WO2022199101A1 - 一种智能钥匙在手机干扰情况下的定位判断系统及方法 - Google Patents

一种智能钥匙在手机干扰情况下的定位判断系统及方法 Download PDF

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WO2022199101A1
WO2022199101A1 PCT/CN2021/134292 CN2021134292W WO2022199101A1 WO 2022199101 A1 WO2022199101 A1 WO 2022199101A1 CN 2021134292 W CN2021134292 W CN 2021134292W WO 2022199101 A1 WO2022199101 A1 WO 2022199101A1
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antenna
smart key
field strength
body controller
trunk
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PCT/CN2021/134292
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English (en)
French (fr)
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李溪
李志刚
曹晶
王健
李宽
张海波
李雨龙
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一汽奔腾轿车有限公司
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Publication of WO2022199101A1 publication Critical patent/WO2022199101A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role

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  • the invention belongs to the technical field of automobiles, and in particular relates to a method for judging the position of a smart key, in particular to a system and method for judging the positioning of a smart key in the case of mobile phone interference.
  • the purpose of the present invention is to provide a positioning judgment system of a smart key under the interference of a mobile phone, and a positioning judgment method of a smart key under the interference of a mobile phone, so as to solve the problem that the smart key can be accurately positioned under the interference of the mobile phone .
  • a positioning judgment system for a smart key in the case of mobile phone interference is composed of a smart key 1 , a remote control receiver 2 , a body controller 3 and an antenna 4 .
  • the smart key 1 communicates with the remote control receiver 2 through high-frequency wireless signals; the remote control receiver 2 and the body controller 3 are connected through a wire harness; the body controller 3 and the antenna 4 are connected through a wire harness; The smart key 1 communicates through low-frequency wireless signals.
  • the smart key 1 is used for receiving and feeding back low-frequency signal field strength values
  • the remote control receiver 2 is used to receive the high-frequency signal fed back by the smart key 1 and output it to the body controller 3;
  • the body controller 3 is used to drive the antenna 4 to send out a low frequency signal, and judge the position of the smart key 1 according to the field strength value signal of the smart key 1 input by the remote control receiver 2 .
  • a method for locating and judging a smart key in the case of mobile phone interference comprising the following steps:
  • the whole vehicle has 4 antennas 4, which are trunk antenna 4, indoor antenna 4, left antenna 4 and right antenna 4.
  • the body controller 3 drives the 4 antennas 4 of the whole vehicle in turn to send field strength values. After the key 1 receives the field strength value of the antenna 4, it feeds back to the remote control receiver 2 and transmits it to the body controller 3;
  • the body controller 3 judges the position of the smart key 1. If the field strength value of the trunk antenna 4 is greater than the set field strength value of the trunk antenna 4 when it is identified as being outside the trunk, at the same time, the field strength value of the trunk antenna 4 is greater than When the field strength value of the indoor antenna 4 is fed back near the trunk, it can be judged that the smart key 1 is outside the trunk;
  • the smart key 1 sends the field strength values of the trunk antenna 4, the indoor antenna 4, the left antenna 4 and the right antenna 4 to the body controller 3. After the body controller 3 receives it, it will not bounce back when the trunk is closed. .
  • step A the trunk antenna 4 , the indoor antenna 4 , the left antenna 4 and the right antenna 4 are respectively connected to the body controller 3 through wire harnesses.
  • step A2 the field strength value is greater than 30 when there is mobile phone interference.
  • step B the set identification is that the field strength value of the trunk antenna 4 is greater than 200 when it is outside the trunk.
  • step C the field strength value of the indoor antenna 4 is 28.
  • step C the field strength values of the left antenna 4 and the right antenna 4 are 30.
  • the smart key 1 communicates with the remote control receiver 2 through high-frequency wireless signals; the remote control receiver 2 and the body controller 3 are connected through a wire harness; the body controller 3 and the antenna 4 are connected through a wire harness; the The antenna 4 communicates with the smart key 1 through low-frequency wireless signals.
  • the positioning judgment system of the smart key in the case of mobile phone interference of the present invention has a simple structure, and the positioning judgment method uses the smart key to detect the interference of the mobile phone. /Left antenna/Right antenna smaller field strength value. At this time, BCM will judge that the key is outside the car, and it will not cause false triggering of the luggage lock. It can improve the accurate positioning of the smart key in the case of mobile phone interference. It can significantly improve user satisfaction in terms of perception.
  • Fig. 1 is a structural diagram of the positioning judgment system of the smart key of the present invention in the case of mobile phone interference.
  • the method for judging the positioning of the smart key in the case of mobile phone interference of the present invention is to detect the interference of the mobile phone by the smart key 1.
  • a space field interference is detected, it is judged that the smart key 1 is near the luggage compartment, and feedback indoors Antenna 4, left antenna 4 and right antenna 4 are all small field strength values.
  • the body controller 3 will judge that the key is outside the car, which will not cause the luggage anti-mislocking to be triggered by mistake.
  • the positioning and judging system of the smart key in the case of mobile phone interference of the present invention is composed of a smart key 1 , a remote control receiver 2 , a body controller 3 and an antenna 4 .
  • the smart key 1 communicates with the remote control receiver 2 through high-frequency wireless signals; the remote control receiver 2 and the body controller 3 are connected through a wire harness; the body controller 3 and the antenna 4 are connected through a wire harness; The smart key 1 communicates through low-frequency wireless signals.
  • the smart key 1 is used for receiving and feeding back low-frequency signal field strength values
  • the remote control receiver 2 is used to receive the high-frequency signal fed back by the smart key 1 and output it to the body controller 3;
  • the body controller 3 is used to drive the antenna 4 to send out a low frequency signal, and judge the position of the smart key 1 according to the field strength value signal of the smart key 1 input by the remote control receiver 2 .
  • a method for locating and judging a smart key under the interference of a mobile phone comprising the following steps:
  • the whole vehicle has 4 antennas, the body controller 3 drives the 4 antennas 4 in turn to send the field strength values, after the smart key 1 receives the field strength values of the 4 antennas 4, it feeds back to the remote control receiver 2 and transmits it to the body controller 3; After the smart key 1 receives the field strength values of 4 antennas 4, it will continue to monitor the time of 1 antenna 4. If there is interference, the interference value will be detected. If there is no interference, the field strength value will be the minimum value;
  • Step 2 The smart key is judged near the trunk:
  • the field strength value of the trunk antenna 4 When the field strength value of the trunk antenna 4 is greater than the field strength value of the trunk antenna 4 when it is near the trunk, the field strength value of the trunk antenna 4 when it is near the trunk is greater than the field strength value of the indoor antenna 4 when it is near the trunk , it can be judged that the smart key 1 is outside the trunk. Since the trunk antenna 4 and the feedback indoor antenna 4 are arranged far away, the field strength value of the trunk antenna 4 is larger than that of the feedback indoor antenna 4 only when the trunk antenna 4 is near the trunk.
  • Step 3 Sending the field strength value:
  • the smart key 1 sends the field strength value of the trunk antenna 4, the field strength value of the indoor antenna 4 fed back by the smart key 1 when there is mobile phone interference, and the field strength value of the left/right antenna 4 fed back by the smart key 1 to the body control when there is mobile phone interference device 3.
  • the trunk can be closed normally, the anti-mislocking function will not be triggered by mistake, and the body controller will not control the opening of the trunk.
  • a method for locating and judging a smart key in the case of mobile phone interference comprising the following steps:
  • the PEPS vehicle has 4 antennas 4, which are the trunk antenna 4, the indoor antenna 4, the left antenna 4 and the right antenna 4.
  • the body controller 3 sequentially drives the 4 antennas 4 of the vehicle to send the field strength value. After receiving the field strength value of the antenna 4, the smart key 1 feeds it back to the remote control receiver 2 and transmits it to the body controller 3;
  • the body controller 3 judges the smart key 1 that the field strength value of the trunk antenna 4 is greater than the set field strength value of 200 when the trunk antenna 4 is identified as being outside the trunk. If it is greater than the field strength value of the indoor antenna 4 when it is near the trunk, it can be judged that the smart key 1 is outside the trunk;
  • the smart key 1 sends the real-time field strength value of the trunk antenna 4, the field strength value 28 of the indoor antenna 4, the field strength value 30 of the left antenna 4 and the right antenna 4 to the body controller 3, and the body controller 3 receives it. , it will not pop open again when closing the trunk.
  • the field strength value 28 of the feedback indoor antenna 4 and the field strength value 30 of the left antenna 4 and the right antenna 4 are used as passwords, and the body controller 3 can confirm that the smart key 1 is outside the luggage compartment after receiving this data. There is cell phone interference at this time.
  • the trunk can be closed normally, the anti-mislocking function will not be triggered by mistake, and there will be no situation where the body controller controls the opening of the trunk.
  • the indoor antenna 4 is arranged in the cab, generally at the lower part of the water cup holder on the sub-dashboard.
  • the left antenna 4 is arranged on the upper part of the left B-pillar.
  • the right antenna 4 is arranged on the upper part of the right B-pillar.
  • the trunk antenna 4 is arranged at the position Y0 inside the rear bumper at the lower part of the trunk. All 4 antennas are involved in judging the position of the smart key 1 inside and outside the car. The field strength value of the feedback from the close distance between the smart key 1 and the antenna 4 will be greater than the field strength value of the far distance from the antenna.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

一种智能钥匙在手机干扰情况下的定位判断系统及方法，定位判断系统由智能钥匙(1)、遥控接收器(2)、车身控制器(3)以及天线(4)构成；定位判断方法，包括空间场干扰检测，智能钥匙(1)在行李箱外部判断，智能钥匙(1)将4根天线(4)的场强值发送给车身控制器(3)，车身控制器(3)是否正常关闭行李箱。智能钥匙在手机干扰情况下的定位判断系统结构简单，定位判断方法通过智能钥匙对手机干扰检测，当检测到有空间场干扰时，且判断智能钥匙处于行李箱外部，反馈室内天线/左侧天线/右侧天线较小的场强值，此时车身控制器会判断钥匙在车外，不会引起行李箱防误锁误触发；能提高在手机干扰的情况下，智能钥匙的定位准确性，可明显提升用户在感知方面的满意度。

Description

一种智能钥匙在手机干扰情况下的定位判断系统及方法 技术领域
本发明属于汽车技术领域，具体涉及一种智能钥匙位置的判定方法，特别涉及一种智能钥匙在手机干扰情况下的定位判断系统及方法。
背景技术
随着汽车科技的发展，车身控制系统的功能正逐步向舒适性、操作便利性发展。越来越多带有无钥匙进入的车型，具有行李箱防误锁功能。全车闭锁状态下单独解锁行李箱，关闭行李箱时检测到行李箱区域内有合法智能钥匙(已经被锁止禁能的钥匙可以不考虑)，提示驾驶室内有合法钥匙，并且行李箱不能关闭。由于手机对低频的干扰，在手机贴近智能钥匙的情况下，智能钥匙反馈的场强值增大，满足行李箱防误锁条件时，触发距离会增大，所以对智能钥匙的定位准确性要求越来越高。
发明内容
本发明的目的就在于提供一种智能钥匙在手机干扰情况下的定位判断系统，还提供一种智能钥匙在手机干扰情况下的定位判断方法，以解决智能钥匙在手机干扰下可以准确定位的问题。
本发明的目的是通过以下技术方案实现的：
一种智能钥匙在手机干扰情况下的定位判断系统，由智能钥匙1、遥控接收器2、车身控制器3以及天线4构成。
所述智能钥匙1与遥控接收器2通过高频无线信号通信；所述遥控接收器2与车身控制器3通过线束连接；所述车身控制器3与天线4通过线束连接；所述天线4与智能钥匙1通过低频无线信号通信。
所述智能钥匙1，用于低频信号场强值的接收及反馈；
所述遥控接收器2，用于接收智能钥匙1反馈的高频信号并输出给车身控制器3；
所述车身控制器3，用于驱动天线4发出低频信号，并根据遥控接收器2输入的智能钥匙1场强值信号，判断智能钥匙1的位置。
一种智能钥匙在手机干扰情况下的定位判断方法，包括以下步骤：
A、空间场干扰检测：
A1、整车有4根天线4，分别为行李箱天线4、室内天线4、左侧天线4和右侧天线4，车身控制器3依次驱动整车的4根天线4发送场强值，智能钥匙1在接收完天线4的场强值后，反馈给遥控接收器2传输给车身控制器3；
A2、再继续监测1个天线4的时间，如果有干扰，则会检测到干扰值，如果没有干扰，则场强值为最小值，反馈给遥控接收器2传输给车身控制器3；
B、智能钥匙1位置判断：
车身控制器3对智能钥匙1位置进行判断，若行李箱天线4场强值大于设定的识别为在行李箱外部时行李箱天线4的场强值，同时，行李箱天线4场强值大于在行李箱附近时反馈室内天线4的场强值，可判断出智能钥匙1在行李箱外部；
C、场强值发送：
智能钥匙1将行李箱天线4、室内天线4、左侧天线4和右侧天线4的场强值发送给车身控制器3，车身控制器3收到后，关闭行李箱时不会再次弹开。
进一步地，步骤A，所述行李箱天线4、室内天线4，左侧天线4和右侧天线4分别通过线束与车身控制器3相连。
进一步地，步骤A2，所述有手机干扰时场强值大于30。
进一步地，步骤B，所述设定的识别为在行李箱外部时行李箱天线4的场强值大于200。
进一步地，步骤C，所述室内天线4的场强值为28。
进一步地，步骤C，所述左侧天线4和右侧天线4的场强值为30。
进一步地，所述智能钥匙1与遥控接收器2通过高频无线信号通信；所述遥控接收器2与车身控制器3通过线束连接；所述车身控制器3与天线4通过线束连接；所述天线4与智能钥匙1通过低频无线信号通信。
与现有技术相比，本发明的有益效果是：
本发明智能钥匙在手机干扰下情况下的定位判断系统结构简单，定位判断方法，通过智能钥匙对手机干扰检测，当检测到有空间场干扰时，且判断智能钥匙处于行李箱附近，反馈室内天线/左侧天线/右侧天线较小的场强值，此时BCM会判断钥匙在车外，不会引起行李箱防误锁误触发；能提高在手机干扰的情况下，智能钥匙的定位准确性，可明显提升用户在感知方面的满意度。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使 用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1本发明智能钥匙在手机干扰情况下的定位判断系统结构图。
图中，1.智能钥匙 2.遥控接收器 3.车身控制器 4.天线。
具体实施方式
下面结合实施例对本发明作进一步说明：
下面结合附图和实施例对本发明作进一步的详细说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本发明，而非对本发明的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本发明相关的部分而非全部结构。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。同时，在本发明的描述中，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
如图1所示，本发明智能钥匙在手机干扰情况下的定位判断方法，通过智能钥匙1对手机干扰检测，当检测到有空间场干扰时，且判断智能钥匙1处于行李箱附近，反馈室内天线4、左侧天线4和右侧天线4均为较小的场强值，此时车身控制器3会判断钥匙在车外，不会引起行李箱防误锁误触发。
本发明智能钥匙在手机干扰下情况下的定位判断系统，由智能钥匙1、遥控接收器2、车身控制器3以及天线4构成。
所述智能钥匙1与遥控接收器2通过高频无线信号通信；所述遥控接收器2与车身控制器3通过线束连接；所述车身控制器3与天线4通过线束连接；所述天线4与智能钥匙1通过低频无线信号通信。
所述智能钥匙1，用于低频信号场强值的接收及反馈；
所述遥控接收器2，用于接收智能钥匙1反馈的高频信号并输出给车身控制器3；
所述车身控制器3，用于驱动天线4发出低频信号，并根据遥控接收器2输入的智能钥匙1场强值信号，判断智能钥匙1的位置。
一种智能钥匙在手机干扰下情况下的定位判断方法，包括以下步骤：
步骤一、空间场干扰检测：
整车有4天线，车身控制器3依次驱动4根天线4发送场强值，智能钥匙1在接收完4个天线4的场强值后，反馈给遥控接收器2传输给车身控制器3；在智能钥匙1收到4个天线4场强值后，再继续监测1个天线4的时间，如果有干扰，则会检测到干扰值，如果没有干扰，则场强值为最小值；
步骤二、智能钥匙在行李箱附近判断：
当行李箱天线4场强值大于在行李箱附近时行李箱天线4的场强值，在行李箱附近时行李箱天线4的场强值大于在行李箱附近时反馈室内天线4的场强值，可判断出智能钥匙1在行李箱外部。由于行李箱天线4和反馈室内天线4布置位置距离较远，只有在行李箱附近时，行李箱天线4才会比反馈室内天线4场强值大。
步骤三、场强值发送：
智能钥匙1发送行李箱天线4的场强值、有手机干扰时智能钥匙1反馈的 室内天线4场强值和有手机干扰时智能钥匙1反馈左/右侧天线4的场强值给车身控制器3。
此种情况下，可以正常关闭行李箱，不会误触发防误锁功能，不会发生车身控制器控制行李箱开启的情况。
实施例
一种智能钥匙在手机干扰情况下的定位判断方法，包括以下步骤：
A、空间场干扰检测：
A1、PEPS整车有4根天线4，分别为行李箱天线4、室内天线4、左侧天线4和右侧天线4，车身控制器3依次驱动整车的4根天线4发送场强值，智能钥匙1在接收完天线4的场强值后，反馈给遥控接收器2传输给车身控制器3；
A2、再继续监测1个天线4的时间，如果场强值大于30，即为有干扰，将场强值反馈给遥控接收器2传输给车身控制器3；
B、智能钥匙1位置判断：
车身控制器3接着对智能钥匙1进行判断，行李箱天线4场强值大于设定的识别为在行李箱外部时行李箱天线4的场强值200，同时，行李箱天线4场强值要大于在行李箱附近时反馈室内天线4的场强值，可判断出智能钥匙1在行李箱外部；
C、场强值发送：
智能钥匙1将行李箱天线4的实时场强值、室内天线4的场强值28、左侧天线4和右侧天线4的场强值30发送给车身控制器3，车身控制器3收到后，关闭行李箱时不会再次弹开。
本发明以反馈室内天线4的场强值28、左侧天线4和右侧天线4的场强值 30为口令，车身控制器3收到此数据，即可确认智能钥匙1在行李箱外部且此时有手机干扰。可以正常关闭行李箱，不会误触发防误锁功能，不会发生车身控制器控制行李箱开启的情况。
所述室内天线4布置在驾驶室内，一般布置在副仪表板水杯架下部。所述左侧天线4布置在左侧B柱上部。所述右侧天线4布置在右侧B柱上部。所述行李箱天线4布置在行李箱下部后保险杠内部Y0位置。4根天线都参与智能钥匙1在车内外的位置判断，智能钥匙1与天线4的距离近反馈的场强值会大于与天线的距离远的场强值。
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。

Claims (8)

  1. 一种智能钥匙在手机干扰情况下的定位判断系统，其特征在于：由智能钥匙(1)、遥控接收器(2)、车身控制器(3)以及天线(4)构成；
    所述智能钥匙(1)与遥控接收器(2)通过高频无线信号通信；所述遥控接收器(2)与车身控制器(3)通过线束连接；所述车身控制器(3)与天线(4)通过线束连接；所述天线(4)与智能钥匙(1)通过低频无线信号通信。
    所述智能钥匙(1)，用于低频信号场强值的接收及反馈；
    所述遥控接收器(2)，用于接收智能钥匙(1)反馈的高频信号并输出给车身控制器(3)；
    所述车身控制器(3)，用于驱动天线4发出低频信号，并根据遥控接收器(2)输入的智能钥匙(1)场强值信号，判断智能钥匙(1)的位置。
  2. 一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于，包括以下步骤：
    A、空间场干扰检测：
    A1、整车有4根天线(4)，分别为行李箱天线(4)、室内天线(4)、左侧天线(4)和右侧天线(4)，车身控制器(3)依次驱动整车的4根天线(4)发送场强值，智能钥匙(1)在接收完天线(4)的场强值后，反馈给遥控接收器(2)传输给车身控制器(3)；
    A2、再继续监测1个天线(4)的时间，如果有干扰，则会检测到干扰值，如果没有干扰，则场强值为最小值，反馈给遥控接收器(2)传输给车身控制器(3)；
    B、智能钥匙(1)位置判断：
    车身控制器(3)对智能钥匙(1)位置进行判断，若行李箱天线(4)场强值大于设定的识别为在行李箱外部时行李箱天线(4)的场强值，同时，行李箱 天线(4)场强值大于在行李箱附近时反馈室内天线(4)的场强值，可判断出智能钥匙(1)在行李箱外部；
    C、场强值发送：
    智能钥匙(1)将行李箱天线(4)、室内天线(4)、左侧天线(4)和右侧天线(4)的场强值发送给车身控制器(3)，车身控制器(3)收到后，关闭行李箱时不会再次弹开。
  3. 根据权利要求2所述的一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于：步骤A，所述行李箱天线(4)、室内天线(4)，左侧天线(4)和右侧天线(4)分别通过线束与车身控制器(3)相连。
  4. 根据权利要求2所述的一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于：步骤A2，所述有手机干扰时场强值大于30。
  5. 根据权利要求2所述的一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于：步骤B，所述设定的识别为在行李箱外部时行李箱天线(4)的场强值为大于200。
  6. 根据权利要求2所述的一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于：步骤C，所述室内天线(4)的场强值为28。
  7. 根据权利要求2所述的一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于：步骤C，所述左侧天线(4)和右侧天线(4)的场强值为30。
  8. 根据权利要求2所述的一种智能钥匙在手机干扰情况下的定位判断方法，其特征在于：所述智能钥匙(1)与遥控接收器(2)通过高频无线信号通信；所述遥控接收器(2)与车身控制器(3)通过线束连接；所述车身控制器(3)与天线(4)通过线束连接；所述天线(4)与智能钥匙(1)通过低频无线信号通信。
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