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Key remote controller and method for exchanging signals between motor car-side control device and key remote controller

A technology of key remote control and control equipment, applied in the field of key remote control

Inactive Publication Date: 2012-02-29
HUF HULSBECK & FURST GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this known application of the key remote control for car antitheft is that the key remote control must be arranged directly near the coil mechanism on the motor vehicle side, and must include a definite position (orientation) in addition, so that the motor vehicle side Data transmission in both directions between control device and key fob is of sufficient quality

Method used

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  • Key remote controller and method for exchanging signals between motor car-side control device and key remote controller
  • Key remote controller and method for exchanging signals between motor car-side control device and key remote controller

Examples

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Embodiment Construction

[0017] figure 1 An arrangement with a vehicle-side control device 1 and a key remote control 2 is shown in schematic form. The control device 1 is represented as a single block. In some embodiments, the control device 1 can also comprise a plurality of components which are arranged at different points in the interior of the motor vehicle. The control device controls, for example, various functions such as car anti-theft of an electronic steering lock (ELV), unlocking or locking of door locks and a trunk lid lock, and starting and stopping of an engine. In this case, the control unit for controlling these functions can be arranged in the components for carrying out the respective functions. Thus, for example, the part of the control device 1 that controls the anti-theft of the vehicle is preferably installed in the ELV module near the steering column.

[0018] figure 1 Also shown is a key remote control 2 which is often also referred to as an electronic key or ID transmitte...

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Abstract

The present invention relates to a key remote controller (2) used for unlocking / locking and / or starting / parking, comprising a code apparatus connected with control devices (16-18, 20) and a coil arrangement (4) connected with the control devices, wherein the coil arrangement is used for wirelessly communicating with an antenna coil mechanism (10-12) of the motor car-side control device (1), the coil arrangement (4) comprises three or more coils that are oriented in three directions of space, the coils are coupled with the control devices (16-18, 20) such that the control devices can determine which coil receives a first signal in the largest intensity when the coil arrangement (4) receives the first signal emitted by the motor car-side antenna coil arrangement (10-12), and then a second signal transmitted from the key remote controller (2) to the motor car-side control devices (1) is emitted by the coil or one of the coils receiving the first signal in the largest field intensity through the control devices.

Description

technical field [0001] The invention relates to a key fob for activating unlocking / locking and / or starting / parking functions of a motor vehicle. This key remote is also often referred to as an electronic key or ID transmitter. Furthermore, the invention relates to a method for exchanging signals between such a key fob and a control unit on the motor vehicle side. Background technique [0002] Key fob remote controls of the type mentioned at the outset generally have a coding device coupled to a control device, such as a microcontroller, as well as a transmitting and receiving device. In particular, the control unit is coupled for wireless communication with an antenna coil unit of the vehicle-side control unit via a receiver unit with a coil unit. The signal transmission between the antenna coil arrangement of the vehicle-side control unit and the receiver coil arrangement of the key fob typically takes place in the LF frequency band, eg 125 kHz. [0003] A conventional k...

Claims

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Application Information

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IPC IPC(8): B60R25/10E05B19/00H04B17/00B60R25/24
CPCB60R25/24
Inventor 博里斯·齐勒尔
Owner HUF HULSBECK & FURST GMBH & CO KG
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