KR102581016B1 - Apparatus and method to assist in CPR - Google Patents

Abstract

The present invention relates to a CPR training assist device.
The control method of the CPR assist device according to an embodiment of the present invention includes, as a CPR user presses the compression unit, a first detection unit provided in the compression unit and a second detection unit provided in a reference unit spaced apart from the compression unit. acquiring acceleration or posture data; A control unit distinguishing between a valid section within an activation reference value range and an invalid section outside the activation reference value range among the acquired data; And after the control unit extracts only data that occurred during the effective section among the movement distance data, it includes a step of determining a compression depth, which is a relative vertical movement distance of the compression unit, based on the reference unit.

Description

Apparatus and method to assist in CPR}

The present invention relates to a device and method for assisting CPR. More specifically, the present invention relates to a device and method for assisting CPR. More specifically, it can be used for CPR training by providing immediate feedback on the CPR performance situation to the user, and can be used for CPR training even by those who have not received sufficient training in CPR. The goal is to provide a CPR assist device that can easily perform first aid on site.

Cardio-pulmonary resuscitation (CPR) is an emergency treatment used when the heart stops functioning or breathing stops. In the case of a heart attack, death or serious brain damage can occur if action is not taken quickly, so it is necessary for a witness who finds the patient to quickly perform CPR. Accordingly, each country is educating the general public on CPR and organizing and distributing the necessary rules of conduct.
Korean Patent Publication No. 10-2116906 (announcement date 2020.5.29) discloses a device that assists CPR training using pressure information.

Nevertheless, because most people have insufficient training in CPR, cardiac arrest patients who could have survived are losing their lives. Therefore, from the educational institution's point of view, it is necessary to check the trainee's proficiency, and from the trainee's point of view, a device is needed to increase the effectiveness of training by providing immediate feedback on whether the trainee is performing CPR according to the standards.

Additionally, in actual emergency situations, there is a need for a device that assists even those who have not received CPR training to actively perform CPR.

First, the problem that the present invention aims to solve is to provide an auxiliary device that provides immediate feedback on the CPR performance status so that even people who have not received sufficient training in CPR can easily perform first aid in the field.

Second, another task of the present invention is to provide CPR trainees and instructors with accurate feedback on the degree of CPR performance.

Third, it provides an auxiliary device that can automatically measure compression depth and compression speed while minimizing errors.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, a CPR assist device according to an embodiment of the present invention includes a compression unit with a built-in first detection unit that measures acceleration according to a user's pressure; a reference unit arranged to be spaced apart from the pressing unit and having a built-in second detection unit that measures acceleration according to a user's pressure; A connection part connecting the compression unit and the reference unit so that the compression unit and the reference unit can move at different accelerations as the user presses them; and a control unit that determines the compression depth of the compression unit based on data from the first and second detection units.
In addition, the CPR assist device according to an embodiment of the present invention includes a compression unit with a built-in first detection unit that measures acceleration according to the user's pressure; a reference unit arranged to be spaced apart from the pressing unit and having a built-in second detection unit that measures acceleration according to a user's pressure; A connection part connecting the compression unit and the reference unit so that the compression unit and the reference unit can move at different angles with respect to a horizontal plane as the user presses them; and a control unit that determines the compression depth of the compression unit based on data from the first detection unit and the second detection unit.

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Specific details of other embodiments are included in the detailed description and drawings.

According to the CPR assist device and training system using the same of the present invention, one or more of the following effects are achieved.

First, by providing immediate feedback on the CPR performance status, even those who have not received sufficient training in CPR can easily perform first aid on site.

Second, it has the advantage of providing accurate feedback on the degree of CPR performance to CPR trainees and instructors.

Third, it provides an auxiliary device that can automatically measure compression depth and compression speed while minimizing errors.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Figure 1 is a perspective view of a CPR assist device according to an embodiment of the present invention.
Figure 2 is a plan view of a CPR assist device according to an embodiment of the present invention.
Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2.
Figure 4 is an exploded perspective view of a CPR assist device according to an embodiment of the present invention.
Figure 5 is a diagram for explaining a method of estimating the posture of a CPR assist device according to an embodiment of the present invention.
Figure 6a is a diagram for explaining how the CPR assist device according to an embodiment of the present invention processes acceleration data.
Figure 6b is a diagram for explaining a method of determining a vector formed by acceleration data of a CPR assist device according to an embodiment of the present invention.
Figure 7 is a flowchart showing how the CPR assist device according to an embodiment of the present invention provides feedback to a first responder in an actual emergency situation.
Figure 8 is a flowchart showing how the CPR assist device according to an embodiment of the present invention provides feedback to trainees during the training process.
Figure 9 shows the activity reference value according to an embodiment of the present invention.
Figure 10 is a flowchart showing how the CPR assist device according to an embodiment of the present invention determines the vertical movement distance of the compression unit.
Figure 11 is a flowchart showing another method of determining the vertical movement distance of the compression unit by the CPR assist device according to an embodiment of the present invention.
Figure 12 is a flowchart showing a method of determining the compression depth of the compression unit by the CPR assist device according to an embodiment of the present invention.
Figure 13 is a diagram explaining the method according to Figures 10 and 12.
Figure 14 is a diagram explaining the method according to Figure 11.
Figure 15 is a diagram showing a method of determining a moving distance using data from the first and second detectors according to an embodiment of the present invention.
Figure 16 is a block diagram of a CPR assist device according to an embodiment of the present invention.
Figure 17 is a block diagram of a CPR assist device according to another embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining the CPR assist device 1 according to embodiments of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the CPR assist device 1 according to the present invention will be described with reference to the drawings.

Figure 1 is a perspective view of a CPR assist device 1 according to an embodiment of the present invention. Figure 2 is a plan view of the CPR assist device 1 according to an embodiment of the present invention. Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2. Figure 4 is an exploded perspective view of the CPR assist device 1 according to an embodiment of the present invention. Figure 5 is a diagram for explaining a method of estimating the posture of the CPR assist device 1 according to an embodiment of the present invention.

Referring to Figures 1 to 5, the CPR assist device 1 according to an embodiment of the present invention includes a compression unit 100 with a built-in first detection unit 110 that measures acceleration according to the user's pressure. ; A reference unit 200 arranged to be spaced apart from the compression unit 100 and having a built-in second detection unit 210 that measures acceleration according to the user's pressure; A connecting portion (5) connecting the compression portion 100 and the reference portion 200 so that the compression portion 100 and the reference portion 200 can move at different accelerations as the user presses them; and a control unit 51 that determines the compression depth of the compression unit 100 from the data of the first detection unit 110 and the second detection unit 210.

The first detection unit 110 is built into the compression unit 100. The compression unit 100 is a part that is pressed by hand when performing CPR. The compression unit 100 is marked with a scale so that it is located at the exact center of the line connecting both nipples.

The second detection unit 210 is disposed on the reference unit 200. The reference unit 200 is arranged to be spaced apart from the compression unit 100. The reference unit 200 is preferably disposed in the direction of the neck to minimize the influence of the pressure unit 100 moving up and down. The reference unit 200 may move in the vertical direction or its angle may change due to the vertical movement of the compression unit 100.

The first detection unit 110 and the second detection unit 210 may commonly include an acceleration sensor. The first detection unit 110 and the second detection unit 210 may be an inertial measurement unit (IMU) that combines a 3-axis acceleration and 3-axis gyro sensor and then sends the output of each sensor. The first sensing unit 110 includes a pressure sensor 130, which will be described later.

The control unit 51 determines the compression depth of the compression unit 100 from the data of the first detection unit 110 and the second detection unit 210.

Since the user (a concept that includes trainees and first responders) applies strong pressure to the compression unit 100, the compression unit 100 moves in an upward and downward direction (vertical direction).

Hereinafter, for convenience of explanation, compression depth and vertical movement distance are described separately, but the inclusion of the movement distance in the z-axis direction is the same.

The connection portion 5 is connected so that the mutually spaced lengths of the compression portion 100 and the reference portion 200 are maintained. The connection portion 5 may be formed as part of a cover that integrally packages the compression portion 100 and the reference portion 200.

The connection portion 5 and the compression portion 100 are spaced apart from each other and may be formed of a material that can be bent but does not increase in length. For example, the connecting portion 5 may be made of silicone.

A CPR assist device (1) according to an embodiment of the present invention includes a compression unit (100) with a built-in first detection unit (110) that measures acceleration according to a user's pressure; A reference unit 200 arranged to be spaced apart from the compression unit 100 and having a built-in second detection unit 210 that measures acceleration according to the user's pressure; A connecting portion 5 connecting the compression portion 100 and the reference portion 200 so that the compression portion 100 and the reference portion 200 can move at different angles relative to the horizontal plane as the user presses them; and a control unit 51 that determines the compression depth of the compression unit 100 from the data of the first detection unit 110 and the second detection unit 210.

The compression unit 100 may be assumed to be in a horizontal state. The reference portion 200 is disposed in the neck direction, so that the vertical movement of the end in the neck direction may be relatively limited. The point where the reference unit 200 is connected to the connection unit 5 may move vertically according to a change in the height of the compression unit 100. Accordingly, the angle of the compression unit 100 may be changed based on the horizontal plane.

The control unit 51 may determine the angle using the posture data measured by the second detection unit 210.

The connection unit 5 connects the compression unit 100 and the reference unit 200 so that the compression unit 100 and the reference unit 200 can move at different accelerations.

The reference unit 200 serves as a means to accurately measure the height change (vertical movement distance, compression depth) of the compression unit 100 and eliminate errors.

The connecting portions 5 can be bent but maintain a mutually spaced distance. The connection portion 5 is bendable to allow the angle of the compression portion 100 to be changed.

The separation distance (L) between the compression unit 100 and the reference unit 200 is based on a straight line passing through the first detection unit 110 and the second detection unit 210, and the connection unit 5 and the compression unit 100 ) is the length between one end, which is the point that intersects the connection point, and the other end, which is the point that intersects the free end of the pressure portion (100).

A PCB board may be built into the pressing part 100, and a display board, which will be described later, is mounted on the reference part 200. That is, the compression portion 100 and the reference portion 200 are relatively less flexible, but the connection portion 5 is formed of a flexible material (it is desirable to use a material that allows bending but has a small change in length), so the compression portion (100 ) and the reference unit 200 may be located at different heights. This feature allows the compression unit 100 and the reference unit 200 to be in close contact with the body, and the pressure of the compression unit 100 is determined through different data from the first detection unit 110 and the second detection unit 210. It has the effect of accurately judging depth. However, hinges may be placed at both ends of the connection portion (5). In other words, a person skilled in the art may change both ends of the connection portion 5 to a structure capable of pivoting movement.

In the CPR assist device 1 according to an embodiment of the present invention, a cable 3 for transmitting data of the compression unit 100 or the reference unit 200 is built into the connection unit 5.

The cable 3 is preferably made of a flexible material, and may be made of, for example, a flexible printed circuit board (FPCB).

The CPR assist device 1 according to an embodiment of the present invention includes a heart rate sensor 300 that measures heartbeat, and the control unit 51 determines whether or not data is transmitted from the heart rate sensor 300, If heart rate data is transmitted, a CPR success message is output based on the judgment result based on the heart rate data. If heart rate data is not transmitted, a CPR success message is output based on accumulated data on the compression depth of the compression unit 100. .

The heart rate sensor 300 may be a photoplethysmography (PPG) sensor or an electrocardiogram sensor.

When data is transmitted from the PPG sensor (meaning meaningful data), the control unit 51 determines that it was used on an actual person and determines it to be an actual emergency situation. In this case, if the judgment result based on the data from the PPG sensor reaches a normal heart rate, a CPR success message is output.

If data is not transmitted from the PPG sensor (meaning meaningless data), the control unit 51 may determine that it is being used for the mannequin. In this case, the control unit 51 may determine it to be a training situation or an education situation. If the control unit 51 determines that it is a training situation, it continues to monitor the training situation until it reaches a predetermined standard.

The user can also set the CPR assist device 1 by directly determining whether it is a training situation or an actual emergency.

Figure 6a is a diagram for explaining how the CPR assist device 1 according to an embodiment of the present invention processes acceleration data.

Referring to Figure 6a, the control unit 51 can obtain acceleration data in the X, Y, and Z directions. Acceleration data varies depending on the user's pressure state.

The control unit 51 may sample (11) the acceleration data of the control unit 51 at predetermined time intervals. For example, the sampling period (11) may be 10 ms, 20 ms, or 50 ms, but is not limited thereto. At this time, if the acquisition time of the sample 11 is not constant due to the hardware characteristics of the first detection unit 110 and the second detection unit 210, the control unit 51 performs an interpolation method on the acquired sample 11. ) can be applied to estimate the value of the sample 11 that can be obtained in the sampling cycle 11.

The control unit 51 may acquire a plurality of data in directions orthogonal to each other at one sampling point 11. For example, the control unit 51 may acquire acceleration data in the X, Y, and Z axes.

The control unit 51 may determine a predetermined number of consecutive samples 11 as one section. One section may include, but is not limited to, 64, 128 or 256 samples 11. A section may refer to samples 11 acquired during one time period in which a single compression state is extracted.

Figure 6b is a diagram for explaining a method of determining the vector 27 formed by acceleration data of the CPR assist device 1 according to an embodiment of the present invention.

Referring to Figure 6b, the vector 27 corresponding to one section is a vector formed by the X-axis data 21, Y-axis data 23, and Z-axis data 25 constituting one sample 11 ( 27).

The control unit 51 may determine a vector 27 corresponding to each section. Additionally, the control unit 51 may determine the user's compression state based on the characteristics of the vector 27. Characteristics of vector 27 may include, but are not limited to, the magnitude, frequency, standard deviation, or energy of vector 27.

Figure 7 is a flow chart showing how the CPR assist device 1 according to an embodiment of the present invention provides feedback to a first responder in an actual emergency situation. Figure 8 is a flowchart showing how the CPR assist device 1 according to an embodiment of the present invention provides feedback to trainees during the training process.

Referring to FIGS. 7, 8, and again to FIG. 6A, the CPR assist device 1 according to an embodiment of the present invention is a compression device with a built-in first detection unit 110 that measures the acceleration according to the user's pressure. wealth(100); A reference unit 200 with a built-in second detection unit 210 that measures acceleration according to the user's pressure; And among the acquired data, a valid section 13 that exists within the active reference value range and an invalid section 15 outside the active reference value range are distinguished, and during the valid section 13, the first detection unit 110 and the second detection unit ( It includes a control unit 51 that determines the compression depth of the compression unit 100 from the data of 210).

The control unit 51 may determine that the data in the valid section 13 is a section in which the user is performing CPR, and the data in the invalid section 15 may determine the data in the invalid section 15 to be a section in which the user is stopping CPR. The control unit 51 determines the compression depth based on data during the effective section 13.

If the compression depth of the compression unit 100 is greater than or equal to the reference value, the control unit 51 determines that the compression is successful, counts the cumulative number of compressions, and cumulatively counts the time of the effective section.

The control unit 51 determines the compression depth by accumulating and integrating the sample 11 value of the effective section 13. If the compression depth is lower than the reference value, for example, if the result value integrated through acceleration data is more than 5 cm, the control unit 51 determines that the compression is successful and increases the number of compressions by one. The control unit 51 accumulates the time of the effective section 13 (for example, 0.4 s) as the time of the effective section 13.

The control unit 51 determines the average compression speed based on the time elapsed from the first compression and the cumulative number of compressions.

If 2 minutes have passed since the first compression and the cumulative number of compressions is 100, the number of compressions becomes 50 per minute. If 3 minutes have passed since the first compression and the cumulative number of compressions is 360, the number of compressions is 120.

The CPR assist device 1 according to an embodiment of the present invention includes a heart rate sensor 300 that measures heartbeat, and the control unit 51 determines whether or not data is transmitted from the heart rate sensor 300, When heart rate data is transmitted, it is determined whether the normal heart rate has been reached based on the data measured from the heart rate sensor 300. If the normal heart rate is reached, a CPR success message is output. If the heart rate data is not transmitted, the cumulative number of compressions and compression average are displayed. When the number of times exceeds the predetermined normal value, a CPR success message is output.

When heart rate data is transmitted, the control unit 51 determines the actual situation and displays a compression repetition message or a compression improvement message on the display panel 231 until the heart rate is determined to be normal. If heart rate data is not transmitted, the control unit 51 determines that it is a training situation and displays a compression repetition message or a compression improvement message on the display panel 231 until the compression speed and number of compressions reach a predetermined level or a predetermined time is reached. Display.

In other words, the CPR assist device 1 according to the present invention can be used in both training situations and actual emergency situations.

The control unit 51 determines the per-time compression speed based on the time of the valid section determined to be successful and the time of the immediately preceding invalid section.

If the time of the immediately preceding invalid section is 2 seconds and the time of the valid section 13 in which success was determined at the time is 0.5 seconds, the control unit 51 may determine the compression speed as having been performed once every 2.5 seconds. CPR is a very difficult activity, so the user can rest or stop during first aid, but such rest is very dangerous because the patient's heart stops during this period. Therefore, it is desirable to measure speed in real time and provide feedback to the user.

The CPR assist device 1 according to an embodiment of the present invention includes a display panel 231 that displays a compression repeat message when the current compression speed is above the reference value and displays a compression improvement message when the current compression speed is below the reference value. Includes.

If the per-time compression speed is within the normal range, the control unit 51 outputs a compression repetition message to continue in this state, and if the per-time compression speed is below the normal range, it outputs a warning message to improve the compression speed.

The first detection unit 110 includes a pressure sensor 130, and the control unit 51 determines that one-time compression has ended when the pressure value detected through the pressure sensor 130 exceeds the reference value and then falls below the reference value. Considering this, the first detection unit 110 and the second detection unit 210 are initialized.

It is preferable that the control unit 51 initializes the data of the first detection unit 110 and the second detection unit 210 in order to accurately measure the compression depth. Therefore, the control unit 51 initializes the sensor when it is determined that the user has completed compression once.

The first detection unit 110 includes a pressure sensor 130, and the control unit 51 sets a predetermined pressure value as an activation reference value and compares it with the pressure value obtained from the pressure sensor 130.

It is desirable to set the activation reference value within a predetermined pressure range. If the determined pressure value is too small, the control unit 51 determines it to be an invalid section 15 as compression has not been performed.

Figure 9 shows the activity reference value according to an embodiment of the present invention.

Referring to Figure 9, the control unit 51 sets a predetermined speed value as an activation reference value, integrates the acceleration data, and compares it with the determined speed value to make a decision.

The activation reference value can also be set when it is within a predetermined speed value range. If the determined speed is too small, the control unit 51 determines it to be an invalid section 15 as compression has not been performed.

The control unit 51 may determine both speed and pressure and determine the section 13 to be valid only if both are within the activation reference value range.

Referring again to Figures 7 and 8, if the compression depth of the compression unit 100 is less than the reference value, the control unit 51 determines that the compression has failed and resets the valid section determined to have failed to an invalid section.

Even if the user starts compression by applying sufficient pressure, if the depth is not sufficient, the control unit 51 determines that compression has not been performed and resets the section to an invalid section even if it has already been determined to be a valid section. These measures are a means of increasing the accuracy of compression average speed.

The cardiopulmonary resuscitation assistance device 1 according to an embodiment of the present invention includes a heart rate sensor 300 that measures heartbeat, and the control unit 51 monitors the heart rate based on the data measured from the heart rate sensor 300. After determining whether the normal heart rate has been reached, a CPR success message is output when the normal heart rate is reached.

Figure 10 is a flowchart showing a method of determining the vertical movement distance of the compression unit 100 by the CPR assist device 1 according to an embodiment of the present invention. Figure 11 is a flowchart showing another method of determining the vertical movement distance of the compression unit 100 by the CPR assist device 1 according to an embodiment of the present invention. Figure 12 is a flowchart showing a method of determining the compression depth of the compression unit 100 by the CPR assist device 1 according to an embodiment of the present invention. Figure 13 is a diagram explaining the method according to Figures 10 and 12. Figure 14 is a diagram explaining the method according to Figure 11.

10 to 14, the control unit 51 obtains acceleration data of the compression unit 100 from the first detection unit 110 as the user presses the compression unit 100, and then Determine the vertical movement distance (ds1) of (100).

The control unit 51 obtains acceleration data of the reference unit 200 from the second detection unit 210 as the user presses the compression unit 100, and then obtains the vertical movement distance of the reference unit 200 ( ds2) is determined.

The control unit 51 determines the first compression depth (ds3) of the compression unit 100 based on the difference between the vertical movement distance (ds1) of the compression unit 100 and the vertical movement distance (ds2) of the reference unit 200. ) is determined.

The control unit 51 determines the weight from the ratio of the vertical movement distance ds1 of the compression unit 100 and the vertical movement distance ds2 of the reference unit 200.

The control unit 51 calculates the weight (r) by multiplying the predetermined constant (A) by the ratio of the vertical movement distance (ds1) of the compression unit 100 and the vertical movement distance (ds2) of the reference unit 200. Decide to be greater than 0 and less than 1.

As the user presses the compression unit 100, the control unit 51 acquires the posture data of the reference unit 200 from the second detection unit 210 and determines the first position of the reference unit 200 based on the horizontal plane. After the angle value and unit time, the second angle value is determined.

Referring to Figure 3, the separation distance (L) between the compression unit 100 and the reference unit 200 is based on the straight line passing through the first detection unit 110 and the second detection unit 210, and the connection part ( 5) It is the length between one end that intersects the connection point of the compression portion 100 and the other end that intersects the free end of the compression portion 100. The other end is the fixed point (256). The fixed point 256 is assumed to be fixed without moving in the vertical or horizontal direction.

The control unit 51 determines the second compression depth (dd3) of the compression unit 100 per unit time based on the separation distance (L) between the compression unit 100 and the reference unit 200.

The control unit 51 obtains acceleration data of the compression unit 100 from the first detection unit 110 as the user presses the compression unit 100, and then obtains the vertical movement distance of the compression unit 100 ( ds1) is determined. The control unit 51 obtains acceleration data of the reference unit 200 from the second detection unit 210 as the user presses the compression unit 100, and then obtains the vertical movement distance of the reference unit 200 ( ds2) is determined. The control unit 51 determines the first compression depth (ds3) of the compression unit 100 based on the difference between the vertical movement distance (ds1) of the compression unit 100 and the vertical movement distance (ds2) of the reference unit 200. ) is determined, and the weight (r) is determined from the ratio of the vertical movement distance (ds1) of the compression unit 100 and the vertical movement distance (ds2) of the reference unit 200.

The weight (r) is a factor that determines the ratio between the first compression depth (ds3) and the second compression depth (dd3). The control unit 51 determines the corrected compression depth (dc) using the weight (r).

The control unit 51 determines the corrected compression depth (dc) using the following calculation formula.

Through the above correction, the control unit 51 can determine a more accurate compression depth using weights for dd3 and ds3.

Figure 15 is a diagram showing a method of determining a moving distance using data from the first detection unit 110 and the second detection unit 210 according to an embodiment of the present invention.

Referring to FIG. 15, the control unit 51 can measure vertical depths such as d1 and d2 through acceleration data. For example, the control unit 51 determines a valid section based on data measured by the first sensor (pressure data and/or acceleration data), and determines a vertical movement distance for the determined valid section. The control unit 51 can obtain a sample 11 of the effective section and determine the vertical movement distance upon one compression. The vertical movement distance determined by the control unit 51 may be d1 or d2.

Referring again to FIG. 7, the control method of the CPR assist device 1 according to an embodiment of the present invention is to detect the first sensor provided in the compression unit 100 as the user presses the compression unit 100. Obtaining data from the second detection unit 210 provided on the reference unit 200 spaced apart from the unit 110 and the compression unit 100 and the PPG sensor unit attached to the user (S110); Among the acquired data, a valid section 13 within the active reference value range and an invalid section 15 outside the active reference value range are distinguished, and during the valid section 13, the first detection unit 110 and the second detection unit 210 ) from the data, determining the compression depth of the compression unit 100 (S120); and displaying a CPR success message on the display panel 231 (S130).

The control method of the CPR assist device 1 according to an embodiment of the present invention includes the step of determining that compression is successful (S141); Counting the cumulative number of compressions and the time of the effective section (S143); Determining the average compression speed based on the time elapsed from the first compression and the accumulated number of compressions and determining the per-time compression speed based on the time of the valid section determined to be successful and the time of the immediately preceding invalid section (S145); Displaying a pressure repetition message on the display panel 231 (S147); and initializing the first detection unit 110 and the second detection unit 210 (S160).

The control method of the CPR assist device 1 according to an embodiment of the present invention includes determining compression failure (S151); Resetting the valid section determined to have failed to an invalid section (S153); Displaying a pressure improvement message on the display panel 231 (S157); and initializing the first detection unit 110 and the second detection unit 210 (S160).

The control unit 51 distinguishes between a training situation and an actual emergency situation based on the data input value of the heart rate measuring unit and determines whether the measurement is completed in a different way, displays a message differently, or processes and processes data on the performance level of each trainee. You can decide whether to send it or not.

Referring again to FIG. 8, the control method of the CPR assist device 1 according to an embodiment of the present invention is to detect the first sensor provided in the compression unit 100 as the user presses the compression unit 100. Obtaining data from the second sensing unit 210 provided in the reference unit 200 spaced apart from the unit 110 and the compression unit 100 (S210); Among the acquired data, a valid section 13 within the active reference value range and an invalid section 15 outside the active reference value range are distinguished, and during the valid section 13, the first detection unit 110 and the second detection unit 210 ) from the data, determining the compression depth of the compression unit 100 (S220); and displaying a CPR success message on the display panel 231 (S230).

The control method of the CPR assist device 1 according to an embodiment of the present invention includes the step of determining that compression is successful (S241); Cumulative compression count; Cumulatively counting the time of the valid section (S243); Determining the average compression speed based on the time elapsed from the first compression and the accumulated number of compressions and determining the per-time compression speed based on the time of the valid section determined to be successful and the time of the immediately preceding invalid section (S245); Displaying a pressure repetition message on the display panel 231 (S247); and a step of initializing the first detection unit 110 and the second detection unit 210 (S260).

The control method of the CPR assist device 1 according to an embodiment of the present invention includes determining compression failure (S251); A step of resetting the valid section determined to have failed to an invalid section (S253); It includes displaying a pressure improvement message on the display panel 231 (S257).

Referring again to FIG. 10, the control method of the CPR assist device 1 according to an embodiment of the present invention is that, as the user presses the compression unit 100, the compression unit is sent from the first detection unit 110. Obtaining acceleration data at (100) (S310); and determining the vertical movement distance ds1 of the compression unit 100 from the acceleration data of the first detection unit 110 (S330).

Referring again to Figure 11, the control method of the CPR assist device 1 according to an embodiment of the present invention is that, as the user presses the compression unit 100, the reference unit is sent from the second detection unit 210. Obtaining posture data at (200) (S410); 2 From the posture data of the sensing unit, determining the first angle value of the reference unit 200 and the second angle value after unit time based on the horizontal plane (S430); It includes a step (S450) of determining the vertical movement distance dd of the compression unit 100 per unit time from the distance value between the compression unit 100 and the reference unit 200, the first angle value, and the second angle value.

Referring again to FIG. 12, the control method of the CPR assist device 1 according to an embodiment of the present invention is that, as the user presses the compression unit 100, the compression unit is sent from the first detection unit 110. Obtaining acceleration data of 100, obtaining posture data of the reference unit 200 from the second detection unit 210, and obtaining acceleration data of the reference unit 200 from the second detection unit 210. Step (S510); Obtaining angle value data of the reference unit 200 from the posture data of the second detection unit 210 (S521); It includes a step (S523) of determining the vertical movement distance (dd) of the compression unit 100 from the angle value data of the reference unit 200 and the gap between the reference unit 200 and the compression unit 100.

The control method of the CPR assist device 1 according to an embodiment of the present invention includes the steps of determining the vertical movement distance ds1 of the compression unit 100 from acceleration data of the first detection unit 110; Determining the vertical movement distance ds2 of the reference unit 200 from the acceleration data of the second detection unit 210 (S531); Determining ds3, which is the difference between ds1 and ds2 (S533); It includes a step (S535) of determining the weight r from the ratio of ds1 and ds2, based on ds1.

The control method of the CPR assist device 1 according to an embodiment of the present invention includes the step of adjusting dd and ds3 using weight r and determining the corrected movement distance dc (S550).

Figure 16 is a block diagram of a CPR assist device 1 according to an embodiment of the present invention.

Referring to Figure 16, according to one embodiment, the CPR assist device 1 includes a user input unit, a first detection unit 110, a second detection unit 210, a display unit 230, and a control unit 51. It can be included. However, not all of the illustrated components are essential components. The CPR assist device 1 may be implemented with more components than the components shown, or the CPR assist device 1 may be implemented with fewer components than the illustrated components.

The first detection unit 110 and the second detection unit 210 can measure the acceleration of the CPR assist device (1) (100). The first detection unit 110 and the second detection unit 210 can measure acceleration in the X, Y, and Z axes of the CPR assist device (1) (100).

Figure 17 is a block diagram of a CPR assist device 1 according to another embodiment of the present invention.

Referring to Figure 17, the CPR assist device 1 includes, for example, a mobile phone, tablet PC, PDA, MP3 player, kiosk, electronic picture frame, navigation device, digital TV, smart watch, and wristwatch ( It can be applied in conjunction with various types of devices such as wrist watches, smart glasses, and wearable devices such as HMD (Head-Mounted Display).

The CPR assist device 1 transmits data to a wearable assist device, and the transmitted data may be transmitted back to a server or another person's wearable device. For example, in a training situation, an educator (instructor) can convert the trainee's CPR performance level into data and save it, and notify the trainee of the performance results.

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and can be used in the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the patent claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

Claims (10)

A compression unit including a first detection unit including a pressure sensor and an acceleration sensor, a reference unit including a second detection unit including an acceleration sensor, and a connection unit connecting the compression unit and the reference unit. In the control method of the CPR assist device,
A control unit acquiring pressure data and acceleration data from the first detection unit and acquiring acceleration data from the second detection unit;
A control unit distinguishing between a valid section existing within an active reference value range - a predetermined pressure range - and an invalid section outside the active reference value range among the pressure data acquired from the first sensing unit;
The control unit extracts only the acceleration data that occurred during the effective section to determine the vertical movement distance (ds1) of the compression unit, and determines the vertical movement distance (ds2) of the reference unit based on the acceleration measured by the second detection unit. step; and
A control method of a CPR assist device comprising the step of determining the first compression depth of the compression unit by a control unit calculating the difference between the vertical movement distance (ds1) of the compression unit and the vertical movement distance (ds2) of the reference unit. . delete According to claim 1,
If the first compression depth of the compression unit is less than a reference value, determining that the compression has failed, and resetting the valid section determined to have failed to an invalid section, is a control method for a CPR assist device. According to claim 1,
If the first compression depth of the compression unit is greater than or equal to a reference value, determining that the compression is successful, and cumulatively counting the time and number of compressions in the effective section determined to be successful, is a control method for a CPR assist device. According to claim 4,
Determine the average compression speed based on the time elapsed from the first compression and the cumulative number of compressions,
A control method for a CPR assist device further comprising determining the current compression speed based on the time of the valid section determined to be successful and the time of the immediately preceding invalid section. A compression unit placed in a position to perform CPR and provided with a first detection unit that measures acceleration; and a reference unit disposed spaced apart from the compression unit and provided with a second detection unit that measures acceleration; In the control method of a CPR assist device including a connection part connecting the compression part and the reference part,
As the user presses the compression unit 100, the control unit obtains acceleration data of the reference unit 200 from the second detection unit 210 and sets a first angle of the reference unit 200 with respect to the horizontal plane. determining a second angle value of the reference unit after a value and unit time; and
A control unit determining the compression depth of the compression unit by multiplying the difference between the sine value of the first angle value and the sine value of the second angle value by the distance between the compression unit and the reference unit. Control method of CPR assist device. According to claim 6,
The control further includes determining the compression depth of the compression unit by calculating the difference between the vertical movement distance (ds2) measured by the second detection unit and the vertical movement distance (ds1) measured by the first detection unit. Control method of CPR assist device. According to claim 7,
determining a weight based on a ratio of the vertical movement distance of the compression unit and the vertical movement distance of the reference unit; and
A control method of a CPR assist device comprising the step of determining a corrected movement distance of the compression unit by multiplying any one of the compression depth and the compression depth by the weight. According to claim 7,
The first sensing unit further includes a pressure sensor,
The control unit,
When the pressure value measured by the first detection unit exceeds the reference value and then falls below the reference value, a control method of a CPR assist device in which one compression is considered to have ended and the first detection unit and the second detection unit are initialized. A compression unit placed in a position to perform CPR and having a built-in first sensor that measures acceleration; and a reference unit that is spaced apart from the compression unit and placed on the user's chest and has a built-in second sensor that measures acceleration; In a control method of a CPR assist device including a connection part connecting the first detection unit and the second detection unit,
A control unit calculating a vertical movement distance (ds1) of the compression unit based on the acceleration measured by the first detection unit and a vertical movement distance (ds2) of the reference unit based on the acceleration measured by the second detection unit; and
A control method of a CPR assist device comprising the step of determining the first compression depth of the compression unit by a control unit calculating the difference between the vertical movement distance (ds1) of the compression unit and the vertical movement distance (ds2) of the reference unit. .