TWI418339B - Leg-protection system via continuously examining the foot pressure - Google Patents

Description

Foot protection system that senses foot strength

The invention relates to a foot force sensing type foot protection system and a method thereof, in particular to a part of the original insole, which can run and walk, and can quickly measure the distribution of the pressure and shear force of the sole. And change, in order to determine the normal and abnormal conditions of foot pressure, and can be used as a pedometer, to instantly understand the gait situation, provide information for adjustment and correction, to achieve the function and effect of the foot protection, and can be used for correction and Reference for the manufacture of cushioned insoles.

Walking and running is the most basic and simple way of moving for most people. Even after inventing the vehicle, the short-distance movement is still relying on our feet to reach where we are going, so go and run. It can be said that it is the most common exercise of human beings. Walking and running have many benefits to the body. They can strengthen cardiovascular function, improve lung function, lose weight, maintain better physical fitness, and slow down aging. It is a kind of aerobic exercise, but if it is for fitness, it ignores its own differences. Sports injuries can be worth the loss, while walking and running are different. Through mechanical analysis, the one-step cycle of walking is the time when both feet support the body weight for 1/2, while the running is instantaneous, supporting the body weight through one foot. And the contact time between the foot and the ground during running is only one-third of the walking time, and the contact time is short, thus resulting Large impact and ground reaction. The impact force of walking on the ground is 1.2 times of the weight, while the impact force during running is about 3 times of the weight, so the improper walking and running posture is quite easy to cause foot injury. In the general public, at least 80% of people have foot problems, and the ankle and foot injuries can change the mechanics of the gait, which in turn affects the joints of other lower limbs and may lead to joints in related parts. Produce lesions; the problems of the above-mentioned feet can usually be corrected by appropriate evaluation, treatment and care, but for the human foot, the real damage should be the pressure and shear force that exceeds the foot. The limit of the load can be applied, so local high pressure and shear force are the main causes of problems in the structure of the foot. At present, various kinds of plantar pressure measuring devices on the market have the following four situations:

1. The existing plantar pressure measuring equipment belongs to medical use, which is expensive, and the cost of consumables and maintenance is high.

2. The existing plantar pressure measurement system has complex functions, and it is difficult for non-professionals to operate and analyze.

3. It is not easy to quickly and accurately evaluate the pressure of the sole of the shoe in the walking shoe, and it is not directly connected with mobile devices such as mobile phones.

4. It is not used as a monitoring alert for immediate and long-term detection of whether the user is walking or jumping, nor does it provide the function of protecting the foot.

Therefore, China Patent Publication No. I23338 "A Planar Pressure Test Structure Gain Improvement" invention patent discloses that the structure is a method in which a test memory die, a mesh and a uniformly distributed shape convex template are stacked on each other. For patients to walk, test Recalling the accumulation of gravity and time accumulation during the walking movement of the foot, the bottom of the test memory die is densely combined with the convex body of the mesh and the template to form a concave pattern, and according to the size and depth of the concave pattern. , the size of the distribution area, the change of density, determine the difference in gait of the foot walking, for medical and sports assessors to analyze the user's force size, position and the diameter of the travel pressure center, in order to facilitate the foot accessories such as insoles Evaluation and production of shoes.

In addition, China Patent Patent No. 386616, "Portable Single-Chip Microcomputer Controlled Continuous Dynamic Foot Pressure Measurement Device", discloses a portable single-chip microcomputer controlled continuous dynamic foot pressure measurement device. The film piezoresistive pressure sensing component is attached to the insole to enable dynamic measurement of the pressure change of the sole of the user during standing or walking. The measured foot pressure signal is amplified and filtered by the signal, and then converted by analog/digital signals. It is transmitted to the foot pressure measurement control unit attached to the waist. The microcomputer control software instantly stores the foot pressure signal in the static memory, and simultaneously calculates the difference between the two feet and the physiological feedback function through the speaker. The LCD display can also display the difference in load on both feet as a basis for quantitative evaluation.

U.S. Patent Publication No. 6,360,597 B1, "Infrasound Remote Gait Analysis System" invention patent, discloses a gait analysis system that includes an object that can be placed in a shoe, in the process of walking, collecting gait Data, and within the plug-in object, a power sensor is clearly planned in each hole and connected to the processor, and the processor can calculate the gait curve. The processor includes a portable remote control transmitter, is connected to the sensor, and receives the output signal of the sensor and the analog signal of the conversion sensor, and then the signal of the sensor Provided to a computer or similar work platform.

Among the above three patents, all of them belong to gait analysis and measurement, mainly used for medical analysis, and are not recorded with instant foot protection and long time to achieve the function of foot care.

In view of the prior art in use, there are still deficiencies. The present invention is to solve the conventional fixed pressure plate, and can only measure the foot pressure in a fixed amount, but can not monitor for a long time and continuously measure the walking and running dynamics. The lack of plantar endurance and the unsatisfactory nature of the above three patents, and the addition of the measured foot pressure to the foot protection function, the present invention provides a removable and highly maneuverable The foot protection device and method for continuously measuring the pressure of the sole and the shear force are referred to the first figure. The present invention is a removable foot protection device, which comprises an upper pad 101, a flexible substrate 102, and an array pressure. And a shear sensor 103, a microprocessor 104, an analog/digital converter 105, a wireless or mesa network transmitter 106, a power supply 107, a lower pad 108, and a power supply cover 109. The upper pad 101 and the lower pad 108 mainly cover the above-mentioned array type pressure and shear sensor, multiplexer, signal amplifying circuit, analog/digital signal converter, and microprocessor. The upper pad 101 and the lower pad 108 also bear most of the force of the foot, and transfer part of the foot force to the above-mentioned array pressure and shear sensor for sensing, which is beneficial to the sensor. Reliability and durability. The preferred embodiment for the device is based on the basic process technology of the organic thin film transistor in the prior art "soft electronic technology" in the field of microelectronics. Please refer to the second figure for the array pressure in the first figure. And a single sensor in the shear sensor 103, basically by A transistor is connected with a resistor or a capacitor that can sense pressure and shear force. The structure and manufacturing method of the transistor are described as follows: the aluminum 202 is plated on a deformable soft material-plastic substrate 201, and is processed by a yellow light process. The patterning is used as a gate electrode, and a PI (polyimide) polymer insulating layer 203 is deposited on the aluminum 202 layer by spin coating, and the organic semiconductor layer 204 is printed on the PI layer by vapor deposition. The source and drain electrode films 205 are formed on the organic semiconductor layer 204 by screen printing, and the high dielectric inorganic insulating layer 206 such as PI is spin-coated on the source and drain electrode films 205 as a protective layer. Schematic diagram, as shown in the second figure - (a). Based on the above basic process, design and manufacture, the pressure and shear sensor arrays are fabricated in the same process, or the finished pressure and shear sensor finished products are directly arrayed in the soft board. The foot protection device for completing the replaceable array type pressure and shear sensor is mainly characterized by being easy to carry and low cost, which can improve the deficiencies of the prior art, reduce the manufacturing cost, and the array pressure and The shear sensor and circuit are packaged in a soft board to protect against moisture and moisture. The single pressure and shear sensor are schematic, as shown in Figure 2-(b). The sensor can be achieved by a resistive load in which the conductive metal film 208 and the conductive rubber 207 form a sandwich structure or a capacitive load formed by the dielectric rubber. For the row multiplexer and column decoder (not shown in the second figure) which form these single pressure and shear sensors in an array form, refer to the past Republic of China patent such as the announcement number: 583592 A capacitive fingerprint reading chip, or an array type image sensor or a general memory reading device, etc., is a technique commonly used by those skilled in the art and will not be described again. About the power supply 107 is Refers to the installation of the battery with the power management IC, or the use of a heel to step on the piezoelectric power module to generate power (MIT, Media Lab) or use the heel to step on the dielectric elastomer power generation module (SRI International, Dielectric elastomers), To reduce or eliminate the need for a battery. The transceiver 106 refers to an existing wireless communication standard module, such as Bluetooth, ZigBee, WiFi, RFID, etc., or a dedicated wireless communication module developed by itself, as long as it can provide a wireless communication method with low power loss. Alternatively, a near-body network can be used instead of wireless communication.

When the user wants to use, the footrest device for the removable foot pressure and the shear force sensing is placed in the shoe to become a part of the original insole, and the walking and running actions are performed. When the pressure and shear force of the foot walking and running are too large, the joint of the foot will be injured, and the joint of the foot will bear the pressure of the weight and the force of the foot and the load of the shear force, as shown in the third figure. In particular, if the shearing force is too large, it may cause injury or fracture of the joint of the foot. Therefore, according to the bone structure of the foot, as shown in the fourth figure, the device is divided into the phalanges 401, the tibia 402, the cuneiform 403, and the boat. The bone 404, the talus 405, the tibia 406, the calcaneus 407 and the tibia 408, wherein the humerus 402 has five pieces located below the thumb of the foot from the inside to the outside, respectively, the first, second, third, fourth and fifth tibia. According to pages 338-339 of "Modern Sports Biomechanics" jointly edited by Tsinghua University, Beijing Normal University and Shanghai Sports Research Institute, the pressure load ratio is 1:0.76:0.44:0.29 under normal gait. :0.21, the first metatarsal pressure is the largest, followed by two, three, four, and five tibia, respectively, and the shear value τ (weight/mm ² ) are 0.25, 0.29, 0.33, 0.16, and 0.09, respectively. The tri-bone shear stress is the largest, and the first metatarsal bone, and finally the fourth and fifth metatarsal bones, according to the master's thesis published by the National Institute of Physical Education, "The study of biomechanics of flat arch and normal arch walking and running", 27~29 The page points out that the division of general blocks is divided according to the needs of the research purposes. The authors also organize the methods for partitioning the blocks at home and abroad. The data of the compilation are as follows:

Through the assembly and application of the above information, and because of the bones of the forefoot of the normal person's foot, the first, second, third, fourth and fifth metatarsal bones form a small arch, so the device can accurately measure the sole of the foot. For pressure and shear and foot valgus or varus, the left foot is taken as the case: the inside of the sole of the foot (the thumb and the first metatarsal) 503, the center of the sole of the foot (the second and third metatarsal) 504 and the outside of the sole of the foot (the first Four and five tibia) 505, which is calculated according to the ratio of the above normal gait, the pressure ratio is 1:0.6:0.25, and the shear stress τ (weight/mm ² ) is 0.25, 0.31, 0.125, respectively. The heel part of the heel, because the heel is walking or running, because of personal habits, the heel strikes the ground, there are differences, so it is divided into the heel inner 501 and the heel outer 502 two blocks, the heel can be measured separately The gait of the inner side and the outer side of the ground to determine the situation of inversion and eversion. The two blocks normally bear the pressure and shear force of the heel, so the ratio is equal, and according to the written by Li Jiaxiong Chinese Physician As indicated on page 198 of "Knee Foot Diagnosis" The ratio of their heel and forefoot tolerance of 3.5: 1, as shown in FIG sixth. From the above evaluation, the foot bottom is divided into five blocks, and the distribution values of the plantar pressure and the shear force can be easily and accurately measured, and can be displayed easily and quickly for the user to understand the gait condition. As shown in the fifth figure.

The array pressure and shear sensor 103 of the device of the present invention is respectively disposed at the position of five blocks in the foot guard, and the array pressure and shear sensor 103 utilizes 9 pressure sensors. The composition comprises a cell through four pressure sensors, as shown in the seventh figure. As shown in the eighth figure, it is better to use a capacitive pressure sensing unit, as shown in the seventh figure, the upper electrode is as shown in FIG. When the oblique part is under pressure, the dielectric rubber is compressed, and it will be close to the four lower electrodes, causing a change in capacitance, and the upper electrode is subjected to lateral force or shear force, which will move laterally to the shear force, and also cause four capacitors. Change, so when the four capacitors change the same, it is considered that there is only pressure. When the four capacitors vary, the shear force is displayed. The shear force is proportional to the difference between the four capacitors. Reaching their respective independent quantities The function of measuring pressure and shear force is then converted into a voltage by a signal amplifier through a signal amplifier, and connected to the analog/digital converter 105 by the flexible substrate 102, and the analog signal is converted into a digital signal to the micro The processor 104 stores the memory, and then converts the digital signal to the analog signal, and transmits the signal data to the mobile phone or the computer via the wireless transmitter 106 to complete the operation of the foot pressure and the shear strength measurement. The measurement operation sets the personal threshold value according to the personal daily activity frequency 909 as the basis for setting the dynamic mode change, and the dynamic mode can be divided into normal walking 910, fast walking and running 911 and walking 912 mode, as shown in the ninth figure. Show that its formula is as follows:

(1) Sports mode

(2) Normal mode

(3) Walking mode

In the formula 1-1 to 1-3, T is the total time, and the calculation formula is , f is the average number of steps per unit time - frequency, and N is the total number of steps taken. Since the sole of the device is divided into five blocks, as shown in the sixth figure, and the distribution of the pressure and the shear force is independently measured, after the start of the above function, the formula can be automatically determined and independently Calculate the force of each part, and the formula is as follows:

(1) Formulas for pressure and shear force of each block:

A. Pressure of the X block ( P _X )

B. Average pressure of the X block ( P _Xave )

In 1-4 and 1-5, N is the total number of steps in walking, n is the number of pressure sensors in each block of the foot, and _X in P _Xi is a variable, which is A area 501, respectively. The pressure of each block of zone B 502, zone C 503, zone D 504, or zone E 505, and P _Xave is zone A 501, zone B 502, zone C 503, zone D 504, or zone 505 of zone E, respectively. The average pressure of the block.

C. Shear force of each block ( τ _X )

D. Average shear of each block ( τ _Xave )

In 1-6 and 1-7, N is the total number of steps in walking, n is the number of shear sensors in each block, and _X in τ _Xi is a variable, which is A, 501, B, respectively. 502, C zone 503, D zone 504, or E zone 505 shearing force, and τ _Xave is A zone 501, B zone 502, C zone 503, D zone 504, or E zone 505 blocks Average shear.

(2) Total pressure

A. Total pressure acting on the foot ( P _T )

In the formula 1-8, P _Ai ~ P _Ei is the pressure acting on each block of the plantar, and n is the number of pressures of each block.

B. Total average pressure of the foot ( P _Tave )

In the formula 1-9, P _T is the total sole pressure of the foot, and N is the total number of steps of walking.

C. Total instantaneous pressure of the foot ( P _L )

In 1-10, T is the total time of action, and its calculation formula is And P _Tave shows the total average pressure of the sole.

Calculated by the above formula, through the professional doctors of the medical institution, select the normal person's activity status for one day, and obtain the average value of walking and running pressure and shearing force, and take the individual weight value plus or minus 5 kg, set as the standard range. One color - green. In the average user, after the measured value is normalized by the weight, if the standard area is exceeded, the display signals of walking and running will display the second color-red and the third color-yellow signal distribution, such as walking: Pressure - red, shear - yellow; running: pressure - red, shear - yellow, pressure and shear at the same time appear abnormal, the fourth color - orange signal, the normal part is green for users Judging the normal and abnormal condition of the plantar force, and immediately understanding the gait situation.

In summary, the present invention can utilize not only the heel inner-A area 501, the heel outer-B area 502, the sole inner-C area 503, the sole center-D area 504, and the outer side of the foot-E area 505, but also the independent measurement. The function of walking and running pressure and shearing force calculates and analyzes the data at the same time through the design program, and automatically displays the user with color display by formula, and can measure the average user's running and walking time for a long time. The distribution and change of the bottom force and the pressure, and can provide children aged 3 to 6 who are just beginning to learn to walk, correct the walking posture gait and whether the adolescent or adult walking posture has abnormal force. And can monitor the aging and wear of the knees, ankles and other foot bones of the elderly for a long time, instantly understand the gait situation, adjust and correct at any time, and can be used for correction and cushioning insoles. For reference, and with 3D measurement, it provides dynamic corrective insoles, develops computer simulation programs, and achieves the functions and effects of foot protection. For those with foot disability, such as those with artificial joints and prostheses, they also have gait analysis and auxiliary rehabilitation. They can provide doctor information quickly and effectively, and instantly understand the patient's condition and correction.

Please refer to the tenth figure, which is a flow chart of the method for protecting the foot of the present invention. When the user 901 can place the removable foot protecting device 902 in the shoe, it becomes a part of the original insole, and runs and walks 903. As the measuring body for the measurement of the plantar pressure and the shear force, the sensing area of the measuring body is divided into several blocks according to the structure of the bone of the foot and the ratio of the compressible pressure to the shearing force, and is installed. Array sensors, each independently measuring the pressure of each block The distribution value of the shear force is automatically calculated by the formula according to the force condition of each block, and the data of the user's two feet are respectively taken to establish the average value of the pressure and shear force of the user's foot. And inputting the user's weight value 905, using the program operation 906, establishing a distribution area of the pressure and shear force of each block as a standard range 907 for measuring pressure and shear force, and according to the user's running and walking, the foot pressure With the average and standard range of shear force, the detection software automatically compares 908, and sets its personal threshold value according to the individual's daily activity frequency 909, as the basis for setting the dynamic mode change, and its dynamic mode is divided into normal walking 910, fast walking. With the running 911 and the walking mode 912, the normal mode 913, the sports mode 914, and the walking mode 915 are respectively measured, and the first color-green 916 is the normal 917 of the foot, and the second color of the abnormal part of the foot is displayed. 918 is a pressure 919 and presents a third color - yellow 920 is a large shear force 921. If the pressure and shear force are not normal at the same time, the fourth color - orange 922 signal, indicating that the pressure and shear force is 923, For the user to judge the normal and abnormal condition of the sole, to instantly understand the gait situation, adjust and correct or treat 924 at any time, and provide reference for the correction and cushioning insole to achieve the function and effect of the foot protection. For the disabled people, the method is the same. It can not only provide gait analysis and auxiliary rehabilitation, but also provide doctor information quickly and effectively. It can instantly understand the patient's condition and correction, and can monitor and track the average person and foot for a long time. The problem and treatment of the gait of the disabled. For example, usually during walking or running, the gait of the foot valgus and varus occurs under normal conditions. During the whole gait cycle, valgus and varus are alternately appearing, so for the average person As long as the movement is bound to happen The phenomenon of valgus, the so-called valgus refers to the deviation of the talar joint to the inner side, the whole movement is produced by the joints of the talus, the transverse stern, the stern, the wedge, the wedge, the scorpion, the wedge, the sac, etc. A kind of normal phenomenon that occurs when the foot is in motion. These joint movements can adapt to the high and low changes of the ground and absorb the reaction force of the contact surface, which is helpful to relieve the impact force of the foot. The talus joint of the foot itself has the function of producing eversion. As shown in the tenth figure-(a), this degree of valgus is normal, but if the foot joint is excessively everted, its posterior valgus More than 5 degrees, the anterior valgus is greater than 15 degrees, as shown in the tenth figure - (b), and the joints of the foot are excessively varus, the varus of the foot is greater than 5 degrees, and the anterior varus is greater than 35 degrees, such as As shown in Figure 10-(c), it is very easy to cause joint injuries and even fractures. Therefore, by the method of the invention, the pressure and the shear force can be quickly and accurately measured, and the occurrence condition thereof can be judged, and the gait situation can be instantly understood, and the adjustment and correction can be made at any time to achieve the function and effect of the foot protection. There are quite a few types of occurrences, and it is impossible to enumerate them one by one. Therefore, only the following methods for measuring the left foot and the two feet and the method of judging are listed for reference.

[Measurement method]

The scope of the foot protecting device and the method thereof are applicable to the general person, the handicapped person and the special condition, and the examples of the measuring method are as follows:

General

(1) The inner side of the heel 501 is red, indicating a slight eversion, which may cause injury to the inside of the ankle joint, as shown in Figure 11-(a).

(2) The inner side of the heel 501 is orange, and the inner side of the sole 503 is red, indicating excessive valgus, which may cause injury to the medial aspect of the ankle joint and the possibility of fracture, as shown in Fig. 11-(b).

(3) When the inner side of the heel 501 and the inner side of the sole 503 are orange at the same time, it indicates severe valgus, which may cause fatigue fracture of the ankle joint, as shown in Fig. 11-(c).

(4) The outer side of the heel 502 is partially red, indicating a slight inversion, which may cause injury to the lateral side of the ankle joint, as shown in Figure 12-(a).

(5) When the outer side of the heel 502 is orange, and the outer side of the sole 505 is red, indicating excessive varus, the lateral joint of the ankle may be injured and fracture may occur, as shown in Fig. 12-(b).

(6) When the outer side of the heel 502 and the outer side of the sole 505 are orange, it indicates severe varus, which may cause fatigue fracture of the ankle joint, as shown in Fig. 12-(c).

(7) When the inner side of the heel 501 and the outer side of the heel 502 are red at the same time, it means that the pace is slightly heavy. It is necessary to slow down the pace to adjust the breathing or tiredness to rest, to avoid injury to the ankle or knee joint, as shown in Figure 13-(a) Show.

(8) The inner side of the heel 501 is orange and the outer side of the heel 502 is red, indicating that the pace is too heavy and there is a phenomenon of partial valgus, which may cause the inside of the ankle joint to twist. Injury, as shown in Figure 13-(b).

(9) The inner side of the heel 501 is red and the outer side of the heel 502 is orange, indicating that the step is too heavy and has a partial varus, which may cause a sprain of the ankle joint, as shown in Fig. 13-(c).

(10) The inner side of the sole 503 and the center of the sole 504 are red at the same time, indicating that the pace is heavy or the force is large, which may cause ankle injury, as shown in Fig. 14-(a).

(11) The inner side of the sole 503 is orange and the center of the sole 504 is red, indicating that the pace is too heavy or too fast, which may cause ankle joint injury or fatigue fracture of the ankle joint. Figure 14 - ( b) shown.

(12) When the inner side of the heel 501 and the inner side of the sole 503 and the center of the sole 504 are red, that is, the inner side of the sole is heavily stressed, there is a phenomenon that the outer eight, the force is not smooth, and the outward opening of the foot is too large. In order to avoid wasting physical strength and causing injuries to the ankles due to improper exertion, as shown in Figure 15-(a).

(13) When the inner side of the heel 501 and the inner side of the sole of the foot 503 are orange and the center of the sole 504 is red, there is a serious external eight and difficulty in exerting the force. Adjustments are needed to avoid injury of the ankle and possible fracture. , fifteenth figure - (b).

(14) When the outer side of the heel 502, the outer side of the sole 505, and the center of the sole 504 are red, that is, the inner side of the sole is heavily stressed, there is a phenomenon that the inner eight, the force is not smooth, and the inward opening of the foot is too large. In order to avoid wasting physical strength and not applying force This caused an injury to the ankle, as shown in Figure 16-(a).

(15) When the outer side of the heel 502 and the outer side of the sole of the foot 505 are orange and the center of the sole 504 is red, there is a serious internal eight and difficulty in applying force. Adjustments are needed to avoid injury of the ankle and possible fracture. , Figure 16 - (b).

(16) When the red warning is applied to the inner side of the sole 503, the center of the sole 504 and the outer side of the sole 505, the force is too high, and the ankle and ankle joint are easily injured, as shown in Fig. 17-(a).

(17) Red warning on the inner side of the heel 501, the outer side of the heel 502, the inner side of the sole 503 and the center of the sole 504, indicating that the footstep is too heavy to rest, or the sole is too hard or plasticized to be updated to avoid the ankle and knee. Joint injury, shown in Figure 17-(b).

(18) The right foot is green, but the inner side of the left foot is 501 red, indicating that the left foot is slightly heavier and slightly eversion, which may cause injury to the inside of the ankle joint. The left and right foot gaits need to be adjusted. Figure 18-(a ); the left foot is green, and vice versa.

(19) The right foot is green, but the inner side of the left foot is 501 orange, and the inner side of the left foot 503 is red, indicating that the left foot is too heavy, excessively everted, and severely one foot is stressed, there is a slight outer eight Phenomenon, may cause injury to the medial aspect of the ankle joint and the possibility of fracture, requiring long-term gait adjustment or treatment, the first Figure 18-(b); the left foot is green, and vice versa.

(20) The right foot is green, but the left foot heel inner 501 and the heel outer side 502 are both red at the same time, which means that the left and right foot steps are different, the left foot heel is too heavy, and the gait adjustment is needed to avoid the left ankle or Knee joint injury, shown in Figure 19-(a); the left foot is green, and vice versa.

(21) The right foot is green, but the inner side of the left foot 503 and the center 504 of the sole of the foot are red at the same time, that is, the left foot is heavy and the force is large, and adjustment is needed to avoid an ankle injury and an ankle injury. Nineteen-(b); the left foot is green, and vice versa.

(22) Both feet are on the inner side of the sole 503 and the center of the sole 504 is red at the same time, indicating that the two feet are first grounded and everted, which may cause ankle injury and need to be corrected. Figure 20-(a) shows .

(23) When both feet show the inner side of the sole 503, the center of the sole 504 and the outer side of the sole 505, a red warning is displayed, indicating that the two feet are fully grounded with the sole of the foot, and the ankle joint and the ankle joint are extremely vulnerable, requiring correction and treatment. Twenty-fifth-(b).

(24) When walking or running, the measured frequency, if less than the average threshold value, indicates that the user is fatigued and needs to rest.

(25) Children's walking and running are the same as those of adults.

2. Disabled

(1) If the right foot is equipped with a prosthetic, the prosthetic limb will appear green when walking, but the inner side of the left heel will be red, indicating that the left foot is slightly heavier and slightly eversion, which may cause injury to the left ankle joint. Figure 18-(a); if the left foot is fitted with a prosthetic, the opposite is true.

(2) The right foot is equipped with prosthetic, the prosthetic limb is green when walking, but the inner side of the left foot heel 501 is orange, and the inner side of the left foot sole 503 is red, indicating that the left foot is too heavy, excessively everted, and serious One foot is stressed, there is a slight external phenomenon, which may cause injury to the medial aspect of the ankle joint and the possibility of fracture. It takes a long time to make gait adjustment or treatment, as shown in Figure 18-(b); left foot installation Prosthetics, the opposite.

(3) If the right foot is equipped with a prosthetic, the prosthetic leg will be green when walking, and the left foot heel inner side 501 and the heel outer side 502 will be red at the same time, that is, the left and right foot steps are different, and the left foot heel is too heavy. State adjustment to avoid injury to the left ankle or knee joint, as shown in Figure 19-(a); if the left foot is fitted with a prosthetic, the opposite is true.

(4) If the right foot is equipped with a prosthetic, the prosthetic limb will appear green when walking, and the left foot sole 503 and the sole center 504 will be red at the same time, which means that the left foot is heavy and the force is large, and adjustment is needed to avoid single foot injury. The ankle injury is caused, as shown in Figure 19-(b); if the left foot is equipped with a prosthetic, the opposite is true.

(5) The artificial joint is installed on the right foot, and the set foot is green when walking, but its left The inner side of the heel 501 is red, indicating that the left foot is slightly heavier and slightly eversion, which may cause injury to the left ankle joint. The pace needs to be adjusted, as shown in Figure 18-(a); if the left foot is equipped with artificial joints, then on the contrary.

(6) If the artificial foot is installed on the right foot, the foot is green when walking, but the inner side of the left foot is 501 orange, and the inner side of the left foot 503 is red, indicating that the left foot is too heavy and excessively everted. And severe single-legged force, there is a slight external phenomenon, may cause injury to the medial aspect of the ankle joint and the possibility of fracture, long-term gait adjustment or treatment, shown in Figure 18-(b); left If the foot is equipped with an artificial joint, the opposite is true.

(7) If the artificial foot is installed on the right foot, the green foot is displayed when the foot is walking, and the inner side of the left heel 501 and the outer side 502 of the heel are both red at the same time, that is, the left and right feet are not in a different pace, and the left foot and the heel are too heavy. Gait adjustment is required to avoid injury to the left ankle or knee joint, as shown in Figure 19-(a); if the left foot is fitted with an artificial joint, the opposite is true.

(8) If the artificial foot is installed on the right foot, the foot is green when the foot is installed, and the inner side 503 of the left foot and the center 504 of the sole of the foot are red at the same time, that is, the left foot is heavy and the force is large, and adjustment is needed to avoid Ankle injury is caused by a single foot injury, as shown in Figure 19-(b); if the left foot is fitted with an artificial joint, the opposite is true.

3. Special conditions

(1) Using one step and one signal as the pedometer, and measuring the frequency of each step, such as running, changing from running mode to walking mode means fatigue and rest.

(2) Foot towing:

A. When a single yellow color appears on the inner side of the heel 501, it indicates that the foot has a towed condition, which is easy to wear on the inside of the heel of the shoe, as shown in Fig. 21-(a).

B. When a single orange color appears on the inner side of the heel 501, it indicates that the towing is severe and the inside of the heel of the shoe is severely worn, as shown in Fig. 21-(b).

C. When a single yellow color appears on the outer side of the heel 502, it indicates that the foot has a towed condition, which is easy to wear on the outside of the heel of the shoe, as shown in Fig. 22-(a).

D. When a single orange color appears on the outer side of the heel 502, it indicates that the towing is severe and the outer side of the heel of the shoe is severely worn, as shown in Fig. 22-(b).

(3) When climbing stairs or climbing mountains:

A. When one of the sole 503, the center of the sole 504 and the outside of the sole 505 appear red, it means that the stairs or the climbing speed is slightly faster. The footsteps need to be adjusted to avoid the breathing is not smooth, the fatigue is easy, and the ankle joint is easily injured. Three figures - (a).

B. One of the sole 503, the center of the sole 504 and the outer 505 of the sole of the foot appears red, and when the other appears orange, it means climbing the stairs or climbing the mountain. Too fast, it is easy to cause injury to the humerus and ankle, as shown in Figure 23-(b).

(4) When going down stairs or downhill:

A. When the heel inner side 501, the heel outer side 502, the sole inner side 503, the sole center 504 and the outer side of the sole 505 appear red, it means that the speed of going down the stairs or downhill is slightly faster, and the steps need to be adjusted to avoid ankle injury. Figure 24 - (a).

B. The inner side of the heel 501, the outer side of the heel 502, the inner side of the sole 503, the center of the sole 504, and the outer side of the sole 505 are red. When the other two appear orange, the speed of going down the stairs or downhill is too fast, and the steps need to be adjusted. Avoid falls and the ankle and knee are vulnerable to injury, as shown in Figure 24-(b).

(5) When wearing high heels:

A. Two of the soles of the feet 503, the center of the soles of the feet 504 and the outside of the soles of the feet 505 appear red, indicating that the speed is slightly faster, and the steps need to be adjusted to avoid injury to the tibia and ankle joints, as shown in Fig. 25-(a).

B. The inner side of the sole 503, the center of the sole 504 and the outer side of the sole 505 appear red and the other two appear orange, indicating that the speed is too fast, and the footsteps need to be adjusted to avoid injury to the cheekbones, ankles and knees. b) shown.

[Examples]

The foot protection device and the method thereof are described by the above-mentioned measurement and determination methods, and the embodiments thereof are as follows:

1. General:

(1) For children aged 3-6 years, gait measurement is performed. If the foot is slightly eversion, it is shown in Figure 11-(a); if the foot is slightly inverted, it appears as Figure 12 - (a); if the pace is heavy or the force is large, it is as shown in Figure 14 - (a); if the foot is slightly outside the eight hour, it is as shown in the fifteenth figure - (a); if the foot is slightly within 8 o'clock, it is as shown in Figure 16-(a); if the foot is fully grounded with the sole of the foot, it appears as shown in Figure 20-(b) As shown in the figure 20-(b), if the foot has a towed situation.

(2) When a teenager, an adult or an elderly person walks and runs, the gait measurement is performed, and the posture of the foot is incorrect and the force is as shown in Fig. 11 - (a) to the 24th - (b) Show.

2. Disabled

(1) If the prosthetic is installed on the right foot, the gait measurement is performed. If the left foot is slightly heavier and slightly eversion, it is as shown in Figure 18-(a); if the left foot is too heavy and excessive Eversion, and severe single-legged force, with a slight outer eight, as shown in Figure 18-(b); if the left and right foot steps are different, the left foot heel is too heavy, it is like Figure 19 - (a); if the left foot is heavy and the force is large, it is as shown in Figure 19 - (b).

(2) If the artificial joint is installed on the right foot, the gait measurement is performed. If the left foot is slightly heavier and slightly eversion, it is as shown in Figure 18-(a); if the left foot is too heavy, Excessive valgus, and severe single-legged force, with a slight outer eight, as shown in Figure 18-(b); if the left and right foot steps are different, the left foot heel is too heavy, it is like the tenth Figure 9 - (a); if the left foot is heavy and exerts a large force, it appears as shown in Figure 19 - (b).

The above are some of the measurement methods and examples of the present invention, but the measurement methods and examples are merely illustrative and are not intended to limit the scope of the present invention, and the equivalents are The scope of the invention is not limited by the scope of the invention and the scope of the applicant's rights.

101‧‧‧Upper mat

102‧‧‧Soft substrate

103‧‧‧Array pressure and shear sensor

104‧‧‧Microprocessor

105‧‧‧ Analog/Digital Converter

106‧‧‧Wireless or close-in network transmitter

107‧‧‧Power supply

108‧‧‧ Under pad

109‧‧‧Power supply cover

110‧‧‧Soft substrate mounting groove

111‧‧‧The transmitter is equipped with grooves

112‧‧‧Microprocessor mounting groove

113‧‧‧ Analog/Digital Converter Mounting Groove

114‧‧‧Placement groove of the cushion power supply installation box

115‧‧‧Power supply box

116‧‧‧Power supply device with groove placement hole

201‧‧‧Plastic substrate

202‧‧‧Aluminium

203‧‧‧PI polymer insulation

204‧‧‧Organic semiconductor layer

205‧‧‧Source and drain electrode film

206‧‧‧High dielectric inorganic insulating layer such as PI and PAV

207‧‧‧ Conductive rubber

208‧‧‧Electrical metal film

401‧‧‧ phalanges

402‧‧‧跖骨(foot part)

403‧‧‧Wedge bone

404‧‧‧Shoulder bone

405‧‧‧ talus

406‧‧‧胫骨骨

407‧‧‧Hibbon (heel part)

408‧‧‧骰骨骨

409‧‧‧ Fifth phalanx

501‧‧‧ Inside the heel (sensing block)

502‧‧‧ outside of the heel (sensing block)

503‧‧‧The inside of the foot (sensing block)

504‧‧‧foot center (sensing block)

505‧‧‧ outside of the foot (sensing block)

901‧‧‧Users

902‧‧‧Removable foot protection device

903‧‧‧walking or running

904‧‧‧ Measure the average pressure and shear distribution of the two foot soles

905‧‧‧ Enter the weight value

906‧‧‧Programming

907‧‧‧ Establish the standard range of plantar pressure and shear in each block

908‧‧‧Detecting software automatic comparison

909‧‧‧ frequency

910‧‧‧Normal walk

911‧‧‧Run and run

912‧‧‧walking

913‧‧‧Start normal mode

914‧‧‧Starting sport mode

915‧‧‧Start walking mode

916‧‧‧presents the first color

917‧‧‧Normal

918‧‧‧ presents the second color

919‧‧‧Great pressure

920‧‧‧ presents the third color

921‧‧‧Scissible

922‧‧‧ presents the fourth color

923‧‧‧High pressure and shear

924‧‧‧Correction and treatment

The first picture of the component system development map

The second figure (a) the basic process of the organic thin film transistor (b) the single pressure and the shear sensor cross-sectional view, the pressure sensor can be formed by the conductive metal film 208 and the conductive rubber 207 to form a sandwich structure of the resistive load or Electrical rubber is formed by a capacitive load.

Figure 3 Force diagram of the joint of the foot (Fp: pressure; Fs: shear)

Figure 4 Foot skeleton structure

Figure 5 Distribution of the five blocks at the foot

Figure 6 Force diagram of the heel and sole, Pb/(b+f)=F1, Pf/(b+f)=F2, the ratio of the heel to the foot is F1:F2=3.5:1

Figure 7: 4 pressure sensors form a schematic diagram of a cell

Figure 8 Array pressure and shear sensor

The ninth diagram of the foot protection method

Figure 10 Foot flipping various types (a) normal valgus of the foot (b) excessive valgus of the foot (c) excessive varus of the foot

Figure 11 Measurement Example A

Twelfth Figure Measurement Example B

Thirteenth Diagram Measurement Example C

Figure 14 Measurement Example D

Figure 15 Measurement Example E

Figure 16 Measurement Example F

Figure 17 Measurement Example G

Figure 18 Measurement Example H

Figure 19 Measurement Example I

Figure 20 Measurement Example J

Figure 21 Measurement Example K

Twenty-second diagram Measurement Example L

Twenty-third map measurement example M

Twenty-fourth measurement measurement example N

Twenty-fifth Figure Measurement Example O

501‧‧‧ Inside the heel (sensing block)

502‧‧‧ outside of the heel (sensing block)

503‧‧‧The inside of the foot (sensing block)

504‧‧‧foot center (sensing block)

505‧‧‧ outside of the foot (sensing block)

Claims (9)

A foot protection system comprising: at least one array of pressure and shear sensors, which are divided into a plurality of blocks according to the structure of the bone of the foot and the ratio of the pressure to the shear force, and each of the zones is independently measured. The pressure and shear distribution of the block; the decoder, multiplexer, and signal amplifying circuit are used to electrically connect and scan the array of pressure and shear sensors to make the array of pressure and shear sensors The signal of each sensing unit can be sent to the signal amplifying circuit of the electrical connection in time, and the signal of the array pressure and shear sensor is amplified by the signal amplifying circuit; the analog/digital signal converter is Converting the analog signal processed by the signal amplifying circuit into a digital signal; the microprocessor controls the circuit and reads the digital signal for further processing, storage, and transmission through a wireless or mesa network transmitter and Transmission; wireless or mesa network transmitter, which transmits the processing result signal of the microprocessor to the remote computer or mobile phone; the power supply provides the power required for the entire system; the flexible circuit board is used for carrying and connecting The array of pressure and shear sensors, decoders, multiplexers, signal amplifying circuits, analog/digital converters, microprocessors, wireless or mesa network transmitters, power supplies, etc.; At least one upper and lower pad for receiving most of the pressure and shear of the sole and covering the Array pressure and shear sensors, decoders, multiplexers, signal amplifiers, analog/digital converters, microprocessors, wireless or mesa network transmitters, power supplies, etc.; computers or mobile phones and The plantar pressure and shear force detection software, etc., are wirelessly transmitted or close to the network, receive the measurement signal, establish the average value of the pressure and shear force of the user's sole, and according to the user's running and walking, The average value of the foot pressure and the shear force is compared with the reference range for the user to judge the normal and abnormal condition of the sole, to instantly understand the gait situation, and to provide a warning or suggestion in time to achieve the function and effect of the foot protection. The system of claim 1, wherein the sensing unit of the array pressure and shear sensor can be formed by a resistive load of a sandwich structure of a conductive metal film and a conductive rubber or a capacitor formed by a dielectric rubber. Sexual load to achieve. The system of claim 2, wherein the sensing unit comprises at least four to form a sensing unit, and the pressure and the shearing force can be simultaneously measured. The four sensing units are 2 x 2 The layout, when the upper and lower electrodes are relatively close by pressure or relatively translated by shear force, can independently measure pressure and shear force. The system of claim 1, wherein the array pressure and shear sensing device, the measurement block is allocated, and the measurement position is different depending on the need. A system for protecting a foot, the main feature of which is that a user puts a soft device capable of sensing the pressure of the sole and the shearing force into the shoe, becomes a part of the original insole, runs and walks, and acts as a foot pressure and scissors. Force-measured measurement body, except for at least one burst of the measurement body In addition to the column pressure and shear sensors, it also includes the required decoder and multiplexer, signal amplifier circuit, analog/digital converter, microprocessor, wireless or mesa network transmitter, power supply , computer or mobile phone and plantar pressure and shear testing software, and the step of the foot pressure and shear testing software for performing the foot protection is: the sensing area of the measuring body depends on the structure of the bone and the pressure and The ratio of shear force is divided into several blocks, and array pressure and shear sensors are installed in the block, and the pressure and shear force distribution values of each block are independently measured, and according to each block The force condition is obtained by taking the data of the user's two feet, and establishing the average value of the pressure and shear force of the user's foot; inputting the user's weight value and detecting it under normal conditions from the database. The range of variation of the ratio of pressure and shear force to the user's weight in each block during walking and running, as the reference range for measuring the measured pressure and shear force; measuring the average value of the foot pressure and shear force, Calculate the number of steps and frequency, Determine whether the user is running or walking, and compare with the corresponding reference range; according to the step result, frequency, running or walking, set the threshold value, automatically determine and start different dynamic modes, and judge, respectively, the foot The block provides the user with a foot pressure and an abnormality of the shear force for the user to instantly understand and correct, and achieve the function of the foot protection. The system of claim 5, wherein the database is built into the foot protection system based on the results of statistical analysis by a normal person. The system of claim 5, wherein the database is built into the foot protection system based on statistical analysis of past usage records of the user. The system of claim 5, wherein the set threshold value is further adjusted according to a personal activity history record. The system of claim 5, wherein the sole pressure and the shear abnormality warning at least include: normal, only the pressure is not normal, only the shear force is abnormal, and the pressure and the shear force are abnormal at the same time. By.