A PID Controller Applied to the Gain Control of a CMOS Camera Using Reconfigurable Computing

Author

Rossi, Drausio Linardi ; Bonato, Vanderlei ; Marques, Eduardo ; Gago Pontes de Brito Lima, Joao Miguel

Author_Institution

Inst. of Math. & Comput. Sci., Univ. of Sao Paulo, Sao Carlos, Brazil

fYear

2011

fDate

Nov. 30 2011-Dec. 2 2011

Firstpage

141

Lastpage

145

Abstract

This paper shows a PID (Proportional, Integral, Derivative) controller, implemented in a reconfigurable hardware, to control the gain of a CMOS image sensor. The main functions of the proposed system are: image acquisition, histogram building, histogram analysis, and PID gain control based on the histogram analysis. The system has several functional modules working in parallel in order to achieve high performance. As a result, the system is able to compute the whole PID functions in 4.8μs, allowing its application in real time systems.

Keywords

CMOS image sensors; control engineering computing; gain control; three-term control; CMOS camera; CMOS image sensor; PID controller; gain control; histogram analysis; histogram building; image acquisition; proportional integral derivative controller; reconfigurable computing; reconfigurable hardware; time 4.8 mus; Cameras; Field programmable gate arrays; Gain control; Hardware; Histograms; Registers; Tuning; CMOS camera; FPGA; PID Controller; Reconfigurable Computing;

fLanguage

English

Publisher

ieee

Conference_Titel

Reconfigurable Computing and FPGAs (ReConFig), 2011 International Conference on

Conference_Location

Cancun

Print_ISBN

978-1-4577-1734-5

Type

conf

DOI

10.1109/ReConFig.2011.2

Filename

6128568