Ship Berthing Position Display Using Lidar and Sensor Fusion
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Solution Overview
Problem
Existing technologies struggle to accurately grasp the positional relationship between a ship and its berthing area during docking, which is crucial for safe and smooth berthing operations.
Innovation Solution
An information processing device that acquires measurement data from on-board sensors, particularly lidars, to display the relative positional relationship between the ship and the berthing area, including distances, angles, and movement speeds, using a display device for precise guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional berthing support systems are used, then basic navigation is possible, but accurate grasping of the positional relationship between the ship and berthing area cannot be achieved
Solution Approach 1:
The patent combines multiple measurement devices (lidar, GPS, compass, speed sensor) into an integrated measurement system that collects various spatial parameters simultaneously. This merging of multiple sensing capabilities enables comprehensive acquisition of positional relationship information between the ship and berthing area, resolving the limitation of conventional single-sensor systems.
Solution Approach 2:
The patent transforms spatial relationship information into a two-dimensional display representation showing the ship's position relative to the berthing area. By converting three-dimensional spatial data into a comprehensible visual format with directional indicators and distance measurements, the system enables accurate grasping of positional relationships that were previously difficult to perceive.
2Reliability
If real-time positional data is displayed, then berthing accuracy improves, but system complexity increases
Solution Approach 1:
The display device serves multiple functions: it shows positional information, directional orientation, distance to berthing area, and real-time movement status. By making the display system multi-functional, the patent reduces the need for separate specialized devices while maintaining comprehensive monitoring capabilities, thus improving reliability without proportionally increasing complexity.
Solution Approach 2:
The patent introduces an information processing device as an intermediary that receives data from multiple sensors, processes and integrates this information, and presents it in a unified display format. This intermediary component simplifies the system architecture by centralizing data processing rather than requiring direct integration of multiple specialized subsystems.
3Measurement precision
If multiple measurement devices are integrated, then measurement accuracy improves, but device complexity increases
Solution Approach 1:
The patent performs preliminary processing of measurement data by calculating the bearing angle and distance to the berthing area before display. By pre-computing these critical parameters from raw sensor data, the system reduces the complexity of real-time processing requirements and enables accurate measurement presentation without requiring complex on-the-fly calculations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate and safe berthing by providing real-time visual feedback on the ship's position and movement relative to the berthing area, enhancing the safety and efficiency of docking processes.
Implementation Method 1
measurement data generated by a measurement device provided on a ship
Implementation Method 2
the light irradiated from the lidar and then reflected by the object around the berthing position
Data Source
AI summary
The information processing device includes an acquisition means and a display processing means. The acquisition means acquires measurement data generated by a measurement device provided on a ship. The display processing means performs a process for displaying information relating to a relative positional relationship between the ship and a berthing area on a display device based on the measurement data, the berthing area being an area where the ship should be positioned when the ship is berthed to a berthing place.