Registering a replaceable RF-enabled fluorescent lamp starter unit to a master unit

• US 20110080091A1
• Filed: 10/01/2009
• Published: 04/07/2011
• Est. Priority Date: 10/01/2009
• Status: Active Grant

• Current Assignee: IXYS Intl Limited (Littelfuse Incorporated)
• Original Assignee: ZiLOG Incorporated (Littelfuse Incorporated)
• Inventors: Staab, David R., Baker, Murray C.
• Granted Patent: US 9,155,167 B2
• Time in Patent Office: Days
• US Class Current: 315/61
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: H05B 47/13 by using passive infrared detectors
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A replaceable fluorescent lamp starter unit of a fluorescent light fixture has a built-in RF transceiver, and communicates wirelessly with a motion-detecting master unit. The starter unit can be controlled to turn off and turn on the fluorescent lamp of the fixture. The starter unit is registered to the master unit so that the starter unit will not respond to wireless communications from other sources. During registration, registration information is loaded into the starter unit and stored in non-volatile memory. The stored registration information is later usable to determine whether subsequently received wireless communications are for the starter unit. Systems of existing light fixtures are retrofitted with such wireless starter units, and thereby made controllable by a master unit so that the master unit can turn off the lights to conserve energy if room occupancy is not detected. The master unit can control lamp fixtures individually or as a group.

Claims

1. A method comprising:

(a) registering a wireless fluorescent lamp starter unit to a master unit.

2. The method of claim 1, wherein the wireless fluorescent lamp starter unit includes a Radio-Frequency (RF) receiver and does not include a glass tube, the wireless fluorescent lamp starter unit having a substantially cylindrical outer surface and a circular bottom surface, and wherein two terminals extend from the circular bottom surface.

3. The method of claim 1, further comprising:

(b) using the wireless fluorescent lamp starter unit to turn off a fluorescent lamp in response to receiving a wireless communication from the master unit.

4. The method of claim 1, wherein the registering involves storing registration information in the starter unit so that the registration information is then usable to distinguish wireless communications received from the master unit from other wireless communications received onto the master unit.

5. The method of claim 1, wherein said registering of (a) involves:

(a1) detecting a direct current (DC) voltage present between two terminals of the starter unit;

(a2) in response to the detecting of (a1) entering a registration mode; and

(a3) in the registration mode receiving registration information from the master unit and storing the registration information in non-volatile storage in the starter unit, wherein the registration information is usable by the starter unit to associate the starter unit and the master unit, and wherein the detecting of (a1), the entering of (a2) and the receiving and storing of (a3) are performed by the starter unit.

6. The method of claim 5, wherein the registration information received in (a3) is received via a wireless communication from the master unit to the starter unit.

7. The method of claim 5, wherein the registration information received in (a3) is received via a wired connection between the master unit and the starter unit.

8. The method of claim 1, wherein the registering of (a) involves:

(a1) entering a registration mode in response to an exiting of a power up condition of the starter unit; and

(a2) in the registration mode receiving registration information from the master unit and storing the registration information in non-volatile storage in the starter unit, wherein the registration information is usable by the starter unit to identify wireless communications from the master unit, and wherein the entering of (a1) and the receiving and storing of (a2) are performed by the starter unit.

9. The method of claim 8, wherein the starter unit maintains status information indicative of whether or not the starter unit is registered, and wherein the registration information received and stored in (a2) is used to register the starter unit if the status information indicates that the starter unit is not registered at the time of the receiving of (a2).

10. The method of claim 1, wherein the registering of (a) involves:

(a1) entering a registration mode by detecting a power up condition; and

(a2) in the registration mode receiving registration information from the master unit via a wireless communication and storing the registration information in non-volatile storage in the starter unit, wherein the registration information is usable to associate the starter unit and the master unit, and wherein the entering of (a1) and the receiving and storing of (a2) are performed by the starter unit.

11. The method of claim 10, wherein the power up condition detected in (a1) is a condition of repeatedly experiencing application of an alternating current (AC) voltage to the starter unit.

12. The method of claim 1, wherein said registering of (a) involves:

(a1) detecting a repeated applying of an alternating current (AC) voltage to the starter unit;

(a2) in response to the detecting of (a1) entering a registration mode; and

(a3) in the registration mode receiving registration information from the master unit and storing the registration information in non-volatile storage in the starter unit, wherein the registration information is usable to associate the starter unit and the master unit, and wherein the detecting of (a1), the entering of (a2) and the receiving and storing of (a3) are performed by the starter unit.

13. A method comprising:

providing a wireless fluorescent lamp starter unit adapted to be registered with a master unit, whereupon after registration of the starter unit with the master unit the starter unit is usable to turn off a fluorescent lamp.

14. The method of claim 13, wherein the starter unit is adapted to receive a wireless communication and in response to turn off the fluorescent lamp, and wherein the starter unit is adapted to be plugged into a receiving socket of a light fixture of which the fluorescent lamp is a part.

15. The method of claim 13, wherein the starter unit is adapted to be registered with the master unit by detecting a condition on two terminals of the starter unit and in response to the detecting of the condition receiving registration information from the master and storing the registration information into the starter unit.

16. A wireless fluorescent lamp starter unit, comprising:

a first terminal;

a second terminal;

a receiver that receives a wireless communication onto the wireless fluorescent lamp starter unit;

fluorescent lamp interface circuitry coupled to the first terminal to the second terminal; and

a microcontroller that executes an amount of firmware, wherein the microcontroller stores registration information and causes the starter unit to use the registration information to determine whether the wireless communication is intended for the wireless fluorescent lamp starter unit, wherein the microcontroller is adapted to control the fluorescent lamp interface circuitry such that a fluorescent lamp coupled to the first and second terminals can be selectively turned on under firmware control and turned off under firmware control.

17. The wireless fluorescent lamp starter unit of claim 16, wherein execution of the amount of firmware by the microcontroller causes:

the microcontroller and the fluorescent lamp interface circuitry to operate together to determine whether a direct current (DC) voltage is present between the first and second terminals;

the microcontroller to enter a registration mode if it is determined by the microcontroller that the DC voltage is present between the first and second terminals;

in the registration mode, the wireless fluorescent lamp starter unit to store the registration information; and

the registration information to be used by the wireless fluorescent starter unit to determine whether a wireless communication is intended for the wireless fluorescent starter unit.

18. The wireless fluorescent lamp starter unit of claim 16, wherein the registration information is received onto the wireless fluorescent lamp starter unit via a wireless communication received onto the receiver.

19. The wireless fluorescent lamp starter unit of claim 16, wherein the registration information is received onto the wireless fluorescent lamp starter unit across at least one of the first and second terminals.

20. A wireless fluorescent lamp starter unit, comprising:

a first terminal;

a second terminal, wherein the first terminal and the second terminal are adapted to be coupled to a fluorescent lamp;

a Radio-Frequency (RF) receiver that receives an RF communication onto the wireless fluorescent lamp starter unit;

fluorescent lamp interface circuitry coupled to the first terminal to the second terminal; and

means for receiving registration information and for causing the registration information to be used by the wireless lamp starter unit to determine whether the RF communication is intended for the wireless fluorescent lamp starter unit, wherein the means is also for controlling the fluorescent lamp interface circuitry such that the fluorescent lamp is turned off in response to receiving of the RF communication onto the wireless fluorescent lamp starter unit.

21. The wireless fluorescent lamp starter unit of claim 20, wherein the starter unit has a substantially cylindrical outer surface and does not include a glass tube.