Setting The Measurement Start Timing; Internal Processing Of Sensor Controller - Omron ZW-7000 Series User Manual

3-1 Setting the Measurement Start Timing

Internal Processing of Sensor Controller

The Sensor Controller performs processing in the following 3 parts according to the logical beam sent from the
Sensor Head. Since each part is performed in parallel inside the Sensor Controller, the measurement cycle is
determined by the part with the longest processing time. When the measurement cycle is shortened, the
logical beam exposure time shortens, so the measurement accuracy of targets to measure with lower
reflectivity may not meet the specification. Also, due to the processing time of measurement processing and
output processing, the measurement cycle cannot be below 20 us.
Measurement
Start Timing
Measureing
Logical
Logical
beam
beam (1)
exposure
Measure
according
to the light
reception
waveform
Measurement
results output
The Sensor Controller starts exposing logical beam when the measurement start timing is specified.
When the light power is 100%, exposure starts when the measurement starts, but when the light power is less
than 100%, there is a period with no exposure after the measurement starts. The exposure starts when the
measurement starts and ends when the measurement cycle ends.
light power is 100%
Measurement
Start Timing
Logical
beam
exposure
88

Setting the Measurement Start Timing

Measurement
Start Timing
cycle
Logical
beam (2)
Measurement
(1)
Measureing cycle
(exposure time)
100%
Logical
beam
Measurement Measurement
Start Timing Start Timing
Logical
beam (3)
Measurement
(2)
Output (1) Output (2)
light power is 50%
Measurement
Start Timing
Logical
beam
exposure
Measurement
Start Timing
Logical
・・ ・
beam (4)
Measurement
・ ・ ・
(3)
Output (3)
Measureing cycle
(exposure time)
50% 50%
Logical
beam
ZW-7000/5000
User's Manual
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