FPGA implementation of a ZigBee wireless network control interface to transmit biomedical signals

In recent years, cardiac hemodynamic monitors have incorporated new technologies based on wireless sensor networks which can implement different types of communication protocols. More precisely, a digital conductance catheter system recently developed adds a wireless ZigBee module (IEEE 802.15.4 sta...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 332; no. 1; pp. 012007 - 10
Main Authors López, M A Gómez, Goy, C B, Bolognini, P C, Herrera, M C
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 23.12.2011
Subjects
Devices
Field programmable gate arrays
Hemodynamics
Modules
Monitors
Network control
New technology
Personal computers
Physicians
Physics
Power consumption
Protocol (computers)
Wireless networks
Wireless sensor networks
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Summary:In recent years, cardiac hemodynamic monitors have incorporated new technologies based on wireless sensor networks which can implement different types of communication protocols. More precisely, a digital conductance catheter system recently developed adds a wireless ZigBee module (IEEE 802.15.4 standards) to transmit cardiac signals (ECG, intraventricular pressure and volume) which would allow the physicians to evaluate the patient's cardiac status in a noninvasively way. The aim of this paper is to describe a control interface, implemented in a FPGA device, to manage a ZigBee wireless network. ZigBee technology is used due to its excellent performance including simplicity, low-power consumption, short-range transmission and low cost. FPGA internal memory stores 8-bit signals with which the control interface prepares the information packets. These data were send to the ZigBee END DEVICE module that receives and transmits wirelessly to the external COORDINATOR module. Using an USB port, the COORDINATOR sends the signals to a personal computer for displaying. Each functional block of control interface was assessed by means of temporal diagrams. Three biological signals, organized in packets and converted to RS232 serial protocol, were sucessfully transmitted and displayed in a PC screen. For this purpose, a custom-made graphical software was designed using LabView.
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ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/332/1/012007