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Design of a open traffic signal controller

We designed a microprocessor AT91SAM9260 and embedded operating system Linux based open traffic signal controller for satisfying the requirement of secondary development of a control scheme of an advanced user. The controller had a programming interface of a unique signal control algorithm,a 3G network communication module and a B /S mode based remote update system besides conventional functionalities of a signal controller. Practical application shows that the controller is stable and reliable. Our work will lay the foundation for the development of in-the-loop experiment platform of traffic signal control hardware.