CN106923948A - A kind of O-shaped leg apparatus for correcting of utilization muscle signals detection - Google Patents

Abstract

The invention discloses an O-shaped leg correction device using muscle sound signal detection, which belongs to the field of medical equipment. The correction device of the present invention comprises a fastening belt, an upper strap and a lower strap, the fastening belt is connected with the upper strap through a connecting ribbon, and the upper strap is connected with the lower strap through a strap connecting belt; and the lower strap is provided with a corrective airbag, the inner side of the lower strap is provided with a muscle sound signal sensor, and the fastening belt is provided with an intake and exhaust motor and a signal processing module, and the muscle sound signal sensor is electrically connected to the signal processing module ; When the muscle sound signal sensor detects that the leg is in the O-leg posture, it will inflate the correction airbag through the intake and exhaust motor to increase the correction pressure. The invention combines the muscle sound detection technology with the wearable device, which can not only use external force to correct the O-shaped leg, but also remind the user to actively maintain the correct posture. The use effect is better, and the treatment cycle of the O-shaped leg is shortened.

Description

An O-shaped leg correction device using muscle sound signal detection

technical field

The invention relates to the technical field of medical devices, and more specifically relates to an O-shaped leg correction device using muscle sound signal detection.

Background technique

O-shaped leg is a deformity disease whose main manifestation is that when the lower limbs are naturally straightened or standing, the inner malleolus of the two feet touch and the knees cannot get close. People with O-shaped legs have varus knees, and their body weight is concentrated on the inner articular surface of the knee joint, causing wear and tear on the inner cartilage surface of the knee joint, which can easily cause arthritis and even joint pain, which affects normal walking.

At present, the correction methods of O-shaped legs include surgical correction and non-surgical correction. Surgical methods are suitable for more serious patients, with quick results but higher risks. Non-surgical correction methods include correction instruments, leggings, exercises, etc. The principle of correction is basically the same, that is, by relaxing the medial collateral ligament of the knee joint, restoring the stable structure of the inner and outer sides of the knee joint, so as to make the tibia valgus and achieve the correction goal. Most of the orthodontic instruments on the market adopt the dynamic correction method, U-shaped structure, which can avoid the common peroneal nerve. It is relatively safe and effective quickly, but it is large in size, not easy to carry, and the operating conditions are limited, the fixation is not firm, and the price is relatively low. more expensive. Leggings are the most traditional and widely used correction method. Most of the materials used are non-elastic cloth belts, belts, etc. If they are tied too tightly or in the wrong position, they will easily cause pressure on the popliteal fossa, which may cause damage to superficial blood vessels and nerves. varying degrees of injury. External force correction takes a long time and can only be used as an auxiliary method. If the user does not pay attention to the walking posture, it is still difficult to achieve the same effect. Therefore, there is a need for a method that can provide external pressure to forcibly correct the patient's leg posture and remind It is a device for patients to actively maintain their own leg posture, thereby improving the treatment effect of O-shaped legs and shortening the treatment cycle.

Chinese patent application number: 201080020421.0, application date: May 4, 2010, the application discloses a body shape correcting trousers, each part of the correcting trousers is woven from fabrics of different densities, so that the leg joints can be adjusted The rotation force of the external rotation, the correction pants include: the rotation belt of the thigh, which rotates spirally from the lower abdomen to the external rotation direction of the thigh, and extends to the upper end of the kneecap; the rotation belt of the calf, which is composed of the The lower end of the kneecap rotates spirally downward toward the external rotation direction of the calf, and extends to the center of the calf, wherein the weaving density of the rotating band of the calf is relatively higher than that of other parts of the correction pants, and the thigh The weaving density of the rotating belt of the lower leg is relatively lower than that of the rotating belt of the lower leg, and relatively higher than that of other parts of the corrective pants except the rotating belt of the lower leg.

The above solution uses the tension force of the fabric to rotate the muscles, which has a certain effect, but it is still mainly corrected by external force, and it is difficult to transmit effective self-correction signals to the patient, and the treatment period is long.

Contents of the invention

1. The technical problem to be solved by the invention

The purpose of the present invention is to overcome the shortcomings of the O-shaped leg correction device in the prior art that requires a long period of correction by external force, and to provide a O-shaped leg correction device that utilizes muscle sound signal detection. The present invention combines muscle sound detection technology with wearable The combination of the O-shaped device can not only use external force to correct the O-shaped leg, but also remind the user to actively maintain the correct posture. The use effect is better and the treatment cycle of the O-shaped leg is shortened.

2. Technical solution

In order to achieve the above object, the technical scheme provided by the invention is:

An O-shaped leg correcting device utilizing muscle sound signal detection according to the present invention comprises a fastening belt, an upper strap and a lower strap, the fastening belt is connected to the upper strap through a connecting ribbon, and the upper strap is passed through the strap The connecting belt is connected with the lower strap; the upper strap and the lower strap are provided with corrective airbags, the inner side of the lower strap is provided with a muscle sound signal sensor, and the fastening belt is provided with an intake and exhaust motor and a signal processing module. The muscle sound signal sensor is electrically connected to the signal processing module; when the muscle sound signal sensor detects that the leg is in an O-leg posture, it inflates the correction airbag through the intake and exhaust motor to increase the correction pressure.

As a further improvement of the present invention, the signal processing module includes a pre-conditioning circuit board, an acquisition card and a processor; the pre-conditioning circuit board is used to denoise and amplify the collected muscle sound signal, and process The final signal is sent to the supporting acquisition card;

The acquisition card is used to convert the collected analog muscle sound signal into a digital muscle sound signal recognizable by the processor, and send the digital muscle sound signal to the processor;

The processor performs feature extraction on the muscle sound signal, and then performs pattern recognition to judge whether the user is in an O-leg posture. When it is judged to be an O-leg posture, the processor sends execution information to the signal execution module, and the signal execution module acts .

As a further improvement of the present invention, the corrective airbag includes an upper corrective airbag located in the upper strap and a lower corrective airbag located in the lower strap, and the corrective airbag communicates with the intake and exhaust motor through a trachea.

As a further improvement of the present invention, the muscle sound signal sensor is located at the lower part of the inner side of the lower strap, corresponding to the position of the soleus muscle of the calf.

As a further improvement of the present invention, there are two muscle tone signal sensors in each lower strap.

As a further improvement of the present invention, the connecting ribbon is connected to the fastening belt through a sliding buckle, and the sliding buckle can slide relative to the fastening belt.

As a further improvement of the present invention, both the upper strap and the lower strap are composed of a fixed-length strap and a stretchable strap, and the stretchable strap is an elastic cloth strap.

As a further improvement of the present invention, the stretchable belts are strip-shaped, and one stretchable belt is respectively arranged at the upper and lower ends of two adjacent fixed-length belts.

As a further improvement of the present invention, the lower strap is mainly composed of a fixed-length strap and a stretchable strap, and the lower corrective airbag and the muscle sound signal sensor are arranged on the inner side of the fixed-length strap.

As a further improvement of the present invention, the muscle sound signal sensor is a piezoelectric acceleration sensor.

3. Beneficial effect

Compared with the prior art, the technical solution provided by the invention has the following beneficial effects:

(1) A kind of O-shaped leg correcting device utilizing muscle tone signal detection of the present invention, fastening belt, upper strap and lower strap are connected in series successively to form wearing device, correcting airbag is set in upper and lower strap, through airbag Generate corrective pressure; there is a muscle sound signal sensor in the lower strap, when it is detected that it is in an O-leg posture, it will inflate the corrective airbag through the intake and exhaust motors to increase the corrective pressure, reminding the user to actively maintain the correct posture. The combination of correcting pressure and the user's active correcting consciousness has a better effect and greatly shortens the treatment cycle for O-shaped legs;

(2) A kind of O-shaped leg correcting device utilizing muscle tone signal detection of the present invention, correcting airbags are all set in the upper and lower straps, and the correcting pressure is generated by the airbags, that is, the correcting force is generated on the upper and lower sides of the knee , use the connecting ribbon to connect the upper strap and the fastening belt, which can effectively prevent the strap from slipping, so that the position of each part will not change greatly, and the accuracy of signal detection is guaranteed;

(3) A kind of O-shaped leg correction device utilizing muscle tone signal detection of the present invention, the fixed-length straps are connected by stretchable straps, and the stretchable straps have a certain degree of shrinkage, are easy to wear, and can tighten and bind the lower straps In the leg, it will not swell due to the stretching of the leg muscles, and is suitable for use in daily life;

(4) A kind of O-shaped leg correcting device utilizing muscle sound signal detection of the present invention, detection result is accurate, easy to wear, overcomes some discomforts brought to the user by the method for physically correcting O-shaped leg in the past, is convenient for the user to maintain Become a habit of self-correcting O-leg posture.

Description of drawings

Fig. 1 is the structural representation of O-shaped leg correction device of the present invention;

Fig. 2 is a schematic diagram of the distribution structure of the corrective airbag of the present invention;

Fig. 3 is a structural schematic diagram of a strap of the present invention;

Fig. 4 is a schematic diagram of the workflow of the signal processing module of the present invention;

Fig. 5 is the schematic flow chart of O-shaped leg detection method of the present invention;

Fig. 6 is a diagram of detection accuracy of O-leg state recognition by wavelet transform and VPMCD algorithm.

Explanation of the labels in the schematic diagram: 1. fastening belt; 2. sliding buckle; 3. power button; 4. power supply; 5. upper strap; 6. lower strap; 7. fixed-length strap; 8. telescopic strap; 9 1. Inlet and exhaust motor; 10. Signal processing module; 11. Connecting ribbon; 12. Band connecting belt; 13. Muscle sound signal sensor; 14. Upper correction airbag; 15. Lower correction airbag.

detailed description

In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.

Example 1

In conjunction with Fig. 1, a kind of O-shaped leg correcting device utilizing muscle sound signal detection in this embodiment includes a fastening belt 1, an upper strap 5 and a lower strap 6, all of which are ring-shaped, and the fastening belt 1 is connected to The ribbon 11 is connected with the upper strap 5, and the upper strap 5 is connected with the lower strap 6 through the strap connecting band 12. When worn, the fastening belt 1 is positioned at the waist, the upper strap 5 and the lower strap 6 are positioned at the upper and lower sides of the knee respectively, and the connecting ribbon 11 and the strap connecting strap 12 are elastic belts, which have a certain space for expansion and contraction. Further, a buckle can be provided on the connecting ribbon 11 , and the length of the connecting ribbon 11 can be adjusted through the buckle. The fastening belt 1 can be an integral elastic belt or a buckle-type connection belt that can be connected to each other through other connection methods, without specific limitation.

As shown in Figure 2, corrective airbags are arranged in the upper strap 5 and the lower strap 6, and the muscle sound signal sensor 13 is arranged on the inner side of the lower strap 6, and the muscle sound signal sensor 13 is located on the inner side of the lower strap 6. The lower part of , corresponding to the position of the soleus muscle of the calf, is used to detect the signal change of the soleus muscle of the calf. The muscle sound signal sensor 13 can be a piezoelectric acceleration sensor.

The intake and exhaust motor 9 and the signal processing module 10 are arranged in the fastening waist belt 1, the intake and exhaust motor 9 is electrically connected with the signal processing module 10, and the muscle sound signal sensor 13 is electrically connected with the signal processing module 10; the muscle sound signal sensor 13 The detected signal is transmitted to the signal processing module 10, and through the identification process of the signal processing module 10, if it is determined that the leg is in the O-shaped leg posture, an execution signal is sent to the intake and exhaust motor 9, and the intake and exhaust motor 9 is directed to correct The balloon is inflated to increase the corrective pressure. In addition, the fastening belt 1 is also provided with a power button 3 and a power supply 4, and the power button 3 is located on the front side of the fastening belt 1, which is convenient for starting the system.

The correction airbag includes an upper correction airbag 14 in the upper strap 5 and a lower correction airbag 15 located in the lower strap 6. The correction airbag communicates with the intake and exhaust motor 9 through a trachea, and the trachea can be hidden in the connecting ribbon 11.

Under normal use, there is already a certain pressure in the correction airbag, which acts as an external force correction; when the relevant signal is detected, the pressure increases, producing a certain sense of oppression, reminding the user to pay attention to the posture of their legs, so that they will have the awareness of active correction .

The soleus muscle of the calf is inserted horizontally under the gastrocnemius behind the fibula and tibia, and plays a greater role in the posture of the calf, and can better respond to changes in the posture of the calf. Therefore, it is more accurate to detect the O-shaped leg posture by using the muscle sound signal changes of the soleus muscle.

In conjunction with Fig. 4, the signal processing module 10 in the present embodiment comprises a preconditioning circuit board, an acquisition card and a processor; the preconditioning circuit board is used for denoising and amplifying the muscle sound signal collected, and processing The final signal is sent to the supporting acquisition card.

The acquisition card is used to convert the collected analog muscle sound signal into a digital muscle sound signal recognizable by the processor, and send the digital muscle sound signal to the processor.

The processor performs feature extraction on the muscle sound signal, and then performs pattern recognition to judge whether the user is in an O-leg posture. When it is judged to be an O-leg posture, the processor sends execution information to the intake and exhaust motor 9, and the intake and exhaust motor 9 Inflate the correction balloon. A solenoid valve can be arranged between the intake and exhaust motor 9 and the airbag, and the solenoid valve is electrically connected to the processor for assisting in controlling the pressure of the airbag.

Processor can preferably adopt wavelet transform and VPMCD algorithm to recognize O-type leg posture, can adopt LabVIEW and matlab to design the programs such as the acquisition of muscle sound signal, feature extraction, pattern recognition and vibration motor control/sound reminder. The above-mentioned LabVIEW and matlab programs are conventional technologies in the field of muscle sound detection, and will not be described in detail.

In this embodiment, corrective airbags are provided in the upper and lower straps, and the corrective pressure is generated by the airbags, that is, the corrective force is generated on the upper and lower sides of the knee, and the upper strap is connected with the fastening belt by connecting ribbons, which can effectively avoid The strap slides down, so that the positions of each part will not change greatly, ensuring the accuracy of signal detection.

Compared with myoelectric signals, myotone signals still have a higher accuracy rate when muscle contraction is fatigued. Due to the propagation characteristics of muscle sound signals, the sensor does not need to be fixed at certain specific positions, and may not even directly touch the skin, and the muscle sound signals can also be collected at the extremities of the exercising muscles. The muscle sound signal is less affected by the surface impedance of the receptor, less disturbed by the external electric field, and has higher detection accuracy. This program combines the O-shaped leg correction device with the use of muscle sound signals to improve the accuracy of chicken breast signal detection.

Example 2

A kind of O-shaped leg correction device utilizing muscle sound signal detection in this embodiment has the same basic structure as that of Embodiment 1, the difference being that the connecting ribbon 11 is connected with the fastening belt 1 through the sliding buckle 2, and the sliding buckle 2 It can slide relative to the fastening belt 1, and the position of the sliding buckle 2 can be adjusted within a certain range.

The upper strap 5 and the lower strap 6 in this embodiment are all made up of a fixed-length strap 7 and a telescopic strap 8, and the lower correction airbag 15 and the muscle sound signal sensor 13 are all arranged on the inner side of the fixed-length strap 7, and the telescopic strap 8 is Elastic fabric straps. Due to the elastic cloth belt, the strap has a certain degree of stretchability, which is suitable for wearing, and the detection electrode and the leg are more tightly fitted to ensure the accuracy of detection.

There are two muscle sound signal sensors 13 in each lower strap 6, and the two muscle sound signal sensors 13 can more comprehensively cover different regions of the muscles to ensure the accuracy of detection.

Example 3

A kind of O-shaped leg correcting device utilizing muscle sound signal detection of this embodiment, its basic structure is the same as that of Embodiment 2, and its difference is that: the lower strap 6 is mainly composed of a fixed-length strap 7 and a telescopic strap 8, and the lower The correction airbag 15 and the muscle sound signal sensor 13 are all arranged on the inner side of the fixed-length belt 7 . The telescopic belts 8 in this embodiment are strip-shaped, and one telescopic belt 8 is respectively arranged at the upper and lower ends of two adjacent fixed-length belts 7 .

Example 4

In conjunction with Fig. 3, a kind of O-shaped leg correction device utilizing muscle sound signal detection in this embodiment has the same basic structure as that of Embodiment 3, the difference being that the stretchable belt 8 is a corrugated airbag belt, and when the airbag belt is discharged When inflated, tighten the lower straps.

As we all know, there are many devices in life that use airbag belts for limb binding, so that the detection sensor fits the human body, such as a blood pressure monitor, which is bound to the arm without falling by filling air inward. The solution can also be inflated to tie the leg straps on the thighs, but the inflatable straps have a greater sense of restraint on the human body. Once the user squats down and the muscles are tense, it is easy to stretch the leg straps, resulting in damage to the device. not available. The exhaust-type airbag structure has a certain degree of stretchability, and enables the sensor to be attached to the surface of the human skin for accurate detection.

Furthermore, the crests and troughs of the corrugated airbag belt are both V-shaped, and the included angle of the V-shape can be controlled between 25° and 70°, preferably 35° in this embodiment. If the angle is too small, longer corrugated belts are needed to tighten, and longer corrugated belts will easily cause the leg belt to loosen; if the angle is too large, the corrugated belts on both sides will be relatively attracted to form a flat plate when exhausting. Instead of folding into layers, which would cause the leg straps to stretch out and be unusable, there is a better tightening effect in that range of angles.

The air bag belt is connected with the servo intake and exhaust controller and the intake and exhaust control motor through the air pipe. The servo intake and exhaust controller can be a solenoid valve. After the solenoid valve is opened, the airbag belt can be inflated or exhausted by the special intake and exhaust control motor. When the exhaust is completed, the solenoid valve is closed and the airbag belt remains retracted. tight state. When it is necessary to take off the leg belt, just open the solenoid valve to ventilate the intake and exhaust pipes. The external air pressure is relatively high, and it will automatically inject air into the airbag belt.

Example 5

The present invention also provides a method for correcting O-shaped legs, that is, using an O-shaped leg correcting device detected by muscle sound signals for correction. When in use, as shown in Figure 5, the process is as follows:

1) Wear the upper and lower straps 5 and 6 on the user's legs respectively, fasten the belt 1 around the waist, and adjust the position, press the switch button, start the power module, the circuit is closed, and the system starts to work ;

2) The solenoid valve is opened, the intake and exhaust control motor exhausts to the outside, and the upper correction air bag 14 and the lower correction air bag 15 are inflated to generate a certain correction pressure;

3) The muscle sound signal sensor 13 placed on the back and lower side of the calf starts to collect the muscle sound signal of the soleus muscle. When the wearer moves his legs, the muscle sound signal of the soleus muscle will change, and then send the signal to the supporting front Conditioning circuit board for signal denoising and amplification processing;

4) Then the signal is transmitted to the acquisition card, and the acquisition card processes the signal processed by the pre-circuit, so that the signal is converted into a digital muscle tone signal that can be recognized by the computer; the digital muscle tone signal is sent to the processor, and is processed by After processing by programs such as feature extraction, feature dimension reduction and pattern recognition, the processor adopts wavelet transform and VPMCD algorithm to identify two postures of O-leg and normal posture; if the patient is more serious, the normal signal can be set within a certain range of O-leg ( Relatively normal posture), in order to achieve the effect of gradual treatment.

5) When the system judges the O-shaped leg posture, the processor sends execution information to the intake and exhaust motor 9, the intake and exhaust motor 9 acts, opens the solenoid valve, inflates the correction airbag, and increases the pressure to warn the wearer. After receiving the prompt, the user should correct the walking posture in time.

6) When the system is turned off, the motor stops working, the solenoid valve opens, the outside air enters, the leg straps are stretched, and can be removed directly.

Example 6

If the telescopic belt 8 adopted is composed of two corrugated airbag belts, the difference in the use process is that in step 1), the airbag belt needs to be exhausted so that the lower strap is bound on the calf.

The above-mentioned VPMCD method is a pattern recognition method based on a variable prediction model. In this method theory, the correlation between characteristic variables in different categories is also different. In the problem of pattern recognition of human muscle sound signals, a set of feature quantities X=[X ₁ ,X ₂ ,···,X _p ] is used to describe a category. In different gesture categories, one of the feature values X _i The influence by other eigenvalues X _j (j≠i) is also different. They may have a one-to-one relationship X ₁ =f(X ₂ ), or a one-to-many relationship X ₁ =f(X ₂ ,X ₃ ,...). In order to identify different types of motion patterns, it is necessary to use training samples to establish a mathematical model that can express the intrinsic relationship between feature variables, that is, the variable predictive model (Variable Predictive Model, VPM). Then use these prediction models to predict the test samples, and use the minimum sum of squares of each type of prediction error as the discriminant function to classify.

Above-mentioned processor adopts wavelet transform and VPMCD algorithm to identify two kinds of states of O-shaped leg and non-O-shaped leg, and its method is as follows:

S1. Collect samples from the four actions of O-leg, normal standing, normal walking, and knee bending, and use the VPMCD algorithm to obtain the prediction model VPM _training ; the prediction model VPM _training is a pre-tested program stored in the system as the original matching action type ;

S2. The electrode sheet collects sEMG signals from leg movements;

S3. Perform three-layer wavelet decomposition on the collected sEMG signal using wavelet basis functions to obtain wavelet coefficients in each frequency band. The meaning of wavelet transform is shown in formula (1):

Among them: f(t)∈L ² (R), L ² (R) is the function space composed of square integrable functions on R. ψ(t) is the base wavelet or mother wavelet, a is the scaling factor, and b is the translation factor.

Then use the linear combination of different scales and different translational wavelet bases to represent the signal; as shown in formula (2):

Among them, the coefficient of each item is called the wavelet coefficient, A _I (t), D _i (t) represent the low frequency component and high frequency component of the I-th level respectively, w _aI , w _di represent the low-frequency wavelet of the i-th level respectively coefficients and high-frequency wavelet coefficients;

S4. Extracting the wavelet coefficient modulus maxima of each sub-frequency band after wavelet decomposition as feature vectors. In this way, the eigenvalue matrix of each category can be obtained, and the internal correlation between the eigenvalues can be verified by cross-correlation analysis during the test;

S5. Use the trained prediction model VPM _training to classify and identify the eigenvalue matrix, and various types of leg movements can be determined from the data results of the VPMCD classifier.

Using wavelet transform and VPMCD algorithm to identify the two states of O-leg and non-O-leg has higher accuracy than other identification methods. As shown in Figure 6, this method establishes a variable prediction model through parameter estimation to avoid The ANN structure, type selection problem and iterative process are discussed. In addition, in the selection of model type and parameters, it depends on the minimum sum of squares of prediction errors between the predicted value and the actual value, thus avoiding the dependence on prior knowledge and being more objective. Therefore, this method has better VPMCD training ability and classification performance, and is an effective and reliable method for pattern recognition of muscle sound signals.

The above schematically describes the present invention and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structural mode and embodiment similar to the technical solution, it shall all belong to the protection scope of the present invention .

Claims (10)

1. an O-shaped leg correction device utilizing muscle tone signal detection, is characterized in that: comprise fastening belt (1), upper binding belt (5) and following binding belt (6), described fastening belt (1) Connect with the upper strap (5) by connecting the ribbon (11), and the upper strap (5) is connected with the lower strap (6) by the strap connecting strap (12); on the upper strap (5) and the lower strap ( 6) A corrective airbag is provided inside, a muscle sound signal sensor (13) is provided on the inner surface of the lower strap (6), and an intake and exhaust motor (9) and a signal processing module (10) are provided in the fastening belt (1) , the muscle sound signal sensor (13) is electrically connected with the signal processing module (10); Inflate to increase corrective pressure. 2. a kind of O-shaped leg correcting device utilizing muscle tone signal detection according to claim 1, is characterized in that: described signal processing module (10) comprises preconditioning circuit board, acquisition card and processor; The pre-conditioning circuit board is used to denoise and amplify the collected muscle sound signal, and send the processed signal to the supporting acquisition card; The acquisition card is used to convert the collected analog muscle sound signal into a digital muscle sound signal recognizable by the processor, and send the digital muscle sound signal to the processor; The processor performs feature extraction on the muscle sound signal, and then performs pattern recognition to judge whether the user is in an O-leg posture. When it is judged to be an O-leg posture, the processor sends execution information to the signal execution module, and the signal execution module acts . 3. A kind of O-shaped leg correction device utilizing muscle sound signal detection according to claim 1, characterized in that: the correction airbag comprises an upper correction airbag (14) located in the upper strap (5) and an upper correction airbag (14) located in the lower strap (5). The lower correction airbag (15) in the bandage (6) communicates with the intake and exhaust motor (9) through the trachea. 4. A kind of O-shaped leg correction device utilizing muscle sound signal detection according to claim 1, characterized in that: said muscle sound signal sensor (13) is positioned at the bottom of the inner side of the lower strap (6), corresponding to At the position of the soleus muscle of the calf. 5. A kind of O-shaped leg correction device utilizing muscle sound signal detection according to claim 4, characterized in that: there are two muscle sound signal sensors (13) in each lower strap (6). 6. A kind of O-shaped leg correction device utilizing muscle sound signal detection according to claim 1, characterized in that: the connecting ribbon (11) is connected with the fastening belt (1) through a sliding buckle (2), and the sliding The buckle (2) is able to slide relative to the fastening belt (1). 7. A kind of O-shaped leg correction device utilizing muscle sound signal detection according to claim 1, 4 or 5, characterized in that: the lower strap (6) is mainly composed of a fixed-length strap (7) and a telescopic strap (8) form, telescopic belt (8) is elastic cloth belt. 8. A kind of O-shaped leg correcting device utilizing muscle sound signal detection according to claim 7, characterized in that: said stretchable belt (8) is strip-shaped, and two adjacent fixed-length belts (7) A telescopic belt (8) is respectively arranged at the upper and lower ends. 9. A kind of O-shaped leg correction device utilizing muscle sound signal detection according to claim 7, characterized in that: said upper strap (5) and lower strap (6) are all made of fixed-length straps (7) Formed with telescopic belt (8), lower correcting air bag (15) and muscle sound signal sensor (13) are all arranged on fixed-length belt (7) inner side. 10. An O-shaped leg correction device utilizing muscle sound signal detection according to claim 9, characterized in that: the muscle sound signal sensor (13) is a piezoelectric acceleration sensor.