Transcript Slide 1

Hornet Cableway Gauging
Systems Set Up and Use
Department of Primary Industries
and Water
Hobart, Tasmania
31st August 2009
Hornet V Hornet Plus Comparison
Feature
Hornet
Hornet Plus
Type of current meter
ADCP only
ADCP OR mechanical
Traversing System
Powered by AC (generator)
Powered by AC (generator)
Hoist System
Powered by 2 x 12V (38ah) deep
cycle batteries
Powered by 2 x 12V (38ah) deep
cycle batteries
Hand Control
3 x AA rechargeable batteries (or
alkaline in an emergency)
3 x AA rechargeable batteries (or
alkaline in an emergency)
Signal processing
No applicable
Cats whisker and magnetic head
types
Signal processing software for
‘clean’ signal
Hoist cable
3mm stainless steel
30 metres of amergraph with C1
connector
Horizontal distance correction
Yes
Yes
Adjustable traversing speed
Up to 1 metre per second
Up to 1 metre per second
Airline / Wetline correction
No
Yes
Maximum span
600 metres
600 metres
Maximum communications range
1000 metres
1000 metres
Hornet (Basic) System
 Suitable for ADCP only
 Used for positioning only
 No airline / wetline correction
feature
 Variable traversing speed
(maximum 1m/sec)
 Wireless hand-control
Hornet Plus System

Suitable for ADCP OR
conventional current meter

Auto-correction of distance and
depth (air / wetline)

Variable traversing speed
(maximum 1m/sec or 3.28ft /sec)

Wireless hand- control

Depth Measurement Resolution
(0.01m OR 0.01ft)

Built-in Signal Processor for
Mechanical Current Meters
Set-Up – Install Hoist Batteries
It may be necessary to connect power to drive control and retrieve traveller block from
middle of stream
Install the 1st battery opposite to the winch side
Secure by locking in pin
Install the hand winch in the battery box with
the slot provided
Install the 2nd battery above the hand winch
and lock in place with pin
Set-Up – Install Hoist
Set-Up –Hoist Extension
Used where operating side platform is ‘high’ above ground level
Minimises OH&S risk from need to lift batteries and hoist to platform
during assembly tasks
Needs to be factored into hand control setting prior to gauging (Hornet
Plus systems only)
Battery Mounting Boxes
Extension located between traveller block and hoist
Hand Winch Mounting Box
Attaches to traveller block
Set-Up – Install Hoist
Set-Up – Drive Control Interlock
Interlock serves 2 main purposes
1. In built ultrasonic proximity sensor prevents traveller
block striking drive control cabinet (when activated)
2. In built ‘tilt’ sensor senses horizontal sag angle for auto
correction of horizontal distance
Ensure underside of main cable
makes contact with BOTH bottom
Interlock studs
Set-Up – Attach ADCP to Hoist
Open bottom cover on hoist and press button on control box to
switch on power to hoist (BLUE L.E.D. is illuminated)
Press Lower
to release
connector
Remove ‘R’
clip and pin
from
connector
Press Lower
and pull down
on connector
Set-Up – Attach ADCP
Operation – Initial Power Up
Apply power to Drive Control System by connecting portable generator
Switch on Hoist (button on control box)
Switch on Hand Control (blue button in
top right hand corner)
Red L.E.D. on the hand control will turn off
once communications have been established
Green L.E.D. will flash as the remote control
communicates between the Hoist and Drive
Control System
Operation - Hand Control Features
LCD
(view Distance, Angles of Sag/Drift,
Speed, Voltage & Status)
Variable Speed Control
Power & Zero Button
(turns power On/Off &
‘Zeroes’ distance/depth
when prompted)
Navigate Menus
(rotate to scroll through
menus and press to select
options)
Traveller Switch
(forward/reverse)
Hoist Control Switch
(raise/lower weight)
LED’s
- RED indicates an error
- GREEN flashes while
communicating
Operation – Brief Description of Controls
Power + Zero – turns unit On/Off
when ‘zero’ is required the user will be prompted with a ‘z’ on the LCD
Traversing Speed – controls speed of traverse (maximum 1 metre per second)
constant speed required for ADCP gauging
Forward and Reverse Traversing – forward (from operating to far side
reverse (from far side to operating side
Raise and Lower – raises and lowers current meter (constant rate)
Red, Green and Blue L.E.D.’s – red indicates a communication problem
green indicates all OK
blue indicates pulses from current meter (Hornet Plus only)
Menu navigation – selection made by ‘rotate and press’
Sounder – Hand Control has in built sounder which beeps for each current meter count (Hornet Plus only)
Operation – Brief Description of Controls
(continued)
LCD + backlight – backlight can be always OFF, ON or for several seconds
horizontal distance data displayed (Basic Hornet)
Current meter Input and Output – Hornet Plus only
Operating Frequency – system uses 915MHz licence free radio band
Operation – Brief Description of Controls
(continued)
NiMh Battery charging – charged by either mains charger or 12VDC ‘cigarette
lighter’ charger provided
alkaline batteries can be used (ensure that charger is
NOT connected
Operation – Menu Operation
Operation - Horizontal Distance Correction

Inclinometer attached to main cable measures ‘angle
of sag’

Trigonometry used to constantly correct ‘raw’
horizontal distance to ‘true’ horizontal distance
‘W = L Cos θ’

Both ‘raw’ and ‘corrected’ distance displayed on
hand control
W
θ
L
← 10.30m 0.53m/s
↨ 3.72m R[ ] H[ ]
Operation - Airline / Wetline Correction

Inclinometer inside hoist constantly measures ‘angle of drift’

Trigonometry used to correct ‘raw’ airline and wetline depth to ‘corrected’
depth

Both ‘raw’ airline / wetline depth, ‘corrected’ depth and ‘corrected depth to
current meter’ displayed on hand control as shown

Corrected depth calculated in accordance with USGS ‘Measurement and
Computation of Stream Flow Vol.1, Water Supply Paper 2175’
Main Cable
θ
Airline
A 3.75 W 2.53m
CTD 2.51m 5.5°
Water Flow
Corrected
Depth
Wetline
Operation - Current Meter Signal
Transmission
(Hornet Plus only)

In-built current meter signal processor (i.e. filters signal)

Continuous signal counting (regardless of communication status)

Any type of current meter counter can be used
To current meter counter
Radio Communications
Operation - Drive Control System
Control Box
Drive Control
(front view)
‘Inter-lock’
Control Box
(side view)
Portable Generator
(240V or 110V)
AC Electric Motor,
Encoder & Controller
Questions??
The ‘Bad Old Days’ are OVER