Application Workshop - Boat Detection & Positioning
10/02/2011 VEGA Controls Ltd
VEGAMIP Microwave Barrier SwitchAlso used successfully on conveyor overfill, anti-collision, non contact switch, vehicle positioning, item counting. VEGA also supply lock water level differential monitoring.
This application uses a microwave barrier detection system to ensure the correct positioning of boats in locks before the filling and emptying of the chamber.
Main Application Details:
Boat detection through non-contact microwave barrier switches.
Product : River Boat
Vessel: Lock
Height: 4 to 10 m
Temperature: Ambient
Pressure: Atmospheric / Humid Atmosphere
Application:
A canal, river, dock or harbour lock, whatever the size, has the same basic principle. It is a fixed, gated chamber which enables the water inside to be equalised to obtain the same level as either side. This allows boats to cross level differences of up to 30m. Nowadays, to optimise safety during entrance and exit of the boats, the operation of the locks is automated. To proceed with the filling or emptying of the 'chamber', it is vital that the boat is in the correct position to ensure the entrance gate can be closed.
Solution:
The use of a microwave barrier detection system is a safe and effective solution. This non-contact detection system ensures that gates only close when the boat is in position. As the boat enters the chamber it cuts the microwave transmission and, as soon as the signal is restored at both ends, it is clear for the gate to close. To allow for water level variations and boat draught differences, two pairs of barriers are used at different heights. To avoid possible interference, the emitters and receivers of each barrier are mounted inverted. A very low output power means it is safe to use with people in the area.
Technology:
The emitter transmits a focused microwave signal via a horn antenna to the receiver unit on the opposite side. If there is medium between the transmitter and receiver, the signal is damped. This change is detected by the electronics in the receiver unit and converted into a switching command.
Benefits of using non-contact radar in this type of application:
- Robust and compact, range up to 100m
- Unaffected by weather conditions and fouling
- Detects through non-conductive materials (bricks, fiberglass walls, plastic portholes).
See this and many more applications at the Case Studies section on the VEGA website where you can search by your industry sector or technology
Click here to view previous application workshops
VEGA-Controls Ltd, Kendal House, Victoria Way, Burgess Hill, West Sussex, RH15 9NF Great Britain
Phone +44 1444 870055 Fax +44 1444 870080
For more details or technical literature E-mail : info@uk.vega.com
Web : www.vegacontrols.co.uk
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