The Design And Realization Of ATSE Network-type Controller Based On Profibus

Automatic Transfer Switching Equipment (ATSE) as a low-voltage electricalproducts play an increasingly important role in the distribution of electricity andtransmission line protection, and the controller as a core component of the ATSEdetermines the system performance of the pros and cons. And combined withProfibus bus protocol real-time, fast, flexible and open, this paper describes how todesign and development the ATSE network-type intelligent controller based onProfibus bus with traditional switching and protection functions at the same time, bycontrolling the device protocol conversion module access to the Profibus networkand networking communication with other devices in the scene to open interconnectand on-site distributed control.(1) By analyzing the dual power automatic transfer switch and Profibustechnology status development trend, pointing out the limitations of theconventional dual power automatic transfer switch, solutions of dual powernetwork-type intelligent controller based on Profibus and analysis of the keyprotection technology.(2) Based on functional requirements and specific indicators, this paperpresents the general scheme of the ATSE intelligent controller, and gives the designof the hardware system, the MSP430F5418microcontroller as the core, includingthe microprocessor control circuit, power supply module, signal sampling andconditioning modules, input and output of the switch control circuit, serialcommunication interface module, the external expansion memory circuit. This paperfocus on hardware design of the protocol conversion module, elaborate the hardwarecircuit.(3) In the embedded platform μC/OS-II operating system based on thecombination of hardware circuitry, given the design of the ATSE intelligentcontroller software systems. Embedded software design including μC/OS-II on theMSP430F5418transplantation, the design of user tasks, according to the functionalpartitioning, each task is first of all independent write and debug, and then assignpriorities and to communicate with each other between tasks, and finally jointcommissioning in order to achieve all of the functions. At the same time, inCodeWarrior development environment to complete the development of Profibusslave Profibus protocol conversion on MC9S08DZ32hardware platform. (4) The ATSE intelligent controller and Profibus-DP protocol conversionfunction were tested,then conclude the outcome and conclusions.In order to verifythe controller’s remote monitoring capabilities, with STEP7and VC++softwaredesign human-computer interaction of the host computer monitor interface,combined with the ATSE intelligent controller and host computer control interface totest the overall system performance, and obtained the relevant test results andconclusions.The final test results show that: the the ATSE network-type intelligentcontroller not only the technical indicators have reached the desired designrequirements, and the monitoring system is stable and reliable operation.Meanwhile,the Profibus-DP protocol conversion module through a fieldbus Profibus TechnicalCompetence Center (CPCC) certification test.