Bragg grating device for measuring an acceleration
    1.
    发明授权
    Bragg grating device for measuring an acceleration 失效
    用于测量加速度的布拉格光栅装置

    公开(公告)号:US06807325B1

    公开(公告)日:2004-10-19

    申请号:US09979345

    申请日:2001-11-20

    IPC分类号: G02B600

    CPC分类号: G01P15/093 G01H9/00

    摘要: The Bragg grating device for measuring an acceleration, has at least two optical Bragg gratings (11, 12), each formed in elastic material, for supplying optical radiation (S) and at least one deflectable mass (M) connected to both gratings for generating an inertial force that is dependent on the acceleration which acts upon the device, in order to produce elastic extension of one of the two gratings and simultaneous elastic contraction of the other grating. The device is also suitable for vibration frequency measurement.

    摘要翻译: 用于测量加速度的布拉格光栅装置具有至少两个光纤布拉格光栅(11,12),每个光纤布拉格光栅(11,12)以弹性材料形成,用于提供连接到两个光栅的光辐射(S)和至少一个可偏转质量块(M),用于产生 取决于作用在装置上的加速度的惯性力,以便产生两个光栅之一的弹性延伸和另一个光栅的同时弹性收缩。 该装置也适用于振动频率测量。

    Method and device for compensating for interfering variables in an optical sensor
    2.
    发明授权
    Method and device for compensating for interfering variables in an optical sensor 失效
    用于补偿光学传感器中的干扰变量的方法和装置

    公开(公告)号:US07064315B2

    公开(公告)日:2006-06-20

    申请号:US10222786

    申请日:2002-08-19

    申请人: Peter Kraemmer

    发明人: Peter Kraemmer

    IPC分类号: G01J5/08 G01D5/36 G02B6/00

    摘要: The method and the device are used for compensating for interfering variables in an optical sensor (50), which is at least sensitive with respect to a measured variable (M), a wavelength (λ) of the optical signal (S1) fed in and an interfering variable (T). The optical signal (S1) also passes through a compensation element (40) which, together with the optical sensor (50), is located in a common interfering variable effect range (60) with the same effect of the interfering variable (T). In the compensation element (40), the interfering variable (T) changes the wavelength of the optical signal (S1) in such a way that the partial influences that take place in the optical sensor (50) on account of the changed wavelength and on account of the interfering variable (T) cancel one another out.

    摘要翻译: 该方法和装置用于补偿对于测量变量(M)至少敏感的光学传感器(50)中的干扰变量,馈入的光信号(S 1)的波长(λ) 和干扰变量(T)。 光信号(S1)也通过补偿元件(40),该补偿元件(40)与光学传感器(50)一起位于具有干扰变量(T)的相同效果的公共干扰可变效应范围(60) 。 在补偿元件(40)中,干扰变量(T)以这样的方式改变光信号(S 1)的波长,使得由于波长变化而在光学传感器(50)中发生的部分影响, 由于干扰变量(T)彼此抵消。

    Method and device for imaging an object using a two-dimensional
ultrasonic array
    3.
    发明授权
    Method and device for imaging an object using a two-dimensional ultrasonic array 失效
    使用二维超声阵列成像物体的方法和装置

    公开(公告)号:US5563346A

    公开(公告)日:1996-10-08

    申请号:US390839

    申请日:1995-02-17

    IPC分类号: G01S15/89 G01N29/26

    摘要: A method and a device for imaging an object using ultrasound. Transducer elements of a two-dimensional array are interconnected to form sub-arrays. The transducer elements of each sub-array are driven in the transmit mode with the same time delay and read out jointly in the receive mode. In this manner, the number of required time delays is reduced, and parasitic capacitances on the signal lines are diminished.

    摘要翻译: 一种使用超声波成像物体的方法和装置。 二维阵列的传感器元件互连形成子阵列。 每个子阵列的换能器元件以相同的时间延迟在发射模式下被驱动,并以接收模式共同读出。 以这种方式,所需的时间延迟的数量减少,并且信号线上的寄生电容减小。

    Ultrasonic transducer array with a reduced number of transducer elements
    4.
    发明授权
    Ultrasonic transducer array with a reduced number of transducer elements 失效
    具有减少数量的换能器元件的超声换能器阵列

    公开(公告)号:US5488956A

    公开(公告)日:1996-02-06

    申请号:US311376

    申请日:1994-09-23

    摘要: An ultrasonic transducer array in which distances between the array's transducer elements (T.sub.ij) increase in the direction of the rows (x direction) and in the direction of the columns (y direction) from a center of symmetry (S) outward. The integral over a straight-line function f(x) and/or g(y), which steeply decreases on either side of a center of symmetry (S) between the center points (M.sub.ij) of adjacent transducer elements (T.sub.ij), is constant for each row and/or column. Thus, the number of transducer elements (T.sub.ij) is reduced without considerable deterioration of the beam characteristic of the transducer array.

    摘要翻译: 超声换能器阵列,其中阵列的换能器元件(Tij)之间的距离沿对称方向(x方向)和从对称中心(S)向外的列(y方向)的方向增加。 在相邻换能器元件(Tij)的中心点(Mij)的对称中心(S)的任一侧上急剧减小的直线函数f(x)和/或g(y)上的积分是 每行和/或列的常数。 因此,换能器元件(Tij)的数量减少而传感器阵列的光束特性不会明显恶化。