Vehicle-mounted four-wire laser radar system and circuit and method thereof

A radar system and line laser technology, applied in the field of vehicle lidar system, can solve the problems of inability to detect obstacles normally, lack of detection, small coverage, etc., and achieve the effects of compact structure, low false alarm rate and low cost

Inactive Publication Date: 2012-06-20
GUANGDONG COAGENT ELECTRONICS SCI & TECH
View PDF10 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single line-scanning lidar can only scan on one surface, and the coverage is small. It is easy to cause the lack of detection in the obstacle warning, and it is easy to detect only the ground when it is uphill and the body is undulating. detect obstacles

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle-mounted four-wire laser radar system and circuit and method thereof
  • Vehicle-mounted four-wire laser radar system and circuit and method thereof
  • Vehicle-mounted four-wire laser radar system and circuit and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] see Figure 4~Figure 6 , the vehicle four-wire LiDAR system is mainly composed of a power supply system 11, a control system 10, a transmitting system 12, a receiving system 15, an optical system 14 and a scanning system 13; the power supply module in the power supply system 11 provides the required power to each system, The control system 10 controls the transmitting system 12 to emit laser light. After the laser light is collimated and shaped by the optical system 14, the laser light is reflected back when it encounters the target object. After being filtered by the optical system 14, the reflected echo signal is received by the receiving system 15 and a After the series of processing, it is fed back to the control system 10, and the control system 10 performs arithmetic processing; the transmitting system 12 emits laser light from four lasers, and the scanning system includes a motor 54 and a mercury slip ring 50, which is characterized by the four lasers 53. It is ...

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

The invention discloses a vehicle-mounted four-wire laser radar system and a circuit and a method thereof. The vehicle-mounted four-wire laser radar system mainly comprises a transmitting system, a receiving system, an optical system and a scanning system, wherein the transmitting system is combined with the scanning system; radar scanning is realized by a mode that a direct-current stepping motor controls a laser to rotate; and the laser is electrically connected with an external circuit through a mercury sliding ring, so the scanning system has a small volume. The vehicle-mounted four-wire laser radar system performs scanning by adopting four laser beams according to a laser pulse ranging theory; the detection distance is at most 200 meters; and the resolution is at most 10 centimeters. Therefore, the system has relatively high performance and precision, and is low in cost; and by combining system software, the vehicle-mounted four-wire laser radar system has functions of measuring a vehicle distance and a vehicle speed, retaining the vehicle distance, prewarning collision, automatically cruising, prewarning lane deflection and the like, so that the system assists in a driver to drive a vehicle safely.

Description

technical field [0001] The invention relates to an application of laser radar in the field of automobile auxiliary driving systems, in particular to a vehicle-mounted laser radar system with four lasers for simultaneous line scanning and an application circuit structure and implementation method thereof. Background technique [0002] With the booming development of the automobile industry, the traffic flow continues to increase, and traffic accidents occur frequently, and the burden on drivers is also increasing. In order to reduce the losses caused by traffic accidents, passive safety technologies such as airbags, ABS, and smart headlights have been applied to automobiles, but these passive safety measures can only reduce losses and cannot prevent accidents. With the development of electronic technology, the automotive industry has widely used various electronic devices such as navigators and automotive radars to assist driving, but these are still based on the driver's jud...

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): G01S17/88G01S17/93G01S7/481
Inventor 陈滔伍栋扬王冰
Owner GUANGDONG COAGENT ELECTRONICS SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap