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Development of intelligent instruments with embedded HTTP servers for control and data acquisition in a cryogenic
Joby Antony1, D S Mathuria1, T S Datta1
1Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
The Review of Scientific Instruments
|January 3, 2016
Summary
Ethernet-based embedded instruments automate cryogenic systems for linear accelerators, eliminating traditional hardware. This system offers remote control and data acquisition for enhanced automation in scientific research.
Area of Science:
- * Automation technology
- * Control systems engineering
- * Scientific instrumentation
Background:
- * Ethernet and Hypertext Transfer Protocol (HTTP) are widely adopted communication standards in automation.
- * Traditional crate-based control architectures can be cumbersome for certain applications.
- * There is a need for integrated, intelligent systems for remote control and data acquisition.
Purpose of the Study:
- * To describe the indigenous development of a cryogenic control system for a linear accelerator.
- * To showcase the implementation of Ethernet-based embedded instruments for automation.
- * To demonstrate a crate-less control and data acquisition architecture.
Main Methods:
- * Development of in-house Ethernet-based embedded cryogenic instruments acting as intelligent meters (device-servers).
- * Utilization of ARM and ATMEL processors with COTS SMD components for instrument design.
- * Implementation of analog sensor front-ends and digital back-end web servers with remote procedure call over HTTP.
- * Deployment of 24 instruments with 58 embedded servers for closed-loop operations across a control Local Area Network (LAN).
- * Design of six categories of instruments for cryogenic applications, including features for remote operation in radiation areas.
Main Results:
- * Successful implementation of a Complete Automation of Distribution System (CADS) for a linear accelerator's cryogenic distribution.
- * 24 intelligent instruments with embedded servers deployed, managing sensor-actuator combinations for closed-loop control.
- * Remote monitoring, logging, control, and analysis of data from a central control room via a LabVIEW interface.
- * Elimination of the need for external Programmable Logic Controllers (PLCs) or similar hardware.
Conclusions:
- * Ethernet-based embedded systems provide an effective solution for advanced cryogenic control and automation.
- * The developed CADS architecture offers advantages in terms of integration, remote accessibility, and hardware reduction.
- * This approach is suitable for medium-scale cryogenic automation setups in scientific research facilities.
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