چکیده مقاله
In this research, a seismic sensor for sensing low frequency less than20 Hz with small amplitude about 10 nanometers is developed The sensor is consisted of a mass , spring and an electrical transducer strain gauge to convert the strain to electrical output In experimental model, flat springs are used and strain gauges are installed on them in a place, where the strain is the highest The system resonates at target frequency, and resuets in the highest strain in springs and a high amplitude voltage Using a proper filter, all outputs are eleminated, except the highest one is amplified by electrical circuit In this research, due to low output of metallic strain gauges, semi conductor strain gauge is used The target frequency n ω is adjusted by changing the mass and/or the hardness of spring Results of experiments show satisfactory operation of the transduser
کلیدواژهها
نویسندگان
یوسف حجت
Faculty of Engineering, Tarbiat Modarres University,Tehran
amir abdollah
Faculty of Engineering, Tarbiat Modarres University,Tehran
Mohamadmorad Sheikhi
Faculty of Engineering, Tarbiat Modarres University,Tehran
Seyed shamsedin Mohajerzade
Faculty of Engineering, Tarbiat Modarres University,Tehran
شیوه ارجاع
Hojjat, Yousef and abdollah, amir and Sheikhi, Mohamadmorad and Mohajerzade, Seyed shamsedin,1384,Design and manufacturing of an ultra sensitive seismic sensor,01st Tehran International Congress on Manufacturing Engineering (TICME2005),Tehran
ارائهشده در
مجموعه مقالات اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی ساخت و تولید1 فروردین 1384 · تهران