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    • 4. 发明授权
    • Sensor for measuring surface expansion of a hollow body with film
protecting against dirt and burrs
    • 用于测量具有防止灰尘和毛刺的膜的中空体的表面膨胀的传感器
    • US5942693A
    • 1999-08-24
    • US33602
    • 1998-03-03
    • Klaus-Christoph HarmsPaul KirschbaumJosef Glaser
    • Klaus-Christoph HarmsPaul KirschbaumJosef Glaser
    • G01L9/00G01L7/04G01L9/08G01M15/00
    • G01L9/008G01L9/0027
    • A sensor is provided that can be used for measuring the internal pressure of injection lines of diesel engines includes two housing parts that are connected via a joint and can be clamped to the injection line using a clamping device. At least one electrical measuring element is pressed, in essentially uniform elastic fashion, onto the surface of the hollow body to be measured. The sensor also includes a support element that operates essentially in radial fashion. A protective film is arranged between the surface and the measuring element. The protective film has a thickness greater than or equal to the radial dimension of foreign bodies or the like that are to be expected on the surface of the hollow body to be measured. The protective film consists of plastic with a low modulus of elasticity. In this way, impurities, burrs and the like on the tube can easily be "embedded" in the protective film, which, as a result of the low elasticity modulus, nonetheless still ensures a sufficiently good transmission to the measuring element of the surface expansions actually to be measured.
    • 提供了可用于测量柴油发动机注射管线内部压力的传感器,包括通过接头连接的两个壳体部件,并可使用夹紧装置将其夹紧到注射管线上。 至少一个电测量元件以基本均匀的弹性方式被按压到待测量的中空体的表面上。 传感器还包括基本上以径向方式操作的支撑元件。 在表面和测量元件之间布置有保护膜。 保护膜的厚度大于或等于要测量的中空体的表面上预期的异物等的径向尺寸。 保护膜由具有低弹性模量的塑料组成。 以这种方式,管上的杂质,毛刺等可以容易地“嵌入”保护膜中,由于低弹性模量,仍然确保了足够好的透射到测量元件的表面膨胀 实际上要测量。
    • 8. 发明申请
    • Sensor Element Having at least One Measurement Element with Piezoelectric and Pyroelectric Properties
    • 传感器元件具有至少一个具有压电和热电性能的测量元件
    • US20070283769A1
    • 2007-12-13
    • US11664498
    • 2005-10-07
    • Josef GlaserDietmar KroegerGernot LeuprechtChristian Reiter
    • Josef GlaserDietmar KroegerGernot LeuprechtChristian Reiter
    • G01L1/16
    • H01L41/1132G01L1/16G01L9/085G01P1/006G01P15/09
    • A sensor element (1) has at least one measurement element (2) with piezoelectric and pyroelectric properties, and measurement electrodes (3). A measurement variable and a disturbance variable act simultaneously upon the at least one measurement element (2) and the measurement signal derived from the measurement electrodes (3) includes an interference signal. The sensor element (1) has at least one compensation element (4, 4′) upon which only the disturbance variable acts, so that a correction signal used to compensate for the interference signal in the measurement signal can be derived from the compensation element (4, 4′). The invention consists in that the compensation element (4, 4′) is in thermal contact with a first support (10) and with a second support (11) of the measurement element (2), or with the measurement element (2), over its length between the supports (10, 11), so that substantially the same temperature field is established in the measurement element (2) and in the compensation element (4, 4′).
    • 传感器元件(1)具有至少一个具有压电和热电特性的测量元件(2)和测量电极(3)。 测量变量和干扰变量同时作用在至少一个测量元件(2)上,并且从测量电极(3)导出的测量信号包括干扰信号。 传感器元件(1)具有至少一个补偿元件(4,4'),在该补偿元件(4,4')上只有干扰变量起作用,使得用于补偿测量信号中的干扰信号的校正信号可以从补偿元件 4,4')。 本发明包括:补偿元件(4,4')与测量元件(2)的第一支撑件(10)和第二支撑件(11)热接触,或与测量元件(2)热接触, 在支撑件(10,11)之间的长度上,使得在测量元件(2)和补偿元件(4,4')中建立基本相同的温度场。
    • 9. 发明授权
    • Pressure sensor
    • 压力传感器
    • US5353643A
    • 1994-10-11
    • US990799
    • 1992-12-15
    • Josef Glaser
    • Josef Glaser
    • G01L9/00G01L9/04G01L9/08G01L9/12G01L19/04G01L23/22
    • G01L9/0001G01L19/04G01L23/22G01L9/0002G01L9/0005
    • To compensate for temperature effects on the measuring signal of a pressure sensor which includes a membrane part with at least indirect signal generation and is a supporting base, the membrane part being deformed by the pressure to be measured and cooperable with a pressure sensing element, the the membrane part is constructed to include at least one pair of concentric cylindrical surfaces positioned at a small radial distance from each other. The cylindrical surfaces are closed along their circumference, and one of the cylindrical surfaces increases its diameter when subjected to pressure and the diameter of the other decreases. Changes of the two diameters in the same direction take place in the instance of a temperature change.
    • 为了补偿温度对包括具有至少间接信号产生的膜部分的压力传感器的测量信号的温度影响,并且是支撑基座,膜部分被测量的压力变形并与压力感测元件配合, 膜部分构造成包括彼此相距小的径向距离的至少一对同心圆柱形表面。 圆柱形表面沿其圆周封闭,其中一个圆柱形表面在经受压力时增加其直径,另一个圆柱形表面的直径减小。 在相同方向上的两个直径的变化在温度变化的情况下发生。
    • 10. 发明授权
    • Pressure sensor for measurements in hot, dynamic processes
    • 用于在热,动态过程中进行测量的压力传感器
    • US07950285B2
    • 2011-05-31
    • US12447500
    • 2007-11-12
    • Josef Glaser
    • Josef Glaser
    • G01L7/00
    • G01L23/28G01L19/04G01L23/10
    • The invention relates to a pressure sensor for measurements in hot, dynamic processes. The pressure sensor comprises a cylindrical housing in which a measuring element is located, and a round or annular membrane having at least one outer support. The outer support is arranged on the housing, offset behind a housing extension. The measuring element is adapted to acquire measurement data as a result of an axial displacement of the membrane. The housing extension is provided with a heat shield which is arranged, except on its edges, interspaced behind a gap.
    • 本发明涉及用于在热动态过程中进行测量的压力传感器。 压力传感器包括其中定位有测量元件的圆柱形壳体和具有至少一个外部支撑件的圆形或环形膜。 外部支撑件布置在壳体上,偏移在壳体延伸部分之后。 测量元件适于获取作为膜的轴向位移的结果的测量数据。 壳体延伸部设置有隔热罩,除了其边缘之外布置有间隔开的隔热件。