rate measurement function and the step measurement function, the driver can adjust the driving time according to his or her condition confirmed by the wearable device. Guidelines can be provided to promote safe driving.

1 is a block diagram of a wearable device according to an embodiment of the present invention.
FIG. 2 is a block diagram schematically illustrating an internal configuration of the wearable device shown in FIG. 1 .
3 is a signal waveform diagram of an acceleration sensor used to calculate a driver's sleeping time according to an embodiment of the present invention.
4 is a flowchart illustrating an operating method of the wearable device for a vehicle shown in FIGS. 1 and 2 .

Various embodiments of the present invention may apply various changes and have various embodiments, and specific embodiments are illustrated in the drawings and related detailed descriptions are described. However, this is not intended to limit the various embodiments of the present invention to specific embodiments, and should be understood to include all changes and/or equivalents or substitutes included in the spirit and technical scope of the various embodiments of the present invention. In connection with the description of the drawings, like reference numerals have been used for like elements.

“Includes” can be used in various embodiments of the present invention. Expressions such as “may include” or the like indicate the existence of a corresponding disclosed function, operation, or component, and do not limit one or more additional functions, operations, or components. In addition, in various embodiments of the present invention, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or other features, numbers, steps, operations, components, parts, or combinations thereof, or any combination thereof, is not precluded from being excluded in advance.

In various embodiments of the present invention, expressions such as “or” include any and all combinations of the words listed together. For example, "A or B" may include A, may include B, or may include both A and B.

Expressions such as "first", "second", "first" or "second" used in various embodiments of the present invention may modify various elements of various embodiments, but do not limit the elements. don't For example, the above expressions do not limit the order and/or importance of corresponding components. The above expressions may be used to distinguish one component from another. For example, the first user device and the second user device are both user devices and represent different user devices. For example, a first component may be referred to as a second component without departing from the scope of various embodiments of the present invention, and similarly, the second component may also be referred to as a first component.

When an element is referred to as being "connected" or "connected" to another element, the element may be directly connected or connected to the other element, but with the other element. It should be understood that other new components may exist between the other components. On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it will be understood that no new element exists between the element and the other element. should be able to

Terms used in the embodiments of the present invention are only used to describe specific embodiments, and are not intended to limit the embodiments of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which an embodiment of the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in various embodiments of the present invention, ideal or excessively formal not interpreted as meaning

The wearable device of the present invention has a vehicle smart key (Fob) function, and thus can replace the vehicle smart key (Fob) enabling entry and starting of the vehicle.

In addition, the wearable device of the present invention digitizes the driver's condition (or condition) by using (1) heart rate measurement, (2) step count measurement, etc., and provides it to the driver. By doing this, the driver can ultimately promote safe driving by adjusting driving time according to his or her condition provided through the wearable device.

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

1 is a block diagram of an entire system including a wearable device according to an embodiment of the present invention.

Referring to FIG. 1 , the entire system according to an embodiment of the present invention includes a wearable device 100 worn on a specific body part of a user, a terminal 200 possessed by the user, and an electronic control device for a vehicle installed in a vehicle 30 ( 300).

The wearable device 100 communicates with the terminal 200 using short-range wireless communication. In addition, the wearable device 100 communicates with the vehicle electronic control device 300 using short range wireless communication.

Short-range wireless communication may include, for example, WiFi communication, Bluetooth (BLE) communication, Near Field Communication (NFC), and the like. Although not particularly limited, short-distance wireless communication applied in this embodiment is assumed to be Bluetooth communication.

The wearable device 100 is based on information acquired according to its unique function, information received from the terminal 200 using Bluetooth communication, and information received from the vehicle electronic control device 300 using Bluetooth communication, etc. The driver condition index, which quantifies the driver's condition, is calculated. In addition, the wearable device 100 may generate step-by-step notification information for safe driving according to the calculated driver condition index, and transmit the generated notification information to the terminal and/or the vehicle electronic control device 300 .

The terminal 200 is a device having a Bluetooth communication function, and transmits various pieces of information necessary for calculating the driver's condition index to the wearable device 100 using Bluetooth communication. In addition, the terminal 200 may receive step-by-step notification information for safe driving from the wearable device 100, and may process and output the notification information in various information forms to provide the driver with the notification information. Such a terminal 200 may be, for example, a smartphone, a tablet personal computer (PC), or a mobile phone.

The vehicle electronic control device 300 is a device having a Bluetooth communication function, and transmits various pieces of information necessary for calculating a driver's condition index to the wearable device 100 using Bluetooth communication. For example, as described below, the vehicle electronic control device 300 may receive vehicle speed information necessary for calculating the driver condition index from the engine control unit 311 and transmit it to the wearable device 100 in real time. The vehicle electronic control device 300 may receive vehicle speed information from the engine control unit 311 using CAN (Controller Area Network) communication 32 .

In addition to the engine control unit 311, the vehicle electronic control device 300 communicates with a plurality of peripheral devices such as the AVN unit 313, the navigation unit 315, and other units 319 using CAN communication. can

When the vehicle electronic control device 300 receives notification information for safe driving according to the driver's condition index from the wearable device 100 using Bluetooth communication, the notification information is transmitted to the AVN unit 313 and navigation using CAN communication. unit 315.

The AVN unit 313 may process and output notification information from the vehicle electronic control device 300 in various information forms to provide to the driver.

The navigation unit 315 may perform a process of searching for a rest area around the vehicle 30 according to notification information from the vehicle electronic control device 300 and automatically guiding the vehicle to the searched rest area.

FIG. 2 is a block diagram schematically illustrating an internal configuration of the wearable device shown in FIG. 1 .

Referring to FIG. 2 , the wearable device 100 includes a battery 110, a processor module 120, a smart key module 130, a user interface 140, a sensor 150, It includes a memory 160, a communication module 170, a display module 180 and a vibration module 190. These components 110 to 190 may be connected to communicate with each other by the system bus 50 .

The battery 110 supplies operating power to components 120 to 180 in the wearable device 100, and each component 120 to 180 may start a given operation according to the operating power supplied from the battery 110. there is.

The processor module 120 calculates a driver condition index by digitizing the driver's condition using information received from the terminal 200 and the vehicle electronic control device 300 through the communication module 170 . To this end, the processor module 120 executes at least one algorithm associated with calculating the driver's condition index.

In addition, the processor module 120 generates step-by-step notification information according to the calculated driver condition index and transmits it to the terminal 200 and the vehicle electronic control device 300 through the communication module 170 .

To calculate the driver's condition index and generate an alarm signal, the processor module 120 may be implemented as hardware capable of various calculation processes. Hardware may include, for example, one or more general purpose microprocessors, digital signal processors (DSPs), hardware cores, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or any of these It can be implemented by combining.

Also, the processor module 120 may control and manage operations of the peripheral elements 110 and 130 to 190 . For example, the processor module 120 may control an operation start, operation end, or operation sequence of each of the peripheral elements 110 and 130 to 190 .

A process of calculating the driver condition index in the processor module 120 will be described in detail below.

The smart key module 130 is implemented to have smart key functions such as unlocking/locking a vehicle door, opening/closing a trunk, and remote starting. Accordingly, the wearable device 100 having the smart key module 130 can serve as a smart key wireless remote controller.

In order to serve as a smart key wireless remote controller, although not shown, the smart key module 130 is a LF receiver for receiving an LF authentication request signal from a smart key device (not shown) in the vehicle, the LF authentication request signal It may be implemented to include a microcontroller for processing driver information registered according to transmission to the smart key device, and an RF transmitter for transmitting the registered user information to the smart key device under control of the microcontroller.

The user interface 140 serves as an input means for receiving user input values, and may be implemented as, for example, a touch sensor or a tact switch.

The sensor 150 measures driver condition information necessary for calculating the driver condition index. Here, the driver condition information includes the driver's heart rate information and motion information (eg, number of steps, walking speed, etc.).

In order to measure the driver's condition information, the sensor 150 may include a heart rate monitoring (HRM) sensor 152 that measures heart rate and an acceleration sensor 154 (accelerometer) that measures the number of steps/stepping speed.

The memory 160 stores an algorithm related to driver condition index calculation and alarm signal generation executed by the processor module 120 and an algorithm related to a smart key function executed by the smart key module 130 .

In addition, the memory 160 temporarily or permanently stores intermediate data and final result data generated in the process of calculating the driver condition index executed by the processor module 120 . The memory 160 may include volatile memory and non-volatile memory. Volatile memory may be RAM or the like. Non-volatile memory may include ROM, EEPROM, hard disk, and the like.

The communication module 170 may be implemented to have a Bluetooth function for Bluetooth communication with the terminal 200 and the vehicle electronic control device 300 . Although shown as one communication module 170 in FIG. 2 , it may be implemented to include two communication modules independent of each other. For example, the communication module 170 may be configured to include a module for Bluetooth communication with the terminal 200 and a module for Bluetooth communication with the vehicle electronic control device 300 . The communication module 170 may include a suitable modem, amplifier filter, etc. to support wireless communication such as Bluetooth.

The display module 180 may display the calculation progress of the driver condition index performed by the processor module 120, or display intermediate data and final result data generated in the process of calculating the driver condition index. The display module 180, for example, may be implemented as an LCD or LED.

The vibration module 190 may generate a vibration corresponding to a notification signal generated by the processor module 120 step by step according to the driver's condition index. To this end, the vibration module 190, although not shown, may be implemented to include an electronic circuit that converts a notification signal into a driving signal and a small vibration motor that generates vibration with an intensity corresponding to the driving signal.

Hereinafter, a process of calculating the driver condition index in the processor module 120 will be described in detail.

To calculate the driver condition index, the processor module 120 calculates the driver's sleep index ( SI ) according to the driver's sleep time, the driver's fatigue index ( FI ₁ ), which naturally increases with time, A process of calculating the driver's fatigue index ( FI ₂ ) according to the driver's calorie-expenditure and the driver's fatigue index ( FI ₃ ) according to the driver's driving time is respectively executed.

When the sleep index ( SI ) and the three fatigue indexes ( FI ₁ , FI ₂ , and FI ₃ ) are calculated, the driver condition index can be calculated by Equation 1 below.

Hereinafter, a method of calculating the sleep index ( SI ) and the fatigue indexes (FI ₁ , FI ₂ , FI ₃ ) will be described.

Driver's sleep index ( SI ) of

For the calculation of the sleep index, a process of calculating the driver's sleep time is executed. The driver's sleep time may be calculated based on changes in the driver's movement.

The change in the driver's movement is determined from the change in the motion signal (acceleration signal) detected by the acceleration sensor (154 in FIG. can be detected.

As shown in FIG. 3, the amount of change in the moving signal is counted for a reference time (unit time) by counting the instant (zero crossing) when the motion signal (acceleration signal) crosses the reference threshold TH. can be a value

If the value counted during the reference time (unit time) is lower than the reference value, the driver may determine that the driver is in a sleeping state, and in the opposite case, the driver may determine that the driver is in a non-sleep state. The driver's sleep time may be calculated based on the counted value.

When the driver's sleep time is calculated, the sleep index for the currently calculated driver's sleep time may be calculated based on a table in which a relationship between the sleep index and the sleep time is previously defined.

The naturally increasing fatigue index ( FI _One ) of

The naturally increasing fatigue index ( FI ₁ ) can be calculated from the difference between the current time and the driver's wake-up time. Expressing this calculation process as an equation, it is as follows.

는 현재 시각과 운전자의 기상 시각 간의 차이값을 상기 피로 지수(FI ₁ )로 변환하기 위한 상수값이다. 한편, 운전자의 기상 시간은 운전자의 수면 시간으로부터 계산될 수 있다. here,

Is a constant value for converting the difference between the current time and the driver's wake-up time into the fatigue index ( FI ₁ ). Meanwhile, the driver's wake-up time may be calculated from the driver's sleeping time.

Fatigue index according to calorie consumption ( FI ₂ ) of

)으로부터 계산될 수 있다. 이러한 계산 과정을 식으로 표현하면, 아래와 같다.Fatigue index ( FI ₂ ) according to calorie consumption is a driver's calorie consumption and a constant value for converting the calorie consumption into the fatigue index ( FI ₂ ) (

) can be calculated from Expressing this calculation process as an equation, it is as follows.

The driver's calorie consumption may be calculated from driver information received from the terminal 200 described above. Here, driver information includes gender information, age information, height information, and weight information of the driver.

Calculation of calorie consumption based on driver information has various formulas developed in the past, and the feature of the present invention is not limited to calculating calorie consumption, so the description thereof is instead a description of a known calorie consumption calculation method. do.

Fatigue index according to driving time ( FI ₃ ) of

The calculation of the fatigue index ( FI ₃ ) according to driving time can be expressed by the following equation.

은 운전 시간을 피로 지수(FI ₃ )로 변환하기 위해 설정된 상수값이다. here,

Is a constant value set to convert the driving time into a fatigue index ( FI ₃ ).

Driving time can be viewed as the time the driver stays in the vehicle. This may be a time during which the wearable device 100 and the vehicle electronic control device 300 maintain a connection through blue communication.

When the Bluetooth connection with the wearable device 100 is completed, the vehicle electronic control device 300 counts the time using an internal timer (not shown) from the point of completion, and periodically recalls the counted time value. It is transmitted to the wearable device 100.

The wearable device 100 obtains the driving time based on the time value received from the vehicle electronic control device 300, and substitutes the obtained driving time into the above-described Equation 4 to obtain a fatigue index according to the driving time ( FI ₃ ) Calculate

Meanwhile, time during which the driver is taking a break in the vehicle cannot be regarded as driving time. Therefore, rest time in the vehicle should be excluded from the entire driving time.

Accordingly, the vehicle electronic control device 300 receives vehicle speed information indicating whether or not the vehicle is running from the engine control unit 311 connected through CAN communication, and based on the received vehicle speed information, a time value for maintaining the Bluetooth connection (counted The time value obtained by subtracting the driver's break time from the time value) may be transmitted to the wearable device 100 .

In order to deduct the driver's rest time in the vehicle from the time value (counted time value) during which the Bluetooth connection is maintained, the vehicle electronic control device 300 is configured to deduct the driver's rest time when the vehicle speed drops below a reference speed (eg, 10 km/h). Immediately after the point in time, the counting of the time value is stopped, and when the vehicle speed again rises above the reference speed, the counting of the time value during which the Bluetooth connection is maintained is resumed immediately after that point in time. In this way, the vehicle electronic control device 300 can accurately calculate the driver's driving time by subtracting the driver's break time from the time value for which the Bluetooth connection is maintained (the counted time value).

When the processor module 120 in the wearable device 100 completes the calculation of the sleep index ( SI ) and the three fatigue indices ( FI ₁ , FI ₂ , and FI ₃ ), the driver condition index according to Equation 1 described above Calculate

When the calculation of the driver condition index is completed, the processor module 120 generates a driver notification signal according to the calculated driver condition index and transmits the driver notification signal to the terminal 200 and/or the vehicle electronic control device 300 using Bluetooth communication. transmit

In one example, the vehicle electronic control device 300 processes the received notification signal into data that can be processed by the AVN unit 313 and transmits the data to the AVN unit 313 using CAN communication 32 . In response to the processed notification signal, the AVN unit 313 may generate and output the text “Because the condition index is low, avoid driving for a long time” through the display screen.

In another example, the vehicle electronic control device 300 processes the received notification signal and transmits it to the navigation unit 315 using the CAN communication 32, and the navigation unit 315 responds to the processed notification signal. Thus, a nearby rest stop closest to the current location of the vehicle may be automatically searched for, and route guidance may be performed to the searched rest stop.

In another example, the processor module 120 may transmit a driver notification signal to the vibration module 190, and the vibration module 190 may generate vibration according to the driver notification signal to call the driver's attention.

Similarly, the processor module 120 transmits a driver notification signal to the terminal 200 using the communication module 170, and the terminal 200 vibrates according to its own vibration function in response to the received driver notification signal. may generate a driver's attention.

As described above, the wearable device 100 of the present invention has a smart key module and serves as a smart key wireless remote controller, so a driver wearing the wearable device 100 does not need to carry a separate smart key.

Furthermore, the wearable device 100 of the present invention calculates the driver's condition index, which digitizes the driver's condition, using information provided from the terminal 200 and the vehicle electronic control device 300, respectively, using blue communication, and calculates A driver notification signal classified in stages according to the determined driver condition index is generated and provided to the terminal 200 and the vehicle electronic control device 300 .

By doing this, the driver recognizes his or her physical condition corresponding to the driver notification signal through the wearable device 100, the terminal 200, and the vehicle electronic control device 300, and based on the recognized result, various services for safe driving are obtained. A follow-up (e.g., rest) can be determined.

FIG. 4 is a flowchart illustrating a method of operating the wearable device for a vehicle shown in FIG. 1 . 1 to 3 may be referred to together to facilitate understanding of the description. In addition, for convenience of explanation, descriptions overlapping with those referring to FIGS. 1 to 3 will be briefly described or omitted. In addition, it is assumed that the performer of each step below is the wearable device 100 (or processor module 120) unless otherwise specified.

Referring to FIG. 4 , first, in step S410, a process of connecting Bluetooth communication between the wearable device 100 and the terminal 200 is performed. In addition, a process of connecting Bluetooth communication between the wearable device 100 and the vehicle electronic control device 300 is performed.

For example, the wearable device 100 transmits a connection request message to the terminal 200 and the vehicle electronic control device 300, respectively, and the terminal 200 and the vehicle electronic control device 300 each respond to the connection request message By transmitting the connection acceptance message to the wearable device 100, Bluetooth communication between devices is connected. When the Bluetooth connection between devices is completed, data transmission between devices starts.

A more detailed description of the Bluetooth communication connection is replaced with a description of a known Bluetooth technology, for example, Bluetooth 4.1, Bluetooth 4.2, and Bluetooth 5.

Meanwhile, as described above, the vehicle electronic control device 300 counts the driver's driving time required to calculate the driving fatigue index ( FI ₃ ), and transmits it to the wearable device 100 using Bluetooth communication. In this case, the time at which the vehicle electronic control device 300 starts counting the driving time may be the time when the vehicle electronic control device 300 receives the connection request message or transmits the connection acceptance message.

Next, in step S420, the wearable device 100 calculates the current sleep index ( SI ) and fatigue index for the driver using information received from the terminal 200 and the vehicle electronic control device 300 through Bluetooth communication. ( FI _1, FI ₂ and FI ₃ ) is calculated and stored in the memory 160 .

The current sleep index ( SI ) is calculated from the driver's sleep time, and the driver's sleep time can be detected from the amount of change in the driver's motion signal detected by the acceleration sensor (154 in FIG. 2 ) provided in the wearable device 100. there is. When the driver's sleep time is calculated, a sleep index ( SI ) for the currently calculated driver's sleep time may be calculated with reference to a table predefined for a relationship between the sleep index and the sleep time.

Current Fatigue Index ( FI _1, FI ₂ and FI ₃ ) includes a naturally increasing fatigue index ( FI ₁ ), a fatigue index according to calorie consumption ( FI ₂ ), and a fatigue index according to driving time ( FI ₃ ).

The calculation of the naturally increasing fatigue index ( FI ₁ ) may be calculated by the above-described Equation 2, and a detailed description thereof is replaced by the above description. Fatigue index ( FI ₂ ) according to calorie consumption may be calculated by the above-described Equation 3, and a detailed description thereof is replaced by the above description. Fatigue index ( FI ₃ ) according to driving time may be calculated by the above-described Equation 4, and a detailed description thereof is replaced by the above description.

Subsequently, in step S430, the wearable device 100 compares the previous sleep index calculated at a previous time and the current sleep index calculated at the current time in the above-described step S420, and A process of comparing the fatigue index calculated in and the current fatigue index calculated in the present is performed.

Then, in step S440, if the previous sleep index and fatigue index and the current sleep index and fatigue index are not the same, the wearable device 100 converts the previous sleep index and fatigue index stored in the memory 160 into the current sleep index. A process of updating to index and fatigue index is performed. If the previous sleep index and fatigue index and the current sleep index and fatigue index are the same, steps S440 and S450 are not performed, and the process proceeds to step S460.

Subsequently, in step S450, the wearable device 100 determines the updated sleep index ( SI ) and fatigue index ( FI _1, FI ₂ and A process of calculating the current driver condition index using FI ₃ ) is performed. The current driver condition index can be calculated by the above-described Equation 1, and a detailed description thereof is replaced by the above description. Meanwhile, the above-described steps S420 to S440 are classified to help understanding of the description, and may be included in step S450.

Subsequently, in step S460, the wearable device 100 generates a notification signal corresponding to the current driver condition index, and transmits the generated notification signal to the terminal 200 and the vehicle electronic control device 300 using Bluetooth communication. The process of sending to is performed.

The notification signal is generated according to the result of comparing the driver condition index with a preset reference index. The reference index is an index that distinguishes between good and bad conditions of the driver. A driver condition index lower than the reference index is a condition in which the driver's condition is poor, that is, a condition in which the driver needs careful driving, and a driver whose condition is higher than the reference index. The condition index may be defined as a state in which the driver's condition is good, that is, a state in which safe driving can be performed. Accordingly, the wearable device does not generate a notification signal when the calculated current driver condition index is equal to or greater than the reference index.

Then, in step S470, the terminal 200 and the vehicle electronic control device 300 perform a process of generating various alarms corresponding to the notification signal of the wearable device 100. The alert may be a text-type guide phrase, audio-type alert sound, or vibration.

For example, the navigation unit 315 receiving the notification signal through the vehicle electronic control device 300 may automatically switch the route screen displayed on the display screen to a route screen that guides the vehicle to the nearest rest area from the current location. there is.

As another example, the AVN unit 313 receiving the notification signal through the vehicle electronic control device 300 may display an alert phrase such as 'Please avoid driving for a long time because the driver is in a bad condition' through the display screen. .

As another example, the wearable device 100 generates vibration using its own vibration function to call the driver's attention.

In the above, the alarm corresponding to the notification signal according to the driver condition index has been described, but it is not limited thereto, and an alarm corresponding to the notification signal according to each of the sleep index and fatigue index necessary for calculating the driver condition index may be generated. .

For example, the wearable device 100 generates a notification signal corresponding to the driving fatigue index ( FI ₃ ), transmits it to the navigation unit 315 through the vehicle electronic control device 300, and the navigation unit 315 According to the notification signal corresponding to the driving fatigue index ( FI ₃ ), the current route guidance screen may be switched to a route guidance screen for guiding a route to a rest area close to the current location of the vehicle.

In addition, the wearable device 100 generates a notification signal corresponding to the sleep index ( SI ), transmits it to the AVN unit 313 through the vehicle electronic control device 300, and the AVN unit 313 generates a notification signal corresponding to the sleep index (SI). According to the notification signal corresponding to the SI ), an alert phrase such as "Please avoid driving with a long sleep due to lack of sleep" may be displayed on the display screen.

As described above, the present invention is not limited to the configuration and method of the described embodiments, but the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

Claims (13)

In the operating method of a wearable device having a smart key function,
connecting the wearable device, the terminal, and the electronic control device for a vehicle through Bluetooth communication;
calculating, by the wearable device, a driver condition index based on information received from the terminal and information received from the vehicle electronic control device; and
generating, by the wearable device, a notification signal corresponding to the driver condition index, and transmitting the notification signal to the terminal and the vehicle electronic control device;
The step of calculating the driver condition index,
Calculating a fatigue index according to the counted driving time based on a comparison result between the vehicle speed and the reference speed after the communication connection of the Bluetooth communication; and
Calculating the driver condition index using the fatigue index according to the driving time
Method of operating a wearable device comprising a.
The method of claim 1, wherein the calculating of the driver condition index comprises:
calculating a sleep index according to a driver's sleep time based on a driver's motion variation measured by an acceleration sensor in the wearable device;
calculating a driver's first fatigue index, which naturally increases with time, based on the driver's wake-up time calculated from the sleeping time;
calculating a second fatigue index based on the driver's calorie consumption based on the information received from the terminal;
calculating a third fatigue index based on the driver's driving time based on the information received from the vehicle electronic control device; and
Calculating the driver condition index using the sleep index and the first to third fatigue indexes
Method of operating a wearable device comprising a.
In claim 2, the information received from the terminal in the step of calculating the second fatigue index,
A method of operating a wearable device comprising information related to a driver's gender, age, height, and weight.
In claim 2, the driving time of the driver in the step of calculating the third fatigue index,
The method of operating a wearable device, which is a time during which a communication connection of Bluetooth communication between the wearable device and the vehicle electronic control device is maintained.
In claim 4, the step of calculating the third fatigue index,
A method of operating a wearable device comprising counting time from a start point of a communication connection of the Bluetooth communication.
The method of claim 5, wherein the calculating of the third fatigue index comprises:
stopping the counting of the time immediately after the connection of the Bluetooth communication when the vehicle speed drops below the reference speed; and
If the vehicle speed again rises above the reference speed, restarting the counting of the time immediately after that point in time.
A method of operating a wearable device comprising a.
In claim 2, the step of calculating the first fatigue index,
The method of operating the wearable device, which is calculated from a difference between the current time and the driver's wake-up time.
In claim 1, after the transmitting step,
The navigation unit connected to the vehicle electronic control device through CAN communication,
The method of operating the wearable device further comprising automatically switching a current route screen displayed on a display screen in response to the notification signal to a route screen guiding a rest area closest to the current location of the vehicle.
In claim 1, after the transmitting step,
The AVN unit connected to the vehicle electronic control device through CAN communication,
The method of operating a wearable device further comprising displaying an alert message related to safe driving through a display screen in response to the notification signal.
In claim 1, after the transmitting step,
The method of operating a wearable device, wherein the wearable device further comprises generating vibration using a vibration function of a vibration module provided therein.
In a wearable device having a smart key function,
a communication module connecting the wearable device to a terminal and an electronic control device for a vehicle through Bluetooth communication; and
The wearable device calculates a driver condition index based on the information received from the terminal and the information received from the vehicle electronic control device, generates a notification signal corresponding to the driver condition index, and sends the notification through the communication module. And a processor module for transmitting a signal to the terminal and the vehicle electronic control device,
The processor module,
After the Bluetooth communication is connected, a fatigue index according to the driving time counted based on a comparison result between the vehicle speed and the reference speed is calculated, and the driver condition index is calculated using the fatigue index according to the driving time Wearable device.
The method of claim 11, further comprising an acceleration sensor for measuring the amount of change in the driver's movement,
The processor module,
The sleep index according to the driver's sleeping time calculated based on the amount of change in the driver's movement measured by the acceleration sensor, and the driver's first Fatigue index, a second fatigue index according to the driver's calorie consumption calculated based on the information received from the terminal, and a third fatigue index calculated based on the driver's driving time based on the information received from the vehicle electronic control device The wearable device of calculating the driver's condition index using
The method of claim 12, further comprising a memory for storing the sleep index and the first to third fatigue indexes,
The processor module,
The previous sleep index stored in the memory and the first to third fatigue indices are compared with the currently calculated sleep index and the first to third fatigue indices, and if they are not the same, the previous sleep index and the first to third fatigue indices are compared. and updating the third fatigue index with the currently calculated sleep index and the first to third fatigue indexes and storing them in the memory.

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