Highly sensitive devices for primary signal processing of the micromechanical capacitive transducers

2016 ◽  
Author(s):  
B. Konoplev ◽  
E. Ryndin ◽  
I. Lysenko ◽  
M. Denisenko ◽  
A. Isaeva
Keyword(s):  
Signal Processing ◽  
Highly Sensitive ◽  
Primary Signal ◽  
Capacitive Transducers

scholarly journals Highly Sensitive Signal Processing Devices for Capacitive Transducers of Micromechanical Accelerometers

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 932
Author(s):  
Ryndin ◽  
Konoplev ◽  
Lysenko ◽  
Kulikova ◽  
Popov
Keyword(s):  
Signal Processing ◽  
Dynamic Range ◽  
Frequency Control ◽  
Open Loop ◽  
Project Scheme ◽  
Highly Sensitive ◽  
Lc Oscillators ◽  
Capacitive Transducers ◽  
Control Circuits ◽  
Capacitive Mems

In this paper, the principles of the open-loop frequency-based signal processing devices for capacitive MEMS accelerometers are used to develop three CMOS IP-core (Intellectual Property core) projects of highly sensitive signal processing devices with frequency output. Signal processing devices designed in accordance with the considered method form an output of rectangular pulses whose frequencies equal a difference of signal frequencies from two identical generators with micromechanical accelerometer capacitive transducers in their frequency control circuits. First, the analog project scheme uses two harmonic LC oscillators and an analog mixer to form an output rectangular-shape differential-frequency signal, the frequency of which is dependent on the measured acceleration. Second, the digital project is fully scalable for various CMOS-technologies due to oscillators of rectangular pulses and a digital mixer. Third, the mixed-signal project combines the advantages of the analog and digital projects. The signal processing device projects were developed, modeled and compared to comprehensively solve the problems of increasing sensitivity, dynamic range, noise immunity and resistance to destabilizing factors (e.g., to temperature changes).

scholarly journals Real-time brain activity measurement and signal processing system using highly sensitive MI sensor

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 056635 ◽  
Author(s):  
Kewang Wang ◽  
Changmei Cai ◽  
Michiharu Yamamoto ◽  
Tsuyoshi Uchiyama
Keyword(s):  
Signal Processing ◽  
Real Time ◽  
Brain Activity ◽  
Processing System ◽  
Activity Measurement ◽  
Signal Processing System ◽  
Highly Sensitive

Role of the body in primary signal processing by the electroreceptor system of the skate

1986 ◽  
Vol 17 (5) ◽  
pp. 478-482
Author(s):  
V. M. Gusev ◽  
B. V. Krylov ◽  
T. P. Suvorova
Keyword(s):  
Signal Processing ◽  
The Body ◽  
Primary Signal

scholarly journals System for Automatic Detection and Analysis of Targets in FMICW Radar Signal

2016 ◽  
Vol 67 (1) ◽  
pp. 36-41 ◽  
Author(s):  
Luboš Rejfek ◽  
Zbyšek Mošna ◽  
Jaroslav Urbář ◽  
Petra Koucká Knížová
Keyword(s):  
Signal Processing ◽  
The Netherlands ◽  
Automatic System ◽  
Continuous Wave ◽  
Automatic Detection ◽  
Radar Signal ◽  
The Real ◽  
Experimental Prototype ◽  
Primary Signal ◽  
Operational Frequency

Abstract This paper presents the automatic system for the processing of the signals from the frequency modulated interrupted continuous wave (FMICW) radar and describes methods for the primary signal processing. Further, we present methods for the detection of the targets in strong noise. These methods are tested both on the real and simulated signals. The real signals were measured using the developed at the IAP CAS experimental prototype of FMICW radar with operational frequency 35.4 GHz. The measurement campaign took place at the TU Delft, the Netherlands. The obtained results were used for development of the system for the automatic detection and analysis of the targets measured by the FMICW radar.

Ovarian Dysfunction in Fetally Irradiated Beagles

1977 ◽  
Vol 35 ◽  
pp. 658-659
Author(s):  
T. M. Seed ◽  
M. H. Sanderson ◽  
D. L. Gutzeit ◽  
T. E. Fritz ◽  
D. V. Tolle ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Dose ◽  
Long Term Effects ◽  
Ovarian Dysfunction ◽  
Dose Rates ◽  
Highly Sensitive ◽  
Microscopic Evaluation ◽  
Ovarian Pathology ◽  
Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

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