Distribution control system

• US 4,185,272 A
• Filed: 04/13/1979
• Issued: 01/22/1980
• Est. Priority Date: 03/17/1977
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Feiker, George E.
• Primary Examiner(s): Pitts, Harold I.
• Application Number:
  US06/029,614
• Time in Patent Office: 284 Days
• Field of Search: 340/168 R, 340/146.1 BA, 340/310 R, 340/310 A, 340/147 R
• US Class Current: 340/3.54
• CPC Class Codes: G05B 19/0421 Multiprocessor system
• CPC Class Codes: G05B 19/0423 Input/output
• CPC Class Codes: G05B 2219/21071 Configuration, each module has a settable address, code wheel, encoder
• CPC Class Codes: G05B 2219/21126 Signal processing, filter input
• CPC Class Codes: G05B 2219/2231 Master slave
• CPC Class Codes: G05B 2219/2233 Each slave can control several other slaves
• CPC Class Codes: G05B 2219/23113 Reread, retransmit several times data for valid data, redundant command
• CPC Class Codes: G05B 2219/25161 Only receiving station, read several times message, select correct one or reject
• CPC Class Codes: G05B 2219/25162 Contention, if several transmitters avoid collision, by separate transmittor code
• CPC Class Codes: G05B 2219/25169 Half duplex, repeater
• CPC Class Codes: G05B 2219/25177 Using fm frequency modulation, fsk, biphase code
• CPC Class Codes: G05B 2219/25188 Superposition high frequency data signal on power lines, current carrier
• CPC Class Codes: G05B 2219/25218 Broadcast mode, originator, destinator address, command, check data
• CPC Class Codes: G05B 2219/2642 Domotique, domestic, home control, automation, smart house
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H04Q 9/14 Calling by using pulses
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 20/20 End-user application control systems
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission

Abstract

A redundant digital address and function code is generated at a central location and transmitted through a signal circuit or an A.C. power distribution circuit to a plurality of receiver locations. At each addressed receiver location, the encoded function is performed to control selected loads in a predetermined manner. A signal may be transmitted back to the central location for controlling a pre-programmed combination of loads in response thereto.

Claims

1. A method for performing a selected electrical function at a selected one of a plurality of remote locations from a central location comprising:

redundantly generating a predetermined number of digital words at said central location;

transmitting the generated words to each of said remote locations;

decoding each of said transmitted words at each of said remote locations;

detecting a predetermined address in each of said digital words at said selected remote location;

performing said selected function at said selected remote location when identical digital words having said predetermined address have appeared at said selected remote location a predetermined number of times out of the number of times said digital words have been redundantly generated at said central location; and

transmitting from said selected remote location to said central location a control signal intended to control a pre-programmed combination of loads responsive to said control signal.

2. The method of claim 1 wherein the step of performing said selected function at said selected remote location includes the step of controllably supplying input signals to receiver-decoder means at said selected remote location when identical digital words having said predetermined address have appeared at said selected remote location said predetermined number of times out of the number of times said digital words have been redundantly generated at said central location.