Multipoint monitoring of radiation levels

1966 ◽  
Vol 20 (1) ◽  
pp. 110-112 ◽  
Author(s):  
V. S. Zhernov ◽  
E. P. Murashov ◽  
N. V. Ryzhov ◽  
V. M. Skatkin
Keyword(s):  
Multipoint Monitoring

scholarly journals Thermal Mapping of a Lithium Polymer Batteries Pack with FBGs Network

Batteries ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 67 ◽  
Author(s):  
Micael Nascimento ◽  
Tiago Paixão ◽  
Marta Ferreira ◽  
João Pinto
Keyword(s):  
Thermal Management ◽  
Hot Spots ◽  
Lithium Ions ◽  
Lithium Polymer Batteries ◽  
Thermal Mapping ◽  
Discharge Rates ◽  
Fbg Sensors ◽  
Multipoint Monitoring ◽  
First Time

In this paper, a network of 37 fiber Bragg grating (FBG) sensors is proposed for real-time, in situ, and operando multipoint monitoring of the surface temperature distribution on a pack of three prismatic lithium polymer batteries (LiPBs). Using the network, a spatial and temporal thermal mapping of all pack interfaces was performed. In each interface, nine strategic locations were monitored by considering a three-by-three matrix, corresponding to the LiPBs top, middle and bottom zones. The batteries were subjected to charge and discharge cycles, where the charge was carried out at 1.0 C, whereas the discharge rates were 0.7 C and 1.4 C. The results show that in general, a thermal gradient is recognized from the top to the bottom, but is less prominent in the end-of-charge steps. The results also indicate the presence of hot spots between two of the three batteries, which were located near the positive tab collector. This occurs due to the higher current density of the lithium ions in this area. The presented FBG sensing network can be used to improve the thermal management of batteries by performing a spatiotemporal thermal mapping, as well as by identifying the zones which are more conducive to the possibility of the existence of hot spots, thereby preventing severe consequences such as thermal runaway and promoting their safety. To our knowledge, this is the first time that a spatial and temporal thermal mapping is reported for this specific application using a network of FBG sensors.

HF and SO2 Multipoint Monitoring on Large Gas Treatment Centers (GTCs) with Prewarning Abilities

2019 ◽  
pp. 873-878
Author(s):  
Anders Sørhuus ◽  
Sivert Ose ◽  
Eivind Holmefjord
Keyword(s):  
Gas Treatment ◽  
Multipoint Monitoring

scholarly journals Multipoint Monitoring of Amplitude, Frequency, And Phase of Vibrations Using Concatenated Modal Interferometers

2021 ◽  
Author(s):  
Kalipada Chatterjee ◽  
Venugopal Arumuru ◽  
Dhananjay Patil ◽  
Rajan Jha
Keyword(s):  
Photonic Crystal ◽  
Source Spectrum ◽  
Computational Techniques ◽  
Response Signal ◽  
Mechanical Vibrations ◽  
Crystal Fiber ◽  
Sensing System ◽  
Multipoint Monitoring ◽  
Vibration Parameters ◽  
Physical Phenomena

Abstract Concatenated modal interferometers-based multipoint sensing system for detection of amplitude, frequency, and phase of mechanical vibrations is proposed and demonstrated. The sensor probes are fabricated using identical photonic crystal fiber (PCF) sections and integrated along a single fiber channel to act as a compact and efficient sensing system. Each identical probe acts as a modal interferometer to generate a stable interference spectrum over the source spectrum. In presence of external dynamic field about each probe, the probes respond independently, producing a resultant signal that is a superposition of each interferometer response signal. By analysing the resultant signals using computational techniques, the vibration parameters applied to each interferometer are realized. The sensing system has an operation range of 1 Hz-1 kHz with a sensitivity of 51.5 pm/V. Such a sensing system would find wide applications at industrial, infrastructural, and medical fronts for monitoring various unsteady physical phenomena.

Design of Remote Control System

2013 ◽  
Vol 722 ◽  
pp. 397-401
Author(s):  
Fen Fen Cheng
Keyword(s):  
Control System ◽  
Remote Control ◽  
Web Pages ◽  
Community Based ◽  
Remote Control System ◽  
Frequent Switching ◽  
Embedded Web ◽  
Intelligent Community ◽  
Multipoint Monitoring ◽  
And Storage

A multichannel remote control system for intelligent community based on the STC89C54 chip was designed with the technique of embedded Web server. The control system can monitor 255 signals and eight control signals of one node at the same time, and can be connected to the internet by the TCP/ IP protocol. So the field control information can be shown dynamically in a remote computer by way of web pages. The system has high convenience and friendly monitoring interface, then especially is fit for the large community and storage that need multipoint monitoring and frequent switching door.

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