公开(公告)号：US09106208B2

公开(公告)日：2015-08-11

申请号：US13928024

申请日：2013-06-26

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Visconti ,  Luciano Prandi ,  Carlo Caminada ,  Paolo Angelini

IPC: H03H11/00 ,  H03H19/00 ,  H03H11/12

CPC classification number: H03H11/126 ,  H03H19/004

Abstract: A band-pass filter made up by an operational amplifier and by an input circuit. The input circuit is formed by a capacitive filtering element, connected to the input of the operational amplifier; a coupling switch, coupled between an input node and the capacitive filtering element; a capacitive sampling element, coupled between the input of the filter and the input node; and a sampling switch, coupled between the input node and a reference-potential line. The coupling switch and the input sampling switch close in phase opposition according to a succession of undesired components sampling and sensing steps, so that the capacitive sampling element forms a sampler for sampling the undesired component in the undesired components sampling step, in the absence of the component of interest, and forms a subtractor of the undesired components from the input signal in the sensing step.

Abstract translation: 由运算放大器和输入电路构成的带通滤波器。 输入电路由电容滤波元件形成，连接到运算放大器的输入端; 耦合开关，耦合在输入节点和电容滤波元件之间; 耦合在滤波器的输入端和输入节点之间的电容性采样元件; 以及耦合在输入节点和参考电位线之间的采样开关。 耦合开关和输入采样开关根据一系列不期望的分量采样和感测步骤接近相位，使得电容采样元件形成采样器，用于在不期望的分量采样步骤中采样不期望的分量，在不存在 并且在感测步骤中从输入信号形成不期望的分量的减法器。

公开(公告)号：US09083338B2

公开(公告)日：2015-07-14

申请号：US13951312

申请日：2013-07-25

Applicant: STMicroelectronics S.r.l.

Inventor： Arber Cauli ,  Luciano Prandi ,  Carlo Caminada

IPC: H03K19/21 ,  H03K19/173 ,  H03K5/1252

CPC classification number: H03K19/173 ,  H03K5/1252

Abstract: A method of protection from noise of a digital signal generated by a comparator, including the steps of generating an output signal that switches from a first logic state to a second logic state at a first switching of logic state of the digital signal; detecting a change from the first logic state to the second logic state of the output signal; and inhibiting further switchings of the output signal for a first time interval after the change from the first logic state to the second logic state.

Abstract translation: 一种防止由比较器产生的数字信号的噪声的方法，包括以下步骤：在数字信号的逻辑状态的第一次切换时产生从第一逻辑状态切换到第二逻辑状态的输出信号; 检测从所述第一逻辑状态到所述输出信号的第二逻辑状态的变化; 以及在从所述第一逻辑状态到所述第二逻辑状态的改变之后，禁止所述输出信号进一步切换第一时间间隔。

公开(公告)号：US08752429B2

公开(公告)日：2014-06-17

申请号：US13739430

申请日：2013-01-11

Applicant: STMicroelectronics S.r.l.

Inventor： Luciano Prandi ,  Carlo Caminada

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5726 ,  G01C19/5762 ,  H03F3/70

Abstract: A MEMS gyroscope includes: a microstructure having a fixed structure, a driving mass, movable with respect to the fixed structure according to a driving axis, and a sensing mass, mechanically coupled to the driving mass so as to be drawn in motion according to the driving axis and movable with respect to the driving mass according to a sensing axis, in response to rotations of the microstructure; and a driving device, for keeping the driving mass in oscillation with a driving frequency. The driving device includes a discrete-time sensing interface, for detecting a position of the driving mass with respect to the driving axis and a control stage for controlling the driving frequency on the basis of the position of the driving mass.

Abstract translation: MEMS陀螺仪包括：具有固定结构的微结构，可根据驱动轴相对于固定结构移动的驱动质量块，以及感测质量块，机械地联接到驱动质量块，以便根据 响应于微结构的旋转，驱动轴线和根据感测轴线可相对于驱动质量块移动; 以及驱动装置，用于保持驱动质量以驱动频率振荡。 驱动装置包括用于检测驱动质量块相对于驱动轴的位置的离散时间感测接口和用于基于驱动质量块的位置来控制驱动频率的控制级。

公开(公告)号：US20130031950A1

公开(公告)日：2013-02-07

申请号：US13648215

申请日：2012-10-09

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Andrea Donadel ,  Tommaso Ungaretti ,  Carlo Caminada ,  Luciano Prandi

IPC: G01C25/00

CPC classification number: G01C19/5776

Abstract: A microelectromechanical gyroscope having a supporting structure; a mass capacitively coupled to the supporting structure and movable with a first degree of freedom and a second degree of freedom, in response to rotations of the supporting structure about an axis; driving components, for keeping the mass in oscillation according to the first degree of freedom; a read interface for detecting transduction signals indicating the capacitive coupling between the mass and the supporting structure; and capacitive compensation modules for modifying the capacitive coupling between the mass and the supporting structure. Calibration components detect systematic errors from the transduction signals and modify the capacitive compensation modules as a function of the transduction signals so as to attenuate the systematic errors.

Abstract translation: 一种具有支撑结构的微电子陀螺仪; 电容耦合到所述支撑结构并且响应于所述支撑结构围绕轴的旋转以第一自由度和第二自由度移动的质量; 驱动部件，用于根据第一自由度保持质量摆动; 用于检测表示所述质量块和所述支撑结构之间的电容耦合的转导信号的读取界面; 以及用于修改质量块和支撑结构之间的电容耦合的电容补偿模块。 校准组件检测来自转导信号的系统误差，并修改电容补偿模块作为转导信号的函数，以便衰减系统误差。

公开(公告)号：US08960001B2

公开(公告)日：2015-02-24

申请号：US13904847

申请日：2013-05-29

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandra Maria Rizzo Piazza Roncoroni ,  Carlo Caminada ,  Luciano Prandi

IPC: G01C19/56 ,  H03B5/30 ,  H03L3/00

CPC classification number: H03B5/30 ,  G01C19/56 ,  H03L3/00

Abstract: A microelectromechanical device includes a body, a movable mass, elastically connected to the body and movable in accordance with a degree of freedom, and a driving device, coupled to the movable mass and configured to maintain the movable mass in oscillation at a steady working frequency in a normal operating mode. The microelectromechanical device moreover includes a start-up device, which is activatable in a start-up operating mode and is configured to compare a current oscillation frequency of a first signal correlated to oscillation of the movable mass with a reference frequency, and for deciding, on the basis of the comparison between the current oscillation frequency and the reference frequency, whether to supply to the movable mass a forcing signal packet so as to transfer energy to the movable mass.

Abstract translation: 微机电装置包括主体，可移动质量体，弹性地连接到主体并且可以根据自由度移动;以及驱动装置，其联接到可移动质量块，并且被配置为将可移动质量块稳定在稳定的工作频率 在正常的操作模式。 微机电装置还包括启动装置，其可以在启动操作模式下激活，并且被配置为将与可移动质量块的振荡相关的第一信号的当前振荡频率与参考频率进行比较， 基于当前振荡频率和参考频率之间的比较，是否向可移动质量块施加强制信号分组，以将能量传递到可移动质量块。

公开(公告)号：US08813565B2

公开(公告)日：2014-08-26

申请号：US13789496

申请日：2013-03-07

Applicant: STMicroelectronics S.R.L.

Inventor： Carlo Caminada ,  Luciano Prandi

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5712

Abstract: A multi-axis gyroscope includes a microelectromechanical structure configured to rotate with respective angular velocities about respective reference axes, and including detection elements, which are sensitive in respective detection directions and generate respective detection quantities as a function of projections of the angular velocities in the detection directions. The gyroscope including a reading circuit that generates electrical output signals, each correlated to a respective one of the angular velocities, as a function of the detection quantities. The reading circuit includes a combination stage that combines electrically with respect to one another electrical quantities correlated to detection quantities generated by detection elements sensitive to detection directions different from one another, so as to take into account a non-zero angle of inclination of the detection directions with respect to the reference axes.

Abstract translation: 多轴陀螺仪包括微机电结构，其被配置为围绕相应的参考轴线以相应的角速度旋转，并且包括在各个检测方向上敏感的检测元件，并且产生作为检测中的角速度的投影的函数的相应检测量 方向。 陀螺仪包括读取电路，其产生电输出信号，每个电流输出信号与各个角速度相关，作为检测量的函数。 读取电路包括组合级，其相对于彼此电连接的电量相关联，所述电量与对于彼此不同的检测方向敏感的检测元件产生的检测量相关联，以便考虑检测的非零倾斜角度 相对于参考轴的方向。

公开(公告)号：US20130307581A1

公开(公告)日：2013-11-21

申请号：US13951312

申请日：2013-07-25

Applicant: STMicroelectronics S.r.l.

Inventor： Arber Cauli ,  Luciano Prandi ,  Carlo Caminada

IPC: H03K19/173

CPC classification number: H03K19/173 ,  H03K5/1252

Abstract: A method of protection from noise of a digital signal generated by a comparator, including the steps of generating an output signal that switches from a first logic state to a second logic state at a first switching of logic state of the digital signal; detecting a change from the first logic state to the second logic state of the output signal; and inhibiting further switchings of the output signal for a first time interval after the change from the first logic state to the second logic state.

Abstract translation: 一种防止由比较器产生的数字信号的噪声的方法，包括以下步骤：在数字信号的逻辑状态的第一次切换时产生从第一逻辑状态切换到第二逻辑状态的输出信号; 检测从所述第一逻辑状态到所述输出信号的第二逻辑状态的变化; 以及在从所述第一逻辑状态到所述第二逻辑状态的改变之后，禁止所述输出信号进一步切换第一时间间隔。

公开(公告)号：US20130118256A1

公开(公告)日：2013-05-16

申请号：US13739430

申请日：2013-01-11

Applicant: STMicroelectronics S.r.l.

Inventor： Luciano Prandi ,  Carlo Caminada

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5726 ,  G01C19/5762 ,  H03F3/70

Abstract: A MEMS gyroscope includes: a microstructure having a fixed structure, a driving mass, movable with respect to the fixed structure according to a driving axis, and a sensing mass, mechanically coupled to the driving mass so as to be drawn in motion according to the driving axis and movable with respect to the driving mass according to a sensing axis, in response to rotations of the microstructure; and a driving device, for keeping the driving mass in oscillation with a driving frequency. The driving device includes a discrete-time sensing interface, for detecting a position of the driving mass with respect to the driving axis and a control stage for controlling the driving frequency on the basis of the position of the driving mass.

Abstract translation: MEMS陀螺仪包括：具有固定结构的微结构，可根据驱动轴相对于固定结构移动的驱动质量块，以及感测质量块，机械地联接到驱动质量块，以便根据 响应于微结构的旋转，驱动轴线和根据感测轴线可相对于驱动质量块移动; 以及驱动装置，用于保持驱动质量以驱动频率振荡。 驱动装置包括用于检测驱动质量块相对于驱动轴的位置的离散时间感测接口和用于基于驱动质量块的位置来控制驱动频率的控制级。

公开(公告)号：US20130033274A1

公开(公告)日：2013-02-07

申请号：US13648218

申请日：2012-10-09

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Andrea Donadel ,  Tommaso Ungaretti ,  Andrea Visconti ,  Carlo Caminada

IPC: G01B7/14 ,  G01R27/26

CPC classification number: G01C19/5712 ,  G01C19/5719

Abstract: A microelectromechanical sensor includes a supporting structure and a sensing mass, which is elastically coupled to the supporting structure, is movable with respect thereto with one degree of freedom in response to movements according to an axis and is coupled to the supporting structure through a capacitive coupling. A sensing device senses, on terminals of the capacitive coupling, transduction signals indicative of displacements of the first sensing mass according to the degree of freedom. The sensing device includes at least one first reading chain, having first operative parameters, one second reading chain, having second operative parameters different from the first operative parameters, and one selective electrical connection structure that couples the first reading chain and the second reading chain to the first terminals.

Abstract translation: 微机电传感器包括支撑结构和弹性耦合到支撑结构的感测块，其响应于根据轴线的运动而具有相对于其自由度移动并通过电容耦合耦合到支撑结构 。 感测装置在电容耦合的端子上感测到根据自由度指示第一感测质量的位移的转导信号。 感测装置包括至少一个第一读取链，其具有第一操作参数，一个第二读取链，具有与第一操作参数不同的第二操作参数，以及将第一阅读链和第二阅读链耦合到一个选择性电连接结构 第一个终端。

公开(公告)号：US09372085B2

公开(公告)日：2016-06-21

申请号：US13648218

申请日：2012-10-09

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Donadel ,  Tommaso Ungaretti ,  Andrea Visconti ,  Carlo Caminada

IPC: G01C19/56 ,  G01C19/5712 ,  G01C19/5719

CPC classification number: G01C19/5712 ,  G01C19/5719

Abstract: A microelectromechanical sensor includes a supporting structure and a sensing mass, which is elastically coupled to the supporting structure, is movable with respect thereto with one degree of freedom in response to movements according to an axis and is coupled to the supporting structure through a capacitive coupling. A sensing device senses, on terminals of the capacitive coupling, transduction signals indicative of displacements of the first sensing mass according to the degree of freedom. The sensing device includes at least one first reading chain, having first operative parameters, one second reading chain, having second operative parameters different from the first operative parameters, and one selective electrical connection structure that couples the first reading chain and the second reading chain to the first terminals.

Abstract translation: 微机电传感器包括支撑结构和弹性耦合到支撑结构的感测块，其响应于根据轴线的运动而具有相对于其自由度移动并通过电容耦合耦合到支撑结构 。 感测装置在电容耦合的端子上感测到根据自由度指示第一感测质量的位移的转导信号。 感测装置包括至少一个第一读取链，其具有第一操作参数，一个第二读取链，具有与第一操作参数不同的第二操作参数，以及将第一阅读链和第二阅读链耦合到一个选择性电连接结构 第一个终端。