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Parking assistance system

A technology of parking assistance and target parking, applied in the field of parking assistance systems, can solve the problem of inability to accurately detect the size of adjacent vehicles

Active Publication Date: 2005-12-28
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, detecting an adjacent vehicle using the ultrasonic sensor as described in Patent Document 1 cannot accurately detect the size of the adjacent vehicle, etc.

Method used

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Examples

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Embodiment Construction

[0029] A parking assist system 100 according to an embodiment of the present invention will be described with reference to the associated drawings.

[0030] The system 100 provided in the subject vehicle includes such as figure 1 Shown below are 1 to 10. The ultrasonic sensor 1 includes a transmitter and a receiver using piezoelectric elements, and is set on both sides of a subject vehicle to measure a mutual distance from a certain side to a homing vehicle. Such as figure 2 As shown, the ultrasonic sensor 1 transmits ultrasonic waves directionally from a transmitter, and receives ultrasonic waves reflected by an obstacle 11 through a receiver. The detection distance from a certain side of the subject vehicle to the obstacle 11 (or the homing vehicle) is acquired at a time interval from when ultrasonic waves are transmitted to when reflected ultrasonic waves are received.

[0031] A speed sensor 2 is disposed close to a wheel to output a periodic signal corresponding to th...

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Abstract

By using the ultrasonic sensor (1) and the speed sensor (2) while the subject vehicle is stopped and moved backwards, the detection distance data item (di) and the forward distance data item (ΔXi) are obtained. These data items are stored together with data items related to each other. The detection distance data item indicates the distance to the home vehicle adjacent to the target vehicle and the forward distance data item indicates the distance forward of the target vehicle. When the size of the home vehicle is calculated from the forward distance data item, the size of the home vehicle is determined to be smaller than the total distance corresponding to the forward distance data item. This makes it possible for the determined dimensions of the home vehicle to be close to the true dimensions of the home vehicle.

Description

technical field [0001] The present invention relates to a parking assistance system that can assist a driver to park a subject vehicle laterally or longitudinally so as to be parallel to the parked vehicle. Background technique [0002] Patent Document 1 describes a parking assist system implemented as follows: when a subject vehicle is moved before homing, obstacle information is acquired using an ultrasonic sensor; the obstacle information is accumulated in a neighboring image generation unit, thereby generating a a map in the vicinity of the subject vehicle; retrieving and determining a target parking area based on the vicinity map; calculating a movement path leading to the target parking area; and displaying an image superimposed on the rear of the subject vehicle on a display The target movement path on . [0003] Patent Document 1: JP-2003-54341A [0004] When a subject vehicle is parked at a parking space in a parking lot, a previously parked vehicle may appear in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/931B60Q1/48B60W10/06B60W10/20B60W30/06B62D15/02G01S13/00G05D1/03G06V10/25G06V10/44G08G1/14G08G1/16
CPCB60T2201/10B60W10/06B60W10/20B62D15/0285G01S15/931G01S2015/935G01S2015/936G08G1/165G08G1/168G01S2013/932G06V20/586G06V10/25G06V10/44
Inventor 松川典史佐藤善久加藤耕治
Owner DENSO CORP
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