Embedded onboard combined navigation system based on dynamic traffic information

Abstract

The invention discloses an embedded onboard combined navigation system based on dynamic traffic information, and relates to the field of intelligent electronic equipment of automobile assistant driving. The system consists of an embedded onboard information device 1 which is connected with a GPS / DR combined navigation module 2, a map matching module 3, a dynamic traffic induction module 4, a state identifying module 5, an onboard multimedia module 6 and a wireless data communication module 8 respectively, and an onboard information communication module 7, a dynamic traffic information module 9 and a software module which are assistant. The system adopts a combined Kalman filtering method to fuse positioning system information of a GPS positioning module and a DR positioning module so as to acquire optimal combined positioning data; and then the combined positioning data are sent to a CPU to be displayed or matched with a GIS database which is an electronic map, and the processed longitude and latitude data with high precision are output for users to use. The system can intuitively display information such as current position, time, speed and the like, and simultaneously provides accurate and quick dynamic navigation service.

Description

technical field [0001] The invention belongs to the field of intelligent electronic equipment for automobile auxiliary driving, in particular to an embedded vehicle integrated navigation system based on dynamic traffic information. Background technique [0002] Intelligent transportation system is mainly used to solve the problems of traffic congestion, road blockage, traffic safety and coordination of traffic and environment in today's world. The intelligent vehicle automatic navigation system is an important part of the intelligent transportation system. The technology system can provide drivers with various important information in real time and efficiently, and has strong practical value and broad market prospects. There are three types of vehicle navigation and positioning systems in the intelligent vehicle automatic navigation system: autonomous, non-autonomous and combined. The autonomous vehicle navigation and positioning system utilizes the inertial navigation pri...

AI Technical Summary

Problems solved by technology

As far as land vehicle navigation is concerned, although the GPS positioning and navigation system can provide high-precision three-dimensional position and speed information continuously and in real time around the clock, when the vehicle is driving in an urban area full of tall buildings, because the GPS satellite signal is often blocked, in some cases It is impossible to achieve continuous and accurate positioning through the GPS system

The vehicle dead reckoning navigation system (DR) is an autonomous vehicle navigation system, which has high accuracy in a short period of time, but the navigation error accumulates over time.

Images