The SEDRIS Data Representation Model
APPENDIX A - Classes
Flashing Light Behaviour

Class Name: Flashing Light Behaviour

Superclass - <Light Rendering Behaviour>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class specifies behaviour specific to a flashing light.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

This class appears on only one page of the DRM class diagram.

Example

  1. Consider a <Point> instance representing a warning light at a railroad crossing. The <Point> instance has a <Light Rendering Properties> component, which in turn has a <Flashing Light Behaviour> component and a <Light Rendering Properties Control Link> component. The <Light Rendering Properties Control Link> instance is used to turn on the light, so that the light flashes when indicating that a train is approaching.

FAQs

No FAQs supplied.

Constraints

Component of (two-way) (inherited)

Inherited Field Elements

This class has no inherited field elements.

Field Elements

SE_Long_Float

period;

1

SE_Long_Float

delay;

2

SE_Long_Float

duration;

3

Notes

Fields Notes

period

The period field specifies the total period of time, measured in seconds, and including both the on and off parts of the flashing cycle.

delay

The delay field specifies a delay period, measured in seconds, before the flashing behaviour is to begin. It can be used to allow a collection of DRM objects representing lights to appear asynchronous.

duration

The duration field specifies the period of time, measured in seconds, that the light is on, and shall be less than the period field value.

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Last updated: July 1, 2011 Copyright © 2011 SEDRIS™