CN-120240760-B - Temperature control intelligent insole and control method thereof

CN120240760BCN 120240760 BCN120240760 BCN 120240760BCN-120240760-B

Abstract

The invention provides a temperature control intelligent insole and a control method thereof, the insole comprises a structural supporting layer, a heat dissipation layer, a temperature adjusting layer, a soaking layer buffer layer, a temperature sensor, a main control board and a power supply unit, wherein the temperature adjusting layer, the soaking layer buffer layer, the temperature sensor, the main control board and the power supply unit are alternately arranged by the semiconductor refrigerator and the heat preservation patch. The main control board monitors data in real time through the temperature sensor, and dynamically adjusts the working state of the semiconductor refrigerator by combining a PID algorithm and a temperature change rate control algorithm, so that accurate temperature control is realized. Based on the multi-modal neural network, predicting the temperature and the change rate of the foot of the user, combining with biomechanical models such as the deformation of the fat pad, the viscoelasticity of the achilles tendon, the fatigue accumulation of the soft tissue and the like under the thermal stress, establishing a constraint condition optimization temperature control curve, and maximizing the comfort and the soft tissue performance. The invention solves the problems of uneven heat dissipation, complex structure and response lag of the traditional temperature control shoes through the cooperation and intelligent control of the multi-layer materials.

Inventors

REN WEIYAN
WANG YAN
PU FANG
YAO JIE
ZHENG LISHA
FAN YUBO

Assignees

北京航空航天大学

Dates

Publication Date: 20260512
Application Date: 20250403

Claims (8)

1. The utility model provides a control by temperature change intelligence shoe-pad which characterized in that includes: the structural support layer is cut according to a preset shape to fit the shape of the foot of a user; The heat dissipation layer is arranged on the structural support layer and is formed by combining a phase change material and a copper sheet, wherein the phase change material is an organic phase change material or an inorganic phase change material, and the phase change material is in the form of phase change microcapsule dry powder or phase change material microsphere powder; The temperature adjusting layer is arranged on the heat dissipation layer and comprises a plurality of heat preservation patches and a plurality of semiconductor refrigerators which are alternately arranged; The soaking layer is arranged on the temperature regulating layer and is made of graphene materials; The buffer layer is arranged on the soaking layer; at least one temperature sensor disposed within the buffer layer; the main control board is arranged in the structural supporting layer and is connected with the semiconductor refrigerator and the temperature sensor, and the main control board adopts a flexible circuit board structure; the power supply unit is arranged in the structural support layer and is used for supplying power to the main control board and the plurality of semiconductor refrigerators; the main control board is used for executing the following operations: Receiving an external instruction to set the rated temperature of the insole; receiving the real-time temperature of the insole fed back by each temperature sensor according to the fixed sampling rate; Based on the real-time temperature and the rated temperature of the insole, a control signal for each semiconductor refrigerator is generated through a proportional-integral-derivative algorithm and a temperature change rate control algorithm, and is sent to the corresponding semiconductor refrigerator through a communication interface to control the temperature; the main control board is also used for executing the following operations: Based on a preset temperature adjustment strategy, predicting the temperature and the temperature change rate of the foot of a user through a pre-trained multi-modal neural network under the condition of specifying physiological characteristics and using scene characteristics of the user; calculating biomechanical performance indexes based on the soft tissue performance physical model, wherein the biomechanical performance indexes comprise the deformation degree of a foot fat pad of a user, the achilles tendon viscoelasticity and the soft tissue fatigue degree; establishing constraint conditions according to the biomechanical performance indexes and the comfort level boundary, maximizing the soft tissue performance index and the comfort level index under the constraint conditions, and outputting an optimal temperature control curve; And replacing the rated temperature of the insole with the optimal temperature control curve, and generating control signals for each semiconductor refrigerator according to the real-time temperature of the insole and the optimal temperature control curve and based on the temperature change rate control algorithm of the example integral derivative algorithm.
2. The temperature control intelligent insole according to claim 1, wherein the main control board is provided with a wireless communication module for receiving temperature control instructions and feeding back running state information, and the wireless communication module adopts a Bluetooth module, a ZigBee module, a Wifi module and/or a mobile network data communication module.
3. The temperature-control intelligent insole according to claim 1, wherein the organic phase-change material comprises long-chain alkane, fatty acid and lipid thereof, and the inorganic phase-change material comprises inorganic hydrated salt compound; The long-chain alkane comprises hexadecane or octadecane, the fatty acid and the esters thereof comprise stearic acid or butyl stearate, and the inorganic hydrated salt compound comprises sodium sulfate or calcium chloride hydrate.
4. The temperature-control intelligent insole according to claim 1, wherein the heat-insulating patch is made of polyurethane foam or polystyrene foam; The structural support layer and the buffer layer are made of rubber or polymer buffer materials, the rubber buffer materials comprise styrene-butadiene rubber or butadiene rubber, and the polymer buffer materials comprise polyurethane, polyethylene, polypropylene or polystyrene.
5. The intelligent temperature control insole according to claim 1, wherein the temperature sensors are arranged in the buffer layer in a patch type and equally spaced at set intervals; The power supply unit adopts a battery power supply or self-power supply mechanism, the self-power supply mechanism consists of two piezoelectric ceramics and an intermediate layer, the intermediate layer adopts a metal sheet or conductive composite material, and the piezoelectric ceramics are regularly arranged and bonded together according to the polarity to form a double-wafer structure.
6. A control method for a temperature-controlled intelligent insole according to any one of claims 1 to 5, wherein said method is performed based on a main control board, said method comprising the steps of: Receiving an external instruction to set the rated temperature of the insole; receiving the real-time temperature of the insole fed back by each temperature sensor according to the fixed sampling rate; based on the real-time temperature and the rated temperature of the insole, a control signal for each semiconductor refrigerator is generated through a proportional-integral-derivative algorithm and a temperature change rate control algorithm, and is sent to the corresponding semiconductor refrigerator through a communication interface to control the temperature; the method further comprises the steps of: Based on a preset temperature adjustment strategy, predicting the temperature and the temperature change rate of the foot of a user through a pre-trained multi-modal neural network under the condition of specifying physiological characteristics and use scene characteristics of the user; calculating biomechanical performance indexes based on the soft tissue performance physical model, wherein the biomechanical performance indexes comprise the deformation degree of a foot fat pad of a user, the achilles tendon viscoelasticity and the soft tissue fatigue degree; establishing constraint conditions according to the biomechanical performance indexes and the comfort level boundary, maximizing the soft tissue performance index and the comfort level index under the constraint conditions, and outputting an optimal temperature control curve; And replacing the rated temperature of the insole with the optimal temperature control curve, and generating control signals for each semiconductor refrigerator based on the example integral derivative algorithm and the temperature change rate control algorithm according to the real-time temperature of the insole and the optimal temperature control curve.
7. The control method of the temperature control intelligent insole according to claim 6, wherein the expression of temperature control by the proportional-integral-derivative algorithm is: ; Wherein, the The output signal of the controller, representing the output power of the TEC drive circuit, The temperature error is the difference between the set value and the actual temperature, Is a coefficient of proportionality and is used for the control of the power supply, As an integral coefficient of the power supply, Is a differential coefficient; The expression of the temperature change rate control algorithm for temperature control is as follows: ; indicating the rate of change of the output power of the temperature control element, Representing the scaling factor in the temperature rate control algorithm, Representing the integral coefficient in the temperature rate control algorithm, Indicating the maximum rate of change allowed, Indicating the current rate of temperature change.
8. The method for controlling a temperature-controlled intelligent insole according to claim 6, wherein said multi-modal neural network captures dynamic timing characteristics based on bi-directional LSTM.

Description

Temperature control intelligent insole and control method thereof Technical Field The invention relates to the technical field of intelligent wearing, in particular to a temperature control intelligent insole and a control method thereof. Background Diabetic foot ulcers are one of the serious complications of diabetes, and the patients have reduced perceptibility to temperature and pressure changes due to nerve function injury and blood circulation disorder, and the feet are easily affected by external environments, causing tissue damage and other problems. The proper temperature environment is significant for reducing the risk of diabetic foot ulcer. The intelligent temperature control shoes are provided as innovative auxiliary tools, and the core of the intelligent temperature control shoes is to combine temperature regulation and intelligent temperature management, and the temperature in the shoes is sensed in real time and intelligently regulated by providing high-precision temperature sensors and refrigerating and heating modules in the shoes, so that the feet are ensured to be in a proper range. Meanwhile, the embedded control system can be connected with the mobile equipment or the cloud platform, so that real-time synchronization of foot health data of a patient is realized, and a user and a doctor can respectively check and remotely monitor foot conditions through mobile phone application, thereby providing a personalized nursing scheme for the patient. However, the related art of the temperature controlled shoes currently existing have various disadvantages. On the one hand, lack of efficient heat radiation structure in the design of partial temperature control shoes, lead to the refrigeration piece long-term in-service because of heat accumulation and efficiency reduction, influence the refrigeration module performance, cause in the shoes temperature distribution inequality, increase patient's foot uncomfortable sense and ulcer risk. On the other hand, some temperature control shoes internal structure is complicated, if adopt complicated subassemblies such as sealed fluid passage, heat exchange system, pump structure, not only increased the weight and the complexity of the shoes body, brought extra burden for patient's foot, limited the daily use suitability of product, still lead to manufacturing and maintenance cost too high, influence marketing and accessibility. In addition, the intelligent degree of partial temperature control shoes is lower, only can realize passive temperature regulation, can not carry out dynamic adjustment according to the real-time demand of patient or environmental change, has weakened medical institution and has provided remote guardianship and individualized nursing's ability for the patient through equipment. Disclosure of Invention In view of this, the embodiment of the invention provides a temperature control intelligent insole and a control method thereof, which are used for eliminating or improving one or more defects in the prior art and solving the problems of poor heat dissipation performance, complex structure and weak intelligent degree of the prior temperature control shoes. One aspect of the present invention provides a temperature controlled intelligent insole comprising: the structural support layer is cut according to a preset shape to fit the shape of the foot of a user; the heat dissipation layer comprises a phase change material, and a copper sheet layer is arranged on the phase change material; The temperature adjusting layer is arranged on the heat dissipation layer and comprises a plurality of heat preservation patches and a plurality of semiconductor refrigerators which are alternately arranged; The soaking layer is arranged on the temperature regulating layer and is made of graphene materials; The buffer layer is arranged on the soaking layer; at least one temperature sensor disposed within the buffer layer; the main control board is arranged in the structural supporting layer and is connected with the semiconductor refrigerator and the temperature sensor; and the power supply unit is arranged in the structural support layer and is used for supplying power to the main control board and the plurality of semiconductor refrigerators. In some embodiments, the main control board is provided with a wireless communication module for receiving the temperature control instruction and feeding back the operation state information, and the wireless communication module adopts a Bluetooth module, a ZigBee module, a Wifi module and/or a mobile network data communication module. In some embodiments, the phase change material is an organic phase change material or an inorganic phase change material, wherein the organic phase change material comprises long-chain alkane, fatty acid and lipid thereof; The long-chain alkane comprises hexadecane or octadecane, the fatty acid and the esters thereof comprise stearic acid or butyl stearate, and the inorganic hydrated