CN100482494C - 用于机动车辆的活动或可拆卸座位 - Google Patents

用于机动车辆的活动或可拆卸座位 Download PDF

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CN100482494C
CN100482494C CNB2004800191874A CN200480019187A CN100482494C CN 100482494 C CN100482494 C CN 100482494C CN B2004800191874 A CNB2004800191874 A CN B2004800191874A CN 200480019187 A CN200480019187 A CN 200480019187A CN 100482494 C CN100482494 C CN 100482494C
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seat
signal
switch
inductor
resonance circuit
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CN1816464A (zh
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R·达拉巴
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Autoliv Development AB
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/48Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
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    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002Seats provided with an occupancy detection means mounted therein or thereon
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    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002Seats provided with an occupancy detection means mounted therein or thereon
    • B60N2/0021Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
    • B60N2/003Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224Non-manual adjustments, e.g. with electrical operation
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60N2/0224Non-manual adjustments, e.g. with electrical operation
    • B60N2/0244Non-manual adjustments, e.g. with electrical operation with logic circuits
    • B60N2/0264Non-manual adjustments, e.g. with electrical operation with logic circuits characterised by the type of electrical connection, e.g. wiring, plugs or USB
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    • B60VEHICLES IN GENERAL
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    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
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    • B60VEHICLES IN GENERAL
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    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512Passenger detection systems
    • B60R21/01544Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment
    • B60R21/01546Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment using belt buckle sensors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/204Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/243Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the phase or frequency of ac
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/04Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2210/00Sensor types, e.g. for passenger detection systems or for controlling seats
    • B60N2210/40Force or pressure sensors
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    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/0104Communication circuits for data transmission
    • B60R2021/01081Transmission medium
    • B60R2021/01088Transmission medium wireless
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    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204Actuation parameters of safety arrangents
    • B60R2021/01252Devices other than bags
    • B60R2021/01265Seat belts
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    • B60VEHICLES IN GENERAL
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    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512Passenger detection systems
    • B60R21/01544Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment
    • B60R21/01548Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment sensing the amount of belt winded on retractor

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Abstract

本发明公开了一种优选采用可拆卸车辆座位(1)形式的用于机动车辆的活动或可拆卸座位。该可拆卸座位结合第一感应器(17),其形成了可拆卸座位和固定在机动车辆上的第二感应器(21)之间的感应耦合的一部分。该第一感应器形成了结合至少一个电容的谐振电路一部分。该谐振电路的谐振频率可以响应于所感应的参数(例如座位头垫的位置、座位背垫的倾斜度等)而发生变化。中心单元(23)可产生激励谐振电路的方波。信号可从谐振电路传输到分析谐振电路的谐振频率的中心单元(23)。

Description

用于机动车辆的活动或可拆卸座位
本发明涉及一种用于机动车辆的活动或可拆卸座位。
目前生产的许多汽车安装有一个或多个可拆卸座位(例如,可拆卸座位)。如果车辆驾驶员例如想携带较大或笨重的货物,可以将座位从汽车上拆下来。同样,车辆安装有活动座位以允许调节座位位置,以及其它活动元件例如用于安全带的上环(pillar-loop)高度调节器。
经常需要车辆座位结合一个或多个用于控制在出现交通事故时向坐在该座位上的人提供保护的安全器件的感应开关。例如,可能需要指示坐在座位上的人存在的重量感应开关。还可能需要感应座位上的人是否使用安全带的带扣开关。从这种开关获得的信号可能是正常控制安全器件(例如,气囊)的调配所必需的。可以提供许多其它类型的开关,以便在非常复杂的情况下感应座位和/或座位上的乘客的相关参数。
如果车辆座位的位置固定不动,各开关可以通过固定配线连接到用于控制车辆内的安全器件调配的中心控制单元。出于诊断目的,最好将电阻与开关并联,以便可以在不关闭开关的情况下不时地检查布线状态。
然而,如果车辆座位是可拆卸座位,不可能在座位内的感应开关和中心控制单元之间使用固定布线。尽管可以提供一种布线配置,该布线配置包括在每一次将座位放置到车内或从车辆拆下时进行连接和断开的连接器,但这种配置不是优选的,因为车辆的使用者可能完全忘记使用这种必要连接。因而,优选使用一种座位内开关状态的相关信息的无接触式传输,例如使用变压器形式的电导耦合。即使车辆座位是传统的可调座位,可以优选在座位和车辆之间使用某种形式的无线连接。对于例如具有高度调节器的上环部件而言,该部件可以具有感应上环高度的传感器,当安装上环时,进行固定配线连接可能很困难,并且在这种上环中对传感器进行无线连接同样是优选的。
此时,需要理解,当如上文所述出于诊断目的,使开关并联设有电阻时,当开关关闭时有效感应到的是电阻变化。电路从高电阻电路(电阻值等于与开关并联的电阻的标称值)变成低电阻电路。
然而,如果在如以变压器形式组成的电路内存在无接触式传输,变压器的耦合系数将影响电路电阻的测量值。例如,当变压器由两部分组成,一个是座位上的部分并且一个是机动车辆上的部分时,耦合系数的实际值可能是无法预测的,并且耦合系数可能相对较低。因而,在座位和中心控制单元之间存在无接触式传输时,很难准确确定机动车辆座位内的开关和电阻的组合电阻。
本发明旨在提供一种改进的用于机动车辆的活动或可拆卸座位。
根据本发明,提供了一种用于机动车辆的可拆卸座位,其中该座位结合第一感应器以便形成单元和固定在汽车上的第二感应器之间的电感耦合的一部分,第一感应器形成结合至少一个电容的谐振电路的一部分,该谐振电路的谐振频率可以响应于感应到的参数而变化。
有利的是,可变参数是高度可调的安全带偏转件的位置。
方便的是,参数是头垫位置。
优选的是,参数是背垫的倾斜度。
有利的是,参数是安全带系统一部分的状态。
方便的是,参数是安全带牵引器的状态。
优选的是,参数是安全带带扣的状态。
有利的是,参数是加在座位座垫上的重量。
方便的是,谐振电路包括至少一个与开关相关联的电容,以便将该电容切换入和切换出电路。
优选的是,座位结合多个各具有相应开关的电容以便使电容能够单独地切换入或切换出电路。
有利的是,谐振电路是被动电路。
方便的是,与车辆结合设置该座位,该车辆设有该第二感应器,以便与该第一感应器协作,以形成无接触式传输,该第二感应器与信号发生器和分析器相关联,以便产生激励信号来激励该谐振电路并分析来自该谐振电路的信号。
优选的是,该谐振电路具有两个取决于开关状态的谐振频率,该信号发生器配置成可产生信号,以便该谐振电路具有为该产生信号的基频的奇次谐波的谐振频率。
有利的是,该信号发生器适于产生多个独立信号,各信号具有为该电路的可能谐振频率的不同频率。
该独立信号可以全部同时产生,但是,方便的是,该信号发生器配置成可产生不同的可能谐振频率的连续信号。
在一实施例中,该信号发生器和分析器配置成可在一段时间间隔内产生信号并在后续时间间隔内分析信号。在一实施例中,该单元配置成可提取受分析信号的平均值并将平均值的位相与信号发生器产生的信号的位相进行比较。
作为备选方案,信号发生器和分析器可配置成同时产生信号并分析信号。
为了可以更容易地理解本发明,并且以便了解本发明的其它特征,现在将通过实例的方式,参照所述附图描述本发明的实施例,在附图中:
图1是车辆座位和部分车辆的示意图;
图2是电路图以及显示根据本发明的一个座位的特征的某些波形;
图3与图2相对应但具有备选波形的示意图;
图4与图2相对应但显示了本发明的修改实施例的示意图;
图5是显示与图4的电路相关的波形的示意图;
图6是显示与图6的电路相关的波形的另一示意图;
图7是显示用于比较的波形的备选示意图;
图8显示了图2、图3和图4的部分电路的修改;
图9与图7相对应地显示另一修改的示意图;
图10与图7相对应地显示另一修改的示意图;以及
图11与图7相对应地显示另一修改的示意图。
首先参照附图的图1,显示了车辆座位1,该座位是可由车辆驾驶员从车辆上拆除并重新安装到机动车辆内的可拆卸座位形式。该座位包括座垫2和背垫3。背垫3可相对座垫2绕轴线4枢轴转动。背垫3带有头垫5。头垫5通过支撑臂6连接到背垫上。可以通过向上以及向下移动支撑臂6调节头垫5的位置。
座位1设有安全带7,安全带7安装在牵引卷轴8上。部分安全带7通过高度可调的上环偏转件9。设有带扣10以便接收设在安全带上的舌状物。
在座位1内提供有各种感应开关。第一感应开关11安装在座位的座垫内并且是重量响应式感应开关。因而,在乘客坐在座位上时该开关关闭。
带扣10结合了当座位安全带舌状物插入带扣10时会关闭的开关12,因而显示座位上的乘客带着座位安全带7。
高度可调上环偏转件9设有以适当方式关闭以便显示上环偏转件的调节高度的感应开关13。背垫3设有响应背垫3相对座垫2的倾斜度的感应开关14。牵引器8设有根据安全带从牵引器拉出长度而关闭的感应开关15。头垫5与根据头垫的移动程度而关闭的感应开关16相关联。
尽管已经参照了许多简单开关,但需要明白,如下文中更详细描述的,许多所描述的开关可由不是提供简单“开-关”输出而是提供逐步增加输出的传感器所取代。
座位1设有感应器17,如下文中描述的,在结合感应器17的电路内设有各种开关和传感器。
图1还显示了安装有座位1的部分机动车辆底板20。底板20上设有与提供在座位上的感应器17协作的感应器21,以便形成在座位和车辆之间延伸的变压器或无接触式传输配置。感应器21通过布线22连接到中心控制单元23上。控制单元23配置成可控制各种安全器件(例如,安全器件24)的调配。
图2示意性显示了车辆和座位内存在的电路,但是为了简单起见,座位内的电路仅包括一个感应开关。
更详细地考虑图2,座位上存在的感应器17形成调谐谐振电路的一部分,该电路包括与感应器17并联的第一电容25,并且还包括串联连接的第二电容26以及与感应器17和第一电容25的组合并联的开关27。因而,取决于开关27打开还是关闭,开关27对将第二电容26切换入谐振电路(如图3所示)以及切换出谐振电路(如图2所示)起作用。
应该理解,图2所示的电路是开关27打开的电路。形成具有由感应器17的感应系数和电容25的电容确定的频率的谐振电路。然而,当开关关闭时,电路具有由感应系数LI和电容25和26的组合确定的第二响应频率。
图2还显示了在机动车辆底板20上提供的感应器21并显示了与感应器21连接的信号处理电路28。信号处理电路28可以直接位于感应器21附近,该电路的输出端与中心控制单元23连接,或者作为备选方案,信号处理电路28形成中心控制单元23的一部分
信号处理电路28结合有信号发生器和信号分析器29。信号发生器和分析器29连同电阻30在电路上与感应器21连接。同样,在电路上与感应器21连接的是脉冲整形器31(例如,施密特触发器电路的形式),连接该脉冲整形器31是为了将感应器21内存在的正弦波转换成方形脉冲波。
信号发生器和分析器29适于产生具有如32所示的频率F0的方波电流信号。该方波以感应方式从感应器21传输到感应器17,并因此激励谐振电路。谐振电路与如33所示的电压频率F5共振。电压曲线几乎是纯正弦波。来自谐振电路的信号从感应器17传输回感应器21。信号从感应器21传送到信号整形电路31。进入信号整形电路的输入34是等于信号33的正弦波电压,但具有在存在多个方波32变化时随时产生的附加波峰。信号33由信号整形电路31整形,以便提供频率F5为方波Fo的五次谐波的方波35。该波35由信号发生器和分析器29分析。
此时,需要注意,在所描述的开关27打开的实施例中,设在车辆座位内的谐振电路的谐振频率是频率F0的五次谐波F5,然而随着开关27关闭(如图3所示),座位内电路的谐振频率是频率F0的三次谐波F3
因而,随着开关27关闭(如图3所示),信号33、34和35的频率都是F3,即最初产生的方波信号32的三次谐波。
因而,需要理解,在图1和图2所示的电路的操作过程中,信号发生器和分析器29将首先产生从感应器21传输到感应器17使谐振电路共振的方波F0。电路将在取决于开关27打开还是关闭的适当频率处共振。如果开关打开(如图2所示),谐振电路在频率F0的五次谐波F5共振。信号将从感应器17传输到感应器21并且该信号将由整形电路31进行整形,并将结果方波送入信号发生器和分析器29。信号发生器和分析器29能够确定接收信号是频率F0的三次谐波(图3)还是五次谐波(图2),并因而能够确定开关27打开还是关闭。
因而,需要知道,所公开的配置能够感应开关的状态,还能进行相关电路的诊断校验。
图4是出于说明目的提供的附图。图4所示的电路与图2所示的电路基本相同,除了提供连接在感应器21、信号发生器和分析器29以及脉冲整形电路31的一端之间的可控开关36。
电路的各点由字母A到D识别。
图5是显示在两个时间间隔T1、T2内在电路操作中点A到点D处存在的波形的示意图。在第一时间间隔T1内,信号发生器和分析器29实际传输信号,并且开关36连接到电阻30,然而在后续时间间隔T2内,信号发生器和分析器29分析信号并且开关36连接到脉冲整形电路31。
首先,如在点A可以看到的,当信号发生器和分析器29产生频率F0的方波输出信号(它是导引到感应器21的信号中的一个)时,存在强方波。在点B(它是固定在座位内的谐振电路的一部分),存在强正弦波。在点C(它是整形电路31的输入),不存在信号,并点D(它是整形电路31的输出),同样不存在信号。在时间T1的末端,开关36的状态改变并且信号发生器和分析器29开始分析函数。在时间T2的开始阶段,在固定在座位上的谐振电路内的点B仍存在强正弦波。然而,该波随时间衰减。该波以感应方式从感应器17耦合到感应器21,并且可以看到,在点A存在也随时间衰减的稍小但不是无法识别的正弦波形。可以看出,由于开关36现在连接到整形电路31的输入端,点C的波形基本与点A的波形相同。整形电路31的输出是便于信号分析器29分析信号的方波形式。
转到图6,可以看出,可以多次完成信号传输和信号分析过程。可以看出,整形电路31在点D产生的方波信号的位相一般与信号发生器和分析器29在点A直接产生的先前信号同相。对操作的n次循环内的连续信号进行平均,并且与初始方波比较,该平均信号与初始方波同相。
在图7中重复相同的过程,但是不存在谐振电路且存在寄生信号。可以看出,平均的分析信号不与初始方波同相。实际上,平均信号略大于"噪音"。因而,信号发生器和分析器29适于将来自整形电路31的接收信号的位相与新近传输的信号的位相进行比较。这种情况有助于识别任何来自外部干扰的寄生信号。
在上述发明的变型中,可以构思出,将信号发生器和分析器29配置为可产生用于谐振电路的每一可能谐振频率的独立波。这些独立波可以连续产生。
尽管已经参照谐振电路的一个特定形式描述了本发明,但需要知道,可以使用许多不同类型的谐振电路。例如,图8显示了感应器17连接到两个电容25,26的串联连接上的修改谐振电路,一个电容26由开关27有效短接。因而,开关27同样允许将电容26切换入或切换出谐振电路。当然,可以使用许多其它谐振电路结构。
到此为止,描述仅集中在一个开关上,然而在图1中显示单个座位可以结合大量开关。图9显示了感应器17连接到结合第一电容25的谐振电路内的电路,并且该谐振电路还包括多个可单独切换的补偿电容,包括具有相关开关41的电容40、具有相关开关43的电容42以及具有相关开关44的电容48。选择电容值,以便不考虑选择的开关的组合就可以获得可以清楚识别的谐振频率。需要理解,在这类电路中可以存在任意数量的电容。
图10显示了感应器17与单个电容45连接的电路,该电容是可变电容。可变电容可以用于代替开关14,例如,通过根据座位靠背的倾斜度调整的电容的电容值。例如,可变电容45还可以用于代替与高度可调上环偏转件9相连的开关13。
图11显示了包括感应器17和电容25并同样包括可变感应器46的谐振电路。可变感应器同样可以用于应提供可变信号的情况
因而,需要理解,在本发明的车辆座位中存在谐振电路,该谐振电路的谐振频率根据车辆座位的状态发生变化。在各实施例中,在座位上提供的谐振电路不具有主动元件。因而,各谐振电路都是被动的。
在本说明书中,“包括”表示包括或包含的意思。

Claims (17)

1.一种用于机动车辆的可拆卸座位,其特征在于,所述座位结合第一感应器(17)以便在所述第一感应器(17)和安装在所述机动车辆上的第二感应器(21)之间形成感应耦合的一部分,所述第一感应器形成结合至少一个电容(25,45)的谐振电路的一部分,所述谐振电路的谐振频率响应于所感应到的参数而变化,所述谐振电路包括至少一个与开关(27)相关联的电容(26),所述开关(27)将所述电容切换入以及切换出所述谐振电路。
2.根据权利要求1所述的座位,其特征在于,所述参数是高度可调的安全带偏转件(9)的位置。
3.根据权利要求1或2所述的座位,其特征在于,所述参数是头垫(5)的位置。
4.根据权利要求1所述的座位,其特征在于,所述参数是背垫(3)的倾斜度。
5.根据权利要求1所述的座位,其特征在于,所述参数是部分安全带系统(7)的状态。
6.根据权利要求5所述的座位,其特征在于,所述参数是安全带牵引器(8)的状态。
7.根据权利要求5所述的座位,其特征在于,所述参数是安全带带扣(10)的状态。
8.根据权利要求1所述的座位,其特征在于,所述参数是加到所述座位(2)的座垫上的重量。
9.根据权利要求1所述的座位,其特征在于,结合多个各具有相应开关的电容(40,42,48),所述开关能够将所述电容单独地切换入以及切换出所述谐振电路。
10.根据权利要求1所述的座位,其特征在于,所述谐振电路是被动电路。
11.根据权利要求1所述的座位,其特征在于,与车辆结合设置所述座位,所述车辆设有所述第二感应器(21),以便与所述第一感应器(17)协作,以形成无接触式传输,所述第二感应器(21)与信号发生器和分析器(29)相关联,以便产生激励信号来激励所述谐振电路并分析来自所述谐振电路的信号。
12.根据权利要求11所述的座位,其特征在于,所述谐振电路具有两个取决于开关(27)状态的谐振频率,所述信号发生器配置成可产生信号,以便所述谐振电路具有为所述产生信号的基频的奇次谐波的谐振频率。
13.根据权利要求11所述的座位,其特征在于,所述信号发生器和分析器(29)适于产生多个独立信号,各信号具有为所述谐振电路的可能谐振频率的不同频率。
14.根据权利要求11所述的座位,其特征在于,所述信号发生器和分析器(29)配置成可产生不同的可能谐振频率的连续信号。
15.根据权利要求11所述的座位,其特征在于,所述信号发生器和分析器(29)配置成可在一段时间间隔内产生信号并在后续时间间隔内分析信号。
16.根据权利要求11所述的座位,其特征在于,所述信号发生器和分析器(29)配置成可同时产生信号并分析信号。
17.根据权利要求15所述座位,其特征在于,所述座位配置成可提取受分析信号的平均值并将所述平均值的位相与由所述信号发生器产生的信号的位相进行比较。
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KR101121158B1 (ko) 2012-03-19
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GB2401467A (en) 2004-11-10
EP1622790B1 (en) 2008-02-20
WO2004098943A1 (en) 2004-11-18
JP4499714B2 (ja) 2010-07-07
JP2006526529A (ja) 2006-11-24
EP1622790A1 (en) 2006-02-08
US20070102999A1 (en) 2007-05-10
GB0310723D0 (en) 2003-06-11
ATE386657T1 (de) 2008-03-15
US8010255B2 (en) 2011-08-30
KR20060009919A (ko) 2006-02-01
DE602004011925D1 (de) 2008-04-03

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