Personalized alarm provision system using biometric information and motion information on basis of doppler signal

Abstract

The present invention relates to a personalized alarm provision system using biometric information and motion information on the basis of a Doppler signal, comprising: an acquisition device that emits a radar signal to a subject and analyzes a Doppler signal generated through a reflected wave acquired by reflecting the emitted radar signal to acquire bio-signal or motion signal information of the subject from the Doppler signal; a server; and a guardian terminal.

Description

A personalized alarm system that uses biometric and movement information based on Doppler signals.

[0001] The present invention relates to a personalized alarm system that provides information on risk situations based on individual statistics based on biometric information and movement signal information acquired using a Doppler signal.

[0002] Recently, the number of people in need of care or attention has been increasing in Korean society. This population can be defined as those who require assistance in emergencies or who have no living companions. Examples include the elderly, people with disabilities, and single-person households. Recent surveys show that the elderly population has surpassed 9 million, while the number of single-person households and registered disabled persons has also surpassed 6.6 million and 2.6 million, respectively. Furthermore, the number of people who die alone, often due to the absence of a living companion, has exceeded 20,000.

[0003] Furthermore, the rise of personal terminals and the growing demand for personal healthcare have led to the emergence of various solutions and applications that collect personal healthcare data and use it to provide personalized healthcare content. Collecting this personalized healthcare data involves the use of wearable or installed devices. Wearable devices often eliminate the need for preprocessing of measured data because they capture healthcare data close to the body. However, installed devices measure the user's physical activity information from a distance, which increases the likelihood of noise in the measured data and makes it difficult to distinguish subtle differences.

[0004] In addition, existing risk notification services for the elderly living alone were based on general risk situations rather than personalized ones, and thus had the disadvantage of not being able to provide personalized risk notification services.

[0005] In order to solve the problems of the prior art as described above, one embodiment of the present invention provides a device for obtaining bio-signal and motion signal information using a Doppler signal, which can accurately obtain bio-signal or motion signal information of a subject from the Doppler signal by emitting a radar signal to a subject and analyzing a Doppler signal generated through a reflected wave obtained by reflecting the emitted radar signal.

[0006] In addition, the present invention is to provide a personalized, customized risk situation alarm based on bio-information and movement information derived using a bio-signal and movement signal information acquisition device using the above Doppler signal.

[0007] The personalized alarm provision system of the present invention may include a biosignal and movement signal information acquisition device using a Doppler signal, a server, and a guardian terminal.

[0008] The device for obtaining bio-signal and movement signal information using the Doppler signal may include a Doppler signal obtaining unit that emits a radar signal to a subject, obtains a signal that is reflected and returned by the radar signal to obtain a Doppler signal, and processes the Doppler signal to obtain a first phase Doppler signal and a second phase Doppler signal, a Doppler signal processing unit that processes the first phase Doppler signal and the second phase Doppler signal, respectively, to obtain first signal information and second signal information, and a signal information output unit that obtains the first signal information and the second signal information, and analyzes the first signal information and the second signal information, respectively, using a preset algorithm to obtain bio-signal information and movement signal information.

[0009] The above server can obtain lifestyle pattern information by statistically calculating the time spent in each space of a household based on the movement signal information and bio-signal information, and can set up a living space and a dangerous space based on the lifestyle pattern information.

[0010] The above server obtains lifestyle pattern information by statistically calculating the time spent in each space based on the movement signal information transmitted from the biometric and movement signal information acquisition devices installed in each space of a household, and sets the space where the subject stays the longest as the first living space, and sets the toilet or bathroom as the first risk space.

[0011] The entrance is set as the second risk space, and a space that is neither the first risk space nor the second risk space but has a shorter stay time than the first residence space can be set as the second residence space.

[0012] The server may generate a first alarm signal when the time the subject stays in the first risk space during the first time period is n minutes based on the lifestyle pattern information, and when the time the subject stays in the first risk space during the first time period has passed 5n minutes.

[0013] Based on the above lifestyle pattern information, if the time the subject stays in the second risk space is n minutes, a second alarm signal can be generated if the time the subject stays in the second risk space has passed 10n minutes.

[0014] A third alarm signal may be generated when the ratio of the time the subject stays in the first living space exceeds 8 times the ratio of the time the subject leaves the first living space.

[0015] The above server can generate a fourth alarm signal when the activity level of the subject decreases during a preset time period.

[0016] The above server is based on the above motion signal information, and can determine that the activity has occurred when the movement speed of the subject in the motion signal is greater than a preset value or the movement target area is outside a preset range.

[0017] The server may, based on the movement signal information and the bio-signal information, derive statistics on the maximum heart rate and respiration rate, minimum heart rate and respiration rate, and average heart rate and respiration rate in a sleeping and non-sleeping state, and determine the normal range of the subject's heart rate and respiration rate in a sleeping and non-sleeping state based on the statistically derived maximum heart rate and respiration rate, minimum heart rate and respiration rate, and average heart rate and respiration rate in a sleeping and non-sleeping state, and may generate a fourth alarm signal if a heart rate and respiration rate that are outside the normal range are derived in the sleeping or non-sleeping state.

[0018] The above personalized alarm provision system may further include an external terminal that transmits exercise information of the subject.

[0019] The server receives the subject's age, gender, exercise information, medication information, and weight information from the guardian terminal, determines a first heart rate range according to the subject's age in the non-sleep state, and then, if the subject is female, determines a second heart rate corrected to be 5 to 10% higher than the first heart rate, and if the subject is male, determines a third heart rate corrected to be 5 to 10% lower than the first heart rate, and then, if it is determined that the subject is exercising within a predetermined cycle at a predetermined amount of exercise or more based on the exercise information received from the external terminal, determines a fourth heart rate corrected to be 5 to 10% lower than the second heart rate, and determines a fifth heart rate corrected to be 5 to 10% lower than the third heart rate, and then, based on the subject's medication information and weight information, determines a sixth heart rate corrected to the fourth heart rate, and determines a seventh heart rate corrected to the fifth heart rate. If the above-mentioned sixth heart rate and seventh heart rate exceed the preset range, an emergency situation may be determined to have occurred and a fifth alarm signal may be generated.

[0020] A personalized alarm provision system using bio-information and movement information based on a Doppler signal according to one embodiment of the present invention emits a radar signal to a subject, and analyzes a Doppler signal generated through a reflected wave obtained by reflecting the emitted radar signal, thereby having the effect of accurately obtaining bio-signal or movement signal information of the subject from the Doppler signal.

[0021] The personalized alarm provision system using biometric information and movement information based on Doppler signals of the present invention has the effect of notifying a guardian of a dangerous situation by judging the dangerous situation differently for each individual based on statistical lifestyle pattern information for each individual's situation.

[0022] FIG. 1 is a block diagram of a personalized alarm provision system using biometric information and movement information based on Doppler signals according to an embodiment of the present invention.

[0023] FIG. 2 is a block diagram of a device for acquiring biosignal and motion signal information using a Doppler signal according to an embodiment of the present invention.

[0024] Fig. 3 is a block diagram of the Doppler signal acquisition unit of Fig. 2.

[0025] Figure 4 is a block diagram of the Doppler signal processing unit of Figure 2.

[0026] FIG. 5 is a flowchart of a method for obtaining biosignal and motion signal information using a Doppler signal according to an embodiment of the present invention.

[0027] Figure 6 is a flowchart of step S11 of Figure 5.

[0028] Figure 7 is a flowchart of step S13 of Figure 5.

[0029] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. When adding reference numerals to components in each drawing, identical components may have the same numerals as much as possible even if they are shown in different drawings. In addition, when describing the present embodiments, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the technical idea of ​​the present invention, the detailed description may be omitted. When "includes," "has," "consists of," etc. are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include a case in which the plural is included unless specifically stated otherwise.

[0030] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present disclosure. These terms are only intended to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by the terms.

[0031] In a description of the positional relationship of components, when it is described that two or more components are "connected," "combined," or "connected," it should be understood that the two or more components may be directly "connected," "combined," or "connected," but that the two or more components may also be further "interposed" with another component to be "connected," "combined," or "connected." Here, the other component may be included in one or more of the two or more components that are "connected," "combined," or "connected" to each other.

[0032] In the description of the temporal flow relationship related to components, operation methods, or manufacturing methods, for example, when the temporal or flow relationship is described as “after”, “following”, “next to”, “before”, etc., it may also include cases where it is not continuous, unless “immediately” or “directly” is used.

[0033] Meanwhile, when numerical values ​​or corresponding information (e.g., levels, etc.) for components are mentioned, even without separate explicit description, the numerical values ​​or corresponding information may be interpreted as including an error range that may occur due to various factors (e.g., process factors, internal or external impact, noise, etc.).

[0034] A personalized alarm provision system (100) using biometric information and movement information based on Doppler signals according to one embodiment of the present invention may include a biometric signal and movement signal information acquisition device (10) using Doppler signals, a server (20), and a guardian terminal (30).

[0035]

[0036] 1. Device for acquiring biosignal and movement signal information using Doppler signal (10)

[0037] FIGS. 2 to 4 illustrate an embodiment of a biosignal and movement signal information acquisition device (10) using a Doppler signal according to the present invention. FIG. 2 is a block diagram of a biosignal and movement signal information acquisition device (10) using a Doppler signal according to an embodiment of the present invention, FIG. 3 is a block diagram of a Doppler signal acquisition unit of FIG. 2, and FIG. 4 is a block diagram of a Doppler signal processing unit of FIG. 2.

[0038] The device (10) for acquiring bio-signal and movement signal information using the above Doppler signal can be installed in multiple locations within a single household. Preferably, the device (10) for acquiring bio-signal and movement signal information using the above Doppler signal can be installed in a bedroom, living room, small room, bathroom, entrance, etc. within a single household.

[0039] In addition, the bio-signal and movement signal information acquisition device (10) using the Doppler signal can be installed on the ceiling to acquire a wide range of bio-signal and movement signal information. In addition, in some cases, the bio-signal and movement signal information acquisition device (10) using the Doppler signal can be installed in multiple units within a single space. For example, the bio-signal and movement signal information acquisition device (10) using the Doppler signal can be installed on the bathroom ceiling and bathroom wall. In this case, there is an advantage in that fall detection can be performed more accurately.

[0040] Hereinafter, a device for acquiring biosignal and movement signal information using a Doppler signal of the present invention will be described in detail using FIGS. 2 to 4.

[0041] A device (10) for acquiring bio-signal and movement signal information using a Doppler signal according to one embodiment of the present invention is configured to acquire a Doppler signal after emitting a radar signal to a subject, and to perform multiple filtering and amplification processes on the acquired Doppler signal to acquire a bio-signal and movement signal. To this end, the device (10) for acquiring bio-signal and movement signal information using a Doppler signal according to one embodiment of the present invention may be configured to include a Doppler signal acquisition unit (11), a Doppler signal processing unit (12), and a signal information output unit (13), as illustrated in FIG. 2.

[0042] The Doppler signal acquisition unit (11) is configured to emit a radar signal to a subject, acquire a signal that is reflected and returned by the radar signal to acquire a Doppler signal, and process the Doppler signal to acquire a first phase Doppler signal and a second phase Doppler signal.

[0043] In the case of radar signals, a Doppler signal is generated when there is movement of the subject. The Doppler signal acquisition unit (11) of the present invention can be configured to emit a radar signal to the subject by utilizing the characteristics of such Doppler radar and acquire a Doppler signal through the reflected signal. To this end, the Doppler signal acquisition unit (11) according to one embodiment of the present invention can include a radar signal emission module (11A), a Doppler signal conversion module (11B), and a Doppler signal separation module (11C), as illustrated in FIG. 3.

[0044] The radar signal emission module (11A) is configured to emit a radar signal to a target, and the Doppler signal conversion module (11B) is configured to obtain a radar signal reflected from the target and returned to obtain a Doppler signal. In one embodiment of the present invention, a Doppler signal can be obtained using a 24 GHz radar signal.

[0045] The Doppler signal separation module (11C) is configured to process the Doppler signal obtained from the Doppler signal conversion module (11B) to obtain a first phase Doppler signal and a second phase Doppler signal. Here, the first phase Doppler signal may be processed to have a phase difference of 90 degrees from the second phase Doppler signal.

[0046] When the first phase Doppler signal and the second phase Doppler signal are acquired from the Doppler signal acquisition unit (11), the Doppler signal processing unit (12) according to one embodiment of the present invention is configured to process the first phase Doppler signal and the second phase Doppler signal, respectively, to acquire first signal information and second signal information. The first signal information and the second signal information can be acquired from the first phase Doppler signal and the second phase Doppler signal, respectively.

[0047] The first signal information and the second signal information obtained through the first phase Doppler signal can be defined as 1-1 signal information and 1-2 signal information, and the first signal information and the second signal information obtained through the second phase Doppler signal can be defined as 2-1 signal information and 2-2 signal information.

[0048] Here, the 1-1 signal information may be heart rate, and the 2-1 signal information may be respiratory rate information.

[0049] Additionally, the above 1-2 signal may be a movement speed, and the above 2-2 signal may be an area of ​​a movement target.

[0050] For this purpose, the Doppler signal processing unit (12) of the present invention can be formed to include a first Doppler signal processing module (12A), a second Doppler signal processing module (12B), and a third Doppler signal processing module (12C) as illustrated in FIG. 4. For convenience of explanation, the Doppler signal processing unit (12) of the present invention is described below as using three or more Doppler signal processing modules. However, the present invention is not limited thereto and may operate using N Doppler signal processing modules set by an administrator.

[0051] The first Doppler signal processing module (12A) is configured to perform first filtering and first amplification on the first phase Doppler signal and the second phase Doppler signal to obtain a first-first phase Doppler processing signal and a second-first phase Doppler processing signal.

[0052] The first Doppler signal processing module (12A) is configured to perform processing on the first phase Doppler signal and the second phase Doppler signal, and although the present invention has described that one first Doppler signal processing module (12A) performs processing on the first and second phase Doppler signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 1-1 Doppler signal processing module for processing the first phase Doppler signal and a 1-2 Doppler signal processing module for processing the second phase Doppler signal may each be provided.

[0053] The first filtering performed in the first Doppler signal processing module (12A) may be a process in which a low-pass filter (LPF) is performed by applying a filter of a frequency band set by the administrator. In addition, the first amplification performed in the first Doppler signal processing module (12A) may be a process in which the input first and second phase Doppler signals are amplified by an amplification multiple set by the administrator. An active filter may be used as the first Doppler signal processing module (12A) according to one embodiment of the present invention, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0054] When the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal are generated through the first filtering and the first amplification, the generated 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal are transmitted to the 2nd Doppler signal processing module (12B) and the 3rd Doppler signal processing module (12C) through a branch circuit. The 2nd Doppler signal processing module (12B) and the 3rd Doppler signal processing module (12C) are connected in parallel, and both the 2nd Doppler signal processing module (12B) and the 3rd Doppler signal processing module (12C) process the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, but the two modules are configured to perform different processing.

[0055] To be more specific, the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) are connected to the first Doppler signal processing module (12A), and the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) can be connected to each other in a parallel structure.

[0056] This is because, in one embodiment of the present invention, the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) are configured to process signals below a preset frequency or to process signals above a preset reference frequency, respectively. In one embodiment of the present invention, when the second Doppler signal processing module (12B) is configured to process signals below a preset frequency, the third Doppler signal processing module (12C) may be configured to process signals above a preset frequency. This simply means that processing of different frequency bands is performed through different Doppler signal processing modules, and it is also possible for the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) to perform processing of opposite frequency bands.

[0057] In addition, by applying such a parallel structure, in one embodiment of the present invention, the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) may have different amplification ratios. To this end, the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) may each be formed such that an additional Doppler signal processing module is further connected. The fourth Doppler signal processing module (12D) described later in the present invention may be the additional Doppler signal processing module described above.

[0058] The second Doppler signal processing module (12B) is configured to perform second filtering and second amplification on the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal to obtain the 1-1 signal information and the 2-1 signal information.

[0059] The second Doppler signal processing module (12B) is configured to perform processing on the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, and although the present invention has described that one second Doppler signal processing module (12B) performs processing on the 1-1 and 2-1 phase Doppler processing signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 2-1 Doppler signal processing module for processing the 1-1 phase Doppler signal and a 2-2 Doppler signal processing module for processing the 2-1 phase Doppler signal may each be provided.

[0060] The second filtering performed in the second Doppler signal processing module (12B) may be a process in which a DC component is removed from the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, and a high-pass filter (HPF) is performed by applying a filter of a frequency band set by the administrator.

[0061] In addition, the second amplification performed in the second Doppler signal processing module (12B) may be a process of amplifying the input 1-1 phase Doppler processing signal and the 2-2 phase Doppler processing signal by an amplification multiplier set by the administrator. An active filter may be used as the second Doppler signal processing module (12B) according to one embodiment of the present invention, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0062] The third Doppler signal processing module (12C) is configured to obtain the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, which are the same signals as the signals processed by the 2nd Doppler signal processing module (12B), and to perform third filtering and third amplification on the obtained 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal to obtain 1-2 signal information and 2-2 signal information.

[0063] The third Doppler signal processing module (12C) is configured to perform processing on the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, and although the present invention has described that one third Doppler signal processing module (12C) performs processing on the 1-1 and 2-1 phase Doppler processing signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 3-1 Doppler signal processing module for processing the 1-1 phase Doppler signal and a 3-2 Doppler signal processing module for processing the 2-1 phase Doppler signal may each be provided.

[0064] The third filtering performed in the third Doppler signal processing module (12C) may be a process in which a low-pass filter (LPF) and a high-pass filter (HPF) are performed by applying a filter of a frequency band range set by the administrator. In addition, the third amplification performed in the third Doppler signal processing module (12C) may be a process in which the input 1-1 and 2-1 phase Doppler processing signals are amplified by an amplification multiplier set by the administrator. An active filter may be used as the third Doppler signal processing module (12C) according to one embodiment of the present invention, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0065] Meanwhile, in another embodiment of the present invention, a fourth Doppler signal processing module (12D) may be further included as illustrated in FIG. 4. The fourth Doppler signal processing module (12D) may be configured to process the processing result of the second Doppler signal processing module (12C). At this time, when the fourth Doppler signal processing module (12D) exists, the first Doppler signal processing module (12A), the second Doppler signal processing module (12B), and the fourth Doppler signal processing module (12D) may be connected in series. In addition, the signal output from the second Doppler signal processing module (12B) may be a first-second phase Doppler processing signal and a second-second phase Doppler processing signal, rather than the first-first signal information and the second-first signal information.

[0066] When the 1-2 phase Doppler processing signal and the 2-2 phase Doppler processing signal are obtained from the 2nd Doppler signal processing module (12B), the 4th Doppler signal processing module (12D) is configured to perform the 4th filtering and the 4th amplification on the 1-2 phase Doppler processing signal and the 2-2 phase Doppler processing signal to obtain the 1-1 signal information and the 2-1 signal information.

[0067] The fourth Doppler signal processing module (12D) is configured to perform processing on the 1-2 phase Doppler processing signal and the 2-2 phase Doppler processing signal, and although the present invention has described that one fourth Doppler signal processing module (12D) performs processing on the 1-2 and 2-2 phase Doppler processing signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 4-1 Doppler signal processing module for processing the 1-2 phase Doppler signal and a 4-2 Doppler signal processing module for processing the 2-2 phase Doppler signal may each be provided.

[0068] The fourth filtering performed in the fourth Doppler signal processing module (12D) may be a process of applying a low-pass filter (LPF) by applying a filter of a frequency band range set by the administrator to the first-second phase Doppler processing signal and the second-second phase Doppler processing signal, and the fourth amplification may be a process of amplifying the input first-second phase Doppler processing signal and the second-second phase Doppler processing signal by an amplification multiplier set by the administrator.

[0069] An active filter may be used as the fourth Doppler signal processing module (12D) according to one embodiment of the present invention, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0070] In addition, the fourth Doppler signal processing module (12D) can be configured to apply a DC offset voltage set by the administrator to the signal on which the third filtering and second amplification have been performed.

[0071] In one embodiment of the present invention, the 1-1 signal information and the 2-1 signal information may be information including bio-motion information, and the 1-2 signal information and the 2-2 signal information may be information including movement motion information.

[0072] Accordingly, the signal information output unit (13) according to one embodiment of the present invention is formed to obtain first signal information and second signal information, and analyze the first signal information and the second signal information using a preset algorithm to obtain biosignal information and movement signal information.

[0073] The signal information output unit (13) of the present invention can obtain 1-1 signal information and 2-1 signal information as the first signal information, and 1-2 signal information and 2-2 signal information as the second signal information. That is, in the present invention, the first signal information can be defined as including biological motion information, and the second signal information can be defined as including movement motion information.

[0074] The signal information output unit (13) may be configured to apply the acquired bio-motion information and movement motion information to a preset algorithm to acquire and output bio-signal information and movement signal information from each piece of motion information. The bio-signal information and movement signal information acquired by the signal information output unit (13) may be transmitted to the communication unit (14).

[0075] The above communication unit (14) can transmit biosignal information and movement signal information received from the signal information output unit (13) to the server (20) via wired or wireless communication.

[0076]

[0077] 2. Method for obtaining biosignal and movement signal information using Doppler signals

[0078] FIGS. 5 to 7 illustrate an embodiment of a method for obtaining biosignal and motion signal information using a Doppler signal according to the present invention. FIG. 5 is a flowchart of a method for obtaining biosignal and motion signal information using a Doppler signal according to an embodiment of the present invention, FIG. 6 is a flowchart of step S11 of FIG. 5, and FIG. 7 is a flowchart of step S13 of FIG. 5.

[0079] Hereinafter, a method for obtaining biosignal and motion signal information using Doppler signals according to the present invention will be described in detail using FIGS. 5 to 7. Furthermore, for convenience of explanation, FIG. 2 will be used for the description below; however, the present invention is not limited thereto, and devices, systems, terminals, etc. capable of performing various similar functions or operations may also be utilized.

[0080] A method (10) for obtaining bio-signal and movement signal information using a Doppler signal according to an embodiment of the present invention is configured to acquire a Doppler signal after emitting a radar signal to a subject, and to perform multiple filtering and amplification processes on the acquired Doppler signal to acquire a bio-signal and movement signal. To this end, the method (10) for obtaining bio-signal and movement signal information using a Doppler signal according to an embodiment of the present invention may be configured to include a Doppler signal obtaining step (S11), a Doppler signal processing step (S13), and a signal information output step (S15), as illustrated in FIG. 5.

[0081] The Doppler signal acquisition step (S11) is configured to emit a radar signal to a subject using a Doppler signal acquisition unit, acquire a signal that is reflected and returned by the radar signal to acquire a Doppler signal, and process the Doppler signal to acquire a first phase Doppler signal and a second phase Doppler signal.

[0082] In the case of radar signals, a Doppler signal is generated when there is movement of the subject. The Doppler signal acquisition step (S11) of the present invention can be configured to emit a radar signal to the subject by utilizing the characteristics of such Doppler radar and acquire a Doppler signal through the reflected signal. To this end, the Doppler signal acquisition step (S11) according to one embodiment of the present invention may include a radar signal emission step (S111), a Doppler signal conversion step (S113), and a Doppler signal separation step (S115), as illustrated in FIG. 6.

[0083] The radar signal emission step (S111) is configured to emit a radar signal to a target, and the Doppler signal conversion step (S113) is configured to obtain a Doppler signal by obtaining a radar signal reflected back from the target. In one embodiment of the present invention, a Doppler signal can be obtained using a 24 GHz radar signal.

[0084] The Doppler signal separation step (S115) is configured to process the Doppler signal obtained from the Doppler signal conversion step (S113) to obtain a first phase Doppler signal and a second phase Doppler signal. Here, the first phase Doppler signal may be processed to have a phase difference of 90 degrees from the second phase Doppler signal.

[0085] When the first phase Doppler signal and the second phase Doppler signal are acquired in the Doppler signal acquisition step (S11), the Doppler signal processing step (S13) according to one embodiment of the present invention is configured to process the first phase Doppler signal and the second phase Doppler signal using a Doppler signal processing unit to acquire first signal information and second signal information. The first signal information and the second signal information can be acquired from the first phase Doppler signal and the second phase Doppler signal, respectively.

[0086] The first signal information and the second signal information obtained through the first phase Doppler signal can be defined as 1-1 signal information and 1-2 signal information, and the first signal information and the second signal information obtained through the second phase Doppler signal can be defined as 2-1 signal information and 2-2 signal information.

[0087] For this purpose, the Doppler signal processing step (S13) of the present invention can be formed to include a first Doppler signal processing step (S131), a second Doppler signal processing step (S133), and a third Doppler signal processing step (S135) as illustrated in FIG. 7. Hereinafter, for convenience of explanation, the Doppler signal processing step (S13) of the present invention is described as using three or more Doppler signal processing steps, but the present invention is not limited thereto and may operate using N Doppler signal processing steps set by an administrator.

[0088] The first Doppler signal processing step (S131) ​​is configured to perform first filtering and first amplification on the first phase Doppler signal and the second phase Doppler signal to obtain a first-first phase Doppler processing signal and a second-first phase Doppler processing signal.

[0089] The first Doppler signal processing step (S131) ​​is configured to perform processing on the first phase Doppler signal and the second phase Doppler signal, and although the present invention has described that one first Doppler signal processing step (S131) ​​performs processing on the first and second phase Doppler signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 1-1 Doppler signal processing module for processing the first phase Doppler signal and a 1-2 Doppler signal processing module for processing the second phase Doppler signal may each be provided.

[0090] The first filtering performed in the first Doppler signal processing step (S131) ​​may be a process in which a low-pass filter (LPF) is performed by applying a filter of a frequency band set by the administrator. In addition, the first amplification performed in the first Doppler signal processing step (S131) ​​may be a process in which the input first and second phase Doppler signals are amplified by an amplification multiple set by the administrator. In the first Doppler signal processing step (S131) ​​according to one embodiment of the present invention, processing of the Doppler signal may be performed using an active filter, wherein the active filter may be a filter in which amplification and filtering are performed simultaneously by utilizing circuit characteristics.

[0091] When the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal are generated through the first filtering and the first amplification, the generated 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal are transmitted to the 2nd Doppler signal processing stage (S133) and the 3rd Doppler signal processing stage (S135) through a branch circuit. The 2nd Doppler signal processing stage (S133) and the 3rd Doppler signal processing stage (S135) are performed using the 2nd Doppler signal processing module and the 3rd Doppler signal processing module that are connected in parallel, and both the 2nd Doppler signal processing stage (S133) and the 3rd Doppler signal processing stage (S135) process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, but the two stages are configured to perform different processing.

[0092] To be more specific, the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) are connected to the first Doppler signal processing module (12A), and the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) can be connected to each other in a parallel structure.

[0093] This is because, in one embodiment of the present invention, the second Doppler signal processing module (12B) and the third Doppler signal processing module (12C) are configured to process signals below a preset frequency or to process signals above a preset reference frequency, respectively. In one embodiment of the present invention, when the second Doppler signal processing module (12B) is configured to process signals below a preset frequency, the third Doppler signal processing module (12C) may be configured to process signals above a preset frequency. This simply means that processing of different frequency bands is performed through different Doppler signal processing modules, and it is also possible for the second Doppler signal processing module and the third Doppler signal processing module to perform processing of opposite frequency bands.

[0094] In addition, by applying such a parallel structure, in one embodiment of the present invention, the second Doppler signal processing module and the third Doppler signal processing module may have different amplification ratios. To this end, the second Doppler signal processing module and the third Doppler signal processing module may each be configured to further connect an additional Doppler signal processing module. The fourth Doppler signal processing module described later in the present invention may be the additional Doppler signal processing module described above.

[0095] The second Doppler signal processing step (S133) is configured to perform second filtering and second amplification on the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal to obtain the 1-1 signal information and the 2-1 signal information.

[0096] The second Doppler signal processing step (S133) is configured to perform processing on the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, and although the present invention has described that one second Doppler signal processing step (S133) performs processing on the 1-1 and 2-1 phase Doppler processing signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 2-1 Doppler signal processing module for processing the 1-1 phase Doppler signal and a 2-2 Doppler signal processing module for processing the 2-1 phase Doppler signal may each be provided.

[0097] The second filtering performed in the second Doppler signal processing step (S133) may be a process in which a DC component is removed from the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, and a high-pass filter (HPF) is performed by applying a filter of a frequency band set by the administrator.

[0098] In addition, the second amplification performed in the second Doppler signal processing step (S133) may be a process of amplifying the input 1-1 phase Doppler processing signal and the 2-2 phase Doppler processing signal by an amplification multiplier set by the administrator. In the second Doppler signal processing step (S133) according to one embodiment of the present invention, an active filter may be used, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0099] The third Doppler signal processing step (S135) is configured to obtain a 1-1 phase Doppler processing signal and a 2-1 phase Doppler processing signal, which are the same signals as the signals processed in the 2nd Doppler signal processing step (S133), and to perform a third filtering and a third amplification on the obtained 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal to obtain 1-2 signal information and 2-2 signal information.

[0100] The third Doppler signal processing step (S135) is configured to perform processing on the 1-1 phase Doppler processing signal and the 2-1 phase Doppler processing signal, and although the present invention has described that one third Doppler signal processing step (S135) performs processing on the 1-1 and 2-1 phase Doppler processing signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 3-1 Doppler signal processing module for processing the 1-1 phase Doppler signal and a 3-2 Doppler signal processing module for processing the 2-1 phase Doppler signal may each be provided.

[0101] The third filtering performed in the third Doppler signal processing step (S135) may be a process in which a low-pass filter (LPF) and a high-pass filter (HPF) are performed by applying a filter of a frequency band range set by the administrator. In addition, the third amplification performed in the third Doppler signal processing step (S135) may be a process in which the input 1-1 and 2-1 phase Doppler processing signals are amplified by an amplification multiplier set by the administrator. An active filter may be used as the third Doppler signal processing step (S135) according to an embodiment of the present invention, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0102]

[0103] Meanwhile, in another embodiment of the present invention, a fourth Doppler signal processing step (S137) may be further included as illustrated in FIG. 7. The fourth Doppler signal processing step (S137) may be configured to process the processing result of the second Doppler signal processing step (S135). At this time, when the fourth Doppler signal processing step (S137) exists, the first Doppler signal processing step (S131), the second Doppler signal processing step (S133), and the fourth Doppler signal processing step (S137) may be connected in series. In addition, the signal output from the second Doppler signal processing step (S133) may be a first-second phase Doppler processing signal and a second-second phase Doppler processing signal, rather than the first-first signal information and the second-first signal information.

[0104] When the 1-2 phase Doppler processing signal and the 2-2 phase Doppler processing signal are obtained from the 2nd Doppler signal processing step (S133), the 4th Doppler signal processing step (S137) is formed to perform the 4th filtering and the 4th amplification on the 1-2 phase Doppler processing signal and the 2-2 phase Doppler processing signal to obtain the 1-1 signal information and the 2-1 signal information.

[0105] The fourth Doppler signal processing step (S137) is configured to perform processing on the 1-2 phase Doppler processing signal and the 2-2 phase Doppler processing signal, and although the present invention has described that one fourth Doppler signal processing step (S137) performs processing on the 1-2 and 2-2 phase Doppler processing signals, the present invention is not necessarily limited thereto, and as illustrated in FIG. 7, a 4-1 Doppler signal processing module for processing the 1-2 phase Doppler signal and a 4-2 Doppler signal processing module for processing the 2-2 phase Doppler signal may each be provided.

[0106] The fourth filtering performed in the fourth Doppler signal processing step (S137) may be a process of applying a low-pass filter (LPF) by applying a filter of a frequency band range set by the administrator to the first-second phase Doppler processing signal and the second-second phase Doppler processing signal, and the fourth amplification may be a process of amplifying the input first-second phase Doppler processing signal and the second-second phase Doppler processing signal by an amplification multiplier set by the administrator.

[0107] In the fourth Doppler signal processing step (S137) according to one embodiment of the present invention, an active filter may be used, and the active filter is a filter that performs amplification and filtering simultaneously by utilizing circuit characteristics.

[0108] In addition, the fourth Doppler signal processing step (S137) can be configured to apply a DC offset voltage set by the administrator to the signal on which the third filtering and second amplification have been performed.

[0109] In one embodiment of the present invention, the 1-1 signal information and the 2-1 signal information may be information including bio-motion information, and the 1-2 signal information and the 2-2 signal information may be information including movement motion information.

[0110] Accordingly, the signal information output step (S15) according to one embodiment of the present invention is configured to obtain first signal information and second signal information using a signal information output unit, and analyze the first signal information and the second signal information using a preset algorithm to obtain biosignal information and movement signal information.

[0111] The signal information output step (S15) of the present invention can obtain first-1 signal information and second-1 signal information as first signal information, and obtain first-2 signal information and second-2 signal information as second signal information. That is, in the present invention, the first signal information can be defined as including biological motion information, and the second signal information can be defined as including movement motion information.

[0112] The signal information output step (S15) can be configured to apply the acquired bio-motion information and movement motion information to a preset algorithm to obtain and output bio-signal information and movement signal information from each piece of motion information.

[0113]

[0114] 3. Server (20)

[0115] The server can receive biosignal information and movement signal information from the communication unit (14).

[0116] The above server (20) can extract the subject's heart rate information and respiration rate information from the received biosignal information.

[0117] In addition, the server (20) can extract the movement speed of the subject and the area of ​​the movement target from the movement signal information.

[0118] A device (10) for acquiring bio-signal / movement information using Doppler signals can be installed in multiple locations within a single household. Preferably, the device (10) for acquiring bio-signal and movement information using Doppler signals can be installed in a bedroom, living room, small room, entrance, bathroom, etc. within a single household.

[0119] Here, the biosignal information may be heart rate and / or respiratory rate information.

[0120] Additionally, the above motion signal information may be the movement speed of the subject and / or the area of ​​the movement target.

[0121] The server (20) can obtain lifestyle pattern information by statistically calculating the time spent in each space based on the movement signal information transmitted from the bio-signal and movement signal information acquisition device (10) installed in each space of a household. For example, the server (20) can receive movement signal information from each bio-signal and movement signal information acquisition device (10) installed in a bedroom, living room, small room, bathroom, entrance, etc., and based on this, statistically calculate the time spent in each bedroom, living room, small room, bathroom, and entrance, thereby generating lifestyle pattern information.

[0122] The lifestyle pattern information generated in this way varies depending on each individual's lifestyle habits, and emergency situations can be predicted based on this.

[0123] Preferably, the server (20) can set a first living space, a second living space, a first risk space, and a second risk space based on the lifestyle pattern information.

[0124] The above first living space is the space where the subject stays the longest and can be a bedroom or living room.

[0125] The above-mentioned second living space refers to a space that is neither a first risk space nor a second risk space, but has a shorter duration of stay than the first living space. For example, the above-mentioned second living space may be a small room.

[0126] The first risk space mentioned above may be a bathroom or toilet, which is a space where people spend less time than the first living space and where statistically the most falls occur, but is difficult to detect from the outside.

[0127] The above second risk space has a shorter stay time than the above first residential space and the above first risk space, and many fall accidents occur there, but it can be an entrance that is easy to notice from the outside.

[0128] The server (20) may generate a first emergency signal or a second emergency signal if the time spent in the first or second risk space is longer than a preset range compared to the lifestyle pattern information. In this case, the preset times for the first and second risk spaces may differ.

[0129] For example, according to the above lifestyle pattern information, if the time that the subject stays in the first risk space in the first time zone is n minutes, the first alarm signal can be generated when 5n minutes have passed. For example, if the average time that the subject stays in the bathroom between 9:00 and 12:00 is 5 minutes, the first alarm signal can be generated when the subject stays in the bathroom for 25 minutes. In addition, the server (20) can generate the first alarm signal when the subject stays in the bathroom for 100 minutes, if the average time that the subject stays in the bathroom between 5:00 and 8:00 is 20 minutes.

[0130] In addition, the server (20) can generate a second alarm signal when the time spent in the second risk space is longer than a preset range compared to the lifestyle pattern information. For example, if the time spent by the subject in the second risk space is n minutes according to the lifestyle pattern information, the server (20) can generate a second alarm signal when 10n minutes have elapsed. For example, if the average time spent by the subject in the entrance is 2 minutes, the server (20) can generate a second alarm signal when the subject stays in the entrance for 50 minutes.

[0131] In addition, if the ratio of the time the subject stays in the first living space and the time he / she leaves the first living space is outside a preset range, a third alarm signal may be generated. For example, if the average ratio of the time he / she stays in the first living space and the time he / she leaves the first living space in the lifestyle pattern information is 7:3, and the ratio of the time he / she stays in the first living space is outside a preset range of 8 (for example, the ratio of the time he / she stays in the first living space and the time he / she leaves the first living space is 8.2:1.8), a third alarm signal may be generated.

[0132] The server (20) may generate a fourth alarm signal if the subject's activity level continues to decrease during a preset time period. For example, if the subject's average activity level is 80 between 9:00 and 17:00 based on the lifestyle pattern information, the server (20) may generate a fourth alarm signal if the subject's average activity level continues to decrease to 60, 50, 30, etc. during the same time period.

[0133] The above activity amount is based on the above movement signal information, and the activity amount is determined to have occurred when the movement speed of the subject in the movement signal is greater than a preset value, or when the movement target area in the movement signal is outside a preset range.

[0134] The above server (20) can determine whether the subject is sleeping or not based on the transmitted bio-signal information and movement signal information.

[0135] The server (20) determines that the subject is in a non-sleeping state when the subject's movement speed is greater than a preset range, the movement target area is greater than a preset range, and the time for which the heart rate among the bio-signal information is greater than a preset range is greater than a preset range.

[0136] The above server (20) can derive statistics on the maximum heart rate and / or respiration rate, minimum heart rate and / or respiration rate, and average heart rate and / or respiration rate in a non-sleep state based on the bio-signal information.

[0137] In addition, the server (20) can derive statistics on the maximum heart rate and / or respiration rate, minimum heart rate and / or respiration rate, and average heart rate and / or respiration rate in a sleeping state based on the bio-signals.

[0138] The above server (20) can determine the normal range of heart rate and / or respiratory rate of each subject (individual) in a sleeping and non-sleeping state based on the above statistical data. As described above, the normal range of the health state can be different in a sleeping state and a non-sleeping state.

[0139] If the server (20) determines that the subject is in an emergency situation when it detects a heart rate and / or respiratory rate that is outside the normal range in a sleeping or non-sleeping state, it can generate a fourth alarm signal.

[0140] The above server (20) can receive the subject's age, gender, exercise information, medication information, and weight information from the guardian terminal (30).

[0141] First, the server (20) determines a first heart rate range according to the subject's age in a non-sleep state. Here, the first heart rate range refers to a heart rate range according to the subject's age, which is known in advance.

[0142] Thereafter, the server (20) determines a second heart rate corrected to be 5 to 10% higher than the first heart rate if the gender information received is female. If the gender information is male, the server (20) determines a third heart rate corrected to be 5 to 10% lower than the first heart rate.

[0143] Thereafter, the server (20) can determine the subject's heart rate based on the exercise information received from the external terminal. The external terminal can be a terminal of an exercise facility such as a health club and can transmit the subject's exercise amount and exercise period information to the server (20). Alternatively, the external terminal can be a wearable terminal worn by the subject and can transmit the exercise amount and exercise period information measured by the wearable terminal to the server (20).

[0144] If the server (20) determines that the subject is exercising at a predetermined amount of exercise or more and within a predetermined cycle, the server (20) can determine a fourth heart rate and a fifth heart rate that are adjusted to be 5 to 10% lower than the second heart rate and the third heart rate.

[0145] The server (20) can determine a sixth heart rate by correcting the fourth heart rate based on the subject's medication information and weight information, and a seventh heart rate by correcting the fifth heart rate. For example, if the subject is taking a painkiller containing caffeine, the fourth and fifth heart rates can be corrected higher. In this case, the correction value may vary based on the amount of caffeine contained in the medication and weight information.

[0146] The above server (20) can determine that an emergency situation has occurred and generate a fifth alarm signal when the sixth heart rate and / or the seventh heart rate is outside a preset range.

[0147] When the above server (20) generates the first to fifth alarm signals, it can transmit the generated first to fifth alarm signals to the guardian terminal (30).

[0148] The guardian terminal (30) above is a terminal owned by a person protecting the subject. Preferably, if the subject is an elderly person living alone, the guardian terminal (30) may be a terminal owned or occupied by a family member caring for the elderly person living alone. Alternatively, the guardian terminal (30) may be a terminal owned or occupied by a person working at a nursing center, government agency, or medical facility caring for the subject.

[0149] The above description is merely an illustrative illustration of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate, rather than limit, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. A personalized alarm provision system using Doppler signal-based bio-signal and movement signal information acquisition device, server, and guardian terminal, A device for obtaining biosignal and movement signal information using the above Doppler signal A Doppler signal acquisition unit that emits a radar signal to a target, acquires a signal reflected from the radar signal to acquire a Doppler signal, and processes the Doppler signal to acquire a first phase Doppler signal and a second phase Doppler signal; A Doppler signal processing unit that processes the first phase Doppler signal and the second phase Doppler signal, respectively, to obtain first signal information and second signal information; and A personalized alarm provision system using Doppler signal-based bio-information and movement information, comprising a signal information output unit that obtains the first signal information and the second signal information, and analyzes the first signal information and the second signal information using a preset algorithm to obtain bio-signal information and movement signal information.

2. In paragraph 1, The above server is Based on the above movement signal information and bio-signal information, the time spent in each space of a household is statistically calculated to obtain lifestyle pattern information. A personalized alarm provision system characterized by setting living spaces and dangerous spaces based on the above lifestyle pattern information.

3. In paragraph 2, The above server is Based on the movement signal information transmitted from the biometric and movement signal information acquisition device installed in each space of a household, the time spent in each space is statistically calculated to obtain lifestyle pattern information. The space where the above subject stays the longest is set as the first living space. Designate the bathroom or toilet as the first risk area. The entrance is designated as the second risk area. A personalized alarm provision system characterized in that a space other than the first risk space and the second risk space, but in which the stay time is shorter than the first residence space, is set as a second residence space.

4. In paragraph 3, The above server is Based on the above lifestyle pattern information, if the time that the subject stays in the first risk space in the first time zone is n minutes, if the time that the subject stays in the first risk space in the first time zone has passed 5n minutes, a first alarm signal is generated. Based on the above lifestyle pattern information, if the time the subject stays in the second risk space is n minutes, if the time the subject stays in the second risk space exceeds 10n minutes, a second alarm signal is generated. A personalized alarm provision system characterized in that a third alarm signal is generated when the ratio of time that the subject stays in the first living space exceeds 8 times the ratio of time that the subject leaves the first living space.

5. In paragraph 4, The above server generates a fourth alarm signal when the activity level of the subject decreases during a preset time period. The above server is a personalized alarm provision system, characterized in that it determines that the activity has occurred based on the above movement signal information, when the movement speed of the subject in the above movement signal is greater than a preset value or the area of ​​the movement target is outside a preset range.

6. In paragraph 1, The above server is Based on the above movement signal information and bio-signal information, the maximum heart rate and respiration rate, minimum heart rate and respiration rate, and average heart rate and respiration rate in sleeping and non-sleeping states are statistically derived. Based on the maximum heart rate and respiratory rate, minimum heart rate and respiratory rate, and average heart rate and respiratory rate in the above statistically recorded sleeping and non-sleeping states, the normal range of the subject's heart rate and respiratory rate in the sleeping and non-sleeping states is determined, A personalized alarm provision system characterized by generating a fourth alarm signal when a heart rate and respiratory rate outside the normal range are derived in the above sleep or non-sleep state.

7. In paragraph 1, The above personalized alarm provision system further includes an external terminal that transmits the subject's exercise information, The above server receives the subject's age, gender, exercise information, medication information, and weight information from the guardian terminal, Determine the first heart rate range according to the subject's age in the above non-sleep state, Afterwards, if the subject is female, a second heart rate is determined that is corrected to be 5 to 10% higher than the first heart rate, and if the subject is male, a third heart rate is determined that is corrected to be 5 to 10% lower than the first heart rate. Thereafter, based on the exercise information received from the external terminal, if it is determined that the subject is exercising within a predetermined period of time and exceeding a predetermined amount of exercise, a fourth heart rate is determined by lowering the second heart rate by 5 to 10%, and a fifth heart rate is determined by lowering the third heart rate by 5 to 10%. Thereafter, based on the subject's medication information and weight information, the 6th heart rate is determined by correcting the 4th heart rate, and the 7th heart rate is determined by correcting the 5th heart rate. A personalized alarm system characterized in that when the sixth and seventh heart rates exceed a preset range, it is determined that an emergency has occurred and a fifth alarm signal is generated.

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