Electrical load management with autogenically transmitted status data

• US 5,107,440 A
• Filed: 09/06/1990
• Issued: 04/21/1992
• Est. Priority Date: 08/09/1990
• Status: Expired due to Fees

• Current Assignee: Pacific Scientific Company (Parker-Hannifin Corporation)
• Original Assignee: Pacific Scientific Company (Parker-Hannifin Corporation)
• Inventors: Rosenquist, Craig H., McKee, Mervyn J., Callahan, Robert E.
• Primary Examiner(s): Teska, Kevin J.
• Application Number:
  US07/578,838
• Time in Patent Office: 593 Days
• Field of Search: 364/480, 364/481, 364/483, 364/492, 364/493, 364/514, 364/464.04, 340/870.02, 340/870.03, 340/637, 340/638, 324/103 R, 324/116
• US Class Current: 700/295
• CPC Class Codes: H02J 13/00019 using optical means

Abstract

To allow a tester to test whether a switching arrangement near a customer'"'"'s premises has connected and reconnected loads according to load management command signals from a central utility transmitter, a switch autogenically transmits, over and over, status signals indicating the status of the contacts in the switching arrangement.

Claims

1. For controlling a plurality of electrical loads, an electrical load management system comprising:

utility control means for transmitting load management signals to control the loads;

load management switch means responsive to the control means and associated with each of the loads for responding to the load management signals from said utility control means and for regulation operation of the loads;

portable test means for receiving data and visually displaying the data; and

said load management switch means having storage means for storing the data concerning the load management signals and having transmitting means coupled to said storage means for autogenically transmitting the stored data so that when said portable test means is within range of the transmitting means, said portable test means can receive data transmitted by said transmitting means.

2. A system as in claim 1, wherein said transmitting means transmits the stored data repeatedly.

3. A system as in claim 1, wherein said transmitting means transmits the stored data repeatedly on a continuing endless basis.

4. A system as in claim 1, wherein said transmitting means transmits the stored data repeatedly in bursts with delays between repetitions.

5. A system as in claim 1, wherein said transmitting means transmits the stored data repeatedly with substantially no delay between the repeated data.

6. For controlling a plurality of electrical loads in response to load management signals from a control center, an electrical load management switch comprising:

load management control means associated with each of the loads for responding to the load management signals from said control center and for regulating operation of the loads;

storage means for storing the data concerning the load management signals; and

transmitting means for autogenically and continuously transmitting the stored data so that the transmitted data can be received by a portable tester.

7. A switch as in claim 6, wherein said transmitting means transmits the stored data repeatedly.

8. A switch as in claim 6, wherein said transmitting means transmits the stored data continuously and repeatedly in bursts with delays between repetitions.

9. A switch as in claim 6, wherein said transmitting means transmits the stored data continuously and repeatedly with substantially no delay between the repeated data.