Programmable flow control valve unit with clock, program, automatic, manual, and repeat modes

• US 4,797,820 A
• Filed: 07/28/1986
• Issued: 01/10/1989
• Est. Priority Date: 07/28/1986
• Status: Expired due to Fees

• Current Assignee: Anson Industries Incorporated
• Original Assignee: Anson Industries Incorporated
• Inventors: Williamsen, Mark S., Anesi, Dennis W., Wilson, Dennis A.
• Primary Examiner(s): Smith, Jerry
• Assistant Examiner(s): MacDonald, Allen
• Application Number:
  US06/890,170
• Time in Patent Office: 897 Days
• Field of Search: 364/509, 364/510, 364/140, 364/420, 364/400, 364/143, 137/624.11-624.22, 239/69, 239/70
• US Class Current: 700/284
• CPC Class Codes: A01G 25/165 Cyclic operations, timing systems, timing valves, impulse operations
• CPC Class Codes: G05D 7/0635 by action on throttling means G05D7/0688, G05D7/0694 take precedence
• CPC Class Codes: Y10T 137/86405 Repeating cycle

Abstract

A programmable flow control valve unit has a valve assembly with a solid state control cooperating with a programmable timing device to provide the operating mode for the purpose of operating the valve unit for a predetermined time period or periods in order to achieve the functioning of the valve assembly to thereby move a fluid such as a gas, a liquid, or a slurry to a particular place in a desired time pattern. The time periods may be set individually or by a repeat mode.

Claims

1. A programmable flow control valve unit for directing the flow of a fluid, said valve unit including a valve assembly operably connected to an electronic assembly, wherein:

a. said electronic assembly includes a sequence type control with a programmable memory means operably connected to a means for accepting cycle selections by a user of said programmable flow control valve unit;

b. said sequence type control includes a selected program for activating said electronic assembly and thereby operate said valve assembly;

c. said selected program includes at least one discrete program advancing operation;

d. said discrete program advancing operation is dependent, at least in part, upon said cycle selections;

e. said electronic assembly further includes a copying means for duplicating said discrete program advancing operation to permit said selected program to have easily duplicated parts;

f. said electronic assembly further includes a display means operably interconnected with said electronic assembly for providing an indication of instructions given to said programmable flow control valve unit;

g. said electronic assembly further includes a clock means operably interconnected with said electronic assembly for timing said operations; and

h. said electronic assembly further includes a control logic means operable during a programmable mode operably connected to said electronic assembly in order to enable the electronic assembly to function;

i. said sequence-type control is a push button assembly operably connected to said discrete program advancing operation for setting a set of five modes including a clock mode, a program mode, an automatic mode, a manual mode, and a repeat mode;

j. an enter means is operably connected for loading each of said five modes within said discrete program advancing operation;

k. said clock mode provides a day readout and a time of day readout within said display means; and

l. said display means provides a program readout for said discrete program advancing operation and a clock mode readout for said clock mode at the same time.

2. The programmable flow control valve unit of claim 1, wherein:

a. said electronic assembly includes a printed circuit board connected therein;

b. said printed circuit board has battery contacts, a microcomputer, a timing device, and a means for sensing interconnected with said printed circuit board;

c. said battery contacts are on an underside of said printed circuit board;

d. said timing device is mounted on said underside;

e. said sensing means for sensing a position of a main shaft of said programmable flow control valve unit;

f. said battery contacts receive power from a battery means for providing power to said device for said microcomputer, said timing device, and said sensing means;

g. said microcomputer includes a programmable memory means for said valve unit;

h. said push botton assembly is operably connected to said microcomputer for setting said set of five modes including said clock mode, said program mode, said automatic mode, said manual mode, and said repeat mode; and

i. an enter means is operably connected for loading each of said five modes within said microcomputer.

3. The programmable flow control valve unit of claim 2, wherein:

a. said electronic assembly includes a push button assembly electrically connected to said microcomputer;

b. said push button assembly is electrically connected to said display means, an electric motor, a switching means and a power source;

c. said microcomputer carries out all logic and timing functions of said programmable flow control valve unit;

d. said electronic assembly includes a valve control circuit for said microcomputer for applying current to said motor; and

e. said electronic assembly includes a low battery sensing circuit for signaling said microcomputer to keep said valve unit closed when said battery means used to supply power to said programmable flow control valve unit have reached the end of their operating life.

4. The programmable flow control valve unit of claim 3, wherein:

a. said switch means includes a first switch and a second switch operated by a switch cam;

b. said push button assembly forms a switch matrix connecting keyboard drive lines to keyboard sense lines thereby allowing said microcomputer to sense closure of any member in said push button switch assembly;

c. said display means in a liquid crystal display driven directly by said microcmputer; and

d. said timing device includes a quartz crystal.

5. The programmable flow control valve unit of claim 4, wherein:

a. said microcomputer has five operating modes;

b. said operating modes includes a clock mode, a program mode, an automatic mode, a manual mode, and a repeat mode; and

c. said operating modes are operably connected to said push button assembly.

6. The programmable flow control valve unit of claim 5, wherein:

a. said clock mode allows entry of the day of the week, time status, and the current time;

b. said program mode provides a means to select a day of the week to program, a start time, and a duration time;

c. said start time provides a time for said valve assembly to be opened; and

d. said duration time provides a length of time for said valve assembly to be opened and closed at the end thereof.

7. The programmable flow control valve unit of claim 6, wherein:

a. said automatic mode provides a means for carrying out a fluid flow sequence set by said program mode; and

b. said repeat mode provides for duplicating of a fluid flow sequence for a day.

8. The programmable flow control valve unit of claim 7, wherein said manual mode provides for a one-shot timed fluid flow cycle.

9. The programmable flow control valve unit of claim 8, wherein said repeat mode accepts six different parameters from the user and then begins a fluid flow cycle which repeats daily until interrupted by the user or low battery.

10. The programmable flow control valve unit of claim 4 wherein said switch cam has the shape of a flattened mushroom.

11. The programmable flow control valve unit of claim 1 wherein an electronic circuit forms part of said electronic assembly for said programmable flow control valve unit to provide an operation function thereof, wherein:

a. said electronic circuit includes a single chip microcomputer operably connected therein for carrying out all logic and timing functions;

b. said electronic circuit includes a pushbutton assembly operably connected to said single chip microcomputer for allowing user input of data and commands;

c. said electronic circuit includes a liquid crystal display operably connected to said electronic assembly to provide a readout of valve status and program data;

d. said electronic circuit is operably connected to a timekeeping crystal for providing necessary timing functions for said device;

e. said electronic circuit includes a valve control circuit operably connected to said single chip microcomputer for applying current to motor to operate said valve assembly;

f. said electronic circit includes a battery means for supplying all power needed by said programmable fluid flow control valve; and

g. said single chip microcomputer, said pushbutton assembly, said liquid crystal display, said timekeeping crystal, said valve control circuit, and said battery means are electrically and cooperatively interconnected.

12. The programmable flow control valve unit of claim 11 wherein said electronic circuit further includes a low battery sensing circuit for signaling said microcomputer when said batteries have ended their operating life to thereby prevent locking said programmable flow control valve in an open position.

13. The programmable flow control valve unit of claim 12 wherein:

a. said motor rotates a gear assembly;

b. said gear assembly operates a valve mechanism; and

c. an electrical connection from said gear assembly to said single chip microcomputer signals a desired position for said programmable fluid flow control valve in order to provide instruction to said single chip microcomputer and thereby permit said motor to cease operation.

14. The programmable flow control valve unit of claim 13 wherein:

a. said pushbutton assembly is electrically connected to said single chip microcomputer, said liquid crystal display, said motor, a set of leaf switches, and said battery means; and

b. said pushbutton assembly includes a plurality of switches for activating said programmable flow control valve unit.

15. The programmable flow control valve unit of claim 14 wherein:

a. said motor operates a switch cam;

b. said switch cam operates a pair of said leaf switches; and

c. said leaf switches feed information to said single chip microcomputer for signaling a valve position to said single chip microcomputer.

16. The programmable flow control valve unit of claim 15 wherein:

a. a valve position sensing switch feeds a valve position to said computer;

b. said valve position sensing switch adds or removes a least one transistor from operation as required;

c. said signal is amplified and inverted by said first transistor thereby causing current to flow through said switch and a second base resistor of a second transistor resulting in application of current to said motor;

d. said motor functions and turns a main shaft for a sufficient period of time to cause said first switch to have a change of state; and

e. said change of state causes said second transistor to receive a high logic level, to thereby cease application of current to said motor.

17. The programmable flow control valve unit of claim 16 wherein:

a. said valve actuator mechanism is closed by said microcomputer applying a low logic level to said base resistor of said second transistor through said first switch; and

b. said first switch changes state to cause said second transistor to receive a high logic level from said first transistor thereby causing said motor to cease operation.

18. The programmable flow control valve unit of claim 17 wherein:

a. a keyboard sense line connects each pushbutton switch in said push button switch assembly to said microcomputer and allows said microcomputer to sense closure of said pushbutton switch in said push button switch assembly;

b. a switch cam operates said first switch and a second switch to signal said microcomputer when a main shaft of said programmable flow control valve unit has reached a desired position;

c. said liquid crystal display is driven directly by said microcomputer to display information to a user of said programmable flow control valve unit;

d. a plurality of capacitors provide for operation of said microcomputer; and

e. a diode means provides for a constant current supply when said motor loads said batteries.

19. The programmable flow control valve unit of claim 1 wherein:

a. said electronic assembly includes a low battery circuit and a quartz timing crystal for operating said programmable memory means;

b. said clock mode allows entry of the current day of the week, current AM or PM status, and the current time;

c. said program mode sets a program including which day of the week, AM or PM start time, and duration for said programmable flow control valve to operate;

d. said repeat mode permits a repeat of said program in a one-step fashion;

e. said automatic mode causes said programmable fluid flow control valve unit to carry out a fluid flow sequence entered in said program mode until interrupted by said user or said low battery circuit; and

f. said manual mode permits said programmable fluid flow control valve unit to be operated manually.

20. The programmable flow control valve unit of claim 19 wherein:

a. said programmable memory means is a single chip microcomputer;

b. said push button assembly is operably connected to control said five modes;

c. an enter means is operably connected for loading each of said five modes within said single chip microcomputer;

d. said repeat mode permits more than one repeat of said program;

e. said low battery circuit includes a means for rendering said low battery circuit stable with respect to variations in ambient temperature;

f. said push button assembly is operably connected to said single chip microcomputer;

g. said single chip microcomputer is connected to a readout means; and

h. said readout means indicates both time of day and a program parameter at the same time.