Acceleration and vibration sensor and method of making the same
    1.
    发明授权
    Acceleration and vibration sensor and method of making the same 失效
    加速和振动传感器及其制作方法

    公开(公告)号:US5151763A

    公开(公告)日:1992-09-29

    申请号:US631623

    申请日:1990-12-21

    摘要: A semiconductor plate having an epitaxial layer of a conductivity type opposite to that of the substrate on which it is formed has a depression, including one or more elongate channels. The depression is etched into a depth passing entirely through the epitaxial layer to isolate at least one tongue extending from a tongue pedestal into the etched depression and having parallel major sides which are perpendicular to the principal planes of the semiconductor plate. The tongue is under-etched so that it will be free to vibrate by motion in directions parallel to the principal planes of the plate. One of the major sides of the tongue faces a stationary electrode across a gap and the electrode and the tongue are insulated from each other, at least in one embodiment, by the fact that the etched depression extends all the way through the epitaxial layer in its depth. Deflection or vibration of the tongue changes the capacitance between the electrode and the tongue and contacts are provided for measuring the capacitance. Various embodiments utilizing multiple tongues and one or more electrodes are shown.

    摘要翻译: 具有与形成有外延层的基板的导电类型相反的外延层的半导体板具有包括一个或多个细长沟道的凹陷部。 将凹陷蚀刻到完全穿过外延层的深度中,以将至少一个从舌基座延伸的舌片隔离成蚀刻的凹陷部,并且具有垂直于半导体板的主平面的平行的主边。 舌头被低蚀刻,使得它可以通过平行于板的主平面的方向的运动而自由振动。 至少在一个实施例中,舌片的主要侧面之一跨越间隙固定电极,并且电极和舌片彼此绝缘,因为蚀刻的凹陷一直延伸穿过外延层的事实 深度。 舌头的偏转或振动会改变电极和舌头之间的电容,并提供触点用于测量电容。 示出了利用多个舌片和一个或多个电极的各种实施例。

    Capacitive accelerometer sensor and method for its manufacture
    2.
    发明授权
    Capacitive accelerometer sensor and method for its manufacture 失效
    电容式加速度传感器及其制造方法

    公开(公告)号:US5569852A

    公开(公告)日:1996-10-29

    申请号:US355760

    申请日:1994-12-14

    摘要: A contacting of a capacitive accelerometer sensor of monocrystalline material is achieved by a capacitive accelerometer sensor having a structure etched out of a monocrystalline layer arranged on a substrate, including a seismic mass that is only joined to the substrate by suspension segments and executing a movement in its longitudinal direction in response to the occurrence of an acceleration of parallel, plate-like first fingers extending out from this mass at right angles to their longitudinal direction and of plate-like second fingers running parallel to the first fingers and anchored to the substrate. The first and second fingers form a capacitor arrangement. The suspension segments, which are anchored with their end region that is distant from the seismic mass to the substrate, and second fingers are electrically isolated, by an isolation strip, from the other remaining layer of monocrystalline material. A passivation layer extends over the isolation strip, and at least partially over the remaining layer. Conductors arranged on the passivation layer and serving as connecting leads for the capacitor arrangement extend across the isolation strip up to the connections of the capacitor arrangement, and are contacted there.

    摘要翻译: 单晶材料的电容式加速度计传感器的接触是通过电容式加速度计传感器实现的,该传感器具有从布置在基底上的单晶层中蚀刻出的结构,包括仅通过悬挂段连接到基底的地震质量块, 其纵向方向响应于从该质量块与其纵向方向成直角地延伸的平行的板状第一指状物的加速度以及平行于第一指状物并且锚固到基底的板状第二指状物的加速度。 第一和第二指形成电容器布置。 将其远离地震质体的端部区域锚定到基底的悬挂段和第二指状物通过隔离带与另一个剩余的单晶材料层电隔离。 钝化层在隔离带上延伸,并且至少部分地覆盖剩余层。 布置在钝化层上并且用作电容器布置的连接引线的导体跨过隔离带延伸直到电容器装置的连接,并且在那里接触。

    Silicon chip for use in a force-detection sensor
    6.
    发明授权
    Silicon chip for use in a force-detection sensor 失效
    用于力检测传感器的硅芯片

    公开(公告)号:US5600074A

    公开(公告)日:1997-02-04

    申请号:US240740

    申请日:1994-05-10

    摘要: A force sensor employing a silicon chip having a force application area on a top surface and attached to a support at a bottom surface. Piezoresistive elements are arranged on the silicon chip in areas of high mechanical tension and produce signals. Circuits, which receive the signals produced by the piezoresistive elements, are arranged on the silicon chip in areas of low mechanical tension. The areas of mechanical tension may be influenced by providing grooves and/or recesses in the bottom surface of the silicon chip and by providing grooves in the top surface of the silicon chip.

    摘要翻译: PCT No.PCT / DE92 / 00870 Sec。 371日期1994年5月10日 102(e)日期1994年5月10日PCT提交1992年10月16日PCT公布。 出版物WO93 / 10430 日期:1993年5月27日一种力传感器,其采用具有在上表面上的施力区域的硅芯片并且附接到底表面上的支撑件。 压敏元件在高度机械张力的区域被布置在硅芯片上并产生信号。 接收由压阻元件产生的信号的电路在低机械张力的区域中布置在硅芯片上。 可能通过在硅芯片的底表面中提供槽和/或凹槽并且通过在硅芯片的顶表面中提供凹槽来影响机械张力的区域。

    Mass flow sensor with rupture detection
    9.
    发明授权
    Mass flow sensor with rupture detection 失效
    质量流量传感器具有破裂检测

    公开(公告)号:US06192749B1

    公开(公告)日:2001-02-27

    申请号:US09132863

    申请日:1998-08-12

    IPC分类号: G01F168

    CPC分类号: G01F1/6845 G01F25/0007

    摘要: A mass flow sensor having a thin substrate and a resistor element arranged on the thin substrate. The thin substrate is stretched on a fixed substrate. In a stretched area, at which, in response to mechanical loading of the thin substrate, the mechanical stresses concentrate, a resistor element for detecting ruptures is arranged. As a result of a rupture in the stretched area, this rupture-detection resistor is interrupted, and the rupture can be confirmed due to the sudden increase in the resistance of the resistor, caused thereby.

    摘要翻译: 一种质量流量传感器,其具有薄的衬底和布置在薄衬底上的电阻器元件。 将薄衬底在固定衬底上拉伸。 在拉伸区域中,响应于薄基板的机械负载,机械应力集中,设置用于检测断裂的电阻元件。 由于拉伸区域的断裂,该断裂检测电阻器被中断,由此引起的电阻器的电阻突然上升,可以确认断裂。

    Capacitive obstacle detector for vehicles in reverse gear
    10.
    发明授权
    Capacitive obstacle detector for vehicles in reverse gear 失效
    用于倒车的车辆的电容式障碍物探测器

    公开(公告)号:US4887066A

    公开(公告)日:1989-12-12

    申请号:US61333

    申请日:1987-06-11

    申请人: Jiri Marek

    发明人: Jiri Marek

    IPC分类号: G01C3/00

    CPC分类号: G01C3/00

    摘要: The capacitive proximity sensor for motor vehicles comprises a capacitance-measuring device for measuring the capacitance between at least one capacitor plate (1) which is fixed to the motor vehicle, on the one hand, and the environment, on the other hand, and an indicator for receiving the output signal of the measuring device.To provide a proximity sensor in which the disturbing and parasitary capacitances occurring in practice are particularly taken into account, the output signal S.sub.c of the capacitance-measuring device (5) is delivered to an amplifier (6), which is provided with a degenerative feedback loop (9) comprising a storage device (11) and a switch (10) so that the output signal (s.sub.A) of the amplifier (6) is held constant during normal travel, and the switch (10) is opened to interrupt the degenerative feedback loop (9) for a measurement. The switch is closed when the measurement has been completed.

    摘要翻译: 用于机动车辆的电容式接近传感器包括用于测量固定在机动车辆上的至少一个电容器板(1)与另一方面与环境之间的电容的电容测量装置,以及 用于接收测量装置的输出信号的指示器。 为了提供一种接近传感器,其中特别考虑到实际发生的干扰和寄生电容,电容测量装置(5)的输出信号Sc被传送到放大器(6),放大器(6)设置有退化反馈 环路(9)包括存储装置(11)和开关(10),使得放大器(6)的输出信号(sA)在正常行进期间保持恒定,并且开关(1​​0)打开以中断退化 用于测量的反馈回路(9)。 当测量完成时,开关闭合。