Programmable time control apparatus

• US 4,319,319 A
• Filed: 01/28/1980
• Issued: 03/09/1982
• Est. Priority Date: 01/28/1980
• Status: Expired due to Term

• Current Assignee: Marathon Oil Company (Marathon Oil Corporation)
• Original Assignee: Marathon Oil Company (Marathon Oil Corporation)
• Inventors: Wygant, N. D.
• Primary Examiner(s): Smith, Jerry
• Application Number:
  US06/115,869
• Time in Patent Office: 771 Days
• Field of Search: 364/104, 340/309.1, 340/309.4, 340/309.5, 307/41, 307/141, 307/141.4, 307/293
• US Class Current: 700/14
• CPC Class Codes: G05B 19/045 using logic state machines, consisting only of a memory or a programmable logic device containing the logic for the controlled machine and in which the state of its outputs is dependent on the state of its inputs or part of its own output states, e.g. binary decision controllers, finite state controllers
• CPC Class Codes: G05B 2219/13015 Semi automatic, manual automatic
• CPC Class Codes: G05B 2219/13161 Easily exchangable rom, eprom cassette, earom
• CPC Class Codes: G05B 2219/14141 Restart

Abstract

The controlling of the operation of a plurality of different electrically actuated load devices at the desired time is solved in a simple and economical manner by the control apparatus of the present invention. The control apparatus disclosed includes a real-time clock with a selected total time span and with a selected time resolution. The apparatus has programmed control inclusive of interchangeable programmed memory modules and an alternate manual control of all control outputs for controlling the load devices in the desired time sequence.

Claims

1. An improved programmable test control apparatus comprising:

timing means for providing a reference time output during a test cycle,

a plurality of storage means pre-programmed with instruction data and time data and responsive to said reference time output for producing instruction data and time data outputs according to selected program,

a circuit means coupled to said storage means and said timing means including a comparator for comparing all time data in said storage means with said reference time output and producing a synchronous output when the reference times and storage times are equal,

decoding means coupled to an inserted one of said plurality of storage means and said circuit means responsive to said synchronous output for decoding the instruction data and time data outputs from said inserted storage means into a plurality of different control outputs at programmed times for sequentially actuating a plurality of different electrically actuated loads, said decoding means being further responsive to the presence of predetermined instruction data and time data for selectively stopping and resetting said timing means at the end of said test cycle,

means connected to said decoding means for displaying which of said control outputs become activated at said programmed times,

means connected between said decoding means and said displaying means for overriding said storing means by manually activating selected ones of said control outputs, and

each of said plurality of program storage means being capable of being preprogrammed and each being further capable of being selectively and manually insertable into said programmable time control apparatus at any time during the operation of said programmable time control apparatus by manually activating said overriding means during said selective insertion of said preprogrammable storage means.