Check patentability & draft patents in minutes with Patsnap Eureka AI!

Detection device

By using a scan control device in the detection device and adjusting the laser beam scanning based on the driving direction and speed signals, the problem of obstacle detection during high-speed driving and driving direction changes is solved, and high-precision monitoring of the movement and status of obstacles is achieved, improving the Driving safety.

Inactive Publication Date: 2006-09-20
SANYO ELECTRIC CO LTD
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, JP11-325885A does not describe how to control the laser beam scanning state so that it is suitable for high-speed driving, obstacle detection and driving direction change

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Embodiments of the present invention will be described below with reference to the drawings. It should be noted that this embodiment applies the present invention to a beam irradiating device built in an automobile. In this embodiment, the presence or absence of an obstacle in the scanning area and the distance to the obstacle are detected by irradiating a laser beam from a position in front of the vehicle and scanning the laser beam in the scanning area.

[0041] figure 1 The configuration of a beam irradiation device according to an embodiment of the present invention is shown.

[0042] Such as figure 1 As shown, the beam radiation device is provided with a digital signal processing (DSP) control circuit 10, a digital-to-analog converter (DAC) 20, a laser drive circuit 30, an actuator drive circuit 40, a beam radiation head 50, a position sensitive detector (PSD ) signal processing circuit 60 , an analog-to-digital converter (ADC) 70 , a photodetector (PD) signal p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A scan trajectory of a laser beam is controlled based on external signals each related to a driving direction and a driving speed, a result obtained by detection of an obstacle, and signals related to distances to the obstacle. For example, at the time of a right turn, a scan trajectory for increasing scan frequency on a portion shifted in a right-turn direction from a center axis in a driving direction is set. At the time of high-speed driving, a scan trajectory for increasing scan frequency on a center portion in the driving direction is set. When the obstacle is detected at a position corresponding to a distance shorter than a threshold distance, a scan trajectory for increasing scan frequency in the vicinity of the obstacle is set. Detection of the obstacle and monitoring of a state thereof are adequately and smoothly performed at the time of changing of the driving direction, the time of high-speed driving, and the time of detection of the obstacle.

Description

technical field [0001] The present invention relates to a detection device, which detects obstacles in a target area by emitting a laser beam to the target area, and is suitable for being installed on a moving object such as a car or an airplane, for example. Background technique [0002] In recent years, in order to improve driving safety, a detection device for detecting an obstacle ahead in the driving direction of the automobile or the like is installed on an automobile such as a family automobile. The detection device scans the target area with the laser beam, and detects the presence or absence of an obstacle in the target area based on the appearance or disappearance of a reflected beam of the laser beam. Set a scan mode during normal driving that scans the entire target area in front of the car with the laser beam. The pulsed beam is output to a predetermined position on the scanning pattern, and the presence or absence of an obstacle at the scanning position is det...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/48G01S17/08G01S17/93G01S17/931
CPCG01C3/08G01S17/936G01S17/46G01S17/931
Owner SANYO ELECTRIC CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com