Inertial Measurement Unit Patch

Abstract

This invention relates to an inertial measurement unit patch, comprising: a sealed shell, a non-Newtonian fluid, a plurality of lightweight microparticles, an adhesive layer, a flexible substrate, an inertial measurement unit chip, and a battery module. This invention combines the protection of the chip on the flexible substrate by the non-Newtonian fluid against external impacts and increases conformability to muscle changes, aiming to achieve lightweight design and improve conformability to changes in the human body surface.

Claims

1. An inertial measurement unit patch, comprising: a closed shell, the closed shell being a flexible film having barrier properties against external air, the closed shell having an accommodating space inside; a non-Newtonian fluid filling the accommodating space inside the closed shell; a plurality of lightweight particles, the lightweight particles being placed in the accommodating space inside the closed shell and dispersed in the non-Newtonian fluid, the lightweight particles being at least one of elastic hollow rubber, elastic solid rubber, foamed rubber, rigid hollow plastic, rigid solid plastic or foamed plastic; an adhesive layer attached to the outside of the closed shell; a flexible substrate, the flexible substrate comprising a substrate, conductive lines and an insulator covering the surface of the conductive lines, the substrate being a polyimide film or a polyester film, and the flexible substrate being disposed within the accommodating space inside the closed shell; An inertial measurement unit (IMU) chip is disposed within an enclosure space inside a closed shell and connected to the conductive lines of a flexible substrate. The IMU chip includes a multi-axis accelerometer, a gyroscope, a magnetometer, and a wireless transmission module, which provides signal reception and transmission. A battery module is disposed within an enclosure space inside a closed shell and connected to the conductive lines of the flexible substrate.

2. An inertial measurement unit patch, comprising: a closed shell, the closed shell being a flexible membrane with barrier properties against external air, the closed shell having two spacer layers separating a surface accommodating space, a middle accommodating space, and a bottom accommodating space; a non-Newtonian fluid, the non-Newtonian fluid filling the surface accommodating space, the middle accommodating space, and the bottom accommodating space inside the closed shell; a plurality of lightweight particles, the lightweight particles being placed in the surface accommodating space and the bottom accommodating space inside the closed shell and dispersed in the non-Newtonian fluid, the lightweight particles being at least one type of elastic hollow rubber, elastic solid rubber, foamed rubber, rigid hollow plastic, rigid solid plastic, or foamed plastic; and an adhesive layer attached to the outside of the closed shell. A flexible substrate comprising a substrate, conductive lines, and an insulator covering the surface of the conductive lines, wherein the substrate is a polyimide film or a polyester film, and the flexible substrate is disposed within an intermediate layer accommodating space inside a closed shell; an inertial measurement unit (IMU) chip disposed within an intermediate layer accommodating space inside a closed shell and connected to the conductive lines of the flexible substrate, the IMU chip comprising a multi-axis accelerometer, a gyroscope, a magnetometer, and a wireless transmission module, the wireless transmission module providing signal reception and transmission; and a battery module disposed within an intermediate layer accommodating space inside a closed shell and connected to the conductive lines of the flexible substrate.

3. An inertial measurement unit patch, comprising: a closed shell, the closed shell being a flexible membrane with barrier properties against external air, the closed shell having two spacer layers separating a surface accommodating space, an intermediate accommodating space, and a bottom accommodating space; a non-Newtonian fluid, the non-Newtonian fluid filling the surface accommodating space, the intermediate accommodating space, and the bottom accommodating space inside the closed shell; a plurality of lightweight particles, the lightweight particles being placed in the intermediate accommodating space inside the closed shell and dispersed in the non-Newtonian fluid, the lightweight particles being at least one type of elastic hollow rubber, elastic solid rubber, foamed rubber, rigid hollow plastic, rigid solid plastic, or foamed plastic; and an adhesive layer attached to the outside of the closed shell. A flexible substrate comprising a substrate, conductive lines, and an insulator covering the surface of the conductive lines, wherein the substrate is a polyimide film or a polyester film, and the flexible substrate is disposed within an intermediate layer accommodating space inside a closed shell; an inertial measurement unit (IMU) chip disposed within an intermediate layer accommodating space inside a closed shell and connected to the conductive lines of the flexible substrate, the IMU chip comprising a multi-axis accelerometer, a gyroscope, a magnetometer, and a wireless transmission module, the wireless transmission module providing signal reception and transmission; and a battery module disposed within an intermediate layer accommodating space inside a closed shell and connected to the conductive lines of the flexible substrate.

4. The inertial measurement unit patch as described in claim 1, 2, or 3, wherein, The enclosed shell material is rubber, plastic rubber, or a rubber-blended fabric composite material.

5. The inertial measurement unit patch as described in claim 2 or 3, wherein, The enclosed shell has a spacer layer made of rubber, plastic rubber, or a rubber-blended fabric composite material.

6. The inertial measurement unit patch as described in claim 1, 2, or 3, wherein, The stress-velocity gradient relationship of this non-Newtonian fluid does not obey Newton's law of viscosity, and its shear stress and shear strain exhibit a nonlinear relationship. This non-Newtonian fluid is a polymer solution.

7. The inertial measurement unit patch as described in claim 1, 2, or 3, wherein, The lightweight microparticles are at least one type of elastic hollow rubber, elastic solid rubber, foamed rubber, rigid hollow plastic, rigid solid plastic, or foamed plastic.

8. The inertial measurement unit patch as described in claim 1, 2, or 3, wherein, The battery module is a lithium-ion battery, a polymer lithium battery, a zinc-mercury battery, a nickel-cadmium battery, or a nickel-metal hydride battery.

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