rainfall (siren activated) flood warning system hanoi, vietnam 7 th november 2008
TRANSCRIPT
Rainfall (Siren Activated) Flood Warning System
Hanoi, Vietnam7th November 2008
BACKGROUND• In 2007, Hydrological Services was approached by Haiduong
Co. Ltd to provide a solution for flood warning
• After careful consideration, the RainTrak, ‘all in one’ rainfall product was offered with some modifications to facilitate a siren and larger solar panel
• Solution required for ‘early’ warning for evacuating villages in northern Vietnam
• 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
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
syphoniRIS220 Data Logger:
- ‘on board’ GSM modem - alarm and control
functions - digital inputs - digital control outputs
(siren) - internal power supply - option for external power
- direct connection to solar - RS232 interface - compact designEnclosure: - IP65 rating - powder-coated steel
SYSTEM PROTOTYPE
MODIFICATIONS UNDERTAKEN
• Large Capacity Solar panel: 12V, 20W
• Large deep cycle battery: 12V, 38aH
• iQUEST iRIS220 Data Logger with specialised alarm software and in-built GSM modem
PROVEN TECHNOLOGY
• HS TB4 Gauge widely used around the world (822 units sold to Thailand Meteorological Service in 2008)
• ‘iRIS’ range of loggers sold to many Water Authorities within New Zealand and Australia
• All equipment will stand up to high temperatures and humidity
• All equipment supplied with 3 years warranty
iQUEST PRODUCT - Client List
SIREN ACTIVATION THRESHOLDS
Threshold No.Rainfall Rate
(mm per 3 hours)
No. of Siren Activations(5 minute intervals)
1 80 1
2 90 2
3 100 3
ALARM PROTOCOLSRainfall Rate
(mm / 3 hrs)
100
80
90
Time
1 Siren Activation
every 5 minutes
2 Siren Activations
every 5 minutes
3 Siren Activations
every 5 minutes
SMS MESSAGE SENT (UP TO 2 PHONE NUMBERS)
Alarm No. 1
Alarm No. 2 Alarm No. 3
SYSTEM SETTINGSSMS Function:
- sends SMS message to 2 pre-programmed phone numbers
- a different message for each alarm criteria
PC Activated ‘Changes’:
- rainfall thresholds for each alarm (e.g. 80mm / 3 hrs)
- number of siren activations for each alarm
- siren activation timing for each alarm (e.g. ON 1 sec / OFF 1 sec)
- siren activation interval (e.g. 5 minute between activations)
- SMS phone number
- Customised SMS message for each alarm
Other Functions:
- direct connection of PC to change parameters / settings
- dial-in connection of PC to change parameters / settings
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)