Low-power operation of a barometric pressure sensor for use in an automatic fall detector

2016 ◽  
Author(s):  
Wei Lu ◽  
Changhong Wang ◽  
Michael C Stevens ◽  
Stephen J Redmond ◽  
Nigel H Lovell
Keyword(s):  
Low Power ◽  
Pressure Sensor ◽  
Barometric Pressure ◽  
Power Operation ◽  
Fall Detector

Low-Power Fall Detector Using Triaxial Accelerometry and Barometric Pressure Sensing

2016 ◽  
Vol 12 (6) ◽  
pp. 2302-2311 ◽  
Author(s):  
Changhong Wang ◽  
Wei Lu ◽  
Michael R. Narayanan ◽  
David Chan Wei Chang ◽  
Stephen R. Lord ◽  
...  
Keyword(s):  
Low Power ◽  
Barometric Pressure ◽  
Pressure Sensing ◽  
Fall Detector

Low Power and High Sensitivity MOSFET-Based Pressure Sensor

2012 ◽  
Vol 29 (8) ◽  
pp. 088501 ◽  
Author(s):  
Zhao-Hua Zhang ◽  
Tian-Ling Ren ◽  
Yan-Hong Zhang ◽  
Rui-Rui Han ◽  
Li-Tian Liu
Keyword(s):  
Low Power ◽  
Pressure Sensor ◽  
High Sensitivity

scholarly journals A new method for D2O to H2O leak detection and identification of leaky heat exchanger in PHWR by Cerenkov photon counting technique

2018 ◽  
Vol 33 (4) ◽  
pp. 325-333 ◽  
Author(s):  
Blangat Dileep ◽  
Ravi Mana ◽  
Karunakara Nerugundi ◽  
Sangameshwar Managanvi ◽  
Raj Tripathi
Keyword(s):  
Heat Exchanger ◽  
Low Power ◽  
Heat Exchangers ◽  
Count Rate ◽  
Liquid Scintillation ◽  
Leak Detection ◽  
Cherenkov Photon ◽  
Photon Count ◽  
Detection And Identification ◽  
Power Operation

In pressurized heavy water reactors, leaks from D2O primary coolant and moderator to H2O secondary coolant and other light-water systems in heat exchangers cannot be completely ruled out. High cost of D2O demands that its loss should be prevented to maximum extent possible. Traditionally D2O leak detection and identification of leaky heat exchanger is carried out by measurement of tritium activity in H2O. Since tritium emits low energy beta radiation, its concentration in H2O is measured by mixing it with liquid scintillation solution in a definite proportion in counting vial and counted in a Liquid Scintillation Analyzer. It is very sensitive method for leak detection, but identification of leaky heat exchanger is time consuming and may require low power operation or reactor shut down. In the new method, high energy beta emitting fission products, which emit Cherenkov photons in H2O, were used as the tracer. H2O was poured in 20 mL plastic vials without scintillator and counted on Liquid Scintillation Analyzer. D2O leak was identified by comparing the Cherenkov photon count rate with that of the blank. A discrimination ratio significantly higher than average Cherenkov photon count rate for all heat exchangers was used to identify the leaky one. The technique has advantageous over existing method of D2O leak detection, such as, (1) scintillation chemicals are not required (2) low power operation or reactor shut down is not required for identifying the leaky heat exchanger (3) no generation of radioactive chemical waste (4) on-power leak identification reduces generation of radioactive liquid waste.

Hybrid GC-eDRAM/SRAM Bitcell for Robust Low-Power Operation

2017 ◽  
Vol 64 (12) ◽  
pp. 1362-1366 ◽  
Author(s):  
Robert Giterman ◽  
Adam Teman ◽  
Pascal Meinerzhagen
Keyword(s):  
Low Power ◽  
Power Operation

Reconfigurable Multicore Server Processors for Low Power Operation

2009 ◽  
pp. 247-254 ◽  
Author(s):  
Ronald G. Dreslinski ◽  
David Fick ◽  
David Blaauw ◽  
Dennis Sylvester ◽  
Trevor Mudge
Keyword(s):  
Low Power ◽  
Power Operation
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