OPHIR FluxGage, Руководство пользователя

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FluxGage User Manual 4
2 Introduction
The FluxGage LED luminaire system measures total flux, color parameters and flicker of LED
luminaires. The FluxGage measures in 2 pi geometry.
2.1 Operation principle
The FluxGage measures by collecting light using photovoltaic cells. Unlike an integrating sphere,
the FluxGage does not rely on multiple reflections and its interior is black. Light from the DUT
hits the interior walls of the FluxGage, gets absorbed and nearly no light bounces back again.
This greatly reduces the effect of the DUT’s size and shape on the measurement.
An integrated spectrometer is used to measure color parameters (CCT, CRI, Duv, and CIE 1931
chromaticity coordinate), and to translate the current produced by the photovoltaics into
lumens.
A fast photodiode sensor is used to measure flicker.
An integrated temperature sensor and fans control the temperature of the FluxGage.
Spectrometer
PC
Temperature
sensor
12V
adapter
110V/220V
Solar panel
current
sensor
Flicker sensor
fast detector
circuit
Temperature
sensor circuit
photodiode
fiber
Solar cells
MCU
USB
Ethernet
12V in
Main PCB
Block Diagram