Shortwave Maritime Management System for Fishing Boat Tracking

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Solution Overview

Problem

Current maritime communication systems, such as the presumptive GMDSS, face challenges in managing ships due to the difficulty in receiving continuous reports from fishing boats, especially in voice communication using high frequency bands, which are affected by ionospheric conditions, leading to loss of contact and poor management of fishing boats.

Innovation Solution

A management system comprising a mobile terminal, multiple base stations, and a management device that uses shortwave transmission and network communication to transmit and receive management information, including identification and position data, facilitating communication between fishing boats and fishery radio communication associations, even in areas where direct communication is difficult.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If voice communication using high frequency band (SSB) is used for fishery radio communication, then communication can be established between land and ships, but reception varies depending on ionosphere condition leading to loss of contact

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidionosphere condition effect

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system changes the frequency parameter from high frequency band (SSB) to shortwave band, which is less affected by ionospheric conditions. This parameter change resolves the contradiction by maintaining communication reliability while avoiding the harmful effects of ionosphere variability.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If presumptive GMDSS with oral reporting three times a day is used for fishing boats under 20 tons, then equipment cost is reduced, but work burden on fishery radio communication association increases

Engineering Contradiction:

Improveequipment costVSAvoidwork efficiency

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The system enables automatic transmission of management information from mobile terminals to base stations without requiring manual oral reporting. This self-service approach reduces equipment costs while eliminating the manual work burden, resolving the contradiction between ease of manufacture and productivity.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system replaces the mechanical voice communication process with automated digital shortwave transmission. Mobile terminals automatically send management information including position data, eliminating the need for manual oral reporting and reducing work burden while maintaining low equipment costs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If manual oral reporting is used in presumptive GMDSS, then equipment cost is reduced, but continuous monitoring of fishing boats becomes difficult

Engineering Contradiction:

Improveequipment costVSAvoidcontact information

Core Design Contradiction:

Ease of manufactureVSLoss of information

Solution Approach 1:

The system enables continuous automatic transmission of management information including position data from mobile terminals to base stations. This continuous action provides real-time monitoring capability while keeping equipment costs low, resolving the contradiction between ease of manufacture and information loss.

Inventive Principle:

Principle #20Continuity of useful action

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

The system enables reliable and efficient management of deep-sea fishing boats by ensuring continuous transmission of position information and management data, improving communication and reducing the burden on fishery radio communication associations, thereby enhancing ship management and safety.

Implementation Method 1

a first processor that executes a first process including transmitting management information including identification information of the mobile terminal using short waves

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS9807572B2Management system and management method

Publication Date: 2017.10.31 FUJITSU LTD

AI summary

A management system includes: a mobile terminal; a plurality of base stations; and a management device. The mobile terminal includes a first processor that executes a first process including transmitting management information including identification information of the mobile terminal using short waves. The base stations include a second processor that executes a second process including first receiving the management information transmitted from the mobile terminal, to transmit the management information to the management device. The management device includes: a third processor that executes a third process including: second receiving the management information transmitted from one or more of the base stations; identifying identification information of the mobile terminal from the received management information; and transmitting the management information to a terminal of the management organization corresponding to identification information of the terminal of the management organization to which the mobile terminal belongs, based on the identified identification information.