Method and system for designing lighting installations

• US 5,521,852 A
• Filed: 10/29/1993
• Issued: 05/28/1996
• Est. Priority Date: 10/29/1993
• Status: Expired due to Fees

• Current Assignee: Holophane Corp. (Acuity Brands, Inc.)
• Original Assignee: Holophane Lighting Incorporated
• Inventors: Hibbs, John D., Stang, Douglas J.
• Primary Examiner(s): Cosimano, Edward R.
• Assistant Examiner(s): SHAH, KAMINI S
• Application Number:
  US08/146,576
• Time in Patent Office: 942 Days
• Field of Search: 364/550, 364/578, 364/571.02, 364/709.02, 364/512, 364/578, 356/375, 356/121, 382/1, 382/28, 315/158, 395/118-121, 395/126
• US Class Current: 703/1
• CPC Class Codes: H05B 39/042 by measuring the incident light
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: Y02B 20/00 Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

A method and system for designing a lighting installation. The system includes a processor for executing the method, which includes generating lighting area input data signals based on selected parameters associated with a lighting area, and generating luminaire input data signals based on selected parameters associated with a luminaire. The method also includes processing the lighting area input data signals to obtain a lighting area factor, and processing the luminaire input data signals to obtain a photometry factor. The method also includes processing the lighting area factor and the photometry factor to determine a light level value in the lighting area, and generating a light level output signal based on the light level value determined. The system and method further include a system and method for manipulating data three-dimensionally in a spatial view on a video monitor.

Claims

1. A method for use in designing a lighting installation, the method for use with a computer having a processor, a monitor, and a data acquisition device, the method comprising:

generating lighting area input data signals via the data acquisition device based on selected parameters associated with a lighting area, generating lighting area input data signals including

defining a lighting area boundary,

defining a light level analysis plane,

defining a reflective surface,

selecting a reflectance value for the reflective surface, and

selecting a plurality of reflectance panels in the reflective surface via the data acquisition device, each reflectance panel represented by a reflectance point and having a reflectance value equal to the reflectance value selected for the reflective surface;

generating luminaire input data signals via the data acquisition device based on selected parameters associated with a luminaire, generating luminaire input data signals including

selecting the luminaire, the luminaire having standard photometric data associated therewith,

selecting a location for the luminaire in the lighting area,

defining a plurality of vectors representing the standard photometric data associated with the luminaire, and

defining a luminaire update code based on the plurality of vectors representing the standard photometric data associated with the luminaire;

processing the lighting area input data signals to obtain a lighting area factor;

processing the luminaire input data signals to obtain a photometry factor;

processing the lighting area factor and the photometry factor to determine a light level value in the lighting area; and

generating via the processor and the monitor a light level output signal based on the light level value determined.

2. The method of claim 1 wherein the number of reflectance panels in the reflective surface is inversely related to the distance between the reflective surface and the light level analysis plane.

3. The method of claim 1 wherein processing the lighting area input data signals comprises:

determining a first preliminary light level factor based on inter-reflectance between the plurality of reflectance panels in the reflective surface given a preselected unit of light;

determining a second preliminary light level factor based on reflectance from the plurality of reflectance panels in the reflective surface to the plurality of light level analysis points on the light level analysis plane given the preselected unit of light; and

determining a final light level factor based on the first and second preliminary light level factors.

4. The method of claim 3, the final light level factor having a plurality of elements, wherein processing the lighting area input data signals further comprises:

converting each of the plurality of elements of the final light level factor to a one byte character; and

storing in memory the final light level factor in the form of the one byte characters.

5. The method of claim 3 wherein processing the luminaire input data signals comprises:

determining a partial indirect light level component based on the luminaire location, the luminaire update code, and the reflectance panels in the reflective surface; and

determining a direct light level component based on the luminaire location, the luminaire update code, and the light level analysis points.

6. The method of claim 5 wherein processing the lighting area factor and the photometry factor comprises:

determining a complete indirect light level component based on the final light level factor and the partial indirect light level component; and

determining a light level value based on the complete indirect and direct light level components.

7. A system for use in designing a lighting installation, the system comprising:

means for generating lighting area input data signals based on selected parameters associated with a lighting area, the means for generating lighting area input data signals including

means for defining a lighting area boundary,

means for defining a light level analysis plane,

means for defining a reflective surface,

means for selecting a reflectance value for the reflective surface, and

means for selecting a plurality of reflectance panels in the reflective surface, each reflectance panel represented by a reflectance point and having a reflectance value equal to the reflectance value selected for the reflective surface;

means for generating luminaire input data signals based on selected parameters associated with a luminaire, the means for generating luminaire input data signals including

means for selecting the luminaire, the luminaire having standard photometric data associated therewith,

means for selecting a location for the luminaire in the lighting area,

means for defining a plurality of vectors representing the standard photometric data associated with the luminaire, and

means for defining a luminaire update code based on the plurality of vectors representing the standard photometric data associated with the luminaire;

means for processing the lighting area input data signals to obtain a lighting area factor;

means for processing the luminaire input data signal to obtain a photometry factor;

means for processing the lighting area factor and the photometry factor to determine a light level value in the lighting area; and

means for generating a light level output signal based on the light level value determined.

8. The system of claim 7 wherein the number of reflectance panels in the reflective surface is inversely related to the distance between the reflective surface and the light level analysis plane.

9. The system of claim 7 wherein the means for processing the lighting area input data signals comprises:

means for determining a first preliminary light level factor based on inter-reflectance between the plurality of reflectance panels in the reflective surface given a preselected unit of light;

means for determining a second preliminary light level factor based on reflectance from the plurality of reflectance panels in the reflective surface to the plurality of light level analysis points on the light level analysis plane given the preselected unit of light; and

means for determining a final light level factor based on the first and second preliminary light level factors.

10. The system of claim 9, the final light level factor having a plurality of elements, wherein the means for processing the lighting area input data signals further comprises:

means for converting each of the plurality of elements of the final light level factor to a one byte character; and

means for storing the final light level factor in the form of the one byte characters.

11. The system of claim 9 wherein the means for processing the luminaire input data signals comprises:

means for determining a partial indirect light level component based on the luminaire location, the luminaire update code, and the reflectance panels in the reflective surface; and

means for determining a direct light level component based on the luminaire location, the luminaire update code, and the light level analysis points.

12. The system of claim 11 wherein the means for processing the lighting area factor and the photometry factor comprises:

means for determining a complete indirect light level component based on the final light level factor and the partial indirect light level component; and

means for determining a light level value based on the complete indirect and direct light level components.