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DEVELOPMENT OF A LOW-COST GPS HERD ACTIVITY AND WELFARE KIT (HAWK) FOR LIVESTOCK MONITORING
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Proceedings of the Seventh International Symposium, 18-20 May 2005 (Beijing, China) Publication Date 18 May 2005 701P0205.(doi:10.13031/2013.18419)
Authors: J. D. Davis, M. J. Darr, H. Xin, J. D. Harmon, T. M. Brown-Brandl
Keywords: Animal behavior, animal welfare, data logger
The objective of this study was to develop a low-cost, automatic and continuous Herd Activity and Welfare Kit (HAWK). The operational goal for the GPS HAWK was to collect GPS positions and analog sensor data at a user-specified sampling frequency and store it in a secure format. The GPS HAWK uses a Garmin 12-channel, WAAS corrected, low-power GPS receiver with <3 m accuracy. The microcontroller-based system is equipped with six (0-5V single-ended, 10-bit resolution) analog to digital (A/D) conversion channels as well as 16 general purpose I/O pins that can be configured for digital operations or serial communication. Data is stored to an EEPROM device and offloaded daily to a 32MB Compact Flash memory card. Power is supplied using a 6VDC, 7.2Ah sealed lead acid battery. The GPS HAWK was enclosed in a weatherproof enclosure and mounted above the shoulders to provide better satellite visibility to the receiver and to prevent contact with concrete feed bunks in confined animal feeding studies.(Download PDF) (Export to EndNotes)