Hornet Cableway Gauging Systems Set Up and UseDepartment of Primary Industries

and Water

Hobart, Tasmania

31st August 2009

Hornet V Hornet Plus ComparisonFeature 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

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

It may be necessary to connect power to drive control and retrieve traveller block from middle of stream

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)

Hand Winch Mounting Box

Attaches to traveller block

Battery Mounting Boxes

Extension located between traveller block and hoist

Set-Up – Install Hoist

Set-Up – Drive Control InterlockInterlock 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 FeaturesLCD

(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)

LED’s - RED indicates an error - GREEN flashes while

communicating

Hoist Control Switch(raise/lower weight)

Traveller Switch(forward/reverse)

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)

Current meter Input and Output – Hornet Plus only

Operating Frequency – system uses 915MHz licence free radio band

LCD + backlight – backlight can be always OFF, ON or for several seconds horizontal distance data displayed (Basic Hornet)

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

← 10.30m 0.53m/s↨ 3.72m R[ ] H[ ]

L

W

θ

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’

A 3.75 W 2.53mCTD 2.51m 5.5°

Water Flow

Main Cable

Airline

Wetline

θ

Corrected Depth

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

Radio CommunicationsTo current meter counter

Operation - Drive Control System

AC Electric Motor, Encoder & Controller

Drive Control

‘Inter-lock’

Control Box

(side view)

Control Box

(front view)

Portable Generator

(240V or 110V)

Questions??

The ‘Bad Old Days’ are OVER