KR101281807B1 - Apparatus for smart-key of automobile and method for driving thereof - Google Patents

Abstract

The smart key device for locking or releasing a door of a vehicle may include: a controller configured to determine whether the user is drunk from at least one biological information of the user, and to generate a driving control signal; A light receiver configured to collect light reflected or transmitted by the finger to generate human body information corresponding to at least one of the plurality of biological information, and a driver to control an operation of the smart key device according to the driving control signal It includes.

Driving, accident, prevention, blood oxygen saturation, pulse rate, optics, smart key, car

Description

Smart key device for car and driving method thereof {Apparatus for smart-key of automobile and method for driving}

The present invention relates to a smart key device of a vehicle and a driving method thereof.

The present invention is derived from a study conducted as part of the IT original technology development project of the Ministry of Knowledge Economy [Task Management Number: 2008-F-039-01, Task name: Development of human-robot interaction mediated technology].

In general, a car is designed to be easily operated by anyone with a ignition key without any special safety device. So, when the driver is drunk or uncomfortable because he is uncomfortable, he can drive without any sanction.

Recently, as the prevalence of automobiles has increased dramatically, drunk driving has also increased proportionally. Such drunk driving can cause fatal thoughts not only to the driver but also to others. However, many drivers violate this and continue to drunk driving, which is why they are driving drunk driving in areas not often noticed.

In this case, the general driver may not know whether or not his drinking amount is appropriate or inappropriate for drunk driving. Therefore, in order to prevent such drunk driving in advance, it is possible to check their drinking status by using a separate breathalyzer to measure their drinking amount after drinking.

However, the breathalyzer as described above is generally not widely installed, there is a limitation in measuring the amount of drinking. And even if the driver carries a breathalyzer, there is a problem that can drive a car regardless of the breathalyzer according to his will.

On the other hand, in addition to the case of drunk driving, the driver's pulse or blood oxygen saturation degree is lowered, but despite the difficult state to drive, there is a problem that a driver may drive a car driving accident without recognizing it.

SUMMARY OF THE INVENTION The present invention provides a smart key device for a vehicle and a method of driving the same, which allow or disallow the use of a smart key using biological information of a driver including pulse information or blood oxygen concentration.

According to one embodiment of the invention, there is provided a smart key device for an automobile. In the smart key device of the vehicle, the control unit for determining whether the user is drunk from the at least one biological information of the user to generate a drive control signal, the light emitting unit for irradiating light to the finger of the user in contact, A light receiver configured to collect light reflected or transmitted by the finger to generate human body information corresponding to at least one of the plurality of biological information, and a driver configured to control an operation of the smart key device according to the driving control signal Include.

According to another embodiment of the present invention, a method of driving a smart key device of a vehicle is provided. The method includes driving a smart key device of a vehicle, the method comprising: irradiating light to the user's finger, collecting light reflected or transmitted to the finger to generate at least one human body information, the at least one Generating at least one biological information of the user from human body information of the user, determining whether the user is drinking from a plurality of biological information including the at least one biological information, and determining whether the user is drinking Generating a driving control signal, and controlling an operation of the smart key device according to the driving control signal.

According to an embodiment of the present invention, by measuring the biological information of the user optically and using it to determine whether the user can drive, that is, whether to drink alcohol by allowing or disallowing the use of the smart key of the car in advance to drive the car accident There is a preventable effect.

In addition, by measuring the blood oxygen saturation or pulse rate of the user can be predicted whether drinking alcohol, blood oxygen saturation of the heart disease patients can be measured before riding to prevent driving accidents due to pain and spasms that may occur during driving. have.

In addition, the user can monitor his or her health by displaying biological information such as blood oxygen saturation, pulse rate, heart rate variability-related parameters, and temperature measured using a smart key on the screen.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar drawings are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Now, a smart key device for a vehicle and a driving method thereof according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a schematic block diagram of a smart key device of a vehicle according to an embodiment of the present invention, Figure 2 is a schematic plan view of a smart key device of a vehicle according to an embodiment of the present invention, Figure 3 is a present invention A schematic cross-sectional view of a smart key device of a vehicle according to an embodiment of the present invention.

Referring to FIG. 1, a smart key device 100 of a vehicle according to an embodiment of the present invention includes a key 110 and a main body 120. The main body 120 includes a temperature detector 121, a light emitting unit 122, a light receiving unit 123, a power supply unit 124, a controller 125, a screen display unit 126, and a driver 127.

Here, in the smart key device 100 of the vehicle, as shown in FIGS. 2 and 3, a key 110 is formed at one end of the main body 120. The key 110 is a lock / unlock means for being inserted into a key box (not shown) of the car to open or close the door of the car. At this time, the key 110 is inserted into the inside of the main body 120 (FIG. 3) or is drawn out from the inside of the main body 120 (FIG. 2).

In addition, the control unit 125 and the driving unit 127 are formed inside the main body 120 and connected to the light emitting unit 122 and the light receiving unit 123, and may be formed in an integrated chip or module form.

Next, the operation of each component constituting the main body 120 will be described. The temperature detector 121 detects the temperature of the user's finger and generates temperature information. In this case, the temperature detector 121 includes a temperature sensor (not shown) for detecting the temperature of the user's finger and a processor (not shown) for amplifying the temperature signal detected by the temperature sensor and converting the temperature signal into a digital signal to generate temperature information. can do.

The light emitter 122 irradiates light to a user's finger that is in contact. In this case, the light emitter 122 may include a light emitting diode (LED), and an LED having a red wavelength (660 nm) and / or a near infrared wavelength (890 nm) region may be used. The light emitting unit 122 may include an LED for measuring oxygen saturation information in the blood and an LED for measuring pulse wave information.

The light receiver 123 collects light reflected or transmitted by a finger to generate human body information. Here, the human body information includes blood oxygen saturation information or pulse wave information. The pulse wave information is used as information for detecting a heart rate variability (HRV) related parameter.

The light receiver 123 includes a photodiode, a photodiode for measuring blood oxygen saturation information, and a photodiode for detecting pulse wave information. At this time, the light receiving unit 123 is a blood oxygen saturation processing unit (not shown) for performing the pre-processing to convert the signal received by the photodiodes for measuring the blood oxygen saturation information to a digital signal and to measure the pulse wave information It may include a pulse wave processing unit (not shown) for performing a pre-processing to convert the signal received from the photodiode to a digital signal by amplifying, filtering and the like.

At this time, when a predetermined pressure is applied to the predetermined blood vessel of the finger by pressing the light emitting unit 122 and the light receiving unit 123 with the fingers, the amount of light received by the light receiving unit 123 decreases during the vasodilator due to the pulse, while the blood vessel systolic machine is reduced. While stretches. Pulse wave information can be detected by using the pulse wave information. Since the amount of light undergoes periodic modulation by the pulse when light passes through the blood vessel, the pulse wave is measured by measuring the period of the amplitude change in the signal output by the light receiving unit 123. Information can be detected.

In addition, since absorption characteristics in the red wavelength region (660 nm) and the near infrared wavelength (890 nm) region of the light emitting unit 122 are changed with each other, oxygen saturation in the blood is measured using the two wavelengths. At this time, it can be calculated by 'oxygen saturation (%) = ([O 2 Hb] / ([O 2 Hb] + [Hb])) x 100'.

On the other hand, the smart key device according to an embodiment of the present invention calculates the pulse information and blood oxygen saturation information of the user by analyzing the amount of light transmitted or reflected through the human body using the light emitting unit 122 and the light receiving unit 123 An optical measurement method is used. Such optical measurement methods include two methods, a transmission type and a reflection type. In the transmission type, the light receiving axis and the light emitting axis face each other in a straight line to receive light transmitted through the blood vessel. In the reflection type, the light receiving axis and the light emitting axis are arranged to cross each other at a predetermined angle in order to receive light reflected or diffused by the blood vessel. 2 and 3 illustrate a smart key device according to a reflection type as an example.

The power supply unit 124 supplies operating power to the controller 125 and the driver 127. For example, a coin-type mercury battery may be used for the power supply unit 124.

The controller 125 determines whether the driver drinks alcohol from the plurality of biological information of the driver corresponding to the human body information input from the light receiver 123, generates a driving control signal based on the determination result, and outputs the driving control signal to the driver 127. That is, the controller 125 controls the driver 127 when the driver determines that the driver is in a drinking state so that the key 110 is inserted into the main body 120, and when the driver determines that the driver is in the non-drinking state, the key 110. ) May protrude out of the main body 120.

Here, the biological information includes one or more of blood oxygen concentration, HRV related parameters, and temperature information.

The controller 125 collects blood oxygen saturation information and pulse wave information from the light receiver 123, and collects temperature information (that is, measurement site temperature) from the temperature detector 121.

The controller 125 calculates the blood oxygen concentration O ₂ from the blood oxygen saturation information. The HRV-related parameters are calculated using pulse wave information. HRV-related parameters are the mean heart rate (hereinafter referred to as 'HR'), the standard deviation of the NN intervals (hereinafter referred to as 'SDNN'), and the squared difference between adjacent heart rates. Root mean square standard deviation (hereinafter referred to as 'RMSSD'), and at least one of the heart rate difference 50ms or more (hereinafter referred to as 'NN50').

As described above, an observation matrix X is generated based on the HRV-related parameters calculated by the controller 125, that is, HR, SDNN, RMSSD, NN50, temperature information Temp, and blood oxygen concentration O ₂ . After calculating the observation matrix (X) and the drinking determination coefficient matrix (β), it is determined whether to drink based on the calculation result.

The screen display unit 126 displays the degree of drinking as one or more of letters, numbers, and graphics. In addition, the screen display unit 126 may display HR, SDNN, RMSSD, NN50, and blood oxygen concentration (O ₂ ) by one or more of letters, numbers, and graphics.

The driving unit 127 inserts the key 110 into or out of the main body 120 according to the driving control signal output from the control unit 125. For example, the driving unit 127 may include a solenoid. In this case, the key 110 may be inserted into the main body 120 or drawn out by the energy generated by the current flowing through the solenoid by the power supply unit 124. Alternatively, the driving unit 127 may include a motor. In this case, the key 110 connected to the motor can be advanced or retracted by the rotation of the motor.

Alternatively, the drive unit 127 may include other means for moving the key back and forth.

Meanwhile, the process of calculating the HRV related parameter and the process of determining whether to drink based on a plurality of biological information will be described in more detail with reference to the following equations.

First, the process of calculating the HRV related parameters by the controller 125 is as follows.

The controller 125 'R waves' the pulse wave information received from the light receiver 123, that is, the peak of the pulse wave signal. The controller 125 measures N RR intervals (RRIs) during the measurement time, and this RR interval (RRI) may be expressed by Equation 1 below. Here, the RR interval (RRI) is an interval between two adjacent R waves, and represents an interval between two adjacent peaks in the pulse wave signal.

RRI = {I (1), I (2), I (3), ..., I (N)}

Where I (i) is the i-th measured RR interval (i is an integer from 0 to N).

The controller 125 measures N heart rates (hereinafter, referred to as 'HRT') during the measurement time from the RR interval, and this HRT may be expressed as in Equation 2 below.

HRT = {hr (1), hr (2), hr (3), ..., hr (N)}

Here, hr (i) is an i-th heart rate, which can be expressed by Equation 3 below.

hr (i) = (total samples per minute) / I (i)

If the sampling frequency of the controller 125 is 500 Hz, the total number of samples for one minute is 500 × 60, and thus 30000.

The average heart rate (HR) per minute during the measurement time is expressed as in Equation 4.

The unit of HR is bpm.

The SDNN of the total RR interval (RRI) is obtained as shown in Equation 5.

In Equation 5 above, meanRRI represents an average RR interval (RRI).

The RMSSD of the square of the difference between adjacent RRIs is calculated as in Equation 6.

NN50 calculates the ratio (pNN50) of the interval between the neighboring heartbeat interval and the total heartbeat interval more than 50 msec.

Next, the process of the control unit 125 determines whether to drink based on biological information is as follows.

The controller 125 measures the biological information n times and then observes the measured biological information such as temperature information (Temp), HR, SDNN, RMSSD, NN50, and blood oxygen concentration (O ₂ ). Form the matrix X.

The column of the observation matrix (X) represents the dimension of the measured biological information. Biological information of the observation matrix illustrated in Equation 7 is composed of temperature information (Temp), HR, SDNN, RMSSD, NN50, and blood oxygen concentration (O2), and the column consists of six biological information.

The row of the observation matrix X is configured dependent on the measurement time. That is, the hot water depends on the measurement time. Measurement time can be made into 1 minute-5 minutes. That is, it may be made to measure for a predetermined time at a predetermined time interval. For example, the measurement time can be measured every 2 minutes, but the measurement time can be set to 1 minute. The measurement period (interval) and measurement time may be set by the user at the beginning of use, and in some cases, may be set and shipped from the factory.

In addition, when the observation matrix is a 6 × n matrix as in Equation 6, the drinking judgment coefficient matrix β is an n × 2 matrix, and the number n of rows depends on the number of measurements. The drinking judgment coefficient matrix β has two columns, which are expressed as [drinking non-drinking].

The alcohol determination coefficient matrix β may be expressed as [drinking non-drinking], for example, as shown in Equation (8).

는 음주를 나타내는 계수이고

는 비음주를 나타내는 계수이다. here,

Is a coefficient representing drinking

Is a coefficient representing non-drinking.

At this time, the drinking determination coefficient matrix β obtains the observation matrix X by configuring the normal state and the drinking state of the user as expected values. At this time, in the embodiment of the present invention, 1.2% or less of the driver's blood alcohol concentration is constituted by the alcohol determination coefficient matrix β.

The controller 125 obtains the product Xβ of the observation matrix X and the drinking determination coefficient matrix β. The product of the observation matrix (X) and the drinking determination coefficient matrix (β) is a 6 × 2 matrix, for example, can be expressed as [drinking non-drinking] as shown in Equation (9).

However, in Equation 9, a1, a2, a3, a4, a5, and a6 represent drinking, and b1, b2, b3, b4, b5, and b6 represent non-drinking.

Next, the maximum value of each row is obtained from the result of the product (Xβ) of the observation matrix (X) and the drinking determination coefficient matrix (β). The result of the case where the maximum value of each row is obtained in Equation 9 may be expressed as Equation 10, for example.

However, in Equation 10, a1> b1, a2> b2, a3> b3, a4> b4, a5 <b5, and a6 <b6. The reason for obtaining the maximum value in each row in the 6-by-2 matrix of Equation 10 is to select a preponderant value of [ai bi], appear as drinking when the selected value is ai, and select non-drinking when bi. The vector shown in the form of non-drinking alcohol is finally determined to be alcohol (scalar value) according to the proportion of drinking / non-drinking alcohol.

In other words, if the maximum number of alcohols is determined from the result of obtaining the maximum value of each row after the product Xβ of the observation matrix X and the alcohol determination coefficient matrix β, the alcohol is determined to be alcohol.

For example, in the result of Equation 10, a1 is drinking by temperature (Temp), a2 is drinking by HR, a3 is drinking by SDNN, a4 is drinking by RMSSD, b5 When NN50 is a non-drinking, b6 is a blood oxygen concentration (O ₂ ) b6 is a non-drinking, as shown in equation (11), drinking 4, non-drinking 2 is finally determined as drinking.

If the number of parameters determined to be alcohol among all parameters is equal to or greater than a threshold (predetermined number), it is determined as alcohol, which may be set according to a user, and in some cases, may be set at the factory and shipped. For example, if the parameter ratio determined to be drinking out of all the parameters exceeds 50% can be determined to be drinking.

Next, the alcohol determination coefficient matrix β will be described.

The controller 125 measures biological information such as temperature information (Temp), HR, SDNN, RMSSD, NN50, and blood oxygen concentration (O ₂ ) for a predetermined time at an initial stage of use, and observes an observation matrix (Equation 7). Find X). Next, the controller 125 may obtain a drinking determination coefficient matrix β as shown in Equation 12 or Equation 13 by using a least mean square.

In Equation 12, X 'is a transpose conjugate matrix of the observation matrix X, and T is a matrix having a value that distinguishes between a drinking state and a normal state for each biological information. If the observation matrix X is a 6xn matrix, i.e., there are six biological information, the T matrix is a 6x2 matrix equal to (Xβ).

On the other hand, in order to use the least mean square method, an inverse matrix of the (X'X) matrix must exist. When the (X'X) matrix is not full rank, the inverse matrix may not exist. In this case, a pseudo inverse matrix [(X'X) ^-P ] of the (X'X) matrix can be used as shown in Equation 12, or a bias ε can be inserted into the (X'X) matrix as shown in Equation 13. have.

Where X is an observation matrix and T is a label that distinguishes between drinking and normal states. A method of obtaining an inverse matrix by inserting a bias is shown in Equation 13, which is already known and a detailed description thereof will be omitted.

I is an n by n unitary matrix. X is an observation matrix, T is a label that distinguishes between drinking and normal states, and '-' is a bias.

Meanwhile, FIG. 4 is a perspective view of a smart key device of a vehicle according to another embodiment of the present invention, and FIG. 5 is a schematic block diagram of a smart key device of a vehicle according to another embodiment of the present invention.

As shown in Figure 4, the smart key device 200 of the vehicle according to another embodiment of the present invention is composed of a card-shaped body 201, and outputs a wireless door signal to lock or lock the door lock 303 of the vehicle The device is released. In this case, the light emitting unit 203, the light receiving unit 205, and the key input unit 207 are mounted outside the main body 201.

In this case, the smart key device 200 of the vehicle, as shown in FIG. 5, the light emitting unit 203, the light receiving unit 205, the key input unit 207, the temperature detector 209, the power supply unit 211, and the control unit 213. , A wireless transmitter 215 and a screen display 217.

Herein, operations of the light emitter 203, the light receiver 205, the temperature detector 209, the power supply 211, the controller 213, and the screen display 217 are described with reference to FIGS. 1 to 3. Since the descriptions are the same as those described in the first embodiment, overlapping descriptions will be omitted and only portions corresponding to other embodiments of the present invention will be described.

The key input unit 207 receives a driver's door opening / closing command and transmits the command to the controller 213.

The wireless transmitter 215 may transmit a wireless door open / close signal that opens or closes the door of the car or a signal to close the door of the car according to the driving control signal output from the control unit 213 to lock or release the door lock 303 of the car. Send.

At this time, the control unit 213 outputs the driving control signal according to the result of determining whether the drinking described in the first embodiment of the present invention to the wireless transmitter 215 and the screen display unit 217.

In addition, the control unit 213 wirelessly transmits a signal for locking the door lock 303 of the vehicle or preventing the engine from starting when the value (pulse rate) of blood oxygen saturation information or pulse wave information is out of a preset reference value range. Can be sent via

On the other hand, the door lock device 300 of the vehicle includes a wireless receiver 301 and the door lock 303. The wireless receiver 301 receives a wireless door open / close signal transmitted by the wireless transmitter 215. The door lock 303 opens or closes the door of the vehicle according to the wireless door open / close signal received by the wireless receiver 301.

As described above, it is possible to determine whether or not the driver is drinking according to the change in blood oxygen concentration. Excessive drinking depletes blood oxygen and increases blood intermolecular concentrations, lowering the oxygen supply to all cells in the body, including the brain, resulting in a hangover. In replenishing the body's oxygen, physiologically available oxygen restores oxygen reduced by drinking.

Studies of OMURA YASUSHI (Univ. Of Tokushima, Fac. Of Integr. Arts and Sci.) And IZUMI I (Toyama Medical And Pharmaceutical Univ., Toyama, Jpn) have shown that blood oxygen saturation is lowered depending on temperature and alcohol consumption. The results are shown, as shown in FIG.

6 is a graph showing a change in blood oxygen saturation with time after drinking according to an embodiment of the present invention.

According to FIG. 6, the result of measuring blood oxygen saturation according to the amount of drinking alcohol shows the results of experiments in which blood oxygen saturation is lowered according to the amount of drinking of most test subjects. In this experiment, blood oxygen saturation was measured for 120 minutes.

At this time, if you start drinking 15 minutes after the experiment (28-year-old male, soju: alcohol 21%, 360mL) from the start of the experiment 40 minutes, the blood oxygen saturation appears to decrease.

Therefore, when blood oxygen saturation falls below a predetermined reference value, it is determined that the alcohol is drunk, and as described above, the smart key device can be controlled to prevent driving of the vehicle.

Next, a method of controlling the operation of the smart key device of the vehicle will be described with reference to FIG. 7. 7 applies to both the first embodiment of the present invention described with reference to FIGS. 1 to 3 and the other embodiments of the present invention described with reference to FIGS. 4 and 5.

7 is a flowchart illustrating a process of determining whether drinking is performed by the controllers 125 and 213 of FIGS. 1 to 5.

According to FIG. 7, the controllers 125 and 213 perform initialization, including initialization of the counter (S101).

The controllers 125 and 213 receive a blood oxygen saturation signal and a pulse wave signal through the light receivers 123 and 205 and receive a temperature signal through the temperature detectors 121 and 209 (S103).

The controllers 125 and 213 extract HRV related parameters from the pulse wave signal (S105). That is, extract HR, SDNN, RMSSD and NN50.

In addition, the controllers 125 and 213 extract blood oxygen concentration O ₂ from the blood oxygen saturation signal (S107).

In addition, the controllers 125 and 213 convert the temperature signal into the actual temperature (S109). In other words, by converting the temperature signal by a conversion factor, the conversion factor is stored at the time of factory shipment. The conversion factor may generally be determined by a method of determining a conversion value. In this case, the conversion factor may be set to '1' and the process of converting the temperature signal to the actual temperature may be omitted.

Here, although S105, 107, and S109 are shown to be performed at the same time for convenience of description, these steps may be calculated in various orders.

Thereafter, the controllers 125 and 213 sequentially store HRV related parameters including HR, SDNN, RMSSD, and NN50, blood oxygen concentration O ₂ , and temperature information Temp in a memory unit (not shown). (X) is generated (S111).

The controllers 125 and 213 calculate a product Xβ of the drinking determination coefficient matrix β previously stored in the observation matrix X and the memory (not shown) generated in step S111 (S113). Here, the drinking determination coefficient matrix β is composed of [drinking non-drinking].

The controllers 125 and 213 detect the maximum value of each row from the product Xβ calculation result and determine whether the maximum value of each row is drinking or non-drinking (S115). Here, the determination of alcohol drinking is calculated using a transfer function and a threshold.

That is, if the number of rows determined to be drinking is compared with the threshold (S117), if the number of rows determined to be drinking is less than or equal to the threshold, it is determined as non-drinking (S119), and if it is larger than the threshold, it is determined to be drinking (S121).

Thereafter, it is determined whether the temperature calculated in step S109 is included in the predefined normal range (S123). For example, the normal range of temperature can be ± 1 degree based on the normal body temperature of a person.

At this time, if the temperature calculated in step S109 is not included in the normal range, the process returns to step S103. This is to check for errors.

In addition, when the temperature calculated in step S109 is included in the normal range, the operation of the smart key device (100, 200) is controlled according to whether or not drinking (S125). That is, when it is determined that drinking, the key 110 of the smart key device 100 is inserted into the main body 120, or the wireless transmission unit 215 of the smart key device 200 signals that the door of the car is closed. Send by car. In addition, when it is determined as non-drinking, the signal 110 of the smart key device 100 protrudes to the outside of the main body 120 or the signal of the wireless transmitter 215 of the smart key device 200 to open the door of the vehicle. To the car.

Meanwhile, according to another exemplary embodiment, the controllers 125 and 213 collect blood oxygen saturation information and pulse wave information from the light receivers 123 and 205, and collect temperature information (ie, measurement site temperature) from the temperature detectors 121 and 209. Collect. In this case, when blood oxygen saturation information is less than or equal to a predetermined reference value, the controller 125 controls the driver 127 so that the key 110 is inserted into the main body 120 or the controller 213 is the wireless transmitter 215. Through the door lock lock signal can be transmitted. When the blood oxygen saturation information exceeds a preset reference value, the controller 125 causes the key 110 to protrude to the outside of the main body 120 or the controller 213 to release the door lock unlock signal through the wireless transmitter 215. Can be sent.

In addition, the controllers 125 and 213 may compare the pulse wave information with a reference value and output a driving control signal or a door lock lock / unlock signal according thereto. At this time, when the value (pulse rate or average heart rate) of the pulse wave information is out of the predetermined reference range value, the controller 125 controls the drive unit 127 so that the key 110 is inserted into the main body 120 or The controller 213 may transmit the door lock lock signal through the wireless transmitter 215. When the value of the pulse wave information is within a preset reference range value, the controller 125 causes the key 110 to protrude to the outside of the main body 120, or the controller 213 transmits the door lock unlock signal through the wireless transmitter 215. Can be sent.

Embodiments of the present invention are not implemented only through the above-described apparatus and / or method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention, a recording medium on which the program is recorded, and the like. It may be.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

1 is a block diagram showing an internal configuration of a smart key device of a vehicle according to an embodiment of the present invention.

2 is a front view of a smart key device of a vehicle according to an embodiment of the present invention.

3 is a side view of a smart key device of a vehicle according to an embodiment of the present invention.

4 is a perspective view of a smart key device of a vehicle according to another embodiment of the present invention.

5 is a block diagram showing an internal configuration of a smart key device of a vehicle according to another embodiment of the present invention.

6 is a graph showing a change in blood oxygen saturation with time after drinking according to an embodiment of the present invention.

7 is a flowchart illustrating a method of controlling the operation of a smart key device of a vehicle according to an embodiment of the present invention.

Claims (22)

In the smart key device of a car, A controller configured to determine whether the user drinks alcohol from at least one biological information of the user, and to generate a driving control signal; Light emitting unit for irradiating light to the user's finger in contact, A light receiver configured to collect light reflected or transmitted by the finger to generate human body information corresponding to the at least one biological information; A driving unit controlling an operation of the smart key device according to the driving control signal, and It includes a temperature detector for detecting the temperature of the user's finger to generate temperature information, The human body information includes blood oxygen saturation information and pulse wave information of the user, The at least one biological information includes blood oxygen concentration and heart rate variation parameters of the user, The control unit obtains the blood oxygen concentration from the blood oxygen saturation information, obtains the heart rate variation parameter from the pulse wave information, The control unit, It is determined whether or not to drink alcohol for each biological information, and when the number of biological information determined to be alcohol among the biological information is more than a threshold value, the user is determined to drink alcohol, the heart rate variation parameter, the blood oxygen concentration and the temperature information Generates an observation matrix based on the multiplication operation, and multiplies the previously stored drinking judgment coefficient matrix, detects the maximum value for each row of the multiplied matrix, and uses the transfer function and threshold to determine the maximum value of each row. The smart key device determines whether the drinking is non-drinking, and generates a driving control signal for limiting the operation of the smart key device when the number of rows determined to be drinking is greater than the threshold. The method of claim 1, Contains more keys, The light emitting part, the light receiving part, the control part and the driving part are formed in a main body, The drive unit inserts the key into the main body when the drive control signal indicates drinking, and removes the key from the main body when the drive control signal indicates non-drinking. Smart key device. The method of claim 1, The driving unit transmits a signal for closing the door of the vehicle to the vehicle when the driving control signal indicates drinking, and sends a signal to open the door of the vehicle when the driving control signal indicates non-drinking. Sending smart key device. delete The method of claim 1, The control unit is a smart key device for generating a drive control signal by determining whether the user drinking if the temperature information is included in the normal range. delete delete The method of claim 1, The heart rate variation parameter includes at least one of an average heart rate, an inter-heart rate standard deviation (SDNN), a root mean square (RMSSD) of the square of the difference between adjacent heart rates, and at least 50 ms difference between heart rates (NN50). delete delete The method of claim 1, The controller may measure each biological information a plurality of times, and determine whether to drink alcohol for each biological information by applying a drinking coefficient and a non-drinking coefficient to the biological information measured multiple times. The method according to any one of claims 1, 2, 3, 5, 8 or 11, The smart key device further comprises a screen display for displaying whether the drinking or the plurality of biological information. In a method for driving a smart key device of a car, Irradiating light on a user's finger, Generating at least one human body information by collecting light reflected or transmitted through the finger; Generating at least one biological information of the user from the at least one human body information, Detecting temperature of the user's finger to generate temperature information; Determining whether the user is drinking from the at least one biological information; Generating a driving control signal according to the determination of whether the user is drinking; and Controlling an operation of the smart key device according to the driving control signal; The at least one human body information includes blood oxygen saturation information and pulse wave information of the user, The at least one biological information includes the temperature information, blood oxygen concentration of the user generated from the blood oxygen saturation information and heart rate variation parameter of the user generated from the pulse wave information, Wherein the determining step comprises: Determining whether to drink alcohol for each biological information, and Determining the user as drinking when the number of biological information determined as drinking among the biological information is equal to or greater than a threshold value; The step of determining whether the drinking, Generating an observation matrix based on the heart rate variability parameter, the blood oxygen concentration and the temperature information and multiplying the previously stored alcohol determination coefficient matrix; Detecting a maximum value for each row of the multiply matrix; and Determining whether the maximum value of each row is drunk or non-drinking using a transfer function and a threshold; Determining the drinking, The driving method is determined to be drinking if the number of rows determined to be drinking is greater than the threshold. 14. The method of claim 13, Wherein the controlling comprises: Inserting a key into the body of the smart key device when the drive control signal indicates drinking; and Taking out the key from the main body when the drive control signal indicates non-drinking; Driving method comprising a. 14. The method of claim 13, Wherein the controlling comprises: Transmitting a signal for closing the door of the vehicle to the vehicle when the drive control signal indicates drinking; and Transmitting a signal for opening the door of the vehicle to the vehicle when the drive control signal indicates non-drinking Driving method comprising a. delete 14. The method of claim 13, Wherein the determining step comprises: Determining whether the temperature information is included in a normal range, and Determining whether the user is drinking if the temperature information is included in the normal range Driving method comprising a. delete delete delete delete 14. The method of claim 13, Determining whether or not drinking for each biological information, Measuring each of said biological information a plurality of times, and Determining whether to drink alcohol for each biological information by applying a drinking coefficient and a non-drinking coefficient to the biological information measured multiple times; Driving method comprising a.

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