CN215272761U - Human body balance detection device - Google Patents
Human body balance detection device Download PDFInfo
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- CN215272761U CN215272761U CN202120607965.2U CN202120607965U CN215272761U CN 215272761 U CN215272761 U CN 215272761U CN 202120607965 U CN202120607965 U CN 202120607965U CN 215272761 U CN215272761 U CN 215272761U
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Abstract
The utility model relates to a human body balance detection device, which comprises an installation base, a left pedal and a right pedal arranged on the installation base, wherein the left pedal comprises a left bearing plate and a left sensor unit, and the left bearing plate is connected with the installation base through the left sensor unit; the right pedal comprises a right bearing plate and a right sensor unit, and the right bearing plate is connected with the mounting base through the right sensor unit. The utility model provides a human body balance detection device can distinguish about the foot focus change, can discern about the unusual of foot heavy burden in the foot.
Description
Technical Field
The utility model belongs to the field is diagnose to medical science, concretely relates to human body balance detection device.
Background
As is well known, the balance ability decreases with age, and has a great positive correlation with brain injury, vertigo, stroke and the like, and measuring the balance ability is a simple and effective method for primarily screening risks of brain injury, vertigo, stroke and the like. In recent years, a human body balance detection device is generally adopted to measure the balance ability of a person, and the human body balance detection device has the characteristics of short examination time, convenience, safety, no wound, no external stimulation and no discomfort. The change of the gravity center track of the human body detected by the human body balance detection device is combined with the vestibular function examination, so that the vestibular function damage degree and the central compensation condition can be better known, the diagnosis rate is improved, and the device has important values on the diagnosis and the prognosis evaluation of patients with brain damage and vertigo. The brain injury, dizziness, stroke and the like generally have sequelae such as proprioception or strength loss of the whole or one side of lower limbs, so that one side or the other side of the lower limbs bears larger weight, and the detection of related data of the sequelae has great guiding significance for the diagnosis, prognosis evaluation and subsequent rehabilitation treatment of patients.
In addition, a patient with orthopedic injury to the lower extremities may exhibit the same weight on both legs when standing straight, but in a squatting position under greater pressure, the undamaged lower extremity will bear greater weight.
Such patients with general or unilateral weakness may exhibit symptoms of uncontrolled movement or an inability to successfully retrieve objects from the ground during a seated position transition. In an athletic population, loss of proprioception or strength or injury to the lower extremities on one side may result in decreased mobility from side-to-side of the body, or increased difficulty in mobility in shifting body weight on the left and right legs during squat or extension exercises. In addition, abnormal weight bearing on one leg may cause severe pain to the patient, a reduced range of motion, and particularly bending, stooping and squatting positions significantly increase ankle and knee pressure.
When the existing human body gravity center balancing instrument is used, a person to be measured stands on a balancing table during detection, the pressure sensor converts the pressure of sole change into a voltage signal, and the computer automatically records various parameters of gravity center change tracks, analyzes and evaluates the parameters. However, most of the existing human body gravity center balancing instruments measure the change track of the gravity center of the human body, can not distinguish the gravity center change of the left foot and the right foot, can not carry out the measurement and comparison of the balance of the left foot and the right foot when the two legs of a patient are upright, namely can not identify the abnormity of the load of the single foot in the left foot and the right foot, can not provide the information of the autonomous motion control symmetry of the patient, and can easily be interfered by other outside when the patient stands on the single foot to independently measure, thereby influencing the balance analysis accuracy, so that the information related to the abnormity of the load of the single foot can not be provided for the patient, and a daily diagnosis and treatment scheme or a movement suggestion can be formulated for the patient according to the information, thereby the patient can treat or correct the current abnormity of the load of the double foot, and can not ensure the basic safety of the later daily life activities, movements or leisure activities of the patient with the abnormal left foot and the right foot.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems that the gravity center change of the left foot and the right foot cannot be distinguished and the abnormity of single-foot load in the left foot and the right foot cannot be identified by the existing human body balance detection device, the utility model provides a human body balance detection device, which comprises an installation base, a left pedal and a right pedal, wherein the left pedal is arranged on the installation base and comprises a left bearing plate and a left sensor unit, and the left bearing plate is connected with the installation base through the left sensor unit; the right pedal comprises a right bearing plate and a right sensor unit, and the right bearing plate is connected with the mounting base through the right sensor unit.
Wherein the number of the left sensor unit and the right sensor unit is more than one.
The number of the left sensor units and the number of the right sensor units are 3, and the 3 left sensor units and the 3 right sensor units are arranged in a triangular mode.
The left sensor unit comprises an upper left gasket, a left pressure sensor and a lower left gasket which are sequentially connected from top to bottom, and the left bearing plate, the upper left gasket, the left pressure sensor, the lower left gasket and adjacent components in the mounting base are fixedly connected with each other;
the right sensor unit comprises an upper right gasket, a right pressure sensor and a lower right gasket which are sequentially connected from top to bottom, and the right bearing plate, the upper right gasket, the right pressure sensor, the lower right gasket and adjacent components in the mounting base are fixedly connected with each other.
The upper side of one end of the left pressure sensor is fixedly connected with the upper left gasket, and the lower side of the other end of the left pressure sensor is fixedly connected with the lower left gasket;
the upside and the upper right gasket fixed connection of right pressure sensor one end, the downside and the lower right gasket fixed connection of the other end of right pressure sensor.
And the middle parts of the left pressure sensor and the right pressure sensor are hollow structures.
The human body balance detection device also comprises an acquisition card which is arranged on the mounting base and is used for processing voltage signals and data of the human body balance detection device.
The acquisition card is composed of an amplifying circuit, an analog-to-digital conversion circuit and a microprocessor.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a human balance detection device can gather the relevant information of left and right foot focus, include the pressure information to pressure sensor, can distinguish left and right foot focus according to these information and change, can provide the information of its autonomous movement control symmetry for the person of awaiting measuring, can reach the focus orbit change and the balanced condition all around of left and right foot according to these information, whether the foot bears a burden about is symmetrical, whether have heavy burden difference etc. between two feet, also can provide daily action treatment scheme or motion suggestion for the person of awaiting measuring according to these information, let the person of awaiting measuring treat or correct the unusual of current two foot heavy burden symmetries, in order to guarantee daily life activity after, the basic safety of motion or leisure activity.
Drawings
FIG. 1 is a schematic structural diagram of a human body balance detecting device;
FIG. 2 is a schematic structural view of a left pedal or a right pedal;
FIG. 3 is a schematic diagram of the arrangement of pressure sensors for the left and right pedals;
FIG. 4 is a schematic diagram of two pressure sensors of the left pedal and the right pedal, respectively, on the X axis of the coordinate axis;
FIG. 5 is a flow chart of the processing path of the voltage signal in the acquisition card;
fig. 6 is a block diagram of the steps of the method of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, and it should be understood that the following embodiments are only used for further illustration of the present invention and should not be construed as limiting the scope of the present invention, and the modifications and adjustments made by those skilled in the art according to the present invention are not essential to the present invention.
Referring to fig. 1, the human body balance detecting device comprises a mounting base 1, a left pedal 2, a right pedal 3 and a collecting card (not shown in the figure) arranged on the mounting base 1, the left pedal 2 and the right pedal 3 have the same structure, as shown in fig. 2, the left pedal 2 comprises a left bearing plate 4 and a left sensor unit, a plurality of left sensor units can be connected between the left bearing plate 4 and the base 1, in this embodiment, the number of the left sensor units is 3, 3 left sensor units are arranged in an isosceles triangle, each left sensor unit comprises an upper left gasket 5, a left pressure sensor 6 and a lower left gasket 7 which are sequentially connected from top to bottom, a threaded hole for fixing is arranged on the left pressure sensor 6, the left bearing plate 4, the upper left gasket 5, the lower left gasket 7 and the mounting base 1 are all provided with through holes for fixing, adjacent components are fixedly connected with each other through screws, the upper left gasket 5, the lower left gasket 7 and the left pressure sensor 6 are also fixedly connected through screws, or fixed connection is realized by adopting other existing connection modes. Left side bearing plate 4 is used for bearing human weight, passes left pressure sensor 6 to human pressure on, and upper left gasket 5 and left gasket 7 are for guaranteeing that left pressure sensor 6 provides the deformation space when receiving pressure down to guarantee that left pressure sensor 6 has pressure value output, and accurate measurement pressure value. Wherein left pressure sensor 6 chooses for use current balance beam formula pressure sensor, balance beam formula sensor's both ends respectively with application of force gasket and support gasket fixed connection, as the upside and the upper left gasket 5 of 6 one end of left pressure sensor, application of force gasket fixed connection promptly, the downside and the left lower gasket 7 of the other end of left pressure sensor 6, support gasket fixed connection promptly, the upside and the 4 fixed connection of left bearing plate of upper left gasket 5, the downside and the installation base fixed connection of lower left gasket 7, left pressure sensor 6's middle part is hollow out construction, provide the atress condition for left pressure sensor internal strain piece.
The structure of the right pedal 3 is the same as that of the left pedal 2. Right footboard 3 includes right bearing plate and right sensor unit, can adopt a plurality of right sensor unit to connect between right bearing plate and the base, in this embodiment, right sensor unit number adopts 3, 3 right sensor units are isosceles triangle and arrange, every right sensor unit includes from the top down upper right gasket that connects gradually, right pressure sensor and right lower gasket, there is the screw hole for fixing on the right pressure sensor, right bearing plate and upper right gasket, right lower gasket all has the through-hole of fixed usefulness with the installation base, adjacent part passes through screw fixed connection each other, it also is through screw fixed connection with right pressure sensor, perhaps adopt current other connected modes to realize fixed connection. The right bearing plate is used for bearing the weight of a human body and transmitting the pressure of the human body to the right pressure sensor, and the upper right gasket and the lower right gasket are used for ensuring that the right pressure sensor provides a deformation space when being pressed, so that the pressure value output of the right pressure sensor is ensured, and the pressure value is accurately measured. Wherein what right pressure sensor chooseed for use is balance beam type pressure sensor, balance beam type sensor's both ends respectively with application of force gasket and support gasket fixed connection, upper right gasket and the upper right gasket of right pressure sensor one end, application of force gasket fixed connection promptly, the downside and the right lower gasket of the other end of right pressure sensor support gasket fixed connection promptly, the upside and the right bearing plate fixed connection of upper right gasket, the downside and the installation base fixed connection of gasket under the right side, right pressure sensor's middle part is hollow out construction, provide the atress condition for right pressure sensor internal strain gauge. The left and right pressure sensors are collectively referred to as pressure sensors.
The human body balance detection device has the dimensions of 400mm in length, 400mm in width and 50mm in height.
As shown in FIG. 5, the acquisition card is used to process the voltage signal and data of the human body balance detection device. In the gravity center test process of the human body, the left pressure sensor and the right pressure sensor receive weak voltage signals, the weak voltage signals are transmitted to an acquisition card in a wired or wireless mode, the acquisition card is composed of an amplifying circuit, an analog-to-digital conversion circuit and a microprocessor, the weak voltage signals are amplified through the amplifying circuit, converted into digital signals through the analog-to-digital conversion circuit and transmitted to the microprocessor for signal calculation processing, so that pressure values borne by the left pedal 2 and the right pedal 3 are calculated, and the microprocessor draws and outputs the change track of the gravity center of the human body according to the calculated pressure values.
As shown in fig. 3, 3 left pressure sensors L1, L2, and L3 are respectively built in the three left sensor cells, and 3 right pressure sensors R1, R2, and R3 are respectively built in the three right sensor cells. When the pressure sensor is actually used, a left foot and a right foot of a human body respectively stand on the left pedal 2 and the right pedal 3, each pressure sensor carries out pressure value collection, information collected by each left pressure sensor is converted into a voltage signal and then transmitted to the collection card, the collection card calculates the change of the collected pressure value according to the change of the voltage signal, and the change and the balance condition of the front, back, left and right gravity center tracks of the left foot can be calculated and output by combining the relevant data of the relative positions of the three left pressure sensors. The information collected by each right pressure sensor is converted into a voltage signal and then transmitted to the collection card, the collection card calculates the change of the collected pressure value according to the change of the voltage signal, and the change and the balance condition of the front, back, left and right gravity center tracks of the right foot can be calculated and output by combining the relevant data of the relative positions of the three right pressure sensors.
The tested person can stand on one foot, stand on two feet, squat or close eyes to carry out the test and the combined test. The multiple tests can acquire the change of the projected trajectory of the center of gravity of the human body under different conditions. Each action measures 20 seconds. Thereby calculating the moving speed of the gravity center when a single foot stands, the moving track range when two feet stand, the pressure proportion of the left foot and the right foot when the user squats, and the like. The measured data and clinical data are compared to judge and deduce the balance ability of human body.
The test subject may perform a leg weight bearing test in which most of the body weight is carried through the skeletal system and relatively little pressure is exerted on the knee and hip joints in an upright position. Increasing the depth of the squat places the knees and hips under greater pressure, making these postures more sensitive in detecting weight bearing abnormalities associated with lower limb musculoskeletal injuries. The test can observe the weight distribution of two feet measured when a patient stands at different knee joint flexion angles, if a person to be tested squats down, the knee is bent by 30 degrees, 60 degrees and 90 degrees, the leg load bearing test data is collected, finally, the weight distribution percentage chart of the patient when the left knee and the right knee are extended (0 degrees) and the knee is bent (30 degrees, 60 degrees and 90 degrees) can be obtained, and the data can be stored and clinical reports can be generated. The weight of the two legs of the normal individual in the whole range of the squatting position is kept within the equal +/-7%, and the clinical report can be compared with the data related to the normal individual to judge the body balance condition of the person to be tested.
With the coordinate axes shown in fig. 4, the left pressure sensors L2 and L3 and the right pressure sensors R2 and R3 are located on a straight line, the X-axis of the coordinate axes is set on the straight line where the left pressure sensors L2 and L3 and the right pressure sensors R2 and R3 are located, the 0 point is set at the midpoint of the connecting line of the adjacent left pressure sensor L3 and right pressure sensor R2, and the Y-axis of the coordinate axes is set perpendicular to the X-axis, so the calculation of the Y-coordinate of the left foot and the right foot can be simplified because the left foot and the right foot have two pressure sensors on the X-axis.
X and Y respectively represent horizontal and vertical coordinates, P represents a pressure value measured by the pressure sensor, and G represents a gravity value.
PL1、PL2、PL3、PR1、PR2、PR3Respectively, the pressure values measured by the corresponding L1, L2, L3, R1, R2 and R3 pressure sensors in fig. 3. x is the number ofL1、xL2、xL3、xR1、xR2、xR3And yL1、yL2、yL3、yR1、yR2、yR3And respectively represents the horizontal and vertical coordinate values of the stress positions of the pressure sensors L1, L2, L3, R1, R2 and R3 corresponding to the pressure sensors in the figure 3. GL、GRAnd G respectively represent the gravity distribution value of the left foot and the right foot and the gravity value of the human body. x is the number ofLAnd yLRepresenting the projected coordinates of the center of gravity, x, of the left footRAnd yRRepresenting the projected coordinates of the center of gravity, x, of the right footGAnd yGRepresenting the projected coordinates of the center of gravity of the human body.
The data calculation methods are described as follows:
the acquisition card calculates the measured pressure values of the three left pressure sensors L1, L2 and L3 to obtain a left foot gravity distribution value, calculates the measured pressure values, coordinates and left foot gravity distribution values of the three pressure sensors L1, L2 and L3 to obtain a left foot gravity center projection coordinate, calculates the measured pressure values of the three right pressure sensors R1, R2 and R3 to obtain a right foot gravity distribution value, and calculates the measured pressure values, coordinates and right foot gravity distribution values of the three right pressure sensors R1, R2 and R3 to obtain a right foot gravity center projection coordinate;
the formula for calculating the gravity distribution value and the gravity projection coordinate of the left foot according to the gravity center data and the coordinate change of the left foot through moment balance analysis is as follows:
the formula for calculating the gravity distribution value and the gravity center projection coordinate of the right foot similarly is as follows:
using the coordinate axes, y, shown in FIG. 4L2、yL3、yR2、yR3The value is 0, so that the calculation of the Y coordinates of the left foot and the right foot is simplified, and the calculation formula of the gravity distribution values of the left foot and the right foot and the change of the projection coordinates of the gravity center can be simplified as follows:
the acquisition card calculates the left foot gravity distribution value and the right foot gravity distribution value obtained by the calculation in the step to obtain a human body gravity value; calculating the human body weight value, the left and right foot weight distribution values and the left and right foot gravity center projection coordinates to obtain human body gravity center projection coordinates;
the calculation formula for calculating the human body gravity value and the human body gravity center projection coordinate according to the gravity center data of the left foot and the right foot is as follows:
as shown in fig. 6, the method for detecting the balance of the human body when the human body balance detection device is actually used for data acquisition includes the following steps:
s1, determining the current measuring action: such as single-foot standing, double-foot standing, squatting tests (bending of the knee at 30 degrees, 60 degrees or 90 degrees when squatting), closed-eye tests, or a plurality of condition combination tests such as single-foot closed-eye tests and the like, and recording in a book;
s2, keeping the current measurement operation for a predetermined time: if the action measurement duration time can be 20 s;
s3, the pressure sensor transmits the received voltage signal to the acquisition card: the three left pressure sensors of the left pedal and the three right pressure sensors of the right pedal respectively receive voltage signals and transmit the voltage signals to the acquisition card;
s4, the acquisition card processes the received voltage signal to calculate a measured pressure value: the acquisition card processes the received voltage signals and respectively calculates the measurement pressure values of the three left pressure sensors and the measurement pressure values of the three right pressure sensors;
s5, calculating the gravity distribution value of the left foot and the right foot and the gravity center projection coordinate of the left foot and the right foot by the acquisition card according to the measured pressure value and the coordinate of the pressure sensor: the acquisition card calculates the measured pressure values of the three left pressure sensors to obtain a left foot gravity distribution value, calculates the measured pressure values, coordinates and left foot gravity distribution values of the three left pressure sensors to obtain a left foot gravity center projection coordinate, calculates the measured pressure values of the three right pressure sensors to obtain a right foot gravity distribution value, and calculates the measured pressure values, coordinates and right foot gravity distribution values of the three right pressure sensors to obtain a right foot gravity center projection coordinate;
s6, calculating by an acquisition card according to the left and right foot gravity distribution values and the left and right foot gravity center projection coordinates to obtain a human body gravity value and a human body gravity center projection coordinate: the acquisition card calculates the gravity distribution values of the left foot and the right foot to obtain the gravity value of the human body; calculating the human body weight value, the left and right foot weight distribution values and the left and right foot gravity center projection coordinates to obtain human body gravity center projection coordinates;
s7, calculating and outputting the gravity center track change or balance condition of the left and right feet in a set time by the acquisition card according to the gravity distribution value of the left and right feet and the gravity center projection coordinates of the left and right feet: the acquisition card is combined with the left foot gravity distribution value and the left foot gravity center projection coordinate to calculate and output the front-back left-right gravity center track change and balance condition of the left foot within set time, and the acquisition card is combined with the right foot gravity distribution value and the right foot gravity center projection coordinate to calculate and output the front-back left-right gravity center track change and balance condition of the right foot within set time;
and S8, calculating and outputting the change and balance condition of the front, back, left and right gravity center tracks of the human body within a set time by the acquisition card according to the human body gravity value and the human body gravity center projection coordinate.
According to the embodiment, the moving speed of the center of gravity when the user stands on one foot, the moving track range when the user stands on two feet, the pressure proportion of the left foot and the right foot when the user squats down and the like can be obtained through calculation according to the values. The measured data and clinical data are compared to judge and deduce the balance ability of human body.
Claims (8)
1. A human balance detection device is characterized in that: the left pedal comprises a left bearing plate and a left sensor unit, and the left bearing plate is connected with the mounting base through the left sensor unit; the right pedal comprises a right bearing plate and a right sensor unit, and the right bearing plate is connected with the mounting base through the right sensor unit.
2. The human body balance detecting device according to claim 1, wherein: the number of the left sensor unit and the right sensor unit is more than one.
3. The human body balance detecting device according to claim 2, wherein: the left sensor unit and the right sensor unit are 3, and the 3 left sensor units and the 3 right sensor units are arranged in a triangular mode.
4. The human body balance detecting device according to claim 3, wherein:
the left sensor unit comprises an upper left gasket, a left pressure sensor and a lower left gasket which are sequentially connected from top to bottom, and the left bearing plate, the upper left gasket, the left pressure sensor, the lower left gasket and adjacent components in the mounting base are fixedly connected with each other;
the right sensor unit comprises an upper right gasket, a right pressure sensor and a lower right gasket which are sequentially connected from top to bottom, and the right bearing plate, the upper right gasket, the right pressure sensor, the lower right gasket and adjacent components in the mounting base are fixedly connected with each other.
5. The human body balance detecting device according to claim 4, wherein:
the upper side of one end of the left pressure sensor is fixedly connected with the upper left gasket, and the lower side of the other end of the left pressure sensor is fixedly connected with the lower left gasket;
the upside and the upper right gasket fixed connection of right pressure sensor one end, the downside and the lower right gasket fixed connection of the other end of right pressure sensor.
6. The human body balance detecting device according to claim 5, wherein: and the middle parts of the left pressure sensor and the right pressure sensor are hollow structures.
7. The human body balance detecting device according to claim 3, wherein: the device also comprises an acquisition card which is arranged on the mounting base and is used for processing voltage signals and data of the human body balance detection device.
8. The human body balance detecting device according to claim 7, wherein: the acquisition card is composed of an amplifying circuit, an analog-to-digital conversion circuit and a microprocessor.
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| CN202120607965.2U CN215272761U (en) | 2021-03-25 | 2021-03-25 | Human body balance detection device |
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| CN202120607965.2U CN215272761U (en) | 2021-03-25 | 2021-03-25 | Human body balance detection device |
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