Boat Shore-Arrival Control with Target Position Correction
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Solution Overview
Problem
Existing boat shore arrival systems require high skill and are limited to specific harbors, making it difficult for inexperienced operators to safely navigate boats to shore, especially in unfamiliar environments.
Innovation Solution
A boat equipped with sensors to detect the surrounding environment, a display to show an environment map, and a controller to determine a possible shore arrival space and correct the target position, allowing automatic navigation to the shore, even in unspecified harbors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shore arrival assistance device using recorded locus is used, then shore arrival can be assisted in specific harbors, but it cannot be used in unspecified harbors and requires high operator skill
Solution Approach 1:
The patent applies universality by enabling the shore arrival assistance device to operate in both specified harbors (with pre-recorded loci) and unspecified harbors (without pre-recorded loci). The controller automatically generates appropriate control signals based on the presence or absence of stored locus information, making the system universally applicable to any harbor environment while maintaining reliable shore arrival assistance functionality.
2Ease of operation
If automatic shore arrival control is implemented, then operator skill requirement is reduced, but the system cannot handle unexpected situations near the shore
Solution Approach 1:
The patent implements feedback by continuously monitoring the boat's position relative to the approach range and the shoreline during automatic shore arrival control. The controller receives real-time position information from the position detector and environment information from the environment detector, and automatically adjusts control signals to the propulsion device based on this feedback, enabling the system to handle unexpected situations while reducing operator skill requirements.
3Reliability
If the boat follows the recorded locus precisely, then shore arrival is assisted, but the boat operation in the vicinity of the shore remains difficult and requires high skill
Solution Approach 1:
The patent applies dynamics by transitioning from static, pre-recorded locus following to dynamic, real-time automatic control. The controller continuously adjusts the boat's trajectory and speed based on real-time position feedback and environment information, automatically generating optimal approach paths that adapt to actual conditions near the shore, thereby making boat operation easier while maintaining reliable shore arrival assistance.
Data Source
AI summary
A sensor that detects a shape of a surrounding environment of a boat and a positional relationship between the surrounding environment and the boat body outputs environment information indicating the shape of the surrounding environment and the positional relationship. A display displays an environment map indicating the surrounding environment. An input accepts an input of a shore arrival target position of the boat body on the environment map and outputs target position information indicating the shore arrival target position. A controller receives the environment information and the target position information, determines a possible shore arrival space of the boat body in the surrounding environment based on the environment information, and corrects the shore arrival target position based on the possible shore arrival space. The controller generates an instruction signal to control a propulsion device so as to cause the boat body to arrive at the shore at the corrected shore arrival target position.