公开(公告)号：EP2548762B1

公开(公告)日：2014-01-29

申请号：EP12175832.0

申请日：2012-07-11

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas

IPC分类号： B60N2/00 ,  B60N2/56

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

摘要： A plural-frequency capacitive occupancy sensing system comprises an antenna electrode and a detection circuit. The detection circuit is configured to drive the antenna electrode at least with a first and a second signal at a first and a second frequency, respectively, so as to obtain at least a first and a second measurement value indicative of at least one of conductance, susceptance, resistance, reactance and capacitance between the antenna electrode and a reference node, at the first frequency and the second frequency, respectively. The detection circuit compares the capacitance between the antenna electrode and the reference node with a threshold capacitance, the threshold capacitance being derived from a difference between the first and second measurement values and/or the capacitance between the antenna electrode and the reference node being corrected based upon the difference between the first and second measurement values. The detection circuit outputs an occupancy state signal depending on an outcome of the comparison.

公开(公告)号：EP2572942B1

公开(公告)日：2014-01-29

申请号：EP12183625.8

申请日：2012-09-10

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas ,  Lamesch, Laurent

IPC分类号： B60R21/015 ,  B60N2/56 ,  B62D1/06

CPC分类号： B60R21/015 ,  B60N2/002 ,  B60N2/5685 ,  B60R21/01532 ,  B60R21/0154 ,  B62D1/046 ,  B62D1/065

摘要： A capacitive sensing system for being connected to a heating element (12) comprises a capacitive detector (24) connectable to the heating element and a common mode choke (28) for essentially preventing alternating current from flowing from the heating element to the heating current supply (22). The capacitive detector is configured for driving an alternating current into the heating element and for producing an output indicative of capacitance based upon the alternating current. The choke has a first (30) and a second (32) winding for connecting the heating element with the heating current supply. The choke comprises a third winding (34) connected in parallel of the first and/or second winding. The capacitive detector is configured for measuring a portion of the alternating current flowing across the third winding and for taking into account the measured portion of alternating current when producing the output.

公开(公告)号：EP2353946A1

公开(公告)日：2011-08-10

申请号：EP10152678.8

申请日：2010-02-04

申请人： IEE International Electronics & Engineering S.A.

发明人： Wendt, Christoph ,  Khan, Darren ,  Puetz, Michael ,  Tonteling, Marc ,  Favalli, Gianluca

IPC分类号： B60R21/015 ,  B60N2/00

CPC分类号： B60N2/002 ,  B60R21/01532

摘要： A capacitive occupant detection system (10) comprises a sine signal generator (12) to apply a sine voltage signal to an antenna electrode (14) and a current measurement circuit (18, 20, 28, 30, 40) to measure current signals, based upon which a control and evaluation unit determines and outputs an occupancy state. The signal generator (12) is coupled to the antenna electrode via an amplitude adjustment stage (13), configured to adjust the amplitude of said sine voltage signal applied to said antenna electrode to an amplitude selected among at least two discrete amplitudes. The control and evaluation circuit selects one of the discrete amplitudes at a time and causes the amplitude adjustment stage to adjust the amplitude of said the voltage signal applied to the antenna electrode accordingly. The control and evaluation circuit carries out an interference detection mode and an occupant detection mode. In interference detection mode, the current signals are measured while a low one of the at least two discrete amplitudes is selected and it is determined whether the antenna electrode is exposed to interference. In occupant detection mode, the current signals are measured while a high one of the at least two discrete amplitudes is selected and occupancy state is determined based upon the current signals thus measured.

摘要翻译： 电容乘员检测系统（10）包括正弦信号发生器（12），用于向天线电极（14）和电流测量电路（18,20,28,30,40）施加正弦电压信号以测量电流信号， 基于该控制和评估单元确定并输出占用状态。 信号发生器（12）经由幅度调节级（13）耦合到天线电极，该幅度调节级被配置为将施加到所述天线电极的所述正弦电压信号的振幅调整到从至少两个离散振幅中选择的振幅。 控制和评估电路一次选择一个离散振幅，并使幅度调整级相应地调节施加到天线电极的所述电压信号的幅度。 控制和评估电路执行干扰检测模式和乘员检测模式。 在干扰检测模式中，当选择了至少两个离散幅度中的较低的一个时测量电流信号，并确定天线电极是否暴露于干扰。 在乘员检测模式中，在选择至少两个离散幅度中的高一个时测量电流信号，并且基于如此测量的电流信号来确定占用状态。

公开(公告)号：EP2572942A1

公开(公告)日：2013-03-27

申请号：EP12183625.8

申请日：2012-09-10

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas ,  Lamesch, Laurent

IPC分类号： B60R21/015 ,  B60N2/56 ,  B62D1/06

CPC分类号： B60R21/015 ,  B60N2/002 ,  B60N2/5685 ,  B60R21/01532 ,  B60R21/0154 ,  B62D1/046 ,  B62D1/065

摘要： A capacitive sensing system for being connected to a heating element (12) comprises a capacitive detector (24) connectable to the heating element and a common mode choke (28) for essentially preventing alternating current from flowing from the heating element to the heating current supply (22). The capacitive detector is configured for driving an alternating current into the heating element and for producing an output indicative of capacitance based upon the alternating current. The choke has a first (30) and a second (32) winding for connecting the heating element with the heating current supply. The choke comprises a third winding (34) connected in parallel of the first and/or second winding. The capacitive detector is configured for measuring a portion of the alternating current flowing across the third winding and for taking into account the measured portion of alternating current when producing the output.

摘要翻译： 用于连接到加热元件（12）的电容感测系统包括可连接到加热元件的电容式检测器（24）和用于基本上防止交流电流从加热元件流到加热电流源的共模扼流器（28） （22）。 电容检测器被配置为用于将交流电驱动到加热元件中，并且用于基于交流电产生指示电容的输出。 扼流器具有用于将加热元件与加热电流源连接的第一（30）和第二（32）绕组。 扼流器包括与第一和/或第二绕组并联连接的第三绕组（34）。 电容检测器被配置为测量流过第三绕组的交流电流的一部分，并且在产生输出时考虑测量的交流电流部分。

公开(公告)号：EP2572929A1

公开(公告)日：2013-03-27

申请号：EP12183626.6

申请日：2012-09-10

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas ,  Lamesch, Laurent

IPC分类号： B60N2/56 ,  B60R21/015 ,  B62D1/06

CPC分类号： B62D1/065 ,  B60N2/002 ,  B60N2/5685 ,  B60R21/01532 ,  B60R21/0154 ,  B62D1/046

摘要： A capacitive sensing system (24) for being connected to a heating element (12) producing heat upon electrical current being caused to flow there across comprises a capacitive detector connectable to the heating element and a common mode choke (28) for connecting the heating element with a heating current supply (22). The capacitive detector is configured for driving an alternating current into the heating element and for producing an output depending on the capacitive load, which the alternating current is subject to. Depending on the object to be sensed, the capacitive load is variable in a range between a minimum value and a maximum value. The common mode choke represents an inductive load in parallel of the capacitive load. The capacitive load and the inductive load contribute together to a complex impedance. The inductive load dominates the capacitive load. A compensation capacitor is arranged in parallel of the choke. The compensation capacitor represents an additional capacitive load also contributing to the complex impedance. The compensation capacitor is dimensioned such that the sum of the additional capacitive load and the maximum value amounts to at least 50 % of the inductive load.

摘要翻译： 用于连接到加热元件（12）的电容感测系统（24），其在流过电流时产生热量，包括可连接到加热元件的电容检测器和用于连接加热元件的共模扼流圈（28） 具有加热电流源（22）。 电容检测器被配置用于驱动交流电流到加热元件中，并且用于产生取决于交变电流所承受的电容性负载的输出。 根据要感测的物体，容性负载可以在最小值和最大值之间的范围内变化。 共模扼流圈表示电容负载并联的感性负载。 电容性负载和感性负载共同作用于复阻抗。 电感负载主导电容负载。 补偿电容器与扼流圈平行设置。 补偿电容器表示额外的容性负载，也有助于复阻抗。 补偿电容器的尺寸使得附加电容性负载和最大值之和等于电感负载的至少50％。

公开(公告)号：EP2572943B1

公开(公告)日：2015-09-02

申请号：EP12183627.4

申请日：2012-09-10

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas ,  Lamesch, Laurent

IPC分类号： B60R21/015 ,  B60N2/56

CPC分类号： B60N2/5685 ,  B60N2/002 ,  B60R21/01532 ,  B60R21/0154

摘要： A combined heating and capacitive seat occupant sensing system comprises a common mode choke is configured so as to satisfy at least one of the following conditions: -5% ‰¤ [K REAL (f 1 , f 2 , T)-K REAL (f 1 , f 2 , T REF )]/K REAL (f 1 , f 2 , T REF ) ‰¤ 5%, for any temperature T in the range from -40°C to +150°C, where T REF = 25°C and where the function K REAL (f x , f y , T) is defined as the ratio G(f y , T)/G(f x , T), where G(f x , T) and G(f y , T) is the conductance, at temperature T, of the common mode choke at a frequency f x and f y , respectively; -3% ‰¤ [K IMAG (f 1 , f 2 , T)-K IMAG (f 1 , f 2 , T REF )]/K IMAG (f 1 , f 2 , T REF ) ‰¤ 3%, for any temperature T in the range from -40°C to +150°C, where T REF = 25°C and where the function K IMAG (f x , f y , T) is defined as the ratio L(f y , T)/L(f x , T), where L(f x , T) and L(f y , T) is the inductance, at temperature T, of the common mode choke at a frequency f x and f y , respectively; -20% ‰¤ [”L(f 1 , f 2 , T)-”L(f 1 , f 2 , T REF )]/”L(f 1 , f 2 , T REF ) ‰¤ 20%, for any temperature T in the range from -40°C to +150°C, where T REF = 25°C and where the function ”L(f x , f y , T) is defined as the difference L(f y , T)-L(f x , T), where L(f x , T) and L(f y , T) is the inductance, at a temperature T, of the common mode choke at a frequency f x and f y , respectively.

公开(公告)号：EP2572943A1

公开(公告)日：2013-03-27

申请号：EP12183627.4

申请日：2012-09-10

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas ,  Lamesch, Laurent

IPC分类号： B60R21/015 ,  B60N2/56

CPC分类号： B60N2/5685 ,  B60N2/002 ,  B60R21/01532 ,  B60R21/0154

摘要： A combined heating and capacitive seat occupant sensing system comprises a common mode choke is configured so as to satisfy at least one of the following conditions:
-5% ≤ [K REAL (f 1 , f 2 , T)-K REAL (f 1 , f 2 , T REF )]/K REAL (f 1 , f 2 , T REF ) ≤ 5%, for any temperature T in the range from -40°C to +150°C,
where T REF = 25°C and where the function K REAL (f x , f y , T) is defined as the ratio G(f y , T)/G(f x , T), where G(f x , T) and G(f y , T) is the conductance, at temperature T, of the common mode choke at a frequency f x and f y , respectively;
-3% ≤ [K IMAG (f 1 , f 2 , T)-K IMAG (f 1 , f 2 , T REF )]/K IMAG (f 1 , f 2 , T REF ) ≤ 3%, for any temperature T in the range from -40°C to +150°C,
where T REF = 25°C and where the function K IMAG (f x , f y , T) is defined as the ratio L(f y , T)/L(f x , T), where L(f x , T) and L(f y , T) is the inductance, at temperature T, of the common mode choke at a frequency f x and f y , respectively;
-20% ≤ [ΔL(f 1 , f 2 , T)-ΔL(f 1 , f 2 , T REF )]/ΔL(f 1 , f 2 , T REF ) ≤ 20%, for any temperature T in the range from -40°C to +150°C,
where T REF = 25°C and where the function ΔL(f x , f y , T) is defined as the difference L(f y , T)-L(f x , T), where L(f x , T) and L(f y , T) is the inductance, at a temperature T, of the common mode choke at a frequency f x and f y , respectively.

摘要翻译： 组合的加热和电容座椅乘员感测系统包括共模扼流圈被配置为满足以下条件中的至少一个：-5％‰¤[K REAL（f 1，f 2，T）-K REAL（f 对于-40°C至+ 150°C范围内的任何温度T，其中T REF = 25，其中T = 1，f 2，T REF）] / K REAL（f 1，f 2，T REF） （fx，fy，T）定义为比例G（fy，T）/ G（fx，T），其中G（fx，T）和G（fy，T）是 分别以频率fx和fy分别在共模扼流圈的温度T下的电导率; -3％¤¤[K IMAG（f 1，f 2，T）-K IMAG（f 1，f 2，T REF）] / K IMAG（f 1，f 2，T REF）‰¤3％ 任何温度T在-40℃至+ 150℃的范围内，其中T REF = 25℃，并且功能K IMAG（fx，fy，T）被定义为比率L（fy，T）/ L （fx，T），其中L（fx，T）和L（fy，T）分别是频率fx和fy处共模扼流圈的温度T的电感; -20％‰¤[“L（f 1，f 2，T） - ”L（f 1，f 2，T REF）] /“L（f 1，f 2，T REF）‰¤20％ 任何温度T在-40℃至+ 150℃的范围内，其中T REF = 25℃，其中函数“L（fx，fy，T）”定义为差L（fy，T）-L （fx，T），其中L（fx，T）和L（fy，T）分别是在共模扼流圈的频率fx和fy处的温度T的电感。

公开(公告)号：EP2572929B1

公开(公告)日：2014-03-19

申请号：EP12183626.6

申请日：2012-09-10

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas ,  Lamesch, Laurent

IPC分类号： B60N2/56 ,  B60R21/015 ,  B62D1/06

CPC分类号： B62D1/065 ,  B60N2/002 ,  B60N2/5685 ,  B60R21/01532 ,  B60R21/0154 ,  B62D1/046

公开(公告)号：EP2548762A1

公开(公告)日：2013-01-23

申请号：EP12175832.0

申请日：2012-07-11

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Virnich, Michael ,  Hoyer, David ,  Thinnes, Martin ,  Puetz, Michael ,  Meyers, Thomas

IPC分类号： B60N2/00 ,  B60N2/56

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

摘要： A plural-frequency capacitive occupancy sensing system comprises an antenna electrode and a detection circuit. The detection circuit is configured to drive the antenna electrode at least with a first and a second signal at a first and a second frequency, respectively, so as to obtain at least a first and a second measurement value indicative of at least one of conductance, susceptance, resistance, reactance and capacitance between the antenna electrode and a reference node, at the first frequency and the second frequency, respectively. The detection circuit compares the capacitance between the antenna electrode and the reference node with a threshold capacitance, the threshold capacitance being derived from a difference between the first and second measurement values and/or the capacitance between the antenna electrode and the reference node being corrected based upon the difference between the first and second measurement values. The detection circuit outputs an occupancy state signal depending on an outcome of the comparison.

摘要翻译： 多频电容占用感测系统包括天线电极和检测电路。 检测电路被配置为至少以第一和第二频率的第一和第二信号驱动天线电极，以便获得至少第一和第二测量值，该第一和第二测量值指示电导， 分别在第一频率和第二频率处的天线电极和参考节点之间的电纳，电阻，电抗和电容。 检测电路将天线电极和参考节点之间的电容与阈值电容进行比较，阈值电容由第一和第二测量值之间的差异和/或基于天线电极和参考节点之间的电容进行校正 在第一和第二测量值之间的差异。 检测电路根据比较结果输出占用状态信号。