 Speed /
Response Characteristic |
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Unlike coil-type
sensors, Murata magnetic pattern recognition sensors' output voltage
does not depend on the target traveling speed, enabling the medium
transport mechanism for the equipment to be more freely designed.
Because of the multiple carrier conduction phenomena, the
magnetoresistive element provides an excellent frequency characteristic
of several MHz order, which is suitable for high-speed processing
devices. |
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| (1) |
Murata magnetic pattern recognition sensors
convert a change in magnetic flux density into a resistance value. The
output voltage is proportional to the power supply voltage and the
change in resistance.
Vout = fluctuation R Vin (fluctuation R: Resistance incremental ratio
in the voltage division circuit using two resistance elements, Vin:
Power supply voltage) |
| (2) |
Electromotive force of coil sensorsis
proportional to the rate of change in magnetic flux density through the
coil. |
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| <Murata Sensor: Speed
/ Output Model (Active)> |
<Coil Sensor: Speed /
Output Model (Passive)> |
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- InSb magnetoresistive elements are used for active
sensors.
- Output voltage of active sensorsis stable, regardless
of any change in medium transport speed.
- Performance of Murata sensors has been proven in the
field where target media (paper money) are transported at a speed of
2000 mm/s.
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