A High-Stability Capacitance Sensor System and its Evaluation

reportActive / Technical Report | Accession Number: ADA535066 | Open PDF

Abstract:

A new capacitance sensor system was developed with a microcontroller, commercial humidity and temperature sensors capacitance-to-digital-converter and a custom-built capacitance sensor. The performance of the system was evaluated by simulation and by testing of the prototype. Impact of variations of ambient conditions on the system performance was analyzed and a model for correcting the humidity and temperature influence was developed. Based on experimental results obtained in noncontrolled environment using a standard capacitor 1 pF, the 24-hour stability of the system was estimated to be within 30 parts in 106. The high stability and sensitivity of the system allow its effective use in object detection applications. Several sensors were constructed and evaluated in sensing various materials under different scenarios.

Author(s):
Avramov-zamurovic, Svetlana ; Lee, Rae D.
Author Organization(s):
NAVAL ACADEMY ANNAPOLIS MD
Descriptive Note:
Journal article preprint
Supplementary Note:
Final version published in IEEE Transaction on Instrumentation and Measurements, v56 n6,April 2009.
Pagination:
0005

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
USNA
 Subject Terms
Joint Capability Areas:
JCA_6.1.1_Wired Transmission; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_5_Command and Control; JCA_5.3_Planning; JCA_8_Building Partnerships
Communities of Interest:
Weapons Technologies
Descriptor(s):
*MEASURING INSTRUMENTS, *CAPACITANCE, HUMIDITY, TEMPERATURE, MICROCOMPUTERS
Field(s)/Group(s):
Electrical and Electronic Equipment, Test Facilities, Equipment and Methods, Electricity and Magnetism
Keyword(s):
*CAPACITANCE SENSORS, CDC(CAPACITANCE TO DIGITAL CONVERTER), MICROCONTROLLERS
Report Date:
2009 Apr 01
Creation Date:
2011 Feb 02