A personalized alarm system using biological and motion information based on Doppler signals

Abstract

The present invention is a personalized alarm providing system that uses biological information and motion information based on Doppler signals, and includes a biological signal and motion signal information acquisition device that uses Doppler signals, a server, and a parent / guardian terminal.

Description

[Technical Field]

[0001] The present invention relates to a personalized alarm providing system that notifies a user of a dangerous situation based on individual statistics on the basis of biological information and motion signal information acquired using Doppler signals. [Background technology]

[0002] In recent years, the population in need of care or attention has been increasing in Korean society. This population is defined as those who need assistance in emergencies or those without cohabitants, and includes, for example, the elderly, the disabled, and single-person households. Recent surveys have revealed that the elderly population exceeds 9 million, while the number of single-person households and registered disabled people exceeds 6.6 million and 2.6 million, respectively. Furthermore, the number of people who die alone, discovered after death without a cohabitant, has exceeded 20,000.

[0003] In addition, with the increase in personal devices and the growing demand for personal health management, various solutions or applications that collect personal health data and use the data to provide personalized health management content have emerged in recent years. To collect such personalized health data, wearable or stationary devices are used. When using wearable devices, health data is acquired close to the body, so preprocessing of measured data is often unnecessary. However, when using stationary devices, the user's physical activity information is measured from a distance, which increases the probability of noise being mixed into the measured data and makes it difficult to distinguish subtle differences.

[0004] In addition, existing danger notification services for elderly people living alone have the disadvantage of not being able to provide personalized danger notification services because they assume generalized danger situations rather than personalized ones. Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the above-mentioned problems of the conventional technology, one embodiment of the present invention provides a device for acquiring biosignal and motion signal information using Doppler signals, which emits a radar signal to a subject, analyzes a Doppler signal generated through a reflected wave acquired by reflecting the emitted radar signal, and can accurately acquire biosignal or motion signal information of the subject from the Doppler signal.

[0006] The present invention also provides a personalized alarm for a dangerous situation based on biological information and motion information derived using the biological signal and motion signal information acquisition device that utilizes the Doppler signal. [Means for solving the problem]

[0007] The personalized alarm providing system of the present invention may include a biological signal and motion signal information acquiring device using Doppler signals, a server, and a parent / guardian terminal.

[0008] The device for acquiring biological signal and motion signal information using Doppler signals may include a Doppler signal acquisition unit that emits a radar signal to a subject, acquires a signal that is reflected back 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 acquire first signal information and second signal information, and a signal information output unit that acquires the first signal information and the second signal information, and analyzes the first signal information and the second signal information, respectively, using a pre-set algorithm to acquire biological signal information and motion signal information.

[0009] The server can obtain lifestyle pattern information by statistically collating the time spent in each space of a household based on the motion signal information and biological signal information, and can set living spaces and dangerous spaces based on the lifestyle pattern information.

[0010] The server acquires lifestyle pattern information by statistically calculating the time spent in each space based on the action signal information received from the biosignal and action signal information acquisition devices installed in each space of the household, and sets the space where the subject stays the longest as the first living space, the toilet or bathroom as the first danger space, the entrance as the second danger space, and a space that is not the first danger space or the second danger space and where the subject stays for a shorter time than the first living space as the second living space.

[0011] Based on the lifestyle pattern information, if the time the subject stays in the first dangerous space during a first time period is n minutes, the server may generate a first alarm signal when the time the subject stays in the first dangerous space during the first time period has exceeded 5n minutes.

[0012] Based on the lifestyle pattern information, if the time the subject stays in the second dangerous space is n minutes, a second alarm signal may be generated when the time the subject stays in the second dangerous space has exceeded 10n minutes.

[0013] A third alarm signal may be generated if the percentage of time the subject spends in the first dwelling exceeds the percentage of time the subject spends out of the first dwelling by a factor of eight.

[0014] The server may generate a fourth alarm signal if the subject's activity level decreases during a predetermined period of time.

[0015] Based on the motion signal information, the server may determine that the amount of activity has occurred if the subject's movement speed from the motion signal is greater than or equal to a predetermined value, or if the motion target area is outside a predetermined range.

[0016] The server may statistically calculate the maximum heart rate and respiratory rate, the minimum heart rate and respiratory rate, and the average heart rate and respiratory rate in the sleeping state and the non-sleeping state based on the operation signal information and the biological signal information, determine normal ranges for the heart rate and respiratory rate in the sleeping state and the non-sleeping state based on the statistically calculated maximum heart rate and respiratory rate, the minimum heart rate and respiratory rate, and the average heart rate and respiratory rate in the sleeping state and the non-sleeping state, and generate a fourth alarm signal if it calculates a heart rate and respiratory rate outside the normal range in the sleeping state or the non-sleeping state.

[0017] The personalized alarm providing system may further include an external terminal that transmits exercise information of the subject.

[0018] The server receives the age, sex, exercise information, drug information, and weight information of the subject from the guardian terminal, determines a first heart rate range according to the age of the subject in the non-sleep state, then determines a second heart rate corrected to 5 to 10% higher than the first heart rate if the subject is female, and determines a third heart rate corrected to 5 to 10% lower than the first heart rate if the subject is male, and then determines a predetermined amount of exercise for the subject based on the exercise information received from the external terminal. If the above is met and it is determined that the subject is exercising within a predetermined cycle, a fourth heart rate is determined by correcting the second heart rate 5 to 10% lower, and a fifth heart rate is determined by correcting the third heart rate 5 to 10% lower.After that, a sixth heart rate is determined by correcting the fourth heart rate based on the subject's drug information and weight information, and a seventh heart rate is determined by correcting the fifth heart rate.If the sixth heart rate and the seventh heart rate fall outside the predetermined range, it is determined that an emergency has occurred and a fifth alarm signal is generated. [Effects of the Invention]

[0019] A personalized alarm providing system using biological information and motion information based on a Doppler signal according to an embodiment of the present invention emits a radar signal to a subject, analyzes a Doppler signal generated through a reflected wave obtained by reflecting the emitted radar signal, and has the effect of accurately obtaining biological signal or motion signal information of the subject from the Doppler signal.

[0020] The personalized alarm providing system of the present invention, which uses biological information and movement information based on Doppler signals, has the effect of differently determining individual risk situations based on statistically-collected life pattern information according to individual situations and notifying guardians of the risk situations. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a block diagram of a system for providing personalized alarms using biometric and motion information based on Doppler signals according to an embodiment of the present invention; [Figure 2] 1 is a block diagram of a device for acquiring biological and motion signal information using Doppler signals according to an embodiment of the present invention. [Figure 3] FIG. 3 is a block diagram of a Doppler signal acquisition unit in FIG. 2. [Figure 4] FIG. 3 is a block diagram of the Doppler signal processing unit of FIG. 2. [Figure 5] 1 is a flowchart of a method for acquiring biological and motion signal information using Doppler signals according to an embodiment of the present invention. [Figure 6] 6 is a flowchart of step S11 in FIG. 5. [Figure 7] 6 is a flowchart of step S13 in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0022] Some embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. When assigning reference numerals to components in each drawing, identical components may be assigned the same numerals whenever possible, even if they appear in different drawings. Furthermore, when describing the present embodiments, if a detailed description of related known structures or functions is deemed to obscure the gist of the present technical concept, such a detailed description may be omitted. When terms such as "comprise," "have," and "consist" are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, the plural may also be included unless otherwise expressly specified.

[0023] Furthermore, in describing components of the present disclosure, terms such as first, second, A, B, (a), (b), etc. are used merely to distinguish the component from other components, and are not intended to limit the nature, order, procedure, or number of the corresponding component.

[0024] In a description of the positional relationship of components, when two or more components are described as being "coupled," "coupled," or "connected," it should be understood that the two or more components may be directly "coupled," "coupled," or "connected," but that the two or more components may be "coupled," "coupled," or "connected" to another component through an "intervening" connection. Here, the other component may be included in one or more of the two or more components that are "coupled," "coupled," or "connected" to each other.

[0025] In describing temporal relationships relating to components, methods of operation, methods of production, etc., when the temporal or chronological order is described using terms such as "after," "following," "next," or "before," this may not necessarily be consecutive, unless "immediately" or "directly" is used.

[0026] On the other hand, when referring to numerical values ​​or corresponding information (e.g., levels, etc.) related to components, even if there is no explicit statement otherwise, 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 impacts, noise, etc.).

[0027] A personalized alarm provision system 100 using biological information and motion information based on Doppler signals according to one embodiment of the present invention may include a biological signal and motion signal information acquisition device 10 using Doppler signals, a server 20, and a parent terminal 30.

[0028] 1. Biosignal and motion signal information acquisition device 10 using Doppler signals 2 to 4 show an embodiment of a biosignal and motion signal information acquisition device 10 using Doppler signals according to the present invention. Fig. 2 is a block diagram of the biosignal and motion signal information acquisition device 10 using Doppler signals according to an embodiment of the present invention, Fig. 3 is a block diagram of the Doppler signal acquisition unit in Fig. 2, and Fig. 4 is a block diagram of the Doppler signal processing unit in Fig. 2.

[0029] The biosignal and motion signal information acquisition device 10 using Doppler signals may be installed in multiple locations within a household, preferably in a bedroom, living room, small room, toilet, entrance, etc.

[0030] Furthermore, the biosignal and motion signal information acquisition device 10 using Doppler signals can be installed on the ceiling to acquire biosignal and motion signal information over a wide area. In some cases, multiple biosignal and motion signal information acquisition devices 10 using Doppler signals can be installed in a single space. For example, the biosignal and motion signal information acquisition device 10 using Doppler signals can be installed on the ceiling and wall of a bathroom. Installing the device in this manner has the advantage of enabling more accurate fall detection.

[0031] The biological signal and motion signal information acquiring device using Doppler signals of the present invention will be described in detail below with reference to FIGS.

[0032] The biosignal and motion signal information acquisition device 10 using Doppler signals according to one embodiment of the present invention is configured to emit a radar signal to a subject, acquire a Doppler signal, and perform multiple filtering and amplification processes on the acquired Doppler signal to acquire the biosignal and motion signal. Therefore, the biosignal and motion signal information acquisition device 10 using Doppler signals according to one embodiment of the present invention can be configured to include a Doppler signal acquisition unit 11, a Doppler signal processing unit 12, and a signal information output unit 13, as shown in Figure 2.

[0033] The Doppler signal acquisition unit 11 is configured to emit a radar signal to a target, acquire a signal that is reflected back from 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.

[0034] In the case of radar signals, if there is motion of a subject, a Doppler signal is generated. The Doppler signal acquisition unit 11 of the present invention can be configured to use such Doppler radar characteristics to emit a radar signal to a subject and acquire a Doppler signal through the signal that is reflected back. Therefore, 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 shown in FIG. 3.

[0035] The radar signal emitting module 11A is configured to emit a radar signal toward a target, and the Doppler signal converting module 11B is configured to acquire the radar signal reflected back from the target to obtain a Doppler signal. In one embodiment of the present invention, a 24 GHz radar signal may be used to acquire the Doppler signal.

[0036] The Doppler signal separation module 11C is configured to perform processing on the Doppler signals obtained from the Doppler signal conversion module 11B to obtain a first phase Doppler signal and a second phase Doppler signal, where the first phase Doppler signal can be processed to have a phase difference of 90 degrees with the second phase Doppler signal.

[0037] After acquiring the first phase Doppler signal and the second phase Doppler signal from the Doppler signal acquisition unit 11, the Doppler signal processing unit 12 according to an 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, which can be acquired from the first phase Doppler signal and the second phase Doppler signal, respectively.

[0038] The first signal information and 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 second signal information obtained through the second phase Doppler signal can be defined as 2-1 signal information and 2-2 signal information.

[0039] Here, the 1-1 signal information may be heart rate information, and the 2-1 signal information may be respiratory rate information.

[0040] Also, the 1-2 signal may be the motion speed, and the 2-2 signal may be the area of ​​the motion target.

[0041] For this reason, the Doppler signal processing unit 12 of the present invention may be configured 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 shown 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, but the present invention is not limited to this and may also operate using N Doppler signal processing modules set by an administrator.

[0042] 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 processed signal and a second-first phase Doppler processed signal.

[0043] The first Doppler signal processing module 12A is configured to process the first phase Doppler signal and the second phase Doppler signal. In the present invention, one first Doppler signal processing module 12A processes the first and second phase Doppler signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 1-1 Doppler signal processing module that processes the first phase Doppler signal and a 1-2 Doppler signal processing module that processes the second phase Doppler signal may also be provided.

[0044] The first filtering performed in the first Doppler signal processing module 12A may be a process of performing a low-pass filter (LPF) by applying a filter of a frequency band set by an administrator. Also, the first amplification performed in the first Doppler signal processing module 12A may be a process of amplifying the input first and second phase Doppler signals by an amplification factor set by an administrator. An active filter may be used in the first Doppler signal processing module 12A according to an embodiment of the present invention. An active filter is a filter that performs amplification and filtering simultaneously using circuit characteristics.

[0045] After the first filtering and first amplification have been performed to generate the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, the generated 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal are sent via branch circuits to the second Doppler signal processing module 12B and the third Doppler signal processing module 12C. The second Doppler signal processing module 12B and the third Doppler signal processing module 12C are connected in parallel, and both the second Doppler signal processing module 12B and the third Doppler signal processing module 12C process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, but the two modules are configured to perform different processing.

[0046] More specifically, 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 may be connected to each other in a parallel structure.

[0047] 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 predetermined frequency or above a predetermined reference frequency, respectively. In one embodiment of the present invention, if the second Doppler signal processing module 12B is configured to process signals below a predetermined frequency, the third Doppler signal processing module 12C can be configured to process signals above a predetermined frequency. This simply means that different frequency bands are processed by 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 process opposite frequency bands.

[0048] Furthermore, 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, and therefore the second Doppler signal processing module 12B and the third Doppler signal processing module 12C may each be configured to have an additional Doppler signal processing module further connected thereto. A fourth Doppler signal processing module 12D, which will be described later in this invention, may be the aforementioned additional Doppler signal processing module.

[0049] The second Doppler signal processing module 12B is configured to perform second filtering and second amplification on the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal to obtain 1-1 signal information and 2-1 signal information.

[0050] The second Doppler signal processing module 12B is configured to process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal. In the present invention, one second Doppler signal processing module 12B processes the 1-1 and 2-1 phase Doppler processed signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 2-1 Doppler signal processing module that processes the 1-1 phase Doppler signal and a 2-2 Doppler signal processing module that processes the 2-1 phase Doppler signal may also be provided.

[0051] The second filtering performed by the second Doppler signal processing module 12B may be a process in which DC components are removed from the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, and a high-frequency pass filter (HPF) is performed by applying a filter of a frequency band set by the administrator.

[0052] 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 processed signal and 2-2 phase Doppler processed signal by an amplification factor set by an administrator. An active filter may be used in the second Doppler signal processing module 12B according to an embodiment of the present invention, and the active filter is a filter that performs amplification and filtering simultaneously using circuit characteristics.

[0053] The third Doppler signal processing module 12C is configured to acquire a 1-1 phase Doppler processed signal and a 2-1 phase Doppler processed signal, which are the same signals as those processed by the second Doppler signal processing module 12B, and to perform third filtering and third amplification on the acquired 1-1 phase Doppler processed signal and 2-1 phase Doppler processed signal to acquire 1-2 signal information and 2-2 signal information.

[0054] The third Doppler signal processing module 12C is configured to process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal. In the present invention, one third Doppler signal processing module 12C processes the 1-1 and 2-1 phase Doppler processed signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 3-1 Doppler signal processing module that processes the 1-1 phase Doppler signal and a 3-2 Doppler signal processing module that processes the 2-1 phase Doppler signal may also be provided.

[0055] The third filtering performed by the third Doppler signal processing module 12C may be a process of performing a low-pass filter (LPF) and a high-pass filter (HPF) by applying a filter of a frequency band range set by an administrator. Also, the third amplification performed by the third Doppler signal processing module 12C may be a process of amplifying the input 1-1 and 2-1 phase Doppler processed signals by an amplification factor set by an administrator. An active filter may be used in the third Doppler signal processing module 12C according to an embodiment of the present invention. An active filter is a filter that performs amplification and filtering simultaneously using circuit characteristics.

[0056] Meanwhile, in another embodiment of the present invention, as shown in FIG. 4, a fourth Doppler signal processing module 12D may be further included. The fourth Doppler signal processing module 12D may be configured to perform processing on the processing result of the second Doppler signal processing module 12C. In this case, when the fourth Doppler signal processing module 12D is present, 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. Furthermore, the signals output from the second Doppler signal processing module 12B may be 1-2 phase Doppler processed signals and 2-2 phase Doppler processed signals, rather than 1-1 signal information and 2-1 signal information.

[0057] Upon obtaining the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal from the second Doppler signal processing module 12B, the fourth Doppler signal processing module 12D is configured to perform fourth filtering and fourth amplification on the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal to obtain 1-1 signal information and 2-1 signal information.

[0058] The fourth Doppler signal processing module 12D is configured to process the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal. In the present invention, one fourth Doppler signal processing module 12D processes the 1-2 and 2-2 phase Doppler processed signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 4-1 Doppler signal processing module that processes the 1-2 phase Doppler signal and a 4-2 Doppler signal processing module that processes the 2-2 phase Doppler signal may be provided.

[0059] The fourth filtering performed by the fourth Doppler signal processing module 12D is a process of applying a low-pass filter (LPF) to the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal by applying a filter of a frequency band range set by the administrator, and the fourth amplification can be a process of amplifying the input 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal by an amplification factor already set by the administrator.

[0060] An active filter may be used in the fourth Doppler signal processing module 12D according to an embodiment of the present invention, and an active filter is a filter that uses circuit characteristics to perform amplification and filtering simultaneously.

[0061] Additionally, the fourth Doppler signal processing module 12D may be configured to apply an administrator-set DC offset voltage to the third filtered and second amplified signal.

[0062] In one embodiment of the present invention, the 1-1 signal information and the 2-1 signal information may be information including biological motion information, and the 1-2 signal information and the 2-2 signal information may be information including movement motion information.

[0063] Therefore, the signal information output unit 13 according to one embodiment of the present invention is configured to acquire first signal information and second signal information, and analyze the first signal information and second signal information, respectively, using a pre-set algorithm to acquire biological signal information and operational signal information.

[0064] The signal information output unit 13 of the present invention can acquire 1-1 signal information and 2-1 signal information as the first signal information, and can acquire 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.

[0065] The signal information output unit 13 may be configured to apply the acquired biological motion information and movement information to a pre-set algorithm to acquire and output biological signal information and movement signal information from the respective movement information. The biological signal information and movement signal information acquired from the signal information output unit 13 may be transmitted to the communication unit 14.

[0066] The communication unit 14 can transmit the biological signal information and the action signal information received from the signal information output unit 13 to the server 20 via wired communication or wireless communication.

[0067] 2. Method for acquiring biosignal and motion signal information using Doppler signals An embodiment of the method for acquiring biosignal and motion signal information using Doppler signals of the present invention is shown in Figures 5 to 7. Figure 5 is a flowchart of the method for acquiring biosignal and motion signal information using Doppler signals according to the embodiment of the present invention, Figure 6 is a flowchart of step S11 in Figure 5, and Figure 7 is a flowchart of step S13 in Figure 5.

[0068] The method for acquiring biosignal and motion signal information using Doppler signals of the present invention will be described in detail below with reference to Figures 5 to 7. For convenience of explanation, the following description will be made with reference to Figure 2, but the present invention is not limited to this, and various devices, systems, terminals, etc. that can perform similar functions or operations can also be used.

[0069] A method 10 for acquiring biological and motion signal information using Doppler signals according to an embodiment of the present invention is configured to emit a radar signal to a subject, acquire a Doppler signal, and perform multiple filtering and amplification processes on the acquired Doppler signal to acquire biological and motion signals. To this end, the method 10 for acquiring biological and motion signal information using Doppler signals according to an embodiment of the present invention can be configured to include a Doppler signal acquisition step S11, a Doppler signal processing step S13, and a signal information output step S15, as shown in Figure 5.

[0070] The Doppler signal acquisition step S11 is configured to emit a radar signal to a target using a Doppler signal acquisition unit, acquire a signal that is reflected back from 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.

[0071] In the case of radar signals, if there is motion of the subject, a Doppler signal is generated. The Doppler signal acquisition step S11 of the present invention can be configured to use such characteristics of Doppler radar to emit a radar signal to the subject and acquire the Doppler signal through the signal that is reflected back. To this end, the Doppler signal acquisition step S11 according to one embodiment of the present invention can include a radar signal emission step S111, a Doppler signal conversion step S113, and a Doppler signal separation step S115, as shown in FIG.

[0072] The radar signal emission step S111 is configured to emit a radar signal to the target, and the Doppler signal conversion step S113 is configured to acquire the radar signal reflected back from the target to obtain a Doppler signal. In one embodiment of the present invention, a 24 GHz radar signal may be used to acquire the Doppler signal.

[0073] The Doppler signal separation step S115 is configured to perform processing on the Doppler signals obtained from the Doppler signal conversion step S113 to obtain a first phase Doppler signal and a second phase Doppler signal, where the first phase Doppler signal can be processed to have a phase difference of 90 degrees with the second phase Doppler signal.

[0074] After 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 use a Doppler signal processing unit to process the first phase Doppler signal and the second phase Doppler signal, respectively, to obtain first signal information and second signal information, which can be obtained from the first phase Doppler signal and the second phase Doppler signal, respectively.

[0075] The first signal information and 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 second signal information obtained through the second phase Doppler signal can be defined as 2-1 signal information and 2-2 signal information.

[0076] For this reason, the Doppler signal processing step S13 of the present invention can be configured 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 shown in Fig. 7. For convenience of explanation, the Doppler signal processing step S13 of the present invention has been described below as using three or more Doppler signal processing steps, but the present invention is not limited to this and can also operate using N Doppler signal processing steps set by an administrator.

[0077] 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 1-1 phase Doppler processed signal and a 2-1 phase Doppler processed signal.

[0078] The first Doppler signal processing step S131 is configured to process the first phase Doppler signal and the second phase Doppler signal. In the present invention, one first Doppler signal processing step S131 is described to process the first and second phase Doppler signals, but the present invention is not necessarily limited to this. As shown in FIG. 7, a 1-1 Doppler signal processing module that processes the first phase Doppler signal and a 1-2 Doppler signal processing module that processes the second phase Doppler signal may be provided.

[0079] The first filtering performed in the first Doppler signal processing step S131 may be a process of performing a low-pass filter (LPF) by applying a filter of a frequency band set by an administrator. Also, the first amplification performed in the first Doppler signal processing step S131 may be a process of amplifying the input first and second phase Doppler signals by an amplification factor set by an administrator. In the first Doppler signal processing step S131 according to an embodiment of the present invention, the Doppler signal may be processed using an active filter, and here, the active filter may be a filter that performs amplification and filtering simultaneously using circuit characteristics.

[0080] After the first filtering and first amplification have been performed to generate the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, the generated 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal are sent via a branch circuit to a second Doppler signal processing step S133 and a third Doppler signal processing step S135. The second Doppler signal processing step S133 and the third Doppler signal processing step S135 are performed using a second Doppler signal processing module and a third Doppler signal processing module connected in parallel, and although the second Doppler signal processing step S133 and the third Doppler signal processing step S135 both process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, the two steps are configured to perform different processing.

[0081] More specifically, 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 may be connected to each other in a parallel structure.

[0082] 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 predetermined frequency or above a predetermined reference frequency, respectively. In one embodiment of the present invention, if the second Doppler signal processing module 12B is configured to process signals below a predetermined frequency, the third Doppler signal processing module 12C can be configured to process signals above a predetermined frequency. This simply means that different frequency bands are processed by 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 process opposite frequency bands.

[0083] Furthermore, 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, and therefore, the second Doppler signal processing module and the third Doppler signal processing module may each be configured to have an additional Doppler signal processing module further connected thereto. A fourth Doppler signal processing module, which will be described later in this invention, may be the aforementioned additional Doppler signal processing module.

[0084] The second Doppler signal processing step S133 is configured to perform second filtering and second amplification on the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal to obtain 1-1 signal information and 2-1 signal information.

[0085] The second Doppler signal processing step S133 is configured to process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal. In the present invention, one second Doppler signal processing step S133 processes the 1-1 and 2-1 phase Doppler processed signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 2-1 Doppler signal processing module that processes the 1-1 phase Doppler signal and a 2-2 Doppler signal processing module that processes the 2-1 phase Doppler signal may be provided.

[0086] The second filtering performed in the second Doppler signal processing step S133 may be a process in which DC components are removed from the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal, and a high frequency pass filter (HPF) is performed by applying a filter of a frequency band set by the administrator.

[0087] 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 processed signal and 2-2 phase Doppler processed signal by an amplification factor set by an administrator. In the second Doppler signal processing step S133 according to an embodiment of the present invention, an active filter may be used, and the active filter is a filter that performs amplification and filtering simultaneously using circuit characteristics.

[0088] The third Doppler signal processing step S135 is configured to acquire a 1-1 phase Doppler processed signal and a 2-1 phase Doppler processed signal, which are the same signals as the signals processed in the second Doppler signal processing step S133, and to perform third filtering and third amplification on the acquired 1-1 phase Doppler processed signal and 2-1 phase Doppler processed signal to acquire 1-2 signal information and 2-2 signal information.

[0089] The third Doppler signal processing step S135 is configured to process the 1-1 phase Doppler processed signal and the 2-1 phase Doppler processed signal. In the present invention, one third Doppler signal processing step S135 processes the 1-1 and 2-1 phase Doppler processed signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 3-1 Doppler signal processing module that processes the 1-1 phase Doppler signal and a 3-2 Doppler signal processing module that processes the 2-1 phase Doppler signal may be provided.

[0090] The third filtering performed in the third Doppler signal processing step S135 may be a process of performing a low-pass filter (LPF) and a high-pass filter (HPF) by applying a filter of a frequency band range set by an administrator. Also, the third amplification performed in the third Doppler signal processing step S135 may be a process of amplifying the input 1-1 and 2-1 phase Doppler processed signals by an amplification factor set by an administrator. An active filter may be used in 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 using circuit characteristics.

[0091] Meanwhile, in another embodiment of the present invention, as shown in Figure 7, a fourth Doppler signal processing step S137 may be further included. The fourth Doppler signal processing step S137 is configured to process the processing result of the second Doppler signal processing step S135. In this case, if the fourth Doppler signal processing step S137 is present, the first Doppler signal processing step S131, the second Doppler signal processing step S133, and the fourth Doppler signal processing step S137 may be serially connected. Furthermore, the signals output from the second Doppler signal processing step S133 may be a 1-2 phase Doppler processed signal and a 2-2 phase Doppler processed signal, rather than 1-1 signal information and 2-1 signal information.

[0092] When the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal are obtained from the second Doppler signal processing step S133, the fourth Doppler signal processing step S137 is configured to perform fourth filtering and fourth amplification on the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal to obtain 1-1 signal information and 2-1 signal information.

[0093] The fourth Doppler signal processing step S137 is configured to process the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal. In the present invention, one fourth Doppler signal processing step S137 processes the 1-2 and 2-2 phase Doppler processed signals. However, the present invention is not necessarily limited to this. As shown in FIG. 7, a 4-1 Doppler signal processing module that processes the 1-2 phase Doppler signal and a 4-2 Doppler signal processing module that processes the 2-2 phase Doppler signal may be provided.

[0094] The fourth filtering performed in the fourth Doppler signal processing step S137 is a process of applying a low-pass filter (LPF) to the 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal by applying a filter of a frequency band range set by the administrator, and the fourth amplification can be a process of amplifying the input 1-2 phase Doppler processed signal and the 2-2 phase Doppler processed signal by an amplification factor already set by the administrator.

[0095] In the fourth Doppler signal processing step S137 according to an embodiment of the present invention, an active filter can be used, which is a filter that performs amplification and filtering simultaneously using circuit characteristics.

[0096] Additionally, the fourth Doppler signal processing step S137 may be configured to apply an administrator-set DC offset voltage to the signal that has undergone the third filtering and second amplification.

[0097] In one embodiment of the present invention, the 1-1 signal information and the 2-1 signal information may be information including biological motion information, and the 1-2 signal information and the 2-2 signal information may be information including movement motion information.

[0098] Therefore, the signal information output step S15 according to one embodiment of the present invention is configured to acquire first signal information and second signal information using a signal information output unit, and analyze the first signal information and second signal information, respectively, using a pre-set algorithm to acquire biological signal information and operation signal information.

[0099] The signal information output step S15 of the present invention may acquire 1-1 signal information and 2-1 signal information as the first signal information, and may acquire 1-2 signal information and 2-2 signal information as the second signal information. That is, in the present invention, the first signal information may be defined as including biological motion information, and the second signal information may be defined as including movement motion information.

[0100] The signal information output step S15 may be configured to apply a pre-set algorithm to the acquired biological motion information and movement motion information, and acquire and output biological signal information and movement signal information from each motion information.

[0101] 3. Server 20 The server can receive the vital sign information and the motion sign information from the communication unit 14 .

[0102] The server 20 may extract the subject's heart rate information and respiration rate information from the received vital sign information.

[0103] The server 20 may also extract the subject's motion speed and the area of ​​the motion target from the motion signal information.

[0104] The Doppler signal-based biological / motion signal information acquisition device 10 may be installed in multiple locations within a household. Preferably, the Doppler signal-based biological / motion signal information acquisition device 10 may be installed in a bedroom, living room, small room, entrance hall, toilet, etc.

[0105] Here, the vital sign information may be heart rate and / or respiratory rate information.

[0106] The motion signal information may also be the subject's motion speed and / or the area of ​​the moving object.

[0107] The server 20 can acquire lifestyle pattern information by stating the time spent in each space based on the action signal information received from the biosignal and action signal information acquisition devices 10 installed in each space of a household. For example, the server 20 can receive action signal information from each of the biosignal and action signal information acquisition devices 10 installed in the bedroom, living room, small room, toilet, entrance, etc., and generate lifestyle pattern information by stating the time spent in each of the bedroom, living room, small room, toilet, and entrance based on the information.

[0108] The lifestyle pattern information thus generated varies depending on the lifestyle habits of each individual, and can be used as a basis for predicting emergencies.

[0109] Preferably, the server 20 can set a first living space, a second living space, a first dangerous space, and a second dangerous space based on the life pattern information.

[0110] The first living space is the space where the subject spends the most time and can be a bedroom or living room.

[0111] The second living space is a space that is not the first dangerous space or the second dangerous space and that is occupied for a shorter period of time than the first living space. For example, the second living space may be a small room.

[0112] The first dangerous space may be a toilet or bathroom, which is a space where people spend less time than the first living space, where statistically the most frequent falls occur, and which is difficult to grasp from the outside.

[0113] The second danger space is a place where people stay for a shorter period of time than the first living space and the first danger space, and where many falls occur, but it can be an entrance that is easy to see from the outside.

[0114] The server 20 may generate a first emergency signal or a second emergency signal when the time spent in the first dangerous space or the second dangerous space is longer than a predetermined range compared to the lifestyle pattern information. In this case, the set times for the first dangerous space and the second dangerous space may be different.

[0115] For example, if the life pattern information indicates that the subject stays in the first risk space for n minutes during a first time period, the server 20 may generate a first alarm signal when 5n minutes have passed. For example, if the subject stays in the toilet for an average of 5 minutes from 9:00 AM to 12:00 PM, the server 20 may generate a first alarm signal when the subject remains in the toilet after 25 minutes have passed. Furthermore, if the subject stays in the toilet for an average of 20 minutes from 5:00 PM to 8:00 PM, the server 20 may generate a first alarm signal when the subject remains in the toilet for 100 minutes.

[0116] Furthermore, the server 20 may generate a second alarm signal when the time spent in the second dangerous space is longer than a predetermined range compared to the lifestyle pattern information. For example, if the lifestyle pattern information indicates that the subject will stay in the second dangerous space for n minutes, the server 20 may generate a second alarm signal when 10n minutes have passed. For example, if the average time the subject stays in the entrance is 2 minutes, the server 20 may generate a second alarm signal when the subject remains in the entrance after 50 minutes have passed.

[0117] Furthermore, if the ratio of the time spent in the first living space to the time spent away from the first living space falls outside a preset range, a third alarm signal may be generated. For example, if the average ratio of the time spent in the first living space to the time spent away from the first living space is 7:3 in the lifestyle pattern information and the ratio of the time spent in the first living space falls outside the preset range of 8 (for example, if the ratio of the time spent in the first living space to the time spent away from the first living space is 8.2:1.8), a third alarm signal may be generated.

[0118] The server 20 may generate a fourth alarm signal when the subject's activity level continuously decreases during a preset time period. For example, if the subject's average activity level between 9:00 and 17:00 is 80 based on the lifestyle pattern information, the server 20 may generate a fourth alarm signal when the subject's average activity level continuously decreases to 60, 50, and 30 during the same time period.

[0119] The amount of activity is determined based on the motion signal information by determining whether an amount of activity has occurred when the subject's movement speed in the motion signal is equal to or greater than a predetermined value, or whether an amount of activity has occurred when the motion target area in the motion signal is outside a predetermined range.

[0120] The server 20 may determine whether the subject is asleep or not asleep based on the received vital sign information and motion sign information.

[0121] The server 20 determines that the subject is not asleep if the subject's movement speed is above a predetermined range, the movement target area is above a predetermined range, and the time during which the heart rate in the vital sign information is above a predetermined range is above a predetermined range.

[0122] The server 20 may statistically calculate the maximum heart rate and / or respiration rate, the minimum heart rate and / or respiration rate, and the average heart rate and / or respiration rate in a non-sleep state based on the biological signal information.

[0123] Furthermore, the server 20 may statistically calculate the maximum heart rate and / or respiration rate, the minimum heart rate and / or respiration rate, and the average heart rate and / or respiration rate in the sleeping state based on the biological signal.

[0124] The server 20 may determine the normal range of heart rate and / or respiratory rate for each subject (individual) in a sleeping state and a non-sleeping state based on the statistical data. As described above, the normal range of health conditions may be different for a sleeping state and a non-sleeping state.

[0125] If the server 20 calculates a heart rate and / or respiratory rate outside the normal range in a sleeping or non-sleeping state, it may determine that the subject is in an emergency and generate a fourth alarm signal.

[0126] The server 20 can receive the subject's age, sex, exercise information, medication information, and weight information from the parent / guardian terminal 30 .

[0127] First, the server 20 determines a first heart rate range according to the age of the subject in a non-sleep state. Here, the first heart rate range is known in advance and means a heart rate range according to the age of the subject.

[0128] Thereafter, the server 20 determines a second heart rate corrected to be 5 to 10% higher than the first heart rate if the received gender information is female, and determines a third heart rate corrected to be 5 to 10% lower than the first heart rate if the received gender information is male.

[0129] The server 20 can then determine the subject's heart rate based on the exercise information received from the external terminal. The external terminal may be a terminal at an exercise facility such as a health club, and may transmit the subject's exercise amount and exercise period information to the server 20. Alternatively, the external terminal may be a wearable terminal worn by the subject, and may transmit the exercise amount and exercise period information measured by the wearable terminal to the server 20.

[0130] If the server 20 determines that the subject is exercising at a level greater than a predetermined level and within a predetermined cycle, it may determine a fourth heart rate and a fifth heart rate that are 5 to 10% lower than the second heart rate and the third heart rate.

[0131] The server 20 may determine a sixth heart rate by correcting the fourth heart rate and a seventh heart rate by correcting the fifth heart rate based on the subject's medication information and weight information. For example, if the subject takes a painkiller containing caffeine, the fourth heart rate and the fifth heart rate may be corrected higher. In this case, the correction values ​​may vary based on the amount of caffeine contained in the medication and weight information.

[0132] If the sixth heart rate and / or the seventh heart rate fall outside a preset range, the server 20 may determine that an emergency has occurred and generate a fifth alarm signal.

[0133] When the server 20 generates the first to fifth alarm signals, the server 20 can transmit the generated first to fifth alarm signals to the parent terminal 30.

[0134] The guardian terminal 30 is a terminal owned by a person who is caring for the subject, and preferably, when the subject is an elderly person living alone, the guardian terminal 30 may be a terminal owned or owned by a family member who takes care of the elderly person living alone. Alternatively, the guardian terminal 30 may be a terminal owned or owned by a person working at a nursing center, a national agency, or a medical facility that takes care of the subject.

[0135] The above description merely exemplifies the technical concept of the present invention, and various modifications and variations may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are for illustrative purposes only, and are not intended to limit the technical concept of the present invention. The scope of the present invention should be interpreted by the following claims, and all technical concepts within the scope of the claims should be interpreted as being within the scope of the present invention.

Claims

1. A personalized alarm providing system using biological information and motion information based on Doppler signals, including a biological signal and motion signal information acquisition device using Doppler signals, a server, and a parent / guardian terminal, The biosignal and motion signal information acquisition device using the Doppler signal comprises: a Doppler signal acquisition unit that emits a radar signal to a target, acquires a signal that is reflected back 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 to obtain first signal information and second signal information, respectively; a signal information output unit that acquires 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 acquire biological signal information and action signal information, respectively; A personalized alarm providing system utilizing vital signs and motion information based on Doppler signals, including:

2. The server Based on the motion signal information and the biological signal information, the time spent in each space of the household is statistically calculated to obtain lifestyle pattern information; 2. The personalized alarm providing system according to claim 1, wherein a living space and a dangerous space are set based on the life pattern information.

3. The server Based on the movement signal information received from the biosignal and movement signal information acquisition devices installed in each space of the household, the time spent in each space is statistically calculated to acquire lifestyle pattern information; The space where the subject stays the longest is set as a first living space; The toilet or bathroom is set as the first hazardous space, The entrance is set as the second dangerous space, 3. The personalized alarm providing system according to claim 2, wherein a space that is not one of the first and second dangerous spaces and that is occupied for a shorter period of time than the first living space is set as the second living space.

4. The server generating a first alarm signal when the time that the subject stays in the first dangerous space during the first time period has exceeded 5n minutes, in a case where the time that the subject stays in the first dangerous space during the first time period is n minutes based on the lifestyle pattern information; generating a second alarm signal when the time the subject stays in the second dangerous space has exceeded 10n minutes, in a case where the time the subject stays in the second dangerous space is n minutes based on the lifestyle pattern information; 4. The personalized alarm delivery system of claim 3, wherein a third alarm signal is generated when the percentage of time the subject spends in the first living space exceeds the percentage of time the subject leaves the first living space by eight times.

5. The server generates a fourth alarm signal when the activity amount of the subject decreases during a predetermined time period, 5. The personalized alarm providing system of claim 4, wherein the server determines that the activity amount has occurred when, based on the motion signal information, the subject's movement speed in the motion signal is equal to or greater than a predetermined value, or when the motion target area is outside a predetermined range.

6. The server Based on the motion signal information and the biological signal information, the maximum heart rate and respiratory rate, the minimum heart rate and respiratory rate, and the average heart rate and respiratory rate in the sleeping state and the non-sleeping state are statistically calculated; determining normal ranges of the subject's heart rate and respiration rate in the sleep state and the non-sleep state based on the statistically collected maximum heart rate and respiration rate, minimum heart rate and respiration rate, and average heart rate and respiration rate in the sleep state and the non-sleep state; 2. The personalized alarm system of claim 1, wherein a fourth alarm signal is generated when the calculated heart rate and respiratory rate are outside of normal ranges in the sleep state or non-sleep state.

7. The personalized alarm providing system further includes an external terminal that transmits exercise information of the subject; The server receives the subject's age, sex, exercise information, medication information, and weight information from the parent / guardian terminal; determining a first heart rate range according to the subject's age in the non-sleep state; Then, if the subject is female, a second heart rate corrected to be 5 to 10% higher than the first heart rate is determined, and if the subject is male, a third heart rate corrected to be 5 to 10% lower than the first heart rate is determined; Thereafter, when it is determined based on the exercise information received from the external terminal that the subject is exercising at a predetermined exercise amount or more and within a predetermined cycle, a fourth heart rate is determined by correcting the second heart rate 5 to 10% lower, and a fifth heart rate is determined by correcting the third heart rate 5 to 10% lower, Then, a sixth heart rate is determined by correcting the fourth heart rate based on medication information and weight information of the subject, and a seventh heart rate is determined by correcting the fifth heart rate, 2. The personalized alarm providing system of claim 1, wherein, when the sixth heart rate and the seventh heart rate are outside a predetermined range, it is determined that an emergency has occurred and a fifth alarm signal is generated.

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