KR101357098B1 - Method for detecting and correcting of bio-signal of walking surport device user - Google Patents

Abstract

The present invention relates to a method for acquiring a biosignal correction of a walker aid user, when acquiring a biosignal from various biosensors mounted on a handle of a walker aid, when an error occurs in acquiring an electrocardiogram signal due to a poor contact while a user moves. Since the ECG signal received from the biometric information suit or biometric band worn is first and secondly compensated, the objective is to accurately acquire the necessary parameters from the ECG signal without time delay.
It is an object of the present invention to obtain an electrocardiogram signal acquiring process for simultaneously acquiring synchronized first to third electrocardiogram signals from a first electrocardiogram sensor of a handle sensor portion, a second electrocardiogram sensor of the chute sensor portion, and a third electrocardiogram sensor of the band sensor portion; Each acquired ECG signal is a parameter calculation process of sequentially calculating AD values, R-peaks, RRI, and HR through an analysis process, respectively; A first correction process of correcting and calculating the parameters of the second electrocardiogram signal when the parameters of the first electrocardiogram signal are out of the normal range; And a second correction process of correcting and calculating the parameters of the third electrocardiogram signal when the parameters of the second electrocardiogram signal calculated in the first correction process are outside the normal range.

Description

Method for obtaining bio signal correction of walking aid user {Method for detecting and correcting of bio-signal of walking surport device user}

The present invention relates to a method for acquiring an unconstrained biosignal of a walker aid user, and more particularly, when acquiring a biosignal from a palm of a user in contact with a biosensor embedded in a handle of a walker assist, a contact fail. When noise occurs on the detected ECG signal, the ECG signal is acquired and corrected from the ECG sensor worn by the user or the ECG sensor embedded in the biological information band, thereby acquiring the ECG signal of the user without breaking the ECG signal. The present invention relates to a biosignal correction acquisition method of a walking aid user.

In general, the u-Healthcare system is a combination of IT and healthcare services to provide healthcare and healthcare services that are available anytime, anywhere, and to remotely manage disease, and to maintain and improve the health of the public.

For this purpose, it is necessary not only to acquire more accurate biometric information from the subject, but also to attach or wear the biometric information acquisition device to the subject's body so that the subject can acquire biometric information in a non-restrained state.

That is, the biometric information acquisition device according to the prior art is mainly, electrocardiogram (ECG), pulse wave (PPG), skin electrical resistance (GSR), skin temperature (SKT), body fat (BMI), EMG (EMG), muscle strength signal from the subject It is a device that acquires (MMG), etc. from a sensor.It is a watch type, band type, direct body attachment type, suit type, etc. in order to continuously acquire biometric information without disturbing the subject's daily life. Constrained biometric information acquisition device.

The bio-information obtained from the body of the subject is acquired by the non-restrained bio-information acquiring device, and the acquired bio-signals are stored in a memory or transmitted to the analysis / management system using a radio signal to analyze the bio- To be diagnosed or understood.

However, the apparatus for obtaining unbound biometric information according to the related art is composed of a wristwatch type, a band type, a body directly attached type, a suit type, etc. according to the characteristics of the biometric information to be obtained, and according to the biometric information to be acquired. The shape of the acquisition device is determined, and if there is a problem in that the accurate bio-signal is not obtained or the acquisition time is delayed due to an error such as poor contact in the acquisition device.

Therefore, in order to improve the problems of the prior art, when acquiring a biosignal from various biosensors mounted on the handle of a walking aid, an error may occur in acquiring an electrocardiogram signal due to a lead fail while the user moves. In this case, an object of the present invention is to provide a method for obtaining correction of a biosignal of a walking aid user, which accurately acquires an electrocardiogram signal without time delay, since it is compensated by an ECG signal received from a biological information suit or a biological information band worn.

Another object of the present invention is to calculate the parameters analyzed from the ECG signal received through the chute sensor, if an error occurs due to a poor contact of the ECG sensor mounted on the handle of the walking aid, ECG signal of the compensated chute sensor In case of an error such as poor contact, the second signal is compensated with the ECG signal received from the band sensor unit of the biometric band, so that the ECG signal of the walker aid user can obtain an accurate ECG signal without the ECG signal error or time delay. It is to provide a method of obtaining a correction.

In order to achieve the object of the present invention, the physiological signal correction acquisition process of a walker aid user obtains a physiological signal from a handle sensor unit mounted on a handle of a walker aid and a chute sensor unit of a product information suit, and obtains from the handle sensor unit. In the biometric signal acquisition method of the walk aid user to correct the bio-signal obtained from the chute sensor unit of the user's biometric information chute obtained at the same time, the first ECG sensor and the handle sensor unit An electrocardiogram signal acquisition process of simultaneously acquiring each of the first and second electrocardiogram signals (ECG1) (ECG2) synchronized from the second electrocardiogram sensor of the chute sensor; Each ECG signal (ECG1) (ECG2) obtained by the first and second ECG sensors is analyzed through AD (Analog / Digital), R-peak, RRI (RR peak interval) and A parameter calculation process of sequentially calculating pulse rates (HR); When the AD value calculated by analyzing the first ECG signal ECG1 is out of the normal range during the parameter calculation process, the AD value, R-peak, RRI and pulse rate are sequentially calculated from the second ECG signal ECG2. A first correction process for performing; R-peak calculated from the AD value of the second ECG signal ECG2 when the threshold value of the R-peak calculated from the AD value of the first ECG signal ECG1 is out of the normal range during the parameter calculation process, A second correction process of sequentially calculating RRI and pulse rate; A third correction process of calculating an RRI and a pulse rate from an R-peak value calculated from the second ECG signal ECG2 when the RRI value of the first ECG signal ECG1 is out of a normal range during the parameter calculation process; If the pulse rate calculated from the R-peak and RRI of the first ECG signal ECG1 is out of the set valid pulse rate range during the parameter calculation process, it is calculated from the R-peak and RRI values of the second ECG signal ECG2. And a fourth correction process of selectively acquiring the pulse rate.

According to another aspect of the present invention, a biosignal correction acquisition process of a walker assist user obtains a biosignal from a handle sensor unit, a chute sensor unit of a biometric information chute, and a band sensor unit of a biometric information band, respectively. In the biometric signal acquiring method of the walk aid user for correcting the biometric signal obtained from the chute sensor or the band sensor of the user's biometric information chute at the same time when an error occurs in the biological signal obtained from the handle sensor unit And simultaneously obtaining the first to third ECG signals ECG1 (ECG2) and ECG3 synchronized from the first ECG sensor of the handle sensor unit, the second ECG sensor of the chute sensor unit, and the third ECG sensor of the band sensor unit. Electrocardiogram signal acquisition process; Each ECG signal (ECG1) (ECG2) (ECG3) obtained by the first to third electrocardiogram sensors is analyzed by AD (Analog / Digital), R-peak, and RRI (RR peak). a parameter calculation process of sequentially calculating an interval) and a pulse rate (HR); A first correction process of correcting and calculating a parameter of the second electrocardiogram signal ECG2 when the parameter of the first electrocardiogram signal ECG1 acquired by the first electrocardiogram sensor is outside the normal range in the parameter calculation process; And a second correction process of correcting and calculating a parameter of the third ECG signal ECG3 when the parameter of the second ECG signal ECG2 calculated in the first correction process is outside the normal range. .

Here, in the second correction process, when the AD value of the second ECG signal ECG2 corrected through the first correction process is out of a normal range, the AD value, R-peak, and RRI in the third ECG signal ECG3 are out of the normal range. And an eleventh correction process of sequentially calculating pulse rates; R calculated from the AD value of the third ECG signal ECG3 when the threshold value of the R-peak calculated from the AD value of the second ECG signal ECG2 corrected through the second correction process is out of the normal range. A twelfth correction procedure of sequentially calculating peak, RRI and pulse rate; When the RRI value of the second ECG signal ECG2 corrected through the third correction process is out of the normal range, the RRI and pulse rate are sequentially calculated from the R-peak value calculated in the third ECG signal ECG3. The thirteenth correction process; And when the pulse rate calculated from the RRI of the second ECG signal ECG2 corrected through the fourth correction process is out of a set valid pulse rate range, the R-peak and RRI values of the third ECG signal ECG3 are calculated. And a fourteenth correction process of selectively acquiring the acquired pulse rate.

According to the present invention, a method for acquiring a biometric signal correction of a walking aid user analyzes an electrocardiogram signal obtained from a handle sensor unit mounted on a handle of a walking aid, and detects a user contact failure or system error due to a movement during biometric information acquisition. If the contact failure or error occurs, the ECG signal acquired from the chute sensor mounted on the biometric information chute which is worn is replaced and compensated by the calculated parameter, so that the AD value, R-peak, and RRI to be obtained without time delay are compensated. And the pulse rate can be calculated accurately.

In addition, the present invention is an error in the acquisition of the ECG signal of the handle sensor part of the walking aid, and compensated by the ECG signal obtained from the chute sensor unit, the ECG signal of the chute sensor unit is also a contact failure or system error due to user movement, etc. If detected, the ECG signal of the band sensor unit worn on the user's arm, wrist, etc. is compensated and replaced by the calculated parameter, and according to the ECG signal analysis to be acquired without time delay even when an error occurs in the handle sensor unit and the chute sensor unit. There is an effect that can accurately calculate the AD value, R-peak, RRI and pulse rate.

1 is a block diagram of an apparatus for acquiring a pedestrian aid user's biosignal for implementing a method for obtaining a biosignal correction for a walker assistor according to the present invention;
FIG. 2 is a block diagram of FIG. 1;
3 is a flowchart illustrating a process of acquiring a biosignal correction of a walking aid user according to an exemplary embodiment of the present invention.
4 is a flowchart illustrating a process of acquiring a biosignal correction of a walking aid user according to another exemplary embodiment of the present invention.

With reference to the accompanying drawings, the configuration and operation of the biosignal correction acquisition method of the walking aid user according to an embodiment of the present invention will be described in detail as follows.

1 is a configuration diagram of a biosignal correction acquisition device of a walking aid user for implementing the present invention, which assists a person with a disability to walk and acquires an electrocardiogram signal, skin electrical resistance, skin temperature, body fat, and the like from a handle. Multifunctional walking aid (100) for measuring the health of the body, and the user is wearing a vest form to obtain the EMG signal, electrocardiogram signal, negative temperature, etc. from the mounted biosensor suit sensor unit 130 to measure the health state of the user ), And a band sensor unit 140 that obtains EMG and ECG signals from a built-in biosensor by wearing a band on a user's arm or wrist.

 FIG. 2 is a block diagram illustrating a biosignal correction obtaining apparatus of a walking aid user for implementing the present invention, wherein the handle sensor unit 110 mounted on the handle of the walking aid 100 is in contact with the palms of the user's hands to touch an ECG signal. A first ECG sensor 111 for acquiring (ECG), a skin electrical resistance sensor 112 for contacting both palms of the user to obtain a skin electrical resistance (GSR) value, and a user's left or right palm temperature (ST1). The first skin temperature sensor 113 for measuring the body and the body fat sensor 114 for measuring the body fat (BMI) in contact with both palms of the user, the angle obtained from the handle sensor unit 110 The bio signals ECG1, SGR, ST1, and BMI are converted into digital signals through the A / D converter 121 to the first microcontroller 123 that calculates various parameters for analyzing and determining the health state of the user. It is composed.

Here, the handle sensor unit 110 is composed of left and right sensor units on each of the left and right handles of the user of the handle, and each contact for measuring the bio-signals is exposed to each of the left and right handles.

The chute sensor 130 may contact the chest or the shoulder of the user in the chute to measure EMG EMG1, ECG ECG2, and skin temperature ST2, respectively. 132 and a second skin temperature sensor 133 and the second electromyography, electrocardiogram, and skin temperature signals are input and wirelessly transmitted to the ECU 120 of the walking aid 100 through the RF transmitter 134. It consists of a microcontroller 135.

The band sensor unit 140 includes a second electrocardiogram sensor 141 built in to measure the EMG signal EMG2 in the user's arm or wrist, and a third electrocardiogram sensor 142 for measuring the electrocardiogram signal ECG3. And a register 144 for latching data converted into a digital signal through the ADC 143 by multiplexing and outputting the signal obtained by multiplexing the EMG EMG2 and the EKG signal ECG3 input from the respective sensors 141 and 142. ) And the biometric data from the register 144 are wirelessly transmitted to the ECU 120 of the walking aid 100 through the wireless interface matching unit 135 and the wireless transmitter 146.

Referring to Figures 3 to 4 attached to the method for obtaining a bio-signal correction of the walking aid user according to an embodiment of the present invention configured as described above are as follows.

3 is a flowchart illustrating a process of acquiring a biosignal correction of a walking aid user according to a first embodiment of the present invention.

Simultaneously simultaneously the first and second ECG signals ECG1 and ECG2 synchronized from the first ECG sensor 111 of the handle sensor unit 110 and the second ECG sensor 132 of the chute sensor unit 130. An ECG signal acquisition process (S101) (S102) (S122); Each ECG signal (ECG1) (ECG2) obtained by the first and second ECG sensors 111 and 132 is analyzed by AD (Analog / Digital), R-peak, and RRI. A parameter calculation process of sequentially calculating (RR peak interval) and pulse rate (HR) (S103 to S110); If the AD value calculated through the analysis of the first ECG signal ECG1 during the parameter calculation process (S103 to S110) is outside the normal range, the AD value, R-peak, RRI from the second ECG signal ECG2 And first correction processes S123 to S130 for calculating pulse rates sequentially. If the threshold value of the R-peak calculated from the AD value of the first ECG signal ECG1 is out of the normal range during the parameter calculation processes S103 to S110, it is calculated from the AD value of the second ECG signal ECG2. A second correction process (S126 ˜ S130) of sequentially calculating the R-peak, RRI, and pulse rate; When the RRI value of the first ECG signal ECG1 is out of the normal range during the parameter calculation processes S123 to S130, the RRI and pulse rate are calculated from the R-peak value calculated from the second ECG signal ECG2. Third calibration process (S128 ~ S130); R-peak of the second electrocardiogram signal ECG2 when the pulse rate calculated from the R-peak of the first ECG signal ECG1 and the RRI is out of the set valid pulse rate during the parameter calculation processes S123 to S130; And a fourth correction process (S129) (S130) for selecting and acquiring the pulse rate calculated from the RRI value.

Each process made in this way will be described in detail as follows.

First, the handle sensor unit 110 and the chute sensor unit 130 of the walking aid start to drive to measure the bio-signal through the respective sensors (S101).

The ECG signals ECG1 and ECG2 are measured from the first and second ECG sensors 111 and 132 of the handle sensor unit 110 and the chute sensor unit 130, and thus, the first micro of the ECU 120 is measured. It is input to the controller 123. (S102) (S122)

That is, the first microcontroller 123 converts the ECG signal ECG1 input through the first ECG sensor 111 into a digital signal through the A / D converter 121 to receive an input, and the chute sensor unit. The ECG signal ECG2 measured by the second ECG sensor 132 of 130 is received through the RF transmitter 136 and the RF receiver 122.

Each ECG signal (ECG1) (ECG2) input to the first microcontroller 123 calculates the parameters (ADC, R-Peak, RRI, HR) for identifying the health state through the respective analysis process. (S103-S110) (S122-S130)

Here, the first microcontroller 123 first calculates each parameter through an analysis process on the ECG signal ECG1 obtained through the first ECG sensor 111, but if the ECG sensor and the user contact error, etc. When the correct electrocardiogram signal is not obtained and the ECG signal acquired from the second electrocardiogram sensor 132 is calculated to calculate necessary parameters, the user's hand is not in contact with the handle sensor 110. Even when noise occurs, the continuity of the ECG signal is maintained.

That is, the replacement of the second ECG signal ECG2 will be described in detail as follows.

First, the first microcontroller 123 converts the ECG signal ECG1 obtained from the first ECG sensor into a digital value by the A / D converter 121, and receives the converted digital value AD. It is determined whether these are normal ECG signals.

That is, it is determined whether the level of the input digital value AD is a set normal range by setting a normal reference range of a general person. For example, when the A / D converter 201 is a circuit driven by 10 bits, the voltage level can be measured up to 1024 levels, and at this time, the level in the normal range is set to at least 45 and at most 300, and is within the range. Only the normal ECG signal is determined, and if it is out of the set range, it is determined as an error such as a sensor's non-contact. Here, the minimum / maximum value of the digital value can be arbitrarily set.

If the number of digital values (AD) determined as the sensor's lead fail (S113) lasts for a predetermined time (more than about 20), it is determined as noise and the AD value from the second ECG signal ECG2 is determined. To perform the first correction process to sequentially calculate the R-peak, RRI and pulse rate. (S122 ~ S130)

If the digital conversion value AD of the ECG signal ECG1 input to the first microcontroller 123 is within the set reference range (45≤AD≤300), the ECG signal is judged as a normal ECG signal to low and high pass. After removing the noise having high and low frequency components through the filter, the first derivative and square root calculation process is performed, and the R-peak is extracted through the envelope detection algorithm (S103 ~ S105).

In this case, when the R-peak value detected through the envelope detection algorithm is less than or equal to a threshold of the set envelope, it is determined that the first ECG sensor 111 is not in contact with the user (S106), and the chute sensor 130 It is determined whether the R-peak value of the second ECG signal ECG2 calculated by the second ECG sensor 132 is greater than or equal to a threshold of the set envelope (S126). If the threshold value is greater than or equal to the threshold value, the second ECG signal ECG2 is determined. RRI and HR value of) is calculated. (S127 ~ S130)

However, when the R-peak value calculated by the second ECG signal ECG2 of the second ECG sensor 132 is less than or equal to the threshold of the set envelope, the ECG and pulse wave are returned to the initial biometric information measuring step S101. The EKG / PP signal (PPG) acquisition and the calculation of each parameter (AD, R-peak, RRI, HR) are restarted from the sensors 111 and 121. (S102 to S110) (S122 to S130)

If the R-peak value of the ECG signal ECG1 detected through the envelope detection algorithm is equal to or larger than a set threshold of the envelope, the RRI is started to be calculated (S107).

In the acquired first ECG signal ECG1, it is determined whether the sampling number of one RRI is within a set normal range. For example, if the number of samplings is set to the minimum 70 and the maximum 300, if it is within the set normal range, it is determined as a normal RRI to calculate the current pulse rate HR (S109) (S110). The minimum and maximum number of samplings can be set by the user.

If the number of samples of the acquired RRI of the first ECG signal ECG1 is outside the set normal range (RRI≤70, 300≤RRI), the number of RRI samplings from the second ECG signal ECG2 is within the set normal range. If it is within the set sampling number (S128), it is determined as a normal RRI, and the current is determined from the R-peak value of the first ECG signal ECG1 and the RRI value calculated from the second ECG signal ECG2. Pulse rate (HR) is acquired and stored. (S127 ~ S130)

However, when the number of RRI sampling of the second ECG signal ECG2 is out of the set reference range (RRI≤70, 300≤RRI), it is determined that the acquisition of the ECG signal ECG2 of the second ECG sensor 132 is failed. Returning to the initial ECG sensor acquisition step (S101) and restarting the acquisition of the corresponding ECG signals (ECG1) (ECG2) and calculation of each parameter (AD, R-peak, RRI, HR) from the ECG sensors 111 and 132. do.

If the sampling rate of the RRI of the first ECG signal ECG1 is within the normal range (70 <RRI <300), it is determined as a normal RRI for calculating the pulse rate HR, and the average value of the pulse rate measured so far is averaged HR ) And the current pulse rate (Averaged HR-HR) is within the set reference value (+15, -15) is determined to be a normal pulse rate and stores the corresponding pulse rate (HR), and again to the first bio-signal measurement step (S101) Return (S110).

On the other hand, when the difference value (Averaged HR-HR) between the calculated current pulse rate HR and the average pulse rate Average of the first ECG signal ECG1 is out of the set range (+15, -15) ( In operation S109, it is determined whether the current measured pulse rate and the average pulse rate difference value (Averaged HR-HR) of the second ECG signal ECG2 are within a predetermined range (+15, -15). If it is within the range (+ 15, -15), the current calculated pulse rate HR of the second ECG signal ECG2 is stored and then returned to the initial biosignal measurement step S101. (S129) (S130). )

FIG. 4 is a flowchart illustrating a process of acquiring a biosignal correction of a walking aid user according to another embodiment of the present invention, which is input from the first ECG sensor 111 of the handle sensor unit 110 input to the ECU 120 of the walking aid. If the first ECG signal ECG1 calculates a parameter due to an error such as a poor contact, a necessary parameter is calculated by using the parameter calculated by the second ECG sensor ECG2 of the chute sensor 130. If an error such as a lead fail occurs in the second ECG sensor ECG2 of the chute sensor unit 130, the band sensor unit 140 worn on the arm (upper and / or lower limb) may be used. Through the second correction process of calculating the necessary parameters using the parameters of the third ECG signal ECG3 received through the third ECG sensor 142, time delay due to noise such as signal breakage is prevented.

In this case, the second correction process includes the AD value of the third ECG signal ECG3 when the AD value of the second ECG signal ECG2 corrected through the first correction processes S123 to S130 is outside the normal range. An eleventh correction process (S133 to S140) for sequentially calculating an R-peak, an RRI, and a pulse rate; When the threshold value of the R-peak calculated from the AD value of the second ECG signal ECG2 corrected through the second correction processes S123 to S130 is out of the normal range, the AD of the third ECG signal ECG3 A twelfth correction process (S136 to S139) of sequentially calculating the R-peak, the RRI, and the pulse rate calculated from the values; If the RRI value of the second ECG signal ECG2 corrected through the third correction process S128 to S130 is out of the normal range, the RRI and pulse rate are calculated from the R-peak value calculated from the third ECG signal ECG3. A thirteenth correction process (S138 to S140) of sequentially calculating; And R- of the third ECG signal ECG3 when the pulse rate calculated from the RRI of the second ECG signal ECG2 corrected through the fourth correction process S129 or S130 is out of a set valid pulse rate. A fourteenth correction process (S139) (S140) is performed to selectively acquire the pulse rate calculated from the peak and RRI values.

The second to seventh correction processes 11 to 14 will be described in detail as follows.

The first electrocardiogram signal ECG1 from the first electrocardiogram sensor 111 of the handle sensor 110 input to the first microcontroller 123 and the second electrocardiogram sensor 132 of the chute sensor 130. Since the first correction process for calculating the second ECG signal ECG2 from the error generated through the parameter calculation process without calculating the time delay is the same as that shown in FIG. Omit.

That is, when the parameter of the first electrocardiogram signal ECG1 acquired by the first electrocardiogram sensor is out of the normal range in the parameter calculation process, the first correction process S123 to S130 calculates and corrects the parameters with the parameters of the second electrocardiogram signal ECG2. In the case of correction to calculate the necessary parameter in step 2), if the parameter of the second ECG signal ECG2 calculated in the first correction process is out of the normal range, the second correction is performed by calculating the parameter of the third ECG signal ECG3. Through the process (S132 ~ S140) to be corrected.

A second correction process using the third ECG signal ECG3 from the third ECG sensor 142 of the band sensor unit 140 will be described in detail as follows.

First, the ECG sensors 111 and 132 and 142 of the handle sensor 111, the chute sensor 130, and the band sensor 140 simultaneously start measuring ECG signals ECG1 to ECG3. Each of the ECG signals ECG1 to ECG3 is input from the first microcontroller 123 of the ECU 120 to start calculating the respective parameters ADC, R-peak, RRI, and HR.

In the eleventh correction processes S133 to S140, when the AD value of the second ECG signal ECG2 corrected through the first correction processes S123 to S130 is out of a normal range, the third ECG signal ECG3 may be used. In order to sequentially calculate the AD value, R-peak, RRI and pulse rate.

That is, when the AD value calculated from the first ECG sensor 111 is out of the normal range, each parameter is replaced with the AD value calculated from the ECG signal ECG2 of the second ECG sensor 132 through the first correction process. (R-Peak, RRI, HR) is calculated (S123 ~ S130), and if the second ECG signal (ECG2) is out of the normal range due to noise due to a contact error error, the band sensor unit ( The remaining parameters R-Peak, RRI, and HR are calculated after replacement and correction with the AD value calculated from the third ECG signal ECG3 received at 140. (S132 to S140).

The twelfth correction processes S136 to S140 determine noise when the R-peak value of the second ECG signal ECG2 corrected through the second correction processes S123 to S130 is less than or equal to a threshold of the set normal range. By replacing the R-peak value of the third ECG signal ECG3 with the threshold value in the normal range, the RRI and HR values are sequentially calculated.

The thirteenth correction process S138 to S140 attempts to calculate RRI and HR values from the second ECG signal ECG2 through the third correction process S128 to S130, but the RRI value is outside the set normal range. In this case, the HR value is calculated using the RRI calculated from the third ECG signal ECG3.

The fourteenth correction process S139 and S140 attempt to calculate an HR value from the second ECG signal ECG2 through the fourth correction process S129 and S130, but the HR value is out of a set normal range. In this case, the normal range of the HR value of the third electrocardiogram signal ECG3 is determined, and the HR value is stored in the normal range.

If the parameters (ADC, R-Peak, RRI, HR) obtained in the eleventh to fourth calibration processes S133 to S139 are out of the normal range, the ECG sensors 111, 132, and 142 The operation is resumed to return to the process of obtaining each ECG signal (S101), (S102), (S122), and S132, and the calculation of each parameter is restarted.

The biosignal correction acquisition method of the walker aid user according to the embodiment of the present invention described above is not limited to the above embodiments, and each parameter (AD, R-peak, RRI, HR value) or each ECG signal (ECG1 to ECG3) to determine whether a non-contact error has occurred, the setting range of the digital conversion value, the threshold value range of the R-peak value, the normal detection frequency range of the RRI or HR and The normal range with the average HR can be set by the user.

As described above, the present invention can be variously changed according to a configuration or a normal range reference value change, and any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. The technical spirit is to the extent that various changes can be made.

100: walk aid 110: handle sensor
111, 132, and 142: first to third ECG sensors
112: skin electrical resistance sensor 113,133: first and second skin temperature sensor
113: body fat sensor 120: ECU
121: A / D converter 122: RF receiver
123, 135: 1st, 2nd microcontroller
134: RF transmitter 130: chute sensor
131, 141: first and second EMG sensor 140: band sensor
143: analog / digital converter 144: register
145: wireless interface matching unit 146: wireless transmission unit

Claims (7)

Biometric signals are acquired from the handle sensor unit mounted on the handle of the walking aid and the chute sensor unit of the biomedical information chute, and if an error occurs in the biosignal obtained from the handle sensor unit, In the biosignal correction acquisition method of a walk aid user to correct with a biosignal obtained from the chute sensor,
An electrocardiogram signal obtaining step of simultaneously acquiring each of the first and second electrocardiogram signals (ECG1) (ECG2) synchronized from the first electrocardiogram sensor of the handle sensor portion and the second electrocardiogram sensor of the chute sensor portion;
Each ECG signal (ECG1) (ECG2) obtained by the first and second ECG sensors is analyzed through AD (Analog / Digital), R-peak, RRI (RR peak interval) and A parameter calculation process of sequentially calculating pulse rates (HR);
When the AD value calculated by analyzing the first ECG signal ECG1 is out of the normal range during the parameter calculation process, the AD value, R-peak, RRI and pulse rate are sequentially calculated from the second ECG signal ECG2. A first correction process for performing;
R-peak calculated from the AD value of the second ECG signal ECG2 when the threshold value of the R-peak calculated from the AD value of the first ECG signal ECG1 is out of the normal range during the parameter calculation process, A second correction process of sequentially calculating RRI and pulse rate;
A third correction process of calculating an RRI and a pulse rate from an R-peak value calculated from the second ECG signal ECG2 when the RRI value of the first ECG signal ECG1 is out of a normal range during the parameter calculation process;
If the pulse rate calculated from the R-peak and RRI of the first ECG signal ECG1 is out of the set valid pulse rate during the parameter calculation process, it is calculated from the R-peak and RRI values of the second ECG signal ECG2. And a fourth correction process of selectively acquiring the pulse rate. 4.
The method of claim 1,
And returning to the initial ECG signal acquisition process when each AD value, R-peak, RRI, and pulse rate calculated from the second ECG signal ECG2 are out of the normal range in the first to fourth correction processes. Biometric signal correction acquisition method of the walk aid user characterized in that the.
3. The method according to claim 1 or 2,
Whether the AD value of the first calibration process is normal or not is determined within a minimum and maximum voltage level set to determine a normal ECG signal, wherein the minimum voltage level is set to 40 to 50 and the maximum voltage level is set to 280 to 320.
The determination of the normal range of the R-peak in the second correction process is determined as the normal range when the detected threshold is less than or equal to the threshold of the detected envelope.
In the normal range determination of the RRI value of the third calibration process, the minimum value is set to 65 to 75, and the maximum value is set to 280 to 320,
The normal pulse rate of the fourth correction process, if the difference in the pulse rate currently calculated in the average pulse rate is within the "+15, -15" is determined as the normal range biometric signal correction acquisition method of the walk aid user.
Acquire a biosignal from the handle sensor unit mounted on the handle of the walking aid, the chute sensor unit of the biometric information chute, and the band sensor unit of the biometric information band, and simultaneously acquire an error in the biosignal obtained from the handle sensor unit. Claims [1] A method of acquiring a biosignal correction of a walking aid user for correcting a biosignal obtained from a chute sensor or a band sensor of a user's biometric information chute.
Simultaneously acquiring synchronized first to third electrocardiogram signals ECG1 (ECG2) and ECG3 from the first ECG sensor of the handle sensor unit, the second ECG sensor of the chute sensor unit, and the third ECG sensor of the band sensor unit; ECG signal acquisition process;
Each ECG signal (ECG1) (ECG2) (ECG3) obtained by the first to third electrocardiogram sensors is analyzed by AD (Analog / Digital), R-peak, and RRI (RR peak). a parameter calculation process of sequentially calculating an interval) and a pulse rate (HR);
A first correction process of correcting and calculating a parameter of the second electrocardiogram signal ECG2 when the parameter of the first electrocardiogram signal ECG1 acquired by the first electrocardiogram sensor is outside the normal range in the parameter calculation process;
A second correction process of correcting and calculating a parameter of the third ECG signal ECG3 when the parameter of the second ECG signal ECG2 calculated in the first correction process is outside the normal range. A method of obtaining biosignal correction of an brace user.
5. The method of claim 4,
In the first correction process, when the AD value calculated through the analysis of the first ECG signal ECG1 is out of the normal range, the AD value, R-peak, RRI in the second ECG signal ECG2 is out of the normal range. And a first correction process of sequentially calculating pulse rates;
The R-peak calculated from the AD value in the second ECG signal ECG2 when the threshold value of the R-peak calculated from the AD value of the first ECG signal ECG1 is out of the normal range during the parameter calculation process; A second correction process of sequentially calculating RRI and pulse rate;
A third correction for sequentially calculating the RRI and the pulse rate from the R-peak value calculated from the second ECG signal ECG2 when the RRI value of the first ECG signal ECG1 is out of the normal range during the parameter calculation process; process; And
If the HR value calculated from the R-peak and RRI of the first ECG signal ECG1 is out of a range of a set valid pulse rate during the parameter calculation process, the HR value calculated from the RRI value of the second ECG signal ECG2 is calculated. Including a fourth correction process of obtaining and selecting;
Compensating and obtaining a bio-signal of the walker aid user, characterized in that for calculating each parameter from the third electrocardiogram signal (ECG3) through the second calibration process if each parameter calculated by the correction process is out of the normal range. ,
The method according to claim 4 or 5,
In the second correction process, when the AD value of the second ECG signal ECG2 corrected through the first correction process is outside the normal range, the AD value, R-peak, RRI and An eleventh correction process of sequentially calculating pulse rates;
R calculated from the AD value of the third ECG signal ECG3 when the threshold value of the R-peak calculated from the AD value of the second ECG signal ECG2 corrected through the second correction process is out of the normal range. A twelfth correction procedure of sequentially calculating peak, RRI and pulse rate;
When the RRI value of the second ECG signal ECG2 corrected through the third correction process is out of the normal range, the RRI and pulse rate are sequentially calculated from the R-peak value calculated in the third ECG signal ECG3. The thirteenth correction process; And
If the pulse rate calculated from the RRI of the second ECG signal ECG2 corrected through the fourth correction process is out of a range of a set valid pulse rate, it is calculated from the R-peak and RRI values of the third ECG signal ECG3. And a fourteenth correction process of selectively acquiring the pulse rate.
The method according to claim 6,
And returning to the initial ECG signal acquisition process when each AD value, R-peak, RRI, and pulse rate calculated from the third ECG signal ECG3 are out of the normal range in the eleventh through fourteenth correction processes. Biometric signal correction acquisition method of the walk aid user characterized in that the.

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