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CN-116027896-B - Self-powered man-machine interaction sensing glove based on 3D printing and printing method thereof

CN116027896BCN 116027896 BCN116027896 BCN 116027896BCN-116027896-B

Abstract

The invention belongs to the technical field of human-computer interaction, and discloses a self-powered human-computer interaction sensing glove based on 3D printing and a printing method thereof, wherein the sensing glove comprises a flexible substrate layer, a conductive coil and a magnetic polymer layer, and the flexible substrate layer is a wearable flexible substrate glove integrally formed through 3D printing; the magnetic polymer layer is formed on the thumb area of the flexible base glove through 3D printing, the conductive coils are respectively formed on the other finger areas of the flexible base glove through 3D printing, and when the glove works, the magnetic polymer layer of the thumb area and the conductive coils of the other finger areas move relatively, so that magnetic flux passing through the conductive coils is changed, and therefore characteristic electric signals are generated. The invention can generate the characteristic electric signal through the relative motion of the conductive coil and the magnetic polymer, and wirelessly transmit the characteristic electric signal to the external terminal equipment, so that gesture recognition and man-machine interaction can be realized in a non-visual environment.

Inventors

  • SU BIN
  • ZHANG SHANFEI
  • YAN CHUNZE
  • SHI YUSHENG

Assignees

  • 华中科技大学

Dates

Publication Date
20260505
Application Date
20221216

Claims (10)

  1. 1. The self-powered human-computer interaction sensing glove based on 3D printing is characterized by comprising a flexible substrate layer, a conductive coil and a magnetic polymer layer, wherein the flexible substrate layer is a wearable flexible substrate glove integrally formed by directly writing 3D printing through transparent ink under the assistance of ultraviolet light curing, the magnetic polymer layer is formed by directly writing 3D printing through the magnetic ink on a thumb area of the flexible substrate glove under the assistance of infrared light heating curing, the conductive coil is formed by directly writing 3D printing through the ink on other finger areas of the flexible substrate glove through the assistance of infrared light heating curing, a layer of transparent ink is printed on the wearable flexible substrate glove for packaging, the packaged conductive coil is provided with conductivity under the pressure effect, the magnetic polymer layer is provided with magnetism under the magnetizing effect, and when the self-powered human-computer interaction sensing glove is operated, the magnetic polymer layer in the thumb area and the conductive coil in the other finger areas relatively move based on a preset gesture, so that the magnetic flux of the conductive coil is changed, and the characteristic corresponding to the preset gesture can be generated.
  2. 2. The self-powered man-machine interaction sensing glove based on 3D printing is characterized in that the number of turns of a conductive coil is 1-5, the diameter of the outermost ring of the conductive coil is 5-12 mm, the metal ink comprises gallium-based liquid metal and thermosetting liquid silica gel, and the mass ratio of the metal ink is 60-90 parts of gallium-based liquid metal and 10-40 parts of thermosetting liquid silica gel.
  3. 3. The self-powered human-computer interaction sensing glove based on 3D printing, which is disclosed in claim 1, is characterized in that the size of the magnetic polymer layer is 8-12 mm long and 8-12 mm wide, the thickness of the magnetic polymer layer is 1-5 mm, the magnetic ink comprises magnetic powder, thermosetting liquid silica gel and fumed silica, and the mass ratio of the magnetic ink is 20-70 parts of magnetic powder, 30-70 parts of thermosetting liquid silica gel and 1-10 parts of fumed silica in parts by mass.
  4. 4. The self-powered human-computer interaction sensing glove based on 3D printing as claimed in claim 1, wherein the transparent ink comprises 85-95 parts of ultraviolet curing resin and 5-15 parts of fumed silica in mass portion.
  5. 5. The self-powered human-computer interaction sensing glove based on 3D printing as claimed in claim 1, wherein the conductive coil is further connected with an eight-channel voltmeter, and the eight-channel voltmeter is used for transmitting characteristic electrical signals to external terminal equipment for gesture recognition.
  6. 6. A method of printing a self-powered human-machine interaction sensing glove based on 3D printing according to any of claims 1-5, the method comprising: S1, preparing transparent ink, metal ink and magnetic ink, and outputting the three through three ink extrusion heads of the ink direct-writing 3D printing integrated equipment; s2, printing the glove with the flexible substrate by using transparent ink under the assistance of ultraviolet light curing; S3, printing conductive coils on the four fingers except the thumb on the flexible substrate glove by using metal ink under the assistance of infrared light heating and curing; s4, printing a magnetic polymer layer on the thumb by using magnetic ink under the assistance of infrared light heating and curing to obtain the sensing glove; s5, printing a layer of transparent ink on the sensing glove for packaging the sensing glove; S6, applying pressure to the encapsulated conductive coil on the sensing glove, so that the separated liquid metal particles in the conductive coil are connected together to have conductivity; s7, magnetizing the magnetic polymer layer on the packaged sensing glove, so that the self-powered sensing glove is obtained.
  7. 7. The printing method of the self-powered human-computer interaction sensing glove based on 3D printing according to claim 6, wherein the transparent ink is prepared by the following method: The method comprises the steps of stirring ultraviolet curing resin and fumed silica with a preset mass ratio at a first speed for a first time to obtain a first mixture, centrifuging the first mixture in a centrifuge to obtain transparent ink, wherein the first speed is 1000r/min-2500r/min, the first time is 5min-15min, the centrifuging speed of the first mixture is 2000r/min-3000r/min, and the centrifuging time of the first mixture is 3min-10min.
  8. 8. The printing method of the self-powered human-computer interaction sensing glove based on 3D printing as claimed in claim 6, wherein the metal ink is prepared by the following method: stirring thermosetting liquid silica gel and gallium-based liquid metal with preset mass ratio at a second speed for a second time to obtain a second mixture, centrifuging the second mixture in a centrifuge to obtain metal ink, wherein the second speed is 1000r/min-2500r/min, the second time is 5min-15min, the centrifuging speed of the second mixture is 2000r/min-3000r/min, and the centrifuging time of the second mixture is 3min-10min.
  9. 9. The printing method of the self-powered human-computer interaction sensing glove based on 3D printing as claimed in claim 6, wherein the magnetic ink is prepared by the following method: Stirring thermosetting liquid silica gel, magnetic powder and fumed silica with preset mass ratio at a third speed for a third time to obtain a third mixture, centrifuging the third mixture in a centrifuge to obtain magnetic ink, wherein the third speed is 1000r/min-2500r/min, the third time is 5min-15min, the centrifuging speed of the third mixture is 2000r/min-3000r/min, and the centrifuging time of the third mixture is 3min-10min.
  10. 10. The printing method of the self-powered human-computer interaction sensing glove based on 3D printing according to claim 6, wherein in the step S6, the pressure applied to the conductive coil is 5KPa-10KPa, and the voltage for magnetizing the magnetic polymer layer on the sensing glove is 1500v-1900v.

Description

Self-powered man-machine interaction sensing glove based on 3D printing and printing method thereof Technical Field The invention belongs to the technical field of human-computer interaction, and particularly relates to a self-powered human-computer interaction sensing glove based on 3D printing and a printing method thereof. Background Human-computer interaction devices offer the possibility to convert human gestures into electrical signals that are communicated to machines, and have recently become a promising platform for virtual reality, healthcare, physical therapy, training and entertainment. Currently, camera-based visual recognition systems, gyroscopes and triboelectric nano-generators are three typical human-machine interaction devices. For visual recognition systems, the camera should be fixed in front of the user, which means that the camera is inconvenient to use and carry, and the space for the user to move is limited. Especially in extreme environments outside the atmosphere, such as when a diver is under water, when a firefighter is in smoke, or other visually unrecognizable, the transmission of light can be greatly interrupted by the surrounding environment, resulting in the failure of the visual recognition system for human-machine interaction. Gyroscopes are difficult to use in extreme environments due to their heavy shape. In the case of triboelectric nano-sensors, although they are flexible to use, self-powered, capable of typing in and capable of real-time voice broadcasting, droplets/dust can hinder the generation of nano-triboelectric sensor surface charges in non-visual environments, rendering them ineffective. In addition, the existing wearable man-machine interaction equipment has a too single force feedback expression form, is generally driven by an external driving device, and realizes man-machine interaction through tactile feedback or force feedback, and the like, as disclosed in patent CN109157283A, an interactive flexible glove system adopts a flexible electrode to drive fluid to realize feedback control, and the system comprises a glove body; the invention relates to a tactile feedback device arranged on a glove body, which comprises an output end, a conduit and a driving end, wherein the driving end is provided with a compressible accommodating cavity, fluid is filled in the accommodating cavity, the accommodating cavity is communicated with the output end through the conduit, and when the accommodating cavity is compressed, the fluid in the accommodating cavity can be pressed to the output end so as to output pressing force to a human hand. The equipment is complex in structure and is difficult to apply to the deep water field. At present, the newly-appearing flexible magneto-electric sensing device can be used as a self-powered sensor and an energy harvester, and the working mechanism of the flexible magneto-electric sensing device is that the magnetic flux passing through a conductive coil is changed based on the mutual movement between the magnetism of the flexible magneto-electric sensing device and the conductive coil part, and the changed magnetic flux in a closed coil can generate induced electromotive force according to Faraday electromagnetic induction law, so that the generation and transmission of an electric signal can be realized. Since the signal generation mode does not depend on mutual contact and optical action, the conversion of mechanical signals and electric signals can be realized in a non-visual environment. Conventional flexible magnetoelectric device fabrication typically includes two steps, a separate molding process for the different components and a process for assembling the components to yield the final device. The manufacturing process is complex, the structure of forming equipment is complex, the forming equipment is easy to have structural defects after being assembled, and the material cost and the manpower resource waste are large. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a self-powered human-computer interaction sensing glove based on 3D printing and a printing method thereof, which mainly solve the problems that the existing human-computer interaction equipment is single in application environment, incapable of self-powering and complex in equipment structure. The invention provides a self-powered human-computer interaction sensing glove based on 3D printing, which comprises a flexible substrate layer, a conductive coil and a magnetic polymer layer, wherein the flexible substrate layer is a wearable flexible substrate glove formed integrally through ink direct writing and 3D printing, the magnetic polymer layer is a thumb area of the flexible substrate glove formed through ink direct writing and 3D printing, the conductive coil is formed in other finger areas of the flexible substrate glove through ink direct writing and 3D printing respectively, and when the self-powered human-compute