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Keyless entry system

A keyless entry, portable technology, applied in signal transmission systems, individual input/output registers, instruments, etc., can solve the problems of prolonged current consumption and high sensitivity, unable to fully suppress battery life reduction, etc. , to achieve the effect of inhibiting the reduction of lifespan

Inactive Publication Date: 2015-06-17
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the high-sensitivity period in which the battery current consumption increases becomes longer than necessary
As a result, the reduction in the life of the battery built in the smart key 910 cannot be sufficiently suppressed.

Method used

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Examples

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Embodiment Construction

[0056] Embodiments of the present invention are described below with reference to the drawings.

[0057] figure 1 It is a diagram showing a schematic configuration of the keyless entry system 100 , and is a plan view when a vehicle 50 including the vehicle-mounted device 10 and a user 55 holding the portable device 20 are viewed from above. The vehicle-mounted device 10 is mounted on a vehicle 50 and is composed of a vehicle-mounted device main body 10 a , a vehicle-side transmitting antenna 2 , and a vehicle-side receiving antenna 4 . In the keyless entry system 100 , the vehicle-side transmitting antenna 2 includes four antennas arranged at predetermined positions in the vehicle 50 , and one vehicle-side receiving antenna 4 is arranged adjacent to the vehicle-mounted device main body 10 a. However, the arrangement of the four vehicle-side transmitting antennas 2 and the vehicle-side receiving antennas 4 mentioned here is an example, and other arrangements are also possible...

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PUM

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Abstract

In a keyless entry system (100) including an in-vehicle device (10), and a portable device (20) operated by a built-in battery (19), a request signal is transmitted from the in-vehicle device (10) to the portable device (20) so that wireless communication is performed between the in-vehicle device (10) and the portable device (20), the portable device (20) can set first sensitivity that is predetermined sensitivity and second sensitivity that is higher sensitivity than the first sensitivity and at which a detection area for the request signal is wide, as detection sensitivity for detecting the request signal, sets the detection sensitivity to the second sensitivity when determining that the portable device (20) is in the vehicle (50)'s interior (51) or within the predetermined distance from the vehicle (50), and sets the detection sensitivity to the first sensitivity when determining that the portable device (20) is not in or comes to be not in the vehicle's interior (51) or within the predetermined distance from the vehicle (50).

Description

technical field [0001] The present invention relates to a keyless entry system for locking or unlocking the doors of a vehicle through wireless communication between a vehicle-mounted device and a portable device, and more particularly to a passive system having a function of automatically communicating between a vehicle-mounted device and a portable device. Keyless entry system. Background technique [0002] In mobile vehicles such as motor vehicles, door locks are provided on the doors of the motor vehicle in order to prevent the motor vehicle from being stolen when the motor vehicle is not in use, or to prevent internal devices from being damaged due to intrusion into the motor vehicle. Conventionally, the locking and unlocking of the car door locks is performed by inserting a key for starting the engine into the keyhole, but from the viewpoint of convenience, it is performed by operating the switch of the portable device without inserting the key into the keyhole. A so-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R25/00G07C9/00
CPCB60R25/245G07C9/00G07C9/00309G07C2009/00341G07C2009/0038G07C2009/00547G08C17/02G07C9/20
Inventor 安井淳哉宫泽明
Owner ALPS ALPINE CO LTD
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