Data converter for a lighting system, and method for operating a lighting system

• US 7,259,528 B2
• Filed: 09/14/2004
• Issued: 08/21/2007
• Est. Priority Date: 09/29/2003
• Status: Active Grant

• Current Assignee: Optotronic GmbH (Inventronics (Hangzhou), Inc.)
• Original Assignee: Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen mbH (Ams-Osram AG)
• Inventors: Pilz, Axel
• Primary Examiner(s): Wong; Don
• Assistant Examiner(s): Vy; Hung Tran
• Application Number:
  US10/939,350
• Publication Number:
  US 20050067982A1
• Time in Patent Office: 1,071 Days
• Field of Search: 315291-295, 315/312, 315/314, 315/316, 315/318, 315/324, 315/362, 700/17, 700/90
• US Class Current: 315/294
• CPC Class Codes: H05B 47/18 via data-bus transmission

Abstract

A data converter for a lighting system, has a data input for the data converter to communicate with a central control device of the lighting system, a data output for the data converter to communicate with lamp operating elements, and an evaluation unit for evaluating the data received from the central control device and for controlling and monitoring the functions of the lamp operating elements. The data converter permits an enlargement of the number of the lamp operating elements, in the lighting system, that can be monitored by the central control device.

Claims

1. A method of operating a lighting system comprising the steps of providing a central control device having a control output connected to first lamp operating means and to a data input of a data converter whereby control signals generated by the central control device are received by the data converter and by the first lamp operating means, the data converter having a data output connected to second lamp operating means, evaluating the control signals from the central control device and converting into commands for controlling the second lamp operating means as a function of an evaluation of the control signals by the data converter.

2. The method as claimed in claim 1, wherein at least two different operating modes of said data converter are provided.

3. The method as claimed in claim 2, wherein in accordance with a first operating mode the data converter converts the control signals received from the central control device into similar commands for all the lamp operating means monitored by said data converter.

4. The method as claimed in claim 3, wherein the data converter evaluates both digital data and analog control signals of the central control device and converts them into commands for the lamp operating means monitored by said data converter.

5. The method as claimed in claim 1, wherein the grouping of the lamp operating means is defined during a start-up phase of the lighting system.

6. The method as claimed in claim 5, wherein during the start-up phase a start-up procedure of the data converter is started in order to provide address codes to the lamp operating means monitored by said data converter, and subsequently a start-up procedure of the central control device is started in order to provide address codes to said data converter and any lamp operating means directly monitored by said central control device, the data converter being selected by the central control device, for grouping the lamp operating means monitored by the data converter, until all the lamp operating means monitored by the data converter are divided into groups, and upon each selection by the data converter a lamp operating means monitored by said data converter being successively assigned to a group of lamp operating means.

7. The method as claimed in claim 1, wherein the data converter automatically carries out a status monitoring of the lamp operating means connected to its data output.

8. The method as claimed in claim 7, wherein said status monitoring of the lamp operating means is carried out cyclically at regular time intervals.

9. The method as claimed in claim 7, wherein the data converter answers queries from the central control device concerning the status of the lamp operating means for the lamp operating means connected to said data output.

10. The method as claimed in claim 9, wherein the data converter answers queries from the central control device concerning the properties of the lamp operating means for the lamp operating means connected to said data output with a prescribed standard value for the respective interrogated property of said lamp operating means when the lamp operating means differ from one another with reference to the respective interrogated property.

11. The method as claimed in claim 9, wherein the data converter answers queries from the central control device concerning the properties of the lamp operating means for the lamp operating means connected to said data output with a reference value for the respective interrogated property when said lamp operating means are identical with respect to the respective interrogated property, the data converter using as reference value the value of the respective interrogated property of a lamp operating means, selected by the data converter, of the lamp operating means connected to said data output.