Journal
IEEE SENSORS JOURNAL
Volume 15, Issue 2, Pages 1020-1026Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2014.2359967
Keywords
Resistive sensor array; measurement error; improved isolated drive feedback circuit (IIDFC); isolated drive feedback circuit (IDFC)
Funding
- Specialized Research Fund for the Doctoral Program of Higher Education [20130092110060]
- Chinese National Support Program [2012BAI14B04]
- Natural Science Foundation of China [71101072]
- Natural Science Foundation of Jiangsu Province [BK2012560]
- Open Fund of the Key Laboratory of Remote Measurement and Control Technology in Jiangsu Province [YCCK201006, YCCK201401]
- Start Fund for Importing Personnel, Nanjing Institute of Technology [YKJ201219]
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By sharing rows and columns, the 2-D networked resistive sensor arrays simplified the interconnect complexity but suffered from the crosstalk problem among its elements. The crosstalk was mainly affected by the multiplexers' resistor, adjacent column elements, adjacent row elements, and array size. First, we designed an improved isolated drive feedback circuit (IIDFC) using one operational amplifier to reduce the crosstalk caused by the adjacent column elements in the 2-D networked resistive sensor array. Then, a mathematical equivalent resistance expression of the element being tested (EBT) for this circuit was analytically derived. Then, the IIDFC and its equivalent resistance expression of the EBT were evaluated by the simulations. The simulation results show that the IIDFC can greatly reduce the crosstalk error caused by the adjacent column elements in the 2-D networked resistive sensor array with the row-column fashion and its resistance expression of the EBT can be used as a general formula to evaluate the performance of the IIDFC.
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