On Quality Enhancement in Seismic Testing Laboratories based on Efficient IT Infrastructure Deployment

Transcription

1 On Quality Enhancement in Seismic Testing Laboratories based on Efficient IT Infrastructure Deployment 2 nd Contribution M.H. Zaharia, Assoc Prof. TUIasi

2 Main Aspects of IT infrastructure in EE Labs 1. Usual IT infrastructure in EE Labs (room, equipment & products) Telepresence room (audio & video) On site monitoring/video network Datacenter 2. Needed processes in IT in EE Lab Sensor Calibration DAQ (data acquisition) - Software quality assurance Standards used for specific instrumentations

3 Sensor calibration Producer support Calibration hardware level support (sometimes); Calibration protocols and tables (anytime). EE experts Fine tune of existing calibration data and protocols; Sometime development from scratch of calibration protocols (even hardware supplementary equipment) and are required. Minimal standards to comply: ISO/IEC 17025, ISO Regarding sensor communications: only difficulties - RS232 which have to comply with standards: DIN VDE 100, DIN VDE800, DIN43629 and DIN EN

4 DAQ Software Quality Assurance Tricky / difficult business!! Provided partial or total by hardware producer (e.g. Nat Inst., NI see site: Usually meet the quality assurance standards because in the worst case they give detailed methodologies about how the job can be done. Developed on site by EE Expert Problems - in case of required supplementary certification, if needed! Minimal Required Compliance wit Standards: ISO 9001:2008 and IEEE/ANSI: Standard for Software Quality Assurance Plans, 730:2002 Standard of Software Unit Testing 1008 Standard for Software Test Documentation 829

5 Onsite Video Network During the experiment, test specimen is remotely analyzed within a complex network of high and /or medium precision cameras. Regarding video cameras the following standards must be analyzed if suitable: IEEE Standard on Video Techniques: Measurement of Resolution of Camera Systems, 1993 ISO/IEC Information technology Coding of audio-visual objects ISO/IEC JTC1/SC29/WG11 CODING OF MOVING PICTURES AND AUDIO ISOCD Information Technology. Coding of Moving Pictures and Associated Audio for Digital Storage Media at up to about 1.5 Mbit/s (1993). ITU-T Recommendation H.264 ISO/IEC :2005. Series H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS. Infrastructure of audiovisual services - Coding of moving video. Advanced video coding for generic audiovisual services.

6 Onsite video network Related to Equipment needed for Communication Network, one have to analyze, select & comply with following standards: TIA TSB-162 for cabling between LAN equipment and WAPS, including pathways and spaces to support the cabling and wireless AP s ISO/IEC and TIA's TSB-162 for cabling IEEE 802.3af (at) PoE (Power over Ethernet) for communications

7 An example of IT infrastructure that can be used in EE Labs

8 Telepresence room video The solution regarding telepresence are nowadays in front of new age of next two or three years. There will be for sure improvement in its quality and also the actual unaffordable prices will suffer a deflation. Some problems regarding calibration solvable using Standard Calibration Box List of standards to comply with: SMPTE 370M-2002 for Television - Data Structure for DV-Based Audio, Data and Compressed Video at 100 Mb/s, 1080/60i, 1080/50i, 720/60p (07/02). SMPTE 370M-2006 for Television - Data Structure for DV-Based Audio, Data and Compressed Video at 100 Mb/s, 1080/60i, 1080/50i, 720/60p, 720/50p. The Society of Motion Picture and Television Engineers (04/06). IEEE 802.1Q VLAN tagging, encapsulation and CoS 802.1Q specification trunking encapsulation 802.1w RSTP (Rapid Spanning Tree Protocol) 802.3ad LACP (Link Aggregation Control Protocol) 802.3af PoE (Power over Ethernet) specification

9 Telepresence room audio Regarding Audio in Telepresence - following standards have to ne analyzed a priori system design: BS.1284 : General methods for the subjective assessment of sound quality ITU (International Telecommunication Union) BS.1387 : Method for objective measurements of perceived audio quality ITU BS.1423 : Guidelines for producing multichannel soundtracks using surround matrix techniques ITU BS.1548 : User requirements for audio coding systems for digital broadcasting ITU BS.1873 : Serial multichannel audio digital interface for broadcasting studios ITU

10 Suitable Datacenter Location Minimal standards: TIA942, ASHRAE data books, the ones of Uptime Institute TUI, Telcordia standards like GR-63- CORE and European standard EN

11 Datacenter room distribution - The TIA approach - supplemented by a special room for control, acquisition command & control equipment. - Special room for telepresence was added. - Data center - needs of specifications between tier one and tier two from TIA 942 standard.

12 Q requirements for Datacenter Design (1) The racks standard shall be 42U with compliance on Telcore GR-63-CORE standards. The design of data center has two constraints related to the seismic experiments to be done in the future. During the operational phase the equipment needed for experiments are as well exposed to relative high vibration characterized, by high frequencies and important peak ground accelerations (PGA). The standard used for datacenters design considers that a major seismic event (real one) can be afforded once in a lifetime, considered around 20 years. In the present time, there are insufficient data regarding fully equipped datacenter behavior in case of occurrence of a major seismic event.

13 Q requirements for Datacenter Design(2) As an example, the Kobe earthquake had unexpected and unpleasant effects on different datacenters, located around. The weak point seems to be especially at level of the raised technical floors of the construction [Rasmussen, 2010]. Taking into account this consideration it is recommended to design a relatively high dense IT infrastructure in datacenters. After conducting surveillance on existent solutions on the market we can conclude that the rack producers tests done on a single rack, excited by a signal for real earthquake are not sufficient, since it should be considered the test of a fully deployed datacenter.

14 Q requirements for Datacenter Design (3) For design of datacenter some of the following solutions are to be considered: The use of special design for datacenter building which have the role to absorb the majority of seismic effects (like using inertial dumpers, rubber based foundation or other suitable approach) The use of ceiling cabling to avoid the raised floor and anchor racks directly in the foundation The considerations of technological floor re-design and racks links to them, in order to increase the seismic resistance of the whole structure.

15 Q requirements for Datacenter (4) The other problems like fire, water flood, humidity, gases and temperature are well specified in standard. The selected solutions use the tier two specifications regarding threats from TIA 942. For cabling - EU standard EN must be used. For first two zones in network trunk distribution unimode fiber optic are recommended; GR-326 standard may be used.

16 Q requirements for Datacenter (5) Regarding the datacenter availability there are some redundancy measures, specific at least for tier two, token like ups, ups, N+1 power supply and so on. This are obtained by conforming to ISO 9001, or TIA 942 and ASHRAM documents a.s.o.

17 Some final remarks The complexity of required IT infrastructure for EE laboratories need the to comply with the specific standards previously presented. The role of IT will increase in the years to came at the EE laboratories level. The existing standards referring to requirements to be fulfilled by datacenter under located in seismic active area should be examined and may be changed (see Kobe earthquake effects on datacenter example).