Introduction

This section describes the system design and how this design can support the requirements of a customer.

The information in this section helps with initial sales and designing a system to the situation of the customer.

About the system

PRF/PRA is designed to install, setup and manage a lighting system in buildings of the following types:

Office
Small industry (for example a small workshop or warehouse)
Retail
Combinations of the types mentioned

The following tiers can be distinguished:

PRF is an easy to install standalone lighting system that doesn’t rely on gateways to connect to the cloud.
PRA is a connected lighting system that adds gateways to lighting devices to provide additional features.

PRF/PRA is optimized to connect maximum 200 lights per gateway for PRA (connected) or a light network for PRF (not-connected). This translates to office buildings with a floor area of up to 1000 m2 (10,500 to 11,000 ft2), or larger in buildings with lower lighting requirements (for example up to 10,000 m2 (105,000 to 110,000 ft2) for warehousing).

Multiple networks / gateways can be used to further scale up the system. Interact - PRF can easily be updated to PRA by adding gateway(s) to connect the system to the cloud.

The application areas of the PRF/PRA system are:

Newbuild
The lighting installation is optimized for the building by design. The lighting design, placement of sensors, user interfaces, and the gateway is discussed with the customer upfront.
Renovation
Existing luminaires will be replaced by new luminaires or lamps, keeping the existing electrical infrastructure and lighting design intact. Only the gateway needs an additional power and network outlet, which in most cases is not problematic.

Roles and responsibilities

For a better understanding of the stakeholders that are being discussed in this document, below an overview of the different roles and their responsibilities.

Wholesaler/distributor

Provides the goods at the site at a certain price
Can process service requests from the Expert

Expert

Designs the installation and prepares it in the installer portal
Administrates his projects
Invites new users to the project, allocates installers to a project
Commissions the system by means of the app
Provides technical assistance at the site of the customer
Manages the lighting system by means of the customer portal
Controls the lighting system in building

Employee (user)

Controls the lighting system
Possibility of restricted access to specific groups

Abbreviations

Abbreviation	Explanation
ACL	Access Control List
AES	PRA Encryption Standard
IoT	Internet of Things
MER/SER	Main Equipment Room / Satellite Equipment Room
MQTT	Message Queuing Telemetry Transport
IAP	PRF/PRA
OTA	Over the Air
SME	Small and Medium Size Enterprises
UPS	Uninterruptible Power Supply
WG	Wireless Gateway
ZGP	Zigbee Green Power

Abbreviation

Explanation

ACL

Access Control List

AES

PRA Encryption Standard

IoT

Internet of Things

MER/SER

Main Equipment Room / Satellite Equipment Room

MQTT

Message Queuing Telemetry Transport

IAP

PRF/PRA

OTA

Over the Air

SME

Small and Medium Size Enterprises

UPS

Uninterruptible Power Supply

Wireless Gateway

ZGP

Zigbee Green Power

Terms and definitions

Abbreviation	Explanation
Access port	A switch or router port which is used to connect to an “end device”. An end device in this context is for example the Wireless Gateway.
IPv4	Internet Protocol version 4; IPv4 consists of a set of protocols that together enable communication of packets between network interfaces that are identified by 32 bit IPv4 addresses.
Light point	Either a lamp or a luminaire. When using smart lamps in a luminaire, the luminaire can consist of multiple lights. When using luminaires, each single luminaire counts as a light point.
Task level	Configurable light level on the task plane (80% of full output).
Background level	Configurable light level of 20% of task level, used to save energy when a space in not occupied.
Hold time	Configurable delay time from the moment the last movement has been detected until the start of the grace fading time.
Prolong time	Configurable time the background level is maintained at a fixed level.
Vacant level	Configurable light level used when an area is vacated. Prevents the light to switch off completely in case of security reasons (for example security cameras), or for comfort reasons. The level can also be set to completely off.

Abbreviation

Explanation

Access port

A switch or router port which is used to connect to an “end device”. An end device in this context is for example the Wireless Gateway.

IPv4

Internet Protocol version 4; IPv4 consists of a set of protocols that together enable communication of packets between network interfaces that are identified by 32 bit IPv4 addresses.

Light point

Either a lamp or a luminaire. When using smart lamps in a luminaire, the luminaire can consist of multiple lights. When using luminaires, each single luminaire counts as a light point.

Task level

Configurable light level on the task plane (80% of full output).

Background level

Configurable light level of 20% of task level, used to save energy when a space in not occupied.

Hold time

Configurable delay time from the moment the last movement has been detected until the start of the grace fading time.

Prolong time

Configurable time the background level is maintained at a fixed level.

Vacant level

Configurable light level used when an area is vacated. Prevents the light to switch off completely in case of security reasons (for example security cameras), or for comfort reasons. The level can also be set to completely off.