A modular Controller Area Network vision system using programmable interface controller

Controller area network (CAN) is a broadcast and differential serial bus standard. CAN provide a high decreasing in wiring complexity and, additionally, make it easy to connect with several devices using a single pair of wires, allowing the data exchange them at the same time. Nowadays using the serial communication technology, the vision system can be applied at the CAN bus system. It is still a new technique in devices communication but a lot of advantage can be absorbed by using the vision system that controlled by the CAN system. The CAN-based vision modular system offer a system that provides real time object tracking vision system using CAN bus communication protocol. This system will reduce the usage of wire and introduce a modular pick and plug components. The vision system using iV-CAM is used for on-board and real-time vision processing and PIC microprocessor is used to control the vision system and convert the output data in the appropriate format before it has been transmitted. When the master controller wants to used the data, the CAN transceiver will transmit the data to the CAN controller and by using SPI serial communication, the PIC microprocessor give the data back to the CAN Controller. The modular vision system prototype will be analyzed in term of physical communication and operation. This pick and plug modular system will be implement to other devices such as robot or vehicle to provides real time object tracking vision system that performs onboard real time image processing for objects and color recognition.