Acceleration sensor with oppositely-polarized piezoelectric plates
    2.
    发明授权
    Acceleration sensor with oppositely-polarized piezoelectric plates 失效
    具有相反极化压电板的加速度传感器

    公开(公告)号:US5473930A

    公开(公告)日:1995-12-12

    申请号:US384238

    申请日:1995-02-06

    CPC分类号: G01P21/00 G01P15/0922

    摘要: An acceleration sensor, which is particularly adapted for use in motor vehicles, is improved by structuring it to be readily testable, to assure reliability before installation. The acceleration sensor has a piezo element (1), which consists of at least two piezo-electric plates (2) placed on top of each other, the piezo-electrical polarization of which is oriented in opposite directions. At least two electrodes (9) are placed on each of the topside (7) and the underside (8) of the piezo element (1). For testing the sensor, the piezo element is deformed by the application of an electrical voltage to electrodes (9) of a first lateral portion (11a) of the piezo element. This deformation is detected by means of a deformation-generated voltage at the electrodes (9) of a second lateral portion (11b) of the piezo element.

    摘要翻译: 特别适用于机动车辆的加速度传感器通过将其构造成易于测试而得到改进,以确保安装前的可靠性。 加速度传感器具有压电元件(1),该压电元件(1)由至少两个放置在彼此顶部的压电板(2)组成,其压电电极化方向相反。 至少两个电极(9)被放置在压电元件(1)的顶侧(7)和下侧(8)的每一个上。 为了测试传感器,压电元件通过对压电元件的第一横向部分(11a)的电极(9)施加电压而变形。 通过压电元件的第二横向部分(11b)的电极(9)处的变形产生的电压来检测该变形。

    Piezoelectric force sensor
    4.
    发明授权
    Piezoelectric force sensor 失效
    压电力传感器

    公开(公告)号:US5499541A

    公开(公告)日:1996-03-19

    申请号:US278667

    申请日:1994-07-21

    IPC分类号: G01L1/18 G01P15/09 G01L25/00

    摘要: A piezoelectric force sensor includes a piezoelectric plate, with one electrode on each of the top and bottom sides of the plate. One of the electrodes is electrically connected via a conductor to a contact pad. In the case that the piezoelectric plate experiences breakage, the conductor is broken, and the remaining residual capacitance of the conductor and contact pad becomes so comparatively small that the breakage can be reliably detected.

    摘要翻译: 压电力传感器包括压电板,在板的顶侧和底侧各有一个电极。 电极中的一个通过导体电连接到接触垫。 在压电板遇到破损的情况下,导体断裂,并且导体和接触焊盘的剩余电容变得相当小,从而可以可靠地检测断裂。

    Sensor with quartz tuning fork
    5.
    发明授权
    Sensor with quartz tuning fork 失效
    传感器带石英音叉

    公开(公告)号:US5531091A

    公开(公告)日:1996-07-02

    申请号:US311076

    申请日:1994-09-23

    CPC分类号: G01C19/5628

    摘要: A sensor device has a quartz tuning fork and an analysis circuit arranged on a common board inside a common housing. The quartz tuning fork has its own, second housing within the common housing for acoustically decoupling the tuning fork from the analysis circuit. The second housing also has an opening for equalizing the pressure and temperature between the second housing and the rest of the common housing. The analysis circuit, which is connected via the electrical wires to the quartz tuning fork, performs linearization, signal amplification and elimination of environmental influences on the signals emitted by the quartz tuning fork. The signals processed by the analysis circuit are further transmitted via common housing's electrical contacts to external elements. Because of the physical proximity of the quartz tuning fork and the analysis circuit, interference attributable to electrical connections between the two elements is minimized. Furthermore, because the tuning fork and the analysis circuit are exposed to the same temperature, temperature-related fluctuations in the electrical signals of the tuning fork may be accurately counter-balanced by the analysis circuit.

    摘要翻译: 传感器装置具有石英音叉和分布电路,该分析电路布置在公共壳体内的公共板上。 石英音叉在公共壳体内具有自己的第二个壳体,用于将音叉与分析电路进行声学去耦。 第二壳体还具有用于平衡第二壳体和公共壳体的其余部分之间的压力和温度的开口。 通过电线连接到石英音叉的分析电路进行线性化,信号放大和消除对石英音叉发出的信号的环境影响。 由分析电路处理的信号通过公共壳体的电触点进一步传输到外部元件。 由于石英音叉和分析电路的物理接近性,两个元件之间的电连接引起的干扰最小化。 此外,由于音叉和分析电路暴露在相同的温度下,音叉的电信号中的温度相关波动可以被分析电路准确地反平衡。

    Device for measuring a flowing air quantity
    7.
    发明授权
    Device for measuring a flowing air quantity 失效
    用于测量流动空气量的装置

    公开(公告)号:US5186051A

    公开(公告)日:1993-02-16

    申请号:US656097

    申请日:1991-02-27

    CPC分类号: G01F1/692 G01F1/684 G01F1/698

    摘要: A device for measuring a flowing air quantity is proposed which comprises a sensor element which is exposed to the flowing air, is constructed in thick-film technology and contains a heating film resistor (R.sub.H), which is arranged on an insulating substrate (10) and through which current flows, and a sensor film resistor (R.sub.S) which is likewise arranged on the insulating substrate (10), serves to sense the temperature of the heating film resistor (R.sub.H) and is a component of a bridge circuit. The heating film resistor (R.sub.H) and the sensor film resistor (R.sub.S), separated from one another by an intermediate film (13) which is a good conductor of heat but is electrically insulating, are accommodated in a bubble (11) which is made of ceramic material, in particular of glass ceramic, and is arched on the insulating substrate (10). The thin diaphragm (14) made of a ceramic material ensures effective thermal uncoupling of the film resistors (R.sub.H, R.sub.S) from the insulating substrate (10). Short response times are thereby achieved.

    摘要翻译: PCT No.PCT / DE89 / 00524 Sec。 371日期1991年2月27日 102(e)1991年2月27日PCT PCT 1989年8月9日PCT公布。 公开号WO90 / 02317 日本1990年3月8日提出了一种用于测量流动空气量的装置,其包括暴露于流动空气的传感器元件,以厚膜技术构成,并且包括加热膜电阻器(RH) 在绝缘基板(10)上流过电流,同时设置在绝缘基板(10)上的传感器膜电阻(RS)用于感测加热膜电阻(RH)的温度,并且是组件 的桥电路。 通过中间膜(13)彼此分离的加热膜电阻器(RH)和传感器膜电阻器(RS),它们是良好的导热体,但是是电绝缘的,被容纳在制成的气泡(11)中 的陶瓷材料,特别是玻璃陶瓷,并且在绝缘基板(10)上拱起。 由陶瓷材料制成的薄膜(14)确保薄膜电阻器(RH,RS)与绝缘衬底(10)的有效热解耦。 从而实现了较短的响应时间。

    Shunting element
    8.
    发明授权
    Shunting element 失效
    分流元件

    公开(公告)号:US4849806A

    公开(公告)日:1989-07-18

    申请号:US154499

    申请日:1988-02-04

    摘要: A shunting element includes two terminal elements for bridging an electrical component, at least one semiconductor component, and at least one electrically conducting layer connecting the semiconductor component to the two terminal elements, the electrically conducting layer being alloyed with the semiconductor component to form a shorting element upon the passage of a current which increases the temperature in the electrically conducting layer and in the semiconductor component to a given value.

    摘要翻译: 分流元件包括用于桥接电气部件,至少一个半导体部件和将半导体部件连接到两个端子元件的至少一个导电层的两个端子元件,导电层与半导体部件合金以形成短路 元件在电流通过时将导电层和半导体部件中的温度增加到给定值。

    Measuring cell for use with a sensor for measuring the mixture ratio of
liquids
    10.
    发明授权
    Measuring cell for use with a sensor for measuring the mixture ratio of liquids 失效
    用于测量液体混合比的传感器的测量单元

    公开(公告)号:US5418465A

    公开(公告)日:1995-05-23

    申请号:US50057

    申请日:1993-06-22

    IPC分类号: G01N27/22 G01N33/28 G01R27/26

    摘要: A sensor for measuring the mixture ratio of liquids, particularly of fuel mixtures, comprises a measuring cell, which has a cavity with one inlet and one outlet. The liquid is directed through the cavity, whereby regions of the inner wall of the cavity are electrically conductive and, together with at least one additional electrically conductive surface, form a capacitor, which is a component of an evaluation circuit. The measuring cell is manufactured from at least two ceramic carriers, which are connected by way of at least one connection layer to form a layer arrangement. The cavity is produced between the ceramic carriers as the result of the lack of at least one connection layer in certain regions. In each case, at least one electrode is applied, in the vicinity of the cavity, to the ceramic carrier delimiting the cavity using thick-film technology.

    摘要翻译: PCT No.PCT / DE91 / 00798 Sec。 371日期:1993年6月22日 102(e)日期1993年6月22日PCT 1991年10月10日PCT PCT。 出版物WO92 / 08126 日期:1992年5月14日。用于测量液体,特别是燃料混合物的混合比的传感器包括具有一个入口和一个出口的空腔的测量池。 液体被引导通过空腔,由此腔的内壁的区域是导电的,并且与至少一个额外的导电表面一起形成作为评估电路的组件的电容器。 测量单元由至少两个陶瓷载体制成,其通过至少一个连接层连接以形成层布置。 由于在某些区域缺少至少一个连接层,在陶瓷载体之间产生空腔。 在每种情况下,至少一个电极在空腔附近施加到使用厚膜技术限定空腔的陶瓷载体上。