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Method and device for checking plausibility of transverse movement

A lateral movement and reliability technology, applied in the field of driver assistance systems, which can solve the problems of range interference, inaccuracy, and recognition that are not easily estimated correctly.

Pending Publication Date: 2020-09-04
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the FMCW method has a greater inaccuracy than the CW method, since the range analyzed in the Doppler spectrum is more heavily interfered by other objects
Therefore, in particular the detection of lateral movements (ie movements of objects perpendicular to the direction of movement of the radar device or vehicle) is often not easy to estimate correctly

Method used

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  • Method and device for checking plausibility of transverse movement
  • Method and device for checking plausibility of transverse movement
  • Method and device for checking plausibility of transverse movement

Examples

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Embodiment Construction

[0026] figure 1 Shows a block diagram of a device 1a according to a first embodiment of the invention for plausibility checking of initially known lateral movements of objects in the vehicle surroundings, for example with the aid of sensor data Calculated. The object can be, for example, a cyclist, a pedestrian or another vehicle. The device 1 a can be designed as a driver assistance system or can be part of a driver assistance system of a vehicle. Device 1 a includes an interface 4 which is designed to receive sensor data from vehicle sensors wirelessly or via a cable connection. The sensor data include information about the lateral movement of objects in the vehicle's surroundings, such information including in particular the lateral speed of the object and optionally additionally the lateral distance of the object from the vehicle's lane. The data received via the interface 4 are transmitted to the computing means 3 of the device 1a.

[0027] The device 1a also has a ra...

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Abstract

The invention relates to a method for checking the plausibility of an initially known transverse movement of an object (7), having the steps of: emitting a radar signal with a constant signal frequency and receiving reflections of the radar signal with a constant signal frequency by means of a radar device (2); and checking the plausibility of the transverse movement of the object (7) by analyzingfrequency ranges corresponding to the transverse movement in a spectrum of the reflected radar signal with a constant signal frequency.

Description

technical field [0001] The invention relates to a method and a corresponding device for plausibility checking of an initially known lateral movement of an object. The invention relates in particular to a driver assistance system having such a device. Background technique [0002] Modern driver assistance systems feature radar sensors that monitor the vehicle's surroundings. In contrast to video cameras, radar sensors can directly measure the relative speed of objects by means of the Doppler effect. An exemplary method for object detection is known from DE 1994 9409 A1. [0003] Particularly widely known is the so-called FMCW method (frequency modulated continuous wave, English: frequency modulated continuous wave). In this case, a radar signal with a periodic frequency modulation is emitted, and the radar signal reflected on the object is subsequently received and evaluated. In addition to relative velocity, the FMCW method is also able to determine the distance of an ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/32G01S13/58G01S13/86G01S13/931
CPCG01S13/32G01S13/58G01S13/589G01S13/86G01S13/931G01S2013/9321G01S2013/9318G01S2013/93271G01S2013/93185G01S13/583
Inventor M·施洛瑟H·布登迪克
Owner ROBERT BOSCH GMBH