HVG OFFSHORE EQUIPMENT 0156

HVG OFFSHORE EQUIPMENT 0156: Offshore Wave Buoy

Wave buoy is an anchor data buoy whose body can move with the sea wave movement. The wave height, period and direction can be calculated according to the measurement results from the sensor in the buoy body.

Technical Index:

(1) Measurement Parameters

Wave Height: Range: 0~25m
Accurancy: Indoor±3%, At Sea±10%
Period: Range: 1~100s
Accurancy: Indoor±0.25%, At Sea±10%

(2) Measurement Method:

One Measurement Duration: 14min
Sampling Density during Measurement: 2 times per second
Measurement Time: 8 times a day(according to the need to change the remote control frequency to 24 times), that is, beginning taking samples at the time of one quarter to Beijing time respectively 02,05,08,11,14,17,20,23 o’clock and then end at one minute before those o’clocks.

(3) Data Transmission

Sending Time: every time sent around the whole time after measurement
Communication Frequency: 410MHz
Transmit Power: 5W
Symbol Transimission Rate: 2400 Baud
Anrenna Form:Buoy:High Gain Whip Antenna,5.5dB
The Shore Station: 5 directional antenna unit(Yagi antenna),8dB
Transimission Distance: within 30km. The transmission distance is generally proportional to the installation height (altitude) of the receiving antenna on the shore station. It is about 1km/m.
Sending Data Volume Each Time: 3.4k byte

(4) Data Storage

Buoy Data Storage Capacity: 12M bytes (equivalent to the data of one year)

(5) Power Supply

Battery: YUASA(Japan Yuasa) 12V-7Ah acid maintenance free sealed battery, 8 pieces
Battery Replacement Period: 4 Years
Continous Power Supply Capacity: when there is sunlight, long-term power supply; when it is continous rainy days,buoy can be maintained for 1 months

(6) Riding Light

Type: long life light emitting diade
Visual Distance: 2 nautical miles
Flash Rule: Morse Code “O”
Flash Color: Orange

(7) Dimension Weight

Floating Body Diameter: 1.3m
Buoy Height: 0.44m
Upper Bracket Height: 0.98m
Lower Bracket Height: 1.12m
Flaoting Body Material: 1Cr18Ni9Ti Non magnetic stainless steel
Buoy Total Weight: 190kg ( including the weight of bracket and battery,not including the anchor system)

(8) Woring Environment