Sensor System based on in-fiber Bragg Grats and Interrogator with Spectral Time Channel Separation

2021 ◽  
Vol 23 (5) ◽  
pp. 247-254
Author(s):  
I.L. Borisenkov ◽  
◽  
K.E. Voronov ◽  
G.I. Leonovich ◽  
M.P. Kalayev ◽  
...  

The principle of construction and a variant of the software and hardware implementation of the sensor system based on intra-fiber Bragg gratings (FBG) by the example of temperature measurement are proposed. The use of spectral-time separation of measuring channels, which takes into account the features of the functioning and placement of sensors based on FBGs, can significantly reduce the cost, dimensions, weight and power consumption of the interrogator, and neutralize the difficulties in setting up and periodic calibration typical for serial products. The test results of the system show the directions and prospects of using the developed equipment as part of portable and on-board monitoring and control systems.

2005 ◽  
Author(s):  
Mark C. Edwards ◽  
John Donelson ◽  
Wayne M. Zavis ◽  
Anand Prabhakaran ◽  
David C. Brabb ◽  
...  

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3515
Author(s):  
Sung-Ho Sim ◽  
Yoon-Su Jeong

As the development of IoT technologies has progressed rapidly recently, most IoT data are focused on monitoring and control to process IoT data, but the cost of collecting and linking various IoT data increases, requiring the ability to proactively integrate and analyze collected IoT data so that cloud servers (data centers) can process smartly. In this paper, we propose a blockchain-based IoT big data integrity verification technique to ensure the safety of the Third Party Auditor (TPA), which has a role in auditing the integrity of AIoT data. The proposed technique aims to minimize IoT information loss by multiple blockchain groupings of information and signature keys from IoT devices. The proposed technique allows IoT information to be effectively guaranteed the integrity of AIoT data by linking hash values designated as arbitrary, constant-size blocks with previous blocks in hierarchical chains. The proposed technique performs synchronization using location information between the central server and IoT devices to manage the cost of the integrity of IoT information at low cost. In order to easily control a large number of locations of IoT devices, we perform cross-distributed and blockchain linkage processing under constant rules to improve the load and throughput generated by IoT devices.


Author(s):  
Ігор Бережний ◽  
◽  
Адріан Наконечний ◽  

Based on the research and comparative analysis of existing systems, an algorithm for remote monitoring and control of the technological process using IoT technologies is proposed and developed. We consider a system with flexible algorithms, which combines different data protocols using Wi-Fi technology, which allows you to use this type of system in any industry safely with high speed, energy efficiency and without the cost of communication lines.


Sign in / Sign up

Export Citation Format

Share Document