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Core Control and Signal Processing Hub
System Coordination: As the “nerve center” of the ship’s automated control system, it handles precise operations such as navigation, steering gear control, and power regulation. For example, Rolls-Royce’s H1127.0101 modular controller can precisely control dynamic positioning equipment such as azimuth thrusters and tunnel thrusters, and integrates a unified bridge system to optimize the human-machine interface and reduce operator cognitive load.
Signal Processing: Processes multi-source signals from sensors such as radar, electronic charts (ECDIS), and automatic identification systems (AIS) to ensure real-time positioning, navigation, and obstacle avoidance. For example, the flexible FPC circuit boards used on the Fujian aircraft carrier adapt to compact spaces through an ultra-thin and flexible design, supporting dynamic bending scenarios (such as deck machinery and connections of moving parts) while ensuring signal transmission stability.
Multi-axis motion control: For example, the PMAC multi-axis control card uses DSP technology to achieve precise servo control of the ship’s six-degree-of-freedom simulator, steering gear, propellers, etc., supporting multi-axis synchronous operation to ensure navigation stability and dynamic response.
Diesel engine electronic control system: Through electronic control units (ECUs), the injection quantity, injection timing, and exhaust system are adjusted to optimize combustion efficiency, reduce emissions (such as nitrogen oxides and particulate matter), and adapt to the power demands under complex sea conditions.
Power system support and optimization
Power regulation: In the control of the main engine, auxiliary engines, and propellers, the PCB CARD provides circuit support to achieve fuel supply, exhaust system regulation, and motor speed control. For example, the starting and speed regulation of the ship’s main engine relies on a high-efficiency circuit system; the PCB must withstand high temperature, high humidity, and vibration environments to ensure accurate power transmission.
Energy Efficiency Management: Integrating new energy technologies (such as lithium batteries and fuel cells), power modules optimize energy distribution, reducing emissions and improving fuel efficiency, meeting the International Maritime Organization (IMO) requirements for green shipping.
Data Acquisition and Intelligent Processing
Sensor Integration: Incorporating sensors for pressure, level, temperature, and flow (such as ballast water tank level monitoring and LNG fuel supply system pressure transmitters) to achieve real-time ship status data acquisition. For example, MicroSensing’s intelligent pressure transmitter maintains an accuracy of ±0.075%FS under vibration conditions, supporting precise monitoring of ballast water management and exhaust gas desulfurization systems.
Energy Efficiency Management System: Collecting navigation data, energy consumption, and emission information through data acquisition modules (as required by the “Guidelines for Intelligent Energy Efficiency Management of Ships”), and combining big data analysis to optimize speed and loading strategies, improving energy efficiency and reducing carbon emissions.
Navigation and Communication System Foundation
Navigation Support: Supporting Global Navigation Satellite Systems (GNSS, such as BeiDou/GPS), gyrocompasses, autopilots, and other equipment to ensure accurate ship positioning and stable heading. Electronic chart systems rely on PCBs to achieve real-time fusion of chart data and sensor information.
AIS and Communication Modules: Insertable AIS cards permanently embed ship identification codes, enabling real-time ship-to-shore and ship-to-ship communication and dynamic monitoring, preventing tampering or dismantling; satellite communication modules ensure continuous communication during ocean voyages.
Communication Support: Provides stable circuitry for satellite communication terminals (such as INMARSAT-C/B), VHF radios, and search and rescue radar transponders (SART), enabling real-time ship-to-shore and ship-to-ship communication and ensuring navigational safety. Domestically, seagoing vessels are required by regulations to be equipped with Class A/B AIS equipment, using BeiDou technology for dynamic positioning and information exchange.
Power Management and Safety Assurance
Power Modules: Such as the CDHD-60/24III4-J0 power module, providing continuous 60A/24V output, supporting parallel operation of multiple systems (radar, communication equipment, autopilot), with a 98.8% high efficiency conversion rate and 5ms emergency switching capability, ensuring zero-flashover of critical equipment (such as emergency lighting and steering gear) in case of failure.
Safety Systems: Integrating modules such as fire alarm, flood detection, and emergency shutdown devices, achieving rapid signal transmission and linkage control through the PCB board, enhancing the ship’s safety level.
Key Safety System Protections
Safety Monitoring: In systems such as fire alarm, flood alarm, and emergency shutdown, the PCB card is responsible for signal transmission and rapid response. For example, the arc flash protection device monitors the arc flash signal and current increment in the busbar compartment to quickly sever fault arcs, preventing equipment damage and personnel casualties.
Emergency Handling: Supporting safety equipment such as the Voyage Data Recorder (VDR, the ship’s “black box”) and Emergency Position Indicator Beacon (EPIRB), ensuring data traceability and rescue location after an accident. Environmental Adaptability and Reliability Design
Weather Resistance: Complies with international standards such as IEC/EN 60945, possessing resistance to salt spray corrosion, high temperature and humidity, and vibration and shock, adapting to extreme environments from equatorial heat to polar cold. Optimized circuit board materials (e.g., polyimide substrate) and processes (e.g., adhesive-free design) ensure long-term stable operation in the high-salt, high-humidity marine environment.
Electromagnetic Compatibility: Shielding design reduces electromagnetic interference between densely packed equipment on board, ensuring accurate signal transmission and system stability.
Intelligent and Integrated Upgrades
Data-Driven: Supports data logging, fault diagnosis, and performance optimization. Remote monitoring and intelligent adjustment are achieved through Internet of Things (IoT) technology, improving ship operational efficiency and safety.
Modular Design: Employs a modular structure (e.g., PLC control modules, communication modules) for easy system expansion and maintenance, reducing downtime. For example, programmable logic controllers (PLCs) achieve logical operations, sequential control, and seamless integration with industrial control systems through modular design.
Automation and Intelligent Expansion
PLC and Intelligent Interface: Supports Programmable Logic Controller (PLC) expansion modules (such as high-speed counting and closed-loop control modules) to build distributed control systems and achieve automated management of ship power, lighting, entertainment, and other systems.
IoT Integration: Supports low-power, high-durability designs, compatible with IoT technology, and promotes the evolution of ships towards intelligence and sustainability, such as the “ship-as-a-service” model and the application of digital twin technology.
Summary: Ship PCB CARDs are not only the physical carriers of ship electronic systems but also the core technology for achieving automated and intelligent navigation. Their functions extend from basic signal processing to power optimization, safety protection, and intelligent decision-making. Through design and manufacturing that conforms to international standards, they ensure the safe, efficient, and green operation of ships in complex marine environments. With technological advancements, future ship PCB CARDs will further integrate low-power, high-integration, and IoT technologies, driving the shipping industry towards a smarter and more sustainable future.
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