Voltage compensation in an irrigation control device
First Claim
1. An irrigation valve control apparatus comprising:
- multiple terminals coupled with a multi-wire path;
a first charge storage circuitry electrically coupled with at least one of the multiple terminals, wherein the first charge storage circuitry is configured to be charged by a voltage on the multi-wire path;
a control circuitry configured to determine the voltage on the multi-wire path; and
a boost circuitry controlled by the control circuitry, wherein the control circuitry in response to determining that the voltage on the multi-wire path is below a threshold activates the boost circuitry to increase a voltage stored by the first charge storage circuitry, wherein the boost circuitry comprises;
a power inductor coupled with the first charge storage circuitry; and
switching circuitry cooperated with the power inductor;
wherein the control circuitry is configured to sequentially trigger the switching circuitry to induce a change in current over time through the power inductor producing a boost voltage applied to the first charge storage circuitry.
1 Assignment
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Accused Products
Abstract
Some embodiments provide irrigation valve control apparatuses comprising: multiple terminals coupled with a multi-wire path; a first charge storage circuitry electrically coupled with at least one of the multiple terminals, wherein the first charge storage circuitry is configured to be charged by a voltage on the multi-wire path; a control circuitry configured to determine the voltage on the multi-wire path; and a boost circuitry controlled by the control circuitry, wherein the control circuitry in response to determining that the voltage on the multi-wire path is below a threshold activates the boost circuitry to increase a voltage stored by the first charge storage circuitry.
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Citations
22 Claims
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1. An irrigation valve control apparatus comprising:
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multiple terminals coupled with a multi-wire path; a first charge storage circuitry electrically coupled with at least one of the multiple terminals, wherein the first charge storage circuitry is configured to be charged by a voltage on the multi-wire path; a control circuitry configured to determine the voltage on the multi-wire path; and a boost circuitry controlled by the control circuitry, wherein the control circuitry in response to determining that the voltage on the multi-wire path is below a threshold activates the boost circuitry to increase a voltage stored by the first charge storage circuitry, wherein the boost circuitry comprises; a power inductor coupled with the first charge storage circuitry; and switching circuitry cooperated with the power inductor; wherein the control circuitry is configured to sequentially trigger the switching circuitry to induce a change in current over time through the power inductor producing a boost voltage applied to the first charge storage circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of controlling irrigation valves, the method comprising:
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determining, at an irrigation valve control circuitry, whether a voltage on a multi-wire path is less than a first threshold, wherein the irrigation valve control circuitry is coupled with the multi-wire path obtains power from the multi-wire path to open and close an irrigation valve; activating a boost circuitry in response to determining that the voltage on the multi-wire path is less than the first threshold; generating a boost voltage, through the boost circuitry, that is greater than the voltage on the multi-wire path when the voltage on the multi-wire path is less than the first threshold; charging, through the boost voltage, a first charge storage circuitry to a first voltage that is greater than the voltage on the multi-wire path in response to the boost voltage; and discharging the first charge storage circuitry to drive a current through a solenoid controlling movement of a plunger to change positions to one of the open and closed position, wherein moving the plunger controls the irrigation valve such that water is allowed to pass through the valve when the plunger is in an open position and water is prevented from passing the valve when the plunger is in a closed position. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An irrigation control apparatus comprising:
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charge storage circuitry electrically coupled with a multi-wire path, wherein the charge storage circuitry is configured to be charged by a voltage on the multi-wire path; boost circuitry coupled to the charge storage circuitry and configured to increase a voltage stored by the charge storage circuitry when the voltage on the multi-wire path is below a threshold; a solenoid configured to cooperate with a plunger and to receive a plunger drive signal produced through a discharge of at least the charge storage circuitry; and plunger position detection circuitry configured to determine whether the plunger is in one of an open position and a closed position. - View Dependent Claims (21, 22)
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Specification