CN114325783A - Vehicle positioning system and method based on GPS - Google Patents

Abstract

The invention discloses a GPS-based vehicle positioning system, which comprises a data acquisition unit, a data comparison unit, a data calibration unit and a data storage unit, wherein the data acquisition unit is used for acquiring road, running speed and time data of a target vehicle, road, running speed and time data of a passing vehicle and position and passing time data of a fixed reference object, the data comparison unit is used for positioning an initial target position of the target vehicle by comparing the data of the target vehicle and the passing vehicle acquired by the data acquisition unit, and the data calibration unit is used for calibrating according to the initial target position of the target vehicle and the position and the passing time data of the fixed reference object acquired by the data acquisition unit to position a final target position of the target vehicle. The invention also provides a vehicle positioning method based on the GPS. Compared with the related art, the vehicle positioning system and method based on the GPS are more accurate in positioning.

Description

Vehicle positioning system and method based on GPS

Technical Field

The invention relates to the technical field of vehicle monitoring, in particular to a vehicle positioning system and method based on a GPS.

Background

At present, with the maturity of the GPS technology, the vehicle is more and more accurately positioned. However, the application of the technology to vehicle positioning still has certain limitations, such as complex terrains spirally staggered up and down on roads, remote areas with poor signals, complicated street and tail road strangeness and the like. Under the condition, the positioning error, the positioning reverse position and even the positioning loss occur sometimes, which brings great inconvenience to users and even brings serious consequences which are difficult to compensate. For example, an ambulance is rushing to the scene of the accident to rescue the wounded at the fire speed, but the rescue work is delayed due to inaccurate positioning. Therefore, the GPS-based vehicle positioning system and method in the related art have the defect of inaccurate positioning. How to further improve the positioning accuracy on the premise of meeting the existing positioning requirements becomes a difficult problem for those skilled in the art.

Therefore, there is a need to provide a new GPS-based vehicle positioning system and method to solve the above-mentioned technical problems.

Disclosure of Invention

The present invention is to overcome the above technical problems and provide a vehicle positioning system and method based on GPS with more accurate positioning.

The invention provides a GPS-based vehicle positioning system, which comprises a data acquisition unit, a data comparison unit, a data calibration unit and a data storage unit, the data acquisition unit is used for acquiring the road, the driving speed and the time data of a target vehicle, the road, the driving speed and the time data of a passing vehicle and the position and the passing time data of a fixed reference object, the data comparison unit is used for comparing the data of the target vehicle and the passing vehicle acquired by the data acquisition unit to locate the initial target position of the target vehicle, the data calibration unit is used for calibrating the initial target position of the target vehicle and the position and the passing time data of the fixed reference object acquired by the data acquisition unit to locate the final target position of the target vehicle, and the data storage unit is used for storing the data of the initial target position and the final target position.

Preferably, the position intervals of the fixed reference objects acquired by the data acquisition unit are not more than 50 meters, and the time intervals are not more than 5S.

Preferably, the positions of the fixed reference objects acquired by the data acquisition unit are located on both sides of the target vehicle.

Preferably, the data calibration unit selects the reference passing vehicle 3 from the data of the passing vehicle: 1, in a ratio of 1.

Preferably, the system further comprises a communication unit, and the communication unit is in communication connection with the cloud platform or the terminal.

The invention also provides a vehicle positioning method based on GPS, which provides a vehicle positioning system based on GPS according to the invention, and the method comprises the following steps:

the data acquisition unit acquires road, running speed and time data of a target vehicle, road, running speed and time data of a passing vehicle and position and elapsed time data of a fixed reference object;

the data comparison unit compares the data of the target vehicle and the data of the passing vehicles acquired by the data acquisition unit to locate the initial target position of the target vehicle;

the data calibration unit calibrates according to the initial target position of the positioned target vehicle, the position of the fixed reference object acquired by the data acquisition unit and the elapsed time data, and positions the final target position of the target vehicle;

the data storage unit stores data of the initial target position and the final target position.

Compared with the prior art, the vehicle positioning system and method based on the GPS are more accurate in positioning.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive efforts,

wherein:

FIG. 1 is a schematic flow chart of a GPS-based vehicle positioning method according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a GPS-based vehicle positioning system, which comprises a data acquisition unit, a data comparison unit, a data calibration unit and a data storage unit, the data acquisition unit is used for acquiring the road, the driving speed and the time data of a target vehicle, the road, the driving speed and the time data of a passing vehicle and the position and the passing time data of a fixed reference object, the data comparison unit is used for comparing the data of the target vehicle and the passing vehicle acquired by the data acquisition unit to locate the initial target position of the target vehicle, the data calibration unit is used for calibrating the initial target position of the target vehicle and the position and the passing time data of the fixed reference object acquired by the data acquisition unit to locate the final target position of the target vehicle, and the data storage unit is used for storing the data of the initial target position and the final target position.

In this embodiment, the position interval of the fixed reference object acquired by the data acquisition unit does not exceed 50 meters, and the time interval does not exceed 5S.

In this embodiment, the positions of the fixed reference objects acquired by the data acquisition unit are located on both sides of the target vehicle.

In the present embodiment, the data calibration means selects the reference past vehicle 3: 1, in a ratio of 1.

In this embodiment, the GPS-based vehicle positioning system further includes a communication unit, and the communication unit is in communication connection with the cloud platform or the terminal.

Referring to fig. 1, the present invention also provides a GPS-based vehicle positioning method, which provides a GPS-based vehicle positioning system according to the present invention, the method comprising the steps of:

the data acquisition unit acquires road, running speed and time data of a target vehicle, road, running speed and time data of a passing vehicle and position and elapsed time data of a fixed reference object;

the data comparison unit compares the data of the target vehicle and the data of the passing vehicles acquired by the data acquisition unit to locate the initial target position of the target vehicle;

the data calibration unit calibrates according to the initial target position of the positioned target vehicle, the position of the fixed reference object acquired by the data acquisition unit and the elapsed time data, and positions the final target position of the target vehicle;

the data storage unit stores data of the initial target position and the final target position.

Compared with the prior art, the vehicle positioning system and method based on the GPS are more accurate in positioning.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. A GPS-based vehicle positioning system is characterized by comprising a data acquisition unit, a data comparison unit, a data calibration unit and a data storage unit, the data acquisition unit is used for acquiring the road, the driving speed and the time data of a target vehicle, the road, the driving speed and the time data of a passing vehicle and the position and the passing time data of a fixed reference object, the data comparison unit is used for comparing the data of the target vehicle and the passing vehicle acquired by the data acquisition unit to locate the initial target position of the target vehicle, the data calibration unit is used for calibrating the initial target position of the target vehicle and the position and the passing time data of the fixed reference object acquired by the data acquisition unit to locate the final target position of the target vehicle, and the data storage unit is used for storing the data of the initial target position and the final target position.

2. The GPS-based vehicle positioning system of claim 1, wherein the data acquisition unit acquires the positions of the fixed reference objects at intervals of not more than 50 meters and at intervals of not more than 5S.

3. The GPS-based vehicle positioning system of claim 2, wherein the positions of the fixed reference objects acquired by the data acquisition unit are located on both sides of the target vehicle.

4. A GPS-based vehicle positioning system as claimed in claim 3, wherein the data calibration unit selects the reference past vehicle 3 for the past vehicle data: 1, in a ratio of 1.

5. The GPS-based vehicle positioning system of claim 4, further comprising a communication unit, wherein the communication unit is in communication connection with a cloud platform or a terminal.

6. A GPS-based vehicle positioning method, characterized in that a GPS-based vehicle positioning system according to any one of claims 1-5 is provided, the method comprising the steps of:

the data acquisition unit acquires road, running speed and time data of a target vehicle, road, running speed and time data of a passing vehicle and position and elapsed time data of a fixed reference object;

the data comparison unit compares the data of the target vehicle and the data of the passing vehicles acquired by the data acquisition unit to locate the initial target position of the target vehicle;

the data calibration unit calibrates according to the initial target position of the positioned target vehicle, the position of the fixed reference object acquired by the data acquisition unit and the elapsed time data, and positions the final target position of the target vehicle;

the data storage unit stores data of the initial target position and the final target position.

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