High-gravity (g) acceleration sensor in plane of micro-electromechanical system (MEMS) based on resonance tunnelling structure (RTS)
An acceleration sensor, silicon-based technology, applied in the field of MEMS sensors, can solve the problems that detection results are easily affected by temperature, difficult to integrate sensors in three axes, difficult to measure acceleration, etc., and achieve good resistance to high overload, good sensitivity, and not easy to fail. Effect
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[0020] Such as figure 1 As shown, the RTS-based MEMS in-plane high-g acceleration sensor includes a silicon-based frame 1, a mass 2 suspended in the silicon-based frame 1, and one side of the mass 2 is fixed to the silicon-based frame 1 by an independent support beam 3. The opposite side is fixed to the silicon-based frame 1 by two parallel composite beams, the independent support beam 3 is parallel to the composite beam, and the independent support beam 3 is arranged along the center line of the mass 2 and the two composite beams take the center line of the mass 2 as the symmetry axis Symmetrical arrangement; the composite beam includes a detection beam 5, two connecting beams 4 fixed at both ends of the detection beam 5 to realize the detection beam 5 and the mass 2, the silicon-based frame 1, the detection beam 5 is provided with strain pressure Sensitive element 6, the thickness and width of the detection beam 5 are smaller than the connecting beam 4; the independent support...
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