KR20200105040A - Apparatus for preventing accidents for dementia patients and method and thereof - Google Patents

Abstract

The present invention relates to an apparatus for preventing accidents for dementia patients and a method thereof. More particularly, the present invention relates to the apparatus for preventing accidents for dementia patients and the method thereof which prevent accidents expected in a dementia patient by predicting the risk in advance of the dementia patient falling out of a preset living environment range (specific range) or, in addition, the dementia patient falling out of the bed when the dementia patient sleeps in bed.

Description

Accident prevention device and method for dementia patients {APPARATUS FOR PREVENTING ACCIDENTS FOR DEMENTIA PATIENTS AND METHOD AND THEREOF}

The present invention relates to an accident prevention device and a method for a dementia patient, and more particularly, when the dementia patient goes out of a pre-set living environment range (a specific range), or when the dementia patient sleeps in bed, the above The present invention relates to an accident prevention apparatus and a method for dementia patients to predict the risk of falling out of bed in advance and to prevent accidents expected to the dementia patient in advance.

Recently, due to the development of industrial technology and medical technology, people's life expectancy is increasing, and as the modern society enters the era of super-aging, the number of dementia patients suffering from dementia is rapidly increasing.

In general, dementia refers to a wide range of brain damage, and accompanies a variety of symptoms such as memory impairment, decreased situational awareness, personality change, decreased ability to communicate, and paralysis of parts of the body.

In the case of dementia patients, not only personal information including their name, home address, and guardian's phone number, but also their usual directions are temporarily forgotten, so if the person with dementia goes out alone, they may disappear or go missing. There is this.

In order to solve this problem, recently, a dementia patient management technology has been developed and commercialized in which a GPS sensor is attached to a dementia patient so that the location of the dementia patient can be recognized in real time.

However, in the conventional dementia patient management technology, when the dementia patient leaves the residence and the dementia patient goes missing or disappears, the location of the dementia patient is checked, so the measures for the dementia patient who have left the residence are delayed. In addition, there is a problem in that a guardian must always monitor the location of the dementia patient in real time.

In addition, when a dementia patient sleeps in a bed, the dementia patient may fall from the bed due to tossing or writhing.

At this time, the dementia patient is unable to notify the guardian or take separate measures on his or her own due to the decrease in situational awareness, the decrease in the ability to communicate, and the paralysis of the body part. There is a problem that can cause serious injury.

In particular, there is a risk that the damage caused by the fall accident may be further expanded at night when the management of the guardian for the dementia patient is weak.

Therefore, if a dementia patient deviates from a certain range or predicts the risk of falling out of bed in advance, it is possible to prevent in advance the accident of a dementia patient including the disappearance or the whereabouts of the departure, the damage due to a fall, or a combination of these. It will be able to provide convenience for carers who protect dementia patients.

Accordingly, the present invention detects the movement speed of the dementia patient, and when the trend of the detected movement speed continuously increases, it is determined that the dementia patient is out of a predetermined range after a certain time, and informs the guardian about this. And, by detecting a change in the center of gravity of the dementia patient in bed, when it is certain that the dementia patient is out of bed after a certain time, by providing a notification about this, an accident that may occur to the dementia patient We would like to propose an accident prevention device and method for dementia patients that can prevent the disease in advance.

Next, the prior art existing in the technical field of the present invention will be briefly described, and then the technical matters that the present invention intends to achieve differentiated from the prior art will be described.

First, Korean Patent No. 14832884 (2015.01.09.) relates to a device for roaming management of a dementia patient. The dementia patient is installed in a specific area in a living area in which the dementia patient resides and is formed of a pad. The present invention relates to a device for managing a dementia patient's roaming that detects leaving an area and provides a notification sound or vibration to a mobile terminal provided by a guardian protecting the dementia patient.

In the prior art, since the dementia patient notifies the guardian after leaving a specific area, there is a limitation in preventing accidents that may occur to the dementia patient due to the departure.

On the other hand, the present invention detects the movement speed of a dementia patient, and when the trend of the detected movement speed is expected to deviate from a predetermined range after a predetermined period of time due to a constant or continuous increase. It is to be able to notify the guardian of the dementia patient, and by notifying the guardian before the dementia patient deviates from a certain range, it is possible to prevent accidents caused by the departure.

Therefore, the prior art does not describe or suggest these technical features of the present invention.

In addition, Korean Registered Patent No. 1287943 (2013.07.15.) relates to a fall patient monitoring system using a mat with a number of magnetic sensors built in. A pass made of a rubber magnet mounted on a patient's clothing and a magnetic sensor placed on the bed are embedded. The present invention relates to a fall patient monitoring system using a mat having a built-in mat to configure a mat and to determine whether a patient falls according to a connection state between the magnetic sensor and the pad.

The prior art simply judges whether a fall has occurred according to the connection state of the magnetic sensor and the pad. This has a problem in that the accident due to the fall cannot be prevented in advance because the patient checks the fall condition when the patient falls from the bed.

On the other hand, the present invention detects a change in the center of gravity of the dementia patient in bed and provides an alarm to the guardian when the dementia patient is predicted to fall in bed after a certain period of time. By making it possible to prevent possible accidents in advance, it is clear that the prior art and the present invention have different technical features.

The present invention was created to solve the above problems, and when the dementia patient moves, it predicts in advance that the dementia patient deviates from the preset one point range, and provides a notification to the guardian. Its purpose is to provide an accident prevention device and a method that can prevent accidents in advance.

In addition, when a dementia patient sleeps in a bed, the center of gravity movement of the dementia patient is detected, and the risk of the dementia patient falling from the bed is predicted in advance based on the sensed center of gravity movement and provided as a notification to the guardian. By doing so, it is an object of the present invention to provide an accident prevention apparatus and a method for a dementia patient that can prevent an accident from being raised due to a fall.

In addition, the present invention receives information on the movement speed and direction of movement according to the movement of the dementia patient from a sensor worn on the dementia patient, calculates the RSSI value of the signal for the received information, and calculates the received movement speed. And accident prevention for dementia patients, which predicts in advance that the dementia patient deviates from a predetermined range based on the movement direction and the calculated RSSI value, and provides a notification of the predicted result to the guardian. Another object is to provide an apparatus and a method thereof.

In addition, the present invention, while storing the RSSI value and the distance information according to the corresponding RSSI value, calculate the RSSI value of the signal to check the distance to the accident prevention device for the dementia patient and the distance to the dementia patient Another object of the present invention is to provide an accident prevention apparatus and method for a dementia patient that enables detection of the movement of the dementia patient according to a change in the RSSI value over time.

In addition, in the present invention, when the movement of the dementia patient is detected, and the received movement direction is a direction in a predetermined specific range, a trend of the received movement speed is calculated, and a predetermined time based on the calculated trend Another object of the present invention is to provide an accident prevention apparatus and a method for the dementia patient for providing the notification to the guardian when the dementia patient is predicted to deviate from the predetermined range.

In addition, the present invention detects that the center of gravity of the dementia patient moves when the dementia patient sleeps in bed at night, and predicts in advance that the dementia patient falls from the bed based on the detected result, Another object of the present invention is to provide an accident prevention apparatus and a method for a dementia patient that enables the notification to be provided to the guardian.

In this case, the present invention detects the movement speed of the dementia patient with respect to the center of gravity of the dementia patient per unit time to calculate the change trend of the movement speed, and the dementia patient leaves the bed after a certain time according to the calculated change trend. When it is certain, the notification is provided to the guardian, so that the guardian can prevent an accident about a fall.

An accident prevention device for a dementia patient according to an embodiment of the present invention receives movement information including a movement speed and a movement direction of the dementia patient from a first sensor worn by the dementia patient when the dementia patient moves When the dementia patient sleeps in the bed, a weight information receiving unit that receives weight information for each leg from a second sensor mounted on each leg of the bed, and the received movement information A distance information generator that measures an RSSI value for a signal and calculates distance information for a corresponding dementia patient based on the center of a predetermined specific range using the measured RSSI value, and receives the calculated distance information Dementia patient departure prediction unit that predicts in advance that the dementia patient deviates from the specific range using one movement information, and dementia that predicts in advance the risk of the dementia patient falling from the bed based on the received weight information It characterized in that it comprises a patient fall predictor.

In addition, the distance information generating unit calculates distance information for the dementia patient according to the measured RSSI value by referring to a mapping table in which the previously stored RSSI value and distance information are mapped, and the first sensor includes an acceleration sensor and a gyro. A sensor, an inertial sensor, or a combination thereof, and the second sensor, is characterized in that it is composed of a weight sensor.

In addition, the dementia patient departure prediction unit, if the received movement direction is a direction in the specific range, generates an increase or decrease pattern according to the amount of change in the movement speed using the received movement speed, and based on the calculated distance information By analyzing the trend of the generated increase/decrease pattern, it is possible to predict in advance that the dementia patient deviates from the specific range after a certain time, and to provide the predicted result to the guardian of the dementia patient as a notification, and the The increase/decrease pattern according to the amount of change in the moving speed is generated by measuring a rate of change of the moving speed versus time by differentiating the amount of change in the moving speed according to time by a preset unit time.

In addition, the dementia patient fall prediction unit measures the weight ratio and weight change amount for each leg based on the received weight information for each leg of the bed, and uses the measured weight ratio and weight change amount to determine the dementia in the bed. By calculating the movement speed of the center of gravity according to the movement of the center of gravity of the patient, an increase or decrease pattern is generated for the amount of change of the movement speed of the center of gravity over time, and the amount of change of the generated movement speed of the center of gravity based on the size of the previously stored bed. By analyzing the trend of the increase/decrease pattern for, after a predetermined time, the risk of falling from the bed is predicted in advance, and the predicted result can be provided as a notification to the guardian of the dementia patient. To do.

In addition, the accident prevention method for a dementia patient according to an embodiment of the present invention, when the dementia patient moves, the movement information including the movement speed and the movement direction of the dementia patient from the first sensor worn by the dementia patient Receiving movement information receiving step, when the dementia patient sleeps in a bed, a weight information receiving step of receiving weight information for each leg from a second sensor mounted on each leg of the bed, the received Distance information generation step of measuring an RSSI value for a signal of movement information, and calculating distance information for a corresponding dementia patient based on the center of a predetermined specific range using the measured RSSI value, the calculated distance Dementia patient departure prediction step of predicting in advance that the dementia patient deviates from the specific range using information and the received movement information, and the risk of the dementia patient falling from the bed based on the received weight information. It characterized in that it comprises a fall prediction step of predicting the dementia patient.

In addition, in the generating of the distance information, distance information for the dementia patient is calculated according to the measured RSSI value by referring to a mapping table in which the previously stored RSSI value and distance information are mapped.

In addition, in the dementia patient departure prediction step, if the received movement direction is a direction in the specific range, an increase or decrease pattern according to a change in movement speed is generated using the received movement speed, and the calculated distance information is Based on the trend of the generated increase/decrease pattern, it is possible to predict in advance that the dementia patient deviates from the specific range after a certain time, and to provide the predicted result to the guardian of the dementia patient as a notification, The increase/decrease pattern according to the amount of change in the moving speed is generated by measuring the rate of change of the moving speed versus time by differentiating the amount of change in the moving speed according to time by a preset unit time.

In addition, in the step of predicting the fall of the dementia patient, the weight ratio and weight change amount for each leg are measured based on the weight information for each leg of the bed, and the measured weight ratio and weight change amount are used in the bed. By calculating the center of gravity movement speed according to the movement of the center of gravity of the dementia patient, an increase or decrease pattern is generated for the amount of change in the movement speed of the center of gravity over time, and the generated center of gravity movement speed is calculated based on the size of the previously stored bed. By analyzing the trend of the increase/decrease pattern for the amount of change, after a certain time, the risk of falling from the bed is predicted in advance, and the predicted result can be provided as a notification to the guardian of the dementia patient. It is characterized.

The present invention configured as described above receives a signal including a movement speed and a movement direction of the dementia patient through a sensor attached to a body part of the dementia patient, and the received movement speed and movement direction and the RSSI calculated from the signal Based on the value, by predicting in advance that the dementia patient deviates from a predetermined range set in advance, and by notifying the predicted result to the guardian of the dementia patient, there is an effect of preventing accidents caused by the departure in advance. have.

In addition, the present invention predicts in advance the risk of the dementia patient falling from the bed by sensing the movement of the dementia patient's center of gravity according to the dementia patient's turn or movement when the dementia patient sleeps in bed Thus, by notifying the predicted result to the guardian of the dementia patient, there is an effect of preventing the accident due to the fall in advance.

1 is a conceptual diagram schematically illustrating an accident prevention apparatus and method for a dementia patient according to an embodiment of the present invention.
2 is a diagram illustrating a process of predicting that the dementia patient deviates from a specific range through the accident prevention apparatus for a dementia patient according to an embodiment of the present invention.
3 is a diagram illustrating a process of predicting that the dementia patient falls from the bed through an accident prevention device for the dementia patient when a dementia patient sleeps in a bed according to an embodiment of the present invention.
Figure 4 is a dementia patient movement speed according to an embodiment of the present invention or by extracting the movement speed increase or decrease pattern for the center of gravity movement of the dementia patient in bed, the dementia patient deviates from a predetermined range or the bed It is a diagram shown to explain a method for predicting in advance what falls from
5 is a block diagram showing the configuration of an accident prevention apparatus for a dementia patient according to an embodiment of the present invention.
6 is a flowchart illustrating a procedure for predicting that a dementia patient deviates from a predetermined range by using an accident prevention device for a dementia patient according to an embodiment of the present invention.
7 is a flow chart illustrating a procedure for predicting that a dementia patient falls from a bed using an accident prevention device for a dementia patient according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific structural or functional descriptions of the embodiments disclosed in the specification or application of the present invention are exemplified only for the purpose of describing the embodiments according to the present invention, and unless otherwise defined, technical or scientific All terms used in this specification, including terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this specification. No.

1 is a conceptual diagram schematically illustrating an accident prevention apparatus and method for a dementia patient according to an embodiment of the present invention.

As shown in Fig. 1, the accident prevention device 100 for a dementia patient according to an embodiment of the present invention includes a first sensor 200 and a dementia patient worn on a part of the body such as a wrist or ankle of a dementia patient. By collecting sensing information from the second sensor 300 mounted on each leg of the bed used by the dementia patient, it is predicted that the dementia patient deviates from a predetermined range, or the risk of the dementia patient falling out of the bed By predicting and transmitting the predicted result to the guardian terminal 400 provided by the guardian of the dementia patient, the function of preventing accidents of the dementia patient due to the departure or fall is supported.

The first sensor 200, the second sensor 300, and the accident prevention device 100 for dementia patients are connected to each other through various wireless communication methods such as 4G, 5G, LTE, beacon, etc. You can send and receive data for prevention. However, in the present invention, the wireless communication method for transmitting and receiving the data is not limited.

The first sensor 200 may be implemented in the form of a wearable device so that a part of the body of the dementia patient may be worn.

In addition, when the dementia patient moves within the preset specific range, the first sensor 200 detects the movement speed and direction of the dementia patient.

In addition, the first sensor 200 modulates the detected movement speed and movement direction into a signal suitable for the wireless communication method and transmits it to the accident prevention device 100 for a dementia patient, and an acceleration sensor, a gyro sensor, and an inertia It may be composed of a sensor or a combination thereof.

However, it is natural that the first sensor 200 of the present invention can be configured with a variety of well-known sensors capable of detecting the moving speed and direction of movement of a dementia patient.

In addition, the second sensor 200, each positioned on the legs of the bed, when the dementia patient sleeps in the bed, measures the load (ie, weight information) applied to each leg of the bed, and the measured weight To perform a function of modulating information into a signal suitable for a wireless communication method and transmitting it to the accident prevention device 100 for a dementia patient, it is composed of a weight sensor.

At this time, the predetermined range may be set to a circle having a constant diameter, and the accident prevention device 100 for the dementia patient may be located at the center of the circle.

In addition, the accident prevention device 100 for a dementia patient may operate in a day mode and a night mode according to the setting of the guardian, and when operating in the day mode, the movement of the dementia patient received from the first sensor 200 Accidents that may occur to the dementia patient due to the departure by predicting that the dementia patient deviates from a specific range previously set on the basis of the speed and movement direction are provided to the guardian terminal 400 (e.g., disappearance, Missing, etc.) can be prevented in advance.

In addition, the accident prevention device for dementia patients 100, when operating in the night mode, based on the weight information received from the second sensor 200, detects the movement of the center of gravity of the dementia patient in bed, the By predicting in advance that the dementia patient will fall from the bed and providing the predicted result to the guardian terminal 400, accidents (eg, physical injuries) that may occur to the dementia patient due to the fall can be prevented in advance. To prevent it.

Meanwhile, the accident prevention device 100 for the dementia patient may be provided on a ceiling, wall, floor, or bed within the predetermined specific range. In this case, the accident prevention device 100 for the dementia patient is preferably located in the center of the predetermined specific range, and is implemented to predict the departure and fall in advance.

In addition, the guardian terminal 400, which means a wired/wireless communication terminal provided by the guardian or manager of the dementia patient, receives the predicted result of departure and fall received from the accident prevention device 100 for the dementia patient Thus, by providing the dementia patient to the guardian or manager, it is possible to quickly take the dementia patient's control before the dementia patient deviates from the specific range or before the dementia patient falls in the bed.

In addition, the accident prevention device 100 for the dementia patient is connected to the guardian terminal 400 through various wired and wireless communication methods such as Ethernet, 4G, 5G, etc., and the prediction result is transmitted to the guardian terminal 400 in real time. Can provide.

On the other hand, predicting a departure from a specific range of a dementia patient is performed during the day, and predicting a fall of a dementia patient from bed is described as being performed at night, but the dementia patient can move at night and even in the daytime. Since it is possible to sleep in bed, it is natural that the departure prediction and fall prediction can be performed in real time regardless of day or night.

Meanwhile, the process of predicting that the dementia patient leaves a specific range and the process of predicting that the dementia patient falls from the bed will be described in detail with reference to FIGS. 2 and 3, respectively.

Hereinafter, a process of predicting that the dementia patient deviates from a specific range through the accident prevention apparatus 100 for a dementia patient will be described in detail.

2 is a diagram illustrating a process of predicting that the dementia patient deviates from a specific range through the accident prevention apparatus for a dementia patient according to an embodiment of the present invention.

As shown in Figure 2, the process of predicting that the dementia patient deviates from a specific range through the accident prevention device 100 for a dementia patient according to an embodiment of the present invention, first, for the dementia patient The accident prevention device 100 receives movement information including a movement speed and a movement direction of a corresponding dementia patient from the first sensor 200 in real time (①).

In this case, the accident prevention device 100 for the dementia patient may be located in the center of the predetermined specific range.

When the dementia patient moves, the first sensor 200 detects movement information including a movement speed and a movement direction for the dementia patient, and the detected movement by the accident prevention device 100 for the dementia patient Transmit information in real time.

In addition, the accident prevention apparatus 100 for the dementia patient measures the RSSI (received signal strength indication) value of the signal for the movement information.

Thereafter, the accident prevention apparatus 100 for the dementia patient refers to the previously stored RSSI value and the mapping table mapping distance information to the dementia patient based on the RSSI value of the signal for the measured movement information. The distance information between the accident prevention device 100 (ie, the center of a specific range) for the dementia patient is calculated (②).

At this time, when the RSSI value changes, it can be seen that the dementia patient moves, and when the RSSI value increases, the distance between the dementia patient and the accident prevention device 100 for the dementia patient gets closer. It can be seen that when the RSSI value decreases, the distance between the dementia patient and the accident prevention device 100 for the dementia patient gradually increases.

In addition, the accident prevention device 100 for the dementia patient predicts in advance that the dementia patient deviates from a specific range previously set based on the measured RSSI value and the received movement speed and direction of the dementia patient. Do (③).

At this time, the accident prevention device 100 for the dementia patient stores the coordinates for the predetermined specific range, and based on the change of the measured RSSI value and the calculated distance information and movement direction, the dementia It is possible to predict in advance that the patient deviates from a predetermined range.

For example, when the change in the RSSI value gradually decreases and the movement direction is in the south direction (ie, the direction to the specific range), the dementia patient is based on the accident prevention device 100 for the dementia patient. It can be seen that it moves in the south direction at a specific distance in the south (ie, the distance according to the measured RSSI value). That is, the accident prevention device 100 for the dementia patient may predict in advance that the dementia patient deviates from the specific range based on the RSSI value, the change in the RSSI value, and the movement direction and movement speed of the dementia patient. It can be.

As another example, when the change in the measured RSSI value increases and the direction of movement of the dementia patient is in the south direction, the dementia patient is at a specific distance in the north direction based on the accident prevention apparatus 100 for the dementia patient. It can be seen that it is located and moves inside the specific range.

That is, the accident prevention device 100 for the dementia patient includes distance information between the dementia patient and the accident prevention device 100 for the dementia patient calculated based on the RSSI value, the change in the RSSI value over time, It can be seen that the dementia patient moves into the specific position based on the movement direction and movement speed.

At this time, when the distance information is calculated, a linear distance between the dementia patient and a specific range according to the moving direction is known.

In addition, the accident prevention device 100 for the dementia patient generates an increase or decrease pattern for the amount of change in the movement speed according to the passage of time, using the received movement speed, and the generated distance information based on the calculated distance information. Analyze the trend of the increase or decrease pattern for the amount of change in the moving speed.

Thereafter, when the trend is continuously increased beyond a preset value, and after a certain period of time, when the dementia patient is predicted to deviate from the specific range, the predicted result is notified to the caregiver terminal 400 (④ ), so that accidents caused by the departure can be prevented in advance.

The increase/decrease pattern for the amount of change of the moving speed is generated by measuring the rate of change of the moving speed versus time by differentiating the change amount of the moving speed over time by a preset unit time based on the previously collected moving speed. Based on this, it can be predicted that the user leaves the specific range after a certain time.

Meanwhile, a method for predicting that the dementia patient deviates from a specific range by extracting an increase or decrease pattern for the amount of change in the movement speed will be described in detail with reference to FIG. 4.

3 is a diagram illustrating a process of predicting that the dementia patient falls from the bed through an accident prevention device for the dementia patient when a dementia patient sleeps in a bed according to an embodiment of the present invention.

As shown in FIG. 3, when a dementia patient sleeps in a bed according to an embodiment of the present invention, the dementia patient predicts the risk of falling from the bed through the accident prevention device 100 for the dementia patient. In the process, first, the accident prevention device 100 for the dementia patient receives weight information obtained by measuring the weight of each leg of the bed from the second sensor 300 in real time (①).

The second sensor 300 is mounted on each leg of the bed, and when the dementia patient sleeps in the bed, weight information obtained by measuring the weight, which is the load applied to each leg of the bed, is used to prevent accidents for the dementia patient. It is transmitted to the device 100 in real time.

However, the second sensor 300 is located below the matrix located on the bed and detects the movement of the center of gravity of the dementia patient, and the detection result is the accident prevention device 100 for the dementia patient. It can be implemented so that it can be provided as

In addition, the accident prevention device 100 for the dementia patient is based on the weight information received from each of the second sensors 300, the center of gravity according to the ratio and weight change amount of the weight information of each second sensor 300 It detects which direction it is moving (②).

For example, when the weight information of the second sensor 300 positioned on the right decreases and the weight information of the second sensor 300 positioned on the left increases, the center of gravity of the dementia patient moves to the left. Can be seen.

In addition, the accident prevention device 100 for the dementia patient calculates the center of gravity movement speed based on the amount of change in the weight of the second sensor 300, and prevents the dementia patient from falling from the bed according to the calculated result. Predict (③).

At this time, the accident prevention device 100 for the dementia patient extracts an increase/decrease pattern for the amount of change in the calculated center of gravity movement speed, and analyzes the trend for the extracted increase/decrease pattern based on the size of the bed previously stored. Thus, the increase/decrease pattern is increased to a certain value or more, and after a certain time, the risk of falling from the bed is predicted in advance, and the predicted result is notified to the guardian terminal 400 (④), so that the fall To prevent accidents in patients with dementia caused by

Meanwhile, a method of predicting that the dementia patient falls from the bed by extracting an increase/decrease pattern for the moving speed of the center of gravity will be described in detail with reference to FIG. 4.

Figure 4 is a dementia patient movement speed according to an embodiment of the present invention or by extracting the movement speed increase or decrease pattern for the center of gravity movement of the dementia patient in bed, the dementia patient deviates from a predetermined range or the bed It is a diagram showing to explain a process for predicting in advance that a person falls from

As shown in Figure 4, by extracting the movement speed of the dementia patient according to an embodiment of the present invention or an increase or decrease pattern of the movement speed for the movement of the center of gravity of the dementia patient in bed, and a specific range previously set by the dementia patient The process of predicting in advance that a person leaves or falls from the bed is, first, the movement speed of the user based on movement information including the movement speed and the movement direction of the user received in real time from the first sensor 200. Extract the increase or decrease pattern for change.

That is, the accident prevention device 100 for the dementia patient is differentiated by a predetermined unit time to the amount of change in movement speed according to time received from the first sensor 200 in real time, and the movement speed of the dementia patient is Extract the increase or decrease pattern for change. By analyzing the trend of the movement speed of the dementia patient using such an increase or decrease pattern, it is possible to predict in advance that the dementia patient deviates from a predetermined range after a certain time.

For example, if the dementia patient is 10m away from the accident prevention device 100 for a dementia patient from the result of measuring the RSSI value, the accident prevention device 100 for the dementia patient receives the received movement direction It is possible to know the linear distance between the specific range located at and the dementia patient.

Accordingly, when the direction of movement of the dementia patient is the direction to the specific range and the linear distance is 4m, and the trend of the movement speed is 2m per second as a result of extracting the increase/decrease pattern, the dementia patient It can be seen that it deviates from the specific range.

That is, the accident prevention device 100 for the dementia patient analyzes the calculated distance information between the dementia patient and the accident prevention device 100 for the dementia patient and the trend of the increase or decrease pattern for the amount of change in the moving speed Thus, it is predicted that the dementia patient will deviate from the specific range after a certain time from the current location of the dementia patient.

As the unit time is shorter, it is possible to more accurately predict whether the dementia patient deviates from the specific range after a predetermined time.

In addition, the accident prevention device 100 for the dementia patient can extract the increase/decrease pattern for the change amount of the center of gravity movement speed of the dementia patient in the bed through the same process as described above, and the increase/decrease pattern is a preset value As above, by predicting that the dementia patient will fall from the bed after a certain time based on the size of the previously stored bed, it is possible to prevent accidents caused by the fall in advance.

5 is a block diagram showing the configuration of an accident prevention apparatus for a dementia patient according to an embodiment of the present invention.

As shown in Figure 5, the accident prevention device 100 for a dementia patient according to an embodiment of the present invention, the movement speed according to the movement of the dementia patient from the first sensor 200 worn on the dementia patient and The movement information receiving unit 110 for receiving movement information including the movement direction, when the dementia patient sleeps in the bed, the second sensor 300 located at each leg of the bed for the load applied to each leg A weight information receiving unit 120 for receiving weight information, a distance information calculating unit 130 for calculating distance information between the dementia patient and the accident prevention device 100 for the dementia patient by using the received movement information signal ), the dementia patient departure prediction unit 140 for predicting that the dementia patient deviates from a predetermined range based on the calculated distance information and the received movement information, the dementia patient based on the received weight information The dementia patient fall prediction unit 150 that predicts the risk of falling in the bed, the dementia patient departure prediction unit 140 and the dementia patient fall prediction unit 150 predict the result to the guardian terminal 400 It is configured to include a notification unit 160 and a memory (not shown) to provide.

The memory includes coordinate information for a predetermined range, a mapping table mapping distance information according to the RSSI value of a signal, and the size of the bed used by the dementia patient (ie, horizontal, vertical, height information). It performs a function of storing data related to the accident prevention of the dementia patient.

The movement information receiving unit 110 supports a function of receiving movement information of the dementia patient moving at night or daytime from the first sensor 200 in real time according to the setting of the guardian.

Meanwhile, the movement information is preferably measured and received from the first sensor 200 during the day when the movement of the dementia patient is active. However, since the dementia patient can move even at night, the movement information is transmitted to the first sensor ( 200) can be received in real time.

In addition, the weight information receiving unit 120, when the dementia patient sleeps in bed at night or day according to the setting of the guardian, the corresponding leg from the second sensor 300 located at each leg of the bed It supports the function of receiving the weight information that is applied in real time.

On the other hand, the weight information is preferably received at night when the dementia patient sleeps, but since the dementia patient can sleep in bed even during the daytime, the weight information is transmitted to the second according to the setting of the guardian even during the daytime. It can be received from the sensor 200 in real time.

In addition, the distance information calculator 130 measures the RSSI value of a signal for the received movement information, and calculates distance information between the accident prevention device 100 for the dementia patient and the dementia patient. Perform.

On the other hand, the calculation of the distance information is performed by selecting the distance information for the measured RSSI value by referring to a mapping table that maps distance information to an RSSI value stored in a memory (not shown).

In addition, when the received movement direction is a direction for the specific range, the dementia patient departure prediction unit 140 generates an increase or decrease pattern for the amount of change in movement speed over time based on the received movement speed.

As described above, the increase/decrease pattern refers to a trend toward a change in the moving speed.

Thereafter, the dementia patient departure prediction unit 140 analyzes an increase or decrease pattern for the amount of change in the extracted movement speed based on the calculated distance information for the dementia patient, so that the dementia patient Departing from the set specific range is predicted, and a notification can be provided to the parental terminal 400 through the notification unit 160.

That is, the dementia patient departure prediction unit 140 continuously increases the increase/decrease pattern for the amount of change in the movement speed above a preset threshold value, and after a predetermined time, the dementia patient is determined from the calculated distance information. When it is expected to deviate from the range, that is, by notifying the guardian before the dementia patient deviates from the specific range, it is possible to prevent accidents caused by the departure.

In addition, the dementia patient fall prediction unit 150 performs a function of predicting in advance a risk of a fall of the dementia patient while sleeping in bed based on the received weight information.

At this time, the dementia patient fall predictor 150 calculates the ratio according to the weight information of each leg of the bed and the amount of change in the weight information, and calculates the amount of change in the moving speed at which the center of gravity of the dementia patient moves. Extract the increase/decrease pattern for.

Thereafter, the dementia patient's fall prediction unit 150 includes an increase/decrease pattern for the amount of change in the movement speed at which the center of gravity of the dementia patient moves, and after a predetermined time based on the stored bed standard, the dementia patient When it is expected to fall from, the expected result (ie, the fall prediction result) can be reported to the parental terminal 400.

That is, the dementia patient fall prediction unit 150, when the increase/decrease pattern for the amount of change in the movement speed with respect to the center of gravity is greater than or equal to a preset threshold, it is expected that the dementia patient will fall from the bed after a certain time. That is, by notifying the guardian before the dementia patient falls, it is possible to prevent accidents caused by the fall.

6 is a flowchart illustrating a procedure for predicting that a dementia patient deviates from a predetermined range by using an accident prevention device for a dementia patient according to an embodiment of the present invention.

As shown in FIG. 6, the procedure for predicting that the dementia patient deviates from a specific range preset by the dementia patient according to the user's setting by the accident prevention apparatus 100 for a dementia patient according to an embodiment of the present invention is first , The accident prevention device 100 for a dementia patient receives movement information including a movement speed and a movement direction for the dementia patient from the first sensor 200 worn by the dementia patient in real time (S110).

The first sensor 200 is for detecting the moving speed and direction of the dementia patient when the dementia patient moves within a predetermined range, and is implemented as a wearable device to provide a body part of the dementia patient. Can be worn on.

In this case, as described above, the specific range is set to a circle having a specific diameter.

Next, the accident prevention device 100 for the dementia patient measures the RSSI value for the signal of the received movement information (S120), and the distance information on the dementia patient by using the measured RSSI value. It is calculated (S130).

On the other hand, the calculated distance information for the dementia patient means the distance between the dementia patient and the accident prevention device 100 for the dementia patient located in the center of the specific range as described above.

Next, the accident prevention apparatus 100 for the dementia patient generates an increase/decrease pattern for the amount of change in the received movement speed (S140).

The increase/decrease pattern for the amount of change in the moving speed is generated by differentiating the amount of change over time of the moving speed received from the first sensor 200 by a preset unit time.

Next, the accident prevention apparatus 100 for the dementia patient determines whether the dementia patient deviates from the specific range after a certain time by using the increase/decrease pattern of the extracted movement speed change amount and the calculated distance information. Whether or not it is predicted (S150).

That is, when the received movement direction is a direction to a specific range, the accident prevention device 100 for the dementia patient measures a distance between the dementia patient and the specific range based on the calculated distance information, When it is predicted that the dementia patient deviates from the specific range after a certain time according to the trend of the increase/decrease pattern, it is predicted in advance that the dementia patient deviates from the specific range.

Next, when the dementia patient is predicted to deviate from the specific range (S160), the accident prevention device 100 for the dementia patient provides the predicted result to the guardian terminal 400 to By providing a notification, there is an effect of enabling a guardian to quickly take measures for a corresponding dementia patient, thereby preventing an accident caused by the departure.

Hereinafter, a process of predicting that a dementia patient falls from a bed through the accident prevention apparatus 100 for a dementia patient will be described.

7 is a flow chart illustrating a procedure for predicting that a dementia patient falls from a bed using an accident prevention device for a dementia patient according to an embodiment of the present invention.

As shown in FIG. 7, the procedure for predicting that the dementia patient falls from the bed by the accident prevention device 100 for a dementia patient according to an embodiment of the present invention according to a guardian's setting is first, the dementia patient When sleeping in the bed, the accident prevention device 100 for the dementia patient receives the weight information measured from the second sensor 300 mounted on the bed in real time (S210).

The second sensor 300 is mounted on each leg of the bed and measures weight information applied to each leg of the bed according to the movement of the center of gravity of the dementia patient, and an accident prevention device for the dementia patient ( 100) in real time.

Next, the accident prevention device 100 for the dementia patient detects movement to a specific position of the center of gravity according to the ratio of the weight information and the amount of change in the weight information, and the weight according to the movement of the center of gravity After calculating the movement speed of the center (S220), an increase/decrease pattern for the amount of change in the movement speed with respect to the center of gravity is generated according to the passage of time (S230).

Meanwhile, the increase/decrease pattern for the change amount of the moving speed of the center of gravity is the same as the process of generating the increase/decrease pattern for the change amount of the moving speed for the dementia patient.

Next, the accident prevention device for the dementia patient 100 analyzes the trend of the generated increase and decrease pattern based on the pre-stored standard of the bed, predicts that the dementia patient falls from the bed (S240), and the When the predicted result is that the dementia patient is predicted to fall after a certain period of time (S250), the predicted result is provided to the guardian terminal 400, so that accidents of the dementia patient due to the fall can be prevented in advance. .

As described above, the present invention relates to an accident prevention apparatus and a method for a dementia patient, and by predicting the risk of falling out of a predetermined range or falling in the bed in advance by the dementia patient, the predicted By providing the result to a guardian terminal, there is an effect of preventing accidents that may occur in the dementia patient due to the departure and fall.

In addition, in the above, the preferred embodiment according to the present invention has been described above, but the technical idea of the present invention is not limited thereto, and each component of the present invention may be changed or modified within the scope of the present invention to achieve the same object and effect. I will be able to.

In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not departing from the gist of the present invention claimed in the claims. Various modifications may be possible by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

100: accident prevention device for dementia patients 110: mobile information receiving unit
120: weight information receiving unit 130: distance information calculating unit
140: dementia patient departure prediction unit 150: dementia patient fall prediction unit
160: notification unit 200: first sensor
300: second sensor 400: guardian terminal

Claims (6)

When the dementia patient moves, a movement information receiving unit for receiving movement information including a movement speed and a movement direction of the dementia patient from a first sensor worn by the dementia patient;
When the dementia patient sleeps in the bed, a weight information receiving unit for receiving weight information for each leg from a second sensor mounted on each leg of the bed;
A distance information generator configured to measure an RSSI value for the received movement information signal and calculate distance information for a corresponding dementia patient based on a center of a predetermined specific range;
A dementia patient departure prediction unit for predicting in advance that the dementia patient deviates from the specific range using the calculated distance information and the received movement information; And
Accident prevention device for a dementia patient comprising a; dementia patient fall prediction unit for predicting in advance the risk of the dementia patient falling from the bed based on the received weight information. The method according to claim 1,
The distance information generation unit,
An accident prevention device for a dementia patient, comprising calculating distance information for a dementia patient according to the measured RSSI value by referring to a mapping table in which the previously stored RSSI value and distance information are mapped. The method according to claim 2,
The dementia patient departure prediction unit,
If the received movement direction is a direction to the specific range,
Using the received movement speed, an increase/decrease pattern according to the amount of change in the movement speed is generated, and the calculated distance information and the trend of the generated increase/decrease pattern are analyzed, and the dementia patient deviates from the specific range after a certain time. To predict in advance, and to provide the predicted result as a notification to the guardian of the dementia patient,
An accident prevention device for a dementia patient, characterized in that the increase/decrease pattern according to the amount of change in the moving speed is generated by differentiating the amount of change in the moving speed according to time by a preset unit time and measuring a change rate of the moving speed versus time. The method according to claim 1,
The dementia patient fall prediction unit,
Measure the weight ratio and weight change amount for each leg based on the weight information for each leg of the received bed,
Using the measured weight ratio and the amount of weight change, the center of gravity movement speed according to the movement of the center of gravity of the dementia patient in the bed is calculated, thereby generating an increase or decrease pattern for the amount of change of the center of gravity movement speed over time, and ,
By analyzing the trend of the increase/decrease pattern for the amount of change in the center of gravity movement speed generated based on the size of the previously stored bed, after a certain time, the risk of the dementia patient falling from the bed is predicted in advance, and the predicted result Accident prevention device for a dementia patient, characterized in that to be provided as a notification to the guardian of the dementia patient. A movement information receiving step of receiving movement information including a movement speed and a movement direction of the dementia patient from a first sensor worn by the dementia patient when the dementia patient moves;
A weight information receiving step of receiving weight information for each leg from a second sensor mounted on each leg of the bed when the dementia patient sleeps in the bed;
A distance information generation step of measuring an RSSI value of the received movement information signal, and calculating distance information for a corresponding dementia patient based on a center of a predetermined specific range using the measured RSSI value;
A dementia patient departure prediction step of predicting in advance that the dementia patient deviates from the specific range using the calculated distance information and the received movement information; And
Accident prevention method for a dementia patient comprising a; dementia patient fall prediction step for predicting in advance the risk of the dementia patient falling from the bed based on the received weight information. The method of claim 5,
The distance information generating step,
Further comprising calculating distance information for the dementia patient according to the measured RSSI value by referring to the mapping table in which the previously stored RSSI value and distance information are mapped,
The dementia patient departure prediction step,
If the received movement direction is a direction to the specific range,
Using the received movement speed, an increase/decrease pattern according to the amount of change in the movement speed is generated, and the trend of the generated increase/decrease pattern is analyzed based on the calculated distance information, and the dementia patient determines the specific range after a certain time. It is possible to predict the departure in advance, and to provide the predicted result to the guardian of the dementia patient as a notification,
The increase/decrease pattern according to the amount of change in the moving speed further includes that generated by measuring a rate of change of the moving speed versus time by differentiating the change amount of the moving speed according to time by a preset unit time,
The dementia patient fall prediction step,
Measure the weight ratio and weight change amount for each leg based on the weight information for each leg of the received bed,
Using the measured weight ratio and the amount of weight change, the center of gravity movement speed according to the movement of the center of gravity of the dementia patient in the bed is calculated, thereby generating an increase or decrease pattern for the amount of change of the center of gravity movement speed over time, and ,
By analyzing the trend of the increase/decrease pattern for the amount of change in the center of gravity movement speed generated based on the size of the previously stored bed, after a certain time, the risk of the dementia patient falling from the bed is predicted in advance, and the predicted result Accident prevention method for a dementia patient, characterized in that to be provided as a notification to the guardian of the dementia patient.

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