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Title: Interrogator system for identifying electrical circuits

Abstract

A system for interrogating electrical leads to correctly ascertain the identity of equipment attached to remote ends of the leads. The system includes a source of a carrier signal generated in a controller/receiver to be sent over the leads and an identifier unit at the equipment. The identifier is activated by command of the carrier and uses a portion of the carrier to produce a supply voltage. Each identifier is uniquely programmed for a specific piece of equipment, and causes the impedance of the circuit to be modified whereby the carrier signal is modulated according to that program. The modulation can be amplitude, frequency or phase modulation. A demodulator in the controller/receiver analyzes the modulated carrier signal, and if a verified signal is recognized displays and/or records the information. This information can be utilized in a computer system to prepare a wiring diagram of the electrical equipment attached to specific leads. Specific circuit values are given for amplitude modulation, and the system is particularly described for use with thermocouples.

Inventors:
 [1];  [2]
  1. (10601 Rivermist La., Knoxville, TN 37922)
  2. (Rte. 12, Box 538, Maryville, TN 37801)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Sponsoring Org.:
USDOE
OSTI Identifier:
866569
Patent Number(s):
4737657
Assignee:
Jatko, William B. (10601 Rivermist La., Knoxville, TN 37922);McNeilly, David R. (Rte. 12, Box 538, Maryville, TN 37801) ORO
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
interrogator; identifying; electrical; circuits; interrogating; leads; correctly; ascertain; identity; equipment; attached; remote; source; carrier; signal; generated; controller; receiver; identifier; unit; activated; command; portion; produce; supply; voltage; uniquely; programmed; specific; piece; causes; impedance; circuit; modified; whereby; modulated; according; modulation; amplitude; frequency; phase; demodulator; analyzes; verified; recognized; displays; records; information; utilized; computer; prepare; wiring; diagram; values; particularly; described; thermocouples; supply voltage; electrical circuits; carrier signal; electrical leads; electrical circuit; signal generated; electrical equipment; amplitude modulation; phase modulation; modulated carrier; electrical lead; /307/340/702/

Citation Formats

Jatko, William B., and McNeilly, David R. Interrogator system for identifying electrical circuits. United States: N. p., 1988. Web.
Jatko, William B., & McNeilly, David R. Interrogator system for identifying electrical circuits. United States.
Jatko, William B., and McNeilly, David R. Fri . "Interrogator system for identifying electrical circuits". United States. https://www.osti.gov/servlets/purl/866569.
@article{osti_866569,
title = {Interrogator system for identifying electrical circuits},
author = {Jatko, William B. and McNeilly, David R.},
abstractNote = {A system for interrogating electrical leads to correctly ascertain the identity of equipment attached to remote ends of the leads. The system includes a source of a carrier signal generated in a controller/receiver to be sent over the leads and an identifier unit at the equipment. The identifier is activated by command of the carrier and uses a portion of the carrier to produce a supply voltage. Each identifier is uniquely programmed for a specific piece of equipment, and causes the impedance of the circuit to be modified whereby the carrier signal is modulated according to that program. The modulation can be amplitude, frequency or phase modulation. A demodulator in the controller/receiver analyzes the modulated carrier signal, and if a verified signal is recognized displays and/or records the information. This information can be utilized in a computer system to prepare a wiring diagram of the electrical equipment attached to specific leads. Specific circuit values are given for amplitude modulation, and the system is particularly described for use with thermocouples.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

Patent:

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