KR102267948B1 - Driver's Health Status Diagnostic System using Noncontact Bio-signal - Google Patents

Abstract

The present invention relates to a driver's health condition diagnosis system using non-contact bio-signal detection, and more particularly, by utilizing UWB (ULTRA WIDE BAND) radio frequency radio waves to recognize heart rate and respiration rate, which are bio-signals, in a non-contact method, and through this, real-time It calculates the driver's heart rate and respiration rate and compares it with the pre-stored reference heart rate and respiration rate to determine the driver's health condition and warns the driver, thereby preventing vehicle accidents due to the driver's health condition in advance. The present invention relates to a system for diagnosing a driver's health condition using biosignal detection.

Description

Driver's Health Status Diagnostic System using Noncontact Bio-signal

The present invention relates to a driver's health condition diagnosis system using non-contact bio-signal detection, and more particularly, non-contact heart rate and respiration rate through bio-signals from which external environmental noise has been removed using UWB (ULTRA WIDE BAND) radio frequency radio waves. method, it calculates the driver's heart rate and respiration rate in real time, compares it with the pre-stored reference heart rate and respiration rate, determines the driver's health condition and informs the outside of the driver's health condition. It relates to a driver's health condition diagnosis system using non-contact bio-signal detection that can prevent vehicle accidents in advance.

Modern people are spending more time in vehicles as the number of vehicles increases and utilization increases. In addition, long-term driving in a vehicle causes health care problems and accidents. In order to solve these problems, some automobiles collect driver's driving habits, emotional state information, health state information, breathalyzer, etc., and provide health management and customized services through data analysis.

In particular, driving fatigue caused by driving for a long time threatens the health of the driver and acts as a major cause of traffic accidents, so it is dangerous for all drivers, passengers and pedestrians. According to a study analyzing the driver's heart rate variability (HRV), fatigue is visible after one hour of driving, so it is recommended that drivers need a certain rest based on this time. . Therefore, it is necessary to diagnose the driver's health state in real time while driving the vehicle, take follow-up measures according to the health state, promote driver safety, and prevent vehicle accidents due to the driver's health state.

For this purpose, referring to Korean Patent Publication No. 10-0774118, the vehicle uses a GSR sensor, a body temperature sensor, a heart rate sensor, and a pressure sensor to detect the driver's bio-signals, standardize the detected driver's bio-signals, and As a basis, it is possible to study prevention of drowsy driving, warning, analysis of automobile accidents, and control of the indoor environment of automobiles.

However, in this prior art, a GSR sensor, a body temperature sensor, a heart rate sensor, and a pressure sensor are provided in a handle cover surrounding the steering wheel, and the driver's bio-signals can be detected only when the driver grips the handle cover, so that the driver can control the steering wheel. There is a problem in that the driver's condition cannot be grasped before the cover is gripped. In addition, even when the driver wears gloves, there is a problem in that the driver's bio-signals cannot be detected.

Republic of Korea Patent Publication No. 10-0774118

The present invention has been devised in view of the above problems, and an object of the present invention is to detect the driver's physical condition in a non-contact manner using UWB (ULTRA WIDE BAND) radio frequency radio waves, and the detected driver's bio-signals are Driver health condition diagnosis system using non-contact bio-signal detection that can prevent vehicle accidents due to the driver's health condition in advance by determining whether the condition is suitable for driving and notifying the driver if the condition is not suitable for driving is to provide

In addition, the present invention continuously stores a plurality of background noises generated in an environment without a driver and differentiates the average noise signal of the stored background noise or the average noise signal for each pattern from the detected bio-signals when the driver's bio-signal is detected. An object of the present invention is to provide a driver health condition diagnosis system using non-contact bio-signal detection capable of determining the driver's bio-signal data.

It is another object of the present invention to determine not only the sleep state from biosignal data such as the driver's heart rate and respiration rate calculated in real time, but also to determine the cardiac function disorder according to the heart rate measured in real time, as well as compare the apnea state together. A driver using non-contact bio-signal detection that is suitable for determining the cause of an accident is also suitable for determining the cause of an accident and providing it to an external medical institution through the communication unit to manage it by wireless communication, so that accidents caused by driver apnea and heartbeat abnormality symptoms can be dealt with in advance. It is to provide a health condition diagnosis system.

A driver's health condition diagnosis system using non-contact bio-signal detection according to the present invention for achieving the above objects, transmits radio frequency waves in the direction of the driver's chest, and movement displacement of the driver's heart and lungs from the driver's chest a biosignal detection unit for detecting a reflected signal according to a biosignal calculator configured to calculate the driver's heart rate and respiration rate in real time based on the reflected signal according to the movement displacement of the driver's heart and lungs detected by the biosignal detector; a bio-signal comparison unit that compares the driver's heart rate and respiration rate in real time calculated by the bio-signal calculation unit with a pre-stored reference heart rate and respiration rate; and a control unit that controls to warn the driver when the driver's heart rate and respiration rate deviates from the reference heart rate and respiration rate in real time from the biosignal comparison unit and it is determined that the body is in an abnormal state. a background noise storage unit for storing the reflected signal detected by the biosignal detection unit as a background noise signal when there is no driver; Receives a reflected signal according to the movement displacement of the driver's heart and lungs obtained from the biosignal detection unit, receives a background noise signal from the background noise storage unit, and generates a background noise removal signal by subtracting the background noise signal from the reflected signal It is characterized in that it includes a background noise extraction unit.

In addition, the background noise storage unit stores the background noise signal that is generated when there is no driver in the vehicle when delivering the background noise signal to the background noise extractor tens to thousands of times according to a set time, and then generates the average noise signal. It is characterized in that the signal is then transmitted, or the average noise signal for each group is transmitted after grouping several to tens of signals determined to have similar patterns among the stored background noise signals.

In addition, a database unit for storing biosignal data for the reference heart rate and reference respiration rate indicating the heart rate and respiration rate in a normal state of the driver; and a warning unit that outputs a warning sound to the driver when it is determined that the body is in an abnormal state under the control of the controller.

In addition, the biosignal detection unit may include: an impulse radar transmitter configured to transmit an impulse radar having a radio frequency bandwidth using UWB (ULTRA WIDE BAND) to the driver; and an impulse radar receiver configured to receive the reflected impulse radar reflected from the impulse radar transmitter.

In addition, the biosignal detection unit may include: an impulse generator for generating an impulse having a radio frequency bandwidth using the ULTRA wide band (UWB); an impulse output signal amplifier amplifying the signal generated from the impulse generator into an output signal and transmitting the amplified signal to the impulse radar transmitter; a filter for removing noise from a signal included in the reflected impulse radar received by the impulse radar receiver; and a reflected impulse radar amplifier for amplifying the reflected impulse radar signal from which noise has been removed from the filter.

In addition, the vehicle further includes a driver detection unit that generates a driver detection signal by detecting whether there is a driver in the vehicle, wherein the control unit activates the background noise storage unit when receiving the driver detection signal from the driver detection unit, the background noise storage unit is activated. The noise extraction unit is deactivated, and when the driver detection signal is not received from the driver detection unit, the background noise storage unit is deactivated, but the background noise extraction unit is activated.

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According to the driver's health condition diagnosis system using non-contact biosignal detection according to the present invention according to the present invention, a radio frequency radio wave is transmitted to the driver's chest using UWB (ULTRA WIDE BAND) technology, and according to the transmitted radio wave The effect of analyzing the signals reflected through the movement of the lungs and the heart to measure the heart rate and respiration rate of the human body to determine the driver's health condition early, thereby preventing vehicle accidents due to the driver's health condition in advance there is

In addition, by removing various external environmental noises collected together from the driver's bio-signals through the background noise storage unit and the background noise extraction unit, it is possible to generate more accurate judgment data when the bio-signal comparison unit determines whether the driver's health is abnormal. There is an effect that the reliability of the system is improved.

In addition, after determining whether or not there is a driver in the driver's seat using the driver detection unit, if there is no driver in the driver's seat, the background noise signal is stored in the background noise storage unit, and if there is a driver in the driver's seat, the background noise extracting unit is the background noise Since it is configured to generate a background noise removal signal using the background noise signal previously stored in the storage unit, it is possible to accurately store and use the background noise signal.

In addition, it is not only the sleep state from bio-signal data such as the driver's heart rate and respiration rate that is calculated in real time. In addition to judging cardiac dysfunction according to the heart rate measured in real time, it also compares and judges the apnea state, and provides it through wireless communication to an external medical institution through the communication unit to manage the driver's apnea state and heart rate abnormality. Accidents according to symptoms can be dealt with in advance, and it has the effect of helping to identify accidents.

In addition, when the driver's current state requires attention, a caution signal is generated to inform the outside that the driver's health is not serious but needs attention, such as the possibility of drowsy driving, and the driver's current state requires attention. In the case of a serious condition exceeding the above, a warning signal is generated and the driver immediately informs the outside that the current condition is serious to prevent a traffic accident due to the driver's health abnormality in advance. It has the effect of guiding you to arrive at the site.

1 is an overall configuration diagram of a system for diagnosing a driver's health condition using non-contact bio-signal detection according to an embodiment of the present invention.
2 is a block diagram of a biosignal detection unit provided in a driver health condition diagnosis system using non-contact biosignal detection according to an embodiment of the present invention.
3 is a block diagram of a biosignal calculator provided in a driver health condition diagnosis system using non-contact biosignal detection according to an embodiment of the present invention.
4 is a configuration diagram of a warning unit provided in a system for diagnosing a driver's health condition using non-contact bio-signal detection according to an embodiment of the present invention.

The present invention may be embodied in various other forms without departing from its technical spirit or main characteristics. Accordingly, the embodiments of the present invention are merely illustrative in all respects and should not be construed as limiting.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms.

The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be

On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprise" or "comprising", "have" and the like are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one It should be understood that it does not preclude the possibility of the presence or addition of or more other features or numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, the most preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings in order to describe in detail enough that a person of ordinary skill in the art can easily practice the present invention. .

1 is an overall configuration diagram of a system for diagnosing a driver's health condition using non-contact bio-signal detection according to an embodiment of the present invention.

Referring to FIG. 1 , a driver health condition diagnosis system using non-contact bio-signal detection according to an embodiment of the present invention is mounted on, for example, a vehicle's rearview mirror, and is applied in a non-contact manner, rather than in a conventional manner, to keep an eye on the driver. configured to be able to That is, by continuously detecting the respiration rate and heart rate among the driver's biosignals that are directly related to the safe driving of the vehicle, the difference between the driver's breathing pattern and heart rate pattern when awake and drowsy is detected and based on the detected data This can prevent emergencies. The configuration of the driver's health condition diagnosis system using the non-contact bio-signal detection includes the bio-signal detection unit 100, the bio-signal calculation unit 200, the driver detection unit 250, the bio-signal comparison unit 300, the control unit 700, It includes a database unit 400 and a warning unit 500 .

The biosignal detection unit 100 transmits radio frequency waves to the driver's chest while driving, and detects a reflected signal according to movement displacement of the driver's heart and lungs from the driver's chest.

The biosignal calculator 200 calculates the driver's heart rate and respiration rate in real time based on the reflected signal according to the movement displacement of the driver's heart and lungs detected by the biosignal detector 100 .

The driver detection unit 250 generates a driver detection signal by detecting whether there is a driver in the vehicle, and may include, for example, a weight sensor provided on a driver's seat seat of the vehicle to detect the weight of the driver. The driver detection signal detected by the driver detection unit 250 is transmitted to the control unit. When receiving the driver detection signal from the driver detection unit 250 , the controller activates a background noise storage unit 210 (shown in FIG. 3 ), which will be described later.

The bio-signal comparison unit 300 compares the driver's heart rate and respiration rate calculated by the bio-signal calculation unit 200 with a pre-stored reference heart rate and respiration rate.

The control unit 700 is configured to warn the driver when it is determined that the driver's heart rate and respiration rate deviates from the reference heart rate and respiration rate in real time from the biosignal comparison unit 300 and it is determined that the body is in an abnormal state.

The database unit 400 is configured to store biosignal data such as a reference heart rate and respiration rate indicating the heart rate and respiration rate in a normal state of the driver. In addition, the control unit 700 is configured to compare the driver's heart rate and respiration rate with the reference heart rate and respiration rate stored in the database unit 400 in real time in the bio-signal comparison unit 300 .

The warning unit 500 receives, for example, a warning signal from the control unit 700 and outputs a warning sound to the driver. That is, when the controller 700 determines in real time that the driver's heart rate and respiration rate deviates from the reference heart rate and respiration rate and is in an abnormal state, the controller 700 transmits a warning signal to the warning unit 500 and the warning unit 500 immediately warns the driver so that the driver can be informed that an abnormality has occurred in the driver's health. The warning unit 500 may be a speaker 510 (shown in FIG. 4 ) that outputs a warning sound in the device, and of course, the vehicle speaker may be utilized through an electronic controller installed in the vehicle.

2 is a block diagram of a biosignal detection unit provided in a driver health condition diagnosis system using non-contact biosignal detection according to an embodiment of the present invention.

Referring to FIG. 2 , the biosignal detection unit 100 transmits a radio frequency (radio frequency) radio wave to the driver's chest while driving, for example, a UWB (ULTRA WIDE BAND) radio frequency of 3.1 to 4.8 GHz to the driver. , detects a reflected signal according to movement displacement of the driver's heart and lungs from the driver's chest. To explain this in more detail, the biosignal detection unit 100 uses an ULTRA wide band (UWB) to transmit an impulse radar having a predetermined frequency bandwidth (eg, 3.1 to 4.8 GHz) using an impulse radar transmitter (Tx). 110) and an impulse radar receiver (Rx) 120 that receives the reflected impulse radar transmitted (reflected) from the impulse radar transmitter 110 . That is, when the heart or lungs contract and the heart or lungs expand, the distance between the impulse radar transmitter Tx 110 or the impulse radar receiver Rx 120 and the heart or lungs varies. Therefore, the time until the impulse radar transmitted from the impulse radar transmitter 110 is reflected by the human body and received by the impulse radar receiver 120 is measured, and using the measured value, the biosignal calculator 200 is used. Calculate heart rate and/or respiration rate.

On the other hand, the biosignal detection unit 100 includes an impulse generator 130 for generating an impulse having a predetermined frequency bandwidth (for example, 3.1 to 4.8 GHz) using UWB (ULTRA WIDE BAND), and the impulse generator ( 130) and further includes an impulse output signal amplifier 160 for amplifying the signal as an output signal and transmitting the amplified signal to the impulse radar transmitter 110.

In addition, the biosignal detector 100 includes a filter 140 for removing noise from a signal included in the reflected impulse radar received from the impulse radar receiver 120 , and a reflection from which noise is removed from the filter 140 . It further comprises a reflected impulse radar amplifier 150 for amplifying the impulse radar signal.

3 is a block diagram of a biosignal calculator provided in a driver health condition diagnosis system using non-contact biosignal detection according to an embodiment of the present invention.

1 to 3 , the biosignal calculator 200 calculates the driver's heart rate and respiration rate in real time based on the reflected signal according to the movement displacement of the driver's heart and lungs detected by the biosignal detector 100 . perform the role To explain this in more detail, the bio-signal calculator 200 is obtained by the bio-signal detector 100 and the noise is removed from the filter 140, and then through the reflected impulse radar amplifier 150 . An analog-to-digital converter 210 for converting the amplified reflected impulse radar signal into a digital signal, and a digital signal converted through the analog-to-digital converter 210, for example, a DSP having a digital filter and a correlation function (Digital signal processor), extracts the respiratory signal and heart rate signal, based on this, the heart rate and respiration rate extractor 220 that calculates the driver's heart rate and respiration rate again in real time, generated when there is no driver in the vehicle The reflected signal according to the movement displacement of the driver's heart and lungs obtained from the background noise storage unit 230 for storing the background noise signal and the biosignal detection unit 100 is received, and the background noise storage unit 230 receives the background noise. and a background noise extracting unit 240 that receives the signal and generates a background noise removal signal by subtracting the background noise signal from the reflected signal.

Here, the background noise storage unit 230 stores various noises that may be generated when the driver is not present tens to thousands of times according to a set time, generates an average noise signal thereof, and transmits it to the background noise extraction unit 220. The background noise extraction unit 220 may generate a background noise removal signal by differentiating the average noise signal received from the background noise storage unit 230 from the reflected signal received from the biosignal detection unit 100 .

It stores various external environmental noises repeatedly or similarly generated in the absence of a driver, and when there is a driver, the biosignal detection unit 100 collects the biosignals together with the biosignals obtained from the driver. This is to extract and remove external environmental noise.

Accordingly, the external environmental noise signal may be continuously stored tens or thousands of times as described above in the background noise storage unit 230 to generate an average noise signal thereof and transmit it to the background noise extraction unit 220, and another In an embodiment, several to tens of stored background noise signals may be grouped for each signal pattern, an average noise signal may be generated for each group, and these may be transmitted to the background noise extractor 220 .

At this time, the background noise extracting unit 220 extracts the average noise signal determined to have the most similar signal pattern from the biosignals received from the biosignal detection unit 100 among the average noise signals for each group, and differentiates them from the biosignals. Thus, a background noise removal signal is generated.

As described above, through the storage of various types of background noise in the absence of the driver, external environmental noise collected together with the bio-signals obtained from the driver in the presence of the driver can be removed through signal difference, resulting in more accurate extraction of the driver’s current bio-signals. it becomes possible

On the other hand, since the present invention further includes a driver detection unit 250 that generates a driver detection signal by detecting whether there is a driver in the vehicle, the control unit 700 receives the driver detection signal from the driver detection unit 250 . In this case, the background noise storage unit 230 is activated. In detail, since the reflected signals detected by the biosignal detection unit 100, ie, the driver's heart rate and respiration rate, are used to calculate the background noise in the absence of the driver, the control unit 700 controls the driver detection unit 250 ), the background noise storage unit 230 is activated to store the driver's heart rate and respiration rate detected by the biosignal detection unit 100 in the background noise storage unit 230 . At this time, the control unit 700 deactivates the background noise extraction unit 240 to block the unnecessary operation of the background noise extraction unit 240 .

On the other hand, in the presence of the driver, the reflected signal detected by the biosignal detection unit 100, that is, the driver's heart rate and respiration rate, is the real driver's heart rate and respiration rate calculated in real time. When the driver detection signal is not received from 250), the background noise extractor 240 is activated to generate a background noise removal signal that is differentiated from the background noise signal from the reflected signal. At this time, the control unit 700 deactivates the background noise storage unit 230 to prevent unnecessary operation of the background noise storage unit 230 .

As such, in the present invention, after determining whether or not there is a driver in the driver's seat using the driver detection unit 250 , if there is no driver in the driver's seat, the background noise signal is stored in the background noise storage unit 230 , and the driver in the driver's seat If there is, since the background noise extraction unit 240 is configured to generate a background noise removal signal using the background noise signal previously stored in the background noise storage unit 230 , there is an effect that the background noise signal can be accurately stored and used. .

The bio-signal comparison unit 300 compares the driver's heart rate and respiration rate in real time calculated by the bio-signal calculation unit 200 with a pre-stored reference heart rate and respiration rate. That is, the bio-signal comparator 300 receives the background noise removal signal from the bio-signal data calculation unit 200 and stores the heart rate and respiration rate of the driver in real time and the database unit 400 calculated through it. It serves to compare the stored reference heart rate and respiration rate to determine whether there is an abnormality under the control of the controller 700 .

On the other hand, the bio-signal comparison unit 300 includes the emergency situation analysis unit 310 to detect that the driver's respiration rate becomes unstable compared to the reference respiration rate in real time, or that the driver's heart rate becomes smaller than the reference heart rate in real time in an emergency situation It is possible to analyze with an algorithm that determines the start of , so that a system for warning the driver can be built by checking the time when the controller 700 determines the start of an emergency situation. Of course, the bio-signal comparison unit 300 is not only in the sleep state. It goes without saying that not only can the heart function failure be determined according to the heart rate measured in real time, but also the apnea state can be compared and determined. Here, when the driver's respiration rate becomes unstable compared to the reference respiration rate, it means that the driver's respiration rate is deviating from the reference respiration rate and the body is in an abnormal state.

In addition, the emergency situation analysis unit 310 determines that it is a non-emergency situation when the driver's respiration rate in real time becomes unstable within the non-emergency range compared to the reference respiration rate or when the driver's heart rate decreases within the non-emergency range than the reference heart rate in real time. do. When the emergency situation analysis unit 310 determines that it is a non-emergency situation, the control unit 700 outputs a caution signal to the warning unit. This is a situation that requires attention, such as drowsy driving, a symptom of health abnormality, etc., although the driver's health condition is not critically serious. Accordingly, a caution signal is output.

In addition, the emergency situation analysis unit 310 determines that it is an emergency situation when the driver's respiration rate becomes unstable within the emergency range compared to the reference respiration rate in real time or when the driver's heart rate decreases within the emergency range than the reference heart rate in real time . The control unit 700 outputs a warning signal to the warning unit when the emergency situation analysis unit 310 determines that it is a non-emergency situation. This is to output a warning signal according to the driver's shoulder state is a serious enough state to be critical.

4 is a configuration diagram of a warning unit provided in a system for diagnosing a driver's health condition using non-contact bio-signal detection according to an embodiment of the present invention.

1 to 4 , the control unit 700 generates a caution signal or a warning signal according to the non-emergency situation or the emergency situation determined by the emergency situation analysis unit 310 and transmits it to the warning unit.

The warning unit 500 includes a speaker 510 , and may further include a vehicle environment change unit 520 and an emergency notification unit 530 . The speaker 510 receives a caution signal or a warning signal from the control unit 700 and outputs a sound to the outside, and depending on whether the driver is in a non-emergency or emergency situation, it can be used to give attention or warning through different warning sounds. make it possible

The vehicle environment change unit 520 may automatically display music corresponding to a music genre preset by the driver according to a control signal transmitted from the control unit 700 , that is, an attention signal. In addition, the vehicle environment change unit 520 automatically controls the air conditioner, such as an air conditioner, a heater, etc. according to the caution signal transmitted from the control unit 700 to change the internal environment of the vehicle to prevent drowsy driving in advance. do.

The emergency notification unit 530 transmits the current state of the driver to a pre-registered medical institution using wireless communication according to a control signal, ie, a warning signal, transmitted from the control unit 700, so that a follow-up action is performed promptly. For example, when the driver's current state is an emergency, the medical institution may notify the driver of the current state by phone or the like, or send an ambulance to quickly move the driver to a hospital. In this way, by using the emergency alert unit 530 to notify the outside of the driver's apnea condition and heartbeat abnormality according to the driver's heart rate and respiration rate in real time, the driver's apnea condition and cardiac It also helps to prevent accidents caused by abnormal heartbeat symptoms or to identify the cause of accidents.

It will be understood that the present invention is not limited to the forms recited in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

100: biosignal detection unit
110: impulse radar transmitter 120: impulse radar receiver
130: impulse generator 160: impulse output signal amplifier
140: filter 150: reflected impulse radar amplifier
200: biosignal calculator
210: analog-to-digital converter 220: heart rate and respiration rate extractor
230: background noise storage unit 240: background noise extraction unit
250: driver detection unit
300: bio-signal comparison unit 310: emergency situation analysis unit
400: database unit
500: warning unit
510: speaker 520: vehicle environment change unit
530: emergency notification unit
600: communication department
700: control unit

Claims (7)

a biosignal detector for transmitting radio frequency waves in the direction of the driver's chest and detecting a reflected signal according to movement displacement of the driver's heart and lungs from the driver's chest;
a biosignal calculator configured to calculate the driver's heart rate and respiration rate in real time based on the reflected signal according to the movement displacement of the driver's heart and lungs detected by the biosignal detector;
a bio-signal comparison unit that compares the driver's heart rate and respiration rate in real time calculated by the bio-signal calculation unit with a pre-stored reference heart rate and respiration rate; and
a control unit that controls to warn the driver when it is determined that the driver's heart rate and respiration rate deviates from the reference heart rate and respiration rate in real time from the bio-signal comparison unit
The biosignal calculator,
a background noise storage unit for storing the reflected signal detected by the biosignal detection unit as a background noise signal when there is no driver in the vehicle;
Receives a reflected signal according to the movement displacement of the driver's heart and lungs obtained from the biosignal detection unit, receives a background noise signal from the background noise storage unit, and generates a background noise removal signal by subtracting the background noise signal from the reflected signal Including a background noise extraction unit,
The background noise storage unit
When transmitting the background noise signal to the background noise extractor, the background noise signal generated when there is no driver in the vehicle is stored tens to thousands of times depending on the set time, and then the average noise signal is generated and transmitted, or the stored background After grouping signals determined to have similar patterns among noise signals into several to tens for each group, the average noise signal for each group is transmitted,
Further comprising a driver detection unit for generating a driver detection signal by detecting whether there is a driver in the vehicle,
When receiving the driver detection signal from the driver detection unit, the control unit activates the background noise storage unit, deactivates the background noise extractor,
When the driver detection signal is not received from the driver detection unit, the background noise storage unit is deactivated, the background noise extraction unit is activated,
The background noise extractor extracts an average noise signal determined to have the most similar signal pattern from the biosignal currently received from the biosignal detector among the average noise signals for each group, and differentiates it from the biosignal to generate a background noise removal signal Driver health condition diagnosis system using non-contact bio-signal detection, characterized in that.
delete The method of claim 1,
a database unit configured to store biosignal data for the reference heart rate and reference respiration rate indicating the heart rate and respiration rate in a normal state of the driver; and
and a warning unit that outputs a warning sound to the driver when it is determined that the body is in an abnormal state under the control of the controller.
The method of claim 1,
The biosignal detection unit,
an impulse radar transmitter for transmitting an impulse radar having a radio frequency bandwidth using UWB (ULTRA WIDE BAND) to the driver; and
and an impulse radar receiver receiving the reflected impulse radar reflected from the impulse radar transmitter.
5. The method of claim 4,
The biosignal detection unit,
an impulse generator for generating an impulse having a radio frequency bandwidth using the UWB (ULTRA WIDE BAND);
an impulse output signal amplifier amplifying the signal generated from the impulse generator into an output signal and transmitting the amplified signal to the impulse radar transmitter;
a filter for removing noise from a signal included in the reflected impulse radar received by the impulse radar receiver; and
Driver health condition diagnosis system using non-contact biosignal detection, characterized in that it further comprises a reflected impulse radar amplifier for amplifying the reflected impulse radar signal from which noise has been removed from the filter.
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