High-precision positioning system

Abstract

The invention relates to the technical field of positioning, in particular to a high-precision positioning system which comprises a satellite positioning unit, a cellular network positioning unit, an ultra-wideband positioning unit, an analysis processing unit and a track generation unit which are arranged on a vehicle. Through combination of multiple positioning means, accurate positioning of the position of the transport vehicle is achieved, the high-precision driving track of the transport vehicle is obtained, and the method has important significance in improving the transport efficiency, enhancing the cargo safety, improving the customer satisfaction and reducing the operation cost.

Description

Technical Field

[0001] The present invention relates to the field of positioning technology, and in particular to a high-precision positioning system. Background Art

[0002] Transport vehicle tracking and positioning plays a vital role in modern logistics and supply chain management. Logistics companies can monitor the location and driving status of vehicles in real time, effectively reducing waiting and delay time. Accurate positioning of transport vehicles is of great significance to improving transportation efficiency, enhancing cargo safety, improving customer satisfaction and reducing operating costs.

[0003] The current vehicle navigation and positioning system is based on GNSS positioning, which uses the distance from the satellite to the ground receiving station to determine the ground position through distance intersection. Its advantages are all-weather, high-precision, and suitable for open and unobstructed environments. However, it has the risk of disconnection in environments such as signal loss and electromagnetic interference, and its cost is relatively high.

[0004] Based on this, this solution provides a high-precision positioning system that combines multiple methods to improve positioning accuracy and reliability, playing a greater role in the fields of logistics and supply chain management. Summary of the invention

[0005] 1. Technical issues

[0006] The present invention aims to at least solve the problem in the prior art that the positioning accuracy of transport vehicles is insufficient when traveling on roads.

[0007] (II) Technical content

[0008] This solution provides a high-precision positioning system, which is achieved by the following specific technical means, including:

[0009] A satellite positioning unit installed on the vehicle is used to locate the driving path of the vehicle;

[0010] A cellular network positioning unit, wherein the cellular network positioning unit uses the base station signal strength and time difference in the mobile communication network to determine the position of the vehicle;

[0011] An ultra-wideband positioning unit, wherein the ultra-wideband positioning unit uses the high time resolution characteristics of ultra-wideband signals to calculate the distance by measuring the signal propagation time, thereby achieving high-precision positioning;

[0012] An analysis and processing unit, which receives the time difference between the satellite positioning unit, the cellular network positioning unit, the ultra-wideband positioning unit and the vehicle in sending and receiving signals, and integrates, processes and analyzes the received information;

[0013] A trajectory generating unit generates a vehicle driving trajectory using the information processed by the analyzing and processing unit.

[0014] Preferred technical solution 1: a user interface module, wherein the user interface module is used to display the vehicle driving trajectory information generated by the trajectory generation unit to the user in a graphical manner.

[0015] Preferred technical solution two: a vehicle management unit, the vehicle management unit includes an alarm module and a monitoring module, and the vehicle management unit is used to monitor the safe driving status of the vehicle.

[0016] Preferred technical solution three: The ultra-wideband positioning unit includes a UWB tag set on the vehicle and a certain number of UWB base stations deployed on the highway;

[0017] The UWB base stations are deployed on expressways, especially in key locations such as tunnels and parking lots.

[0018] After receiving the signal sent by the UWB tag, the UWB base station transmits the data to the analysis and processing unit for processing.

[0019] Preferred technical solution 4: the monitoring module is used to obtain vehicle data;

[0020] The vehicle data includes various safety indicator data.

[0021] Preferred technical solution five: the alarm module is connected to the monitoring module;

[0022] The alarm module is used to send warning information to the driver.

[0023] Preferred technical solution six: a database, wherein the database is used to store data such as vehicle information, driver information, and transportation task information.

[0024] Preferred technical solution seven: the satellite positioning unit uses the GPS positioning system or the Beidou positioning system.

[0025] (III) Technical Effect

[0026] The above structure enables this solution to have the following beneficial effects:

[0027] 1. Through the combination of multiple positioning methods, the precise positioning of the transport vehicle can be achieved, and the high-precision driving trajectory of the transport vehicle can be obtained;

[0028] 2. It is of great significance to improve transportation efficiency, enhance cargo safety, improve customer satisfaction and reduce operating costs;

[0029] 3. Realize dynamic monitoring of vehicles and increase different angles of vehicle monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the system structure of this solution.

[0032] Among them, 1. Satellite positioning unit;

[0033] 2. Cellular network positioning unit;

[0034] 3. Ultra-wideband positioning unit; 301. UWB tag; 302. UWB base station;

[0035] 4. Analysis and processing unit;

[0036] 5. Trajectory generation unit;

[0037] 6. User interface module;

[0038] 7. Vehicle management unit; 701. Alarm module; 702. Monitoring module;

[0039] 8. Database. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 , high-precision positioning system, including:

[0042] A satellite positioning unit 1 disposed on the vehicle calculates the three-dimensional position (longitude, latitude and altitude) of the UAV by receiving signals from at least four satellites, which is used to locate the driving path of the vehicle;

[0043] The satellite positioning unit 1 uses the GPS positioning system and the Beidou positioning system;

[0044] A cellular network positioning unit 2, wherein the cellular network positioning unit 2 uses the base station signal strength and time difference in the mobile communication network to determine the location of the vehicle; the base station positioning module is preferably a 5G signal station;

[0045] Cellular network positioning is suitable for indoor use, such as parking lots and tunnel environments, to make up for the shortcomings of satellite positioning;

[0046] An ultra-wideband positioning unit 3, wherein the ultra-wideband positioning unit 3 uses the high time resolution characteristics of ultra-wideband signals to calculate the distance by measuring the signal propagation time. The UWB technology uses extremely narrow pulse signals or extremely wide spectrum bandwidth signals to transmit information, thereby achieving high-precision positioning;

[0047] Ultra-wideband positioning has strong penetration, good anti-interference performance and high positioning accuracy;

[0048] An analysis and processing unit 4, wherein the analysis and processing unit 4 receives the time difference between the satellite positioning unit 1, the cellular network positioning unit 2, the ultra-wideband positioning unit 3 and the vehicle in sending and receiving signals, and integrates, processes and analyzes the received information;

[0049] The trajectory generating unit 5 generates a vehicle driving trajectory using the information processed by the analyzing and processing unit 4 .

[0050] See also Figure 1 , high-precision positioning system, user interface module 6, the user interface module 6 is used to display the vehicle driving trajectory information generated by the trajectory generation unit 5 to the user in a graphical manner for the user to view in real time.

[0051] See also Figure 1 , a high-precision positioning system, a vehicle management unit 7, the vehicle management unit 7 includes an alarm module 701 and a monitoring module 702, and the vehicle management unit 7 is used to monitor the vehicle status;

[0052] The monitoring module 702 is used to obtain vehicle data, such as monitoring the vehicle's driving speed, the surrounding environment of the parking location, fatigue driving and other safety indicators;

[0053] By monitoring the vehicle speed and analyzing the vehicle position, determine whether the vehicle is speeding;

[0054] The surrounding environment of the vehicle parking position is collected by using a camera installed on the vehicle. If an abnormality is found in the parking spot, it is fed back to the vehicle management unit 7 for analysis to avoid illegal parking incidents;

[0055] The alarm module 701 is used to send a warning message to the driver when the data obtained by the monitoring module 702 does not meet the safety index, so as to remind the driver and promote the driver to drive safely.

[0056] See also Figure 1 , a high-precision positioning system, wherein the ultra-wideband positioning unit 3 includes a UWB tag 301 set on the vehicle and a certain number of UWB base stations 302 deployed on the highway, and multiple groups of UWB base stations 302 are used to ensure that they can communicate with each other and cover the road;

[0057] After receiving the signal sent by the UWB tag 301, the UWB base station 302 measures the arrival time and strength of the signal, and transmits these data to the analysis and processing unit 4 for processing. The analysis and processing unit 4 calculates the position of the UWB tag 301 based on the received data, and finally displays the position information to the user in a graphical manner through the trajectory generation unit 5.

[0058] See also Figure 1 , high-precision positioning system, database 8, the database 8 is used to store data such as vehicle information, driver information, transportation task information, etc., and supports efficient data query and statistical analysis.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision positioning system, characterized in that: include: A satellite positioning unit (1) arranged on the vehicle, used to locate the driving path of the vehicle; A cellular network positioning unit (2), wherein the cellular network positioning unit (2) uses base station signal strength and time difference in the mobile communication network to determine the position of the vehicle; An ultra-wideband positioning unit (3), wherein the ultra-wideband positioning unit (3) utilizes the high time resolution characteristics of the ultra-wideband signal to calculate the distance by measuring the signal propagation time, thereby achieving high-precision positioning; An analysis and processing unit (4), wherein the analysis and processing unit (4) receives the time difference between the signals sent and received by the satellite positioning unit (1), the cellular network positioning unit (2), the ultra-wideband positioning unit (3) and the vehicle, and integrates, processes and analyzes the received information; A trajectory generating unit (5), wherein the trajectory generating unit (5) generates a vehicle driving trajectory using the information processed by the analyzing and processing unit (4).

2. A high-precision positioning system according to claim 1, characterized in that: A user interface module (6) is used to display the vehicle driving trajectory information generated by the trajectory generation unit (5) to the user in a graphical manner.

3. A high-precision positioning system according to claim 2, characterized in that: A vehicle management unit (7), the vehicle management unit (7) comprising an alarm module (701) and a monitoring module (702), the vehicle management unit (7) being used to monitor the safe driving status of the vehicle.

4. A high-precision positioning system according to claim 1, characterized in that: The ultra-wideband positioning unit (3) comprises a UWB tag (301) arranged on a vehicle and a certain number of UWB base stations (302) deployed on a highway.

5. A high-precision positioning system according to claim 3, characterized in that: The monitoring module (702) is used to obtain vehicle data.

6. A high-precision positioning system according to claim 5, characterized in that: The alarm module (701) is used to send a warning message to the driver when the data acquired by the monitoring module (702) does not meet the safety index.

7. A high-precision positioning system according to claim 3, characterized in that: A database (8), wherein the database (8) is used to store data such as vehicle information, driver information, and transportation task information.

8. A high-precision positioning system according to claim 1, characterized in that: The satellite positioning unit (1) uses the GPS positioning system and the Beidou positioning system.

9. A high-precision positioning system according to claim 1, characterized in that: The base station positioning module is preferably a 5G signal station.

Images