CN110934576A - Intelligent garment based on piezoelectric film sensor technology and monitoring system - Google Patents

Abstract

The invention provides an intelligent garment and a monitoring system based on piezoelectric film sensor technology, the intelligent garment comprises a garment body, and an acquisition module and a controller which are arranged on the garment and used for detecting human body vital sign signals, and the intelligent garment is characterized in that: the acquisition module comprises a piezoelectric film sensor, a noise shielding unit and an elastic lead, and the piezoelectric film sensor is packaged in the noise shielding unit and connected with the elastic lead to form the acquisition module of an integrated structure. The collection module is sewn or pasted to be built in the intelligent clothes and used for collecting vital signs of people. The monitoring system comprises the intelligent clothes, the intelligent equipment end and the background server, wherein the vital sign signals are sent to the intelligent equipment end through Bluetooth communication, and are sent to the background server through a network for recording and storing. The manufacturing process is simple, the wearing is comfortable, the use is convenient, and the detection data of the sensor is accurate and reliable; the monitoring system is convenient to use.

Description

Intelligent garment based on piezoelectric film sensor technology and monitoring system

Technical Field

The invention belongs to the technical field of wearable monitoring products, and particularly relates to an intelligent garment based on a piezoelectric film sensor technology and a monitoring system.

Background

At present, with the development of health detection technology, wearable health monitoring clothes are developed, physiological signs such as electrocardio, heart rate and respiratory data can be monitored in real time, so that human body information can be accurately reflected, health monitoring and scientific training are facilitated, and accidents are prevented.

Chinese patent (publication No. CN 205493821U) discloses a smart phone-based electrocardiographic monitoring device, which comprises wearable clothing, an electrocardiographic monitoring unit and a smart phone terminal. The vital sign signals of a person are collected through five circular electrode plates. The defect of the technology is that five circular electrode plates are needed to be arranged for electrocardio monitoring, and the wearing is troublesome. Is not beneficial to wearing when the user usually moves, and has lower comfort level.

Chinese patent (publication No. CN 204839503U) discloses a wireless electrocardiogram monitoring garment, which utilizes a wireless electrocardiogram detection module sewed on the body of the garment to collect vital sign parameters of a person, including the body temperature, heartbeat sound, motion state, blood pressure and blood oxygen condition, so as to judge the vital signs of the person. The technology has the defects of more sensors, complex manufacturing process and complicated process flow.

Chinese patent (publication No. CN 208114591U) discloses a wearable intelligent sports underwear for real-time monitoring of electrocardio and respiratory signals, which is composed of an underwear body, fabric electrodes, metal snap fasteners and an intelligent module. The vital signs of the user are measured by collecting the skin electricity on the surface of the human body through three fabric electrodes positioned in the middle of or below the left chest, the right chest, the chest and the left chest. The technology has the disadvantages that the wearing is too troublesome and uncomfortable, the skin electricity collected on the surface of a human body needs to be tightly attached to the skin, the skin needs to be wetted, and signals are easily lost.

Therefore, how to design and develop an intelligent garment and a monitoring system based on the piezoelectric film sensor technology has the advantages of simple manufacturing process, comfortable wearing, convenient use and accurate and reliable sensor detection data. This is a technical problem which is urgently to be solved at present.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides the intelligent garment and the monitoring system based on the piezoelectric film sensor technology, and has the advantages of simple manufacturing process, comfortable wearing, convenient use and accurate and reliable sensor detection data; the monitoring system is convenient to use.

In order to achieve the purpose, the invention adopts the technical scheme that: an intelligent garment based on piezoelectric film sensor technology comprises a garment body, and an acquisition module and a controller which are arranged on the garment and used for detecting human body vital sign signals, and is characterized in that the acquisition module comprises a piezoelectric film sensor, a noise shielding unit and an elastic lead, the piezoelectric film sensor is packaged in the noise shielding unit, and the acquisition module and the elastic lead are connected to form an integrated structure; the collection module is sewn or pasted to be arranged on the intelligent clothes in a built-in mode and used for collecting vital signs of people.

The improvement of the technical scheme is as follows: the controller includes power module, AD acquisition module, signal amplification module, signal filtering module, MCU and bluetooth sending module, piezoelectric film sensor's output with AD acquisition module's input links together, AD acquisition module's output is connected the input of signal amplification module, the output connection signal filtering module's of signal amplification module input, MCU with bluetooth sending module regards as the chip welding on the circuit board that contains signal amplification module and signal filtering module, MCU handles the vital sign signal that is used for coming from signal filtering module, bluetooth sending module is used for sending the vital sign signal to smart machine end through the bluetooth communication.

The technical scheme is further improved as follows: the piezoelectric film sensor is positioned at the back shoulder part of the clothing body, and the controller is arranged at the position of the clothing body corresponding to the waist of a human body.

The technical scheme is further improved as follows: the MCU is a microprocessor with a low power consumption mode, and the low power consumption mode can be automatically started when no vital sign is detected.

The technical scheme is further improved as follows: the piezoelectric film sensor is made of PVDF materials; the power module is a rechargeable battery.

The technical scheme is further improved as follows: the garment body is an underwear jacket, a close-fitting coat jacket or a vest.

The invention discloses an intelligent garment monitoring system based on piezoelectric thin film sensor technology, which is characterized by comprising the intelligent garment based on the piezoelectric thin film sensor technology, an intelligent device end and a background server, wherein a Bluetooth sending module sends a vital sign signal to the intelligent device end through Bluetooth communication, the intelligent device end displays the vital sign signal, and sends the vital sign signal to the background server through a network for recording and storing.

The improvement of the technical scheme is as follows: the background server comprises a storage module, a communication module and a processing unit, the background server is in communication connection with the intelligent device end through a network, and the background server is a cloud server.

The technical scheme is further improved as follows: the smart device end includes storage module, communication module, bluetooth sending module, the smart device end is smart mobile phone or panel computer, smart mobile phone or panel computer have the APP.

Compared with the prior art, the method has the following advantages and positive effects:

1. the piezoelectric film sensor adopted by the invention has acoustic impedance close to that of a human body, can well monitor vital sign signals of the human body, has quick response and high precision, is light and thin, is placed in clothes, greatly reduces foreign body sensation, and improves the comfort level of a user;

2. the invention can still accurately measure the vital signs of the user when the user moves, and filter the action signals of the user when detecting the heartbeat signal and the respiration signal, thereby changing dynamic measurement into static measurement and further ensuring that the measurement result is more accurate. The exercise amount can be reasonably controlled by the user during body-building exercise, so that the user is kept in a healthy and appropriate exercise state;

3. the invention can detect the vital signs and send the data to the background server, and the health standard is set on the background server, so that whether the vital sign data of the user is abnormal or not can be automatically judged, and whether the user is in a healthy state or not can be judged by a health team.

Drawings

FIG. 1 is a schematic diagram of the arrangement positions of an acquisition module and a controller on an intelligent garment according to the present invention;

FIG. 2 is a schematic diagram of the structure of the acquisition module on the smart garment of the present invention;

FIG. 3 is a schematic diagram of a controller on the smart garment of the present invention;

FIG. 4 is a schematic diagram of an intelligent garment monitoring system based on piezoelectric film sensor technology in accordance with the present invention;

FIG. 5 is a flow chart of the operation of the smart garment of the present invention;

FIG. 6 is a waveform diagram of a vital signal acquired by a piezoelectric film sensor according to the present invention after amplification;

FIG. 7 is a waveform diagram of a segment of the original signal collected by the piezoelectric film sensor of the present invention;

FIG. 8 is a graph of a heartbeat signal extracted from an original signal according to the present invention;

FIG. 9 is a graph of a respiration signal extracted from an original signal according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and examples.

Referring to fig. 1-2, an embodiment of the intelligent garment based on piezoelectric film sensor technology according to the present invention includes a garment body 10, and an acquisition module 20 and a controller 30 that are disposed on the garment and detect human body vital sign signals, where the acquisition module 20 includes a piezoelectric film sensor 23, a noise shielding unit 22, and an elastic wire 21, and the piezoelectric film sensor 23 is packaged in the noise shielding unit 22 and connected with the elastic wire 21 to form the acquisition module 20 of an integrated structure; the acquisition module 20 is sewn or stuck to be arranged on the clothing body 1 in a built-in mode and used for acquiring vital signs of people.

Specifically, the method comprises the following steps: as shown in fig. 3, the controller 30 includes a power module, an AD acquisition module, a signal amplification module, a signal filtering module, an MCU and a bluetooth transmission module, the output end of the piezoelectric film sensor 23 is connected to the input end of the AD acquisition module, the output end of the AD acquisition module is connected to the input end of the signal amplification module, the output end of the signal amplification module is connected to the input end of the signal filtering module, the MCU is connected to the bluetooth transmission module as a chip on a circuit board containing the signal amplification module and the signal filtering module, the MCU processes the vital sign signals from the signal filtering module, and the bluetooth transmission module is used for transmitting the vital sign signals to the smart device through bluetooth communication.

Further, as shown in fig. 1, the piezoelectric film sensor 23 is located at a rear shoulder portion of the garment body 10, and the controller 30 is disposed at a position of the garment body 10 corresponding to a waist portion of a human body. The output of the piezoelectric film sensor 23 is connected to the controller 30 via the elastic lead 21.

Still further, the MCU is a microprocessor with a low power consumption mode, and the low power consumption mode can be automatically started when no vital sign is detected.

Preferably, the piezoelectric thin film sensor 23 is a PVDF piezoelectric thin film sensor 23; the power module is a rechargeable battery. The garment body 10 may be an underwear jacket, a close-fitting coat jacket or a vest, or may be other upper body wearing apparel.

Referring to fig. 4, an embodiment of the intelligent garment monitoring system based on the piezoelectric thin film sensor technology in the invention includes the intelligent garment based on the piezoelectric thin film sensor technology, an intelligent device terminal and a background server, wherein a bluetooth sending module sends a vital sign signal to the intelligent device terminal through bluetooth communication, the intelligent device terminal displays the vital sign signal and sends the vital sign signal to the background server through a network for recording and storing.

Further, the background server comprises a storage module, a communication module and a processing unit, the background server is in communication connection with the intelligent device end through a network, and the background server is a cloud server.

The intelligent device end comprises a storage module, a communication module and a Bluetooth sending module, the intelligent device end is an intelligent mobile phone or a tablet computer, and the intelligent mobile phone or the tablet computer stores an APP.

The invention is different from the traditional electrocardiograph and intelligent clothes and has the following differences: the user can monitor the vital signs of the user only after wearing the intelligent garment wearing the piezoelectric film sensor 23 correctly, no matter the intelligent garment is in a sedentary state, a sports state or a sleeping state. The traditional electrocardio detector and the intelligent clothes can only detect vital signs of a user in a relatively static state, and when the user sits or sleeps, signals are weak, so that the gain of the signal amplification module is high, and the amplification factor is large. During movement, due to the large action amplitude, signals acquired by the sensor are strong, and measurement results are often inaccurate and even exceed a measurement range. The invention can search a relative static state in the dynamic process of the user movement, when the signal acquired by the piezoelectric film sensor 23 is very strong and exceeds the measurement range, the piezoelectric film sensor 23 can automatically adjust the gain of the amplification stage to control the signal within a measurable range, and the signal filtering module can also filter the dynamic signal of the user to obtain a relative static heartbeat and respiration signal, thereby reducing the influence of the user movement on the measurement result and ensuring the result to be more accurate.

The piezoelectric film sensor 23 adopted by the invention is very convenient to wear, the piezoelectric film sensor 23 is arranged in specially designed clothes, the specific position is positioned at the shoulder part of a person (the placement position of the piezoelectric film sensor 23 is shown in figure 1), a user only needs to wear the clothes, the controller 30 positioned at the waist is opened, and the smartphone end is connected to the controller 30 by opening a Bluetooth switch for searching. It should be noted that the piezoelectric film sensor 23 located at the shoulder portion needs to be tightly attached to the shoulder of the user, so as to ensure that the piezoelectric film sensor 23 can well collect the signal of the human body, otherwise, the signal is damaged or even lost, and therefore, it is important to place the piezoelectric film sensor 23 at a proper position.

After the user wears the intelligent garment disclosed by the invention, the user can freely do things in daily life, the piezoelectric film sensor 23 can collect vital signs of the user in the daily activity process of the user, such as the daily heart rate, respiration rate, step number and the real-time numerical value of the sedentary time of the user, the change of the daily heart rate or respiration rate can be checked in a graph form, the real-time heart rate and respiration change can be checked by the user during exercise, and the exercise amount and the exercise intensity can be controlled within a reasonable range. The battery in the controller 30 can be used by the user for more than 24 hours, records vital signs of the user all the day, and starts the low power consumption mode when detecting that the user does not wear the piezoelectric film sensor 23, so that energy consumption is saved.

The working principle of the invention is as follows: vital signs of the human body, such as heartbeat, respiration, walking, and the like, are essentially vibration signals, and when the human body performs these physiological activities, corresponding vibration signals are generated, and bones, muscles, and blood of the human body are used as conduction media of the vibrations, which can be transmitted to the skin surface. However, the heartbeat, respiration and walking signals of a person are signals with different frequencies, and when the vibrations with different frequencies are simultaneously conducted to the skin surface of the person, the vibrations are usually reflected as an original signal with a plurality of superposed frequencies, and the heartbeat, the respiration and the walking signals of the person are all contained in the original signal. The piezoelectric film sensor 23 used in the present invention is used as a sensor with very sensitive dynamic response, and can sensitively capture the raw signal (see fig. 6). FIG. 7 is a waveform diagram of a section of the original signal collected by the piezoelectric film sensor 23 according to the present invention; FIG. 8 is a diagram of a heartbeat signal extracted from an original signal according to the present invention; FIG. 9 is a graph of a respiratory signal extracted from the original signal according to the present invention.

Paste collection module 20 at the back shoulder position of clothes body 10 (collection module 20 and controller 30 part position of laying are shown in fig. 1), and the relative all the other positions of the relative health of vital sign signal of this position people are more obvious, and can not influence the normal activity after the people put on the clothes, compare with putting at chest position, greatly reduced the foreign body and felt, increased the comfort level of wearing the clothes. The original signal is collected by the piezoelectric film sensor 23 and then cannot be directly input to the MCU for analysis and processing, because the signal is too weak, the signal needs to be amplified to the degree that the MCU and the algorithm can analyze and process by the signal amplification module, and the signal needs to pass through the signal filtering module after passing through the signal amplification module, which has the function of dividing the signal into four paths, i.e., heartbeat, respiration, walking, and sedentary signals. Then filter these four ways signals respectively, will filter four ways signal input MCU after, have meticulous designed algorithm in the MCU, can be to the signal through going the analysis, calculate people's rhythm of the heart, respiratory rate, walking step number still have parameters such as time of sitting for a long time, the data after will handling send the smart machine end through the bluetooth, can let people audio-visual the vital sign parameter of seeing oneself, the health problem that the timely discovery body exists. And the self exercise amount can be controlled by observing the heart rate and the breathing parameters during exercise, so that the body can be properly exercised. The intelligent device end can also send original data sent by the Bluetooth to the background server, and the background server has big data and a learning algorithm, can analyze potential health problems of a user and can provide the health problems for hospitals and professional health teams.

The working process of the invention is as follows: as shown in fig. 5, the piezoelectric film sensor 23 is disposed at the back shoulder of the garment body 10, and after the user wears the smart garment, the piezoelectric film sensor 23 starts to collect the vital sign signals of the user, and transmits the signals to the controller 30 disposed at the waist through the elastic lead 21, so as to process and analyze the signals. The controller 30 is internally provided with a signal amplification module, a signal filtering module, an MCU and a Bluetooth sending module, wherein the signal amplification module receives a signal from the piezoelectric film sensor 23, amplifies the signal from the piezoelectric film sensor 23, changes high-impedance input into low-impedance output, and amplifies the signal at the moment to obtain good load carrying capacity. The signal filtering module divides the signal from the signal amplifying module into four paths, namely breathing, heartbeat, walking and sedentary signals, then filters out noise in each path of signal, only keeps the signal required in each path, inputs the signal into the MCU, identifies whether the input signal is an effective signal through an algorithm, counts and counts the signals, calculates the breathing rate, the heart rate and the walking step number of a person, identifies whether a user is in a sedentary state or not, and accumulates sedentary time. Then, the information obtained through calculation processing is sent to the intelligent device end through the Bluetooth, and the intelligent device end visually displays the information to the user in the form of a curve graph, numbers and the like, so that the user can conveniently and quickly see the body parameters of the user. And finally, the smart phone end transmits the original data of the user to a background server, judges whether the vital parameters of the user are abnormal according to the preset standard of the background server, sends the data to a professional health team, judges whether the vital signs of the user are abnormal and reminds the user.

(1) The piezoelectric film sensor 23 is a PVDF piezoelectric film sensor, and is configured to collect real-time physiological signals of an object to be measured, as shown in fig. 1. The PVDF piezoelectric film sensor 23 has the characteristics of lightness, thinness, flexibility, capability of working passively, durability, high sensitivity, wide bandwidth range and the like, has acoustic impedance close to water, is particularly suitable for measuring physiological signals of a human body, can measure the vital signs of a user to be measured by using one piezoelectric film sensor 23 due to the high sensitivity of the piezoelectric film sensor 23, and can acquire various real-time vital parameters of the user through signal analysis. Because the piezoelectric film sensor 23 has the characteristics of lightness and thinness, the foreign body sensation can not be generated basically when the piezoelectric film sensor is put on clothes, and the use comfort can be greatly improved. The sensor is packaged in a skin-friendly material in a belt shape or a surface shape, so that the acquisition module 20 is softer, the measurement effect is more sensitive, the piezoelectric film sensor 23 can be protected, the use comfort can be improved, and the sensor is more suitable for long-term measurement.

(2) The noise shielding unit 23 mainly aims at signal acquisition of the piezoelectric film sensor 23, and shielding processing is performed for preventing signal interference, so that signals acquired by the piezoelectric film sensor 23 are clearer and more accurate.

(3) The power supply is a rechargeable battery, provides stable power supply support for the circuit through the power supply conditioning circuit, can be charged and discharged for multiple times, and is convenient for users to use circularly.

(4) The signal amplification module amplifies weak signals transmitted by the piezoelectric film sensor 23, so that the signals transmitted by the piezoelectric film sensor 23 can be clearer, and the signals can be conveniently filtered by the next stage.

(5) The signal filtering module filters noise contained in the required signal, the breathing signal and the walking signal are filtered from the heartbeat signal, the heartbeat signal and the walking signal are filtered from the breathing signal, the breathing signal and the heartbeat signal are filtered from the walking signal, and the breathing signal, the heartbeat signal and the sedentary signal are filtered from the sedentary signal.

(6) MCU is the microprocessor who has the low-power consumption mode, and is small, conveniently wear, can open the low-power consumption mode when not detecting vital sign, makes the use of battery more lasting.

(7) The intelligent device end mainly is that smart mobile phone APP shows, also can be panel computer etc. still can be other intelligent device ends that have display device, and the intelligent device end shows user's vital sign according to the signal data of real-time collection. And upload the data to a backend server (cloud server).

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (10)

1. An intelligent garment based on piezoelectric film sensor technology comprises a garment body, and an acquisition module and a controller which are arranged on the garment and used for detecting human body vital sign signals, and is characterized in that the acquisition module comprises a piezoelectric film sensor, a noise shielding unit and an elastic lead, the piezoelectric film sensor is packaged in the noise shielding unit, and the acquisition module and the elastic lead are connected to form an integrated structure; the collection module is sewn or pasted to be arranged on the intelligent clothes in a built-in mode and used for collecting vital signs of people.

2. The intelligent garment based on piezoelectric thin film sensor technology as claimed in claim 1, wherein the controller comprises a power module, an AD acquisition module, a signal amplification module, a signal filtering module, an MCU and a bluetooth transmission module, wherein the output end of the piezoelectric thin film sensor is connected with the input end of the AD acquisition module, the output end of the AD acquisition module is connected with the input end of the signal amplification module, the output end of the signal amplification module is connected with the input end of the signal filtering module, the MCU and the bluetooth transmission module are welded on a circuit board containing the signal amplification module and the signal filtering module as a chip, the MCU processes the vital sign signals from the signal filtering module, and the bluetooth transmission module is used for transmitting the vital sign signals to the intelligent device end through bluetooth communication.

3. The intelligent clothing based on piezoelectric film sensor technology as claimed in claim 1 or 2, wherein the piezoelectric film sensor is located at a back shoulder position on the clothing body, and the controller is arranged at a position of the clothing body corresponding to the waist of the human body.

4. Smart garment based on piezoelectric thin film sensor technology according to claim 2, characterized in that the MCU is a microprocessor with a low power mode that can be automatically switched on when no vital signs are detected.

5. The intelligent garment based on piezoelectric film sensor technology as claimed in claim 3, wherein the piezoelectric film sensor is a PVDF piezoelectric film sensor; the power module is a rechargeable battery.

6. Intelligent clothing based on piezoelectric film sensor technology according to claim 2 or 4, characterized in that the piezoelectric film sensor is a PVDF piezoelectric film sensor; the power module is a rechargeable battery.

7. Intelligent clothing based on piezoelectric film sensor technology according to claim 1 or 2, characterized in that the body clothing is an underwear jacket, a close-fitting coat or a vest.

8. An intelligent clothing monitoring system based on piezoelectric thin film sensor technology, characterized by comprising the intelligent clothing based on piezoelectric thin film sensor technology, an intelligent device terminal and a background server, wherein the Bluetooth sending module sends a vital sign signal to the intelligent device terminal through Bluetooth communication, the intelligent device terminal displays the vital sign signal and sends the vital sign signal to the background server through a network for recording and storing.

9. The intelligent clothing monitoring system based on piezoelectric thin film sensor technology as claimed in claim 8, wherein the backend server comprises a storage module, a communication module and a processing unit, the backend server is in communication connection with the intelligent device terminal through a network, and the backend server is a cloud server.

10. The intelligent clothing monitoring system based on piezoelectric film sensor technology as claimed in claim 8 or 9, wherein the intelligent device end comprises a storage module, a communication module and a bluetooth sending module, the intelligent device end is a smart phone or a tablet computer, and the smart phone or the tablet computer stores the APP.

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