Electronic laundry program control apparatus

• US 4,084,237 A
• Filed: 03/28/1977
• Issued: 04/11/1978
• Est. Priority Date: 03/28/1977
• Status: Expired due to Term

• Current Assignee: Ecolab, Inc.
• Original Assignee: Ecolab, Inc.
• Inventors: Beachem, Ronald G., Willette, Wayne Ronald
• Primary Examiner(s): Botz, Eugene G.
• Application Number:
  US05/782,308
• Time in Patent Office: 379 Days
• Field of Search: 235/151.1, 235/150.1, 307/141, 307/141.4, 364/900
• US Class Current: 700/90
• CPC Class Codes: G05B 19/106 for selecting a programme, variable or parameter
• CPC Class Codes: G05B 2219/23427 Selection out of several programs, parameters
• CPC Class Codes: G05B 2219/25092 Customized control features, configuration

Abstract

Electronic laundry machine controller apparatus for automatically synthesizing, in response to single operator program selections, complete laundry cycles or programs from laundry machine control instructions stored, independent of operator selection or control, within an electronically read memory. A read only memory is preprogrammed to store laundry machine control instructions and program synthesis instructions for compiling a large number of different laundry programs, each having laundering steps or operations preconfigured to satisfy the peculiar laundering requirements of a large number of different commercial and institutional users. Program variation select means presettable by the manufacturer or upon installation of the controller enables preselection for execution from the large number of possible laundry cycles, only those laundry machine cycles which best satisfy the user'"'"'s specific laundering needs. A single user input stimulus to cycle select buttons initiates execution by the controller of a laundry cycle associated with that selection. Addressing and control circuits select and sequentially execute in timed sequence those instructions from memory which correspond to the selected laundry cycle. Each instruction when executed provides digital control signals to laundry machine function control apparatus for performing an identifiable step or operation of the selected program. Unused variations of laundry cycles remain as an integral part of the controller and can be rapidly activated in the event of a change in the user'"'"'s laundering requirements, without physical alteration or addition to the controller, by simple manual switching of entries into the variation selection switching means.

Claims

1. An electronic controller for laundry machines of the type having a plurality of electrically controlled subsystems each operable to perform a unique laundering function, comprising:

(a) read only memory means for storing a plurality of uniquely addressable logical instructions, and for providing logical memory output signals responsive to addressing of said instructions, wherein at least a plurality of said instructions each comprises a plurality of preset logical laundry function control commands arranged in a plurality of memory bits which are commonly activated upon addressing of said instruction to respectively each provide one of said logical memory output signals indicative of that said laundry function control command preset into that said memory bit;

(b) laundry cycle select means for producing in response to manual activation, a plurality of cycle select output signals, said laundry cycle select means having a plurality of switching members each identifiably associated with a different laundry cycle, each of said switching members being operable in response to a single manual activation stimulus to produce one of said cycle select output signals, which is uniquely identified with that activated switching member;

(c) laundry cycle execution means operatively connected with said laundry cycle select means and with said read only memory means, responsive to receipt of a single one of said cycle select output signals, for selectively addressing, in timed manner, a plurality of said memory instructions, to synthesize a complete laundry cycle identifably corresponding to that activated said cycle select switching member from which said cycle select output signal was received; and

(d) output circuit means operatively connecting said read only memory means with the plurality of subsystems of the laundry machine, for automatically activating the plurality of subsystems in response to said logical memory output signals, to execute a plurality of distinct laundering operations which collectively comprise the selected laundry cycle.

2. An electronic laundry machine controller as recited in claim 1, wherein said memory means is further characterized by those said instructions which are preset with said laundry function control commands each including at least one memory bit preset to contain logical timing information, and being operable upon activation to provide a logical memory timing output signal;

and wherein said laundry machine execution means includes timing control means operatively connected to receive said memory timing output signals for controlling in response thereto, the time duration of activation of said respectively addressed memory instructions.

3. An electronic laundry machine controller as recited in claim 1, wherein said memory means is functionally subdivided into a plurality of blocks of said instructions, wherein those said instructions within each said block are identifiably associated with a unique one of said laundry cycles, said instructions within at least one of said blocks, being preset with sufficient said laundry function control commands for enabling synthesis of a plurality of execution variations of that laundry cycle associated with said one instruction block;

and wherein said laundry cycle execution means includes;

(a) first addressing means responsive to said received cycle select output signal for selectively addressing only those instructions within that memory instruction block which is identifiably associated with the activated cycle select switching member; and

(b) manually presettable cycle variation select circuit means operatively connected with said one instruction block and responsive to receipt of that said cycle select output signal identifiably associated with said one instruction block for selectively addressing in timed sequential manner only those said instructions within said one instruction block that correspond to one manually preselected variation of said laundry cycle.

4. An electronic laundry machine controller as recited in claim 3, wherein each said instruction within said one instruction block includes at least one memory variation bit preset to contain a variation identifier code classifying that instruction with one of said plurality of laundry cycle execution variations, each said memory variation bit being operable when actively read upon addressing to provide a logical memory variation output signal representative of said variation identifier code preset into that memory variation bit;

and wherein said variation select circuit means comprises;

(a) manually settable variation switching means for providing, in response to manual selection and in response to receipt of that said cycle select output signal identifiably associated with said one instruction block, a plurality of presettable variation output signals, each presettable variation output signal being identifiably associated with a corresponding one of said laundry cycle execution variations, said variation switching means being operable to produce only one said presettable variation output signal at a time; and

(b) variation addressing circuit means operatively connected to receive said presettable variation output signal and said memory variation output signals from actively addressed instructions within said one instruction block, for comparing said presettable variation output signal and said memory variation output signals for actively reading in timed sequential manner only those instructions having a said preset variation identifier code corresponding with said presettable variation output signal.

5. An electronic laundry machine controller as recited in claim 1, wherein said memory means if further characterized by those said instructions which are preset with laundry function control commands being functionally grouped into commonly addressable blocks of said instructions, each of said instruction blocks being identifiably associated with a unique one of said selectable laundry cycles, wherein said instructions within each said block are ordered by successive addresses so as to produce when sequentially read that ordered progression of said logical memory output signals required to execute said respectively associated laundry cycle;

and wherein said laundry cycle execution means comprises;

(a) first addressing means responsive to said received cycle select output signal for electrically enabling that one of said memory instruction blocks identifiably associated with the activated cycle select switching member; and

(b) second addressing means responsive to said received cycle select output signal for sequentially addressing in timed controlled manner the successively addressable instructions within said enabled memory instruction block.

6. An electronic laundry machine controller as recited in claim 5, wherein said memory means is further characterized by said instructions within at least one of said instruction blocks being preset with sufficient laundry function control commands for enabling synthesis of a plurality of execution variations of that basic laundry cycle associated with said one instruction block;

and wherein said laundry cycle execution means further includes manually presettable variation select circuit means operatively connected with said second addressing means and responsive to receipt of said cycle select output signal identifiably associated with said one instruction block and to a manual input selection corresponding to one of said cycle execution variations, for controlling activation of said second addressing means so as to selectively address in timed sequential manner those ones of said instructions within said one instruction block that correspond to the manually preselected execution variation of said selected laundry cycle.

7. An electronic laundry machine controller for laundry machines of the type having a plurality of electrically controlled subsystems each operable to perform a unique laundering function, comprising:

(a) read-only memory means for storing a plurality of memory instructions, said memory means having a plurality of selectable memory storage blocks each associated with a different basic laundry cycle, each of said memory storage blocks comprising memory instruction storage means for storing a plurality of addressable memory instructions, whereby each instruction comprises a plurality of presettable bits of logical control information;

(b) manually activated laundry cycle select means having a plurality of select switching members each uniquely associated with different one of said memory storage blocks, for operatively enabling, in response to manual stimulation of said select switching members. Corresponding ones of said memory storage blocks, said laundry cycle select means including means for preventing concurrent operative enabling of more than one said memory storage block at a time;

(c) variation select switching means for providing a plurality of variation select output signals for each of said memory storage blocks, said variation select switching means being operable, responsive to manual preselection, to produce only one of said plurality of variation output signals at a time for the enabled one of said memory storage blocks;

(d) laundry cycle execution means operatively connected to said variation select switching means, to said laundry cycle select means and to said memory means for synthesizing a unique laundry cycle identifiably associated with a preselected variation of an operator selected laundry cycle, said laundry cycle execution means including circuit means responsive to said variation select output signal associated with said enabled memory storage block for selectively operatively addressing, in time controlled manner, said plurality of memory instructions within said enabled memory storage block, to provide a timed sequence of laundry function output commands from the read instructions; and

(e) output laundry function control means operatively connected to receive said plurality of logical function output commands for automatically activating a plurality of laundry machine subsystems in response thereto, to execute a corresponding plurality of distinct laundering operations which collectively comprise the preselected execution variation of the selected laundry cycle.

8. An electronic laundry machine controller as recited in claim 7, wherein at least one said bit of those instructions within said selectable memory blocks is preset to contain logical timing control information which produces a logical memory timing output signal upon active reading thereof;

and wherein said laundry cycle execution means includes timing control circuit means operatively connected to receive said memory timing output signals for controlling in response thereto the time duration of activation of said respectively addressed memory instructions.

9. An electronic laundry machine controller as recited in claim 8, wherein at least one said bit of those said instructions within said selectable memory blocks is preset to contain a variation identifier code classifying that instruction with one of said plurality of laundry cycle execution variations, each said memory variation bit being operable when read upon active addressing of the respective instruction, to provide a logical memory variation output signal representative of said variation identifier code preset into that memory variation bit;

and wherein said laundry cycle execution means includes variation addressing circuit means operatively connected to receive said memory variation output signals from actively addressed instructions and said presettable variation output signals from said variation select switching means for comparing said received memory and presettable variation output signals and for selectively overriding said timing control means responsive to the concurrent status of said comparison.

10. An electronic laundry machine controller as recited in claim 9, wherein said variation addressing circuit means comprises:

(a) comparator circuit means for comparing said received memory and presettable variation output signals, said comparator circuit means being operable to provide a first comparison output signal upon coincidence of said received compared signals and being operable to provide a second comparison output signal upon non-coincidence of said received compared signals; and

(b) override circuit means operatively connected with said timing control circuit means and responsive to receipt of said first and said second comparison signals to enable said timing control circuit means for normal operation thereof whenever said first comparison output signal is received, and to override normal operation of said timing control circuit means upon receipt of said second comparison output signal, said override circuit means being operable when overriding said timing control circuit means, to prevent active read out of said laundry function output commands for that addressed instruction concurrently being read and to advance active addressing of said memory instruction to the next successive addressable memory instruction within said enabled memory storage block.

11. An electronic laundry machine controller as recited in claim 10, wherein said override circuit means further includes circuit means responsive to receipt of said second comparison output signal to inhibit application of said laundry function output command signals to said output laundry function control means whenever a non-coincidence condition between said memory and said presettable variation output signals occurs.

12. An electronic laundry machine controller for automatically synthesizing timed sequences of electrical logical commands suitable for activating a plurality of subsystems of a laundry machine, to execute uniquely selectable laundry cycles, comprising:

(a) read only memory means for storing a plurality of preset logical instructions ordered by addressably identifiable groups of said instructions at consecutive memory location addresses so as to produce when read a large number of uniquely different laundry cycles, one each of said instruction groups being unquely associated with one each of said uniquely different laundry cycles, each instruction comprising a plurality of memory bits preset with logical laundry function control commands and being operable when read to provide logical memory output signals indicative of said preset laundry function control commands;

(b) manually activated laundry cycle select means for enabling manual selection and initiation of one of said available laundry cycles by means of a single manual input selection, comprising a plurality of selection switching members each identifiably associated with a different one of said laundry cycles and each operatively connected to respectively address when manually activated, that instruction within the respectively associated group of instructions, which corresponds to the first memory instruction of the selected laundry cycle, said laundry select means including means for enabling operatively input selection of only one said selection switching members at a time; and

(c) laundry cycle execution means responsive to said input selection by said laundry cycle select means to consecutively address and read, in timed sequential manner, those memory instructions within said selected groups of memory instructions, to synthesize a complete laundry cycle identifiably corresponding to that activated said laundry cycle select switching member, said sequential reading of said selected group intructions providing a timed sequence of said logical memory output signals indicative of said preset laundry function control commands.

13. An electronic laundry machine controller, for use in a laundry machine of the type having a plurality of subsystems responsive to received electrical commands for executing a plurality of laundering functions, comprising:

(a) read only memory means for storing a plurality of logical control instructions arranged in a plurality of instruction storage blocks, each of said blocks being functionally associated with a different basic laundry cycle, each said instruction comprising a plurality of read only memory bits preset with a plurality of laundry function control commands and with at least one variation identifier command said variation identifier command identifiably associating that instruction of which it is a part with one of a plurality of possible execution variations of the basic laundry cycle associated with that said storage block;

said memory having a plurality of signal output ports at which logical memory output signals are applied upon active reading of said memory bits of said instructions;

(b) first switching means for operatively selecting, in response to manual activation, one of said instruction storage blocks, said first switching means having select circuit means for providing unique laundry cycle selection output signals each identifiably associated with a different one of the selectable basic laundry cycles;

(c) presettable second switching means for preselecting one of said execution variations of each said basic laundry cycle, said second switching means having circuit means for providing in response to individual manual preselection stimuli a unique preset variation output signal for each said selectable instruction storage block;

(d) timing and control circuit means operatively connected to said second switching means and said read only memory means for controlling the time duration of sequential reading of said memory instructions, comprising;

(i) comparator circuit means operatively connected to receive from a memory instruction being read that said logical memory output signal corresponding to said variation identifier command preset in that instruction and to receive from said second switching means said preset variation output signal corresponding to the enabled instruction block of said memory, for comparing said memory output variation signal with said second switching means preset variation output signal and for producing comparison output signals in response thereto;

said comparator circuit means being operable to produce a first comparison output signal upon coincidence of said compared signals and being operable to produce a second comparison output signals upon non-coincidence of said compared signals; and

(ii) timing circuit means responsive to said comparison output signals for producing timing advance signals, said timing circuit means being operable in response to receipt of said first comparison output signal to produce a first timing advance signal and being operable in response to receipt of said second comparison output signal to produce a second timing advance signal; and

(e) addressing circuit means operatively connected with said read only memory means, said first switching means and said timing and control means for selectively actively reading said read only memory instructions, said addressing circuit means comprising;

(i) first circuit means responsive to receipt of said laundry cycle selection output signals for electrically enabling for reading those said instructions within an associated one of said instruction storage blocks; and

(ii) sequencing circuit means responsive to receipt of said timing advance signals for actively reading in timed sequential manner said enabled instructions, said sequencing circuit means being operable in response to receipt of said first timing advance signal to successively actively read in timed sequence the instructions within that enabled instruction block in a predetermined timed manner corresponding to the real time execution requirements of said laundry function control commands stored within said respectively read instructions, and being operable in response to receipt of said second timing advance signal to successively actively sequence through reading of the instructions within the enabled instruction block at a relatively rapid rate so as to prevent real time execution of said laundry function control commands stored within said respectively read instructions; and

(f) output circuit means operatively connected to receive said logical memory output signals from said signal output ports of said memory for automatically activating a plurality of subsystems of a laundry machine in response to said logical memory output signals, whereby the timed ordered reading of said enabled memory instructions provides to the laundry machine subsystems that combination of logical memory output signals required for execution in time sequential manner that plurality of distinct laundering operations which collectively comprise the preselected variation of the selected basic laundry cycle.

14. An electronic laundry machine controller as recited in claim 13, wherein said select circuit means of said first switching means comprises a plurality of manually operable selection switches each identifiably associated with a different one of the selectable basic laundry cycles, each of said selection switches being operable upon manual activation to provide one of said unique laundry cycle selection output signals.

15. An electronic laundry machine controller as recited in claim 14, wherein said first switching means further includes lockout circuit means operatively connected to said select circuit means and responsive to a first manual activation of any of said selection switches for inhibiting production of more than one of said unique laundry cycle selection output signals throughout the active execution of that laundry cycle associated with the first activated selection switch.

16. An electronic laundry machine controller as recited in claim 15, further including recycle circuit means operatively connected with said lockout circuit means for resetting said lockout circuit means to enable a successive manual reselection of any one of the basic laundry cycles through a successive manual activation of one of said selection switches.

17. An electronic laundry machine controller as recited in claim 16, wherein said recycle circuit means comprises automatic recycle circuit means operatively connected to monitor reading of said memory instructions, for resetting said lockout circuit means whenever the last instruction within an enabled instruction block has been actively read.

18. An electronic laundry machine controller as recited in claim 17, wherein said recycle circuit means further includes manual recycle circuit means for automatically resetting said lockout circuit means in response to a manual reset input stimulus, comprising:

(a) a manual reset switch operable to provide a reset output signal upon manual activation thereof; and

(b) circuit means operatively connected with said addressing circuit means and with said lockout circuit means and responsive to receipt of said reset output signal for resetting said lockout circuit means and for preventing further ordered reading of those instructions within the last enabled said memory instruction block.

19. An electronic laundry machine controller is recited in claim 13, further including emergency stop circuit means operatively connected with said addressing circuit means for temporarily inhibiting further successive reading of those instructions within the enabled instruction block, comprising:

(a) manually operated emergency stop circuit means responsive to a manual input stimulus to provide an emergency stop output signal;

(b) hold circuit means operatively connected to receive said emergency stop signal in response thereto for temporarily disabling said addressing circuit means to prevent successive reading of instructions within said enabled instruction block; and

(c) manually activated restart circuit means operatively connected with said hold circuit means and responsive to a manual restart input stimulus to override said hold circuit means, thus enabling said addressing circuit means to resume successive reading of said instructions within the enabled instruction block, beginning with the reading of that instruction which was last read at the time the manually operable emergency stop circuit means was activated.

20. An electronic laundry machine controller as recited in claim 13, wherein said presettable second switching means comprises a plurality of manual variation selection switches disposed within the laundry machine so as to be normally inaccessible to the operator making the basic laundry cycle selection through said first switching means, each of said manual variation selection switches being operatively associated with a different one of said basic laundry cycles and being operable to produce one of said unique variation output signals from a plurality of such variation output signals in response to manual selection of said variation selection switch, whereby that one of said variation output signals produced corresponds to that cycle execution variation manually preselected on that manual variation selection switch.

21. An electronic laundry machine controller as recited in claim 13, wherein at least one of said read only memory bits of said instructions is preset with a time control command, readable at said memory output ports, wherein said addressing circuit means is operatively connected to receive from a said memory instruction being read that said logical memory output signal corresponding to said time control command preset in that instruction, and is operatively responsive thereto when in receipt of said first timing output signal to actively read that instruction currently being read for a time duration corresponding to the time control command preset within that said instruction.

22. An electronic laundry machine controller as recited in claim 13, wherein at least one of said read only memory bits of said instructions is preset with a time control command, readable at said memory output ports;

and wherein said timing circuit means comprises;

(a) a plurality of pulse repetition generating circuits each operative to produce an output pulse train of predetermined pulse repetition rate; and

(b) selection and counting circuit means operatively connected to receive said comparison output signals and to receive that logical memory output signal corresponding to the preset time control command of an instruction currently being read, responsive to said received signals for counting selected ones of said output pulse train signals and for producing said timing advance signals in response to said pulse count.

23. An electronic laundry machine controller, for use in a laundry machine of the type having a plurality of subsystems responsive to received electrical commands for executing a plurality of laundering functions, comprising:

(a) read only memory means for storing a plurality of logical control instructions arranged in a plurality of instruction storage blocks, each of said blocks being functionally associated with a different basic laundry cycle, each said instruction comprising a plurality of read only memory bits preset with a plurality of laundry function control commands and with at least one variation identifier code, said variation identifier code identifiably associating that instruction of which it is a part which one of a plurality of possible execution variations of the basic laundry cycle associated with that instruction storage block;

said memory having a plurality of signal output ports at which logical memory output signals are applied upon active reading of said memory bits of said instructions;

(b) first switching means for operatively selecting, in response to manual activation, one of said instruction storage blocks, said first switching means having circuit means for providing unique laundry cycle selection output signals each identifiably associated with a different one of the selectable basic laundry cycles;

(c) presettable second switching means for preselecting one of said execution variations of each said basic laundry cycle, said second switching means having circuit means for providing in response to individual manual preselection stimuli a unique preset variation output signal for each said selectable instruction storage block;

(d) comparator circuit means operatively connected to receive from that said memory instruction currently being read, said logical memory output signal corresponding to said variation identifier code preset in that instruction and to receive from said second switching means said preset variation output signal corresponding to the enabled instruction block of said memory, for comparing said memory output variation code signal with said second switching means preset variation output signal and for producing comparator output signals in response thereto;

said comparator circuit means being operable to produce a first comparator output signal upon coincidence of said compared signals and being operable to produce a second comparator output signal upon non-coincidence of said compared signals;

(e) addressing circuit means operatively connected with said read only memory means, said first switching means and said comparator circuit means for selectively actively reading said read only memory instructions, said addressing circuit means comprising;

(i) block selection circuit means responsive to receipt of said laundry cycle selection output signals for selectively electrically enabling for reading those said instructions within that one of said instruction storage blocks associated with the currently received laundry cycle selection output signal; and

(ii) instruction addressing circuit means responsive to receipt of said comparator output signals for actively addressing in timed ordered manner those said instructions within the selected instruction storage block, whereby each said instruction is operatively read upon addressing by said instruction addressing circuit means;

said instruction addressing circuit means being operable in response to receipt of said first comparator output signal to successively actively read in timed ordered manner said instructions within that enabled instruction block in a predetermined timed manner corresponding to the real time execution requirements of said laundry function control commands read from respectively addressed instructions, and being operable in response to receipt of said second comparator output signal to address in relatively rapid successive manner those instructions within the enabled instruction block so as to prevent real time execution of said laundry function control commands stored within those respectively addressed instructions; and

(f) output circuit means operatively connected to receive said logical memory output signals from said signal output ports of said memory for automatically activating a plurality of subsystems of a laundry machine in response to said logical memory output signals, whereby the timed ordered reading of said selectively addressed memory instructions provides to the laundry machine subsystems that combination of logical memory output signals required for executing in time sequential manner that plurality of distinct laundering operations which collectively comprise the preselected variation of the selected basic laundry cycle.

24. An electronic laundry machine controller, as recited in claim 23, wherein at least one of said read only memory bits of said instructions is preset with a time control command, readable at said memory output ports;

and whereby said instruction addressing circuit means includes circuit means operatively connected to receive that logical memory output signal corresponding to the time control command preset within that instruction currently being addressed, and responsive to receipt of said first comparator signal to maintain active addressing of that instruction currently being read for a time duration corresponding with said received logical timing control command memory output signal, whenever said first comparator output signal is concurrently received.