Autonomous Vehicle Positioning Mode Selection for Lower-Cost Driving
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Solution Overview
Problem
The high cost of achieving high positioning precision in self-driving vehicles, which is necessary for safety, poses a challenge in reducing the overall cost of motor vehicle self-driving systems.
Innovation Solution
A terminal device that compares the positioning precision of different modes (such as GPS and base station combinations) and determines a target positioning mode with higher precision, allowing vehicles to operate using the most cost-effective mode while ensuring safety by determining a corresponding target driving parameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If network-assisted GPS positioning mode is used to ensure high positioning precision, then positioning precision is improved, but hardware costs and system complexity increase
Solution Approach 1:
The patent introduces a terminal device as an intermediary that performs positioning calculations externally. The vehicle only needs to send raw measurement data (satellite signals, base station signals) to the terminal device, which then computes the positioning results. This mediator approach allows the vehicle to achieve high positioning precision without equipping complex positioning hardware, as the computational burden is transferred to the terminal device.
Solution Approach 2:
The patent extracts the complex positioning computation function from the vehicle system and relocates it to an external terminal device. The vehicle retains only the minimal necessary hardware for signal reception, while the terminal device performs the sophisticated positioning algorithms. This extraction resolves the contradiction by separating the measurement function (kept in vehicle) from the computation function (moved to terminal).
2Measurement precision
If network-assisted GPS positioning mode is used to ensure high positioning precision, then positioning precision is improved, but operational costs increase
Solution Approach 1:
The terminal device acts as a cost-effective intermediary that consolidates positioning resources. Instead of each vehicle requiring expensive positioning hardware and subscriptions, multiple vehicles can share the terminal device's positioning capabilities. This mediator approach reduces per-vehicle costs while maintaining high positioning precision through centralized computation.
Solution Approach 2:
The terminal device provides universal positioning services to multiple vehicles, making the system more cost-effective. By serving multiple vehicles with a single terminal device, the positioning capability becomes a shared resource, reducing the overall cost burden on individual vehicles while maintaining high positioning precision for all users.
Data Source
Figure 1
Figure 2~3
AI summary
A motor vehicle self-driving method and a terminal device are disclosed. The method includes: obtaining, by a terminal device, first vehicle information of a first motor vehicle, where the first vehicle information includes a first positioning mode and a first driving route (S110); obtaining, by the terminal device, second vehicle information of a second motor vehicle, where the second vehicle information includes a second positioning mode and a second driving route (S120); determining, by the terminal device, whether the first driving route overlaps with the second driving route (S130); when the first driving route overlaps with the second driving route, comparing, by the terminal device, positioning precision of the first positioning mode with positioning precision of the second positioning mode (S140); determining, by the terminal device, a positioning mode with higher positioning precision in the first positioning mode and the second positioning mode as a target positioning mode (S150); determining, by the terminal device, a target driving parameter based on the target positioning mode (S160); and controlling, by the terminal device, the first motor vehicle and the second motor vehicle to drive based on the target driving parameter (S 170). The method can reduce costs while ensuring vehicle safety.