Title :
Wireless sensor system based on SAW coded passive devices for multiple access
Author :
Dudzik, E. ; Abedi, A. ; Hummels, D. ; Da Cunha, M. Pereira
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Maine, Orono, ME
Abstract :
This work reports on a wireless sensor system based on coded direct sequence spread spectrum differential delay line surface acoustic wave devices. Spread spectrum techniques were used to interrogate prototype sensor devices with embedded quasi-orthogonal coding, thus allowing multiple device access by the system implemented. A base station unit incorporating analog and reconfigurable digital circuitry has been designed and constructed to interrogate the sensor devices. Sensor and system operation were experimentally verified. The system was validated for temperature sensing.
Keywords :
passive networks; surface acoustic wave sensors; surface acoustic wave transducers; temperature sensors; wireless sensor networks; SAW coded passive devices; coded direct sequence spread spectrum; differential delay line surface acoustic wave devices; embedded quasiorthogonal coding; multiple access; spread spectrum techniques; temperature sensing; wireless sensor system; Acoustic sensors; Acoustic waves; Base stations; Delay lines; Prototypes; Sensor systems; Spread spectrum communication; Surface acoustic wave devices; Surface acoustic waves; Wireless sensor networks; Code division multiaccess; Microsensors; Signal processing; Spread spectrum radar; Surface acoustic wave devices;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0269
