Data acquisition methods and apparatus for a network connected LED driver
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:
an AC input;
a galvanic isolation barrier dividing the LED driver into a primary side and a secondary side, wherein the primary side consists of circuitry coupled between the AC input and the galvanic isolation barrier;
a set of sensing circuits, the set of sensing circuits including a set of primary side sensing circuits in the primary side of the LED driver, and a set of secondary side sensing circuits in the secondary side of the LED driver; and
a data acquisition apparatus including:
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 and the primary side monitoring circuit are configured to determine if a power anomaly or fault has occurred based on the primary side data and the lighting status apparatus and the secondary side monitoring circuit are configured to determine if a power anomaly or fault has occurred based on the secondary side data; and
wherein if occurrence of a power anomaly or fault is determined, the communication interface is configured to transmit a signal indicative of the power anomaly or fault to an external controller.
2. The LED driver of claim 1 , wherein at least a portion of the galvanic isolation barrier is located within a DC/DC power converter.
3. The LED driver of claim 1 , 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 , wherein the data acquisition apparatus further comprises a data isolator for isolating the primary side monitoring circuit from the secondary side monitoring circuit, the primary side monitoring circuit is in the primary side of the LED driver, the secondary side monitoring circuit is in the secondary side of the LED driver, and the galvanic isolation barrier includes the data isolator.
8. The LED driver of claim 1 wherein the data acquisition apparatus further comprises an auxiliary power source.
9. The LED driver of claim 1 wherein the data acquisition apparatus further comprises:
a visual display for displaying an LED driver status.
10. The LED driver of claim 9 , wherein the data acquisition apparatus further comprises:
a set of dials for receiving input from a user.
11. A method of determining faults within a light emitting diode (LED) driver having a galvanic isolation barrier dividing the LED driver into a primary side and a secondary side, the primary side consisting of circuitry coupled between an AC input and the galvanic isolation barrier, the method comprising:
acquiring primary side data via a set of primary side sensing circuits in the primary side of the LED driver;
acquiring secondary side data via a set of secondary side sensing circuits in the secondary side of the LED driver;
processing the primary side data, via a primary side monitoring circuit, to determine whether a primary side power anomaly or fault has occurred;
processing the secondary side data, via a secondary side monitoring circuit to determine whether a secondary side power anomaly or fault has occurred; and
transmitting a signal to a lighting system controller in response to determining that a power anomaly or fault has occurred.
12. The method of claim 11 , further comprising:
storing the primary side data and secondary side data for retrieval by a data acquisition lighting system 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 is not within 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 11 , further comprising:
measuring parameters and error codes within the LED driver.
17. The method of claim 11 , wherein the primary side monitoring circuit and the secondary side monitoring circuit comprise one or more processors.
18. The method of claim 11 , wherein the galvanic isolation barrier comprises magnetic and/or optical isolation.
19. The LED driver of claim 1 , wherein the galvanic isolation barrier comprises magnetic and/or optical isolation.
20. The LED driver of claim 7 , wherein the data isolator comprises magnetic and/or optical isolation.