Donald John Frey
Engineers at Sunnyside Pl, Boulder, CO

License number
Colorado 13960
Issued Date
Feb 25, 1976
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
4621 Sunnyside Pl, Boulder, CO 80301

Professional information

Donald Frey Photo 1

Automated Diagnostic System Having Temporally Coordinated Wireless Sensors

US Patent:
5481481, Jan 2, 1996
Filed:
Nov 23, 1992
Appl. No.:
7/979825
Inventors:
Donald J. Frey - Boulder CO
Michael J. Holtz - Boulder CO
Assignee:
Architectural Engergy Corporation - Boulder CO
International Classification:
G01F 156
US Classification:
36455101
Abstract:
The diagnostic system makes use of a knowledge based controller and a plurality of data logger units, at least one of which is a wireless unit, to collect temporally coordinated data indicative of the real time operation of a system under test that comprises a plurality of spatially disjunct but operationally interdependent components. The diagnostic system controller automatically architects an instrumentation plan to collect the data and calculates performance factors from this collected data. A comparison of the calculated performance factors with optimum and typical failure mode performance factors identifies performance problems in the system under test.