Fog Horn Navigation System
The foghorn navigation system is a vital safety device in offshore operations, primarily serving as a positional warning system. Under adverse weather conditions such as rain, fog, or other low-visibility environments, it enables passing vessels to detect the platform in advance and avoid collisions.
The system consists of a foghorn, navigation lights, obstruction lights, detectors, an emergency power supply, and a control unit. With an automated, intelligent, modular, and simplified control architecture, it provides the functions of “sounding in fog and flashing at night,” accurately indicating the platform’s position to passing vessels.
Application Diagram
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The foghorn is installed in unobstructed corners. When external visibility falls below 2 nautical miles, the fog detector is activated and sends feedback to the control system, which in turn triggers the main foghorn to emit sound waves at a specific frequency according to a predefined Morse signal. The auxiliary foghorn has the same function as the main unit. In the event of a main foghorn failure, the control system automatically activates the auxiliary foghorn to issue the warning signal.
Navigation lights are installed at the four corners of the offshore platform. When external illumination drops below 50 lx, the light detector is activated and sends feedback to the control system, which then turns on the four navigation lights to flash simultaneously, marking the platform’s position and serving primarily as a warning to passing vessels.
Obstruction lights are installed at elevated positions on offshore structures, typically on the top of derricks, cranes, or the highest point of a vessel. When external illumination falls below 50 lx, the light detector is activated and sends feedback to the control system, which then turns on the obstruction lights to mark the platform’s position, serving primarily as a warning to low-altitude aircraft and vessels.
Powerful Foghorn
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Reflective body
The design used for the strong sound driver is an optimized technology
based on our company's years of design and manufacturing experience.
It adopts the principle of electric speaker for sound production.
The impedance of the strong sound driver is set at 80, achieving a balance between the electrical acoustic conversion efficiency and reliability of the high-intensity driver.
The magnetic circuit system is designed according to the principles of fluid mechanics to improve heat dissipation efficiency, reduce working temperature, and increase reliability.
The design of the vibration system's working state adopts an innovative asymmetric magnetic drive design to ensure the reliability of the strong sound driver in high-power state and reduce the impact caused by power compression phenomenon.
Strong sound driver
The reflector is a sound wave reflector
that directs the sound in a 360° manner,
ensuring that the signal can be clearly
heard in all directions, thereby expanding
the sound f ield range of the foghorn and enhancing its usage effect.
The reflector employs a unique waveguide calculation method, and the curving lines adopt the optimized curves accumulated through our company's years of experience, further improving the efficiency of electrical-to-acoustic conversion.
All-environment sensing foghorn
Patented 360" acoustic reflector achieves signalwarning without blind spots, and the all-environmentacoustic guidance technology revolutionizes thesafety of ship signals.
Marine-levelexplosion-proof design
The unique explosion-proof form design, with ausage temperature range of -40'C to +50°C.The protection level is lP66. The enclosure is madeof copper-free aluminum + glass fiber polyestermaterial, with high corrosion resistance.
Emergency safety guarantee
This system perceives the external environmentthrough light and fog detectors. The main controlbox of the foghorn determines the start and stopof the obstruction light, navigation light, andfoghorn based on the signals provided by the lightand fog probes, and automatically switches to theemergency battery group for power supply after themain power is cut off.
Retargeting Market
The system can be switched between manual andautomatic modes through the touch screen;After selecting the automatic mode, the system wil!collect fog probe signals and light probe signals inreal time, and determine the working status of the foghorn,navigation light, and obstruction light basedon the signals from the detector, after selecting themanual mode, the foghorn, navigation light, andobstruction light can be controlled manually.
Modular design
This system adopts a modular design. Customers canadd or reduce the configuration ofobstruction lights,navigation lights, and foghorns according to specificneeds to meet the requirements of on-site use.
Reduction oflabor costs
Through the interaction and communication of loT devices,the automated response mechanism reduces the cost ofmanualintervention,enables comprehensive managementon a single platform,saves personnel time,and minimizeslabor costs to the greatest extent.
Savings infacility costs
The foghorn system can be operated directly onthe control box panel, which saves the cost ofequipment for hosting servers. The satellite platformhas eliminated functions such as automatic detectionand control, and has utilized the existing microwaveand fiber broadband on the platform, eliminating thecumbersome cable laying and on-site construction.
Accidentpreventionand safetyassurance
The system, through its audible and visual alarm function,the efficient operation of core hardware facilities such as thevisibility meter and foghorn controller, and automatic alarmin case of faults, can provide real-time warnings to ships andaircraft in foggy or other low-visibility conditions, significantlyreducing the risk of collisions with fixed facilities such asoffshore oil platforms, and protecting the safety of personneand equipment.
Economic benefits and collaborative management
The foghorn management platform connects foghorns, navigationlights, obstruction lights and other hardware devices to the serverfor online management, achieving centralized network managementofthe foghorn alarm system and enhancing the level ofinformationization.It improves the efficiency of maritime traffic management and avoidshuge losses caused by platform shutdown or equipment damage, therebyindirectlyimproving the overall operational efficiency.