公开(公告)号：EP2215440A2

公开(公告)日：2010-08-11

申请号：EP08804899.6

申请日：2008-09-30

申请人： Robert Bosch GmbH

发明人： WOLFMAYR, Holger ,  BENNINI, Fouad ,  MAYER, Thomas ,  WIENSS, Andreas

IPC分类号： G01H11/06

CPC分类号： G01H11/06

摘要： The invention relates to a circuit for a micromechanical structure-borne sound sensor and a method for operating said sensor, wherein voltages are applied by means of a voltage generator to at least one micromechanical element used for detecting structure-borne sound such that a change to the micromechanical element occurs. Furthermore, an evaluation circuit is provided which records and evaluates at least one electrically detectable parameter of the micromechanical element at a certain sampling rate. The at least one parameter is modified as a result of the change. A clock generator is also provided for generating the sampling rate and generating the cycle. A frequency generator is used for at least temporarily generating the cycle for the test operation, wherein the frequency generator generates the cycle as a multiple or as a factor of the sampling rate.

公开(公告)号：EP1836458A1

公开(公告)日：2007-09-26

申请号：EP05815820.5

申请日：2005-12-09

申请人： Robert Bosch GmbH

发明人： SCHWARZ, Hans-Dieter ,  GANGEI, Arnd ,  BAUER, Wolfram ,  WUCHER, Gerhard ,  LANG, Christoph ,  ESCH, Ermin ,  VEITH, Michael ,  MAYER, Thomas ,  BROCKMANN, Markus

IPC分类号： G01C19/56 ,  H03B5/30

CPC分类号： G01C19/56

摘要： The invention relates to an oscillating circuit having an analog oscillating element (SE). The invention is characterized in that the oscillating circuit comprises at least one analog-to-digital converter (A/D). The invention also relates to a method for operating an oscillating circuit wherein a mechanical oscillator (SE) oscillates with a natural frequency. The oscillation amplitude is measured (D1, D2) and digitized (A/D). A digital amplitude regulator (AGC) uses said amplitude to generate a digital feedback signal (210) which in turn is used to generate a drive signal (120) which drives the mechanical oscillator (SE) using a drive (A1, A2). This regulator circuit stabilizes the oscillation amplitude.

公开(公告)号：EP1842031A1

公开(公告)日：2007-10-10

申请号：EP05819152.9

申请日：2005-12-07

申请人： ROBERT BOSCH GMBH

发明人： FRESE, Volker ,  SCHRUELLKAMP, Michael ,  MAYER, Thomas

IPC分类号： G01D1/00

CPC分类号： G01D5/24414 ,  B60R21/01

摘要： The invention relates to a scanning method for an asynchronous sensor (1), according to which sensor data (a) are read out of a sensor element (2) at a scanning rate (t1) and written into an output register (5), and are then read out of the output register (5) at an output transfer rate (t2). According to the invention, a programmable interpolation of at least two scanning values increases the output transfer rate (t2) of the output register (5).

摘要翻译： 采样方法用于异步传感器，其中传感器数据以采样率从传感器元件读出并写入输出寄存器，并随后以输出速率从输出寄存器读出。 输出寄存器的输出速率通过至少两个采样值的可编程内插增加。

公开(公告)号：EP1836458B1

公开(公告)日：2014-02-26

申请号：EP05815820.5

申请日：2005-12-09

申请人： Robert Bosch GmbH

发明人： SCHWARZ, Hans-Dieter ,  GANGEI, Arnd ,  BAUER, Wolfram ,  WUCHER, Gerhard ,  LANG, Christoph ,  ESCH, Ermin ,  VEITH, Michael ,  MAYER, Thomas ,  BROCKMANN, Markus

IPC分类号： G01C19/56 ,  H03B5/30

CPC分类号： G01C19/56