Water flow control system

• US 9,049,821 B1
• Filed: 09/29/2014
• Issued: 06/09/2015
• Est. Priority Date: 01/10/2014
• Status: Active Grant

• Current Assignee: Rachio, Inc
• Original Assignee: John Nashed Hanna
• Inventors: Hanna, John Nashed
• Primary Examiner(s): PATEL, RAMESH B
• Application Number:
  US14/500,734
• Time in Patent Office: 253 Days
• Field of Search: 700282-284
• US Class Current: 1/1
• CPC Class Codes: A01G 25/16 Control of watering
• CPC Class Codes: A01G 25/165 Cyclic operations, timing systems, timing valves, impulse operations
• CPC Class Codes: Y02A 40/22 Improving land use; Improving water use or availability; Controlling erosion

Abstract

A watering control system includes a bridge device and a flow control device. The bridge device communicates with a web server to maintain a watering schedule. The bridge device also communicates wirelessly with the flow control device. The flow control device includes an annular inlet for connecting to an external faucet or another source of fluid, an annular outlet for connecting to a hose or another water conveying channel, and a conduit positioned in communication with the inlet and the outlet. The flow control device further includes a wireless receiver and a valve. The receiver is configured to receive a wirelessly transmitted valve activation signal from the bridge device and the valve is configured to open in accordance with the activation signal to enable the fluid to flow through the conduit.

Claims

1. An irrigation flow control device, comprising:

an inlet configured to connect to a water faucet;

an outlet configured to connect to a water hose;

a conduit configured to convey water from the inlet to the outlet;

a wireless receiver configured to receive a wirelessly transmitted valve activation signal;

a valve configured to open and close the conduit in accordance with the wirelessly transmitted valve activation signal; and

a fluid meter configured to indicate a water parameter, wherein the water parameter is selected from;

a flow rate parameter indicative of a flow rate of water flowing through the conduit; and

a volume parameter indicative of a volume of water flowing through the conduit during an active interval of the valve.

2. The device of claim 1, wherein the valve comprises a solenoid valve including a solenoid configured to actuate a plunger coupled to a diaphragm within the conduit.

3. The device of claim 2, wherein the solenoid comprises a bi-stable solenoid configured to toggle the valve in response to a signal pulse, wherein the wirelessly transmitted valve activation signal comprises an activation pulse.

4. The device of claim 3, wherein a pulse width of the activation pulse does not exceed approximately 10 ms and an activation current does not exceed approximately 100 mA.

5. The device of claim 1, further comprising:

a shut off module configured to close the valve in accordance with the water parameter.

6. The device of claim 5, wherein the water parameter includes the volume parameter and wherein the shut off module is configured to close the valve in response to detecting the volume reaching a specific threshold.

7. The device of claim 1, wherein the wirelessly transmitted valve activation signal is transmitted via a signal having a carrier frequency, wherein the carrier frequency is:

less than 1 GHz; and

within an industrial, scientific and medical (ISM) frequency band.

8. The device of claim 1, further comprising:

a power source configured to provide power to a component selected from;

the wireless receiver; and

the valve; and

a power switch configured to control a connection between the power source and the component.

9. The device of claim 8, further comprising:

a light emitting diode configured to indicate a state of at least one of;

the valve; and

the power switch.

10. The device of claim 8, wherein the power source comprises a photovoltaic cell.

11. The device of claim 1, wherein the inlet comprises an internally threaded cylinder, and wherein a diameter of the cylinder is approximately 1.1313 (1 and 1/16) inches.

12. The device of claim 1, further comprising:

a schedule module configured to perform operations comprising;

receiving a schedule message indicative of a time for a scheduled activation of the valve;

maintaining a schedule indicative of the scheduled activation; and

activating the valve in accordance with scheduled activations indicated in the schedule.

13. The device of claim 12, wherein the operations include:

obtaining current time information indicative of at least one of;

a current time of day;

a current day of week; and

a current date including a current month and a current day of month; and

detecting a match between the current time information and the scheduled activation.

14. The device of claim 12, wherein the schedule module comprises:

a processor; and

a computer readable memory device, accessible to the processor, including program instructions executable by the processor to the operations.

15. A water control method, comprising:

detecting, by a wireless receiver of a flow control device configured to connect a conduit between a water faucet and a water hose, wirelessly transmitted valve activation signal and wirelesslv transmitted valve deactivation signals from a bridge device configured to;

communicate with a wireless access point to establish a web connection;

obtain irrigation schedule information from a web server; and

wirelessly communicate the valve activation signals and the valve deactivation signals to the wireless receiver in accordance with the irrigation schedule information; and

opening and closing a valve of the flow control device, in accordance with the valve activation signals and the valve deactivation signals, to enable or prohibit water flow of the water the through the conduit.

16. The method of claim 15, further comprising:

detecting, by the wireless receiver, wirelessly transmitted activation messages and wirelessly transmitted deactivation messages from a user device; and

valve opening and closing the valve in accordance with the activation messages and deactivation messages;

wherein the user device is selected from;

a mobile phone; and

a tablet device.

17. A watering system, comprising:

a bridge device configured to;

access an irrigation schedule; and

wirelessly transmit an activation signal in accordance with the irrigation schedule; and

a flow control device configured to connect an external water faucet to a water hose via a conduit, the flow control device including;

a wireless receiver configured to detect the activation signal; and

a valve, within the conduit, configured to open, in response to the activation signal, to permit the flow of water from the water faucet.

18. The watering system of claim 17, wherein the bridge device is configured to:

communicate with a web server to maintain the irrigation schedule; and

wirelessly transmit the activation signal in accordance with a local area wireless protocol.

19. The watering system of claim 18, wherein maintaining the irrigation schedule includes:

modifying the irrigation schedule responsive to receiving a meteorological message indicative of at least one of;

a current meteorological condition; and

a forecasted meteorological condition.