KR20120114893A - Alarm pad and controlling apparatus for detecting falldown, falldown checking method using these - Google Patents

Abstract

PURPOSE: An alarm pad for sensing bed-falling, a control device thereof, and a method for determining bed-falling with the same are provided to separate a wire having a length extended in a longitudinal direction on a pad member in a horizontal direction and combine a sensor with a free end of the wire. CONSTITUTION: A plurality of wires(120) are installed on a pad member(110). The wires are placed at regular intervals in left and right directions. An end of a wire is connected with a sensor(130). The sensor generates a signal according to a position change of the end of the wire. A control unit(140) calculates a location or a movement speed of a user according to the input of the signal.

Description

Alarm pad and controlling apparatus for detecting falldown, falldown checking method using these}

The present invention relates to an alarm pad for detecting a fall image, a control device used therein, and a method for determining a fall image using the same.

With the development of medical technology, there are health care services to help the elderly and the pedestrians who are inconvenient in their daily lives with confidence, but as the aging society progresses, they grow older. As the proportion of the infirm elderly is increasing, there is a need for a supplement of manpower or systems to care for and manage them.

Due to the lack of manpower, it is virtually impossible to watch and watch the growing number of sick and ill people 24 hours a day, and the research of intelligent care system is actively conducted, especially for the elderly living alone or the elderly who have a long time living alone. As a result, fall rescue services are being spotlighted to prepare for unintended accidents caused by falls.

Falls are one of the most serious accidents in the absence of a caregiver. Frail sick and vulnerable people can be severely injured by falling only, so prevention or early action is essential.

In general, safety bars are installed on the side of the bed, but these safety bars may cause psychological discomfort to the sick and the sick lying on the bed, such as frustration and restraint. There is a risk that a fall accident can occur when you get off and get out of bed.

Looking at fall prevention measures to compensate for the weaknesses of the existing fall detection methods and to implement more active fall prevention, image-based fall detection method, fall detection method using special clothing equipped with sensor, fall of patient The combination of sensors installed at the point where this occurs can be classified into three types corresponding to the method of detecting a fall.

An image-based fall detection method is a method of obtaining image data through an imaging device and processing the signal using a signal processing technique to find out whether a fall has occurred. It is sensitive to lighting, and when the patient is covered by an external material such as a blanket, it is difficult to determine the exact position of the patient, and precise detection is difficult because it detects the fall in an indirect manner through signal processing.

In addition, in case of a fall detection using a special garment equipped with a sensor, an accelerometer or the like should be attached to the patient at all times, and thus the special garment equipped with the sensor should always be worn by the patient or attached to a specific part of the patient. The disadvantage is that you can feel uncomfortable.

The method of detecting the fall of the patient by using a combination of sensors installed at the point where the fall of the patient occurs, has a disadvantage in that it is difficult to implement the precision of the fall detection because it is vulnerable to disturbance factors due to the external material around the bed.

In addition, the existing fall detection system is used as a system for notifying a nurse by text message when a sick old person falls in a bed in some hospitals, but a camera and its attached control device, or a plurality of sensors and its attached parts. Since installation and professional management of special devices including control devices are required, there is a limitation that it is difficult to use them in a general home.

The present invention devised to solve the problems described above, can be accurately determined whether the fall detection without the inconvenience or foreign object caused by the installation, possession, etc. of the sensor, anywhere in addition to expensive special facilities, including ordinary homes An object of the present invention is to provide an alarm pad for detecting a fall image having a simple structure that can be used and managed casually, a control device, and a method of determining a fall image using the same.

The present invention for achieving the above object, the pad member 110; It is composed of a material flexibly bent by the load is installed on the pad member 110, has an extended length in the vertical direction of the body, is arranged at regular intervals in the left and right direction of the body, one end fixed installation A plurality of wires 120; A sensing sensor 130 connected to the other end of the wire 120 and generating a signal according to a change in position of the other end of the wire 120; And a control device 140 that receives a signal from the sensor 130 and calculates a user's position or moving speed, and determines a fall risk state when the user is located at the edge. Let 100 be the technical point.

Here, the detection sensor 130 may be a potentiometer 130a that continuously changes the electric resistance value according to the position change of the other end of the wire 120.

In addition, the potentiometer (130a), a straight or circular rail 131; One side is movably connected to a resistor installed inside the rail 131, the other side is coupled to the wire 120, the moving terminal is moved along the rail 131 by the deformation of the wire 120 132; And an elastic member 133 which provides the moving terminal 132 with an elastic pressing force for returning the other end of the wire 120 to its initial position at all times.

In addition, the elastic member 133 is installed on the opposite side to the wire 120 on the basis of the mobile terminal 132, one end is coupled to the mobile terminal 132, the other end is the rail 131 It may be a compression spring fixed to the outside.

In addition, the detection sensor 130 may be an on-off switch that is switched from the off state to the on state when the position change of the other end of the wire 120 is greater than or equal to a reference value.

In addition, the controller 140 may determine that a fall risk state occurs when deformation or bending of a reference value or more occurs in the wire 120 installed on the outermost side of the pad member 110 among the plurality of wires 120. Can be.

In addition, the control device 140, the relative speed of the load applied to each of the plurality of wires 120 are compared to derive the moving speed of the user, the derived moving speed is more than the reference value, or to the derived moving speed According to the present invention, if it is calculated that the user is positioned on the wire 120 installed at the outermost side of the pad member 110, it may be determined as a fall danger state.

In addition, the control device 140 may recognize the arm, leg, or body of the user according to a load applied to each of the wires 120 among the plurality of wires 120.

In addition, when it is determined that the fall risk state in the control device 140, the alarm device 150 for generating an alarm sound by receiving a signal of the control device 140 or transmitting a signal to an outsider by wireless or wired; It may be configured to include more.

In addition, if it is determined that the fall risk state in the control device 140, the drive device for receiving a signal from the control device 140, driving a safety device such as a safety bar 11 installed on the side of the bed (10) 12); may be configured to include more.

In addition, the present invention, having an extension length in the vertical direction of the body, senses the information on the amount of deformation of each of the plurality of wires 120 disposed on the pad member 110 at regular intervals in the left and right direction of the body An input unit 141 which receives an input from the sensor 130; According to the signal received from the input unit 141, deformation of more than a reference value occurs in the wire 120 provided on the outermost side of the pad member 110 of the plurality of wires 120, or the plurality of wires ( 120) The moving speed derived by comparing the loads applied to the respective loads is relatively greater than or equal to the reference value, or according to the derived moving speed, the user is placed on the wire 120 installed on the outermost side of the pad member 110 after the reference time. If it is calculated that the location of the controller 143 determines that the fall risk state; And an alarm unit 144 outputting a control signal to an alarm device 150 that generates an alarm sound or transmits a signal wirelessly or wired to an outsider when it is determined that the controller 143 is in danger of falling. The fall detection control device 140 is another technical gist.

Here, the converter 142 for converting the analog signal input from the input unit 141 into a digital signal may be further included.

In addition, the present invention, the load detection step (S1) for detecting the amount of deformation of each of the plurality of wires 120 are arranged at regular intervals in the left and right direction of the body and flexibly bent by the load (S1); A data conversion step (S2) of converting the analog signal detected in the load detection step (S1) into a digital value; After receiving the digitized data through the data conversion step (S2) to calculate the position or moving speed of the user, whether the deformation of more than a reference value occurs in the wire 120, the outermost of the plurality of wires 120 Position checking step (S3) to confirm; If it is confirmed in the positioning step (S3) that the current position of the user is not the wire 120 is installed on the outermost side, the moving speed of the user is compared by comparing the acceleration and decrease of the load on each of the plurality of wires 120 A speed calculation step (S4-1) for calculating; If the moving speed calculated in the speed calculation step (S4-1) is greater than or equal to the reference value, a position prediction step of predicting whether the user is located on the wire 120 installed on the outermost side after the reference time if the current moving speed is maintained (S4-). 2); And the wire 120 in which the current location of the user is installed at the outermost side in the positioning step S3, or the wire is installed at the outermost location after the reference time in the location prediction step S4-2. If it is predicted to (120), the fall fall determination method comprising a fall determination step (S5) to determine the fall risk state as another technical gist.

The present invention by the above-described configuration, by placing a wire having a length in the longitudinal direction on the pad member spaced apart in the horizontal direction, by the simple configuration of coupling the sensor to the free end of the wire, There is an effect that it is possible to quickly determine the position, movement, and falling state to inform the surroundings.

In addition, by implementing a pad form, it is possible to use comfortably and safely without restraining the patient psychologically and physically, such as a safety bar and a wearing sensor. If you can place anywhere, you can easily install.

In addition, in the implementation of the pad form, by using a wire member that is flexed flexibly by a load, without having to configure a large number of sensors complexly throughout the pad member, a simple structure and low cost of the patient lying on the alarm pad There is an effect that data about position and movement can be obtained easily and precisely.

Fig. 1-Schematic diagram of a married couple showing an alarm pad for detecting a fall image according to an embodiment of the present invention.
2 is a perspective view showing various embodiments of applying a potentiometer as a sensor
3 is a perspective view showing an example installed on the bed having a safety bar drive device
4 is a conceptual diagram showing the configuration of a control device for detecting a falling bed according to an embodiment of the present invention
5 is a flowchart illustrating a method of determining a fall image according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic perspective view of a soothing fall detection alarm pad according to an embodiment of the present invention, Figure 2 (a), (b) is a perspective view showing various embodiments of applying a potentiometer as a sensor. .

Referring to FIG. 1, an alarm pad for detecting a fall of a bed according to an exemplary embodiment of the present invention includes a pad member 110, a plurality of wires 120, a detection sensor 130, and a control device 140.

The pad member 110 is made of a material that is flexibly deformed by load, such as a fiber material, a thin synthetic resin material, and the like, and has a planar structure that can be spread on a bed or a floor. If it is possible to implement the function as a rug like this is not limited to a specific configuration and form.

The plurality of wires 120 are formed of a material flexibly bent by a load such as a fiber material, a metal material is installed on the pad member 110, and has an extension length in the vertical direction of the body, It is arranged at regular intervals in the left and right directions.

When the patient lays down the pad member 110 from the upper side, each of the plurality of wires 120 is bent downward in proportion to the load (body weight, body weight of the patient) applied to each of the wires 120. The deformation amount becomes large.

In order to stably prevent the wire 120 from bending in the lateral direction due to any pressing force other than the weight of the patient lying on the pad member 110, a part of the pad member 110 may be arbitrarily folded or It is desirable to keep the shape constant without sagging.

In installing an alarm fall detection alarm pad according to an embodiment of the present invention, when the pad member 110 is in the shape of a quadrangle, the pad member is fixed at a predetermined position at which the corner is formed. By fixing a part of the edge circumference of the 110 to a predetermined position, the shape of the pad member 110 can be kept constant.

In another embodiment, in the direction parallel to the extending direction of the wire 120 (up and down longitudinal direction of the body) and in the direction (crosswise to the left and right direction of the body) to cross both ends of the plurality of wires 120 in succession. When a plurality of frames (not shown) having an extended length are continuously installed around the pad member 110, the pad member may be removed without a separate fixing operation for maintaining a constant shape of the pad member 110. The shape of the 110 can be kept constant.

In another embodiment, on the pad member 110, a guide member (not shown) for guiding each of the plurality of wires 120 in the vertical direction of the body, left and right, or circumference of each of the wires 120 By installing in, the plurality of wires 120 can be stably prevented from being bent by any pressing force.

One end of the wire 120 is fixedly installed on the pad member 110, and when each of the wires 120 is bent in proportion to the load, each of the wires 120 is proportional to the amount of deformation (bending degree). The other end of the position is moved.

The sensor 130 is connected to the other end of the wire 120, generates a signal according to the position change of the other end of the wire 120, the position of the other end of the wire 120, the wire If it is possible to implement the deformation detection function of the 120 and the like is not limited to a specific configuration, form, specification.

As the detection sensor 130, a potentiometer 130a for continuously changing an electric resistance value according to a change in position of the other end of the wire 120, or a change in position of the other end of the wire 120 is equal to or greater than a reference value. Various embodiments may be applied, including an on-off switch (not shown) and the like, which are switched from the off state to the on state.

The potentiometer 130a is a variable resistor that can change an electric resistance value continuously or stepwise. The potentiometer 130a has a defect capable of moving with respect to a resistor as one terminal and the other end of the resistor. By changing the range between the terminals, the operating principle of changing the resistance value is realized.

Referring to FIGS. 2A and 2B, the potentiometer 130a includes a rail 131, a mobile terminal 132, and an elastic member 133, as shown in FIG. 2A. As shown in FIG. 2, a straight line may be moved while contacting the resistor, and as shown in FIG.

The rail 131 is a component that guides the position movement of the other end of the wire 120 to a specific path, and is a straight open slit (not shown) as shown in FIG. 2A, or FIG. 2. It can be implemented in various embodiments, including an embodiment having a circular open slit (not shown) as shown in (b), an embodiment formed of a tube (not shown), and the like.

The mobile terminal 132, one side is movably connected to a resistor (not shown) installed inside the rail 131, the other side is coupled to the wire 120, the tension of the wire 120 As a result, the wire 120 moves along the rail 131 as much as the deformation amount of the wire 120 (displacement of the other end of the wire 120).

As shown in (a) and (b) of FIG. 2, when the rail 131 has an open slit, the mobile terminal 132 has the other side protruding out of the open slit of the rail 131. The other end of the wire 120 is bound and fixed on the protruding other side of the mobile terminal 132.

The elastic member 133 is a component that constantly gives the moving terminal 132 an elastic pressing force for returning the other end of the wire 120 to an initial position (a position before being moved under pressure). It may be composed of a compression spring as shown in 2 (a), or a spiral spring as shown in (b) of FIG.

Referring to FIG. 2A, the compression spring (the elastic member 133) is installed on the side opposite to the wire 120 based on the mobile terminal 132, and one end thereof is the mobile terminal 132. ), And the other end is fixed to the outside of the rail 131, the elastic terminal for restoring the other end of the wire 120 to the initial position is always given to the mobile terminal 132.

Referring to FIG. 2B, the spiral spring (the elastic member 133) has a form in which a metal having strong elasticity is rolled up, and as in the compression spring, based on the mobile terminal 132. It is installed on the opposite side to the wire 120, one end is coupled to the mobile terminal 132, the other end is fixed to the outside or inside the rail 131.

When the user lies on the bed on which the alarm pad 100 is laid, the wire 120 is bent and deformed under tension by the user's weight, and the resistance of the potentiometer 130a to which the wire 120 is connected is changed or The on / off switch can be activated to detect the user's position and movement.

According to an embodiment of the present invention, the needle fall detection alarm pad has a thin pad shape, and thus, the structure and size of the detection sensor 130 may be as simple and compact as possible.

The control device 140 is a component for determining a fall risk state by calculating a position or a moving speed of a user (patient) by receiving a signal from the detection sensor 130, which is simply located at the edge of the user. In this case, it can be judged as a fall risk state.

In determining the danger of falling from the position of the user, if the deformation occurs more than the reference value in the wire 120 installed on the outermost side of the pad member 110 of the plurality of wires 120, the user is the pad member Since it is located at the edge of the 110, it can be determined that the fall risk state.

In determining the risk of falling from the user's moving speed, the moving speed of the user may be derived by comparing the added and subtracted loads of each of the plurality of wires 120 and the derived moving speed is greater than or equal to the reference value. According to the derived moving speed, if it is calculated that the user is positioned on the wire 120 installed at the outermost side of the pad member 110 after the reference time, it may be determined as a fall danger state.

Among the plurality of wires 120, the load on one of the wires 120 is greater than or equal to the upper limit reference value (for example, 50 kg), and then suddenly decreases below the lower limit reference value (for example, 20 kg), and any time ( For example, after 0.5 seconds), if the load on the other adjacent wire 120 is more than the upper limit reference value, the distance between the wires 120 divided by the time required to move the load to the user's moving speed Can be derived.

In setting the reference value for the movement speed, if it is determined that the speed is difficult to be generated by natural movement in the bed, or if the braking distance extends to the outside of the pad member 110 even if the user stops suddenly, the reference movement value is used as the reference value. If it is set to, for example, 5 m / s, it can be determined that the fall risk state when the derived moving speed is more than the reference value.

In addition, the control device 140, according to the load applied to each of the wires 120 of the plurality of wires 120, by classifying the arm, leg, or body of the user (for example, the user weight When 70kg, the body 40kg, arm 5kg, leg 10kg is set as a reference value, when the load on the wire 120 is 5kg, it can be determined as the whole arm or part of the leg).

3 (a) and 3 (b) are perspective views showing an example installed on a needle bed having a safety bar drive device.

Referring to (a) and (b) of FIG. 3, in installing a safety device that can prevent a fall of a user, such as a safety bar 11, on the side of the couch 10, the safety bar 11 is provided. A driving device 12 capable of automatically moving up and down is provided, and may be configured to receive and drive a signal from the control device 140.

As shown in (a) of FIG. 3, even when the safety bar 11 is normally lowered to the lower side of the bed 10, when it is determined that the fall of the dangerous state by the control device 140 is illustrated in FIG. 3. As shown in (b), by transmitting the control signal for driving the safety bar 11 up to the drive device 12, by moving the safety bar 11 up, the bed of the user of the risk of falling (10) The departure to the outside can be prevented safely.

In addition, when it is determined that the fall risk state in the control device 140, and receives the signal of the control device 140 is provided with an alarm device for generating an alarm sound or transmitting a signal wirelessly or wired to an outsider. If so, a caregiver or the like can quickly detect and cope with the user's dangerous condition.

By the configuration as described above, it is possible to output a control signal from the control device 140 according to the range of the moving speed of the user, by analyzing the signal output from each of the wires 120, the fall risk state In addition to the determination, the user's sleep pattern, movement pattern, behavior pattern, and the like may be grasped.

4 is a conceptual diagram illustrating a configuration of a control device for detecting a falling bed in accordance with an embodiment of the present invention.

Referring to FIG. 4, the control apparatus for couch fall detection according to an embodiment of the present invention includes an input unit 141 that receives information on deformation amounts of the plurality of wires 120 from the sensing sensor 130. The controller 143 determines a fall risk state according to a signal received from the input unit 141, and an alarm unit that outputs a control signal to the alarm device 150 when the controller 143 determines that the fall risk state falls. 144).

The control unit 143, the deformation of more than a reference value occurs in the wire 120 provided on the outermost side of the pad member 110 of the plurality of wires 120, the user's moving speed is more than the reference value, or If it is calculated that the user is located on the wire 120 installed on the outermost side of the pad member 110 after time, it is determined as a fall risk state.

When the potentiometer is used as the detection sensor 130, the resistance change according to the load change is detected as an analog signal. After amplifying the analog signal input to the input unit 141 with an amplifier, the analog signal is converted into a digital signal. When the converter 142 converts the signal into a digital signal, the controller 143 transmits the signal to the controller 143 through noise filtering, so that the controller 143 can more accurately determine the possibility of a fall and the degree of danger. .

In the case of using the on-off switch, it is possible to perform a function of detecting a risk of falling and alarming by simply determining whether a load greater than a specified value is applied to the wire 120 adjacent to the outermost or outermost side.

5 is a flowchart illustrating a method of determining a fall image according to an embodiment of the present invention.

Referring to Figure 5, the bed fall determination method according to an embodiment of the present invention, load detection step (S1), data conversion step (S2), positioning step (S3), speed calculation step (S4-1), Position prediction step (S4-2), fall determination step (S5).

In the load sensing step S1, the deformation amount of each of the plurality of wires 120 is detected by the detection sensor 130, and in the data switching step S2, the analog signal detected in the load sensing step S1 is detected. Switch to a digital value (it can be omitted if the detection sensor 130 is an on-off switch).

In the positioning step (S3), while receiving the digitized data through the data conversion step (S2) to calculate the position or moving speed of the user, of the plurality of wires (120), the outermost wire ( 120, check whether deformation above the reference value occurs.

If it is confirmed in the positioning step (S3) that the current position of the user is not the wire 120 is installed on the outermost side, enter the speed calculation step (S4-1), which is caught by each of the plurality of wires 120 Calculate the user's moving speed by comparing loads with or without relative loads.

In the position prediction step (S4-2), if the moving speed calculated in the speed calculation step (S4-1) is greater than or equal to the reference value, if the current moving speed is maintained, the user is placed on the wire 120 installed on the outermost side after the reference time. Predict if is located.

In the fall determination step (S5), it is determined whether or not the fall risk state, in the positioning step (S3) it is confirmed that the current position of the user is the wire 120 is installed on the outermost, or the position prediction step (S4) In step -2), if it is predicted that the user's position after the reference time is the wire 120 installed at the outermost side, it is determined as a fall risk state.

According to the alarm pad for detecting a fall image, the control device and the bed fall determination method using the same according to an embodiment of the present invention having the configuration as described above, the pad member 110 has an extension length in the vertical direction By placing the wire 120 spaced apart in the horizontal direction, and coupled to the free sensor of the wire 120 to the sensor 130, the position of the patient, the movement, the fall state can be quickly determined, You can inform around.

In addition, since it can be implemented in the form of a pad, it can be used comfortably and safely without restraining the patient psychologically and physically like the safety bar 11, as well as the bed 10, the ondol floor of a typical home, the upper surface of the existing pad, etc. You can easily install it anywhere you can spread the pads.

In addition, in the implementation of the pad form, by using a wire member that is flexed flexibly by a load, without having to configure a large number of sensors complexly throughout the pad member, a simple structure and low cost of the patient lying on the alarm pad Data about position and movement can be obtained easily and precisely.

The present invention has been described with reference to preferred embodiments of the present invention, but the present invention is not limited to these embodiments, and the embodiments of the present invention are combined with the embodiments of the present invention. In the description it should be seen that the techniques that can be used by those skilled in the art to which the present invention pertains are naturally included in the technical scope of the present invention.

10: couch 11: safety bar
12: drive device 100: alarm pad
110: pad member 120: wire
130: detection sensor 130a: potentiometer
131: rail 132: mobile terminal
133: elastic member 140: control device
141: input unit 142: converter unit
143: control unit 144: alarm unit
150: alarm device S1: load detection step
S2: data conversion step S3: location checking step
S4-1: Speed calculation step S4-2: Position prediction step
S5: Fall judgment phase

Claims (13)

Pad member 110;
It is composed of a material flexibly bent by the load is installed on the pad member 110, has an extended length in the vertical direction of the body, is arranged at regular intervals in the left and right direction of the body, one end fixed installation A plurality of wires 120;
A sensing sensor 130 connected to the other end of the wire 120 and generating a signal according to a change in position of the other end of the wire 120; And
A control device 140 that receives a signal from the sensor 130 to calculate a user's position or moving speed and determines a fall risk state;
Couch fall detection alarm pad, characterized in that configured to include a.
The method of claim 1, wherein the detection sensor 130,
The bed fall detection alarm pad 100, characterized in that the potentiometer (130a) for continuously changing the electrical resistance value in accordance with the position change of the other end of the wire (120).
The method of claim 2, wherein the potentiometer 130a,
Straight or circular rail 131;
One side is movably connected to a resistor installed inside the rail 131, the other side is coupled to the wire 120, the moving terminal is moved along the rail 131 by the deformation of the wire 120 132; And
An elastic member 133 which provides the moving terminal 132 with an elastic pressing force for returning the other end of the wire 120 to an initial position at all times;
Couch fall detection alarm pad, characterized in that configured to include a.
The method of claim 3, wherein the elastic member 133,
It is installed on the opposite side to the wire 120 based on the mobile terminal 132, one end is coupled to the mobile terminal 132, the other end is characterized in that the compression spring is fixed to the outside of the rail 131 Alarm pad 100 for detecting the falling bed.
The method of claim 1, wherein the detection sensor 130,
When the change in position of the other end of the wire 120 is more than the reference value couch alarm detection pad 100 characterized in that the on-off switch is switched from the off state to the on state.
The method of claim 1, wherein the control device 140,
Falling bed alarm detection pad 100, characterized in that it is determined that the fall risk state when the deformation of the wire 120, which is installed on the outermost side of the pad member 110 of the plurality of wires 120 or more. ).
The method of claim 1, wherein the control device 140,
The relative speed of the load on each of the plurality of wires 120 is compared to derive a moving speed of the user, and the derived moving speed is greater than or equal to the reference value, or according to the derived moving speed, the pad member 110 after the reference time. When the user is located on the wire 120 is installed on the outermost side of the couch fall detection alarm pad, characterized in that it is determined that the fall risk state.
The method of claim 1, wherein the control device 140,
Of the plurality of wires 120, according to the load applied to each of the wires 120, a bed fall detection alarm pad for detecting the fall, characterized in that to recognize the user's arm, leg, or body.
The method of claim 1,
When the control device 140 determines that the fall risk state, the alarm device 150 for receiving a signal from the control device 140 to generate an alarm sound or to transmit a signal to the outsider by wireless or wired;
Couch fall detection alarm pad, characterized in that further comprises a.
The method of claim 1,
When the control device 140 determines that the fall danger state, the drive device 12 for receiving a signal from the control device 140 to drive a safety device such as a safety bar 11 installed on the side of the bed (10) ;
Couch fall detection alarm pad, characterized in that further comprises a.
Input information about the amount of deformation of each of the plurality of wires 120 disposed on the pad member 110 at regular intervals in the left and right direction of the body having an extended length in the vertical direction of the body from the sensor 130 Receiving input unit 141;
According to the signal received from the input unit 141, deformation of more than a reference value occurs in the wire 120 provided on the outermost side of the pad member 110 of the plurality of wires 120, or the plurality of wires ( 120) The moving speed derived by comparing the loads applied to the respective loads is relatively greater than or equal to the reference value, or according to the derived moving speed, the user is placed on the wire 120 installed on the outermost side of the pad member 110 after the reference time. If it is calculated that the location of the controller 143 determines that the fall risk state; And
An alarm unit 144 for outputting a control signal to an alarm device 150 that generates an alarm sound or transmits a signal wirelessly or by wire to an outsider when it is determined that the controller 143 is in danger of falling;
Bed fall detection control device 140, characterized in that comprising a.
The method of claim 11,
A converter unit 142 for converting an analog signal input from the input unit 141 into a digital signal;
A bed fall detection control device 140, characterized in that further comprises a.
A load sensing step (S1) of detecting a deformation amount of each of the plurality of wires 120 that are arranged at regular intervals in the left and right directions of the body and flexibly bent by a load;
A data conversion step (S2) of converting the analog signal detected in the load detection step (S1) into a digital value;
After receiving the digitized data through the data conversion step (S2) to calculate the position or moving speed of the user, whether the deformation of more than a reference value occurs in the wire 120, the outermost of the plurality of wires 120 Position checking step (S3) to confirm;
If it is confirmed in the positioning step (S3) that the current position of the user is not the wire 120 is installed on the outermost side, the moving speed of the user is compared by comparing the acceleration and decrease of the load on each of the plurality of wires 120 A speed calculation step (S4-1) for calculating;
If the moving speed calculated in the speed calculation step (S4-1) is greater than or equal to the reference value, a position prediction step of predicting whether the user is located on the wire 120 installed on the outermost side after the reference time if the current moving speed is maintained (S4-). 2); And
In the positioning step (S3) it is confirmed that the current position of the user is the wire 120 is installed on the outermost side, or in the position prediction step (S4-2) after the reference time the location of the user of the wire ( 120, the fall determination step (S5) to determine the fall risk state;
A couch fall determination method, characterized in that comprising a.

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