Electronic Lamp Identification System

• US 20080185539A1
• Filed: 04/20/2006
• Published: 08/07/2008
• Est. Priority Date: 04/26/2005
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Lulofs, Klaas Jacob, Mastenbroek, Olaf
• Granted Patent: US 7,759,873 B2
• Time in Patent Office: Days
• US Class Current: 250/503.1
• CPC Class Codes: A61N 2005/0661 ultraviolet
• CPC Class Codes: A61N 5/0614 Tanning
• CPC Class Codes: H05B 41/36 Controlling
• CPC Class Codes: H05B 47/20 Responsive to malfunctions or to light source life; for protection

Abstract

An identification system for a light radiation source (103) having a control circuit (107) for communicating with an identification circuit (108) associated with the light radiation source, wherein the identification circuit is arranged for storing data relating to the light radiation source. During operation, the control circuit communicates with the identification circuit via a signal path comprising at least a portion of a first electric wire (112) provided for energizing the light radiation source such that it is used as a first transmitting antenna for communicating with the identification circuit. The operation of the light radiation source is controlled in dependence on the data retrieved from the identification circuit. Depending on the result of the identification, operation of the light radiation source can be authorized or prevented, thus blocking the use of an incorrect radiation source for a given application.

Claims

1. An identification system for a light radiation source (103), comprising a control circuit (107) for communicating with an identification circuit (108) associated with the light radiation source, wherein the identification circuit is arranged for storing data relating to the light radiation source, and wherein, during operation, the control circuit is electrically coupled to the light radiation source via a first electric wire (112) provided for energizing the light radiation source,

characterized in that the control circuit, during operation, communicates with the identification circuit via a magnetic coupling between the first electric wire and the identification circuit or via a capacitive coupling between the identification circuit and a cap of the light radiation source, with at least a portion of the first electric wire acting as a first transmitting antenna.

2. An identification system for a light radiation source according to claim 1, characterized in that the identification system is further arranged for controlling the operation of the light radiation source in dependence on data retrieved from the identification circuit.

3. An identification system for a light radiation source according to claim 1, characterized in that the identification system is further arranged to store information on or corresponding to the number of operating hours of the light radiation source.

4. An identification system for a light radiation source according to claim 3, characterized in that the identification system is further arranged to generate a signal to alter the energizing of the light radiation source in dependence on the number of operating hours in order to maintain a substantially constant radiation output.

5. An identification system for a light radiation source according to claim 1, characterized in that the identification system is further arranged to store information on or corresponding to the number of start-ups of the light radiation source.

6. An identification system for a light radiation source according to claim 1, characterized in that the control circuit is arranged to communicate with the identification circuit by means of a modulated antenna current signal.

7. An identification system for a light radiation source according to claim 6, characterized in that the control circuit is coupled to a conducting ground (106).

8. An identification system for a light radiation source according to claim 6, characterized in that the control circuit (107) is electrically coupled to the first electric wire (112), and in that the control circuit (107) is electrically coupled to a second electric wire (301) provided for energizing the light radiation source, such that, during operation, the second electric wire acts as a second transmitting antenna cooperating with the first transmitting antenna as a dipole antenna.

9. An identification system for a light radiation source according to claim 1, characterized in that the control circuit is arranged to communicate with the identification circuit by means of a modulated antenna voltage signal.

10. An identification system for a light radiation source (103) according to claim 7, characterized by:

an electromagnetic ballast (101) for energizing the light radiation source via the first electric wire (112),

a signal-passing device (110) coupled to the first electric wire in parallel to the electromagnetic ballast for passing a modulated antenna current signal or a modulated antenna voltage signal used for communication between the control circuit (107) and the identification circuit (108).

11. An identification circuit for a light radiation source according to claim 10 characterized by

a signal-blocking device (111), coupled in series with the electromagnetic ballast, for preventing a modulated antenna current signal or a modulated antenna voltage signal used for communicating with the identification circuit from proceeding in the direction of a power supply provided for energizing the electromagnetic ballast.

12. A method of operating a light radiation source, using an identification system according to claim 1, the method comprising the following steps:

reading-out of data stored in the identification circuit (108),

comparing the read-out data with reference data,

authorizing, preventing, interrupting or altering the operation of the light radiation source (103).

13. A light radiation source (103) suitable for cooperating with an identification system according to claim 1, comprising an identification circuit (108) arranged to communicate with the control circuit (107) via at least a portion of the first electric wire (112).

14. A light radiation source according to claim 13, characterized in that the identification circuit is magnetically coupled to the first electric wire via a current transformer (109, 117).

15. A light radiation source according to claim 14, characterized in that the current transformer comprises a magnetic core (109) surrounding the first electric wire and a coil (117) wound around the magnetic core, said coil being coupled to the identification circuit (108).

16. A light radiation source according to claim 13, characterized in that the identification circuit (108) is coupled via a first output to the first electric wire (112) and via a second output to a conducting element (501) of the light radiation source.

17. A light radiation source according to claim 13, wherein the light radiation source is a mercury vapor discharge lamp for generating UV radiation for suntanning purposes or for disinfection purposes.

18. A solarium comprising an identification system for a light radiation source according to claim 1.

19. A solarium according to claim 18, characterized in that, during operation, the first transmitting antenna operates against a reference potential created by a metal part of the solarium.

20. A UV disinfection system comprising an identification system for a light radiation source according to claim 1.