30 Application of Wireless Protocols Bluetooth and ZigBee in Telemetry System Development Rumiana Krasteva, Ani Boneva, Vesselin Georchev, Ivilin Stoianov* Central Laboratory of Mechatronics and Instrumentation, 1113 Sofia E-mail: veso@clmi.bas.bg * University of Padova, Department of General Psychology, Italy 1. Introduction The paper presents some investigations in the area of wireless communication and wireless protocols applications. This work is connected with joint research project between Central Laboratory of Mechatronics and University of Trieste – “Development of telemetry system for single cell recording in the avian hippocampus”. This project consists of three stages: investigation and choosing a protocol for data transmission; development of a transmitter-receiver system; development of a digital telemetry system. The main goal of this investigation is to find an appropriate solution for data transmission from avian (or flaying birds) hippocampus. The technology used in the University of Trieste is based on cable connection. It is uncomfortable because the cables are twisting and this obstructs the work. It is important to replace the cables and to give a possibility for free moving. For this purpose, the neural signals should be transmitted in a digital way, after appropriate pre-processing: digitalization and compression. Fig. 1 shows the current method for data transfer. As seen from the figure, the cables are connected from the electrode (from chicken’s head) to a recording system (connected to the Personal Computer). The next items present a general description and application of the newest wireless protocols – ZigBee (IEEE 802.15.4 standard) and Bluetooth (IEEE 802.15.1 standard). Some of the wireless technologies can be an unit as Personal Area Network. A personal area network (PAN) is the interconnection of information technology devices within the range of an individual person, typically 10 meters [7]. PAN Technologies include the following protocols:  IrDA;  Bluetooth 802.15.1; БЪЛГАРСКА АКАДЕМИЯ НА НАУКИТЕ . BULGARIAN ACADEMY OF SCIENCES ПРОБЛЕМИ НА ТЕХНИЧЕСКАТА КИБЕРНЕТИКА И РОБОТИКАТА, 55 PROBLEMS OF ENGINEERING CYBERNETICS AND ROBOTICS, 55 София . 2005 . Sofia