Rotary speed sensor with Hall generator responding to tangential
component of magnetic field
    1.
    发明授权
    Rotary speed sensor with Hall generator responding to tangential component of magnetic field 失效
    具有霍尔发生器的旋转速度传感器响应于磁场的切向分量

    公开(公告)号:US4481469A

    公开(公告)日:1984-11-06

    申请号:US377026

    申请日:1982-05-11

    CPC分类号: G01P3/488 G01P3/487

    摘要: To determine the rotary speed of a toothed element (1), for example the starter gear of an internal combustion (IC) engine, or a toothed wheel coupled to a wheel of a vehicle for evaluation of the speed, and change in speed thereof, for use in a brake anti-block system, a magnetic field is generated, for example by a permanent magnet (3) which has both radial and tangential components with respect to the teeth (2) of the rotary element. A magnetic field dependent sensor (4) such as a Hall generator or a thin-film permalloy-type magneto-resistive sensor is positioned to respond to the tangential component of the magnetic field, to thereby eliminate shifts in the null or center line about which the field strength undulates as the disk rotates to permit ready evaluation of the output from the sensor by threshold circuitry.

    摘要翻译: 为了确定齿形元件(1)的转速,例如内燃(IC)发动机的起动齿轮或耦合到用于评估速度的车辆车轮的齿轮及其速度变化, 为了在制动防块系统中使用,例如通过相对于旋转元件的齿(2)具有径向和切向分量的永磁体(3)产生磁场。 位于磁场相关传感器(4),例如霍尔发生器或薄膜坡莫合金型磁阻传感器被定位成响应于磁场的切向分量,从而消除零线或中心线的偏移, 当磁盘旋转时,磁场强度波动,以允许通过阈值电路准备好评估传感器的输出。

    Circuit arrangement for transmitting measurement values on vehicle wheels
    3.
    发明授权
    Circuit arrangement for transmitting measurement values on vehicle wheels 失效
    用于在车轮上传输测量值的电路装置

    公开(公告)号:US4891973A

    公开(公告)日:1990-01-09

    申请号:US221464

    申请日:1988-06-09

    摘要: A circuit arrangement for transmitting variable measurement values, such as pressure and temperature, at vehicle wheels is provided which transmits the measurement values in the form of H-F signals to a stationary evaluating circuit (12) with great accuracy, high reliability and in short time intervals. A repeater coil (b 13), which is connected with the latter, arranged in the vicinity of the wheel so as to be stationary and connected to voltage by a square-wave generator (15), cooperates with a revolving repeated coil (19) which is fastened at the vehicle wheel and connected with a sensor circuit arrangement (20) supplied by it. The sensor circuit arrangement (20) contains a timing element (29) which responds to a voltage peak in the revolving repeater coil (19 l) at the end of a voltage pulse of the square-wave generator (15) and, with a corresponding delay, triggers a timing circuit (30) for transmitting the measurement values, which timing circuit (30) is connected with it on the output side, wherein the delay time of the timing element (29), together with the duty cycle of the timing circuit (30), is shorter than the pause time of the square-wave voltage at the square-wave generator (15).

    摘要翻译: PCT No.PCT / DE86 / 00523 Sec。 371日期:1988年6月9日 102(e)日期1988年6月9日PCT提交1986年12月24日PCT公布。 公开号WO87 / 04123 日本1987年7月16日。提供一种用于在车轮上传输诸如压力和温度的可变测量值的电路装置,其以高精度信号将测量值以HF信号的形式发送到静态评估电路(12) 高可靠性和短时间间隔。 与车轮相邻的中继器线圈(b 13)与方形波发生器(15)一起被固定并连接到电压,与旋转重复线圈(19)配合, 其被紧固在车轮上并且与由其提供的传感器电路装置(20)连接。 传感器电路装置(20)包含响应于方波发生器(15)的电压脉冲结束时的旋转中继器线圈(19l)中的电压峰值的定时元件(29),并且具有相应的 触发用于发送测量值的定时电路(30),该定时电路(30)在输出侧与其连接,其中定时元件(29)的延迟时间与定时的占空比 电路(30)比方波发生器(15)的方波电压的暂停时间短。

    Gear tooth position and speed sensor with four, bridge circuit
connected, magnetic resistance tracks
    5.
    发明授权
    Gear tooth position and speed sensor with four, bridge circuit connected, magnetic resistance tracks 失效
    齿轮位置和速度传感器四个,桥接电路连接,磁阻轨道

    公开(公告)号:US4506217A

    公开(公告)日:1985-03-19

    申请号:US398650

    申请日:1982-07-15

    CPC分类号: G01P3/488

    摘要: To simplify a field plate effect speed and position sensor, particularly for association with the starter gear of an automotive-type internal combustion engine, four meander-arranged permalloy resistance tracks are located on a substrate at the corners of a rectangle, spaced, in circumferential direction, by about half the pitch distance of the teeth (2) of the starter gear. The resistances can be connected in a voltage divider (FIG. 4) configuration, or in form of a bridge circuit (FIG. 5) supplied from a constant current source (CC) to eliminate temperature variation affects, and providing alternating current output voltages within the wide range of temperature of essentially uniform level as the teeth (2) scan the sensor, a special marker tooth (10) providing an output signal of different level. Preferably, the resistances (5-8) are formed as meander-shaped thin film vapor deposited tracks on a silicon substrate (4), a permanent magnet (9) providing bias magnetization, the direction of which changes with respect to the orientation of the meander tracks--preferably 45.degree. with respect to the direction of rotation (11) to cause the resistance elements to either have high, or low resistances (FIG. 3).

    摘要翻译: 为了简化场板效应速度和位置传感器,特别是对于与汽车内燃机的起动装置相关联,四个弯曲排列的坡莫合金电阻轨道位于矩形的角落处的基底上,周向间隔开 方向,大约是起动齿轮齿(2)的间距距离的大约一半。 电阻可以以分压器(图4)的配置或由恒流源(CC)提供的桥接电路(图5)的形式连接,以消除温度变化影响,并且提供交流输出电压 牙齿(2)扫描传感器时具有基本均匀水平的宽范围的温度,特殊标记齿(10)提供不同水平的输出信号。 优选地,电阻(5-8)形成为硅衬底(4)上的曲折形薄膜气相沉积轨道,提供偏置磁化的永磁体(9),其方向相对于 曲折轨迹 - 优选相对于旋转方向(11)为45°,以使电阻元件具有高或低电阻(图3)。