CN102951042A - 使用单个霍尔传感器控制车座位置的方法 - Google Patents

使用单个霍尔传感器控制车座位置的方法 Download PDF

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CN102951042A
CN102951042A CN2011104084924A CN201110408492A CN102951042A CN 102951042 A CN102951042 A CN 102951042A CN 2011104084924 A CN2011104084924 A CN 2011104084924A CN 201110408492 A CN201110408492 A CN 201110408492A CN 102951042 A CN102951042 A CN 102951042A
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CN102951042B (zh
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韩承洙
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Kia Corp
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Abstract

本发明提供了一种使用单个霍尔传感器控制车座位置的方法，包括：当使车座向前或向后移位时响应于电机的旋转而从霍尔传感器输出脉冲；控制电机的旋转使得从霍尔传感器输出的脉冲处于传感器误差状态；检查从霍尔传感器输出的脉冲是否处于传感器误差状态；以及如果在误差状态检查步骤中从霍尔传感器输出的脉冲未处于传感器误差状态，则生成传感器误差。

Description

使用单个霍尔传感器控制车座位置的方法
技术领域
本发明一般涉及使用单个霍尔传感器控制车座位置的方法，其中记忆驾驶者车座或转向柱的位置并且使驾驶位置自动恢复原位。
背景技术
通常，当几个驾驶者共享一辆汽车时，汽车的自动记忆车座具有对各个驾驶者的体形或身材记忆车座的最佳位置的功能，并且具有在驾驶者已经设置车座之后当使用位置控制按钮对记忆装置进行输入时使车座移位到取决于驾驶者体形或身材的位置的功能。
典型地，通过取决于目的而将小型直流(DC)电机安装在滑动机构、倾斜和高度调节机构、或躺椅(recliner)机构上来操作自动车座。具有记忆位置控制功能的自动车座需要检测电机的旋转次数以便控制其位置。为此，使用与电机的旋转轴一起旋转的环形磁铁和行程开关或霍尔传感器。
然而，按照上述方式实现的电机被配置成，仅通过对从霍尔传感器或行程开关产生的脉冲波形进行计数来在电动车座控制单元中仅控制自动车座的位置。因此，无法确定前进操作的方向，诸如滑动的向前和向后运动、倾斜和高度调节的向上和向下运动和/或躺椅的向上和向下运动。因此，为了限制车座的行程，机械地且强行地约束车座的单独的限位开关或止动器必须安装在车座上。
然而，限位开关的安装会增大制造成本，因为限位开关相对昂贵。另外，如果长时间反复进行强制约束，机械地且强行地约束自动车座的止动器可能会损伤电机和车座机构，从而降低自动车座的耐久性。还存在着当止动器约束车座时产生的冲击也可能会使占据者不舒适的问题。
本背景技术部分中公开的信息仅用于加强对本发明的背景的理解，并且不应被看作是对该信息形成了本领域技术人员已知的现有技术的承认或任何形式的暗示。
发明内容
因此，本发明是紧记相关技术中出现的上述问题而做出的，并且本发明旨在提出一种使用单个霍尔传感器控制车座位置的方法，其中将传感器误差忽视区间应用于每个电机的操作区间的末端，使得传感器误差忽视区间内出现的传感器误差被忽视并且当前位置被更新为极限位置。
为了实现上述目的，根据本发明的一个方面，提供了一种使用单个霍尔传感器控制车座位置的方法。该方法包括：当使车座向前或向后移位时响应于电机的旋转而从霍尔传感器输出脉冲；控制电机的旋转使得从霍尔传感器输出的脉冲处于传感器误差状态；检查从霍尔传感器输出的脉冲是否处于传感器误差状态；以及如果在误差状态检查步骤中从霍尔传感器输出的脉冲未处于传感器误差状态，则生成传感器误差。更具体地，传感器误差状态可以限定：从霍尔传感器输出的脉冲在6个脉冲内。
该方法还可以包括：将传感器误差忽视区间应用于电机的操作区间的各个末端；当使车座向前或向后移位时，因为在检查误差状态时没有输出未处于传感器误差状态的脉冲，所以检查当前位置是否处于电机的操作区间之间；以及在当前位置处于传感器误差忽视区间中而不是处于电机的操作区间之间，并且输出了未处于传感器误差状态的脉冲时，通过忽视传感器误差来将当前位置设置为极限位置，并且通过应用预定行程距离来自动地确定相反的极限位置。
根据上面阐述的使用单个霍尔传感器控制车座位置的方法，可以减小电机的霍尔传感器的数目从而降低制造成本，并且可以防止由单个霍尔传感器引起的任何问题从而确保可靠性。另外，可以通过忽视传感器误差忽视区间中的传感器误差来将当前位置更新为极限位置，并通过应用预定行程距离来自动更新相反的极限位置而无需安装限位开关。
附图说明
当结合附图时，根据以下详细说明将会更清楚地理解本发明的上述及其它目的、特征和其它优点，在附图中：
图1是示出根据本发明的示例性实施例的使用单个霍尔传感器控制车座位置的方法的流程图。
具体实施方式
现在将更详细地参考本发明的优选实施例，其实例在附图中示出。只要可能，在所有附图中将始终使用相同的附图标记和描述来指代相同或相似的部分。
应该理解的是，本文中使用的术语“车辆”或“车辆的”或其它类似术语包括一般的机动车辆(诸如包括运动型多功能车(SUV)、公共汽车、卡车、各种商用车辆在内的客车)、包括各种艇和船在内的水运工具、飞行器等，并且包括混合动力车、电动车、插电式混合电动车、氢动力车以及其它代用燃料车(例如从除石油以外的资源中取得的燃料)。如本文中所述，混合动力车是具有两个或更多个动力源的车辆，例如既有汽油动力又有电动力的车辆。
参考附图，将在下面给出根据本发明的实施例的使用单个霍尔传感器控制车座位置的方法的说明。
根据本发明的实施例的使用单个霍尔传感器控制车座位置的方法是使用单个霍尔传感器、取决于电机的旋转来控制车座位置的方法，并且可以包括：脉冲输出步骤S100，即当使车座向前或向后移位时响应于电机的旋转而从霍尔传感器输出脉冲；电机控制步骤S200，即控制电机的旋转，使得从霍尔传感器输出的脉冲处于传感器误差状态；误差状态检查步骤S300，即检查从霍尔传感器输出的脉冲是否处于传感器误差状态；以及传感器误差生成步骤S400，即如果从霍尔传感器输出的脉冲未处于传感器误差状态，则生成传感器误差。
这里，传感器误差状态被设计成控制电机的操作，使得从霍尔传感器输出的脉冲处于6个脉冲内，以便当电机旋转时不会达到操作区间的机械末端。这旨在与进入汽车/从汽车中出来以及与用手动开关操作相配合来控制电机，使得电机在6个脉冲之前停止以便不会达到机械末端。
尽管传感器误差状态被设置使得电机在6个脉冲之前停止，但是在沿相反方向移动期间由于电机停止时重力的惯性而出现累积误差。由于该累积误差，即使电机被设计成在6个脉冲之前关闭，但是仍可能出现大于6个脉冲的误差。于是，生成传感器误差。如果误差状态检查步骤S300中的输出处于传感器误差状态，那么响应于电机的旋转而使车座向前或向后移位。
该方法还包括：操作区间检查步骤S600，即检查当前位置是否处于车座向前或向后移位过程中的电机的某些操作区间之间；传感器误差忽视区间应用步骤S500，即把传感器误差忽视区间应用于安装在每个车座中的电机的某些操作区间的末端；以及极限位置确定步骤S700，即当从传感器误差忽视区间输出了未处于传感器误差状态的脉冲时，通过忽视传感器误差来将当前位置设定为极限位置，并且通过应用预定的行程距离来自动确定相反的极限位置。这使得可以设定电机的操作区间的极限而无需使用限位开关，使得电机的向前或向后运动能够通过在传感器误差忽视区间中确定电机的极限位置而得到控制。
图1是根据本发明的示例性实施例的使用单个霍尔传感器控制车座位置的方法的流程图。在S100中，通过手动开关操作电机进行旋转，从而使车座的位置向前或向后移位，并且霍尔传感器响应于电机的旋转而输出脉冲。在S200中，控制电机的旋转，使得从霍尔传感器以传感器误差状态输出脉冲。此后，执行误差状态检查步骤S300以检查从霍尔传感器输出的脉冲是否处于传感器误差状态。如果在误差状态检查步骤S300中确定输出的脉冲未处于传感器误差状态，那么执行传感器误差生成步骤S400以生成传感器误差。如果输出的脉冲处于传感器误差状态，那么在S410中使车座向前或向后移位。
车座向前或向后移位的范围被限制。为此，在S500中将传感器误差忽视区间应用于电机的操作区间的每个末端。此后，执行步骤S600，检查当前位置是否处于电机的操作区间之间。如果在操作区间检查步骤中确定当前位置处于传感器误差忽视区间中而不是处于电机的操作区间之间，那么在S710中检查是否正在输出未处于传感器误差状态的脉冲。如果没有输出未处于传感器误差状态的脉冲，那么在S740中将当前位置设定为极限位置。如果正在输出未处于传感器误差状态的脉冲，那么在S720中生成传感器误差。当生成传感器误差时，在S730中忽视传感器误差。在S740中将当前位置确定为极限位置，并且通过应用预定行程距离来自动确定相反的极限位置。
因此，可以通过在传感器误差忽视区间中忽视传感器误差来将当前位置设定为极限位置而无需安装限位开关，并且因此可以将车座的移位有效地控制在有限范围内。
尽管出于例证的目的已经描述了本发明的示例性实施例，但是本领域技术人员应该理解的是，可以做出各种修改、添加和替换，而不脱离所附权利要求中所公开的本发明的范围和精神。

Claims (3)

1.一种使用单个霍尔传感器控制车座位置的方法，包括：
当使车座向前或向后移位时响应于电机的旋转而从所述霍尔传感器输出脉冲；
控制所述电机的旋转使得从所述霍尔传感器输出的脉冲处于传感器误差状态；
确定从所述霍尔传感器输出的脉冲是否处于所述传感器误差状态；以及
响应于确定所述霍尔传感器处于所述传感器误差状态，在从所述霍尔传感器输出的脉冲未处于所述传感器误差状态的情况下生成传感器误差。
2.如权利要求1所述的方法，其中所述传感器误差状态限定：从所述霍尔传感器输出的脉冲在6个脉冲内。
3.如权利要求1所述的方法，还包括：
将传感器误差忽视区间应用于电机的操作区间的各个末端；
当使车座向前或向后移位时，因为在确定所述霍尔传感器处于误差状态期间没有输出未处于所述传感器误差状态的脉冲，所以检查当前位置是否处于电机的某些操作区间之间；以及
当所述当前位置处于所述传感器误差忽视区间中而不是处于电机的某些操作区间之间，并且输出了未处于所述传感器误差状态的脉冲时，通过忽视传感器误差来将所述当前位置设置为极限位置，并且通过应用预定行程距离来自动地确定相反的极限位置。
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