Vehicle-mounted inertial navigation system

Abstract

The invention discloses a vehicle-mounted inertial navigation system. The vehicle-mounted inertial navigation system comprises a pressure altitude sensor, a milemeter, an acceleration sensor, an image acquisition module, a control module, a touch display module, an audio module and a communication module, wherein a plurality of interrupt response modules, an I2C bus interface module, a serial port communication interface module and a data input-output module are arranged inside the control module; the milemeter is connected with the interrupt response modules of the control module; the pressure altitude sensor is connected with the control module by virtue of the I2C bus interface module; the communication module is connected with the control module by virtue of the serial port communication interface module; and the acceleration sensor, the image acquisition module, the touch display module and the audio module are connected with the control module by virtue of the data input-output module. The vehicle-mounted inertial navigation system is capable of providing three-dimensional position, speed and track data and has the assistance of the characteristics of driver eye-closing caution, impact caution, border crossing caution, automatic cooperation of near interest points, and the like.

Description

technical field [0001] The present invention relates to the field of vehicle navigation, in particular to a vehicle navigation system capable of providing three-dimensional position, speed and track data, supplemented by driver eye-closed warnings, collision warnings, boundary-crossing warnings and automatic matching of nearby points of interest. Background technique [0002] At present, the vehicle inertial navigation positioning methods can only assume that the vehicle is driving on a plane, so the obtained results are all based on the positioning results in the plane Cartesian coordinate system. In a real application environment, if the height of the vehicle changes, such as going uphill or downhill, driving into or out of a viaduct, etc., the positioning system cannot judge the height information of the vehicle and cannot accurately guide the vehicle's driving path. As a result, the quality of inertial navigation positioning is greatly affected. In addition, fatigue dri...

AI Technical Summary

Problems solved by technology

In a real application environment, if the height of the vehicle changes, such as going uphill or downhill, driving into or out of a viaduct, etc., the positioning system cannot judge the height information of the vehicle and cannot accurately guide the vehicle's driving path. The quality of inertial navigation positioning is greatly affected

In addition, fatigue driving, together with drug driving, drunk driving, speeding and overloading, has become the five types of serious violations severely cracked down by the traffic police department. The existing car navigation system cannot give reminders when the driver is in a state of fatigue, and cannot Send alarm information to relevant targets other than the vehicle

In addition, the existing car navigation system cannot combine maps and secondary information attached to the road to enhance the driver's experience like a mobile phone

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