CN104207409B - A kind of pressure is perceived certainly, the Intelligent insole of self power generation - Google Patents

Abstract

The invention discloses a pressure self-sensing and self-generating intelligent insole, which consists of upper and lower insole bodies, insole interlayers, electric heaters, piezoelectric stacks, bluetooth modules, function selection switches, processing and control modules, accumulators, mini ‑USB interface and other parts, which can communicate with the application software on the smart phone through Bluetooth; the present invention uses a piezoelectric stack, which can measure the pressure of the foot and calculate the number of steps when walking without external sensors, so as to monitor the user It can also generate electricity and has the function of self-generation; it also has the function of charging mobile phones, which can provide a small amount of electricity for mobile phones to deal with emergencies, especially suitable for use in places where there is no power supply in the wild; it has energy-saving features , Easy to use, easy to install and low cost.

Description

A smart insole with pressure self-sensing and self-generating

technical field

The invention belongs to the technical field of smart wear, and in particular relates to a smart insole with self-sensing pressure and self-generating power.

Background technique

With the advancement of modern technology and the improvement of people's quality of life, people have begun to put forward higher requirements for our daily wear, so smart wear is developing rapidly, and smart insoles are one of them. Yang Shenda et al.’s patent “A Medical Intelligent Test Adjusting Load-bearing Insole (No: 201010216224.8)” discloses a medical intelligent test-adjusting weight-bearing insole, which consists of a pressure acquisition sensor placed inside the insole and external signal processing. The invention can detect the load in real time, and adjust the size of the load according to the measured value, which is convenient for patients to recover after surgery; Zheng Bin et al.’s patent "an intelligent insole and method for measuring walking gait (No: 201310105338.9)" Similar to the patents of Yang Shenda and others, it can measure the user's walking gait at any time through the pressure sensor, so that people can know their own foot conditions in time; Ji Zisheng's patent "electric insole (No: 200620092588.9)", Liu Zuxue's patent "Multifunctional electric heating insole (No: 201220040833.7)", Lu Weiwei's patent "electric heating insole (No: 200620157092.5)" and Zhou Ting's patent "low voltage electric heating insole (No: 201320076984.2)" respectively proposed a kind of can generate The electric heating insole of heat; the insole launched by 3LLab at the 2014 International Consumer Electronics Show (CES) has a three-axis accelerometer and eight pressure sensors, which can monitor the user's activity level, walking health and other issues, and also support wireless charging. Its sales Price around $200. Both the above smart insoles and the existing smart insoles require a large-capacity battery or an external power supply to realize their functions, and various sensors must be integrated inside the insole, which will inevitably lead to doubts about the safety of the insole, and the cost will be relatively high.

Studies have shown that piezoelectric ceramics can generate electricity when they are squeezed, and when they are squeezed periodically, they can generate periodic electrical signals of the same frequency, and the greater the force during extrusion, the greater the amplitude of the electrical signals The larger it is, the more power it corresponds to. The piezoelectric sensor used in Zhai Zhenming et al.’s patent “A Kind of Insole-type Walking Input Sensing Device” utilizes the piezoelectric effect of piezoelectric ceramics to convert stress (or strain) into voltage or charge, and then amplifies A device for amplification and output. Zhai Zhenming et al. used the characteristics of the correlation between the output voltage or charge of piezoelectric ceramics and the stress they received, but did not mention and utilize the characteristics that the period of the output voltage of piezoelectric ceramics is related to the pace of people walking, that is, they can be measured by measuring The number of cycles of the piezoelectric ceramic output voltage indirectly obtains the number of steps people walk. The present invention improves and invents the existing technology based on this principle, and measures the cycle of the electrical signal generated by the piezoelectric ceramic through the corresponding processing circuit. The electrical energy generated can also be collected to power the processing circuit.

Contents of the invention

Aiming at the problems existing in the existing intelligent insole and the piezoelectric effect of piezoelectric ceramics, the invention discloses an intelligent insole with pressure self-sensing and self-generating.

To achieve the above object, the technical solution adopted in the present invention is:

A smart insole with self-sensing pressure and self-generating power, including: upper and lower insole bodies, insole interlayer, electric heater, piezoelectric stack, Bluetooth module, function selection switch, processing and control module, battery, mini-USB interface, Smartphone application software.

The upper and lower insole bodies are the upper surface and the lower surface of the smart insole, which are used to protect the circuits and components in the insole; wherein the upper surface is in contact with people's feet, and the lower surface is in contact with the sole; the edges of the two insole bodies are respectively Two zipper chain straps that can be paired can connect the upper and lower insole bodies together through zippers, and form a closed space for placing other parts of the smart insole.

The insole interlayer is an interlayer between the upper insole body and the lower insole body, slightly smaller than the upper and lower insole bodies, and placed in the closed space formed by the upper and lower insole bodies; its corresponding position has been hollowed out for fixing the smart phone. Circuits and components inside the insole.

The electric heater is a shoe-shaped low-voltage electric heater, slightly smaller than the insole interlayer, placed between the upper insole body and the insole interlayer, connected with the processing and control module, and used for heating and keeping warm inside the shoe.

The piezoelectric stack is the core component of the smart insole, consisting of several piezoelectric ceramic sheets connected in parallel, fixed on the sole or heel of the insole, and used to detect foot pressure, count steps and provide electrical energy to the smart insole ; Its output is divided into two ways, one way is used to charge the battery, and the other way is processed and then enters the analog-to-digital conversion pin of the microprocessor, which is used to calculate the foot pressure and the number of walking steps.

The bluetooth module is an integrated small bluetooth slave module, which is connected to the controller through a serial communication interface, and used together with the bluetooth application software running on the smart phone to realize the communication between the smart insole and the smart phone.

The function selection switch is a six-contact single-way rotary switch, which is used to control various functions of the smart insole, such as turning on the power, turning on or off the heating function, turning on or off the Bluetooth function, and the like.

The processing and control module includes: a shaping and voltage conversion circuit, a storage battery charging and discharging module, a voltage stabilizing module, a microcontroller and its peripheral circuits. The shaping and voltage conversion function is to convert the alternating current output by the piezoelectric stack into positive 5V direct current, and its direct current output terminal is connected with the power supply input terminal of the battery charging and discharging module, so that electric energy can be input to the battery charging and discharging module; The function of the battery charging and discharging module is to collect the electric energy output by the piezoelectric stack to charge the battery, and at the same time release the electric energy stored in the battery to protect the battery. For example, the constant current can be selected according to the characteristics of the battery when charging. Or constant voltage charging, when discharging, it can output a stable voltage, with overcharge or overdischarge protection; the function of the voltage stabilization module is to stabilize the output voltage of the battery charge and discharge module within the supply voltage range of the microcontroller; the micro The controller and its peripheral circuits are the minimum system circuit of the single chip microcomputer and the interface circuit with other modules.

The accumulator is a small-capacity polymer lithium battery, and its function is to collect the electric energy produced by the piezoelectric stack and supply power to other power consumption parts; because the piezoelectric stack used in the present invention can generate electric energy when people walk, it can be used at any time. accumulator charging, so the present invention can use the less accumulator of capacity, can not only reduce cost like this, can also reduce the volume and the quality of insole, also can improve system security simultaneously (large capacity battery is more harmful when leaking or explosion takes place ).

The mini-USB interface is divided into an input interface and an output interface, which are respectively connected to the power input terminal and the power output terminal of the battery charging and discharging module; the mini-USB input interface can be connected to a charger to charge the battery from the outside, and the mini-USB output The interface can be used to charge the mobile phone in case of emergency.

The smart phone application software is an application program installed on a smart phone, and the smart phone must have a bluetooth function to use this software; after the mobile phone and the smart insole have both turned on the bluetooth function, run this application software, after completing the bluetooth pairing, you can pass The software monitors the smart insole.

The realization method of above-mentioned intelligent insole, comprises the following steps:

1. The corresponding position on the insole interlayer has been hollowed out, and the piezoelectric stack, Bluetooth module, function selection switch, processing and control module, battery, mini-USB interface, etc. are fixed on the corresponding position, and follow the method described above make a connection;

2. Connect the electric heater to the processing and control module on the insole interlayer, and lay it flat on the insole interlayer. Put the electric heater, the insole interlayer and the circuits and components on it between the upper and lower insoles, and pull them up. Up and down the zipper on the insole to form a complete smart insole;

3. Put the smart insole in a suitable shoe. When the user walks, they will step on the insole, and the piezoelectric stack inside the insole will generate a periodic electrical signal that is in step with the person's walking pace, and the force of stepping on the insole The larger the value, the greater the amplitude of the electrical signal, and the more electrical energy will be generated; the processing circuit inside the smart insole can measure the electrical signal to obtain the corresponding cycle number and amplitude, and through the corresponding circuit. The electrical energy is collected; the microprocessor can calculate the number of steps people walk and the pressure of the feet according to the measured electrical signals;

4. The function of the smart insole can be set through the function selection switch. The optional functions include power on, automatic, on/off heating, on/off Bluetooth, on (or off) heating and Bluetooth; when automatic or heating is turned on, The microprocessor will start or turn off the heating function of the heating plate according to the set temperature to realize intelligent temperature control; when the automatic or Bluetooth is turned on, the smart insole can be connected to the smart insole through the application software running on the smart phone, and the smart insole can be controlled. real time monitoring;

5. The number of steps people walk can be displayed in real time through the smart phone application software. After setting the distance traveled by each step, the distance traveled by people can be calculated; the remaining power of the battery and the distance of people's feet when walking can be displayed in real time. Pressure and temperature; the heating function can be turned on or off, and the target temperature for heating can be set (the target temperature should not be lower than the temperature inside the shoe without heating), the microprocessor will monitor the temperature inside the shoe in real time, and control the heating to make the inside of the shoe The temperature is maintained within the target temperature range.

Advantage and positive effect of the present invention:

1. The present invention can measure the pressure of the feet and calculate the number of walking steps without external sensors, so as to monitor the user's activity level, walking health and other issues, reducing the cost of smart insoles;

2. The piezoelectric stack used in the present invention can generate electric energy and has the function of self-power generation. In the case of realizing the same function and using for the same long time, a smaller battery can be used, which is beneficial to reduce the volume and quality of the smart insole, and at the same time can Solve the safety and cost problems caused by large-capacity batteries;

3. The present invention adopts a detachable way to splice the various structures of the insole. After taking out the electric heater, the interlayer of the insole and the circuits and components on it, the upper and lower insoles can be washed with water, making the application more humane.

4. After the smart insole is placed in the shoe, the user can generate electricity when walking normally. It also has the function of charging the mobile phone, which can provide a small amount of power for the mobile phone to deal with emergencies. It is especially suitable for use in places where there is no power supply in the wild.

Description of drawings

Fig. 1 is the structural explosion diagram of intelligent insole of the present invention;

Fig. 2 is the functional block diagram of intelligent insole of the present invention;

3 is a schematic diagram of a piezoelectric stack in which piezoelectric ceramic sheets are connected in parallel;

Figure 4 is the output voltage curve of the sole piezoelectric stack when people are walking;

Fig. 5 is the circuit diagram of amplification and shaping circuit;

Fig. 6 is a circuit diagram of a step-down/boost conversion circuit;

Fig. 7 is the circuit diagram of battery charging and discharging module;

Figure 8 is a circuit diagram of the microcontroller and its peripheral circuits.

In Figure 1: 1-upper insole, 2-heater, 3-sole interlayer, 4-piezoelectric stack, 5-Bluetooth module, 6-function selection switch, 7-processing and control module, 8-small capacity battery , 9-mini USB interface, 10-lower insole body, 11-smart phone.

detailed description

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the implementation of the present invention is not limited thereto.

1. The structural explosion diagram of a pressure self-sensing and self-generating intelligent insole of the present invention is shown in Figure 1, and the functional block diagram is shown in Figure 2. The specific implementation steps are as follows:

(1) Fig. 1 is an exploded view of the structure of a pressure self-sensing and self-generating intelligent insole of the present invention; 1 and 10 in the figure are the upper and lower insole bodies respectively, and their edges are respectively two chain belts of pairable zippers (not shown in the figure), the upper and lower insole bodies can be connected together by a zipper to form a closed space, and the other parts of the smart insole are surrounded inside; 2 in the figure is an insole-shaped electric heater, which is used to heat the inside of the shoe when needed and heat preservation, the heating control signal is given by the microprocessor; 3 in the figure is the insole interlayer, which is used to fix the electrical components and circuit boards inside the smart insole, and the hollowed out part is the location of the electrical components and circuit boards; in the figure 4 is a piezoelectric stack, which is used to detect foot pressure, count steps and provide power to the smart insole; 5 in the figure is a Bluetooth module, which is used to realize the Bluetooth wireless communication between the smart phone and the smart insole; 6 in the figure is The function selection switch is a six-contact single-way rotary switch, which is used to control power on and off and select some functions; 7 in the figure is a processing and control module, and all components are integrated on a flexible circuit board to realize Relevant processing and control functions of smart insoles; 8 in the figure is a small-capacity battery, which is a polymer lithium battery with a capacity of 200mA in this embodiment; 9 in the figure is a miniUSB interface, which is divided into an input interface and an output interface, and the input interface It can be used to charge the storage battery, and the output interface can be used to charge other devices; 11 in the figure is a smart phone, which has a bluetooth function and can run the supporting application software of the present invention.

(2) Fig. 2 is the functional block diagram of a kind of pressure self-sensing of the present invention, self-generating intelligent insole electric part, in the figure smart mobile phone has bluetooth function, can run the application software supporting this invention, and intelligent insole is carried out by bluetooth wireless communication Data exchange; the output signal of the piezoelectric stack in the figure is divided into two channels, one is input to the shaping and voltage conversion circuit, and the other is connected to the peripheral circuit of the microprocessor, and then enters the microprocessor for analog-to-digital conversion; The input of the shaping and voltage conversion circuit in the figure is one of the output signals of the piezoelectric stack, and the output end is connected to the power input end of the battery charging and discharging module, and the power input end of the battery charging and discharging module is also connected to the mini-USB power input interface , the module is internally connected to a small-capacity lithium battery to control its charging and discharging. The power output terminal of the battery charging and discharging module is connected to the voltage stabilizing module, and the voltage stabilizing module converts the output 5V DC to the 3.3V required by the microprocessor. Direct current; multiple output terminals of the function selection switch are connected to the input interface of the microprocessor; one output port of the microprocessor is connected to the control terminal of the electric heater; the bluetooth module and the microprocessor in the figure exchange data through the serial communication interface .

Two, the specific implementation manner corresponding to the corresponding module in Fig. 2 is as follows:

(1) Figure 3 is a schematic diagram of the piezoelectric stack structure. In the figure, the piezoelectric ceramic sheets are connected in parallel, and a and b are their electrical signal output terminals. Multiple piezoelectric ceramic sheets can be connected in parallel to increase their output power.

(2) As shown in Figure 5, it is the amplification and shaping circuit, which corresponds to the shaping part of the shaping and voltage conversion circuit in Figure 2. The output voltage of the electrical stack is too small to drive the subsequent circuit, so this circuit adds an additional voltage amplification link; Y1 in the figure is the piezoelectric stack in Figure 2; the signal AD_in in the figure is connected to the microcontroller module The input terminal of the peripheral processing circuit of the conversion pin is used to test the output voltage of the piezoelectric stack to judge its peak size and number, so as to calculate the pressure of the foot and the number of steps taken; the ceramic capacitor CL2 in the figure , CL3, C3 and diodes D1, D2, D3 realize the amplification and rectification functions, the regulator diode is used to limit the output voltage amplitude and protect the subsequent circuit, the electrolytic capacitor C4 and the ceramic capacitor C5 are used to further filter the DC signal ; The output terminal Power_out is connected to the power input terminal of the voltage conversion circuit part of the shaping and voltage conversion circuit in FIG. 2 .

(3) As shown in Figure 6, it is a buck/boost conversion circuit, which corresponds to the voltage conversion circuit part of the shaping and voltage conversion circuit in Figure 2, and its function is to convert the output voltage after being shaped by the amplification and shaping circuit into + 5V DC voltage; the core of this circuit is the TPS63061 step-down/boost chip produced by TI, which can convert 2.5V to 12V DC voltage into 5V DC voltage to adapt to the piezoelectric stack output under different foot pressures Influenced by large voltage fluctuations; the Power_out input terminal in Figure 6 is connected to the Power_out output terminal of the amplification and shaping circuit in Figure 5; C6~C12 in the figure are ceramic capacitors, R1~R3 are carbon film resistors with 1% precision, L1 It is the inductance, and their sizes have been marked in detail in the figure; the +5V output voltage is connected to the power input terminal of the battery charging and discharging module in Figure 2.

(4) As shown in Figure 7 is the circuit diagram of the battery charging and discharging module, which corresponds to the battery charging and discharging module in Figure 2. Its function is to control the charging and discharging of the lithium battery, and at the same time protect the battery and indicate the power. Its core is "Shenzhen The lithium battery charging management chip HT4901 produced by Huaxinbang Technology Co., Ltd.; as shown in Figure 7, HT4901 is a 16-pin chip, L1~L4 are power indicator pins, KEY is the control terminal, and they are all connected to the The input port corresponding to the microprocessor is used to record the battery power and the operation of the program control module; P1 and P2 in the figure are the mini-USB power input and output ports respectively, P1 can be connected to the charger to charge the battery, and P2 can be connected to Mobile phone, charge the mobile phone; BT1 is a polymer lithium battery with a capacity of 200mAH, and the triode Q2 is used to control its on-off, and the control terminal Battery of Q2 is connected to a pin of the function selection switch; the input +5V signal is The output signal of the buck/boost conversion circuit, VCC is the power output of the module; other circuits are typical application circuits of HT4901, please refer to its technical manual.

(5) Figure 8 shows the microcontroller and its peripheral circuits, which actually include the microprocessor and its peripheral circuits and voltage regulator modules in Figure 2; the U4 chip in the figure, the model is LM1117s-3.3V, and it is connected to the capacitor C25 ~C27 together form a voltage stabilizing module, which functions to convert the power output signal of the battery charging and discharging module into the +3.3V power supply voltage of the microprocessor and its peripheral circuits; U3 is the microcontroller of the present invention, which is "New Hualong The enhanced 51 single-chip microcomputer produced by Electronics Co., Ltd., the model is C8051F350; AD_in in the figure is connected to the output signal AD_in of the piezoelectric stack in Figure 5, and the signal enters the single-chip microcomputer after passing through the resistance-capacitance network composed of R15, R16, C23 and C24 The AIN0.0 and AIN0.1 pins of AIN0.1 are used for analog-to-digital conversion; J2 is the program download and debugging interface of the single-chip microcomputer; L1~L4 and KEY are connected to the same-named pins in Figure 7; SW-6WAY is a function selection switch, Each terminal is connected with a 10KΩ pull-up resistor, among which terminals 2 to 6 are connected to 5 input terminals of the microcontroller for function selection, and terminal 1 is connected to the Battery port in Figure 7 for switching power supply. When connected to 1, the power is turned off, and when connected to other ports, the power is turned on and the corresponding function is selected; Q1 is a triode, the model is SS8050, which is used to control the on and off of the electric heater, and the DG_GND port is connected to the electric heater (in the figure One end of the heater is not shown, the other end of the heater is connected to the power supply VCC, and the control terminal of Q1 is connected to the output pin P0.7 of the microcontroller; in the figure, RX and TX are connected to the corresponding communication ports of the Bluetooth module for realizing communication with the mobile phone wireless communication.

3. Principles of step counting, power generation and pressure self-sensing:

Figure 4 is the output voltage curve of the sole piezoelectric sheet when people are walking. It is to place the piezoelectric ceramic sheet on the sole of the shoe and connect a 50K resistor in parallel at its output end. When the user walks, use an oscilloscope to test the voltage curve at both ends of the resistor and then Taken from the screenshot; it can be seen from the figure that when people walk, the output of the piezoelectric ceramic sheet is a periodic signal, and each cycle represents a process of foot landing and lifting when walking, and the peak point is detected by the microprocessor The number of steps that people walk can be obtained; the experiment shows that the greater the pressure on the shoe when the foot is on the ground, the greater the peak value of the piezoelectric ceramic output voltage, so the foot pressure value can be indirectly calculated by measuring the peak value; It is known from the piezoelectric effect that piezoelectric ceramics can generate electrical energy when they are squeezed, and the output electrical energy can be collected and utilized to realize the power generation function.

Four, the realization method of above-mentioned intelligent insole, also comprise following steps:

1. Put a smart insole of appropriate size into the user's shoe, and turn the knob of the function selection switch to terminal 2. At this time, the smart insole enters the automatic state, and the Bluetooth function is automatically turned on. The microcontroller C8051F350 uses its internal temperature sensor to control the shoe. Monitor the internal temperature, monitor the level of the P0.0~P0.3 pins to obtain the battery power, and use the differential method to measure the voltage difference between the AIN0.0 pin and the AIN0.1 pin to monitor the piezoelectric stack The voltage changes, so as to calculate the number of peak points of the output voltage (the number of peak points is the number of walking steps) and the amplitude (the amplitude is a function of the pressure of the footsteps).

2. After completing step 1, first turn on the Bluetooth function of the smart phone, and then open the mobile phone monitoring software that is matched with this system; the software can automatically complete the pairing with the Bluetooth module on the nearby smart insole, so as to start monitoring the information in the shoe; The software interface can display in real time information such as the temperature inside the shoe, foot pressure, and the remaining power of the battery transmitted from the Bluetooth module on the smart insole. After turning on the step counting function, the user must first set the distance traveled by one step at the corresponding position on the interface, and then the software starts to calculate and display the number of steps and the distance; after turning on the heating function, the user must first set the preheating temperature and target at the corresponding position on the interface Temperature, the preheating temperature is the initial heating temperature, that is, when the temperature in the shoe is lower than this temperature, the electric heating sheet is turned on and starts heating; the target temperature is the target temperature for heating, and the target temperature cannot be lower than the temperature when the shoe is not heated; When the system is in automatic state, the microprocessor judges whether to start the heating function and the target temperature of heating according to the measured temperature and the last set temperature.

3. When functions such as heating or monitoring of footstep data are not needed, the user can turn off the heating or Bluetooth function through the function selection switch to save power.

4. In an emergency, the mobile phone can be charged through the mini-USB output interface to provide a small amount of power for the mobile phone.

Claims (4)

1. a kind of pressure from perceive, the Intelligent insole of self power generation, including：Upper insole body, lower insole body, insole sandwich, electric heating piece, Piezoelectric stack, bluetooth module, functional select switch, treatment and control module, battery, mini-USB interfaces, smart mobile phone are answered Use software；

The upper insole body, lower insole body are respectively the upper and lower surface of Intelligent insole, for protecting the circuit in shoe-pad And component；Wherein upper surface contacts with the pin of people, and lower surface is contacted with soles；Two insole body edges are respectively for two can match somebody with somebody To zip fastener, upper insole body, lower insole body can be linked together by slide fastener, and formed a closing space, be used for Place the insole sandwich of Intelligent insole, electric heating piece, piezoelectric stack, bluetooth module, functional select switch, treatment and control module, Battery and mini-USB interfaces；

The insole sandwich is an interlayer between upper insole body and lower insole body, less than upper insole body, lower insole body, It is positioned in the closing space that insole body, lower insole body are formed；Its relevant position has been emptied, for fixing in Intelligent insole The circuit and component in portion；

The electric heating piece is shoe-shaped low tension backing, less than insole sandwich, is placed between insole body and insole sandwich, with treatment And control module is connected, for being heated and warming to shoes inside；

The piezoelectric stack is the core component of this Intelligent insole, is composed in parallel by several piezoelectric ceramic pieces, is fixed on shoe-pad Interlayer sole or heel position, for detecting foot pressure, calculating step number and providing electric energy to this Intelligent insole；Its output point It is two-way, all the way for charging a battery, another road enters the analog-to-digital conversion pin of microprocessor after treatment, based on Calculate step pressure and walking step number；

The bluetooth module is integrated small Bluetooth slave module, is connected with controller by serial communication interface, with operation Bluetooth application on smart mobile phone is supported the use, and is capable of achieving the communication between Intelligent insole and smart mobile phone；

The functional select switch is a rotary switch for six contact single-passes, the various functions for controlling Intelligent insole, bag Include and switch on power, be switched on or off heating function, be switched on or off Bluetooth function；

The treatment and control module include：Shaping and voltage conversion circuit, accumulator cell charging and discharging module, Voltage stabilizing module and micro-control Device processed and its peripheral circuit, the shaping and voltage conversion effect are that the alternating current that piezoelectric stack is exported is converted into the straight of positive 5V Stream electricity, its DC output end is connected with the power input of accumulator cell charging and discharging module, electric energy can be input into battery and filled Discharge module；The accumulator cell charging and discharging module effect is that the electric energy for collecting piezoelectric stack output is used to charge battery, together When also can by internal storage battery store electric energy discharge, battery is played a protective role, when charging can be according to battery Characteristic select constant current or constant voltage mode to charge, the voltage of exportable stabilization during electric discharge is overcharged or Cross prevention；Voltage stabilizing module is made Be by the output voltage stabilization of accumulator cell charging and discharging module in the power supply voltage range of microcontroller；The microcontroller and Its peripheral circuit is singlechip minimum system circuit and interface circuit, and the microcontroller is using its internal temperature sensor to footwear Interior temperature is monitored, and the level to P0.0~P0.3 pins is monitored to obtain battery electric quantity, is surveyed using the method for difference The voltage difference of AIN0.0 pins and AIN0.1 pins is measured to monitor the voltage change of piezoelectric stack, so as to calculate its output voltage Peak point number and amplitude, peak point number is exactly the step number of walking, and amplitude and step pressure are in functional relation；

The battery is low capacity poly-lithium battery, and its effect is to collect the electric energy of piezoelectric stack generation and to the intelligence Electricity consumption part in energy shoe-pad powers；

The mini-USB interfaces are divided into input interface and output interface, respectively with the electrical energy inputs of accumulator cell charging and discharging module It is connected with electric energy output end, mini-USB input interfaces can connect charger, battery is charged from outside, mini-USB outputs Interface in case of emergency can charge to mobile phone；

The smart mobile phone application software is the application program on smart mobile phone, and smart mobile phone must have Bluetooth function This software could be used, this application software is run after mobile phone and this Intelligent insole open Bluetooth function, complete Bluetooth pairing Afterwards, Intelligent insole can be monitored by the software, the software interface can in real time show the bluetooth module from Intelligent insole Shoe temperature, foot pressure, battery dump energy information that transmission comes up, after opening step function, user must be first at interface Relevant position sets the stroke that oneself step is walked, and then software starts that step number and stroke is calculated and be shown；Open heating function Afterwards, user first must set pre-heating temperature and target temperature in interface relevant position, and pre-heating temperature is initial heating temperature, i.e., When shoe temperature is less than this temperature, electric heating piece conducting, begins to warm up；Target temperature is the target temperature of heating, and target temperature is not Temperature when not heated in footwear can be less than；During system auto state, microprocessor is according to measured temperature and last setting temperature Degree judges whether to begin to warm up function, and calculates the target temperature of heating.

2. a kind of pressure described in claim 1 from perceive, the Intelligent insole of self power generation, it is characterised in that：Slide fastener is by upper shoe-pad Body (1) and lower insole body (10) are joined together to form a closing space, by the insole sandwich of Intelligent insole, electric heating piece, pressure Electricity is stacked, bluetooth module, functional select switch, treatment and control module, battery and mini-USB interfaces are enclosed in inside it； Insole shaped electric heating piece (2), is placed between insole body (1) and insole sandwich (3), and its thermal control signals is given by microprocessor Go out；Insole sandwich (3), electrical equipment and circuit board inside fixed Intelligent insole；Piezoelectric stack (4), is placed in insole sandwich (3) Front portion, detection foot pressure, calculating step number, and for this Intelligent insole provides electric energy；Bluetooth module (5), is placed in insole sandwich (3) Right back；Functional select switch (6), is placed in insole sandwich (3) right back, is a rotary switch for six contact single-passes, control On/off and function are selected；Treatment and control module (7), are placed in insole sandwich (3) rear portion, and all components are integrated in one On the flexible circuit board of block, the relevant treatment and control function of Intelligent insole are realized；Low capacity battery (8), is placed in shoe-pad Interlayer (3) left back；Mini USB interfaces (9), are also placed in insole sandwich (3) left back, but before low capacity battery (8) Face, is divided into input interface and output interface；Smart mobile phone (11), runs the application software supporting with the Intelligent insole, passes through Bluetooth realizes the monitor in real time to Intelligent insole.

3. a kind of pressure described in claim 1 from perceive, the Intelligent insole of self power generation, it is characterised in that：Described treatment and Control module (7) includes：Shaping and voltage conversion circuit, accumulator cell charging and discharging module, Voltage stabilizing module and microcontroller and its outer Enclose circuit；Electric heating piece (2), piezoelectric stack (4) between them and its with Intelligent insole, bluetooth module (5), functional select switch (6), battery (8), mini-USB interfaces (9) annexation it is as follows：The output signal of piezoelectric stack (4) is two-way, all the way It is input in shaping and voltage conversion circuit, another road is connected to microprocessor peripheral circuit, enters back into and carry out in microprocessor Analog-to-digital conversion；Shaping and the input of voltage conversion circuit are the wherein output signal all the way of piezoelectric stack (4), and output end is connected to The power input of accumulator cell charging and discharging module；The power input of accumulator cell charging and discharging module and mini-USB power inputs Interface (9) is also connected, and its inside modules is connected to low capacity battery (8), to control its discharge and recharge；Accumulator cell charging and discharging mould The power output end of block is connected with Voltage stabilizing module, and the 5V direct currents that Voltage stabilizing module outputs it are converted to microprocessor needs 3.3V direct currents；The output end of functional select switch (6) is connected to the input interface of microprocessor；One of microprocessor is defeated Outlet is connected to the control end of electric heating piece (2)；Bluetooth module (5) carries out data exchange with microprocessor by serial ports.

4. a kind of pressure described in claim 1 from perceive, the Intelligent insole of self power generation, it is characterised in that：Including following intelligence The implementation method of energy shoe-pad：

1st, sizeable Intelligent insole is put into user's footwear, the knob of functional select switch No. 2 terminals is pushed into, now intelligence Energy shoe-pad enters auto state, and Bluetooth function is automatically turned on, and microcontroller C8051F350 is using its internal temperature sensor to footwear Interior temperature is monitored, and the level to P0.0~P0.3 pins is monitored to obtain battery electric quantity, is surveyed using the method for difference The voltage difference of AIN0.0 pins and AIN0.1 pins is measured to monitor the voltage change of piezoelectric stack, so as to calculate its output voltage Peak point number and amplitude, the peak point number is exactly the step number of walking, and the amplitude and step pressure are in functional relation；

2nd, after completing 1 step, the Bluetooth function of smart mobile phone is first opened, then opens the monitoring mobile phone software supporting with the system, The software can complete pairing with the bluetooth module in neighbouring Intelligent insole automatically, soft so as to start that information in footwear is monitored Part interface can in real time show shoe temperature, foot pressure, the battery residue that the bluetooth module transmission from Intelligent insole comes up Information about power, after opening step function, user first must set the stroke that oneself step is walked in interface relevant position, then software Start that step number and stroke is calculated and be shown；After opening heating function, user first must set pre-heating temperature in interface relevant position And target temperature, pre-heating temperature is initial heating temperature, i.e., the electric heating piece conducting when shoe temperature is less than this temperature, starts to add Heat；Target temperature is the target temperature of heating, temperature when target temperature cannot be below not heated in footwear；System auto state When, microprocessor judges whether to begin to warm up function according to measured temperature with the design temperature of last time, and calculates the mesh of heating Mark temperature；

3rd, when that need not heat or monitor step data function, user can turn off heating or bluetooth work(by functional select switch Can be saving electricity；

4th, in case of emergency, can be charged the phone by mini-USB output interfaces, for mobile phone provides a small amount of electric energy.