Philips Semiconductors
Integrated rotational speed sensor
Preliminary specification
KMI15/1
1.5
handbook, halfpage
d
d0
1
0.5
MRA966
4
handbook, halfpage
d
(mm)
3
2
d
1
tooth
frequency
ft
MRA965
0
0
1
2
3
4
5
module m (mm)
do = measuring distance for a gear wheel with module m = 2 mm.
Fig.16 Normalized maximum sensing distance as
a function of gear wheel module.
0
0
1
2
3
4
f (kHz)
VCC = 12 V; module = 2 mm.
Fig.17 Sensing distance as a function of tooth
frequency.
1996 Dec 05
9