IJCA Vol 4 i1 2025 webmag - Flipbook - Page 24
24 The International Journal of Conformity Assessment
Table 2: Measurement of illumination in the production line
The measurement results (1-4) show differences in relevant areas such as the assembly line, near the assembly line, the assembly path/delivery area, and the SLC warehouse. Differences in lighting levels between
the day shift and night shift can also be observed. This is attributed to the use of natural daylight in the day
shift, which can result in higher lighting levels. In the night shift, arti昀椀cial lighting is used. The requirements
for lighting levels are implemented according to the internal production conditions at BMW Group (BMW
Group, 2018).
In the logistics area, the lighting levels in the goods receiving and order picking areas are also measured. The
values are shown in Table 3 below.
Table 3: Measurement results logistics
The measured values for the goods receiving and order picking areas in Table 3 are comparable to the values
for the assembly area in Table 2.
The specific framework conditions for the PoC of the optoelectronic systems are defined, as presented in
Section 5.1.1.
5.1.1 Proof of Concept for Optoelectronic Systems
Table 4 provides a summary of the framework conditions for the PoC in the field of optoelectronic systems,
including the technical parameters, required equipment, and planned test series and experiments.
Table 4: Framework conditions for the PoC on optoelectronic systems
FRAMEWORK CONDITIONS:
Technical
parameters
of the test
component
To create optimal production conditions, a one-sided illumination is used, which is always aligned with the area
of the component containing the component ID (homologation label). A schematic (left) and real representation
(right) are shown in Figure 5.
Figure 5: Test setup for optoelectronic systems (schematic and real views)
The distance (a) between the camera and the component is 110 cm. Both the camera angle of its optical axis to
the component (b) and the lamp angle to the 昀氀oor (c) are varied. The illumination intensity is set to values ranging
from 400 to 950 lux to cover all illumination levels (see 5.1 Table 2). The values are measured using a luxmeter
(Rose, 2024).
