US 10,772,180 B2Granted

State retention load control system

AssigneeLutron Technology Company LLC

InventorsAnkit Bhutani, Timothy Mann, David T. Saveri, III

Life of this patent

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Abstract

A load control system may include control devices for controlling power provided to an electrical load. The control devices may include an input device and a load control device. The load control system may include a hub device. The hub device may include a communication circuit and a control circuit. The communication circuit may be configured to receive a digital message from the control device. The control circuit may be configured to determine, based on content of the digital message, whether the control device has experienced a power removal event. The hub device may send, via the communication circuit, a power removal event indication to the control device of whether the control device has experienced the power removal event.

Claims25

Dependent claims

A load control system, comprising:

a first control device that is configured to be connected to a first alternating current (AC) circuit, wherein the first control device is configured to control an amount of power provided from the first AC circuit to a first electrical load;
a second control device that is configured to be connected to a second AC circuit, wherein the second control device is configured to control an amount of power provided from the second AC circuit to a second electrical load;
and
a hub device, comprising:
a communication circuit, wherein the communication circuit is configured to send and receive messages from the first control device;
and
a control circuit configured to:
determine, based on contents of a first message, that the first control device that is configured to be connected to the first AC circuit has experienced a power removal event due to a loss of power from the first AC circuit;
send, via the communication circuit, a query message to the second control device that is configured to be connected to the second AC circuit;
determine, based on contents of a second message received from the second control device in response to the query message, that the second control device has experienced a power removal event due to a loss of power from the second AC circuit;
determine, based on the loss of power at the first control device from the first AC circuit and the loss of power at the second control device from the second AC circuit, that the power removal event experienced by the first control device is a system power removal event;
and
in response to the determination that the first control device experienced the system power removal event, send, via the communication circuit, a first power removal event indication to the first control device that indicates that the power removal event experienced by the first control device is the system power removal event,
wherein the first control device is configured to, in response to receiving the first power removal event indication, adjust a power state of the first control device to a prior power state, wherein the prior power state of the first control device is the power state of the first control device prior to the first control device experiencing the system power removal event.

11 more elements

A method for adjusting a power state of a first control device, the method comprising:

determining that the first control device has experienced a power removal event due to a loss of power from a first alternating current (AC) circuit;
sending a query message to a second control device that is configured to be connected to a second AC circuit;
determining, based on contents of a message received from the second control device in response to the query message, that the second control device has experienced a power removal event due to a loss of power from the second AC circuit;
determining, based on the loss of power at the first control device from the first AC circuit and the loss of power at the second control device from the second AC circuit, that the power removal event experienced by the first control device is a system power removal event;
and
based on the determination that the first control device experienced the system power removal event, adjusting the power state of the first control device to a prior power state, wherein the prior power state of the first control device is the power state of the first control device prior to the first control device experiencing the system power removal event.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/641,933Filed 5 Jul 2017 · us provisional application
Priority: 5 Jul 2016
Published: US 2018/0014386 A111 Jan 2018
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04L 12/2816
Home automation networks: controlling appliance services of a home automation network by calling their functionalities
H05B 39/041
Controlling: the light-intensity of the source
H05B 47/11
In response to determined parameters: by determining the brightness or colour temperature of ambient light
H05B 47/14
In response to determined parameters: by determining electrical parameters of the light source

Family

Application62/358,435Us provisional application · filed 5 Jul 2016
US 2018/0014386 A1Pre-grant publication · published 11 Jan 2018
US 10,772,180 B2This patent

From the US filing history. Foreign family members aren’t listed.

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