Fall prevention system in home using smart band

Abstract

A fall prevention system in a home using a smart band according to one embodiment comprises: a smart band (100) including a sensor unit (130); a bed sheet (510) including a flat portion and a linear portion on a bed frame; a bed state storage unit (530) storing information about the linear angle of the linear portion; and a server (300) linked with the smart band (100) and the smart bed (500), wherein the server (300) determines whether a fall has occurred based on sleep information provided from the sensor unit (130) and information about the linear angle provided from the bed state storage unit (530).

Description

Technology Field

[0001] This specification relates to a fall prevention system for the home using a smart band. Background Technology

[0002] Generally, for children hospitalized in hospitals, guardians use various specific devices at regular intervals to monitor the child's condition by checking body temperature, blood pressure, heart rate, etc., depending on the child.

[0003] At this time, the child is managed by having a nurse input the checked biometric information into the computer system, allowing for the monitoring of the child's real-time status while simultaneously storing the biometric data for future use.

[0004] However, this conventional method involved a nurse moving between wards with multiple pieces of equipment at designated intervals to individually check the condition of each child. This had the problem of being difficult to transport and requiring a significant amount of time because real-time vital signs, such as body temperature, blood pressure, and heart rate, had to be monitored individually for each child.

[0005] In addition, because biometric data is measured at fixed intervals, guardians are unable to quickly identify emergencies when a child's condition changes rapidly due to symptoms or environmental factors, frequently resulting in missed opportunities for timely treatment.

[0006] In particular, for children who are able to move, there was a problem where they were neglected and could die if their condition changed suddenly while moving or if they fell from their bed, as they could lose consciousness due to external impact and be unable to call for help from their guardians. The problem to be solved

[0007] The problem that this specification aims to solve is to provide a fall prevention system for the home using a smart band that can accurately and quickly determine whether a fall has occurred.

[0008] The problems described in this specification are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0009] To solve the above problem, a fall prevention system in a home using a smart band according to one embodiment comprises: a smart band (100) including a sensor unit (130); a bed sheet (510) including a flat portion and a linear portion on a bed frame; a bed state storage unit (530) storing information about the linear angle of the linear portion; and a server (300) linked with the smart band (100) and the smart bed (500), wherein the server (300) determines whether a fall has occurred based on sleep information provided from the sensor unit (130) and information about the linear angle provided from the bed state storage unit (530).

[0010] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0011] According to the present specification, the presence or absence of a fall can be determined accurately and quickly.

[0012] The effects according to the embodiments are not limited to those exemplified above, and a wider variety of effects are included in this specification. Brief explanation of the drawing

[0013] FIG. 1 is a configuration diagram of a fall prevention system at home using a smart band according to one embodiment. FIG. 2 is a configuration diagram showing the internal configuration of a smart band according to one embodiment. Figure 3 is a block diagram showing the configurations of a smart band according to Figure 1. Figure 4 is a block diagram showing the configurations of a smart bed according to Figure 1. FIG. 5 is a block diagram showing the configurations of the management device according to FIG. 1. Figure 6 is a block diagram showing the process of determining a fall of a smart band, smart bed, and management device according to Figure 1. Specific details for implementing the invention

[0014] A preferred embodiment of the present invention is described in detail with reference to the attached drawings as follows.

[0015] Furthermore, while the terms used in this invention have been selected to be as widely used as possible, there are also terms arbitrarily chosen by the applicant in specific cases. Since the meanings of these terms are described in detail in the relevant description of the invention, it should be noted that the invention should be understood based on the meaning of the terms rather than their mere names. Additionally, in describing the embodiments, explanations regarding technical content that is well known in the technical field to which this invention belongs and is not directly related to this invention are omitted. This is intended to convey the essence of the invention more clearly without obscuring it by omitting unnecessary explanations.

[0016] Specific embodiments will be described below with reference to the attached drawings.

[0017] FIG. 1 is a configuration diagram of a fall prevention system in a home using a smart band according to one embodiment. FIG. 2 is a configuration diagram showing the internal configuration of a smart band according to one embodiment. FIG. 3 is a block diagram showing the configurations of the smart band according to FIG. 1.

[0018] Referring to FIGS. 1 to 3, a fall prevention system in a home using a smart band according to the present invention is characterized by comprising a smart band (100), a smart bed (500), a gateway (200) formed to transmit data by wirelessly transmitting and receiving signals with the smart band (100) and the smart bed (500), a server (300) formed to be connected to the gateway (200) to collect biosignals and activity information transmitted from the smart band (100) and to collect bed status transmitted from the smart bed (500), and a management device (400) formed to be linked with the server (300) to monitor the biosignals and activity information of a child stored in the server (300) in real time.

[0019] Additionally, the server (300) is characterized by comprising a data storage unit (310) that collects and stores data measured from the smart band (100), a data processing unit (320) that determines one or more of a health condition, a fall condition, or an area deviation condition based on the data collected from the smart band (100), and a signal transmission unit (330) that transmits a signal to the management device (400) to generate an alarm (or warning signal) according to the information determined by the data processing unit (320).

[0020] The smart band (100) is designed to be worn on a child's wrist to measure biosignals generated by the child in real time and to determine the child's movement location and fall status.

[0021] At this time, the smart band (100) is formed so that one can be worn per child, and multiple smart bands (100) can transmit data to a gateway (200) using wireless communication, and the gateway (200) transmits the transmitted data to a server (300).

[0022] A number of gateways (200) are distributed and arranged inside the building, and can transmit and receive data by communicating with the smart band (100) at low power via wireless communication, and can also transmit control signals or alarm signals transmitted from the server (300) or management device (400) to the smart band (100) as needed.

[0023] Here, the wireless communication network of the smart band (100) can use a wireless access network based on IEE802.15.4e / g, which is a low-power access network, and the gateway (200) transmits and receives data by configuring a star topology or a mesh network.

[0024] In addition, the gateway (200) can build a database on the server (300) using the collected information through a standard IoT (Internet of Things) protocol.

[0025] The server (300) stores biosignals and activity information measured from the smart band (100) and is used by the child's guardian to monitor the measured data or manage the child's status.

[0026] The server (300) is composed of a data storage unit (310), a data processing unit (320), and a signal transmission unit (330). The data storage unit (310) is used to build a database for each child by storing data measured and transmitted from multiple smart bands (100) separately for each child.

[0027] The data processing unit (320) is used to determine the health status, fall status, and zone deviation status set for each child based on data transmitted from the smart band (100), and to determine the normal, abnormal, activity, sleep, and tension status.

[0028] Here, the health and fall status settings configured for each child allow for different numerical values ​​to be determined based on the child's illness, disease, or health condition, and in the case of zone deviation, zones can be designated to restrict movement to within the path used for medical treatment, rehabilitation, exercise, visits, and daily activities.

[0029] In addition, the sleep and activity states may be pre-set and stored by the child's bedtime, mealtime, exercise, or rehabilitation time, or the smart band (100) may estimate what actions it performs at specific times based on biosignals measured at each time period.

[0030] For more accurate measurement, it is desirable to allow the user to record what actions were performed at each time the biometric information measured while wearing the smart band (100) for the first time changes, and to check when similar actions were performed based on the information initially entered.

[0031] The signal transmission unit (330) is used to transmit an alarm to the child's guardian (or guardian's management device (400) linked to the server (300) when any one of the child's health condition, fall condition, zone departure condition, activity condition, muscle tension condition, or stress condition is determined to be abnormal through the data processing unit (320), so that the child's guardian can quickly move to the child and check the child's condition.

[0032] The child's biosignals and activity information measured through the smart band (100) are stored as a database in the server (300) via the gateway (200), and the server (300) can be checked through a management device (400) used by the child's guardian with the help of a web method or other frameworks.

[0033] Additionally, the management device (400) is used to remotely monitor the child's condition and can access the server (300) using a management PC (410) used by the child's guardian or a mobile terminal (420) that the child's guardian can carry.

[0034] Through the management device (400), the status of a child stored in the data storage unit (310) of the server (300) can be monitored in real time, and if a specific child is determined to be in an abnormal state, emergency information can be alerted to the child's guardian through the app or program of the management device (400) as an alarm signal from the server (300).

[0035] The child's biosignals and activity information measured through the smart band (100) are stored as a database in the server (300) via the gateway (200), and the server (300) can be checked through a management device (400) used by the child's guardian with the help of a web method or other frameworks.

[0036] In addition, the device is characterized by comprising a housing (110) having a band (120) formed thereon so as to be closely attached to a child's wrist, a sensor unit (130) formed on the back surface of the housing (110) capable of measuring one or more of the child's health condition, fall condition, zone departure condition, activity condition, muscle tension condition, and stress condition, a first notification unit (140) that outputs a warning signal, a communication unit formed to transmit information measured through the sensor unit (130) to the outside or receive data from the outside and receive a warning signal from a management device (400), and a control unit that controls the operation of the sensor unit (130), the first notification unit (140), and the communication unit.

[0037] The housing (110) is hollow inside and is provided so that a sensor unit (130), a communication unit, and a control unit can be built inside, and the sensor unit (130) is positioned on the back of the housing (110) and formed to come into contact with a child's wrist to measure biometric information.

[0038] In addition, the housing (110) is provided with a band (120) so that the band (120) wraps around and secures the child's wrist, thereby allowing the housing (110) to be maintained in close contact with the child's wrist. It is preferable to use a silicone-based synthetic resin material for the housing (110) so that it does not cause adverse effects on the skin and can be closely fitted to the wrist.

[0039] The sensor unit (130) is used to detect the child's health condition, fall condition, zone departure condition, activity condition, muscle tension condition, and stress condition, and measures basic data to determine the child's condition.

[0040] At this time, it is preferable that the sensor part (130) be formed to protrude from the back surface of the housing (110) by means of elastic force so that it can be maintained in contact with the surface of the child's wrist.

[0041] The sensor unit (130) further includes a biosignal sensor formed to measure one or more of the child's electromyogram, electrocardiogram, blood flow, blood pressure, pulse, pulse wave, heart rate, oxygen saturation, and body temperature, and the child's health condition can be continuously measured through the biosignal sensor.

[0042] Additionally, the biosignal sensor can measure and transmit signals in real time, and to reduce battery power consumption, it is desirable to have a long time interval for transmitting to the server (300) when the measured signal is within the normal state range, and to transmit the signal in real time regardless of the set transmission time interval when the measured signal is in an abnormal state.

[0043] At this time, the biosignal sensor can determine the sleep state and activity state based on bio-information measured from the child, and by linking with the IMU sensor described later, it can also determine the type of exercise when the child exercises.

[0044] Additionally, the sensor unit (130) further includes a biosignal sensor that measures and collects the child's biometric information, an IMU (Inertial Measurement Unit) sensor for collecting the child's movement and activity information, and a positioning sensor that measures the distance from the child's wrist to the ground. It can detect a primary fall state by using the speed and altitude of the child's wrist descending through the IMU sensor and the positioning sensor, and can provide data regarding the primary fall state to the fall judgment unit (325) of the server (300) to be described later. The fall judgment unit (325) may include a primary judgment unit (325a) and a secondary judgment unit (325b).

[0045] The IMU sensor measures a child's speed, direction, gravity, and acceleration, and utilizes an accelerometer, angular velocity sensor, geomagnetic sensor, and altimeter to recognize the child's movement situation.

[0046] The positioning sensor measures the altitude of the location while the smart band (100) is worn, and can be used as an auxiliary means to determine the fall condition by measuring the distance from the ground to the wrist using the change in the position of the wrist.

[0047] That is, the movement and acceleration of the wrist wearing the smart band (100) can be measured through the IMU sensor, and the height of the wrist can be estimated through the positioning sensor to determine the child's primary fall state.

[0048] At this time, it is desirable for the control unit to detect a rapid vertical fall toward the ground through the IMU sensor, and for the positioning sensor to detect a rapid change in altitude based on the recorded altitude of the child's normal living state and posture, thereby reducing fall detection errors.

[0049] The positioning sensor measures the vertical distance from the child's wrist to the ground using a laser or ultrasound, and is configured so that the measurement direction changes based on the direction of gravity of the IMU sensor.

[0050] In addition, it is desirable for the positioning sensor to be directed toward the ground from the side of the housing to prevent the back of the hand from being measured when measuring altitude, and the measured angle of illumination may vary from 0 to 45 degrees based on 90 degrees, which is a vertical state.

[0051] When the beam angle changes, the ground can be measured even when the wrist is moved, and the beam can be measured by aligning the direction of gravity with the IMU sensor, making it possible to measure in various environments.

[0052] Additionally, the sensor unit (130) of the smart band (100) further includes a GPS capable of determining the location of the child, and the server (300) is characterized by detecting when the child leaves the hospital or leaves a specific space and area within the hospital and sending an alarm to the management device (400).

[0053] The GPS is used to determine the location of the child and transmits the child's location information to the server (300) so that the child's guardian can quickly check the child's location in the event of an emergency caused by the worsening of a disease or a fall.

[0054] In addition, the location information of the child measured via GPS is transmitted to the server (300), and the server (300) is able to determine whether the child is located within or outside the area (home, kindergarten, or school) set for each child.

[0055] At this time, if the child leaves the designated area or leaves the hospital, the server (300) transmits the child's location and alarm to the management device (400), so that the child's guardian can manage the child who has left the area.

[0056] The communication unit is for transmitting event information based on real-time measured information or collected data from the sensor unit (130), and utilizes a technology that uses a Sub-GHz band IoT network to extend the transmission distance to several km with low power.

[0057] In addition, since an RF module is formed in the communication unit to identify each smart band (100), it is desirable to classify and store the data by child when transmitting the data measured from the smart band (100) to the server (300).

[0058] Additionally, the communication unit of the smart band (100) further includes an NFC module for storing one or more of the child's personal information, disease information, medical treatment information, prescription information, hospitalization information, and management information, and the child's guardian is characterized by tagging the prescribed drug to the NFC module before administering the drug to cross-verify whether the drug being administered to the child is correct.

[0059] The control unit has a PCB board formed thereon so that it can be electrically connected to the sensor unit (130), the first notification unit (140), and the communication unit embedded in the smart band (100), and controls the power by supplying power to the sensor unit (130), the first notification unit (140), and the communication unit through a battery.

[0060] Additionally, the server (300) is characterized by sending an alarm through the management device (400) when it is determined that the band (120) is damaged or detached from the wrist, and that the smart band (100) has not moved for a certain period of time or is not in a wearing state.

[0061] The band (120) is formed in the shape of an elastic ring, but can also be configured in the shape of a watch strap, and in the present invention, the band (120) is formed so that it can be replaced.

[0062] In addition, if the child removes the band (120), there is no data measured by the sensor unit (130), and the server (300) determines that the child is not wearing the band if there is no movement or no data measured by the data transmitted from the smart band (100), and can take measures to allow the child's guardian to check the child's condition through the management device (400).

[0063] FIG. 4 is a block diagram showing the configurations of a smart bed according to FIG. 1. FIG. 5 is a block diagram showing the configurations of a management device according to FIG. 1.

[0064] Referring to FIG. 4, the smart bed (500) may include a bed sheet (510), an armrest (520), a bed state storage unit (530), a communication unit, and a control unit. The bed sheet (510) provides an area where a child of the smart bed (500) can lie down and sit, and may include a flat section where the child's buttocks and legs are placed, and a linear section where the child's waist and head are placed. The flat section and the linear section are physically connected, and the angle of the linear section can be adjusted by the control unit. The bed sheet (510) may be placed on a bed frame.

[0065] Armrests (520) can be placed on both sides of the bed sheet (510) and can be physically connected to the bed frame so that the child can rest their arms on them and prevent the child from falling while moving sideways during sleep or activity time.

[0066] The bed state storage unit (530) can measure and store information regarding the linear angle (or tilted angle) of the linear unit, connection information between the armrest (520) and the bed frame, or height information of the armrest (520) in real time. The bed state storage unit (530) can provide information regarding the linear angle (or tilted angle) of the linear unit, connection information between the armrest (520) and the bed frame, or height information of the armrest (520) to the secondary judgment unit (325b) through the communication unit.

[0067] Referring to FIG. 5, the data processing unit (320) may include a sleep information learning unit (321) and a fall detection unit (325). The sleep information learning unit (321) can learn the child's sleep information based on the sleep information stored based on the sleep sensing unit (130) of the child's sensor unit (130).

[0068] The fall detection unit (325) may include a first detection unit (325a) and a second detection unit (325b), as shown in FIG. 6. The sleep information learning unit (321) and the fall detection unit (325) will be described in more detail with reference to FIG. 6.

[0069] Figure 6 is a block diagram showing the process of determining a fall of a smart band, smart bed, and management device according to Figure 1.

[0070] Referring to FIGS. 1 to 6, the sensor unit (130) may include a sleep sensing unit (130) and a fall sensing unit (130). The sleep sensing unit (130) and the fall sensing unit (130) may each be a sensor that senses the child's sleep information and a sensor that detects the child's fall among the exemplified sensors of the sensor unit (130). For example, the sleep sensing unit (130) may include a biosignal sensor of the sensor unit (130), and the fall sensing unit (130) may include an IMU (Inertial Measurement Unit) sensor of the sensor unit (130) and a positioning sensor that measures the distance from the child's wrist to the ground.

[0071] The sleep sensing unit (130) can sense the child's sleep state in real time and provide information about the sensed sleep state (hereinafter referred to as sleep information) to the data storage unit (310). The sleep information includes information about whether the child is in a sleep state and can be sensed from the sleep sensing unit (130). The data storage unit (310) can provide the sleep information to the sleep information learning unit (321). The sleep information learning unit (321) can learn the child's sleep information based on the sleep information. For example, the learned sleep information can be provided to the secondary judgment unit (325b). The learned sleep information may include information about the child's sleep time. The information about the child's sleep time may include, for example, information that the child's sleep time is between 10 PM and 6 AM, the child's sleep time is between 9 PM and 7 AM, or that the remaining time is not sleep time. The sleep information learning unit (321) can learn and update information about the child's sleep time in real time based on the sleep information provided in real time from the sleep sensing unit (130).

[0072] The fall sensing unit (130) may include an IMU sensor and a positioning sensor. The fall sensing unit (130) can detect a primary fall state using the speed and altitude at which the child's wrist descends. For example, if the fall sensing unit (130) determines that the speed at which the child's wrist descends is greater than or equal to a first threshold (A) and the altitude of the child's wrist is less than or equal to a second threshold (B), it may provide the primary judgment unit (325a) with information regarding the speed at which the wrist descends that is greater than or equal to the first threshold (A) and information regarding the altitude of the wrist that is less than or equal to the second threshold (B). The first judgment unit (325a) can provide the first judgment information to the second judgment unit (325b) based on the information regarding the speed at which the wrist descends above the first threshold value (A) and the information regarding the height of the wrist below the second threshold value (B) (information regarding the first fall state detection) provided by the fall sensing unit (130), and after verifying that the speed at which the wrist descends above the first threshold value (A) and the height of the wrist below the second threshold value (B) are verified, if it is verified that the speed at which the wrist descends above the first threshold value (A) and the height of the wrist below the second threshold value (B) are verified.

[0073] The first judgment unit (325a) may not generate first judgment information and may not provide first judgment information to the second judgment unit (325b) based on information regarding the speed at which the wrist descends above a first threshold (A) and information regarding the height of the wrist below a second threshold (B) (information regarding first fall state detection) received from the fall sensing unit (130).

[0074] The second judgment unit (325b) can make a second judgment on a child's fall based on information about the child's sleep time received from the sleep information learning unit (321), first judgment information received from the first judgment unit (325a), information about the linear angle (or tilted angle) of the linear unit received from the bed state storage unit (530), and information on the connection between the armrest (520) and the bed frame, or height information of the armrest (520).

[0075] When the second judgment unit (325b) receives first judgment information from the first judgment unit (325a), it starts a second judgment. After starting the second judgment, the second judgment unit (325b) can make a second judgment based on information about the child's sleep time received from the sleep information learning unit (321), information about the linear angle (or tilted angle) of the linear unit received from the bed state storage unit (530), connection information between the armrest (520) and the bed frame, or height information of the armrest (520). The second judgment unit (325b) can compare the information about the child's sleep time with the time when the first judgment information was received. If the time at which the first judgment information is received is determined to be within the child's sleep time (e.g., the child's sleep time is from 9 PM to 6 AM and the time at which the first judgment information is received is 2 AM), then, based on the information regarding the linear angle (or tilted angle) of the linear part, it is determined whether the linear angle is an angle less than or equal to the third reference value (C).

[0076] The linear angle refers to the angle between the linear part and the flat part, and may have a range of 0 to 90 degrees. The third reference value (C) may vary depending on the child. The child may store the linear angle they set when sleeping in the bed state storage unit (530). For example, if a child sleeps at a linear angle of 45 degrees or less, the third reference value (C) for that child may be 45 degrees. Information regarding the third reference value (C) stored in the bed state storage unit (530) is provided to the secondary judgment unit (325b) along with information regarding the linear angle (or tilted angle). According to one embodiment, by additionally determining whether the linear angle, which is a sleeping condition within the child's normal sleeping time, is an angle less than or equal to the third reference value (C), reliable results regarding whether a fall has occurred can be provided.

[0077] When the second judgment unit (325b) determines that the linear angle is at the third reference value (C) at the time the first judgment information is received, it determines whether the armrest (520) and the bed frame are connected based on the connection information between the armrest (520) and the bed frame and the height information of the armrest (520), and whether the height of the armrest (520) is less than or equal to the fourth reference value (D).

[0078] The reason for determining whether the armrest (520) and the bed frame are connected is that when the armrest (520) and the bed frame are not connected, the possibility of falling is very high, whereas when they are connected, the possibility of falling is very low.

[0079] Additionally, the reason for determining whether the height of the armrest (520) is below the fourth reference value (D) is that there is a possibility of falling even when the height of the armrest (520) is below the fourth reference value (D), whereas the possibility of falling is reduced when the height of the armrest (520) is above the fourth reference value (D). In this specification, the fourth reference value (D) may be, for example, about 30 cm, but is not limited thereto.

[0080] If at least one of whether the armrest (520) and the bed frame are connected, and whether the height of the armrest (520) is less than or equal to the fourth reference value (D), the secondary judgment unit (32 5b) generates secondary judgment information.

[0081] The second judgment unit (325b) can provide second judgment information to the server (300) through the gateway (200). When the server (300) receives the second judgment information, it can generate a fall notification generation signal and provide the fall notification generation signal to the first notification unit (140) and the signal transmission unit (330) of the management device (400), respectively. When the first notification unit (140) receives the fall notification generation signal, it can output a warning signal. Through this, a guardian or another person in the same room or in a different room can discover the child who has fallen. When the signal transmission unit (330) receives the fall notification generation signal, it outputs a warning signal so that it can quickly move to the child who has fallen and check the child's condition.

[0082] In some embodiments, a fall prevention system at home using a smart band includes a smart band (100) comprising a sensor unit (130); a bed sheet (510) comprising a flat portion and a linear portion on a bed frame, and a bed state storage unit (530) storing information about the linear angle of the linear portion; and a server (300) linked with the smart band (100) and the smart bed (500), wherein the server (300) determines whether a fall has occurred based on sleep information received from the sensor unit (130) and information about the linear angle received from the bed state storage unit (530).

[0083] The above server (300) may include a data storage unit (310) that stores sleep information received from the sensor unit (130), a data processing unit (320) that determines whether a fall has occurred based on the sleep information, and, if it is determined by the data processing unit (320) that a fall has occurred, generate a fall notification generation signal and provide the fall notification generation signal to the smart band (100) and the management device (400).

[0084] The data processing unit (320) may include a sleep information learning unit (321) that learns the child's sleep information based on the sleep information, and a fall judgment unit (325) that determines a fall based on the learned sleep information.

[0085] A person skilled in the art to which the present invention pertains will be able to make modifications and variations to the foregoing without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by these embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0087] 100: Smart Band 200: Gateway 300: Server

Claims

Claim 1 A smart band (100) including a sensor portion (130); a bed sheet (510) including a flat portion and a linear portion on a bed frame; and a bed state storage portion (530) storing information about the linear angle of the linear portion; The system includes a server (300) linked to the smart band (100) and the smart bed (500), wherein the server (300) determines whether a fall has occurred based on sleep information received from the sensor unit (130) and information regarding the linear angle received from the bed state storage unit (530). The server (300) includes a data storage unit (310) that stores sleep information received from the sensor unit (130), a data processing unit (320) that determines whether a fall has occurred based on the sleep information, and when it is determined by the data processing unit (320) that a fall has occurred, it generates a fall notification generation signal and provides the fall notification generation signal to the smart band (100) and the management device (400). The data processing unit (320) includes a sleep information learning unit (321) that learns the child's sleep information based on the sleep information, and a fall determination unit (325) that determines a fall based on the learned sleep information. The smart bed (500) is the The bed frame further includes an armrest (520) physically connected to the bed frame and a communication unit, the bed state storage unit (530) measures and stores connection information between the armrest (520) and the bed frame, or height information of the armrest (520) in real time, the fall detection unit (325) includes a first detection unit (325a) and a second detection unit (325b), the bed state storage unit (530) provides information on the linear angle of the linear unit and connection information between the armrest (520) and the bed frame, or height information of the armrest (520) to the second detection unit (325b) through the communication unit, and the sensor unit (130) includes a sleep sensing unit (130) and a fall sensing unit (130).The sleep sensing unit (130) senses the child's sleep state in real time and provides information regarding the sensed child's sleep time to the data storage unit (310), the data storage unit (310) provides information regarding the child's sleep time to the sleep information learning unit (321), the sleep information learning unit (321) learns the child's sleep information based on the information regarding the child's sleep time, and the learned sleep information is provided to the secondary judgment unit (325b), the fall sensing unit (130) detects a primary fall state using the speed and altitude at which the child's wrist descends, and if the speed at which the child's wrist descends is greater than or equal to a first threshold (A) and the altitude of the child's wrist is less than or equal to a second threshold (B), the fall sensing unit (130) provides information regarding the speed at which the wrist descends greater than or equal to the first threshold (A) and information regarding the altitude of the wrist less than or equal to the second threshold (B) to the primary judgment unit (325a). Provided to the judgment unit (325a), and the first judgment unit (325a), based on the information regarding the speed at which the wrist descends that is greater than or equal to the first reference value (A) and the information regarding the height of the wrist that is less than or equal to the second reference value (B) received from the fall sensing unit (130), verifies again that the speed at which the wrist descends that is greater than or equal to the first reference value (A) and the height of the wrist that is less than or equal to the second reference value (B), and if it is verified again that the speed at which the wrist descends that is greater than or equal to the first reference value (A) and the height of the wrist that is less than or equal to the second reference value (B), provides the first judgment information to the second judgment unit (325b), and the first judgment unit (325a), based on the information regarding the speed at which the wrist descends that is greater than or equal to the first reference value (A) and the information regarding the height of the wrist that is less than or equal to the second reference value (B) received from the fall sensing unit (130), verifies again that the speed at which the wrist descends that is less than the first reference value (A) or the height of the wrist If it is confirmed that the second threshold (B) is exceeded, the first judgment information is not generated, and the first judgment information is not provided to the second judgment unit (325b).The second judgment unit (325b) makes a second judgment regarding a child's fall based on information regarding the child's sleep time received from the sleep information learning unit (321), the first judgment information received from the first judgment unit (325a), information regarding the linear angle of the linear unit received from the bed state storage unit (530), and connection information between the armrest (520) and the bed frame, or height information of the armrest (520); the second judgment unit (325b) compares the time at which the sleep information and the first judgment information were received; and if the second judgment unit (325b) determines that the time at which the first judgment information was received is within the child's sleep time of the information regarding the child's sleep time, it subsequently determines whether the linear angle is an angle less than or equal to a third reference value (C) based on the information regarding the linear angle of the linear unit; and the second judgment unit (325b) determines whether the linear angle at the time at which the first judgment information was received is A fall prevention system at home using a smart band that determines whether the armrest (520) and the bed frame are connected and whether the height of the armrest (520) is less than or equal to a fourth standard value (D) based on connection information between the armrest (520) and the bed frame and height information of the armrest (520) when the angle is determined to be a third standard value (C). 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