Wearable human body flexible antenna device

Abstract

The wearable human body flexible antenna device provided by the utility model is provided with a three-layer film structure, so that the accuracy and stability of signal measurement are improved, and the wearing comfort and portability are ensured at the same time. The uppermost layer of the wearable human body flexible antenna device is an extensible film, and is provided with a flexible antenna to realize wireless communication. The middle layer is a stress control film, elastic wires are embedded in the stress control film, and bending stress is effectively controlled through the low Young modulus design of the stress control film. The lowest layer is an adhesive film which is attached to the skin, flexible sensing electrodes are arranged to collect electrocardiosignals, and the flexible sensing electrodes are connected with an antenna through elastic wires. Based on the hierarchical structure film system, the stability of the device in body movement is improved while the device is kept light, thin and comfortable, the contradiction between the stability and the comfort in the traditional design is solved, and high-stability signal transmission is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flexible antenna device, in particular to a wearable human flexible antenna device. BACKGROUND

[0002] Through the combination of multiple disciplines and engineering technologies such as material science, mechanics, optoelectronic engineering and communication engineering, a flexible wearable sensing system for human health signal collection is born. Through the systematic thin film integration of flexible sensing devices and flexible antennas and related processes, the sensing system can work on the human body surface at any time and anywhere and collect human related health signals such as body temperature, skin humidity, muscle signal, nerve signal and electrocardiogram signal, etc. thermal, optical, electrical and mechanical signals, and transmit them in real time to mobile phones and other external devices for visual synchronous monitoring and analysis, so as to achieve the purpose of monitoring the real-time health status of the human body.

[0003] On the above basis, the flexible antenna device integrated system currently has the following problems to be improved: the current flexible antenna device cannot meet the lightness, comfort and reliability and accuracy of signal measurement at the same time. The main reason is that the existing flexible antenna device cannot maintain stable performance in a complex deformation environment, and in order to solve this problem, the existing flexible antenna device must reduce the extensibility of the thin film substrate and increase the thickness, which will inevitably sacrifice the comfort and lightness of the user during wearing.

[0004] It should be noted that the information disclosed in the above background section is only for understanding the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the utility model is to overcome the defects in the above background technology, and provide a wearable human flexible antenna device.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wearable human flexible antenna device, comprising:

[0008] The extensible thin film, as the uppermost layer, is arranged with a flexible antenna for wireless communication;

[0009] The stress control thin film, as the intermediate layer, is embedded with an elastic wire, and the Young's modulus of the stress control thin film is less than that of the extensible thin film and the adhesive thin film, so as to control the bending stress and protect the elastic wire arranged thereon;

[0010] The adhesive film, as the lowermost layer, is used for adhering to human skin and is arranged with flexible sensing electrodes for collecting electrocardio signals, and the flexible sensing electrodes are connected with the flexible antenna through the elastic lead wires.

[0011] Further, the floor center of the flexible antenna is arranged with a via hole filled with conductive material, and the elastic lead wire is guided to the surface of the film system through the conductive material in the via hole to be connected with a signal reading circuit.

[0012] Further, the elastic lead wire is arranged in an S-shaped manner on the stress control film.

[0013] Further, the material of the elastic lead wire adopts conductive resin or conductive glue with elasticity.

[0014] Further, the thickness of the stress control film is 100 microns.

[0015] Further, the dielectric constant of each layer of film is 2-5.

[0016] Further, the flexible sensing electrode is connected to the surface of the adhesive film through metal copper.

[0017] Further, the flexible sensing electrode comprises a pair of electrocardio electrodes with a spacing of more than 50 mm.

[0018] Further, the flexible antenna is a reverse F circular arc antenna structure, which has a circular arc line side as a radiation arm, a first line side connected at the end of the circular arc line side and a second line side connected in the middle of the circular arc line side, the first line side of the reverse F circular arc antenna structure is connected with the circular floor of the flexible antenna, the second line side of the reverse F circular arc antenna structure is connected with a feeding port, and the circular arc line side of the reverse F circular arc antenna structure is arranged to extend along the extension direction of the arc-shaped periphery of the circular floor of the flexible antenna.

[0019] The utility model has the following beneficial effects:

[0020] The wearable human body flexible antenna device of the utility model realizes a kind of both light and comfortable wearing experience, while ensuring the accuracy and stability of signal measurement by the innovative three-layer film structure.The most upper layer extensible film is arranged with flexible antenna for wireless communication, ensuring the communication function of device, the stress control film in the middle is embedded with elastic wire, and its lower Young's modulus effectively controls bending stress.The stress control film in the middle has lower Young's modulus relative to the extensible film of upper layer and the adhesive film of lower layer, and under the premise of not sacrificing user wearing comfort and lightness, its stress control effect provides good bending performance, effectively improves the performance stability of flexible antenna device in complex deformation environment.Through this design, even in the shape change caused by body movement, the device can maintain reliable signal measurement accuracy and communication stability, thereby solving the contradiction in the prior art that film thickness has to be increased to improve stability and wearing comfort has to be sacrificed.It is also beneficial to protect elastic wire from damage, and enhances the durability and reliability of device.The adhesive film of the most lower layer is attached to human skin, and is arranged with flexible sensing electrode, for collecting electrocardiosignal, and is connected with flexible antenna through elastic wire, to realize effective signal transmission.The overall design of the three-layer film structure of the utility model not only solves the problem of unstable performance of traditional flexible antenna device in complex deformation environment, but also avoids the necessity of sacrificing comfort and lightness to improve stability.In general, the flexible antenna substrate of the multi-layer flexible film structure of the utility model provides good tensile and bending deformation capacity, so that flexible antenna device can adapt to complex strain in various wearing environments, and maintain stable performance.The whole system design is compact, small in size, high in integration, and can be mass-produced through modern manufacturing techniques such as nano material structure and additive manufacturing, to reduce cost and improve production efficiency.The utility model not only improves the wearing experience of user, but also ensures the real-time and accuracy of health monitoring data, to provide an efficient and reliable solution for the development of wearable sensing technology.

[0021] Other beneficial effects in the embodiments of the utility model will be further described in the following. ACCURACY

[0022] Fig. 1 It is the structure schematic view of wearable human body flexible antenna device of the utility model embodiment.

[0023] Fig. 2 It is the layered layout explosion drawing of wearable human body flexible antenna device of the utility model embodiment.

[0024] Fig. 3 It is the antenna structure schematic view of wearable human body flexible antenna device of the utility model embodiment. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present application and its applications.

[0026] It should be noted that when an element is referred to as being "fixed" or "attached" to another element, it can be directly on the other element or indirectly on the other element, with one or more intervening elements. When an element is referred to as being "connected" or "linked" to another element, it can be directly connected or linked to the other element or indirectly connected or linked to the other element, with one or more intervening elements. In addition, the connection can be for the purpose of fixation or for the purpose of coupling or communication.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0029] Referring to Figs. 1-2 , the wearable human body flexible antenna device provided by the embodiments of the present application comprises: a stretchable film 1 as the uppermost layer, which is arranged with a flexible antenna 5 for wireless communication; a stress control film 2 as the intermediate layer, which is embedded with an elastic wire 6, the Young's modulus of the stress control film 2 is less than that of the stretchable film 1 and an adhesive film 3, so as to control the bending stress and protect the elastic wire 6 arranged thereon; and the adhesive film 3 as the lowermost layer, which is used for adhering to the human skin and is arranged with a flexible sensing electrode 7 for collecting an electrocardio signal, the flexible sensing electrode 7 is connected to the flexible antenna 5 through the elastic wire 6 and a hole 4 on the stretchable film 1. Preferably, the stretchable film 1, the stress control film 2 and the adhesive film 3 can all adopt PDMS film. In the preferred embodiments, the elastic wire 6 is arranged in an S-shaped direction on the stress control film 2. Preferably, the thickness of the stress control film 2 is 100 microns.

[0030] The wearable human body flexible antenna device of the embodiment of the utility model designs a three-layer film structure to realize the accuracy and stability of signal measurement while keeping light, comfortable wearing experience. The most upper extensible film 1 integrates the flexible antenna 5, responsible for wireless communication function, while the stress control film 2 in the middle effectively controls the bending stress of the device in the complex deformation environment due to its lower Young's modulus, provides good bending performance, improves the performance stability, at the same time protects the embedded elastic wire 6, enhances the durability and reliability of the device. The most lower adhesive film 3 ensures the close fit with the human skin, and is provided with flexible sensing electrode 7 for collecting electrocardio signal, connected with the flexible antenna 5 through the elastic wire 6, realizes the effective transmission of signal. The structure design ingeniously solves the problem of unstable performance of the traditional flexible antenna device in the deformation environment, avoids the necessity of sacrificing comfort and lightness to improve stability, so that the device can adapt to the complex strain in various wearing environments, and keep stable performance. In addition, the whole system design is compact, small in size, high in integration, and can be mass-produced through modern manufacturing technologies such as nano material structure and additive manufacturing, reduces the cost, improves the production efficiency, thereby providing an efficient and reliable solution for the development of wearable sensing technology.

[0031] The utility model further describes the embodiment of the utility model below.

[0032] Referring to Figs. 1-3 A wearable human body flexible sensor device, comprising a multilayer flexible medium film, a flexible antenna 5 and a flexible sensing electrode 7. With the multilayer flexible medium film as the main body, the flexible sensing electrode 7 and the flexible antenna 5 are integrated into the upper and lower layers of the film respectively, and the elastic wire 6 is embedded in the middle layer to introduce the electrocardio signal into the film center data reading area. The three-layer structure of the multilayer flexible medium film, the most upper layer is extensible film 1, the middle layer is stress control film 2, and the most lower layer is adhesive film 3. The hierarchical distribution of the integrated film system is as shown in Fig. 2 The Young's modulus of the stress control film 2 is lower than that of the extensible film 1 and the adhesive film 3. Preferably, the dielectric constant of the film is 2-5.

[0033] As Fig. 3As shown, in one embodiment, the flexible antenna 5 adopts a inverted-F arc-shaped antenna structure, which has a arc line edge 8 as a main radiation unit, a first line edge 9 connected at the end of the arc line edge, and a second line edge 10 connected in the middle of the arc line edge, the first line edge 9 of the inverted-F arc-shaped antenna structure is connected to the first upper surface floor, and the second line edge 10 of the inverted-F arc-shaped antenna structure is connected to the feed port 11, and the arc line edge 8 of the inverted-F arc-shaped antenna structure is arranged to extend along the extension direction of the arc-shaped periphery of the first upper surface floor. The inverted-F arc-shaped antenna and the flexible sensing electrode 7 transmit signals through the via hole 12 and the elastic conductor 6 made of conductive flexible material. All elastic conductors 6 are concentrated to the reading circuit area in the center of the film from the flexible sensing electrode 7.

[0034] The embodiment of the utility model provides a kind of flexible wearable sensing-communication system integrated device scheme.Integrated to including flexible antenna 5, elastic conductor 6, flexible sensing electrode 7 and external device interface in multilayer film structure with three-layer stretchable film as main body, wearable health monitoring system of ultrathin, stretchable, stable performance can be realized.The three-layer stretchable film structure is used as main body, one layer of adhesive film is used to adhere to human skin, one layer of stretchable film is used to provide good stretchability, and the stress control film 2 in the middle can provide good bending performance, control bending stress and protect the elastic conductor 6 arranged thereon, so that the integrated device can consider the stretchability, bendability of wearable flexible system and the adhesion to skin.

[0035] The flexible sensing electrode 7 integrated on the surface of the adhesive film 3 is used to contact the surface of human skin, and the flexible sensing electrode 7 can be connected to the surface of the adhesive film 3 through copper. When used, the flexible sensing electrode 7, the adhesive film 3 as the flexible film substrate and the human skin can be closely adhered.

[0036] The inverted-F arc-shaped antenna structure is arranged on the surface of the stretchable film 1, which cooperates with the circular floor to form a common deformation structure, and in particular, the arc edge strip as the main radiation unit of the antenna structure is parallel to the circumference of the circular floor or the elliptical shape, which improves the stretchability and bending deformation performance of the flexible antenna 5, so that it can work normally within the communication bandwidth even if stretching and bending deformation occurs, without affecting the antenna radio frequency performance.

[0037] Compared with the traditional flexible antenna technology, the wearable human body flexible antenna device is provided, three-layer film structure is designed, the accuracy and stability of signal measurement are improved, and the comfort and lightness of wearing are ensured. The uppermost layer of the wearable human body flexible antenna device is an extensible film, and the flexible antenna is arranged to realize wireless communication. The middle layer is a stress control film, and the elastic lead wire is embedded, the low Young's modulus design effectively controls the bending stress, and good bending performance is provided. The lowermost layer is an adhesive film, which is attached to the skin, the flexible sensing electrode is arranged to collect the electrocardio signal, and is connected with the antenna through the elastic lead wire. Based on the hierarchical film system, the structure is kept thin and comfortable, the stability in body movement is improved, the contradiction between stability and comfort in the traditional design is solved, and high-stability signal transmission is realized.

[0038] The above is a further detailed description of the utility model in combination with specific / preferred embodiments, and cannot be regarded as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field of the utility model, without departing from the concept of the utility model, they can make several alternatives or modifications to the described embodiments, and these alternatives or modifications should be regarded as belonging to the protection scope of the utility model. In the description of the specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable way in any one or more embodiments or examples. In the case of no mutual contradiction, the skilled person in the art can combine and combine the different embodiments or examples described in the specification and the characteristics of different embodiments or examples. Although the embodiments of the utility model and their advantages have been described in detail, it should be understood that various changes, replacements and modifications can be made in this paper without departing from the protection scope of the patent application.

Claims

1. A wearable human flexible antenna device, characterized by, The application relates to a stretchable film system for wireless communication, comprising: a stretchable film as the uppermost layer, which is arranged with a flexible antenna for wireless communication; a stress control film as the intermediate layer, which is embedded with an elastic wire, the Young's modulus of the stress control film being smaller than that of the stretchable film and the adhesive film, so as to control bending stress and protect the elastic wire arranged thereon; an adhesive film as the lowermost layer, which is used for adhering to human skin and is arranged with a flexible sensing electrode for collecting an electrocardio signal, the flexible sensing electrode being connected to the flexible antenna through the elastic wire.

2. The wearable human flexible antenna device of claim 1, wherein, A via hole is arranged in the center of the floor of the flexible antenna, the via hole being filled with conductive material, and the elastic wire is guided to the surface of the film system through the conductive material in the via hole to be connected to a signal reading circuit.

3. The wearable human body flexible antenna device according to claim 1 or 2, characterized in that, The elastic wire is arranged in an S-shaped manner on the stress control film.

4. The wearable human body flexible antenna device according to claim 1 or 2, wherein, The material of the elastic wire is conductive resin or conductive glue with elasticity.

5. The wearable human body flexible antenna device according to claim 1 or 2, wherein, The thickness of the stress control film is 100 microns.

6. The wearable human flexible antenna device of claim 1 or 2, wherein, The dielectric constant of each layer of film is 2-5.

7. The wearable human flexible antenna device of claim 1 or 2, wherein, The flexible sensing electrode is connected to the surface of the adhesive film through metal copper.

8. The wearable human flexible antenna device of claim 1 or 2, wherein, The flexible sensing electrode comprises a pair of electrocardio electrodes with a spacing of more than 50 mm.

9. The wearable human body flexible antenna device of claim 1 or 2, wherein, The flexible antenna is a reverse F circular arc antenna structure, the reverse F circular arc antenna structure having a circular arc line side as a radiation arm, a first line side connected to the end of the circular arc line side and a second line side connected to the middle of the circular arc line side, the first line side of the reverse F circular arc antenna structure being connected to the circular floor of the flexible antenna, the second line side of the reverse F circular arc antenna structure being connected to a feeding port, and the circular arc line side of the reverse F circular arc antenna structure being arranged to extend along the extension direction of the arc-shaped periphery of the circular floor of the flexible antenna.

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