TWI491379B - Wearable posture measurement apparatus - Google Patents

Description

Wearable attitude dynamic sensing device

The invention is related to an attitude dynamic sensing device. More specifically, the present invention relates to a wearable posture dynamic sensing device.

With the gradual ageing of society, the number of patients with mobility impairments, such as mobility disorders, feelings of slowness or mental deterioration, has increased year by year. For example, in patients with joint pain, clinically, the patient needs to be rehabilitated through joint flexion exercises. When rehabilitating, it is not easy to measure the movement of the patient's limbs. It is necessary to rely on experienced physicians or rehabilitation teachers to use the protractor to measure multiple times in order to obtain accurate information to understand the movement ability of the patient's limbs. In the previous exercises, cumbersome measurements and assessments are required, and most physicians or rehabilitation practitioners perform rehabilitation in a one-to-many manner. The various factors cause the patient to fail to obtain perfect and time-saving care and services, and the patient is prone to loss of patience, thereby affecting the effect of rehabilitation. In addition, in the posture correction training, the same problem as the joint flexion exercise is also encountered.

In order to solve the above problems, many related products have appeared on the market. For example, Nenadic et al. used a carbonaceous ink to coat a flat panel in 2011 and a flat panel to measure the bending angle of the elbow. However, due to the hard texture of the plate, the approach proposed by Nenadic et al. is not suitable for measuring the movement of the limb. For details, please refer to PT Wang, CEKing, AH Do, Z. Nenadic, Medical Engineering & Physics , Vol. 33, pp. 546-552, 2011. As another example, Yeo et al. used an optical linear encoder in 2011 to measure the bending angle of the elbow. However, the optical linear encoder is hard and needs to be additionally connected with a signal transmitter. The solution proposed by Yeo et al. still has room for improvement. For details, please refer to CKLim, Z. Luo, IMChen, SHYeo, Sensors and Actuators A , Vol. 166, pp. 125-132, 2011. By way of example, Rossi et al. proposed in 2004 to use carbon-containing rubber to measure the bending angle of the elbow or knee. However, there is a hysteresis between the strain of the carbon-containing rubber and the corresponding resistance, and the bending angle of the limb cannot be exhibited. For details, please refer to F. Lorussi, W. Rocchia, EPS cilingo, A. Tognetti, D. Rossi, IEEE Sensors Journal , Vol. 4, No. 6, pp. 807-818, 2004. More specifically, in Sung et al., in 2004, stainless steel fibers and elastic fibers were woven into elastic conductive cords, and when stretched or recovered through the elastic conductive cords, they rubbed against each other to cause a change in electrical resistance. However, the strain of the elastic conductive rope and the corresponding electrical resistance are not easily reproduced, and the bending angle of the limb cannot be exhibited. For details, please refer to M. Sung, K. Jeong, G. Cho, Lecture Notes in Computer Science , Vol. 5612, pp. 784-792, 2009.

From the above description, it can be understood that although the related products have been applied to measure the movement of the limbs, there are still many problems in these products, which affect the applicability. Therefore, it is indeed necessary to design a novel attitude dynamic sensing device, which is more suitable for measuring the movement of a limb than the related products. Moreover, the sensing device can measure the movement of the limb instantly and accurately, and brings excellent efficiency to related treatments such as joint flexion exercises or posture correction training.

It is an object of the present invention to provide an attitude dynamic sensing device. The sensing device is stretched or recovered by the conductive textile during the movement of the limb to generate a corresponding resistance value, and the movement of the limb can be measured instantly and accurately. Compared with the current related products, the sensing device is more suitable for measuring the movement of the limb. Once the sensing device is applied to a related treatment such as joint flexion exercise or posture correction training, it will bring excellent efficiency.

Accordingly, in order to achieve the foregoing and/or other objects, the present invention provides a wearable posture dynamic sensing device that is worn on a limb of a subject to detect a dynamic physiological signal of a limb of the subject. The sensing device comprises: a sensing module contacting the limb of the subject and having conductive textiles, electrodes and a non-conductive substrate, wherein the conductive textile is provided for movement of the limb of the subject Stretching or recovering to produce a corresponding resistance value, the electrode is connected to the conductive textile for receiving the resistance value generated by the conductive textile, the non-conductive substrate is for carrying the conductive textile and the electrode; and the transmission module is connected to the sensing The electrode of the module is configured to transmit the resistance value generated by the electrode received from the conductive textile; and the stabilization module is connected to the non-conductive substrate of the sensing module to maintain the motion of the sensing module on the subject Time is stable.

In the present invention, since the conductive textile is provided to stretch or recover during the movement of the limb of the subject to generate a corresponding resistance value, the sensing device of the present invention is instantaneous by the corresponding resistance value and The motion of the limb is measured by accurately detecting the dynamic physiological signal of the limb of the subject. Moreover, the sensing device of the present invention can be applied to a related treatment such as joint flexion exercise or posture correction training, and can bring about excellent efficiency.

Please refer to the first and second figures, which illustrate a wearable posture dynamic sensing device according to a preferred embodiment of the present invention. The wearable posture dynamic sensing device of the preferred embodiment is worn on the limb of the subject to detect the dynamic physiological signal of the limb of the subject. As shown in the first and second figures, the wearable posture dynamic sensing device of the preferred embodiment includes a sensing module (1), a transmission module (2), a stabilization module (3), and an analysis module ( 4).

The sensing module (1) is a limb that is in contact with the subject. Generally, the sensing module (1) is attached directly to the limb or directly attached to the limb, such as clothes, pants or sock. As shown in the first figure, the sensing module (1) has a conductive textile (11), an electrode (12) and a non-conductive substrate (13).

The electrically conductive textile (11) is provided to stretch or recover to produce a corresponding resistance value. Among them, the term "stretching" in this paper is to guide the electro-textile (11) to extend from the original length to a length under the action of external force; the term "return" in this article is to guide the electro-textile (11) after self-extension after the release of external force. The length returns to the original length. Thus, in the preferred embodiment, the electrically conductive textile (11) is provided to stretch or recover upon movement of the limb of the subject to produce a corresponding resistance value. The conductive textile (11) is preferably along the limb of the subject. In this way, when the subject's limb is bent, the conductive textile (11) will be stretched to produce a corresponding resistance value; conversely, when the subject's limb returns to the original posture, the conductive textile ( 11) Respond to the ground, and the corresponding resistance value is generated. The motion of the limb can be measured by detecting the dynamic physiological signal of the limb of the subject by the two corresponding resistance values. The dynamic physiological signal includes a bending angle, a bending time, a bending frequency or a bending time of a limb of the subject.

The conductive textile (11) is used for the movement of the limb of the subject, and its elongation is generally about 0 to 300%, which is sufficient (the "elongation" here refers to the difference between the length after extension and the original length. The ratio of the original length). Based on the above, the corresponding resistance value generated by the conductive textile (11) has a rate of change of about 10 ^-3 to 10 ³ Ω/%, and the "rate of change" herein refers to the corresponding resistance value deduction after extension. The ratio of the difference in resistance value corresponding to the original length to the elongation. The conductive textile (11) may be an elastic fiber and a conductive fiber woven through the general textile industry. Further, the elastic fiber and the conductive fiber may be woven into different forms, such as a solid or hollow structure textile of any form such as a primary yarn rope, a secondary fabric, or a three-dimensional fabric. Elastic fibers can be polyurethane elastic fibers (eg: Lycra ^® spandex commercially available), but is not limited thereto. The conductive fibers may be metal fibers, metal-plated fibers, carbon fibers or organic conductive fibers, but are not limited thereto.

The electrode (12) is connected to the conductive textile (11) for receiving the resistance value produced by the conductive textile (11). The electrode (12) is preferably made of a metal material, but is not limited to which metal material.

The non-conductive substrate (13) is a conductive textile (11) and an electrode (12) for reducing friction between the conductive textile (11) and the limb during movement of the limb of the subject. In this way, the limb can be protected from trauma, and the frictional damage of the conductive textile (11) can be avoided. Therefore, the non-conductive substrate (13) preferably has a low coefficient of friction, such as a sheet material (e.g., a commercially available PTFE sheet) or a film.

As shown in the first figure, the transmission module (2) is an electrode (12) connected to the sensing module (1) for transmitting the resistance value generated by the electrode (12) received from the conductive textile (11). The transmission module (2) may be a water-washable and electromagnetic wave-proof wire, but is not limited thereto. However, the wire for water-washable and electromagnetic wave-proof interference has been described in detail in the Republic of China Invention Patent Publication No. I282559, and will not be further described herein. On the other hand, in some possible implementations, the transmission module (2) may also replace the aforementioned wires with a wireless transmission system, and wirelessly connect to the electrodes (12) of the sensing module (1) for transmitting electrodes. (12) A resistance value generated from the conductive textile (11).

As shown in the first and second figures, the stabilizing module (3) is a non-conductive substrate (13) connected to the sensing module (1) for maintaining the sensing module (1) on the limb of the subject. Stable during exercise. The stabilizing module (3) has a fixing element (31) and a tension adjusting element (32).

The fixing component (31) may be sewn and attached to the two ends of the non-conductive substrate (13) for attaching to the limb of the subject and fixing the sensing module (1). The fixing member (31) may be, but not limited to, made of a material such as textile, plastic or rubber. In the preferred embodiment, the fixing element (31) It is a ribbon woven cotton fabric. In addition, the subject can adjust the length and width of the fixing member (31) so that the wearable posture dynamic sensing device can fit and comfortably wear on the limb.

The tension adjusting member (32) is disposed on the fixing member (31) for adjusting the tension of the fixing member (31) such that the fixing member (31) stably conforms to the limb of the subject. The tension adjusting member (32) may be a fastening tape or a buckle, but is not limited thereto. Generally, the adhesive has a male adhesive strip and a female adhesive strip for bonding to each other, whereby the fixing member (31) will stably conform to the subject's limb.

The analysis module (4) is connected to the transmission module (2) for receiving the resistance value received from the transmission module (2) and analyzing and converting into a dynamic physiological signal.

Please refer to the third figure, which is a schematic diagram of the wearable posture dynamic sensing device of the preferred embodiment being worn on the limb of the subject. In the third figure, the limb is an elbow. In addition, the wearable posture dynamic sensing device of the preferred embodiment can also be worn on the ankle or knee of the subject.

Please refer to the fourth to sixth figures, which respectively illustrate the dynamic physiological signals generated by the wearable posture dynamic sensing device of the preferred embodiment after being continuously bent by the elbow, the knee and the ankle of the subject. It is apparent that the wearable posture dynamic sensing device of the preferred embodiment can instantaneously and accurately measure the bending angle, bending frequency, bending time, and bending times of the limb of the subject. More importantly, the wearable posture dynamic sensing device of the preferred embodiment has excellent reproducibility.

Based on the description of the above preferred embodiments, the wearable posture dynamic sensing device of the present invention can be instantaneously and accurately measured by stretching or returning the conductive textile (11) during the movement of the limb to generate a corresponding resistance value. The movement of the limbs. When the sensing device is applied to a related treatment such as joint flexion exercise or posture correction training, it brings excellent efficiency and reproducibility compared to the eye. For the related products, this sensing device is more suitable for measuring the movement of the limb.

Obviously, many modifications and differences may be made to the invention in light of the above description. It is therefore to be understood that within the scope of the appended claims, the invention may be The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention; any equivalent changes or modifications made without departing from the spirit of the invention should be included in the following claims. Inside.

(1)‧‧‧Sensing module

(11)‧‧‧Electrical textiles

(12) ‧ ‧ electrodes

(13)‧‧‧ Non-conductive substrates

(2) ‧‧‧Transmission module

(3) ‧‧‧stability module

(31)‧‧‧Fixed components

(32)‧‧‧Tensor adjustment components

(4) ‧ ‧ analysis module

The first figure is a schematic diagram showing a combination of a sensing module, a transmission module and an analysis module of a wearable posture dynamic sensing device according to a preferred embodiment of the present invention.

The second figure is a schematic diagram showing a stabilization module of the wearable posture dynamic sensing device of the above preferred embodiment.

The third figure is a schematic view showing that the wearable posture dynamic sensing device of the above preferred embodiment is worn on the elbow of the subject.

The fourth to sixth figures are analysis charts showing the dynamic physiological signals generated by the wearable posture dynamic sensing device of the above preferred embodiment after being continuously bent by the elbow, the knee and the ankle of the subject.

(11)‧‧‧Electrical textiles

(13)‧‧‧ Non-conductive substrates

(2) ‧‧‧Transmission module

(31)‧‧‧Fixed components

(32)‧‧‧Tensor adjustment components

(4) ‧ ‧ analysis module

Claims (8)

A wearable posture dynamic sensing device is worn on a limb of a subject to detect a dynamic physiological signal of a limb of the subject, and the sensing device includes: a sensing module that is in contact with the subject a limb of a tester having conductive textiles, electrodes, and non-conductive substrates, wherein the conductive textile is woven from elastic fibers and conductive fibers for stretching or stretching during movement of the subject's limbs Responding to generate a corresponding resistance value having a rate of change of 10 ^-3 to 10 ³ Ω/%, the electrode being connected to the conductive textile for receiving a resistance value generated by the conductive textile, the non-conductive The substrate carries the conductive textile and the electrode; the transmission module is connected to the electrode of the sensing module for transmitting the resistance value generated by the electrode from the conductive textile; and the stabilization module is connected to the The non-conductive substrate of the sensing module is configured to maintain stability of the sensing module during movement of the subject's limbs. The wearable attitude dynamic sensing device of claim 1, further comprising: an analysis module connected to the transmission module, configured to receive the resistance value received from the transmission module and analyze and convert the Dynamic physiological signal. The wearable posture dynamic sensing device according to claim 1, wherein the elastic fiber is a polyurethane elastic fiber. The wearable posture dynamic sensing device according to claim 3, wherein the conductive fiber is a metal fiber, a metal plated fiber, a carbon fiber or an organic conductive fiber. The wearable posture dynamic sensing device according to claim 1, wherein the transmission module is a wire that is washable and resistant to electromagnetic interference. The wearable attitude dynamic sensing device of claim 1, wherein the stabilization module has a fixing component and a tension adjusting component, and the fixing component is disposed at two ends of the non-conductive substrate for bonding to The subject's limb is fixed to the sensing module, and the tension adjusting component is disposed on the fixing component for adjusting the tension of the fixing component. The wearable posture dynamic sensing device of claim 1, wherein the non-conductive substrate has a low coefficient of friction. The wearable posture dynamic sensing device according to claim 1, wherein the dynamic physiological signal is selected from the group consisting of a bending angle, a bending number, a bending frequency, and a bending time of a limb of the subject. group.