A system of electronic monitoring equipment under central computer control records and displays the readouts of environmental-quality instrumentation in clean rooms in the Space Station Processing Facility at Kennedy Space Center. The instruments include airborne-particle counters, temperature, humidity and pressure sensors, and detectors of ammonia and other gases. The monitoring system is readily configurable and expandable; it was developed to replace a system that was based on obsolescent computers and could not accommodate new instruments. The system includes a central data station, assembled from commercial hardware, that receives and records data, provides local and remote graphical user interfaces, provides security features, and prints reports. The central data station is connected to monitoring locations via RS-422 standard electronic communication links. At the monitoring locations, modular converters are used to convert between the RS-422 format and other digital or analog data formats, which include the RS-232 and 0-to-5-volt formats. This is done in order to accommodate instruments that output data in these formats.

This work was done by Paul A. Mogan of Kennedy Space Center and William L. Gill formerly of McDonnell Douglas Space Station Co.

Inquiries concerning rights for the commercial use of this invention should be addressed to

the Technology Programs and Commercialization Office
Kennedy Space Center
(407) 867-6373

Refer to KSC-12044

NASA Tech Briefs Magazine

This article first appeared in the July, 1999 issue of NASA Tech Briefs Magazine.

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