Car navigation device and method

Abstract

A vehicle navigation method, comprising the following steps: receiving the current position information of the vehicle from a satellite positioning processor, and connecting to a network communication unit to receive the current position information of the vehicle if there is no satellite signal; generating a planned route according to the current position of the vehicle, map information and destination; Judging whether the distance between the current position of the vehicle and the nearest bifurcation point in front of the planned path is less than the preset distance, if not, return to the step of receiving the current position information of the vehicle; the direction sensing unit and the height sensing unit sense and record Vehicle driving direction and height change; compare whether the direction and height change information is the same as the direction and height information of the correct path, and send a warning message if they are not the same. The invention also provides a vehicle navigation device. The present invention can provide critical and real-time path direction and height change judgments, so as to prevent drivers from driving to wrong paths at critical path bifurcation points.

Description

Technical field [0001] The invention relates to a navigation device and method, in particular to a vehicle navigation device and method. Background technique [0002] With the continuous innovation and progress of technology, the installation of GPS (Global Positioning System) navigation devices on the car has become one of the habits of ordinary drivers. The GPS navigation device receives satellite signals transmitted by GPS positioning satellites in space, and displays the real-time position of the vehicle in the navigation software of the navigation device according to the satellite signals, so as to realize the navigation function of the road. However, because GPS navigation uses the signals emitted by multiple satellites to locate the driver’s current geographic location (usually expressed in longitude and latitude), if you encounter poor satellite signal reception (such as bad weather, When there is an elevated road in the valley or above the road), the GPS navigation devi...

AI Technical Summary

Problems solved by technology

However, drivers often observe the route indication directions on the navigation screen, which will cause them to fail to pay attention to the real-time road conditions for a period of time

Or listen to real people's simulated voice prompts, although it can prevent the line of sight from leaving the front of the vehicle, but these functions are to inform the direction of the planned route in advance, and if the driver chooses the wrong route, the navigation device must receive GPS satellite signals and process them before driving. Remind the driver, the function of reminding the driver cannot be achieved immediately

Even when the device cannot receive GPS satellite signals, it may cause the driver to watch the navigation screen of the GPS navigation device all the time, and cannot know the planned path of the navigation. It is necessary to wait until the navigation device receives the new GPS position coordinates before Issue a warning notification that the current driving route does not match the pre-planned route

This will not only cause the danger of vehicle driving, but also may cause driving to the wrong path, resulting in more fuel and time waste

Images