发明申请
- 专利标题: MEMS VACUUM SENSOR BASED ON THE FRICTION PRINCIPLE
- 专利标题(中): 基于摩擦原理的MEMS真空传感器
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申请号: US12301874申请日: 2007-05-09
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公开(公告)号: US20100024562A1公开(公告)日: 2010-02-04
- 发明人: Steffen Kurth , Dirk Tenholte , Karla Hiller , Christian Kaufmann , Thomas Gessner , Wolfram Doetzel
- 申请人: Steffen Kurth , Dirk Tenholte , Karla Hiller , Christian Kaufmann , Thomas Gessner , Wolfram Doetzel
- 申请人地址: DE Muenchen
- 专利权人: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.,
- 当前专利权人: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.,
- 当前专利权人地址: DE Muenchen
- 优先权: DE102006024381.1 20060524
- 国际申请: PCT/EP2007/004078 WO 20070509
- 主分类号: G01L21/22
- IPC分类号: G01L21/22
摘要:
The invention relates to a sensor element for pressure measurement, having a substrate (5) and at least one mass element (1), which is arranged spaced apart from the substrate (5) and is connected in an oscillating manner to the substrate (5) and/or a support body (6) fixed relative to the substrate (5), so that a gap is formed between the mass element (1) and the substrate (5), the width of which can be varied through oscillations of the mass element (1). At least one recess and/or at least one bushing (4) is located in the surface of the substrate (5) delimiting the gap, which recess is used for reducing the damping of the oscillation of the mass element through the gas or plasma surrounding the mass element (1). The sensor element is used in particular in pressure sensors for measuring pressures in the vacuum range. Through the use of the sensor element according to the invention as a pressure sensor, maximum pressures up to the range of atmospheric air pressure can be recorded. The lowest pressures to be determined are in the range of 10−6 mbar.
公开/授权文献
- US08186225B2 MEMS vacuum sensor based on the friction principle 公开/授权日:2012-05-29
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