Result Details
Pressure Transducer with Multiplexed Frequency Transmitter
Švéda Miroslav, prof. Ing., CSc., DIFS (FIT)
Mareček Karel
The pressure transducer for precise and reliable pressure measurementis described. Its aim was to reach better pressure ranges with lowerprice. The ceramic diaphragm for pressure sensing is applied and a newprinciple of special ASIC with multiplexed frequency transmitter forconditioning of fX and fR frequencies controlled by CX and CR sensorcapacitances is exploit. Good protection against the moist and dustyambient air and surrounding electromagnetic parasitic fields isachieved. The new pressure transducer is typically prepared for paperindustry, chemical industry, medicine appliances and pharmacy: designedto 0 ... 10 kPa up to 0 ... 6 MPa pressure ranges, accuracy accordingto IEC 60770 0,5% FSO (BFSL: 0,25% FSO). Its ceramic sensor featureshigh resistance against aggressive medias (e.g. acids and lye) due toits ceramic surface directly in contact with the media. The embeddedmicrocontroller covers the IEEE 1451 functionality.
Embedded microcontroller, pressure measurement, reliability, IEEE 1451
@inproceedings{BUT16898,
author="Radimír {Vrba} and Miroslav {Švéda} and Karel {Mareček}",
title="Pressure Transducer with Multiplexed Frequency Transmitter",
booktitle="Proceedings of the 2004 ISA/IEEE Sensors for Industry Conference",
year="2004",
pages="7--10",
publisher="IEEE Computer Society",
address="New Orleans, LA",
isbn="0-7803-8143-2"
}