CN103427817A - 具有动态调整阈值的接近开关组件 - Google Patents
具有动态调整阈值的接近开关组件 Download PDFInfo
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- H—ELECTRICITY
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- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
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- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/9401—Calibration techniques
- H03K2217/94026—Automatic threshold calibration; e.g. threshold automatically adapts to ambient conditions or follows variation of input
Abstract
本发明提供了启动接近开关的方法。启动接近开关的方法包括感测与接近传感器关联的信号以及感测动态参数的步骤。该方法还包括基于所感测的动态参数调整阈值的步骤。该方法进一步包括基于信号和阈值启动开关的步骤。
Description
技术领域
本发明总的来说涉及开关，更具体地，涉及具有增强型开关启动确定的接近开关。
背景技术
机动车辆通常装备有各种用户可致动开关，诸如用于操控包括电动窗、前照灯、雨刷、天窗、内部照明灯、广播和信息娱乐设备的设备以及各种其它设备的开关。通常，这些类型的开关需要由用户致动以启动或停用某设备或执行某种类型的控制功能。接近开关(诸如电容式开关)采用一个或多个接近传感器来生成感测启动场(sense activation field)并感测表明用户致动开关的启动场的变化，这种变化通常由用户手指接近或接触传感器而引起。电容式开关通常配置成基于感测启动场与阈值的对比来检测用户是否启动开关。
开关组件经常采用多个互相靠近的电容式开关，并通常要求用户选择单个所需电容式开关来执行预期操作。在一些应用中，诸如在汽车中使用开关组件时，驾驶员由于害怕分心而导致查看开关的能力有限。此外，在车辆经历动态运动(诸如在崎岖路面上行驶引起的振动)时，恰当选择所需开关通常会更为困难。在此类应用中，期望允许用户在选择开关或摸索开关组件以寻找特定开关按钮的同时，避免草率地或不经意地决定启动开关。因此，期望能够辨别用户是否意在启动开关，还是在关注更高优先级任务(诸如驾驶)的同时单纯地寻找某个特定开关按钮，抑或是并未打算启动开关。因此，尤其是在车辆经历强烈的动态运动时，期望提供一种可提高人员(如驾驶员)对接近开关的使用的接近开关布局。
发明内容
根据本发明的一个方面，提供了一种启动接近开关的方法。启动接近开关的方法包括感测与接近传感器关联的信号以及感测动态参数的步骤。该方法还包括基于所感测的动态参数调整阈值的步骤。该方法还包括基于信号和阈值启动开关的步骤。
根据本发明的另一方面，提供了一种接近开关组件。该接近开关组件包括多个接近开关，每个接近开关均提供感测启动场。该接近开关还包括控制电路。控制电路处理启动场以感测与接近传感器关联的信号、感测动态参数、基于所感测的动态参数调整阈值并基于信号与阈值启动开关。
本领域的技术人员在研究以下说明书、权利要求和附图之后，将理解本发明的这些和其它方面、目标和特征。
附图说明
在附图中：
图1是根据一个实施例的具有采用接近开关组件的顶置控制台的机动车客厢的立体图；
图2是图1所示顶置控制台和接近开关组件的放大图；
图3是沿图2所示线III-III截取的示出涉及用户手指的接近开关阵列的放大截面图；
图4是应用于图3所示每个电容式开关的电容传感器的示意图；
图5是示出根据一个实施例的接近开关组件的框图；
图6A是示出在正常光滑路面上启动时与接近开关相关联的信号的曲线图；
图6B是示出根据一个实施例基于所调整的阈值与稳定范围在崎岖路况下启动时与接近开关关联的信号的曲线图；
图7A是示出在正常光滑路况上启动时与接近开关关联的信号的曲线图；
图7B是示出根据一个实施例基于所调整的阈值与稳定时间在崎岖路况下启动时与非关键接近开关关联的信号的曲线图；
图7C是示出在崎岖路况下启动时与关键接近开关关联的信号的曲线图；
图8A是示出在正常光滑路面行驶时与两个接近开关关联的信号的曲线图；
图8B是示出根据又一实施例基于信号比在崎岖路况下启动时与两个接近开关关联的信号的曲线图；
图9是示出根据一个或多个动态参数调整接近开关组件的一般方法的框图/流程图；以及
图10是示出根据一个实施例的调整接近开关组件并启动开关的更具体方法的流程图。
具体实施方式
本发明的具体实施例按要求在此公开，然而，应当理解，在此公开的实施例仅为本发明的示例，其能够以各种替代方式实施。附图不一定是具体设计；可对一些图表放大或缩小以显示功能概况。因此，在此公开的具体结构和功能细节不应视为限定，而仅作为用于教导本领域技术人员以各种方式应用本发明的代表性基础。
参照图1和图2，根据一个实施例，机动车10内部通常示出具有车厢和采用多个接近开关22的开关组件20。车辆10通常包括装配至顶盖或顶蓬(位于车厢的顶部)下侧的车顶盖内饰板的顶置控制台12，其通常位于前排乘坐区上方。根据一个实施例，开关组件20具有多个在顶置控制台12中彼此靠近布置的接近开关22。各个接近开关22可控制多种车辆设备和功能中的任一个，如控制天窗16的移动、控制天窗遮板18的移动、控制一个或多个照明设备(如内部地图/阅读灯和顶灯30)的启动、以及控制各种其它设备和功能。然而，应当理解，接近开关22可位于车辆10的其它位置，诸如位于仪表板中、其它控制台(如中控台)上、门上、整合到广播或信息娱乐系统(如导航或音频显示)的触摸屏显示器14中、或者根据不同车辆应用位于车辆10内部的其它位置。
根据一个实施例，在此示出和说明的接近开关22为电容式开关。每个接近开关22都包括至少一个提供感测启动场的接近传感器，感测启动场用于感测用户相对于一个或多个接近传感器的接触或接近(如，1毫米之内)，例如用户手指的敲击动作。因此，在该示例性实施例中，每个接近开关22的感测启动场均为电容场，并且用户的手指具有在感测启动场中引起变化或干扰的导电性和介电性，这些对本领域的技术人员来说是显而易见的。然而，本领域的技术人员还应当理解，可以使用另外或替代类型的接近传感器，例如但不限于电感传感器、光学传感器、温度传感器、电阻式传感器等或上述几种的组合。示例性接近传感器在2009年4月9日的出版号为10620D-AT42-04/09的
Touch Sensors Design Guide(ATMEL触摸传感器设计指南)中已有描述，其全部内容结合于此作为参考。
图1和图2所示的接近开关22均提供对车辆部件或设备的控制或提供指定控制功能。一个或多个接近开关22可用于控制天窗16的移动，以根据控制算法使天窗16沿打开或关闭方向移动、使天窗倾斜或使天窗的移动停止。一个或多个其它接近开关22可用于控制天窗遮板18在打开和关闭位置之间移动。天窗16与遮板18均可响应于相应的接近开关22的开启而由电动机致动。其它接近开关22可用于控制其它设备，如开启或关闭内部地图灯/阅读灯30、开启或关闭顶灯、解锁行李箱，打开后舱或使门灯开关失效。经由接近开关22的其他控制可包括向上和向下致动门电动窗。各种其它车辆控制可通过在此描述的接近开关22进行控制。一些接近开关可指定为关键开关，例如那些用于控制天窗或遮板移动到关闭位置的开关，而其它开关可指定为非关键开关。
参照图3，示出了接近开关组件20的一部分，其具有一组三个串联布置的、彼此紧密相关的接近开关22，它们在开关组件20使用过程中与用户手指34关联。每个接近开关22都包括用于生成感测启动场的一个或多个接近传感器24。接近传感器24可形成在聚合顶置控制台的顶面，其与底侧接触面相对。顶置控制台12的底侧具有每个开关24的接触面。每个开关22还具有位于顶面用于为每个开关22提供背光的照明装置。
根据一个实施例，每个接近传感器24都可通过在聚合顶置控制台12的顶面印制导电油墨来形成。图4中示出印制油墨接近传感器24的一个实例，其通常包括驱动电极26和接收电极28，两个电极均具有生成电容场32的交叉梳状结构。应当理解，每个接近传感器24都可通过其它方式形成，例如，根据其它实施例，在基板上装配预成形的导电电路轨迹。驱动电极26接收以电压VI施加的方波驱动脉冲。接收电极28具有生成输出电压Vo的输出。应当理解，电极26与电极28可以布置为各种其它结构，用于生成如启动场32的电容场。
在本文示出和描述的实施例中，为每个接近传感器24的驱动电极26施加方波脉冲形式的输入电压V1，其具有足够将接收电极28充电至期望电压的充电脉冲循环。接收电极28因此充当测量电极。在所示实施例中，由相邻接近开关22生成的相邻感测启动场32有轻微重叠，然而，根据其它实施例也可以不存在重叠。当用户或操作者(如用户的手指34)进入启动场32时，接近开关组件20检测手指34对启动场32的干扰，并确定这种干扰是否足以启动相应的接近开关22。通过处理与相应信号通道相关的电脉冲信号来检测启动场32的扰动。当用户的手指34接触两个启动场32时，接近开关组件20通过各自的信号通道检测两个接触启动场32的扰动。每个接近开关22都具有自己专用的信号通道，其生成的电脉冲计数以本文讨论的方式进行处理。
参照图5，根据一个实施例示出了接近开关组件20。所示多个接近开关22为控制器(如微控制器)40提供输入。多个接近开关均提供感测启动场。控制器40可包括控制电路，诸如微处理器42和存储器48。控制电路可包括处理每个开关22的启动场信号的感测控制电路，通过比较启动场信号与一个或多个控制程序的一个或多个阈值来感测用户对相应开关的启动。控制电路还感测动态参数，例如与车辆相关的车辆动态参数，并基于感测到的车辆动态参数调整阈值。控制电路进一步基于信号和阈值启动开关。应该想到，也可利用其它模拟和/或数字控制电路来处理每个启动场信号、调整阈值、确定用户启动以及初始化动作。根据一个实施例，控制器40可采用
支持的QMatrix采集方案。ATMEL采集方案利用
主机的C/C++运算器和调试器WinAVR来简化开发并测试多用途鹰眼，其用于实时监控软件中关键变量的内部状态并收集数据日志来用于后处理。
控制器40向被配置成响应于所检测到的接近开关启动而执行专用动作的一个或多个设备提供输出信号。例如，一个或多个设备可以包括：天窗16，具有电机以在开/关位置和倾斜位置之间移动天窗面板；天窗遮板18，在开/关位置之间移动；以及可开启/关闭的照明装置30。也可控制其它设备，诸如用于执行开/关功能的无线电、音量控制、扫描以及用于执行其它专用功能的专用设备。其中一个接近开关22可用于关闭天窗，另一个接近开关22可专用于打开天窗，再一个开关22可用于将天窗驱动到倾斜位置，所有这些都会使电机将天窗移动到期望位置。天窗遮板18可响应于一个接近开关22而打开并响应于另一个接近开关22而关闭。
所示接近开关组件20还包括用作控制器40的输入的一个或多个车辆动态输入50。根据不同实施例，车辆动态输入50可包括车辆加速度52、车辆转向角54、车辆制动56以及车辆振动58中的一个或多个。每个车辆动态输入50均提供表明车辆动态或动作的参数。车辆动态参数可表明崎岖路况，如车辆驶出路面或行驶于崎岖、颠簸路面。当车辆处于崎岖路面时，用户手指启动开关的的稳定性和准确性会不稳定。崎岖路况可基于表明垂直加速度的加速度信号和/或表明车辆上下运动的振动信号确定。车辆动态输入还可表明车辆的其它动态运动，例如突然减速、突然加速和车辆急转弯，在这些运动期间，用户手指启动开关的稳定性和准确性都会变得困难和不稳定。当出现此类事件中的车辆动态运动时，控制电路可调整用于确定接近开关启动的阈值，以增强对开关启动的确定。应当想到，车辆动态输入可包括从加速计或其它专用或共用设备获得的加速度、从车辆转向盘或车轮位置获得的转向角、从车辆制动系统获得的制动信号以及从一个或多个车辆减震器获得的与振动相关的参数。应当想到，根据其它实施例，接近开关组件也可采用其它车辆动态参数。
控制器40被进一步示出具有连接于微处理器42的模数(A/D)比较器44。A/D比较器44接收来自于每个接近开关22的电压输出VO，将模拟信号转换为数字信号，并将数字信号提供给微处理器42。此外，控制器40包括连接于微处理器42的脉冲计数器46。脉冲计数器46对施加于每个接近传感器的每个驱动电极的充电信号脉冲计数，对需要为电容充电直到输出电压VO达到预定电压的脉冲进行计数，以及将计数提供至微处理器42。脉冲计数表明相应的电容传感器中电容的改变。控制器40还被示出与脉宽调制驱动缓冲器15进行通信。控制器40为脉宽调制驱动缓冲器15提供脉宽调制信号，以生成方波脉冲序列VI，其被施加于每个接近开关/传感器22的每个驱动电极。控制器40执行一个或多个控制程序，包括所示存储在存储器中的开关控制程序100和200，以监控各种信号、调整阈值以及对一个接近开关的启动进行确认。
开关控制程序100和200处理各个接近开关并执行启动接近开关的方法，该方法包括基于一个或多个所感测的动态参数调整一个或多个与开关关联的阈值。该方法包括感测与接近传感器关联的信号和感测动态参数的步骤。该方法还包括基于所感测的动态参数调整阈值的步骤。该方法还包括基于信号和阈值启动开关的步骤。根据一个实施例，感测动态参数的步骤可包括感测车辆加速度。根据各种车辆实施例，感测车辆动态参数的步骤可包括感测由车辆制动器、车辆减震器、车辆转向盘中的一个或多个生成的信号。更多动态参数中的一种可表明崎岖路况或车辆经历的其他动态运动。该方法还可确定基本稳定的信号状态并进一步基于基本稳定状态的存在而启动开关。根据一个实施例，如果信号在一段时间(如100毫秒)内基本上为恒定值，则可以检测到基本稳定状态。确定基本稳定状态的时间段和确定稳定范围的信号幅值可被调整为基于车辆动态参数调整阈值的一部分。基本稳定状态可基于稳定时间段的稳定范围。此外，该方法可基于与第一开关关联的第一信号和与相邻的第二开关关联的第二信号比较的信号比来确定信号的启动，并基于该信号比来启动开关。
参照图6A至图8B，根据各种实施例示出了表示为“△传感器计数”的传感器充电脉冲计数变化量，其用于与图1至图5所示接近开关22关联的信号。传感器充电脉冲计数的变化量(△传感器计数)为在启动场中不存在任何手指或其它物体时的初始参考计数值与相应传感器读数之间的差值。在该实例中，当用户的手指在开关上方移动时，用户的手指会进入与接近开关22关联的启动场32。实线60所示的信号为与相应的电容传感器24关联的传感器充电脉冲计数的变化量(△)。在本公开实施例中，接近传感器24为电容传感器。当用户的手指接触或贴近传感器24时，手指改变了相应传感器24中所测得的电容。该电容与未触碰的传感器垫片寄生电容并联，由此测量此电容作为偏移(offset)。用户或操作者所引起的电容与用户的手指或身体其它部分的介电常数和暴露于电容垫片的表面积成正比，与用户的四肢相对于开关按钮的距离成反比。根据一个实施例，每个传感器都受到经过脉宽调制电器件的电压脉冲序列的刺激直到该传感器充电达到设定电势。这种采集方法将接收电极充电至已知电势。重复该循环直至所测量电容器上的电压达到预定值。将用户的手指放在开关22的触摸表面上引入了外部电容，其增加了每个循环转移的电荷量，从而减少了测量电容达到预定电压所要求的总循环数。由于传感器充电脉冲计数的变化量基于初始参考读数与传感器读数之差，所以用户的手指引起该值的增加。
当手(尤其是手指)贴近接近开关22时，接近开关组件20能够识别用户的手部运动，以判别用户的意图为启动开关22、关注于更高优先级任务(如驾驶)的同时寻找特定开关按钮、还是调整后视镜等与致动接近开关22无关的任务造成的结果。接近开关组件20可以在探查或探寻模式下工作，使用户能够通过以极近的距离让手指扫过或滑过开关来寻找接近开关组件22的触摸传感器键盘或按钮而不触发开关的启动，直到用户的意图得以确定。接近开关组件20监控响应每个开关启动场所产生的信号的幅值，监控一个或多个动态输入，基于动态输入调整阈值，对比信号与阈值并基于超过阈值的信号来检测开关的启动。由此，允许在检测到启动状态甚至在经历动态运动时寻找接近开关组件，使得用户可用手指自由地寻找开关界面面板而不会无意间触发事件，界面响应时间很快，启动根据信号变化率而发生，因此可阻止或减少开关的误启动。应当想到，与每个开关关联的信号由接近开关组件20处理，以确定相应开关的启动。
如图6A与6B所示，当用户的手指34滑过开关的接触面时，手指34进入与相应传感器24关联的启动场并引起电容的扰乱，从而如具有启动运动廓线的信号60所示导致“△传感器计数”增加。接近开关组件监控信号60并确定操作者是否打算按下触摸板或按钮来启动当前开关。该系统和方法监控具有很少噪音或者无噪音的信号60何时超过图6A所示标为THO的阈值。该系统和方法还确定信号60是否在定义为CHSO的稳定范围内具有基本稳定值。因此，当由于车辆动态状态而在信号60中仅产生很少噪音或未产生噪音时，该系统和方法将在“△传感器计数”超过阈值THO并基于CHSO在某个最小时间段内基本稳定时确定接近开关的启动。
具体参照图6B，该系统和方法通过监测一个或多个表明崎岖路况的车辆动态参数来检测车辆动态运动，诸如崎岖路况。如图所示，信号60具有由崎岖路况引起的噪音，该噪音通过波动显示。当感测到车辆动态参数(如加速度信号N)时，该系统和方法基于车辆动态参数调整阈值。根据一个实施例，无论何时当由车辆动态运动(如崎岖路况)产生的信号超过阈值时，阈值由THO增加到TH＝kth x THO。此外，当由于车辆动态运动(如崎岖路况)而产生噪音时，稳定范围CHSO增加到定义为CHS＝kch x CHSO的增加范围。因此，由于充分加速或其它动态运动而不会检测到噪音，增加了阈值并增加了稳定范围，以防止在崎岖路况或其他动态运动场景中行驶时对接近开关的误启动。
参照图7A至图7C，图7A示出很少或无噪音情况下感测到很少或无车辆动态时与接近开关关联的信号60，图7B示出针对非关键开关检测到由崎岖路面引起的动态运动时与接近开关关联的信号60，以及图7C示出针对关键开关检测到由崎岖路况引起的车辆动态运动时与接近开关关联的信号60。如图7A所示，当动态运动引起的噪音很少或不存在时，比较信号60与阈值THO以确定是否启动接近开关。对于非关键开关，当感测到动态运动时，阈值减小至Th＝kth x THO，稳定按钮维持时间BHTO减小至BHT＝kbht x BHTO。对于关键开关，当感测到动态运动时，阈值增加为TH>THO，按钮维持稳定时间段增加为BHT>THO。由此，当信号60达到提高后的阈值TH并持续足够的稳定时间BHT时，确定接近开关的启动。应当想到，关键开关可以为具有关键功能且不希望经历误致动的按钮。关键开关的一个实例为开/关天窗或车窗的开关。
参照图8A与8B，根据另一个实施例，提供了与基于当前开关和邻近开关的信号比进行调整的接近阈值关联的信号60。在该实施例中，信号60的接近开关具有幅值AC，其与信号60A代表的相邻开关的幅值NAC形成对比。最大允许信号比(AC/NAC)用于确定与信号60关联的通道的启动。对于非关键开关，信号比(AC/NAC)可增加并用作阈值，从而允许用户启动开关而不必与图8B所示不存在动态运动的情况一样精准地触碰开关。因此，当检测到表明车辆动态运动的信号噪音时，该调整会涉及改变信号比(AC/NAC)。
参照图9，根据一个实施例，示出了用于启动接近开关的程序100，其包括基于车辆动态调整阈值。程序100开始于步骤102，然后进行至步骤104以利用车辆传感器和专用传感器来感测一个或多个车辆动态参数。方法100包括估算车辆动态和路况的步骤106，其可包括估算崎岖路况或车辆机动操纵，如突然加速、突然减速和急转弯等。然后方法100进行至决策步骤108以确定是否存在崎岖路况，如果存在，则在步骤110中修改电容界面(capacitive interface)的启动参数。修改启动参数可包括调整阈值，调整信号比(与相邻开关关联的有效通道与非有效通道的比值)以及调整按钮维持时间或稳定范围。如果在步骤108中未检测到崎岖路况，则程序100进行至步骤112以确定是否检测到机动操纵、转弯、换车道、制动或加速，如果检测到，则在步骤110中修改启动参数。否则，方法100进行至步骤114以确定是否在车辆中使用其它动态相关控制，如果有，则在步骤110中修改启动参数。否则，程序100在步骤116结束。应当想到，一旦修改的启动参数被调整或调节，则该程序可基于调整后的参数确定对接近开关的启动。
参照图10，示出了用于启动接近开关并基于车辆动态参数调整阈值的程序200。程序200开始于步骤202，然后进行至步骤204以获取开关信号通道，然后进行至步骤206以获取一个或多个加速度信号。在该实例中，采用加速度以确定车辆动态。下一步，程序200进行至决策步骤208以确定加速度信号是否大于崎岖路况阈值，如果为否，则重置阈值(TH)、通道稳定范围(CHS)、按钮维持时间(BHT)以及信号比(SR)。如果确定为崎岖路况，则程序200进行至步骤212以将所有开关的ICH设置为ICH＝1。下一步，在决策步骤214中，程序200确定开关ICH安全性是否关键，如果开关ICH安全性并不关键，则程序200进行至步骤216以将乘法因子K(kth、kch、kbht或ksr)应用到阈值(TH)、通道稳定范围(CHS)、按钮维持时间(BHT)以及信号比(SR)中的每一个。用于阈值、按钮维持时间以及信号比中的每一个乘法因子K均小于1，而用于通道稳定范围的K大于1。
如果开关ICH安全性关键，则程序200进行至步骤218，将乘法因子K应用到阈值、通道稳定范围、按钮维持时间以及信号比中的每一个。对这些参数中的任何一个来说，乘法因子K均大于1。相应地，对于关键开关和非关键开关，可采用不同的参数以调整在确定启动接近开关中所使用的参数。方法200包括确定最大通道CH的步骤220、检查启动的步骤222以及在步骤226结束前在步骤224启动开关。
相应地，接近开关组件和方法基于微分高程变化特性引起的差分信号方便地确定接近开关的启动。该系统和方法有利于允许用户寻找接近开关面板，这在避免驾驶员分心的汽车应用中尤其有用。
应该理解，在不背离本发明内容的情况下，可以对上述结构进行变化和修改，并且可以进一步理解，除非另外指定，否则这些内容被权利要求所覆盖。
Claims (20)
1.一种启动接近开关的方法，包括：
感测与接近传感器关联的信号；
感测动态参数；
基于所感测的动态参数调整阈值；以及
基于所述信号与所述阈值启动所述开关。
2.根据权利要求1所述的方法，其中，调整所述阈值的步骤包括：改变与所感测信号进行比较的阈值。
3.根据权利要求2所述的方法，其中，调整所述阈值的步骤包括：在检测到足够的动态动作时增加所述阈值。
4.根据权利要求2所述的方法，还包括：检测稳定信号并进一步基于所检测的稳定信号启动所述开关的步骤。
5.根据权利要求4所述的方法，其中，调整所述阈值的步骤还包括：改变时间段，将所述稳定信号与所述时间段进行比较以确定对所述开关的启动。
6.根据权利要求4所述的方法，其中，调整所述阈值的步骤还包括：改变信号范围，将所述稳定信号与所述信号范围进行比较以确定对所述开关的启动。
7.根据权利要求1所述的方法，其中，调整所述阈值的步骤还包括：确定与第一开关关联的第一信号和与第二开关关联的第二信号的比值，并基于所述比值改变所述阈值。
8.根据权利要求1所述的方法，其中，感测所述动态参数的步骤包括感测车辆的加速度。
9.根据权利要求1所述的方法，其中，感测所述动态参数的步骤包括：感测由车辆制动器、车辆减震器和车辆转向盘之一所生成的信号。
10.根据权利要求1所述的方法，其中，所述开关位于车辆上，并且所感测的动态参数为所述车辆的动态运动。
11.一种接近开关组件，包括：
多个接近开关，每一个均提供感测启动场；以及
控制电路，处理所述启动场以感测与接近传感器关联的信号，感测动态参数，基于所感测的动态参数调整阈值以及基于所述信号与所述阈值启动所述开关。
12.根据权利要求11所述的接近开关组件，其中，调整所述阈值的步骤包括：改变与所感测的信号进行比较的阈值。
13.根据权利要求12所述的接近开关组件，其中，调整所述阈值的步骤包括：在检测到足够的动态动作时增加所述阈值。
14.根据权利要求12所述的接近开关组件，还包括：检测稳定信号以及进一步基于所检测的稳定信号启动所述开关的步骤。
15.根据权利要求14所述的接近开关组件，其中，调整所述阈值的步骤还包括：改变时间段，将所述稳定信号与所述时间段进行比较以确定对所述开关的启动。
16.根据权利要求14所述的接近开关组件，其中，调整所述阈值的步骤还包括：改变信号范围，将所述稳定信号与所述信号范围进行比较以确定对所述开关的启动。
17.根据权利要11所述的接近开关组件，其中，调整所述阈值的步骤包括确定与第一开关关联的第一信号和与第二开关关联的第二信号的比值，并基于所述比值改变所述阈值。
18.根据权利要求11所述的接近开关组件，其中，感测所述动态参数的步骤包括：感测车辆的加速度。
19.根据权利要求11所述的接近开关组件，其中，感测所述车辆动态参数的步骤包括：感测由车辆制动器、车辆减震器和车辆转向盘之一所生成的信号。
20.根据权利要求11所述的接近开关组件，其中，所述开关组件位于所述车辆上，并且所感测的动态参数表明所述车辆的运动。
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-
2012
- 2012-05-17 US US13/473,815 patent/US9136840B2/en active Active
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2013
- 2013-05-14 CN CN201310177950.7A patent/CN103427817B/zh active Active
- 2013-05-15 DE DE102013208938A patent/DE102013208938A1/de active Pending
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| CN106030338B (zh) * | 2014-02-25 | 2019-03-12 | Ifm电子股份有限公司 | 用于根据光-传播时间原则操作光学接近开关的方法 |
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| CN109983701A (zh) * | 2016-11-29 | 2019-07-05 | 法国大陆汽车公司 | 检测在机动车辆门把手附近的用户的手的靠近和/或接触的方法、相关联的电容性传感器和检测模块 |
| CN107728052A (zh) * | 2017-10-31 | 2018-02-23 | 北京航天计量测试技术研究所 | 一种加速度开关阈值精度的自动化测试方法 |
| CN113059986A (zh) * | 2021-02-26 | 2021-07-02 | 精电(河源)显示技术有限公司 | 一种智能高透车载遮阳屏装置 |
| CN113059986B (zh) * | 2021-02-26 | 2022-01-04 | 精电(河源)显示技术有限公司 | 一种智能高透车载遮阳屏装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| US9136840B2 (en) | 2015-09-15 |
| CN103427817B (zh) | 2017-10-27 |
| DE102013208938A1 (de) | 2013-11-21 |
| US20130307610A1 (en) | 2013-11-21 |
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