Transcript DISCHARGE RATING VERIFICATION

Rainfall (‘RainTrak’)
Flood Warning System
Hanoi, Vietnam
7th November 2008
BACKGROUND
•In 2007, Hydrological Services was approached by Haiduong Co. Ltd to
provide a solution for flood warning
•Solution required for ‘early’ warning for evacuating villages in northern
Vietnam
•After careful consideration, the RainTrak, ‘all in one’ rainfall
product was offered with some modifications
•Product design was a ‘combined effort’ between Hydrological Services
Australia and Haiduong Co. Ltd, Hanoi, Vietnam
•A ‘prototype’ system was sent to Vietnam for evaluation and demonstration
SYSTEM DESIGN CRITERIA
‘TB4’ Tipping Bucket Rain Gauge:
- accuracy +/-2% 25 to 300mm/hr; +/- 3% 300-500mm/hr
- maximum range 500mm/hr
- stainless steel bucket pivots
- metal enclosure/catch with syphon
ML1 Data Logger:
- external GSM modem (Wavecom)
- digital input
- internal power supply
- option for external power
- RS232 interface
- compact design
Enclosure:
- IP65 rating
- powder-coated steel
PROVEN TECHNOLOGY
•HS TB4 Gauge widely used around the world (822 units sold to
Thailand Meteorological Service in 2008)
•‘Minilog’ range of loggers sold to Water Authorities within
South East Asia and Australia (1200 units provided to
Queensland Department of Water Resources in 2007 and
2008)
•All equipment will stand up to high temperatures and
humidity
•All equipment supplied with 3 years warranty
SYSTEM PROTOTYPE
MODIFICATIONS UNDERTAKEN
•Large Capacity Solar panel: 12V, 20W
•Large deep cycle battery: 12V, 38aH
SYSTEM SETTINGS
Dial-In Function:
- allows user to dial-in for rainfall readings
- allows user to dial-in to re-configure logger
TEST DATA
Haiduong 0012345 ML8037 0.2
28/07/2008 8:25
28/07/2008 8:25
28/07/2008 8:25
28/07/2008 9:05
28/07/2008 9:05
28/07/2008 9:05
28/07/2008 9:05
28/07/2008 9:05
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
POWER SUPPLY DATA
•
Average continuous power consumption = 10mA (approximately)
•12V: 38aH battery will last in excess of 3 months without solar charging
•20 watt solar panel will fully charge the battery (with 4-5 days of good solar
exposure)