Moving Object Position Calculation Using Adaptive Sensor Switching
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Solution Overview
Problem
Existing vehicle navigation systems face challenges in accurately calculating the position and orientation of moving objects during unmanned driving, especially when equipped with onboard distance measuring devices, due to factors like calibration status and distance from external sensors, which can lead to reduced detection accuracy.
Innovation Solution
A calculation device that acquires and utilizes sensor information from both onboard and external distance measuring devices, as well as image information, to calculate the position and orientation of moving objects, and generates control signals to manage operation and maintenance based on detection accuracy thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external camera and external distance measuring device are used to calculate position and orientation of moving object, then calculation can be performed without onboard equipment, but calculation accuracy decreases as distance from the moving object increases
Solution Approach 1:
The system dynamically switches between external sensor mode and onboard sensor mode based on whether the moving object is equipped with onboard distance measuring devices. This dynamic adaptation allows the system to optimize measurement accuracy by using onboard sensors when available and external sensors when necessary, resolving the contradiction between versatility and measurement precision.
2Measurement precision
If onboard distance measuring device is used, then calculation accuracy is maintained, but the system requires the moving object to be equipped with specific onboard equipment
Solution Approach 1:
The calculation device is designed to function universally with both equipped and unequipped moving objects. By incorporating equipment information acquisition and conditional processing, the system can adapt its sensor usage strategy, making it applicable to various types of moving objects regardless of their onboard equipment status, thus resolving the contradiction between measurement precision and adaptability.
3Measurement precision
If onboard distance measuring device information is used, then accurate position and orientation calculation is achieved, but the system cannot handle cases where calibration is not completed
Solution Approach 1:
The system incorporates calibration information acquisition and uses this feedback to determine the appropriate calculation method. When calibration is completed, onboard sensor data is used for high-accuracy calculation; when calibration is not completed, the system switches to external sensor data, ensuring reliable operation under all calibration conditions and resolving the contradiction between measurement precision and reliability.
Data Source
AI summary
A calculation device includes: an acquisition unit that acquires sensor information and equipment information; and a calculation unit that calculates at least one of a position and orientation of a moving object using the sensor information, wherein in a first case where the moving object is equipped with an onboard distance measuring device, the calculation unit uses at least onboard distance measuring device information acquired by the onboard distance measuring device as the sensor information, thereby calculating at least one of the position and the orientation of the moving object, and in a second case where the moving object is not equipped with the onboard distance measuring device, the calculation unit uses, as the sensor information, at least one of image information acquired by an external camera installed in a different location from that of the moving object and external distance measuring device information acquired by an external distance measuring device installed in a different location from that of the moving object, thereby calculating at least one of the position and the orientation of the moving object.