A method for switching on and off a flexible active tag

Abstract

The application discloses a switching method for a flexible active tag, comprising the following steps: reserving a position in the flexible active tag to install a liquid sealing groove, the liquid sealing groove is provided with a positive electrode and a negative electrode on both sides or top and bottom; encapsulating a conductive liquid burst ball in the liquid sealing groove to form a disposable switch; by extruding the conductive liquid burst ball, the conductive liquid fills the liquid sealing groove after the burst, so that the positive electrode and the negative electrode are connected in conduction, the chip circuit is activated, and the switching action is completed. The switching method for the flexible active tag provided by the application can greatly reduce the product thickness, reduce the switching difficulty, improve the transportation reliability, reduce the production cost and improve the production efficiency by pressing and extruding the burst ball to connect the two electrodes in conduction and starting the power supply by using the liquid.

Description

Technical Field

[0001] This invention relates to a power-on / off method, and more particularly to a power-on / off method for flexible active tags. Background Technology

[0002] Currently, among active RFID tags, low-power tags such as Bluetooth tags are becoming increasingly smaller. With the development of flexible batteries, Bluetooth tags can now be made thin, light, and compact, and can be customized for printing. Compared to other paper tags and RFID tags, Bluetooth tags can use batteries to drive sensors to acquire sensor information such as temperature and humidity, and can be located with sub-meter high precision, making them suitable for future Internet of Things scenarios, especially for asset location and inventory, and process monitoring of cold chain transportation.

[0003] As Bluetooth tags become increasingly smaller, the requirements for their power-on mechanisms become more stringent. However, the mainstream power-on methods for flexible tags are still mainly button power on / off, toggle switches, tissue box activation, or NFC signal activation. The current power-on drawbacks of various flexible tags are as follows:

[0004] 1. Push-button switches and toggle switches require metal conductors, which necessitates large size and thickness, thus hindering the miniaturization of labels.

[0005] 2. During transportation, the tissues are prone to falling off. Labels are becoming smaller and thinner, and the tissue area is also decreasing, reducing friction and making them difficult to secure. Furthermore, consistent tissue production is difficult, making mechanized positioning challenging, and tissues are prone to falling off during transport.

[0006] 3. The antenna area of ​​NFC is at least 2.5×2.5 cm, which is large and the chip cost is high, making it difficult to reduce costs.

[0007] Moreover, contactless power-on requires a large antenna size, which is very costly.

[0008] As can be seen from the above, as tags continue to evolve into flexible tags and use flexible batteries, their size and thickness continue to decrease, and the shortcomings of continuing to use traditional switches on circuit boards are becoming increasingly apparent, urgently requiring improvements to provide new switching methods. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a power-on / off method for flexible active tags, which can reduce the difficulty of powering on / off, improve transportation reliability, reduce production costs, and improve production efficiency.

[0010] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a power-on / off method for flexible active tags, comprising the following steps: installing a liquid sealing groove in a reserved position in the flexible active tag, wherein the two sides or the top and bottom of the liquid sealing groove are the positive and negative terminals of the power supply; encapsulating conductive liquid burst beads in the liquid sealing groove to form a one-time switch; by squeezing the conductive liquid burst beads, the conductive liquid fills the liquid sealing groove after rupture, so that the positive and negative terminals of the power supply are connected and conductive, activating the chip circuit and completing the power-on / off action.

[0011] Furthermore, the positive and negative terminals of the power supply are two metal contacts, and the two metal contacts, the conductive liquid bursting bead, and the liquid sealing groove are encapsulated into a switching component, which has soldered or press-fitted contacts.

[0012] Furthermore, the flexible active label is manufactured by custom printing and then installing the switching components.

[0013] Furthermore, the liquid sealing groove is a plastic conduit.

[0014] Furthermore, the conductive liquid in the conductive liquid bursting bead is a graphene dispersion, a polyaniline solution, or a conductive ink.

[0015] Furthermore, the conductive liquid burst beads are spherical in shape, with a diameter of 2.6–4.6 mm.

[0016] Furthermore, the number of conductive liquid burst beads is two, one of which serves as the main switch and the other as a backup switch.

[0017] Furthermore, there are two conductive liquid bursting beads. The first conductive liquid bursting bead is burst by compression, and the second conductive liquid bursting bead is slowly dissolved and released by the conductive liquid after the first conductive liquid bursting bead is wetted.

[0018] Furthermore, the surface coating of the second conductive liquid bursting bead is made of photodegradable plastic, and the conductive liquid in the first conductive liquid bursting bead is a mixture of graphene dispersion, polyaniline solution and conductive ink.

[0019] Furthermore, the graphene dispersion, polyaniline solution, and conductive ink are mixed in a volume ratio of 5:3:2.

[0020] Compared with existing technologies, the present invention has the following advantages: The power-on / off method for flexible active labels provided by the present invention connects two electrodes by pressing and squeezing the bursting bead, and uses liquid to power on the device, which can greatly reduce the product thickness. Specific advantages are as follows: 1) Small size and controllable shape further reduce label volume; 2) Various modular switches can be formed by combining the conductive liquid tank and the bursting bead, improving installation convenience and adapting to various flexible active labels; 3) Convenient production and reduced costs; liquid bursting beads are more cost-effective than traditional metal switches and chip switches. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the flexible active tag of the present invention;

[0022] Figure 2 This is a schematic diagram of the liquid sealing tank, conductive liquid bursting beads, and positive and negative power supply packaging of the present invention.

[0023] The diagram is marked as follows:

[0024] 1. Positive power supply terminal; 2. Liquid sealing tank; 3. Conductive liquid bursting beads.

[0025] 4. Power supply negative terminal; 5. Chip circuit; 6. Metal contacts. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0027] Please see Figure 1 The power-on / off method for flexible active tags provided by this invention includes the following steps:

[0028] A liquid sealing groove 2 is installed in a reserved position in the flexible active tag. The liquid sealing groove 2 has a positive power supply 1 and a negative power supply 4 on both sides or above and below.

[0029] A one-time switch is formed by encapsulating conductive liquid burst beads 3 in a liquid sealing tank 2;

[0030] By squeezing the conductive liquid bursting bead 3, the conductive liquid fills the liquid sealing tank 2 after rupture, making the positive and negative terminals of the power supply connected and conducting electricity, activating the chip circuit 5, and completing the power on / off action.

[0031] The circuit of this invention adopts a flexible circuit with a liquid sealing groove 2 in the middle, which can be a plastic conduit. The positive and negative terminals of the power supply have conductive materials that absorb the conductive liquid to conduct current, or the circuit is hollow and filled with conductive liquid to connect the positive and negative terminals.

[0032] Please continue reading Figure 2In practical applications, the conductive liquid bursting bead 3 and the liquid sealing tank 2 are combined with two metal contacts 6 and packaged into a single component, complete with solderable or press-fit contacts. This serves as a single component. Circuit design only requires designing the contacts to encapsulate the component. The flexible active label is manufactured through custom printing and then mounted onto the switching component.

[0033] The present invention provides a power-on / off method for flexible active tags, wherein the conductive liquid in the conductive liquid burst beads 3 is preferably a graphene dispersion, a polyaniline solution, or a conductive ink. The conductive liquid burst beads 3 are generally spherical in shape, with a diameter of approximately 2.6–4.6 mm.

[0034] To further improve the reliability of the label switch, two conductive liquid burst beads 3 are used: one as the main switch and the other as a backup switch. More preferably, there are two conductive liquid burst beads 3, including a first and a second conductive liquid burst bead. The first conductive liquid burst bead bursts through compression, and the surface coating of the second conductive liquid burst bead is made of a biodegradable material, slowly dissolving and releasing the conductive liquid after the first bead bursts. This is because the battery's terminal voltage decreases as the battery's usage time increases. Initially, when the battery voltage is high, one conductive liquid burst bead is sufficient to meet the power supply requirements. As the battery voltage decreases, conductive liquid is continuously replenished, ensuring stable operation even after the battery's operating voltage drops. This allows the battery to perform at its maximum efficiency, thereby extending the label's lifespan.

[0035] In a preferred embodiment, the surface coating of the second conductive liquid bursting bead is made of photodegradable plastic, such as ethylene / carbon monoxide copolymer or vinyl / vinyl ketone copolymer. The conductive liquid in the first conductive liquid bursting bead is a mixture of graphene dispersion, polyaniline solution, and conductive ink; the volume ratio of the graphene dispersion, polyaniline solution, and conductive ink is 5:3:2. Graphene, as the thinnest yet strongest nanomaterial in the world, has a resistivity of only about 10⁻⁶ Ω·cm, lower than copper or silver; the highly conductive aqueous dispersion of polyaniline has excellent environmental and chemical stability; and the conductive ink can be made into a paste suitable for use as a conductive circuit. Through the above preferred ratio, the excellent properties of each component are fully utilized, ensuring both excellent and reliable conductivity and ensuring that the second conductive liquid bursting bead can slowly and stably degrade and release the conductive liquid.

[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be defined by the claims.

Claims

1. A power-on / off method for flexible active tags, characterized in that, Includes the following steps: A liquid sealing groove is installed in a reserved position in the flexible active tag, and the two sides or the top and bottom of the liquid sealing groove are the positive and negative terminals of the power supply. A one-time switch is formed by encapsulating conductive liquid burst beads in a liquid sealing tank; By squeezing the conductive liquid beads, the conductive liquid fills the liquid-sealed tank after the beads burst, making the positive and negative terminals of the power supply connected and conducting electricity, activating the chip circuit and completing the power-on and power-off action. The conductive liquid bursting beads are of two types. The first conductive liquid bursting bead is burst by compression, and the second conductive liquid bursting bead is slowly dissolved and released by the conductive liquid after the first conductive liquid bursting bead is wetted.

2. The power-on / off method for flexible active tags as described in claim 1, characterized in that, The power supply has two metal contacts, and the two metal contacts, the conductive liquid bursting bead, and the liquid sealing groove are encapsulated into a switching component. The switching component has soldered or press-fitted contacts.

3. The power-on / off method for flexible active tags as described in claim 2, characterized in that, The flexible active label is manufactured by custom printing and then installing the switching components.

4. The power-on / off method for flexible active tags as described in claim 1, characterized in that, The liquid sealing tank is a plastic conduit.

5. The power-on / off method for flexible active tags as described in claim 1, characterized in that, The conductive liquid in the conductive liquid bursting beads is a graphene dispersion, a polyaniline solution, or a conductive ink.

6. The power-on / off method for flexible active tags as described in claim 1, characterized in that, The conductive liquid burst beads are spherical in shape, with a diameter of 2.6–4.6 mm.

7. The power-on / off method for flexible active tags as described in claim 1, characterized in that, The surface coating of the second conductive liquid bursting bead is made of photodegradable plastic, and the conductive liquid in the first conductive liquid bursting bead is a mixture of graphene dispersion, polyaniline solution and conductive ink.

8. The power-on / off method for flexible active tags as described in claim 7, characterized in that, The graphene dispersion, polyaniline solution, and conductive ink are mixed in a volume ratio of 5:3:2.

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