Page 92 - Lehrbuch Neigungsmessung deutsch 2018.indd

COMPENDIUM INCLINATION MEASUREMENT
WYLER AG, WINTERTHUR / SWITZERLAND

INCLINATION OF THE SENSOR - DEFLECTION OF THE PENDULUM - CHARACTERISTIC OF THE FREQUENCY
No inclination
left capacity = right capacity

Postive inclination
left capacity > right capacity

Negative inclination
left capacity < right capacity

RELATIONSHIP BETWEEN SAMPLING TIME (SAMPLING TIME) AND VARIABLE MEASURING TIME OF THE SENSOR

“Bit 12“ is the signal for the selector position.
11
Therefore, only 2 pulses are counted per
Selector position = Bit 12
side.
Sampling Time
Variable measuring time
t = f (F) effective 2 12 Pulse
Position
selector
Signal

Average value Average value
frequency frequency
left F L right F R
 frequency left F
Inclination = f(F) = L
 frequency right F
R
Example, according to the above illustration
Left side S1:
1 4096
F = 550,000 Hz: t = x = 3.7 ms
1 550,000 Hz 2
Sampling Time:
t max = 8 seconds
Right side S2: t = 10ms (depending on baudrate)
1 4096
min
F = 350,000 Hz: t = x = 5.8 ms
2
350,000 Hz 2
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