<Session 5: Wildlife Tracking I>Development of Ultra-Compact Bird-Borne S-band Transceiver for Wild Birds

19–22 May 2022 Kyoto, JapanThe necessity of monitoring of the wilds birds across the border by using ICT is already confirmed in International Telecommunication Union (ITU). We developed a ultra-compact bird-borne S-band transceiver, which the biological information and the positional information of the birds can be obtained by using the bird-to-bird communications and the bird-to-centre communications. This transceiver is composed of Texas Instrument Inc.CC2500 packet communication device and can choose a transmission speed from 1200bps to 500kbps, and can choose a modulation from 2FSK, GFSK, MSK, OOK. We sought the optimal parameter for both communications by using the evaluation experiment

Impulse Turbine with Self-pitch-controlled Guide Vanes for Wave Power Conversion (Effect of Guide Vane Geometry on the Performance)

An impulse turbine with self-pitch-controlled guide vanes has been developed specially for wave energy conversion by the authors. Based on that work, a large turbine of 1 m diameter has been fabricated and operated on the west coast of India. In a practical turbine system, the guide vanes need substantial supports in order to heighten the strength. Such supports affect the performance of the turbine. In this paper, the etfect of guide vane support geometry on starting and running characteristics of the turbine was investigated experimentally. Two types of cross sections of support were studied, that is, circular type and airfoil type. The effect of support length was also studied