Bio-signal collection system, bio-signal collection device, and bio-signal collection method, which are capable of changing bio-signal collection cycle

Abstract

The present invention relates to a bio-signal collection system, a bio-signal collection device, and a bio-signal collection method, which are capable of changing a bio-signal collection cycle. The bio-signal collection system capable of changing a bio-signal collection cycle comprises: a signal collection unit for collecting a bio-signal from a user; a cycle setting unit for setting a first cycle for collecting the bio-signal and a second cycle shorter than the first cycle; a determination unit for determining whether the bio-signal is a good signal satisfying a predetermined criterion; and a control unit for controlling a collection cycle to collect the bio-signal according to the first cycle or the second cycle.

Description

Biosignal acquisition system capable of changing biosignal acquisition cycle, biosignal acquisition device, and biosignal acquisition method

[0001] The present invention relates to a biosignal collection system, a biosignal collection device, and a biosignal collection method capable of changing the biosignal collection cycle. More specifically, the invention relates to a biosignal collection system, a biosignal collection device, and a biosignal collection method that can extend battery usage time by selecting high-quality biosignals among biosignals collected from a user and changing the collection cycle of biosignals collected at a predetermined interval according to a certain standard.

[0002] In general, electrocardiogram (ECG) detection devices are an important tool widely used in the clinical diagnosis of heart disease and can be used to diagnose symptoms such as myocardial infarction and pulmonary embolism. In particular, people who suffer from heart disease or are suspected of having heart disease need to detect sudden symptoms of cardiac abnormalities or receive early warnings.

[0003] Electrocardiogram (ECG) detection devices attach electrodes to the body to detect minute electrical signals generated when the heart beats. However, conventional ECG detection devices have the problem of being uncomfortable for the examiner to wear due to the size of the electrode devices.

[0004] Meanwhile, various wearable devices are being used to detect biosignals such as blood pressure. Conventional wearable devices are mostly worn on the wrist. However, when a wearable device is worn on the wrist in this way, there is a limitation in that the reliability of the biosignal data is low because the wearable has no components that come into contact with other parts of the body other than the body on which it is worn.

[0005] To address the problem of conventional wearable devices having low reliability of biosignal data, a ring-type sensing device capable of improving the reliability of biosignal data is being developed. Conventional ring-type sensing devices may include an inner ring, an outer ring, a top cover, etc., and ring-type sensing devices can be manufactured by assembling various parts.

[0006] A ring-type sensing device acquires a PPG signal (Photoplethysmography) from a user, calculates vascular elasticity information using the characteristic values ​​of the PPG signal, and can estimate blood pressure using the vascular elasticity information. Estimating blood pressure using the PPG signal in this way enables simpler and easier blood pressure estimation compared to the conventional method using a cuff blood pressure monitor.

[0007] However, the above-mentioned ring-type detection device acquires a PPG signal from a user while equipped with a battery having a predetermined capacity; since a situation arises where biosignals cannot be collected when the battery is discharged, it is necessary to propose a method to effectively extend the battery usage time of the ring-type detection device.

[0008] The present invention aims to solve the aforementioned problems by providing a biosignal collection system capable of changing the biosignal collection cycle, a biosignal collection device, and a biosignal collection method, which can extend battery usage time by selecting high-quality biosignals among biosignals collected from a user and changing the collection cycle of biosignals collected at a predetermined interval according to a certain standard.

[0009] A biosignal collection system capable of changing the biosignal collection period according to one aspect of the present invention, comprising: a signal collection unit for collecting biosignals from a user; a period setting unit for setting a first period for collecting the biosignals and a second period shorter than the first period; a determination unit for determining whether the biosignals are good quality signals satisfying a predetermined standard; and a control unit for controlling the collection period to collect the biosignals according to the first period or the second period; wherein

[0010] The control unit collects biosignals at the start of the first cycle and at each second cycle within the first cycle, wherein 1) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) is less than a predetermined set value, the biosignals are collected at each second cycle, and 2) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle, the biosignals are not collected during the remaining second cycle.

[0011] In addition, it is preferable that the control unit repeatedly applies the processes of 1) and 2) at each first cycle.

[0012] In addition, it is preferable that the signal collection unit be provided in a ring-shaped signal collection device worn on a finger to collect the user's biosignal.

[0013] Additionally, the apparatus includes an external device that receives the biosignal collected by the signal collection device, and it is preferable that any one of the period setting unit, the discrimination unit, or the control unit is provided in the external device or the signal collection device.

[0014] In addition, it is desirable that the first and second cycles are adjustable by the cycle setting unit.

[0015] In addition, the above-mentioned determination unit preferably determines whether the user's acceleration signal and PPG signal (Photoplethysmography) are good or bad using a pre-prepared deep learning model.

[0016] In addition, it is preferable for the above-mentioned determination unit to determine a defect if either the acceleration signal or the PPG signal deviates from a predetermined standard.

[0017]

[0018] Meanwhile, a biosignal collection device capable of changing the biosignal collection period according to another aspect of the present invention comprises: a signal collection unit for collecting a biosignal from a user; a period setting unit for setting a first period for collecting the biosignal and a second period shorter than the first period; a determination unit for determining whether the biosignal is a good signal satisfying a predetermined standard; and a control unit for controlling the collection period to collect the biosignal according to the first period or the second period.

[0019] The control unit collects biosignals at the start point of the first cycle and at each second cycle within the first cycle, wherein 1) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) is less than a predetermined set value, the biosignals are collected at each second cycle, and 2) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle, the biosignals are not collected during the remaining second cycle.

[0020] Here, it is preferable that the control unit repeatedly applies the processes of 1) and 2) at each first cycle.

[0021] Here, the biosignal collection device is preferably in the form of a ring worn on a finger to collect the user's biosignal.

[0022] Here, it is preferable that the first and second cycles are adjustable by the cycle setting unit.

[0023] Here, it is preferable that the above-mentioned determination unit determines whether the user's acceleration signal and PPG signal (Photoplethysmography) are good or bad using a pre-prepared deep learning model.

[0024] Here, it is preferable that the above determination unit determines it to be defective if either the acceleration signal or the PPG signal deviates from a predetermined standard.

[0025]

[0026] Meanwhile, a biosignal collection method capable of changing the biosignal collection period according to another aspect of the present invention comprises: a step of collecting a biosignal from a user; a period setting step of setting a first period for collecting the biosignal and a second period shorter than the first period; a good product determination step of determining whether the biosignal is a good product signal satisfying a predetermined standard; and a control step of controlling the collection period to collect the biosignal according to the first period or the second period.

[0027] The above control step is characterized by collecting biosignals at the start point of the first cycle and at each second cycle within the first cycle, wherein 1) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) is less than a predetermined set value, the biosignals are collected at each second cycle, and 2) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle, the biosignals are not collected during the remaining second cycle.

[0028] In addition, in the signal collection step, it is preferable that the biosignal be collected by a ring-shaped signal collection device worn on a finger.

[0029] In addition, it is preferable to include a step of transmitting the biosignal collected by the signal collection device to an external device.

[0030] In addition, it is desirable that the first and second cycles are adjustable in the above cycle setting step.

[0031] In addition, the above-mentioned step of determining whether the product is good or bad is preferably determined using a pre-prepared deep learning model to determine whether the user's acceleration signal and PPG signal (Photoplethysmography) are good or bad.

[0032] In addition, the above-mentioned good / bad product determination step preferably determines a defect if either the acceleration signal or the PPG signal deviates from a predetermined standard.

[0033] The biosignal collection system, biosignal collection device, and biosignal collection method according to the present invention can extend battery usage time by selecting high-quality biosignals among biosignals collected from a user and changing the collection cycle of biosignals collected at a predetermined period according to a certain standard.

[0034] For example, according to an embodiment of the present invention, the period for collecting the biosignal is set to a first period and a second period shorter than the first period. If the criterion for determining that the biosignal sensed at each second period within the first period is a good signal satisfies a predetermined criterion, the measurement at each remaining second period within the first period is excluded, and the biosignal is measured in the next first period, thereby providing the effect of extending the battery usage of the biosignal collection device.

[0035] FIG. 1 is a block diagram of a biosignal collection system according to one embodiment of the present invention,

[0036] FIG. 2 is a block diagram of a biosignal collection system according to another embodiment of the present invention,

[0037] Figure 3 is a flowchart showing the process of determining the signal quality of collected biosignals,

[0038] Figure 4 is a flowchart showing the fluctuation process of the biosignal collection cycle,

[0039] FIG. 5 is a diagram exemplifying the process of fluctuation in the biosignal collection cycle.

[0040] FIG. 6 is a block diagram of a biosignal collection device according to an embodiment of the present invention,

[0041] FIG. 7 is a drawing illustrating a signal measuring device employed in an embodiment of the present invention.

[0042] Fig. 8 is an exploded perspective view of Fig. 7.

[0043] FIG. 9 is a block diagram of a biosignal collection method according to one embodiment of the present invention.

[0044] This specification clarifies the scope of the present invention and explains the principles of the present invention and discloses embodiments so that those skilled in the art can practice the present invention. The disclosed embodiments may be implemented in various forms.

[0045] Expressions such as "comprising" or "may comprise" that may be used in various embodiments of the present invention indicate the existence of the disclosed corresponding function, operation, or component, and do not limit one or more additional functions, operations, or components. Furthermore, in various embodiments of the present invention, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0046] When it is stated that a component is "connected or coupled" to another component, it should be understood that the component may be directly connected or coupled to the other component, but that a new component may also exist between the component and the other component. On the other hand, when it is stated that a component is "directly connected" or "directly coupled" to another component, it should be understood that no new component exists between the component and the other component.

[0047] The terms "first," "second," etc., as used in this specification may be used to describe various components, but the components should not be limited by these terms. The terms are used solely for the purpose of distinguishing one component from another.

[0048]

[0049] The present invention relates to a biosignal collection system (100), a biosignal collection device (200), and a biosignal collection method. By changing the cycle for collecting biosignals, high-quality biosignals can be selected and acquired, particularly when collecting biosignals from a wearable device, while minimizing battery consumption.

[0050]

[0051] FIG. 1 is a block diagram of a biosignal collection system according to one embodiment of the present invention, and FIG. 2 is a block diagram of a biosignal collection system according to another embodiment of the present invention. FIG. 3 is a flowchart showing a process for determining the signal quality of collected biosignals, and FIG. 4 is a flowchart showing a process for varying the biosignal collection cycle. FIG. 5 is a diagram exemplarily showing the process of varying the biosignal collection cycle, and FIG. 6 is a block diagram of a biosignal collection device according to one embodiment of the present invention. FIG. 7 is a diagram showing a signal measuring device employed in an embodiment of the present invention, and FIG. 8 is an exploded perspective view of FIG. 7. FIG. 9 is a block diagram of a biosignal collection method according to one embodiment of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0052]

[0053] As illustrated in FIG. 1, a biosignal collection system (100) capable of changing the biosignal collection period according to an embodiment of the present invention includes a signal collection unit (10), a period setting unit (20), a discrimination unit (30), and a control unit (40).

[0054]

[0055] The signal collection unit (10) collects biosignals from a user. In the present invention, the biosignals include a photoplethysmography signal (hereinafter referred to as PPG signal) obtained from the user, and may also include an electrocardiogram (ECG) signal, an electroencephalogram (EEG) signal, etc. The PPG signal enables the analysis of characteristics related to the user's biosignals, such as PTT (Pulse Transit Time) and HRV (Heart rate variation), and can be used to derive biosignals related to heart rate (HR), blood pressure values, etc.

[0056] According to an embodiment of the present invention, the signal collection unit (10) can collect at least one of the PPG signal, ECG signal, and EEG signal. The biosignal is not limited to the above description as long as it is a signal that can be utilized to check or diagnose the user's physical condition, disease, etc., and may include various signals obtained from the user. For example, it may include signals obtained from the user to calculate the user's blood pressure, blood sugar, or oxygen saturation.

[0057] Additionally, the signal collection unit (10) may be provided in a signal collection device (200) that measures the user's biosignals. The signal collection device (200) may be in the form of a wearable device that the user can wear. For example, the signal collection device (200) may be implemented as a device in the form of a ring, band, or watch worn on a finger, wrist, or ankle, or provided in clothing. That is, it may be implemented in various forms such as a ring type, wristwatch type, bracelet type, anklet type, wristband type, ankle band type, hairband type, or glasses type. According to the present embodiment, the signal collection unit (10) is provided in a ring-shaped signal collection device (200) to collect the user's biosignals, and the ring-shaped signal collection device (200) will be described first.

[0058] Referring to FIGS. 7 and 8, the signal collection device (200) may include an external electrode (101), an internal electrode (102), an insulation unit (103), a top cover (104), and a plurality of sensors (105).

[0059] The external electrode (101) may have an arc shape with one section open. The external electrode may be composed of a conductor and may function as an electrode for measuring an electrocardiogram (ECG) in contact with the user's body. The external electrode (101) may form the exterior of a ring-shaped signal collection device (10).

[0060] The internal electrode (102) may have a ring shape, and a plurality of openings (106) may be formed to install a plurality of sensors (105). The internal electrode (102) may be composed of a conductor and may function as an electrode for measuring an electrocardiogram. Additionally, the internal electrode (102) may form the inner ring portion of a ring, and the internal electrode (102) may come into contact with the user's finger.

[0061] An insulating unit (103) may be placed between an external electrode (101) and an internal electrode (102). The insulating unit (103) may enable electrical insulation between the external electrode (101) and the internal electrode (102).

[0062] The top cover (104) may have an arc shape to close a portion of the outer electrode (101) and may be formed with the same curvature as the outer electrode (101) to form a ring together with the outer electrode. The top cover (104) may be coupled to a portion of the outer electrode (101) to form the exterior of the ring-shaped signal collection device (10).

[0063] A plurality of sensors (105) may be positioned to protrude inward from the inner surface of the inner electrode (102) and come into contact with the user's finger. A plurality of sensors (105) may each be positioned in the opening (106) of the inner electrode (102). A plurality of sensors (105) may be a first sensor unit (105) that collects PPG signals (photoplethysmograms) from the user at different locations. Additionally, a second sensor unit (106) may be positioned between the outer electrode (101) and the inner electrode (102) in the signal collection device (10). The second sensor unit (106) may be an acceleration sensor positioned between the outer electrode (101) and the inner electrode (102) to detect the user's movement. According to an embodiment of the present invention, the signal collection device (200) may be equipped with a separate sensor for collecting electrocardiogram (ECG) signals and brainwave (EEG) signals.

[0064]

[0065] The above-mentioned period setting unit (20) is provided to set a period for collecting the biosignal, and according to an embodiment of the present invention, it may be configured to set a first period for collecting the biosignal and a second period shorter than the first period.

[0066] The above first cycle can basically be set as a cycle for repeating measurements. The above first cycle can be set by considering the number of times basic biometric information to be collected during the day and night when based on a 24-hour period.

[0067] According to the European Society of Hypertension’s ESH guidelines regarding the determination of hypertension, the above-mentioned first cycle is recommended to be based on the collection of at least 20 biosignals during the day and at least 7 biosignals at night. In this way, the above-mentioned first cycle can be appropriately set by referring to such references. As illustrated in FIG. 5, according to the present embodiment, the above-mentioned first cycle is shown as being set to 10 minutes. Of course, the above-mentioned first cycle can be set to a value other than 10 minutes. The above-mentioned first cycle can be set by considering the resources of the signal collection unit (10), such as storage space or battery capacity.

[0068] The second cycle is set to have a shorter duration than the first cycle. Since the second cycle has a shorter duration than the first cycle, it may have a structure in which the second cycle is substantially repeated between the first cycles. According to the present embodiment, the second cycle is set to have a plurality of cycles within the first cycle.

[0069] This is intended to allow signal collection for the remaining second cycle to be omitted if the quality of the biosignal repeatedly measured at each second cycle within the first cycle is good and satisfies a predetermined number of times standard. According to the present embodiment, as illustrated in FIG. 5, the second cycle is set to 2 minutes. Of course, the second cycle can be set to a value other than 2 minutes. The second cycle can be set considering the resources of the signal collection unit (10), such as storage space or battery capacity. That is, the first cycle and the second cycle can be controlled by the cycle setting unit (20).

[0070]

[0071] The above-described determination unit (30) is provided to determine whether the biosignal is a good signal that satisfies a predetermined standard. According to the present embodiment, as shown in FIG. 3, the determination unit (30) can determine whether the user's acceleration signal and PPG signal (Photoplethysmography) collected by the signal collection unit (10) are good using a machine learning model or a deep learning model prepared in advance. In addition, the determination unit (30) can determine that the acceleration signal or the PPG signal is defective if either of them deviates from a predetermined standard.

[0072] The deep learning model described above may be a model trained to determine a signal satisfying a predetermined criterion regarding an ACC signal or a PPG signal collected through an accelerometer or a PPG signal collection sensor. Additionally, the deep learning model may be trained to determine whether the acceleration signal is good, whether the PPG signal is good, or whether the acceleration signal and the corresponding PPG signal are associated. Specifically, signal quality may be determined by the morphology of the user's ACC signal and PPG signal. For example, when there is a lot of user movement, the ACC signal may change significantly instantaneously due to the movement, and the morphology of the PPG signal may be greatly distorted by Motion Artifacts (MA). Conversely, even if there is no movement of the user, if the ring-type signal acquisition device is not worn properly—for example, if the hand is very cold or the ring rotates and does not make proper contact—the ACC signal value remains constant, but the PPG signal contains a lot of high-frequency noise, causing the morphology to be significantly damaged, making it impossible to determine it as a good product. According to an embodiment of the present invention, a model is used to determine whether it is a good product by utilizing a deep learning model trained based on sufficient data of the ACC signal and the PPG signal. The deep learning model may utilize an artificial neural network (ANN), a recurrent neural network (RNN), etc., and various hidden layers may be used. Meanwhile, to improve accuracy, the deep learning model may be trained to determine whether the signal to be determined (the PPG signal or acceleration signal, etc.) is a good product by utilizing basic physical information such as the user's age, gender, weight, and height.

[0073] Meanwhile, the above-mentioned discrimination unit (30) may use an algorithmized model to determine the quality of bio-information by extracting features from the user's bio-signal. Specifically, the above-mentioned algorithmic model may be algorithmized to determine whether the bio-information is of good quality by, for example, extracting a predetermined characteristic point from the user's bio-information and comparing it with predetermined reference data. For example, if the bio-information is a PPG signal, the algorithm may be algorithmized to determine whether the signal quality of the PPG signal is of good quality by extracting a predetermined characteristic point from the user's PPG signal and comparing it with predetermined reference data. The above-mentioned algorithmic model is sufficient if it is capable of determining the quality of signal information obtained from the user, and the target may include various types other than PPG signals, such as acceleration signals, blood glucose, or signals capable of estimating oxygen saturation.

[0074] To explain the PPG signal in more detail, the characteristic points of the PPG signal can be extracted from a specific point in time or a periodic signal. The specific point in time or periodic signal can be selected from biosignals that are measured repeatedly, either continuously or intermittently. If the characteristic points are periodic signals, certain representative features can be selectively extracted and utilized from the periodic signals. Information regarding the characteristic points obtained through such specific point in time or periodic signals may be one or more, and these can be combined and applied to determine whether a certain PPG signal is of good quality. Furthermore, the algorithm model allows the PPG signal to be analyzed by applying various methods, such as linear regression analysis, multiple regression analysis, and non-linear regression analysis.

[0075]

[0076] The control unit (40) controls the collection cycle to collect the biosignal according to the first cycle or the second cycle. According to an embodiment of the present invention, as shown in FIG. 4, the biosignal is collected at the starting point of the first cycle and at each second cycle within the first cycle, but if a predetermined condition is satisfied, the collection of the biosignal in the remaining second cycle within the first cycle may be omitted. Specifically, according to an embodiment of the present invention, the collection of the biosignal is performed at the starting point of the first cycle, and then the collection of the biosignal is performed at each second cycle. For example, if the starting point of the first cycle is referred to as the first collection, the starting point of the second cycle is the second collection, and the third collection is performed in the subsequent second cycle. Thus, the process of collecting the biosignal over time is defined as the sequential collection of the biosignal. At this time, 1) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) is less than a predetermined set value, the control unit (40) maintains the collection of biosignals every second cycle. That is, the process of continuously collecting biosignals every second cycle is repeated until the first cycle is completed. And 2) if the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle, the control unit (40) does not collect biosignals for the remaining second cycle. According to the present embodiment, the control unit (40) repeatedly applies the processes of 1) and 2) every first cycle.

[0077]

[0078] As illustrated in FIG. 5, the first cycle is set to 10 minutes, and the signal collection unit (10) collects biosignals from the user every 10 minutes. At this time, biosignals are collected every second cycle within the first cycle. Since the second cycle is set to 2 minutes, biosignal collection can be performed four times within the first cycle. Referring to Part 1 of FIG. 5, this is a case where the signal at 10:00 is determined to be good, the signal at 10:02 is determined to be defective, and the signal at 10:04 is again determined to be good. If the starting point of the first cycle and a predetermined setting value for biosignals measured every second cycle within the first cycle that are determined to be good are set twice, since the criteria at 10:04 in Part 1 are satisfied, the signal collection at 10:06 and 10:08 is omitted, and signal collection is performed again at the starting point of the next first cycle. It is preferable to set the above predetermined setting value, that is, the starting point of the first cycle and the reference number of good quality biosignals collected every second cycle within the first cycle, to be at least two times so as to have representativeness of the biosignals collected within the first cycle.

[0079] Additionally, referring to Part 2 of FIG. 5, the first cycle is set to 10 minutes, and the signal collection unit (10) collects a bio-signal from the user every 10 minutes. At this time, a bio-signal is collected every second cycle within the first cycle. Since the second cycle is set to 2 minutes, the collection of bio-signals four times within the first cycle is the same as in Part 1.

[0080] Referring to Part 2 above, this is a case where the signal collected at 10:12 is determined to be defective, the signal collected at 10:14 is determined to be good, and the signal collected at 10:16 is again determined to be good. Since the signal measured at each second cycle is determined to be good at the predetermined set value twice, and the predetermined set value criterion in Part 21 is satisfied at 10:16, signal collection at the next time at 10:18 is omitted, and signal collection is performed again at the start of the first cycle of the next time.

[0081] In this way, when the number of times a product is determined to be good in Part 1 and Part 2 satisfies a predetermined set value standard, the control unit (40) omits the collection of biosignals during the remaining second cycle within the first cycle and collects biosignals in the next first cycle, thereby allowing the collected biosignals within the first cycle to satisfy a sufficient standard and save the battery of the signal collection unit (10).

[0082] If, in Part 1, a predetermined number of times, i.e., two good signal samples are not obtained by 10:06, the signal collection continues at 10:08, so the cycle for collecting biosignals can be maintained as the second cycle. Likewise, if, in Part 2, a predetermined number of times, i.e., two good signal samples are not obtained by 10:16, the signal collection continues at 10:18, so the cycle for collecting biosignals can be maintained as the second cycle.

[0083] Meanwhile, according to one embodiment of the present invention, as illustrated in FIG. 2, the biosignal collection system (200) includes an external device (50) that receives biosignals collected by the signal collection unit (10), and any one of the period setting unit (20), the discrimination unit (30), or the control unit (40) may be provided in the external device (50). For example, the external device (50) may be a mobile device, and at least one of the period setting unit (20), the discrimination unit (30), or the control unit (40) may be provided in the mobile device. Of course, at least one of the period setting unit (20), the discrimination unit (30), or the control unit (40) may be provided in the signal collection device (200) along with the signal collection unit (10).

[0084]

[0085] A biosignal collection system (100) capable of changing the biosignal collection cycle according to the above configuration can extend battery usage time by selecting high-quality biosignals among the biosignals collected from a user and changing the collection cycle of biosignals collected at a predetermined cycle according to a certain standard. According to the present embodiment, if the biosignal collection process for a part of the second cycle is omitted, it brings about the effect of changing the cycle for collecting biosignals.

[0086]

[0087] Meanwhile, according to another aspect of the present invention, as illustrated in FIG. 6, a biosignal collection device (200) capable of changing the biosignal collection cycle is proposed.

[0088] First, the biosignal collection device (200) capable of changing the biosignal collection cycle comprises a signal collection unit (10) for collecting biosignals from a user, a cycle setting unit (20) for setting a first cycle for collecting biosignals and a second cycle shorter than the first cycle, a determination unit (30) for determining whether the biosignals are good quality signals satisfying a predetermined standard, and a control unit (30) for controlling the collection cycle to collect the biosignals according to the first cycle or the second cycle. According to an embodiment of the present invention, the biosignal collection device (200) is formed in the form of a ring worn on a finger to collect the biosignals of a user.

[0089] According to the present embodiment, biosignals are collected at the starting point of the first cycle and at each second cycle within the first cycle, wherein the control unit (40) 1) maintains the collection of biosignals at each second cycle when the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) is less than a predetermined set value, and 2) does not collect biosignals at each second cycle when the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle. Furthermore, the control unit (40) may repeatedly apply the processes of 1) and 2) at each first cycle. That is, biosignals are collected at the start of the first cycle of the next cycle, and then biosignals are collected every second cycle thereafter, and depending on whether the conditions of 1) and 2) above are met, whether biosignals are collected every second cycle within the first cycle period of the next cycle can be determined.

[0090] The first and second cycles can be adjusted by the cycle setting unit (20) above. The user can set the first cycle and / or the second cycle at the cycle setting unit (20) provided in the ring-shaped collection device. The first and second cycles can be set according to the ESH guidelines. According to the present embodiment, in the biosignal collection system (100) or biosignal collection device (200) described above, a display unit may be provided to provide information to the user regarding the cycle setting. The display unit may be provided in the biosignal collection device (200) or an external device (50).

[0091] The above-described determination unit (30) determines whether the user's acceleration signal (ACC signal) and PPG signal (Photoplethysmography) are of good quality using a pre-prepared deep learning model, and the determination unit may determine that the acceleration signal or the PPG signal is defective if either one deviates from a predetermined standard. The process of generating the above-described deep learning model is described above, so a repetitive explanation is omitted. However, the above-described determination unit (30) may use an algorithm model designed to extract specific points of the acquired biosignal and determine signal quality by comparing them with already secured reference data. Furthermore, the configuration and operation of the above-described signal collection unit (10), period setting unit (20), determination unit (30), and control unit (40) can be applied exactly as described in the above-described biosignal collection system (100), so a repetitive explanation is omitted.

[0092] In this way, the biosignal collection device (200) according to the above configuration, similar to the biosignal collection system (100) of constants, has the biosignal collection period set to a first period and a second period shorter than the first period. When the number of times the biosignal sensed sequentially at the start of the first period and at each second period within the first period is judged as a good signal satisfies a predetermined standard, the measurement at each remaining second period within the first period is excluded, and the biosignal is measured again at the start of the next first period, thereby providing the effect of extending the battery usage of the biosignal collection device (200).

[0093]

[0094] Meanwhile, according to another aspect of the present invention, a biosignal collection method capable of changing the biosignal collection cycle is proposed as illustrated in FIG. 9.

[0095] A biosignal collection method according to an embodiment of the present invention comprises: a step of collecting a biosignal from a user (S1); a period setting step (S2) of setting a first period for collecting the biosignal and a second period shorter than the first period; a good product determination step (S3) of determining whether the biosignal is a good product signal satisfying a predetermined standard; and a control step (S4) of controlling the collection period to collect the biosignal according to the first period or the second period. Furthermore, according to an embodiment of the present invention, a biosignal is collected at the starting point of the first cycle and at each second cycle within the first cycle, wherein the control step (S4) 1) maintains the collection of biosignals at each second cycle when the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) is less than a predetermined set value, and 2) when the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle, the biosignal is not collected during the remaining second cycle.

[0096] According to the present embodiment, in the signal collection step (S1), the biosignal may be collected by a ring-shaped signal collection device (200) worn on a finger, and the method may include a step (S5) of transmitting the biosignal collected by the signal collection device (200) to an external device (50). The external device (50) may include, for example, a mobile terminal, and the biosignal information transmitted to the external device (50) may be transmitted again to a server, etc.

[0097] In the above cycle setting step (S2), the first cycle and the second cycle can be adjusted. In the above cycle setting step (S2), the first cycle and / or the second cycle can be set in the cycle setting unit (20) provided in the ring-type bio-information collection device (200). The cycle setting unit (20) may be provided in an external device (50) constituting the ring-type bio-information collection device (200) or the system (100). In addition, the first and second cycles may be set according to the ESH guidelines. According to the present embodiment, a display unit for providing information about the cycle setting to the user may be provided in the above-described bio-signal collection system (100) or bio-signal collection device (200).

[0098] The above-mentioned good quality determination step (S3) is a step for determining whether the user's acceleration signal and PPG signal (Photoplethysmography) are of good quality. According to an embodiment of the present invention, the good quality determination step (S3) is substantially performed by the determination unit (30) described above. In addition, according to this embodiment, the determination of whether the acceleration signal and PPG signal are of good quality can be performed using a pre-prepared deep learning model. The good quality determination step (S3) may determine that the product is defective if either the acceleration signal or the PPG signal deviates from a predetermined standard. The process of generating the deep learning model has been described above, so a repeated explanation is omitted. However, the good quality determination step (S3) may use an algorithm model designed to extract specific points of the acquired biosignal and determine signal quality by comparing them with already secured reference data. Furthermore, the configuration and operation of the above signal collection unit (10), period setting unit (20), discrimination unit (30), and control unit (40) can be applied exactly as described in the above biosignal collection system (100), so a repetitive explanation is omitted.

[0099] In this way, the biosignal collection method according to the above configuration, similar to the biosignal collection system (100) and biosignal information collection device (200) described above, selects biosignals of high quality among the biosignals collected from the user and collects biosignals every first or second cycle, and if the number of times a signal is judged to be of good quality satisfies a predetermined standard, the measurement of the remaining second cycles within the first cycle can be excluded to provide the effect of extending the battery usage time.

[0100]

[0101] As such, the present invention has been described with reference to the embodiments illustrated in the drawings; however, this is merely illustrative, and those skilled in the art will understand that various modifications and variations of the embodiments are possible therefrom. Accordingly, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. A signal collection unit that collects biosignals from a user; A period setting unit for setting a first period for collecting the above biosignal and a second period shorter than the first period; A determination unit for determining whether the above biosignal is a good product signal satisfying a predetermined standard; A control unit that controls the collection cycle to collect the above biosignal according to a first cycle or a second cycle; comprising, The above control unit is, A biosignal is collected at the starting point of the first cycle and at each second cycle within the first cycle, 1) If the number of biosignals sequentially measured that are determined to be good by the determination unit (30) is less than a predetermined set value, the biosignals are maintained to be collected at the second cycle, and 2) A biosignal collection system capable of changing the biosignal collection cycle, characterized in that when the number of biosignals sequentially measured and determined to be good by the determination unit (30) satisfies a predetermined set value and a remaining second cycle exists within the first cycle, biosignals are not collected during the remaining second cycle.

2. In Paragraph 1, A biosignal collection system capable of changing the biosignal collection cycle, characterized in that the above control unit repeatedly applies the processes of 1) and 2) at each first cycle.

3. In Paragraph 1, A biosignal collection system capable of changing the biosignal collection cycle, characterized in that the above-mentioned signal collection unit is provided in a ring-shaped signal collection device worn on a finger to collect the user's biosignal.

4. In Paragraph 3, It includes an external device that receives the biosignal collected by the above signal collection device, A biosignal collection system capable of changing the biosignal collection period, characterized in that any one of the above-mentioned period setting unit, the above-mentioned discrimination unit, or the above-mentioned control unit is provided in the above-mentioned external device or the above-mentioned signal collection device.

5. In Paragraph 1, A biosignal collection system capable of changing the biosignal collection period, characterized in that the first period and the second period are adjustable by the above-mentioned period setting unit.

6. In Paragraph 1, A biosignal collection system capable of changing the biosignal collection cycle, characterized in that the above-described determination unit determines whether the user's acceleration signal and PPG signal (Photoplethysmography) are of good quality using a pre-prepared deep learning model.

7. In Paragraph 6, A biosignal collection system capable of changing the biosignal collection cycle, characterized in that the above-mentioned determination unit determines a defect when either the acceleration signal or the PPG signal deviates from a predetermined standard.

8. In a biosignal collection device for collecting a user's biosignals, A signal collection unit that collects biosignals from a user; A period setting unit for setting a first period for collecting the above biosignal and a second period shorter than the first period; A determination unit for determining whether the above biosignal is a good product signal satisfying a predetermined standard; A control unit that controls the collection cycle to collect the above biosignal according to a first cycle or a second cycle; comprising, The above control unit is, A biosignal is collected at the starting point of the first cycle and at each second cycle within the first cycle, 1) If the number of biosignals sequentially measured that are determined to be good by the determination unit (30) is less than a predetermined set value, the biosignals are maintained to be collected at the second cycle, and 2) A biosignal collection device capable of changing the biosignal collection cycle, characterized in that when the number of biosignals sequentially measured that are determined to be good by the discrimination unit (30) satisfies a predetermined set value and a remaining second cycle exists within the first cycle, biosignals are not collected during the remaining second cycle.

9. In Paragraph 8, A biosignal collection device capable of changing the biosignal collection cycle, characterized in that the above control unit repeatedly applies the processes of 1) and 2) every first cycle.

10. In Paragraph 8, The above biosignal collecting device is a biosignal collecting device capable of changing the biosignal collecting cycle, characterized in that it is in the form of a ring worn on a finger to collect the user's biosignal.

11. In Paragraph 8, A biosignal collection device capable of changing the biosignal collection period, characterized in that the first period and the second period are adjustable by the above-mentioned period setting unit.

12. In Paragraph 8, A biosignal acquisition device capable of changing the biosignal acquisition cycle, characterized in that the above-described determination unit determines whether the user's acceleration signal and PPG signal (Photoplethysmography) are of good quality using a pre-prepared deep learning model.

13. In Paragraph 12, A biosignal collection device capable of changing the biosignal collection cycle, characterized in that the above-mentioned determination unit determines a defect when either the acceleration signal or the PPG signal deviates from a predetermined standard.

14. A step of collecting biosignals from the user; A period setting step for setting a first period for collecting the above biosignal and a second period shorter than the first period; A quality determination step for determining whether the above biosignal is a quality signal satisfying a predetermined standard; A control step for controlling the collection cycle to collect the above biosignal according to a first cycle or a second cycle; comprising, The above control step is, A biosignal is collected at the starting point of the first cycle and at each second cycle within the first cycle, 1) If the number of biosignals sequentially measured that are determined to be good by the determination unit (30) is less than a predetermined set value, the biosignals are maintained to be collected at the second cycle, and 2) A biosignal collection method capable of changing the biosignal collection cycle, characterized in that when the number of biosignals sequentially measured that are determined to be good by the determination unit (30) satisfies a predetermined set value and there is a remaining second cycle within the first cycle, biosignals are not collected during the remaining second cycle.

15. In Paragraph 14, A biosignal collection method capable of changing the biosignal collection cycle, characterized in that, in the above signal collection step, the biosignal is collected by a ring-shaped signal collection device worn on a finger.

16. In Paragraph 14, A biosignal collection method capable of changing the biosignal collection cycle, characterized by including the step of transmitting the biosignal collected by the signal collection device to an external device.

17. In Paragraph 14, A biosignal collection method capable of changing the biosignal collection period, characterized in that the first period and the second period are adjustable in the above-mentioned period setting step.

18. In Paragraph 14, A biosignal collection method capable of changing the biosignal collection cycle, characterized in that the above-mentioned goodness determination step determines whether the user's acceleration signal and PPG signal (Photoplethysmography) are good or bad using a pre-prepared deep learning model.

19. In Paragraph 18, A biosignal collection method capable of changing the biosignal collection cycle, characterized in that the above-mentioned good / bad product determination step determines a defect when either the acceleration signal or the PPG signal deviates from a predetermined standard.

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