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Philips Semiconductors
Electronic Compass Design using
KMZ51 and KMZ52
11. APPLICATION EXAMPLES
Following block diagrams represent ideas for the realization of complete compass systems. The functional
blocks for signal conditioning and direction determination shown here have been described in earlier sections of
this paper.
2-dimensional
field sensor
KMZ52
compensation
coil
flip
coil
Hex-Sensor
compensation
coil
flip
coil
Hey-Sensor
APPL_EX1.AI
2-dimensional
field sensor
KMZ52
compensation
coil
flip
coil
Hex-Sensor
compensation
coil
flip
coil
Hey-Sensor
APPL_EX2.AI
Signal Conditioning Unit
(SCU)
x-channel
Iflip
SCU circuit, Figure 12
without electro-
magnetic feedback,
S·Hex
(section 5.5)
y-channel
Iflip
SCU circuit, Figure 12
without electro-
magnetic feedback,
S·Hey
(section 5.5)
Figure 26
Analog 8-segment compass
Signal Conditioning Unit
(SCU)
x-channel
Iflip, Icomp
SCU circuit, Figure 12
with electro-magnetic
feedback,
S·Hex
(section 5.5)
y-channel
Iflip, Icomp
SCU circuit, Figure 12
with electro-magnetic
S·Hey
feedback,
(section 5.5)
Figure 27
Analog high resolution compass
Vx
Direction Determination
Unit (DDU)
8-segment
evaluation
circuit, figure 16;
(section 6.1)
Vy
Vx
Meter
Driver
Vy
35
Application Note
AN00022
LED Display
Differential
air-core meter
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