Balance capability detection device and method

Abstract

The invention belongs to the field of medical rehabilitation, and provides a balance capacity detection device and method.The balance capacity detection device comprises a square pedal, pressure detection points, array type distribution film foot pressure sensors and three-dimensional force sensors; the balance capacity detection method provided by the device comprises the steps of balance capacity detection device construction, force distribution characteristic data acquisition, first plantar pressure distribution characteristic acquisition, index extraction, comprehensive evaluation, pressure change track data acquisition, second plantar pressure characteristic acquisition, index extraction, comprehensive evaluation and index fusion evaluation. Synchronous collection of static pressure center and plantar pressure data is achieved through the thin film foot pressure sensor and the three-dimensional force sensor which are distributed in an array mode, the diversity of detection data is increased, and the reliability of a detection result is improved; according to the detection method provided by the invention, multi-data comprehensive judgment is utilized, so that accurate evaluation on the static and walking balance ability of the target user is realized.

Description

Technical Field

[0001] The present invention relates to the field of medical rehabilitation, and in particular to a balance ability detection device and method. Background Art

[0002] The center of pressure, abbreviated as COP, is an extremely important point in the study of human movement. The center of pressure of the human body usually refers to certain parts or systems of the human body that are subjected to external pressure in daily life. The most common is the center of pressure of the foot. According to the theory of foot zoning, such as "reflexology of the sole of the foot" or foot zoning map, it can affect different parts and organs of the body. The change of the center of pressure of the human body will reflect the balance ability of the person. The three-dimensional force platform is widely used in motion analysis and biomechanics research. By measuring the forces in three directions, through force analysis, researchers can understand the magnitude and direction of the forces on the body, so as to further study the characteristics of biomechanics and human movement. The center of pressure of the human body is directly obtained through the three-dimensional force platform, and the balance state of the target user is judged by observing the position change of the center of pressure of the target user. The activity pattern of the muscles of the foot and lower limbs can affect the pressure of the sole of the foot, and the pressure distribution of the sole of the foot can reflect the posture control and balance ability of the body. During the balance process, the muscles need to adjust the output of force according to the pressure distribution of the sole of the foot to maintain the stability of the body. The pressure distribution of the sole of the foot can trigger nerve reflexes, thereby affecting the posture and balance of the body. Sensory nerve endings in the soles of the feet sense the body's position and movement, and transmit signals to the brain and nervous system to regulate muscle activity to maintain balance.

[0003] However, if the center of gravity of the human body is estimated only by measuring the force and torque in three directions, there will be a large offset between the measured center of gravity position and the actual center of gravity position of the target user. If the center of gravity position of the target user is judged only by the change of the center of gravity position, there will be large errors and uncertainties. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a balance ability detection device and method, which realizes the synchronous collection of force data and pressure distribution through an array-type distributed thin film foot pressure sensor and a three-dimensional force sensor, so as to increase the diversity of detection data and improve the reliability of detection results; through the balance ability detection method, using multi-indicator evaluation and judgment, an accurate evaluation of the target user's static and walking balance ability can be achieved.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A balance ability detection device comprises: a square pedal, a plurality of pressure detection points arranged at the four corners of the square pedal, a three-dimensional force sensor arranged in each of the pressure detection points, and an array-type distributed thin film foot pressure sensor attached to the upper surface of the square pedal;

[0007] The square pedal and the pressure detection point are both used to support the target user; the three-dimensional force sensor is used to collect mechanical data of the target user; and the array-type distributed thin film foot pressure sensor is used to collect the pressure distribution characteristics of the sole of the target user when the user is standing or walking.

[0008] Preferably, the array-type distributed thin-film foot pressure sensor comprises: a plurality of mutually independent sensing units;

[0009] The sensing units are all used to collect pressure information.

[0010] Preferably, a balance ability detection method comprises:

[0011] Constructing the balance ability detection device;

[0012] The three-dimensional force sensor is used to obtain the three-dimensional force data of the target user, and the static pressure center and moment are calculated for the three-dimensional force data to obtain force distribution characteristic data; the force distribution characteristic data includes: force average value, force deviation, force direction and force magnitude;

[0013] Using the array-type distributed thin film foot pressure sensor to obtain a first foot pressure distribution characteristic of the target user;

[0014] Evaluate the balance ability of the target user according to the force distribution characteristic data and the plantar pressure distribution characteristics to obtain a first balance ability evaluation index and a second balance ability evaluation index;

[0015] Performing a comprehensive evaluation of the target user's balance ability according to the first balance ability evaluation index and the second balance ability evaluation index to obtain a static balance ability evaluation index;

[0016] Extracting movement trajectories of the three-dimensional force data to obtain pressure change trajectory data;

[0017] Using the array-type distributed thin film foot pressure sensor to obtain a second sole pressure characteristic of a forefoot of the target user;

[0018] The target user's balance ability is evaluated according to the pressure change trajectory data and the second plantar pressure characteristics to obtain a third balance ability evaluation index and a fourth balance ability evaluation index;

[0019] Comprehensively evaluating the target user's balance ability according to the third balance ability evaluation index and the fourth balance ability evaluation index to obtain a dynamic balance ability evaluation index;

[0020] The static balance ability evaluation index and the dynamic balance ability evaluation index are combined to obtain a final balance ability evaluation result.

[0021] Preferably, it also includes:

[0022] Using the final balance ability assessment result to analyze the rehabilitation effect, and obtain a rehabilitation quality assessment result;

[0023] Using the final evaluation result of the balance ability to analyze the balance abnormality, and obtain the cause of the balance abnormality;

[0024] A balance ability training program is provided for the target user according to the cause of the abnormal balance.

[0025] The present invention discloses the following technical effects:

[0026] The present invention provides a balance ability detection device and method, which solves the problem of single source of balance ability detection data in the prior art through array-type distributed thin film foot pressure sensors and three-dimensional force sensors, and realizes the synchronous collection of center of gravity and pressure data; comprehensively evaluates the user's balance ability by jointly evaluating dynamic balance and static balance, solves the problem of single balance ability evaluation index in the prior art, and realizes the detection of the target user's balance ability in static and walking states. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic diagram of the structure of a balance ability detection device provided by an embodiment of the present invention;

[0029] Figure 2 An exploded diagram of a balance capability detection device provided by an embodiment of the present invention;

[0030] Figure 3 A flow chart of a static evaluation method provided by an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of a dynamic evaluation method provided by an embodiment of the present invention;

[0032] Figure 5A schematic diagram of the movement trajectory of the pressure center provided in an embodiment of the present invention;

[0033] Figure 6 A flow chart of obtaining static balance ability evaluation indicators provided by an embodiment of the present invention;

[0034] Figure 7 A flow chart of obtaining dynamic balancing capability evaluation indicators provided by an embodiment of the present invention;

[0035] Figure 8 A flowchart for obtaining the final evaluation result provided by an embodiment of the present invention;

[0036] Description of reference numerals:

[0037] 1-square pedal, 2-pressure detection point, 3-array distributed thin film foot pressure sensor. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The purpose of the present invention is to provide a balance ability detection device and method, which realizes the synchronous collection of force data and pressure distribution through an array-type distributed thin film foot pressure sensor and a three-dimensional force sensor, so as to increase the diversity of detection data and improve the reliability of detection results; through the balance ability detection method, using multi-indicator evaluation and judgment, an accurate evaluation of the target user's static and walking balance ability can be achieved.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Figure 1 A schematic diagram of the structure of a balance ability detection device provided in an embodiment of the present invention. Figure 2 An exploded diagram of a balance capability detection device provided in an embodiment of the present invention is shown in FIG. Figure 1 and Figure 2 As shown, the present invention provides a balance ability detection device, comprising: a square pedal 1, a plurality of pressure detection points 2 arranged at the four corners of the square pedal, a three-dimensional force sensor arranged in each pressure detection point 2, and an array-type distributed thin film foot pressure sensor 3 attached to the upper surface of the square pedal;

[0042] The square pedal 1 and the pressure detection point 2 are both used to support the target user; the three-dimensional force sensor is used to collect the mechanical data of the target user; the array-type distributed thin film foot pressure sensor 3 is used to collect the plantar pressure distribution characteristics of the target user when standing or walking.

[0043] Specifically, the array-type distributed thin-film foot pressure sensor 3 includes: a plurality of mutually independent sensing units (the sensing units are relatively independent to achieve minimum interference);

[0044] The sensing units are used to collect pressure information.

[0045] refer to Figure 4 , a balance ability detection method, comprising:

[0046] Construct a balance ability testing device;

[0047] The three-dimensional force data of the target user is obtained by using a three-dimensional force sensor, and the static pressure center and moment of the three-dimensional force data are calculated to obtain force distribution characteristic data; the force distribution characteristic data includes: force average value, force deviation, force direction and force magnitude;

[0048] The first plantar pressure distribution characteristics of the target user are obtained by using the array-type distributed thin film foot pressure sensor 3;

[0049] The target user's balance ability is evaluated according to the force distribution characteristic data and the plantar pressure distribution characteristics to obtain a first balance ability evaluation index and a second balance ability evaluation index;

[0050] Comprehensively evaluate the balance ability of the target user according to the first balance ability evaluation index and the second balance ability evaluation index to obtain a static balance ability evaluation index;

[0051] Extract the moving trajectory of the three-dimensional force data to obtain the pressure change trajectory data;

[0052] The second plantar pressure characteristic of the forefoot of the target user is obtained by using an array-type distributed thin film foot pressure sensor 3;

[0053] The target user's balance ability is evaluated according to the pressure change trajectory data and the second plantar pressure characteristics, respectively, to obtain a third balance ability evaluation index and a fourth balance ability evaluation index;

[0054] Comprehensively evaluate the target user's balance ability according to the third balance ability evaluation index and the fourth balance ability evaluation index to obtain a dynamic balance ability evaluation index;

[0055] The static balance ability evaluation index and the dynamic balance ability evaluation index are combined to obtain the final evaluation result of the balance ability.

[0056] refer to Figure 5, the plane change trajectory of the user's pressure center, including:

[0057] Draw the pressure center transfer trajectory curve using visualization software based on the walking pressure center;

[0058] The walking plantar pressure data is subjected to feature extraction to obtain the walking plantar pressure distribution characteristics.

[0059] Furthermore, it also includes:

[0060] The final assessment results of balance ability are used to analyze the rehabilitation effect and obtain the rehabilitation quality assessment results;

[0061] Use the final evaluation results of balance ability to analyze balance abnormalities and find out the causes of balance abnormalities;

[0062] Provide balance training programs for target users based on the causes of balance abnormalities.

[0063] Preferably, when the target user walks on the square pedal 1, it is determined according to the sole shape data whether the sole of the target user has completely landed, and the sole landing state is obtained, which further includes:

[0064] Connecting several balancing ability detection devices in sequence to obtain a combined detection device;

[0065] Have the target user walk on the combined detection device.

[0066] Specifically, the sole shape data includes: outline data, size data, and width data.

[0067] refer to Figure 6 , method to obtain static balance evaluation index:

[0068] 1) The data obtained by the three-dimensional force sensor is: the sensor at each force measurement point can directly obtain the pressure center of the target user;

[0069] 2) The array distributed sensor obtains the sensing unit of the part in contact with the sole of the foot when the user stands for a period of time, and obtains the corresponding sole pressure data. The sole pressure data is extracted to obtain the sole pressure distribution characteristics of the left and right feet of the target user respectively.

[0070] 3) After the user stands on the balance detection device for a period of time, Figure 3 Static assessment method, obtains static balance ability assessment indicators.

[0071] refer to Figure 7 , get the dynamic balance evaluation index method:

[0072] 1) When the target user takes a step, from the time the foot begins to touch the pedal to the time the foot leaves the pedal, the three-dimensional force sensor captures the three-dimensional force of the target user's front foot and the user's pressure; at the same time, feature extraction is performed on the three-dimensional force to extract the force characteristics.

[0073] 2) The sensing unit in contact with the sole of the forefoot of the target user acquires corresponding sole pressure data to obtain the sole pressure distribution characteristics of the forefoot of the target user;

[0074] 3) After the user follows the steps in step 1, Figure 4 The dynamic assessment method is used to obtain the user's dynamic balance ability assessment index.

[0075] refer to Figure 8 , the way to get the final evaluation result:

[0076] The above Figure 6 The static evaluation index obtained is Figure 7 The obtained dynamic assessment index comprehensively evaluates the user's balance ability and obtains the final assessment result, which is used to analyze whether the user has functional defects caused by nerve damage, musculoskeletal damage or degenerative diseases.

[0077] Specifically, the present invention can evaluate the balance ability of the target user in two ways:

[0078] Method 1: Method for evaluating the static balance ability of the target user when standing steadily:

[0079] 1) The target user stands steadily on the balance ability testing device. After a period of time, the three-dimensional force sensor under the pedal will directly obtain the real-time data of the target user's force and the static pressure center of the target user; the user is evaluated through the pressure center.

[0080] 2) The array-type distributed thin-film foot pressure sensor 3 above the pedal will obtain the plantar pressure data of the target user's sole, extract the plantar pressure distribution characteristics, and evaluate the user based on the plantar pressure distribution characteristics.

[0081] The two evaluation results are combined to obtain a static balance ability evaluation index, and the user's balance ability is evaluated to obtain a static balance evaluation result, and the user's balance ability is analyzed.

[0082] Method 2: Method for evaluating the dynamic balance ability of the target user when walking:

[0083] 1) A plurality of force platforms can be sequentially spliced ​​together to obtain a force platform that can be used to measure walking status;

[0084] 4) When the target user is walking, the array-type distributed thin film foot pressure sensor 3 obtains the plantar pressure data of the target user's forefoot; whether the target user's foot leaves the force measuring platform, the array-type distributed thin film foot pressure sensor 3 stops obtaining the plantar pressure data;

[0085] 5) The dynamic balance ability of the target user while walking is evaluated using the obtained dynamic balance evaluation index.

[0086] Furthermore, by taking the user's static balance ability and dynamic balance ability as indicators to judge the target user's posture control level, the target user can be analyzed to see whether he or she has functional defects due to nerve damage, musculoskeletal damage or degenerative diseases based on the static balance ability and dynamic balance ability, or rehabilitation quality assessment and balance ability training can be provided for athletes, soldiers, etc.

[0087] The beneficial effects of the present invention are as follows:

[0088] The advantages of the present invention are:

[0089] (1) By adding an array-type distributed thin film foot pressure sensor, the pressure distribution of the sole of the target user is obtained. The user's balance ability is evaluated in two ways, which can improve the accuracy of the evaluation.

[0090] (2) The present invention uses an array of distributed thin-film foot pressure sensors on the upper side and force measuring points on the lower side, combining force data at different positions to obtain multi-dimensional information. The acquisition of multi-dimensional information helps to more fully understand the posture and balance state of the target user, and improves the accuracy and reliability of the assessment.

[0091] (3) By combining the data obtained from the upper array-type distributed thin-film foot pressure sensors and the lower force measurement points, a comprehensive assessment of the target user's posture control ability can be performed. The comprehensive assessment can more comprehensively reflect the target user's posture control level and help diagnose possible balance control problems.

[0092] (4) Since the sensor can capture the plantar pressure distribution and three-dimensional force data in real time, the device can monitor the posture and balance of the target user in real time. When the target user performs an action, the system can provide timely feedback to help him adjust his posture and balance, thereby improving his posture control ability.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A balance ability detection device, characterized in that: include: A square pedal, a plurality of pressure detection points arranged at the four corners of the square pedal, a three-dimensional force sensor arranged in each of the pressure detection points, and an array-type distributed thin film foot pressure sensor attached to the upper surface of the square pedal; The square pedal and the pressure detection point are both used to support the target user; The three-dimensional force sensor is used to collect mechanical data of the target user; the array-type distributed thin film foot pressure sensor is used to collect the pressure distribution characteristics of the sole of the foot of the target user when the user is standing or walking.

2. A balance ability detection device according to claim 1, characterized in that: The array-type distributed thin-film foot pressure sensor comprises: a plurality of mutually independent sensing units; The sensing units are all used to collect pressure information.

3. A method for detecting balance ability, characterized in that: A balance ability detection device according to claim 1, wherein the method comprises: Constructing the balance ability detection device; The three-dimensional force sensor is used to obtain the three-dimensional force data of the target user, and the static pressure center and moment are calculated for the three-dimensional force data to obtain force distribution characteristic data; the force distribution characteristic data includes: force average value, force deviation, force direction and force magnitude; Using the array-type distributed thin film foot pressure sensor to obtain a first foot pressure distribution characteristic of the target user; Evaluate the balance ability of the target user according to the force distribution characteristic data and the plantar pressure distribution characteristic to obtain a first balance ability evaluation index and a second balance ability evaluation index; Performing a comprehensive evaluation of the target user's balance ability according to the first balance ability evaluation index and the second balance ability evaluation index to obtain a static balance ability evaluation index; Extracting movement trajectories of the three-dimensional force data to obtain pressure change trajectory data; Using the array-type distributed thin film foot pressure sensor to obtain a second sole pressure characteristic of a forefoot of the target user; The target user's balance ability is evaluated according to the pressure change trajectory data and the second plantar pressure characteristics to obtain a third balance ability evaluation index and a fourth balance ability evaluation index; Comprehensively evaluating the target user's balance ability according to the third balance ability evaluation index and the fourth balance ability evaluation index to obtain a dynamic balance ability evaluation index; The static balance ability evaluation index and the dynamic balance ability evaluation index are combined to obtain a final balance ability evaluation result.

4. A balance ability detection method according to claim 3, characterized in that: Also includes: Using the final balance ability assessment result to analyze the rehabilitation effect, and obtain a rehabilitation quality assessment result; Using the final evaluation result of the balance ability to analyze the balance abnormality, and obtain the cause of the balance abnormality; A balance ability training program is provided for the target user according to the cause of the abnormal balance.

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