公开(公告)号：US20130176039A1

公开(公告)日：2013-07-11

申请号：US13701202

申请日：2011-06-08

申请人： Laurent Lamesch

发明人： Laurent Lamesch

IPC分类号： G01R27/26

CPC分类号： G01R27/2605 ,  H03K17/955 ,  H03K2217/960705 ,  H03K2217/960775

摘要： A capacitive sensing circuit is disclosed, wherein the transimpedance amplifier in front of the mixer in prior art is removed respectively replaced by an amplifier with low gain and consequently high dynamic range. The mixer DC offset voltage or current together with the large amplification factor required after the mixer now would result in an inacceptable DC offset at the output of the signal chain. In order to eliminate the effect of the mixer offset, the amplifying stages after the mixer are AC coupled to the mixer output and one of the signals entering the mixer is phase modulated or amplitude modulated with a known low frequency signal. An additional mixer after the AC coupled amplifying stages is driven with the same low frequency modulating signal, resulting in the wanted DC output signal responsive to the capacitance to be measured.

摘要翻译： 公开了一种电容式感测电路，其中现有技术中混频器前面的跨阻抗放大器分别由具有低增益和因此高动态范围的放大器取代。 混频器直流失调电压或电流以及混频器之后所需的大放大系数将导致信号链输出端的不可接受的直流偏移。 为了消除混频器偏移的影响，混频器之后的放大级AC耦合到混频器输出，并且进入混频器的信号之一用已知的低频信号进行相位调制或幅度调制。 在AC耦合放大级之后的附加混频器用相同的低频调制信号驱动，导致有用的DC输出信号响应于要测量的电容。

公开(公告)号：US08041482B2

公开(公告)日：2011-10-18

申请号：US11658938

申请日：2005-07-08

申请人： Laurent Federspiel ,  Yves Decoster ,  Pierre Orlewski ,  Laurent Lamesch

发明人： Laurent Federspiel ,  Yves Decoster ,  Pierre Orlewski ,  Laurent Lamesch

IPC分类号： B60R21/015

CPC分类号： B60R21/01516 ,  B60R21/01526 ,  B60R21/01532 ,  B60R2021/01088

摘要： A seat sensor system including at least one seat sensor associated to a seat for sensing a status related to a seat occupancy and for generating an output signal indicative of the status and a control unit for communicating with the seat sensor. At least one transmitter for transmitting a data signal indicative of the output signal is associated with the seat and coupled to the seat sensor; and at least one receiver is coupled to the control unit for wirelessly receiving the data signal from the transmitter.

摘要翻译： 一种座椅传感器系统，包括至少一个与座椅相关联的座椅传感器，用于感测与座椅占用相关的状态，并且用于产生指示状态的输出信号和用于与座椅传感器通信的控制单元。 用于发送指示输出信号的数据信号的至少一个发射器与座位相关联并且联接到座椅传感器; 并且至少一个接收器耦合到控制单元，用于从发射机无线地接收数据信号。

公开(公告)号：US07924411B2

公开(公告)日：2011-04-12

申请号：US11908917

申请日：2006-03-01

申请人： Laurent Lamesch

发明人： Laurent Lamesch

IPC分类号： G01C3/08

CPC分类号： H04N13/207 ,  H04N13/254

摘要： A 3-D imaging system is described. The 3-D imaging system comprises an illumination unit for emitting light onto a target scene, an imaging sensor for imaging the target scene by detecting scattered/reflected light, an evaluation unit for determining distance information related to the target scene on the basis of light propagation time and synchronization means for providing synchronization information to the evaluation unit. The synchronization means comprises means for generating an electrical reference signal in the illumination unit, the reference signal being directly derived from the emitted light.

摘要翻译： 描述3-D成像系统。 3-D成像系统包括用于将光发射到目标场景的照明单元，用于通过检测散射/反射光来对目标场景进行成像的成像传感器，用于基于光线确定与目标场景相关的距离信息的评估单元 传播时间和同步装置，用于向评估单元提供同步信息。 同步装置包括用于在照明单元中产生电参考信号的装置，参考信号直接从发射光导出。

公开(公告)号：US20100295563A1

公开(公告)日：2010-11-25

申请号：US12676930

申请日：2008-09-09

申请人： Werner Bieck ,  Christian Bour ,  Yves Decoster ,  Guenter Goedert ,  Laurent Lamesch ,  Pierre Orlewski

发明人： Werner Bieck ,  Christian Bour ,  Yves Decoster ,  Guenter Goedert ,  Laurent Lamesch ,  Pierre Orlewski

IPC分类号： G01R27/26

CPC分类号： B60R21/01532 ,  B60N2/002 ,  B60R21/0152

摘要： An occupant detection system comprises an electrode arrangement for placement into a seat of an automotive vehicle and an evaluation circuit operatively connected to the electrode arrangement. The latter includes a first electrode for emitting an electric field into a detection region above the vehicle seat, a second electrode and an electric insulator layer sandwiched between the first and second electrodes. When the electrode arrangement is in place in the seat, the first electrode forms with vehicle ground a first capacitor having a first capacitance, which is influenceable by an occupying item in the detection region through interaction of the occupying item with the electric field, the first electrode forms with the second electrode a second capacitor having a second capacitance and the second electrode forms with at least one of vehicle ground and a third electrode a third capacitor having a third capacitance. As a first indicator of the seat occupancy state, a measure of the first capacitance is determined while the first electrode is caused to emit an electric field into said detection region and the second electrode is operated as a driven shield for the first electrode. The fluctuations of at least one of the first, second and third capacitances are measured and the frequency spectrum of the measured fluctuations is analysed, which yields a second indicator of the occupancy state. The derivation of the occupancy state of the seat is then based on both the first indicator and the second indicator.

摘要翻译： 乘员检测系统包括用于放置在机动车辆的座椅中的电极装置和可操作地连接到电极装置的评估电路。 后者包括用于将电场发射到车辆座椅上方的检测区域中的第一电极，夹在第一和第二电极之间的第二电极和电绝缘体层。 当电极布置在座位中时，第一电极形成具有第一电容的第一电容器，该第一电容器通过占据物品与电场的相互作用而受到检测区域中的占用物品的影响，第一电容器 电极与第二电极形成具有第二电容的第二电容器，并且第二电极与车辆接地和第三电极中的至少一个形成具有第三电容的第三电容器。 作为座椅占有状态的第一指标，在使第一电极向所述检测区域发射电场并且第二电极作为第一电极的驱动屏蔽来确定第一电容的测量。 测量第一，第二和第三电容中的至少一个的波动，并且分析所测量的波动的频谱，其产生占用状态的第二指示符。 然后，基于第一指示符和第二指示符，导出座位的占用状态。

公开(公告)号：US20090135404A1

公开(公告)日：2009-05-28

申请号：US11997046

申请日：2006-07-04

申请人： Laurent Lamesch ,  Jochen Landwehr

发明人： Laurent Lamesch ,  Jochen Landwehr

IPC分类号： G01C3/08

CPC分类号： G01S7/481 ,  G01S7/4863 ,  G01S17/89

摘要： A time-of-flight imager pixel has a light-sensitive region, a first and a second integration gate associated with the light-sensitive region, a first and a second sense node, a first output gate arranged between the first integration gate and the first sense node and a second output gate arranged between the second integration gate and the second sense node, a method for operating such a pixel includesexposing the light-sensitive region to light so as to optically generate charge carriers; collecting the charge carriers alternatively under the first and second integration gates; adjusting voltages of the first and second output gates and the first and second integration gates, thereby transferring a first portion of the charge carriers from the first integration gate into the first sense node and a second portion from the second integration gate into the second sense node; calculating time-of-flight information based on the first and second portions of charge carriers. adjusting at least one voltage so as to transfer, if respectively the first and/or second integration gate is close to or in saturation, an amount of charge carriers form the first and/or second integration gate into the first and/or second sense node; and testing whether a voltage change exceeding a given threshold was thereby provoked in the first and/or second sense node.

摘要翻译： 飞行时间成像器像素具有光敏区域，与感光区域相关联的第一和第二积分门，第一和第二感测节点，布置在第一积分门和第二积分门之间的第一输出门 第一感测节点和布置在第二积分门和第二感测节点之间的第二输出门，用于操作这样的像素的方法包括将光敏区域曝光以便光学地产生电荷载流子; 在第一和第二积分门下交替地收集电荷载流子; 调整所述第一和第二输出门和所述第一和第二积分门的电压，从而将所述电荷载流子的第一部分从所述第一积分门转移到所述第一感测节点，以及将第二部分从所述第二积分门转移到所述第二感测节点 ; 基于电荷载体的第一和第二部分计算飞行时间信息。 调整至少一个电压以便如果分别地第一和/或第二积分门接近或饱和，则电荷载体的量形成第一和/或第二积分门到第一和/或第二感测节点 ; 并且测试在第一和/或第二感测节点中是否引起超过给定阈值的电压变化。

公开(公告)号：US20070299627A1

公开(公告)日：2007-12-27

申请号：US11719995

申请日：2005-11-09

申请人： Laurent Lamesch

发明人： Laurent Lamesch

IPC分类号： G01B11/14

CPC分类号： G01S17/89

摘要： A method for determining a distance value d in a scene from an output of a four-tap 3D imager sensor is disclosed wherein said distance value d is determined based on the charge accumulated in a pixel of said imager sensor during a predetermined integration time Tintg. According to the invention said 5 predetermined integration time Tintg is subdivided into a number of partial integration intervals (T1, T2, T3, T4) and said distance value d is calculated based on the individual tap responses of the four taps at the end of each of said partial integration intervals (T1, T2, T3, T4).

摘要翻译： 公开了一种用于从四抽头3D成像器传感器的输出确定场景中的距离值d的方法，其中所述距离值d基于在预定积分时间Tintg期间在所述成像器传感器的像素中累积的电荷来确定。 根据本发明，所述5个预定积分时间Tintg被细分为多个部分积分间隔（T 1，T 2，T 3，T 4），并且所述距离值d基于四个抽头的各个抽头响应计算 每个所述部分积分间隔（T 1，T 2，T 3，T 4）的结束。

公开(公告)号：US20070034778A1

公开(公告)日：2007-02-15

申请号：US11500266

申请日：2006-08-07

申请人： Felix Lustenberger ,  Thierry Oggier ,  Guido Becker ,  Laurent Lamesch

发明人： Felix Lustenberger ,  Thierry Oggier ,  Guido Becker ,  Laurent Lamesch

IPC分类号： H01L27/00 ,  G01N21/00

CPC分类号： G01S17/36 ,  G01S7/497 ,  G01S17/89

摘要： The method serves for canceling errors caused by mismatch of different signal paths in a photodetector with a plurality (k) of storage elements for the photogenerated signals, as typically used in phase-measurement systems. The signal-capturing process is performed in at least two measurement cycles (j) . A first cycle (j=1) is executed with the conventional setup with no phase delay in the control signals. It is followed by further measurement cycles (j=2, 3, 4) which use control signals shifted by a constant phase shift (90°). Corresponding signals are read out through different signal paths. At the end, the signals corresponding to a certain phase (Φ) are added, thus canceling possible offset values.

摘要翻译： 该方法用于消除由具有用于光生信号的多个（k）个存储元件的光电检测器中不同信号路径引起的误差，如通常在相位测量系统中使用的那样。 信号捕获处理在至少两个测量周期（j）中进行。 第一个周期（j = 1）在传统的设置中执行，在控制信号中没有相位延迟。 随后进一步的测量周期（j = 2,3,4），其使用以恒定相移（90°）移位的控制信号。 相应的信号通过不同的信号路径读出。 最后，添加与特定相位（Phi）对应的信号，从而取消可能的偏移值。

公开(公告)号：US09656575B2

公开(公告)日：2017-05-23

申请号：US14000670

申请日：2012-02-21

申请人： Laurent Lamesch ,  Thomas Meyers

发明人： Laurent Lamesch ,  Thomas Meyers

IPC分类号： B60L1/02 ,  H05B1/00 ,  H05B3/00 ,  H05B11/00 ,  A47C7/72 ,  A47C31/00 ,  B60N2/00 ,  B60N2/56 ,  B60R21/015

CPC分类号： B60N2/002 ,  B60N2/5685 ,  B60R21/01532

摘要： A combined seat heater and capacitive occupancy sensor comprises a heater network including a heating element (11) and a capacitive sensing circuit connected to the heating element to sense a capacitive load. A first and a second interface are provided for connecting the heating element to a first and a second terminal of a power source, respectively. Each interface comprises electronically controlled switches (3, 5; 4, 6) arranged in series and defining an intermediate node (20; 21). An oscillator (8) is AC-coupled to the intermediate nodes to apply an oscillating voltage thereto. A current measuring means (9), AC-coupled between the oscillator and the heating element, keeps the AC-potential of the heating element at least substantially equal, in amplitude and phase, to the oscillating voltage on the intermediate nodes and to derive the capacitive load from a thus resulting current flowing into the heating element.

公开(公告)号：US09285406B2

公开(公告)日：2016-03-15

申请号：US14131367

申请日：2012-06-29

申请人： Laurent Lamesch

发明人： Laurent Lamesch

IPC分类号： G01R27/26 ,  H03K17/955 ,  H03K17/96 ,  G01D5/24

CPC分类号： G01R27/2605 ,  G01D5/24 ,  H03K17/955 ,  H03K17/962 ,  H03K2217/94031

摘要： In an impedance measurement system, a reference impedance (2) to be measured is periodically connected and disconnected by means of switch (3) in parallel to the unknown impedance (1) to be measured. The thus generated amplitude modulation of the measurement current is demodulated, and the amplitude of the demodulated signal is indicative of the reference impedance to be measured. Using a low frequency modulation of the reference impedance enables to measure the impedance of the reference impedance without disconnecting the unknown impedance.

摘要翻译： 在阻抗测量系统中，待测量的参考阻抗（2）通过与要测量的未知阻抗（1）并联的开关（3）周期性地连接和断开。 这样产生的测量电流的幅度调制被解调，并且解调信号的振幅表示要测量的参考阻抗。 使用参考阻抗的低频调制可以测量参考阻抗的阻抗，而不会断开未知阻抗。

公开(公告)号：US07609367B2

公开(公告)日：2009-10-27

申请号：US12066318

申请日：2006-09-01

申请人： Claude Watgen ,  Laurent Lamesch

发明人： Claude Watgen ,  Laurent Lamesch

IPC分类号： G01C3/08

CPC分类号： G01S17/36 ,  G01S17/89

摘要： A method for 3D imaging of an actively illuminated target region includes emitting intensity-modulated light at a variable modulation frequency into the target region, the emitted light is scattered/reflected in the target region depending on the optical properties of the objects or beings present therein, a scattered and/or reflected fraction of the light is detected during an integration time interval by phase-sensitive integration in each pixel of an imaging sensor, the modulation phase between the emitted and the detected light is determined and spatially resolved, and distance information is calculated based on the spatially resolved modulation phase and an average frequency of the modulation frequency.

摘要翻译： 用于主动照射的目标区域的3D成像的方法包括以可变调制频率向目标区域发射强度调制的光，发射的光根据其中存在的物体或物体的光学性质在目标区域中散射/反射 ，在积分时间间隔期间通过成像传感器的每个像素中的相敏积分来检测光的散射和/或反射分数，确定发射光和检测光之间的调制相位并进行空间解析，并且距离信息 是基于空间解析的调制相位和调制频率的平均频率来计算的。