CN113096801A - Human body falling risk assessment system and method based on gravity line monitoring - Google Patents
Human body falling risk assessment system and method based on gravity line monitoring Download PDFInfo
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Abstract
The invention discloses a human body falling risk assessment system and method based on gravity line monitoring, which can obtain balance system data of a tested person by continuously monitoring the change of the human body gravity, measuring the swinging condition of a gravity line and analyzing the swinging mode, and further compare the balance system data with an assessment standard to realize quantitative assessment of human body falling risk; when the method is applied to medical treatment and health detection, the severity of damage of a patient balance system can be known, the risk degree of balance disorder of a tester can be roughly determined, and the method is suitable for postoperative patient care assessment and elderly falling risk assessment; the method has great guiding significance for the evaluation and diagnosis of patients with balance dysfunction, analyzes the motion range of the gravity line of the patients in a standing state, is closer to the daily life state of the human body, more accurately reflects the actual condition of the patients, has objective, scientific and reliable evaluation results, and provides new reference indexes for clinical research, decision-making and prognosis evaluation.
Description
Technical Field
The invention relates to the field of human health detection products, in particular to a human falling risk assessment system and method based on gravity line monitoring.
Background
Falls are the main factors of health risks of the elderly, and the probability of falls of the elderly over 65 years old is as high as 28% -33% every year, and in addition, diseases related to balance can also cause falls.
The existing human body falling risk assessment method adopts a professional to assess the falling risk of a tested person according to the physiological health condition and the limb activity capability of the tested person and a preset falling risk assessment table. The disadvantages are that: the existing evaluation method has strong subjectivity, and a tester and a tested person have great influence on an evaluation result, and particularly, the detection result is influenced by the tester and the test time, and the same person can hardly reach a consistent detection standard when measuring at different times; lack of scientific quantitative data support; the human body maintains standing balance and is prevented from falling down, the gravity center track needs to be stabilized within a certain range of the double-foot supporting surface, and the prior art does not have a precedent for pre-judging the falling risk of the human body according to the gravity center track data.
Disclosure of Invention
The invention aims to provide a human body falling risk assessment system and method based on gravity line monitoring, which can realize quantitative assessment of human body falling risk by measuring the change range of the gravity center position of a human body.
In order to solve the technical problem, the invention provides a human body falling risk assessment system based on gravity line monitoring, which comprises: the device comprises a communication device, a plantar pressure measuring device and a control device, wherein the communication device is in signal connection with the plantar pressure measuring device and the control device, the plantar pressure measuring device is used for measuring the plantar pressure of a tested person in real time, acquiring the plantar pressure data of the tested person, transmitting the plantar pressure data of the tested person to the control device through the communication device, the control device receives the pressure data and calculates the gravity line data of the tested person based on the pressure data, and the control device is also used for comparing and analyzing the gravity line data of the tested person with an evaluation standard and judging the falling risk of the tested person.
According to a specific embodiment of the present invention, the plantar pressure measuring device is a plantar pressure measuring flat plate, and includes a detecting device and a signal collecting device, the detecting device is disposed in a standing area of a testee, a plurality of pressure test points are distributed in the standing area in a matrix form, each pressure test point is provided with a pressure sensor for measuring plantar pressure data of the testee, and the signal collecting device is configured to collect pressure data of the pressure sensor in real time and transmit the pressure data to the control device.
According to an embodiment of the present invention, the gravity line data includes a sagittal gravity line swing ratio a of the subject, and the calculation formula of the sagittal gravity line swing ratio a is: a ═ L1/L2；
Wherein L is1For the gravity line swing amplitude, L, of the subject in the sagittal plane direction2The swing amplitude of the gravity line is obtained when the tested person leans forwards and backwards to the limit position;
the gravity line dataThe method further comprises a crowning surface gravity line swing ratio of the testee, and a calculation formula of the crowning surface gravity line swing ratio B is as follows: b ═ L3/L4；
Wherein L is3The swing amplitude, L, of the gravity line in the coronal direction of the subject4The swing amplitude of the gravity line is obtained when the tested person inclines left and right to the limit position.
According to an embodiment of the present invention, the position of the gravity line of the subject coincides with the normal vector direction of the pressure center thereof, and the calculation formula of the pressure center coordinate is:
wherein, X and Y are the abscissa and ordinate of the center of pressure of the sole;
kx ia sensor coefficient representing an abscissa of the ith pressure sensor;
xian x-axis coordinate value representing a corresponding ith pressure sensor;
ky ia sensor coefficient representing an ith pressure sensor ordinate;
yia y-axis coordinate value representing a corresponding i-th pressure sensor;
Viindicating pressure data measured by the position pressure sensor;
a represents a correction coefficient of the abscissa, and the default value is 0;
b represents a correction coefficient of a vertical coordinate, and the default value is 0;
n is the total number of pressure sensors in the x-axis direction;
m is the total number of pressure sensors in the y-axis direction.
According to an embodiment of the present invention, the evaluation criterion is a calibration value based on the measured gravity line data of a healthy population, or the measured gravity line data of the history of the measured person.
According to an embodiment of the present invention, the communication device includes a wired communication device and/or a wireless communication device.
According to a specific embodiment of the present invention, the apparatus further comprises a storage device for storing the pressure data and the gravity line data, and the storage device is connected to the control device.
According to a specific embodiment of the present invention, the apparatus further comprises a display device, the display device is connected to the control device, and the display device is configured to display the gravity line data.
According to a specific embodiment of the present invention, the mobile terminal further comprises a voice prompt device, and the voice prompt device is connected to the control device.
The invention also provides a human body falling risk assessment method based on gravity line monitoring, which comprises the following specific steps:
acquiring plantar pressure data of a tested person;
calculating gravity line data based on plantar pressure data;
and comparing the gravity line data with an evaluation standard to judge the falling risk of the tested person.
According to an embodiment of the present invention, the method for acquiring the plantar pressure data of the testee comprises:
a testee stands on the plantar pressure measuring equipment naturally with bare feet to measure, and plantar pressure data of the testee when standing naturally are obtained;
the method comprises the following steps that a tested person does not move with feet, the tested person inclines in the left direction, the right direction, the front direction and the rear direction on a plantar pressure measuring device, and plantar pressure data of the tested person when the tested person inclines in the left direction, the right direction, the front direction and the rear direction to the extreme position to stand are obtained;
the testee closes the eyes and naturally stands on the plantar pressure measuring equipment, and plantar pressure data of the testee in a preset time length are obtained and counted.
According to an embodiment of the present invention, the calculating the gravity line data of the tested person based on the plantar pressure data includes:
according to the plantar pressure data of a tested person when the tested person stands naturally, the pressure center position of the tested person is calculated, and the normal vector direction of the pressure center of the tested person is superposed with the gravity line of the tested person;
calculating the ultimate swing range of the gravity line of the tested person according to the plantar pressure data when the tested person inclines to the extreme position from the left direction, the right direction, the front direction and the rear direction;
calculating the natural swing range of the gravity line of the tested person according to the plantar pressure data of the tested person within the preset time length;
and calculating the gravity line swing ratio of the sagittal plane and the coronal plane of the tested person according to the gravity line limit swing range and the gravity line natural swing range.
According to an embodiment of the present invention, the evaluation criterion is a calibration value based on the measured gravity line data of a healthy population or the measured gravity line data of a tested person history.
The invention has the technical effects that: according to the system and the method for evaluating the human body falling risk based on the gravity line monitoring, the change of the human body weight center is continuously monitored, the swinging condition of the gravity line is measured, the swinging condition of the gravity line within a certain time is recorded, the swinging mode is analyzed, the balance system data of a tested person can be obtained, the balance system data can be further compared with an evaluation standard, and the human body falling risk can be quantitatively evaluated according to the information; when the invention is applied to medical treatment and health detection, the severity of the damage of the balance system of a patient can be known, and the risk degree of balance disorder of a tester can be roughly determined through a swing mode, so that the invention has great guiding significance for the evaluation and diagnosis of patients with balance dysfunction caused by various reasons, and is suitable for the nursing evaluation of patients after surgery and the evaluation of the falling risk of old people; the motion range of the gravity line of the patient in the standing state is analyzed, the motion range is closer to the daily life state of the human body, the actual condition of the patient is more accurately reflected, the evaluation result is objective, scientific and reliable, and a new reference index is provided for clinical research, decision making and prognosis evaluation.
Drawings
Fig. 1 is a schematic structural diagram of a human fall risk assessment system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating basic steps of a method for evaluating a fall risk of a human body according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a human fall risk assessment system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a testing process of the human fall risk assessment system according to an embodiment of the present invention;
fig. 5 is a diagram of the swing range of gravity line under normal conditions of a tested person in an embodiment of the invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
As shown in fig. 1, a schematic structural diagram of a system for assessing human fall risk based on gravity line monitoring according to the present invention includes: communication equipment, plantar pressure measuring equipment and controlling means, communication equipment signal connection plantar pressure measuring equipment and controlling means, plantar pressure measuring equipment is used for measuring the plantar pressure of testee in real time, acquire the plantar pressure data of testee, and transmit the plantar pressure data of testee to controlling means through communication equipment, controlling means receives pressure data and calculates the gravity line data of testee based on pressure data, controlling means still is used for carrying out comparative analysis with testee gravity line data and evaluation standard, judge the risk of tumbleing of testee.
Plantar pressure measuring equipment is plantar pressure measurement flat board, including detection device and signal acquisition device, detection device sets up in the region of standing by the testee, and it has a plurality of pressure test points to be the matrix distribution in the region of standing, and every pressure test point is provided with the pressure sensor who is used for measuring testee plantar pressure data, and signal acquisition device is used for gathering pressure sensor's pressure data in real time and transmits to controlling means.
The gravity line data comprises a sagittal gravity line swing ratio and a coronal gravity line swing ratio of the tested person;
the calculation formula of the sagittal gravity line swing ratio A is as follows: a ═ L1/L2L1 is the swing amplitude of the gravity line of the tested person in the sagittal plane direction, and L2 is the swing amplitude of the gravity line of the tested person when leaning forward and backward to the limit position;
the formula for calculating the swing ratio B of the gravity line of the coronal plane is as follows: b ═ L3/L4L3 is the swing amplitude of the gravity line in the coronal direction of the subject, and L4 is the swing amplitude of the gravity line when the subject leans left or right to the limit position.
The position of the gravity line of the tested person is coincided with the normal vector direction of the pressure center of the tested person, so the position of the gravity line of the tested person is determined by calculating the pressure center, and the calculation formula of the pressure center coordinate is as follows:
wherein, X and Y are the abscissa and ordinate of the center of pressure of the sole;
kx ia sensor coefficient representing an abscissa of the ith pressure sensor;
xian x-axis coordinate value representing a corresponding ith pressure sensor;
ky ia sensor coefficient representing an ith pressure sensor ordinate;
yia y-axis coordinate value representing a corresponding i-th pressure sensor;
Viindicating pressure data measured by the position pressure sensor;
a represents a correction coefficient of the abscissa, and the default value is 0;
b represents a correction coefficient of a vertical coordinate, and the default value is 0;
n is the total number of pressure sensors in the x-axis direction;
m is the total number of pressure sensors in the y-axis direction.
Specifically, the evaluation criterion may be a calibration value for the gravity line data measured based on a healthy population, or the gravity line data measured by the history of the tested person.
The communication device comprises a wired communication device and/or a wireless communication device, the communication protocol comprises at least one of USB, Type-C, Bluetooth, WIFI and 5G, and according to a specific embodiment of the invention, the communication device supports wired and wireless modes simultaneously.
As shown in fig. 3, according to an embodiment of the present invention, the system for evaluating a human fall risk further includes a storage device for storing the pressure data and the gravity line data, the storage device is connected to the control apparatus; further, the storage device may be used to store the testee information and the evaluation criteria input by the tester.
As shown in fig. 3, according to an embodiment of the present invention, the system for evaluating a human fall risk further includes a display device, the display device is connected to the control apparatus, and the display device is used for displaying gravity line data.
As shown in fig. 3, according to an embodiment of the present invention, the human body falling risk assessment system further includes a voice prompt device for voice guiding the tested person to perform a complete risk assessment test according to the test flow, specifically, the voice prompt device includes a detection unit, a determination unit, a control unit and a voice player, the detection unit detects the test state of the tested person;
the judging unit is used for judging whether the test state of the tested person meets the preset voice prompt condition or not, if the current test state of the tested person meets the preset prompt condition, a target voice file is obtained, the target voice file is a voice file corresponding to the preset prompt condition and is a file played through a natural language, and the control unit controls the voice player to play the target voice file for prompting;
wherein judge whether the test state of testee satisfies the preset voice prompt condition and include: judging whether the current test item is finished, wherein the obtained target file comprises: if the current test item is judged to be finished; and searching a voice prompt file corresponding to the next test item.
Specifically, according to an embodiment of the present invention, as shown in fig. 4, the control device is an upper computer software, the testee stands in a standing area of the plantar pressure measuring plate, the standing area is provided with a matrix sensor, and a display interface of the upper computer software displays the measured plantar pressure data of the testee in real time, including a plantar pressure map and specific numerical values.
The invention also provides a human body falling risk assessment method based on gravity line monitoring, which comprises the following steps:
acquiring plantar pressure data of a tested person;
calculating gravity line data based on plantar pressure data;
and comparing the gravity line data with an evaluation standard to judge the falling risk of the tested person.
As shown in fig. 2, according to an embodiment of the method of the present invention, the specific evaluation step comprises: step 1: acquiring plantar pressure data of a tested person;
the method specifically comprises the following steps: 101. registering the subject information: the information comprises the name, sex, age, height, weight and other data of the tested person; 102. acquiring pressure data and calculating pressure center coordinates: the testee stands on the plantar pressure measuring flat plate naturally with bare feet, keeps balance and carries out measurement; the control device receives and stores pressure data measured by the sole measuring panel, calculates pressure center coordinates of a tested person in a natural standing state and determines the gravity line position of the tested person;
the position of the gravity line of the tested person is coincided with the normal vector direction of the pressure center of the tested person, so the position of the gravity line of the tested person is determined by calculating the pressure center, and the calculation formula of the pressure center coordinate is as follows:
wherein, X and Y are the abscissa and ordinate of the center of pressure of the sole;
kx ia sensor coefficient representing an abscissa of the ith pressure sensor;
xian x-axis coordinate value representing a corresponding ith pressure sensor;
ky ia sensor coefficient representing an ith pressure sensor ordinate;
yia y-axis coordinate value representing a corresponding i-th pressure sensor;
Viindicating pressure data measured by the position pressure sensor;
a represents a correction coefficient of the abscissa, and the default value is 0;
b represents a correction coefficient of a vertical coordinate, and the default value is 0;
n is the total number of pressure sensors in the x-axis direction;
m is the total number of pressure sensors in the y-axis direction; the normal vector of the pressure center is superposed with the vector direction of the gravity line of the tested body.
103. Acquiring the swinging limit position of the gravity line of the tested person: the testee stands on the plantar pressure test flat plate naturally with bare feet, the pressure data of the testee when leaning to the extreme positions left, right, forward and backward are measured respectively, and the control device calculates the extreme position (m) of the left side of the pressure center of the testee respectively according to the measured pressure data1,n1) Right limit position (m)2,n2) Front limit position (m)3,n3) And rear limit position (m)4,n4)。
104. Acquiring the swing variation range of the gravity line of the tested person under the normal condition: the testee keeps the state that the two arms extend forwards, sole pressure data measured by the testee standing on the sole pressure measuring plate naturally in the eye closing state within 30 seconds are obtained and counted, and the change track of the gravity line under the normal condition of the human body is detected by a method of calculating the movement range of the gravity line under the eye closing state of the testee;
it should be understood that 30 seconds is only the measurement duration of a preferred embodiment of the present invention, and other durations may be actually selected for data measurement in specific applications according to circumstances; for example, the predetermined time length can be selected from 30s, 45s or 60s, and the gravity line swing range of the tested person when the tested person closes the eye and stands is counted and calculated in the period;
the gravity line swing range is processed in real time by transmitting pressure data acquired in real time to the control device; the control device stores the received pressure data, calculates the real-time pressure center position, dynamically updates and displays the pressure center position, records the pressure center position change of the tested person within continuous 30 seconds, and draws a pressure center position change curve which is a continuous drift change curve, as shown in fig. 5; according to the curve, pressure center swing outer contour boundaries of the tested person in four directions of left, right, front and back in a natural standing state in the eye closing process are obtained and are respectively left side outer contour boundaries (c)1,d1) Right outer contour boundary (c)2,d2) Front outer contour boundary (c)3,d3) Rear outer contour boundary (c)4,d4)。
Step 2, calculating gravity line data based on plantar pressure data;
the gravity line data comprises a gravity line swing ratio of a sagittal plane and a coronal plane of the tested person;
the calculation formula of the sagittal gravity line swing ratio A is as follows: a ═ L1/L2；
Wherein:
L1the swing amplitude L of the gravity line of the tested person in the sagittal plane (front and back of the human body) direction2Calculating formula for swing amplitude of gravity line when the tested person leans forwards and backwards to limit positionComprises the following steps:
the formula for calculating the swing ratio B of the gravity line of the coronal plane is as follows: b ═ L3/L4；
Wherein:
L3the swing amplitude L of the gravity line in the coronal plane (left and right of the human body) direction of the tested person4For the swing amplitude of the gravity line when the tested person inclines left and right to the extreme position, the calculation formula is as follows:
step 3, comparing the gravity line data with an evaluation standard, and judging the falling risk of the tested person;
firstly, determining an evaluation standard; and then comparing and analyzing the sagittal gravity line swing ratio A and coronal gravity line swing ratio B obtained by the test of the tested person with the sagittal gravity line swing ratio and coronal gravity line swing ratio corresponding to the evaluation standard, and evaluating the falling risk of the tested person according to the result of the comparison and analysis.
It should be understood that during all testing procedures, the testee is required to stand with both feet on the flat plate and remain stationary; the relative position can be adjusted slightly when each station stands, and the feet can stand around the central position in the standing area of the plantar pressure measuring flat plate, namely, each testee stands in a certain mode in the test process, so that the measurement accuracy is higher.
In one embodiment of the invention, the evaluation standard is a healthy population, and a sagittal gravity line swing ratio nominal reference value database A is established for healthy populations with different sexes, ages, heights and weights in advance, wherein the healthy population is a population with a healthy body balance systemnAnd coronal gravity line swing ratio nominal reference value database Bn(ii) a When the falling risk assessment is carried out on the tested person, the falling risk assessment method is based on the sex of the tested personThe identity, age, height and weight of the patient, and the corresponding nominal reference value An、BnComparing the swing ratio A, B and A of the gravity line of the tested personn，BnIf A is large or smalln>A and Bn>B, the falling risk grade of the tested person is low, and if A is used, the falling risk grade is lown< A and BnIf < B, it indicates the balance system of the tested person is abnormal.
In another embodiment of the present invention, the evaluation criterion is the status of the subject before the disease treatment; for example, the measurement is performed before and after the operation of the subject, and the ratio A of the gravity line swing of the sagittal plane is measured before the operation of the subject1And the gravity line swing ratio B of the coronal plane1And storing, after the tested person is treated by operation, testing the tested person to obtain the gravity line swing ratio A of the sagittal plane after treatment2And the gravity line swing ratio B of the coronal plane2If A is2<A1And B2<B1The falling risk of the tested person is reduced compared with that before, otherwise, the falling risk is improved; correspondingly, the treatment recovery condition of the tested person can be determined by respectively carrying out measurement and comparative analysis in different time periods of the disease treatment recovery period.
The evaluation method can be widely applied to nursing evaluation of patients after surgical operations, can also be used for evaluation of falling risks of inpatients, and provides a new reference index for clinical research, decision making and prognosis evaluation.
According to the embodiment of the invention, through continuous monitoring of the position coordinates of the gravity line, the upper computer software can display the change condition of the gravity line of the patient at the current moment in real time to generate a corresponding image and curve, and the obtained data is convenient for assisting clinical research of doctors and remote falling risk assessment consultation.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (13)
1. A human body falling risk assessment system based on gravity line monitoring is characterized by comprising: the device comprises a communication device, a plantar pressure measuring device and a control device, wherein the communication device is in signal connection with the plantar pressure measuring device and the control device, the plantar pressure measuring device is used for measuring the plantar pressure of a tested person in real time, acquiring the plantar pressure data of the tested person, transmitting the plantar pressure data of the tested person to the control device through the communication device, the control device receives the pressure data and calculates the gravity line data of the tested person based on the pressure data, and the control device is also used for comparing and analyzing the gravity line data of the tested person with an evaluation standard and judging the falling risk of the tested person.
2. The personal fall risk assessment system according to claim 1, wherein: the plantar pressure measuring equipment is a plantar pressure measuring panel and comprises a detecting device and a signal collecting device, wherein the detecting device is arranged in a stand area of a tested person, a plurality of pressure test points are distributed in the stand area in a matrix mode, each pressure test point is provided with a pressure sensor for measuring plantar pressure data of the tested person, and the signal collecting device is used for collecting the pressure data of the pressure sensor in real time and transmitting the pressure data to the control device.
3. The human fall risk assessment system according to claim 2, wherein the gravity line data includes a sagittal gravity line swing ratio a of the subject, and the calculation formula of the sagittal gravity line swing ratio a is as follows: a ═ L1/L2；
Wherein L is1For the gravity line swing amplitude, L, of the subject in the sagittal plane direction2The swing amplitude of the gravity line is obtained when the tested person leans forwards and backwards to the limit position;
the gravity line data further comprises a coronal plane gravity line swing ratio of the tested person, and the coronal plane gravity line swing ratio is BThe calculation formula is as follows: b ═ L3/L4；
Wherein L is3The swing amplitude, L, of the gravity line in the coronal direction of the subject4The swing amplitude of the gravity line is obtained when the tested person inclines left and right to the limit position.
4. The personal fall risk assessment system according to claim 3, wherein: the position of the gravity line of the tested person is coincided with the normal vector direction of the pressure center of the tested person, and the calculation formula of the pressure center coordinate is as follows:
wherein, X and Y are the abscissa and ordinate of the center of pressure of the sole;
kx ia sensor coefficient representing an abscissa of the ith pressure sensor;
xian x-axis coordinate value representing a corresponding ith pressure sensor;
ky ia sensor coefficient representing an ith pressure sensor ordinate;
yia y-axis coordinate value representing a corresponding i-th pressure sensor;
Viindicating pressure data measured by the position pressure sensor;
a represents a correction coefficient of the abscissa, and the default value is 0;
b represents a correction coefficient of a vertical coordinate, and the default value is 0;
n is the total number of pressure sensors in the x-axis direction;
m is the total number of pressure sensors in the y-axis direction.
5. The system for assessing human fall risk according to claim 1, wherein the assessment criterion is a calibration value based on gravity line data measured by healthy people or gravity line data measured by the tested person in history.
6. The personal fall risk assessment system according to claim 1, wherein: the communication equipment comprises wired communication equipment and/or wireless communication equipment.
7. The system for assessing the risk of a human falling according to claim 1, further comprising a storage device for storing the pressure data and the gravity line data, wherein the storage device is connected to the control apparatus.
8. The personal fall risk assessment system according to claim 1, wherein: the gravity line data acquisition device further comprises a display device, wherein the display device is connected with the control device and is used for displaying the gravity line data.
9. The personal fall risk assessment system according to claim 1, wherein: the voice prompt device is connected with the control device.
10. A human body falling risk assessment method based on gravity line monitoring is characterized by comprising the following specific steps:
acquiring plantar pressure data of a tested person;
calculating gravity line data based on plantar pressure data;
and comparing the gravity line data with an evaluation standard to judge the falling risk of the tested person.
11. The human body falling risk assessment method based on gravity line monitoring as claimed in claim 10, wherein the specific method for obtaining the data of the sole pressure of the tested person is as follows:
a testee stands on the plantar pressure measuring equipment naturally with bare feet to measure, and plantar pressure data of the testee when standing naturally are obtained;
the method comprises the following steps that a tested person does not move with feet, the tested person inclines in the left direction, the right direction, the front direction and the rear direction on a plantar pressure measuring device, and plantar pressure data of the tested person when the tested person inclines in the left direction, the right direction, the front direction and the rear direction to the extreme position to stand are obtained;
the testee closes the eyes and naturally stands on the plantar pressure measuring equipment, and plantar pressure data of the testee in a preset time length are obtained and counted.
12. The human body falling risk assessment method based on gravity line monitoring as claimed in claim 11, wherein the calculating the gravity line data of the tested person based on the sole pressure data specifically comprises:
according to the plantar pressure data of a tested person when the tested person stands naturally, the pressure center position of the tested person is calculated, and the normal vector direction of the pressure center of the tested person is superposed with the gravity line of the tested person;
calculating the ultimate swing range of the gravity line of the tested person according to the plantar pressure data when the tested person inclines to the extreme position from the left direction, the right direction, the front direction and the rear direction;
calculating the natural swing range of the gravity line of the tested person according to the plantar pressure data of the tested person within the preset time length;
and calculating the gravity line swing ratio of the sagittal plane and the coronal plane of the tested person according to the gravity line limit swing range and the gravity line natural swing range.
13. The method for assessing human fall risk based on gravity line monitoring as claimed in claim 10, wherein the assessment criterion is a calibration value based on gravity line data measured by healthy people or gravity line data measured by a tested person in history.
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| KR102704846B1 (en) * | 2023-06-16 | 2024-09-09 | 주식회사 에이치에스연구소 | Foot Pressure based Qualitative Early Fall Prediction Tool |
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