Communications: electrical – Continuously variable indicating – With meter reading
Patent
1992-06-23
1993-10-12
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34087003, 340310A, 340310R, 34082554, 346 14MR, G08B 1902, H04Q 900
Patent
active
052529673
ABSTRACT:
A two wire/three wire utility data communications system for remotely reading utility meter registers. In the two wire version, a hand-held reading unit is inductively coupled over two wires via a port located remotely from a meter register. Alternatively, a meter interface unit (MIU) may be connected directly to the register via three wires. Each register includes one or more wheel position encoders. An AC interrogation signal is applied by the reading unit to encoder circuitry at the meter which powers the circuitry and causes the position of each encoder wheel to be read. In the two wire mode, register display information (e.g. the current meter reading) is transmitted back to the reading unit by varying the load (impedance) presented by the register side of the circuit. This causes a corresponding variation of the amount of current drawn from the reading unit. The current-modulated signal is decoded by the reading unit and converted into a register reading. The system can also operate in a three wire mode and read older fourteen wire encoded registers. Other features include remote programmability of register characteristics, the ability to interrogate multiple registers which share a common data bus, verification of encoder wheel positions before accepting a reading, real-time flow rate/leak detection, pulse output, and the capability of reading compound meters (i.e. meters having two registers to separately measure high/low flow rates).
REFERENCES:
patent: 3754250 (1973-08-01), Bruner
patent: 3806904 (1974-04-01), Weingerger et al.
patent: 3914757 (1975-10-01), Finlay, Jr. et al.
patent: 4008458 (1977-02-01), Wensley
patent: 4035772 (1977-07-01), Abe et al.
patent: 4085287 (1978-04-01), Kullmann et al.
patent: 4132981 (1979-01-01), White
patent: 4196417 (1980-04-01), Fasching et al.
patent: 4207557 (1980-06-01), Gilkeson et al.
patent: 4208653 (1980-06-01), Abe
patent: 4352104 (1982-09-01), Mizuta et al.
patent: 4361838 (1982-11-01), Mizuta
patent: 4463354 (1984-07-01), Sears
patent: 4504831 (1985-03-01), Jahr et al.
patent: 4532510 (1985-07-01), Bertrand et al.
patent: 4569045 (1986-02-01), Schieble et al.
patent: 4573041 (1986-02-01), Kitagawa et al.
patent: 4578540 (1986-03-01), Borg et al.
patent: 4646084 (1987-02-01), Burrowes et al.
patent: 4652877 (1987-03-01), Gray
patent: 4652885 (1987-03-01), Weikel
patent: 4707852 (1987-11-01), Jahr et al.
patent: 4758836 (1988-07-01), Scuilli
patent: 4782341 (1988-11-01), Gray
patent: 4803632 (1989-02-01), Frew et al.
patent: 4852152 (1989-07-01), Honick
Article by Pravdic et al. Entitled "Microcomputer System for Pulse Data Acquisition, Recording, Local Processing and Remote Data Transmission" IECON '86, Sep. 29-Oct. 3, 1986, vol. 1, pp. 327-332.
Brennan Jr. William J.
Hamilton David R.
Wynn, Jr. Warren C.
Gaudier Dale V.
Giust John
Schlumberger Industries Inc.
Yusko Donald J.
LandOfFree
Reader/programmer for two and three wire utility data communicat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reader/programmer for two and three wire utility data communicat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reader/programmer for two and three wire utility data communicat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1907679