Zero-power magnetometers with remote optical interrogation

Author

Vasquez, Daniel J. ; Judy, Jack W.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

fYear

2004

fDate

2004

Firstpage

109

Lastpage

112

Abstract

A magnetic-field-sensing system that consists of a miniature zero-power magnetometer, an integrated micromachined corner-cube reflector (CCR), commercially available diode laser, and a photo-detector array, has been designed, fabricated, assembled, and tested. The sensor node occupies a volume of only 1.5 mm³ and can detect a magnetic field between 0 to 6 kA/m. The primary application of this technology is in wireless sensing systems that must operate continuously without providing or maintaining the sensor-node energy (e.g., replacing batteries or scavenging energy) or in extremely harsh environments.

Keywords

magnetic field measurement; magnetic sensors; magnetometers; micromechanical devices; 1.5 mm; diode laser; magnetic field sensing system; micromachined corner cube reflector; photo detector array; remote optical interrogation; scavenging energy; sensor node energy; wireless sensing systems; zero power magnetometers; Assembly systems; Diode lasers; Magnetic sensors; Magnetometers; Optical arrays; Optical design; Optical sensors; Semiconductor laser arrays; System testing; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems, 2004. 17th IEEE International Conference on. (MEMS)

Print_ISBN

0-7803-8265-X

Type

conf

DOI

10.1109/MEMS.2004.1290534

Filename

1290534