A New Improved Data Acquisition System for Electrical Capacitance Tomography

Hui Zhang; Dan  Ren; Li Ming Du

doi:10.4028/www.scientific.net/AMR.756-759.1527

Paper Titles

Research on Encryption Method of the GML Spatial Data in Geographic Information Sharing System
p.1506

Research on Typical Wireless Hoc Routings for Vehicular Network
p.1511

Modeling of Automobile Stamping Parts Management System Driven by Use Case
p.1517

Research and Application of Cloud Computing Technology in Agricultural Information Resources Sharing Service
p.1522

A New Improved Data Acquisition System for Electrical Capacitance Tomography
p.1527

Security Management of Movable Storage Device Based on File System
p.1532

Study on Properties of Expanded Sturmian Sequences
p.1536

Study on Textual Data Sources Based Real-Time ETL
p.1541

On Computer Security in E-Commerce
p.1547

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 756-759A New Improved Data Acquisition System for...

A New Improved Data Acquisition System for Electrical Capacitance Tomography

Abstract:

To improve the precision and speed of the system, a new 16-electrode electrical capacitance tomography (ECT) system based on DSP was designed. The measure system adopts 16 electrodes combined and floating capacitance sensor array, and with the phase located loop circuit to eliminate ECT systems additional phase error. The digital signal processor (DSP) is the core of data acquisition system, the computing and control unit includes a DSP (TMS320C5416) and a complex programmable logic device (CPLD). The communication module of the designed system is developed based on HPI parallel transmission technology, which can implement high-speed communication between ECT system and PC. Simulation results show that the sensitivity distribution was more uniform and the reconstructed images for objects were improved obviously by using 16-combined and floating electrodes sensor.