Airbag sensing structure, sensor, wearing sensing device and airbag type friction nanogenerator

Abstract

The application relates to the technical field of energy sources, and discloses an air bag sensing structure, a sensor, a wearing sensing device and an air bag type friction nanometer generator. The air bag sensing structure comprises a gas storage chamber and a gas chamber which are connected with each other through an air flow channel and a sensing assembly arranged in the gas chamber. The sensing assembly comprises a first electrode and a second electrode provided with a dielectric material coating on the opposite surface of the first electrode. Soft magnetic iron which is mutually attractive is arranged on the upper and lower sides of the gas chamber, and the soft magnetic iron is arranged so that the first electrode and the second electrode are mutually attached. When the volume of the gas storage chamber is reduced due to deformation, at least part of the gas in the gas storage chamber is injected into the gas chamber through the air flow channel, so that the first electrode and the second electrode are separated to form a sensing current. The application solves the problem that the conventional friction nanometer generator cannot timely and effectively feedback information underwater due to the limitation of its own power generation, so that the energy underwater cannot be continuously and effectively collected, and the sensing data cannot be collected and monitored.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy, in particular to an air bag sensing structure, a sensor, a wearing sensing device and an air bag type friction nanogenerator. BACKGROUND

[0002] The friction nanogenerator is used for micro energy collection, mechanical sensing and underwater motion signal monitoring. Traditional friction nanogenerator is mostly used for energy collection or sensing on water surface in dry environment. Due to the difficulty in packaging and data collection, underwater application and development based on the friction nanogenerator have not been fully developed.

[0003] At present, the friction nanogenerator for blue energy is mostly used on water surface. Due to the limitation of conventional friction nanogenerator in power generation, combined with the shielding effect of water in underwater operation, it is unable to effectively feedback the rescue and operation signal in time under water, and it is also unable to continuously and effectively monitor the energy situation under water and collect data. At the same time, the conventional friction nanogenerator is made of hard material, which is not easy to operate normally when applied to underwater biological monitoring due to poor adhesion, and even affects the service life or is lost. SUMMARY

[0004] The present application aims to overcome the technical problems in the prior art that the conventional friction nanogenerator is limited by the packaging level and the shielding effect of water on its power generation, and is unable to feedback information in time under water, resulting in the inability to continuously and effectively collect data and monitor the energy situation under water.

[0005] In order to achieve the above-mentioned purpose, the present application provides an air bag sensing structure.

[0006] The air bag sensing structure comprises a gas storage chamber and a gas chamber which are connected to each other through an air flow channel, and a sensing assembly arranged in the gas chamber, the sensing assembly comprises a first electrode and a second electrode provided with a dielectric material coating on the opposite surface of the first electrode, and the upper and lower sides of the gas chamber are provided with soft magnetic iron which are attracted to each other, and the soft magnetic iron is arranged so that the first electrode and the second electrode are attached to each other; when the volume of the gas storage chamber is reduced due to deformation, at least part of the gas in the gas storage chamber is injected into the gas chamber through the air flow channel, so that the first electrode and the second electrode are separated to generate induced current.

[0007] The air bag sensing structure provided by the application is characterized in that a gas storage chamber and a gas chamber are arranged, a first electrode and a second electrode with a dielectric material coating on the opposite side of the first electrode are arranged in the gas chamber, and soft magnetic iron that is attracted to each other is arranged on the upper and lower sides of the gas chamber, so that the first electrode and the second electrode are attached to each other, when the gas storage chamber is deformed and the volume is reduced, at least part of the gas in the gas storage chamber is injected into the gas chamber through the air flow channel, so that the first electrode and the second electrode are separated to form electric energy, and the air bag sensing structure can continuously generate electric energy under the mechanical force of the external environment, the electric signal can be used for sensing, and the electric energy can also be stored through the energy management circuit or output to the outside to drive other low-power electrical appliances. Thus, the technical problem that the conventional friction nanogenerator is limited by the shielding effect of water and cannot perform timely and effective information feedback under water, so that the energy under water cannot be continuously and effectively collected and data collected and monitored is solved.

[0008] Preferably, the air flow channel comprises a first channel and a second channel that are opposite in the attachment direction of the first electrode and the second electrode, and the first channel and the second channel are formed in an asymmetric structure.

[0009] Preferably, the channel width of the first channel connected to one side of the gas chamber is smaller than the channel width of the first channel connected to one side of the gas storage chamber, and the second channel has a constant channel width in the direction from the gas storage chamber to the gas chamber.

[0010] Preferably, the air bag sensing structure comprises two gas chambers that are symmetrically arranged on the two sides of the gas storage chamber.

[0011] Preferably, the gas storage chamber protrudes relative to the two gas chambers to form a stepped shape of the outer contour of the air bag sensing structure.

[0012] Preferably, the air bag sensing structure comprises at least one of the following modes:

[0013] Mode one, a limiting groove for fixing the first electrode and the second electrode is arranged in the gas chamber, and the limiting groove is communicated with the air flow channel, so that when the gas is injected into the gas chamber, the side of the first electrode and the second electrode that is opposite to each other is acted on;

[0014] Mode two, the soft magnetic iron is a soft magnetic strip;

[0015] Mode three, the air bag shell of the air bag sensing structure is made of platinum catalytic gel.

[0016] The second aspect of the application provides an air bag sensor.

[0017] The air bag sensor comprises a signal acquisition and processing module, a power module and the air bag sensing structure according to any one of the above, and the air bag sensing structure is connected with the signal acquisition and processing module and the power module through a circuit to form a motion information sensing system.

[0018] The third aspect of the present application provides an air bag wearing sensing device.

[0019] The air bag wearing sensing device comprises a fixing sleeve made of silica gel and the air bag sensing structure according to any one of the above, and the air bag sensing structure is arranged on the fixing sleeve.

[0020] The fourth aspect of the present application provides an air bag type friction nano generator.

[0021] The air bag type friction nano generator comprises an energy management circuit, the air bag sensing structure according to any one of the above or the air bag sensor, and the air bag sensing structure can be applied to low-power electrical appliances through the energy management circuit by collecting mechanical energy converted into electrical energy.

[0022] Preferably, the air bag type friction nano generator comprises a voltage converter contained in the energy management circuit. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the air bag sensing structure in the embodiment provided by the present application;

[0024] Figure 2 is a structural schematic diagram of the internal structure of Figure 1 ;

[0025] Figure 3 is a structural schematic diagram of the use state of Figure 1 ;

[0026] REFERENCE SIGNS

[0027] 1, gas storage chamber; 2, air chamber; 3, sensing assembly; 301, first electrode; 302, second electrode; 4, soft magnetic iron; 5, air flow channel; 501, first channel; 502, second channel; 6, fixing sleeve. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and above-described drawings are intended to distinguish similar objects and are not necessarily used to describe a particular sequence or chronology. It will be understood that the data thus used can be interchanged, where appropriate, to carry out embodiments of the present application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or apparatus that includes a list of steps or units need not be limited to those steps or units explicitly listed, but can include other steps or units not expressly listed or inherent to such processes, methods, products, or apparatus.

[0030] In the present application, the terms "upper", "lower", "inner", "outer", "middle", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a particular orientation, or to be constructed and operated in a particular orientation.

[0031] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0032] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0034] As shown in Figures 1 to 3 The present application provides an air bag sensing structure, which comprises a gas storage chamber 1 and a gas chamber 2 that are in communication with each other through an air flow passage 5, and a sensing assembly 3 disposed in the gas chamber 2, the sensing assembly 3 comprising a first electrode 301 and a second electrode 302, the upper and lower sides of the gas chamber 2 being provided with soft magnetic iron 4 that attract each other, the soft magnetic iron 4 being arranged so that the first electrode 301 and the second electrode 302 adhere to each other, when the volume of the gas storage chamber 1 decreases due to deformation, at least part of the gas in the gas storage chamber 1 is injected into the gas chamber 2 through the air flow passage 5, so that the first electrode 301 and the second electrode 302 are separated to generate an induced current.

[0035] The air bag sensing structure provided by the application comprises a gas storage chamber and a gas chamber, and a first electrode and a second electrode with a dielectric material coating on the opposite surface of the first electrode are arranged in the gas chamber, and soft magnetic iron that is attracted to each other is arranged on the upper and lower sides of the gas chamber, so that the first electrode and the second electrode are attached to each other, when the gas storage chamber is deformed and the volume is reduced, at least part of the gas in the gas storage chamber is injected into the gas chamber through the gas flow channel, so that the first electrode and the second electrode are separated to form an induced current, the air bag sensing structure can continuously generate an induced current under the mechanical force of the external environment, and the voltage signal can be transmitted outward for sensing, and the energy can also be stored through the energy management circuit or the electric energy can be outputted outward through the voltage conversion. Thus, the technical problems that the conventional friction nanogenerator cannot perform timely and effective information feedback under water due to the limitation that the generated signal is easily disturbed, and the energy under water cannot be continuously and effectively monitored and the data cannot be collected are solved.

[0036] In the optional embodiment of the application, the gas flow channel 5 comprises a first channel 501 and a second channel 502 arranged along the attachment direction of the first electrode 301 and the second electrode 302, and the first channel 501 and the second channel 502 form an asymmetric structure. In this way, when the gas is pressed to move from the gas storage chamber 1 to the gas chamber 2, the first channel 501 and the second channel 502 will not be too tightly closed to cause poor gas flow, or when the gas flows from the gas chamber 2 to the gas storage chamber 1, the first channel 501 and the second channel 502 will not be too tightly closed to cause poor gas flow, that is, the asymmetric arrangement of the first channel 501 and the second channel 502 ensures that the gas flow channel 5 is always in an open state when the air bag is not stressed or stressed, and will not be closed due to the flexible material.

[0037] In the further optional embodiment of the application, the channel width of the first channel 501 connected to one side of the gas chamber 2 is smaller than the channel width of the first channel 501 connected to one side of the gas storage chamber 1, and the second channel 502 has a constant channel width along the direction from the gas storage chamber 1 to the gas chamber 2. The gas flow channel 5 formed by the above structure is in a constricted shape along the direction from the gas storage chamber 1 to the gas chamber 2, which is beneficial to accelerate the flow of the gas flowing from the gas storage chamber 1 to the gas chamber 2 in the gas chamber 2 to impact the sensing assembly 3 in the gas chamber 2, and is more beneficial to the separation of the first electrode 301 and the second electrode 302 under the action of the gas to form an induced current.

[0038] In an alternative embodiment of the present application, the air bag sensing structure comprises two air chambers 2, which are symmetrically arranged on both sides of the gas storage chamber 1. The symmetric arrangement of the two air chambers 2 can simultaneously detect the energy fluctuation of different positions of the external environment by generating induced current. In order to ensure that the gas storage chamber 1 has sufficient gas storage capacity and a larger force area, in a further alternative embodiment of the present application, the gas storage chamber 1 is protruded relative to the two air chambers 2 so that the outer contour of the air bag sensor is formed in a stepped shape.

[0039] In an alternative embodiment of the present application, a limiting groove for defining the first electrode 301 and the second electrode 302 is provided in the air chamber 2, which is in communication with the gas flow channel 5, so that when gas is injected into the air chamber 2, it acts on the opposite side of the first electrode 301 and the second electrode 302. In a further alternative embodiment of the present application, a plurality of first electrodes 301 and a plurality of second electrodes 302 are included, which are arranged at intervals. In an alternative embodiment of the present application, two first electrodes 301 and one second electrode 302 are included, and the second electrode 302 is arranged between the two first electrodes 301. The first electrode 301 and the second electrode 302 are arranged in layers in the limiting groove, and the size of the limiting groove is matched with the sensing assembly 3. In order to ensure the tightness and effectiveness of the connection of the first electrode 301 and the second electrode 302, preferably, the soft magnetic iron 4 is a soft magnetic strip, and the long side of the soft magnetic strip is arranged in the connection direction of the gas storage chamber 1 and the air chamber 2. The selection of the dielectric material coating on the first electrode 301 and the second electrode 302 and the second electrode 302 is wide, and the output performance can be greatly improved by means of micro-nano machining, magnetron sputtering, polarization, etc. on the electrode surface.

[0040] In an alternative embodiment of the present application, the airbag shell of the airbag sensor is made of platinum catalytic gel. Preferably, Ecoflex-0030 platinum catalytic gel with high elasticity can be used. Firstly, the selection of the above material makes the airbag sensor have good mechanical sensitivity, which is suitable for underwater wireless motion detection. Secondly, the above material has excellent weather resistance and stable chemical / physical properties, which is suitable for long-term underwater work and is not easy to age. The built-in structure is not easy to damage, easy to recycle, and conducive to environmental protection. Because the friction coefficient of Ecoflex-0030 platinum catalytic gel is large, a large resistance needs to be overcome when the airflow channel 5 is closed and the card is punched, which affects the flow of gas in the airbag. The design of the asymmetric airflow channel 5 formed by the first channel 501 and the second channel 502 greatly reduces the resistance of gas flowing in the three gas storage chambers. At the same time, the whole airbag sensing structure is designed to be flexible, which is easy to deform when subjected to external force, so that the gas shuttles back and forth between the gas storage chamber 1 and the two gas chambers 2, thereby controlling the operation of the friction nanogenerator and converting mechanical energy into electrical energy. Preferably, the size of the gas storage chamber 1 is 4cm*3cm*1.5cm, and the size of the gas chamber 2 is 3cm*3cm*0.5cm.

[0041] The present application provides an airbag sensor, which comprises a signal acquisition and processing module, a power module and any one of the airbag sensing structures described above, and the airbag sensing structure is connected to the signal acquisition and processing module and the power module through a circuit. The sensing component 3 of the airbag sensing structure receives the sensing electric signal generated by the external environmental energy, which can be transmitted to the outside through the Bluetooth module. The airbag sensor can be used for real-time wireless monitoring of the activities of marine organisms. In particular, the sensing based on sound waves near the water is easily disturbed by sea waves, industrial noise, etc. The airbag sensor provided by the present application is suitable for replacing sound waves for real-time wireless monitoring of biological motion near the water.

[0042] The present application provides an airbag wearing sensing device, which comprises a fixing sleeve 6 made of silica gel and any one of the airbag sensing structures described above, and the airbag sensing structure is arranged on the fixing sleeve 6. The fixing sleeve 6 can be structurally set according to specific use scenarios, such as adapting to the fluid lines or fish fins and tail of fish, or adjusting to the use needs of divers. In other embodiments of the present application, multiple airbag sensing structures can be arranged on one fixing sleeve 6.

[0043] In use, the air bag wearing sensing device is charged by friction and contact electrification, and the output electric energy of the air bag sensing assembly can be used to drive various low-power consumption devices such as LEDs during the bending deformation of the air bag sensing assembly due to movement. The air bag sensing assembly can be attached to the human body or fish body through the fixing sleeve 6, and when the bending angle changes between 0° and ±180°, the output electric signal of the sensing assembly of the air bag sensing assembly will increase in proportion to the angle, and the specific movement information under water can be obtained by comprehensively analyzing the amplitude, frequency, waveform and other information of the electric signal in the blind field. It can be used for underwater energy collection, fish movement signal monitoring, and biological torpedo implementation cases.

[0044] The application provides an air bag type friction nanogenerator, which comprises an energy management circuit, the air bag sensing structure or the air bag sensor.

[0045] In a further optional embodiment of the application, the air bag type friction nanogenerator comprises an electric energy converter contained in the energy management circuit, which can convert the electric energy generated by the friction nanogenerator into voltage electric energy that can match other electric devices, thereby providing a guarantee for electric energy for underwater operations and facilitating continuous and effective monitoring of underwater operations.

[0046] Traditional triboelectric nanogenerators are mostly used for energy collection or sensing on the water surface in dry environments, and underwater application and development based on triboelectric nanogenerators have not been fully developed due to difficulties in packaging and data acquisition. The friction nanogenerator with an air bag structure disclosed in the application operates according to the principle of triboelectric charging and contact electrification, and the operation of the friction nanogenerator is controlled by using the gas in the flexible sealed air bag structure, and the design and preparation of the sealed air bag structure. The gas atmosphere can prevent the friction nanogenerator from being affected by the shielding effect of water, and the flexible magnetic strip can resist the pressure of water, thereby greatly improving the durability and stability of the output of the device; the full flexibility design makes the device have excellent mechanical sensitivity, and is suitable for underwater motion sensing and underwater monitoring in combination with underwater robots, and can be used for underwater energy collection / sensing. The full flexibility design and the innovation of the air bag structure can effectively reduce the interference of the external environment when the friction nanogenerator works underwater, solve the shielding effect of water, and greatly improve the durability and stability of the output of the device.

[0047] The above merely provides the preferred and optional embodiments of the present application, but should not be used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall fall into the scope of protection of the present application.

Claims

1. An airbag sensing structure, characterized in that, The airbag sensing structure adopts a fully flexible design and has a sealed airbag shell. Inside the airbag shell are a storage chamber (1) and an air chamber (2), and an airflow channel (5) connecting the storage chamber (1) and the air chamber (2). A sensing component (3) is disposed in the air chamber (2). The sensing component (3) includes a first electrode (301) and a second electrode (302) with a dielectric material coating on its opposite surface to the first electrode (301). Soft magnets (4) are arranged on the upper and lower sides of the air chamber (2) to attract each other. The soft magnets (4) are configured to make the first electrode (301) and the second electrode (302) adhere to each other. When the storage chamber (1) deforms and its volume decreases, at least a portion of the gas in the storage chamber (1) is injected into the air chamber (2) through the airflow channel (5), causing the first electrode (301) and the second electrode (302) to separate and form an induced current. The airflow channel (5) includes a first channel (501) and a second channel (502) facing each other along the bonding direction of the first electrode (301) and the second electrode (302), and the first channel (501) and the second channel (502) are formed in an asymmetrical structure.

2. The airbag sensing structure according to claim 1, characterized in that, The width of the first channel (501) connected to the side of the gas chamber (2) is smaller than the width of the first channel (501) connected to the side of the gas storage chamber (1); the second channel (502) has a constant width along the direction from the gas storage chamber (1) to the gas chamber (2).

3. The airbag sensing structure according to claim 1, characterized in that, The airbag sensing structure includes two air chambers (2), which are symmetrically arranged on both sides of the air storage chamber (1).

4. The airbag sensing structure according to claim 3, characterized in that, The gas storage chamber (1) protrudes relative to the two gas chambers (2) so that the outer contour of the airbag sensing structure is stepped.

5. The airbag sensing structure according to any one of claims 1 to 4, characterized in that, The airbag sensing structure includes at least one of the following methods: In one method, the gas chamber (2) is provided with a limiting groove for fixing the first electrode (301) and the second electrode (302). The limiting groove is connected to the airflow channel (5) so that when the gas is injected into the gas chamber (2), it acts on the opposite side of the first electrode (301) and the second electrode (302). Method 2: The soft magnet (4) is a soft magnetic strip; Method 3: The airbag shell of the airbag sensing structure is made of platinum catalytic gel.

6. An airbag sensor, characterized in that, The airbag sensor includes a signal acquisition and processing module, a power supply module, and an airbag sensing structure according to any one of claims 1 to 5. The airbag sensing structure is connected to the signal acquisition and processing module and the power supply module through a circuit to form a motion information sensing system.

7. An airbag wearing sensing device, characterized in that, The airbag wearing sensing device includes a silicone fixing sleeve (6) and an airbag sensing structure according to any one of claims 1 to 5, wherein the airbag sensing structure is disposed on the fixing sleeve (6).

8. A pneumatic triboelectric nanogenerator, characterized in that, The triboelectric nanogenerator includes a power management circuit, an airbag sensing structure according to any one of claims 1 to 5, or an airbag sensor according to claim 6. The airbag sensing structure collects electrical energy converted from kinetic mechanical energy and applies it to low-power electrical appliances through the power management circuit.

9. The airbag-type triboelectric nanogenerator according to claim 8, characterized in that, The airbag-type triboelectric nanogenerator includes a voltage converter incorporated in the power management circuit.

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