Systems and methods of lock and powered load enumeration and secure activation

Patent metadata

Field	Value
Publication number	US-2020175792-A1
Application number	US-201816204239-A
Country	US
Kind code	A1
Filing date	Nov 29, 2018
Priority date	Nov 29, 2018
Publication date	Jun 4, 2020
Grant date	—

Abstract

A load control system includes a power supply, a load controller coupled to a load, and a supply controller. The load controller receives a first power having a first current level from the power supply, and uses the first power to cause a plurality of resistors to output a plurality of pre-defined codes. The supply controller receives the plurality of pre-defined codes, evaluates an output condition based on the plurality of pre-defined codes, and causes the power supply to output a second power having a second current level greater than the first level responsive to the plurality of pre-defined codes satisfying the output condition.

First claim

What is claimed is:

1 . A load control system, comprising:
a power supply; a load controller coupled to a load, the load controller receives a first power having a first current level from the power supply, and uses the first power to cause a plurality of resistors to output a plurality of pre-defined codes; and a supply controller that receives the plurality of pre-defined codes, evaluates an output condition based on the plurality of pre-defined codes, and causes the power supply to output a second power having a second current level greater than the first level responsive to the plurality of pre-defined codes satisfying the output condition.

2 . The load control system of claim 1 , comprising:
the supply controller activates a first switch to couple the power supply to a circuit path coupled to the load controller and the load.

3 . The load control system of claim 1 , comprising:
a second switch that the load controller activates to couple the load to the power supply.

4 . The load control system of claim 1 , comprising:
the supply controller includes a memory maintaining a plurality of supply codes and evaluates the output condition based on matching the plurality of pre-defined codes to the plurality of supply codes.

5 . The load control system of claim 1 , comprising:
at least one sensor detects a current and a voltage of a signal representative of each pre-defined code, and the supply controller extracts the pre-defined code based on the current and voltage.

6 . The load control system of claim 1 , comprising:
the supply controller at least one of filters and decrypts a signal received from the plurality of resistors representative of a corresponding pre-defined code.

7 . The load control system of claim 1 , comprising:
the load controller receives the first power from the power supply via a first circuit path and provides the plurality of pre-defined codes to the supply controller via a second circuit path.

8 . The load control system of claim 1 , comprising:
the supply controller outputs an alert responsive to the plurality of pre-defined codes not satisfying the output condition.

9 . The load control system of claim 1 , comprising:
the load controller is a first load controller, the load is a first load, and the plurality of pre-defined codes are a plurality of first pre-defined codes; and at least one second load controller coupled to a respective at least one second load provides a plurality of second pre-defined codes to the supply controller.

10 . A method, comprising:
setting, by at least one of a supply controller and a power supply, a current limit of the power supply to a first value; connecting, by the supply controller, the power supply to a load controller; generating, by the load controller, a plurality of pre-defined codes using a first power having a first current level less than or equal to the first value of the current limit; receiving, at the supply controller, the plurality of pre-defined codes; evaluating, by the supply controller, an output condition based on the plurality of pre-defined codes; and connecting, by the supply controller, the load to the power supply responsive to the plurality of pre-defined codes satisfying the output condition.

11 . The method of claim 10 , comprising:
increasing the current limit to a second value greater than the first value responsive to the plurality of pre-defined codes satisfying the output condition.

12 . The method of claim 10 , comprising:
activating, by the supply controller, a first switch to couple the power supply to a circuit path coupled to the load controller and the load.

13 . The method of claim 10 , comprising:
maintaining, in memory of the supply controller, a plurality of supply codes; and
evaluating, by the supply controller, the output condition based on matching the plurality of pre-defined codes to the plurality of supply codes.

14 . The method of claim 10 , comprising:
detecting, by at least one sensor, a current and a voltage of a signal representative of each pre-defined code; and extracting, by the supply controller, the pre-defined code based on the current and voltage.

15 . The method of claim 10 , comprising:
at least one of filtering and decrypting, by the supply controller, a signal received from the plurality of resistors representative of a corresponding pre-defined code.

16 . The method of claim 10 , comprising:
receiving, by the load controller, the first power from the power supply via a first circuit path; and providing, by the load controller, the plurality of pre-defined codes to the supply controller via a second circuit path.

17 . The method of claim 10 , comprising:
outputting, by the supply controller, an alert responsive to the plurality of pre-defined codes not satisfying the output condition.

18 . The method of claim 10 , comprising:
the load controller is a first load controller, the load is a first load, and the plurality of pre-defined codes are a plurality of first pre-defined codes; and providing, by at least one second load controller coupled to a respective at least one second load, a plurality of second pre-defined codes to the supply controller.

19 . A load control system, comprising:
a power supply; and a supply controller that causes the power supply to output a first power having a current level limited to a first value, receives a plurality of pre-defined codes from a load controller coupled to a load, evaluates an output condition based on the plurality of pre-defined codes, and causes the power supply to output a second power limited to a second current level greater than the first level responsive to the plurality of pre-defined codes satisfying the output condition.

20 . The load control system of claim 19 , comprising:
the supply controller outputs an alert responsive to the plurality of pre-defined codes not satisfying the output condition.

Assignees

• Sensormatic Electronics Llc

Inventors

• Mcleod Murdo Jamie Scott
• Schofield Ian R
• Harrison Timothy J

Classifications

• G07C2009/00412

  the transmitted data signal being encrypted · CPC title

• G07C9/00023

  Physics · mapped topic

• G07C9/00309 Primary

  operated with bidirectional data transmission between data carrier and locks · CPC title

• H02J1/14

  Balancing load and power generation in DC networks · CPC title

• H02J7/0063

  Electricity · mapped topic