Data acquisition methods and apparatus for a network connected LED driver
View Patent ↗A lighting system including monitoring of input power and output power parameters to a set of lighting loads to detect power faults and/or anomalies. The set of sensing circuits include primary side and secondary side sensing circuits that communicate with a set of monitoring circuits to process the information supplied by the sensing circuits. If a fault and/or anomaly is sensed or detected, a signal is transmitted to provide an alert.
1. A light emitting diode (LED) driver, comprising:
a set of sensing circuits, the set of sensing circuits including a set of primary side sensing circuits and a set of secondary side sensing circuits;
an alternating current (AC) input;
an isolation barrier for dividing the LED driver into a primary side, comprising the set of primary side sensing circuits disposed between the AC input and the isolation barrier, and a secondary side, comprising the set of primary side sensing circuits disposed opposite the isolation barrier from the AC input;
a primary side monitoring circuit for receiving and processing primary side data from the set of primary side sensing circuits;
a secondary side monitoring circuit for receiving and processing secondary side data from the set of secondary side sensing circuits;
a lighting status apparatus, and
a communication interface;
wherein the lighting status apparatus is configured to generate a first message in response to determining, using the primary side monitoring circuit, that a power anomaly or fault has occurred based on the primary side data and to transmit the first message to an external controller; and
the lighting status apparatus is configured to generate a second message in response to determining, using the secondary side monitoring circuit, that a power anomaly or fault has occurred based on the secondary side data and to transmit the second message to the external controller.
2. The LED driver of claim 1 wherein the isolation barrier is located within a DC/DC power converter.
3. The LED driver of claim 2 wherein the primary side comprises a power factor conversion apparatus.
4. The LED driver of claim 2 , wherein the secondary side comprises:
a DC output bus connected to the DC/DC power converter;
a power monitor connected to the DC output bus; and
a set of output power channels connected to an output of the power monitor, the set of output power channels associated with a set of light loads.
5. The LED driver of claim 4 , wherein the set of output power channels and the set of light loads are associated in a one-to-one relationship.
6. The LED driver of claim 1 , wherein the set of sensing circuits comprise voltage sensing circuits and current sensing circuits.
7. The LED driver of claim 1 , further comprising a data isolator for isolating the primary side monitoring circuit from the secondary side monitoring circuit.
8. The LED driver of claim 1 , further comprising an auxiliary power source.
9. The LED driver of claim 1 , further comprising a visual display for displaying an LED driver status.
10. The LED driver of claim 1 , further comprising a set of dials for receiving input from a user.
11. A method of determining faults within a light emitting diode (LED) driver comprising:
determining primary side data and secondary side data via a set of primary side sensing circuits and a set of secondary side sensing circuits, respectively, of a light emitting diode (LED) driver, the LED driver including an alternating current (AC) input and an isolation barrier for dividing the LED driver into a primary side, comprising the set of primary side sensing circuits disposed between the AC input and the isolation barrier, and a secondary side, comprising the set of primary side sensing circuits disposed opposite the isolation barrier from the AC input;
processing the primary side data, via a primary side monitoring circuit, to determine that a primary side power anomaly or fault has occurred and to generate a first message indicative of the primary side power anomaly or fault in response;
transmitting the first message to a lighting system controller;
processing the secondary side data, via a secondary side monitoring circuit to determine that a secondary side power anomaly or fault has occurred and to generate a second message indicative of the secondary side power anomaly or fault in response; and
transmitting the second message to the lighting system controller.
12. The method of claim 11 , further comprising storing the primary side data and the secondary side data for retrieval by a data acquisition controller.
13. The method of claim 11 wherein processing the primary side data comprises:
comparing the primary side data with an expected value range; and
determining that a primary side power anomaly has occurred in response to the primary side data being outside of the expected value range.
14. The method of claim 11 wherein processing the secondary side data comprises:
comparing the secondary side data with an expected value range; and
determining that a secondary side power anomaly has occurred in response to the secondary side data being outside of the expected value range.
15. The method of claim 11 , further comprising displaying a status of the LED driver on a visual display.
16. The method of claim 15 , further comprising measuring at least one parameter within the LED driver and displaying a corresponding error code for the measured at least one parameter on the visual display.
17. The method of claim 11 , wherein the primary side data and the secondary side data are indicative of data for either side of a galvanic barrier.
18. The method of claim 11 , wherein one or more of the primary side monitoring circuit and the secondary side monitoring circuit comprise one or more processors.
19. The method of claim 11 , further comprising isolating the primary side monitoring circuit from a primary side sensing circuit of the LED driver using a galvanic isolation barrier.