ABSTRACT
The paper based on the topic "Precise testing device development of special
lighting system shines condition". The topic duty is to design a precise testing device of
special lighting system shines condition, develop to product, and evaluate this testing
device system error. The topic’s difficulty lies in this special lighting system shines
condition having extremely strictly on optical quality parameter, no similar lighting
system in the domestic and related material extremely limited.
The paper content mainly includes the testing device system plan design and the
testing device system design two parts. The plan design because does not have the
existing measuring instruments and the fixed test method to carry on, therefore in the
test process we have used many kinds of testing methods to compare and analysis. In
this process, reasonably used some traditional optics test methods, and improve it to
design practical test plan to this special lighting system. The testing device system
design part introduces the test system two essential components: photoelectric
auto-collimation, grating encoding device design, illumination testing software and
three-dimensional geographical map software, including design proposal, material and
equipment choice, image gathering and software compilation and so on.
The photoelectric auto-collimation is used to test the special lighting system
rotation angle in vertical, common angular instruments are very difficult to satisfy this
rotation angle request, the development photoelectric auto-collimation must have big
caliber in order to satisfy big testing angle and high-precision request. In design use the
slit as light source to shine, and use more image element linear CCD to accept the slit
image, simultaneously the computer demonstrates the testing angle.
The grating encoding device is use to test the special lighting system rotation angle
in horizon. According to the special lighting system horizon rotation angle and the
precision request, this grating encoding device is placed in the foundation center of
rotation place, different rotation angle will correspond to different pulse number
which the grating encoding device produce, then through control device connect to
computer and demonstration rotation angle.
Illumination testing software and three-dimensional geographical map software are
used to gather and handle light intensity signal, and display the result.
Meanwhile carry on the theoretical error analysis and the actual test calibration to
each above independence device in order to satisfy the actual test condition request, and
have better control in the actual operation performs. From each independent test device,
we can make the installment system error analysis and computation, carry on the
installment and debugging in this foundation to the whole testing device, and evaluate
this testing device system error.
Key word: special lighting system, photoelectric auto-collimation,
grating encoding device, calibration.