Fiber-based environmental monitoring system, its manufacturing method, and wearable article

Abstract

The present invention provides a fiber-based environmental monitoring system, a manufacturing method thereof, and a wearable article using the same. The fiber-based environmental monitoring system includes: a fiber-based gas sensor group including at least one fiber-based gas sensor for sensing gas information in the environment where it is located; a fiber-based stress sensor for sensing stress information in the environment where the fiber-based gas sensor is located; and an information processing unit connected to the fiber-based stress sensor for, when the stress in the environment where the fiber-based gas sensor is located exceeds a preset stress threshold, performing at least one of the following actions: not using the current gas information, prompting the user to relieve the stress in the environment, and issuing an alarm to the user. By introducing the fiber-based stress sensor, the present invention can avoid damage to the gas sensor caused by inadvertent actions of the human body. At the same time, in combination with temperature and humidity sensors, gas data can be corrected to improve the accuracy of the data.

Description

Technical Field

[0001] The present invention relates to the field of portable environmental monitoring systems, and in particular, to a fiber-based environmental monitoring system, a manufacturing method thereof, and a wearable article using the same. Background Art

[0002] With the progress of technology, intelligent wearable devices have developed vigorously. Intelligent wearable devices based on clothing can assist people in perceiving and processing information, so as to better perceive the external environment and gradually improve people's work and life.

[0003] Air quality is closely related to health. There are harmful gases in some working environments, which will endanger the lives and health of people who are in them for a long time. In the fields of industrial production, food hygiene, etc., gas monitoring is of great significance. As a component for dynamically monitoring gas concentration, flexible gas sensors have received increasing attention in terms of their design and integration with intelligent wearable systems.

[0004] In the process of implementing the present invention, the applicant found that traditional gas sensors often fail to obtain gas information or even damage the sensors themselves due to the excessive movement of users when cooperating with clothing, and the deviation of gas sensing data caused by environmental temperature and humidity, resulting in the frustration of the application of gas sensors in the wearable field. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] The present invention aims to solve at least one of the above technical problems at least partially.

[0007] (2) Technical Solutions

[0008] To achieve the above object, according to the first aspect of the present invention, there is provided a fiber-based environmental monitoring system, including: a fiber-based gas sensor group including at least one fiber-based gas sensor for sensing gas information in the environment where it is located; a fiber-based stress sensor for sensing stress information in the environment where the fiber-based gas sensor is located; an information processing unit connected to the fiber-based stress sensor, and configured to, when the stress in the environment where the fiber-based gas sensor is located exceeds a preset stress threshold, perform at least one of the following actions: not adopt the current gas information, prompt the user to relieve the stress in the environment, and issue an alarm to the user.

[0009] In some embodiments of the present invention, the fiber-based environmental monitoring system further includes: a fiber-based humidity sensor for sensing humidity information in the environment where the fiber-based gas sensor is located; an information processing unit connected to the fiber-based gas sensor and the fiber-based humidity sensor, and configured to correct the gas information by using the humidity information and the stress information.

[0010] In some embodiments of the present invention, the fiber-based gas sensor group includes: an ammonia sensor, which includes at least one ammonia-sensitive fiber; the ammonia-sensitive fiber includes: a fiber substrate, and an ammonia-sensitive layer of a polyaniline-gold-tin dioxide material formed on the fiber substrate.

[0011] In some embodiments of the present invention, a first stress threshold P1 and a second stress threshold P2 are preset in the information processing unit, where P1 < P2; the information processing unit is configured to: when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P1, do not adopt the current gas information and / or prompt the user to relieve the stress of the environment; when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P2, issue an alarm to the user about the risk of damage to the fiber-based gas sensor.

[0012] In some embodiments of the present invention, the fiber-based gas sensor and the fiber-based stress sensor are disposed on the body side, and the information processing unit includes: a first component disposed on the body side, including: a flexible printed circuit board; a data acquisition module disposed on the flexible printed circuit board and connected to the fiber-based gas sensor and the fiber-based stress sensor for collecting gas information and stress information; a wireless transmission module disposed on the flexible printed circuit board and connected to the data acquisition module for transmitting the collected gas data and stress data outward; a second component disposed on the terminal side, including: a wireless reception module connected to the Bluetooth transmission module by Bluetooth for receiving gas data and stress data; an action module connected to the wireless reception module for performing corresponding actions when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold.

[0013] In some embodiments of the present invention, the wireless transmission module and the wireless reception module are a Bluetooth transmission module and a Bluetooth reception module respectively; on the body side, the fiber-based gas sensor and the fiber-based humidity sensor are connected to the data acquisition module through two-end electrodes and silver conductive fibers.

[0014] In some embodiments of the present invention, the fiber-based environmental monitoring system further includes: a flexible thermoelectric generator disposed on the body side, which is composed of multiple groups of π-shaped thermoelectric units connected, and the π-shaped thermoelectric unit is arranged by p-type thermoelectric fibers and n-type thermoelectric fibers for supplying power to the data acquisition module and the Bluetooth transmission module.

[0015] In some embodiments of the present invention, the fiber-based environmental monitoring system further includes: a chemical warfare agent sensor, which includes: k chemical warfare agent detection bands for sensing chemical warfare agent information in the surrounding environment, and each chemical warfare agent detection band includes: a fiber substrate, and a chemical warfare agent-sensitive layer formed on the fiber substrate, where k ≥ 2.

[0016] In some embodiments of the present invention, the fiber-based environmental monitoring system further includes: a fiber-based temperature sensor, and the fiber-based temperature sensor includes: s bundles of temperature-sensitive fibers; each bundle of temperature-sensitive fibers includes: a fiber substrate; and a temperature-sensitive layer formed on the fiber substrate, where s≥2.

[0017] In some embodiments of the present invention, the fiber-based humidity sensor includes: m bundles of humidity-sensitive fibers; each bundle of humidity-sensitive fibers includes: a fiber substrate; and a humidity-sensitive layer formed on the fiber substrate, where m≥2.

[0018] In some embodiments of the present invention, the fiber-based stress sensor includes: r bundles of stress-sensitive fibers; each bundle of stress-sensitive fibers includes: a fiber substrate; and a stress-sensitive layer formed on the fiber substrate, where r≥2.

[0019] In some embodiments of the present invention, the fiber-based gas sensor is one or more of the following sensors: ammonia sensor, nitrogen dioxide sensor, sulfur dioxide sensor, carbon monoxide sensor; the fiber-based gas sensor includes n bundles of gas-sensitive fibers; each bundle of gas-sensitive fibers includes: a fiber substrate, and a corresponding gas-sensitive layer formed on the fiber substrate, where n≥2.

[0020] In some embodiments of the present invention, the gas information includes: the component information and / or the content information of the gas.

[0021] In some embodiments of the present invention, the fiber substrate is a nylon braided fiber.

[0022] In some embodiments of the present invention, the chemical warfare agent sensitive layer is formed by one or more of the following materials: dithiodibenzoquinone monomer, o-phenylenediamine-roanin, bromocresol green.

[0023] In some embodiments of the present invention, in the flexible thermoelectric power generation device, the material of the P-type thermoelectric fiber is: Bi0.5Sb1.5Te3; the material of the N-type thermoelectric fiber is Bi 2 Te 2.73 Se 0.3 。

[0024] In some embodiments of the present invention, for the fiber-based humidity sensor, the humidity-sensitive layer is formed by one of the following materials: MXene, gold nanoparticles / graphene oxide / thiolated silica sol-gel, Fe3+ ion coordinated polyacrylic acid ion gel.

[0025] In some embodiments of the present invention, for the fiber-based stress sensor, the stress-sensitive layer is formed by one of the following materials: graphene oxide; MXene / multi-walled carbon nanotubes; the attached dry product of crosslinked chitosan quaternary ammonium salt and liquid metal composite hydrogel.

[0026] In some embodiments of the present invention, for the fiber-based temperature sensor, the temperature-sensitive layer is formed of one of the following materials: carbon nanotubes, multi-walled carbon nanotubes, poly(3,4-ethylenedioxythiophene) / polystyrene sulfonate (PEDOT:PSS), and the attached dry matter of PEDOT:PSS / silver nanowires.

[0027] In some embodiments of the present invention, for the ammonia sensor, the ammonia-sensitive layer is formed of one of the following materials: polyaniline, the composite material of polyaniline-nanogold-tin dioxide, the composite material of nickel oxide and copper oxide, the composite material of polypyrrole-titanium dioxide-gold, and the nanocomposite of polyaniline multi-walled carbon nanotubes.

[0028] In some embodiments of the present invention, for the nitrogen dioxide sensor, the nitrogen dioxide-sensitive layer is formed of one of the following materials: reduced graphene, the composite material of reduced graphene and zinc oxide, carbon nanotubes, titanium dioxide nanotubes, and palladium-sensitized molybdenum trioxide nanoribbons.

[0029] In some embodiments of the present invention, for the sulfur dioxide sensor, the sulfur dioxide-sensitive layer is formed of one of the following materials: chemically modified graphene oxide, the composite material of reduced graphene oxide-coated nano titanium oxide, and the composite material of doped poly(phenylene) nanoparticles and zeolite composite.

[0030] In some embodiments of the present invention, for the carbon monoxide sensor, the carbon monoxide-sensitive layer is formed of one of the following materials: the nanocomposite of WO3-graphene, Cu-doped cryptomelane octahedral molecular sieve nanofibers, the nanocomposite of polypyrrole and titanium dioxide, the composite material of polypyrrole and graphene oxide, and nanogold-doped polyaniline.

[0031] In some embodiments of the present invention, for the fiber-based gas sensor, its dimensions satisfy: the length is greater than 30 mm, the width is greater than 2 mm, and the thickness is less than 1 mm; for the fiber-based humidity sensor, its dimensions satisfy: the length is greater than 30 mm, the width is greater than 2 mm, and the thickness is less than 1 mm; for the fiber-based stress sensor, its dimensions satisfy: the length is greater than 30 mm, the width is greater than 30 mm, and the thickness is less than 1 mm; for the fiber-based temperature sensor, its dimensions satisfy: the length is greater than 30 mm, the width is greater than 30 mm, and the thickness is less than 1 mm; for the flexible thermoelectric device, its dimensions satisfy that the length and width are greater than 300 mm and the thickness is less than 5 mm: for the first component of the information processing unit, its length is less than 50 mm, the width is less than 20 mm, and the thickness is less than 10 mm.

[0032] In some embodiments of the present invention, both the length and width of the fiber-based stress sensor are greater than those of the fiber-based gas sensor, and the fiber-based gas sensor is disposed on the fiber-based stress sensor.

[0033] In some embodiments of the present invention, the fiber-based environmental monitoring system further includes: a fiber-based temperature sensor; the fiber-based gas sensor group includes: a carbon monoxide sensor; the action module is further configured to: evaluate the degree of explosion risk according to the environmental temperature detected by the fiber-based temperature sensor and the carbon monoxide concentration detected by the carbon monoxide sensor, and issue an alarm to the user when the explosion risk is greater than a preset threshold.

[0034] To achieve the above object, according to the second aspect of the present invention, there is also provided a manufacturing method for manufacturing the above fiber-based environmental monitoring system, including:

[0035] Obtain the first components of the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, fiber-based stress sensor, chemical warfare agent detection strip, flexible thermoelectric generator, and information processing unit;

[0036] Integrate the first components of the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, fiber-based stress sensor, chemical warfare agent detection strip, flexible thermoelectric generator, and information processing unit onto the fabric of the wearable article body;

[0037] Perform the following electrical connections through the silver conductive fibers in the fabric sandwich of the wearable article: the data acquisition module is connected to the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, and fiber-based stress sensor; the flexible thermoelectric generator is connected to the data acquisition module and the wireless transmission module.

[0038] In some embodiments of the present invention, the steps of manufacturing the fiber-based gas sensor include: attaching the corresponding gas-sensitive material to the fiber substrate by an impregnation method, a coating method, or a grafting method, and then drying.

[0039] In some embodiments of the present invention, the steps of manufacturing the flexible thermoelectric generator include: preparing p-type thermoelectric fibers and n-type thermoelectric fibers; arranging the p-type thermoelectric fibers and n-type thermoelectric fibers to form a π-shaped thermoelectric unit, and connecting multiple groups of π-shaped thermoelectric units together to form the flexible thermoelectric generator. Among them, the p-type thermoelectric fibers and n-type thermoelectric fibers are respectively made by mixing the corresponding alloy powders with a matrix as a slurry and extruding and curing. Among them, the p-type alloy powder is: Bi0.5Sb1.5Te3 powder, the n-type alloy powder is: Bi2Te2.73Se0.3, and the matrix is a hydrogel.

[0040] To achieve the above object, according to the second aspect of the present invention, there is also provided a wearable article, including: a wearable article body, which is cut and sewn from fabric; and the above-mentioned fiber-based environmental monitoring system integrated in the fabric; wherein, the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, and fiber-based stress sensor are arranged on the wearable article body, and the silver conductive fiber is arranged in the fabric sandwich of the wearable article body.

[0041] (III) Beneficial effects

[0042] It can be seen from the above technical solutions that the present invention has at least one of the following beneficial effects:

[0043] (1) The fiber-based stress sensor is integrated. When the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P1, the gas information will have a large error, and the information processing unit can discard or not adopt the current gas data, so as to maintain the accuracy and robustness of the gas information. In addition, further, when the preset stress P2 is exceeded, the fiber-based gas sensor may be damaged. At this time, the information processing unit alarms or prompts the user to relieve the environmental stress to prevent irreversible damage to the fiber-based gas sensor.

[0044] In addition, due to the presence of the fiber-based stress sensor, it can also be used for monitoring movements, etc. or correcting the gas information using the stress information to obtain more accurate gas information.

[0045] (2) The gas-sensitive material is greatly affected by humidity. Taking polyaniline as an example, polyaniline itself has hydrophilicity, and in a humid environment, the response degree will become smaller. In this embodiment, the gas information can be corrected according to the humidity information, so as to determine whether the concentration of harmful gases exceeds the safety value, greatly improving the accuracy of harmful gas monitoring.

[0046] The response value of the gas-sensing material to a certain concentration of gas will deviate at different temperatures. At higher temperatures, the response degree is higher. On the one hand, the gas detection data can be calibrated according to the temperature. On the other hand, at higher temperatures, the temperature sensor can give an early warning in a special scenario where there are some flammable and explosive gases, such as carbon monoxide, to safeguard life safety.

[0047] (3) The fiber-based stress sensor has a large area and a certain strength. Therefore, arranging the fiber-based gas sensor on the fiber-based stress sensor can, on the one hand, make the stress information obtained by the fiber-based stress sensor more accurate and direct, and on the other hand, can also play a certain protective role for the fiber-based gas sensor.

[0048] (4) Polyaniline-gold-tin dioxide composite material is used as the ammonia-sensitive material to fabricate the ammonia sensor. The n-type SnO2 A p-n junction is formed between the particles and the p-type polyaniline coating outside them. The existence of the p-n junction can greatly improve the sensitivity of the sensitive material to ammonia. In addition, the nano-gold loaded on the tin dioxide particles plays a doping and catalytic role, improving the conductivity, promoting the carrier transport of the p-n junction, and further enhancing the sensitive performance of the ammonia sensor.

[0049] (5) The information processing unit includes: a first component on the body side and a second component on the terminal side. The first component mainly performs data acquisition and transmission, and data processing and actions are concentrated in the second component on the terminal side, minimizing the number of components on the body side as much as possible, improving the system reliability, and avoiding the impact on the functions of the wearable itself.

[0050] (6) The first component and the second component are connected by wireless means such as Bluetooth. Each element inside the first component is connected by silver conductive fibers, improving the convenience of the wearable and making it more acceptable to the target group.

[0051] (7) A warfare agent detection belt is added to the system to expand the application range, enabling the gas-sensitive fiber bundle to detect whether there are chemical warfare agents in the battlefield environment. By setting two warfare agent detection belts, the detection results can be mutually verified, improving the reliability of the detection results.

[0052] The system includes a temperature sensor and a harmful gas sensor, which can detect harmful gases in case of chemical leakage, explosion or fire and give early warnings to avoid danger.

[0053] (8) The flexible thermoelectric power generation device adopted can generate electricity from the temperature difference between the body temperature and the external environment, realizing the self-power supply of the entire sensing and testing system. Compared with common lithium batteries, lithium-ion batteries, etc., it has less risk of breakage and leakage, is safer and more reliable. In addition, it can supply power stably for a long time. And proper encapsulation can make it durable and does not need to be replaced frequently.

[0054] Furthermore, after simple encapsulation, the flexible thermoelectric power generation device can be easily woven into clothes, has strong expansion ability, and can increase the power by expanding the area. It can achieve self-power supply, supply the entire detection system, and avoid the problem of battery life. At the same time, being woven into clothes, it is soft and comfortable.

[0055] (9) The nylon braided fiber woven from nylon elastic yarn is used as the fiber substrate of the fiber-based flexible sensor. Since it is machine-woven itself, it has small and uniform mesh holes, and the sensitive material is tightly combined with it and is not easy to fall off, ensuring the long-term stability and durability of the fiber-based gas sensor and the fiber-based stress sensor.

[0056] Polyamide elastic yarn has excellent flexibility and certain stretchability. As a wearable device, it is soft, small and light. Preparing stress sensors and gas sensors on it can maximize the comfort problems during wearing.

[0057] (10) Ammonia sensors, nitrogen dioxide sensors, sulfur dioxide sensors, carbon monoxide sensors, etc. are integrated in the system. In the multi-sensor cooperation mode, it can comprehensively understand the harmful gas conditions of the surrounding environment.

[0058] (11) The fibrous sensors are prepared on the polyamide woven fibers by the impregnation method / dip coating method. Compared with the straight and smooth single fiber, the fine structure is more conducive to the adhesion of materials, and the structure of the woven fiber itself is also conducive to the dispersion of stress and is not easily damaged.

[0059] (12) The fiber-based environmental monitoring system of the present invention can be easily integrated with wearable items such as hats, masks, and coats. It moves with the human body and can detect the concentration of toxic and harmful gases in the environment where the human body is located in real time, so as to prevent relevant personnel from staying in a harmful environment for a long time. Description of the Drawings

[0060] Figure 1 It is a schematic structural diagram of the fiber-based environmental monitoring system according to the embodiment of the present invention.

[0061] Figure 2 It is a flowchart of the manufacturing method of the fiber-based environmental monitoring system according to the embodiment of the present invention. Detailed Embodiments

[0062] The present invention provides a fiber-based environmental monitoring system by combining various fiber sensors and selecting materials, connection methods, etc. It can be easily integrated with wearable items such as hats, masks, and coats, and has the advantages of accurate information providing and comfortable wearing.

[0063] To make the purpose, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and the accompanying drawings.

[0064] Figure 1 It is a schematic structural diagram of the fiber-based environmental monitoring system according to the embodiment of the present invention. As Figure 1 shown, the fiber-based environmental monitoring system of this embodiment includes:

[0065] The fiber-based gas sensor group 100, including multiple gas sensors, is used to sense the gas information of the surrounding environment;

[0066] The fiber-based stress sensor 210 is used to sense the stress information of the environment where the fiber-based gas sensor is located;

[0067] A fiber-based humidity sensor 220 for sensing the humidity information of the environment where the fiber-based gas sensor is located;

[0068] A fiber-based temperature sensor 250 for sensing the temperature information of the environment where the fiber-based gas sensor is located;

[0069] A chemical warfare agent detection strip 230 for sensing the chemical warfare agent information of the environment where it is located;

[0070] A flexible thermoelectric power generation device 240 for supplying energy to the first component on the body side of the information processing unit;

[0071] An information processing unit 300, connected to the fiber-based gas sensor and the fiber-based humidity sensor, for processing gas information, stress information, humidity information, etc.

[0072] For those skilled in the art to understand the structure of the completed present application, the various components of the fiber-based environmental monitoring system are given above. However, those skilled in the art should be able to know that this is only the optimal embodiment of the present invention. To solve the technical problem that the gas information fails or the sensor itself is damaged due to the user's excessive movement amplitude, only the fiber-based gas sensor 100, the fiber-based stress sensor 210, and the information processing unit are required. The functions and further solved technical problems of other sensors will be described in detail below.

[0073] The following will separately describe in detail each component of the fiber-based environmental monitoring system of this embodiment.

[0074] In the prior art, when bending or stretching, it often causes a large deviation in the gas information sensing data. And if the stress is too large, it may cause irreversible physical damage to the fiber-based gas sensor.

[0075] In this embodiment, a fiber-based stress sensor is provided, so as to obtain the stress information of the environment where the fiber-based gas sensor is located. Based on this stress information, the information processing unit can perform the following operations:

[0076] ① Do not adopt the current gas information;

[0077] Those skilled in the art should understand that if the stress of the environment where the fiber-based gas sensor is located is too large, the gas information collected by it will be seriously distorted, which will not only affect the validity of the current data, but also affect the validity of the front and back gas data. Therefore, it is an ideal situation to discard this part of the data.

[0078] ② Prompt the user to relieve the environmental stress or alarm the user

[0079] To avoid the situation of long-term lack of gas data, a prompt can be sent to the user to prompt them to change their posture or relax the clothing on the sensitive fiber bundle area, so as to obtain accurate gas information. In particularly serious cases, an alarm needs to be sent to the user to prevent physical and irreversible damage to the fiber-based environmental monitoring system.

[0080] Furthermore, a first stress threshold P1 and a second stress threshold P2 are preset in the information processing unit, where P1 < P2; the information processing unit is configured to: when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P1, do not adopt the current gas information and prompt the user to relieve the stress in the environment; when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P2, send an alarm to the user about the risk of damage to the fiber-based gas sensor.

[0081] Those skilled in the art should be able to understand that when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P1, the gas information will have a large error, and the information processing unit can discard or not adopt the current gas data, so as to maintain the accuracy and robustness of the gas information. In addition, further, when the preset stress P2 is exceeded, the fiber-based gas sensor and the fiber-based stress sensor itself may be damaged. At this time, the information processing unit alarms or prompts the user to relieve the environmental stress to prevent irreversible damage to the fiber-based gas sensor. In addition, due to the presence of the fiber-based stress sensor, it can also be used for monitoring movements, etc. or correcting the gas information using the stress information to obtain more accurate gas information.

[0082] In another preferred embodiment of the present invention, the length and width of the fiber-based stress sensor are both greater than the length and width of the fiber-based gas sensor, and the fiber-based gas sensor is disposed on the fiber-based stress sensor. Those skilled in the art should be able to understand that the fiber-based stress sensor has a larger area and a certain strength. Therefore, disposing the fiber-based gas sensor on the fiber-based stress sensor can, on the one hand, make the stress information obtained by the fiber-based stress sensor more accurate and direct, and on the other hand, can also have a certain protective effect on the fiber-based gas sensor.

[0083] In the process of implementing the present invention, the applicant found that temperature and humidity have a great impact on the accuracy of gas information. Ignoring the temperature and humidity factors will cause the gas information to deviate seriously from the correct value and cannot be used. In terms of humidity, taking polyaniline as an example, polyaniline itself has hydrophilicity, and in a humid environment, the response degree will become smaller. In terms of temperature, taking metal oxides as an example, in a high-temperature environment, the response degree will become larger.

[0084] To solve the above technical problems, in this embodiment, in addition to the fiber-based stress sensor, it further includes: a fiber-based humidity sensor 220 and a fiber-based temperature sensor 250, which are used to sense the temperature and humidity information of the environment where the fiber-based gas sensor is located. An information processing unit 300 is connected to the fiber-based gas sensor, the fiber-based humidity sensor 220, and the fiber-based temperature sensor 250, and is used to correct the gas information by using the temperature, humidity information, and stress information. Through the above settings, this embodiment can correct the gas information according to the temperature and humidity information and the stress information, greatly improving the accuracy of harmful gas monitoring. In this embodiment, the information processing unit includes: a first component disposed on the body side and a second component disposed on the terminal side. The first component mainly performs data sensing, collection, and transmission, and data processing and actions are concentrated in the second component on the terminal side, minimizing the number of components on the body side as much as possible and improving the system reliability and the impact on the functions of the wearable itself. The first component and the second component are connected by wireless means such as Bluetooth, and the components inside the first component are connected by silver conductive fibers, improving the convenience of the wearable and making it more acceptable to the target group.

[0085] Further, the first component includes: a flexible printed circuit board; a data acquisition module disposed on the flexible printed circuit board and connected to the fiber-based gas sensor, the fiber-based temperature sensor, and the fiber-based humidity sensor, and is used to acquire data on gas information, temperature information, and humidity information; a wireless transmission module disposed on the flexible printed circuit board and connected to the data acquisition module, and is used to transmit the acquired gas data and stress data outward. The second component includes: a wireless reception module connected to the Bluetooth transmission module by Bluetooth and is used to receive gas data and stress data; an action module connected to the Bluetooth reception module and is used to alarm or prompt the user to relieve the stress of the environment when the stress in the environment where the fiber-based gas sensor is located exceeds a preset stress threshold; wherein, the fiber-based gas sensor, the fiber-based temperature sensor, and the fiber-based humidity sensor are disposed on the body side, and the size of the flexible printed circuit board satisfies: the length is less than 50 mm, the width is less than 20 mm, and the thickness is less than 10 mm.

[0086] Among them, the material of the flexible printed circuit board can be selected as polyester film, polyimide film, etc., which can further improve the wearable performance of the environmental monitoring system in this embodiment.

[0087] In this embodiment, the fiber-based gas sensor is one or more of the following sensors: ammonia sensor, nitrogen dioxide sensor, sulfur dioxide sensor, carbon monoxide sensor. For each fiber-based gas sensor, it includes n bundles of gas-sensitive fibers, where n≥2. Each bundle of gas-sensitive fibers includes: a fiber substrate, and a corresponding gas-sensitive layer formed on the fiber substrate. The fiber-based stress sensor includes: r bundles of stress-sensitive fibers; each bundle of stress-sensitive fibers includes: a fiber substrate; and a stress-sensitive layer formed on the fiber substrate, where r≥2. The fiber-based humidity sensor includes: m bundles of humidity-sensitive fibers; each bundle of humidity-sensitive fibers includes: a fiber substrate; and a humidity-sensitive layer formed on the fiber substrate, where m≥2. The fiber-based temperature sensor includes: s bundles of temperature-sensitive fibers; each bundle of temperature-sensitive fibers includes: a fiber substrate; and a temperature-sensitive layer formed on the fiber substrate, where s≥2. The chemical warfare agent sensor includes: k chemical warfare agent detection strips for sensing chemical warfare agent information in the surrounding environment, and each chemical warfare agent detection strip includes: a fiber substrate, and a chemical warfare agent-sensitive layer formed on the fiber substrate, where k≥2.

[0088] For each of the above sensors, the fiber substrate is made of nylon braided fiber. The nylon braided fiber made of nylon stretch yarn is used as the substrate of the fiber-based flexible sensor. Since it is machine-woven itself, it has small and uniform mesh holes, and the sensitive material is tightly combined with it and is not easy to fall off, ensuring the stability and durability of the fiber-based gas sensor and the fiber-based stress sensor during long-term use. In addition, the nylon stretch yarn has excellent flexibility and certain stretchability. Compared with the fine structure of a straight and smooth single fiber, it is more conducive to the attachment of materials. The structure of the braided fiber itself is also conducive to the dispersion of stress and is not easy to be damaged. As a wearable device, it is soft, small and light. Preparing stress sensors and gas sensors on it can maximize the avoidance of comfort problems during wearing.

[0089] Those skilled in the art should understand that in addition to nylon braided fiber, other fibers with fine structure, good adsorption capacity, softness and stretchability can be used for substitution.

[0090] I. Chemical Warfare Agent Sensor

[0091] In this embodiment, the chemical warfare agent sensor includes 2 chemical warfare agent detection strips, which are respectively located on both sides of the fiber-based gas sensor group.

[0092] The structure of each chemical warfare agent detection strip includes: a fiber substrate, and a chemical warfare agent-sensitive layer formed on the fiber substrate. Preferably, the substrate is nylon braided fiber; the chemical warfare agent-sensitive layer is formed by one or more of the following materials: dithiodibenzoquinone monomer, o-phenylenediamine-ronin, bromocresol green.

[0093] In this embodiment, a warfare agent detection strip is added to the system to expand the application scope, enabling the gas-sensitive fiber bundle to detect whether there are chemical warfare agents in the battlefield environment. By setting two warfare agent detection strips, the detection results can be mutually verified, improving the reliability of the detection results.

[0094] II. Flexible thermoelectric power generation and transmission device

[0095] The flexible thermoelectric power generation device 240 is disposed on the body side and is composed of a plurality of groups of π-shaped thermoelectric units connected. The π-shaped thermoelectric unit is arranged by p-type thermoelectric fibers and n-type thermoelectric fibers, and is used to supply power to the data acquisition module and the Bluetooth transmission module. The size of the flexible thermoelectric power generation device meets the requirements that the length and width are greater than 300 mm and the thickness is less than 5 mm.

[0096] Preferably, in the flexible thermoelectric power generation device, the material of the P-type thermoelectric fiber is: Bi 0.5 Sb 1.5 Te 3 ; the material of the N-type thermoelectric fiber is Bi 2 Te 2.73 Se 0.3 .

[0097] In this embodiment, after simple encapsulation, the flexible thermoelectric power generation device can be easily woven into clothes, has strong expansion ability, and can increase the power by expanding the area. It can achieve self-power supply to supply the entire detection system and avoid the problem of battery life.

[0098] III. Fiber-based temperature sensor

[0099] The fiber-based temperature sensor includes: 2 bundles of temperature-sensitive fibers; each bundle of temperature-sensitive fibers includes: a fiber substrate; and a temperature-sensitive layer formed on the fiber substrate. Among them, the size of the fiber-based temperature sensor meets the requirements that the length is greater than 30 mm, the width is greater than 2 mm, and the thickness is less than 1 mm.

[0100] Preferably, the substrate is a nylon braided fiber; the temperature-sensitive layer is formed by one of the following materials: carbon nanotubes, multi-walled carbon nanotubes, poly(3,4-ethylenedioxythiophene) / polystyrenesulfonate (PEDOT:PSS), PEDOT:PSS / silver nanowires.

[0101] Of course, those skilled in the art can design the size of the fiber-based temperature sensor, the number of bundles of temperature-sensitive fibers, and the material of the temperature-sensitive layer as needed, which will not be elaborated here.

[0102] IV. Fiber-based humidity sensor

[0103] The fiber-based humidity sensor includes: two bundles of humidity-sensitive fibers; each bundle of humidity-sensitive fibers includes: a fiber substrate; and a humidity-sensitive layer formed on the fiber substrate. Among them, the size of the fiber-based humidity sensor satisfies: the length is greater than 30 mm, the width is greater than 2 mm, and the thickness is less than 1 mm.

[0104] Preferably, the substrate is a nylon braided fiber; the humidity-sensitive layer is formed of one of the following materials: MXene, gold nanoparticles / graphene oxide / thiolated silica sol-gel, Fe 3+ ion-coordinated polyacrylic acid ion gel.

[0105] Of course, those skilled in the art can design the size of the fiber-based humidity sensor, the number of bundles of temperature-sensitive fibers, and the material of the humidity-sensitive layer according to needs, which will not be elaborated here.

[0106] V. Fiber-based stress sensor

[0107] In this embodiment, the fiber-based stress sensor includes: two bundles of stress-sensitive fibers; each bundle of stress-sensitive fibers includes: a fiber substrate; and a stress-sensitive layer formed on the fiber substrate. Among them, the size of the fiber-based pressure sensor satisfies: the length is greater than 30 mm, the width is greater than 30 mm, and the thickness is less than 1 mm.

[0108] Preferably, the substrate is a nylon braided fiber; the stress-sensitive layer is formed of one of the following materials: graphene oxide; MXene / multi-walled carbon nanotubes; the adhered and dried product of crosslinked chitosan quaternary ammonium salt and liquid metal composite hydrogel.

[0109] Of course, those skilled in the art can design the size of the fiber-based stress sensor, the number of bundles of stress-sensitive fibers, and the material of the stress-sensitive layer according to needs, which will not be elaborated here.

[0110] VI. Fiber-based gas sensor

[0111] For all fiber-based gas sensors, their size satisfies: the length is greater than 30 mm, the width is greater than 2 mm, and the thickness is less than 1 mm. Any fiber-based gas sensor includes n bundles of gas-sensitive fibers; each bundle of gas-sensitive fibers includes: a fiber substrate, and a corresponding gas-sensitive layer formed on the fiber substrate, where n≥2.

[0112] Among them, the substrates are all nylon braided fibers. The fiber-based gas sensor group includes one or more of the following sensors: ammonia sensor, nitrogen dioxide sensor, sulfur dioxide sensor, carbon monoxide sensor.

[0113] A variety of sensors are integrated in the system, and the multi-sensor cooperation method can comprehensively understand the harmful gas conditions of the surrounding environment.

[0114] In Figure 1 In the illustrated embodiment, the fiber-based gas sensor group includes: an ammonia sensor 110, a nitrogen dioxide sensor 120, and a sulfur dioxide sensor 130. Each gas sensor includes 4 bundles of gas-sensitive fibers. By setting 3 groups of gas-sensitive fibers, the randomness and error of the structure caused by a single fiber are avoided, and the concentration of harmful gases is further comprehensively determined.

[0115] 1. Ammonia sensor

[0116] For the ammonia sensor 110, it includes 4 bundles of ammonia-sensitive fibers. Each bundle of ammonia-sensitive fibers includes: a fiber substrate, and an ammonia-sensitive layer formed on the fiber substrate.

[0117] Among them, the fiber substrate is a woven fiber, and the ammonia-sensitive layer is formed by one of the following materials: polyaniline, a composite material of polyaniline-nanogold-tin dioxide, a composite material of nickel oxide and copper oxide, a composite material of polypyrrole-titanium dioxide-gold, and a nanocomposite material of polyaniline multi-walled carbon nanotubes.

[0118] In a preferred embodiment of the present invention, the material of the ammonia-sensitive layer is a polyaniline-gold-tin dioxide material. The n-type SnO 2 A p-n junction is formed between the particles and the p-type polyaniline coating outside them. The existence of the p-n junction can greatly improve the sensitivity of the sensitive material to ammonia. And the nanogold loaded on the tin dioxide particles plays a doping and catalytic role, improving the conductivity, promoting the carrier transport of the p-n junction, and further enhancing the sensitive performance of the ammonia sensor.

[0119] 2. Nitrogen dioxide sensor

[0120] For the nitrogen dioxide sensor 120, it includes 4 bundles of nitrogen dioxide-sensitive fibers. Each bundle of nitrogen dioxide-sensitive fibers includes: a fiber substrate, and a nitrogen dioxide-sensitive layer formed on the fiber substrate.

[0121] Among them, the fiber substrate is a woven fiber, and the nitrogen dioxide-sensitive layer is formed by one of the following materials: reduced graphene, a composite material of reduced graphene and zinc oxide, carbon nanotubes, titanium dioxide nanotubes, and palladium-sensitized molybdenum trioxide nanoribbons.

[0122] 3. Sulfur dioxide sensor

[0123] For the sulfur dioxide sensor 130, it includes 4 bundles of sulfur dioxide-sensitive fibers. Each bundle of sulfur dioxide-sensitive fibers includes: a fiber substrate, and a sulfur dioxide-sensitive layer formed on the fiber substrate.

[0124] Among them, the fiber substrate is woven fiber, and the sulfur dioxide sensitive layer is formed by one of the following materials: chemically modified graphene oxide, a composite material of reduced graphene oxide coated with nano titanium oxide, a composite material of a composite of doped poly(phenylene) nanoparticles and zeolite composite material.

[0125] 4. Carbon monoxide sensor

[0126] For the carbon monoxide sensor (not shown in the figure), it includes 4 bundles of carbon monoxide sensitive fibers. Each bundle of carbon monoxide sensitive fibers includes: a fiber substrate, and a carbon monoxide sensitive layer formed on the fiber substrate.

[0127] Among them, the fiber substrate is woven fiber, and the carbon monoxide sensitive layer is formed by one of the following materials: WO 3 - A nanocomposite of graphene, a Cu-doped cryptomelane octahedral molecular sieve nanofiber, a nanocomposite of polypyrrole and titanium dioxide, a composite of polypyrrole and graphene oxide, and gold nanoparticle-doped polyaniline.

[0128] Those skilled in the art can also understand that carbon monoxide is a dangerous gas and there is a risk of explosion when the temperature is higher than a certain level. Therefore, the action module is further configured to: evaluate the degree of explosion risk according to the ambient temperature detected by the fiber-based temperature sensor and the carbon monoxide concentration detected by the carbon monoxide sensor, and issue an alarm to the user when the explosion risk is greater than a preset threshold. This function is particularly important in battlefield environments and coal mine underground working environments.

[0129] The fiber-based environmental monitoring system of this embodiment can be easily integrated with wearable items such as hats, masks, and coats, move with the human body, and detect the concentration of toxic and harmful gases in the environment where the human body is located in real time, so as to prevent relevant personnel from staying in a harmful environment for a long time, and is particularly suitable for use by special environment workers or people with sensitive bodies.

[0130] So far, the introduction of the fiber-based environmental monitoring system of the embodiment of the present invention is completed.

[0131] According to the second aspect of the present invention, a manufacturing method is further provided for manufacturing the fiber-based environmental monitoring system as described above. Figure 2 This is a flowchart of the manufacturing method of the fiber-based environmental monitoring system of the embodiment of the present invention. As Figure 2 shown, the manufacturing method of the fiber-based environmental monitoring system of this embodiment includes:

[0132] Step A, obtaining first components of a fiber-based gas sensor, a fiber-based humidity sensor, a fiber-based temperature sensor, a fiber-based stress sensor, a chemical warfare agent detection strip, a flexible thermoelectric generator, and an information processing unit;

[0133] Step B: Integrate the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, fiber-based stress sensor, chemical warfare agent detection strip, flexible thermoelectric generator, and the first component of the information processing unit onto the fabric of the wearable article body;

[0134] Step C: Conduct the following electrical connections through the silver conductive fibers in the fabric sandwich of the wearable article: The data acquisition module is connected to the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, and fiber-based stress sensor; The flexible thermoelectric generator is connected to the data acquisition module and the wireless transmission module;

[0135] Step D: Establish a signal connection between the Bluetooth receiving module of the mobile terminal and the Bluetooth transmitting module in the first component, and receive the fiber-based gas sensor, fiber-based humidity sensor, fiber-based stress sensor, chemical warfare agent detection strip, and flexible thermoelectric generator, and set the application program of the mobile terminal.

[0136] Through the application program of the mobile terminal, the corresponding functions can be realized:

[0137] ① Display the composition and content information of the harmful gases obtained by each gas sensor, as well as the extended information obtained based on this information, such as health advice, etc.;

[0138] ② When the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P1, do not adopt the current gas information and prompt the user to relieve the stress in the environment;

[0139] ③ When the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P2, issue an alarm to the user about the risk of damage to the fiber-based gas sensor.

[0140] The following further describes Step A. It should be noted in advance that the following is only the preferred implementation mode of the present invention. In Step A or the steps of preparing each device, in addition to the above-mentioned impregnation and coating methods, the attachment method of the sensitive material on the substrate can also adopt methods such as modified grafting. In addition to the given selection, the sensitive material can also select other advanced composite gas-sensitive materials with lower detection limits and higher response degrees, such as polyaniline nanoink, etc.

[0141] In this embodiment, Step A further includes the following parallel steps:

[0142] Sub-step A1: Prepare each fiber-based gas sensor;

[0143] In this embodiment, an ammonia sensor, a nitrogen dioxide sensor, a sulfur dioxide sensor, a carbon monoxide sensor, etc. are integrated in the system. The multi-sensor cooperation method can comprehensively understand the harmful gas conditions in the surrounding environment.

[0144] This sub-step A1 further includes:

[0145] Sub-step A1a, prepare an ammonia sensor;

[0146] Use polyaniline, polyaniline-nano gold-tin dioxide composite material, composite nickel oxide copper oxide (NiO@CuO) composite material, polypyrrole-titanium dioxide-gold composite material, polyaniline multi-walled carbon nanotube nanocomposite material, etc. as sensitive materials. Add nylon braided fiber as a carrier during polymerization or compounding, or coat the sensitive material on the fiber surface. After drying, ammonia-sensitive fiber is formed.

[0147] Arrange multiple bundles of ammonia sensing fibers, make electrodes at both ends to connect wires, and connect to the information processing unit for subsequent real-time monitoring of electrical signal changes.

[0148] Sub-step A1b, prepare a nitrogen dioxide sensor

[0149] Use reduced graphene, reduced graphene / zinc oxide, carbon nanotubes, titanium dioxide nanotubes, palladium-sensitized molybdenum trioxide nanoribbons, etc. as nitrogen dioxide sensitive materials. Add nylon braided fiber as a carrier during polymerization or compounding, or coat the sensitive material to make a slurry on the fiber surface. After drying, nitrogen dioxide-sensitive fiber is formed.

[0150] Arrange multiple bundles of nitrogen dioxide sensitive fibers, make electrodes at both ends to connect wires, and connect to the information processing unit for subsequent real-time monitoring of electrical signal changes.

[0151] Sub-step A1c, prepare a sulfur dioxide sensor

[0152] Use chemically modified graphene oxide, reduced graphene oxide@titanium oxide nanocomposite material, doped poly(phenylene) (PPP) nanoparticles / zeolite composite material, etc. as sulfur dioxide sensitive materials. Add nylon braided fiber as a carrier during polymerization or compounding, or make a slurry of the sensitive material and coat it on the fiber surface. After drying, sulfur dioxide-sensitive fiber is formed.

[0153] Arrange multiple bundles of sulfur dioxide sensitive fibers, make electrodes at both ends to connect wires, and connect to the information processing unit for subsequent real-time monitoring of electrical signal changes.

[0154] Sub-step A1d, prepare a carbon monoxide sensor

[0155] Utilize WO 3- Materials such as graphene nanocomposites, Cu-doped octahedral cryptomelane molecular sieve (Cu-OMS-2) nanofibers, polypyrrole titanium dioxide nanocomposites, polypyrrole graphene oxide composites, and gold nanoparticle-doped polyaniline are used as carbon monoxide gas-sensitive materials. During polymerization or compounding, nylon braided fibers are added as carriers, or the sensitive materials are made into slurries and coated on the fiber surface. After drying, carbon monoxide-sensitive fibers are formed.

[0156] Arrange multiple bundles of carbon monoxide-sensitive fibers, make electrodes at both ends to connect wires, and connect them to the information processing unit for subsequent real-time monitoring of changes in electrical signals.

[0157] Thus, the steps for preparing the gas sensor are completed.

[0158] Sub-step A2, preparing a chemical warfare agent detection strip

[0159] Using dithiodibenzoquinone monomer (RM1a), o-phenylenediamine-ronin (PY-OPD), bromocresol green (BCG), etc. as detection materials and chloroform as a solvent, an impregnation solution was prepared. Nylon braided fibers were used as carriers, and after short-term impregnation and drying, a liquid chemical warfare agent detection strip was prepared.

[0160] Among them, the flexible chemical warfare agent detection strip does not need to be connected to a circuit system and directly judges whether there is a chemical warfare agent in the environment according to the color change.

[0161] Sub-step A3, preparing a fiber-based stress sensor

[0162] Immerse nylon braided fibers in a graphene oxide (GO) suspension in a hydrophobic container, heat, and GO is electrostatically deposited on the nylon braided fibers. After complete drying, immerse the fibers in a reducing agent solution, wash and dry. Or use materials such as MXene / multi-walled carbon nanotubes, cross-linked chitosan quaternary ammonium salt, and liquid metal (CHACC-LM) composite hydrogel to attach to the fiber surface. Stress-sensitive fibers are formed.

[0163] Make electrodes at both ends of multiple bundles of stress-sensing fibers, and connect them to the information processing unit through silver conductive fibers for subsequent real-time monitoring of electrical signals.

[0164] Sub-step A4, preparing a fiber-based temperature sensor

[0165] Using materials such as carbon nanotubes, multi-walled carbon nanotubes, poly(3,4-ethylenedioxythiophene) / polystyrene sulfonate (PEDOT:PSS), PEDOT:PSS / silver nanowires, etc. as temperature-sensing materials, add nylon braided fibers as carriers to the aqueous solutions of the above materials, or coat the sensitive materials on the fiber surface. After drying, temperature-sensitive fibers are formed.

[0166] Electrodes are made at both ends of multiple bundles of temperature-sensitive fibers and connected to the information processing unit through silver conductive fibers for subsequent real-time monitoring of electrical signal changes.

[0167] Sub-step A5: Preparation of fiber-based humidity sensors

[0168] Materials such as MXene, gold nanoparticles / graphene oxide / thiolated silica sol-gel, Fe 3+ ion-coordinated polyacrylic acid ion gel are used as humidity sensing materials. Nylon braided fibers are added as carriers during polymerization or compounding, or the sensitive materials are coated on the fiber surface. After drying, humidity-sensitive fibers are formed.

[0169] Electrodes are made at both ends of multiple bundles of humidity-sensitive fibers and connected to the information processing unit through silver conductive fibers for subsequent real-time monitoring of electrical signal changes.

[0170] Sub-step A6: Preparation of fiber-based thermoelectric generator devices

[0171] Using hydrogel as the matrix, bismuth telluride-based alloy thermoelectric materials as fillers and a small amount of additives, a composite slurry is prepared. Flexible thermoelectric fibers are prepared by an extrusion and solidification method. Through appropriate arrangement and weaving, they are made into π-shaped thermoelectric units, and multiple groups of units are connected together to form a flexible thermoelectric generator device. P-type and N-type thermoelectric fibers are respectively prepared from the corresponding P-type and N-type thermoelectric powders. N-type Bi 2 Te 2.73 Se 0.3 and P-type Bi 0.5 Sb 1.5 Te 3 powders. The positive and negative electrodes of the device are respectively connected to the information processing unit through silver conductive fibers to ensure stable power supply. Of course, the thermoelectric powders can be replaced by other materials with better thermoelectric properties such as higher electrical conductivity, lower thermal conductivity, and higher thermoelectric figure of merit.

[0172] Sub-step A7: The first component of the information processing unit

[0173] The first component is prepared by traditional welding and connected to the fiber-based gas sensor and the flexible thermoelectric generator device. It is used for continuous collection of sensor detection values, and the data is transmitted to the mobile phone software through the Bluetooth module in the component to monitor the surrounding environment in real time for warning purposes.

[0174] So far, the manufacturing method of the fiber-based environmental monitoring system in the embodiment of the present invention has been introduced.

[0175] According to the third aspect of the present invention, there is also provided a wearable article, which includes: a wearable article body, made by cutting and sewing fabrics; and the fiber-based environmental monitoring system as described above integrated in the fabric, wherein the fiber-based gas sensor and the fiber-based stress sensor are disposed on the wearable article body.

[0176] Thus, the description of the wearable article in the embodiments of the present invention is completed.

[0177] Thus far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0178] In summary, by introducing the fiber-based stress sensor, the present invention can avoid damage to the gas sensor caused by inadvertent movements of the human body. At the same time, in combination with the temperature and humidity sensors, the gas data can be corrected to improve the accuracy of the data. In addition, by providing multiple fiber-based gas sensors and introducing flexible circuit boards and guiding wires, the types of data obtained by the fiber-based environmental monitoring system are further enriched, the comfort of users when integrated into clothing is improved, and the acceptance degree of the market is increased.

[0179] It should be noted that for some implementation manners, if they are not the key content of the present invention and are well-known to those of ordinary skill in the art, they are not described in detail in the drawings or the specification. In this case, reference may be made to the relevant prior art for understanding.

[0180] Furthermore, the purpose of providing the above embodiments is only to enable the present invention to meet legal requirements, and the present invention can be implemented in many different forms and should not be construed as limited to the embodiments described herein. In addition, the definitions of the above elements and methods are not limited to the specific structures, shapes or manners mentioned in the embodiments, and those of ordinary skill in the art can make simple changes or substitutions thereto.

[0181] And the shapes and sizes of the components in the figures do not reflect the true sizes and proportions, but only illustrate the content of the embodiments of the present invention. In addition, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claims.

[0182] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0183] Unless otherwise expressly indicated to the contrary, the numerical parameters in the specification and claims of the present invention may be approximate values and can be changed according to the content of the present invention. Specifically, all the numbers used in the specification and claims to represent the contents of components, reaction conditions, etc. should be understood to be modified by the term "about" in all cases, and the meaning expressed is that it includes a change of ±10% in some embodiments, a change of ±5% in some embodiments, a change of ±1% in some embodiments, and a change of ±0.5% in some embodiments for a specific quantity.

[0184] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0185] The ordinal numbers such as "first", "second", "third", "primary", "secondary", as well as Arabic numerals, letters, etc. used in the specification and claims to modify the corresponding elements or steps are only intended to clearly distinguish an element (or step) with a certain name from another element (or step) with the same name, and do not mean that the element (or step) has any ordinal number, nor does it represent the order of one element (or step) and another element (or step).

[0186] The various embodiments of the present invention can be used in combination with each other or in combination with other embodiments based on considerations of design and reliability, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0187] The specific embodiments described above have detailed the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fiber-based environmental monitoring system, characterized in that, it includes: A fiber-based gas sensor group, including at least one fiber-based gas sensor, and the fiber-based gas sensor is used to sense the gas information of the environment where it is located; A fiber-based stress sensor, used to sense the stress information of the environment where the fiber-based gas sensor is located; An information processing unit, connected to the fiber-based stress sensor, and used to take at least one of the following actions when the stress in the environment where the fiber-based gas sensor is located exceeds a preset stress threshold: not using the current gas information, prompting the user to relieve the stress of the environment, and sending an alarm to the user; Among them, the fiber-based gas sensor is one or more of the following sensors: ammonia sensor, nitrogen dioxide sensor, sulfur dioxide sensor, carbon monoxide sensor; the fiber-based gas sensor includes n bundles of gas-sensitive fibers; each bundle of gas-sensitive fibers includes: a fiber substrate, and a corresponding gas-sensitive layer formed on the fiber substrate, n≥2; Among them, a first stress threshold P1 and a second stress threshold P2 are preset in the information processing unit, P1<P2; the information processing unit is used for: when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P1, not using the current gas information and / or prompting the user to relieve the stress of the environment; when the stress in the environment where the fiber-based gas sensor is located exceeds the preset stress threshold P2, sending an alarm about the risk of damage to the fiber-based gas sensor to the user.

2. The fiber-based environmental monitoring system according to claim 1, characterized in that, it further includes: A fiber-based humidity sensor, used to sense the humidity information of the environment where the fiber-based gas sensor is located; An information processing unit, connected to the fiber-based gas sensor and the fiber-based humidity sensor, and used to correct the gas information by using the humidity information and the stress information.

3. The fiber-based environmental monitoring system according to claim 1, characterized in that: The fiber-based gas sensor group includes: an ammonia sensor, and the ammonia sensor includes at least 1 ammonia-sensitive fiber; the ammonia-sensitive fiber includes: a fiber substrate, and an ammonia-sensitive layer of a polyaniline-gold-tin dioxide material formed on the fiber substrate.

4. The fiber-based environmental monitoring system according to claim 3, characterized in that, the fiber-based gas sensor and the fiber-based stress sensor are arranged on the body side, and the information processing unit includes: A first component, arranged on the body side, includes: a flexible circuit board; a data acquisition module, arranged on the flexible circuit board, connected to the fiber-based gas sensor and the fiber-based stress sensor, and used to perform data acquisition on the gas information and the stress information; a wireless transmission module, arranged on the flexible circuit board, connected to the data acquisition module, and used to transmit the collected gas data and stress data outward. The second component is disposed on the terminal side and includes: a wireless receiving module connected to the Bluetooth transmitting module via Bluetooth for receiving the gas data and stress data; an action module connected to the wireless receiving module for performing corresponding actions when the stress in the environment where the fiber-based gas sensor is located exceeds a preset stress threshold.

5. The fiber-based environmental monitoring system according to claim 4, wherein: the wireless transmitting module and the wireless receiving module are a Bluetooth transmitting module and a Bluetooth receiving module respectively; on the body side, the fiber-based gas sensor and the fiber-based humidity sensor are connected to the data acquisition module through two-end electrodes and silver conductive fibers.

6. The fiber-based environmental monitoring system according to claim 5, wherein: the fiber-based environmental monitoring system further includes: a flexible thermoelectric power generation device disposed on the body side, composed of a plurality of groups of π-shaped thermoelectric units connected, and the π-shaped thermoelectric unit is arranged by p-type thermoelectric fibers and n-type thermoelectric fibers for powering the data acquisition module and the Bluetooth transmitting module; and / or the fiber-based environmental monitoring system further includes: a chemical warfare agent sensor, which includes: k chemical warfare agent detection bands for sensing chemical warfare agent information in the environment where it is located, and each chemical warfare agent detection band includes: a fiber substrate, and a chemical warfare agent sensitive layer formed on the fiber substrate, k≥2; and / or the fiber-based environmental monitoring system further includes: a fiber-based temperature sensor, which includes: s bundles of temperature-sensitive fibers; each bundle of temperature-sensitive fibers includes: a fiber substrate; and a temperature-sensitive layer formed on the fiber substrate, s≥2; and / or the fiber-based humidity sensor includes: m bundles of humidity-sensitive fibers; each bundle of humidity-sensitive fibers includes: a fiber substrate; and a humidity-sensitive layer formed on the fiber substrate, m≥2; and / or the fiber-based stress sensor includes: r bundles of stress-sensitive fibers; each bundle of stress-sensitive fibers includes: a fiber substrate; and a stress-sensitive layer formed on the fiber substrate, r≥2.

7. The fiber-based environmental monitoring system according to claim 6, wherein: the gas information includes: the component information and / or content information of the gas; and / or the fiber substrate is a nylon braided fiber; and / or the chemical warfare agent sensitive layer is formed by one or more of the following materials: dithiodiphenone monomer, o-phenylenediamine-ronine, bromocresol green; and / or In the flexible thermoelectric power generation device, the material of the P-type thermoelectric fiber is: Bi 0.5 Sb 1.5 Te 3 ; the material of the N-type thermoelectric fiber is Bi 2 Te 2.73 Se 0.3 ; and / or For the fiber-based humidity sensor, the humidity-sensitive layer is formed of one of the following materials: MXene, gold nanoparticles / graphene oxide / thiolated silica sol-gel, Fe 3+ ion-coordinated polyacrylic acid ion gel; and / or for the fiber-based stress sensor, the stress-sensitive layer is formed by one of the following materials: graphene oxide; MXene / multi-walled carbon nanotubes; an attachment dry product of cross-linked chitosan quaternary ammonium salt and liquid metal composite hydrogel; and / or for the fiber-based temperature sensor, the temperature-sensitive layer is formed by one of the following materials: carbon nanotubes, multi-walled carbon nanotubes, poly(3,4-ethylenedioxythiophene) / polystyrene sulfonate (PEDOT:PSS), an attachment dry product of PEDOT:PSS / silver nanowires; and / or For the ammonia sensor, the ammonia-sensitive layer is formed of one of the following materials: polyaniline, a composite material of polyaniline-nanogold-tin dioxide, a composite material of nickel oxide and copper oxide, a composite material of polypyrrole-titanium dioxide-gold, a nanocomposite material of polyaniline multi-walled carbon nanotubes; and / or For the nitrogen dioxide sensor, the nitrogen dioxide-sensitive layer is formed of one of the following materials: reduced graphene, a composite material of reduced graphene and zinc oxide, carbon nanotubes, titanium dioxide nanotubes, palladium-sensitized molybdenum trioxide nanoribbons; and / or For the sulfur dioxide sensor, the sulfur dioxide-sensitive layer is formed of one of the following materials: chemically modified graphene oxide, a composite material of reduced graphene oxide-coated nano titanium oxide, a composite material of doped poly(phenylene) nanoparticles and zeolite composite; and / or For the carbon monoxide sensor, the carbon monoxide sensitive layer is formed of one of the following materials: WO 3 - a nanocomposite of graphene, a Cu-doped cryptomelane octahedral molecular sieve nanofiber, a nanocomposite of polypyrrole and titanium dioxide, a composite of polypyrrole and graphene oxide, a polyaniline doped with nano gold; and / or For the fiber-based gas sensor, its dimensions satisfy: length greater than 30 mm, width greater than 2 mm, thickness less than 1 mm; for the fiber-based humidity sensor, its dimensions satisfy: length greater than 30 mm, width greater than 2 mm, thickness less than 1 mm; for the fiber-based stress sensor, its dimensions satisfy: length greater than 30 mm, width greater than 30 mm, thickness less than 1 mm; for the fiber-based temperature sensor, its dimensions satisfy: length greater than 30 mm, width greater than 30 mm, thickness less than 1 mm; for the flexible thermoelectric generator device, its dimensions satisfy length and width greater than 300 mm, thickness less than 5 mm: for the first component of the information processing unit, its length is less than 50 mm, width is less than 20 mm, thickness is less than 10 mm; and / or The length and width of the fiber-based stress sensor are both greater than the length and width of the fiber-based gas sensor, and the fiber-based gas sensor is disposed on the fiber-based stress sensor; and / or The fiber-based environmental monitoring system further includes: a fiber-based temperature sensor; the fiber-based gas sensor group includes: a carbon monoxide sensor; the action module is further configured to: evaluate the explosion risk degree according to the environmental temperature detected by the fiber-based temperature sensor and the carbon monoxide concentration detected by the carbon monoxide sensor, and issue an alarm to the user when the explosion risk is greater than a preset threshold value.

8. A manufacturing method of the fiber-based environmental monitoring system according to claim 6, characterized in that it includes obtaining a fiber-based gas sensor, a fiber-based humidity sensor, a fiber-based temperature sensor, a fiber-based stress sensor, a chemical warfare agent detection strip, a flexible thermoelectric generator device, and a first component of an information processing unit; integrating the fiber-based gas sensor, the fiber-based humidity sensor, the fiber-based temperature sensor, the fiber-based stress sensor, the chemical warfare agent detection strip, the flexible thermoelectric generator device, and the first component of the information processing unit on the fabric of the wearable article; performing the following electrical connections through the silver conductive fiber in the fabric interlayer of the wearable article: the data acquisition module is connected to the fiber-based gas sensor, the fiber-based humidity sensor, the fiber-based temperature sensor, and the fiber-based stress sensor; the flexible thermoelectric generator device is connected to the data acquisition module and the wireless transmission module.

9. The manufacturing method according to claim 8, wherein: the steps of manufacturing the fiber-based gas sensor include: attaching the corresponding gas-sensitive material to the fiber substrate by means of impregnation, coating, or grafting, and then drying; and / or The steps of fabricating a flexible thermoelectric generator device include: preparing p-type thermoelectric fibers and n-type thermoelectric fibers; arranging the p-type thermoelectric fibers and n-type thermoelectric fibers to form a π-shaped thermoelectric unit, and connecting multiple groups of π-shaped thermoelectric units together to form a flexible thermoelectric generator device. Among them, the p-type thermoelectric fiber and the n-type thermoelectric fiber are respectively made by mixing the corresponding alloy powder and the matrix as a slurry and extruding and curing to form a shape. Among them, the p-type alloy powder is: Bi 0.5 Sb 1.5 Te 3 powder, and the n-type alloy powder is: Bi 2 Te 2.73 Se 0.3 , and the matrix is a hydrogel.

10. A wearable article, wherein, it includes: a wearable article body, which is cut and sewn from fabric; and a fiber-based environmental monitoring system as described in claim 6 integrated in the fabric; wherein, the fiber-based gas sensor, fiber-based humidity sensor, fiber-based temperature sensor, and fiber-based stress sensor are arranged on the wearable article body, and the silver conductive fiber is arranged in the fabric interlayer of the wearable article body.

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