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