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    Method for free-fall detection
    1.
    发明专利
    Method for free-fall detection 有权
    自由落体检测方法

    公开(公告)号：JP2007192826A

    公开(公告)日：2007-08-02

    申请号：JP2007010089

    申请日：2007-01-19

    Applicant: St Microelectronics Srl ,  エスティマイクロエレクトロニクス ソシエタ ア レスポンサビリタ リミタータ

    Inventor： LASALANDRA ERNESTO ,  UNGARETTI TOMMASO

    IPC: G01P15/125 ,  G01P15/18

    CPC classification number: G11B19/043 ,  G01P15/0891 ,  G01P15/125 ,  G01P15/131 ,  G01P15/18 ,  G11B21/12

    Abstract: PROBLEM TO BE SOLVED: To provide a free-fall detector device and free fall detection method. SOLUTION: A free-fall detector device comprises an inertial sensor (8), a detection circuit (21) combined with the inertial sensor (8), and a signal source (20) supplying a readout signal to the inertial sensor (8). The device is selectively connected to the detection circuit (21); has an accumulating element (30) which stores a feedback signal (V FBX ) generated from the detection circuit (21), responding to the readout signal which is supplied to the inertial sensor (8); and has feedback circuits (32a, 32b, 24, 36), which supply the feedback signal (V FBX ) to the inertial sensor (8) so as to generate at least one detection signal (V XO ), responding to the feedback signal (V FBX ) supplied to the inertial sensor (8) by the detection circuit (21), connecting to the accumulating element (30). COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：提供自由落体检测装置和自由落体检测方法。 解决方案：自由落体检测器装置包括惯性传感器（8），与惯性传感器（8）组合的检测电路（21）和向惯性传感器提供读出信号的信号源（20） 8）。 该装置选择性地连接到检测电路（21）; 具有存储从所述检测电路（21）产生的反馈信号（V SBX ）的累积元件（30），响应于提供给所述惯性传感器（8）的读出信号。 并具有向惯性传感器（8）提供反馈信号（V SBX ）的反馈电路（32a，32b，24,36），以产生至少一个检测信号（V ），连接到累积元件（30）。 版权所有（C）2007，JPO＆INPIT

    METHOD AND CIRCUIT FOR DETECTING DISPLACEMENT USING MICRO-ELECTROMECHANICAL SENSOR WITH COMPENSATION OF PARASITIC CAPACITANCE AND SPURIOUS DISPLACEMENT
    2.
    发明专利
    METHOD AND CIRCUIT FOR DETECTING DISPLACEMENT USING MICRO-ELECTROMECHANICAL SENSOR WITH COMPENSATION OF PARASITIC CAPACITANCE AND SPURIOUS DISPLACEMENT 审中-公开

    公开(公告)号：JP2003177142A

    公开(公告)日：2003-06-27

    申请号：JP2002208618

    申请日：2002-07-17

    Applicant: ST MICROELECTRONICS SRL ,  HEWLETT PACKARD CO

    Inventor： ERNESTO LASALANDRA ,  UNGARETTI TOMMASO ,  BASCHIROTTO ANDREA

    IPC: G01P21/00 ,  G01P15/125 ,  G01P15/13

    Abstract: PROBLEM TO BE SOLVED: To provide a micro-electromechanical sensor accompanied with compensation of parasitic capacitances and spurious displacements. SOLUTION: In this sensor, a fixed body 3 and a movable mass 4 are connected to a first input terminal 102 of a detection circuit, and one or more first detection capacitors 107 and second detection capacitors 108 connected respectively to a first output terminal 104 and a second output terminal 105 are formed, and a rest common detection capacity Cs is provided. The sensor has a step for closing a first negative feedback loop 136 equipped with the first detection capacitors 107, the second detection capacitors 108 and a differentiating amplifier 124, a step for supplying one or more inputs 124b of the differentiating amplifier 124 with a step detection voltage Vs through driving capacitors 121, 122 in order to generate a variation ΔVc of the electric driving quantity Vc in reverse proportion to the common detection capacity Cs, and a step for driving the sensor 101 by the electric driving quantity Vc. COPYRIGHT: (C)2003,JPO

    Detection circuit, interface circuit, electronic equipment, and reading method for differential capacitive sensor
    3.
    发明专利
    Detection circuit, interface circuit, electronic equipment, and reading method for differential capacitive sensor 有权
    检测电路，接口电路，电子设备和差分电容式传感器的读取方法

    公开(公告)号：JP2007171171A

    公开(公告)日：2007-07-05

    申请号：JP2006320331

    申请日：2006-11-28

    Applicant: St Microelectronics Srl ,  エスティマイクロエレクトロニクス ソシエタ ア レスポンサビリタ リミタータ

    Inventor： UNGARETTI TOMMASO ,  LASALANDRA ERNESTO

    IPC: G01R27/26 ,  G01D5/245 ,  G01L1/14 ,  G01P15/125

    CPC classification number: G01P15/125 ,  G01P15/131

    Abstract: PROBLEM TO BE SOLVED: To provide an interface circuit for a differential capacitive sensor having an input-common-mode control circuit.
    SOLUTION: This interface circuit 30 of a detection circuit is provided with a detection amplifier 12 connected to the first and second detection inputs 7a, 7b in an input, and for supplying an output signal Vo related to capacity unbalancing ▵Cs of an operation capacitive sensor 1, and the common-mode control circuit 32 connected to the first and second detection inputs 7a, 7b, and for controlling common-mode electricity quantities appearing in the first and second detection inputs 7a, 7b. The common-mode control circuit 32 is a complete passive type, and is provided with capacitive circuits 34, 35 substantially identical to an equivalent electrical circuit of the differential capacitive sensor 1 and driven by a driving signal Vr(-) in phase opposition with respect to a read signal Vr supplied to the differential capacitive sensor.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：提供具有输入共模控制电路的差分电容传感器的接口电路。 解决方案：检测电路的该接口电路30设置有在输入端连接到第一和第二检测输入7a，7b的检测放大器12，并且用于提供与不平衡的电容器 连接到第一和第二检测输入7a，7b的共模控制电路32，以及用于控制出现在第一和第二检测输入7a，7b中的共模电量。 共模控制电路32是完全无源型的，并且设置有与差动电容式传感器1的等效电路基本相同的驱动信号Vr（ - ）的电容电路34,35相对于 提供给差分电容传感器的读取信号Vr。 版权所有（C）2007，JPO＆INPIT

    System and method for especially reading microelectromechanical form capacitive sensor
    4.
    发明专利
    System and method for especially reading microelectromechanical form capacitive sensor 有权
    用于特殊读取微电子电容式电容式传感器的系统和方法

    公开(公告)号：JP2007155729A

    公开(公告)日：2007-06-21

    申请号：JP2006326075

    申请日：2006-12-01

    Applicant: St Microelectronics Srl ,  エスティマイクロエレクトロニクス ソシエタ ア レスポンサビリタ リミタータ

    Inventor： UNGARETTI TOMMASO ,  LASALANDRA ERNESTO

    IPC: G01P15/125

    CPC classification number: G01P15/125

    Abstract: PROBLEM TO BE SOLVED: To provide a system and a method for reading microelectromechanical form capacitive sensor which can solve conventional problems.
    SOLUTION: The reader unit of the capacitive sensor has both signal generation sources (104, C1, C2) which supply electric reading signal (V
    RD ) for driving the capacitive sensor (101), and discrete time sensing circuit (107) which generates electrical output signal (V
    OM ) associated with capacity change (ΔC
    S ) of the capacitive sensor (101) in response to variation of the electric reading signal (V
    RD ). The unit further has modulator stage (105, 106) which generates modulated electric reading signal (V
    RDM ) from the electric reading signal (V
    RD ) to be supplied to the capacitive sensor (101), demodulator stage (110) connected with the sensing circuit (107) to demodulate the electrical output signal (V
    OM ) and generate the demodulated electrical output signal (V
    OD ), and low-pass filter processing stage (112) which generates filtered electrical output signal (V
    OC ) from the above demodulated electrical output signal (V
    OD ).
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种能够解决常规问题的微机电形式电容式传感器的读取系统和方法。 电容式传感器的读取单元具有提供用于驱动电容传感器（101）的电读取信号（V RD ）的信号发生源（104，C1，C2），以及 离散时间感测电路（107）响应于电容传感器（101）的变化而产生与电容传感器（101）的容量变化（ΔC S ）相关联的电输出信号（V SB> 电读取信号（V RD ）。 该单元还具有调制级（105,106），该调制器级从电读取信号（V SB> RD SB）产生调制电读取信号（V SB SBR），以提供给电容 传感器（101），与感测电路（107）连接的解调器级（110），以解调电输出信号（V OM ）并产生解调的电输出信号（V < SB>）和低通滤波处理级（112），其从上述解调的电输出信号（V OD ）产生滤波后的电输出信号（V OC ）。 版权所有（C）2007，JPO＆INPIT

    5.
    发明专利
    未知

    公开(公告)号：ITTO20010157A1

    公开(公告)日：2002-08-21

    申请号：ITTO20010157

    申请日：2001-02-21

    Applicant: ST MICROELECTRONICS SRL

    Inventor： BASCHIROTTO ANDREA ,  LASALANDRA ERNESTO ,  UNGARETTI TOMMASO

    IPC: G01P15/125 ,  G01R27/26

    Abstract: Method for detecting movements through a micro-electric-mechanical sensor, having a fixed body and a moving mass, forming at least one first and one second detection capacitor, connected to a common node and to a first, respectively a second detection node and having a common detection capacitance at rest and a capacitive unbalance in case of a movement. The method includes the steps of: feeding the common node with a constant detection voltage of predetermined duration; generating a feedback voltage to maintain the first and the second detection node at a constant common mode voltage; generating a compensation electric quantity, inversely proportional to the common detection capacitance at least in one predetermined range; supplying the compensating electric quantity to the common node; and detecting an output quantity related to the capacitive unbalance.

    7.
    发明专利
    未知

    公开(公告)号：DE60236055D1

    公开(公告)日：2010-06-02

    申请号：DE60236055

    申请日：2002-07-16

    Applicant: HEWLETT PACKARD CO ,  ST MICROELECTRONICS SRL

    Inventor： LASALANDRA ERNESTO ,  UNGARETTI TOMMASO ,  BASCHIROTTO ANDREA

    IPC: G01P15/125 ,  G01P21/00 ,  G01D5/24 ,  G01P15/13 ,  G01R27/26

    Abstract: A method for detecting displacements of a micro-electromechanical sensor (101) including a fixed body (3) and a mobile mass (4), forming at least a first sensing capacitor (107) and a second sensing capacitor (108), which are connected to a first input terminal (102) and, respectively, to a first output terminal (104) and to a second output terminal (105) of the sensing circuit and have a rest common sensing capacitance (Cs). The method includes the steps of: closing a first negative-feedback loop (136), which comprises the first sensing capacitor (107) and the second sensing capacitor (108) and a differential amplifier (124); supplying to at least one input (124b) of the differential amplifier (124) a staircase sensing voltage (Vs) through driving capacitors (121, 122) so as to produce variations ( DELTA Vc) of an electrical driving quantity (Vc) which are inversely proportional to the common sensing capacitance (Cs); and driving the sensor (101) with the electrical driving quantity (Vc) .

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