evaluation of a prototype spillway transceiver gordon axel, dr. sandy downing, bruce jonasson, and...
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Evaluation of a Prototype Spillway Transceiver
Gordon Axel, Dr. Sandy Downing, Bruce Jonasson, and Gabriel Brooks
Northwest Fisheries Science CenterFish Ecology Division
NWFSC
Background
• Under an active spill regime, more fish bypass the dams via spillways than through the collection and monitoring facilities
• Based on PIT tag data from adult salmonids returning to Lower Granite Dam, NOAA Fisheries estimates that only 25-35% of the salmonids passing the Snake River dams are currently detected at the collection and monitoring facilities (Faulkner et al. 2013)
Background
• With funding from BPA, NOAA Fisheries contracted Destron Fearing to develop PIT-tag systems for unmodified and modified spillbays
• Destron Fearing provided the first ogee-type transceiver to test in 2011
• Tests compared existing transceivers at the Bonneville Dam corner collector site with the new transceiver
The corner-collector PIT-tag system is unique in many ways: 1) it has the largest antenna in the basin2) it has only one antenna instead of multiple antennas3) it has a specialized transceiver designed specifically for this site
Background
• Fish tests in 2007, 2009, and 2011 to evaluate new PIT tag models
• 2011 we evaluated the prototype ogee transceiver (FS3001) that could detect normal ISO FDX-B tags that are detected in 32 msec as well as tags that can be read in 16 msec
Background
Telegrams: Full telegram
(128 bits)Half telegram
(64 bits)Header 11 10Message 64 32 Data 38 32 Country/Manuf. 10 0 Reserved 14 0 Animal/no Animal 1 0 Trailer Data 1 0CRC 16 16Trailer 24 0Stuffing 13 6
Total bits: 128 64
Fish tests
2011 Results
Test Detected Released % Detected
12mm (BCC) 738 947 77.9
12mm (Ogee) 782 975 80.2
9mm (BCC) 27 217 12.4
9mm (Ogee) 64 261 24.5
16msec-12mm (Ogee) 726 835 86.9
Background
• In July 2011, Destron Fearing was bought by Allflex Corporation
• Allflex put Biomark in charge of all the fisheries work – tags, transceivers, and development work
• Due to the changeover and decision to move installation of the spillway detection system to Lower Granite, development was put on hold
Background
• Upgraded transceivers were tested at Bonneville in 2013, but results were not consistent
• Biomark’s engineers went back to the lab and came back in 2014 with significant changes to the ogee transceiver
• PSMFC testing in Kennewick was conducted and live fish tests at Bonneville occurred in May
• Additional testing occurred at Pasco in June
Transceiver modifications
• Biomark modified the layout of the Microprocessor Control Unit (MCU), power supply, receiver, driver, filters, tuning, and terminal board
• The exciter circuit had slight optimizations implemented and the exciter filters were modified and combined into one module
• The CPU module remained mostly unchanged except for the new phase measurement circuitry
• Multiple changes were made to the FS3001 firmware, with the most significant changes made to the tuning algorithm
Fish tests
Test Detected Released % Detected
32msec-12mm (20A) 455 575 79.1
32msec-9mm (20A) 270 398 67.8
32msec-12mm (23A) 826 971 85.1
32msec-9mm (23A) 614 892 68.8
16msec-12mm 280 300 93.3
16msec-9mm 228 300 76.0
2014 Results
2014 Testing at Pasco
• Field testing continued at Pasco in June
2014 Results
• Achieved a maximum read range of a 54” with the half-telegram tag and 52” with the standard telegram in the dry
• Submerged testing yielded :– A standard tag was detected effectively while
traveling at approximately 60 fps and 24” above the antenna
– A half-telegram tag was detected effectively while traveling at approximately 60 fps and 36” above the antenna.
Transceiver modifications• implement an exciter module capable of operation at
levels from 24 - 48VDC
• incorporate MCU for measuring antenna current, phase and exciter voltage and performing Auto-tuner control
• modified firmware for the FS3001 that will include the implementation of over-current and over-voltage protection
• designing around 150' cables to allow installation at other locations
Summary
• The half telegram tag provides better detectability where EM noise is present or flow velocity is higher
• Transceiver development to be completed in March 2015 with acceptance testing occurring at the end of March
• Further antenna development will begin once the transceiver is completed
• Installation and fish tests at Lower Granite anticipated for 2017 outmigration