Liquid metal omnidirectional multi-threshold inertia switch
A liquid metal and inertial switch technology, applied in the field of inertial switches, can solve the problems of difficult to realize low-threshold inertial switch preparation, many vibration modes of mechanical structures, and difficult to improve stability, and achieve small contact resistance, device structure design and production The effect of simple process and long contact time
Pending Publication Date: 2021-10-19
QUJING NORMAL UNIV
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Problems solved by technology
However, the traditional mechanical structure inertial switch has large contact resistance, serious signal bounce, and difficult to improve stability, especially for low-threshold civilian inertial systems
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] like Figure 1-4 As shown, the embodiment of the present invention discloses a liquid metal omnidirectional multi-threshold inertial switch, comprising: a substrate 1, a functional structure layer 2 and a packaging cover 3; the substrate 1 is a regular polygonal structure; the surface of the substrate 1 is distributed with multiple a plurality of electrode groups 4; the number of electrode groups 4 corresponds to the number of sides of the substrate 1, ...
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Abstract
The invention discloses a liquid metal omnidirectional multi-threshold inertia switch which comprises a substrate, a functional structure layer and a packaging cover sequentially stacked and bonded from bottom to top. The substrate is of a regular polygon structure; a plurality of electrode groups which are arranged around the center of the substrate and correspond to the sides of the substrate in number are distributed on the surface of the substrate; the functional structure layer is provided with a liquid storage tank, a plurality of microfluidic variable cross-section channels and a plurality of clamping grooves; the liquid storage tank is located in the center of the functional structure layer, and liquid metal is contained in the liquid storage tank; the microfluidic variable cross-section channel is arranged in the radial direction of the liquid storage tank and is communicated with the liquid storage tank; the electrode groups are in one-to-one correspondence with the clamping grooves and are adaptively clamped with the clamping grooves, and the contact of each electrode group is positioned in the microfluidic variable cross-section channel corresponding to the contact in position. Liquid metal is used as a movable part, stretches, deforms and enters the microfluidic variable cross-section channel when subjected to inertia force, and makes contact with the electrode pairs at the corresponding threshold values to enable an external circuit to be connected, and multi-threshold stable measurement on acceleration is achieved.
Description
technical field [0001] The invention relates to the technical field of inertial switches, in particular to a liquid metal omnidirectional multi-threshold inertial switch. Background technique [0002] Inertial switch is a sensing and actuator device that relies on inertial drive to realize the switching of external circuits. It can be used for vibration detection, inertial triggering, etc., and has a wide range of applications in aerospace, fuze systems, and civil consumer electricity. However, the traditional mechanical structure inertial switch has high contact resistance, severe signal bounce, and difficult to improve stability, especially for low-threshold civil inertial systems. The mechanical structure using a multi-degree-of-freedom spring suspension system as a movable electrode has many vibration modes, and it is difficult to realize the preparation of a low-threshold inertial switch. [0003] Therefore, how to provide a liquid metal omnidirectional multi-threshold...
Claims
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IPC IPC(8): H01H35/14
CPCH01H35/141
Inventor 陈文国朱蓉辉高婷曹晓健王瑞王慧颖
Owner QUJING NORMAL UNIV