| Coal mine data collection substation is the hinge between the safety-monitoring module under the mine and the safety-monitoring center above the mine, it takes charge of data collection and communication between the safety-monitoring module and the safety-monitoring.It is determined by data collection substation that wether the coal mine safety-monitoring can work efficiently, and the data collection plays important part in the coal mine safety-monitoring.Aiming at the requests, high performance ARM7 chip LPC2292 is adopted as main processor by this paper. Through the SPI, the Ethernet controller chip is driven and the TCP/IP communication is realized. Through the inner CAN controller of ARM, the CAN communication is realized as well. Embedded real-time operation systemμC/OS-Ⅱwhich is transplanted to the project, the whole system has the features of high reliability and strong expand ability.The main topic of this paper is the design of TCP/IP communication module which is being introduced detailedly around each independent module of coal mine data collection substation. The power and reset module, CAN communication module, LCD display module, rework and storage for parameter module are introduced as well.On the foundation of the hardware design, the software design based on operation systemμC/OS-Ⅱis processed. The software design contains two parts. One is hardware driver program, another is system task. Driver program contains the realization process of each module, and the realization process of TCP/IP communication is mainly introduced. According to the practical function of each module of the substation, the PRI of tasks is assigned and the design flows of coal mine data collection substation's tasks are introduced in the system task part.In the whole system design, each software design and hardware design adopt the anti-jamming method in order to enhance EMC ability. The whole system is running well in practice, and the effectively data collection for coal mine is realized. |
PDF Full Text Request